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immunodeficiency obesity

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https://www.readbyqxmd.com/read/28800593/in-vivo-functional-and-morphological-characterization-of-bone-and-striated-muscle-microcirculation-in-nsg-mice
#1
Haider Mussawy, Lennart Viezens, Gerrit Hauenherm, Malte Schroeder, Christian Schaefer
Organ-specific microcirculation plays a central role in tumor growth, tumor cell homing, tissue engineering, and wound healing. Mouse models are widely used to study these processes; however, these mouse strains often possess unique microhemodynamic parameters, making it difficult to directly compare experiments. The full functional characterization of bone and striated muscle microcirculatory parameters in non-obese diabetic-severe combined immunodeficiency/y-chain; NOD-Prkds IL2rg (NSG) mice has not yet been reported...
2017: PloS One
https://www.readbyqxmd.com/read/28792285/awareness-and-management-of-elevated-blood-pressure-among-human-immunodeficiency-virus-infected-adults-receiving-antiretroviral-therapy-in-urban-zambia-a-call-to-action
#2
Sophie Bauer, Mwanza Wa Mwanza, Roma Chilengi, Charles B Holmes, Zude Zyambo, Hansjakob Furrer, Matthias Egger, Gilles Wandeler, Michael J Vinikoor
The prevalence of high blood pressure (HBP) and hypertension (HTN), awareness of the diagnoses, and use of anti-hypertensive drugs were examined among human immunodeficiency virus (HIV)-infected individuals on antiretroviral therapy (ART) in Zambia's capital Lusaka. Within a prospective cohort based at two public sector ART clinics, BP was measured at ART initiation and every 6 months thereafter as a routine clinic procedure. Predictors of HBP (systolic BP ≥140 mmHg or diastolic BP ≥90 mmHg) during one year on ART were analyzed using logistic regression, and the proportion with HTN (2+ episodes of HBP >3 months apart) described...
2017: Global Health Action
https://www.readbyqxmd.com/read/28759039/elevated-tumor-ldlr-expression-accelerates-ldl-cholesterol-mediated-breast-cancer-growth-in-mouse-models-of-hyperlipidemia
#3
E J Gallagher, Z Zelenko, B A Neel, I M Antoniou, L Rajan, N Kase, D LeRoith
Obesity is associated with an increase in cancer-specific mortality in women with breast cancer. Elevated cholesterol, particularly low-density lipoprotein cholesterol (LDL-C), is frequently seen in obese women. Here, we aimed to determine the importance of elevated circulating LDL, and LDL receptor (LDLR) expression in tumor cells, on the growth of breast cancer using mouse models of hyperlipidemia. We describe two novel immunodeficient mouse models of hyperlipidemia (Rag1(-/)(-)/LDLR(-/)(-) and Rag1(-/)(-)/ApoE (apolipoprotein E)(-/)(-) mice) in addition to established immunocompetent LDLR(-/)(-) and ApoE(-/)(-) mice...
July 31, 2017: Oncogene
https://www.readbyqxmd.com/read/28755448/short-term-in%C3%A2-vivo-precision-of-whole-body-composition-measurements-on-the-horizon-a-densitometer
#4
Michael Nowitz, Paula Monahan
INTRODUCTION: Dual-energy X-ray absorptiometry (DXA) is increasingly being used to assess abnormalities in body composition associated with a wide variety of conditions including obesity, sarcopenia, diabetes, anorexia, human immunodeficiency virus lipodystrophy, malabsorption and neuromuscular disorders. The objective of this study was to determine the short-term in vivo precision and least significant change in serial body composition measurements provided by the Hologic Horizon A densitometer as there is no published, peer reviewed body composition precision data on Horizon scanners in the medical literature...
July 29, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28725640/risk-factors-for-impaired-fasting-glucose-or-diabetes-among-hiv-infected-patients-on-art-in-the-copperbelt-province-of-zambia
#5
Perfect Shankalala, Choolwe Jacobs, Samuel Bosomprah, Michael Vinikoor, Patrick Katayamoyo, Charles Michelo
BACKGROUND: Africa has a high prevalence of both Human Immunodeficiency Virus and Non Communicable Diseases (NCDs) but in Zambia there are few data on co-morbid NCDs like Diabetes Mellitus (DM) among HIV-infected individuals. We aimed to identify risk factors for impaired fasting glucose or diabetes among HIV-infected Zambians on long-term Combined Antiretroviral Treatment (cART). METHODS: This was a cross sectional study of adult HIV patients in five health facilities of Copperbelt Province in Zambia...
