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zebrafish diabetes

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https://www.readbyqxmd.com/read/29034193/comparative-study-of-herbal-plants-on-the-phenolic-and-flavonoid-content-antioxidant-activities-and-toxicity-on-cells-and-zebrafish-embryo
#1
Hassan Fahmi Ismail, Zanariah Hashim, Wong Tet Soon, Nur Syukriah Ab Rahman, Ain Nabihah Zainudin, Fadzilah Adibah Abdul Majid
Natural antioxidants derived from plants have shown a tremendous inhibitory effect on free radicals in actively metabolizing cells. Overproduction of free radicals increases the risk factor of chronic diseases associated with diabetes, cancer, arthritis and cardiovascular disease. Andrographis paniculata, Cinnamon zeylanicum, Curcuma xanthorrhiza, Eugenia polyantha and Orthosiphon stamineus are ethnomedicinal plants used in the Asian region to treat various illnesses from a common fever to metabolic disease...
October 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28986398/inhibition-of-cdk5-promotes-%C3%AE-cell-differentiation-from-ductal-progenitors
#2
Ka-Cheuk Liu, Gunter Leuckx, Daisuke Sakano, Philip A Seymour, Charlotte L Mattsson, Linn Rautio, Willem Staels, Yannick Verdonck, Palle Serup, Shoen Kume, Harry Heimberg, Olov Andersson
Inhibition of notch signalling is known to induce differentiation of endocrine cells in zebrafish and mouse. After performing an unbiased in vivo screen of ∼2200 small molecules in zebrafish we identified an inhibitor of Cdk5 (roscovitine), which potentiated formation of β-cells along the intra-pancreatic duct during concurrent inhibition of notch signalling. We confirmed and characterized the effect with a more selective Cdk5 inhibitor, (R)-DRF053, which specifically increased the number of duct-derived β-cells without affecting their proliferation...
October 6, 2017: Diabetes
https://www.readbyqxmd.com/read/28946120/bisphenol-s-exposure-impairs-glucose-homeostasis-in-male-zebrafish-danio-rerio
#3
Fei Zhao, Guobin Jiang, Penghao Wei, Hongfang Wang, Shaoguo Ru
Bisphenol S (BPS) is a substitute of the plastic additive bisphenol A (BPA). Its concentrations detected in surface waters and urine samples are on the same order of magnitude as BPA. Human exposure to BPA has been implicated in the development of diabetes mellitus; however, whether BPS can disrupt glucose homeostasis and increase blood glucose concentration remains unclear. We extensively investigated the effects of environmentally relevant concentrations of BPS on glucose metabolism in male zebrafish (Danio rerio) and the underlying mechanisms of these effects...
September 22, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28925940/zebrafish-as-a-model-for-the-study-of-microvascular-complications-of-diabetes-and-their-mechanisms
#4
REVIEW
Karl Heckler, Jens Kroll
Diabetes mellitus (DM) is a crucial metabolic disease that leads to severe disorders. These include macrovascular complications such as myocardial infarction, stroke, and peripheral artery disease and microvascular complications including diabetic nephropathy, neuropathy, and retinopathy. Diabetes mellitus, along with its associated organ pathologies, is one of the key problems in today's medicine. Zebrafish is an upcoming disease model organism in diabetes research. Its glucose metabolism and the pathways of reactive metabolite formation are very similar to those of humans...
September 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28924380/intracellular-insulin-and-impaired-autophagy-in-a-zebrafish-model-and-a-cell-model-of-type-2-diabetes
#5
Xiang-Hui Meng, Bo Chen, Jing-Pu Zhang
Type 2 diabetes mellitus is characterized by insulin resistance. However, the complete molecular mechanism remains unclear. In this study, zebrafish were fed a long-term high-fat diet to induce type 2 diabetes, which resulted in a higher body weight, body mass index, more lipid vacuoles in liver, increased insulin transcription level in liver, brain and muscle, and high fasting blood glucose in the high-fat diet zebrafish. Oppositely, the transcription levels of insulin substrate-2 and glucose transporter 2 were significantly decreased, indicating insulin signaling pathway and glucose transport impaired in the insulin-targeting tissues...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28856758/gonadal-soma-controls-ovarian-follicle-proliferation-through-gsdf-in-zebrafish
#6
Yi-Lin Yan, Thomas Desvignes, Ruth Bremiller, Catherine Wilson, Danielle Dillon, Samantha High, Bruce Draper, Charles Loren Buck, John Postlethwait
BACKGROUND: Aberrant signaling between germ cells and somatic cells can lead to reproductive disease and depends on diffusible signals, including transforming growth factor-beta (TGFB) -family proteins. The TGFB-family protein Gsdf (gonadal soma derived factor) controls sex determination in some fish and is a candidate for mediating germ cell/soma signaling. RESULTS: Zebrafish expressed gsdf in somatic cells of bipotential gonads and expression continued in ovarian granulosa cells and testicular Sertoli cells...
