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https://www.readbyqxmd.com/read/28434165/connexin-hemichannels-in-astrocytes-an-assessment-of-controversies-regarding-their-functional-characteristics
#1
Brian Skriver Nielsen, Daniel Bloch Hansen, Bruce R Ransom, Morten Schak Nielsen, Nanna MacAulay
Astrocytes in the mammalian central nervous system are interconnected by gap junctions made from connexins of the subtypes Cx30 and Cx43. These proteins may exist as hemichannels in the plasma membrane in the absence of a 'docked' counterpart on the neighboring cell. A variety of stimuli are reported to open the hemichannels and thereby create a permeation pathway through the plasma membrane. Cx30 and Cx43 have, in their hemichannel configuration, been proposed to act as ion channels and membrane pathways for different molecules, such as fluorescent dyes, ATP, prostaglandins, and glutamate...
April 22, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28433945/cqmuh-011-a-novel-adamantane-sulfonamide-compound-inhibits-lipopolysaccharide-and-d-galactosamine-induced-fulminant-hepatic-failure-in-mice
#2
Liping Yan, Xiangnan Hu, Qihong Wu, Rong Jiang, Sisi Zhang, Qiao Ling, Hailin Liu, Xuejun Jiang, Jingyuan Wan, Yingju Liu
CQMUH-011, a novel adamantane sulfonamide compound, was shown to suppress macrophage activation and proliferation in our previous study. However, it is unknown whether CQMUH-011 has anti-inflammatory and hepatoprotective properties. In this study, we investigated the potential effects and mechanisms of CQMUH-011 on lipopolysaccharide (LPS)-induced RAW264.7 cell activation in vitro and LPS- and D-galactosamine (D-GalN)-induced fulminant hepatic failure (FHF) in vivo. The results showed that in RAW264.7 cells challenged by LPS, CQMUH-011 inhibited cell proliferation and induced cell cycle arrest and apoptosis...
April 20, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28432421/the-effect-of-nitric-oxide-synthase-inhibition-with-and-without-inhibition-of-prostaglandins-on-blood-flow-in-different-human-skeletal-muscles
#3
Ilkka Heinonen, Bengt Saltin, Ylva Hellsten, Kari K Kalliokoski
PURPOSE: Animal studies suggest that the inhibition of nitric oxide synthase (NOS) affects blood flow differently in different skeletal muscles according to their muscle fibre type composition (oxidative vs glycolytic). Quadriceps femoris (QF) muscle consists of four different muscle parts: vastus intermedius (VI), rectus femoris (RF), vastus medialis (VM), and vastus lateralis (VL) of which VI is located deep within the muscle group and is generally regarded to consist mostly of oxidative muscle fibres...
April 21, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28431615/association-between-ptgs1-polymorphisms-and-functional-outcomes-in-chinese-patients-with-stroke-during-aspirin-therapy-interaction-with-smoking
#4
Huan Cai, Biyang Cai, Lingli Sun, Hao Zhang, Shuyu Zhou, Liping Cao, Hongquan Guo, Wen Sun, Bernard Yan, Stephen M Davis, Zhizhong Zhang, Xinfeng Liu
PURPOSE: Prostaglandin-Endoperoxide Synthase 1 (PTGS1) and smoking may play important roles in aspirin nonresponsiveness, but the effect of their interaction on stroke outcomes remains largely unknown. We examined the effects of PTGS1 polymorphisms, smoking status, and their interaction on functional outcomes in a cohort of Chinese Han patients with stroke during aspirin therapy. METHODS: A total of 617 ischemic stroke patients taking aspirin were enrolled. Three single nucleotide polymorphisms (SNPs) rs1330344, rs3842788, and rs5788 in PTGS1 were determined for genotyping...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28431181/protective-effect-of-mesenchymal-stem-cells-against-the-development-of-intracranial-aneurysm-rupture-in-mice
#5
Atsushi Kuwabara, Jia Liu, Yoshinobu Kamio, Airan Liu, Michael T Lawton, Jae-Woo Lee, Tomoki Hashimoto
BACKGROUND: Mesenchymal stem cells (MSCs) are multipotent stem or stromal cells found in multiple tissues. Intravenous MSC injections have been used to treat various diseases with an inflammatory component in animals and humans. Inflammation is emerging as a key component of pathophysiology of intracranial aneurysms. Modulation of inflammation by MSCs may affect sustained inflammatory processes that lead to aneurysmal rupture. OBJECTIVE: To assess the effect of MSCs on the development of aneurysm rupture using a mouse model...
