keyword
MENU ▼
Read by QxMD icon Read
search

Aquaporin 9

keyword
https://www.readbyqxmd.com/read/28523565/blood-brain-barrier-permeability-is-exacerbated-in-experimental-model-of-hepatic-encephalopathy-via-mmp-9-activation-and-downregulation-of-tight-junction-proteins
#1
Saurabh Dhanda, Rajat Sandhir
The present study was designed to investigate the mechanisms involved in blood-brain barrier (BBB) permeability in bile duct ligation (BDL) model of chronic hepatic encephalopathy (HE). Four weeks after BDL surgery, a significant increase was observed in serum bilirubin levels. Masson trichrome staining revealed severe hepatic fibrosis in the BDL rats. (99m)Tc-mebrofenin retention was increased in the liver of BDL rats suggesting impaired hepatobiliary transport. An increase in permeability to sodium fluorescein, Evans blue, and fluorescein isothiocyanate (FITC)-dextran along with increase in water and electrolyte content was observed in brain regions of BDL rats suggesting disrupted BBB...
May 18, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28512855/insulin-like-growth-factor-i-enhances-the-developmental-competence-of-yak-embryos-by-modulating-aquaporin-3
#2
P Chen, Y Pan, Y Cui, Z Wen, P Liu, H He, Q Li, X Peng, T Zhao, S Yu
The objective of our present study was to determine the effects of insulin-like growth factor I (IGF-I) on the development of yak (Bos grunniens) embryos after cumulus-oocyte complex (COC) vitrification and warming followed by in vitro fertilization (IVF). In Experiment 1, the yak COCs underwent vitrification and then IVF. Embryos were incubated in synthetic oviductal fluid (SOF) supplemented with four concentrations (0, 50, 100 and 200 ng/ml) of IGF-I, while the yak COCs without vitrification or IGF-I supplementation acted as the control group; the BAX, BCL-2, AQP3mRNA and aquaporin 3 (AQP3) protein expression levels in the five groups of blastocysts were evaluated using quantitative real-time PCR and immunofluorescence analyses...
May 16, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28507882/aquaporin-1-expression-in-herniated-human-lumbar-intervertebral-discs
#3
Haydn Hoffman, Aaron W Choi, Victor Chang, Jon Kimball, Alan S Verkman, Rubeen Virani, Brian Kim, Tianyi Niu, Daniel C Lu
STUDY DESIGN: Case series. OBJECTIVE: Intervertebral disc (IVD) degeneration is the cause of spondylosis. The pathogenesis is poorly understood, but disc dehydration often plays a role. In this study, we aim to identify and quantify aquaporin-1 (AQP1) in ex vivo human degenerated IVDs obtained intraoperatively and to investigate the relationship between AQP1 levels and magnetic resonance imaging (MRI) T2 intensity of the disc. METHODS: Ex vivo samples of nucleus pulposus (NP) tissue from lumbar IVDs were obtained from 18 consecutive patients who underwent surgery for disc herniation at L4/5 and L5/S1 level...
April 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28503134/aquaporin-4-mediated-glutamate-induced-astrocyte-swelling-is-partially-mediated-through-metabotropic-glutamate-receptor-5-activation
#4
Zhongfang Shi, Wei Zhang, Yang Lu, Yi Lu, Lixin Xu, Qing Fang, Min Wu, Mei Jia, Yujiao Wang, Liping Dong, Xu Yan, Shaohua Yang, Fang Yuan
Astrocytes are one of the most abundant cell types in the mammalian central nervous system (CNS), and astrocyte swelling is the primary event associated with brain edema. Glutamate, the principal excitatory amino acid neurotransmitter in the CNS, is released at high levels after brain injury including cerebral ischemia. This leads to astrocyte swelling, which we previously demonstrated is related to metabotropic glutamate receptor (mGluR) activation. Aquaporin 4 (AQP4), the predominant water channel in the brain, is expressed in astrocyte endfeet and plays an important role in brain edema following ischemia...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28491067/genome-wide-association-study-reveals-the-genetic-architecture-underlying-salt-tolerance-related-traits-in-rapeseed-brassica-napus-l
#5
Heping Wan, Lunlin Chen, Jianbin Guo, Qun Li, Jing Wen, Bin Yi, Chaozhi Ma, Jinxing Tu, Tingdong Fu, Jinxiong Shen
Soil salinity is a serious threat to agriculture sustainability worldwide. Salt tolerance at the seedling stage is crucial for plant establishment and high yield in saline soils; however, little information is available on rapeseed (Brassica napus L.) salt tolerance. We evaluated salt tolerance in different rapeseed accessions and conducted a genome-wide association study (GWAS) to identify salt tolerance-related quantitative trait loci (QTL). A natural population comprising 368 B. napus cultivars and inbred lines was genotyped with a Brassica 60K Illumina Infinium SNP array...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28478824/the-role-of-aquaporins-in-polycystic-ovary-syndrome-a-way-towards-a-novel-drug-target-in-pcos
#6
Agata Wawrzkiewicz-Jałowiecka, Karolina Kowalczyk, Dagmara Pluta, Łukasz Blukacz, Paweł Madej
Aquaporins (AQPs) are transmembrane proteins, able to transport water (and in some cases also small solutes, e. g. glycerol) through the cell membrane. There are twelve types of aquaporins (AQP1-AQP12) expressed in mammalian reproductive systems. According to literature, many diseases of the reproductive organs are correlated with changes of AQPs expression and their malfunction. That is the case in the polycystic ovary syndrome (PCOS), where dysfunctions of AQPs 7-9 and alterations in its levels occur. In this work, we postulate how AQPs are involved in PCOS-related disorders, in order to emphasize their potential therapeutic meaning as a drug target...
