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1.
Gac Med Mex ; 159(3): 185-193, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37494711

RESUMO

BACKGROUND: Home confinement policies during the COVID-19 pandemic limited sun exposure and may have influenced on vitamin D levels. OBJECTIVE: To assess changes in 25(OH)D during the COVID-19 pandemic and the impact of Mandatory Preventive Social Isolation (MPSI) on UV radiation recommended dose modified by clouds for the synthesis of vitamin D (UVDVC). MATERIAL AND METHODS: A retrospective study was carried out on 15,908 patients in whom the level of 25(OH)D was determined between January 2019 and December 2021 in a centralized laboratory in Rosario, Argentina. RESULTS: Lower levels of 25(OH)D were documented in people younger than 40 years during 2020, as well as a variation during the pandemic period, with lower values in the first wave. Lower levels of 25(OH)D were recorded in the post-MPSI period in comparison with the MPSI period (p < 0.00001), in addition to a higher frequency of hypovitaminosis D (48.6% vs. 36.1%). These differences were not observed in the comparison of the same periods of 2019. UVDVC did not vary between 2019 and 2020. CONCLUSIONS: The restrictions due to the COVID-19 pandemic led to a higher frequency of hypovitaminosis D and lower frequency of optimal values.


ANTECEDENTES: Las políticas de confinamiento domiciliario durante la pandemia de COVID-19 limitaron la exposición solar y pudieron influir en los niveles de vitamina D. OBJETIVO: Evaluar los cambios en 25(OH)D durante la pandemia de COVID-19 y el impacto del aislamiento social, preventivo y obligatorio (ASPO) en la dosis recomendada de radiación UV modificada por las nubes para la síntesis de vitamina D (UVDVC). MATERIAL Y MÉTODOS: Se realizó un estudio retrospectivo de 15 908 pacientes en quienes se determinó el nivel de 25(OH)D entre enero de 2019 y diciembre de 2021 en un laboratorio centralizado en Rosario, Argentina. RESULTADOS: Se constataron niveles más bajos de 25(OH)D en menores de 40 años durante 2020, así como una variación durante el período pandémico, con menores valores en la primera ola. Se registraron menores niveles de 25(OH)D en el período posterior al ASPO en comparación con el período de ASPO (p < 0.00001), además de mayor frecuencia de hipovitaminosis D (48.6 % versus 36.1 %). No se observaron estas diferencias en la comparación de los mismos períodos de 2019. La UVDVC no varió entre 2019 y 2020. CONCLUSIONES: Las restricciones por la pandemia de COVID-19 llevaron a mayor frecuencia de hipovitaminosis D y menor frecuencia de valores óptimos.


Assuntos
COVID-19 , Deficiência de Vitamina D , Humanos , Raios Ultravioleta , COVID-19/epidemiologia , COVID-19/prevenção & controle , Pandemias , Estudos Retrospectivos , Controle de Doenças Transmissíveis , Vitamina D , Deficiência de Vitamina D/epidemiologia
2.
Gac. méd. Méx ; 159(3): 190-198, may.-jun. 2023. tab, graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1448276

RESUMO

Resumen Antecedentes: Las políticas de confinamiento domiciliario durante la pandemia de COVID-19 limitaron la exposición solar y pudieron influir en los niveles de vitamina D. Objetivo: Evaluar los cambios en 25(OH)D durante la pandemia de COVID-19 y el impacto del aislamiento social, preventivo y obligatorio (ASPO) en la dosis recomendada de radiación UV modificada por las nubes para la síntesis de vitamina D (UVDVC). Material y métodos: Se realizó un estudio retrospectivo de 15 908 pacientes en quienes se determinó el nivel de 25(OH)D entre enero de 2019 y diciembre de 2021 en un laboratorio centralizado en Rosario, Argentina. Resultados: Se constataron niveles más bajos de 25(OH)D en menores de 40 años durante 2020, así como una variación durante el período pandémico, con menores valores en la primera ola. Se registraron menores niveles de 25(OH)D en el período posterior al ASPO en comparación con el período de ASPO (p < 0.00001), además de mayor frecuencia de hipovitaminosis D (48.6 % versus 36.1 %). No se observaron estas diferencias en la comparación de los mismos períodos de 2019. La UVDVC no varió entre 2019 y 2020. Conclusiones: Las restricciones por la pandemia de COVID-19 llevaron a mayor frecuencia de hipovitaminosis D y menor frecuencia de valores óptimos.


Abstract Background: Home confinement policies during the COVID-19 pandemic limited sun exposure and may have influenced on vitamin D levels. Objective: To assess changes in 25(OH)D during the COVID-19 pandemic and the impact of Mandatory Preventive Social Isolation (MPSI) on UV radiation recommended dose modified by clouds for the synthesis of vitamin D (UVDVC). Material and methods: A retrospective study was carried out on 15,908 patients in whom the level of 25(OH)D was determined between January 2019 and December 2021 in a centralized laboratory in Rosario, Argentina. Results: Lower levels of 25(OH)D were documented in people younger than 40 years during 2020, as well as a variation during the pandemic period, with lower values in the first wave. Lower levels of 25(OH)D were recorded in the post-MPSI period in comparison with the MPSI period (p < 0.00001), in addition to a higher frequency of hypovitaminosis D (48.6% vs. 36.1%). These differences were not observed in the comparison of the same periods of 2019. UVDVC did not vary between 2019 and 2020. Conclusions: The restrictions due to the COVID-19 pandemic led to a higher frequency of hypovitaminosis D and lower frequency of optimal values.

