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SI dysfunction

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https://www.readbyqxmd.com/read/29325896/gut-flora-dependent-metabolite-trimethylamine-n-oxide-accelerates-endothelial-cell-senescence-and-vascular-aging-through-oxidative-stress
#1
Yilang Ke, Dang Li, Mingming Zhao, Changjie Liu, Jia Liu, Aiping Zeng, Xiaoyun Shi, Si Cheng, Bing Pan, Lemin Zheng, Huashan Hong
Trimethylamine-N-oxide (TMAO), gut microbiota-dependent metabolites, has been shown to be associated with cardiovascular diseases. However, little is known about the relationship between TMAO and vascular aging. Here, we observed a change in TMAO during the aging process and the effects of TMAO on vascular aging and endothelial cell (EC) senescence. We analyzed age-related plasma levels of TMAO in young adults (18-44 years old), older adults (≥65 years old), and 1-month-old, 3-month-old, 6-month-old and 10-month-old senescence-accelerated mouse prone 8 (SAMP8) and age-matched senescence-accelerated mouse resistance 1 (SAMR1) models...
January 8, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29321592/amyloid-%C3%AE-causes-excitation-inhibition-imbalance-through-dopamine-receptor-1-dependent-disruption-of-fast-spiking-gabaergic-input-in-anterior-cingulate-cortex
#2
Si-Qiang Ren, Wen Yao, Jing-Zhi Yan, Chunhui Jin, Jia-Jun Yin, Jianmin Yuan, Shui Yu, Zaohuo Cheng
Alzheimer's disease (AD) is the most common cause of dementia in the elderly. At the early stages of AD development, the soluble β-amyloid (Aβ) induces synaptic dysfunction, perturbs the excitation/inhibition balance of neural circuitries, and in turn alters the normal neural network activity leading to cognitive decline, but the underlying mechanisms are not well established. Here by using whole-cell recordings in acute mouse brain slices, we found that 50 nM Aβ induces hyperexcitability of excitatory pyramidal cells in the cingulate cortex, one of the most vulnerable areas in AD, via depressing inhibitory synaptic transmission...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29317239/protective-effect-of-mitochondrial-targeted-antioxidant-mitoq-against-iron-ion-56fe-radiation-induced-brain-injury-in-mice
#3
Lu Gan, Zhenhua Wang, Jing Si, Rong Zhou, Chao Sun, Yang Liu, Yancheng Ye, Yanshan Zhang, Zhiyuan Liu, Hong Zhang
Exposure to iron ion 56Fe radiation (IR) during space missions poses a significant risk to the central nervous system and radiation exposure is intimately linked to the production of reactive oxygen species (ROS). MitoQ is a mitochondria-targeted antioxidant that has been shown to decrease oxidative damage and lower mitochondrial ROS in a number of animal models. Therefore, the present study aimed to investigate role of the mitochondrial targeted antioxidant MitoQ against 56Fe particle irradiation-induced oxidative damage and mitochondria dysfunction in the mouse brains...
January 6, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29313215/association-of-mitochondrial-dna-content-in-peripheral-blood-with-cancer-related-fatigue-and-chemotherapy-related-cognitive-impairment-in-early-stage-breast-cancer-patients-a-prospective-cohort-study
#4
Jung-Woo Chae, Peh Siang Chua, Terence Ng, Angie Hui Ling Yeo, Maung Shwe, Yan Xiang Gan, Sreemanee Dorajoo, Koon Mian Foo, Kiley Wei-Jen Loh, Si-Lin Koo, Wen Yee Chay, Tira Jing Ying Tan, Sok Yuen Beh, Elaine Hsuen Lim, Guek Eng Lee, Rebecca Dent, Yoon Sim Yap, Raymond Ng, Han Kiat Ho, Alexandre Chan
PURPOSE: Cancer-related fatigue (CRF) and chemotherapy-related cognitive impairment (CRCI) are reported to be associated with mitochondrial dysfunction. Hence, mitochondrial DNA (mtDNA) content, a biomarker of mitochondrial dysfunction, is hypothesized to correlate with the onset of CRF and CRCI. This study aims to evaluate the association between peripheral blood mtDNA content reduction and severity of CRF and CRCI in patients receiving chemotherapy. METHODS: This was a prospective cohort study...
