Background: Biochemical, hematological and histological changes are major observable clinical and pathological factors associated with Diabetes mellitus. Derangement in the levels of these parameters increases the risk of the development of complications. In another hand, gastrointestinal intolerance due to the development of lactic acidosis on the gastrointestinal tract and the intestinal microbiome is the toxic side effect of various synthetic antidiabetic agents. The use of Kigelia africana fruit extract for the treatment of diabetes has been scientifically validated. This study therefore aimed at investigating changes in the biochemical, hematological and histological parameters as well as the determination of the functional groups present in the hexane fraction of the fruit. Methods: The fruits were extracted with ethanol and partitioned with n-hexane to obtain the hexane fraction. Diabetic rats induced with streptozotocin (STZ) were divided into 5 groups of 5 animals each and treated with 100, 200 and 400 mg/kg body weight (BW) hexane fraction alongside reference standard; glibenclamide. Fasting blood glucose levels and their body weights were monitored weekly. Animals were sacrificed at the end of 28-day treatment. Blood, liver, and kidney were collected for biochemical, hematological and histopathological analyses. Fourier transform infrared resonance (FTIR) spectroscopic analysis was carried out on the hexane fraction for functional group determination. Results: The hexane fraction of K. africana fruit extract decreased fasting blood glucose (FBG) levels significantly with ameliorative effects on the hematological parameters such as packed cell volume (PCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), and red blood cells (RBC) etc. There were significant regenerative differences in the biochemical activities as well as the renal cortex and midzone sections of the rat's kidney and liver when compared with untreated diabetic rats. The presence of polyphenolic functional groups via FTIR analysis suggested high antioxidant activities of the fruit extract.
Conclusion:The use of Kigelia africana fruit extracts protects against biochemical, hematological and histological changes that are injurious to diabetic patients. Therefore, Kigelia africana fruit is a good hepatic-and nephroprotective agent and has a hemato-protective ability.
Blighia sapida has been used in the treatment of different pathologies. The study aimed at evaluating the acute and sub-chronic toxicity of ethanol stem-bark extract of B. sapida. The acute toxicity was evaluated by gavage administration at single dose and the extract was also administered at doses of 250, 500 and 750 mg/kg body weight every other day for ninety day. No mortality or observable signs of toxicity were observed for acute and sub-chronic effects of the extract on the tested animals. No significant difference (P > 0.05) in haematological and biochemical parameters compared to the control group. However, histopathological observation revealed some derangements which could be due to continuous consumption of the extract by the animals. It implied that care must be exercised in the use of the plant for a long period of time to prevent its possible long-term toxic effects.
The relationship between blood lead (Pb) and serum levels of calcium and of neural nutrients such as thiamine and magnesium (Mg) has been determined in a Nigerian population that is occupationally exposed to Pb. Forty-seven male Pb workers were recruited as test subjects and 25 males unexposed to Pb served as controls. The test subjects were classified into three groups, based on severity of exposure to Pb. Blood lead (BPb) and the serum levels of Mg, thiamine, and calcium were determined in both test subjects and controls. The mean blood Pb level was not significantly higher in Pb workers. In contrast, Mg and thiamine levels were significantly decreased (p<0.05; p<0.01, respectively). However, the calcium level was not significantly lower in test subjects than in controls. Also, there was a significant negative correlation between serum thiamine and blood Pb levels (r=-0.50; p<0.01). Furthermore, there was a significant negative correlation between serum calcium and BPb levels (r=-0.41; p<0.01). This study has shown that relatively low BPb levels can enhance Pb absorption and also potentiate Pb neurotoxicity in the presence of decreased serum thiamine and Mg levels.
Kidney damage has been associated with administration diclofenac, a phenylacetic acid derivative belonging to the nonsteroidal anti-inflammatory drugs (NSAIDs), which is commonly used for the treatment of various diseases such as rheumatoid arthritis, ankylosing spondylitis, acute muscle pain conditions and osteoarthritis. This study investigated the exact mechanism of diclofenac in renal toxicity by determining the involvement of oxidative stress in rats. Adult male Wistar rats were divided into two groups of eight rats in each group and orogastrically treated for three days. Group 1 served as the normal control and received normal saline (0.9% w/v) and group 2 received 40 mg/kg body weight of diclofenac for three days. Administration of diclofenac caused degeneration of the kidney of rats as evidenced by significant elevation in the serum levels of creatinine, urea, albumin, uric acid, protein and electrolytes and the activities of renal-5'-nucleotidase and glucose-6-phosphate-dehydrogenase (G6PDH) compared with control. Furthermore, administration of diclofenac decreased the activities of superoxide dismutase (SOD), catalase, glutathione peroxidase (GPx), and glutathione-S-transferase (GST) and the level of glutathione with concomitant increase in hydrogen peroxide (H 2 O 2) and malondialdehyde (MDA) levels in the kidney of the diclofenac treated groups compared with control. These findings reveal that administration of diclofenac may impair kidney functions through induction of oxidative stress.
Key words:Neem Leaves Extract, Clarias gariepinus, Haematological Parameters, Biochemical indices, Tissues Aqueous extract of neem leaves has been used on fish-farms to control of fish parasites and fish fry predators such as dragon-fly larvae. Generally, Neem extract is considered of low toxicity towards non-target aquatic life. Therefore, the effects of Neem leaves (Azadirachta indica) aqueous extract on catfish were investigated using the histology of intestine, gill and liver, haematological and biochemical parameters as indices. Ninety (90) post-juvenile African catfish (Clarias gariepinus) weighing 42.40 ± 2.50g were used. Experimental groups in triplicate were exposed bi-weekly to 3.5% and 7% LC 50 of neem leaves aqueous extract infused in commercial floating feed for four weeks while the control group was exposed to untreated feed. At the end of 4 weeks, blood samples were collected for biochemical and haematological analysis and organs (intestine, gills and liver) were collected. The tissues from all the groups showed no visible pathological changes indicating non-toxicity to liver, intestine and gills of Clarias gariepinus. All haematological values were within normal range and increase in the level of circulating lymphocytes in neem treated groups may be indicative of immune response readiness and hence suggestive of immune stimulation by neem extract. Progressive decrease in AST and ALT levels indicates hepato-protective activity of Neem leaves meal while increase in total protein and globulin levels recorded indicated immune stimulatory effect of Neem. Therefore, the use of Neem leaves aqueous extract in fish industry should be encouraged because of its efficiency in enhancing immunity against disease and suppression of the growth of specific pathogenic organism.
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