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https://www.readbyqxmd.com/read/29306662/ciguatoxins-activate-the-calcineurin-signalling-pathway-in-yeasts-potential-for-development-of-an-alternative-detection-tool
#1
Hélène Martin-Yken, Camille Gironde, Sylvain Derick, Hélène Taiana Darius, Christophe Furger, Dominique Laurent, Mireille Chinain
Ciguatoxins (CTXs) are lipid-soluble polyether compounds produced by dinoflagellates from the genus Gambierdiscus spp. typically found in tropical and subtropical zones. This endemic area is however rapidly expanding due to environmental perturbations, and both toxic Gambierdiscus spp. and ciguatoxic fishes have been recently identified in the North Atlantic Ocean (Madeira and Canary islands) and Mediterranean Sea. Ciguatoxins bind to Voltage Gated Sodium Channels on the membranes of sensory neurons, causing Ciguatera Fish Poisoning (CFP) in humans, a disease characterized by a complex array of gastrointestinal, neurological, neuropsychological, and cardiovascular symptoms...
January 4, 2018: Environmental Research
https://www.readbyqxmd.com/read/29306395/application-of-solid-phase-adsorption-toxin-tracking-spatt-devices-for-the-field-detection-of-gambierdiscus-toxins
#2
Mélanie Roué, Hélène Taiana Darius, Jérôme Viallon, André Ung, Clémence Gatti, D Tim Harwood, Mireille Chinain
Ciguatera fish poisoning is a food-borne illness caused by the consumption of seafood contaminated with ciguatoxins (CTXs) produced by dinoflagellates in the Gambierdiscus genus. Since most surveillance programs currently rely on the survey of Gambierdiscus cell densities and species composition, supplementary toxin-based methods allowing the time- and spatially integrated sampling of toxins in ciguateric environments are needed for a more reliable assessment and management of the risks associated with Gambierdiscus proliferation...
January 2018: Harmful Algae
https://www.readbyqxmd.com/read/29304476/human-health-risks-and-socio-economic-perspectives-of-arsenic-exposure-in-bangladesh-a-scoping-review
#3
REVIEW
M Azizur Rahman, A Rahman, M Zaved Kaiser Khan, Andre M N Renzaho
Arsenic contamination of drinking water, which can occur naturally or because of human activities such as mining, is the single most important public health issue in Bangladesh. Fifty out of the 64 districts in the country have arsenic concentration of groundwater exceeding 50µgL-1, the Bangladeshi threshold, affecting 35-77 million people or 21-48% of the total population. Chronic arsenic exposure through drinking water and other dietary sources is an important public health issue worldwide affecting hundreds of millions of people...
January 2, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29301344/computational-modeling-of-the-staphylococcal-enterotoxins-and-its-interaction-with-natural-antitoxin-compounds
#4
Mahantesh Kurjogi, Praveen Satapute, Sudisha Jogaiah, Mostafa Abdelrahman, Jayasimha Rayalu Daddam, Venkatesh Ramu, Lam-Son Phan Tran
Staphylococcus aureus is an opportunistic bacterium that produces various types of toxins, resulting in serious food poisoning. Staphylococcal enterotoxins (SEs) are heat-stable and resistant to hydrolysis by digestive enzymes, representing a potential hazard for consumers worldwide. In the present study, we used amino-acid sequences encoding SEA and SEB-like to identify their respective template structure and build the three-dimensional (3-D) models using homology modeling method. Two natural compounds, Betulin and 28-Norolean-12-en-3-one, were selected for docking study on the basis of the criteria that they satisfied the Lipinski's Rule-of-Five...
January 3, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29294579/-field-epidemiological-investigation-on-a-foodborne-outbreak-caused-by-staphylococcus-aureus-enterotoxin-in-hangzhou-2014
#5
L M Huang, L X Hu, H Yu, S C Chen, C P Huang, H Liu
Objective: To identify the cause on a foodborne breakout in a university of Hangzhou in 2014. Methods: Data on cases were gathered from the out-patient logs of the university affiliated or neighboring hospitals to describe the disease distribution and epidemiological curves. Case-control and field studies on hazard factors were conducted simultaneously. Results: The incubation period was 1.5-5.0 hours, of which the median was 3 during the outbreak. All the cases consumed food from a restaurant called Chen's Snacks nearby their university and suffered from the Staphylococcus aureus enterotoxin...