April 19, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28430965/nrf2-regulates-the-inflammatory-response-including-heme-oxygenase-1-induction-by-mycoplasma-pneumoniae-lipid-associated-membrane-proteins-in-thp-1-cells
#6
Jihong Hu, Chunyan Chen, Guangli Ou, Xiaoxing You, Tianping Tan, Xinnian Hu, Yihua Zeng, Minjun Yu, Cuiming Zhu
A series of inflammatory responses caused by Mycoplasma pneumoniae largely depend on the lipid-associated membrane proteins (LAMPs). Nuclear factor E2-related factor 2 (Nrf2), a transcription factor, is considered to be a critical modulator of inflammatory responses and cellular redox homeostasis. Monocytes play an important role in the invasion and immunity to resist pathogens. Here, we investigated the role of Nrf2 in the anti-inflammatory response stimulated by LAMPs using the human monocyte cell line THP-1...
April 18, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28430684/flurbiprofen-axetil-provides-effective-analgesia-without-changing-the-pregnancy-rate-in-ultrasound-guided-transvaginal-oocyte-retrieval-a-double-blind-randomized-controlled-trial
#7
Hong Zhao, Yi Feng, Yan Jiang, Qun Lu
BACKGROUND: In this prospective double-blind randomized study, we evaluated the analgesic effect and potential effect on pregnancy rate of the nonsteroidal anti-inflammatory drug flurbiprofen axetil in patients undergoing ultrasound-guided transvaginal oocyte retrieval under propofol-remifentanil anesthesia. METHODS: A total of 200 patients scheduled to undergo ultrasound-guided transvaginal oocyte retrieval were randomly allocated to receive 1.5 mg/kg of flurbiprofen axetil (FA group) or placebo (control group) 30 minutes before the procedure...
April 19, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28428708/indoleamine-2-3-dioxygenase-as-a-potential-prognostic-marker-and-immunotherapeutic-target-for-hepatocellular-carcinoma
#8
REVIEW
Kashif Asghar, Asim Farooq, Bilal Zulfiqar, Muhammad Usman Rashid
Tumor cells induce an immunosuppressive microenvironment which leads towards tumor immune escape. Understanding the intricacy of immunomodulation by tumor cells is essential for immunotherapy. Indoleamine 2,3-dioxygenase (IDO) is an immunosuppressive enzyme which mediates tumor immune escape in various cancers including hepatocellular carcinoma (HCC). IDO up-regulation in HCC may lead to recruitment of regulatory T-cells into tumor microenvironment and therefore inhibit local immune responses and promote metastasis...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28428256/regulation-of-lung-endothelial-permeability-and-inflammatory-responses-by-prostaglandin-a2-role-of-ep4-receptor
#9
Tomomi Ohmura, Yufeng Tian, Nicolene Sarich, Yunbo Ke, Angelo Meliton, Alok S Shah, Katrin Andreasson, Konstantin G Birukov, Anna A Birukova
A role of prostaglandin A2 (PGA2) in modulation of vascular endothelial function remains unknown. We investigated effects of PGA2 on pulmonary endothelial cell (EC) permeability and inflammatory activation and identified a receptor mediating these effects. PGA2 enhanced the EC barrier and protected against barrier dysfunction caused by vasoactive peptide thrombin and proinflammatory bacterial wall lipopolysacharide (LPS). Receptor screening using pharmacologic and molecular inhibitory approaches identified EP4 as a novel PGA2 receptor...
April 20, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28428124/induction-of-labour-at-term-in-breech-presentations-experience-of-a-french-level-ii-b-maternity-unit
#10
Adélaïde Jarniat, Vinciane Eluard, Olivia Matz, Pascal Calmelet, Astrid Calmelet, Patrick Dellinger, Paul Sagot
Data from the literature on induction of labour in breech presentation are rare and no conclusions can be drawn for this procedure. OBJECTIVES: To evaluate obstetrical and neonatal prognosis following induced labour in breech deliveries at term (37 to 42 weeks of gestation). METHODS: We conducted a single-centre retrospective case-control study in a level II B maternity unit from 1(st) January 2012 to 31(st) December 2015. The inclusion criteria were a singleton pregnancy and a breech presentation...
April 17, 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28426090/oleuropein-down-regulated-il-1%C3%AE-induced-inflammation-and-oxidative-stress-in-human-synovial-fibroblast-cell-line-sw982
#11
Maria Luisa Castejón, Maria Ángeles Rosillo, Tatiana Montoya, Alejandro González-Benjumea, Jose Maria Fernández-Bolaños, Catalina Alarcón-de-la-Lastra
Rheumatoid arthritis (RA) is a chronic and systemic inflammatory autoimmune disease mainly characterized by aggressive hyperproliferation of synovial fibroblasts (SFs). It is accompained by a massive infiltration of inflammatory immune cells inducing progressive matrix degradation, destruction of cartilage and bone erosion through the production of inflammatory mediators. Oleuropein is the most prevalent phenolic component in olive leaves, seed, pulp and peel of unripe olives and is responsible for the characteristic bitter taste of unprocessed olives...