3.
Rev Fac Cien Med Univ Nac Cordoba ; 79(4): 353-357, 2022 12 21.
Artigo em Inglês | MEDLINE | ID: mdl-36542589

RESUMO

INTRODUCTION: Levothyroxine (LT4) has been considered the standard of care for treatment of hypothyroidism. Current recommendations suggest a LT4 dose between 1.6-1.8 µg/kg/day. The aim of this study was to evaluate the LT4 dose for adult patients with primary hypothyroidism of different etiologies who reached euthyroidism. METHODS: A cross-sectional study was performed from the retrospective review of the charts of patients with primary hypothyroidism in treatment with LT4. Subjects were classified according to TSH level in overtreated (TSH < 0.4 µIU/ml), euthyroid (TSH 0.40-4.20), and undertreated (TSH >4.2) and according to the etiology of hypothyroidism. A stepwise logistic regression model was performed to evaluate the variables associated with TSH<0.4 µIU/ml. RESULTS: 955 patients were included. 75.13% of the patients had an adequate LT4 replacement. LT4 dose to achieve euthyroidism was higher in patients with a history of radioiodine therapy (1.92 µg/kg) and thyroid surgery (1.52 µg/kg), while the LT4 dose required to achieve euthyroidism in patients with Hashimoto's thyroiditis and atrophic thyroiditis was lower than that reported in previous studies (1.25 and 1.08 µg/kg, respectively). The variables that were associated with a higher probability of TSH<0.4 µIU/ml were male gender, Hashimoto's thyroiditis, radioiodine therapy, and thyroid surgery. MAJOR CONCLUSION: LT4 dose required to achieve euthyroidism in patients with hypothyroidism varies according to the etiology, being higher in patients with hypothyroidism due to radioiodine therapy and thyroid surgery. Patients with hypothyroidism due to Hashimoto's thyroiditis and atrophic thyroiditis require a lower dose than current recommendations.


Introducción: La levotiroxina (LT4) se considera el estándar de tratamiento del hipotiroidismo. Las recomendaciones actuales sugieren una dosis de LT4 entre 1,6-1,8 µg/kg/día. El objetivo de este estudio fue evaluar la dosis de LT4 en pacientes adultos con hipotiroidismo primario de diferentes etiologías que alcanzaron el eutiroidismo. Métodos: Estudio transversal a partir de la revisión retrospectiva de historias clínicas de pacientes con hipotiroidismo primario en tratamiento con LT4. Los sujetos se clasificaron según el nivel de TSH en sobretratados (TSH<0,4 µUI/ml), eutiroideos (TSH 0,40-4,20) y subtratados (TSH>4,2) y según la etiología del hipotiroidismo. Se realizó un modelo de regresión logística escalonada para evaluar las variables asociadas con TSH <0,4 µUI/ml. Resultados: Se incluyeron 955 pacientes. El 75,13% tuvo un reemplazo adecuado de LT4. La dosis de LT4 para lograr el eutiroidismo fue mayor en pacientes con antecedentes de terapia con yodo radiactivo (1,92 µg/kg) y cirugía de tiroides (1,52 µg/kg), mientras que la dosis de LT4 para lograr el eutiroidismo en pacientes con tiroiditis de Hashimoto y tiroiditis atrófica fue menor que el reportado en estudios previos (1,25 y 1,08 µg/kg, respectivamente). Las variables que se asociaron con una mayor probabilidad de TSH<0,4 µUI/ml fueron el sexo masculino, tiroiditis de Hashimoto, terapia con yodo radiactivo y cirugía de tiroides. Conclusión principal: La dosis de LT4 necesaria para alcanzar el eutiroidismo en pacientes con hipotiroidismo varía según la etiología, siendo mayor en pacientes con hipotiroidismo por tratamiento con yodo radiactivo y cirugía tiroidea. Los pacientes con hipotiroidismo debido a tiroiditis de Hashimoto y tiroiditis atrófica requieren una dosis más baja que las recomendaciones actuales.


Assuntos
Doenças Autoimunes , Hipotireoidismo , Tireoidite , Adulto , Humanos , Masculino , Feminino , Tiroxina/uso terapêutico , Radioisótopos do Iodo/uso terapêutico , Estudos Transversais , Tireotropina/uso terapêutico , Hipotireoidismo/tratamento farmacológico , Hipotireoidismo/etiologia , Doenças Autoimunes/tratamento farmacológico , Tireoidite/tratamento farmacológico
4.
Endocrinol Diabetes Nutr (Engl Ed) ; 68(8): 542-547, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34872637

