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https://www.readbyqxmd.com/read/29350465/proteomics-analysis-of-skeletal-muscle-from-leptin-deficient-ob-ob-mice-reveals-adaptive-remodeling-of-metabolic-characteristics-and-fiber-type-composition
#1
Milena Schönke, Marie Björnholm, Alexander V Chibalin, Juleen R Zierath, Atul S Deshmukh
Skeletal muscle insulin resistance, an early metabolic defect in the pathogenesis of type 2 diabetes, may be a cause or consequence of altered protein expressions profiles. Proteomics technology offers enormous promise to investigate molecular mechanisms underlying pathologies, however, the analysis of skeletal muscle is challenging. Using state-of-the-art multi-enzyme digestion and filter-aided sample preparation (MED-FASP) and a mass spectrometry (MS) based workflow, we performed a global proteomics analysis of skeletal muscle from leptin-deficient, obese, insulin resistant (ob/ob) and lean mice in mere two fractions in a short time (8 hours/sample)...
January 19, 2018: Proteomics
https://www.readbyqxmd.com/read/29348626/arabidopsis-serine-threonine-tyrosine-protein-kinase-phosphorylates-oil-body-proteins-that-regulate-oil-content-in-the-seeds
#2
Iyappan Ramachandiran, Anitha Vijayakumar, Visvanathan Ramya, Ram Rajasekharan
Protein phosphorylation is an important post-translational modification that can regulate the protein function. The current knowledge on the phosphorylation status of plant oil body (OB) proteins is inadequate. This present study identifies the distinct physiological substrates of Arabidopsis serine/threonine/tyrosine protein kinase (STYK) and its role in seed oil accumulation; the role of Arabidopsis OLE1, a major seed OB protein has also been elucidated. In vitro kinase assay followed by mass spectrometry identifies residue that are phosphorylated by STYK...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29348324/plexind1-signaling-controls-morphological-changes-and-migration-termination-in-newborn-neurons
#3
Masato Sawada, Nobuhiko Ohno, Mitsuyasu Kawaguchi, Shih-Hui Huang, Takao Hikita, Youmei Sakurai, Huy Bang Nguyen, Truc Quynh Thai, Yuri Ishido, Yutaka Yoshida, Hidehiko Nakagawa, Akiyoshi Uemura, Kazunobu Sawamoto
Newborn neurons maintain a very simple, bipolar shape, while they migrate from their birthplace toward their destinations in the brain, where they differentiate into mature neurons with complex dendritic morphologies. Here, we report a mechanism by which the termination of neuronal migration is maintained in the postnatal olfactory bulb (OB). During neuronal deceleration in the OB, newborn neurons transiently extend a protrusion from the proximal part of their leading process in the resting phase, which we refer to as a filopodium-like lateral protrusion (FLP)...
January 18, 2018: EMBO Journal
https://www.readbyqxmd.com/read/29345098/influence-of-maternal-obesity-on-fetal-growth-at-different-periods-of-pregnancies-with-normal-glucose-tolerance
#4
Kei Tanaka, Miho Matsushima, Tomoko Izawa, Seishi Furukawa, Yoichi Kobayashi, Mitsutoshi Iwashita
AIM: We aimed to examine the influence of maternal obesity on fetal growth in utero at different periods of pregnancies with normal glucose tolerance. METHODS: A retrospective cohort study on 356 pregnant women with normal glucose tolerance was conducted. The women were categorized by pre-pregnancy body mass index (BMI) as obese (OB; BMI ≥ 25.0 kg/m2 ) or non-obese (n-OB). Z-scores of the fetal abdominal circumference (AC) and the rate of fetal macrosomia (AC ≥ 90th percentile) at 19, 30, and 36 gestational weeks (GW) were compared between the two groups...
January 18, 2018: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/29343656/crispr-cas9-mediated-generation-of-obese-and-diabetic-mouse-models
#5
Jae-Il Roh, Junghoon Lee, Seong Uk Park, Young-Shin Kang, Jaehoon Lee, Ah-Reum Oh, Dong Joon Choi, Ji-Young Cha, Han-Woong Lee
Mouse models of obesity (ob/ob) and diabetes (db/db) in which the leptin (Lep) and Leptin receptor (Lepr) genes have been mutated, respectively, have contributed to a better understanding of human obesity and type 2 diabetes and to the prevention, diagnosis, and treatment of these metabolic diseases. In this study, we report the first CRISPR-Cas9-induced Lep and Lepr KO mouse models by co-microinjection of Cas9 mRNA and sgRNAs that specifically targeted Lep or Lepr in C57BL/6J embryos. Our newly established Lep and Lepr knockout (KO) mouse models showed phenotypic disorders nearly identical to those found in ob/ob and db/db mice, such as an increase in body weight, hyperglycemia, and hepatic steatosis...