2017: Journal of Diabetes and Metabolic Disorders
https://www.readbyqxmd.com/read/28700773/association-of-multiple-primary-skin-cancers-with-human-immunodeficiency-virus-infection-cd4-count-and-viral-load
#6
Maryam M Asgari, G Thomas Ray, Charles P Quesenberry, Kenneth A Katz, Michael J Silverberg
Importance: Persons with human immunodeficiency virus (HIV) have a 2.8-fold higher risk than HIV-uninfected persons of nonmelanoma skin cancer (NMSC), defined as basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). Individuals with a prior NMSC history are at increased risk for subsequent NMSC, but the magnitude of risk and its relation to HIV disease-related factors, including CD4 count and viral load (VL), are unknown. Objective: To better understand how laboratory markers currently used to evaluate HIV disease progression may be associated with subsequent NMSC risk...
July 12, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28665062/metabolic-complications-among-korean-patients-with-hiv-infection-the-korea-hiv-aids-cohort-study
#7
Dong Hyun Oh, Jin Young Ahn, Sang Il Kim, Min Ja Kim, Jun Hee Woo, Woo Joo Kim, Ji Hyeon Baek, Shin Woo Kim, Bo Youl Choi, Mi Hwa Lee, Ju Yeon Choi, Myung Guk Han, Chun Kang, June Myung Kim, Jun Yong Choi
Currently, metabolic complications are the most common problem among human immunodeficiency virus (HIV)-infected patients, with a high incidence. However, there have been very few studies regarding metabolic abnormalities published in Asia, especially in Korea. This cross-sectional study was performed to investigate the prevalence of and risk factors for metabolic abnormalities in 1,096 HIV-infected patients of the Korea HIV/AIDS cohort study enrolled from 19 hospitals between 2006 and 2013. Data at entry to cohort were analyzed...
August 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28649577/in%C3%A2-vivo-murine-matured-human-cd3-cells-as-a-preclinical-model-for-t-cell-based-immunotherapies
#8
Kevin G Haworth, Christina Ironside, Zachary K Norgaard, Willimark M Obenza, Jennifer E Adair, Hans-Peter Kiem
Adoptive cellular immunotherapy is a promising and powerful method for the treatment of a broad range of malignant and infectious diseases. Although the concept of cellular immunotherapy was originally proposed in the 1990s, it has not seen successful clinical application until recent years. Despite significant progress in creating engineered receptors against both malignant and viral epitopes, no efficient preclinical animal models exist for rapidly testing and directly comparing these engineered receptors...
September 15, 2017: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/28639462/onychomycosis-in-the-21st-century-an-update-on-diagnosis-epidemiology-and-treatment
#9
Aditya K Gupta, Sarah G Versteeg, Neil H Shear
Onychomycosis accounts for 50% of all nail disease cases and is commonly caused by dermatophytes. Diabetes, human immunodeficiency virus, immunosuppression, obesity, smoking, and advancing age are predisposing factors of this fungal infection. Potassium hydroxide and culture are considered the current standard for diagnosing onychomycosis, revealing both fungal viability and species identification. Other diagnostic tests currently available include periodic acid-Schiff staining, polymerase chain reaction techniques, and fluorescent staining...
June 1, 2017: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28626237/cd4-t-cells-memorize-obesity-and-promote-weight-regain
#10
Jianghuan Zou, Beibei Lai, Mingzhu Zheng, Qin Chen, Shujun Jiang, Anying Song, Zan Huang, Peiliang Shi, Xin Tu, Di Wang, Linrong Lu, Zhaoyu Lin, Xiang Gao
Body weight regain often causes failure of obesity therapies while the underlying mechanism remains largely unknown. In this study, we report that immune cells, especially CD4+ T cells, mediate the 'memory' of previous obese status. In a weight gain-loss-regain model, we found that C57BL/6J mice with an obesity history showed a much faster rate of body weight regain. This obesity memory could last for at least 2 months after previously obese mice were kept at the same body weight as non-obese mice. Surprisingly, such obesity memory was abrogated by dexamethasone treatment, whereas immunodeficient Rag1(-/-) and H2A(-/-) mice failed to establish such memory...