December 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/29289340/a-sensitive-assay-based-on-specific-aptamer-binding-for-the-detection-of-salmonella-enterica-serovar-typhimurium-in-milk-samples-by-microchip-capillary-electrophoresis
#6
Yan Zhang, Feifei Luo, Yating Zhang, Luqi Zhu, Yi Li, Shuangli Zhao, Pingang He, Qingjiang Wang
The detection of Salmonella enterica serovar Typhimurium (S. Typhimurium) is very important for the prevention of food poisoning and other infectious diseases. Here we reported a simple and sensitive strategy to test S. Typhimurium by microchip capillary electrophoresis couple with laser-induced fluorescence (MCE-LIF) based on the specific reaction between the bacterium and corresponding aptamers. Based on the differences in charge to mass ratio between bacteria-aptamer complexes and free aptamers, a separation of the complexes and free aptamers could be obtained by MCE...
December 23, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29282610/trends-of-foodborne-diseases-in-china-lessons-from-laboratory-based-surveillance-since-2011
#7
REVIEW
Jikai Liu, Li Bai, Weiwei Li, Haihong Han, Ping Fu, Xiaochen Ma, Zhenwang Bi, Xiaorong Yang, Xiuli Zhang, Shiqi Zhen, Xiaoling Deng, Xiumei Liu, Yunchang Guo
Foodborne disease is one of the most important public health issues worldwide. China faces various and unprecedented challenges in all aspects of the food chain. Data from laboratory-based foodborne disease surveillance systems from 2013 to 2016, as well as different regions and ages, can be found along with differences in the patterns of pathogens detected with diverse characteristics. Vibrio parahaemolyticus has been the leading cause of infectious diarrhea in China, especially among adults in coastal regions...
December 27, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/29278755/molecular-characterization-and-phylogenetic-analysis-of-clostridium-perfringens-from-animals-and-their-environments-by-cpn60-ut-sequencing-analysis
#8
Shreya Das, Saugata Majumder, Chetna Mathur, Joseph Kingston J
Clostridium perfringens an ubiquitous environmental bacterium causes major food borne illnesses, digestive diseases and several soft tissue infections in humans and animals. In the present study, toxin typing of 91 C. perfringens isolates from animals with enteric diseases and their environments revealed the presence of type A and C strains. Enterotoxin gene (cpe), responsible for majority of the food poisoning incidences in humans and enteric infections in animals was present in 60.43% of the isolates of which 61...
December 23, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29274481/growth-no-growth-boundary-of-clostridium-perfringens-from-spores-in-cooked-meat-a-logistic-analysis
#9
Lihan Huang, Changcheng Li, Cheng-An Hwang
Clostridium perfringens is a major foodborne health hazard that can cause acute gastroenteritis in consumers, and is often associated with cooked meat and poultry products. Improper cooling after cooking may allow this pathogen to grow in a product, producing an enterotoxin that causes food poisoning. This study was conducted to evaluate the effect of common ingredients, including sodium tripolyphosphate (STPP), sodium lactate (NaL), and sodium chloride (NaCl), on the germination and outgrowth of C. perfringens spores in meat products...
December 16, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29262293/verification-and-large-scale-clinical-evaluation-of-a-national-standard-protocol-for-salmonella-spp-shigella-spp-screening-using-real-time-pcr-combined-with-guided-culture
#10
Xi-Jun Tang, Ze Yang, Xin-Bin Chen, Wen-Fang Tian, Cheng-Ning Tu, Hai-Bo Wang
Salmonella spp./Shigella spp. are often associated with food poisoning and fecal-oral transmission of acute gastroenteritis that requires strict monitoring, especially among people who would handle food and water. In 2014, the National Health and Family Planning Commission of the P. R. China issued a national standard protocol (recommendatory) for the screening of Salmonella spp./Shigella spp.. However, its performance has not been fully studied. Whether it was suitable for use in our laboratory was still unknown...
