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https://www.readbyqxmd.com/read/28649690/enzymatic-conjugation-using-branched-linkers-for-constructing-homogeneous-antibody-drug-conjugates-with-high-potency
#1
Yasuaki Anami, Wei Xiong, Xun Gui, Mi Deng, Cheng Cheng Zhang, Ningyan Zhang, Zhiqiang An, Kyoji Tsuchikama
Antibody-drug conjugates (ADCs) are emerging therapeutic agents in the treatment of cancer, and various conjugation strategies and chemical linkers have been developed to efficiently construct ADCs. Despite previous extensive efforts for improving conjugation efficiency and ADC homogeneity, most ADC linkers developed to date load only single payloads. Branched linkers that can load multiple payload molecules have yet to be fully explored. It is logical to envisage that a multi-loading strategy allows for increase in drug-to-antibody ratio (DAR) with less chemical or enzymatic modification to the antibody structure compared to traditional linear linkers, leading to efficient ADC construction, minimal destabilization of the antibody structure, and enhanced ADC efficacy...
June 26, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28644352/elevated-serum-tissue-transglutaminase-antibodies-in-children-with-eosinophilic-esophagitis
#2
Anna K Le Fevre, Marjorie M Walker, Amir Hadjiashrafy, Rani Bhatia, Joerg Mattes, Nicholas J Talley, Scott Nightingale
OBJECTIVES: This study compared the clinical and histopathological characteristics of children with eosinophilic esophagitis (EoE) and elevated anti-transglutaminase (TTG Ab) with those with EoE and normal TTG Ab titres. METHODS: Single-center chart and blinded histopathological review of patients diagnosed with EoE for a 4-year period, who had esophageal and duodenal biopsies taken at time of endoscopy, and TTG Ab measured within 6 months of biopsy. Patients with histology-proven CD were excluded...
July 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28638585/clinicopathological-study-of-seronegative-celiac-disease-in-adults-in-pakistan-a-pilot-study
#3
Mohammad Hanif Farina, Rajesh Kumar Mandhwani, Nasir Hassan Luck, Zaigham Abbas, Muhammed Mubarak, S Mudassir Laeeq, Abbas Ali Tasneem
BACKGROUND Celiac disease (CD) is usually missed, if the serology is negative. We aimed to evaluate the clinicopathological characteristics of seronegative CD (SNCD) and its response to gluten-free diet (GFD) in adult patients. METHODS This observational study was carried out at the Department of Hepatogastroenterology, Sindh Institute of Urology and Transplantation, Karachi, Pakistan from 2009 to 2015. All consecutive adult patients (≥17 years) with features of marked villous atrophy (Marsh class≥III) on duodenal biopsy, negative tissue transglutaminase IgA and IgG antibodies (anti-tTg IgA and IgG) and human leukocyte antigen (HLA) DQ2 or DQ8 serotypes were studied...
April 2017: Middle East Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28638141/al-mena-a-comprehensive-resource-of-human-genetic-variants-integrating-genomes-and-exomes-from-arab-middle-eastern-and-north-african-populations
#4
Remya Koshy, Anop Ranawat, Vinod Scaria
Middle East and North Africa (MENA) encompass very unique populations, with a rich history and encompasses characteristic ethnic, linguistic and genetic diversity. The genetic diversity of MENA region has been largely unknown. The recent availability of whole-exome and whole-genome sequences from the region has made it possible to collect population-specific allele frequencies. The integration of data sets from this region would provide insights into the landscape of genetic variants in this region. We integrated genetic variants from multiple data sets systematically, available from this region to create a compendium of over 26 million genetic variations...
June 22, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28629858/preparation-characterization-and-antioxidant-activity-of-silk-peptides-grafted-carboxymethyl-chitosan
#5
Meng Liu, Lian Min, Chen Zhu, Ziqie Rao, Liangling Liu, Wenyan Xu, Pengfeng Luo, Lihong Fan
Free radicals are closely related to the occurrence and development of aging, cancer and inflammation, the ability to scavenge free radicals is an important indicator of the antioxidant activity. In this study, we prepared a water soluble, free radical scavenging and biocompatible copolymer for regenerative therapy. Carboxymethyl chitosan (CMC) was modified with silk peptide (SP) by microbial transglutaminase (MTGase), FT-IR and NMR spectroscopy were used to confirm the successful grafting of SP to CMC. The degree of substitution was determined by ultraviolet spectrophotometry...
