Search for Articles:
Journal:
Subject:

Search Filter

Years
Between: -
Article Types
Search Results (2775)
Order
page
文章
Adegoke, Anthony Ayodeji* and Komolafe, Amos Omoniyi
Abstract: A study to investigate the susceptibility pattern of Staphylococcus aureus to conventional antibiotics being frequently prescribed in Ile-Ife, South Western Nigeria was carried out. One hundred and seven samples from various clinical samples were collected from Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Nigeria. The isolates of S. aureus were characterized and identified using standard microbiological techniques. The isolates harvested were subjected to in-vitro antibiotic susceptibility tests using the disc diffusion method and beta-lactamase test was carried out using starch paper hydrolysis. One hundred and five isolates of S. aureus were harvested. The in vitro susceptibility of the bacterial isolates to antibiotics indicated 75.3-92.5% sensitivity to cefotaxime, ciprofloxacin and pefloxacin. However, they were 65% producers of beta lactamase while 45-72% resistant to penicillin, ampicillin, tetracycline and cotrimoxazole. Out of the 56 isolates tested with methicillin, 28 (50%) were resistant while 18 (32.1%) were sensitive. It was observed 70% of the tested isolates were beta lactamase producers. Multiple resistance was observed to 10 frequently prescribed antibiotics in the area. This suggests possible abuse of these drugs, poor hospital attendance and the need for better enlightenment campaign against the use of drug without prescription.[...] Read More.
Keywords: Staphylococcus aureus, ciprofloxacin, multiple antibiotic resistant index, beta lactamase test.
Full text
Views:1490
Download:1307
文章
G. O. Ajayi, T. T. Adeniyi* and D. O. Babayemi
Abstract: The hepatoprotective and some haematological effects of Allium sativum (Garlic) and vitamin C were studied on experimental rats that were exposed to lead (Pb) for one week. Twenty – four female Wistar rats were divided into four groups of six rats per group. Rats in group A were kept as the control. Rats in groups B, C and D were exposed to 100 µmol/kg body weight of lead acetate intraperitoneally for seven days. Garlic diet (200 g minced garlic/kg diet) and vitamin C (500 mg/kg body weight) were given to rats in groups C and D for additional seven days respectively. Garlic and vitamin C produced significant reduction at p < 0.05 in the levels of ALT, ALP and PCV while the level of AST increases significantly at p < 0.05. The level of Hb increases significantly at p < 0.05 in rats treated with garlic and reduces significantly at p < 0.05 in rats treated with Vitamin C. This study, therefore suggests that garlic and vitamin C have some hepatoprotective and haematological effects.[...] Read More.
Keywords: Hepatoprotective, haematological, Allium sativum, vitamin C, Lead (Pb).
Full text
Views:1322
Download:1388
文章
Full Length Research paper
Abstract: Previously, we investigated the induction effect of LRP16 expression by estrogen (E2) and established feed-forward mechanism that activated ERa transactivation in estrogen-dependent epithelial cancer cells. LRP16 is required for ERa signaling transduction by functioning as an ERa coactivator. In this study, we demonstrated that LRP16 expression was up-regulated in E2-responsive BG-1 ovarian cancer cells, but was down-regulated in estrogen-resistant SKOV3 ovarian cancer cells. Pure estrogen antagonist ICI 182 780 did not affect LRP16 expression in SKOV3 cell. The unliganded ERa up-regulated LRP16 expression and enhanced LRP16 promoter activity in SKOV3 cells; however, this induction was blocked by estrogen stimulation. Results from chromatin immunoprecipitation experiment revealed a strong recruitment of the unliganded ERa at LRP16 promoter in the absence of estrogen; however, ERa was largely released from the DNA upon E2 stimulation. Although LRP16 did not significantly change the proliferation rate of SKOV3 cells, it seemed to slightly modulate the growth responsiveness of cells to E2. Knockdown of LRP16 by RNA interference in SKOV3 cells markedly attenuated estrogen response element-dependent ERa reporter gene activity and E2-induced c-myc expression. Our study suggests a novel mechanism of estrogen resistance of ovarian cancer by which estrogen-repressed signaling pathway antagonizes estrogen-activated signaling transduction.[...] Read More.
Keywords: LRP16, estrogen, estrogen receptor a, SKOV3.