May 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28445879/cytokine-and-chemokine-profiles-in-patients-with-neuromyelitis-optica-spectrum-disorder
#7
Yuge Wang, Yifan Zhou, Xiaobo Sun, Tingting Lu, Lei Wei, Ling Fang, Chen Chen, Qiao Huang, Xueqiang Hu, Zhengqi Lu, Lisheng Peng, Wei Qiu
OBJECTIVE: To screen cytokines and chemokines and determine their dynamic changes in the serum and cerebrospinal fluid (CSF) of patients with neuromyelitis optica spectrum disorder (NMOSD). METHODS: Eight NMOSD with seropositive aquaporin-4 antibody (AQP4-IgG) were enrolled, as well as 8 matched patients with multiple sclerosis (MS) and 8 with noninflammatory neurological diseases, who were included as controls. In total, 102 cytokines and 34 chemokines were detected in the CSF and serum of NMOSD patients and controls...
2016: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28419510/increase-of-aquaporin-9-expression-in-astrocytes-participates-in-astrogliosis
#8
Lorenz Hirt, Melanie Price, Nabil Mastour, Jean-François Brunet, Grégory Barrière, Frédéric Friscourt, Jerome Badaut
Here we assess the potential functional role of increased aquaporin 9 (APQ9) in astrocytes. Increased AQP9 expression was achieved in primary astrocyte cultures by transfection of a plasmid-containing green fluorescent protein fused to either wild-type or mutated human AQP9. Increased AQP9 expression and phosphorylation at Ser222 were associated with a significant change in astrocyte morphology, mainly with a higher number of processes. Similar phenotypic changes are observed in astrogliosis processes after injury...
April 17, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28408868/perivascular-accumulation-of-%C3%AE-sheet-rich-proteins-in-offspring-brain-following-maternal-exposure-to-carbon-black-nanoparticles
#9
Atsuto Onoda, Takayasu Kawasaki, Koichi Tsukiyama, Ken Takeda, Masakazu Umezawa
Environmental stimulation during brain development is an important risk factor for the development of neurodegenerative disease. Clinical evidence indicates that prenatal exposure to particulate air pollutants leads to diffuse damage to the neurovascular unit in the developing brain and accelerates neurodegeneration. Maternal exposure to carbon black nanoparticles (CB-NPs), used as a model for particulate air pollution, induces long-lasting diffuse perivascular abnormalities. We aimed to comprehensively characterize the perivascular abnormalities related to maternal NPs exposure using Fourier transform infrared microspectroscopy (in situ FT-IR) and classical staining analysis...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28404667/distinct-clinical-characteristics-of-atypical-optic-neuritis-with-seronegative-aquaporin-4-antibody-among-chinese-patients
#10
Huanfen Zhou, Quangang Xu, Shuo Zhao, Wei Wang, Junqing Wang, Zhiye Chen, Dahe Lin, Xiaoming Li, Chunxia Peng, Nanping Ai, Shihui Wei
OBJECTIVE: To evaluate the clinical features and prognosis of atypical optic neuritis (ON) with seronegative aquaporin-4 (AQP4) antibody in Chinese patients. METHODS: All patients with first or relapsing ON were recruited from the Neuro-ophthalmology Department of the Chinese People's Liberation Army General Hospital from January 2013 to December 2014 and assigned to one of three groups based on diagnosis: atypical ON, typical ON and neuromyelitis optica spectrum disorder (NMOSD)-ON...