August 30, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28851992/tcf7l2-plays-pleiotropic-roles-in-the-control-of-glucose-homeostasis-pancreas-morphology-vascularization-and-regeneration
#7
Nicola Facchinello, Estefania Tarifeño-Saldivia, Enrico Grisan, Marco Schiavone, Margherita Peron, Alessandro Mongera, Olivier Ek, Nicole Schmitner, Dirk Meyer, Bernard Peers, Natascia Tiso, Francesco Argenton
Type 2 diabetes (T2D) is a disease characterized by impaired insulin secretion. The Wnt signaling transcription factor Tcf7l2 is to date the T2D-associated gene with the largest effect on disease susceptibility. However, the mechanisms by which TCF7L2 variants affect insulin release from β-cells are not yet fully understood. By taking advantage of a tcf7l2 zebrafish mutant line, we first show that these animals are characterized by hyperglycemia and impaired islet development. Moreover, we demonstrate that the zebrafish tcf7l2 gene is highly expressed in the exocrine pancreas, suggesting potential bystander effects on β-cell growth, differentiation and regeneration...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28837703/combinatorial-effects-of-zinc-deficiency-and-arsenic-exposure-on-zebrafish-danio-rerio-development
#8
Laura M Beaver, Lisa Truong, Carrie L Barton, Tyler T Chase, Greg D Gonnerman, Carmen P Wong, Robert L Tanguay, Emily Ho
Zinc deficiency and chronic low level exposures to inorganic arsenic in drinking water are both significant public health concerns that affect millions of people including pregnant women. These two conditions can co-exist in the human population but little is known about their interaction, and in particular, whether zinc deficiency sensitizes individuals to arsenic exposure and toxicity, especially during critical windows of development. To address this, we utilized the Danio rerio (zebrafish) model to test the hypothesis that parental zinc deficiency sensitizes the developing embryo to low-concentration arsenic toxicity, leading to altered developmental outcomes...
2017: PloS One
https://www.readbyqxmd.com/read/28836097/animal-models-of-diabetic-retinopathy
#9
REVIEW
Ana Maria Olivares, Kristen Althoff, Gloria Fanghua Chen, Siqi Wu, Margaux A Morrisson, Margaret M DeAngelis, Neena Haider
PURPOSE OF REVIEW: Diabetic retinopathy (DR) is one of the most common complications associated with chronic hyperglycemia seen in patients with diabetes mellitus. While many facets of DR are still not fully understood, animal studies have contributed significantly to understanding the etiology and progression of human DR. This review provides a comprehensive discussion of the induced and genetic DR models in different species and the advantages and disadvantages of each model. RECENT FINDINGS: Rodents are the most commonly used models, though dogs develop the most similar morphological retinal lesions as those seen in humans, and pigs and zebrafish have similar vasculature and retinal structures to humans...
August 24, 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28801532/activation-of-nkx2-5-calr-p53-signaling-pathway-by-hyperglycemia-induces-cardiac-remodeling-and-dysfunction-in-adult-zebrafish
#10
Sun Yanyi, Wang Qiuyun, Fang Yuehua, Wu Chunfang, Lu Guoping, Chen Zhenyue
Hyperglycemia is an independent risk factor for diabetic cardiomyopathy in humans; however, the underlying mechanisms have not been thoroughly elucidated. Zebrafish (Danio rerio) was used in this study as a novel vertebrate model to explore the signaling pathways of human adult cardiomyopathy. Hyperglycemia was induced by alternately immersing adult zebrafish in a glucose solution or water. The hyperglycemic fish gradually exhibited some hallmarks of cardiomyopathy such as myocardial hypertrophy and apoptosis, myofibril loss, fetal gene reactivation, and severe arrhythmia...
August 11, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28792859/elucidating-the-role-of-plexin-d1-in-body-fat-distribution-and-susceptibility-to-metabolic-disease-using-a-zebrafish-model-system
#11
James E N Minchin, John F Rawls
Non-communicable diseases (NCDs) such as cardiovascular disease, diabetes and cancer were responsible for 68% of all deaths worldwide in 2012. The regional distribution of lipid deposited within adipose tissue (AT) - so called body fat distribution (BFD) - is a strong risk factor for NCDs. BFD is highly heritable; however, the genetic basis of BFD is almost entirely unknown. Genome-wide association studies have identified several loci associated with BFD, including at Plexin D1 (PLXND1) - a gene known to modulate angiogenesis...
