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[PMID]: 29524771
[Au] Autor:Devrukhakar PS; M SS; G S; R S
[Ad] Address:School of Advance Sciences, Vellore Institute of technology (VIT), Katpadi, Vellore, Tamil Nadu 632014, India.
[Ti] Title:Proposal of degradation pathway with toxicity prediction for hydrolytic and photolytic degradation products of timolol.
[So] Source:J Pharm Biomed Anal;154:7-15, 2018 Feb 28.
[Is] ISSN:1873-264X
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Timolol (TIM) is a potent ß-adrenergic blocker, useful in treatment of ocular hypertension or open-angle glaucoma. Development and validation of stability indicating LCMS assay method for TIM was accomplished coherent with ICH guideline. Successful chromatographic separation of TIM with its four degradation products was attained by using gradient elution mode on reverse phase column using ammonium acetate buffer, pH 4.6 as mobile phase A and organic solvent as the mobile phase B. Chromatographic conditions were set such as 1.0 mL min flow rate, 20 µL injection volume, 30 °C column temperature and 320 nm detection wavelength. Four major degradation products obtained from hydrolysis and photolysis, were identified and characterized with the combination of liquid chromatography-electrospray ionization mass spectrometry (LC-ESI/MS/MS) and accurate mass measurements. Degradation pathways were identified based on a comparison of the fragmentation pattern of the [M+H] ions of TIM and its degradation products. The method validation was performed as per ICH guideline Q2 (R1).
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

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[PMID]: 29524682
[Au] Autor:Ghosh K; N I
[Ad] Address:Unit of Toxicology, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore, 641046, Tamil Nadu, India; Department of Zoology, Annamalai University, Annamalainagar, Chidambaram, 608002, Tamil Nadu, India. Electronic address: kavisa9@gmail.com.
[Ti] Title:Cadmium treatment induces echinocytosis, DNA damage, inflammation, and apoptosis in cardiac tissue of albino Wistar rats.
[So] Source:Environ Toxicol Pharmacol;59:43-52, 2018 Feb 27.
[Is] ISSN:1872-7077
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:Cadmium (Cd), a potent carcinogen present in almost all foods, poses a major health risk to humans. Major routes of exposure to Cd for humans are occupation, diet, and tobacco use. Cd elicits various deleterious effects on cellular molecules mainly by causing oxidant-antioxidant imbalance. Cd has been implicated in the pathogenesis of many cancers, Itai-itai disease, diabetic nephropathy, hypertension, peripheral artery disease, and myocardial infarction. This study was designed to investigate the effects of Cd intake on erythrocytes and cardiac tissue in male albino Wistar rats. We treated male albino Wistar rats with cadmium chloride (CdCl ) by intra-gastric administration for 30 days and examined Cd burden and changes in blood constituents and antioxidant status of blood and cardiac tissue. We also studied the structural alterations in the erthrocytes, elemental changes and Cd burden in cardiac tissue using scanning electron microscope (SEM/EDX). Inflammation and apoptosis were analysed in the cardiac tissue by polymerase chain reaction (PCR), western blotting, and DNA fragmentation assay. Cd treatment resulted in echinocytosis of erythrocytes and distorted myofibrils arrangement, vacuolization and congestion in the vessels. Cd administration has also induced inflammation and apoptosis in the cardiac tissue. At molecular level, Cd administration caused oxidative damage to DNA, lipids, and proteins and diminished the activities of various antioxidants. The present study provides a compelling evidence of Cd-induced imbalance in oxidant-antioxidant system with damage to erythrocytes and cardiac tissue that may contribute to various cardiac diseases.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

