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https://www.readbyqxmd.com/read/29770919/dl-propargylglycine-protects-against-myocardial-injury-induced-by-chronic-intermittent-hypoxia-through-inhibition-of-endoplasmic-reticulum-stress
#1
Xiufang Zhou, Si Tang, Ke Hu, Zhan Zhang, Pei Liu, Yuchuan Luo, Jing Kang, Lifang Xu
BACKGROUND: Chronic intermittent hypoxia (CIH), an important basis of the pathogenesis of organ damage induced by obstructive sleep apnea syndrome (OSAS), is associated with myocardial injury, such as left ventricular dysfunction, apoptosis, and oxidative stress. Endogenous hydrogen sulfide (H2 S) plays an important role in maintaining cardiovascular functions. Many studies have demonstrated that exogenous H2 S has protective effects against myocardial injury induced by various cardiovascular diseases, and inhibiting the generation of endogenous H2 S has opposite effects...
May 16, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29762054/altered-sarco-endo-plasmic-reticulum-calcium-adenosine-triphosphatase-2a-content-targets-for-heart-failure-therapy
#2
Gang Liu, Si Qi Li, Ping Ping Hu, Xiao Yong Tong
Sarco(endo)plasmic reticulum calcium adenosine triphosphatase is responsible for transporting cytosolic calcium into the sarcoplasmic reticulum and endoplasmic reticulum to maintain calcium homeostasis. Sarco(endo)plasmic reticulum calcium adenosine triphosphatase is the dominant isoform expressed in cardiac tissue, which is regulated by endogenous protein inhibitors, post-translational modifications, hormones as well as microRNAs. Dysfunction of sarco(endo)plasmic reticulum calcium adenosine triphosphatase is associated with heart failure, which makes sarco(endo)plasmic reticulum calcium adenosine triphosphatase a promising target for heart failure therapy...
May 1, 2018: Diabetes & Vascular Disease Research
https://www.readbyqxmd.com/read/29753417/persistent-depletion-of-plasma-gelsolin-pgsn-after-exposure-of-mice-to-heavy-silicon-ions
#3
Kanokporn Noy Rithidech, Paiboon Reungpatthanaphong, Montree Tungjai, Witawat Jangiam, Louise Honikel, Elbert B Whorton
Little is known about plasma proteins that can be used as biomarkers for early and late responses to radiation. The purpose of this study was to determine a link between depletion of plasma gelsolin (pGSN) and cell-death as well as inflammatory responses in the lung (one of the tissues known to be radiosensitive) of the same exposed CBA/CaJ mice after exposure to heavy silicon (28 Si) ions. To prevent the development of multiple organ dysfunctions, pGSN (an important component of the extracellular actin-scavenging system) is responsible for the removal of actin that is released into the circulation during inflammation and from dying cells...
May 2018: Life Sciences in Space Research
https://www.readbyqxmd.com/read/29749694/trimethylamine-n-oxide-promotes-brain-aging-and-cognitive-impairment-in-mice
#4
Dang Li, Yilang Ke, Rui Zhan, Changjie Liu, Mingming Zhao, Aiping Zeng, Xiaoyun Shi, Liang Ji, Si Cheng, Bing Pan, Lemin Zheng, Huashan Hong
Gut microbiota can influence the aging process and may modulate aging-related changes in cognitive function. Trimethylamine-N-oxide (TMAO), a metabolite of intestinal flora, has been shown to be closely associated with cardiovascular disease and other diseases. However, the relationship between TMAO and aging, especially brain aging, has not been fully elucidated. To explore the relationship between TMAO and brain aging, we analysed the plasma levels of TMAO in both humans and mice and administered exogenous TMAO to 24-week-old senescence-accelerated prone mouse strain 8 (SAMP8) and age-matched senescence-accelerated mouse resistant 1 (SAMR1) mice for 16 weeks...
