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obesity and genetic mutations

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https://www.readbyqxmd.com/read/28525397/an-unusual-case-of-sudden-death-is-there-a-relationship-between-thyroid-disorders-and-fatal-pulmonary-thromboembolism-a-case-report-and-review-of-literature
#1
Isabella Aquila, Silvia Boca, Fiorella Caputo, Matteo A Sacco, Santo Gratteri, Vittorio Fineschi, Pietrantonio Ricci
In adults, the most common cause of sudden death is coronary heart disease or defects in the cardiac conduction system; however, there are many cases of sudden death occurring from other causes such as fatal pulmonary thromboembolism. Several risk factors are recognized, including hospitalization, surgery, obesity, pregnancy, the use of oral contraceptives, traumatic fractures, and genetic conditions, which cause hypercoagulable states such as factor V Leiden mutations. Although many risk factors have been identified, the mortality rate is still high...
May 19, 2017: American Journal of Forensic Medicine and Pathology
https://www.readbyqxmd.com/read/28479386/obesity-risk-prediction-among-women-of-upper-egypt-the-impact-of-serum-vaspin-and-vaspin-rs2236242-gene-polymorphism
#2
Soad M Abdel Ghany, Ayat A Sayed, Sahar E M El-Deek, Hala M Elbadre, Marwa A Dahpy, Medhat A Saleh, Hanan Sharaf, Mohamed Hassan
BACKGROUND: Vaspin is an adipokine that is potentially linking obesity, insulin resistance, metabolic syndrome and type-2 diabetes. AIM: The present study aimed to investigate the impact of vaspin rs2236242 gene polymorphism on the risk of obesity, diabetes, their metabolic traits, and serum vaspin levels in a sample of Upper Egyptian women. SUBJECTS AND METHODS: A total of 224 subjects, 112 obese (62 non diabetics, 50 diabetics) and 112 controls were included in this case control study...
May 4, 2017: Gene
https://www.readbyqxmd.com/read/28472148/genetic-analysis-of-single-minded-1-gene-in-early-onset-severely-obese-children-and-adolescents
#3
Daniela Stanikova, Marek Buzga, Patrik Krumpolec, Martina Skopkova, Martina Surova, Barbara Ukropcova, Lubica Ticha, Miroslava Petrasova, Dominika Gabcova, Miroslava Huckova, Lucie Piskorova, Jan Bozensky, Marian Mokan, Jozef Ukropec, Ivona Zavacka, Iwar Klimes, Juraj Stanik, Daniela Gasperikova
BACKGROUND: Inactivating mutations of the hypothalamic transcription factor singleminded1 (SIM1) have been shown as a cause of early-onset severe obesity. However, to date, the contribution of SIM1 mutations to the obesity phenotype has only been studied in a few populations. In this study, we screened the functional regions of SIM1 in severely obese children of Slovak and Moravian descent to determine if genetic variants within SIM1 may influence the development of obesity in these populations...
2017: PloS One
https://www.readbyqxmd.com/read/28465145/energy-sensing-pathways-bridging-type-2-diabetes-and-colorectal-cancer
#4
REVIEW
Juhong Yang, Reiko Nishihara, Xuehong Zhang, Shuji Ogino, Zhi Rong Qian
The recently rapid increase of obesity and type 2 diabetes mellitus has caused great burden to our society. A positive association between type 2 diabetes and risk of colorectal cancer has been reported by increasing epidemiological studies. The molecular mechanism of this connection remains elusive. However, type 2 diabetes may result in abnormal carbohydrate and lipid metabolism, high levels of circulating insulin, insulin growth factor-1, and adipocytokines, as well as chronic inflammation. All these factors could lead to the alteration of energy sensing pathways such as the AMP activated kinase (PRKA), mechanistic (mammalian) target of rapamycin (mTOR), SIRT1, and autophagy signaling pathways...
April 13, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28459029/association-of-fat-mass-and-obesity-associated-gene-variant-with-lifestyle-factors-and-body-fat-in-indian-children
#5
Lavanya S Parthasarthy, Nikhil Phadke, Shashi Chiplonkar, Anuradha Khadilkar, Kavita Khatod, Veena Ekbote, Surabhi Shah, Vaman Khadilkar
CONTEXT: Common intronic variants of the fat mass and obesity-associated (FTO) gene have been associated with obesity-related traits in humans. AIMS: (1) The aim of this study is to study the distribution of FTO gene variants across different body mass index (BMI) categories and (2) to explore the association between FTO gene variants and lifestyle factors in obese and normal weight Indian children. SUBJECTS AND METHODS: Fifty-six children (26 boys, mean age 10...
