Keywords : IHC


Curative and protective potentials of Moringa oleifera leaf decoction on the streptozotocin-induced diabetes mellitus in albino rats

Nahla A. Refat; Moustafa S. Abou El-Fattouh; Mohamed M. Mohamed Metwally; Tarek Khamis; Mohamed A. Abdalla

Iraqi Journal of Veterinary Sciences, 2023, Volume 37, Issue 1, Pages 73-82
DOI: 10.33899/ijvs.2022.133509.2242

The present study was designed to investigate the protective, and curative potentials of Moringa oleifera (MO) leaves powder against streptozotocin (STZ) induced type 1 diabetes mellitus (T1DM) in rats. Fifty adult Wistar male albino rats were randomized and divided into five equal groups: The normal control group, the Moringa group, The diabetic group, the therapeutic group, and the diabetic rats (3 days after STZ injection) were received-MO-for successive 8 weeks and the prophylactic group, the rats were received-MO-for 2 weeks before STZ induced diabetic rats and lasted for 8 weeks. The protective or treated oral administration of 1 ml freshly prepared aqueous leaf decoction of-MO-revealed a significant upregulation of the mRNA expression of PDX-1, Ngn3, VEGF, IGF-1, and GLUT-2. Additionally, it induced a significant downregulation of FBG level compared to that of the diabetic group, a significant reduction in MDA level and a significant elevation in the TAC level. Furthermore, the histopathological observations of pancreas, liver, and kidney tissues affirmed the improvement in treated and prophylactic groups compared to STZ-diabetic groups, and the improvement in the prophylactic group was more distinct than the treated group. MO-aqueous leaf extract can treat and protect against STZ-induced T1DM; via its antioxidant action (increase the TAC and decrease MDA). Thus, it has the potential for utilization as a prophylactic against diabetes.

Immunohistochemical detection of P53 and MDM2 and its correlation with histological grading system in ovine pulmonary adenocarcinoma

Enas S. Mustafa; Waseem H. Al-Jameel; Saevan S. Al-Mahmood

Iraqi Journal of Veterinary Sciences, 2021, Volume 35, Issue 4, Pages 687-692
DOI: 10.33899/ijvs.2021.127779.1527

Ovine pulmonary adenocarcinoma (OPA) is a cancer disease in sheep caused by Jaagsiekte sheep retrovirus (JSRV). The retrovirus is distinctive among viruses for inducing carcinogenesis of lung epithelial cells and cause a lung adenocarcinoma. OPA has numerous characters same as human lung adenocarcinoma, involving a similar histological organization and motivation of most cell signalling pathways. P53 pathway is frequently changed in human lung adenocarcinoma, in specific due to the increase expression of MDM2 and it is the main regulator of P53. Here, we have a go at something new to confirm the possible expression of p53 and MDM2 in OPA as a translational animal model for human lung adenocarcinoma, and to identify the correlation between P53 and MDM2 expression. 1645 of lung samples from different breeds were macroscopically tested. OPA was recognized in 21 samples and further assessed by histology and immunohistochemistry. Histologically, proliferative cancer foci were distributed and contained of cuboidal or columnar cells and arising papillary to acinar patterns. The nuclear expression of P53 and MDM2 was detected in 90% and 95% respectively in the cancer epithelial cells of OPA respectively. Detectable immunoreactivity for P53 was detected in 6 out of 7 grade I, 7 out of 8 grade II, and 6 out of 6 grade III cancers. In reverse with P53, MDM2 was detected in 18 cases with moderate and high expression. In addition, there was statistically relationship between both protein expressions. Our findings suggested that overexpression of MDM2 plays an essential part in OPA carcinogenesis and is dependable on the grading system, and its overexpression can be convinced by P53 expression.