June 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28624578/temporary-removal-accuracy-of-tests-for-antibodies-against-tissue-transglutaminase-in-diagnosis-of-celiac-disease-without-biopsy
#6
K J Werkstetter, I R Korponay-Szabó, A Popp, V Villanacci, M Salemme, G Heilig, S T Lillevang, M L Mearin, C Ribes-Koninckx, A Thomas, R Troncone, B Filipiak, M Mäki, J Gyimesi, M Najafi, J Dolinšek, S Dydensborg Sander, R Auricchio, A Papadopoulou, A Vécsei, P Szitanyi, E Donat, R Nenna, Ph Alliet, F Penagini, H Garnier-Lengliné, G Castillejo, K Kurppa, R Shamir, A C Hauer, F Smets, S Corujeira, M van Winckel, S Buderus, S Chong, S Husby, S Koletzko
The publisher regrets that this article has been temporarily removed. A replacement will appear as soon as possible in which the reason for the removal of the article will be specified, or the article will be reinstated. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
June 15, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28606713/rhabdomyolysis-and-coeliac-disease-a-causal-or-casual-association-a-case-report-and-review-of-literature
#7
Claudia Mandato, Alessandro Rossi, Mariano Caldore, Marta Lamba, Michele Rocco, Renata Auricchio, Pietro Vajro, Paolo Siani
BACKGROUND: Rhabdomyolysis is a rare, potentially life-threatening condition, caused by multiple disorders. The association with Coeliac Disease (CD) has been rarely reported and in these cases muscular damage was imputed to hypokalemia. Herein we describe a new case of severe rhabdomyolysis in a child subsequently diagnosed as affected by CD, and review previous reports. CASE PRESENTATION: A 3-year-old boy was referred for diarrhea, brown urine, muscular pain/weakness, and no history of muscular trauma...
June 9, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28600290/high-throughput-single-cell-analysis-of-b-cell-receptor-usage-among-autoantigen-specific-plasma-cells-in-celiac-disease
#8
Bishnudeo Roy, Ralf S Neumann, Omri Snir, Rasmus Iversen, Geir Kjetil Sandve, Knut E A Lundin, Ludvig M Sollid
Characterization of Ag-specific BCR repertoires is essential for understanding disease mechanisms involving humoral immunity. This is optimally done by interrogation of paired H chain V region (VH) and L chain V region (VL) sequences of individual and Ag-specific B cells. By applying single-cell high-throughput sequencing on gut lesion plasma cells (PCs), we have analyzed the transglutaminase 2 (TG2)-specific VH:VL autoantibody repertoire of celiac disease (CD) patients. Autoantibodies against TG2 are a hallmark of CD, and anti-TG2 IgA-producing gut PCs accumulate in patients upon gluten ingestion...
June 9, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28595721/study-of-antioxidant-effects-on-malignant-glioma-cells-by-constructing-a-tumor-microvascular-structure-on-microchip
#9
Hanyang Liu, Mingsha Jie, Ziyi He, Hai-Fang Li, Jin-Ming Lin
In this work, a three-dimensional tumor-microvascular structure was simulated on a microfluidic chip for study of antioxidants effects on malignant glioma cells in vitro. The 3D hydrogel containing lumen was constructed to co-culture endothelial cells and glioma cells to mimic tumor microvascular environment. Macroporous gelatin transglutaminase (TG) hydrogel was prepared with biological and mechanical properties suitable for cells culture and nutrient refresh. To reform a vessel structure, U87 cells were dispersed in the TG-gelatin hydrogel and HUVEC cells were seeded in the lumen of hydrogel...
