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https://www.readbyqxmd.com/read/29029225/glucocorticoid-signaling-in-health-and-disease-insights-from-tissue-specific-gr-knockout-mice
#1
Shannon Whirledge, Donald B DeFranco
Glucocorticoids are adrenally produced hormones critically involved in development, general physiology, and control of inflammation. Since their discovery, glucocorticoids have been widely utilized to treat a variety of inflammatory conditions. However, high doses or prolonged use leads to a number of side-effects throughout the body, which preclude their clinical utility. The primary actions of glucocorticoids are mediated by the glucocorticoid receptor (GR), a transcription factor that regulates many complex signaling pathways...
October 5, 2017: Endocrinology
https://www.readbyqxmd.com/read/29029190/pharmacokinetics-of-igf-i-in-papp-a2-deficient-patients-growth-response-and-effects-on-glucose-and-bone-density
#2
Catalina Cabrera-Salcedo, Tomoyuki Mizuno, Leah Tyzinski, Melissa Andrew, Alexander A Vinks, Jan Frystyk, Halley Wasserman, Catherine M Gordon, Vivian Hwa, Philippe Backeljauw, Andrew Dauber
Context: PAPP-A2 cleaves IGFBP-3 and -5 releasing free IGF-I. Homozygous mutations in PAPP-A2 result in growth failure with elevated total but low free IGF-I. Objective: To determine the 24-hour pharmacokinetic profile of free and total IGF-I after a dose of rhIGF-I. We describe the growth response and effects on glucose metabolism and bone mineral density (BMD) after one year of rhIGF-I therapy. Design and patients: Three affected siblings, their heterozygous parents, and two healthy controls participated...
September 28, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29029184/low-plasma-adiponectin-concentrations-predict-increases-in-visceral-adiposity-and-insulin-resistance
#3
Seung Jin Han, Edward J Boyko, Wilfred Y Fujimoto, Steven E Kahn, Donna L Leonetti
Context: Plasma adiponectin concentration has been shown to be inversely associated with body mass index (BMI) and insulin resistance in cross-sectional research. However, it is unclear whether adiponectin predicts future body composition and insulin resistance. Objective: To investigate the potential relationship between adiponectin concentration and future regional body fat distribution and insulin resistance. Design and Setting: Community-based prospective cohort study with 5 years of follow-up...
September 28, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29029116/upregulation-of-irs1-enhances-igf1-response-in-y537s-and-d538g-esr1-mutant-breast-cancer-cells
#4
Zheqi Li, Kevin M Levine, Amir Bahreini, Peilu Wang, David Chu, Ben Ho Park, Steffi Oesterreich, Adrian V Lee
Increased evidence suggests that somatic mutations in the ligand binding domain of estrogen receptor (ERα/ESR1) are critical mediators of endocrine-resistant breast cancer progression. Insulin-like growth factor-1 (IGF1) is an essential regulator of breast development and tumorigenesis, and also has a role in endocrine resistance. A recent study showed enhanced crosstalk between IGF1 and ERα in ESR1 mutant cells, but detailed mechanisms are incompletely understood. Using genome-edited MCF-7 and T47D cell lines harboring Y537S and D538G ESR1 mutations, we characterized altered IGF1 signaling...
September 27, 2017: Endocrinology
https://www.readbyqxmd.com/read/29029082/decreased-homocysteine-trans-sulfuration-in-hypertension-with-hyperhomocysteinemia-relationship-with-insulin-resistance
#5
Paolo Tessari, Monica Vettore, Lucia Puricelli, Diego Cecchet, Anna Coracina, Edward Kivanuka
Context: Homocysteine is an independent cardiovascular risk factor and is increased in essential hypertension. Insulin stimulates homocysteine catabolism in healthy individuals. However, the mechanisms of hyperhomocysteinemia and its relationship with insulin resistance in essential hypertension are unknown. Objective: To investigate whole-body methionine and homocysteine kinetics, and the effects of insulin, in essential hypertension. Design & Setting: Eight hypertensive male subjects, and six male normotensive controls, were infused with L-[methyl-2H3,1-13C]methionine for 6 hrs...
