@article {2275, title = {HIF-1α and VEGF Expression in Adult-type Diffuse High-Grade Astrocytoma}, journal = {Pharmacognosy Journal}, volume = {16}, year = {2024}, month = {April 2024}, pages = {466-470}, type = {Research Article}, chapter = {466}, abstract = {

Background: Gliomas stand as the prevalent primary malignant brain tumors in adults with astrocytoma being more common than oligodendroglioma. Based on isocitrate dehydrogenase (IDH) status, astrocytomas are classified as astrocytoma with mutated IDH and astrocytoma with wild-type IDH (glioblastoma). Tumor growth relies on angiogenesis, a process facilitated by key factors such as Vascular Endothelial Growth Factor (VEGF) and Hypoxia Inducible Factor-1α (HIF-1α). This study aims to investigate the VEGF and HIF-1α expression profiles in grade 4 astrocytomas, encompassing both mutated IDH and wild-type IDH. Method: This study was conducted on 43 formalin fixed paraffin embedded (FFPE) materials of surgical specimens from adult-type grade 4 astrocytoma. Immunohistochemistry with IDH1 R132H was carried out to determine the IDH status, followed by assessment of HIF-1α and VEGF expression using semi-quantitatively utilizing immunoreactive score (IRS), and categorized as negative, weak, moderate, and strong. Results: Statistical analysis revealed no disparity in HIF-1α expression between both tumor types, nor was there a difference in VEGF expression in both tumor types, yet a positive association was established between VEGF and HIF-1α expression levels in IDH mutant and wild type of grade 4 astrocytoma with moderate strength (r=0.433). Conclusion: HIF-1α and VEGF are positively linked, despite the IDH status, and simultaneously work to promote angiogenesis in diffuse high-grade astrocytoma.

}, keywords = {Astrocytoma IDH mutant grade 4, Glioblastoma IDH wild type, Glioma, HIF-1α, VEGF}, doi = {10.5530/pj.2024.16.74}, author = {Febria Rizky Patikawa and Dyah Fauziah and Willy Sandhika} } @article {896, title = {Screening and Evaluation of Lectin and Anti-Cancer Activity from the Phloem Exudate/Sap of the Indian Dietary Ethnomedicinal Plants}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {May 2019}, pages = {570-578}, type = {Original Article}, chapter = {570}, abstract = {

Objective: Lectins are extremely significant biomolecules to study several biological progressions. In this present investigation, we are screening the crude phloem exudate/ sap sample from different ethnomedicinal plants were evaluated for lectin and anticancer activity. Methods: The lectin activity of crude phloem exudate/sap samples were confirmed by haemgglutination assay and anticancer activity by using trypan blue, MTT and in-ovo CAM angiogenic assay. The tumor cell nuclei resulting in Giemsa stain, AO/EtBr stain, DNA Fragmentation and Caspase- 3 inhibitor assay. Results: Our experimental data show that the phloem exudate/sap sample S2 (Musa Acuminata), sample S4 (Euphorbia Geniculate) exerting the potent lectin activity, sample S5 exerting very low lectin activity against the trypsinized rabbit erythrocytes and decreases the cell viability in EAC cells in-vitro. Sample S2, S4 and S5 exerts significant cytotoxic effect against the various human cancer cell lines and regressed the neovasculature (development of new blood vessels) in the developing CAM embryos when compared to the other crude samples. The apoptotic inducing activity of crude phloem exudate/sap samples was revealed by DNA fragmentation assay, caspase-3 inhibitor assay and cellular morphology were studied by fluorescence staining methods. Conclusion: This study reports that some of the isolated crude phloem exudate/sap samples show potent lectin activity and anti-cancer activity in different human cancer cell lines. The further additional experiment needs to purify and characterize the bioactive lectin components from the potent sample which is responsible for pro-apoptotic, anti-angiogenic activity and mechanism involved.

}, keywords = {Angiogenesis, Apoptosis, EAC, Haemagglutination, Lectin, VEGF}, doi = {10.5530/pj.2019.11.91}, author = {Balaji Kyathegowdanadoddi Srinivas and Madhu Chakkere Shivamadhu and Preethi Saligrama Devegowda and Gurukar Mathew and Theethagounder Tamizhmani and Senthilkumar Gnanavadevel Prabhakaran and Shankar Jayarama} }