Evaluation of Testicular Function and Structural Changes of Wistar Rats Following Antiretroviral Exposure: Protective Role of Cyperus Esculentus.

Long-term antiretroviral drug toxicity may exacerbate the impact of HAART-Cyperus esculentus (C. esculentus) interactions on testicular function in HIV-infected individuals. This study examined the ability of C. esculentus plants to treat testicular dysfunction, which is thought to be a probable side effect of antiretroviral toxicity. Adult Wistar male rats weighing 90-110 g were divided into six groups and administered the prescribed treatments. In addition to testicular histology and stereological parameters, testosterone levels, follicle-stimulating hormone levels, antioxidant markers, malondialdehyde (MDA), superoxide dismutase (SOD), and glutathione levels were also evaluated. The adverse consequences of highly active antiretroviral therapy (HAART) include considerable loss of germ cells, enlargement of the tubular lumen, widening of interstitial gaps, and severe hypocellularity. Compared to the other treatment groups, MDA levels dramatically increased, whereas GSH and antioxidant enzyme (SOD) levels significantly decreased. Testicular architecture was largely conserved after treatment with C. esculentus, with a notable increase in the cellular densities of germinal and interstitial cells and a notable decrease in the tubular lumen. Vacuolation, architectural malformations, and hypoplastic changes were reduced. Significant improvements were also observed in C. esculentus in terms of elevated antioxidant SOD and GSH levels and decreased MDA levels. C. esculentus reduced architectural distortions and testicular dysfunction caused by HAART, and improved testicular morphology. Further exploration of these pathways is required.

Assessment of preventive oral health knowledge and practices among rural and urban mothers in Lagos state.

AIMS AND OBJECTIVES: To evaluate students' performance and its predictors in the preclinical examinations at the College of Health Sciences, Ladoke Akintola University of Technology Ogbomoso Nigeria. MATERIALS AND METHODS: A cross section of students' records admitted into medical programme in 1999/2000 sessions was studied. RESULTS: Younger students performed consistently better than the older ones in all the three subjects taken at the MBBS1. It was also noticed that the male students performed better, a statistically significant mean difference in score was observed in Biochemistry P>0.05. Students with better Ordinary level aggregate grade of (5-15) in the five core subjects at SSCE, consistently had better results in all the subjects taken at MBBS1 examination compared to their counter-part with aggregate SSCE grade of (16-30). Students that were admitted through JAMB performed better in all the three subjects than those that were admitted through pre-degree programme and the transferred students. However, the mean difference was statistically significant P<0.05 in Biochemistry only. CONCLUSION: Better performance at MBBS1 was found in younger age group, those with aggregate grade of (5-15) in SSCE and those admitted through JAMB. Ordinary level requirement irrespective of the mode of admission should not be compromised. Schools that admit students through pre-degree, transfer or direct entry will have to be more conscious of the quality of students they admit and also operate such system with utmost transparency and with a principle of promoting good academic standard.

Predictors of students'performance in the pre-clinical MBBS programme in a Nigerian University.

AIMS AND OBJECTIVES: To evaluate students' performance and its predictors in the preclinical examinations at the College of Health Sciences, Ladoke Akintola University of Technology Ogbomoso, Nigeria. MATERIALS AND METHODS: A cross section of students' records admitted into medical programme in 1999/2000 sessions was studied. RESULTS: Younger students performed consistently better than the older ones in all the three subjects taken at the MBBS1. It was also noticed that the male students performed better, a statistically significant mean difference in score was observed in Biochemistry P<0.05. Students with better Ordinary level aggregate grade of (5-15) in the five core subjects at SSCE, consistently had better results in all the subjects taken at MBBS1 examination compared to their counter-part with aggregate SSCE grade of (16-30). Students that were admitted through JAMB performed better in all the three subjects than those that were admitted through pre-degree programme and the transferred students. However, the mean difference was statistically significant P<0.05 in Biochemistry only. CONCLUSION: Better performance at MBBS1 was found in younger age group, those with aggregate grade of (5-15) in SSCE and those admitted through JAMB ordinary level requirement irrespective of the mode of admission should not be compromised. Schools that admit students through pre-degree, transfer or direct entry will have to be more conscious of the quality of students they admit and also operate such system with utmost transparency and with also operate such system with utmost transparency and with a principle of promoting good academic standard.

