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https://www.readbyqxmd.com/read/28545186/gallium-nanoparticle-mediated-reduction-of-brain-specific-serine-protease-4-in-an-experimental-metastatic-cancer-model
#1
Enas M Moustafa, Marwa Abdelhameed Mohamed, Noura M Thabet
Purpose: Tumor growth and metastasis depend on angiogenesis; therefore, efforts are being made to develop specific angiogenic inhibitors. Gallium (Ga) is the second most common metal ion, after platinum, used in cancer treatment. Its activities are numerous and various. In the present study, we aimed to investigate the effect of Ga on brain metastasis arising from hepatocellular carcinoma (HCC). Materials and methods: Forty experimental rats (divided into 4 groups) received diethylnitrosamine (DEN) at a dose (20 mg/kg...
April 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28545106/serum-microrna-signatures-as-liquid-biopsies-for-interrogating-hepatotoxic-mechanisms-and-liver-pathogenesis-in-human
#2
Julian Krauskopf, Theo M de Kok, Shelli J Schomaker, Mark Gosink, Deborah A Burt, Patricia Chandler, Roscoe L Warner, Kent J Johnson, Florian Caiment, Jos C Kleinjans, Jiri Aubrecht
MicroRNAs (miRNAs) released into the peripheral circulation upon cellular injury have shown a promise as a new class of tissue-specific biomarkers. We were first to demonstrate that next-generation sequencing analysis of serum from human subjects with acetaminophen-induced liver injury revealed a specific signature of circulating miRNAs. We consequently hypothesized that different types of hepatic liver impairments might feature distinct signatures of circulating miRNAs and that this approach might be useful as minimally invasive diagnostic "liquid biopsies" enabling the interrogation of underlying molecular mechanisms of injury in distant tissues...
2017: PloS One
https://www.readbyqxmd.com/read/28544674/direct-hydroxylation-of-benzene-to-phenol-by-cytochrome-p450bm3-triggered-by-amino-acid-derivatives
#3
Osami Shoji, Sota Yanagisawa, Joshua Kyle Stanfield, Kazuto Suzuki, Zhiqi Cong, Hiroshi Sugimoto, Yoshitsugu Shiro, Yoshihito Watanabe
Selective hydroxylation of benzene to phenol, without formation of side products resulting from overoxidation, was catalyzed by cytochrome P450BM3 (P450BM3) with the assistance of amino acid derivatives as decoy molecules. The catalytic turnover rate and the total turnover number reached 259 min-1P450BM3-1 and 40,200 P450BM3-1 when N-heptyl-L-proline modified with L-phenyl alanine (C7-L-Pro-L-Phe) was used as the decoy molecule. This work shows that amino acid derivatives that have a totally different structure from fatty acids can be used as decoy molecules for aromatic hydroxylation by wild-type P450BM3...
May 22, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28544621/a-cell-adhesive-peptide-from-tropoelastin-promotes-sequential-cell-attachment-and-spreading-via-distinct-receptors
#4
Pearl Lee, Giselle C Yeo, Anthony S Weiss
Tropoelastin is the dominant monomer that assembles to form elastin, which confers elasticity to vertebrate elastic tissues including skin, arteries and lungs. Tropoelastin interacts with cells through cell surface receptors including integrins and glycosaminoglycans (GAGs). As the region 17-18 is recognized as a key region in cell attachment and spreading, we utilized C-terminal truncated tropoelastin constructs containing dissected sections of domain 18. We mapped a cell interactive sequence of tropoelastin to domain 17 and the first 6 amino acids (aa) of domain 18...
May 24, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28544244/branched-chain-amino-acids-supplementation-modulates-tgf-%C3%AE-1-smad-signaling-pathway-and-interleukins-in-ccl4-induced-liver-fibrosis
#5
Naglaa F Khedr, Eman G Khedr
The alterations and low levels of circulating branched chain amino acids (BCAAs), leucine, isoleucine and valine, are associated with liver diseases. The study was designed to evaluate hepatoprotective effect of BCAAs on CCl4 -induced liver fibrosis and to investigate the molecular mechanisms underlying these effects in rats. Thirty male rats were divided into three groups. Control group (n=10), CCl4 group (n=10); rats were injected with CCl4 (1 mL/kg of 0.5:1 v/v injected i.p. twice weekly for 12 weeks). CCl4 +BCAAs group (n=10); rats were injected with similar doses of CCl4 and supplemented with a mixture of 600 mg/kg BCAAs (2: 1: 1...