January 8, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29303472/biomechanics-of-unilateral-and-bilateral-sacroiliac-joint-stabilization-laboratory-investigation
#5
Derek P Lindsey, Robin Parrish, Mukund Gundanna, Jeremi Leasure, Scott A Yerby, Dimitriy Kondrashov
OBJECTIVE Bilateral symptoms have been reported in 8%-35% of patients with sacroiliac (SI) joint dysfunction. Stabilization of a single SI joint may significantly alter the stresses on the contralateral SI joint. If the contralateral SI joint stresses are significantly increased, degeneration may occur; alternatively, if the stresses are significantly reduced, bilateral stabilization may be unnecessary for patients with bilateral symptoms. The biomechanical effects of 1) unilateral stabilization on the contralateral SI joint and 2) bilateral stabilization on both SI joints are currently unknown...
January 5, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29295634/the-need-to-calculate-target-glucose-levels-when-measuring-changes-in-insulin-sensitivity-during-interventions-for-individuals-with-type-2-diabetes
#6
Nor Azlan Othman, Paul D Docherty, Jeremy D Krebs, Damon A Bell, J Geoffrey Chase
BACKGROUND: Physiological models that are used with dynamic test data to assess insulin sensitivity (SI) assume that the metabolic target glucose concentration ( GTARGET) is equal to fasting glucose concentration ( G0). However, recent research has implied that irregularities in G0 in diabetes may cause erroneous SI values. This study quantifies the magnitude of these errors. METHODS: A clinically validated insulin/glucose model was used to calculate SI with the standard fasting assumption (SFA) G0 = GTARGET...
January 1, 2018: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/29286083/kdm3a-inhibition-attenuates-high-concentration-insulin%C3%A2-induced-vascular-smooth-muscle-cell-injury-by-suppressing-mapk-nf%C3%A2-%C3%AE%C2%BAb-pathways
#7
Bo-Fang Zhang, Hong Jiang, Jing Chen, Xin Guo, Qi Hu, Shuo Yang
Previous studies have indicated that lysine (K)‑specific demethylase 3A (KDM3A) is associated with diverse diabetes‑associated cardiovascular complications in response to high glucose levels. However, the effects of KDM3A on the pathological progression of cardiovascular injuries in response to high insulin levels remain unknown. The present study aimed to explore whether KDM3A knockdown may attenuate high insulin‑induced vascular smooth muscle cell (VSMC) dysfunction, and to further investigate the underlying mechanisms...
December 29, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29285123/an-in-vitro-endothelial-cell-protective-effect-of-secretory-leukocyte-protease-inhibitor-against-simulated-ischaemia-reperfusion-injury
#8
Nitirut Nernpermpisooth, Eakkapote Prompunt, Sarawut Kumphune
Endothelial dysfunction is an essential deleterious modulator of ischaemia/reperfusion (I/R) injury. Secretory leukocyte protease inhibitor (SLPI) has demonstrated myocardial protection in cardiac transplantation; however, the effect of SLPI in endothelial I/R injury remains unexplored. In the present study, the effect of recombinant human SLPI (rhSLPI) treatment against endothelial cells (ECs) subjected to simulated I/R injury and the effect of treatment at different time points were determined. Human umbilical vein ECs (HUVECs) were subjected to normoxic or simulated I/R (sI/R) conditions, and rhSLPI at concentrations of 1, 10, 100 and 1,000 ng/ml was added to the cells prior to ischaemia, during ischaemia or at the onset of reperfusion...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29279747/prevalence-of-neuropathic-pain-and-patient-reported-outcomes-in-korean-adults-with-chronic-low-back-pain-resulting-from-neuropathic-low-back-pain
#9
Jin-Hwan Kim, Jae Taek Hong, Chong-Suh Lee, Keun-Su Kim, Kyung-Soo Suk, Jin-Hyok Kim, Ye-Soo Park, Bong-Soon Chang, Deuk Soo Jun, Young-Hoon Kim, Jung-Hee Lee, Woo-Kie Min, Jung-Sub Lee, Si-Young Park, In-Soo Oh, Jae-Young Hong, Hyun-Chul Shin, Woo-Kyung Kim, Joo-Han Kim, Jung-Kil Lee, In-Soo Kim, Yoon Ha, Soo-Bin Im, Sang Woo Kim, In-Ho Han, Jun-Jae Shin, Byeong Cheol Rim, Bo-Jeong Seo, Young-Joo Kim, Juneyoung Lee
Study Design: A noninterventional, multicenter, cross-sectional study. Purpose: We investigated the prevalence of neuropathic pain (NP) and patient-reported outcomes (PROs) of the quality of life (QoL) and functional disability in Korean adults with chronic low back pain (CLBP). Overview of Literature: Among patients with CLBP, 20%-55% had NP. Methods: Patients older than 20 years with CLBP lasting for longer than three months, with a visual analog scale (VAS) pain score higher than four, and with pain medications being used for at least four weeks before enrollment were recruited from 27 general hospitals between December 2014 and May 2015...