March 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28453643/early-onset-obesity-unrecognized-first-evidence-for-gnas-mutations-and-methylation-changes
#6
Annette Grüters-Kieslich, Monica Reyes, Amita Sharma, Cem Demirci, Terry J DeClue, Erwin Lankes, Dov Tiosano, Dirk Schnabel, Harald Jüppner
Context: Early-onset obesity, characteristic for disorders affecting the leptin-melanocortin pathway, is also observed in pseudohypoparathyroidism type Ia (PHP1A), a disorder caused by maternal GNAS mutations that disrupt expression or function of the stimulatory G protein (Gsα). Mutations and/or epigenetic abnormalities at the same genetic locus are also the cause of pseudohypoparathyroidism type Ib (PHP1B). However, although equivalent biochemical and radiographic findings can be encountered in these related disorders caused by GNAS abnormalities they are considered distinct clinical entities...
April 27, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28438610/hyperglycemia-increases-interstitial-cells-of-cajal-via-mapk1-and-mapk3-signaling-to-etv1-and-kit-leading-to-rapid-gastric-emptying
#7
Yujiro Hayashi, Yoshitaka Toyomasu, Siva Arumugam Saravanaperumal, Michael R Bardsley, John A Smestad, Andrea Lorincz, Seth T Eisenman, Gianluca Cipriani, Molly H Nelson Holte, Fatimah J Al Khazal, Sabriya A Syed, Gabriella B Gajdos, Kyoung Moo Choi, Gary J Stoltz, Katie E Miller, Michael L Kendrick, Brian P Rubin, Simon J Gibbons, Adil E Bharucha, David R Linden, Louis James Maher, Gianrico Farrugia, Tamas Ordog
BACKGROUND & AIMS: Depletion of interstitial cells of Cajal (ICCs) is common in diabetic gastroparesis. However, in approximately 20% of patients with diabetes, gastric emptying (GE) is accelerated. GE is also faster in obese individuals, and is associated with increased blood levels of glucose in patients with type 2 diabetes. To understand the fate of ICCs in hyperinsulinemic, hyperglycemic states characterized by rapid GE, we studied mice with mutation of the leptin receptor (Lepr(db/db)), which in our colony had accelerated GE...
April 21, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28432282/loss-of-function-myostatin-mutation-increases-insulin-sensitivity-and-browning-of-white-fat-in-meishan-pigs
#8
Chunbo Cai, Lili Qian, Shengwang Jiang, Youde Sun, Qingqing Wang, Dezun Ma, Gaojun Xiao, Biao Li, Shanshan Xie, Ting Gao, Yaoxing Chen, Jie Liu, Xiaorong An, Wentao Cui, Kui Li
Myostatin-deficient mice showed a remarkable hypertrophy of skeletal muscle, with a decreased fat mass and enhanced insulin sensitivity. Currently, it is unclear if the inhibition of myostatin could be used as an approach to treat human obesity and insulin resistance. In this study, we investigated if the inhibition of porcine myostatin has any effect on fat deposition and insulin sensitivity using genetically engineered Meishan pigs containing a myostatin loss-of-function mutation (Mstn -/- ). Our results indicated that, when compared with wild-type pigs, the amount of subcutaneous fat and leaf fat of Mstn -/- pigs were significantly decreased mainly due to the browning of subcutaneous adipose tissue...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28407410/variable-clinical-course-of-identical-twin-neonates-with-alstr%C3%A3-m-syndrome-presenting-coincidentally-with-dilated-cardiomyopathy
#9
Seth A Hollander, Norah Alsaleh, Maura Ruzhnikov, Kristen Jensen, David N Rosenthal, David A Stevenson, Melanie Manning
Alström Syndrome (AS) is a rare autosomal recessive disorder caused by mutations in the ALMS1 gene. We report monozygotic twin infants who presented concurrently with symptoms of congestive heart failure (CHF) due to dilated cardiomyopathy (DCM). Following their initial presentation, one twin improved both echocardiographically and functionally while the other twin showed a progressive decline in ventricular function and worsening CHF symptoms requiring multiple hospitalizations and augmentation of heart failure therapy...
June 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28391883/childhood-adult-onset-lysosomal-acid-lipase-deficiency-a-serious-metabolic-and-vascular-phenotype-beyond-liver-disease-four-new-pediatric-cases
#10
Pierre Poinsot, Sophie Collardeau Frachon, Lioara Restier, André Sérusclat, Mathilde Di Filippo, Sybil Charrière, Philippe Moulin, Alain Lachaux, Noel Peretti
BACKGROUND: The childhood/adult-onset lysosomal acid lipase deficiency (LALD; late-onset LALD) is a rare genetic disease. Children present severe fatty liver disease with early cirrhosis. Before enzyme replacement therapy, statins were the standard treatment to improve the severe dyslipidemia. However, late-onset LALD should be considered as a systemic metabolic disease: chronic hyper-low-density lipoprotein and hypo-high-density lipoprotein cholesterolemia induces early atherosclerosis in addition to the liver morbidity...
