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1.
Annals of African Medical Research ; 5(1): 1-5, 2022. tables
Artigo em Inglês | AIM (África) | ID: biblio-1381153

RESUMO

The long-term effects of certain clinical factors on cognition cannot be overemphasized. The morbidity of Cognitive Impairment (CI) in patients with type 2 diabetes has been found to increase when associated with some clinical factors. The main objective of this study was to determine the relationship between CI and Body Mass Index (BMI) as well as CI and Blood Pressure (BP), among type 2 diabetic patients attending the primary care unit of a tertiary hospital. It was a descriptive hospital-based crosssectional study. Ethical approval was obtained from the Ethical Review Committee of the University of Ilorin Teaching Hospital (UITH) before the commencement of the study. Data was collected from 274 adult type 2 diabetic patients attending the Family Medicine clinics of the hospital, from March through May 2017. Interviewer-administered structured and semi-structured questionnaires were used to obtain information from the respondents. The Mini-Mental State Examination (MMSE) was used to assess CI among respondents. The BMI and BP of participants were obtained following standard procedure. Data was collated and analyzed using the Statistical Package for Social Sciences version 21 (SPSS- 21). The elderly constituted a higher proportion of participants 55.4%. Respondents were mainly females (70.8%), married (78.8%), and educated (78.1%). The clinical factor that had a statistically significant association with CI was the BMI of participants with a chi-square value (χ2) of 11.139 and a p-value of 0.048. Blood pressure had no statistically significant association with CI (χ2 of 5.181 and p-value of 0.159). CI is common in our clinics with a prevalence of 27% seen in this study. BMI had a statistically significant association with CI while BP was not. Hence, maintaining a normal weight may help in controlling CI. Physicians in primary care should routinely screen type 2 diabetic patients for CI as well as control risk factors for it.


Assuntos
Prevenção Primária , Disfunção Cognitiva , Pressão Sanguínea , Índice de Massa Corporal , Diabetes Mellitus Tipo 2 , Hospitais
2.
Ibom Medical Journal ; 13(1): 28-34, 2020. ilus
Artigo em Inglês | AIM (África) | ID: biblio-1262920

RESUMO

Context: Aesthetic considerations form a major aspect of dental material selection for tooth restorations. Anterior restorative materials exclusively used in anterior teeth. With the advances made, tooth-colored restorative materials are now used in posterior teeth restorations. Objective: The aim of this study was to evaluate the techniques employed, associated problems and the attitudes of dental practitioners to the placement of posterior composites. Method: This was a questionnaire-based study conducted among sixty-eight (68) dentists practicing in public/government-owned and private hospitals. Results: The results show that 86.8% of the respondents considered the conservation of tooth substance as the most common factor influencing their choice of composite materials for posterior teeth. On their perceptions of posterior composites generally, 77.9% of the respondents agreed that posterior composites needed less destruction of sound tooth substance while 35.0% considered moisture control as the most difficult problem faced during placement of the restoration. Wooden wedges were the most popular wedges while ultraviolet curing light were the most commonly used by the respondents. Majority (82.4%) agreed that calcium hydroxide and glass ionomer cement should only be used in cases of operatively exposed dentine in deep cavities. The percentage that never used rubber dam was 47.1 while incremental curing was the most commonly used method. Sectional matrices were more commonly used by respondents while the most commonly encountered post-treatment problem was the fracture of restorations. Conclusion: While more dental practitioners are embracing the use of composites for posterior restorations, there remains the need to get them to embrace the techniques of placement to ensure more satisfactory and predictable outcomes


Assuntos
Nigéria , Reimplante Dentário
3.
F1000Res ; 7: 1155, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30345027