September 29, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29029022/functional-characterization-of-microrna-27a-3p-expression-in-human-polycystic-ovary-syndrome
#6
Mingming Wang, Jing Sun, Bo Xu, Marcin Chrusciel, Jun Gao, Maciei Bazert, Joanna Stelmaszewska, Yunyun Xu, Hongwen Zhang, Leszek Pawelczyk, Fei Sun, Nafis Rahman, Slawomir Wolczynski, Suk Ying Tsang, Xiangdong Li
The goal of this study was to characterize the function of microRNA-27a-3p (miR-27a-3p) in polycystic ovary syndrome (PCOS). MiR-27a-3p expression was analyzed in excised granulosa cells (GCs) from 21 PCOS and 12 normal patients undergoing IVF cycle treatments, and in 17 non-treated cuneiform ovarian resection PCOS samples and 13 control ovarian samples-from non-PCOS patients. We found that the expression of miR-27a-3p was significantly increased in both excised GCs and the ovaries of PCOS patients compared to the controls...
September 29, 2017: Endocrinology
https://www.readbyqxmd.com/read/29028997/serum-quantitative-proteomic-analysis-reveals-soluble-egfr-to-be-a-marker-of-insulin-resistance-in-male-mice-and-humans
#7
Mayu Kyohara, Jun Shirakawa, Tomoko Okuyama, Ayuko Kimura, Yu Togashi, Kazuki Tajima, Hisashi Hirano, Yasuo Terauchi
To identify circulating factors as candidates involved in type 2 diabetes (T2DM), we conducted two different quantitative proteomic analyses: 1) db/db mouse sera were compared with db/+ mouse sera obtained at 4, 8, 12, and 24 weeks of age, and 2) db/db mouse sera from animals treated with liraglutide were compared with sera from animals without liraglutide treatment. 20 and eight proteins were differentially expressed in db/db mouse sera in the first experiment and in db/db mouse sera after liraglutide treatment in the second experiment, respectively...
October 5, 2017: Endocrinology
https://www.readbyqxmd.com/read/29028831/short-term-vitamin-e-treatment-impairs-reactive-oxygen-species-signaling-required-for-adipose-tissue-expansion-resulting-in-fatty-liver-and-insulin-resistance-in-obese-mice
#8
Martin Alcala, Maria Calderon-Dominguez, Dolors Serra, Laura Herrero, Maria P Ramos, Marta Viana
OBJECTIVES: The use of antioxidant therapy in the treatment of oxidative stress-related diseases such as cardiovascular disease, diabetes or obesity remains controversial. Our aim is to demonstrate that antioxidant supplementation may promote negative effects if used before the establishment of oxidative stress due to a reduced ROS generation under physiological levels, in a mice model of obesity. METHODS: C57BL/6J mice were fed with a high-fat diet for 14 weeks, with (OE group) or without (O group) vitamin E supplementation...
2017: PloS One
https://www.readbyqxmd.com/read/29028535/baicalin-and-its-metabolites-suppresses-gluconeogenesis-through-activation-of-ampk-or-akt-in-insulin-resistant-hepg-2-cells
#9
Tao Wang, Hongmei Jiang, Shijie Cao, Qian Chen, Mingyuan Cui, Zhijie Wang, Dandan Li, Jing Zhou, Tao Wang, Feng Qiu, Ning Kang
Scutellaria baicalensis Georgi (S. baicalensis), as a traditional Chinese herbal medicine, is an important component of several famous Chinese medicinal formulas for treating patients with diabetes mellitus. Baicalin (BG), a main bioactive component of S. baicalensis, has been reported to have antidiabetic effects. However, pharmacokinetic studies have indicated that BG has poor oral bioavailability. Therefore, it is hard to explain the pharmacological effects of BG in vivo. Interestingly, several reports show that BG is extensively metabolized in rats and humans...
September 23, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29028222/role-of-rbp2-induced-er-and-igf1r-erbb-signaling-in-tamoxifen-resistance-in-breast-cancer
#10
Hee-Joo Choi, Hyeong-Seok Joo, Hee-Young Won, Kyueng-Whan Min, Hyung-Yong Kim, Taekwon Son, Young-Ha Oh, Jeong-Yeon Lee, Gu Kong
Background: Despite the benefit of endocrine therapy, acquired resistance during or after treatment still remains a major challenge in estrogen receptor (ER)-positive breast cancer. We investigated the potential role of histone demethylase retinoblastoma-binding protein 2 (RBP2) in endocrine therapy resistance of breast cancer. Methods: Survival of breast cancer patients according to RBP2 expression was analyzed in three different breast cancer cohorts including METABRIC (n = 1980) and KM plotter (n = 1764)...