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[PMID]: 29524673
[Au] Autor:Raghunathan V; Benoit J; Kasetti R; Zode G; Salemi M; Phinney BS; Keller KE; Staverosky JA; Murphy CJ; Acott T; Vranka J
[Ad] Address:Department of Basic Sciences, University of Houston, Houston, TX, 77204, USA; The Ocular Surface Institute, University of Houston, Houston, TX, 77204, USA. Electronic address: vraghunathan@uh.edu.
[Ti] Title:Glaucomatous cell derived matrices differentially modulate non-glaucomatous trabecular meshwork cellular behavior.
[So] Source:Acta Biomater;, 2018 Mar 07.
[Is] ISSN:1878-7568
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Ocular hypertension is a causal risk-factor to developing glaucoma. This is associated with stiffening of the trabecular meshwork (TM), the primary site of resistance to aqueous-humor-outflow. The mechanisms underlying this stiffening or how pathologic extracellular matrix (ECM) affects cell function are poorly understood. It is recognized that mechanotransduction systems allow cells to sense and translate the intrinsic biophysical properties of ECM into intracellular signals to control gene transcription, protein expression, and cell behavior. Using an anterior segment perfusion model, we document that there are significantly more low flow regions that are much stiffer, and fewer high flow regions that are less stiff in glaucomatous TM (GTM) when compared to non-glaucomatous TMs (NTM). GTM tissue also has fewer cells overall when compared with NTM tissue. In order to study the role of pathologic ECM in glaucoma disease progression, we conducted studies using cell derived matrices (CDM). First, we characterized the mechanics, composition and organization of fibronectin in ECM deposited by GTM and NTM cells treated with glucocorticosteroids. Then, we determined that these GTM-derived ECM are able to induce stiffening of normal NTM cells, and alter their gene/protein expression to resemble that of a glaucomatous phenotype. Further, we demonstrate that GTM-derived ECM causes endoplasmic reticular stress in NTM. They also became resistant to being reorganized by these NTM cells. These phenomena were exacerbated by ECMs obtained from steroid treated glaucoma model groups. Collectively, our data demonstrates that CDMs represent a novel tool for the study of bidirectional interactions between TM cells and their immediate microenvironment. STATEMENT OF SIGNIFICANCE: Extracellular matrix (ECM) changes are prevalent in a number of diseases. The precise mechanisms by which changes in the ECM contribute to disease progression is unclear, primarily due to absence of appropriate models. Here, using glaucoma as a disease model, we document changes in cell derived matrix (CDM) and tissue mechanics that contribute to the pathology. Subsequently, we determine the effect that ECMs from diseased and healthy individuals have on healthy cell behaviors. Data emanating from this study demonstrate that CDMs are a potent tool for the study of cell-ECM interactions.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

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[PMID]: 29524572
[Au] Autor:Zhang Z; Li Y; Yang X; Wang L; Xu L; Zhang Q
[Ad] Address:Heart Canter, Beijing Chao Yang Hospital, Capital Medical University, Beijing, China.
[Ti] Title:Susceptibility of multiple polymorphisms in ADIPOQ, ADIPOR1 and ADIPOR2 genes to myocardial infarction in Han Chinese.
[So] Source:Gene;, 2018 Mar 07.
[Is] ISSN:1879-0038
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:We aimed to investigate the association of 12 extensively studied polymorphisms in adiponectin (ADIPOQ), adiponectin receptor-1 (ADIPOR1) and adiponectin receptor-2 (ADIPOR2) genes with myocardial infarction in Han Chinese. This is a hospital-based, cross-sectional, case-control study, including 717 myocardial infarction patients and 612 controls. Myocardial infarction was confirmed through electrocardiogram/anatomopathological examinations. All polymorphisms met the Hardy-Weinberg equilibrium (p > 0.05). The genotype/allele counts of ADIPOQ gene rs2241766 (p = 0.001/0.003) and ADIPOR2 gene rs10773989 (p < 0.001/=0.008) differed significantly between patients and controls. Under the recessive model, rs2241766 (odds ratio [OR] = 4.16, 95% confidence interval [CI]: 1.83-9.49, p = 0.001) and rs10773989 (OR = 8.40, 95% CI: 2.54-27.8, p < 0.001) were associated with the significantly increased risk of myocardial infarction. Haplotype analysis revealed none or marginal significance, and there was no likelihood of genetic interaction as indicated by multifactor dimensionality reduction (MDR). Logistic regression analysis indicated that age, total cholesterol, hypertension, rs2241766, rs1342387, rs10773989 and rs1044471 were significant contributors, and a nomogram based on these contributors exhibited a good predictive utility (C-index: 0.795, p < 0.001). Our findings demonstrate that two polymorphisms, rs2241766 in ADIPOQ gene and rs10773989 in ADIPOR2 gene, especially under the recessive model of inheritance, played independent leading roles in susceptibility to myocardial infarction in Han Chinese.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

