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https://www.readbyqxmd.com/read/29156760/microrna-29a-increased-the-intestinal-membrane-permeability-of-colonic-epithelial-cells-in-irritable-bowel-syndrome-rats
#1
Guanqun Chao, Yingying Wang, Shuo Zhang, Weilin Yang, Zheying Ni, Xuliang Zheng
Background: The whole pathogenesis of diarrhea-predominant irritable bowel syndrome(IBS-D) is poorly understood. Our goal was to evaluate the expression change of microRNA-29a(miR-29a) in colonic epithelial cells in IBS rats and clarify the mechanism of miR-29a increasing the intestinal membrane permeability through aquaporins(AQPs). Methods: The IBS-D rats models were induced by rectal distention pressure combining with extremities constraint. The colonic epithelial cells were divided into four groups...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29149713/adult-exposure-to-bisphenol-a-in-rare-minnow-gobiocypris-rarus-reduces-sperm-quality-with-disruption-of-testicular-aquaporins
#2
Yingying Zhang, Yongjing Guan, Ting Zhang, Cong Yuan, Yan Liu, Zaizhao Wang
Bisphenol A (BPA) is an endocrine disrupter which has adverse effects on male reproduction. Aquaporins (AQPs), well known water-selective channels, play important roles in spermatogenesis and sperm functions. However, whether AQPs participate in the process that BPA induces abnormal sperms has not been investigated to date. In the present study, adult male rare minnows Gobiocypris rarus were exposed to environmentally relevant concentrations BPA (15 and 225 μg/L) for 1, 2 and 3 weeks. Results showed that BPA exposure disrupted sperm motility, increased the percentage of abnormal sperm cells, and decreased sperm tolerance to hypotonic solution and sperm fertilization capacity...
November 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/29133107/paraneoplastic-neuromyelitis-optica-spectrum-disorder-a-case-report-and-review-of-the-literature
#3
REVIEW
Ádám Annus, Krisztina Bencsik, Izabella Obál, Zsigmond Tamás Kincses, László Tiszlavicz, Romana Höftberger, László Vécsei
Neuromyelitis optica spectrum disorders (NMOSD) are demyelinating, autoimmune diseases affecting the central nervous system. Typically, recurrent optic neuritis and longitudinal extensive transverse myelitis dominates the clinical picture. In most cases NMOSD are associated with autoantibodies targeting the water channel aquaporin-4 (AQP-4). NMOSD usually present in young adults. Clinical findings suggestive of NMOSD in elderly patients should raise the suspicion of a paraneoplastic etiology. To our knowledge, we report the first case of a 66 year-old female patient with paraneoplastic NMOSD that is associated with squamous cell lung carcinoma...
November 10, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29129744/upregulation-of-aquaporin-3-expression-by-diterpenoids-in-euphorbia-pekinensis-is-associated-with-activation-of-the-nf-%C3%AE%C2%BAb-signaling-pathway-in-the-co-culture-system-of-ht-29-and-raw-264-7%C3%A2-cells
#4
Hongli Yu, Lian Liu, Kuilong Wang, Hao Wu, Wei Wang, Xingde Zhang, Guojing Cui, Xiaobing Cui, Jianyu Huang
This study was designed to evaluate the toxic effects of diterpenoids separated from the roots of Euphorbia pekinensis, a type of widely used traditional Chinese medicine. This herb has intestinal toxicity associated with its complex diterpenoids. In this study, the diterpenoids (pekinenin A, pekinenin C, pekinenin F, pekinenin G, yuexiandajisu A, (-)-(1S)-15-hydroxy-18-carboxycembrene) elevated the expression of interleukin 1 beta and tumor necrosis factor alpha in a dose-dependent manner at doses of 6.25, 12...
November 9, 2017: Biochimie
https://www.readbyqxmd.com/read/29116096/aqp3-is-regulated-by-ppar%C3%AE-and-jnk-in-hepatic-stellate-cells-carrying-pnpla3-i148m
#5
Matteo Tardelli, Francesca V Bruschi, Thierry Claudel, Veronica Moreno-Viedma, Emina Halilbasic, Fabio Marra, Merima Herac, Thomas M Stulnig, Michael Trauner
Aquaglyceroporins (AQPs) allow the movement of glycerol that is required for triglyceride formation in hepatic stellate cells (HSC), as key cellular source of fibrogenesis in the liver. The genetic polymorphism I148M of the patatin-like phospholipase domain-containing 3 (PNPLA3) is associated with hepatic steatosis and its progression to steatohepatitis (NASH), fibrosis and cancer. We aimed to explore the role of AQP3 for HSC activation and unveil its potential interactions with PNPLA3. HSC were isolated from human liver, experiments were performed in primary HSC and human HSC line LX2...
