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Pathophysiology

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https://www.readbyqxmd.com/read/28823115/identification-of-distinctive-clinical-significance-in-hospitalized-patients-with-endoscopic-duodenal-mucosal-lesions
#1
Yeji Han, Hye-Kyung Jung, Ji Young Chang, Chang Mo Moon, Seong-Eun Kim, Ki-Nam Shim, Sung-Ae Jung, Joo-Young Kim, Ji-Yun Bae, Sae-In Kim, Ji-Hyun Lee, Sanghui Park
Background/Aims: Duodenitis is not infrequent finding in patient undergoing endoscopy. However, hospitalized patients have a higher incidence of secondary duodenal mucosal lesions that might be related with inflammatory bowel disease (IBD), cytomegalovirus (CMV) infection, tuberculosis, immunologic disorders, or other rare infections. We aimed to identify clinicopathologic features of duodenal mucosal lesions in hospitalized patients. Methods: All hospitalized patients having duodenal mucosal lesions were identified by endoscopic registration data and pathologic data query from 2011 to 2014...
August 21, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28823105/understanding-peripartum-depression-through-neuroimaging-a-review-of-structural-and-functional-connectivity-and-molecular-imaging-research
#2
REVIEW
Christy Duan, Jessica Cosgrove, Kristina M Deligiannidis
PURPOSE OF REVIEW: Imaging research has sought to uncover brain structure, function, and metabolism in women with postpartum depression (PPD) as little is known about its underlying pathophysiology. This review discusses the imaging modalities used to date to evaluate postpartum depression and highlights recent findings. RECENT FINDINGS: Altered functional connectivity and activity changes in brain areas implicated in executive functioning and emotion and reward processing have been identified in PPD...
August 19, 2017: Current Psychiatry Reports
https://www.readbyqxmd.com/read/28823102/the-etiology-of-primary-hyperhidrosis-a-systematic-review
#3
REVIEW
Moshe Hashmonai, Alan E P Cameron, Cliff P Connery, Noel Perin, Peter B Licht
PURPOSE: Primary hyperhidrosis is a pathological disorder of unknown etiology, affecting 0.6-5% of the population, and causing severe functional and social handicaps. As the etiology is unknown, it is not possible to treat the root cause. Recently some differences between affected and non-affected people have been reported. The aim of this review is to summarize these new etiological data. METHODS: Search of the literature was performed in the PubMed/Medline Database and pertinent articles were retrieved and reviewed...
August 19, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28822845/triphenyl-phosphonium-coated-nano-quercetin-for-oral-delivery-neuroprotective-effects-in-attenuating-age-related-global-moderate-cerebral-ischemia-reperfusion-injury-in-rats
#4
Swarupa Ghosh, Sibani Sarkar, Somsubhra T Choudhury, Tirtha Ghosh, Nirmalendu Das
Cerebral ischemia-reperfusion is a classical example of reactive oxygen species (ROS) mediated acute damage to brain. Post-ischemic reperfusion induced oxygen free radicals production causes damage to brain cell mitochondria. Antioxidants like quercetin (Qc) have potentials to manage oxidative stress related pathophysiology. However low oral bioavailability and poor cell membrane permeability restricts its therapeutic efficacy. To overcome these hurdles mitochondria specific delivery of Qc nanocapsules were designed to efficiently counteract cerebral ischemia-reperfusion induced cell death and neurodegeneration in young and aged rats...
August 16, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28822835/neuroprotective-effects-of-acetyl-l-carnitine-on-lipopolysaccharide-induced-neuroinflammation-in-mice-involvement-of-brain-derived-neurotrophic-factor
#5
Filiz Kazak, Gul Fatma Yarim
Neuroinflammation is the inflammation of nervous tissue that can lead to neurodegeneration. Brain-derived neurotrophic factor (BDNF) is a neurotrophin which affects growth, function and survival of neurons, enhances the stabilization of synapses, regulates synaptic function and branching of dendrites and axons. Brain-derived neurotrophic factor is believed to be involved in the pathophysiology of central nervous system (CNS) diseases associated with neuroinflamation. The aim of this study was to investigate new protective and therapeutic effect of acetyl-L-carnitine (ALCAR) in neuroinflammation...
