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Insulin regeneration

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https://www.readbyqxmd.com/read/29776414/glp-i-secretion-in-healthy-and-diabetic-wistar-rats-in-response-to-aqueous-extract-of-momordica-charantia
#1
Gulzar Ahmad Bhat, Haseeb A Khan, Abdullah S Alhomida, Poonam Sharma, Rambir Singh, Bilal Ahmad Paray
BACKGROUND: Diabetes mellitus is one of the major global health disorders increasing at an alarming rate in both developed and developing countries. The objective of this study was to assess the effect of aqueous extract of Momordica charantia (AEMC) on fasting blood glucose (FBG), tissue glycogen, glycosylated haemoglobin, plasma concentrations of insulin and GLP-1 hormone (glucagon-like peptide 1) in healthy and diabetic wistar rats. METHODS: Male Wistar rats (both normal and diabetic) were treated with AEMC by gavaging (300 mg/kg body wt/day for 28 days)...
May 18, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29775636/epithelial-proliferation-in-inflammatory-skin-disease-is-regulated-by-ttc7-in-fibroblasts-and-lymphocytes
#2
Ursina Nüesch, Andrea A Mauracher, Lennart Opitz, Benjamin Volkmer, Katarzyna Michalak-Mićka, Jivko Kamarachev, Tom Hartwig, Ernst Reichmann, Burkhard Becher, Stefano Vavassori, Jana Pachlopnik Schmid
BACKGROUND: Mutations in tetratricopeptide repeat domain 7A (TTC7A) and its mouse orthologue Ttc7 result in a multisystemic disease, mostly affecting epithelial barriers and the immune system. Despite successful hematopoietic stem cell transplantation, ongoing progression of gastrointestinal manifestations can be life-threatening in TTC7A-deficient patients. OBJECTIVE: To identify whether TTC7A mutations dysregulate epithelial cells only, or whether a cell-intrinsic defect in lymphocytes or other cells contributes to disease manifestations...
May 15, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29771832/growth-factors-release-from-concentrated-growth-factors-effect-of-%C3%AE-tricalcium-phosphate-addition
#3
Veronica Bonazza, Christopher Hajistilly, Dinker Patel, Jatan Patel, Rita Woo, Marco Angelo Cocchi, Barbara Buffoli, Davide Lancini, Ezio Gheno, Rita Rezzani, Sadia Jahanzeb, Adrian Hunnisett, Maher Almasri, Alberta Greco Lucchina, Matteo Brucoli, Carmen Mortellaro, Luigi Fabrizio Rodella
BACKGROUND: Platelet concentrates represent a new approach to improve tissue regeneration and can be used alone or together with autogenous bone, recombinant human growth factors, and/or other biomaterials, to enhance tissue regeneration. Among platelet concentrates, concentrated growth factors (CGFs) exhibit an interesting clinical and biotechnological application potential. OBJECTIVE: The aim of this study was to evaluate the in vitro release of 4 growth factors (bone morphogenetic proteins [BMP] -2, BMP-7, transforming growth factor [TGF] -β1, and insulin-like growth factor [IGF] -1) by the enzyme-linked immunosorbent assay (ELISA) technique, in CGFs mixed or not with β-tricalcium phosphate (β-TCP), using or not the Round-up device, at different times...
May 15, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29770834/advances-in-drug-discovery-for-human-beta-cell-regeneration
#4
REVIEW
Esra Karakose, Courtney Ackeifi, Peng Wang, Andrew F Stewart
The numbers of insulin-secreting pancreatic beta cells are reduced in people with type 1 and type 2 diabetes. Driving beta cell regeneration in the pancreases of people with diabetes would be an attractive approach to reversing diabetes. While adult human beta cells have long been believed to be terminally differentiated and, therefore, irreversibly quiescent, it has become clear over recent years that this is not true. More specifically, both candidate and unbiased high-throughput screen approaches have revealed several classes of molecules that are clearly able to induce human beta cell proliferation...
