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1.
Arq. bras. med. vet. zootec. (Online) ; 73(6): 1357-1360, Nov.-Dec. 2021. tab
Article in English | LILACS, VETINDEX | ID: biblio-1355680

ABSTRACT

Cortisol is a steroid hormone, one of the glucocorticoids, made in the cortex of the adrenal glands and then released into the blood, which transports it in the entire body. Almost every cell contains receptors for cortisol and so cortisol can have lots of different actions depending on which sort of cells it is acting upon. These effects include controlling the body's blood sugar levels and thus regulating metabolism, acting as an anti-inflammatory product, controlling salt and water balance and influencing blood pressure. The study was conducted over a period of 3 months, between March-August 2020, in 2 swine farms in Iasi county, Romania, on a total of 46 pigs, 3 to 4 months old, both males and females, in order to investigate stress levels in finishing facilities. The study revealed higher levels of cortisol while eosinophil counts severely decreased, changes which are associated with a strong reaction to stress for individuals that were housed in finishing facilities.(AU)


O cortisol é um hormônio esteroide, um dos glicocorticoides, produzido no córtex das glândulas suprarrenais e, em seguida, liberado no sangue, que o transporta por todo o corpo. Quase todas as células contêm receptores para o cortisol e, portanto, ele pode ter muitas ações diferentes, dependendo do tipo de célula sobre a qual atua. Esses efeitos incluem controlar os níveis de açúcar no sangue do corpo e, assim, regular o metabolismo, atuando como um produto anti-inflamatório, controlando o equilíbrio de sal e água e influenciando a pressão arterial. O presente estudo foi realizado durante um período de três meses, entre março-agosto de 2020, em duas granjas de suínos no condado de Iasi, Romênia, em um número total de 46 porcos, de três a quatro meses de idade, machos e fêmeas, a fim de investigar níveis de estresse nas instalações de acabamento. O estudo revelou níveis mais elevados de cortisol, enquanto a contagem de eosinófilos diminuiu severamente, mudanças que são consideradas associadas a uma forte reação ao estresse para indivíduos que foram alojados em instalações de acabamento.(AU)


Subject(s)
Animals , Stress, Psychological/diagnosis , Swine/physiology , Hydrocortisone/analysis , Eosinophils , Leukocyte Count/veterinary , Romania , Farms
2.
Arq. bras. med. vet. zootec. (Online) ; 72(2): 371-378, Mar./Apr. 2020. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1128217

ABSTRACT

The aim of this study was to evaluate the metabolic, inflammatory, and hepatic aspects, as well as the milk yield in heifers submitted to protocol for induction of lactation compared to primiparous cows. Sixty Holstein heifers were selected and enrolled into two groups: Control (n= 30), pregnant heifers and Induction heifers (n= 30), non-pregnant femeales, submitted to a lactation induction protocol. Blood samples were collected at: pre-lactation period (weeks -3, -2 and -1) and post-lactation period (weeks 1, 2 and 3), aiming to evaluate glucose, non-esterified fatty acids, paraoxonase-1, albumin, ALT, GGT and cortisol. The protocol efficiently induced lactation in all the heifers, which produced 74.54% of the total production of milk from primiparous cows. In the pre-lactation period, induced animals presented higher concentrations of non-esterified fatty acids than the Control heifers, and the opposite was observed in the post lactation period. In both moments albumin and ALT were lower in the Induction group, and paraoxonase-1 activity and GGT concentrations were higher, compared to the Control. Thus, lactation induction protocol is efficient to initiate milk production in dairy heifers with no considerable changes in energetic, metabolic and hepatic profile when compared to heifers in physiological lactation.(AU)


O objetivo deste estudo foi avaliar os perfis metabólico, inflamatório, hepático e a produção de leite de novilhas induzidas à lactação comparadas a primíparas. Sessenta novilhas da raça Holandês foram selecionadas e alocadas em grupos: controle (n=30), novilhas prenhas, e indução (n=30), novilhas vazias submetidas a um protocolo de indução de lactação. As amostras de sangue foram coletadas nas semanas -3, -2 e -1 (pré-lactação) e nas semanas 1, 2 e 3 (pós-início de lactação) para avaliação de glicose, ácidos graxos não esterificados, paraoxonase-1, albumina, ALT, GGT e cortisol. O protocolo induziu eficientemente a lactação em todas as novilhas, que produziram 74,54% da produção total de leite do controle. No período pré-lactação, o grupo indução apresentou maiores concentrações de ácidos graxos não esterificados que o controle, e o oposto foi observado pós-lactação. Em ambos os momentos, albumina e ALT foram menores no grupo indução, e a atividade da paraoxonase-1 e as concentrações de GGT foram maiores, em comparação ao controle. Assim, o protocolo de indução de lactação foi eficiente para iniciar a produção de leite em novilhas induzidas, além de terem sido observadas alterações nos perfis energético, metabólico e hepático em comparação a novilhas em lactação fisiológica.(AU)


Subject(s)
Animals , Female , Cattle , Lactation/physiology , Hydrocortisone/analysis , Alanine Transaminase/analysis , Albumins/analysis , Fatty Acids, Nonesterified/analysis , gamma-Glutamyltransferase/analysis , Milk
3.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; 42(1): 54-62, Jan.-Feb. 2020. tab, graf
Article in English | LILACS | ID: biblio-1055351

ABSTRACT

Objective: Although studies have shown an association between poor sleep and chronotype with psychiatric problems in young adults, few have focused on identifying multiple concomitant risk factors. Methods: We assessed depressive symptoms (Beck Depression Inventory [BDI]), circadian typology (Morningness-Eveningness Questionnaire [MEQ]), sleep quality (Pittsburgh Sleep Quality Index [PSQI]), perceived stress (Perceived Stress Scale [PSS]), social rhythm (Social Rhythm Metrics [SRM]), and salivary cortisol (morning, evening and night, n=37) in 236 men (all 18 years old). Separate analyses were conducted to understand how each PSQI domain was associated with depressive symptoms. Results: Depressive symptoms were more prevalent in individuals with higher perceived stress (prevalence ratio [PR] = 6.429, p < 0.001), evening types (PR = 2.58, p < 0.001) and poor sleepers (PR = 1.808, p = 0.046). Multivariate modeling showed that these three variables were independently associated with depressive symptoms (all p < 0.05). The PSQI items subjective sleep quality and sleep disturbances were significantly more prevalent in individuals with depressive symptoms (PR = 2.210, p = 0.009 and PR = 2.198, p = 0.008). Lower levels of morning cortisol were significantly associated with higher depressive scores (r = -0.335; p = 0.043). Conclusion: It is important to evaluate multiple factors related to sleep and chronotype in youth depression studies, since this can provide important tools for comprehending and managing mental health problems.