January 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28373404/precancer-atlas-to-drive-precision-prevention-trials
#11
Avrum Spira, Matthew B Yurgelun, Ludmil Alexandrov, Anjana Rao, Rafael Bejar, Kornelia Polyak, Marios Giannakis, Ali Shilatifard, Olivera J Finn, Madhav Dhodapkar, Neil E Kay, Esteban Braggio, Eduardo Vilar, Sarah A Mazzilli, Timothy R Rebbeck, Judy E Garber, Victor E Velculescu, Mary L Disis, Douglas C Wallace, Scott M Lippman
Cancer development is a complex process driven by inherited and acquired molecular and cellular alterations. Prevention is the holy grail of cancer elimination, but making this a reality will take a fundamental rethinking and deep understanding of premalignant biology. In this Perspective, we propose a national concerted effort to create a Precancer Atlas (PCA), integrating multi-omics and immunity - basic tenets of the neoplastic process. The biology of neoplasia caused by germline mutations has led to paradigm-changing precision prevention efforts, including: tumor testing for mismatch repair (MMR) deficiency in Lynch syndrome establishing a new paradigm, combinatorial chemoprevention efficacy in familial adenomatous polyposis (FAP), signal of benefit from imaging-based early detection research in high-germline risk for pancreatic neoplasia, elucidating early ontogeny in BRCA1-mutation carriers leading to an international breast cancer prevention trial, and insights into the intricate germline-somatic-immunity interaction landscape...
April 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/28359874/in-silico-analysis-of-nonsynonymous-single-nucleotide-polymorphisms-of-the-human-adiponectin-receptor-2-adipor2-gene
#12
Md Solayman, Md Abu Saleh, Sudip Paul, Md Ibrahim Khalil, Siew Hua Gan
Polymorphisms of the ADIPOR2 gene are frequently linked to a higher risk of developing diseases including obesity, type 2 diabetes and cardiovascular diseases. Though mutations of the ADIPOR2 gene are detrimental, there is a lack of comprehensive in silico analyses of the functional and structural impacts at the protein level. Considering the involvement of ADIPOR2 in glucose uptake and fatty acid oxidation, an in silico functional analysis was conducted to explore the possible association between genetic mutations and phenotypic variations...
March 14, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28358273/new-frontiers-in-the-treatment-of-colorectal-cancer-autophagy-and-the-unfolded-protein-response-as-promising-targets
#13
Pooneh Mokarram, Mohammed Albokashy, Maryam Zarghooni, Mohammad Amin Moosavi, Zahra Sepehri, Qi Min Chen, Andrzej Hudecki, Aliyeh Sargazi, Javad Alizadeh, Adel Rezaei Moghadam, Mohammad Hashemi, Hesam Movassagh, Thomas Klonisch, Ali Akbar Owji, Marek J Łos, Saeid Ghavami
Colorectal cancer (CRC), despite numerous therapeutic and screening attempts, still remains a major life-threatening malignancy. CRC etiology entails both genetic and environmental factors. Macroautophagy/autophagy and the unfolded protein response (UPR) are fundamental mechanisms involved in the regulation of cellular responses to environmental and genetic stresses. Both pathways are interconnected and regulate cellular responses to apoptotic stimuli. In this review, we address the epidemiology and risk factors of CRC, including genetic mutations leading to the occurrence of the disease...
February 23, 2017: Autophagy
https://www.readbyqxmd.com/read/28351432/-genetic-obesity-new-diagnostic-options
#14
T I de Vries, S I M Alsters, L Kleinendorst, G van Haaften, B van der Zwaag, M M Van Haelst
- Obesity is an important risk factor for morbidity and premature death, as well as a contributing factor to psychosocial problems. The incidence of obesity has increased dramatically over the last few decades.- Obesity is considered to be a multifactorial condition in which both environmental factors and genetic factors play a part.- In approximately 5% of patients with morbid obesity, a monogenic cause can be identified. Mutations in the MC4R gene are the most frequently occurring monogenic cause of obesity...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28324025/clinical-and-genetic-features-of-patients-with-type-2-diabetes-and-renal-glycosuria
#15
Siqian Gong, Jiandong Guo, Xueyao Han, Meng Li, Lingli Zhou, Xiaoling Cai, Yu Zhu, Yingying Luo, Simin Zhang, Xianghai Zhou, Yumin Ma, Linong Ji
Context: A sodium glucose cotransporter 2 (SGLT2) inhibitor, which increases urinary glucose excretion, was reported to decrease blood glucose levels and deaths among patients with type 2 diabetes mellitus (T2DM) and established cardiovascular disease. SLC5A2 and HNF1A mutations are associated with renal glycosuria, but their contributions to renal glycosuria in patients with T2DM are not well understood. Objective: To assess the clinical features of patients with T2DM and renal glycosuria and those with T2DM and low urinary glucose excretion (LUGE) and identify variants in the exons of SLC5A2 and HNF1A in patients with renal glycosuria and T2DM...