RESUMO

INTRODUCTION: Although, it is generally held that the levothyroxine (LT4) dose tends to decrease with age, this theory remains controversial. Our objective was to assess whether the LT4 dose required to achieve euthyroid status varies according to age, body weight (BW), sex, menopausal status, or antibody status. MATERIALS AND METHODS: A cross-sectional study was performed from the retrospective review of the charts of patients with a previous diagnosis of primary hypothyroidism in treatment with LT4 and in a euthyroid state. Sex, age, actual body weight (ABW), TSH, and LT4 dose were recorded. Patients were grouped according to age ranges (18-44, 45-65, and over 65 years). A euthyroid state was defined as a serum TSH within the range of 0.4-4µIU/ml. A multiple linear regression model was performed to assess the LT4 dose and age, gender, antibody status, and ABW. RESULTS: A total of 882 charts of patients were reviewed. 586 patients met the inclusion criteria. The median age was 55 years. There was no correlation between the LT4 dose and age. A positive correlation was observed between the LT4 dose and ABW, but not with the ideal BW. Linear regression analysis showed that positivity antibody and ABW have a significant effect on the LT4 dose. Comparison of the LT4 dose between the different age groups showed no difference. CONCLUSION: Our study demonstrates that the dose of LT4 necessary to achieve euthyroidism is influenced by ABW and the presence of antibodies. Age and menopause did not influence the required daily dose of LT4.


Assuntos
Hipotireoidismo , Tiroxina , Adolescente , Peso Corporal , Estudos Transversais , Feminino , Humanos , Hipotireoidismo/tratamento farmacológico , Pessoa de Meia-Idade , Estudos Retrospectivos , Tireotropina , Tiroxina/uso terapêutico
5.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-33750680

RESUMO

INTRODUCTION: Although, it is generally held that the levothyroxine (LT4) dose tends to decrease with age, this theory remains controversial. Our objective was to assess whether the LT4 dose required to achieve euthyroid status varies according to age, body weight (BW), sex, menopausal status, or antibody status. MATERIALS AND METHODS: A cross-sectional study was performed from the retrospective review of the charts of patients with a previous diagnosis of primary hypothyroidism in treatment with LT4 and in a euthyroid state. Sex, age, actual body weight (ABW), TSH, and LT4 dose were recorded. Patients were grouped according to age ranges (18-44, 45-65, and over 65 years). A euthyroid state was defined as a serum TSH within the range of 0.4-4µIU/ml. A multiple linear regression model was performed to assess the LT4 dose and age, gender, antibody status, and ABW. RESULTS: A total of 882 charts of patients were reviewed. 586 patients met the inclusion criteria. The median age was 55 years. There was no correlation between the LT4 dose and age. A positive correlation was observed between the LT4 dose and ABW, but not with the ideal BW. Linear regression analysis showed that positivity antibody and ABW have a significant effect on the LT4 dose. Comparison of the LT4 dose between the different age groups showed no difference. CONCLUSION: Our study demonstrates that the dose of LT4 necessary to achieve euthyroidism is influenced by ABW and the presence of antibodies. Age and menopause did not influence the required daily dose of LT4.

6.
Arch. med. interna (Montevideo) ; 37(1): 7-14, mar. 2015. ilus
Artigo em Espanhol | LILACS | ID: lil-754169

RESUMO

Utilizando bases de datos Medline, Science Direct, Endocrine Society y Sociedad Argentina de Andrología se realizó una revisión bibliográfica para estudiar e interpretar el efecto del estrés oxidativo (EO) en el proceso reproductivo. Los seres vivos que utilizan oxígeno para obtener energía son liberadores de especies reactivas de oxígeno (ERO). Existen situaciones andrológicas, factores medioambientales y compuestos químicos que incrementan las citoquinas proinflamatorias, generan EO alterando la regulación del proceso espermatogénico. Los espermatozoides son susceptibles al daño oxidativo, debido al elevado contenido de ácidos grasos poliinsaturados (AGPI) en su membrana y el escaso citoplasma que limita el contenido de enzimas antioxidantes. El EO induce daño peroxidativo en la membrana espermática y fragmentación del ADN en los genomas nucleares y mitocondriales. El test estrés espermático modificado (MOST) estima la resistencia espermática a la lipoperoxidación. El incremento de ERO en hombres con trastornos reproductivos y su correlación con alteraciones seminales revelan la importancia de la evaluación del EO en el estudio integral del hombre que consulta por infertilidad.


Data from Medline, Science Direct, Endocrine Society and organisms of information of Argentina Society of Andrology were used to study and interpret the effect of oxidative stress (OS) in the reproductive process. The living things use the oxygen for energy they release reactive oxygen species (ROS). There andrology situations enviromental factors, chemical agents that increase of proinflammatory cytokines, OS generated by altering the regulation of spermatogenesis process. The spermatozoids due to high concentration of polyunsaturated fatty acids (PFA) in its membrane are sensitive to the oxidative damage induced for ROS and it also contain low levels of antioxidant enzymes for their limited cytoplasm. OS induced peroxidative damage in sperm membrane and DNA fragmentation in the nuclear and mitochondrial genomes. The modified sperm stress test (MOST) estimates sperm resistance to lipoperoxidation. The ROS increased in men with reproductive disorders and its correlation with seminal alterations reveal the importance of the evaluation of OS in the study of man consulting for infertility.