Subject(s)
Humans , Male , Adolescent , Sleep Wake Disorders/psychology , Stress, Psychological/psychology , Hydrocortisone/analysis , Chronobiology Disorders/psychology , Depression/etiology , Military Personnel/psychology , Psychiatric Status Rating Scales , Reference Values , Saliva/metabolism , Sleep/physiology , Time Factors , Multivariate Analysis , Risk Factors , Analysis of Variance , Statistics, Nonparametric , Depression/metabolism , Self Report
4.
Arch. argent. pediatr ; 118(1): 18-24, 2020-02-00. tab, graf
Article in English, Spanish | LILACS, BINACIS | ID: biblio-1095334

ABSTRACT

Introducción. El cortisol salival es una herramienta útil como biomarcador de estrés en pediatría, ya que la obtención de muestras no es invasiva. Hay escasa información sobre su uso en niños, y no se reportaron valores de referencia en lactantes sanos en la Argentina. Es importante establecerlos en cada centro como base para realizar estudios posteriores en lactantes, en quienes parece ser la herramienta objetiva más relevante en la actualidad para evaluar estrés. Objetivo. Determinar los valores de referencia de cortisol salival en lactantes sanos de 0 a 12 meses de edad. Métodos. Estudio descriptivo, de corte transversal, que evaluó cortisol salival matutino de niños sanos de ambos sexos de 0 a 12 meses que concurrieron a control de salud en el Hospital Pirovano entre marzo de 2017 y marzo de 2018. Se tomaron muestras de saliva de 8 a 9 a. m. en ayunas y se procesaron con electroquimioluminiscencia. Los resultados se informaron como media y desvío estándar. Resultados. Se incluyeron 140 niños, y se obtuvieron 96 muestras. La media de cortisol salival matutino fue 5,46 nmol/l (intervalo de confianza del 95 %: 4,66-6,38), desvío estándar 2,15. No se observó correlación con la variable edad, por lo cual el intervalo de referencia no requirió el fraccionamiento por grupo etario. No se observaron diferencias significativas respecto a sexo, edad gestacional, peso al nacer, tipo de parto o tipo de alimentación. Conclusión. Se informó el intervalo de referencia de cortisol salival matutino en lactantes sanos de 0 a 12 meses.


Introduction. Salivary cortisol is a useful tool as a biomarker of stress in pediatrics because it allows for non-invasive sampling. There is little information about its use in children, and no reference values for healthy infants have been reported in Argentina. Reference values should be established at each site as the basis for subsequent tests in infants, for whom salivary cortisol appears to be the most relevant objective tool to assess stress at present. Objective. To determine reference values for salivary cortisol in healthy infants aged 0-12 months. Methods. Descriptive, cross-sectional study that assessed morning salivary cortisol levels in healthy male and female infants aged 0-12 months that attended Hospital Pirovano for a health checkup between March 2017 and March 2018. Fasting saliva samples were collected between 8 and 9 a.m. and were processed using electrochemiluminescence. Results were reported as mean and standard deviation. Results. A total of 140 infants were included, and 96 samples were collected. Mean morning salivary cortisol levels were 5.46 nmol/L (95 % confidence interval: 4.66-6.38), standard deviation: 2.15. No correlation to age was observed, so it was not necessary to divide the reference range into age groups. No significant differences were observed in terms of sex, gestational age, birth weight, type of delivery or type of feeding. Conclusion. The reference range of morning salivary cortisol levels in healthy infants aged 0-12 months was reported.


Subject(s)
Humans , Male , Female , Infant, Newborn , Infant , Saliva/chemistry , Stress, Psychological/metabolism , Hydrocortisone/metabolism , Reference Values , Hydrocortisone/analysis , Epidemiology, Descriptive , Cross-Sectional Studies , Analysis of Variance , Luminescent Measurements
5.
Braz. J. Vet. Res. Anim. Sci. (Online) ; 57(3): e162908, 2020. tab
Article in English | LILACS, VETINDEX | ID: biblio-1122194

ABSTRACT

Surgical procedures in pet animals are usually associated with some degree of stress and pain. Hospitalization is one stress-triggering factor. The present study aimed to evaluate the degree of stress and pain during hospitalization of female dogs submitted to elective ovariohysterectomy (OVH) and to investigate the influence of hospitalization on the stress of these animals. Fifteen young adult crossbreed female dogs were divided into two groups: eight animals without surgery (Group 1 - control) and seven animals submitted to surgery (Group 2 - OVH). Pain and stress were evaluated. Visual analogue scale (VAS), simple descriptive pain scale (SDS) and modified Glasgow pain scale (MGPS) were used. Serum cortisol (µg/dL) and glucose (mg/dl) were also measured. No statistical difference was observed for cortisol (µg/dL) between the two groups. Despite the absence of statistical difference between groups and times, mean serum cortisol (µg/dL) values exceeded the normal values for the canine species at various times evaluated. Hyperglycemia was only observed at T4 in the OVH group. It was concluded that the hospitalization of animals was more relevant in the establishment of stress than the surgical procedure and associated pain. The influence of stress was a relevant factor in the results of assessments carried out using the MGPS.(AU)


Os procedimentos cirúrgicos em animais de companhia são geralmente associados a algum grau de dor e estresse e a hospitalização é um dos fatores que predispõem ao estresse. O presente estudo teve o objetivo de avaliar o grau de estresse e dor durante a internação de cadelas submetidas à ovariohisterectomia eletiva (OVH) e investigar a influência da hospitalização sobre o estresse nestes animais. Quinze cadelas adultas jovens e mestiças foram divididas em dois grupos: oito animais não submetidos à cirurgia (Grupo 1 - controle) e sete animais submetidos à OVH (Grupo 2 - OVH). Dor e estresse foram avaliados. Foram utilizadas a escala visual analógica (EVA), escala descritiva simples (EDS) e escala de dor de Glasgow modificada (EDGM). A glicose (mg/dL) e o cortisol (µg/dL) séricos foram mensurados. Não houve diferença estatística do cortisol (µg/dL) entre os grupos. Entretanto, os valores médios de cortisol (µg/dL) excederam àqueles considerados normais para a espécie canina em vários períodos avaliados. A hiperglicemia foi observada em T4 no grupo OVH. Concluiu-se que a hospitalização dos animais foi mais relevante na ocorrência do estresse do que o procedimento cirúrgico e a dor associada a ele. Desta forma, a influência do estresse foi um fator relevante nos resultados das avaliações realizadas com a escala de dor de Glasgow modificada.(AU)


Subject(s)
Animals , Female , Dogs , Stress, Psychological , Pain Measurement/veterinary , Hospitalization , Postoperative Period , Hydrocortisone/analysis , Ovariectomy/veterinary , Hospitals, Animal , Hysterectomy/veterinary
6.
J. appl. oral sci ; 28: e20190601, 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1134792