July 25, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28595135/soft-nanocomposites-of-gelatin-and-poly-3-hydroxybutyrate-nanoparticles-for-dual-drug-release
#10
Rafael A Bini, Mônica F Silva, Laudemir C Varanda, Marcelo A da Silva, Cécile A Dreiss
We developed a nanocomposite gel composed of gelatin and poly(3-hydroxybutyrate) polymeric nanoparticles (PNP) to be used as an injectable gel for the contemporaneous, dual sustained release of bioactive molecules. The hydrogel matrix was formed by a very simple process, using either the physical gelation of gelatin or the natural enzyme transglutaminase to covalently cross-link the gelatin chains in the presence of embedded PNP. Oscillatory rheological measurements showed that the addition of the PNP induced an increase in the storage modulus compared to pure gelatin gels, for both physical and chemical gels...
May 22, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28581064/effect-of-transglutaminase-on-quality-and-gel-properties-of-pork-and-fish-mince-mixtures
#11
Qingzheng Li, Ping Gui, Zhan Huang, Ligeng Feng, Yongkang Luo
Transglutaminase (TGase) is widely applied in the meat industry, and mixing of meat from various sources is an efficient way to enhance the quality of meat products. In this study, sensory scores, color, gel properties, water holding capacity and microstructure of mince mixtures, treated with 0.4% TGase, were determined to investigate the effect of TGase and mixing ratios (pork/fish, 10:0, 7:3, 5:5, 3:7, 0:10) on quality and gel properties of mince mixtures composed of pork and silver carp (Hypophthalmichthys molitrix)...
June 5, 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/28576718/effect-of-altered-haemodynamics-on-the-developing-mitral-valve-in-chick-embryonic-heart
#12
Kar Lai Pang, Matthew Parnall, Siobhan Loughna
Intracardiac haemodynamics is crucial for normal cardiogenesis, with recent evidence showing valvulogenesis is haemodynamically dependent and inextricably linked with shear stress. Although valve anomalies have been associated with genetic mutations, often the cause is unknown. However, altered haemodynamics have been suggested as a pathogenic contributor to bicuspid aortic valve disease. Conversely, how abnormal haemodynamics impacts mitral valve development is still poorly understood. In order to analyse altered blood flow, the outflow tract of the chick heart was constricted using a ligature to increase cardiac pressure overload...
May 30, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28576130/the-g%C3%AE-h-plc%C3%AE-1-signaling-axis-drives-metastatic-progression-in-triple-negative-breast-cancer
#13
Shang-Pen Huang, Pei-Yao Liu, Chih-Jung Kuo, Chi-Long Chen, Wei-Jiunn Lee, Yu-Hui Tsai, Yuan-Feng Lin
BACKGROUND: Distant metastasis of triple-negative breast cancer (TNBC) to other organs, e.g., the lungs, has been correlated with poor survival rates among breast cancer patients. Therefore, the identification of useful therapeutic targets to prevent metastasis or even inhibit tumor growth of TNBC is urgently needed. Gαh is a novel GTP-binding protein and known as an inactive form of calcium-dependent tissue transglutaminase. However, the functional consequences of transamidating and G-protein activities of tissue transglutaminase in promoting cancer metastasis are still controversial...
June 2, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28574011/coexistence-of-celiac-disease-type-1-diabetes-mellitus-in-children
#14
Preeti Singh, Anju Seth, Praveen Kumar, Sushma Sajjan
BACKGROUND & OBJECTIVES: Type 1 diabetes mellitus (T1DM) and celiac disease (CD) tend to co-exist due to similar underlying genetic predisposition. Failure to recognize CD in patients with T1DM predisposes them to complications. The present study was aimed to assess children with T1DM for the presence of CD. METHODS: This was a retrospective analysis of the records of children with T1DM attending paediatric endocrinology clinic at a tertiary care hospital in north India from January 2006 to May 2014...
January 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28573722/combined-effect-of-ph-and-heating-conditions-on-the-physical-properties-of-alaska-pollock-surimi-gels
#15
Myeong Gi Lee, Won Byong Yoon, Jae W Park
Physical properties of Alaska pollock surimi paste were investigated as affected by pH (4.0 and 6.0-10.0) and heating conditions (slow and fast). The highest values of gel strength and deformability, as shown by breaking force and penetration distance, were obtained at pH 7.5-8.0, while the lowest values were at pH 10.0 followed by pH 6.0 and pH 6.5, respectively. Two-step slow heating process increased the breaking strength value nearly two times higher than one-step fast heating. The effect of pH was strikingly high at pH 7...
