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Lovisa Tobieson, Bijar Ghafouri, Peter Zsigmond, Sandro Rossitti, Jan Hillman, Niklas Marklund
The secondary injury cascades exacerbating the initial brain injury following intracerebral haemorrhage (ICH) are incompletely understood. We used dual microdialysis (MD) catheters placed in the perihaemorrhagic zone (PHZ) and in seemingly normal cortex (SNX) at time of surgical ICH evacuation in ten patients (range 26-70 years). Routine interstitial MD markers (including glucose and the lactate/pyruvate ratio) were analysed and remaining microdialysate was analysed by two-dimensional gel electrophoresis (2-DE) and nano-liquid chromatography tandem mass spectrometry (nLC-MS/MS)...
February 28, 2019: Scientific Reports
Ying-Ning Ho, Hsin-Chi Tsai, Bing-Mu Hsu, Chien-Shun Chiou
Salmonella is one of the most common pathogens of waterborne and foodborne disease-causing pathogens. In this study, we collected 172 surface water samples from Puzih River and Kaoping River between the years 2010 and 2011. Salmonella was detected in 31.7% (32/101) and 42.2% (30/71) of the samples from the two rivers, respectively. From these positive samples, 44 Salmonella isolates were obtained from these positive samples and were characterized using serotyping and pulsed-field gel electrophoresis (PFGE) genotyping...
May 15, 2018: Science of the Total Environment
Nageswara Rao Dunna, Srinivas Bandaru, Uday Raj Akare, Siddheshwar Rajadhyax, Venkata Ravi Gutlapalli, Mukesh Yadav, Anuraj Nayarisseri
Since the discovery of Hsp90, a decade ago, it has surfaced as a potential target in breast cancer therapy along with other cancers. In present study, we have selected seven established Hsp inhibitors viz., PU3, CCT-018159, CNF-2024, SNX-5422, NVP (AUY-922), EGCG and IPI-504 used in the treatment of cancer. Considering these seven inhibitors as a parent compound, ligand based search was carried out with 90% similarity in Pubchem database (31 million compounds). All the similar molecules belonging to respective parent compound along with similar compound were subjected to virtual screening using MolDock and PLP algorithm aided molecular docking...
2015: Current Topics in Medicinal Chemistry
Hui-Yuan Tseng, Niko Thorausch, Tilman Ziegler, Alexander Meves, Reinhard Fässler, Ralph T Böttcher
Trafficking of α5β1 integrin to lysosomes and its subsequent degradation is influenced by ligand occupancy and the binding of SNX17 via its protein 4.1, ezrin, radixin, moesin (FERM) domain to the membrane-distal NPxY motif in the cytoplasmic domain of β1 integrin in early endosomes. Two other sorting nexin (SNX) family members, namely SNX27 and SNX31, share with SNX17 next to their obligate phox domain a FERM domain, which may enable them to bind β integrin tails. Here we report that, in addition to SNX17, SNX31 but not SNX27 binds several β integrin tails in early endosomes in a PI3 (phosphatidylinositide 3)-kinase-dependent manner...
September 9, 2014: Journal of Molecular Biology
Aihua Qian, Dandan Song, Yong Li, Xinqiu Liu, Dong Tang, Weiyan Yao, Yaozong Yuan
BACKGROUND: Visceral pain is common symptom involved in many gastrointestinal disorders such as inflammatory bowel disease. The underlying molecular mechanisms remain elusive. We investigated the molecular mechanisms and the role for voltage gated calcium channel (VGCC) in the pathogenesis in a rat model of 2,4,6-trinitrobenzenesulfonic acid (TNBS) induced visceral inflammatory hypersensitivity. RESULTS: Using Agilent cDNA arrays, we found 172 genes changed significantly in dorsal root ganglia (DRG) of TNBS treated rats...
2013: Molecular Pain
Richard L Rauck, Mark S Wallace, Allen W Burton, Leonardo Kapural, James M North
Neuropathic pain is a considerable burden that affects activities of daily living. The management of neuropathic pain can be challenging because of multiple etiologies and complex manifestations. Ziconotide is a nonopioid intrathecal (IT) analgesic option for patients with neuropathic pain refractory to conventional treatments. The objective of this article is to review the published literature on ziconotide for the treatment of neuropathic pain. Relevant publications were identified through searches of all years of 6 databases, which included PubMed, EMBASE, and CINAHL...