ABSTRACT

Abstract Objective The aim of this study was to compare the effects of music at 432 Hz, 440 Hz, and no music on the clinical perception of anxiety and salivary cortisol levels in patients undergoing tooth extraction. Methodology A parallel-group randomized clinical trial was conducted. Forty-two patients (average age: 23.8±7.8 years, 27 women) with a moderate level of anxiety were distributed in three groups: use of music for 15 minutes at a frequency of 432 Hz (n=15), at 440 Hz (n=15) and a control group without music (n=12). The CORAH Dental Anxiety Scale and salivary cortisol levels, estimated by the solid phase enzyme-linked immunosorbent assay (ELISA), were measured and compared before and after the music intervention between groups (two-way ANOVA-Tukey p<0.05, RStudio). Results Significantly lower anxiety level values were observed at 432 Hz (8.7±2.67) and 440 Hz (8.4±2.84) compared to the control group (17.2±4.60; p<0.05). The salivary cortisol level at 432 Hz (0.49±0.37 μg/dL) was significantly lower than 440 Hz (1.35±0.69 μg/dL) and the control group (1.59±0.7 μg/dL; p<0.05). Conclusion The use of music significantly decreased clinical anxiety levels, and the frequency of 432 Hz was effective in decreasing salivary cortisol levels before tooth extraction.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Young Adult , Saliva/chemistry , Tooth Extraction/psychology , Hydrocortisone/analysis , Dental Anxiety/therapy , Music/psychology , Music Therapy/methods , Stress, Psychological , Enzyme-Linked Immunosorbent Assay , Surveys and Questionnaires , Reproducibility of Results , Analysis of Variance , Treatment Outcome , Dental Anxiety/psychology , Statistics, Nonparametric
7.
Rev. chil. salud pública ; 24(1): 23-29, 2020. ilus, tab, graf
Article in Spanish | LILACS | ID: biblio-1121594

ABSTRACT

INTRODUCCIÓN: Las desigualdades socioeconómicas y territoriales se relacionan con la salud de la población santiaguina; sin embargo, los mecanismos causales que generan las inequidades en salud no están del todo claros. En este trabajo, se cuantifica el estrés de individuos viviendo en diferentes comunas, y se lo discute como causa y consecuencia de procesos vinculados con inequidades en salud. EL OBJETIVO era relacionar el Índice de Calidad de Vida Urbana (ICVU) de la comuna de residencia de individuos en Santiago de Chile con las concentraciones de cortisol en pelo (CCP), un biomarcador de los niveles de estrés fisiológico crónico. MATERIALES Y MÉTODOS: Se exploró la relación entre CCP y la edad, el sexo y el ICVU de la comuna de residencia en 80 estudiantes de educación superior en Santiago de Chile. RESULTADOS: No se encontraron correlaciones significativas entre CCP y la edad o el sexo de los participantes. Se encontró una correlación significativa entre CCP y los valores del ICVU de la comuna de residencia, además de encontrar diferencias significativas entre CCP y los distintos rangos de ICVU (Superior, Promedio e Inferior).DISCUSIÓN: Los resultados sugieren considerar las diferencias individuales de CCP como resultado de desigualdades socio-territoriales y también como posible causa de inequidades en salud. Se recomienda incluir el rol del estrés en las políticas públicas de salud, ampliando las redes de apoyo y prevención de estrés en los sectores con bajo ICVU.


INTRODUCTION: Socioeconomic and urban inequalities are associated with health in Santiago; nonetheless, the causal mechanisms underlying health inequalities are not entirely clear. This article quantifies the stress of individuals living in different municipalities and discusses its role as cause and consequence in the generation of health inequalities. THE OBJECTIVE of this study was to determine the relationship between the Urban Quality of Life Index (UQoLI) of individuals' municipality of residence in Santiago, Chile with their hair cortisol concentrations (HCC), a biomarker of chronic physiological stress.MATERIALS AND METHODS: The relationship of HCC with age, sex and UQoLI was explored in a sample of 80 university students in Santiago, Chile. RESULTS: No significant correlations were found between HCC and age and sex. A significant correlation was found between HCC and UQoLI, and significant differences were found be-tween HCC at different levels of UQoLI (High, Average, and Low).DISCUSSION: Results suggest that HCC differences could be considered a result of urban in-equalities, as well as a possible cause of health inequalities. The role of stress should be inclu-ded in public health policies, to expand support networks and prevent stress, especially among people living in areas with low urban quality of life.


Subject(s)
Humans , Male , Female , Adult , Young Adult , Quality of Life , Stress, Physiological , Hydrocortisone/analysis , Hair/chemistry , Urban Population , Biomarkers/analysis , Chile/epidemiology , Residence Characteristics , Cross-Sectional Studies , Health Status Disparities , Socioeconomic Factors
8.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; 41(4): 280-288, July-Aug. 2019. tab, graf
Article in English | LILACS | ID: biblio-1011515

ABSTRACT

Objective: The incidence rate of major depression in adolescents reaches approximately 14%. This disorder is usually recurrent, without remission of symptoms even after pharmacological treatment, and persists throughout adult life. Since the effects of antidepressants take approximately 2 weeks to begin, new pharmacological therapies are under continuous exploration. Recent evidence suggests that psychedelics could produce rapid antidepressant effects. In this study, we evaluated the potential antidepressant effects of ayahuasca in a juvenile non-human primate model of depression. Methods: While living with their families, juvenile marmosets (8 males; 7 females) were observed on alternate days for four weeks during a baseline phase. This was followed by 8 weeks of an induced depressive state protocol, the social isolated context (IC), in which the animals were monitored in the first and last weeks. Subsequently, five males and four females were randomly selected for treatment, first with a single administration of saline vehicle (1.67 mL/300 g of body weight, via gavage), followed by a single dose of ayahuasca (1.67 mL/300 g of body weight, via gavage). Both phases lasted 1 week and the animals were monitored daily. A third week of sampling was called the tardive-pharmacological effects phase. In all phases the marmosets were assessed for behavior, fecal cortisol levels, and body weight. Results: After IC, the animals presented typical hypocortisolemia, but cortisol recovered to baseline levels 24 h after an acute dose of ayahuasca; this recovery was not observed in vehicle-treated animals. Additionally, in males, ayahuasca, but not the vehicle, reduced scratching, a stereotypic behavior, and increased feeding. Ayahuasca treatment also improved body weight to baseline levels in both sexes. The ayahuasca-induced behavioral response had long-term effects (14 days). Thus, in this translational juvenile animal model of depression, ayahuasca presented beneficial effects. Conclusions: These results can contribute to the validation of ayahuasca as an antidepressant drug and encourage new studies on psychedelic drugs as a tool for treating mood disorders, including for adolescents with early-onset depression.


