Background: Diazinon is a globally used pesticide. Morus nigra (Black Mulberry) possesses flavonoids and phenols, which act as antioxidants. The objective of this study was to determine the possible protective effects of Morus nigra leaf extract on Diazinon-induced hepatotoxicity in rats. Material and Method: It was an experimental study conducted in the Department of Anatomy, Postgraduate Medical Institute, Lahore. A total of 36 healthy male Wistar albino rats were divided into three groups with 12 rats in each group. Group I was the control group. Group II was treated with 60 mg/kg body weight (bw) Diazinon daily for 4 weeks through orogastric intubation. Group III was treated with Diazinon 60 mg/kg bw daily along with 350 mg/kg bw of Morus nigra extract daily for 4 weeks through orogastric intubation. Blood samples were collected through cardiac puncture, for estimation of alanine transaminase (ALT) and aspartate transaminase (AST) levels. Liver dissection was done, slides of the hepatic tissue were prepared and studied under light microscope. The histology of hepatocytes, portal lobule, portal vein and sinuosoids was observed. SPSS 20 was used for data analysis. One-way ANOVA followed by Tukey’s test was applied to establish difference among groups with P-value ≤0.05 considered as statistically significant. Results: Histology of Liver tissue in group I showed normal morphology while group II revealed hypertrophy and vacuolization of hepatocytes, congested central vein and sinusoids and presence of necrotic foci. These toxic effects were reversed by the co-administration of Diazinon with Morus nigra in group III which showed normal histology of the hepatic tissue. Similarly, Diazinon administration resulted in significant elevation of ALT and AST levels (P-value<0.05), while, Morus nigra resulted in a considerable decline in the levels of these enzymes (P-value <0.05). Conclusion: Morus nigra extract has hepatoprotective effects against liver toxicity induced by Diazinon.

Objective: In this study the effects of carbonated drinks on the healing process of oral submucosa of albino wistar rats were evaluated. Design: This study comprised of 24 adult albino wistar rats which were randomly assigned to a experimental group 1 and an experimental group 2. A circular wound of 3.0 mm was created on the buccal mucosa of each albino wistar rat at day 0. Animals in control group were fed with chow pellet and water while those in experimental group were fed with chow pellet and a commercially available carbonated drink instead of water. 6 animals from each group were sacrificed by decapitation under deep anesthesia at day 7 and 21. The tissue dissected from buccal area was serially sectioned and stained with Haematoxylin & Eosin stains. Wound site was histologically assessed for differences in the healing pattern of submucosa; inflammatory cell count and neovascularization between two groups. Results: There was a marked difference in the healing pattern between the two groups. Animals in group-1 showed a normal healing pattern with formation of a fibrous connective tissue at the end of day-21. In the group-2, there is altered healing phenomenon at the end of the experiment with a subsequent delayed inflammatory reaction at day-21 Conclusion: These findings suggest that consumption of carbonated drinks can disrupt oral wound healing. The contents in carbonated drinks have a proinflammatory action on the soft tissue.

Objective: To evaluate the hepatoprotective effects of Tecomellaundulata stem bark extract on isoniazid induced hepatic damage based on liver enzymes and Liver function test in rat models. Study design and Setting: An experimental study conducted at Department of Pharmacology at Al-Tibri Medical College and Hospital, Isra University Karachi Campus and Dow University of Health Sciences, Karachi. Methodology: Total twenty-four rats were studied. The albino rats that were male, healthy, and weighing 200-250grams were included in this study. Rats were divided into four groups, each group having six rats and treated once daily orally for 30 days. Group A was control group and treated with normal animal diet and water; Group B was Isoniazid treated group and induced by oral administration of Isoniazid (INH) 50mg/kg. Group C was treated with Isoniazid 50mg/kg and Tecomellaundulata bark extract with low dose of 200mg/kg . Group D was treated with Isoniazid 50mg/kg and Tecomellaundulata bark extract with high dose of 400mg/kg . All the animals were weighed before commencement of the study. Liver enzymes were noted after the end of experiment. P value of <0.05 was taken as significant. Results: While comparing the mean values of AST,ALT, ALP and GGT in all four groups group; the statistical significant difference (p<0.001) was found. The mean levels in of total Bilirubin in group A was 0.69 ±0.01, group B 1.04 ±0.04, in group C was 1.15 ±0.39, and in group D was 1.04 ±0.44 with the significant difference (p=0.004). Conclusion: Tecomellaundulata has a protective effect on isoniazid induced toxicity on liver as evidenced by liver function test on rat models.

ABSTRACT Aim and Objective: Acetaminophen, commonly known as Paracetamol is a widely used pain killer. However, its overdose leads to kidney damage. Aloe vera gel has abundant antioxidants. The study was designed to establish the protective effect of Aloe vera gel extract on the nephrotoxicity induced by acetaminophen. Material and Method: Three groups were made each having six rats. The rats belonging to group A (control) were provided standard diet and injected with 5 ml normal saline on the 8th day. Group B rats were fed with normal pellet diet and on the 8th day injected with 1000 mg/kg b.w acetaminophen, dissolved in 5 ml of normal saline. The rats of group C were fed with standard pellet diet along with 400 mg/kg b.w Aloe vera gel extract. On the 8th day, they were injected with acetaminophen, 1000 mg/kg b.w dissolved in 5 ml normal saline. The kidneys of all rats were removed and studied under light microscope. The biochemical markers including blood urea nitrogen (BUN), serum creatinine and uric acid levels were measured. Glomerular morphometry was done to evaluate the renal morphology. Results: Aloe vera gel extract produced a significant improvement in the glomerular diameter (p value< 0.01). Biochemical markers including blood urea nitrogen and creatinine were improved and uric acid levels were significantly reduced (p value<0.01). Conclusion: Aloe vera gel extract can serve as an easily available and a safe prospect for the treating nephrotoxicity.