November 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29112967/expression-patterns-of-conjunctival-mucin-5ac-and-aquaporin-5-in-response-to-acute-dry-eye-stress
#6
Dhruva Bhattacharya, Li Yu, Mingwu Wang
The relationship between aquaporin (AQP) 5 and mucin (MUC) 5AC in the conjunctiva was investigated in response to acute dry eye (DE) stress. A mixed-mechanism rabbit DE model, in which the main lacrimal gland, Harderian gland, and nictitating membrane were resected, was further explored in this study. Conjunctival impression cytology specimens were harvested before excision (BE) and up to 3 months after excision (AE) in 8 (16 eyes) male New Zealand White rabbits, and immunoblotting was employed to assess the expression of AQP5 and MUC5AC...
2017: PloS One
https://www.readbyqxmd.com/read/29107023/intermittent-hypoxia-alters-dose-dependent-caffeine-effects-on-renal-prostanoids-and-receptors-in-neonatal-rats
#7
Kay D Beharry, Charles L Cai, Kultida Soontarapornchai, Taimur Ahmad, Gloria B Valencia, Jacob V Aranda
Caffeine, one of the most commonly prescribed drugs in preterm neonates, is given in standard or suprapharmacologic doses. Although known as a diuretic, its effects in the neonatal kidneys are not well studied. We tested the hypothesis that neonatal intermittent hypoxia (IH) and high caffeine doses (HCD) alter renal regulators of vasomotor tone and water balance. Newborn rats were randomized to room air, hyperoxia, or IH and treated with standard or high caffeine doses; or placebo saline. Renal prostanoids; histopathology; and cyclooxygenase (COX), prostanoid receptor, and aquaporin (AQP) immunoreactivity were determined...
October 26, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/29106595/prognostic-implication-of-aquaporin-1-overexpression-in-resected-lung-adenocarcinoma
#8
Guido Bellezza, Jacopo Vannucci, Fortunato Bianconi, Giulio Metro, Rachele Del Sordo, Marco Andolfi, Ivana Ferri, Paola Siccu, Vienna Ludovini, Francesco Puma, Angelo Sidoni, Lucio Cagini
OBJECTIVES: Aquaporins (AQPs) are a group of transmembrane water-selective channel proteins thought to play a role in the regulation of water permeability for plasma membranes. Indeed, high AQP levels have been suggested to promote the progression, invasion and metastasis of tumours. Specifically, AQP1 and AQP5 overexpression in lung adenocarcinoma (AC) have been suggested to be involved in molecular mechanisms in lung cancer. The aim of this retrospective cohort single-centre study was to assess both the levels of expression and therein the prognostic significance, regarding outcome of AQP1 and AQP5 in resected AC patients...
July 4, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29100319/berberine-and-cinnamaldehyde-together-prevent-lung-carcinogenesis
#9
Mingjing Meng, Shengnan Geng, Zhenhua Du, Jingjing Yao, Yaqiu Zheng, Zibo Li, Zhenzhen Zhang, Jiahuan Li, Yongjian Duan, Gangjun Du
Starving tumor cells by restricting nutrient sources is a promising strategy for combating cancer. Because both berberine and cinnamaldehyde can activate AMP-activated protein kinase (AMPK, a sensor of cellular energy status), we investigated whether the combination of berberine and cinnamaldehyde could synergistically prevent lung carcinogenesis through tumor cell starvation. Urethane treatment induced lung carcinogenesis in mice, downregulated AMPK and mammalian target of rapamycin (mTOR) while upregulating aquaporin-1 (AQP-1) and nuclear factor kappa B (NF-κB)...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29100101/genome-wide-analysis-of-aquaporin-gene-family-and-their-responses-to-water-deficit-stress-conditions-in-cassava
#10
Pattaranit Putpeerawit, Punchapat Sojikul, Siripong Thitamadee, Jarunya Narangajavana
Cassava (Manihot esculenta Crantz) is an important economic crop in tropical countries. Although cassava is considered a drought-tolerant crop that can grow in arid areas, the impact of drought can significantly reduce the growth and yield of cassava storage roots. The discovery of aquaporin molecules (AQPs) in plants has resulted in a paradigm shift in the understanding of plant-water relationships, whereas the relationship between aquaporin and drought resistance in cassava still remains elusive. To investigate the potential role of aquaporin in cassava under water-deficit conditions, 45 putative MeAQPs were identified in the cassava genome...
