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Wei-Si Ma, Jun Chen, Shi-Wu Yan, Xin Wang, Zhi-Yuan Dong, Lin-Yu Li, Li-Ying Yang, Bin Yang
Gray mold disease is one of the most important diseases of planted Paris polyphylla var. yunnanensis, the disease appeared primarily as blossom blights and fruit rots, but also as stem rots, leaf rots.In this study, the pathogenetic fungi was isolated from plant tissue or sclerotia that covering the fruit of diseased P. polyphylla var. yunnanensis, the pathogen was certified according to Koch's Postulation. The pathogen produced abundant black, irregular sclerotia on surface of diseased plants and potato dextrose agar...
July 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Esra Nurten Yer, Mehmet Cengiz Baloglu, Sezgin Ayan
Heat shock proteins (Hsps) play a key role for regulation of the changes during different stress conditions including salinity, drought, heavy metal and extreme temperature. Molecular based studies on the response mechanisms of forest trees to abiotic stresses started in 2006 when Populus trichocarpa genome sequence was completed as a model tree species. In recent years, bioinformatic analyzes have been carried out to determine functional gene regions of tree species. In this study, sHsp, Hsp40, Hsp60, Hsp90 and Hsp100 gene family members were identified in poplar genome...
August 12, 2018: Gene
Xuena Huang, Shiguo Li, Yangchun Gao, Aibin Zhan
Biological response to rapid changing environments is an outstanding research question in ecology and evolution. Biological invasions provide excellent "natural" experiments to study such a complex response process, as invaders often encounter rapidly changing environments during biological invasions. The regulation of heat shock proteins (Hsp) is a common pathway responsible for various environmental stresses; however, the comprehensive study on Hsp system across the whole genome and potential roles in determining invasion success are still largely unexplored...
2018: Frontiers in Physiology
Sanam Sane, Andre Hafner, Rekha Srinivasan, Daniall Masood, John L Slunecka, Collin J Noldner, Alex D Hanson, Taylor Kruisselbrink, Xuejun Wang, Yiyang Wang, Jun Yin, Khosrow Rezvani
Overexpression of oncoproteins is a major cause of treatment failure using current chemotherapeutic drugs. Drug-induced degradation of oncoproteins is feasible and can improve clinical outcomes in diverse types of cancers. Mortalin-2 (mot-2) is a dominant oncoprotein in several tumors, including colorectal cancer (CRC). In addition to inactivating the p53 tumor suppressor protein, mot-2 enhances tumor cell invasion and migration. Thus, mot-2 is considered a potential therapeutic target in several cancer types...
August 14, 2018: Molecular Oncology
Tandrima Mitra, Arabinda Mahanty, Satabdi Ganguly, Gopal Krishna Purohit, Sasmita Mohanty, Pranaya Kumar Parida, Prajna Ritambhara Behera, Rohan Kumar Raman, Bimal Prasanna Mohanty
River pollution is one of the principal environmental concerns and biomonitoring tools can play an important role in pollution assessment in the riverine environment. Heat shock proteins (Hsps) have been found to be suitable tools for monitoring stress response. In the present study, expression analyses of hsp genes (hsp27, hsp47, hsp60, hsp70, hsc70, and hsp90) and selected hsp-regulatory genes (hsf1, hyou1, ask1, jnk) were carried out by RT-qPCR in catfish Rita rita collected from selected stretches of river Ganga to investigate changes in their expression patterns as biomarker response...
July 23, 2018: Chemosphere
Jinqiang Huang, Yongjuan Li, Zhe Liu, Yujun Kang, Jianfu Wang
Rainbow trout (Oncorhynchus mykiss) are widely cultured throughout the word for commercial aquaculture. However, as a cold-water species, rainbow trout are highly susceptible to heat stress, which may cause pathological signs or diseases by alleviating the immune roles and then lead to mass mortality. Understanding the molecular mechanisms that occur in the rainbow trout in response to heat stress will be useful to decrease heat stress-related morbidity and mortality in trout aquaculture. In the present study, we conducted transcriptome analysis of head kidney tissue in rainbow trout under heat-stress (24 °C) and control (18 °C) conditions, to identify heat stress-induced genes and pathways...
August 2, 2018: Fish & Shellfish Immunology
Sanofar Abdeen, Trent Kunkle, Nilshad Salim, Anne-Marie Ray, Najiba Mammadova, Corey Summers, Mckayla Stevens, Andrew Ambrose, Yangshin Park, Peter G Schultz, Arthur L Horwich, Quyen Hoang, Eli Chapman, Steven M Johnson
Extending from a study we recently published examining the anti-trypanosomal effects of a series of GroEL/ES inhibitors based on a pseudo-symmetrical bis-sulfonamido-2-phenylbenzoxazole scaffold, here, we report the antibiotic effects of asymmetric analogs of this scaffold against a panel of bacteria known as the ESKAPE pathogens ( Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species). While GroEL/ES inhibitors were largely ineffective against K...