June 19, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28614778/the-human-immunodeficiency-virus-hiv1-protease-inhibitor-sanquinavir-activates-autophagy-and-removes-lipids-deposited-in-lipid-droplets
#11
A Polus, M Bociaga-Jasik, U Czech, J Goralska, U Cialowicz, M Chojnacka, M Polus, K Jurowski, A Dembinska-Kiec
Reduction in mortality and increased average life span of the human immunodeficiency virus (HIV)-infected patients treated with antiretroviral therapy (ART) are associated with the risk of unwanted effects, such as insulin resistance and dyslipidemia with cardiovascular complications. Antiretroviral therapy may also be associated with lipodystrophy characterized as peripheral lipoatrophy with central fat accumulation. Understanding the molecular mechanisms of lipodystrophy caused by ART is important for therapeutic strategy and the prediction of side-effects...
April 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28612196/cell-source-differentiation-functional-stimulation-and-potential-application-of-human-thermogenic-adipocytes-in-vitro
#12
REVIEW
Dinh-Toi Chu, Yang Tao, Le Hoang Son, Duc-Hau Le
Recent investigations have showed that the functional thermogenic adipocytes are present in both infants and adult humans. Accumulating evidence suggests that the coexistence of classical and inducible brown (brite) adipocytes in humans at adulthood and these adipocytes function to generate heat from energy resulting in reducing body fat and improving glucose metabolism. Human thermogenic adipocytes can be differentiated in vitro from stem cells, cell lines, or adipose stromal vascular fraction. Pre-activated human brite adipocytes in vitro can maintain their thermogenic function in normal or obese immunodeficient mice; therefore, they improve glucose homeostasis and reduce fat mass in obese animals...
August 2016: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28575319/translational-research-in-the-nonhuman-primate-model-of-tuberculosis
#13
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/28571802/a-homologous-stem-cell-therapy-for-obesity-and-its-related-metabolic-disorders
#14
Dinh-Toi Chu, Yang Tao
Obesity and overweight have become a leading health problem in the world. But we have not yet had any optimal therapy to prevent this health issue. Accumulating evidence suggests that there is existence of functional brown/brite adipocytes in both infants and adult humans, and the activated brown/brite can burn energy by generating heat. These adipocytes can be differentiated from stem cells and transplantation of pre-activated human thermogenic adipocytes in vitro benefits to glucose homeostasis, insulin sensitivity and reduces body fat in normal or obese immunodeficient mice...
June 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28480255/risk-factors-for-influenza-associated-severe-acute-respiratory-illness-hospitalization-in-south-africa-2012-2015
#15
Stefano Tempia, Sibongile Walaza, Jocelyn Moyes, Adam L Cohen, Claire von Mollendorf, Florette K Treurnicht, Marietjie Venter, Marthi Pretorius, Orienka Hellferscee, Senzo Mtshali, Mpho Seleka, Akhona Tshangela, Athermon Nguweneza, Johanna M McAnerney, Nicole Wolter, Anne von Gottberg, Halima Dawood, Ebrahim Variava, Shabir A Madhi, Cheryl Cohen
BACKGROUND: Data on risk factors for influenza-associated hospitalizations in low- and middle-income countries are limited. METHODS: We conducted active syndromic surveillance for hospitalized severe acute respiratory illness (SARI) and outpatient influenza-like illness (ILI) in 2 provinces of South Africa during 2012-2015. We compared the characteristics of influenza-positive patients with SARI to those with ILI to identify factors associated with severe disease requiring hospitalization, using unconditional logistic regression...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28469924/anorexia-cachexia-syndrome-like-hypothalamic-neuroendocrine-dysfunction-in-a-patient-with-a-papillary-craniopharyngioma
#16
Lourdes Balcázar-Hernández, Guadalupe Vargas-Ortega, Yelitza Valverde-García, Victoria Mendoza-Zubieta, Baldomero González-Virla
The craniopharyngiomas are solid cystic suprasellar tumors that can present extension to adjacent structures, conditioning pituitary and hypothalamic dysfunction. Within hypothalamic neuroendocrine dysfunction, we can find obesity, behavioral changes, disturbed circadian rhythm and sleep irregularities, imbalances in the regulation of body temperature, thirst, heart rate and/or blood pressure and alterations in dietary intake (like anorexia). We present a rare case of anorexia-cachexia syndrome like a manifestation of neuroendocrine dysfunction in a patient with a papillary craniopharyngioma...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28453849/association-between-frailty-and-components-of-the-frailty-phenotype-with-modifiable-risk-factors-and-antiretroviral-therapy
#17
RANDOMIZED CONTROLLED TRIAL
Kristine M Erlandson, Kunling Wu, Susan L Koletar, Robert C Kalayjian, Ronald J Ellis, Babafemi Taiwo, Frank J Palella, Katherine Tassiopoulos
The impact of antiretroviral therapy (ART) on frailty among human immunodeficiency virus (HIV)-infected adults has not been well described. HIV-infected participants aged ≥40 years with initial ART receipt through a randomized, controlled AIDS Clinical Trials Group trial completed a frailty assessment. Ordinal logistic regression models examined factors associated with frailty. Of 1016 participants, 6% were frail, and 38% were prefrail. Frailty was associated with lower education, older age, Medicare/Medicaid, initial efavirenz, smoking, obesity, and neurocognitive impairment; physical activity and alcohol use were protective...