October 27, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29099773/divalent-cations-regulate-the-ion-conductance-properties-of-diverse-classes-of-aquaporins
#11
Mohamad Kourghi, Saeed Nourmohammadi, Jinxin V Pei, Jiaen Qiu, Samantha McGaughey, Stephen D Tyerman, Caitlin S Byrt, Andrea J Yool
Aquaporins (AQPs) are known to facilitate water and solute fluxes across barrier membranes. An increasing number of AQPs are being found to serve as ion channels. Ion and water permeability of selected plant and animal AQPs (plant Arabidopsis thaliana AtPIP2;1, AtPIP2;2, AtPIP2;7, human Homo sapiens HsAQP1, rat Rattus norvegicus RnAQP4, RnAQP5, and fly Drosophilamelanogaster DmBIB) were expressed in Xenopus oocytes and examined in chelator-buffered salines to evaluate the effects of divalent cations (Ca(2+), Mg(2+), Ba(2+) and Cd(2+)) on ionic conductances...
November 3, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29093286/protection-of-tong-qiao-huo-xue-decoction-against-cerebral-ischemic-injury-through-reduction-blood-brain-barrier-permeability
#12
Lili Li, Ning Wang, Qizhong Jin, Qian Wu, Yafang Liu, Yan Wang
Tong-Qiao-Huo-Xue Decoction (TQHXD) is a classical prescription in traditional Chinese medicine treating blood stagnation in the head and facial channels, especially cerebral ischemia. We investigate the effect of TQHXD on the expressions of related proteins of the blood-brain barrier (BBB) and analysis of constituents in the cerebrospinal fluid (CSF) on cerebral ischemic model rats. Here, we demonstrate that TQHXD protected the hippocampus neurons, reduced the opening of tight junction (TJ) and decreased the permeability of BBB by up-regulating ZO-1, occludin, claudin-5 expressions, down-regulating aquaporin-4 (AQP-4) and matrix metalloproteinase-9 (MMP-9) expressions...
2017: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29091893/isoflurane-post-conditioning-down-regulates-expression-of-aquaporin-4-in-rats-with-cerebral-ischemia-reperfusion-injury-and-is-possibly-related-to-bone-morphogenetic-protein-4-smad1-5-8-signaling-pathway
#13
Min Yuan, Mingyue Ge, Jiangwen Yin, Zhigang Dai, Liping Xie, Yan Li, Xuejiao Liu, Li Peng, Guixing Zhang, Junqiang Si, Ketao Ma, Sheng Wang
AIM: Aquaporins (AQPs) are water-channels that play important roles in brain water homeostasis and cerebral edema induced by brain injury. This study aimed to investigate the relationship between AQP4, bone morphogenetic protein 4 (BMP4)/Smad1/5/8 signaling pathway and isoflurane post-conditiong, which has effects on brain edema in rats with cerebral ischemia/reperfusion (I/R) injury. METHODS: Cerebral I/R injury was induced in rats by using the middle cerebral artery occlusion (MCAO) model for 90min, followed by 24h of reperfusion...
October 27, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29080917/immunohistochemical-analysis-on-aquaporin-1-and-aquaporin-3-in-skin-wounds-from-the-aspects-of-wound-age-determination
#14
Yuko Ishida, Yumi Kuninaka, Fukumi Furukawa, Akihiko Kimura, Mizuho Nosaka, Mie Fukami, Hiroki Yamamoto, Takashi Kato, Emi Shimada, Satoshi Hata, Tatsunori Takayasu, Wolfgang Eisenmenger, Toshikazu Kondo
Immunohistochemical investigation of aquaporin (AQP)1 and AQP3 was performed in human skin wounds obtained from forensic autopsy cases. A total of 55 human skin wounds of different postinfliction intervals were collected as follows: group I, 0-3 days (n = 16); II, 4-7 days (n = 11); III, 9-14 days (n = 16); and IV, 17-21 days (n = 12). In uninjured skin samples, AQP1 and AQP3 could be slightly detected in dermal vessels and keratinocytes, respectively. The percentage of AQP1(+) vessels and the number of AQP3(+) keratinocytes were apparently elevated in accordance with wound ages...
October 28, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/29080426/overexpression-of-an-aquaglyceroporin-gene-from-trichoderma-harzianum-improves-water-use-efficiency-and-drought-tolerance-in-nicotiana-tabacum
#15
Pabline Marinho Vieira, Mirella Pupo Santos, Cristiana Moura Andrade, Otacílio Antônio Souza-Neto, Cirano José Ulhoa, Francisco José Lima Aragão
Aquaporins (AQPs) and aquaglyceroporins (AQGPs) are integral membrane proteins that mediate the transport of water and solutes, such as glycerol and urea, across membranes. AQP and AQGP genes represent a valuable tool for biotechnological improvement of plant tolerance to environmental stresses. We previously isolated a gene encoding for an aquaglyceroporin (ThAQGP), which was up-regulated in Trichoderma harzianum during interaction with the plant pathogen Fusarium solani. This gene was introduced into Nicotiana tabacum and plants were physiologically characterized...