July 30, 2018: Journal of Medicinal Chemistry
Samin Seddigh
Heat shock proteins (HSPs) are found in all living organisms, from bacteria to humans and are expressed under stress. In this study, characterization of two families of HSP including HSP60 and HSP70 protein was compared in different insect species from different orders. According to the conserved motifs analysis, none of the motifs were shared by all insects of two protein families but each family had their own common motifs. Functional and structural analyses were carried out on seven different insect species from each protein family as the representative samples...
July 27, 2018: Journal of Biomolecular Structure & Dynamics
C Mekadim, J Killer, J Mrázek, V Bunešová, R Pechar, Z Hroncová, E Vlková
Detailed differentiation, classification, and phylogenetic analysis of the order Lactobacillales are performed using molecular techniques that involve the comparison of whole genomes, multilocus sequence analysis, DNA-DNA hybridisation, and 16S rRNA sequencing. Despite the wide application of the latter two techniques, issues associated with them are extensively discussed. Although complete genomic analyses are the most appropriate for phylogenetic studies, they are time-consuming and require high levels of expertise...
July 23, 2018: Archives of Microbiology
Taniya Kaewarpai, Visith Thongboonkerd
Secretory products from infiltrating macrophages have been thought to play crucial roles in development and progression of diabetic complications in various tissues/organs. Nevertheless, diabetes-induced changes in macrophage secretory products remained largely unknown. We thus analyzed high-glucose (HG)-induced changes in secretome of human macrophages derived from U937 human monocytic cell line after phorbol 12-myristate 13-acetate (PMA) activation. Serum-free culture supernatants were collected from macrophages exposed to 5...
July 18, 2018: Molecular and Cellular Biochemistry
Thiruvelselvan Ponnusamy, Srikanth K Venkatachala, Manjunatha Ramanjappa, Vijay V Kakkar, Lakshmi A Mundkur
Objective: Atherosclerosis is an autoimmune condition and the underlying cause of coronary artery disease (CAD). Circulating antibodies to self-antigens can have a pathogenic or protective function in atherosclerosis. The objective of the study was to understand the association of autoantibody levels with CAD and its correlation with circulating immune cells. Methods: We assessed antigen concentration and antibodies to apolipoprotein B (ApoB) and heat shock protein (HSP)60 by ELISA in 252 acute coronary syndromes (ACS), 112 patients with stable angina (SA) and 203 healthy controls from Indian population...
2018: Heart Asia
Karin Brydsø Dammark, Anne-Laure Ferchaud, Michael M Hansen, Jesper G Sørensen
Ectothermic animals like fishes are extremely dependent on temperature, as they are not able to change body temperature physiologically. When populations are found in isolated water bodies such as small lakes they will have to respond to stressful high temperatures by behavioral avoidance, phenotypic plasticity or microevolutionary change. We analyzed threespine sticklebacks from two large and two small lakes, representing different isolated populations. We determined maximum critical thermal limits (CTmax) and the associated gene expression responses in three heat shock (hsp60, hsp70, hsp90) and two key metabolic (idh2, fbp2) genes at ecologically relevant moderate heat stress (26 °C) as well as at the critical thermal limit (CTmax)...
July 2018: Journal of Thermal Biology
Racha Beyrouthy, Marion Barets, Elodie Marion, Cédric Dananché, Olivier Dauwalder, Frédéric Robin, Lauraine Gauthier, Agnès Jousset, Laurent Dortet, François Guérin, Thomas Bénet, Pierre Cassier, Philippe Vanhems, Richard Bonnet
We investigated unusual carbapenemase-producing Enterobacter cloacae complex isolates (n = 8) in the novel sequence type (ST) 873, which caused nosocomial infections in 2 hospitals in France. Whole-genome sequence typing showed the 1-year persistence of the epidemic strain, which harbored a blaVIM-4 ST1-IncHI2 plasmid, in 1 health institution and 2 closely related strains harboring blaCTX-M-15 in the other. These isolates formed a new subgroup in the E. hormaechei metacluster, according to their hsp60 sequences and phylogenomic analysis...
August 2018: Emerging Infectious Diseases
Zhong-Yuan Li, Jing Lu, Nian-Zhang Zhang, Jia Chen, Xing-Quan Zhu
Toxoplasma gondii can infect all the vertebrates including human, and leads to serious toxoplasmosis and considerable veterinary problems. T. gondii heat shock protein 60 (HSP60) is associated with the activation of antigen presenting cells by inducing initial immune responses and releasing inflammatory cytokines. It might be a potential DNA vaccine candidate for this parasite. A pVAX-HSP60 DNA vaccine was constructed and immune responses was evaluated in Kunming mice in this study. Our data indicated that the innate and adaptive immune responses was elicited by successive immunizations with pVAX-HSP60 DNA, showing apparent increases of CD3e+CD4+ and CD3e+CD8a+ T cells in spleen tissues of the HSP60 DNA-immunized mice (24...