7.
Rev. habanera cienc. méd ; 10(2)abr.-jun. 2011. graf
Artigo em Espanhol | LILACS | ID: lil-615800

RESUMO

Se relacionó la exposición ocupacional a agroquímicos con parámetros seminales vinculados con la espermatogénesis. En 104 muestras seminales de pacientes con infertilidad idiopática y 20 a 45 años de edad del Servicio de Reproducción Hospital Centenario (Rosario, Argentina), se efectuó espermograma y estudios funcionales según normas OMS (1999). Se agruparon en G1 (n=42) trabajadores expuestos a agroquímicos y G2 (n=62) hombres sin riesgo espermatogénico. La concentración espermática se determinó en cámara de Neubauer, con Papanicolaou se evaluó la concentración de células germinales y la morfología espermática. Se observó en concentración espermática (espermatozoides.10(6)/ml) G1: 21,1±7,1; G2: 41,6±9,2; morfología ( por ciento espermatozoides normales) G1: 5,2±1,3; G2: 8,2±3,6 y células germinales.10(6)/ml en G1: 0,91±0,51; G2: 0,32±0,21. La concentración espermática fue menor en G1, las alteraciones morfológicas y células germinales mayores en G1. Estos resultados indican que la exposición a agroquímicos altera la espermatogénesis y es un factor a considerar cuando se estudia infertilidad masculina.


The occupational exposition to agrochemicals was related with sperm parameters linked with spermatogenesis. In 104 semen samples of patients with idiopatic infertility of the Reproduction Service of Centenario Hospital (Rosario, Argentina), sperm study and functional tests according to WHO (1999) have been carried out. Two groups were formed: G1 (n=42) workers exposed to agrochemicals; G2 (n=62) men with no spermatogenic risk. The sperm concentration was determined in Neubauer camera, the concentration of germinal cells and the sperm morphology were evaluated with Papanicolaou. The results were: sperm concentration (spermatozoids 10(6)/ml) G1: 21.1 ± 7.1; G2: 41.6 ± 9.2; morphology ( percent normal spermatozoids) G1: 5.2 ± 1.3; G2: 8.2 ± 3.6; and germinal cells 10(6)/ml in G1: 0.91 ± 0.51; G2: 0.32 ± 0.21. The sperm concentration was lower in G1, major morphological changes and germinal cells in G1. This results show that the exposition to agrochemicals alters the spermatogenesis, it is a factor to consider in the male infertility.

8.
Rev. habanera cienc. méd ; 6(4)oct.-dic. 2007.
Artigo em Espanhol | LILACS | ID: lil-629794

RESUMO

La membrana espermática tiene ácidos grasos insaturados que la tornan vulnerable al ataque de sustancias oxígeno reactivas. Los espermatozoides poseen sistemas protectores, pero un desbalance entre pro y antioxidantes produce “estrés oxidativo". Objetivo: estudiar en semen de hombres infértiles, el efecto del estrés oxidativo sobre la membrana y núcleo espermático. Se analizaron muestras seminales de 142 hombres infértiles. Se efectuó espermograma, se seleccionaron 83 muestras sin aglutinación ni hiperviscosidad y con concentración espermática mayor a 5 x 10 6 /ml. Se estudió la membrana espermática con Test Hipoosmótico, la condensación cromatínica con Azul de Anilina y el ADN con Naranja de Acridina. Para estrés oxidativo se aplicó el Test MOST (movilidad traslativa final/movilidad traslativa inicial) que evalúa la pérdida de movilidad de los espermatozoides luego de ser incubados por 4 hs. en baño de agua a 40 °C. Se agruparon las muestras en G1: MOST mayor o igual a 0.40 (normal) y G2: MOST menor a 0.40 (anormal). El análisis estadístico demostró diferencia significativa (p<0.003) en las 3 pruebas funcionales. El estrés oxidativo altera estructuras espermáticas esenciales.


The spermatozoids have in its plasmatic membrane high concentrations of unsaturated fatty acids, vulnerable to the attack of the reactive oxygen substances. The male gamete has protective systems, the distortion between pro and antioxidizers produces “oxidative stress". Objective: to study samples of semen from infertile men, the effect of oxidative stress on the sperm membrane and the nucleus. 142 semen samples were analyzed from infertile men. The sperm study was evaluated according to OMS and 83 samples without agglutination and hiperviscosity with concentration of spermatozoids more of 5 x 10 6 /ml were chosen. The sperm membrane was studied with the Hipoosmotic Test, the maturity of chromatina with blue aniline and the nuclear AND with acridine orange. The EO was evaluated with the MOST test (motility end/motility initial) measuring the loss of motility of the spermatozoids incubated at 40ºC in a water bath for 4 hours, separating the samples in : G1 : MOST major or equal to 0.40 (normal) G2 : MOST under to 0.40 ( abnormal). The statistic analysis of the three tests showed significant difference (p<0.003). The oxidative stress affects essential structures.

9.
Arch Esp Urol ; 60(3): 273-7, 2007 Apr.
Artigo em Espanhol | MEDLINE | ID: mdl-17601302

RESUMO

OBJECTIVES: Our objective was to relate the tobacco with seminal spermatogenic parameters such as sperm morphology, concentration of spermatozoids and germinal cells in samples of semen from men with idiopatic infertility. METHODS: A prospective study was carried out on a population of 131 men with idiopatic infertility that attended the Reproduction Service of Centenario Hospital in Rosario from may 2004 to june 2006. Sperm study according to WHO was carried out evaluating germinal cells and sperm morphology with Papannicolaou. The concentration of spermatozoids was determined by means of a subjective method with Neubauer camera. The studied population was divided in the three groups: G1: smokers more of 20 cigarettes/day, G2: smokers under 20 cigarettes/day, G3 non smokers. The smokers had had the habit for over a year. RESULTS: Results were analyzed with the student's t-test. Statistically significant differences between G1 vs G3 (p<0.001) and G2 vs G3 (p<0.005) were found for the three variables. No significant difference was found between the groups of smokers G1 vs G2 (p>0.1). CONCLUSIONS: The results show that tobacco alters sperm concentration and morphology with an increase of immature forms, demonstrating an altered spermatogenesis process. The consumption of tobacco should be evaluated to carry out the integral study of infertile man.