Subject(s)
Humans , Animals , Male , Female , Banisteriopsis , Depressive Disorder, Major/drug therapy , Hallucinogens/administration & dosage , Antidepressive Agents/administration & dosage , Primates , Hydrocortisone/analysis , Callitrichinae , Disease Models, Animal , Feces/chemistry
9.
Rev. chil. pediatr ; 90(3): 275-282, jun. 2019. tab
Article in Spanish | LILACS | ID: biblio-1013834

ABSTRACT

INTRODUCCIÓN: En Chile el sistema penitenciario cuenta con un programa que permite que las madres privadas de libertad vivan con sus hijos menores de 2 años. Esta modalidad podría implicar que los niños estén más expuestos a condiciones de estrés y a mayor riesgo de retraso en su desarrollo psicomotor (DSM). OBJETIVO: Comparar el DSM y la concentración de cortisol en saliva de los niños que viven en la cárcel junto a sus madres y comparar los resultados con los observados en niños que no están bajo este régimen. SUJETOS Y MÉTODO: Estudio transversal en 42 lactantes, 12 de ellos hijos de madres reclusas en el centro penitenciario de Santiago (CPF), y 30 controles provenientes de un Centro de Salud Familiar de Atención Primaria (CESFAM). Se evaluó DSM de los lactantes mediante la encuesta ASQ-3 y se realizó medición de cortisol salival mediante radioinmunoensayo a los lactantes y madres. RESULTADOS: La mediana de cortisol salival de los hijos de madres del CPF y CESFAM fue de 2,3 ng/ml (IQR 1,1 a 2,7) y de 2,1 ng/ml (IQR 1,6 a 2,9) respectivamente. El cortisol materno fue 4,6 ng/ml (IQR 3,8 a 7,3) en el CPF y 3,7 ng/ml (IQR 2,4 a 4,7) en el CESFAM. El déficit del DSM fue 2,3% y 28,5% para los niños del CPF y del CESFAM, respectivamente, sin diferencia estadística (p = 0,06). CONCLUSIONES: No hubo diferencia en el DSM y tampoco en el cortisol salival entre los niños de ambos grupos.


INTRODUCTION: In Chile, the prison system has a program that allows inmate mothers to live with their children un der two years of age. This could imply that these children are more exposed to stress conditions and a higher psychomotor developmental delay (PDD) risk. OBJECTIVE: To compare the PDD and salivary cortisol concentrations (SCC) of children living in prison with their mothers and to compare the results with control children. SUBJECTS AND METHOD: Cross-sectional study in 42 infants, 12 of them are children of inmate mothers in the penitentiary center (CPF) of Santiago, and 30 controls from a Primary Care Family Health Center (CESFAM). PDD of infants was assessed through the ASQ-3 questionnaire and salivary cortisol was measured in infants and mothers using radioimmunoassay. RESULTS: The median salivary cortisol level of the children of CPF and CESFAM mothers was 2.3 ng/ ml (IQR 1.1 to 2.7) and 2.1 ng/ml (IQR 1.6 to 2, 9) respectively. Maternal cortisol was 4.6 ng/ml (IQR 3.8 to 7.3) in the CPF and 3.7 ng/ml (IQR 2.4 to 4.7) in the CESFAM. The PDD deficit was 2.3% and 28.5% for children from the CPF and the CESFAM respectively, without statistical difference (p = 0.06). CONCLUSIONS: There was no difference in the PDD and salivary cortisol between children of both groups.


Subject(s)
Humans , Male , Female , Infant, Newborn , Infant , Child, Preschool , Child , Adult , Young Adult , Prisons , Psychomotor Disorders/epidemiology , Hydrocortisone/analysis , Child Development/physiology , Mother-Child Relations/psychology , Prisoners/psychology , Psychomotor Disorders/diagnosis , Psychomotor Disorders/etiology , Saliva/metabolism , Stress, Psychological/etiology , Stress, Psychological/psychology , Chile , Cross-Sectional Studies , Surveys and Questionnaires , Mothers
10.
Braz. arch. biol. technol ; 62: e19180494, 2019. tab, graf
Article in English | LILACS | ID: biblio-1055395

ABSTRACT

Abstract: Mood disorder is one of the complications of stroke. The inability to cope with stress is also a prognosis of depression and anxiety. The aim of this study is to assess the response of stress system in the post stroke patients. Twelve healthy controls (HC) and twelve post-stroke patients after filling in the State-Trait Anxiety Inventory completed the Trier Social Stress Test (TSST) which induces acute stress. Salivary samples were collected to determine salivary cortisol levels and ECG record were taken in four times (before, right after stress, after two recoveries: 20 and 40 minutes after stress). ECG was also recorded during TSST and then the linear and non-linear features of Heart Rate Variability (HRV) were analyzed. The results showed that trait anxiety score and baseline salivary cortisol level were higher in post stroke than HC group (P-value <0.05). The increase of cortisol level after stress was only observed in HC that returned to baseline after the second recovery time. The stress increased the relative low frequency of HRV in both groups, however it was significantly lower in the stroke than HC group (P-value < 0.005). There was also a significant difference between alpha 1 DFA measures in stroke group and HC group (P-value <0.05). It is concluded that the impairment of the hormonal axis of stress system in the post-stroke patients that until now was not reported.


Subject(s)
Humans , Hydrocortisone/analysis , Stress Disorders, Traumatic, Acute , Ischemic Stroke/psychology , Psychological Tests , Heart Rate
11.
Rev. cuba. estomatol ; 55(3): 1-12, jul.-set. 2018. tab
Article in Portuguese | LILACS | ID: biblio-991066

ABSTRACT

Introdução: devido às limitações inerentes do processo de envelhecimento, a institucionalização é uma realidade, podendo gerar impacto na saúde física e psicológica do individuo sênior. Objetivo: determinar as concentrações de cortisol salivar de idosos institucionalizados e não institucionalizados e verificar as condições de saúde bucal e dependência física. Métodos: estudo transversal, descritivo e analítico, com amostra composta por 80 indivíduos, sendo 45 institucionalizados e 35 não institucionalizados. Realizou-se exame clínico bucal para avaliação de uso e necessidade de prótese dentária nos arcos superior e inferior. Também foi realizada coleta salivar, para análise da concentração de cortisol, marcador biológico do nível de estresse. Resultados: a maioria dos idosos apresentou-se desdentado total, sendo 84,44 porcento no grupo institucionalizado e 71,43 porcento no grupo não institucionalizado. Os idosos institucionalizados apresentaram menor índice de uso de próteses, quando comparados ao grupo de idosos não institucionalizados (p= 0,0013). A análise das concentrações de cortisol salivar demonstrou diferenças significantes entre os grupos, com taxas mais elevadas no grupo institucionalizado (p= 0,0397). Maiores concentrações de cortisol salivar foram encontradas em indivíduos que possuíam necessidades protéticas, com diferença estatisticamente significante (p= 0,0454). Conclusão: os idosos institucionalizados apresentaram elevadas concentrações de cortisol salivar, maior necessidade de uso de próteses e apresentaram-se mais dependentes, quando comparados com o grupo não institucionalizado(AU)