June 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/28559621/physico-chemical-microstructural-and-rheological-properties-of-camel-milk-yogurt-as-enhanced-by-microbial-transglutaminase
#16
Nagwa H I Abou-Soliman, Sally S Sakr, Sameh Awad
Camel milk produces watery texture when it is processed to yogurt. Despite the extensive studies on microbial transglutaminase (MTGase) in dairy research, the effect of this enzyme on the properties of yogurt made from camel milk has not been studied. This study aims to investigate the impact of MTGase with and without bovine skimmed milk powder (SMP), whey protein concentrate (WPC),or β-lactoglobulin (β-lg) on physico-chemical, rheological, microstructural, and sensory properties of camel-milk yogurt during 15 days of storage period...
May 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28557021/effects-of-high-amylose-corn-starch-and-microbial-transglutaminase-on-the-textural-and-microstructural-properties-of-wheat-flour-composite-gels-at-high-temperatures
#17
Lida Shahsavani Mojarrad, Ali Rafe, Alireza Sadeghian, Razieh Niazmand
Textural and microstructural properties of composite gels (CG) of wheat flour and high amylose corn starch (Hylon VII) at different levels and temperatures mixed with microbial transglutaminase (MTGase) were investigated. The results showed by increasing Hylon starch content, the firmness increased and adhesiveness decreased. Indeed, high level of amylose and cross-linking formed by MTGase enhanced the gel elasticity and reduced adhesiveness. Moreover, MTGase had more effect on the firmness and provided more cross-linked intermolecular gel structures at high temperatures...
May 29, 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/28552057/exploitation-of-novel-molecular-targets-to-treat-idiopathic-pulmonary-fibrosis-a-drug-discovery-perspective
#18
Bhuvaneshwar Vaidya, Ruaab Patel, Aaron Muth, Vivek Gupta
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is the most common fibrosing lung disease and is caused by excessive lung scarring. IPF-associated severe mortality can be attributed to late diagnosis due to its generic symptoms, and more importantly, due to the lack of effective therapies available. Despite extensive research in past decades, lung transplant still remains the most effective treatment for IPF. Though two drugs recently approved by FDA, Pirfenidone and Nintedanib, have shown an ability to reduce the progression of disease...
May 26, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28545781/tests-for-serum-transglutaminase-and-endomysial-antibodies-do-not-detect-most-patients-with-celiac-disease-and-persistent-villous-atrophy-on-gluten-free-diets-a-meta-analysis
#19
Jocelyn A Silvester, Satya Kurada, Andrea Szwajcer, Ciarán P Kelly, Daniel A Leffler, Donald R Duerksen
BACKGROUND & AIMS: Tests to measure serum endomysial antibodies (EMA) and antibodies to tissue transglutaminase (tTG) were developed to screen for celiac disease in patients consuming gluten. However, they are commonly used to monitor patients on a gluten-free diet (GFD). We conducted a meta-analysis to assess the sensitivity and specificity of tTG IgA and EMA IgA assays in identifying patients with celiac disease who have persistent villous atrophy despite a GFD. METHODS: We searched PUBMED, EMBASE, BIOSIS, SCOPUS, clinicaltrials...
May 22, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28542044/anti-transglutaminase-6-antibody-development-in-children-with-celiac-disease-correlates-with-duration-of-gluten-exposure
#20
Luigina De Leo, Daniel Aeschlimann, Marios Hadjivassiliou, Pascale Aeschlimann, Nicola Salce, Serena Vatta, Fabiana Ziberna, Giorgio Cozzi, Stefano Martelossi, Alessandro Ventura, Tarcisio Not
OBJECTIVES: Antibodies against transglutaminase 6 (anti-TG6) have been implicated in neurological manifestations in adult patients with genetic-gluten intolerance and it is unclear whether autoimmunity to TG6 develops following prolonged gluten exposure. We measured the anti-TG6 in children with celiac disease (CD) at the diagnosis time to establish a correlation between these autoantibodies and the duration of gluten exposure. We investigated a correlation between anti-TG6 and the presence of neurological disorders...
May 24, 2017: Journal of Pediatric Gastroenterology and Nutrition
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