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28446206/cooperation-of-neurotrophin-receptor-trkb-and-her2-in-breast-cancer-cells-facilitates-brain-metastases
#18
Cecilia Choy, Khairul I Ansari, Josh Neman, Sarah Hsu, Matthew J Duenas, Hubert Li, Nagarajan Vaidehi, Rahul Jandial
BACKGROUND: Patients with primary breast cancer that is positive for human epidermal growth factor receptor 2 (Her2+) have a high risk of developing metastases in the brain. Despite gains with systemic control of Her2+ disease using molecular therapies, brain metastases remain recalcitrant to therapeutic discovery. The clinical predilection of Her2+ breast cancer cells to colonize the brain likely relies on paracrine mechanisms. The neural niche poses unique selection pressures, and neoplastic cells that utilize the brain microenvironment may have a survival advantage...
April 26, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28423509/histone-lysine-methyltransferase-g9a-is-a-novel-epigenetic-target-for-the-treatment-of-hepatocellular-carcinoma
#19
Masayuki Yokoyama, Tetsuhiro Chiba, Yoh Zen, Motohiko Oshima, Yuko Kusakabe, Yoshiko Noguchi, Kaori Yuki, Shuhei Koide, Shiro Tara, Atsunori Saraya, Kazumasa Aoyama, Naoya Mimura, Satoru Miyagi, Masanori Inoue, Toru Wakamatsu, Tomoko Saito, Sadahisa Ogasawara, Eiichiro Suzuki, Yoshihiko Ooka, Akinobu Tawada, Masayuki Otsuka, Masaru Miyazaki, Osamu Yokosuka, Atsushi Iwama
Histone H3 lysine 9 dimethylation (H3K9me2) is mainly regulated by the histone lysine methyltransferase G9a and is associated with the repression of transcription. However, both the role of G9a and the significance of H3K9me2 in hepatocellular carcinoma (HCC) cells remain unclear. In this study, we conducted loss-of-function assay of G9a using short-hairpin RNA and pharmacological interference. Knockdown of G9a reduced H3K9me2 levels and impaired both HCC cell growth and sphere formation. However, transforming growth factor β1-induced epithelial mesenchymal transition (EMT) was not suppressed by G9a knockdown...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28404888/ecto-5-nucleotidase-cd73-is-a-biomarker-for-clear-cell-renal-carcinoma-stem-like-cells
#20
Lei Song, Wenling Ye, Yong Cui, Jianzhong Lu, Yanan Zhang, Nan Ding, Wentao Hu, Hailong Pei, Zhongjin Yue, Guangming Zhou
Identification of a specific biomarker for cancer stem cells (CSCs) is of potential applications in the development of effective therapeutic strategies for renal cell carcinoma (RCC). In this study, both the RCC cell line 786-O and surgically removed clear cell RCC (ccRCC) tissues were implemented to grew as spheroids in serum-free medium supplemented with mitogens. This subpopulation possessed key characteristics defining CSCs. We also identified that surgically removed ccRCC tissues were heterogenic and there was a subpopulation of cells that was highly stained with rhodamine-123...
May 9, 2017: Oncotarget
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