August 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28822770/regulation-of-autoimmune-myocarditis-by-host-responses-to-the-microbiome
#6
Jobert G Barin, Monica V Talor, Nicola L Diny, SuFey Ong, Julie A Schaub, Elizabeth Gebremariam, Djahida Bedja, Guobao Chen, Hee Sun Choi, Xuezhou Hou, Lei Wu, Ashley B Cardamone, Daniel A Peterson, Noel R Rose, Daniela Čiháková
The extensive, diverse communities that constitute the microbiome are increasingly appreciated as important regulators of human health and disease through inflammatory, immune, and metabolic pathways. We sought to elucidate pathways by which microbiota contribute to inflammatory, autoimmune cardiac disease. We employed an animal model of experimental autoimmune myocarditis (EAM), which results in inflammatory and autoimmune pathophysiology and subsequent maladaptive cardiac remodeling and heart failure. Antibiotic dysbiosis protected mice from EAM and fibrotic cardiac dysfunction...
August 16, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28822690/microrna29a-treatment-improves-early-tendon-injury
#7
Ashlee E Watts, Neal L Millar, Josh Platt, Susan M Kitson, Moeed Akbar, Raquel Rech, Jay Griffin, Roy Pool, Tom Hughes, Iain B McInnes, Derek S Gilchrist
Tendon injuries (tendinopathies) are common in human and equine athletes and characterized by dysregulated collagen matrix, resulting in tendon damage. We have previously demonstrated a functional role for microRNA29a (miR29a) as a post-transcriptional regulator of collagen 3 expression in murine and human tendon injury. Given the translational potential, we designed a randomized, blinded trial to evaluate the potential of a miR29a replacement therapy as a therapeutic option to treat tendinopathy in an equine model that closely mimics human disease...
July 28, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28822687/right-ventricular-infarction
#8
REVIEW
Vinod Namana, Sushilkumar Satish Gupta, Anna A Abbasi, Hitesh Raheja, Jacob Shani, Gerald Hollander
Coronary Heart Disease is a leading cause of morbidity and mortality worldwide. A great amount is known about left ventricular myocardial infarction. It was not until much later (1974) that right ventricular myocardial infarction was studied as a separate entity. Isolated right ventricle myocardial infarction is rare. Around one-third of patients with acute infero-posterior ST-segment elevation myocardial infarction, will present with concomitant right ventricular infraction. The aim of this paper is to review the literature on the importance of early recognition of right ventricular infarction, clinical presentation, pathophysiology, diagnostic evaluation, differential diagnosis, treatment, complications and prognosis...
July 14, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28822614/heterogeneity-in-a-large-pedigree-with-danon-disease-implications-for-pathogenesis-and-management
#9
Jonathan C P Roos, Matthew J Daniels, Elizabeth Morris, Hanna I Hyry, Timothy M Cox
BACKGROUND: Danon disease is an X-linked disturbance of autophagy manifesting with cognitive impairment and disordered heart and skeletal muscle. After a period of relative stability, patients deteriorate rapidly and may quickly become ineligible for elective heart transplantation - the only life-saving therapy. METHODS: We report a large pedigree with diverse manifestations of Danon disease in hemizygotes and female heterozygotes. RESULTS: Malignant cardiac arrhythmias requiring amiodarone treatment induced thyroid disease in two patients; intractable thyrotoxicosis, which enhances autophagy, caused the death of a 21year-old man...
June 21, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/28822610/evaluation-of-fever-in-the-emergency-department
#10
REVIEW
Sarah DeWitt, Summer A Chavez, Jack Perkins, Brit Long, Alex Koyfman
BACKGROUND: Fever is one of the most common complaints in the emergency department (ED) and is more complex than generally appreciated. The broad differential diagnosis of fever includes numerous infectious and non-infectious etiologies. An essential skill in emergency medicine is recognizing the pitfalls in fever evaluation. OBJECTIVE OF REVIEW: This review provides an overview of the complaint of fever in the ED to assist the emergency physician with a structured approach to evaluation...