RESUMO

Background:Staphylococcus aureus is a significant pathogen implicated in numerous nosocomial and community-acquired infections. The Panton-Valentine leukocidin (PVL) can be associated with severe necrotizing diseases such as pneumonia, skin and soft tissue infection (SSTI).  Methods: In total, 96 S. aureus isolates were obtained from patients presenting with wounds (n=48) and soft tissue infections (SSTIs, n=48). These were characterized based on their antimicrobial susceptibility profile, the possession of virulence genes (e.g. capsular type, PVL), accessory gene regulator ( agr) type, and the staphylococcal protein A ( spa) type. The production of the PVL protein was assessed by western blotting. Results: All isolates were susceptible to methicillin. The resistance was highest to penicillin (97.9%), followed by trimethoprim/sulfamethoxazole (85.4%) and tetracycline (10.4%). The PVL gene was found in 83.3% of isolates from SSTIs and in 79.2% of isolates from wound. Of these, 53 (68%) produced PVL as assessed by western blotting. The most prevalent spa type was the t084 (78.1%, n=75) and, majority of the isolates carried  agr2 (82.3%, n=79). Conclusions: Prevalence of antibiotic resistant PVL-positive methicillin susceptible S. aureus strains has severe implications on PVL mediated infections.


Assuntos
Toxinas Bacterianas/metabolismo , Exotoxinas/metabolismo , Leucocidinas/metabolismo , Dermatopatias/metabolismo , Infecções dos Tecidos Moles/metabolismo , Infecções Estafilocócicas/metabolismo , Staphylococcus aureus/metabolismo , Estudos Transversais , Farmacorresistência Bacteriana , Humanos , Testes de Sensibilidade Microbiana , Nigéria , Dermatopatias/microbiologia , Infecções dos Tecidos Moles/microbiologia , Infecções Estafilocócicas/microbiologia , Staphylococcus aureus/efeitos dos fármacos
4.
Data Brief ; 20: 503-509, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30182042

RESUMO

The World Heal Organization (WHO) has identified malaria diagnosis as being pivotal to eradicating the disease by 2030 as stipulated in the Sustainable Development Goals (SDG). The data presented here was obtained from outpatients of a hospital in the South Western Region of Nigeria from November 2016 to May 2017. The data contains malaria incidence amongst asymptomatic and symptomatic outpatients in the period under review. Malaria incidence was obtained using two diagnostic test kits, Bioline SD (HRP-2) and ACON (HRP-2/Aldolase) alongside Microscopy as gold standard. Specificity, Sensitivity and Kappa statistic of each test device is presented in the tables herewith. Data presented here could be used alongside other data sources to assess the state of malaria diagnostics.

5.
Phys Rev E ; 97(4-1): 040801, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29758640

RESUMO

We provide a theoretical framework to analyze the properties of frontal collisions of two growing interfaces considering different short-range interactions between them. Due to their roughness, the collision events spread in time and form rough domain boundaries, which defines collision interfaces in time and space. We show that statistical properties of such interfaces depend on the kinetics of the growing interfaces before collision, but are independent of the details of their interaction and of their fluctuations during the collision. Those properties exhibit dynamic scaling with exponents related to the growth kinetics, but their distributions may be nonuniversal. Our results are supported by simulations of lattice models with irreversible dynamics and local interactions. Relations to first passage processes are discussed and a possible application to grain-boundary formation in two-dimensional materials is suggested.

6.
J Am Soc Hypertens ; 12(4): 268-274, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29452900

RESUMO

Literature abounds on prevalence of hypertension in Nigeria and urban areas of Oyo state but none in Oke-Ogun geopolitical zone, which constitutes 10 local governments of the 33 in Oyo state, despite the fact that they have high genetic and environmental predisposition to developing high blood pressure. The purpose of the study was to determine the prevalence of high blood pressure and associated risk factors among indigenes of Oke-ogun, Oyo state. A total of 10,000 respondents were recruited using proportionate sampling techniques. Hypertension was defined according to Joint National Committee-8 criteria. The fasting plasma glucose of the respondents were classified as normal (≤6 mmol/L), prediabetes (6.1-6.9 mmol/L), and diabetes (≥7 mmol/L). Body mass index was calculated as weight (kg)/height (m2) and classified as malnutrition/underweight (<16-18.49), normal (18.5-24.9), overweight (25-29.9), and obese (30-≥40). Data were analyzed using descriptive statistics, Chi-square and binary logistic regression tests at P < .05. The mean systolic and diastolic blood pressure was 138 ± 27.81 and 86.13 ± 14.39 respectively. The overall prevalence of hypertension was 38.5%. 64.1% were diabetics. 63.4% had no formal education. Majority (82.95%) earned less than N18,000 ($59) per month. 43.3% had family history of hypertension. There is high prevalence of hypertension among the people of Oke-ogun, in Oyo state. Their low socioeconomic status, low educational background, malnutrition, and genetic predisposition were identified risk factors.