December 17, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/29261162/food-borne-outbreak-investigation-and-molecular-typing-high-diversity-of-staphylococcus-aureus-strains-and-importance-of-toxin-detection
#11
Sarah Denayer, Laurence Delbrassinne, Yacine Nia, Nadine Botteldoorn
Staphylococcus aureus is an important aetiological agent of food intoxications in the European Union as it can cause gastro-enteritis through the production of various staphylococcal enterotoxins (SEs) in foods. Reported enterotoxin dose levels causing food-borne illness are scarce and varying. Three food poisoning outbreaks due to enterotoxin-producing S. aureus strains which occurred in 2013 in Belgium are described. The outbreaks occurred in an elderly home, at a barbecue event and in a kindergarten and involved 28, 18, and six cases, respectively...
December 20, 2017: Toxins
https://www.readbyqxmd.com/read/29260903/antibiotic-resistance-profiling-analysis-of-virulence-aspects-and-molecular-genotyping-of-staphylococcus-aureus-isolated-in-sicily-italy
#12
Maria Vitale, Salvatore Gaglio, Paola Galluzzo, Giuseppe Cascone, Chiara Piraino, Vincenzo Di Marco Lo Presti, Rosa Alduina
Staphylococcus aureus is the major cause of foodborne diseases worldwide. In this retrospective study, 84 S. aureus strains were characterized. The collection comprises 78 strains isolated during 1998 and 2014 from dairy products and tissue samples from livestock bred for dairy production in Sicily. One isolate was obtained from a pet (dog), one from an exotic animal (a circus elephant), and four human isolates were obtained during a severe food poisoning outbreak that occurred in Sicily in 2015. All the strains were characterized by pulsed-field gel electrophoresis (PFGE), for antibiotic resistance and presence of toxin genes...
December 20, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29259829/antibacterial-activity-of-free-fatty-acids-from-hydrolyzed-virgin-coconut-oil-using-lipase-from-candida-rugosa
#13
Van Thi Ai Nguyen, Truong Dang Le, Hoa Ngoc Phan, Lam Bich Tran
Free fatty acids (FFAs) were obtained from hydrolyzed virgin coconut oil (VCO) by Candida rugosa lipase (CRL). Four factors' influence on hydrolysis degree (HD) was examined. The best hydrolysis conditions in order to get the highest HD value were determined at VCO to buffer ratio 1 : 5 (w/w), CRL concentration 1.5% (w/w oil), pH 7, and temperature 40°C. After 16 hours' reaction, the HD value achieved 79.64%. FFAs and residual hydrolyzed virgin coconut oil (HVCO) were isolated from the hydrolysis products...
2017: Journal of Lipids
https://www.readbyqxmd.com/read/29258287/a-dna-barcode-based-rpa-assay-bar-rpa-for-rapid-identification-of-the-dry-root-of-ficus-hirta-wuzhimaotao
#14
Enwei Tian, Qianqian Liu, Haoting Ye, Fang Li, Zhi Chao
Background: Wuzhimaotao (the dry root of Ficus hirta) is used as both medicine and food ingredient by the locals in areas around Nanling Mountains of China. Due to its very similar external morphologies with Duanchangcao (the root of Gelsemium elegans, which contains gelsemine that is extremely neurotoxic) and the associated growth of these two plants, incidents of food poisoning and even death frequently occur, resulting from the misuse of Duanchangcao as Wuzhimaotao. The aim of this study is to develop a fast, even, on-spot approach to identification of Wuzhimaotao...
December 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29244757/expression-of-staphylococcal-enterotoxins-under-stress-encountered-during-food-production-and-preservation
#15
REVIEW
Jenny Schelin, Yusak Budi Susilo, Sophia Johler
Staphylococcal food poisoning (SFP) is the most prevalent cause of food-borne intoxications worldwide. Consumption of enterotoxins preformed in food causes violent vomiting and can be fatal in children and the elderly. While being repressed by competing bacteria in most matrices, Staphylococcus aureus benefits from crucial competitive advantages in foods with high osmolarity or low pH. During recent years, the long-standing belief in the feasibility of assessing SFP risk based on colony-forming units of S. aureus present in food products has been disproven...
