Rivers State University of Science and Technology

About: Rivers State University of Science and Technology is a education organization based out in Port Harcourt, Rivers, Nigeria. It is known for research contribution in the topics: Population & Threatened species. The organization has 1826 authors who have published 1833 publications receiving 15183 citations.

The in vivo antioxidant effect of vitamin C on hemogram in Paraquat treated male rats (rattus norvegicus)

Abstract: Paraquat (PQ) is one of the most used herbicide globally; applied around trees in orchards and between crop rows to control broad-leaved and grassy weeds. Its oxidation results in the formation of superoxides which causes damage to cellular components. In this study, we determined the antioxidant effect vitamin C has on hemograms [hemoglobin (Hb), packed cell volume (PCV) and total white blood cells count] of rats under these toxic insults. The animals grouped (A-D), comprising subgroups without vitamin C (A 1 , B 1 , C 1 , D 1 ) and subgroups on vitamin C (A 2 , B 2 , C 2 , D 2 ), received different sub-lethal doses of PQ administered intraperitoneally monthly to the animals over a period of three months. The Hb values obtained were significantly reduced (P≤0.05) at month 1 and (P≤0.001) at months 2 and 3. These changes became more pronounced with increased dose and time. Vitamin C treated subgroups (B 2 , C 2 and D 2 ) had better Hb values than those without it (B 1 , C 1 and D 1 ) but the values were still significantly low when compared to the control subgroups (A 1 and A 2 ). This same trend was observed in the PCV results obtained. The Control subgroups showed that vitamin C treated subgroup (A 2 ) had a more improved hemogram values than subgroup on water only (A 1 ), but they were all higher than that of the test subgroups. These PQ induced anaemia were ameliorated by the subsequent administration of vitamin C, and continuous treatment with vitamin C restored the health status of the animals so treated.

Test scores and on‐the‐job performance of bank workers in Nigeria: A longitudinal and correlational study

Abstract: The empirical study reported here attempts to establish the degree of relationship between test scores and on‐the‐job performance scores (job evaluation) of bank workers. We developed two related research hypotheses ‐ Pearson’s product‐moment correlation coefficient (γ) and Pearson’s contingency coefficient (C) to establish the degree of relationship between test scores and on‐the‐job performance scores. The results of the two hypotheses clearly indicates that there exist perfect linear relationship between test scores and on‐the‐job performance scores of bank workers. The result of this study is likely to assist scholars in bridging any existing conceptual gaps in test scores and on‐the‐job performance and practitioners in formulating appropriate policies on employee test scores and job performance scores.

Evaluation of Vitamin B₁₂, Folate, Haematological Parameters and Some Reproductive Hormones in Subjects Attending Fertility Centres in Port Harcourt

Abstract: Background: Vitamin B12 has proven to have effect in fertility because it improves mature oocyte counts and embryo quality in women and helps in sperm quality in men, so it is efficient to carry out vitamin B12 analysis in addition to other hormone profile during routine infertility examination. Aim: The aim of this study was to evaluate vitamin B12, folate, some haematological parameters and some reproductive hormones in men and women attending fertility centres in Port Harcourt. Study Design: This study is a case-control and comparative study, and a random convenient sampling method was employed. A total of two hundred (200) apparently healthy participants within the reproductive age group of 18-44 years attending the fertility clinics of Rivers State University Teaching Hospital (RSUTH) Port Harcourt formerly Braithwaite Memorial Hospital (BMH) which is the only State Government owned teaching hospital in Rivers State located at Forces Avenue Port Harcourt and Save a Life Mission Hospital Port Harcourt a private owned fertility hospital located at Stadium Road, Port Harcourt were recruited for this study. Results: The result showed that there was no statistically significant difference in haematological parameters in cases of infertility in the female and male test groups as compared to control groups (p>0.05). The mean ±SD showed non-significant difference of serum folate in the male and female test and control groups of the study (p>0.05). This study however observed Vitamin B12 level to be statistically significantly lower in infertile females when compared with the controls (p=0.0078). There was also a statistically significant difference between the mean values of Vitamin B12 in the male test and control groups of this study (p<0.0001). Prolactin levels in the females showed a significant difference between the test and control group at (p<0.0001), with the mean (± SD) value higher in the test than the control which shows that the infertile female group were mostly having high prolactin levels. Follicle-stimulating hormone (FSH) and Luteinizing hormone (LH) were significantly lower in infertile female group as compared with the control (p<0.0001). In the study carried out on the principal reproductive male hormone testosterone there was a statistically significant difference between the test and control groups (p<0.0001). Conclusion: There was a significant fall in vitamin B12 alongside predominant fertility hormones like testosterone in the infertile male subjects. There was also significant reduction in the serum concentration of vitamin B12 with a corresponding fall in serum concentration of fertility hormones like; luteinizing hormone (LH) and follicle stimulating hormone (FSH) in the infertile females and a significant rise in the concentration of the female prolactin level. Therefore, Vitamin B12 should be included in the evaluation of infertility either primary or secondary alongside other vital conventional parameters usually considered in infertility cases.