May 23, 2017: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/28544232/peripartum-cytokine-flares-in-a-multiethnic-cohort-of-chronic-hepatitis-b-carriers-does-not-correlate-with-hepatitis-b-virus-suppression-or-increased-risk-of-liver-disease
#6
Shivali S Joshi, Daniel Wong, Eliana Castillo, Mark G Swain, Carla S Coffin
PROBLEM: In chronic hepatitis B (CHB) carriers, alanine transaminase (ALT) flares are common in the peripartum period. There are limited data on immunological changes of pregnancy in CHB. We hypothesize that in pregnant CHB carriers, the Th1/Th2 cytokine ratio is altered resulting in changes in biochemical/virological and liver fibrosis markers. STUDY METHODS: Serum from 38 pregnant/post-partum CHB carriers (median age 32 years, 53% Asian, 8 HBeAg(+) ) was tested for HBV DNA, quantitative HBV surface antigen, ALT and liver fibrosis by transient elastography (TE)...
May 19, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28543991/sensitivity-and-specificity-of-plasma-alt-alp-and-bile-acids-for-hepatitis-in-labrador-retrievers
#7
K Dirksen, I A Burgener, J Rothuizen, T S G A M van den Ingh, L C Penning, B Spee, H Fieten
BACKGROUND: Biochemical indicators for diagnosing liver disease are plasma alanine aminotransferase activity (ALT), alkaline phosphatase activity (ALP), and bile acid concentration (BA). OBJECTIVES: To determine the sensitivity and specificity of ALT, ALP, and BA for detecting primary hepatitis (PH) in clinically healthy Labrador retrievers and investigate whether ALT and ALP can discriminate between dogs with PH and nonspecific reactive hepatitis (RH). ANIMALS: 191 clinically healthy and 51 clinically ill Labrador retrievers with hepatic histopathology...
May 23, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28543565/lactate-supplementation-in-severe-traumatic-brain-injured-adults-by-primed-constant-infusion-of-sodium-l-lactate
#8
Stephanie M Wolahan, Howard C Mao, Courtney Real, Paul M Vespa, Thomas C Glenn
Carbohydrate fuel augmentation following traumatic brain injury may be a viable treatment to improve recovery when cerebral oxidative metabolism of glucose is depressed. We performed a primed constant sodium L-lactate infusion in 11 moderate to severely brain injured adults. Blood was collected before and periodically during the infusion study. We quantified global cerebral uptake of glucose and lactate and other systemic metabolites associated with energy metabolism. Our hypothesis was that cerebral lactate uptake, as measured by the arteriovenous difference of lactate (AVDlac), would increase in severely injured TBI patients in the neurocritical care unit...
May 20, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28542385/cadmium-toxicity-induced-contrasting-patterns-of-concentrations-of-free-sarcosine-specific-amino-acids-and-selected-microelements-in-two-noccaea-species
#9
Veronika Zemanová, Milan Pavlík, Daniela Pavlíková
Cadmium (Cd) toxicity affects numerous metabolic processes in plants. In the presence of Cd, plants accumulate specific amino acids which may be beneficial to developing Cd tolerance. Our study aimed to characterize the changes in the metabolism of selected free amino acids that are associated with Cd tolerance, and investigate the levels of selected microelements in order to relate these changes to the adaptation strategies of two metallophytes-Noccaea caerulescens (Redlschlag, Austria) and Noccaea praecox (Mežica, Slovenia)...
2017: PloS One
https://www.readbyqxmd.com/read/28540984/inverse-relationship-between-hepatic-steatosis-and-alanine-aminotransferase-with-sex-hormone-binding-globulin-in-men
#10
In Ho Seo, Hyung Bin Lee, Shinhye Kim, Yong Jae Lee, Dong Hyuk Jung
PURPOSE: Sex hormone-binding globulin (SHBG) is a serum glycoprotein produced predominantly in hepatocytes. As such, the synthesis of SHBG could be associated with liver function and metabolic syndrome. Alanine aminotransferase (ALT) levels could reflect hepatocellular injury and insulin resistance; however, the relationship between hepatic steatosis and ALT with SHBG has not been investigated in humans. The objective of this study was to investigate the associations between SHBG and hepatocyte damage among Korean male patients with hepatic steatosis enrolled in a health examination program...