May 16, 2018: Diabetologia
https://www.readbyqxmd.com/read/29769672/pancreas-regeneration
#5
REVIEW
Qiao Zhou, Douglas A Melton
The pancreas is made from two distinct components: the exocrine pancreas, a reservoir of digestive enzymes, and the endocrine islets, the source of the vital metabolic hormone insulin. Human islets possess limited regenerative ability; loss of islet β-cells in diseases such as type 1 diabetes requires therapeutic intervention. The leading strategy for restoration of β-cell mass is through the generation and transplantation of new β-cells derived from human pluripotent stem cells. Other approaches include stimulating endogenous β-cell proliferation, reprogramming non-β-cells to β-like cells, and harvesting islets from genetically engineered animals...
May 2018: Nature
https://www.readbyqxmd.com/read/29768519/influence-of-growth-hormone-replacement-on-neurological-and-psychomotor-development-case-report
#6
Felipe Motta, Adriana Pasmanik Eisencraft, Lindiane Gomes Crisostomo
The height response to the use of growth hormone in short height cases has already been confirmed in the literature. The influence of the insulin-like growth factor 1 (GH-IGF1) axis components on development, function, regeneration, neuroprotection, cognition, and motor functions has been evaluated in experimental studies and in adults with central nervous system lesions. However, there is still little research on the clinical impact of hormone replacement on neurological and psychomotor development. This report presents the case of a patient with excellent weight-height recovery and, even more surprisingly, neurological and psychomotor development in response to use of growth hormone...
May 14, 2018: Einstein
https://www.readbyqxmd.com/read/29752955/skeletal-muscle-specific-sidt2-knockout-in-mice-induced-muscular-dystrophy-like-phenotype
#7
Huan Liu, Wenjun Jiang, Xueru Chen, Guoying Chang, Lei Zhao, Xihua Li, Huiwen Zhang
BACKGROUND: Sidt2 is an integral lysosomal membrane protein. Previously, we generated a Sidt2 global knockout mouse and found impaired insulin secretion, along with skeletal muscle pathology. METHODS: A mouse model with a muscle-specific knockout of the Sidt2 gene (Sidt2f/f Cre) had been generated, to which extensive morphologic study as well as functional study was applied to investigate the direct role of Sidt2 on skeletal muscle tissue in vivo. Secondly, the autophagy-lysosomal pathway was examined by Western blot and immunostaining...
May 9, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29750992/transcriptome-analysis-of-dorsal-root-ganglia-s-diabetic-neuropathy-reveals-mechanisms-involved-in-pain-and-regeneration
#8
Maria Carolina Pedro Athie, Andre Schwambach Vieira, Juliana Maia Teixeira, Gilson Gonçalves Dos Santos, Elayne Vieira Dias, Claudia Herrera Tambeli, Cesar Renato Sartori, Carlos A Parada
Peripheral diabetic neuropathy (DN) manifests in nearly 60% of diabetic patients, being pain its most debilitating symptom. Although electrophysiological and morphological aspects are well described, little is known about its development and progression, undermining effective therapies. Hyperglycemia and insulin signaling impairment are considered the triggering events of oxidative stress observed in the dying nerves, however there are still many gaps in the knowledge of intracellular plastic changes it generates...
May 8, 2018: Life Sciences
https://www.readbyqxmd.com/read/29749986/-urtica-dioica-distillate-regenerates-pancreatic-beta-cells-in-streptozotocin-induced-diabetic-rats
#9
Ali Gohari, Ali Noorafshan, Masoumeh Akmali, Fahimeh Zamani-Garmsiri, Atefeh Seghatoleslam
Background: Urtica dioica is known as an anti-hyperglycemic plant. Urtica dioica distillate (UD) is a traditional Iranian drink, locally known as "aragh gazaneh". In spite of its widespread consumption in Iran, according to traditional Iranian medicine, there is no scientific report on the usefulness of UD for diabetic patients. This survey was designed to evaluate its protective effects for the recovery from diabetes by determining the serum insulin, blood glucose, volume of pancreatic islets, and the number and volume of β-cells in diabetic rats...
March 2018: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29746517/combined-treatment-with-electrical-stimulation-and-insulin-like-growth-factor-1-promotes-bone-regeneration-in-vitro
#10
Zhiping Qi, Peng Xia, Su Pan, Shuang Zheng, Chuan Fu, Yuxin Chang, Yue Ma, Jincheng Wang, Xiaoyu Yang
Electrical stimulation (ES) and insulin-like growth factor-1 (IGF-1) are widely used in bone regeneration because of their osteogenic activity. However, the combined effects of ES and supplemental IGF-1 on the whole bone formation process remain unclear. In this study, fluorescence staining and an MTT assay were first utilized to observe the influence of ES and IGF-1 on MC3T3-E1 cell proliferation and adhesion in vitro. Subsequently, osteogenic differentiation was evaluated by the alkaline phosphatase activity (ALP) and the expression of osteogenic marker genes...