January 16, 2018: Experimental Animals
https://www.readbyqxmd.com/read/29340699/long-term-expression-of-glomerular-genes-in-diabetic-nephropathy
#6
Dominik Chittka, Bernhard Banas, Laura Lennartz, Franz Josef Putz, Kathrin Eidenschink, Sebastian Beck, Thomas Stempfl, Christoph Moehle, Simone Reichelt-Wurm, Miriam C Banas
Background: Although diabetic nephropathy (DN) is the most common cause for end-stage renal disease in western societies, its pathogenesis still remains largely unclear. A different gene pattern of diabetic and healthy kidney cells is one of the probable explanations. Numerous signalling pathways have emerged as important pathophysiological mechanisms for diabetes-induced renal injury. Methods: Glomerular cells, as podocytes or mesangial cells, are predominantly involved in the development of diabetic renal lesions...
January 11, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29332017/insulin-resistance-and-lung-function-in-obese-asthmatic-pre-pubertal-children
#7
Paola Di Filippo, Alessandra Scaparrotta, Daniele Rapino, Tommaso de Giorgis, Marianna Immacolata Petrosino, Marina Attanasi, Sabrina Di Pillo, Francesco Chiarelli, Angelika Mohn
BACKGROUND: Recent findings have supposed that the underlying association between the increased prevalence of both asthma and obesity may be insulin resistance (IR). METHODS: Insulin and glucose serum levels were analyzed to calculate the homeostatic model assessment of insulin resistance (HOMA-IR) for IR in 98 pre-pubertal children. Lung function and allergy status evaluation were performed. The study population was divided into four groups: (1) obese asthmatic children (ObA); (2) normal-weight asthmatic children (NwA); (3) normal-weight non-asthmatic children (Nw) and (4) obese non-asthmatic children (Ob)...
January 26, 2018: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29329033/onjisaponin-b-prevents-cognitive-impairment-in-a-rat-model-of-d-galactose-induced-aging
#8
Gaowen Li, Jimian Yu, Ling Zhang, Yong Wang, Chuang Wang, Qun Chen
In this study, we investigated the potential effect of onjisaponin B (OB) on aging rats induced by D-gal (D-galactose). Sub-acute aging model was established in rats by the subcutaneous injection of D-gal (120 mg/kg) for 42 days, accompanied with OB (10, 20 mg/kg, p.o.) or normal saline intervention for 28 days since the 14th day after the beginning of D-gal stimulation. Morris water maze test and step-down passive avoidance test were conducted to evaluate the cognitive function of the rats. The superoxidase dismutase (SOD), malondialdehyde (MDA), glutathione (GSH) and glutathione peroxidase (GSH-px) contents in hippocampus were measured by according kits, respectively...
January 9, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29328501/cognitive-control-functions-in-individuals-with-obesity-with-and-without-binge-eating-disorder
#9
Ines Kollei, Martina Rustemeier, Stefanie Schroeder, Sebastian Jongen, Stephan Herpertz, Sabine Loeber
OBJECTIVE: Deficits in cognitive control are thought to contribute to the maintenance of obesity (OB). Cognitive control is referred to as impulsivity and binge-eating disorder (BED) is characterized by high levels of impulsivity. The present study sought to elucidate which cognitive control functions differentiate between severe OB with and without BED also taking into account hunger as a moderating factor. METHOD: The study included 48 individuals with OB and BED (OB + BED), 48 individuals with OB and no BED (OB - BED) and 48 normal-weight controls (NWC)...
January 12, 2018: International Journal of Eating Disorders
https://www.readbyqxmd.com/read/29324366/size-matters-the-olfactory-bulb-as-a-marker-for-depression
#10
F Rottstaedt, K Weidner, T Strauß, J Schellong, H Kitzler, S Wolff-Stephan, T Hummel, I Croy
BACKGROUND: Major Depression is mainly related to structural and functional alterations in brain networks involving limbic and prefrontal regions. Reduced olfactory sensitivity in depression is associated with reduced olfactory bulb (OB) volume. We determined if the OB volume reduction is a specific biomarker for depression and whether its diagnostic accuracy allows its use as a valid biomarker to support its diagnosis. METHODS: 84 in-patients with mixed mental disorders and 51 age-matched healthy controls underwent structural MR imaging with a spin-echo T2-wheighted sequence...