September 2009: Pain Practice: the Official Journal of World Institute of Pain
Yanina D Alvarez, Lorena I Ibañez, Osvaldo D Uchitel, Fernando D Marengo
Chromaffin cell exocytosis is triggered by Ca(2+) entry through several voltage-dependent channel subtypes. Because it was postulated that immediately releasable vesicles are closely associated with Ca(2+) channels, we wondered what channel types are specifically coupled to the release of this pool. To study this question, cultured mouse chromaffin cell exocytosis was followed by patch-clamp membrane capacitance measurements. The immediately releasable pool was estimated using paired pulse stimulation, resulting in an upper limit of 31+/-3 fF for control conditions (I(Ca): 25+/-2 pA/pF)...
February 2008: Cell Calcium
Peter Hamar, Gabor Kokeny, Peter Liptak, Jan Krtil, Marcin Adamczak, Kerstin Amann, Eberhard Ritz, Marie-Luise Gross
BACKGROUND: The blood pressure-independent renoprotective actions of the blockade of the renin-angiotensin and the sympathetic nervous system are well documented, but monotherapies fail to completely abrogate progression. We investigated whether combined inhibition of the two systems provides additive renoprotection. METHODS: After subtotal nephrectomy (SNX) or sham operation, rats underwent resection of dorsal roots, i.e. rhizotomy or sham rhizotomy. Subsequently, they received tap water or quinapril in drinking water for 16 weeks (n = 18/group)...
2007: Nephron. Experimental Nephrology
Peter S Staats, Thomas Yearwood, Steven G Charapata, Robert W Presley, Mark S Wallace, Michael Byas-Smith, Robert Fisher, David A Bryce, Eugene A Mangieri, Robert R Luther, Martha Mayo, Dawn McGuire, David Ellis
CONTEXT: Ziconotide (formerly SNX-111) selectively blocks N-type voltage-sensitive calcium channels and may be effective in patients with pain that is refractory to opioid therapy or those with intolerable opioid-related adverse effects. OBJECTIVE: To assess the safety and efficacy of intrathecal ziconotide in patients with pain that is refractory to conventional treatment. DESIGN, SETTING, AND PATIENTS: Double-blind, placebo-controlled, randomized trial conducted from March 12, 1996, to July 11, 1998, at 32 study centers in the United States, Australia, and the Netherlands...
January 7, 2004: JAMA: the Journal of the American Medical Association
Marcin Adamczak, Marie-Luise Gross, Jan Krtil, Andreas Koch, Karin Tyralla, Kerstin Amann, Eberhard Ritz
Interventions to block the renin-angiotensin system (RAS) halt the progression of renal lesions in renal damage models. It has recently also been reported that established glomerulosclerosis can be reversed by pharmacologic blockade of the RAS. It was the aim of this study to confirm that high doses of angiotensin-converting enzyme (ACE) inhibitors reverse established glomerulosclerosis and to extend the findings by providing quantitative information on glomerular geometry, podocytes and other glomerular cells, renal vessels and tubulointerstitial tissue...
November 2003: Journal of the American Society of Nephrology: JASN
Wei-xin Kong, Ji Ma, Yong Gu, Hai-chun Yang, Yi-qin Zuo, Shan-yan Lin
OBJECTIVE: To investigate the renoprotective effect of specific cyclooxygenase-2 (COX-2) inhibitor rofecoxib and its possible mechanism of retarding progressive renal injury in rats with subtotal renal ablation. METHODS: Rats were randomly divided into six groups: sham, subtotal renal ablation (SNX). SNX treated with rofecoxib (10 SNX treated with indomethacin (2 SNX treated with losartan (100 SNX treated with rofecoxib and losartan...
March 2003: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
K Amann, A Simonaviciene, T Medwedewa, A Koch, S Orth, M L Gross, C Haas, A Kuhlmann, W Linz, B Schölkens, E Ritz
Pharmacologic blockade of the renin and endothelin (ET) systems is an established strategy to interfere with progression of renal failure. In the Heyman nephritis model, additive benefits of decreases in BP with the combination of angiotensin-converting enzyme inhibitors (ACE-i) and ET(A) receptor antagonists (ET-RA) were demonstrated. To further investigate these findings and to exclude confounding effects of BP decreases, this issue was reassessed in a low-renin model of subtotal kidney resection. Subtotally nephrectomized (SNX) and sham-operated rats were left untreated or received an ACE-i, an angiotensin II subtype 1 receptor antagonist (AT1-RA), an ET-RA, or combinations thereof (ACE-i plus ET-RA or AT1-RA plus ET-RA)...
