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https://www.readbyqxmd.com/read/29675567/human-urine-derived-stem-cells-play-a-novel-role-in-the-treatment-of-stz-induced-diabetic-mice
#1
Tianxue Zhao, Deng Luo, Yun Sun, Xin Niu, Yang Wang, Chen Wang, Weiping Jia
Human urine-derived stem cells (hUSCs) are a potential stem cell source for cell therapy. However, the effect of hUSCs on glucose metabolism regulation in type 1 diabetes was not clear. Therefore, the aim of the study was to evaluate whether hUSCs have protective effect on streptozotocin (STZ)-induced diabetes. hUSCs were extracted and cultivated with a special culture medium. Flow cytometry analysis was applied to detect cell surface markers. BALB/c male nude mice were either injected with high-dose STZ (HD-STZ) or multiple low-dose STZ (MLD-STZ)...
April 19, 2018: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29673130/effects-of-gip-on-regional-blood-flow-during-normoglycemia-and-hyperglycemia-in-anesthetized-rats
#2
Xiang Gao, Andreas Lindqvist, Monica Sandberg, Leif Groop, Nils Wierup, Leif Jansson
The incretin hormone glucose-dependent insulinotropic polypeptide (GIP) potentiates glucose-stimulated insulin secretion, and affects β-cell turnover. This study aimed at evaluating if some of the beneficial effects of GIP on glucose homeostasis can be explained by modulation of islet blood flow. Anesthetized Sprague-Dawley rats were infused intravenously with different doses of GIP (10, 20, or 60 ng/kg*min) for 30 min. Subsequent organ blood flow measurements were performed with microspheres. In separate animals, islets were perfused ex vivo with GIP (10-6 -10-12  mol/L) during normo- and hyperglycemia and arteriolar responsiveness was recorded...
April 2018: Physiological Reports
https://www.readbyqxmd.com/read/29663489/high-glucose-induced-excessive-reactive-oxygen-species-promote-apoptosis-through-mitochondrial-damage-in-rat-cartilage-endplate-cells
#3
Zengxin Jiang, Wei Lu, Qingmin Zeng, Defang Li, Lei Ding, Jingping Wu
PURPOSE: Diabetes mellitus (DM) is an important factor in intervertebral disc degeneration (IDD). Apoptosis of cartilage endplate (CEP) cells is one of the initiators of IDD. However, the effects of high glucose on CEP cells are still unknown. Therefore, we conducted the present study to evaluate the effects of high glucose on CEP cells and to identify the mechanisms of those effects. METHODS: Rat CEP cells were isolated and cultured in 10% foetal bovine serum (FBS, normal control) or high-glucose medium (10% FBS + 0...
April 16, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29650791/impairments-in-adipose-tissue-microcirculation-in-type-2-diabetes-mellitus-assessed-by-real-time-contrast-enhanced-ultrasound
#4
Donghua Hu, Devika Remash, Ryan D Russell, Timothy Greenaway, Stephen Rattigan, Kathryn A Squibb, Graeme Jones, Dino Premilovac, Stephen M Richards, Michelle A Keske
BACKGROUND: In obesity and type 2 diabetes mellitus (T2D), adipose tissue expansion (because of larger adipocytes) results in reduced microvascular density which is thought to lead to adipocyte hypoxia, inflammation, and reduced nutrient delivery to the adipocyte. Adipose tissue microvascular responses in humans with T2D have not been extensively characterized. Furthermore, it has not been determined whether impaired microvascular responses in human adipose tissue are most closely associated with adiposity, inflammation, or altered metabolism...
