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https://www.readbyqxmd.com/read/28330252/organic-solvent-tolerant-metallo-protease-of-novel-isolate-serratia-marcescens-ppb-26-production-and-characterization
#1
Shikha Thakur, Nirmal Kant Sharma, Neerja Thakur, Savitri, Tek Chand Bhalla
Proteases are a class of enzymes that catalyze hydrolysis of peptide bonds of proteins. In this study, 221 proteolytic bacterial isolates were obtained by enrichment culture method from soils of various regions of Himachal Pradesh, India. From these a hyper producer of protease was screened and identified by morphological and physiological testing and by 16S rDNA sequence as Serratia marcescens PPB-26. Statistical optimization of physiochemical parameters enhanced the protease production by 75 %. Protease of S...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330164/therapeutic-potential-of-cyanobacteria-against-streptozotocin-induced-diabetic-rats
#2
Muthuraman Pandurangan, Doo Hwan Kim
Hypoglycemic effect of cyanobacteria has evaluated in the normal and streptozotocin-induced diabetic male albino rats as a mammalian model. Normal and streptozotocin-diabetic rats were orally administered cyanobacteria for 60 consecutive days, and their blood levels of glucose, insulin, C-peptide, lipid peroxidation, body weight and enzyme changes were determined using standard methods. Cyanobacteria administration reduced blood glucose level, and increased plasma insulin, C-peptide levels and restored the body weight...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330129/the-recombinant-pea-defensin-drr230a-is-active-against-impacting-soybean-and-cotton-pathogenic-fungi-from-the-genera-fusarium-colletotrichum-and-phakopsora
#3
Ariane Ferreira Lacerda, Rafael Perseghini Del Sarto, Marilia Santos Silva, Erico Augusto Rosas de Vasconcelos, Roberta Ramos Coelho, Vanessa Olinto Dos Santos, Claudia Vieira Godoy, Claudine Dinali Santos Seixas, Maria Cristina Mattar da Silva, Maria Fatima Grossi-de-Sa
Plant defensins are antifungal peptides produced by the innate immune system plants developed to circumvent fungal infection. The defensin Drr230a, originally isolated from pea, has been previously shown to be active against various entomopathogenic and phytopathogenic fungi. In the present study, the activity of a yeast-expressed recombinant Drr230a protein (rDrr230a) was tested against impacting soybean and cotton fungi. First, the gene was subcloned into the yeast expression vector pPICZαA and expressed in Pichia pastoris...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330122/production-purification-and-characterization-of-a-thermotolerant-alkaline-serine-protease-from-a-novel-species-bacillus-caseinilyticus
#4
Thirumala Mothe, Vishnuvardhan Reddy Sultanpuram
Alkaline proteases are important enzymes in many industrial applications, especially as additives in laundry detergent industry. Though there are a number of Bacillus species which are reported to be producing proteases, the efficiency of a protease produced by a novel strain has to be studied in comparison to the others. Hence, in this study, an alkaline serine protease produced by a novel species Bacillus caseinilyticus was purified and characterized for its possible usage in detergent industry. Ammonium sulphate, dialysis and DEAE column chromatographic methods were used for purification of the isolated alkaline protease...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330113/protein-fusion-tags-for-efficient-expression-and-purification-of-recombinant-proteins-in-the-periplasmic-space-of-e-coli
#5
REVIEW
Ajamaluddin Malik
Disulfide bonds occurred in majority of secreted protein. Formation of correct disulfide bonds are must for achieving native conformation, solubility and activity. Production of recombinant proteins containing disulfide bond for therapeutic, diagnostic and various other purposes is a challenging task of research. Production of such proteins in the reducing cytosolic compartment of E. coli usually ends up in inclusion bodies formation. Refolding of inclusion bodies can be difficult, time and labor consuming and uneconomical...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330110/sequence-based-approach-for-rapid-identification-of-cross-clade-cd8-t-cell-vaccine-candidates-from-all-high-risk-hpv-strains
#6
Krishna P Singh, Neeraj Verma, Bashir A Akhoon, Vishal Bhatt, Shishir K Gupta, Shailendra K Gupta, Suchi Smita