7.
Rev Med Liege ; 72(9): 406-409, 2017 Sep.
Artigo em Francês | MEDLINE | ID: mdl-28892316

RESUMO

Measles is a highly contagious viral disease. Transmission occurs from person to person through direct contact or by aerosolization of pharyngeal secretions. In the area of Verviers (Belgium), we were confronted to a group of patients with measles, a public health event with local concentration. In our hospital institution, our case index dates back to the beginning of February 2017 and the follow-up of the cases indicates an upward trajectory. Sorting measures and isolations of potential patients, extensive screening and vaccinations were undertaken and coordinated from an internal management unit. Numerous contacts have been made with the competent authorities. The limitation of a measles epidemic remains a public health problem that is difficult to manage optimally, and a limited number of nosocomial cases and infections of hospital staff could not be avoided.


La rougeole est une maladie virale extrêmement contagieuse. La transmission se fait de personne à personne par contact direct ou par aérosolisation des sécrétions pharyngées. En région verviétoise, nous avons été confrontés à un ensemble de patients atteints de rougeole, événement de santé publique à concentration locale. Au sein de notre institution hospitalière, notre cas index remonte à début février 2017 et le suivi des cas fait état d'une trajectoire ascendante. Des mesures de tri et d'isolement des patients potentiels, des dépistages étendus et des vaccinations ont été entrepris et coordonnés à partir d'une cellule de gestion interne. De multiples contacts ont été réalisés avec les autorités compétentes. La limitation d'une épidémie de rougeole reste un problème de santé publique difficile à gérer de manière optimale et un nombre limité de cas nosocomiaux et de contaminations du personnel hospitalier n'a pu être évité.


Assuntos
Serviço Hospitalar de Emergência , Controle de Infecções , Sarampo/epidemiologia , Sarampo/terapia , Bélgica/epidemiologia , Infecção Hospitalar/prevenção & controle , Serviço Hospitalar de Emergência/organização & administração , Serviço Hospitalar de Emergência/normas , Epidemias/prevenção & controle , Humanos , Controle de Infecções/métodos , Controle de Infecções/organização & administração , Controle de Infecções/normas , Admissão do Paciente/normas , Triagem/métodos , Triagem/organização & administração , Triagem/normas
8.
BMC Pulm Med ; 17(1): 48, 2017 03 06.
Artigo em Inglês | MEDLINE | ID: mdl-28264672

RESUMO

BACKGROUND: The increasing importance of pulmonary function testing in diagnosing and managing lung diseases and assessing improvement has necessitated the need for locally derived reference equations from a sample of the general Nigerian population. METHODS: It was a cross sectional study in which we used linear regression models to obtain equations for reference values and lower limits of normal for spirometric indices in adult Nigerians from a sample of the general population aged 18-65 years (males) and 18-63 years (females). RESULTS: Seven hundred and twenty participants made up of 358 males and 362 females who satisfactorily completed the spirometric measurements using the ATS/ERS reproducibility and acceptability criteria were included in the analysis. The most important predictive variables were height and age. The values of the spirometic indices increase with increasing stature but decrease with increasing age in both sexes. The sex difference in all the indices is also apparent as all the indices, except FEV1/FVC, are higher in men than in women. Our values are higher than values obtained from previous studies in Nigeria (except FEV1/FVC) but the differences were not statistically significant. This suggests that although the values are increasing, the increase is yet to be significantly different from values obtained using the past equations. The implication of this is that there is need for periodic study to derive new equations so as to recognise when there is significant difference. There was no significant difference between values from our equations and those obtained from study among Ethiopians. Compared to report from Iran, our FVC and FEV1values (in males and females) as well as PEFR (in females) are significantly lower. Our values are also lower than values from Poland. We also observed disparities between our values and those of Afro Americans from the GLI study. CONCLUSIONS: Our findings show that it is important to always interpret ventilatory function tests in any individual by comparing it with reference values obtained from a well-defined population of healthy subjects of the same ethnic origin in similar geographic location.