April 2018: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29618983/perivascular-adipose-tissue-as-a-relevant-fat-depot-for-cardiovascular-risk-in-obesity
#5
REVIEW
Rafael M Costa, Karla B Neves, Rita C Tostes, Núbia S Lobato
Obesity is associated with increased risk of premature death, morbidity, and mortality from several cardiovascular diseases (CVDs), including stroke, coronary heart disease (CHD), myocardial infarction, and congestive heart failure. However, this is not a straightforward relationship. Although several studies have substantiated that obesity confers an independent and additive risk of all-cause and cardiovascular death, there is significant variability in these associations, with some lean individuals developing diseases and others remaining healthy despite severe obesity, the so-called metabolically healthy obese...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29617812/postruminal-digestion-of-starch-infused-into-the-abomasum-of-heifers-with-or-without-exogenous-amylase-administration
#6
Edwin Westreicher-Kristen, Kristina Robbers, Ralf Blank, Arnulf Tröscher, Uta Dickhoefer, Siegfried Wolffram, Andreas Susenbeth
The effect of an exogenous amylase on postruminal digestion of starch infused into the abomasum of cattle was studied. Four rumen-cannulated heifers were fed 5.5 kg DM/d of a diet without starch, and assigned randomly to a cross-over design. The experiment consisted of two periods lasting 23 d each with 10 d for adaptation to the diet followed by 13 d of abomasal infusion and sample collection. During the first 3 d of each infusion phase, isotonic saline solution was infused (1 L/h) for measurement of baseline values in feces, followed by daily infusions of 880 g DM corn starch (1 kg/10 L water) without or with the addition of 2% of amylase...
April 2, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29617475/ultrasonographic-markers-of-cardiovascular-disease-risk-in-obese-children
#7
Karla Cristina Malta Costa, Luiz Antonio Del Ciampo, Patrícia Silveira Silva, Jailson Costa Lima, Wellington de Paula Martins, Carlos Alberto Nogueira-de-Almeida
OBJECTIVE: To evaluate whether the obesity alters ultrasonographical markers of metabolic and cardiovascular disease risk in children. METHODS: A cross-sectional study evaluated 80 children aged between 6 and 10 years, comparing 40 obese with 40 normal children. The following parameters were assessed: weight; height; body mass index; arterial blood pressure; body fat; basal metabolic rate; HDL-cholesterol, LDL-cholesterol and total cholesterol; fasting insulin and glucose; quantitative insulin sensitivity check index (QUICKI); homeostasis model of assessment - insulin resistance (HOMA-IR); basal diameter of the brachial artery; brachial artery flow mediated dilation (FMD) and of pulsatility index change (PI-C)...
March 29, 2018: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
https://www.readbyqxmd.com/read/29615934/chamazulene-attenuates-ros-levels-in-bovine-aortic-endothelial-cells-exposed-to-high-glucose-concentrations-and-hydrogen-peroxide
#8
Giulia Querio, Susanna Antoniotti, Federica Foglietta, Cinzia M Bertea, Roberto Canaparo, Maria P Gallo, Renzo Levi
Endothelial cells surround the lumen of blood vessels and modulate many physiological processes, including vascular tone, blood fluidity, inflammation, immunity and neovascularization. Many pathological conditions, including hyperglycemia, may alter endothelial function through oxidative stress, leading to impaired nitric oxide bioavailability and to the onset of an inflammatory state. As widely shown in the last decade, dietary intervention could represent a good strategy to control endothelial dysfunction and atherosclerosis...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29605320/symposium-review-amino-acid-uptake-by-the-mammary-glands-where-does-the-control-lie
#9
John P Cant, Julie J M Kim, Scott R L Cieslar, John Doelman
Milk protein yield responses to changes in the profile of essential amino acids absorbed by the gastrointestinal tract or circulating in blood plasma do not follow the classic limiting amino acid response, in part because of an ability of the mammary glands to modify their blood flow rate and net clearance of amino acids out of plasma. The hypothesis that mammary blood flow is locally regulated to maintain ATP balance accounts for observed changes in flow due to postruminal glucose, insulin, and essential amino acid (EAA) infusions...
March 28, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29604956/berberine-ameliorates-diabetic-nephropathy-by-inhibiting-tlr4-nf-%C3%AE%C2%BAb-pathway
#10
Liping Zhu, Jiakai Han, Rongrong Yuan, Lei Xue, Wuyan Pang
BACKGROUND: Diabetic nephropathy (DN) is the leading cause of end-stage renal failure, contributing to severe morbidity and mortality in diabetic patients. Berberine (BBR) has been well characterized to exert renoprotective effects in DN progression. However, the action mechanism of BBR in DN remains to be fully understood. METHODS: The DN rat model was generated by intraperitoneal injection of streptozotocin (STZ, 65 mg/kg body weight) while 30 mM high glucose (HG)-treated podocytes were used as an in vitro DN model...