Human papilloma virus (HPV) is the primary etiological agent responsible for cervical cancer in women. Although in total 16 high-risk HPV strains have been identified so far. Currently available commercial vaccines are designed by targeting mainly HPV16 and HPV18 viral strains as these are the most common strains associated with cervical cancer. Because of the high level of antigenic specificity of HPV capsid antigens, the currently available vaccines are not suitable to provide cross-protection from all other high-risk HPV strains...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330103/profiling-and-production-of-hemicellulases-by-thermophilic-fungus-malbranchea-flava-and-the-role-of-xylanases-in-improved-bioconversion-of-pretreated-lignocellulosics-to-ethanol
#7
Manju Sharma, Chhavi Mahajan, Manpreet S Bhatti, Bhupinder Singh Chadha
This study reports thermophilic fungus Malbranchea flava as a potent source of xylanase and xylan-debranching accessory enzymes. M. flava produced high levels of xylanase on sorghum straw containing solidified culture medium. The optimization of culture conditions for production of hemicellulases was carried out using one factor at a time approach and Box-Behnken design of experiments with casein (%), inoculum age (h) and inoculum level (ml) as process variables and xylanase, β-xylosidase, acetyl esterases and arabinofuranosidase as response variables...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330086/cloning-expression-purification-and-characterization-of-human-mitochondrial-carbonic-anhydrase-va
#8
Danish Idrees, Sudhir Kumar, Syed Abdul Arif Rehman, Samudrala Gourinath, Asimul Islam, Faizan Ahmad, Md Imtaiyaz Hassan
Carbonic anhydrase VA (CAVA) is a mitochondrial enzyme that catalyzes the reversible hydration of CO2 to produce HCO3(-) and proton. CAV is primarily involved in several biosynthetic processes such as ureagenesis, gluconeogenesis and lipogenesis by providing bicarbonate ion. Here, we report a new strategy for cloning, expression and purification for CAVA in the bacterial system followed by its biophysical characterization. The cDNA of CAVA, a 801 nucleotide long that encodes a 267-amino acid polypeptide of molecular mass of 30-kDa (excluding signal peptide), was sub-cloned in the expression vector pET21c and transformed into Escherichia coli strain BL21 (DE3) for expression...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330080/transgenic-rice-plants-expressing-synthetic-cry2ax1-gene-exhibits-resistance-to-rice-leaffolder-cnaphalocrosis-medinalis
#9
R Manikandan, N Balakrishnan, D Sudhakar, V Udayasuriyan
Bacillus thuringiensis is a major source of insecticidal genes imparting insect resistance in transgenic plants. Level of expression of transgenes in transgenic plants is important to achieve desirable level of resistance against target insects. In order to achieve desirable level of expression, rice chloroplast transit peptide sequence was fused with synthetic cry2AX1 gene to target its protein in chloroplasts. Sixteen PCR positive lines of rice were generated by Agrobacterium mediated transformation using immature embryos...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329901/-pathophysiology-of-headaches
#10
Charly Gaul, Karl Meßlinger, Dagny Holle-Lee, Lars Neeb
Pathophysiological concepts of primary headache diseases have been developed significantly in the last decades. Nevertheless pathophysiology of single diseases is unexplained. Migraine headache arises from activation and sensibilization of trigeminal nociceptors, essential processes are located at the meninges and the meningeal vessels. Calcitonin gene-related peptide (CGRP) seems to have essential importance concerning migraine and cluster headache. Mechanisms leading to peripheral and central sensitization are relevant in chronification of migraine and tension-type headache...
March 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28329851/short-tslp-attenuates-toluene-diisocyanate-tdi-induced-airway-inflammation-and-inhibits-hmgb1-rage-and-long-tslp-expression
#11
Yanhong Wang, Yanqing Le, Wenqu Zhao, Yun Lin, Yue Wu, Changhui Yu, Jing Xiong, Fei Zou, Hangming Dong, Shaoxi Cai, Haijin Zhao
Short thymic stromal lymphopoietin (short TSLP), one of TSLP variants, exerts anti-inflammatory activities in endotoxin shock and colitis mouse models. Our latest work reported that short TSLP prevented house dust mite (HDM)-induced epithelial barrier disruption. Yet the role of short TSLP in toluene diisocyanate (TDI)-induced asthma is unknown. Male BALB/c mice were sensitized and challenged with TDI to generate a chemical-induced asthma model. Synthetic short TSLP peptides were given intranasally (i.n.) or intraperitoneally (i...