April 12, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28384265/growth-deficits-in-cystic-fibrosis-mice-begin-in-utero-prior-to-igf-1-reduction
#11
Rebecca Darrah, Ilya Bederman, Megan Vitko, Dana M Valerio, Mitchell L Drumm, Craig A Hodges
Growth deficits are common in cystic fibrosis (CF), but their cause is complex, with contributions from exocrine pancreatic insufficiency, pulmonary complications, gastrointestinal obstructions, and endocrine abnormalities. The CF mouse model displays similar growth impairment despite exocrine pancreatic function and in the absence of chronic pulmonary infection. The high incidence of intestinal obstruction in the CF mouse has been suggested to significantly contribute to the observed growth deficits. Previous studies by our group have shown that restoration of the cystic fibrosis transmembrane conductance regulator (CFTR) in the intestinal epithelium prevents intestinal obstruction but does not improve growth...
2017: PloS One
https://www.readbyqxmd.com/read/28382320/female-hormonal-exposures-and-neuromyelitis-optica-symptom-onset-in-a-multicenter-study
#12
Riley Bove, Liene Elsone, Enrique Alvarez, Nadja Borisow, Melissa M Cortez, Farrah J Mateen, Maureen A Mealy, Kerry Mutch, Sean Tobyne, Klemens Ruprecht, Guy Buckle, Michael Levy, Dean M Wingerchuk, Friedemann Paul, Anne H Cross, Brian Weinshenker, Anu Jacob, Eric C Klawiter, Tanuja Chitnis
OBJECTIVE: To study the association between hormonal exposures and disease onset in a cohort of women with neuromyelitis optica spectrum disorder (NMOSD). METHODS: Reproductive history and hormone use were assessed using a standardized reproductive survey administered to women with NMOSD (82% aquaporin-4 antibody positive) at 8 clinical centers. Using multivariable regression, we examined the association between reproductive exposures and age at first symptom onset (FS)...
May 2017: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/28370569/aquaporin-9-is-expressed-in-the-epididymis-of-immature-and-mature-pigs
#13
B C Schimming, Cae Baumam, Pff Pinheiro, R de Matteis, R F Domeniconi
Aquaporins (AQPs) are channel proteins that facilitate the transepithelial and bidirectional movement of water. AQP9 is an aquaporin that is expressed in the mammalian epididymis. This water transport contributes to epididymal sperm concentration. This study aimed to examine the morphology of epididymal epithelium in piglets and boars, as well as the expression and immunolocalization of AQP9. The piglets presented an epididymal epithelium in differentiation with principal, basal and apical cells. The cellular population of the epididymal epithelium in boars consisted of principal, basal, apical, clear and narrow cells...
March 30, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28330559/dge-seq-analysis-of-mur3-related-arabidopsis-mutants-provides-insight-into-how-dysfunctional-xyloglucan-affects-cell-elongation
#14
Zongchang Xu, Meng Wang, Dachuan Shi, Gongke Zhou, Tiantian Niu, Michael G Hahn, Malcolm A O'Neill, Yingzhen Kong
Our previous study of the Arabidopsis mur3-3 mutant and mutant plants in which the mur3-3 phenotypes are suppressed (xxt2mur3-3, xxt5mur3-3, xxt1xxt2mur3-3 and 35Spro:XLT2:mur3-3) showed that hypocotyl cell elongation is decreased in plants that synthesize galactose-deficient xyloglucan. To obtain genome-wide insight into the transcriptome changes and regulatory networks that may be involved in this decreased elongation, we performed digital gene expression analyses of the etiolated hypocotyls of wild type (WT), mur3-3 and the four suppressor lines...
May 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28302609/enhancing-brain-lesions-during-acute-optic-neuritis-and-or-longitudinally-extensive-transverse-myelitis-may-portend-a-higher-relapse-rate-in-neuromyelitis-optica-spectrum-disorders
#15
G Orman, K Y Wang, Y Pekcevik, C B Thompson, M Mealy, M Levy, I Izbudak
BACKGROUND AND PURPOSE: Neuromyelitis optica spectrum disorders are inflammatory demyelinating disorders with optic neuritis and/or longitudinally extensive transverse myelitis episodes. We now know that neuromyelitis optica spectrum disorders are associated with antibodies to aquaporin-4, which are highly concentrated on astrocytic end-feet at the blood-brain barrier. Immune-mediated disruption of the blood-brain barrier may manifest as contrast enhancement on brain MR imaging. We aimed to delineate the extent and frequency of contrast enhancement on brain MR imaging within 1 month of optic neuritis and/or longitudinally extensive transverse myelitis attacks and to correlate contrast enhancement with outcome measures...