December 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/29259574/the-relationship-between-binge-eating-disorder-and-suicidality-a-systematic-review
#10
REVIEW
Chiara Conti, Roberta Lanzara, Mattia Scipioni, Marzia Iasenza, Maria T Guagnano, Mario Fulcheri
Background: We carried out a systematic review analyzing the relation between binge eating disorder (BED), a recent addition to the eating disorders in DSM-5, and suicidality (i.e., suicidal ideation or attempted and/or committed suicide) by synthesizing the relevant studies' qualitative data. Methods: We conducted, according to PRISMA guidelines, a systematic search of the literature on PubMed, Scopus, ISI Web of Science, PsycINFO, Google Scholar, and ScienceDirect. Search terms were "binge eating disorder" combined with the "AND" Boolean operator and "suicid*...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29234563/postural-alterations-in-patients-with-subacromial-impingement-syndrome
#11
Omid Alizadehkhaiyat, Margaret M Roebuck, Ahmed T Makki, Simon P Frostick
Background: An aberrant upper body posture has been proposed as one of the etiological factors contributing to the development of subacromial impingement syndrome (SAIS). Clinicians have translated this supposition into assessment and rehabilitation programs despite insufficient and conflicting evidence to support this approach. Purpose: The purpose of this study was to compare several postural variables between the SAIS patients and asymptomatic healthy controls...
December 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29226977/mechanical-responses-of-the-mechanosensitive-unstructured-domains-in-cardiac-titin
#12
Si Ming Pang, Shimin Le, Jie Yan
BACKGROUND INFORMATION: Titin is one of the three main filaments in cardiac sarcomere. Besides a chain of immunoglobulin (Ig) domains, cardiac titin also contains a PEVK domain and a cardiac specific N2B domain, both are largely unstructured. While they are believed to be involved in the elastic (PEVK and N2B) and the trophic (N2B) functions of the heart, their mechanical responses in physiological level of forces remains poorly understood. RESULTS: In order to gain understanding on their mechanical responses, we used magnetic tweezers to investigate their force responses from 1 - 30 pN...
December 11, 2017: Biology of the Cell
https://www.readbyqxmd.com/read/29214686/myricetin-attenuated-lps-induced-cardiac-injury-in-vivo-and-in-vitro
#13
Nan Zhang, Hong Feng, Hai-Han Liao, Si Chen, Zheng Yang, Wei Deng, Qi-Zhu Tang
Sepsis induced myocardial dysfunction (SIMD) is a common complication and leads to an increased mortality. SIMD is closely related to inflammation and oxidative stress. Myricetin exhibits strong capacities of anti-inflammation and anti-oxidative stress, but its pharmacological effects for lipopolysaccharide (LPS) induced cardiac injury remains undefined. This study aimed to explore whether myricetin was efficient to alleviate SIMD in mice and neonatal rat cardiomyocytes injury. Mice administrated with myricetin (100 mg/kg, po, bid) or vehicle groups were challenged with LPS (10 mg/kg, ip), and cardiac functions examined by echocardiography after 12 hr LPS exposure...
December 7, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29210651/mir-25-mediates-retinal-degeneration-via-inhibiting-itgav-and-pedf-in-rat
#14
J Zhang, J Wang, L Zheng, M Wang, Y Lu, Z Li, C Lian, S Mao, X Hou, S Li, J Xu, H Tian, C Jin, F Gao, J Zhang, F Wang, W Li, L Lu, G-T Xu
Age-related macular degeneration (AMD) is the main cause of irreversible blindness in the elderly. Oxidative stress in retinal pigment epithelium (RPE) is deemed to play a pivotal role in the pathogenesis of AMD. miR-25 functions as an essential modulator in response to oxidative-stress in several cell types, but its function in RPE cells is poorly understood. Here, we reported that, in a rat model of retinal degeneration induced by sodium iodate (SI), oxidative stress up-regulated miR-25 in RPE cells in very early stage, accompanied by decreased phagocytosis and reduced growth factor secretion in those cells...
December 5, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/29210612/association-of-fine-motor-loss-and-allodynia-in-fibromyalgia-an-fnirs-study
#15
Aykut Eken, Didem Gökçay, Cemre Yılmaz, Bora Baskak, Ayşegül Baltacı, Murat Kara
Recent studies showed that fine motor control dysfunction was observed in fibromyalgia (FM) syndrome as well as allodynia. However, brain signatures of this association still remain unclear. In this study, finger tapping task (FTT) and median nerve stimulation (MNS) were applied to both hands of 15 FM patients and healthy controls (HC) to understand this relationship. Hemodynamic activity was measured simultaneously using functional near-infrared spectroscopy (fNIRS). Experiments were analyzed separately by using 2x2 repeated measures ANOVA...