May 10, 2018: Aging Cell
https://www.readbyqxmd.com/read/29729042/transgastric-reintervention-for-self-expandable-metallic-stent-dysfunction-following-eus-guided-hepaticogastrostomy
#5
Tesshin Ban, Hiroshi Kawakami, Yoshimasa Kubota
EUS-guided hepaticogastrostomy (EUS-HGS) using a self-expandable metallic stent (SEMS) is recognized as an alternative to transpapillary access for performing biliary drainage.1,2 However, reintervention to mitigate stent dysfunction remains challenging.3-5 Here, we present a case of successful transgastric exchange of occluded SEMS. A 53-year-old woman with pancreatic cancer was admitted with acute cholangitis. Five months before, she underwent EUS-HGS using partially covered SEMS (6 mm×12 cm Niti-STM S Biliary Stent; Taewoong Medical Co...
May 5, 2018: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/29719505/cellular-and-molecular-basis-of-neurodegeneration-in-parkinson-disease
#6
REVIEW
Xian-Si Zeng, Wen-Shuo Geng, Jin-Jing Jia, Lei Chen, Peng-Peng Zhang
It has been 200 years since Parkinson disease (PD) was described by Dr. Parkinson in 1817. The disease is the second most common neurodegenerative disease characterized by a progressive loss of dopaminergic neurons in the substantia nigra pars compacta. Although the pathogenesis of PD is still unknown, the research findings from scientists are conducive to understand the pathological mechanisms. It is well accepted that both genetic and environmental factors contribute to the onset of PD. In this review, we summarize the mutations of main seven genes (α-synuclein, LRRK2, PINK1, Parkin, DJ-1, VPS35 and GBA1) linked to PD, discuss the potential mechanisms for the loss of dopaminergic neurons (dopamine metabolism, mitochondrial dysfunction, endoplasmic reticulum stress, impaired autophagy, and deregulation of immunity) in PD, and expect the development direction for treatment of PD...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29709619/hematopoietic-insults-damage-bone-marrow-niche-by-activating-p53-in-vascular-endothelial-cells
#7
Sha Si, Yaeko Nakajima-Takagi, Takahito Iga, Mayoko Tsuji, Libo Hou, Motohiko Oshima, Shuhei Koide, Atsunori Saraya, Satoshi Yamazaki, Keiyo Takubo, Yoshiaki Kubota, Tohru Minamino, Atsushi Iwama
Hematopoietic stem cells (HSCs) are exposed to various insults, such as genotoxic stress, inflammation, and infection, which directly affect HSCs. These insults deplete HSCs, cause a functional decline in HSCs, and promote their aging and transformation. However, the impact of hematopoietic insults on niche cells remains largely unknown. We have previously reported that p53 is activated in blood vessels by various stresses, including hypoxia, inflammation, and aging, and contributes to tissue dysfunction and metabolic abnormalities...
April 27, 2018: Experimental Hematology
https://www.readbyqxmd.com/read/29698775/anti-inflammatory-and-immune-response-regulation-of-si-ni-san-in-2-4-dinitrochlorobenzene-induced-atopic-dermatitis-like-skin-dysfunction
#8
Hui-Jie Fan, Ze-Ping Xie, Zi-Wen Lu, Zhang-Bin Tan, Yi-Ming Bi, Ling-Peng Xie, Yu-Ting Wu, Wen-Tong Zhang, Kevin Liu-Kot, Bin Liu, Ying-Chun Zhou
ETHNOPHARMACOLOGICAL RELEVANCE: Si-Ni-San (SNS) is a well-known decoction in traditional Chinese medicine. Although studies have indicated that the anti-inflammatory and anti-allergic properties of SNS and its components can account for their therapeutic effects, the role and mechanism of SNS in treating skin dysfunction remain unclear. AIM OF THE STUDY: Atopic dermatitis (AD), a disorder known for its prevalence in infants and adults, severely influences the quality of life of affected patients...