Assuntos
Infertilidade Masculina/etiologia , Fumar/efeitos adversos , Espermatogênese , Contagem de Células , Células Germinativas , Humanos , Infertilidade Masculina/patologia , Masculino , Estudos Prospectivos , Contagem de Espermatozoides , Espermatozoides/citologia
10.
Arch. esp. urol. (Ed. impr.) ; 60(3): 273-277, abr. 2007. ilus, tab
Artigo em Es | IBECS | ID: ibc-055384

RESUMO

Objetivo: Relacionar en hombres con infertilidad idiopática, el tabaquismo con parámetros seminales espermatogénicos, tales como morfología espermática, concentración de espermatozoides y células germinales en muestras de semen fresco. Métodos: Se realizó un estudio prospectivo en 131 hombres con infertilidad idiopática que asistieron al Servicio de Reproducción del Hospital Centenario de Rosario desde mayo de 2004 a junio de 2006. Se realizó espermograma según normas OMS evaluando células germinales y morfología espermática con tinción Papanicolaou. La concentración de espermatozoides se determinó por el método subjetivo con cámara de Neubauer. La población en estudio se dividió en 3 grupos G1 fumadores de más de 20 cig/día, G2 fumadores de menos de 20 cig/día y G3 hombres no fumadores. Los fumadores lo hacían al menos desde hace un año. Resultados: Los resultados obtenidos se analizaron mediante la prueba t Student, encontrándose diferencia estadísticamente significativa para las 3 variables entre G1 vs G3 (p<0.001) y G2 vs G3 (p<0.005). .No se encontró diferencia significativa entre los grupos de fumadores G1vsG2 (p>0.1). Conclusiones: El tabaco altera la concentración y morfología espermática con aumento de formas espermáticas inmaduras que manifiestan un proceso espermatogénico alterado. El consumo de tabaco debe ser evaluado al realizar un estudio integral del hombre infértil (AU)


Objectives: Our objetive was to relate the tobacco with seminal spermatogenic parameters such as sperm morphology, concentration of spermatozoids and germinal cells in samples of semen from men with idiopatic infertility. Methods: A prospective study was carried out on a population of 131 men with idiopatic infertility that attended the Reproduction Service of Centenario Hospital in Rosario from may 2004 to june 2006. Sperm study according to WHO was carried out evaluating germinal cells and sperm morphology with Papannicolaou. The concentration of spermatozoids was determined by means of a subjective method with Neubauer camera. The studied population was divided in the three groups: G1: smokers more of 20 cigarettes/day, G2: smokers under 20 cigarettes/day, G3 non smokers. The smokers had had the habit for over a year. Results: Results were analyzed with the student’s t-test. Statistically significant differences between G1 vs G3 (p<0.001) and G2 vs G3 (p<0.005) were found for the three variables. No significant difference was found between the groups of smokers G1 vs G2 (p>0.1). Conclusions: The results show that tobacco alters sperm concentration and morphology with an increase of immature forms, demonstrating an altered spermatogenesis process. The consumption of tobacco should be evaluated to carry out the integral study of infertile man (AU)


Assuntos
Masculino , Adulto , Humanos , Espermatogênese , Infertilidade Masculina/complicações , Infertilidade Masculina/diagnóstico , Tabagismo/efeitos adversos , Células Germinativas/patologia , Sêmen , Espermatogênese/fisiologia , Estudos Prospectivos
11.
Arch. esp. urol. (Ed. impr.) ; 58(10): 1049-1054, dic. 2005. ilus
Artigo em Es | IBECS | ID: ibc-044338

RESUMO

OBJETIVO: Evaluar en pacientes infértiles, la calidad espermática pre y post swim up y compararlacon una población de hombres fértiles.MÉTODOS: De 55 pacientes que asistieron al Servicio de Reproducción del Hospital Centenario de Rosario a los que se efectuó espermograma y estudios funcionales espermáticos según normas OMS (1999), se seleccionaron30 muestras de semen con volumen mayor de 1.0 ml, concentración de espermatozoides mayor de 5.000.000/ml y que no presentaban hiperviscosidad. Se compararon los resultados obtenidos de: movilidad progresiva (MP), morfología (M), condensación de la cromatina (CC) e integridad de la cromatina (IC), en el semen fresco sin tratar (G2) y luego del swim-up (G3), con los valores obtenidos en muestras de semen frescode 15 hombres fértiles (G1). Se utilizó microscopio óptico para estudiar la movilidad espermática progresiva,tinción Hematoxilina-Verde Brillante para analizar la morfología, azul de anilina para evaluar la condensaciónde la cromatina y el fluorocromo naranja de acridina para analizar la integridad de la cromatina. La técnica de recuperación espermática utilizada fue el swim-up, que se realizó en medio HTF, incubando en tubo Falcon a 45 ° en estufa de 37 °C gaseada (atmósfera de CO2 5%) durante 1 hora. Luego se tomaronde la capa superior los espermatozoides que sobrenadaron,en los que se efectuaron las prácticas post swim-up. Se aplicó la prueba t - Student a los valores de los parámetros MP, M, CC e IC en los 3 grupos de pacientes, observándose diferencia significativa para los cuatro parámetros al comparar G1 vs. G2 y G2 vs. G3 (p0.1), lo cual indica que los parámetros estudiados MP, M, CC e IC, en los espermatozoidesrecuperados del swim-up, son semejantes a la población de hombres fértiles.RESULTADOS: Estos resultados muestran que mediante swim-up se pueden recuperar gametas con capacidad fecundante potencial semejante a la población fértil, para aplicar en técnicas de reproducción asistida de baja complejidad, como la inseminación intrauterina, donde la selección natural es aún viable