April 1, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29028203/an-information-theoretical-analysis-of-human-insulin-glucose-system-towards-the-internet-of-bio-nano-things
#11
Naveed A Abbasi, Ozgur B Akan
Molecular communication is an important tool to understand biological communications with many promising applications in Internet of Bio-Nano Things (IoBNT). The insulinglucose system is of key significance among the major intrabody nanonetworks since it fulfills metabolic requirements of the body. Study of biological networks from information and communication theoretical (ICT) perspective is necessary for their introduction in the IoBNT framework. Therefore, the objective of this work is to provide and analyze for the first time in literature, a simple molecular communication model of the human insulin-glucose system from ICT perspective...
October 11, 2017: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/29027424/-research-progress-on-therapeutic-targets-of-active-components-in-chinese-herbs-for-treatment-of-nonalcoholic-fatty-liver-disease
#12
REVIEW
Yu-Ting Pan, Fang-Yuan Xu, Xi-Zhong Yu, Wen-Bin Shang
Nonalcoholic fatty liver disease(NAFLD) is a kind of metabolic liver injury, which is closely associated with insulin resistance and genetic susceptibility. Traditional Chinese herbs used in the treatment of nonalcoholic fatty liver disease are widely investigated in recent years. A series of recent studies show that the effects of the active components in traditional Chinese herbs on NAFLD are associated with activating AMPK signaling pathway, improving insulin resistance, modulating the activity and expression of peroxisome proliferator-activated receptor γ, antioxidant and anti-inflammatory activities and regulating intestinal flora...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29027303/increased-maternal-insulin-resistance-promotes-placental-growth-and-decreases-placental-efficiency-in-pregnancies-with-obesity-and-gestational-diabetes-mellitus
#13
Kei Tanaka, Kenji Yamada, Miho Matsushima, Tomoko Izawa, Seishi Furukawa, Yoichi Kobayashi, Mitsutoshi Iwashita
AIM: Homeostasis model assessment for insulin resistance (HOMA-IR) was measured during pregnancy to analyze placental weight and efficiency in relation to maternal insulin resistance. METHODS: A retrospective study of 510 pregnant women (130 with gestational diabetes mellitus [GDM], 380 with normal glucose tolerance) was conducted. We reviewed the patients' demographic data (age, parity, pre-pregnancy body mass index [BMI]) and perinatal outcomes (birth weight, placental weight, BMI at delivery, maternal weight gain, HOMA-IR)...
October 13, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/29027251/new-biguanides-as-anti-diabetic-agents-part-ii-synthesis-and-anti-diabetic-properties-evaluation-of-1-arylamidebiguanide-derivatives-as-agents-of-insulin-resistant-type-ii-diabetes
#14
Wahid M Basyouni, Samir Y Abbas, Mohamed F El Shehry, Khairy A M El-Bayouki, Hanan F Aly, Azza Arafa, Mahmoud S Soliman
New 1-arylamidebiguanide hydrochloride salts were synthesized via reaction of hydrazide derivatives with dicyandiamide in acidic medium. The structure of the obtained derivatives was characterized by spectroscopic and elemental analysis tools. The anti-diabetic properties of the synthesized compounds were determined. Oral treatment of hyperglycemic rats with the synthesized biguanide derivatives showed a significant decrease of the elevated glucose in comparison with the anti-diabetic standard drug, metformin...
October 13, 2017: Archiv der Pharmazie
https://www.readbyqxmd.com/read/29027136/oligonol-promotes-glucose-uptake-by-modulating-the-insulin-signaling-pathway-in-insulin-resistant-hepg2-cells-via-inhibiting-protein-tyrosine-phosphatase-1b
#15
Himanshu Kumar Bhakta, Pradeep Paudel, Hajime Fujii, Atsuya Sato, Chan Hum Park, Takako Yokozawa, Hyun Ah Jung, Jae Sue Choi
Insulin resistance and protein tyrosine phosphatase 1B (PTP1B) overexpression are strongly associated with type 2 diabetes mellitus (T2DM), which is characterized by defects in insulin signaling and glucose intolerance. In a previous study, we demonstrated oligonol inhibits PTP1B and α-glucosidase related to T2DM. In this study, we examined the molecular mechanisms underlying the anti-diabetic effects of oligonol in insulin-resistant HepG2 cells. Glucose uptake was assessed using a fluorescent glucose tracer, 2-[N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)amino]-2-deoxyglucose, and the signaling pathway was investigated by western blotting...