April 23, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29690591/roles-of-pde1-in-pathological-cardiac-remodeling-and-dysfunction
#9
REVIEW
Si Chen, Walter E Knight, Chen Yan
Pathological cardiac hypertrophy and dysfunction is a response to various stress stimuli and can result in reduced cardiac output and heart failure. Cyclic nucleotide signaling regulates several cardiac functions including contractility, remodeling, and fibrosis. Cyclic nucleotide phosphodiesterases (PDEs), by catalyzing the hydrolysis of cyclic nucleotides, are critical in the homeostasis of intracellular cyclic nucleotide signaling and hold great therapeutic potential as drug targets. Recent studies have revealed that the inhibition of the PDE family member PDE1 plays a protective role in pathological cardiac remodeling and dysfunction by the modulation of distinct cyclic nucleotide signaling pathways...
April 23, 2018: Journal of Cardiovascular Development and Disease
https://www.readbyqxmd.com/read/29689442/ameliorating-mitochondrial-dysfunction-restores-carbon-ion-induced-cognitive-deficits-via-co-activation-of-nrf2-and-pink1-signaling-pathway
#10
Yang Liu, Jiawei Yan, Cao Sun, Guo Li, Sirui Li, Luwei Zhang, Cuixia Di, Lu Gan, Yupei Wang, Rong Zhou, Jing Si, Hong Zhang
Carbon ion therapy is a promising modality in radiotherapy to treat tumors, however, a potential risk of induction of late normal tissue damage should still be investigated and protected. The aim of the present study was to explore the long-term cognitive deficits provoked by a high-linear energy transfer (high-LET) carbon ions in mice by targeting to hippocampus which plays a crucial role in memory and learning. Our data showed that, one month after 4 Gy carbon ion exposure, carbon ion irradiation conspicuously resulted in the impaired cognitive performance, neurodegeneration and neuronal cell death, as well as the reduced mitochondrial integrity, the disrupted activities of tricarboxylic acid cycle flux and electron transport chain, and the depressed antioxidant defense system, consequently leading to a decline of ATP production and persistent oxidative damage in the hippocampus region...
April 14, 2018: Redox Biology
https://www.readbyqxmd.com/read/29689277/butyrate-ameliorated-nlrc3-protects-the-intestinal-barrier-in-a-gpr43-dependent-manner
#11
Di Cheng, Ji-Hao Xu, Jie-Yao Li, Si-Yi Wang, Ting-Feng Wu, Qi-Kui Chen, Tao Yu
BACKGROUND: Intestinal barrier dysfunctions are related to dysbacteriosis and chronic gut inflammation in type 2 diabetes. Although there is emerging evidence that the chronic gut inflammatory response is stimulated by nucleotide-binding oligomerization domain-like receptors (NLRs), the relationship and precise mechanism between NLRC3 and the colonic epithelial barrier remains largely elusive. METHODS: We investigated the function and mechanism of NLRC3 in the colonic tissues of diabetic mice and colonic epithelial cell lines...
April 21, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29680209/6-formylindolo-3-2-b-carbazole-induced-aryl-hydrocarbon-receptor-activation-prevents-intestinal-barrier-dysfunction-through-regulation-of-claudin-2-expression
#12
Yuanhang Ma, Qimeng Wang, Kun Yu, Xin Fan, Weidong Xiao, Yujiao Cai, Pengyuan Xu, Min Yu, Hua Yang
6-formylindolo (3,2-b) carbazole (FICZ), a high-affinity aryl hydrocarbon receptor (AhR) ligand, plays a protective role in inflammatory bowel disease (IBD) through activation of AhR. Interleukin-6 (IL-6) induced intestinal epithelial barrier dysfunction is involved in the pathological process of IBD. In this study, we investigated the protective effects of FICZ on IL-6 induced intestinal epithelial barrier injury. Our data show that AhR activation by FICZ ameliorated colonic inflammation, decreased IL-6 and claudin-2 expression, and maintained intestinal barrier function in a mouse model of dextran sulphate sodium (DSS)-induced colitis...