October 20, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29072508/the-aquaporin-4-water-channel-as-a-potential-drug-target-in-neurological-disorders
#16
Alan S Verkman, Alex J Smith, Puay-Wah Phuan, Lukmanee Tradtrantip, Marc O Anderson
Aquaporin-4 (AQP4) is a water transporting protein expressed at the plasma membrane of astrocytes throughout the central nervous system (CNS). Analysis of AQP4 knockout mice has suggested its broad involvement in brain water balance, neuroexcitation, glial scarring, neuroinflammation, and even neurodegenerative and neuropsychiatric disorders. Broad clinical utility of AQP4 modulators has been speculated. Area covered: This review covers the biology of AQP4, evidence for its roles in normal CNS function and neurological disorders, and progress in AQP4 drug discovery...
December 2017: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/29070462/-role-of-aquaporin-5-in-regulating-colorectal-cancer-cell-growth-in-vitro
#17
Shuo Chen, Tao Shan, Li Wang, Xi Chen, Xi-Juan Cui, Xian-Ni Gao
OBJECTIVE: To study the role of aquaporin 5(AQP5) in regulating the cell proliferation and apoptosis of human colorectal cancer cells and explore the possible mechanism. METHODS: A small interfering RNA (siRNA) targeting AQP5 was used to suppress endogenous AQP5 expression in the human colorectal cancer cell lines COLO 205 and SW480, and the transfection efficiency of AQP5 siRNA was determined using immunofluorescence assay and PCR. The changes in the proliferation of the transfected cells was evaluated with MTT assay, and the cell apoptosis was analyzed using Annexin V-FITC/PI and TUNEL assays; the changes of Bax and Bcl2 expressions in the cells were determined using RTPCR and Western blotting...
October 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/29054452/mechanism-of-aquaporin-4-aqp-4-up-regulation-in-rat-cerebral-edema-under-hypobaric-hypoxia-and-the-preventative-effect-of-puerarin
#18
Chi Wang, Muyang Yan, Hui Jiang, Qi Wang, Shang He, Jingwen Chen, Chengbin Wang
AIM: We aim to investigate the mechanism of aquaporin 4 (AQP 4) up-regulation during high-altitude cerebral edema (HACE) in rats under hypobaric hypoxia and preventative effect of puerarin. METHODS: Rats were exposed to a hypobaric chamber with or without the preventative treatment of puerarin or dexamethasone. Morriz water maze was used to evaluate the spatial memory injury. HE staining and W/D ratio were used to evaluate edema injury. Rat astrocytes and microglia were co-cultured under the condition of hypoxia with the administration of p38 inhibitor, NF-κB inhibitor or puerarin...
October 17, 2017: Life Sciences
https://www.readbyqxmd.com/read/29053842/differential-expression-of-water-channel-and-noncoding-rna-biogenesis-related-genes-in-three-lines-of-chickens-under-a-short-term-water-restriction
#19
S Orlowski, J Flees, N Anthony, S Dridi
Genetic selection for high growth rate has resulted in tremendous changes not only in feed efficiency, but also in water consumption between modern broilers and their ancestor jungle fowl (JF). However molecular mechanisms involved in water homeostasis are still not well defined. This study aimed, therefore, to determine the effect of short-term water restriction on the expression of water channel- and noncoding RNA biogenesis-related genes in the kidney and whole blood of JF, broiler population from the 1990s (RB1995), and modern broiler population developed in 2015 (ARB2015)...
October 5, 2017: Poultry Science
https://www.readbyqxmd.com/read/29052330/aquaporins-in-the-male-reproductive-tract-and-sperm-functional-implications-and-cryobiology
#20
REVIEW
M Yeste, R Morató, J E Rodríguez-Gil, S Bonet, N Prieto-Martínez
Aquaporins (AQPs) play a vital role for the transport of water and solutes across cell membranes. Classification of these ubiquitous proteins into three categories (orthodox AQPs, aquaglyceroporins and superaquaporins) is based on their sequence similarity and substrate selectivity. In the male reproductive tract of mammals, most AQPs (except AQP6 and AQP12) are found in different organs (including testis, efferent ducts and epididymis). AQP1 and AQP9 are the most abundant AQPs in the efferent ducts and epididymis and play a crucial role for the secretion/reabsorption dynamics of luminal fluid during sperm transport and maturation...
October 2017: Reproduction in Domestic Animals, Zuchthygiene
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