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urinary peptides

Guo Liu, Shengwei Sun, Baoyan Guo, Benchun Miao, Zhen Luo, Zumeng Xia, Danyang Ying, Fei Liu, Bin Guo, Jian Tang, Yong Cao, Jianyin Miao
Casein phosphopeptides (CPPs) have been demonstrated to be calcium chelators. Unfortunately, few studies have been reported on the effects of CPPs on the mechanism of the uptake and absorption of Ca2+ and bone metabolism. In this study, a monomeric peptide fraction isolated by RP-HPLC (F6-1) that possessed high calcium transport capacity in Caco-2 cell monolayers was separated and characterized. The effects of F6-1 on the absorption mechanisms of Ca2+ in a Caco-2 monolayer model and bone metabolism in rats were investigated...
March 20, 2018: Food & Function
Hanwen Tian, Junming Miao, Fumei Zhang, Feng Xiong, Feimei Zhu, Jinyu Li, Xiaoying Wang, Shanzhe Chen, Junli Chen, Ning Huang, Yi Wang
The urinary tract is vulnerable to frequent challenges from environmental microflora. Uropathogenic Escherichia coli (UPEC) makes a major contribution to urinary tract infection (UTI). Previous studies have characterized positive roles of non-histone nuclear protein HMGN2 in lung epithelial innate immune response. In the study presented here, we found HMGN2 expression was up-regulated in UPEC J96-infected urothelium. Surprisingly, over-expression of HMGN2 promoted disruption of BECs 5637 cells' intercellular junctions by down-regulating tight junction (TJs) components' expression and physical structure under J96 infection...
March 17, 2018: Acta Biochimica Polonica
Milton Packer
Three classes of anti-hyperglycaemic medications are distinguished by their urinary sodium excretion-enhancing and blood pressure-lowering actions: long-acting glucagon-like peptide-1 receptor agonists, dipeptidyl peptidase-4 inhibitors and sodium-glucose co-transporter-2 inhibitors. Yet, these drugs exert different effects on macrovascular risk. Glucagon-like peptide-1 receptor agonists reduce atherosclerotic thromboembolic events, but have little effect on heart failure; sodium-glucose co-transporter-2 inhibitors decrease the occurrence of heart failure, but have minimal effect on myocardial infarction and stroke; and dipeptidyl peptidase-4 inhibitors do not ameliorate either atherosclerotic thromboembolic events or heart failure...
March 12, 2018: Diabetic Medicine: a Journal of the British Diabetic Association
Ehsan Choubini, Mehri Habibi, Ahmad Khorshidi, Amir Ghasemi, Mohammad Reza Asadi Karam, Saeid Bouzari
Proteus mirabilis is a common pathogen in urinary tract infections (UTIs). There is no vaccine against P. mirabilis, thus a novel multi-peptide vaccine of MrpA, UcaA and Pta factors of P. mirabilis we designed and a mice model was used to evaluate its efficacy in combination with AddaVax adjuvant. According to the bioinformatics studies, 7 fragments of MrpA (31-75, 112-146), UcaA (68-117, 132-156) and Pta (210-265, 340-400, 496-570) with B and T cell epitope regions were selected for fusion construction. Mice subcutaneously vaccinated with the fusion MrpA...
March 8, 2018: Molecular Immunology
Özcan Örsçelik, Buğra Özkan, Ayça Arslan, Emre Ertan Şahin, Ozan Sakarya, Orçun Ali Sürmeli, Şenay Balcı Fidancı, Ahmet Çelik, Burak Yavuz Çimen, İsmail Türkay Özcan
OBJECTIVE: Heart failure (HF) is a clinical syndrome resulting from structural or functional damages. Although clinical trials have shown that the plasma renin-angiotensin system (RAS) activation decreases HF functional status and increases hospitalization for HF patients, the effect of intrarenal RAS activity is still unknown. In this study, we investigated the relationship between the New York Heart Association (NYHA) class, duration, and number of hospitalizations in the previous year and urinary angiotensinogen (UAGT) in patients with HF with reduced ejection fraction (HFrEF)...