Assuntos
Pulmão/fisiologia , Espirometria , Adolescente , Adulto , Idoso , Estudos Transversais , Feminino , Volume Expiratório Forçado , Voluntários Saudáveis , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Nigéria , Valores de Referência , Reprodutibilidade dos Testes , Capacidade Vital , Adulto Jovem
9.
Rev Epidemiol Sante Publique ; 65(3): 181-188, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28185756

RESUMO

BACKGROUND: We aimed to describe incidence and mortality from colorectal cancer, and temporal trends between 1982 and 2011 in Martinique (French West-Indies). METHODS: This was a descriptive, longitudinal, observational study based on data from the Martinique cancer registry. The study included all incident cases of colorectal cancer between 1982 and 2011. We recorded sociodemographic data and clinical variables (histology, site according to the WHO classification). Cancer cases were recorded in strict conformity with the international standards. Annual rate of change was calculated, direct standardisation was used for incidence and mortality age standardised rates (ASR). The comparative incidence figure and comparative mortality figure (95% confidence intervals) were calculated. RESULTS: In total, 2530 patients were included in our study; 1243 died. In the period 2007-2011, a considerable increase in incidence was observed, making colorectal cancer the second leading cause of cancer deaths in both sexes (8.9% and 10.5%). In men, ASR for incidence increased from 9.6/100,000 person-years in the period 1982-1986 to 27.2/100,000 person-years in the period 2007-2011, with a notable acceleration of the increase. In women, ASR increased from 8.4 to 19.8/100,000 person-years over the same periods. For the latest period 2007-2011, mortality rates were 9.9 and 7.6/100,000 person-years for men and for women respectively. Regardless of the sex, there was a strong increase in the incidence of right colon cancer, which became the most common colorectal site in women in Martinique. CONCLUSION: Our findings confirm the increase in the incidence of colorectal cancer that started in the 2000s. Trends observed reflect a salient epidemiological transition of the Caribbean.


Assuntos
Neoplasias Colorretais/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Região do Caribe , Neoplasias Colorretais/mortalidade , Feminino , Humanos , Incidência , Estudos Longitudinais , Masculino , Martinica/epidemiologia , Pessoa de Meia-Idade , Mortalidade/tendências , Sistema de Registros , Adulto Jovem
10.
Health sci. dis ; 17(2): 55-58, 2016. ilus
Artigo em Francês | AIM (África) | ID: biblio-1262757