2018: PloS One
https://www.readbyqxmd.com/read/29740270/therapeutic-effect-of-platelet-rich-plasma-in-rat-spinal-cord-injuries
#11
Nan-Fu Chen, Chun-Sung Sung, Zhi-Hong Wen, Chun-Hong Chen, Chien-Wei Feng, Han-Chun Hung, San-Nan Yang, Kuan-Hao Tsui, Wu-Fu Chen
Platelet-rich plasma (PRP) is prepared by centrifuging fresh blood in an anticoagulant state, and harvesting the platelet-rich portion or condensing platelets. Studies have consistently demonstrated that PRP concentrates are an abundant source of growth factors, such as platelet-derived growth factor (PDGF), transforming growth factor β (TGF-β), insulin-like growth factor 1 (IGF-1), and epithelial growth factor (EGF). The complex mechanisms underlying spinal cord injury (SCI) diminish intrinsic repair and neuronal regeneration...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29736712/cell-based-methods-to-identify-inducers-of-human-pancreatic-beta-cell-proliferation
#12
Courtney A Ackeifi, Ethan A Swartz, Peng Wang
Diabetes is the result of the insufficiency or dysfunction of pancreatic beta cells alone or in combination with insulin resistance. The replacement or regeneration of beta cells can effectively reverse diabetes in humans and rodents. Therefore, the identification of novel small molecules that promote pancreatic beta-cell proliferation is an attractive approach for diabetic therapy. While numerous hormones, small molecules, and growth factors are able to drive rodent beta cells to replicate, only a few small molecules have demonstrated the ability to stimulate human beta-cell proliferation...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29735928/adiponectin-signaling-pathways-in-liver-diseases
#13
REVIEW
Tania Gamberi, Francesca Magherini, Alessandra Modesti, Tania Fiaschi
In the liver, adiponectin regulates both glucose and lipid metabolism and exerts an insulin-sensitizing effect. The binding of adiponectin with its specific receptors induces the activation of a proper signaling cascade that becomes altered in liver pathologies. This review describes the different signaling pathways in healthy and diseased hepatocytes, also highlighting the beneficial role of adiponectin in autophagy activation and hepatic regeneration.
May 7, 2018: Biomedicines
https://www.readbyqxmd.com/read/29735923/the-spleen-as-an-optimal-site-for-islet-transplantation-and-a-source-of-mesenchymal-stem-cells
#14
REVIEW
Naoaki Sakata, Gumpei Yoshimatsu, Shohta Kodama
This review demonstrates the unique potential of the spleen as an optimal site for islet transplantation and as a source of mesenchymal stem cells. Islet transplantation is a cellular replacement therapy used to treat severe diabetes mellitus; however, its clinical outcome is currently unsatisfactory. Selection of the most appropriate transplantation site is a major factor affecting the clinical success of this therapy. The spleen has long been studied as a candidate site for islet transplantation. Its advantages include physiological insulin drainage and regulation of immunity, and it has recently also been shown to contribute to the regeneration of transplanted islets...
May 7, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29732558/a-novel-cell-permeable-collagen-based-membrane-promotes-fibroblast-migration
#15
R Sadeghi, P Mahdavi, W S Lee, B Quan, E Sone, B Ganss, C A McCulloch
BACKGROUND AND OBJECTIVE: Growth factors are frequently incorporated into scaffolds to promote periodontal regeneration but many currently used scaffolds do not encourage cell migration towards the dentogingival junction. We examined the proliferation and migration of human gingival fibroblasts in a novel, physically robust, collagen-Vicryl™ membrane loaded with fibronectin (FN) and/or insulin-like growth factor (IGF-I). Biocompatibility of the membranes was evaluated in rat dorsal skin...
