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#28831601   2017/08/23 Save this To Up

Endothelin-1, α-Klotho, 25(OH) Vit D levels and severity of disease in scleroderma patients.

Considering the role of endothelin-1 (ET-1) in tissue remodeling and fibrosis during the development of scleroderma as well as the effect of α-Klotho in pathogenesis of calcinosis and/or endothelial cell injury and its correlation with severity of disease, this study aimed to evaluate serum ET-1, α-Klotho and 25(OH) vitamin D levels in patients with limited and diffuse scleroderma compared to healthy subjects. In this cross-sectional study, 60 scleroderma patients according to the ACR/EULAR 2013 criteria and 60 age- and sex-matched healthy controls were included. In patients, clinical examination was performed and Medsger severity scale was assessed. Serum ET-1, soluble α-Klotho and 25(OH)D3 levels were measured using ELISA kits. The mean ± SD age of patients and controls was 46.2 ± 9.6 and 47.2 ± 7.0 years, respectively. Compared to healthy controls, serum ET-1 was significantly higher in SSc patients (p = 0.001); whilst serum α-Klotho and 25(OH)D3 were significantly lower in patients (p = 0.001). The most common organs involved in patients were skin, lung, peripheral vascular and gastrointestinal system and the severity of involvement was mainly mild and/or moderate. There were no significant differences in serum ET-1 and α-Klotho levels according to the severity of different organ involvement (p > 0.05). There was no significant correlation between presence or absence of calcinosis and negative or positivity of auto-antibodies with ET-1, α-Klotho and 25(OH)D3 levels. Although our study revealed higher serum ET-1 and lower serum α-Klotho levels in SSc patients compared to healthy controls, there were not any significant correlations between their serum levels with severity of organ involvement.

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#28823846   2017/08/21 Save this To Up

iTRAQ based investigation of plasma proteins in HIV infected and HIV/HBV coinfected patients - C9 and KLK are related to HIV/HBV coinfection.

Human immunodeficiency virus (HIV) and hepatitis B virus (HBV) share similar routes of transmission, and rapid progression of hepatic and immunodeficiency diseases has been observed in coinfected individuals. Our main objective was to investigate the molecular mechanism of HIV/HBV coinfections.

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#28822808   2017/08/20 Save this To Up

BML-111 equilibrated ACE-AngII-AT1R and ACE2-Ang-(1-7)-Mas axis to protect hepatic fibrosis in rats.

It was recently reported Lipoxins (LXs) had protective effects on fibrous diseases, and renin-angiotensin-aldosterone system (RAAS) had played vital and bidirectional roles in hepatic fibrosis. In this paper, a hepatic fibrosis model, induced by carbon tetrachloride (CCL4) in rats, was used to observe the relations between RAAS and LXs, as well as to further explore the alternative anti-fibrosis mechanisms of LXs.

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#28817197   2017/08/17 Save this To Up

Estimating Seroprevalence of Herpes Simplex Virus Type 1 among Different Middle East and North African Male Populations Residing in Qatar.

HSV-1 epidemiology in the Middle East and North Africa (MENA) remains poorly understood. Our study aimed to measure HSV-1 antibody prevalence (seroprevalence) and its age-distribution among select MENA populations residing in Qatar.

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#28814089   2017/08/17 Save this To Up

Antioxidant therapy impresses in oxidative stress-induced kidney cells.

  Renal cell cancer (RCC) is not a single entity, but consists of different types of tumors derived from various parts of the nephron (epithelium or renal tubules). It is known that cancer initiation and progression is related to the balance between oxidants and antioxidants directly. Interestingly, advanced stages of cancer such as metastasis, angiogenesis are associated with cell oxidative capacity. Familiar antioxidative substances such as carotenes and vitamin C inhibit oxidation of other molecules during carcinogenesis. They can define the distinction between cancer and normal cells, destroying cancer cells while stabilizing healthy cells.

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#28810635   2017/08/16 Save this To Up

Curcumin protects against acute renal injury by suppressing JAK2/STAT3 pathway in severe acute pancreatitis in rats.

The aim of the present study was to investigate the effect of curcumin on acute renal injury in a rat model of severe acute pancreatitis (SAP). A SAP model with acute kidney injury was established in rats by retrograde injection of 5% sodium taurocholate into the pancreatic duct. The serum amylase, creatinine (Cr) and blood urea nitrogen (BUN) levels in rats were measured. Hematoxylin and eosin staining was used to assess pancreatic and renal histological changes. Serum tumor necrosis factor (TNF)-α and interleukin (IL)-6 levels were measured using ELISA kits. Renal protein levels of Janus kinase (JAK) 2/signal transducer and activator of transcription (STAT) 3 pathway components were determined by western blot assay. The results showed that curcumin significantly decreased serum amylase, Cr and BUN levels, and alleviated pancreatic and renal histological changes in SAP rats. Furthermore, curcumin markedly decreased serum TNF-α and IL-6 levels and downregulated renal protein levels of JAK2/STAT3 pathway components. These results proved that curcumin ameliorates acute renal injury in a rat model of SAP. The molecular mechanism of its effect may be associated with the suppression of the JAK2/STAT3 pathway to reduce TNF-α and IL-6 levels in SAP-induced acute renal injury. Therefore, the findings of the present study revealed the potential use of curcumin for the prevention and treatment of SAP and the associated renal injury.