RESUMO

INTRODUCTION. Les pseudotumeurs et tumeurs benignes des machoires regroupent une diversite histologique de lesions. Leur distribution geographique est heterogene. L'objectif de cette etude etait de ressortir la distribution des types histologiques ainsi que leurs frequences relatives dans deux formations hospitalieres a Douala (Cameroun). MeTHODOLOGIE. Cette etude descriptive retrospective et prospective a ete conduite dans les services d'anatomie pathologique des Hopitaux Laquintinie et General de Douala; sur une periode de 12;3 ans allant de janvier 2003 a avril 2015. Etait inclus tout patient chez qui le diagnostic de pseudotumeur ou tumeur benigne des machoires etait pose a l'examen d'anatomie pathologique et nous avons retenu 52 cas. ReSULTATS. Sur ce total de 52 cas dont 30 femmes et 22 hommes; l'age moyen des patients etait de 31;1 ans; avec un pic de frequence entre 20 et 40 ans. Les pseudotumeurs et tumeurs odontogenes ont represente 63;46 %; et etaient dominees par l'ameloblastome (78;79%) ; ses variantes folliculaire (50%) et plexiforme (26;92%) etaient les plus frequentes. Les pseudotumeurs et tumeurs non odontogenes (36;54%) etaient dominees par les lesions fibro-osseuses avec 52;63%. CONCLUSION. Les pseudotumeurs et tumeurs benignes des machoires sont des pathologies rencontrees dans notre milieu. L'ameloblastome domine par ses variantes folliculaire et plexiforme ainsi que la dysplasie fibreuse sont les types histologiques predominants


Assuntos
Camarões , Histologia , Neoplasias Maxilomandibulares , Mandíbula
11.
PLoS One ; 10(9): e0137531, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26348037

RESUMO

Few reports from Africa suggest that resistance pattern, virulence factors and genotypes differ between Staphylococcus aureus from nasal carriage and clinical infection. We therefore compared antimicrobial resistance, selected virulence factors and genotypes of S. aureus from nasal carriage and clinical infection in Southwest Nigeria. Non-duplicate S. aureus isolates were obtained from infection (n = 217) and asymptomatic carriers (n = 73) during a cross sectional study in Lagos and Ogun States, Nigeria from 2010-2011. Susceptibility testing was performed using Vitek automated systems. Selected virulence factors were detected by PCR. The population structure was assessed using spa typing. The spa clonal complexes (spa-CC) were deduced using the Based Upon Repeat Pattern algorithm (BURP). Resistance was higher for aminoglycosides in clinical isolates while resistances to quinolones and tetracycline were more prevalent in carrier isolates. The Panton-Valentine leukocidin (PVL) was more frequently detected in isolates from infection compared to carriage (80.2 vs 53.4%; p<0.001, chi2-test). Seven methicillin resistant S. aureus isolates were associated with spa types t002, t008, t064, t194, t8439, t8440 and t8441. The predominant spa types among the methicillin-susceptible S. aureus isolates were t084 (65.5%), t2304 (4.4%) and t8435 (4.1%). spa-CC 084 was predominant among isolates from infection (80.3%, n = 167) and was significantly associated with PVL (OR = 7.1, 95%CI: 3.9-13.2, p<0.001, chi2-test). In conclusion, PVL positive isolates were more frequently detected among isolates from infection compared to carriage and are associated with spa-CC 084.


Assuntos
Toxinas Bacterianas/genética , Exotoxinas/genética , Leucocidinas/genética , Resistência a Meticilina/genética , Staphylococcus aureus Resistente à Meticilina/genética , Infecções Estafilocócicas/genética , Toxinas Bacterianas/isolamento & purificação , Exotoxinas/isolamento & purificação , Humanos , Leucocidinas/isolamento & purificação , Meticilina/uso terapêutico , Staphylococcus aureus Resistente à Meticilina/efeitos dos fármacos , Staphylococcus aureus Resistente à Meticilina/patogenicidade , Testes de Sensibilidade Microbiana , Nigéria/epidemiologia , Infecções Estafilocócicas/epidemiologia , Infecções Estafilocócicas/microbiologia
12.
Rev Med Liege ; 70(7-8): 371-3, 2015.
Artigo em Francês | MEDLINE | ID: mdl-26376563

RESUMO

Although well described in the literature, negative pressure pulmonary oedema is an uncommon and often unrecognized pathology. It dramatically develops in healthy subjects, following a sudden obstruction of the upper airway. The strongly negative intra thoracic pressures developed during the inspiratory efforts is then responsible for the formation of pulmonary oedema secondary to increased pulmonary blood volume and hydrostatic pressure. In rare cases, alveolar hemorrhage is observed due to rupture of the alveolar-capillary barrier. This condition is illustrated by the case of a 6 year old child who presented an obstruction of the upper airway in the aftermath of inhaling an inflatable balloon. The evolution was rapidly favorable.