July 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/28540941/chiral-differentiation-of-d-and-l-alanine-by-permethylated-%C3%AE-cyclodextrin-irmpd-spectroscopy-and-dft-methods
#11
Sung-Sik Lee, Soojin Park, Yin Hong, Jae-Ung Lee, Jun-Hyeok Kim, Dongkyung Yoon, Xianglei Kong, Sungyul Lee, Han Bin Oh
The gaseous chiral differentiation of alanine by permethylated β-cyclodextrin was studied using IRMPD spectroscopy and density functional theory calculations. The protonated non-covalent complexes of permethylated β-cyclodextrin and d- or l-alanine were mass-selected and investigated by IR laser pulses in the wavelength region of 2650-3800 cm(-1). The remarkably different features of the IRMPD spectra for d- and l-alanine are described, and their origin is elucidated by quantum chemical calculations. We show that the differentiation of the experimentally observed spectral features is the result of different local interactions of d- and l-alanine with permethylated β-cyclodextrin...
May 25, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28540663/bmaa-and-neurodegenerative-illness
#12
Paul Alan Cox, Richard M Kostrzewa, Gilles J Guillemin
The cyanobacterial toxin β-N-methylamino-L-alanine (BMAA) now appears to be a cause of Guamanian amyotrophic lateral sclerosis/parkinsonism dementia complex (ALS/PDC). Its production by cyanobacteria throughout the world combined with multiple mechanisms of BMAA neurotoxicity, particularly to vulnerable subpopulations of motor neurons, has significantly increased interest in investigating exposure to this non-protein amino acid as a possible risk factor for other forms of neurodegenerative illness. We here provide a brief overview of BMAA studies and provide an introduction to this collection of scientific manuscripts in this special issue on BMAA...
May 24, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28540298/the-clinical-values-of-serum-markers-in-the-early-prediction-of-hepatocellular-carcinoma
#13
Bo Li, Boan Li, Tongsheng Guo, Zhiqiang Sun, Xiaohan Li, Xiaoxi Li, Han Wang, Weijiao Chen, Peng Chen, Yuanli Mao
The early prediction values of diagnostic markers for hepatocellular carcinoma (HCC) are still unclear at present. This study evaluated the prediction value of ten serum markers in HCC. A total of 109 cases of hepatic cirrhosis patients were followed up for 36 months and the relationship between the lifetime risk of developing HCC and levels of serum markers was analyzed. 31.2 (34/109) percent of hepatic cirrhosis patients developed HCC during the study's timeframe. Higher alpha-fetoprotein (AFP), alpha-fetoprotein-L3 (AFP-L3), alanine aminotransferase (ALT), and AFP-L3/AFP ratio levels are potential risk factors for malignization in hepatic cirrhosis patients (RR = 2...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28539856/natural-regulatory-anticoagulants-proteins-among-sudanese-patients-with-dengue-virus-infection
#14
Bashir Abdrhman Bashir, Osman Khalaf Allah Saeed
THE COAGULATION SYSTEM: Abnormalities in natural physiologic anticoagulants are observed in dengue infection. Laboratory values such as protein C (PC), protein S (PS), and antithrombin (AT) indicate this problem on the coagulation system in dengue. Recently, an interrelationship between dengue and the levels of natural anticoagulants has been observed. OBJECTIVE: The study conducted to find out the effect of dengue on the natural anticoagulant proteins. METHODS: A case-control study was conducted in Port Sudan Teaching Hospital from February 2013 to June 2014 for 334 cases of dengue caused by dengue virus, 217 (65%) males and 117 (35%) were females along with 101 cases of control 64 (63...