December 28, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29321654/motivating-cord-blood-donation-with-information-and-behavioral-nudges
#11
Daniela Grieco, Nicola Lacetera, Mario Macis, Daniela Di Martino
Umbilical cord blood is a source of hematopoietic stem cells essential to treat life-threatening diseases, such as leukemia and lymphoma. However, only a very small percentage of parents donate upon delivery. The decision to donate the cord blood occurs at a very specific time and when parents likely experience emotional, informational, and decisional overloads; these features of cord blood donation make it different from other pro-social activities. In collaboration with an OB-GYN clinic in Milan, Italy, we conducted the first randomized controlled trial that applies tools from behavioral science to foster cord blood donation, and quantified the gains that informational and behavioral "nudges" can achieve...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29319589/preconception-care-for-the-general-ob-gyn
#12
Jessica C Arluck, Allison C Mayhew
Preconception counseling is an important aspect of the care of reproductive-aged women. Asking each woman with each interaction her wishes regarding pregnancy allows the health care provider to investigate her history. The areas to review include environmental toxins, nutrition, genetics, substance abuse, medical conditions, infectious diseases, and psychosocial issues. Then preconception counseling can be individualized. The goal is to decrease or eliminate risks that can cause detriments to the patient or her future pregnancies...
January 9, 2018: Clinical Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29319168/hepatic-mir-125b-inhibits-insulin-signaling-pathway-by-targeting-pik3cd
#13
Xiliang Du, Xiaobing Li, Liang Chen, Min Zhan, Lin Lei, Wenwen Gao, Zhen Shi, Yuhao Dong, Zhe Wang, Xinwei Li, Guowen Liu
Insulin resistance is often characterized as the most critical factor contributing to the development of (T2D) type 2 diabetes. MicroRNAs (miRNAs) are endogenous non-coding short single-stranded RNAs that function as negative regulators in many physiological and pathological processes. The objective of this study was to evaluate the roles of miR-125b in the regulation of insulin sensitivity in hepatocytes. We found that hepatic miR-125b levels were significantly increased in the patients with type 2 diabetes, high fat diet (HFD) mice, ob/ob and db/db mice...
January 10, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29318116/expression-of-multidrug-resistance-genes-in-peripheral-blood-of-patients-with-refractory-epilepsy-and-the-reverse-effect-of-oxcarbazepine-on-its-expression
#14
Jinming Ji, Gang Li, Yunxia Ma, Shuangshuang Pan, Rongrong Yuan
Background: We aimed to investigate the expression levels of multidrug resistance gene 1 (MDR1), multidrug resistance-associated protein 1 (MRP1) and multidrug resistance P-glycoprotein (P-gp) in peripheral blood of patients with refractory epilepsy. Methods: Patients with epilepsy (n=24) and those with refractory epilepsy (n=24) were selected, and 30 normal volunteers were enrolled as control. The expression level of MDR1 genes was detected using semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR)...
January 2018: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/29317579/-metformin-reduces-plasma-triglycerides-in-ob-ob-obese-mice-via-inhibiting-the-hepatic-apoa5-expression
#15
Xiansheng Huang, Rong Li, Luzhu Chen, Wen Dai
To investigate the role of apolipoprotein A5 (apoA5) in the pathogenesis of obesity-related hypertriglyceridemia and the related therapeutic effects of metformin.
 Methods: The ob/ob mice were treated with regular chow diet and metformin for 4 weeks, and the levels of hepatic triglyceride (TG) and apoA5 were measured. Hepatic IAR20 cells were treated with metformin and/or apoA5 siRNAs, and then cellular TG contents and apoA5 expression were determined.
 Results: High plasma and hepatic levels of apoA5 and TG were found in ob/ob mice...