March 2018: Anatolian Journal of Cardiology
Rebecca K Campbell, Kerry J Schulze, Saijuddin Shaikh, Rubhana Raqib, Lee S F Wu, Hasmot Ali, Sucheta Mehra, Keith P West, Parul Christian
Environmental enteric dysfunction (EED) and systemic inflammation (SI) are common in developing countries and may cause stunting. In Bangladesh, >40 % of preschool children are stunted, but EED and SI contributions are unknown. We aimed to determine the impact of EED and SI (assessed with multiple indicators) on growth in children (n 539) enrolled in a community-based randomised food supplementation trial in rural Bangladesh. EED was defined with faecal myeloperoxidase, α-1 antitrypsin and neopterin and serum endotoxin core antibody and glucagon-like peptide-2, consolidated into gut inflammation (GI) and permeability (GP) scores, and urinary lactulose:mannitol α-1 acid glycoprotein (AGP) characterised SI...
February 2018: British Journal of Nutrition
Véronique Schulten, Luise Westernberg, Giovanni Birrueta, John Sidney, Sinu Paul, Paula Busse, Bjoern Peters, Alessandro Sette
Mouse allergy has become increasingly common, mainly affecting laboratory workers and inner-city households. To date, only one major allergen, namely Mus m 1, has been described. We sought to identify T cell targets in mouse allergic patients. PBMC from allergic donors were expanded with either murine urine or epithelial extract and subsequently screened for cytokine production (IL-5 and IFNγ) in response to overlapping peptides spanning the entire Mus m 1 sequence, peptides from various Mus m 1 isoforms [major urinary proteins (MUPs)], peptides from mouse orthologs of known allergens from other mammalian species and peptides from proteins identified by immunoproteomic analysis of IgE/IgG immunoblots of mouse urine and epithelial extracts...
2018: Frontiers in Immunology
Sailendra Nath Sarma, Ammar Saleem, Jin-Yong Lee, Maki Tokumoto, Gi-Wook Hwang, Hing Man Chan, Masahiko Satoh
Cadmium (Cd) is a common environmental pollutant with known toxic effects on the kidney. Urinary metabolomics is a promising approach to study mechanism by which Cd-induced nephrotoxicity. The aim of this study was to elucidate the mechanism of Cd toxicity and to develop specific biomarkers by identifying urinary metabolic changes after a long-term of Cd exposure and with the critical concentration of Cd in the kidney. Urine samples were collected from wild-type 129/Sv mice after 67 weeks of 300 ppm Cd exposure and analyzed by ultra performance liquid chromatography connected with quadrupole time of flight mass spectrometer (UPLC-QTOF-MS) based metabolomics approach...
2018: Journal of Toxicological Sciences
Christina B Ching, Sudipti Gupta, Birong Li, Hanna Cortado, Nicholas Mayne, Ashley R Jackson, Kirk M McHugh, Brian Becknell
The signaling networks regulating antimicrobial activity during urinary tract infection (UTI) are incompletely understood. Interleukin-6 (IL-6) levels increase with UTI severity, but the specific contributions of IL-6 to host immunity against bacterial uropathogens are unknown. To clarify this we tested whether IL-6 activates the Stat3 transcription factor, to drive a program of antimicrobial peptide gene expression in infected urothelium during UTI. Transurethral inoculation of uropathogenic Escherichia coli led to IL-6 secretion, urothelial Stat3 phosphorylation, and activation of antimicrobial peptide transcription, in a Toll-like receptor 4-dependent manner in a murine model of cystitis...
February 20, 2018: Kidney International
Krister Bamberg, Ulrika Johansson, Karl Edman, Lena William-Olsson, Susanna Myhre, Anders Gunnarsson, Stefan Geschwindner, Anna Aagaard, Anna Björnson Granqvist, Frédéric Jaisser, Yufeng Huang, Kenneth L Granberg, Rasmus Jansson-Löfmark, Judith Hartleib-Geschwindner
Excess mineralocorticoid receptor (MR) activation promotes target organ dysfunction, vascular injury and fibrosis. MR antagonists like eplerenone are used for treating heart failure, but their use is limited due to the compound class-inherent hyperkalemia risk. Here we present evidence that AZD9977, a first-in-class MR modulator shows cardio-renal protection despite a mechanism-based reduced liability to cause hyperkalemia. AZD9977 in vitro potency and binding mode to MR were characterized using reporter gene, binding, cofactor recruitment assays and X-ray crystallopgraphy...