April 2017: International Journal of Health Sciences
https://www.readbyqxmd.com/read/28539815/increase-of-soluble-programmed-cell-death-ligand-1-in-patients-with-chronic-hepatitis-c
#15
Satoshi Yamagiwa, Toru Ishikawa, Nobuo Waguri, Soichi Sugitani, Kenya Kamimura, Atsunori Tsuchiya, Masaaki Takamura, Hirokazu Kawai, Shuji Terai
Objectives: To determine whether the soluble programmed cell death ligand 1 (sPD-L1) levels in patients with chronic hepatitis C (CHC) are associated with the clinical features of the disease and the efficacy of treatment, including interferon (IFN)-α. Methods: We investigated the sPD-L1 levels in the sera of 80 genotype 1b Japanese patients with CHC who underwent 12 weeks of telaprevir (TVR)- or simeprevir (SMV)-based triple therapy followed by 12 weeks of dual therapy with pegylated IFN-α plus ribavirin...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28539746/protective-effect-of-sorrel-extract-on-adult-rats-treated-by-carbon-tetrachloride
#16
Abdullah Glil Alkushi
CONTEXT: Heart, kidneys, and liver are the vital organs present in vertebrates and some other animals. They have a wide range of functions, such as maintaining homeostasis, detoxification, protein synthesis, and production of biochemical, that are necessary for digestion and maintaining circulation. These organs are necessary for the survival, and currently, there are no means to compensate for the absence of their functionalities in a long term. The damage of liver can affect other vital organs, including kidneys and heart...
April 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28539743/hepatoprotective-antihyperlipidemic-and-anti-inflammatory-activity-of-moringa-oleifera-in-diabetic-induced-damage-in-male-wistar-rats
#17
Elizabeth I Omodanisi, Yapo G Aboua, Novel N Chegou, Oluwafemi O Oguntibeju
BACKGROUND: The number of individuals with diabetes is increasing daily, and diabetes is presently estimated to affect about 422 million adults worldwide. Conventional drugs used to treat diabetes are not without severe side effects, accessibility, and affordability. This study elucidates the potential effects of Moringa oleifera (MO) leaves extract to manage and treat diabetes induced in male Wistar rats. MATERIALS AND METHODS: Adult male Wistar rats were randomly divided into four groups (n = 12/group): NC - nondiabetic rats (positive control), MO - nondiabetic-treated rats, DM - diabetic rats (negative control), DM + MO - diabetic-treated rats...
April 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28539741/potential-roles-of-kleinhovia-hospita-l-leaf-extract-in-reducing-doxorubicin-acute-hepatic-cardiac-and-renal-toxicities-in-rats
#18
Yulia Yusrini Djabir, M Aryadi Arsyad, Sartini Sartini, Subehan Lallo
BACKGROUND: Doxorubicin (DOX) is a potent chemotherapy agent; however, its use may lead to cardiac, hepatic, and renal dysfunction. Kleinhovia hospita L extract contains antioxidant compounds that have been shown to reduce chemical-induced hepatotoxicity. OBJECTIVES: This study aimed to examine the protective effects of Kleinhovia sp. extract to reduce DOX acute toxicities. MATERIALS AND METHODS: Thirty male rats were assigned to the following groups: Group I as controls, Group II was given DOX i...
April 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28538411/gender-difference-in-the-association-between-aminotransferase-levels-and-hypertension-in-a-chinese-elderly-population
#19
Lei Wu, Yao He, Bin Jiang, Miao Liu, Shanshan Yang, Yiyan Wang, Jing Zeng, Yao Yao, Jianhua Wang
Few epidemiological studies have examined the association between serum aminotransferase levels and hypertension, and have yielded inconsistent results.A cross-sectional study was performed in a Chinese rural elderly population. A total of 2174 participants with normal range of aminotransferase levels and without excessive drinking were included in the present study. Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels were measured on fasting morning serum samples using the Kinetic method...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28537661/effect-of-urinary-trypsin-inhibitor-on-inflammatory-cytokines-and-organ-function-in-patients-with-cardiopulmonary-bypass
#20
H-Y Xu, X-S Rong, D-P Wang, S-Y Jiang, Z-D Zang, W Xia, F Zhang, J Yan
OBJECTIVE: This research is to study the effect of urinary trypsin inhibitor (UTI) on inflammatory cytokines and organ function in patients with cardiopulmonary bypass. PATIENTS AND METHODS: From February 2015 to February 2016, 40 patients that had undergone cardiopulmonary bypass surgery in our hospital were selected and randomly divided into the observation group and the control group with 20 patients in each group. Patients in the control group were intravenously injected with 5000 U/kg normal saline during the operation and 5000 U/kg•d-1 at 1-3 days postoperatively, while the patients in the observation group received intravenous injection of the same amount of UTI at pre-operation (T0), post-anesthesia (T1), after aortic opening (T2), after cardiopulmonary bypass 4h (T3), 8h (T4), 24h (T5), 48h (T6), and 72h (T7)...
May 2017: European Review for Medical and Pharmacological Sciences
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