July 27, 2017: Adipocyte
https://www.readbyqxmd.com/read/28719799/mesencephalic-astrocyte-derived-neurotrophic-factor-manf-a-new-player-in-endoplasmic-reticulum-diseases-structure-biology-and-therapeutic-roles
#12
REVIEW
Yeawon Kim, Sun-Ji Park, Ying Maggie Chen
Mesencephalic astrocyte-derived neurotrophic factor (MANF), a newly identified 18-kDa soluble protein, localizes to the luminal endoplasmic reticulum (ER), whose stress can stimulate MANF expression and secretion. In Drosophila and zebrafish, MANF regulates dopaminergic neuron development. In contrast, in mice, MANF deficiency leads to diabetes and activation of the unfolded protein response. Recent studies in rodent models have demonstrated that MANF mitigates diabetes, exerts neurotrophic function in neurodegenerative disease, protects cardiomyocytes and neurons in myocardial infarction and cerebral ischemia, respectively, and promotes immune cell phenotype switch from proinflammatory macrophages to prorepair anti-inflammatory macrophages...
October 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28686680/resveratrol-ameliorates-diet-induced-dysregulation-of-lipid-metabolism-in-zebrafish-danio-rerio
#13
Gai Ran, Li Ying, Lin Li, Qiaoqiao Yan, Weijie Yi, Chenjiang Ying, Hongmei Wu, Xiaolei Ye
Defective lipid metabolism is associated with increased risk of various chronic diseases, such as obesity, cardiovascular diseases, and diabetes. Resveratrol (RSV), a natural polyphenol, has been shown the potential of ameliorating disregulations of lipid metabolism. The objective of this study was to investigate the effects of feed intake and RSV on lipid metabolism in zebrafish (Danio rerio). The adult males were randomly allocated to 6 groups: control (Con, 8 mg cysts/fish/day), control with 20 μmol/L RSV (Con+RSV), calorie restriction (CR, 5 mg cysts/fish/day), calorie restriction with RSV (CR+RSV), overfeed (OF, 60 mg cysts/fish/day), and overfeed with RSV (OF+RSV) groups...
2017: PloS One
https://www.readbyqxmd.com/read/28671660/acute-and-chronic-models-of-hyperglycemia-in-zebrafish-a-method-to-assess-the-impact-of-hyperglycemia-on-neurogenesis-and-the-biodistribution-of-radiolabeled-molecules
#14
Anne-Claire Dorsemans, Christian Lefebvre d'Hellencourt, Imade Ait-Arsa, Emmanuelle Jestin, Olivier Meilhac, Nicolas Diotel
Hyperglycemia is a major health issue that leads to cardiovascular and cerebral dysfunction. For instance, it is associated with increased neurological problems after stroke and is shown to impair neurogenic processes. Interestingly, the adult zebrafish has recently emerged as a relevant and useful model to mimic hyperglycemia/diabetes and to investigate constitutive and regenerative neurogenesis. This work provides methods to develop zebrafish models of hyperglycemia to explore the impact of hyperglycemia on brain cell proliferation under homeostatic and brain repair conditions...
June 26, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28671593/high-consumption-of-iron-exacerbates-hyperlipidemia-atherosclerosis-and-female-sterility-in-zebrafish-via-acceleration-of-glycation-and-degradation-of-serum-lipoproteins
#15
So-Hee Kim, Dhananjay Yadav, Suk-Jeong Kim, Jae-Ryong Kim, Kyung-Hyun Cho
Elevated serum iron level is linked with an increased risk of diabetes and atherosclerosis. However, the pathological mechanism by which iron affects serum lipoprotein levels is unknown. To elucidate the mechanism, a high dose of ferrous ion was applied (final 60 µM, 120 µM) to human serum lipoproteins, macrophages, and human dermal fibroblast (HDF) cells. Iron-treated lipoproteins showed loss of antioxidant ability along with protein degradation and multimerization, especially co-treatment with fructose (final 10 mM)...