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[PMID]: 29524462
[Au] Autor:Tigkiropoulos K; Sigala F; Tsilimigras DI; Moris D; Filis K; Melas N; Karamanos D; Kontogiannis C; Lazaridis I; Saratzis N
[Ad] Address:1(st) Department of Surgery, Aristotle University Thessaloniki, Papageorgiou General Hospital, Thessaloniki, Greece.
[Ti] Title:Endovascular Repair of Blunt Thoracic Aortic Trauma: Is Post-Implant Hypertension an Incidental Finding?
[So] Source:Ann Vasc Surg;, 2018 Mar 07.
[Is] ISSN:1615-5947
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:BACKGROUND: Blunt thoracic aortic injury (BTAI) is the second most common cause of death in trauma patients. Nowadays, thoracic endovascular aortic repair (TEVAR) has become the treatment of choice due to lower rates of mortality, paraplegia and stroke. However, concerns have been raised whether graft implantation is related to the development of hypertension in the postoperative period. OBJECTIVES: To report short- and long-term outcomes of patients undergoing TEVAR for BTAIs at a tertiary hospital as well as investigate post-implant hypertension. MATERIALS & METHODS: Between January 2005 and January 2016, 23 patients with blunt thoracic aortic trauma underwent TEVAR. Median age was 44 years (range 18-73). Among them, 14 (60.9%) patients were diagnosed with aortic rupture, while 9 (39.1%) with pseudoaneurysm. Α single thoracic stent graft was deployed in 21 patients and the rest 2 patients received two stent grafts. RESULTS: Complete exclusion of the injury was feasible in all subjects (100% primary success). The left subclavian artery (SCA) was intentionally covered in 6 patients (26%). Intraoperative complications included one nonfatal stroke managed conservatively and one external iliac artery rupture, treated with iliofemoral bypass. One patient (4.3%) died on the first postoperative day in the intensive care unit (ICU) due to hemorrhagic shock. The overall 30-day mortality and morbidity were 4.3% and 8.7%, respectively. New-onset post-implantation arterial hypertension was observed in 8 (34.8%) previously non-hypertensive patients. Younger age (p=0.027) and SCA coverage (p=0.01) were identified as potential risk factors for the development of post-implant hypertension, whereas the presence of concomitant injuries (p=0.3) and intraoperative complications (p=0.1) were not. Following a median follow-up of 100 months (range, 18-120), six of them still remain on antihypertensive therapy, whereas the other 2 did not require permanent treatment. CONCLUSIONS: TEVAR is a safe approach in the treatment of BTAI associated with low short- and long-term morbidity and mortality rates. Lower age and SCA coverage may contribute to the development of post-implant hypertension. Further larger cohort studies are warranted in order to elucidate the underlying mechanisms of post-implant hypertension.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

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[PMID]: 29520385
[Au] Autor:Kim SB; Yoon SG; Tae J; Kim JY; Shim JS; Kang SG; Cheon J; Lee JG; Kim JJ; Kang SH
[Ad] Address:Department of Urology, Korea University College of Medicine, Seoul, Korea.
[Ti] Title:Detection and recurrence rate of transurethral resection of bladder tumors by narrow-band imaging: Prospective, randomized comparison with white light cystoscopy.
[So] Source:Investig Clin Urol;59(2):98-105, 2018 Mar.
[Is] ISSN:2466-054X
[Cp] Country of publication:Korea (South)
[La] Language:eng
[Ab] Abstract:Purpose: The purpose of this study was to evaluate the efficacy of narrow-band imaging (NBI) as a diagnostic tool for detecting bladder tumors during cystoscopy compared with white light cystoscopy (WLC). Materials and Methods: From December 2013 to June 2017, a randomized prospective study was conducted on 198 patients underwent transurethral resection of bladder tumor by a single surgeon. The patients were divided into two groups according to diagnostic method. In Group I, WLC only was performed. In Group II, NBI was additionally performed after WLC. We analyzed the rate of detection of bladder tumors as a primary endpoint. In addition, we evaluated rates of recurrence in each group. Results: There were no significant differences between the two groups in characteristics except hypertension. In the analysis of rates of detection, the probability of diagnosing cancer was 80.9% (114/141) in the WLC group, and the probability of diagnosing cancer using WLC in the NBI group was 85.5% (159/186). After switching from WLC to NBI for second-look cystoscopy in the NBI group, NBI was shown to detect additional tumors with a detection rate of 35.1% (13/37) from the perspective of the patients and 42.2% (27/64) from the perspective of the tumors. The 1-year recurrence-free rate was 72.2% in the WLC group and 85.2% in the NBI group (p=0.3). Conclusions: NBI had benefits for detecting tumors overlooked by WLC. Although the difference in the 1-year recurrence-free rate was not statistically significant, our results showed a trend for higher recurrence in the NBI group.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180311
[Lr] Last revision date:180311
[St] Status:In-Data-Review
[do] DOI:10.4111/icu.2018.59.2.98