Full text
Views:1248
Download:1346
文章
K´et´evi A. Assamagan*, Somi´ealo Azote*, Simon H. Connell, Cyrille E. Haliya, Toivo S. Mabote, Kondwani C.C. Mwale, Ebode F. Onyie, George Zimba
Abstract: COVID-19 is a new pandemic disease that is affecting almost every country with a negative impact on social life and economic activities. The number of infected and deceased patients continues to increase globally. Mathematical models can help in developing better strategies to contain a pandemic. Considering multiple measures taken by African governments and challenging socio-economic factors, simple models cannot fit the data. We studied the dynamical evolution of COVID-19 in selected African countries. We estimated a time-dependent reproduction number, R0 for each country studied to offer further insights into the spread of COVID-19 in Africa. We found that at the beginning the pandemic, R0 ≤ 4 for all the countries studied; three months later, R0 ∼ 1 with fluctuations in-between. Keywords:  COVID-19, SIDARTHE, SARS-CoV-2.[...] Read More.
Keywords:   COVID-19, SIDARTHE, SARS-CoV-2.
Full text
Views:2251
Download:2399
文章
Nabil Abdel-Hamid
Abstract: Hepatocellular carcinoma (HCC) became a prevalent disease in many populations worldwide. It initiates many economic problems in management modalities and leads to increasing mortality rates. Many trials are made all over the world to implement specific early markers for detection and prediction of the disease, hoping to set a more precise strategy for liver cancer prevention. Unfortunately, many economic, cultural and disciplinary levels contribute to confounding preventive strategies. Many risk factors seem to predispose HCC, which either present individually or collectively depending on the environmental situations. Previous articles discussed many risk factors participating in hepatocellular carcinogenesis, although most of them did not handle collectively the current up to date causes. In this article, the pathogenesis and most of risk factors of HCC are briefly discussed. Most of the intermediating steps of HCC pass through molecular and transcriptional events leading eventually to hepatocyte malignant transformation. These steps are mainly triggered by hepatitis B, C or transfusion-transmitted virus, either alone, or with other factors. Diabetes seems to be greatly a leading disease. Schistosomiasis, a blood infestation, mostly disturbs Nile habitants leading also to bladder, renal and hepatic cancers. Alcoholism, food and water pollutants and some other drugs can lead to HCC. Additionally, some hereditary diseases, as hemochromatosis, -1-antitrypsin deficiency and tyrosinaemia are known to develop to HCC, if not discovered.[...] Read More.
Keywords: HCC, HCV, HBV, TTV, schistosomiasis, alcoholism, NASH, hereditary diseases.
Full text
Views:1858
Download:1961
文章
Full Length Research Paper
Abstract: Accepted 05 March, 2021 Introduction: The prevalence of the hepatitis B infection is estimated at 9.1% in Burkina Faso. We aimed at describing the epidemiological and clinical features of the disease. Materials and methods: we implemented a cross-sectional study from January 1st, 2004 to December 31st, 2015. Patients aged more than 15 years with positive HBsAg for over six months and positive HbeAg were included. Results: We analyzed the data of 148 participants. The sex ratio was three; 69% of the participants were ≤34 years old. The mean duration of HBsAg carriage was 6.4 ± 5.6 years. The hepatic fibrosis blood test showed an activity ≥ 2 in 25 (83.3%) patients and fibrosis ≥ 2 in 23 (76.7%) patients. The liver biopsy found no inflammatory (A0) and a minimal activity (A1) in 25% and 62.5% of the patients, respectively. Portal fibrosis without (F1) and with some septa (F2) was found in three patients, respectively. Conclusion: Viral hepatitis B is a silent disease with a small proportion of patients experiencing viral replication activity. The control of this disease of public health interest is based mainly on programs of large immunization of the populations and a close monitoring of the infected people.[...] Read More.
Keywords: Viral hepatitis B, HBe antigen, HBs antigen, Sub Saharan Africa, Burkina Faso.
Full text
Views:2314
Download:2267
文章
Orhue N. E. J*. and Nwanze E. A. C.