April 19, 2018: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29674852/long-term-prospective-outcomes-after-minimally-invasive-trans-iliac-sacroiliac-joint-fusion-using-triangular-titanium-implants
#13
Emily Darr, S Craig Meyer, Peter G Whang, Don Kovalsky, Clay Frank, Harry Lockstadt, Robert Limoni, Andy Redmond, Philip Ploska, Michael Y Oh, Daniel Cher, Abhineet Chowdhary
Background: Minimally invasive sacroiliac joint fusion (SIJF) has become an increasingly accepted surgical option for chronic sacroiliac (SI) joint dysfunction, a prevalent cause of unremitting low back/buttock pain. Objective: The objective of this study was to report clinical and functional outcomes of SIJF using triangular titanium implants (TTI) in the treatment of chronic SI joint dysfunction due to degenerative sacroiliitis or sacroiliac joint (SIJ) disruption at 3 years postoperatively...
2018: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/29670566/non-motor-symptoms-of-parkinson-s-disease-and-their-impact-on-quality-of-life-in-a-cohort-of-moroccan-patients
#14
Houyam Tibar, Khalil El Bayad, Ahmed Bouhouche, El Hachmia Ait Ben Haddou, Ali Benomar, Mohamed Yahyaoui, Abdelhamid Benazzouz, Wafa Regragui
Background: Non-motor symptoms (NMSs) are a real burden in Parkinson's disease (PD). They may appear in early pre-symptomatic stage as well as throughout the disease course. However, their relationship with the deterioration of the patient's quality of life (QoL) is still under debate. This study aimed to investigate the prevalence of NMSs and their impact on the QoL in a cohort of Moroccan patients. Methods: We carried out a cross-transactional study, where a total of 117 patients were submitted to a structured clinical interview and examination investigating motor and NMSs based on common and conventional scales...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29668625/lncrna-enst00113-promotes-proliferation-survival-and-migration-by-activating-pi3k-akt-mtor-signaling-pathway-in-atherosclerosis
#15
Xinliang Yao, Chengyun Yan, Lei Zhang, Yanming Li, Qilin Wan
BACKGROUND: Atherosclerosis is one of the most common cardiovascular disorders. The dysfunction of vascular smooth muscle cells (VSMCs) and endothelial cells (ECs) are 2 key factors in the formation of atherosclerosis. This study aims to find strategies to prevent VSMCs and ECs dysfunction for the treatment of atherosclerosis. METHODS: We investigated the expression patterns of long noncoding RNAs (lncRNAs) in 2 pairs of serum samples from both atherosclerosis patients and healthy volunteers through microarray analysis...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29659123/advanced-oxidation-protein-products-induce-pre-osteoblast-apoptosis-through-a-nicotinamide-adenine-dinucleotide-phosphate-oxidase-dependent-mitogen-activated-protein-kinases-mediated-intrinsic-apoptosis-pathway
#16
Si-Yuan Zhu, Jing-Shen Zhuang, Qian Wu, Zhong-Yuan Liu, Cong-Rui Liao, Shi-Gan Luo, Jian-Ting Chen, Zhao-Ming Zhong
Osteoblast apoptosis contributes to age-related bone loss. Advanced oxidation protein products (AOPPs) are recognized as the markers of oxidative stress and potent inducers of apoptosis. We have demonstrated that AOPP accumulation was correlated with age-related bone loss. However, the effect of AOPPs on the osteoblast apoptosis still remains unknown. Exposure of osteoblastic MC3T3-E1 cells to AOPPs caused the excessive generation of reactive oxygen species (ROS) by activating nicotinamide adenine dinucleotide phosphate (NADPH) oxidases...