Assuntos
Obstrução das Vias Respiratórias/complicações , Hemorragia/etiologia , Pneumopatias/etiologia , Edema Pulmonar/etiologia , Obstrução das Vias Respiratórias/diagnóstico por imagem , Obstrução das Vias Respiratórias/patologia , Criança , Hemorragia/diagnóstico por imagem , Hemorragia/patologia , Humanos , Pressão Hidrostática , Pneumopatias/diagnóstico por imagem , Pneumopatias/patologia , Masculino , Edema Pulmonar/diagnóstico por imagem , Edema Pulmonar/patologia , Radiografia Torácica
13.
Artigo em Inglês | MEDLINE | ID: mdl-26274185

RESUMO

We study the behavior of a nanoparticle under electromigration on a nanopatterned surface. We show that electromigration allows one to control the wetting transitions of the nanoparticle. Suitable surface electromigration conditions to observe these transitions can be achieved with electric currents larger than 1 µA. Using kinetic Monte Carlo simulations and analytical modeling, we determine the phase diagram of the wetting states, showing how wetting multistability is affected by electromigration. In addition, we show that the dynamics of the transitions is controlled by surface diffusion in our simulations, and we provide a quantitative expression for the transition time.

14.
NMR Biomed ; 28(1): 89-100, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25382459

RESUMO

The purpose of this work was (1) to develop a magnetic resonance elastography (MRE) system for imaging of the ex vivo human prostate and (2) to assess the diagnostic power of mono-frequency and multi-frequency MRE and diffusion weighted imaging (DWI) alone and combined as correlated with histopathology in a patient study. An electromagnetic driver was designed specifically for MRE studies in small-bore MR scanners. Ex vivo prostate specimens (post-fixation) of 14 patients who underwent radical prostatectomy were imaged with MRE at 7 T (nine cases had DWI). In six patients, the MRE examination was performed at three frequencies (600, 800, 1000 Hz) to extract the power-law exponent Gamma. The images were registered to wholemount pathology slides marked with the Gleason score. The areas under the receiver-operator-characteristic curves (AUC) were calculated. The methods were validated in a phantom study and it was demonstrated that (i) the driver does not interfere with the acquisition process and (ii) the driver can generate amplitudes greater than 100 µm for frequencies less than 1 kHz. In the quantitative study, cancerous tissue with Gleason score at least 3 + 3 was distinguished from normal tissue in the peripheral zone (PZ) with an average AUC of 0.75 (Gd ), 0.75 (Gl ), 0.70 (Gamma-Gd ), 0.68 (apparent diffusion coefficient, ADC), and 0.82 (Gd + Gl + ADC). The differentiation between PZ and central gland was modest for Gd (p < 0.07), Gl (p < 0.06) but not significant for Gamma (p < 0.2). A correlation of 0.4 kPa/h was found between the fixation time of the prostate specimen and the stiffness of the tissue, which could affect the diagnostic power results. DWI and MRE may provide complementary information; in fact MRE performed better than ADC in distinguishing normal from cancerous tissue in some cases. Multi-frequency (Gamma) analysis did not appear to improve the results. However, in light of the effect of tissue fixation, the clinical implication of our results may be inconclusive and more experiments are needed.