May 6, 2018: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29731442/effect-of-aerobic-exercise-combined-with-ginkgo-polysaccharide-on-weight-blood-glucose-and-glycosylated-serum-protein-in-diabetic-rats
#16
Rongkun Zhu, Jun Xie
Streptozotocin copied diabetic rats model were studied through aerobic exercise combined with ginkgo polysaccharide. Aimed to offering the updating experimental basis to prevent diabetic through aerobic exercise combined with ginkgo polysaccharide, the effect of aerobic exercise combined with ginkgo polysaccharide were discussed on the weight, blood glucose, glucosylated serum protein and the secretion ability of islet β cells, oral glucose tolerance test, islet cell pathological morophological changes and positive expression of Bax and Bcl-2...
May 2018: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29715504/the-biology-and-evolution-of-the-dilp8-lgr3-pathway-a-relaxin-like-pathway-coupling-tissue-growth-and-developmental-timing-control
#17
REVIEW
Alisson M Gontijo, Andres Garelli
Many insects, like cockroaches, moths, and flies, can regenerate tissues by extending the growth-competent phases of their life cycle. The molecular and cellular players mediating this coordination between tissue growth and developmental timing have been recently discovered in Drosophila. The insulin/relaxin-like peptide, Dilp8, was identified as a factor communicating abnormal growth status of Drosophila larval imaginal discs to the neuroendocrine centers that control the timing of the onset of metamorphosis...
April 28, 2018: Mechanisms of Development
https://www.readbyqxmd.com/read/29713178/safety-study-is-there-a-pathologic-igf-1-pdgf-and-tgf-%C3%AE-cytokine-expression-caused-by-adjunct-bmp-7-in-tibial-and-femoral-non-union-therapy
#18
Christian Fischer, Christian Reiner, Gerhard Schmidmaier, Julian Doll, Christopher Child, Paul Alfred Grützner, Bahram Biglari, Sonja Boxriker, Arash Moghaddam
Background: In this prospective safety study, we investigated if the characteristic cytokine expression during bone regeneration is manipulated by the local application of bone morphogenetic protein-7 (BMP-7) in non-union surgery. Therefore, the levels of insulin like growth factor 1 (IGF-1), platelet-derived growth factor AB (PDGF-AB) and transforming growth factor beta (TGF-β) were compared between patients with the gold standard use of autologous bone graft (ABG) and those with additional application of BMP-7 as part of the diamond concept...
2018: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/29707538/insulin-like-growth-factor-axis-expression-in-dental-pulp-cells-derived-from-carious-teeth
#19
Hanaa Esa Alkharobi, Hasanain Al-Khafaji, James Beattie, Deirdre Ann Devine, Reem El-Gendy
The insulin-like growth factor (IGF) axis plays an important role in dental tissue regeneration and most components of this axis are expressed in human dental pulp cells (DPCs). In our previous study, we analyzed IGF axis gene expression in DPCs and demonstrated a novel role of IGF binding protein (IGFBP)-2 and -3 in coordinating mineralized matrix formation in differentiating DPCs. A more recent study from our laboratory partially characterized dental pulp stem cells from teeth with superficial caries (cDPCs) and showed that their potential to differentiate odontoblasts and/or into osteoblasts is enhanced by exposure to the mild inflammatory conditions characteristic of superficial caries...
2018: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29694509/beetle-ulomoides-dermestoides-fat-improves-diabetes-effect-on-liver-and-pancreatic-architecture-and-on-ppar%C3%AE-expression
#20
E I Jasso-Villagomez, M Garcia-Lorenzana, J C Almanza-Perez, M A Fortis-Barrera, G Blancas-Flores, R Roman-Ramos, L A Prado-Barragan, F J Alarcon-Aguilar
Ulomoides dermestoides is a beetle traditionally consumed to treat diabetes. In this study, we performed a composition analysis of U. dermestoides to obtain the principal fractions, which were used to assess the effect on glycemia, liver and pancreatic architecture, and PPARγ and GLUT4 expression. Normal mice and alloxan-induced diabetic mice were administered fractions of chitin, protein or fat, and the acute hypoglycemic effect was evaluated. A subacute study involving daily administration of these fractions to diabetic mice was also performed over 30 days, after which the liver and pancreas were processed by conventional histological techniques and stained with hematoxylin and eosin to evaluate morphological changes...
2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
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