OBJECTIVES: To investigate sperm quality before and after swim up in infertile patients, and to compare it with a fertile men population. METHODS: Semen samples from 55 patients consulting at the infertility services of the Hospitals “Centenario” in Rosario and “Eva Perón” in Gro Baigorria were collected and analyzed accordingly with the WHO guidelines. 30 sperm samples with a volume higher than 1.0 ml, and spermatozoid concentration higher than 5.000.000/ml, not presenting hyperviscosity were selected. Outcome variables including progressive mobility (PM), morphology (M), chromatin condensation (CC) and chromatin integrity (CI), were compared in fresh semen samples, between patients without previous treatment (G2) and after swim up (G3) and 15 fertile men (G1). Sperm morphology was evaluated by brilliant green hematoxyllin stain ;progressive mobility with a subjective method accordingly to WHO (1999); chromatin condensation with aniline blue test; and chromatin integrity with acridine orange as fluorocrom. Swim up technique was based on Berger et al. (1985) with mHTF, heatingthe samples in a Falcon tube in a 45º angle in a 37ºC gas heater for one hour (5% C02 atmosphere). Following incubation 0.5 ml of the overlay containing sperm cells that swam up from the pellet were removed to process the recovered spermatozoids. Student’s t test was applied to compare PM, M, CC, and CI between the four groups. A significant difference was found between G1 vs G3 and G2 vs G3 (p 0.1). It showed that PM, M, CC and CI parameters in the recovered spermatozoids after swim up were similar to fertile population. CONCLUSIONS: Our results indicate that through the swim up procedure gametes with fertile ability similar to normal fertile population can be recovered to be applied in low complexity in vitro fertilization techniques such as intrauterine insemination, where the natural selection is still viable


Assuntos
Masculino , Humanos , Fertilização , Infertilidade Masculina , Espermatozoides/fisiologia
12.
Arch Esp Urol ; 58(10): 1049-54, 2005 Dec.
Artigo em Espanhol | MEDLINE | ID: mdl-16482855

RESUMO

OBJECTIVES: To investigate sperm quality before and after swim up in infertile patients, and to compare it with a fertile men population. METHODS: Semen samples from 55 patients consulting at the infertility services of the Hospitals "Centenario" in Rosario and "Eva Perón" in Gro Baigorria were collected and analyzed accordingly with the WHO guidelines. 30 sperm samples with a volume higher than 1.0 ml, and spermatozoid concentration higher than 5,000,000/ml, not presenting hyperviscosity were selected. Outcome variables including progressive mobility (PM), morphology (M), chromatin condensation (CC) and chromatin integrity (CIl, were compared in fresh semen samples, between patients without previous treatment (G2) and after swim up (G3) and 15 fertile men (G1). Sperm morphology was evaluated by brilliant green hematoxyllin stain; progressive mobility with a subjective method accordingly to WHO (1999); chromatin condensation with aniline blue test; and chromatin integrity with acridine orange as fluorocrom. Swim up technique was based on Berger et al. ( 1985) with mHTF, heatingthe samples in a Falcon tube in a 45 degree angle in a 37 degree C gas heater for one hour (5% CO2 atmosphere). Following incubation 0.5 ml of the overlay containing sperm cells that swam up from the pellet were removed to process the recovered spermatozoids. Student's t test was applied to compare PM, M, CC, and CI between the four groups. A significant difference was found between G1 vs G3 and G2 vs G3 (p < 0.001). No significant differences were found between G1 and G3 (p > 0.1). It showed that PM, M, CC and C1 parameters in the recovered spermatozoids after swim up were similar to fertile population. CONCLUSIONS: Our results indicate that through the swim up procedure gametes with fertile ability similar to normal fertile population can be recovered to be applied in low complexity in vitro fertilization techniques such as intrauterine insemination, where the natural selection is still viable.