December 15, 2017: Toxins
https://www.readbyqxmd.com/read/29234667/a-matter-of-taste-lineage-specific-loss-of-function-of-taste-receptor-genes-in-vertebrates
#16
REVIEW
Marco Antinucci, Davide Risso
Vertebrates can perceive at least five different taste qualities, each of which is thought to have a specific role in the evolution of different species. The avoidance of potentially poisonous foods, which are generally bitter or sour tasting, and the search for more nutritious ones, those with high-fat and high-sugar content, are two of the most well-known examples. The study of taste genes encoding receptors that recognize ligands triggering taste sensations has helped to reconstruct several evolutionary adaptations to dietary changes...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/29203541/nani-sialidase-can-support-the-growth-and-survival-of-clostridium-perfringens-strain-f4969-using-sialyated-host-macromolecules-mucin-or-caco-2-cells
#17
Jihong Li, Bruce A McClane
Enterotoxin-producing Clostridium perfringens type A strains cause human gastrointestinal (GI) infections, including a very common food poisoning and 5-10% of all antibiotic-associated diarrhea cases. This bacterium can utilize free sialic acid for growth but most sialic acids in the GI tract are sequestered on macromolecules such as the mucin proteins of mucus or glycoconjugates in host cells. However, many C. perfringens strains produce sialidases that might promote growth and survival by generating free sialic acid from those sialyated host macromolecules or by exposing underlying carbohydrates or proteins for digestion by other enzymes...
December 4, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/29202339/heat-denatured-lysozyme-could-be-a-novel-disinfectant-for-reducing-hepatitis-a-virus-and-murine-norovirus-on-berry-fruit
#18
Michiko Takahashi, Yumiko Okakura, Hajime Takahashi, Minami Imamura, Akira Takeuchi, Hiroyuki Shidara, Takashi Kuda, Bon Kimura
Hepatitis A virus (HAV) is well known worldwide as a causative virus of acute hepatitis. In recent years, numerous cases of HAV infection caused by HAV-contaminated berries have occurred around the world. Because berries are often consumed without prior heating, reliable disinfection of the raw fruit is important in order to prevent HAV outbreaks. Previous studies have found that murine norovirus strain 1 (MNV-1) and human norovirus GII.4 were inactivated in heat-denatured lysozyme solution. In this study, we investigated whether or not heat-denatured lysozyme is effective in inactivating HAV and whether it could be an effective disinfectant for berries contaminated with HAV or MNV-1...
November 24, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29201151/complete-genome-sequences-of-clostridium-perfringens-del1-strain-isolated-from-chickens-affected-by-necrotic-enteritis
#19
Charles Li, Xianghe Yan, Hyun S Lillehoj
Background: Clostridium perfringens is ubiquitous in nature. It is a normal inhabitant in the intestinal tract of animals and humans. As the primary etiological agent of gas gangrene, necrosis and bacteremia, C. perfringens causes food poisoning, necrotic enteritis (NE), and even death. Epidemiology research has indicated that the increasing incidence of NE in poultry is associated with the withdrawal of in-feed antibiotic growth promoters in poultry production in response to government regulations...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29200758/effect-of-different-cooking-methods-on-histamine-levels-in-selected-foods
#20
Bo Young Chung, Sook Young Park, Yun Sun Byun, Jee Hee Son, Yong Won Choi, Yong Se Cho, Hye One Kim, Chun Wook Park
Background: Histamine in food is known to cause food poisoning and allergic reactions. We usually ingest histamine in cooked food, but there are few studies about the influence of cooking method on the histamine level. Objective: The purpose of this study was to determine the influence of cooking methods on the concentration of histamine in foods. Methods: The foods chosen were those kinds consumed frequently and cooked by grilling, boiling, and frying...
December 2017: Annals of Dermatology
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