April 16, 2018: Aging Cell
https://www.readbyqxmd.com/read/29655602/overexpression-of-ctrp3-protects-against-sepsis-induced-myocardial-dysfunction-in-mice
#17
Wen-Ying Wei, Zhen-Guo Ma, Ning Zhang, Si-Chi Xu, Yu-Pei Yuan, Xiao-Feng Zeng, Qi-Zhu Tang
C1q/tumor necrosis factor-related protein-3 (CTRP3) shows striking homologies of genomic structure to the adiponectin. In this study, we aimed to investigate the protective role of CTRP3 against sepsis-induced cardiomyopathy. Here, we overexpressed CTRP3 in myocardium by direct intramyocardial injection and constructed a model of lipopolysaccharide (LPS)-induced sepsis in mice. Our results demonstrated that cardiac-specific overexpression of CTRP3 remarkably attenuated myocardial dysfunction and increased the phosphorylation level of AMPKα during LPS-induced sepsis...
April 12, 2018: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29574551/the-dysfunction-of-the-cerebellum-and-its-cerebellum-reward-sensorimotor-loops-in-chronic-spontaneous-urticaria
#18
Yuming Wang, Jiliang Fang, Ping Song, Yan Bao, Wenwen Song, Jiao Liu, Courtney Lang, Kristen Jorgenson, Minyoung Jung, Dong Shen, Shasha Li, Ruirui Sun, Xu Ding, Jiao Yang, Xiao Meng, Ning Wang, Zhifang Yan, Yuhe Yan, Qian Kong, Ying Dong, Fangyuan Cui, Yiheng Tu, Bingnan Cui, Jian Kong
Chronic spontaneous urticaria (CSU) is a common itchy skin disease. Despite its prevalence, the neuropathology of CSU is uncertain. In this study, we explored resting state functional connectivity (rs-FC) changes in CSU, as well as how the symptom changes following intervention can modulate rs-FC. Forty patients and 40 healthy controls (HCs) were recruited. Following an intervention, 32 patients participated in a second scan approximately 6 weeks after the first scan. Compared with healthy controls, CSU subjects exhibited higher regional homogeneity (ReHo) values in the cerebellum, which were positively associated with urticaria activity scores over 7 days (UAS7) at baseline...
March 24, 2018: Cerebellum
https://www.readbyqxmd.com/read/29571823/dexmedetomidine-promotes-the-recovery-of-neurogenesis-in-aged-mouse-with-postoperative-cognitive-dysfunction
#19
Wen-Xiang Wang, Qiong Wu, Si-Si Liang, Xue-Kang Zhang, Qian Hu, Qiu-Hong Chen, Hai-Jin Huang, Lin Xu, Fo-Quan Lou
Recently, growing evidence has demonstrated Dexmedetomidine (Dex) a promising intervene preventing postoperative cognitive decline (POCD) following surgery, which is associated with neuroinflammation leading to neuronal apoptosis and deregulated neurogenesis. Previous studies suggested the anti-inflammation and anti-neuroapoptosis action of Dex. Therefore we hypothesize the promoting neurogenesis of Dex linked to stimulating BDNF and subsequent p-MPAK production in a rat model of POCD. In the present study, the POCD animal model was established by performing an exploratory laparotomy under isoflurane anaesthesia in old rats, utilizing which Dex response is confirmed by behavioural tests...
March 20, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29543662/perioperative-ocular-parameters-associated-with-persistent-dry-eye-symptoms-after-cataract-surgery
#20
Young Joon Choi, Si Yoon Park, Ikhyun Jun, Moonjung Choi, Kyoung Yul Seo, Eung Kweon Kim, Tae-Im Kim
PURPOSE: To evaluate perioperative dry eye (DE) syndrome and meibomian gland dysfunction (MGD) parameters associated with persistent DE symptoms after cataract surgery. METHODS: We enrolled patients who underwent uncomplicated cataract surgery without previous ocular comorbidities and previous use of ophthalmic treatment except for artificial tears at a single tertiary hospital. Lipid layer thickness, meibomian gland (MG) dropout, tear breakup time, Oxford staining score, lid margin abnormality, meibum quality, meibum expressibility, MG orifice obstruction, MGD stage, Ocular Surface Disease Index (OSDI), and Schirmer test score were prospectively assessed in order at baseline and 1 and 3 months postoperative...
June 2018: Cornea
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