February 27, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28329770/antigen-presentation-profiling-reveals-recognition-of-lymphoma-immunoglobulin-neoantigens
#12
Michael S Khodadoust, Niclas Olsson, Lisa E Wagar, Ole A W Haabeth, Binbin Chen, Kavya Swaminathan, Keith Rawson, Chih Long Liu, David Steiner, Peder Lund, Samhita Rao, Lichao Zhang, Caleb Marceau, Henning Stehr, Aaron M Newman, Debra K Czerwinski, Victoria E H Carlton, Martin Moorhead, Malek Faham, Holbrook E Kohrt, Jan Carette, Michael R Green, Mark M Davis, Ronald Levy, Joshua E Elias, Ash A Alizadeh
Cancer somatic mutations can generate neoantigens that distinguish malignant from normal cells. However, the personalized identification and validation of neoantigens remains a major challenge. Here we discover neoantigens in human mantle-cell lymphomas by using an integrated genomic and proteomic strategy that interrogates tumour antigen peptides presented by major histocompatibility complex (MHC) class I and class II molecules. We applied this approach to systematically characterize MHC ligands from 17 patients...
March 22, 2017: Nature
https://www.readbyqxmd.com/read/28329747/influence-of-dipeptidyl-peptidase-iv-inhibitor-sitagliptin-on-extracellular-signal-regulated-kinases-1-2-signaling-in-rats-with-diabetic-nephropathy
#13
Xiaojun Ren, Gaohong Liu, Yanhong Wang, Wan Zhang, Fuping Xue, Rongshan Li, Weimin Yu
The protective effects of sitagliptin on the kidneys of rats with diabetic nephropathy (DN) and its influence on extracellular signal-regulated kinases 1/2 (ERK1/2) signaling were investigated. Male Wistar rats (n = 40) were randomly assigned to normal control, DN, low-dose sitagliptin intervention (ST1), or high-dose sitagliptin intervention (ST2) groups. Animals were euthanized after a 16-week treatment, and blood glucose (BG), glycosylated hemoglobin (HbA1c), urinary albumin excretion rate (AER), serum creatinine (Scr), creatinine clearance rate (Ccr), active glucagon-like peptide-1 (GLP-1) levels, kidney hypertrophy index, and renal pathohistology were determined...
March 23, 2017: Pharmacology
https://www.readbyqxmd.com/read/28329739/peptides-derived-from-glycoproteins-h-and-b-of-herpes-simplex-virus-type-1-and-herpes-simplex-virus-type-2-are-capable-of-blocking-herpetic-infection-in-vitro
#14
Abraham Cetina-Corona, Uriel López-Sánchez, Juana Salinas-Trujano, Alfonso Méndez-Tenorio, Blanca Lilia Barrón, Jesus Torres-Flores
AIMS: The aim of this study was to design peptides derived from glycoproteins H (gH) and B (gB) of herpes simplex viruses type 1 (HSV-1) and type 2 (HSV-2) with the potential to block herpetic infection and to evaluate their ability to inhibit HSV-1 and HSV-2 infection in vitro. METHODS: A library of continuous 15-25 residue stretches (CRSs) located at the surface of gH and gB from HSV-1 and HSV-2 was created. These CRSs were analyzed, and only those that were highly flexible and rich in charged residues were selected for the design of the antiviral peptides (AVPs)...
March 23, 2017: Intervirology
https://www.readbyqxmd.com/read/28329397/resveratrol-improves-vascular-function-and-mitochondrial-number-but-not-glucose-metabolism-in-older-adults
#15
Rena M Pollack, Nir Barzilai, Valentin Anghel, Ameya S Kulkarni, Aaron Golden, Pilib O'Broin, David A Sinclair, Michael S Bonkowski, Alexander J Coleville, Danielle Powell, Sharon Kim, Ruin Moaddel, Daniel Stein, Kehao Zhang, Meredith Hawkins, Jill P Crandall
Background: Resveratrol, a plant-derived polyphenol, has been reported to improve glucose metabolism and vascular function and to extend life span in animal models, but studies in humans have been inconclusive. Methods: In a randomized, double-blind crossover study, we treated older glucose-intolerant adults (n = 30) with resveratrol (2-3 g/daily) or placebo, each for 6 weeks. A standard mixed-meal test was used to assess insulin sensitivity (Matsuda index) and secretion (C-peptide deconvolution) and vascular function by reactive hyperemia peripheral arterial tonometry...
March 16, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28329361/sex-hormones-affect-outcome-in-arrhythmogenic-right-ventricular-cardiomyopathy-dysplasia-from-a-stem-cell-derived-cardiomyocyte-based-model-to-clinical-biomarkers-of-disease-outcome
#16
Deniz Akdis, Ardan M Saguner, Khooshbu Shah, Chuanyu Wei, Argelia Medeiros-Domingo, Arnold von Eckardstein, Thomas F Lüscher, Corinna Brunckhorst, H S Vincent Chen, Firat Duru
Aims: Arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) is characterized by fibrofatty infiltration of the myocardium and ventricular arrhythmias that may lead to sudden cardiac death. It has been observed that male patients develop the disease earlier and present with more severe phenotypes as compared to females. Thus, we hypothesized that serum levels of sex hormones may contribute to major arrhythmic cardiovascular events (MACE) in patients with ARVC/D. Methods and results: The serum levels of five sex hormones, sex hormone-binding globulin, high sensitivity troponin T, pro-brain natriuretic peptide, cholesterol, triglycerides, insulin, and glucose were measured in 54 ARVC/D patients (72% male)...
