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Type 2 diabetes mellitus (T2DM) adversely affects various organs, including the brain and its blood barrier. In addition to the brain, hyperglycemia damages the testes. The testes possess blood-tissue barriers that share common characteristics and proteins with the blood-brain barrier (BBB), including breast cancer-resistant protein (BCRP).

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Intradermal Advanced Glycation End-products Relate to Reduced Sciatic Nerve Structural Integrity in Type 2 Diabetes.

Clin Neuroradiol

January 2025

Department of Endocrinology, Diabetology, Metabolic Diseases and Clinical Chemistry (Internal Medicine 1), Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany.

Background: Cardiovascular risk management is beneficial, but stringent glycemic control does not prevent the progression of distal sensorimotor polyneuropathy (DSPN). Persistent hyperglycemia-induced alterations and cardiovascular factors may contribute to diabetes-associated nerve damage. This study aimed to evaluate the correlation between skin auto-fluorescence (sAF), an indicator of dermal advanced glycation end-product (AGE) accumulations, cardiovascular risk, and changes in peripheral nerve integrity.

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Vascularization of human islets by adaptable endothelium for durable and functional subcutaneous engraftment.

Sci Adv

January 2025

Division of Regenerative Medicine, Hartman Institute for Therapeutic Organ Regeneration, Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, New York, NY, USA.

Tissue-specific endothelial cells (ECs) are critical for the homeostasis of pancreatic islets and most other tissues. In vitro recapitulation of islet biology and therapeutic islet transplantation both require adequate vascularization, which remains a challenge. Using human reprogrammed vascular ECs (R-VECs), human islets were functionally vascularized in vitro, demonstrating responsive, dynamic glucose-stimulated insulin secretion and Ca influx.

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Metformin ameliorates peripheral neuropathy in diabetic rats by downregulating autophagy via the AMPK pathway.

Arch Endocrinol Metab

January 2025

Fuzhou First General Hospital Affiliated with Fujian Medical University Department of Endocrinology FuzhouFujian China Department of Endocrinology, Fuzhou First General Hospital Affiliated with Fujian Medical University, Fuzhou, Fujian, China.

Objective: Diabetic neuropathy (DN) is an important complication of diabetes mellitus. Autophagy is considered to be potentially involved in the regulation of DN. Metformin is broadly utilized in the first-line treatment of diabetes.

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Circulating endothelial progenitor cells and inflammatory markers in type 1 diabetes after an acute session of aerobic exercise.

Arch Endocrinol Metab

January 2025

Instituto Nacional de Ciência e Tecnologia para Avaliação de Tecnologias em Saúde Hospital de Clínicas de Porto Alegre Porto AlegreRS Brasil Instituto Nacional de Ciência e Tecnologia para Avaliação de Tecnologias em Saúde (IATS) - CNPq/Brasil, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brasil.

Objective: To determine circulating endothelial progenitor cells (EPC) counts and levels of inflammatory markers in individuals with and without type 1 diabetes mellitus (T1DM) in response to an intense aerobic exercise session.

Subjects And Methods: In total, 15 adult men with T1DM and 15 healthy individuals underwent a 30-minute aerobic exercise session on a cycle ergometer at 60% of the peak heart rate. The EPC count (CD45/CD34/KDR), tumor necrosis factor-alpha (TNF-α) and interleukin 6 (IL-6) levels were measured before and 60 minutes after the session.

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