Assuntos
Fertilização , Infertilidade Masculina , Espermatozoides/fisiologia , Humanos , Masculino
13.
Arch Esp Urol ; 57(5): 533-7, 2004 Jun.
Artigo em Espanhol | MEDLINE | ID: mdl-15382571

RESUMO

OBJECTIVE: Our purpose was to study, in semen samples of infertile patients, the relationship between the Modified Sperm Stress Test (MOST) and the presence of antisperm antibodies (ASA), macrophages concentration and the Hypoosmotic Swelling Test (HOST). METHODS: Semen samples from 42 men undergoing evaluation for infertility were examined according to WHO criteria. Twenty-five of them, whithout clumping non hyperviscosity, were selected. The MOST test was applied according to the author's original technique. ASA were determined with a direct mixed agglutination test, TAC II, developed and validate by our group. Macrophage concentration was evaluated with Neutral Red stain, and functional integrity of the sperm membrane with the Hypoosmotic Swelling Test using an hypoosmotic solution of 150 mOm/ml composed of equal parts of fructose and sodium citrate. RESULTS: The Chi square test was applied to the observational data obtaining the following results: There was a statistically significant association between the presence of ASA and altered MOST (p<0.001). In all samples with ASA, abnormal MOST values were obtained (MOST<0.39). Besides, there is a statistically significant association exists between the increased concentration of macrophages and abnormal MOST (p<0.01); and altered HOST was positively correlated with abnormal MOST (p<0.02). CONCLUSION: Results clearly demonstrate the high predictive power of MOST like a test of sperm resistance to the forced lipoperoxidation, offering conditions to become a good predictor of sperm performance. Understanding the sperm resistance to the ROS and their harmfull effects on the sperm functions, a proportion of infertile men can be succesfully treated.


Assuntos
Estresse Oxidativo , Espermatozoides/imunologia , Autoanticorpos/imunologia , Humanos , Testes Imunológicos , Macrófagos/imunologia , Masculino
14.
Arch Esp Urol ; 56(9): 983-7, 2003 Nov.
Artigo em Espanhol | MEDLINE | ID: mdl-14674282

RESUMO

OBJECTIVES: To investigate the presence of macrophages in human semen samples and the function they carry out in the seminal fluid. Their presence was studied in relation to spermatic morphology, percentage of spermatozoids with native DNA, and presence of antispermatic antibodies. METHODS AND RESULTS: The work was performed with semen samples from 31 unfertile males from 63 couples in which the "female factor" was ruled out as the cause of infertility. Sperm study according to WHO (1992) was carried out in all samples, in addition to: DNA study with acridine orange as fluorocrom, macrophage concentration by neutral red in a Neubauer camera, and detection of antispermatic antibodies with a mixed agglutination test (TAC II) (validated with Mar Screen-Fertility technologies). Sperm morphology was evaluated by Papanicolaou test. 19/31 selected sperm samples (61.3%) showed increased concentration of macrophages, 13 of them (41.9%) with denaturalized DNA, and 8 (25.8%) abnormal morphology. Six samples showed increased macrophage concentration and predominance of native DNA, whereas 11 samples showed increased macrophages and abnormal morphology. Among 18 (58.1%) samples showing antispermatic antibodies 14 (77.7%) had an increased concentration of macrophages. Statistical analysis resulted in a high correlation between macrophage concentration and increased percentage of spermatozoids with denaturalized DNA (p < 0.05). An increased concentration of macrophages is associated with the presence of antispermatic antibodies (p < 0.05). There was not evidence of significant association between concentration of macrophages and percentage of morphologically normal spermatozoids (p < 0.05). CONCLUSIONS: We can conclude that macrophages are present in human semen and participate in immunovigilance contributing to improve the seminal quality.


Assuntos
Macrófagos , Sêmen/citologia , Contagem de Células , Distribuição de Qui-Quadrado , Humanos , Masculino , Contagem de Espermatozoides
15.
Arch. esp. urol. (Ed. impr.) ; 56(9): 983-987, nov. 2003.
Artigo em Es | IBECS | ID: ibc-25132

RESUMO

OBJETIVO: Nuestro objetivo fue investigar la presencia de macrófagos en muestras de semen humano y la función que los mismos desempeñan en el fluido seminal. Para ello se los relacionó con morfología espermática, porcentaje de espermatozoides con ADN nativo y presencia de anticuerpos antiespermáticos (AAE). MÉTODO Y RESULTADOS: Se trabajó con muestras de semen de 31 hombres infértiles provenientes de 63 parejas en las que se descartó el "factor femenino" como causa de infertilidad. En todas ellas se efectuó espermograma según normas O.M.S., además de: estudio del ADN con Naranja de Acridina como fluorocromo; la concentración de macrófagos que se realizó con Rojo Neutro en cámara de Neubauer y la investigación de anticuerpos antiespermáticos con el test de aglutinación mixta TAC II (Validado frente a Mar Screen- Fertility Technologies). Para evaluar la morfología espermática se utilizó tinción Papanicolaou. De las 31 muestras de semen seleccionadas en 19 (61,3 por ciento) se observó concentración aumentada de macrófagos, de las cuales 13 (41,9 por ciento) presentaban ADN desnaturalizado y 8 (25,8 por ciento) morfología anormal. Seis de las muestras presentaron concentración de macrófagos aumentados y predominio de ADN nativo, mientras que once tenían macrófagos aumentados y morfología alterada . De las 18 (58,1 por ciento) muestras que presentaban AAE hubo 14 (77,7 por ciento) con concentración de macrófagos aumentada. De los estudios estadísticos realizados surge que, la concentración de macrófagos está altamente correlacionada con un aumento del porcentaje de espermatozoides con ADN desnaturalizado (p<0,05). La concentración aumentada de macrófagos está asociada a la presencia de AAE. (p<0,05). No se encontró asociación significativa entre la concentración de macrófagos y el porcentaje de espermatozoides morfológicamente normales (p<0,5). CONCLUSION: Podemos concluir que los macrófagos están presentes en el semen humano y participan en la inmunovigilancia contribuyendo a mejorar la calidad seminal (AU)