July 2, 2017: Nutrients
https://www.readbyqxmd.com/read/28591638/interrupted-glucagon-signaling-reveals-hepatic-%C3%AE-cell-axis-and-role-for-l-glutamine-in-%C3%AE-cell-proliferation
#16
E Danielle Dean, Mingyu Li, Nripesh Prasad, Scott N Wisniewski, Alison Von Deylen, Jason Spaeth, Lisette Maddison, Anthony Botros, Leslie R Sedgeman, Nadejda Bozadjieva, Olga Ilkayeva, Anastasia Coldren, Greg Poffenberger, Alena Shostak, Michael C Semich, Kristie I Aamodt, Neil Phillips, Hai Yan, Ernesto Bernal-Mizrachi, Jackie D Corbin, Kasey C Vickers, Shawn E Levy, Chunhua Dai, Christopher Newgard, Wei Gu, Roland Stein, Wenbiao Chen, Alvin C Powers
Decreasing glucagon action lowers the blood glucose and may be useful therapeutically for diabetes. However, interrupted glucagon signaling leads to α cell proliferation. To identify postulated hepatic-derived circulating factor(s) responsible for α cell proliferation, we used transcriptomics/proteomics/metabolomics in three models of interrupted glucagon signaling and found that proliferation of mouse, zebrafish, and human α cells was mTOR and FoxP transcription factor dependent. Changes in hepatic amino acid (AA) catabolism gene expression predicted the observed increase in circulating AAs...
June 6, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28575319/translational-research-in-the-nonhuman-primate-model-of-tuberculosis
#17
Taylor W Foreman, Smriti Mehra, Andrew A Lackner, Deepak Kaushal
Infection with Mycobacterium tuberculosis predominantly establishes subclinical latent infection over the lifetime of an individual, with a fraction of infected individuals rapidly progressing to active disease. The immune control in latent infection can be perturbed by comorbidities such as diabetes mellitus, obesity, smoking, and coinfection with helminthes or HIV. Modeling the varying aspects of natural infection remains incomplete when using zebrafish and mice. However, the nonhuman primate model of tuberculosis offers a unique and accurate model to investigate host responses to infection, test novel therapeutics, and thoroughly assess preclinical vaccine candidates...
May 31, 2017: ILAR Journal
https://www.readbyqxmd.com/read/28547797/vitamin-d-receptor-agonists-regulate-ocular-developmental-angiogenesis-and-modulate-expression-of-dre-mir-21-and-vegf
#18
Stephanie L Merrigan, Breandán N Kennedy
BACKGROUND AND PURPOSE: Pathological growth of ocular vasculature networks can underpin visual impairment in neovascular age-related macular degeneration, proliferative diabetic retinopathy and retinopathy of prematurity. Our aim was to uncover novel pharmacological regulators of ocular angiogenesis by phenotype-based screening in zebrafish. EXPERIMENTAL APPROACH: A bioactive chemical library of 465 drugs was screened to identify small molecule inhibitors of ocular hyaloid vasculature (HV) angiogenesis in zebrafish larvae...
August 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28469250/development-of-a-novel-zebrafish-model-for-type-2-diabetes-mellitus
#19
Liqing Zang, Yasuhito Shimada, Norihiro Nishimura
Obesity is a major cause of type 2 diabetes mellitus (T2DM) in mammals. We have previously established a zebrafish model of diet-induced obesity (DIO zebrafish) by overfeeding Artemia. Here we created DIO zebrafish using a different method to induce T2DM. Zebrafish were overfed a commercially available fish food using an automated feeding system. We monitored the fasting blood glucose levels in the normal-fed group (one feed/day) and overfed group (six feeds/day) over an 8-week period. The fasting blood glucose level was significantly increased in DIO zebrafish compared with that of normal-fed zebrafish...
May 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28439518/diabetes-adult-neurogenesis-and-brain-remodeling-new-insights-from-rodent-and-zebrafish-models
#20
REVIEW
Anne-Claire Dorsemans, David Couret, Anaïs Hoarau, Olivier Meilhac, Christian Lefebvre d'Hellencourt, Nicolas Diotel
The prevalence of diabetes rapidly increased during the last decades in association with important changes in lifestyle. Diabetes and hyperglycemia are well-known for inducing deleterious effects on physiologic processes, increasing for instance cardiovascular diseases, nephropathy, retinopathy and foot ulceration. Interestingly, diabetes also impairs brain morphology and functions such as (1) decreased neurogenesis (proliferation, differentiation and cell survival), (2) decreased brain volumes, (3) increased blood-brain barrier leakage, (4) increased cognitive impairments, as well as (5) increased stroke incidence and worse neurologic outcomes following stroke...
2017: Neurogenesis (Austin, Tex.)
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