October 12, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/29026804/the-effect-of-cardamom-supplementation-on-serum-lipids-glycemic-indices-and-blood-pressure-in-overweight-and-obese-pre-diabetic-women-a-randomized-controlled-trial
#16
Yaghooblou Fatemeh, Fereydoun Siassi, Abbas Rahimi, Fariba Koohdani, Farideh Doostan, Mostafa Qorbani, Gity Sotoudeh
BACKGROUND: Spice consumption helps the treatment of diseases due to their antioxidant and anti-inflammatory contents. Cardamom is one of this spices; therefore, this study is designed to determine the effect of cardamom supplementation on serum lipids, glycemic indices, and blood pressure in pre-diabetic women. METHODS: Eighty overweight or obese pre-diabetic women were randomly allocated to two groups. The intervention group received 3 g of green cardamom and the placebo group received 3 g of rusk powder for 2 months...
2017: Journal of Diabetes and Metabolic Disorders
https://www.readbyqxmd.com/read/29026762/correlation-of-vitamin-d-with-metabolic-parameters-in-polycystic-ovarian-syndrome
#17
Arun Kumar, Satish Barki, Vinod Raghav, Ashutosh Chaturvedi, K V S Hari Kumar
BACKGROUND: Polycystic ovarian syndrome (PCOS) and hypovitaminosis D are the two most common endocrine disorders in young women leading to many adverse metabolic consequences. We evaluated the correlation of 25-hydroxy Vitamin D (25OHD) with metabolic parameters and insulin resistance in PCOS. MATERIALS AND METHODS: We included 100 PCOS patients (age 18-40 years, duration >6 months) serially, in this cross-sectional study. We excluded patients with past use of insulin sensitizers and hormone therapy...
January 2017: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/29026747/acanthosis-nigricans-a-screening-test-for-insulin-resistance-an-important-risk-factor-for-diabetes-mellitus-type-2
#18
Meera Bhagyanathan, Deepak Dhayanithy, Vijayan Ampaya Parambath, R Bijayraj
BACKGROUND: Acanthosis nigricans (AN) is one of the signs suggestive of high insulin resistance (IR). IR is one of the mechanisms involved in pathogenesis of diabetes mellitus type-2 (DM Type-2). Thus, early detection of IR in children may allow us time to intervene well before the development of DM Type-2. In this study, 62% of children having AN had high IR. In children having both, AN and high body mass index (BMI), the incidence of IR was about 80%. This suggests that these easily detectable parameters alone can be useful in screening children at high risk of developing DM Type-2 in future...
January 2017: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/29026446/dna-methylation-links-genetics-fetal-environment-and-an-unhealthy-lifestyle-to-the-development-of-type-2-diabetes
#19
REVIEW
Emma Nilsson, Charlotte Ling
Type 2 diabetes is a complex trait with both environmental and hereditary factors contributing to the overall pathogenesis. One link between genes, environment, and disease is epigenetics influencing gene transcription and, consequently, organ function. Genome-wide studies have shown altered DNA methylation in tissues important for glucose homeostasis including pancreas, liver, skeletal muscle, and adipose tissue from subjects with type 2 diabetes compared with nondiabetic controls. Factors predisposing for type 2 diabetes including an adverse intrauterine environment, increasing age, overweight, physical inactivity, a family history of the disease, and an unhealthy diet have all shown to affect the DNA methylation pattern in target tissues for insulin resistance in humans...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29026411/healthy-eating-index-and-cardiovascular-risk-factors-among-iranian-elderly-individuals
#20
Nafiseh Rashidipour-Fard, Majid Karimi, Sahar Saraf-Bank, Mohammad Hassan Baghaei, Fahimeh Haghighatdoost, Leila Azadbakht
BACKGROUND: Concurrent with increase in life expectancy, the prevalence of chronic diseases such as cardiovascular diseases (CVD) has also increased. Therefore, the aim of this study was to evaluate the association between healthy eating index (HEI) score and CVD risk factors among Iranian elderly. METHODS: This cross-sectional study was performed on a sample of elderly persons from Isfahan, Iran, in 2013. Totally, 107 retired subjects were entered in statistical analysis...
March 2017: ARYA Atherosclerosis
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