Cellular elements of maturing brain are vulnerable to insults, which lead to neurodevelopmental defects. There are no established treatments at present. Here we examined the efficacy of selective adenosine A2A receptor inhibitor SCH58261 to combat brain injury, particularly oligodendrocyte (OL) lineage cells, in young rats. Wistar rats (n = 24, 6.5 days old) were randomly divided into equal groups of four. The sham (SHAM) group received no treatment, the vehicle (VEHICLE) group received 0.1% dimethylsufoxide, the injury (INJ) group was exposed to oxygen-glucose deprivation insult, and the injury+SCH58261 (INJ+SCH58261) group was exposed to the insult and received 1 μM SCH58261. Immunocytochemical experiments revealed that there was a significant reduction in the populations of mature OL (MBP+ OLs) and immature OL precursors (NG2+ OPCs) in the INJ group compared to SHAM group. Furthermore, there was also a significant increase in the percent of apoptotic MBP+ OL and NG2+ OPC populations as evidenced by TUNEL assay. In addition, there was a significant reduction in the proliferation rate among NG2+ OPCs, which was confirmed by BrdU immunostaining. On the other hand, treatment with SCH58261 significantly enhanced survival, evidenced by the reduction in apoptotic indices for both cell types, and it is preserved the NG2+ OPC proliferation. Activation of adenosine A2A receptors may contribute to OL lineage cell loss in association with decreased mitotic behavior of OPCs in neonatal brains upon injury. Future investigations assessing ability of SCH58261 to regenerate myelin will provide insights into its wider clinical relevance.
Mohamed A. Al-Griw, Rabia O. Alghazeer, Nuri Awayn, Ghalia Shamlan, Areej A. Eskandrani, Afnan M. Alnajeebi, Nouf A. Babteen, Wafa S. Alansari(1-2020)

The pattern of diabetic deaths in the medical wards of Tripoli Medical Centre was retrospectively studied. During a three‐year period, 575 diabetic deaths occurred, accounting for 26.2% of all medical deaths. The mean age at death was 65.33±12.7 years. Cardiovascular disease (183 [31.8%]), cerebrovascular accidents (102 [17.7%]) and infection (83 [14.4%]) were the most common complications associated with diabetic deaths. Other causes were malignancy (10%), liver cirrhosis (5.6%), and acute diabetic complications (5%). Forty‐five (7.8%) deaths unaccountable for may be due to other unknown causes. Factors predictive of mortality, such as admission diagnosis of hyperosmolar non‐ketotic state, cerebrovascular disease, acute coronary syndromes or infection were associated with poor prognosis. Admission hyperglycaemia, old age, renal dysfunction and prior stroke were also associated with poor admission outcome. The excess mortality, mainly due to atherosclerotic complications, is potentially preventable through implementation of serious approaches to the management of cardiovascular risk factors. arabic 8 English 64
Hawa Juma El-Shareif(7-2010)

GLUT4 translocation in response to insulin involves the PI3K/Akt pathway and IR mediated phosphorylation of CAP (SORBS1), and formation of the CAP:Cbl. These pathways act in a coordinated manner to regulate glucose, lipid and protein metabolism. In previous studies, T228A polymorphism of SORBS1 gene has been shown to be a protective factor for obesity, type-2 diabetes mellitus (T2DM), polycystic ovary (PCOs), and lacunars infarction. Objectives: The objective of this study was to investigate the association between this polymorphism and T2DM, gestational diabetes (GDM), and obesity. Methods: Genotyping was achieved by PCR-RELP in 227 individuals chosen randomly from the out patient’s clinics of Al-Jala maternity hospital of Tripoli and Gharian hospital, including: 63 T2DM patients, 59 GDM patients, 57 obese, 47 healthy control individuals from Libyan pregnant women population (North-West Region). Results: The results revealed that this polymorphism has no association with T2DM, GDM, and obesity in comparison with the control sample. Conclusion: T228A polymorphism of SORBS1 gene is not associated with the pathological conditions studied. arabic 15 English 98
Abdulla Bashein(1-2013)