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Journal of Internal Medicine

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https://www.readbyqxmd.com/read/29331057/manifestations-and-mechanisms-of-myocardial-lipotoxicity-in-obesity
#1
Arthur C Sletten, Linda R Peterson, Jean E Schaffer
Environmental and socioeconomic changes over the past thirty years have contributed to a dramatic rise in the worldwide prevalence of obesity. Heart disease is among the most serious health risks of obesity, with increases in both atherosclerotic coronary heart disease and heart failure among obese individuals. In this review, we focus on primary myocardial alterations in obesity that include hypertrophic remodeling and diastolic dysfunction. Obesity-associated perturbations in myocardial and systemic lipid metabolism are important contributors to cardiovascular complications of obesity...
January 13, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29331055/the-challenges-and-possibilities-of-public-access-defibrillation
#2
REVIEW
Mattias Ringh, Jacob Hollenberg, Thea Palsgaard-Moeller, Leif Svensson, Mårten Rosenqvist, Freddy K Lippert, Mads Wissenberg, Carolina Malta Hansen, Andreas Claesson, Soren Viereck, Jolande A Zijlstra, Rudolph W Koster, Johan Herlitz, Marieke T Blom, Jo Kramer-Johansen, Hanno L Tan, Steffie Beesems, Michiel Hulleman, Theresa M Olasveengen, Fredrik Folke
Out-of-Hospital Cardiac Arrest (OHCA) is a major health problem that affects approximately four hundred thousand patients annually in the United States alone. It is a major challenge for the emergency medical system since decreased survival rates are directly proportional to the time delay from collapse to defibrillation. Historically, defibrillation has only been performed by physicians and in-hospital. With the development of automated external defibrillators (AEDs), rapid defibrillation by non-medical professionals and subsequently by trained or untrained lay bystanders has become possible...
January 13, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29331050/exercise-counteracts-lipotoxicity-by-improving-lipid-turnover-and-lipid-droplet-quality
#3
Evelyn Zacharewicz, Matthijs K C Hesselink, Patrick Schrauwen
The incidence of obesity and metabolic disease, such as type 2 diabetes mellitus (T2D), are rising globally. Dietary lipid over-supply leads to lipid accumulation at ectopic sites, such as skeletal muscle. Ectopic lipid storage is highly correlated with insulin resistance and T2D, likely due to a loss of metabolic flexibility - the capacity to switch between fat and glucose oxidation upon insulin stimulation - and cellular dysfunction because of lipotoxicity. However, muscle lipid levels are also elevated in endurance trained athletes, presenting a paradoxical phenotype of increased intramuscular lipids along with high insulin sensitivity - the "athletes' paradox"...
January 13, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29315893/mechanisms-regulating-expansion-of-cd8-t-cells-during-hiv-1-infection
#4
REVIEW
A Nasi, F Chiodi
Abnormal immune activation and expansion of CD8+ T cells, especially of memory and effector phenotypes, take place during HIV-1 infection, and these abnormal features persist during administration of antiretroviral therapy (ART) to infected patients. The molecular mechanisms for CD8+ T-cell expansion remain poorly characterized. In this article, we review the literature addressing features of CD8+ T-cell immune pathology and present an integrated view on the mechanisms leading to abnormal CD8+ T-cell expansion during HIV-1 infection...
January 5, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29290093/sorrow-and-cardiovascular-events
#5
LETTER
Elias E Mazokopakis
I read with great interest the article by Hagström et al. [1] about the association between psychosocial stress, such as depressive symptoms, loss of interest, living alone and financial stress, and increased cardiovascular mortality among patients with stable coronary heart disease (CHD) despite optimal secondary medical prevention treatment. This article is protected by copyright. All rights reserved.
December 31, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29280273/causal-relationship-of-hepatic-fat-with-liver-damage-and-insulin-resistance-in-nonalcoholic-fatty-liver
#6
P Dongiovanni, S Stender, A Pietrelli, R M Mancina, A Cespiati, S Petta, S Pelusi, P Pingitore, S Badiali, M Maggioni, V Mannisto, S Grimaudo, R M Pipitone, J Pihlajamaki, A Craxi, M Taube, L M S Carlsson, S Fargion, S Romeo, J Kozlitina, L Valenti
BACKGROUND AND AIMS: Nonalcoholic fatty liver disease is epidemiologically associated with hepatic and metabolic disorders. The aim of this study was to examine whether hepatic fat accumulation has a causal role in determining liver damage and insulin resistance. METHODS: We performed a Mendelian randomization analysis using risk alleles in PNPLA3, TM6SF2, GCKR and MBOAT7, and a polygenic risk score for hepatic fat, as instruments. We evaluated complementary cohorts of at-risk individuals and individuals from the general population: 1515 from the liver biopsy cohort (LBC), 3329 from the Swedish Obese Subjects Study (SOS) and 4570 from the population-based Dallas Heart Study (DHS)...