Assuntos
Imagem de Difusão por Ressonância Magnética/métodos , Técnicas de Imagem por Elasticidade/métodos , Neoplasias da Próstata/diagnóstico , Neoplasias da Próstata/patologia , Idoso , Área Sob a Curva , Biópsia , Módulo de Elasticidade , Humanos , Masculino , Pessoa de Meia-Idade , Imagens de Fantasmas , Próstata/patologia , Curva ROC , Transdutores
15.
NMR Biomed ; 28(1): 124-39, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25395244

RESUMO

The purpose of this work was to assess trans-perineal prostate magnetic resonance elastography (MRE) for (1) repeatability in phantoms/volunteers and (2) diagnostic power as correlated with histopathology in prostate cancer patients. The three-dimensional (3D) displacement field was obtained using a fractionally encoded gradient echo sequence using a custom-made transducer. The repeatability of the method was assessed based on three repeat studies and by changing the driving frequency by 3% in studies on a phantom and six healthy volunteers. Subsequently, 11 patients were examined with MRE prior to radical prostatectomy. The areas under the receiver operating characteristic curves were calculated using a windowed voxel-to-voxel approach by comparing the 2D registered slides, masked with the Gleason score. For the repeatability study, the average intraclass correlation coefficient for elasticity images was 99% for repeat phantom studies, 98% for ±6 Hz phantom studies, 95% for volunteer repeat studies with 2 min acquisition time, 82% for ±2 Hz volunteer studies with 2 min acquisition time and 73% for repeat volunteer studies with 8 min acquisition time. For the patient study, the average elasticity was 8.2 ± 1.7 kPa in the prostate capsule, 7.5 ± 1.9 kPa in the peripheral zone (PZ), 9.7 ± 3.0 kPa in the central gland (CG) and 9.0 ± 3.4 kPa in the transition zone. In the patient study, cancerous tissue with Gleason score at least 3 + 3 was significantly (p < 0.05) different from normal tissue in 10 out of 11 cases with tumors in the PZ, and 6 out of 9 cases with tumors in the CG. However, the overall case-averaged area under the curve was 0.72 in the PZ and 0.67 in the CG. Cancerous tissue was not always stiffer than normal tissue. The inversion algorithm was sensitive to (i) vibration amplitude and displacement nodes and (ii) misalignment of the 3D wave field due to subject movement.


Assuntos
Técnicas de Imagem por Elasticidade/métodos , Imageamento por Ressonância Magnética/métodos , Neoplasias da Próstata/diagnóstico , Neoplasias da Próstata/patologia , Adulto , Idoso , Área Sob a Curva , Módulo de Elasticidade , Humanos , Masculino , Pessoa de Meia-Idade , Imagens de Fantasmas , Curva ROC , Reprodutibilidade dos Testes
17.
Niger Postgrad Med J ; 21(1): 57-60, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24887253

RESUMO

AIMS AND OBJECTIVES: The aim was to identify any relationship between obesity and peripheral arterial disease (PAD) in diabetic subjects. SUBJECTS AND METHODS: Male and female diabetic subjects aged 50-89 years. Body mass index (BMI) was used to estimate total body weight and the waist-to- hip ratio (WHR) as well as waist circumference (WC) were used for abdominal fat distribution estimation. Peripheral arterial disease was defined by an ankle brachial index <0.9. RESULTS: Peripheral arterial disease (PAD) was observed in 52.5% of the subjects. BMI, WHR and WC did not correlate with PAD. CONCLUSION: None of the parameters (i.e BMI, WHR and WC) used to assess the relationship between obesity and PAD was found to correlate with PAD.


Assuntos
Diabetes Mellitus/epidemiologia , Obesidade/epidemiologia , Doença Arterial Periférica/epidemiologia , Idoso , Idoso de 80 Anos ou mais , Índice de Massa Corporal , Angiopatias Diabéticas/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Nigéria/epidemiologia , Obesidade Abdominal/epidemiologia , Circunferência da Cintura , Relação Cintura-Quadril
18.
Phys Rev Lett ; 112(14): 146102, 2014 Apr 11.
Artigo em Inglês | MEDLINE | ID: mdl-24765991

RESUMO

Solids and liquids are both known to exhibit Cassie-Baxter states, where a drop or a solid nanoparticle is maintained on top of pillars due to wetting forces. We point out that due to elastic strain, solid nanocrystals exhibit a behavior different from that of liquids. First, the equilibrium Cassie-Baxter state on a single pillar exhibits a spontaneous symmetry breaking due to elastic effects. The second consequence of elasticity is the existence of stable partially impaled states, resulting from a compromise between wetting forces which favor impalement and elastic strain which resists impalement. Based on kinetic Monte Carlo simulations which include elastic strain, we discuss these effects and we propose a global phase diagram for the stability of nanocrystals on nanopillars.