August 14, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28822529/atrial-fibrillation-and-hyperthyroidism-a-literature-review
#11
REVIEW
Vivek Reddy, Wael Taha, Shanker Kundumadam, Mazhar Khan
Atrial fibrillation is the most common arrhythmia worldwide with increasing frequency noted with age. Hyperthyroidism is a well-known cause of atrial fibrillation with a 16%-60% prevalence of atrial fibrillation in patients with known hyperthyroidism Ross et al. (2016). While hyperthyroidism as a causative factor of atrial fibrillation is well established, this literature review aims to answer several questions on this topic including: 1. The relationship of atrial fibrillation to hyperthyroidism 2. Atrial fibrillation as a predictor of hyperthyroidism 3...
July 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28822390/physiologic-features-of-brain-death
#12
Eno-Obong Essien, Kristina Fioretti, Thomas M Scalea, Deborah M Stein
Brain death is known to be associated with physiologic derangements but their incidence is poorly described. Knowledge of the changes that occur during brain death is important for management of the potential organ donor. Thus, we sought to characterize the pathophysiology that occurs during brain death in patients with traumatic injuries. All brain-dead patients over a 10-year period were identified from the trauma registry at a level 1 urban trauma center. Patient demographics, injury characteristics, and clinical data for defining organ dysfunction were reviewed for the 24 hours surrounding brain-death declaration...
August 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28822300/drinking-water-to-reduce-alcohol-craving-a-randomized-controlled-study-on-the-impact-of-ghrelin-in-mediating-the-effects-of-forced-water-intake-in-alcohol-addiction
#13
Anne Koopmann, Katharina Lippmann, Rilana Schuster, Iris Reinhard, Patrick Bach, Georg Weil, Marcella Rietschel, Stephanie H Witt, Klaus Wiedemann, Falk Kiefer
BACKGROUND: Recent data suggest that ghrelin is involved in the pathophysiology of alcohol use disorders, affecting alcohol self-administration and craving. Gastric ghrelin secretion is reduced by stomach distension. We now tested the hypothesis whether the clinically well-known effects of high-volume water intake on craving reduction in alcoholism is mediated by acute changes in ghrelin secretion. METHODS: In this randomized human laboratory study, we included 23 alcohol-dependent male inpatient subjects who underwent alcohol cue exposure...
August 5, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28822219/regulation-of-protein-function-by-s-nitrosation-and-s-glutathionylation-processes-and-targets-in-cardiovascular-pathophysiology
#14
Eugenia Belcastro, Caroline Gaucher, Alessandro Corti, Pierre Leroy, Isabelle Lartaud, Alfonso Pompella
Decades of chemical, biochemical and pathophysiological research have established the relevance of post-translational protein modifications induced by processes related to oxidative stress, with critical reflections on cellular signal transduction pathways. A great deal of the socalled 'redox regulation' of cell function is in fact mediated through reactions promoted by reactive oxygen and nitrogen species on more or less specific aminoacid residues in proteins, at various levels within the cell machinery. Modifications involving cysteine residues have received most attention, due to the critical roles they play in determining the structure/function correlates in proteins...
August 28, 2017: Biological Chemistry
https://www.readbyqxmd.com/read/28822071/imaging-the-etiology-of-apathy-anxiety-and-depression-in-parkinson-s-disease-implication-for-treatment
#15
REVIEW
Stephane Thobois, Stephane Prange, Véronique Sgambato-Faure, Léon Tremblay, Emmanuel Broussolle
Apathy, depression, and anxiety are among the most important non-motor signs of Parkinson's disease (PD). This may be encountered at early stages of illness and represent a major source of burden. Understanding their pathophysiology is a major prerequisite for efficient therapeutic strategies. Anatomical and metabolic imaging studies have enabled a breakthrough by demonstrating that widespread abnormalities within the limbic circuits notably the orbitofrontal and anterior cingulate cortices, amygdala, thalamus, and ventral striatum are involved in the pathophysiology of depression, anxiety, and apathy in PD...