Onion (Allium cepa) extract prevents cadmium induced renal dysfunction.

Cadmium (Cd), a heavy metal, is known for its adverse effects on the body. In this study, the lowering effect of Cd on renal clearance (RC) was investigated, and Allium cepa extract (AcE) (an antioxidant) was pre-administered orally to prevent Cd's adverse effects. Seventy-two Wistar rats, grouped into three (n = 24), were used for this study. While Group C was given 1.0 ml of AcE daily (orally), Group A and Group B were given distilled water. AcE administration was done for eight weeks. Afterwards B and C were then given 1.5 ml/kg BW of 0.3 mg/L 3CdSO(4).8H(2)O intraperitoneally for three consecutive days. The results obtained showed that Cd causes significant reduction in the 24 hour urine volume (from 3.017 +/- 0.125 to 2.433 +/- 0.118 ml), RC (from 3.258 +/- 0.114 to 1.357 +/- 0.104 ml/h for creatinine; and from 0.350 +/- 0.057 to 0.185 +/- 0.055 ml/h for urea), plasma and tissue SOD and CAT activity (form 1.644 +/- 0.036 to 1.307 +/- 0.056 u/g protein for plasma SOD; 0.391 +/- 0.029 to 0.2692 +/- 0.031 u/protein for plasma CAT; 1.695 +/- 0.034 to 1.327 +/- 0.049 u/g protein for tissues SOD; and from 0.350 +/- 0.027 to 0.273 +/- 0.043 u for tissue CAT), and significant MDA increased in plasma (from 1496.79 +/- 1.321 to 1679.48 +/- 143.29 mug/g protein) and tissue (from 1265.22 +/- 2.285 to 1669.87 +/- 14.61 mug/dL). AcE, however, prevents these Cd's adverse effects. This findings lead to the conclusion Cd exposure causes renal dysfunction, but oral administration of onion could prevent it.

A comparative study of the ileum in rat (Rattus norvegicus), Bat (Eidolon helvum) and Pangolin (Manis tricuspis) as investigated using histological method / Estudio comparativo del íleon en rata (Rattus norvegicus), murciélago (Eidolon helvum) y pangolín (Manis tricuspis) utilizando como investigación el método histológico

The histological and morphometric differences in some parts of the gastrointestinal tracts of rat, bat and pangolin have been well established. This investigation aims at comparatively elucidating any adaptational changes the ileum of the three mammals must have adopted to meet its dietary requirements and also cope with their morphological differences. The investigation was carried out using ten rats, ten bats and ten pangolins of both sexes. The animals were slightly anaesthetized under chloroform inhalation. The intestines were harvested and the ileum excised and fixed in 10 percent formol saline. The tissues were processed for light microscopic study. The following stains were employed: Haematoxylin and eosin (H & E), Van Gieson and Verhoeff's haematoxylin elastic tissue stain. Stained slides were also analysed morphometrically. The results revealed microstructural modifications which characterized the mucosa as well as the pattern of distribution of the conjuntive tissue fibers in the ileum of the three mammals. These modifications are means of successfully coping with their respective diets and morphological differences.

Las diferencias histológicas y morfométricas en algunas partes del tubo digestivo de ratas, murciélagos y pangolines han sido bien establecidos. Esta investigación tiene por objeto aclarar comparativamente cualquier cambio de adaptación del íleon de los tres mamíferos que hayan adoptado para satisfacer sus necesidades dietéticas y también hacer frente a sus diferencias morfológicas. La investigación se llevó a cabo usando 10 ratas, 10 murciélagos y 10 pangolines, de ambos sexos. Los animales fueron ligeramente anestesiados bajo inhalación de cloroformo. Los intestinos fueron expuestos, el íleon extirpado y fijado en formol salino al 10 por ciento. Los tejidos fueron procesados para su estudio por microscopía de luz. Los siguientes tinciones fueron empleadas: Hematoxilina y eosina (H & E), Van Gieson y tinción de hematoxilina para tejidos elásticos de Verhoeff. Los cortes teñidos también se analizaron morfométricamente. Los resultados revelaron modificaciones microestructurales características de la mucosa, así como el patrón de distribución de las fibras de tejido conjuntivo en el íleon de los tres mamíferos. Estas modificaciones son el medio para entender sus diferencias en la dieta y morfología respectivamente.