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[PMID]: 29520185
[Au] Autor:Ahn H; Chun EJ; Lee HJ; Hwang SI; Choi DJ; Chae IH; Lee KW
[Ad] Address:Department of Radiology, Seoul National University Bundang Hospital, Seongnam 13620, Korea.
[Ti] Title:Multimodality Imaging in Patients with Secondary Hypertension: With a Focus on Appropriate Imaging Approaches Depending on the Etiologies.
[So] Source:Korean J Radiol;19(2):272-283, 2018 Mar-Apr.
[Is] ISSN:2005-8330
[Cp] Country of publication:Korea (South)
[La] Language:eng
[Ab] Abstract:Although the causes of hypertension are usually unknown, about 10% of the cases occur secondary to specific etiologies, which are often treatable. Common categories of secondary hypertension include renal parenchymal disease, renovascular stenosis, vascular and endocrinologic disorders. For diseases involving the renal parenchyma and adrenal glands, ultrasonography (US), computed tomography (CT) or magnetic resonance (MR) imaging is recommended. For renovascular stenosis and vascular disorders, Doppler US, conventional or noninvasive (CT or MR) angiography is an appropriate modality. Nuclear imaging can be useful in the differential diagnosis of endocrine causes. Radiologists should understand the role of each imaging modality and its typical findings in various causes of secondary hypertension. This article focuses on appropriate imaging approaches in accordance with the categorized etiologies leading to hypertension.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180311
[Lr] Last revision date:180311
[St] Status:In-Data-Review
[do] DOI:10.3348/kjr.2018.19.2.272

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[PMID]: 29520135
[Au] Autor:Dou S; Zheng C; Ji X; Wang W; Xie M; Cui L; Xiao W
[Ad] Address:Department of Pulmonary Medicine, Qilu Hospital, Shandong University, Jinan, People's Republic of China.
[Ti] Title:Co-existence of COPD and bronchiectasis: a risk factor for a high ratio of main pulmonary artery to aorta diameter (PA:A) from computed tomography in COPD patients.
[So] Source:Int J Chron Obstruct Pulmon Dis;13:675-681, 2018.
[Is] ISSN:1178-2005
[Cp] Country of publication:New Zealand
[La] Language:eng
[Ab] Abstract:Background: Pulmonary vascular disease, especially pulmonary hypertension, is an important complication of COPD. Bronchiectasis is considered not only a comorbidity of COPD, but also a risk factor for vascular diseases. The main pulmonary artery to aorta diameter ratio (PA:A ratio) has been found to be a reliable indicator of pulmonary vascular disease. It is hypothesized that the co-existence of COPD and bronchiectasis may be associated with relative pulmonary artery enlargement (PA:A ratio >1). Methods: This retrospective study enrolled COPD patients from 2012 through 2016. Demographic and clinical data were collected. Bhalla score was used to determine the severity of bronchiectasis. Patient characteristics were analyzed in two ways: the high (PA:A >1) and low (PA:A ≤1) ratio groups; and COPD with and without bronchiectasis groups. Logistic regression analysis was used to assess risk factors for high PA:A ratios. Results: In this study, 480 COPD patients were included, of whom 168 had radiographic bronchiectasis. Patients with pulmonary artery enlargement presented with poorer nutrition (albumin, 35.6±5.1 vs 38.3±4.9, <0.001), lower oxygen partial pressure (74.4±34.5 vs 81.3±25.4, <0.001), more severe airflow obstruction (FEV1.0, 0.9±0.5 vs 1.1±0.6, =0.004), and a higher frequency of bronchiectasis (60% vs 28.8%, <0.001) than patients in the low ratio group. Patients with both COPD and bronchiectasis had higher levels of systemic inflammation (erythrocyte sedimentation rate, <0.001 and fibrinogen, =0.006) and PA:A ratios ( <0.001). A higher PA:A ratio was significantly closely correlated with a higher Bhalla score (r=0.412, <0.001). Patients with both COPD and bronchiectasis with high ratios presented higher levels of NT-proBNP ( <0.001) and systolic pulmonary artery pressure ( <0.001). Multiple logistic analyses have indicated that bronchiectasis is an independent risk factor for high PA:A ratios in COPD patients (OR =3.707; 95% CI =1.888-7.278; <0.001). Conclusion: Bronchiectasis in COPD has been demonstrated to be independently associated with relative pulmonary artery enlargement.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180311
[Lr] Last revision date:180311
[St] Status:In-Data-Review
[do] DOI:10.2147/COPD.S156126