Abstract: A major feature of infection with trypanosomes is the development of anaemia. In this study, the effect of Scoparia dulcis ( Atiotiousha in Akoko-Edo) on Trypanosoma brucei induced anaemia was investigated in fifteen rabbits divided into three groups of n = 5 over a period of twenty eight days. Changes in Packed cell volume (PCV), Haemoglobin (Hb) concentration, Red blood cell count (RBC), Mean cell haemoglobin (MCH), Mean cell haemoglobin concentration, (MCHC) and Mean cell volume (MCV) were monitored over the period. The results obtained indicate that infection with T. brucei results in a significant decrease (p0.05) changes were observed in MCH, MCHC and MCV. However the severity of observed anaemia was significantly less pronounced (p[...] Read More.
Keywords: Scoparia dulcis, Trypanosoma brucei, Rabbits, PCV, Haemoglobin.
Full text
Views:2266
Download:2160
文章
Okunowo Wahab Oluwanisola* and Ogunkanmi Liasu Adebayo
Abstract: An investigation was conducted on the pH, nutritional and cost benefit of the use of different substrates for the production of Curvularia pallescens Boedijn. The growth of the organism was examined at pH range between 5.5 and 8.6 and on different growth media, potato carrot agar (PCA), potato dextrose agar (PDA), sabouraud agar (SA), tap water agar (TWA), water hyacinth agar (WHA) and Czapek-Dox agar (ZA). Also, the growth of the organism was examined on different enrichment media “Czapek-Dox” with its sodium nitrate substituted with equal amount of different nitrogen sources (ammonium chloride, ammonium nitrate, glutamine and sodium glutamate). WHA produced significantly (P < 0.001) highest amount of mycelial growth (84.95 ± 0.05 mm) on day 6 than other media types. The spore concentration was highest, 6.6 E06 ± 3.33 E05 spores/ml with TWA. The colony size was significantly (P < 0.001) highest, 84.9 ± 0.1 mm on day 10 with sodium glutamate compared with other nitrogen sources. Spore count was only observed on ammonium chloride (1.67E06 ± 3.33E05 spores/ml), the optimal growth pH was 5.5. The cost of production of the organism per culture plate on WHA was 61.3 and 82% lesser than on PDA and SA respectively. The formulated water hyacinth agar medium appeared most economically feasible for the mycelial production of C. pallescens Boedijn.[...] Read More.
Keywords: Curvularia pallescence Boedjin, growth measurement, pH measurement.
Full text
Views:2193
Download:2128
文章
Obinaju, Blessing Ebele
Abstract: Industrialization has excessively modified the discharge and distribution of arsenic in the environment through natural and anthropogenic activities. Gastrointestinal tract, Lung and Dermal absorptions account for various adverse effects associated with arsenic toxicity. The knowledge of arsenic biotransformation holds the trivalent species (DMA3+ and MMA3+) accountable for most arsenic toxicity with mechanisms of action such as the inhibition of DNA replicating or repair enzymes, interference with tissue respiration and oxidative stress. There is information of transplacental arsenic carcinogenesis and arsenic disruption of endocrine activity but most of these mechanisms remain poorly understood. More importantly, the exact dose at which arsenic induces tumours in vivo is still a major research question and therefore necessitates more scientific investigation/ research.[...] Read More.
Keywords: Arsenic, toxicity, carcinogenesis.
Full text
Views:2220
Download:2112
文章
W. Obidah*, U. A. Sa’ad and A. U. Wurochekke
Abstract: The aqueous extract of Cassia sieberiana stem bark was administered to groups of 4 albino rats (160 ± 10 g) at 0, 20, 60 or 180 mg/kg body weight daily by gavages for six weeks. A 7% decrease in mean body weight gain was observed in the group treated with the highest concentration of the extract (180 mg/kg). Groups treated with the extract showed significant (p < 0.05) increase in serum ALT and AST activity. Significant (p < 0.05) increase in serum urea and creatinine concentrations, together with decrease in serum total protein concentrations were observed in the group treated with 180mg/kg body weight of the extract. These results indicate that oral administration of aqueous extract of Cassia sieberiana stem bark to rats result in hepatotoxicity even at lower dose levels of 20 - 60 mg/kg and nephrotoxicity at higher doses of 180 mg/kg.[...] Read More.
Keywords: Cassia sieberiana, oral, rats, repeated dose toxicity.
Full text
Views:1920
Download:2022
Submit Your Manuscript Now