May 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28272210/alstr%C3%A3-m-syndrome-a-novel-mutation-in-saudi-girl-with-insulin-resistant-diabetes
#16
Ayman A Bakar, Naglaa Mohamed Kamal, Abdulaziz Alsaedi, Reem Turkistani, Dima Aldosari
RATIONALE: Alström syndrome is an autosomal recessive disorder characterized by hearing loss, blindness, obesity, non-insulin dependent diabetes, and others. PATIENT CONCERN: A 10 years old Saudi girl, who presented with diabetic ketoacidosis and found to have hearing loss and blindness. DIAGNOSIS: Alström syndrome. INTERVENTIONS: Multidisciplinary team approach, with echocardiography, hearing test, eye exam and genetic test for Alström syndrome...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28271632/the-role-of-insufficient-copper-in-lipid-synthesis-and-fatty-liver-disease
#17
REVIEW
Austin Morrell, Savannah Tallino, Lei Yu, Jason L Burkhead
The essential transition metal copper is important in lipid metabolism, redox balance, iron mobilization, and many other critical processes in eukaryotic organisms. Genetic diseases where copper homeostasis is disrupted, including Menkes disease and Wilson disease, indicate the importance of copper balance to human health. The severe consequences of insufficient copper supply are illustrated by Menkes disease, caused by mutation in the X-linked ATP7A gene encoding a protein that transports copper from intestinal epithelia into the bloodstream and across the blood-brain barrier...
April 2017: IUBMB Life
https://www.readbyqxmd.com/read/28243972/genetic-interaction-of-dgat2-and-faah-in-the-development-of-human-obesity
#18
Tinglu Ning, Yaoyu Zou, Minglan Yang, Qianqian Lu, Maopei Chen, Wen Liu, Shaoqian Zhao, Yingkai Sun, Juan Shi, Qinyun Ma, Jie Hong, Ruixin Liu, Jiqiu Wang, Guang Ning
PURPOSE: DGAT2 is the critical catalyzing enzyme for triglyceride biosynthesis, and excess triglyceride accumulation in fat tissues is a fundamental process for obesity. Mutations in DGAT2 or other genes interacting with DGAT2 associated with adiposity have not been reported in human to date. METHODS: DGAT2 mutation was identified based on our in-home database-exome sequencing 227 young obese subjects (body-mass index (BMI), 35.1-61.7 kg/m(2)) and 219 lean controls (BMI, 17...
February 27, 2017: Endocrine
https://www.readbyqxmd.com/read/28213398/foxo-integration-of-insulin-signaling-with-glucose-and-lipid-metabolism
#19
REVIEW
Sojin Lee, H Henry Dong
The forkhead box O family consists of FoxO1, FoxO3, FoxO4 and FoxO6 proteins in mammals. Expressed ubiquitously in the body, the four FoxO isoforms share in common the amino DNA-binding domain, known as 'forkhead box' domain. They mediate the inhibitory action of insulin or insulin-like growth factor on key functions involved in cell metabolism, growth, differentiation, oxidative stress, senescence, autophagy and aging. Genetic mutations in FoxO genes or abnormal expression of FoxO proteins are associated with metabolic disease, cancer or altered lifespan in humans and animals...
May 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28180024/ciliopathies-genetics-in-pediatric-medicine
#20
REVIEW
Machteld M Oud, Ideke J C Lamers, Heleen H Arts
Ciliary disorders, which are also referred to as ciliopathies, are a group of hereditary disorders that result from dysfunctional cilia. The latter are cellular organelles that stick up from the apical plasma membrane. Cilia have important roles in signal transduction and facilitate communications between cells and their surroundings. Ciliary disruption can result in a wide variety of clinically and genetically heterogeneous disorders with overlapping phenotypes. Because cilia occur widespread in our bodies many organs and sensory systems can be affected when they are dysfunctional...
March 2017: Journal of Pediatric Genetics
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