December 27, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29265670/type-2-diabetes-mellitus-and-bone
#7
REVIEW
J Compston
Type 2 diabetes (T2DM) is a rapidly growing public health problem. It is associated with an increased risk of fracture, particularly of the hip, despite normal or high bone mineral density. Longer duration of disease and poor glycaemic control are both associated with higher fracture risk. The factors underlying increased fracture risk have not been clearly established, but increased falls risk, obesity, sarcopenia and co-morbidities are likely to contribute. The basis for reduced bone strength despite higher bone mineral density remains to be fully elucidated...
December 19, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29247470/acute-effect-of-multiple-ozone-metrics-on-mortality-by-season-in-34-chinese-counties-in-2013-2015
#8
Qinghua Sun, Wentao Wang, Chen Chen, Jie Ban, Dandan Xu, Pengfei Zhu, Mike Z He, Tiantian Li
BACKGROUND: Although numerous multicenter studies have estimated the association between ozone exposure and mortality, there are currently no nationally representative multicenter studies of the ozone-mortality relationship in China. OBJECTIVE: To investigate the effect on total (non-accidental) and cause-specific mortality of short-term exposure to ambient ozone, and examine different exposure metrics. METHODS: The effects of short-term exposure to ozone were analyzed using various metrics (daily 1-h maximum, daily 8-h maximum, and daily average) on total (non-accidental) and cause-specific (circulatory and respiratory) mortality from 2013 to 2015 in 34 counties in 10 cities across China...
December 15, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29235174/big-data-and-medicine-a-big-deal
#9
Viktor Mayer-Schönberger, Erik Ingelsson
Big Data promises huge benefits for medical research. Looking beyond superficial increases in the amount of data collected, we identify three key areas where Big Data differs from conventional analyses of data samples: (1) data is captured more comprehensively relative to the phenomenon under study; this reduces some bias but surfaces important tradeoffs, such as between data quantity and data quality; (2) data is often analyzed using machine learning tools, such as neural networks rather than conventional statistical methods resulting in systems that over time capture insights implicit in data, but remain black boxes, rarely revealing causal connections; and (3) the purpose of the analyses of data is no longer simply answering existing questions, but hinting at novel ones and generating promising new hypotheses...
December 13, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29226465/supplemental-oxygen-therapy-does-not-affect-the-systemic-inflammatory-response-to-acute-myocardial-infarction
#10
R Hofmann, P Tornvall, N Witt, J Alfredsson, L Svensson, L Jonasson, L Nilsson
BACKGROUND: Oxygen therapy has been used routinely in normoxemic patients with suspected acute myocardial infarction (AMI) despite limited evidence supporting a beneficial effect. AMI is associated with a systemic inflammation. Here, we hypothesized that the inflammatory response to AMI is potentiated by oxygen therapy. METHODS: The DETermination of the role of Oxygen in suspected Acute Myocardial Infarction (DETO2X-AMI) multicentre trial randomized patients with suspected AMI to receive oxygen at 6 L min-1 for 6-12 h or ambient air...
December 11, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29214689/distinct-factors-determine-the-kinetics-of-disease-relapse-in-adults-transplanted-for-acute-myeloid-leukaemia
#11
C Craddock, J Versluis, M Labopin, G Socie, A Huynh, E Deconinck, L Volin, N Milpied, J H Bourhis, A Rambaldi, P Chevallier, D Blaise, M Manz, E Vellenga, M-C Vekemans, J Maertens, J Passweg, P Vyas, C Schmid, B Löwenberg, G Ossenkoppele, M Mohty, J J Cornelissen, A Nagler
Disease recurrence remains the major cause of death in adults with acute myeloid leukemia (AML) treated using either intensive chemotherapy (IC) or allogenic stem cell transplantation (allo-SCT). The timely delivery of maintenance drug or cellular therapies represent emerging strategies with the potential to reduce relapse after both treatment modalities, but whilst the determinants of overall relapse risk have been extensively characterized the factors determining the timing of disease recurrence have not been characterized...
December 7, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29211319/clinical-implications-of-bone-marrow-adiposity
#12
REVIEW
Annegreet G Veldhuis-Vlug, Clifford J Rosen
Marrow adipocytes, collectively termed marrow adipose tissue (MAT), reside in the bone marrow in close contact to bone cells and hematopoietic cells. Marrow adipocytes arise from the mesenchymal stem cell and share their origin with the osteoblastst. Shifts in the lineage allocation of the mesenchymal stromal cell could potentially explain the association between increased MAT and increased fracture risk in diseases such as postmenopausal osteoporosis, anorexia nervosa and diabetes. Functionally, marrow adipocytes secrete adipokines, such as adiponectin, and cytokines, such as RANK-ligand and stem cell factor...