February 18, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28329269/proteomics-highlights-decrease-of-matricellular-proteins-in-left-ventricular-assist-device-therapy%C3%A2
#17
Jasmin Hasmik Shahinian, Bettina Mayer, Stefan Tholen, Kerstin Brehm, Martin L Biniossek, Hannah Füllgraf, Selina Kiefer, Ulrike Heizmann, Claudia Heilmann, Florian Rüter, Martin Grapow, Oliver Thomas Reuthebuch, Friedrich Eckstein, Friedhelm Beyersdorf, Oliver Schilling, Matthias Siepe
OBJECTIVES: We investigated the impact of mechanical unloading with a left ventricular assist device (LVAD) on the myocardial proteome. METHODS: We collected 11 patient-matched samples of myocardial left ventricular tissue of patients with non-ischaemic dilate cardiomyopathy, harvested at time of LVAD implant ('pre-LVAD') and heart transplant ('post-LVAD'). Samples were studied by quantitative proteomics. Further we performed histological assessment of deposited collagens and immune infiltration in both pre- and post-LVAD samples...
February 20, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28329057/coronary-artery-calcification-and-risk-of-cardiovascular-disease-and-death-among-patients-with-chronic-kidney-disease
#18
Jing Chen, Matthew J Budoff, Muredach P Reilly, Wei Yang, Sylvia E Rosas, Mahboob Rahman, Xiaoming Zhang, Jason A Roy, Eva Lustigova, Lisa Nessel, Virginia Ford, Dominic Raj, Anna C Porter, Elsayed Z Soliman, Jackson T Wright, Myles Wolf, Jiang He
Importance: Coronary artery calcification (CAC) is highly prevalent in dialysis-naive patients with chronic kidney disease (CKD). However, there are sparse data on the association of CAC with subsequent risk of cardiovascular disease and all-cause mortality in this population. Objective: To study the prospective association of CAC with risk of cardiovascular disease and all-cause mortality among dialysis-naive patients with CKD. Design, Setting, and Participants: The prospective Chronic Renal Insufficiency Cohort study recruited adults with an estimated glomerular filtration rate of 20 to 70 mL/min/1...
March 22, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28328968/c-reactive-protein-and-n-terminal-prohormone-brain-natriuretic-peptide-as-biomarkers-in-acute-exacerbations-of-copd-leading-to-hospitalizations
#19
Yu-Wei Roy Chen, Virginia Chen, Zsuzsanna Hollander, Jonathon A Leipsic, Cameron J Hague, Mari L DeMarco, J Mark FitzGerald, Bruce M McManus, Raymond T Ng, Don D Sin
There are currently no accepted and validated blood tests available for diagnosing acute exacerbations of chronic obstructive pulmonary disease (AECOPD). In this study, we sought to determine the discriminatory power of blood C-reactive protein (CRP) and N-terminal prohormone brain natriuretic peptide (NT-proBNP) in the diagnosis of AECOPD requiring hospitalizations. The study cohort consisted of 468 patients recruited in the COPD Rapid Transition Program who were hospitalized with a primary diagnosis of AECOPD, and 110 stable COPD patients who served as controls...
2017: PloS One
https://www.readbyqxmd.com/read/28328804/liver-function-in-alpha-1-antitrypsin-deficient-individuals-at-37-to-40-years-of-age
#20
Behrouz Mostafavi, Sandra Diaz, Hanan A Tanash, Eeva Piitulainen
Severe alpha-1-antitrypsin (AAT) deficiency (PiZZ) is a risk factor for liver disease, but the prevalence of liver cirrhosis and hepatocellular cancer in PiZZ adults is unknown. The risk of liver disease in adults with moderate AAT deficiency (PiSZ) is also unknown. A cohort of 127 PiZZ, 2 PiZnull, 54 PiSZ, and 1 PiSnull individuals were identified by the Swedish national neonatal AAT screening program between 1972 and 1974, when all 200,000 newborn infants in Sweden were screened for AAT deficiency. The cohort has been followed up since birth...
March 2017: Medicine (Baltimore)
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