April 20, 2017: Food & Function
https://www.readbyqxmd.com/read/28425581/clinical-biochemical-and-genetic-features-of-41-han-chinese-families-with-primary-hypertrophic-osteoarthropathy-and-their-therapeutic-response-to-etoricoxib-results-from-a-6-months-prospective-clinical-intervention
#12
Shan-Shan Li, Jin-We He, Wen-Zhen Fu, Yu-Juan Liu, Yun-Qiu Hu, Zhen-Lin Zhang
Primary hypertrophic osteoarthropathy (PHO) is a rare inherited disease caused by genetic defects in prostaglandin metabolism pathway; disturbed prostaglandin E2 (PGE2 ) catabolism resulting in increased PGE2 levels is suggested in the pathogenesis. Forty-three Han Chinese patients with PHO were studied and 41 of them were treated. Mutations in HPGD gene, causing hypertrophic osteoarthropathy, primary, autosomal recessive 1 (PHOAR1; OMIM 259100), were identified in 7 patients, and mutations in SLCO2A1 gene, causing hypertrophic osteoarthropathy, primary, autosomal recessive 2 (PHOAR2; OMIM 614441), were identified in 36 patients...
April 20, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28423583/the-protection-of-meloxicam-against-chronic-aluminium-overload-induced-liver-injury-in-rats
#13
Yang Yang, Qin He, Hong Wang, Xinyue Hu, Ying Luo, Guojuan Liang, Shengnan Kuang, Shaoshan Mai, Jie Ma, Xiaoyan Tian, Qi Chen, Junqing Yang
The present study was designed to observe the protective effect and mechanisms of meloxicam on liver injury caused by chronic aluminium exposure in rats. The histopathology was detected by hematoxylin-eosin staining. The levels of prostaglandin E2, cyclic adenosine monophosphate and inflammatory cytokines were detected by enzyme linked immunosorbent assay. The expressions of cyclooxygenases-2, prostaglandin E2 receptors and protein kinase A were measured by western blotting and immunohistochemistry. Our experimental results showed that aluminium overload significantly damaged the liver...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423012/15-hydroxyprostaglandin-dehydrogenase-15-pgdh-prevents-lipopolysaccharide-lps-induced-acute-liver-injury
#14
Lu Yao, Weina Chen, Kyoungsub Song, Chang Han, Chandrashekhar R Gandhi, Kyu Lim, Tong Wu
The NAD+-dependent 15-hydroxyprostaglandin dehydrogenase (15-PGDH) catalyzes the oxidation of the 15(S)-hydroxyl group of prostaglandin E2 (PGE2), converting the pro-inflammatory PGE2 to the anti-inflammatory 15-keto-PGE2 (an endogenous ligand for peroxisome proliferator-activated receptor-gamma [PPAR-γ]). To evaluate the significance of 15-PGDH/15-keto-PGE2 cascade in liver inflammation and tissue injury, we generated transgenic mice with targeted expression of 15-PGDH in the liver (15-PGDH Tg) and the animals were subjected to lipopolysaccharide (LPS)/Galactosamine (GalN)-induced acute liver inflammation and injury...
2017: PloS One
https://www.readbyqxmd.com/read/28423001/pre-hatching-embryo-dependent-and-independent-programming-of-endometrial-function-in-cattle
#15
Mariana Sponchiado, Nathália Souza Gomes, Patrícia Kubo Fontes, Thiago Martins, Maite Del Collado, Athos de Assumpção Pastore, Guilherme Pugliesi, Marcelo Fábio Gouveia Nogueira, Mario Binelli
The bovine pre-implantation embryo secretes bioactive molecules from early development stages, but effects on endometrial function are reported to start only after elongation. Here, we interrogated spatially defined regions of the endometrium transcriptome for responses to a day 7 embryo in vivo. We hypothesize that exposure to an embryo changes the abundance of specific transcripts in the cranial region of the pregnant uterine horn. Endometrium was collected from the uterotubal junction (UTJ), anterior (IA), medial (IM) and posterior (IP) regions of the uterine horn ipsilateral to the CL 7 days after estrus from sham-inseminated (Con) or artificially inseminated, confirmed pregnant (Preg) cows...