Introducción: debido a las limitaciones inherentes del proceso de envejecimiento, la institucionalización es una realidad, lo que puede generar impacto en la salud física y psicológica del adulto mayor. Objetivo: determinar las concentraciones de cortisol salival de ancianos institucionalizados y no institucionalizados, y verificar variables como salud bucal y dependencia física. Métodos: estudio transversal, descriptivo y analítico, en el cual la muestra estuvo compuesta por 80 individuos, de estos 45 eran institucionalizados y 35 no institucionalizados. Se realizó examen clínico bucal para evaluar el uso y necesidad de prótesis en los arcos superior e inferior. También se realizó recolecta salivar, para análisis de la concentración de cortisol, marcador biológico del nivel de estrés. Resultados: la mayoría de los ancianos se presentaron desdentados totales, para el 84,44 por ciento en el grupo institucionalizado y 71,43 por ciento en el grupo no institucionalizado. Los ancianos institucionalizados presentaron menor índice de uso de prótesis, en comparación con el grupo de ancianos no institucionalizados (p= 0,0013). El análisis de las concentraciones de cortisol salival demostró diferencias significativas entre los grupos, con tasas más elevadas en el grupo institucionalizado (p= 0,0397). Mayores concentraciones de cortisol salivar fueron encontradas en individuos que poseían necesidades protésicas, con diferencia estadísticamente significante (p= 0,0454). Conclusiones: ancianos institucionalizados presentan elevadas concentraciones de cortisol salival, mayor necesidad de uso de prótesis y se presentan más dependientes, al ser comparados con el grupo no institucionalizado(AU)


Introduction: due to the limitations inherent to the process of aging, institutionalization is a reality which may have an impact on the physical and psychological health status of elderly people. Objectives: determine salivary cortisol concentrations in institutionalized and non-institutionalized elderly people, and verify variables such as oral health and physical dependence. Methods: a descriptive analytical cross-sectional study was conducted of a sample of 80 individuals, of whom 45 were institutionalized and 35 non-institutionalized. Oral clinical examination was performed to evaluate the use of and need for dental prostheses in the upper and lower arches. Saliva was collected to determine the concentration of cortisol, a biological marker of stress levels. Results: most of the sample were totally edentulous elderly people: 84.44 percent in the institutionalized group and 71.43 percent in the non-institutionalized group. A lower rate of prosthesis use was found in the institutionalized sample than in the non-institutionalized sample (p= 0.0013). Analysis of salivary cortisol concentrations revealed significant differences between the groups, with higher values in the institutionalized group (p= 0.0397). Higher salivary cortisol concentrations were found among individuals with prosthetic needs, the difference being statistically significant (p= 0.0454). Conclusions: institutionalized elderly people had higher salivary cortisol concentrations, greater prosthetic needs, and were more care dependent than the non-institutionalized group(AU)


Subject(s)
Humans , Male , Female , Aged , Aged, 80 and over , Salivary Proteins and Peptides/analysis , Hydrocortisone/analysis , Dental Health Surveys/statistics & numerical data , Denture Identification Marking/statistics & numerical data , Health of Institutionalized Elderly , Epidemiology, Descriptive , Cross-Sectional Studies
12.
Arq. neuropsiquiatr ; 76(9): 622-634, Sept. 2018. tab, graf
Article in English | LILACS | ID: biblio-973945

ABSTRACT

ABSTRACT Multiple sclerosis (MS) is a demyelinating, progressive and neurodegenerative disease. A disturbance on the hypothalamic-pituitary-adrenal axis can be observed in patients with MS, showing altered cortisol levels. We aimed to identify basal cortisol levels and verify the relationship with clinical symptoms in patients with MS. A systematic search was conducted in the databases: Pubmed, Web of Science and SCOPUS. Both higher and lower cortisol levels were associated with MS. Higher cortisol levels were associated with depression and anxiety, while lower levels were associated with depression, fatigue and urinary dysfunction. Higher cortisol levels may be associated with the progression and severity of MS.


RESUMO A esclerose múltipla (EM) é uma doença desmielinizante, progressiva e neurodegenerativa. Um distúrbio no eixo hipotálamo-hipófise-adrenal pode ser observado em pacientes com EM, mostrando níveis alterados de cortisol. Nosso objetivo foi identificar os níveis basais de cortisol e verificar a relação com os sintomas clínicos em pacientes com EM. Uma busca sistemática foi realizada nas bases de dados: Pubmed, Web of Science e SCOPUS. Ambos os níveis de cortisol elevado e baixo foram associados com a EM. Níveis mais elevados de cortisol foram associados à depressão e ansiedade, enquanto níveis mais baixos foram associados à depressão, fadiga e disfunção urinária. Níveis altos de cortisol podem estar associados à progressão e gravidade da EM.


Subject(s)
Humans , Hydrocortisone/analysis , Multiple Sclerosis/diagnosis , Saliva/chemistry , Stress, Psychological , Hydrocortisone/urine , Hydrocortisone/blood , Disease Progression , Symptom Assessment , Hair/chemistry , Multiple Sclerosis/psychology
13.
Arch. endocrinol. metab. (Online) ; 62(3): 325-331, May-June 2018. tab, graf
Article in English | LILACS | ID: biblio-950072

ABSTRACT

ABSTRACT Objective: The testosterone:cortisol ratio (T:C) is suggested to be used in order to examine whether physical exercise generates either a "catabolic environment" or an "anabolic environment". The present study aims to evaluate the acute time-course profile of cortisol and testosterone due to an episode of physical exercise. A biphasic profile in the T:C ratio response was hypothesized. Materials and methods: Morning sessions of treadmill running at two different intensities (Heart Rate at 65% and 80% of the maximum cardiac reserve) were performed by 6 male non-runners (NR) and 12 trained male runners (subdivided into trained runners T1 and T2). Cortisol and testosterone were measured in saliva. NR and T1 ran for 30 minutes at both intensities, and T2 ran for 46 minutes (± 4.1) at 65% and 42 minutes (± 3.5) at 80%. Results: In the 80% heart rate target, both groups of runners showed the biphasic time-profile, while the non-runners group did not. However, at the 65% level, none of the groups presented the hypothesized biphasic response. Conclusions: A biphasic time-profile in the testosterone:cortisol ratio can be seen in short-bout, high intensity exercise (treadmill running) during the morning in men trained for this specific physical activity.