March 31, 2018: Biological Research
https://www.readbyqxmd.com/read/29604374/insulin-delivery-systems-combined-with-microneedle-technology
#11
Xuan Jin, Dan Dan Zhu, Bo Zhi Chen, Mohammad Ashfaq, Xin Dong Guo
Diabetes, a metabolic disorder of glucose, is a serious chronic disease and an important public health problem. Insulin is one of the hormones for modulating blood glucose level and the products of which is indispensable for most diabetes patients. Introducing microneedles (MNs) to insulin delivery is promising to pave the way for modulating glucose level noninvasively of diabetes patients, as which born to be painless, easy to handle and no need of any power supply. In this work, we review the process of insulin delivery systems (IDSs) based on MN technology in terms of two categories: drug free MNs and drug loaded MNs...
March 28, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29593654/ethnic-disparities-in-endothelial-function-and-its-cardiometabolic-correlates-the-pathobiology-of-prediabetes-in-a-biracial-cohort-study
#12
Ibiye Owei, Nkiru Umekwe, Hanan Mohamed, Sotonte Ebenibo, Jim Wan, Sam Dagogo-Jack
Background: Endothelial function (EF) reflects the balance between vasodilatory and vasoconstrictive factors produced by (or acting on) the innermost lining of blood vessels. Endothelial dysfunction, an imbalance between these factors that favors vasoconstriction, has been associated with increased risk for cardiovascular disease. However, the influence of race/ethnicity and glycemic status on association between EF and cardiovascular risk factors remain to be clarified. Subjects and methods: We assessed EF in relation to glycemia and cardiometabolic profile in African-American (AA) and European-American (EA) offspring of parents with type 2 diabetes (T2D), who are participants in the prospective pathobiology and reversibility of prediabetes in a biracial cohort (PROP-ABC) study...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29593636/combined-treatment-with-dichloroacetic-acid-and-pyruvate-reduces-hippocampal-neuronal-death-after-transient-cerebral-ischemia
#13
Dae Ki Hong, A Ra Kho, Bo Young Choi, Song Hee Lee, Jeong Hyun Jeong, Sang Hwon Lee, Kyoung-Ha Park, Jae-Bong Park, Sang Won Suh
Transient cerebral ischemia (TCI) occurs when blood flow to the brain is ceased or dramatically reduced. TCI causes energy depletion and oxidative stress, which leads to neuronal death and cognitive impairment. Dichloroacetic acid (DCA) acts as an inhibitor of pyruvate dehydrogenase kinase (PDK). Additionally, DCA is known to increase mitochondrial pyruvate uptake and promotes glucose oxidation during glycolysis, thus enhancing pyruvate dehydrogenase (PDH) activity. In this study, we investigated whether the inhibition of PDK activity by DCA, which increases the rate of pyruvate conversion to adenosine triphosphate (ATP), prevents ischemia-induced neuronal death...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29568814/glp-1-and-insulin-recruit-muscle-microvasculature-and-dilate-conduit-artery-individually-but-not-additively-in-healthy-humans
#14
Alvin W K Tan, Sharmila C Subaran, Matthew A Sauder, Weidong Chai, Linda A Jahn, Dale E Fowler, James T Patrie, Kevin W Aylor, Ananda Basu, Zhenqi Liu
Context: Glucagon-like peptide-1 (GLP-1) and insulin increase muscle microvascular perfusion, thereby increasing tissue endothelial surface area and nutrient delivery. Objective: To examine whether GLP-1 and insulin act additively on skeletal and cardiac microvasculature and conduit artery. Design: Healthy adults underwent three study protocols in random order. Setting: Clinical Research Unit at the University of Virginia...