December 6, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29205566/transglutaminase-type-2-plays-a-key-role-in-the-pathogenesis-of-mycobacterium-tuberculosis-infection
#13
I Palucci, I Matic, L Falasca, M Minerva, G Maulucci, M De Spirito, E Petruccioli, D Goletti, F Rossin, M Piacentini, G Delogu
BACKGROUND: Mycobacterium tuberculosis (MTB), the aetiological agent of tuberculosis (TB), is capable of interfering with the phagosome maturation pathway, by inhibiting phagosome-lysosome fusion and the autophagic process to ensure survival and replication in macrophages. Thus, it has been proposed that the modulation of autophagy may represent a therapeutic approach to reduce MTB viability by enhancing its clearance. OBJECTIVE: The aim of this study was to investigate whether transglutaminase type 2 (TG2) is involved in the pathogenesis of MTB...
December 4, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29178512/body-size-and-risk-of-atrial-fibrillation-a-cohort-study-of-1-1-million-young-men
#14
Kasper Andersen, Finn Rasmussen, Martin Neovius, Per Tynelius, Johan Sundström
BACKGROUND: While tall stature has been related to lower risk of vascular disease, it has been proposed as a risk factor for atrial fibrillation. Little is known about other anthropometric measures and their joint effects on risk for atrial fibrillation. OBJECTIVES: We aim to investigate associations and potential joint effects of height, weight, body surface area (BSA) and body mass index (BMI) with risk of atrial fibrillation. METHODS: In a cohort covering 1,153,151 18-years old men participating in the Swedish military conscription (1972-1995) Cox regression was used to investigate associations of height, weight, BSA and BMI with risk of atrial fibrillation...
November 27, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29178237/cholesterol-and-desmosterol-dancing-to-the-beat-of-a-different-drug
#15
A J Brown, I C Gelissen
No abstract text is available yet for this article.
November 26, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29159845/a-diuretic-sparing-strategy-to-facilitate-deactivation-of-vasopressin-secretion
#16
LETTER
O M P Jolobe
No abstract text is available yet for this article.
November 21, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29143384/enhanced-ventricular-arterial-coupling-during-a-2-year-physical-activity-program-in-patients-with-rheumatoid-arthritis
#17
Philip Sarajlic, Cecilia Fridén, Lars H Lund, Aristomenis Manouras, Ashwin Venkateshvaran, Susanna C Larsson, Birgitta Nordgren, Christina H Opava, Ingrid E Lundberg, Magnus Bäck
OBJECTIVE: To establish how guided physical activity in patients with rheumatoid arthritis (RA) without known cardiovascular disease affected vascular and cardiac function, and how these two entities were prospectively interconnected in this patient group. METHODS: Prospective substudy of 29 participants in the Physical Activity in RA (PARA) 2010 trial. All subjects were examined at baseline, at year 1 and 2 with measures of pulse wave velocity and arterial augmentation index, as well as echocardiographic evaluation of diastolic parameters and ventricular-arterial coupling...
November 15, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29130593/chylomicronemia-risk-factors-ranked-by-importance-for-the-individual-and-community-in-108-711-women-and-men
#18
Simon B Pedersen, Anette Varbo, Anne Langsted, Børge G Nordestgaard
BACKGROUND: Hypertriglyceridemia prevalence is increasing as more individuals become obese, and chylomicronemia risk factors for the individual and community have not been described previously. OBJECTIVE: To describe chylomicronemia risk factors in the general population for individuals and community. METHODS: 108,711 individuals from the Copenhagen General Population Study were grouped as unlikely chylomicronemia (nonfasting triglycerides <2mmol/L(177 mg/dL)), possible chylomicronemia (2-4...
November 11, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29117465/more-sprint-controversy
#19
Franz H Messerli, Sripal Bangalore, Stefano F Rimoldi
Frohlich and Zanchetti, at that time editors-in-chief of Hypertension and Journal of Hypertension, wrote the above words 20 years ago, in midst of the so-called calcium blocker controversy in a dual publication [3]. The authors continued in stating "however, controversy should be based on sound scientific evidence". One may ask whether this indeed is not a contradiction in terms as how can sound scientific evidence possibly give rise to controversy? The answer to this question is quite simple: science may be perfectly sound but interpretation thereof very often is anything but...
November 8, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29105188/reply-proton-pump-inhibitor-use-and-the-risk-of-first-time-ischemic-stroke-in-the-general-population
#20
LETTER
Thomas S G Sehested, Mark A Hlatky, Nicholas Carlson, Gunnar H Gislason
We read with interest the letter from Dai et al. pertaining to our recent observational study.[1] First, due to the inherent nature of observational studies, interpretations of causality remain speculative. Consequently, although the study presents extensive analyses to account for possible biases, we acknowledge the potential skewing of results due to unaccounted biases i.e. residual confounding. This article is protected by copyright. All rights reserved.
November 4, 2017: Journal of Internal Medicine
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