Subject(s)
Humans , Male , Running/physiology , Saliva/chemistry , Testosterone/analysis , Hydrocortisone/analysis , Athletes , Heart Rate/physiology , Time Factors
14.
Rev. bras. enferm ; 71(supl.3): 1358-1365, 2018. tab
Article in English | LILACS, BDENF | ID: biblio-958737

ABSTRACT

ABSTRACT Objective: Analyze the influence of ear protectors on the baseline levels of salivary cortisol and response and total sleep time of preterm neonates during two periods of environmental management of a neonatal intermediate care unit. Method: A clinical, randomized, controlled and crossover study conducted with 12 preterm neonates. The use of ear protectors was randomized in two periods. Sleep evaluation was performed using one Alice 5 Polysomnography System and unstructured observation. Results: No significant difference was observed between the baseline levels of salivary cortisol and response in preterm neonates from the control and experimental groups, and no statistical significance was observed between the total sleep time of both groups. No relationship was observed between the baseline levels of cortisol and response and total sleep time. Conclusion: Ear protectors in preterm neonates did not influence the salivary cortisol level and total sleep time in the studied periods.


RESUMEN Objetivo: Certificar la influencia del uso de protectores auriculares en los niveles de cortisol salival basal y la respuesta y en el tiempo total de sueño de prematuros durante dos períodos de manejo del ambiente de una unidad de cuidado intermedio neonatal. Método: Ensayo clínico, aleatorio, controlado y cruzado conducido en 12 prematuros. El uso de protectores auriculares ha sido aleatorio en dos períodos. La evaluación del sueño ha sido realizada por medio del aparato de polisomnografía Alice 5 y de la observación no estructurada. Resultados: No ha habido diferencia significante entre los niveles de cortisol salival basal y la respuesta en los prematuros de los grupos control y experimental, no habiendo también significancia estadística entre el tiempo total de sueño de los dos grupos. No ha sido observada la relación entre los niveles de cortisol basal y la respuesta y el tiempo total de sueño. Conclusión: Los protectores auriculares en los prematuros no han influenciado el nivel de cortisol salival y el tiempo total de sueño en los períodos estudiados.


RESUMO Objetivo: Verificar a influência do uso de protetores auriculares nos níveis de cortisol salivar basal e resposta e no tempo total de sono de prematuros durante dois períodos de manejo do ambiente de uma unidade de cuidado intermediário neonatal. Método: Ensaio clínico, randomizado, controlado e cruzado conduzido em 12 prematuros. O uso de protetores auriculares foi randomizado em dois períodos. A avaliação do sono foi realizada por meio do polissonígrafo Alice 5 e da observação não estruturada. Resultados: Não houve diferença significante entre os níveis de cortisol salivar basal e resposta nos prematuros dos grupos controle e experimental, não havendo também significância estatística entre o tempo total de sono dos dois grupos. Não foi observada relação entre os níveis de cortisol basal e resposta e o tempo total de sono. Conclusão: Os protetores auriculares nos prematuros não influenciaram o nível de cortisol salivar e o tempo total de sono nos períodos estudados.


Subject(s)
Humans , Male , Female , Infant , Saliva/chemistry , Sleep/physiology , Infant, Premature/metabolism , Hydrocortisone/analysis , Cross-Over Studies
15.
ABCD arq. bras. cir. dig ; 31(1): e1351, 2018. tab, graf
Article in English | LILACS | ID: biblio-949212

ABSTRACT

ABSTRACT Background: Actually the lifestyle exposes the population to several risk factors related to alimentary habits and less physical activity that contributes to chronic diseases appearance worldwide. Aim: To analyze the association between salivary cortisol and the components of metabolic syndrome. Methods: This is a cross-sectional study. As part of it, 28 individuals aged 30-59 years presenting three or more of the following findings: CA: ≥88 cm for women and ≥102 cm for men; SBP>130 mmHg and DBP>85 mmHg; GL>100 mg/dl; TG>150 mg/dl; HDL<40 mg/dl for men and <50 mg/dl for women. Was performed analysis of salivary cortisol (by radioimmunoassay) from 25 salivary samples collected throughout the day, for evaluating changes in the circadian rhythm of this hormone (8AM, noon and 8PM). Results: 28 evaluated individuals had a mean age of 51.9±7.5 years, mostly women (64.3%) and a mean of BMI 33.6±3.2 kg/m². The cortisol level from the 8AM averaged 18.7±4.8 ng/dlL. Individuals with FPG>110mg/dl, have significantly lower average levels of cortisol than ones with FPG <110 (12.8±5,2 vs. 17.3±4.2). Significant correlations were HOMA vs. WC (r=0,465; p˂0,005) and TG (r=0,473; p˂0,005), WC vs. FG (r=0,446; p˂0,005) and BMI (r=0,730; p˂0.0001); TG vs. HDL (r=0,441 p˂0,005) and FG (r=0,440; p˂0,005). Conclusion: Morning salivary cortisol in subjects with chronically elevated blood glucose can represent a downregulation of the hypothalamic-pituitary adrenal axis. This is an important finding not yet well investigated.


RESUMO Racional: Atualmente o estilo de vida expõe a população a diversos fatores de risco relacionados a hábitos alimentares e à inatividade física, contribuindo para o surgimento de doenças crônicas. Objetivo: Analisar a associação entre o cortisol salivar e os componentes da síndrome metabólica. Métodos: Estudo transversal com 28 indivíduos, idade entre 30 e 59 anos apresentando três ou mais dos seguintes achados: circunferência abdominal ≥88 cm (mulheres) e ≥102 cm (homens); pressão arterial sistólica >130 mmHg e pressão arterial diastólica >85 mmHg; glicemia >100 mg/dl; triglicerídeo >150 mg/dl; lipoproteína de alta densidade <40 mg/dl (homens) e <50 mg/dl (mulheres). Foram realizadas coletas do cortisol salivar nos seguintes horários 8 h, 12 h e 20 h e analisadas por radioimunoensaio. Resultados: A média de idade foi 51,9±7,5 anos, 64,3% eram mulheres e a média do índice de massa corporal foi 33,6±3,2 kg/m². O nível de cortisol salivar às 8 h teve média de 18,7±4,8 ng/dl. Os indivíduos com glicemia de jejum >110 mg/dl, apresentaram níveis médios de cortisol significativamente menores que os com glicemia de jejum <110 mg/dl (12,8±5,2 vs. 17,3±4,2). As correlações significativas foram HOMA vs. circunferência abdominal (r=0,465; p˂0,005) e triglicerídeos (r=0,473; p˂0,005), circunferência abdominal vs. glicemia de jejum (r=0,446; p˂0,005) e índice de massa corporal (r=0,730; p˂0,0001), triglicerídeos vs. lipoproteína de alta densidade (r=0,441 p˂0,005) e glicemia de jejum (r=0,440; p˂0,005). Conclusão: O cortisol salivar pela manhã, em indivíduos com glicemia cronicamente elevada, pode representar uma contraregulação do eixo hipotálamo-hipófise-adrenal, sendo achado importante e pouco investigado.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Saliva/chemistry , Hydrocortisone/analysis , Metabolic Syndrome/metabolism , Cross-Sectional Studies
16.
Braz. oral res. (Online) ; 32: e82, 2018. tab, graf
Article in English | LILACS | ID: biblio-952160