December 2001: Journal of the American Society of Nephrology: JASN
John H. Nelson, William L. Wilson, Lewis W. Cary, Nathaniel W. Alcock, Howard J. Clase, Gouri S. Jas, Lori Ramsey-Tassin, John W. Kenney
The complexes M(3)[Pt(SnX(3))(5)] (M = Bu(4)N(+), PhCH(2)PPh(3)(+); X = Cl, Br), cis-M(2)[PtX(2)(SnX(3))(2)] (M = Bu(4)N(+), PhCH(2)PPh(3)(+), CH(3)PPh(3)(+), Pr(4)N(+); X = Cl, Br), and [PhCH(2)PPh(3)](2)[PtBr(3)(SnBr(3))] have been prepared and characterized by (119)Sn and (195)Pt NMR, far-infrared, and electronic absorption and emission spectroscopies. In acetone solutions the [Pt(SnX(3))(5)](3)(-) ions retain their trigonal bipyramidal structures but are stereochemically nonrigid as evidenced by (119)Sn and (195)Pt NMR spectroscopy...
February 14, 1996: Inorganic Chemistry
T R Neelands, A P King, R L Macdonald
The biophysical and pharmacological properties of voltage-gated calcium channel currents in the human teratocarcinoma cell line NT2-N were studied using the whole cell patch-clamp technique. When held at -80 mV, barium currents (I(Ba)s) were evoked by voltage commands to above -35 mV that peaked at +5 mV. When holding potentials were reduced to -20 mV or 5 mM barium was substituted for 5 mM calcium, there was a reduction in peak currents and a right shift in the current-voltage curve. A steady-state inactivation curve for I(Ba) was fit with a Boltzmann curve (V(1/2) = -43...
December 2000: Journal of Neurophysiology
A Samii, H Badie, K Fu, R R Luther, D A Hovda
Accumulation of calcium following experimental traumatic brain injury (TBI) has been demonstrated to be a prominent pathophysiological component that can compromise mitochondrial functioning and threaten cell survival. The omega-conopeptide SNX-111, also known as Ziconotide, is a potent antagonist of the voltage-gated N-type calcium channel and has demonstrated significant neuroprotective effects against ischemia-induced neuronal injury. To determine whether this compound would be effective in reducing calcium accumulation associated with TBI, SNX-111 was administered intravenously to rats 1 hour following a moderate (2...
October 1999: Journal of Neurotrauma
M K Hise, J S Lahn, Z M Shao, N M Mantzouris, J A Fontana
Insulin-like growth factor (IGF)-binding proteins and the IGF-I receptor in rat kidney were studied to gain perspective on their potential roles in the control of renal cell mass. Thirty days after nephrectomy (UNx), membranous whole-kidney binding of IGF-I averaged 9.5 +/- 1.0 pmol/kidney, whereas binding to sham-operated controls (SNx) averaged 6.3 +/- 0.8 pmol/kidney (N = 6; P < 0.01). Scatchard analysis of IGF-I binding per milligram of protein to glomerular membranes or proximal tubule basolateral membranes (BLM) at Day 30 did not reveal significance differences in Bmax or KD between SNx and UNx; however, protein per glomerulus increased from 361 +/- 33 ng/glomerulus in SNx animals to 826 +/- 123 ng/glomerulus in UNx rats (N = 6; P < 0...
July 1993: Journal of the American Society of Nephrology: JASN
G Szénási, G Kottra, P Bencsáth, L Takács
The effect of acute renal denervation (RD) on water (V), sodium (UNaV), and potassium excretion (UKV) from the hypertrophied and control kidney was studied in 5-sec-butyl-5-ethyl-2-thiobarbituric acid (Inactin)-anesthetized male rats 7 days after unilateral nephrectomy (Nx) or sham operation (SNx). V, UNaV, and UKV from the hypertrophied kidney were similar before and after RD or sham RD. In contrast, in SNx rats, left RD resulted in an ipsilateral increase in V (from 2.76 +/- 0.39 to 5.31 +/- 0.99 microliters...
January 1988: American Journal of Physiology
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