May 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28298841/etiological-profile-of-noncompressive-myelopathies-in-a-tertiary-care-hospital-of-northeast-india
#16
Ashok Kumar Kayal, Munindra Goswami, Marami Das, Lakhshya Jyoti Basumatary, Suvorit Subhas Bhowmick, Baiakmenlang Synmon
BACKGROUND: The discovery of antibodies against aquaporin-4 and evolving concepts of noncompressive myelopathies in the 21(st) century have made a major impact on the etiological profile of these diseases, with few cases turning out to be idiopathic. OBJECTIVE: To find causes of noncompressive myelopathy in a tertiary care hospital of Northeast India. MATERIALS AND METHODS: An observational study was carried out in the Neurology Department of Gauhati Medical College, Guwahati, from September 2013 to February 2016...
January 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28281033/a-treatable-cause-of-myelopathy-and-vision-loss-mimicking-neuromyelitis-optica-spectrum-disorder-late-onset-biotinidase-deficiency
#17
Sanem Yilmaz, Mine Serin, Ebru Canda, Cenk Eraslan, Hande Tekin, Sema Kalkan Ucar, Sarenur Gokben, Hasan Tekgul, Gul Serdaroglu
Biotinidase deficiency is characterized by severe neurological manifestations as hypotonia, lethargy, ataxia, hearing loss, seizures and developmental retardation in its classical form. Late-onset biotinidase deficiency presents distinctly from the classical form such as limb weakness and vision problems. A 14-year-old boy presented with progressive vision loss and upper limb weakness. The patient was initiated steroid therapy with a preliminary diagnosis of neuromyelitis optica spectrum disorder due to the craniospinal imaging findings demonstrating optic nerve, brainstem and longitudinally extensive spinal cord involvement...
June 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28258567/aquaporins-in-nervous-system
#18
Mengmeng Xu, Ming Xiao, Shao Li, Baoxue Yang
Aquaporins (AQPs ) mediate water flux between the four distinct water compartments in the central nervous system (CNS). In the present chapter, we mainly focus on the expression and function of the 9 AQPs expressed in the CNS, which include five members of aquaporin subfamily: AQP1, AQP4, AQP5, AQP6, and AQP8; three members of aquaglyceroporin subfamily: AQP3, AQP7, and AQP9; and one member of superaquaporin subfamily: AQP11. In addition, AQP1, AQP2 and AQP4 expressed in the peripheral nervous system (PNS) are also reviewed...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28258564/the-evolutionary-aspects-of-aquaporin-family
#19
Kenichi Ishibashi, Yoshiyuki Morishita, Yasuko Tanaka
Aquaporins (AQPs ) are a family of transmembrane proteins present in almost all species including virus. They are grossly divided into three subfamilies based on the sequence around a highly conserved pore-forming NPA motif: (1) classical water -selective AQP (CAQP), (2) glycerol -permeable aquaglyceroporin (AQGP) and (3) AQP super-gene channel, superaquaporin (SAQP). AQP is composed of two tandem repeats of conserved three transmembrane domains and a NPA motif. AQP ancestors probably started in prokaryotes by the duplication of half AQP genes to be diversified into CAQPs or AQGPs by evolving a subfamily-specific carboxyl-terminal NPA motif...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28245299/vitreous-humor-changes-expression-of-iron-handling-proteins-in-lens-epithelial-cells
#20
Malgorzata Goralska, Lloyd N Fleisher, M Christine McGahan
Purpose: In humans, vitrectomy is associated with development of nuclear cataracts. Iron catalyzes free radical formation causing oxidative damage, which is implicated in cataract formation. This study was designed to determine if vitreous humor, which can initiate differentiation of lens epithelial cells, would have an effect on iron-handling proteins. Methods: Cultured canine lens epithelial cells were treated with collected canine vitreous humor. Lysates of treated and control cells were separated by SDS-PAGE...
February 1, 2017: Investigative Ophthalmology & Visual Science
keyword
keyword
48749
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"