ABSTRACT

Abstract The etiopathogenesis of oral lichen planus (OLP) is still not fully elucidated, and it is believed that its development could involve a neuro-immune-endocrine profile. This systematic review investigated the relationship between cytokines, cortisol, and nitric oxide (NO) in the saliva of OLP patients. An electronic search was conducted in Pubmed/Medline, Scopus, LIVIVO, and Web of Science databases with no restriction of language to identify studies published up to December 2017. Data extraction was performed using the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) guidelines. A total of 140 articles were retrieved, and 32 articles fulfilled the inclusion criteria (cytokines = 17; cortisol = 9; NO = 6). The most studied cytokines in the saliva of OLP patients were interleukins IL-4, IL-6, IL-8, IFN-ү, and TNF-α, which were higher in OLP patients than in healthy controls (HC). Salivary cortisol was found to be higher in OLP than in HC in most (55.5%) of the selected studies, and all studies related to NO found higher levels of this marker in OLP than in HC. Despite controversial results, our review suggests that OLP patients have an increased inflammatory response, as indicated by the proinflammatory profile of salivary cytokines. In addition, we conclude that salivary cytokine and NO measurements may have significant diagnostic and prognostic potential for monitoring disease activity and therapeutic responses in OLP.


Subject(s)
Humans , Male , Female , Saliva/chemistry , Hydrocortisone/analysis , Cytokines/analysis , Lichen Planus, Oral/diagnosis , Nitric Oxide/analysis , Reference Standards , Biomarkers/analysis , Case-Control Studies , Lichen Planus, Oral/metabolism
17.
ImplantNewsPerio ; 2(6): 1100-1106, nov.-dez. 2017. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-880974

ABSTRACT

Objetivo: revisar o estresse como fator predisponente à instalação e desenvolvimento da doença periodontal, avaliando seus mecanismos biológicos e aspectos psicossociais. Material e métodos: uma revisão da literatura sobre o assunto foi realizada nas bases de dados PubMed e Scielo, utilizando as palavras-chave: estresse psicológico, doenças periodontais e cortisol. Resultados: a relação entre o estresse e a doença periodontal tem sido estudada desde a metade do século passado e apresenta-se de variadas formas clínicas, representando grandes impactos negativos em dimensões humanas e sociais. A maioria dos estudos publicados até o momento evidencia como os mecanismos do estresse influenciam a doença periodontal alterando a resposta inflamatória, imunológica e promovendo mudanças comportamentais. Conclusão: o estresse tem sido apontado como um possível fator de risco que infl uencia a instalação e a progressão das doenças periodontais. Contudo, os resultados obtidos ainda não estão defi nitivamente entendidos e estabelecidos.


Objective: to review stress as predisposing factor to installation and development of periodontal disease evaluating its biological mechanism and psychosocial aspects. Material and methods: a literature review about the subject was made through PubMed and Scielo databases using the keywords "psychological stress", "periodontal disease", and "cortisol". Results: the relation between stress and periodontal disease has been studied since the second half of the last century. The condition of stress is presented with various clinical forms and represent a negative impact in human and social dimension. It is discussed that the physiopathology mechanism of stress influences periodontal disease modifying infl ammatory and immunological responses and promote behavior changes. Conclusion: stress has been linked as the possible risk factor that infl uences installation and progression of periodontal disease. However the results are not yet definitively understood and established.


Subject(s)
Humans , Male , Female , Burnout, Professional/complications , Hydrocortisone/analysis , Periodontal Diseases/etiology , Saliva , Stress, Psychological/complications
18.
Arq. bras. med. vet. zootec. (Online) ; 69(4)jul.-ago. 2017. ilus, graf, tab
Article in English | LILACS, VETINDEX | ID: biblio-876508

ABSTRACT

The aim of this study was to evaluate newborn foals stress in the first 48 hours of life. Heart rate (HR), heart rate variability (HRV) and serum cortisol concentrations, blood glucose, and lactate were determined in foals (n = 20, Paint Horse). Cortisol concentrations decreased significantly between four and 48 hours, with the highest concentration at 4 hours after birth. Positive correlations between cortisol and lactate occurred between 12 and 16 hours. And there was a negative correlation between cortisol and lactate 4 hours after birth. Among the values obtained for HR, there was significantly difference between the the value obtained at twelve hours of life moment and all the other moments measured, the highest values were at birth, 24 and 48 hours of life. Among HRV indexes, there were no statistical differences between the variables analysed. The cortisol, HR and HRV alterations were consistent to neonatal stress, but might be related to extrauterine environment adaptation associated to sympathoadrenal response, since those foals were healthy.(AU)


O objetivo deste estudo foi avaliar o estresse em potros neonatos nas primeiras 48 horas de vida. FC, VFC, concentrações de cortisol sérico, glicemia e lactatemia foram determinadas em potros (n = 20; Paint Horse). As concentrações de cortisol reduziram significativamente, entre quatro e 48 horas, sendo o maior valor observado às quatro horas após o nascimento. Correlações positivas entre cortisol e lactato ocorreram entre 12 e 16 horas de vida. E ocorreu correlação negativa entre cortisol e lactato às quatro horas de vida. Os valores de FC divergiram significativamente entre os momentos ao nascimento, quatro, oito, 16, 20, 24, 36 e 48 horas quanto comparados com as 12 horas de vida, sendo os maiores valores ao nascimento, às 24 e às 48 horas. Entre os índices de VFC, não foram observadas diferenças estatísticas para as variáveis analisadas. As alterações encontradas para cortisol, FC e VFC são condizentes com um quadro de estresse neonatal, mas podem estar relacionadas com o período de adaptação à vida extrauterina, associada a uma resposta simpatoadrenal, visto que os potros apresentavam-se saudáveis.(AU)


Subject(s)
Animals , Animals, Newborn , Heart Rate , Horses , Stress, Physiological , Blood Glucose/analysis , Hydrocortisone/analysis
19.
Arch. argent. pediatr ; 115(3): 262-266, jun. 2017. graf, tab
Article in English, Spanish | LILACS, BINACIS | ID: biblio-887322