2018: PloS One
Grace Cui, Walter J Akers, Michael J Scott, Michael Nassif, John S Allen, Anne H Schmieder, Krishna S Paranandi, Akinobu Itoh, Dmitry D Beyder, Samuel Achilefu, Gregory A Ewald, Gregory M Lanza
Treatment of advanced heart failure with implantable LVADs is increasing, driven by profound unmet patient need despite potential serious complications: bleeding, infection, and thrombus. The experimental objective was to develop a sensitive imaging approach to assess early thrombus accumulation in LVADs under operational high flow and high shear rates. Methods : A monomeric bifunctional ligand with a fibrin-specific peptide, a short spacer, and99m Tc chelating amino acid sequence (F1A) was developed and compared to its tetrameric PEG analogue (F4A)...
2018: Theranostics
Min Liu, Huan Chen, Min Tong, Jinping Zhou, Xiyu Wu
STUDY DESIGN: Seventy-five Sprague-Dawley (SD)rats were randomly divided into sham, complete spinal cord transection (CSCT)and hyperbaric oxygen (HBO) groups. Among them, rats in HBO group were further divided into 3 h group (HBO1) and 12 h group (HBO2). OBJECTIVE: To study the effects of ultra-early HBO therapy on femoral calcitonin gene-related peptide (CGRP) and bone metabolism of rats with CSCT. SUMMARY OF BACKGROUND DATA: Complete SCI is still an unresolved problem in clinical practice...
February 16, 2018: Spine
Barbora Kuntová, Romana Stopková, Pavel Stopka
Mammalian olfaction depends on chemosensory neurons of the main olfactory epithelia (MOE), and/or of the accessory olfactory epithelia in the vomeronasal organ (VNO). Thus, we have generated the VNO and MOE transcriptomes and the nasal cavity proteome of the house mouse, Mus musculus musculus . Both transcriptomes had low levels of sexual dimorphisms, while the soluble proteome of the nasal cavity revealed high levels of sexual dimorphism similar to that previously reported in tears and saliva. Due to low levels of sexual dimorphism in the olfactory receptors in MOE and VNO, the sex-specific sensing seems less likely to be dependent on receptor repertoires...
2018: Frontiers in Genetics
Sajjad Ahmadpour, Zohreh Noaparast, Seyed Mohammad Abedi, Seyed Jalal Hosseinimehr
BACKGROUND: Breast cancer is the most common malignancy among women in the world. Development of novel tumor-specific radiopharmaceuticals for early breast tumor diagnosis is highly desirable. In this study we developed99m Tc-HYNIC-(tricine/EDDA)-Lys-FROP peptide with the ability of specific binding to MCF-7 breast tumor. METHODS: The FROP-1 peptide was conjugated with the bifunctional chelator hydrazinonicotinamide (HYNIC) and labeled with99m Tc using tricine/EDDA co-ligand...
February 19, 2018: Journal of Biomedical Science
Baodi Zhang, Jia Wei, Xuan Wu, Lei Wang, Hongdan Huo, Junrong Wang
Transurethral plasma kinetic resection is an efficient and safe surgery for the treatment of benign prostatic hyperplasia. Solifenacin succinate (SOL) is safe and clinically efficient for patients who endure transurethral resection of the prostate (TURP) during the perioperative period. The objective of this study was to evaluate the clinical optimal dose of SOL for nursing patients after TURP during the perioperative period. Patients were recruited and randomized into three groups: SOL (3 mg), SOL (6 mg), and SOL (10 mg)...