December 6, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/29204685/methylene-blue-protects-the-isolated-rat-lungs-from-ischemia-reperfusion-injury-by-attenuating-mitochondrial-oxidative-damage
#16
Wen-Fang Tian, Si Zeng, Qiong Sheng, Jun-Liang Chen, Ping Weng, Xiao-Tong Zhang, Jia-Jia Yuan, Qing-Feng Pang, Zhi-Qiang Wang
INTRODUCTION: Impaired mitochondrial function is a key factor attributing to the lung ischemia reperfusion injury (LIRI). Methylene blue (MB) has been reported to attenuate brain and renal ischemia-reperfusion injury. We hypothesized that MB also could have a protective effect against LIRI by preventing mitochondrial oxidative damage. METHODS: Isolated rat lungs were assigned to the following four groups (n = 6): a sham group: perfusion for 105 min without ischemia; I/R group: shutoff of perfusion and ventilation for 45 min followed by reperfusion for 60 min; and I/R + MB group and I/R + glutathione (GSH) group: 2 mg/kg MB or 4 μM glutathione were intraperitoneally administered for 2 h, and followed by 45 min of ischemia and 60 min of reperfusion...
December 4, 2017: Lung
https://www.readbyqxmd.com/read/29185048/impaired-left-ventricular-diastolic-function-is-related-to-the-formation-of-left-ventricular-apical-thrombus-in-patients-with-acute-anterior-myocardial-infarction
#17
Ung Lim Choi, Jae-Hyeong Park, Byung Joo Sun, Jin Kyung Oh, Seok Woo Seong, Jae-Hwan Lee, Si Wan Choi, Jin-Ok Jeong, In Sun Kwon, In-Whan Seong
Left ventricular (LV) apical thrombus is a clinically important complication which can cause systemic embolization in patients with anterior acute myocardial infarction (AMI). Systolic dysfunction has been a risk factor for developing LV apical thrombus in AMI patients. However, the role of diastolic dysfunction in the development of LV apical thrombus in these patients is still unknown. We performed this study to evaluate whether diastolic dysfunction can influence the development of LV apical thrombus in anterior AMI patients...
November 28, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/29174781/utilization-of-veno-arterial-extracorporeal-membrane-oxygenation-for-massive-pulmonary-embolism
#18
Chetan Pasrija, Anthony Kronfli, Praveen George, Maxwell Raithel, Francesca Boulos, Daniel L Herr, James S Gammie, Si M Pham, Bartley P Griffith, Zachary N Kon
BACKGROUND: The management of massive pulmonary embolism remains challenging, with a considerable mortality rate. Although veno-arterial extracorporeal membrane oxygenation (VA-ECMO) for massive pulmonary embolism has been reported, its use as salvage therapy has been associated with poor outcomes. We reviewed our experience utilizing an aggressive, protocolized approach of VA-ECMO to triage, optimize, and treat these patients. METHODS: All patients with a massive pulmonary embolism who were placed on VA-ECMO, as an initial intervention determined by protocol, were retrospectively reviewed...
November 23, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29170652/characteristic-eye-movements-in-ataxia-telangiectasia-like-disorder-an-explanatory-hypothesis
#19
Pamela Federighi, Stefano Ramat, Francesca Rosini, Elena Pretegiani, Antonio Federico, Alessandra Rufa
Objective: To investigate cerebellar dysfunctions and quantitatively characterize specific oculomotor changes in ataxia-telangiectasia-like disorder (ATLD), a rare autosomal recessive disease caused by mutations in the MRE11 gene. Additionally, to further elucidate the pathophysiology of cerebellar damage in the ataxia-telangiectasia (AT) spectrum disorders. Methods: Saccade dynamics, metrics, and visual fixation deficits were investigated in two Italian adult siblings with genetically confirmed ATLD...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29143549/negative-impact-of-hyperglycaemia-on-mouse-alveolar-development
#20
Mei-Yao He, Guang Wang, Sha-Sha Han, Ke Li, Ya Jin, Meng Liu, Zhen-Peng Si, Ju Wang, Guo-Sheng Liu, Xuesong Yang
Diabetes mellitus in pregnancy has been known to affect the embryonic development of various systems, including cardiovascular and nervous systems. However, whether this disease could have a negative impact on embryonic respiratory system remains controversial. In this study, we demonstrated that pregestational diabetes mellitus (PGDM)-induced defects in lung development in mice are mainly characterized by the changes in the morphological structure of the lung. Immunostaining and Western blotting showed that proliferation increased and apoptosis decreased in PGDM...
November 16, 2017: Cell Cycle
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