Abstract
Prolonged hyperglycemic conditions in type 2 diabetes mellitus (T2DM) cause pathological and functional damage to many organs and tissues, including the kidneys, retina, skin, and neuronal tissues, resulting in the development of microvascular diabetic complications. The altered renin angiotensin aldosterone system (RAAS) pathway has been reported to play an important role in the development of insulin resistance in T2DM and associated complications. The current study was carried out to evaluate the association of risk factors and altered expression of RAAS genes in T2DM patients without complications and T2DM patients with complications (retinopathy, nephropathy, and neuropathy). Four hundred and twenty subjects including 140 healthy controls, 140 T2DM patients with diabetic complications, and 140 T2DM patients without diabetic complications were included in the study. Risk factors associated with the development of T2DM and diabetic complications were evaluated. Further, expression analysis of RAAS genes (AGT, ACE, ACE2, and AGT1R) was carried out using qRTPCR in healthy controls, T2DM patients with complications, and T2DM patients without complications. Various risk factors like urban background, higher BMI, alcoholism, smoking, and family history of diabetes among others were found to be associated with the development of T2DM as well as diabetic complications. The expression level of AGT, ACE, and AGT1R was found to be upregulated whereas ACE2 was found to be downregulated in T2DM patients with complications and T2DM patients without complications as compared to controls. Altered expression of the studied genes of RAAS pathway is associated with the development of microvascular diabetic complications.
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Data Availability
The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
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We acknowledge all the patients who agreed to participate in the current study.
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Prabhsimran Kaur is thankful to CSIR for providing financial assistance (grant no. 09/1051(0020)/2018-EMR-I). We are also thankful to DST for FIST grant (SR/FST/LS-I/2017/49) to the Department of Human Genetics and Molecular Medicine, Central University of Punjab.
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Laxmipriya Jena, Prabhsimran Kaur, Tashvinder Singh, Sushil Kotru, and Anjana Munshi designed the research study. Laxmipriya Jena collected the samples with Sushil Kotru’s help. Laxmipriya Jena and Prabhsimran Kaur carried out experimental work. The statistical evaluation was done by Laxmipriya Jena, Prabhsimran Kaur, and Tashvinder Singh. Compilation of the results and manuscript was prepared by Laxmipriya Jena, Prabhsimran Kaur, Tashvinder Singh, Kangan Sharma, and Anjana Munshi. The manuscript was critically revised and edited by Anjana Munshi and Sushil Kotru.
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Jena, L., Kaur, P., Singh, T. et al. Gene Expression Analysis in T2DM and Its Associated Microvascular Diabetic Complications: Focus on Risk Factor and RAAS Pathway. Mol Neurobiol (2024). https://doi.org/10.1007/s12035-024-04127-2
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DOI: https://doi.org/10.1007/s12035-024-04127-2