ABSTRACT

Introducción. Dada la dificultad en la interpretación de los valores de cortisol sérico en recién nacidos (RN), el objetivo de este estudio fue correlacionar los niveles basales de cortisol en el suero y la saliva, y describir las concentraciones de cortisol salival durante el primer mes de vida. Población y métodos. Estudio descriptivo, prospectivo, longitudinal y de correlación. Se seleccionaron RN de término del Servicio de Neonatología del Hospital Nacional Profesor Alejandro Posadas en 2014. En la saliva, se determinó cortisol; en la sangre, cortisol, globulina tansportadora de cortisol y albúmina. Se utilizó la correlación lineal para relacionar cortisol sérico y salival; el test de Friedman para comparar el cortisol durante el primer mes de vida y la diferencia para analizar el comportamiento de valores iguales o inferiores al primer cuartil. Resultados. Se evaluaron 55 RN. Cortisol sérico: 7,65 (1,0-18,1 gg/dl); cortisol salival: 35,88 (5,52107,64 nmol/L); globulina transportadora de cortisol: 22,07 (16,5-33,0 gg/µL), expresados como mediana y rango. El coeficiente de correlación entre el cortisol sérico y salival fue de 0,54; P= 0,001. El comportamiento del cortisol durante el primer mes de vida no mostró diferencias estadísticamente significativas y la diferencia entre la segunda y la primera muestra de valores iguales o inferiores al primer cuartil aumentó en 10 de 12 pacientes. Conclusión. La determinación de cortisol en la saliva refleja la concentración de cortisol sérico en RN normales. Algunos pacientes presentaron niveles bajos de cortisol a las 36 h de vida y mostraron una tendencia a incrementarse espontáneamente durante el primer mes de vida.


Introduction. Given that serum cortisol level interpretation in newborn infants (NBIs) is hard, the objective of this study was to correlate baseline salivary and serum cortisol levels and to describe salivary cortisol levels in the first month of life. Population and Methods. Descriptive, prospective, longitudinal, and correlational study. Term NBIs were selected from the Division of Neonatology of Hospital Nacional Profesor Alejandro Posadas in 2014. Cortisol was measured in saliva specimens while cortisol, cortisol-binding globulin, and albumin were measured in blood specimens. A linear correlation was performed to relate serum and salivary cortisol levels; Friedman test was conducted to compare cortisol levels during the first month of life, and the difference was used to analyze the performance of values equal to or lower than the first quartile. Results. Fifty-five NBIs were studied. Serum cortisol: 7.65 (1.0-18.1 gg/dL); salivary cortisol: 35.88 (5.52-107.64 mmol/L); cortisol-binding globulin: 22.07 (16.5-33.0 gg/µL), expressed as median and range. The correlation coefficient between serum and salivary cortisol was 0.54, P = 0.001. Cortisol performance during the first month of life showed no statistically significant differences, and the difference between the second and the first specimen of values equal to or lower than the first quartile increased in 10 out of 12 patients. Conclusion. The measurement of cortisol in saliva reflects serum cortisol levels in normal NBIs. Some patients had low levels of cortisol at 36 hours of life and showed a trend towards a spontaneous increase during the first month of life.


Subject(s)
Humans , Male , Female , Infant, Newborn , Saliva/chemistry , Hydrocortisone/analysis , Hydrocortisone/blood , Prospective Studies , Statistics as Topic , Longitudinal Studies
20.
Pesqui. vet. bras ; 37(5): 453-458, maio 2017. tab, graf, ilus
Article in Portuguese | LILACS, VETINDEX | ID: biblio-895433

ABSTRACT

Desmama é uma fase crítica na vida do suíno devido a separação materna e a introdução de uma dieta seca. A termografia infravermelha medida na região ocular se mostra como um indicador confiável para a condição de estresse pontual de suínos. O objetivo deste estudo foi determinar a relação entre medidas de termografia infravermelha da superfície ocular e de cortisol em situações de estresse em leitões na pós desmama. Foram avaliados 66 leitões, uma vez por semana, durante sete semanas, em dois períodos do dia (7h e 15h) com medidas de temperatura superficial ocular, temperatura superficial do dorso e amostras de saliva para determinação de cortisol salivar. A análise estatística contemplou os efeitos fixos de semana e período do dia e sua interação e correlações de Pearson para relação entre termografia ocular, temperatura superficial e cortisol a 5% de significância. Cortisol salivar não diferiu entre os períodos, mas foi superior nas três primeiras semanas após o desmame (P<0,05). Nas duas primeiras semanas após a desmama o cortisol apresentou correlação alta e positiva (P<0,05) com a temperatura ocular máxima (0,89) e a temperatura superficial do dorso (0,80). As duas temperaturas superficiais apresentaram uma associação moderada positiva (r=0,41; P<0,0001) durante todo o período experimental. Este estudo destaca que a temperatura de superfície ocular obtida por meio da termografia infravermelha pode ser um indicador de temperatura de superfície corporal e estado de bem-estar de leitões em fase de creche, além de ser um método não invasivo e de rápida mensuração. Entretanto, mais pesquisas são necessárias para aprofundar a relação entre temperatura ocular e cortisol durante estresse crônico.(AU)


Weaning is a critical phase in pigs' life due to maternal separation and the introduction of a new diet. Infrared thermography measurement taken in the ocular region appears to be a reliable indicator of the stress condition of the pig. The aim of this study was to evaluate the relationship between ocular surface temperature by infrared thermography and cortisol in piglets post weaning. Sixty-six piglets were evaluated once a week, during 7 weeks, in two periods of the day (7am and 15pm) and ocular surface temperature and dorsal surface temperature were collected using a thermographic camera and a laser surface thermometer, respectively. Saliva was also collected to determine salivary cortisol. Statistical analysis included fixed effects of week and period of the day and their interaction, and relationship between thermography, dorsal surface temperature and cortisol were done by Pearson's correlations with 5% significance level. Salivary cortisol did not differ between periods, but it was higher in the first three weeks after weaning (P<0.05). During the first two weeks after weaning cortisol presented high and positive correlation (P<0.05) between ocular surface temperature (0.89) and dorsal surface temperature (0.80). The two superficial temperatures had a moderate and positive association (r=0.41; P<0.0001) during all experiment. This study highlights that the ocular surface temperature obtained through infrared thermography can be a superficial body temperature indicators, besides being a non-invasive and fast method of measurement. However, more research is needed to deepen the relationship between ocular surface temperature and cortisol during chronic stress.(AU)


Subject(s)
Animals , Stress, Mechanical , Swine/physiology , Body Temperature , Hydrocortisone/analysis , Thermography/veterinary , Infrared Rays , Ocular Physiological Phenomena , Weaning , Animal Welfare
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