HIF1 α overexpression enhances diabetic wound closure in high glucose and low oxygen conditions by promoting adipose-derived stem cell paracrine function and survival

Adipose-derived stem cell (ADSC) transplantation is a promising strategy to promote wound healing because of the paracrine function of stem cells. However, glucose-associated effects on stem cell paracrine fun...
Source: Stem Cell Research and Therapy - Category: Stem Cells Authors: Tags: Research Source Type: research

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In this study, a rat DFU model was used to simulate the pathophysiology of clinical patients and to investigate the localization of human umbilical cord mesenchymal stem cells (hUC-MSCs) after intravenous transplantation and its role in DFU healing, so as to evaluate the potential of hUC-MSCs in the treatment of DFU. The diabetic rat model was established by streptozotocin injection, which was used to create full-thickness foot dorsal skin wounds to mimic DFU by a 6-mm skin biopsy punch and a Westcott scissor. The hUC-MSCs were transplanted through femoral vein, and the ulcer cicatrization situation and the fate of hUC-MSC...
Source: Acta Biochimica et Biophysica Sinica - Category: Biochemistry Authors: Tags: Acta Biochim Biophys Sin (Shanghai) Source Type: research
AbstractType 1 diabetes mellitus (T1DM) is a chronic metabolic disease caused by the destruction of pancreatic β-cells. Human dental pulp stem cells represent a promising source for cell-based therapies, owing to their easy, minimally invasive surgical access, and high proliferative capacity. It was reported that human dental pulp stem cells can differentiate into a pancreatic cell lineage in vitro; however , few studies have investigated their effects on diabetes. Our study aimed to investigate the therapeutic potential of intravenous and intrapancreatic transplantation of human dental pulp stem cells in a rat model ...
Source: Anatomical Science International - Category: Anatomy Source Type: research
This study provides direct evidence for the contribution of gut microbiota to the cognitive decline during normal aging and suggests that restoring microbiota homeostasis in the elderly may improve cognitive function. On Nutraceutical Senolytics https://www.fightaging.org/archives/2020/05/on-nutraceutical-senolytics/ Nutraceuticals are compounds derived from foods, usually plants. In principle one can find useful therapies in the natural world, taking the approach of identifying interesting molecules and refining them to a greater potency than naturally occurs in order to produce a usefully large therape...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
In this study, we found that older nematodes have higher ROS levels. Interestingly, after hydrogen treatment, the ROS levels were significantly decreased, and hydrogen could significantly extend the lifespans of the N2, sod-3 and sod-5 mutant strains, by approximately 22.7%, 9.5%, and 8.7%, respectively. In addition, aging is regulated by a variety of pathways, such as the insulin signaling pathway, the rapamycin target signaling pathway, and the caloric restriction pathway. However, our results showed that the lifespans of the daf-2 and daf-16 strains, in which these pathways are upregulated, were not affected afte...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
The objective is to start treating chronic diseases from the root and not the symptoms of the disease. As we are starting to enroll patients in "senolytics-clinical trials," it will be imperative to assess if senolysis efficiently targets the primary cause of disease or if it works best in combination with other drugs. Additional basic science research is required to address the fundamental role of senescent cells, especially in the established contexts of disease. Notes on Self-Experimentation with Sex Steroid Ablation for Regrowth of the Thymus https://www.fightaging.org/archives/2020/04/notes-on-se...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
AbstractPurpose of ReviewTo survey current practices in clinical islet transplantation to identify the critical factors for designing a successful implant strategy for islets derived from pluripotent stem cells. Of particular importance is the volume of a therapeutic dose and the host sites capable of housing that volume.Recent FindingsA calculated dose of surviving islets required for normoglycemia in patients is large, though less than the number of islets present in a healthy pancreas. Great strides have been made developing methods for delivery of a large dose of islets that maintain cell viability and potency. Althoug...
Source: Current Transplantation Reports - Category: Transplant Surgery Source Type: research
(Helmholtz Zentrum M ü nchen - German Research Center for Environmental Health) The loss of insulin-secreting beta cells by autoimmune destruction leads to type 1 diabetes. Clinical islet cell transplantation has the potential to cure diabetes, but donor pancreases are rare. In a new study, a group of researchers developed an improved pluripotent stem cell differentiation protocol to generate beta cells in vitro with superior glucose response and insulin secretion. This is a major step towards beta cell replacement therapy.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news
In conclusion, our study demonstrated that Nrf2 deficiency promoted the increasing trend of autophagy during aging in skeletal muscle. Nrf2 deficiency and increasing age may cause excessive autophagy in skeletal muscle, which can be a potential mechanism for the development of sarcopenia. To What Degree is Chondrocyte Hypertrophy in Osteoarthritis Due to Cellular Senescence? https://www.fightaging.org/archives/2020/04/to-what-degree-is-chondrocyte-hypertrophy-in-osteoarthritis-due-to-cellular-senescence/ Senescent cells are large. They do not replicate, that function is disabled, but it is as if they go ...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Authors: Wu Q, Zheng S, Qin Y, Zheng X, Chen H, Yang T, Zhang M Abstract Stem cells (SCs) therapy is a new promising therapeutic modality for type 1 diabetes (T1DM). We performed a systematic review and meta-analysis to evaluate the efficacy and safety of stem cells transplantation (SCT) in patients with T1DM. We searched five literature databases (MEDLINE, EMBASE, Web of Science, WanFang and CENTRAL) up to 31 October 2019. 29 studies (487 patients with T1DM) were included in our meta-analysis. There was no substantial publication bias. Meta-analysis showed the SCT had significant effect to decrease HbA1c (SMD, 1.4...
Source: Endocrine Journal - Category: Endocrinology Tags: Endocr J Source Type: research
Differentiation of insulin-producing pancreatic β cells from induced pluripotent stem cells (iPSCs) derived from patients with diabetes promises to provide autologous cells for diabetes cell replacement therapy. However, current approaches produce patient iPSC-derived β (SC-β) cells with poor function in vitro and in vivo. Here, we used CRISPR-Cas9 to correct a diabetes-causing pathogenic variant in Wolfram syndrome 1 (WFS1) in iPSCs derived from a patient with Wolfram syndrome (WS). After differentiation to β cells with our recent six-stage differentiation strategy, corrected WS SC-β cells perform...
Source: Science Translational Medicine - Category: Biomedical Science Authors: Tags: Research Articles Source Type: research
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