February 2018: Experimental and Therapeutic Medicine
Lodi C W Roksnoer, Estrellita Uijl, René de Vries, Ingrid M Garrelds, A H Jan Danser
Increasing the degree of renin-angiotensin system (RAS) blockade by combining ≥2 RAS blockers marginally increases efficacy, but results in more side effects. Hence, interference with other systems is currently being investigated, like potentiation of natriuretic peptides with neprilysin inhibitors. However, the neprilysin inhibitor thiorphan was recently found to increase endothelin-1 when administered to TGR(mREN2)27 (Ren2) rats on top of RAS blockade. Here we investigated whether this effect is thiorphan-specific, by comparing the neprilysin inhibitors thiorphan and sacubitril, administered by osmotic minipumps at a low or high dose for 7 days, in Ren2 rats...
February 9, 2018: European Journal of Pharmacology
Yelda Asad, Sajjad Ahmad, Thanyada Rungrotmongkol, Kara E Ranaghan, Syed Sikander Azam
The bacterium Providencia stuartii, is associated with urinary tract infections and is the most common cause of purple urine bag syndrome. The increasing multi-drug resistance pattern shown by the pathogen and lack of licensed vaccines make treatment of infections caused by P. stuartii challenging. As vaccinology data against the pathogen is scarce, an in silico proteome based Reverse Vaccinology (RV) protocol, in combination with subtractive proteomics is introduced in this work to screen potential vaccine candidates against P...
January 31, 2018: Journal of Molecular Graphics & Modelling
Nora Choi, Claudio Rigatto, Michael Zappitelli, Ang Gao, Simon Christie, Brett Hiebert, Rakesh C Arora, Julie Ho
Background: Acute kidney injury (AKI) following cardiac surgery leads to increased morbidity and mortality. Characterization and validation of early biomarkers of AKI may ultimately facilitate early therapeutic intervention. We have previously identified that elevated urinary hepcidin-25 is inversely and independently associated with the development of AKI in adult cardiac surgery patients. Hepcidin-25 is an antimicrobial peptide that sequesters iron intracellularly, and its elevation following human ischemia reperfusion injury may represent a renoprotective response to minimize renal injury...
2018: Canadian Journal of Kidney Health and Disease
V Guarnotta, G Pizzolanti, A Ciresi, C Giordano
PURPOSE: To evaluate the effect of pasireotide on β-cell and adipose function in patients with Cushing's disease (CD). METHODS: Clinical and hormonal parameters, insulin secretion evaluated by HOMA-β and by the area under the curve (AUC2h) of C-peptide during a mixed meal tolerance test and insulin sensitivity, evaluated by the euglycaemic hyperinsulinaemic clamp, were evaluated in 12 patients with active CD, before and after 6 and 12 months of pasireotide. In addition, a panel of adipokines including leptin (Ob), leptin/leptin receptor ratio (Ob/Ob-R ratio), adiponectin, resistin, visfatin, adipocyte fatty acid binding protein (AFABP) and non-esterified fatty acids (NEFAs) was evaluated at baseline and after 12 months of pasireotide...
February 2, 2018: Journal of Endocrinological Investigation
Motoyuki Nakamura, Yasuhiro Ishibashi, Fumitaka Tanaka, Shinichi Omama, Toshiyuki Onoda, Tomohiro Takahashi, Shuko Takahashi, Kozo Tanno, Masaki Ohsawa, Kiyomi Sakata, Makoto Koshiyama, Kuniaki Ogasawara, Akira Okayama
BACKGROUND: The ability of cardiovascular biomarkers to predict the incidence of stroke subtypes remains ill-defined in the general population.Methods and Results:The blood levels of B-type natriuretic peptide (BNP) and high-sensitivity C-reactive protein (hs-CRP) and urinary albumin corrected by urinary creatinine (UACR) were determined in a general population (n=13,575). The ability to predict the incidence of ischemic stroke subtypes (lacunar, atherothrombotic, cardioembolic) for each biomarker was assessed based on the area under the receiver-operating characteristic curve (AUC-ROC) and using Cox proportional hazard modeling...
January 30, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
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