June 2018: Korean Journal of Parasitology
Shahnawaz Kumbhar, Alam Z Khan, Fahmida Parveen, Zaheer A Nizamani, Farman A Siyal, Mohamed E Abd El-Hack, Fang Gan, Yunhuan Liu, Muhammad Hamid, Sonia A Nido, Kehe Huang
The study was carried out to investigate the effect of dietary selenium (Se) and vitamin E (VE) supplementation on mRNA level of heat shock proteins, selenoproteins, and antioxidant enzyme activities in the breast meat of broilers under summer heat stress conditions. A total of 200 male broilers (Ross 308) of 1 day age were randomly separated into 4 groups in a complete randomized design and were given a basal diet (Control, 0.08 mg Se/kg diet) or basal diet supplemented with VE (250 mg/kg VE), sodium selenite (0...
July 10, 2018: AMB Express
Linshan Yang, Bo Wang, Qingqing Zhou, Yiru Wang, Xingguang Liu, Zhongmin Liu, Zhenzhen Zhan
The excessive inflammation triggered by damage-associated molecular patterns (DAMPs) after myocardial infarction (MI) is responsible for the development of cardiac dysfunction and adverse remodeling, while the mechanisms by which inflammation is fine tuned remain to be fully elucidated. MicroRNA-21 (miR-21) has been shown to function in cardiovascular diseases, while its role in inflammatory responses and cardiac function post MI in mice remains unknown. Here, we found that miR-21 expression was markedly increased in border and infarct areas of cardiac tissues during the early inflammatory phase of MI model established by ligating the left-anterior descending coronary artery...
July 10, 2018: Cell Death & Disease
Eric J Verbeke, Anna L Mallam, Kevin Drew, Edward M Marcotte, David W Taylor
Multi-protein complexes are necessary for nearly all cellular processes, and understanding their structure is required for elucidating their function. Current high-resolution strategies in structural biology are effective but lag behind other fields (e.g., genomics and proteomics) due to their reliance on purified samples rather than heterogeneous mixtures. Here, we present a method combining single-particle analysis by electron microscopy with protein identification by mass spectrometry to structurally characterize macromolecular complexes from human cell extract...
July 3, 2018: Cell Reports
Cheng-Wei Wu, Shannon N Tessier, Kenneth B Storey
Freeze tolerance is an adaptive response utilized by the wood frog Rana sylvatica to endure the sub-zero temperatures of winter. Survival of whole body freezing requires wood frogs to trigger cryoprotective mechanisms to deal with potential injuries associated with conversion of 65-70% of total body water into ice, including multiple consequences of ice formation such as cessation of blood flow and cell dehydration caused by water loss into ice masses. To understand how wood frogs defend against these stressors, we measured the expression of proteins known to be involved in the antioxidant defense and protein chaperone stress responses in brain and heart of wood frogs comparing freezing, anoxia, and dehydration stress...
June 27, 2018: Cell Stress & Chaperones
A S Justo-Junior, L M Villarejos, X T V Lima, W Nadruz, A C Sposito, R L Mamoni, R Abdalla, J L Fernandes, R T D Oliveira, M H S L Blotta
BACKGROUND AND AIMS: Macrophages derived from monocytes play an important role in atherosclerosis progression. Subpopulations of circulating classical, intermediate, and non-classical monocytes possess distinct functions and phenotypes, and participate in the pathogenesis of disease. The aim of this study was to compare the quantity and phenotypes of circulating monocyte subpopulations in patients with established atherosclerosis and healthy control individuals. Additionally, the study aimed to provide insight into the functional activity of monocytes against a heat shock protein (HSP60)...
June 20, 2018: Cytokine
M B Al-Zghoul
This study investigated the effects of thermal manipulation (TM) during embryonic days 12 to 18 on the cloacal temperature (Tc) and the kinetics of muscle mRNA levels of heat shock proteins 70 and 60 (Hsp70 and Hsp60) and heat shock factors 3 and 4 (HSF3 and HSF4) during the first week of life and during thermal stress (TS). One thousand five hundred fertile chicken eggs were randomly divided into 5 groups: control group (37.8°C), TM1 (38.5°C for 18 h), TM2 (39°C for 18 h), TM3 (39.5°C for 18 h), and TM4 (40°C for 18 h)...
June 15, 2018: Poultry Science
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