February 1, 2018: Journal of the Endocrine Society
https://www.readbyqxmd.com/read/29568274/transplantation-of-normal-adipose-tissue-improves-blood-flow-and-reduces-inflammation-in-high-fat-fed-mice-with-hindlimb-ischemia
#15
Liyuan Chen, Lin Wang, Yongjie Li, Liqun Wuang, Yaofang Liu, Ningbo Pang, Yulin Luo, Jing He, Liping Zhang, Ni Chen, Rong Li, Jianbo Wu
Background: Fat deposition is associated with peripheral arterial disease. Adipose tissue has recently been implicated in vascular remodeling and angiogenic activity. We hypothesized that the transplantation of adipose tissues from normal mice improves blood flow perfusion and neovascularization in high-fat diet fed mice. Methods: After 14 weeks of high-fat diet (HFD)-fed mice, unilateral hind limb ischemia was performed. Subcutaneous white adipose tissue (WAT) and brown adipose tissue (BAT) fat pads were harvested from normal EGFP mice, and subcutaneously transplanted over the region of the adductor muscles of HFD mice...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29568273/regular-aerobic-resistance-and-cross-training-exercise-prevents-reduced-vascular-function-following-a-high-sugar-or-high-fat-mixed-meal-in-young-healthy-adults
#16
Emon K Das, Pui Y Lai, Austin T Robinson, Joan Pleuss, Mohamed M Ali, Jacob M Haus, David D Gutterman, Shane A Phillips
The postprandial state can negatively influence flow mediated dilation (FMD), a predictor of atherosclerosis and cardiovascular disease. This investigation was designed to determine the effect of regular aerobic and/or resistance exercise on postprandial FMD after a high sugar or high fat mixed meal. Forty-five healthy participants were recruited from one of four groups: lean sedentary (SED), runners, weight lifters, and cross-trainers. Participants were randomly crossed over to a high sugar meal (HSM) and a high fat mixed meal (HFMM; both fat and carbohydrate)...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29565774/muscle-hypertrophy-following-blood-flow-restricted-low-force-isometric-electrical-stimulation-in-rat-tibialis-anterior-role-for-muscle-hypoxia
#17
Toshiaki Nakajima, Seiichiro Koide, Tomohiro Yasuda, Takaaki Hasegawa, Tatsuya Yamasoba, Syotaro Obi, Shigeru Toyoda, Fumitaka Nakamura, Teruo Inoue, David C Poole, Yutaka Kano
Low force exercise training with blood flow restriction (BFR) elicits muscle hypertrophy. We investigated the effects of microvascular hypoxia (i.e., low microvascular O2 partial pressures, PmvO2 ) during contractions on hypertrophic signaling, growth response and key muscle adaptations for increasing exercise capacity. Wistar rats were fitted with a cuff placed around the upper thigh and inflated to restrict limb blood flow. Low force isometric contractions (30 Hz) were evoked via electrical stimulation of the tibialis anterior (TA) nerve...
March 22, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29561214/glucose-transporter-2-mediates-the-hypoglycemia-induced-increase-in-cerebral-blood-flow
#18
Hongxia Lei, Frédéric Preitner, Gwenaël Labouèbe, Rolf Gruetter, Bernard Thorens
Glucose transporter 2 ( Glut2)-positive cells are sparsely distributed in brain and play an important role in the stimulation of glucagon secretion in response to hypoglycemia. We aimed to determine if Glut2-positive cells can influence another response to hypoglycemia, i.e. increased cerebral blood flow (CBF). CBF of adult male mice devoid of Glut2, either globally ( ripglut1:glut2- / - ) or in the nervous system only (NG2KO), and their respective controls were studied under basal glycemia and insulin-induced hypoglycemia using quantitative perfusion magnetic resonance imaging at 9...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29546778/corrigendum
#19
(no author information available yet)
Honkala SM, Johansson J, Motiani KK, et al. Short-term interval training alters brain glucose metabolism in subjects with insulin resistance. J Cereb Blood Flow. Epub ahead of print 29 September 2017. DOI: 10.1177/0271678X17734998. The figures in this article appear in the wrong position. Figure 1 should appear where Figure 2 currently appears, and vice versa. The figure captions are correctly placed.
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29546297/meal-fatty-acids-have-differential-effects-on-postprandial-blood-pressure-and-biomarkers-of-endothelial-function-but-not-vascular-reactivity-in-postmenopausal-women-in-the-randomized-controlled-dietary-intervention-and-vascular-function-divas-2-study
#20
Kumari M Rathnayake, Michelle Weech, Kim G Jackson, Julie A Lovegrove
Background: Elevated postprandial triacylglycerol concentrations, impaired vascular function, and hypertension are important independent cardiovascular disease (CVD) risk factors in women. However, the effects of meal fat composition on postprandial lipemia and vascular function in postmenopausal women are unknown. Objective: This study investigated the impact of sequential meals rich in saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs), or n-6 (ω-6) polyunsaturated fatty acids (PUFAs) on postprandial flow-mediated dilatation (FMD; primary outcome measure), vascular function, and associated CVD risk biomarkers (secondary outcomes) in postmenopausal women...
March 1, 2018: Journal of Nutrition
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