August 18, 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28822022/eryptosis-and-oxidative-damage-in-hypertensive-and-dyslipidemic-patients
#16
Carmen Elisa Pinzón-Díaz, José Víctor Calderón-Salinas, Margarita Marcela Rosas-Flores, Gerardo Hernández, Alicia López-Betancourt, Martha Angélica Quintanar-Escorza
Arterial hypertension is a disease that often coexists with dyslipidemia. Both disorders can produce oxidative stress. Studies in vivo and in vitro have proven that oxidative stress can induce an increment of the erythrocyte apoptosis (eryptosis), through the rise of free intracellular calcium concentration ([Ca(2+)]i). Higher levels of eryptosis have not been described in patients with hypertension, dyslipidemia, or both combined. This study involved 81 men between 26 and 50 years old, assorted into four groups: normotensive with and without dyslipidemia, and hypertensive with and without dyslipidemia...
August 18, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28822021/morus-nigra-and-its-major-phenolic-syringic-acid-have-antidepressant-like-and-neuroprotective-effects-in-mice
#17
Ana Paula Dalmagro, Anderson Camargo, Ana Lúcia Bertarello Zeni
Depression is a disorder with a high incidence that has been increasing worldwide although the pathophysiology remains unclear. Moreover, some studies revealed a higher concentration of glutamate and oxidative stress in the patients' brain, which causes cell death by excitotoxicity. Morus nigra L. is known as black mulberry and its leaves are popularly used to treat affections related to menopause, obesity and high cholesterol. M. nigra leaves are a rich fount of phenolics which well-known by the antioxidant property...
August 18, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28821988/presentation-and-management-of-symptomatic-central-bone-cement-embolization
#18
Ahmed Samir Barakat, Tamer Owais, Mohamed Alhashash, Mootaz Shousha, Hesham El Saghir, Bernward Lauer, Heinrich Boehm
BACKGROUND CONTEXT: With more cement augmentation procedures done, the occurrence of serious complications is also expected to rise. Symptomatic central cement embolization is a rare but very serious complication. Moreover, the pathophysiology and treatment of intrathoracic cement embolism remain controversial. PURPOSE: In this case series, we are trying to identify various presentations and suggest our emergent management scheme for symptomatic central cement embolization...
August 18, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28821971/multiscale-mechanics-of-the-cervical-facet-capsular-ligament-with-particular-emphasis-on-anomalous-fiber-realignment-prior-to-tissue-failure
#19
Sijia Zhang, Vahhab Zarei, Beth A Winkelstein, Victor H Barocas
The facet capsular ligaments encapsulate the bilateral spinal facet joints and are common sources of painful injury due to afferent innervation. These ligaments exhibit architectural complexity, which is suspected to contribute to the experimentally observed lack of co-localization between macroscopic strain and microstructural tissue damage. The heterogeneous and multiscale nature of this ligament, combined with challenges in experimentally measuring its microscale mechanics, hinders the ability to understand sensory mechanisms under normal or injurious loading...
August 18, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28821874/global-methylation-correlates-with-clinical-status-in-multiple-sclerosis-patients-in-the-first-year-of-ifnbeta-treatment
#20
María Jesús Pinto-Medel, Begoña Oliver-Martos, Patricia Urbaneja-Romero, Isaac Hurtado-Guerrero, Jesús Ortega-Pinazo, Pedro Serrano-Castro, Óscar Fernández, Laura Leyva
The alteration of DNA methylation patterns are a key component of disease onset and/or progression. Our objective was to evaluate the differences in Long Interspersed Nuclear Element-1 (LINE-1) methylation levels, as a surrogate marker of global DNA methylation, between multiple sclerosis (MS) patients and healthy controls. In addition, we assessed the association of LINE-1 methylation with clinical disease activity in patients treated with IFNbeta (IFNβ). We found that individuals with high levels of LINE-1 methylation showed 6-fold increased risk of suffering MS...
August 18, 2017: Scientific Reports
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