Assuntos
Masculino , Humanos , Macrófagos , Sêmen , Contagem de Espermatozoides , Distribuição de Qui-Quadrado , Contagem de Células
16.
Arch. esp. urol. (Ed. impr.) ; 54(3): 199-203, abr. 2001.
Artigo em Es | IBECS | ID: ibc-2320

RESUMO

OBJETIVO: El objetivo de este trabajo fue evaluar si existe asociación entre los tests de integridad de membrana espermática y la expresión normal o alterada de los glicoesfingolipidos ABH de la misma. MÉTODO: Se trabajó con un grupo de 50 hombres que consultaron por infertilidad en los laboratorios de Reproducción del Hospital Escuela Eva Perón de Granadero Baigorria y del Hospital Provincial del Centenario de la ciudad de Rosario (Rep, Argentina.) Las muestras de semen fueron recogidas y analizadas según normas OMS, en las cuales se observó el porcentaje de espermatozoides muertos mediante el test de eosina (TE) y el porcentaje de espermatozoides hinchados con el test hiposmótico (TH), siendo además clasificadas según su expresión ABH esté disminuida o ausente (grupo 1) o normal (grupo 2), aplicando la técnica de inhibición de la hemaglutinación y consumo del anticuerpo específico. Para el análisis estadístico se realizó la comparación de los dos grupos considerados respecto de ambos tests de viabilidad espermática, utilizando la técnica no paramétrica de Mann- Whitney para muestras independientes, por no cumplirse los supuestos para la aplicación. RESULTADOS: Se evidencian diferencias signifcativas en la variable porcentaje de muertos (TE) para los dos grupos (p< 0,001), no evidenciándose diferencia significativa en la variable I porcentaje de hinchados (TH) para ambos grupos. CONCLUSIÓN: En base a nuestros resultados y a los datos bibliográficos, concluimos que existe asociación entre expresión ABH disminuida e integridad de la membrana del espermatozoide, principalmente a nivel de la cabeza. Lo que nos lleva a pensar que los glicoesfingolipidos ABH, se localizan preferentemente en esta zona del espermatozoide, involucrada en la interacción con el ovocito (AU)


Assuntos
Masculino , Humanos , Espermatozoides , Sistema ABO de Grupos Sanguíneos , Glicoesfingolipídeos
17.
Arch. esp. urol. (Ed. impr.) ; 53(2): 101-105, mar. 2000.
Artigo em Es | IBECS | ID: ibc-1313

RESUMO

OBJETIVO: Sigue siendo controvertida la relación entre leucocitospermia e infecciones genitales. Asimismo resulta inexacto considerar el aumento de células redondas (CR) en semen como leucocitospermia. Nos propusimos determinar la posible asociación entre aumento de CR, leucocitospermia e infección bacteriana en pacientes infértiles. MÉTODO: Se analizaron 410 muestras de semen con las que se llevaron a cabo los estudio de movilidad, concentración, CR, morfología espermática, según criterios OMS. Se diferenciaron las células germinales inmaduras (CGI) por tinción con Papanicolau y los leucocitos polimorfonucleares (PMN) por el método de Nahoum-Cardozo. Para el examen directo se efectuaron estudios bacteriológicos en semen, primer chorro de orina y secreción uretral utilizando coloración de Gram Nicolle.Los cultivos se realizaron en medios enriquecidos Agar Columbia sangre, Agar chocolate y Agar Thayer Martin para gérmenes comunes. Para la identificación de Mycoplasma se sembró en medios líquidos y sólidos A7 Sheppard. La presencia de Chlamydia trachomatis se investigó por inmunofluorescencia directa en secreción uretral. RESULTADOS: El 79 por ciento de las muestras (324) resultado dispérmicas, el 9,02 por ciento (37) presentaron más de 10 CR/ campo. De estas últimas sólo el 29,7 por ciento (11) presentaban leucocitospermia. El coeficiente de correlación de Spearman con el que se midió la asociación entre concentración de CR/campo y leucocitos PMN/ml dio un valor de 0,2705 con una probabilidad asociada de 0,1046 que refleja la asociación no significativa entre las variables.En 32 muestras se realizaron estudios bacteriológicos de los cuales 13 resultaron positivos y sólo el 30,77 por ciento (4) se acompañaron con leucocitospermia. De las 19 muestras con bacteriología negativa el 15,78 por ciento (3) eran leucocitospérmicas. No hubo relación estadísticamente significativa ni entre CR aumentadas y presencia de gérmenes ( 2: 0,14965 p<0,05), ni entre PMN y gérmenes ( 2: 1,0139, p<0,05).CONCLUSIÓN: De lo expuesto surge la conveniencia de efectuar estudios bacteriológicos en el semen de pacientes infértiles independientemente de la presencia de CR en el examen directo (AU)


Assuntos
Pessoa de Meia-Idade , Adulto , Masculino , Humanos , Neutrófilos , Sêmen , Infecções Bacterianas , Infertilidade Masculina
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