19.
Malar J ; 13: 63, 2014 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-24555525

RESUMO

BACKGROUND: The resistance of human malaria parasites to anti-malarial compounds has become considerable concern, particularly in view of the shortage of novel classes of anti-malarial drugs. One way to prevent resistance is by using new compounds that are not based on existing synthetic antimicrobial agents. RESULTS: Sensitivity of 100 Plasmodium falciparum isolates to chloroquine, quinine, amodiaquine, mefloquine, sulphadoxine/pyrimethamine, artemisinin, Momordica charantia ('Ejirin') Diospyros monbuttensis ('Egun eja') and Morinda lucida ('Oruwo') was determined using the in vitro microtest (Mark III) technique to determine the IC50 of the drugs. All the isolates tested were sensitive to quinine, mefloquine and artesunate. Fifty-one percent of the isolates were resistant to chloroquine, 13% to amodiaquine and 5% to sulphadoxine/pyrimethamine. Highest resistance to chloroquine (68.9%) was recorded among isolates from Yewa zone while highest resistance to amodiaquine (30%) was observed in Ijebu zone. Highest resistance to sulphadoxine/pyrimethamine was recorded in Yewa and Egba zones, respectively. A positive correlation was observed between the responses to artemisinin and mefloquine (P<0.05), artemisinin and quinine (P<0.05) and quinine and mefloquine (P<0.05). A negative correlation was observed between the responses to chloroquine and mefloquine (P>0.05). Highest anti-plasmodial activity was obtained with the ethanolic extract of D. monbuttensis (IC50 = 3.2 nM) while the lowest was obtained from M. lucida (IC50 = 25 nM). CONCLUSIONS: Natural products isolated from plants used in traditional medicine, which have potent anti-plasmodial action in vitro, represent potential sources of new anti-malarial drugs.


Assuntos
Antimaláricos/farmacologia , Diospyros/química , Momordica charantia/química , Morinda/química , Extratos Vegetais/farmacologia , Plasmodium falciparum/efeitos dos fármacos , Adolescente , Adulto , Antimaláricos/administração & dosagem , Feminino , Humanos , Masculino , Testes de Sensibilidade Microbiana , Nigéria , Extratos Vegetais/administração & dosagem , Adulto Jovem
20.
Int J MCH AIDS ; 2(2): 174-81, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-27621970

RESUMO

BACKGROUND: People Living with HIV/AIDS (PLWHA) continue to face persistent and deep rooted social barriers. Incidentally, studies in social determinants of depression are very limited, necessitating this study, which examined social determinants of depression and the impact of these determinants on depression. METHODS: This was a hospital based, cross sectional descriptive study of three hundred adult HIV/AIDS patients, attending the HIV clinic of Kwara State Specialist Hospital, Sobi, Ilorin, Nigeria. Depressive symptoms were measured by the PHQ-9 rating scale. Three variables of social determinants of depression: socio-economic status (years of school and self-reported economic status of family), social cohesion, and negative life events were examined. RESULTS: The self-reported economic status of the family varied from good 35(11.7%), average 162(54%), and poor among 103(34.3%) of the respondents. Social cohesion was low in 199(66.3%), fair in 65(21.7%) and high among 36(12%) of the respondents. There was significant association between social cohesion, negative life events, and depression. CONCLUSION AND GLOBAL HEALTH IMPLICATIONS: Income was the most significant socio-economic determinant. Majority had very low social cohesion and more negative life events, while those with below average years of schooling were more depressed. These are statistically significant. Social determinants of depression should be given a lot of emphasis, when addressing the issue of depression, if we are to meaningfully tackle this increasing scourge in our society.

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