2017: PloS One
https://www.readbyqxmd.com/read/28420857/usefulness-of-anti-rabphilin-3a-antibodies-for-diagnosing-central-diabetes-insipidus-in-the-third-trimester-of-pregnancy
#16
Kanako Sakurai, Rika Yamashita, Satsuki Niituma, Shintaro Iwama, Yoshihisa Sugimura, Zenei Arihara, Kazuhiro Takahashi
We report a 27-year-old pregnant woman with polyuria, polydipsia and headache in the third trimester of pregnancy. Hypernatremia (153 mEq/L), high plasma osmolality (300 mOsm/kgH2O) and low urinary osmolality (92 mOsm/kgH2O) were observed at the admission to our hospital. Plasma arginine vasopressin (AVP) level was inappropriately low (2.2 pg/mL) compared to the high plasma osmolality. Plasma AVP responses to hypertonic-saline infusion were blunted, and her urine osmolality increased in response to desmopressin...
April 14, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28419443/loss-of-natural-killer-t-nkt-cells-promotes-pancreatic-cancer-in-lsl-kras-g12d-mice
#17
Naveena B Janakiram, Altaf Mohammed, Taylor Bryant, Rebekah Ritchie, Nicole Stratton, Lydgia Jackson, Stan Lightfoot, Doris M Benbrook, Adam Asch, Mark L Lang, Chinthalapally V Rao
Role of unique T cell population, Natural Killer T (NKT) cells which have similar functions like NK cells in PC is not yet evaluated. In order to address the regulatory roles of NKT cells on tumor progression through tumor-associated macrophages (TAM) and their production of microsomal prostaglandin E synthase-1 (mPGES-1) and 5-lipoxygenase (5-LOX) in (Kras)-driven pancreatic tumor (KPT) progression, we crossed CD1d(-/-) mice deficient in both iNKT and vNKT cells with the Kras(G12D) mice. Loss of NKT cells significantly increased pancreatic intraepithelial neoplasia lesions [PanINs] and also increased 5-LOX and mPGES-1 expressions in M2 type macrophages and cancer stem like cells in pancreatic tumors...
April 18, 2017: Immunology
https://www.readbyqxmd.com/read/28419378/arsenic-induced-testicular-toxicity-in-gallus-gallus-expressions-of-inflammatory-cytokines-and-heat-shock-proteins
#18
Xiao Sun, Siwen Li, Ying He, Hongjing Zhao, Yu Wang, Xiangwei Zeng, Mingwei Xing
The aim of the study is to investigate the effects of sub-chronic poisoning with arsenic on the testes of chickens treated. Seventy-two 1-day-old chickens were randomly divided into 4 groups and provided food with different doses arsenic. The histological changes were examined. The mRNA levels of inflammatory factors, including transcription factor nuclear factor-κB (NF-κB), tumor necrosis factor-α (TNF-α), inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), prostaglandin E synthase (PTGEs), and heat shock proteins (Hsps), including Hsp70, Hsp90, Hsp60, Hsp40, and Hsp27 were assessed by quantitative real-time PCR in the testes of chickens...
April 17, 2017: Poultry Science
https://www.readbyqxmd.com/read/28418604/loss-of-ink4a-arf-gene-enhances-ultraviolet-radiation-induced-cutaneous-tumor-development
#19
Israr Ahmad, Purushotham Guroji, Amanda H DeBrot, Padma P Manapragada, Santosh K Katiyar, Craig A Elmets, Nabiha Yusuf
The CDKN2A locus encodes for tumor suppressor genes p16(INK)(4a) and p14(Arf) which are frequently inactivated in human skin tumors. The purpose of this study was to determine the relationship between loss of INK4a/Arf activity and inflammation in the development of ultraviolet (UV) radiation-induced skin tumors. Panels of INK4a/Arf(-/-) mice and wild type (WT) mice were treated with a single dose of UVB (200 mJ/cm(2) ). For long-term studies, these mice were irradiated with UVB (200 mJ/cm(2) ) three times weekly for 30 weeks...
April 18, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28417056/therapeutic-effect-of-prostaglandin-e1-in-monocrotaline-induced-pulmonary-arterial-hypertension-rats
#20
Jae Chul Lee
Pulmonary arterial hypertension (PAH) is a severe pulmonary vascular disease characterized by sustained increase in pulmonary arterial pressure and excessive thickening and remodeling of distal small pulmonary arteries. During disease progression, PAH include increase in mean pulmonary arterial pressure, right ventricular (RV) enlargement, increased pulmonary vascular resistance, and smooth muscle hypertrophy in pulmonary arterioles. Several anti-PAH therapies targeting various pathways involved in PAH progression have been approved by the Food and Drug Adminstration...
March 2017: Anatomy & Cell Biology
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