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[PMID]: 29515738
[Au] Autor:Nazeer A; Rai AA; Luck NH
[Ad] Address:Department of Hepatogastroenterology, Sindh Institute of Urology and Transplantation, Karachi.
[Ti] Title:Factors leading to dyspepsia in renal transplant recipients.
[So] Source:Pan Afr Med J;28:120, 2017.
[Is] ISSN:1937-8688
[Cp] Country of publication:Uganda
[La] Language:eng
[Ab] Abstract:Introduction: Renal transplantation is the definitive treatment for end stage renal disease. Patients subjected to transplantation require lifelong immunosuppression and are prone to several gastrointestinal disorders. Dyspepsia is a common disorder in these patients. The objective of this study was to determine factors leading to dyspepsia in renal (kidney) transplant recipients. Methods: It was a cross sectional study conducted at department of hepatogastroenterology and transplant sciences, SIUT Karachi, from 1-6-15 to 1-12-15 for six months. All renal transplanted patients having dyspeptic symptoms for more than 6 weeks. EGD was performed, biopsy specimens obtained from antrum and duodenum, these were sent for histopathological examination. Frequency and percentages were obtained for categorical variables, mean ± SD was calculated for continuous variables. Chi square test was used for categorical variable and student t-test for continuous variables. Results: Ninety patients were included in the study out of which 64 (71.1%) were males, mean age was 35.82 ± 10.04 years (range: 18-65 years). Gastritis (non associated) in 78 (78.6%), duodenitis in 35 (38.9%) and infection in 29 (32.2%), renal transplant recipients. Most of the patients belonged to Sindhi ethnicity, 27 (30%), followed by Punjabi. Hypertension was the most common co-morbid condition in our patients found in 29 (32.2%), while most of them don't have any co morbid condition. Duodenitis was found to be associated with tacrolimus use (p = 0.037). Conclusion: Gastritis is the most common factor accountable for this symptoms, followed by duodenitis and . Patients taking tacrolimus as immunosuppressant are more prone to develop duodenitis.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180311
[Lr] Last revision date:180311
[St] Status:In-Process
[do] DOI:10.11604/pamj.2017.28.120.12767

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[PMID]: 29515731
[Au] Autor:El Euch M; Mahfoudhi M; Skouri W; Hamida FB; Jaziri F; Abdelghani KB; Turki S; Abdallah TB
[Ad] Address:Service de Médecine Interne «A¼ Hôpital Charles Nicolle, Tunis, Tunisie.
[Ti] Title:Pseudotumeur cérébrale révélant une sarcoïdose. [Pseudotumor cerebri revealing sarcoidosis].
[So] Source:Pan Afr Med J;28:113, 2017.
[Is] ISSN:1937-8688
[Cp] Country of publication:Uganda
[La] Language:fre
[Ab] Abstract:Sarcoidosis is a multivisceral granulomatosis of unknown aetiology which may have various clinical and radiological manifestations. Cerebral sarcoidosis, although rare, can appears as a misleading pseudotumor. We report the case of a young Tunisian adult hospitalized for intracranial hypertension associated with pseudotumoral lesion on radiology, which was revealed to be systemic sarcoidosis.
[Pt] Publication type:ENGLISH ABSTRACT; JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180311
[Lr] Last revision date:180311
[St] Status:In-Process
[do] DOI:10.11604/pamj.2017.28.113.10471


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