December 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29317415/examining-changes-in-the-equity-of-physician-distribution-in-japan-a-specialty-specific-longitudinal-study
#16
Koji Hara, Susumu Kunisawa, Noriko Sasaki, Yuichi Imanaka
OBJECTIVES: In this longitudinal study, we examined changes in the geographical distribution of physicians in Japan from 2000 to 2014 by clinical specialty with adjustments for healthcare demand based on population structure. METHODS: The Japanese population was adjusted for healthcare demand using health expenditure per capita stratified by age and sex. The numbers of physicians per 100 000 demand-adjusted population (DAP) in 2000 and 2014 were calculated for subprefectural regions known as secondary medical areas...
January 8, 2018: BMJ Open
https://www.readbyqxmd.com/read/29314070/diagnostic-reliability-of-pretreatment-biopsy-in-malignant-nasoethmoidal-tumors-a-retrospective-study-of-77-cases
#17
Alberto Schreiber, Vittorio Rampinelli, Marco Ferrari, Davide Mattavelli, Davide Farina, Simonetta Battocchio, Piero Nicolai
OBJECTIVES/HYPOTHESIS: Pretreatment biopsy is crucial in histology-based management of malignant nasoethmoidal tumors, because misdiagnosis can lead to inadequate therapeutic planning. Factors influencing the reliability of biopsy were retrospectively investigated in a tertiary referral center. STUDY DESIGN: Retrospective case series. METHODS: All patients who underwent biopsy, staging magnetic resonance, surgery, and histologic diagnosis for nasoethmoidal tumors in our hospital were retrospectively evaluated...
January 4, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29313458/clinician-perspectives-on-strategies-to-improve-patient-maternal-immunization-acceptability-in-obstetrics-and-gynecology-practice-settings
#18
Paula M Frew, Laura A Randall, Fauzia Malik, Rupali Lamaye, Andrew Wilson, Sean T O'Leary, Daniel Salmon, Meghan Donnelly, Kevin Ault, Matthew Z Dudley, Vincent L Fenimore, Saad B Omer
Pregnancy is an ideal time to communicate with women about vaccines for themselves and their infants, yet maternal immunization rates remain suboptimal. This study aimed to identify clinic, provider, and staff-related attributes and facilitators to be utilized for a comprehensive vaccine intervention in ob-gyn clinical settings. We conducted in-depth interviews with 24 providers, both healthcare providers (e.g., physicians, nurse practitioners, midwives) and practice managers, from urban and suburban ob-gyn practices in Georgia and Colorado about their immunization attitudes, practices, and patient experiences...
January 9, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29312569/metformin-improves-nonalcoholic-fatty-liver-disease-in-obese-mice-via-down-regulation-of-apolipoprotein-a5-as-part-of-the-ampk-lxr%C3%AE-signaling-pathway
#19
Min-Jie Lin, Wen Dai, Melanie J Scott, Rong Li, Yi-Qi Zhang, Yang Yang, Lu-Zhu Chen, Xian-Sheng Huang
Apolipoprotein A5 (apoA5) has been implicated in the formation of hepatocyte lipid droplets, a histological hallmark of non-alcoholic fatty liver disease (NAFLD). Recent evidence demonstrated that liver X receptor α (LXRα), a transcription factor involved in down-regulation of APOA5 mRNA, is activated by AMP-activated protein kinase (AMPK) that contributes to metformin-related antihyperglycemic effects. In this study we investigated the role of apoA5 and AMPK/LXRα signaling pathway in metformin-related improvement of NAFLD...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29311632/bace1-dependent-amyloid-processing-regulates-hypothalamic-leptin-sensitivity-in-obese-mice
#20
Paul J Meakin, Susan M Jalicy, Gemma Montagut, David J P Allsop, Daniella L Cavellini, Stuart W Irvine, Christopher McGinley, Mary K Liddell, Alison D McNeilly, Karolina Parmionova, Yu-Ru Liu, Charlotte L S Bailey, J Kim Dale, Lora K Heisler, Rory J McCrimmon, Michael L J Ashford
Obesity places an enormous medical and economic burden on society. The principal driver appears to be central leptin resistance with hyperleptinemia. Accordingly, a compound that reverses or prevents leptin resistance should promote weight normalisation and improve glucose homeostasis. The protease Bace1 drives beta amyloid (Aβ) production with obesity elevating hypothalamic Bace1 activity and Aβ1-42 production. Pharmacological inhibition of Bace1 reduces body weight, improves glucose homeostasis and lowers plasma leptin in diet-induced obese (DIO) mice...
January 8, 2018: Scientific Reports
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