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#28806491   2017/08/14 Save this To Up

The association between dysregulated adipocytokines in early pregnancy and development of Gestational Diabetes.

To investigate the association of adipocytokines and other inflammatory markers with development of GDM.

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#28805983   2017/08/14 Save this To Up

Challenges of measuring accurate estradiol levels in aromatase inhibitor-treated postmenopausal breast cancer patients on vaginal estrogen therapy.

Breast cancer patients who are taking adjuvant Aromatase Inhibitor (AI) therapy typically have extremely low estradiol levels, which are undetectable by routine clinical laboratories. Thus, it becomes difficult to assess the safety of interventions such as low-dose vaginal estrogen, which may increase estradiol levels. In this study, we aimed to assess the utility of enzyme-linked immunosorbent assay (ELISA) to measure low estradiol concentrations in breast cancer survivors on AI therapy treated with either vaginal estrogen or lubricant for atrophic vaginitis as a part of clinical trial. The samples were tested using two independent ELISA kits. Some of the samples were also evaluated using liquid chromatography-tandem mass spectrometry (LC-MS/MS) for comparison. We found that while the results by ELISA were reproducible, they were not accurate when compared to LC-MS/MS. It is possible that medications or supplements may cross-react with the ELISA reagents and confound the assessment; however, those were often not the reason for the discrepancy. Our results highlight the need for developing novel, reliable, and clinically accessible assays to measure ultra-low estradiol levels to improve care of breast cancer survivors. At this stage, based on our findings, we recommend using MS-based assays for estradiol quantitation for breast cancer survivors, whenever necessary.

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#28804234   2017/08/14 Save this To Up

Nitric Oxide: Link between Inflammation and Endothelial Dysfunction in Rheumatoid Arthritis.

Nitric oxide (NO) plays an important role in inflammatory joint disease and endothelial function. Endothelial dysfunction has been attributed to a reduction in NO bioactivity in rheumatoid arthritis (RA). However, the relationship of NO with inflammation and endothelial dysfunction in RA has not yet been investigated. To investigate the relationship of nitrite with inflammation and endothelial dysfunction in RA. Total 28 patients satisfying 2010 Rheumatoid Arthritis Classification Criteria were recruited for the study. Serum nitrite estimation was performed by Griess reaction. Flow-mediated dilation (FMD) assessed using AngioDefender. Inflammatory disease activity measures included disease activity score of 28 joints (DAS28), erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP). Proinflammatory cytokines (TNF-α, IL-6, and IL-1) measured using standard ELISA kits. Twenty-five healthy controls matched for age and sex were included for comparison. The serum nitrite level in patients with RA was markedly elevated as compared with controls ( p  < 0.05). FMD was significantly impaired in RA patients than controls ( p  < 0.05). DAS28 was significantly higher in RA patients ( p  < 0.05). Levels of ESR, CRP, TNF-α, IL-1, and IL-6 were significantly higher in RA patients than controls ( p  < 0.05). Significant positive correlation was observed between nitrite and CRP ( r  = 0.46, p  < 0.05), TNF-α ( r  = 0.53, p  < 0.05), and inverse correlation with FMD ( r =0.62, p  < 0.05). Inflammatory disease activity and endothelial dysfunction in RA are associated with increased concentration of proinflammatory cytokines and NO. Inflammatory triggered release of cytokines induced NO production that mediates endothelial dysfunction. These findings suggest a role for NO in inflammation-induced endothelial dysfunction in RA.

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#28797120   2017/08/10 Save this To Up

Medication eluting devices for the field of OBGYN (MEDOBGYN): 3D printed biodegradable hormone eluting constructs, a proof of concept study.

3D printing has the potential to deliver personalized implants and devices for obstetric and gynecologic applications. The aim of this study is to engineer customizable and biodegradable 3D printed implant materials that can elute estrogen and/or progesterone. All 3D constructs were printed using polycaprolactone (PCL) biodegradable polymer laden with estrogen or progesterone and were subjected to hormone-release profile studies using ELISA kits. Material thermal properties were tested using thermogravimetric analysis and differential scanning calorimetry. The 3D printed constructs showed extended hormonal release over a one week period. Cytocompatibility and bioactivity were assessed using a luciferase assay. The hormone-laden 3D printed constructs demonstrated an increase in luciferase activity and without any deleterious effects. Thermal properties of the PCL and hormones showed degradation temperatures above that of the temperature used in the additive manufacturing process-suggesting that 3D printing can be achieved below the degradation temperatures of the hormones. Sample constructs in the shape of surgical meshes, subdermal rods, intrauterine devices and pessaries were designed and printed. 3D printing of estrogen and progesterone-eluting constructs was feasible in this proof of concept study. These custom designs have the potential to act as a form of personalized medicine for drug delivery and optimized fit based on patient-specific anatomy.

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