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Sieve analysis: methods for assessing from vaccine trial data how vaccine efficacy varies with genotypic and phenotypic pathogen variation.

A key component in the evaluation of efficacy of a vaccine to protect against disease caused by an antigenically diverse infectious pathogen in a preventative vaccine trial is assessing how vaccine-induced protection depends on genotypic and phenotypic variations of the exposing pathogen. This assessment is made by comparing pathogen isolates between infected vaccinated subjects and infected unvaccinated subjects. A survey of efficacy trial reports reveals a lack of systematic, quantitative investigation in this question. Analysis tools for testing if vaccine protection against disease is supe

Design and modeling of area-enhanced, bi-porous, evaporative macrochannel for building facade cooling.

PURPOSE: To investigate the roles of activation of macrophages isolated from C3H/HeN and C3H/HeJ mice and stimulated by lipopolysaccharide (LPS), and toll-like receptor 4-mediated signal transduction in the development of acute anterior uveitis. METHODS: Establish animal models with acute anterior uveitis by intraperitoneal injection of vibrio cholera endotoxin into C3H/HeN mice (wild type) and C3H/HeJ mice (toll-like receptor 4 (TLR4) gene defection type). Peritoneal macrophages were obtained from C3H/HeN and C3H/HeJ mice. Immunofluorescence staining was used to identify the F4/80+ positive …

Identification and characterization of four Bacillus species from the intestine of hybrid grouper (Epinephelus fuscoguttatus♀ × E. lanceolatus♂), their antagonistic role on common pathogenic bacteria, and effects on intestinal health.

As an alternative to the criticized antibiotics, probiotics have been adopted for their eco-friendly nature and ability to enhance host grow … played better antimicrobial effects against pathogenic bacteria Streptococcus agalactiae, S. iniae, Vibrio harveyi, and V. alginolyticus. The in vivo biosafety trial involved hybrid grouper fish being grouped into five (average weight 32 ± 0.94 g), namely, the group fed the basal diet void of isolate's supplementation (control), and the remaining four gr …

World Health Organization Estimates of the Relative Contributions of Food to the Burden of Disease Due to Selected Foodborne Hazards: A Structured Expert Elicitation.

BACKGROUND: The Foodborne Disease Burden Epidemiology Reference Group (FERG) was established in 2007 by the World Health Organization (WHO) … ansmission (e.g. Shigella spp. and Norovirus) or waterborne transmission (e.g. Salmonella Typhi and Vibrio cholerae) were judged to dominate. For many pathogens, the foodborne route was assessed relatively more important in developed subregions than in developing subregions. The main exposure routes for lead varied across subregions, with the foodborne r …

Cholera outbreaks in Africa.

During the current seventh cholera pandemic, Africa bore the major brunt of global disease burden. More than 40 years after its resurgence i … d organism characteristics, the likelihood of people coming into contact with an infectious dose of Vibrio cholerae and on the virulence of the implicated strain. Cholera transmission can then be amplified by several factors including contamination of human water- or food sources; climate and extreme weather events; political and economic crises; high po …

SPIROCHAETA MORSUS MURIS, N.SP., THE CAUSE OF RAT-BITE FEVER : SECOND PAPER.

1. Since our first report on the discovery of the cause of rat-bite fever, we have been able to prove the existence of the same spirochete i … too, take Giemsa's stain. 6. The movements of our spirochetes are very rapid, resembling those of a vibrio, and distinguish them from all other kinds of spirochetes. When, however, the movements become a little sluggish, they begin to present movements characteristic of ordinary spirochetes. 7. For experimental purposes, mice, house rats, white rats, and …

Effect of probiotic Bacillus cereus PKA18 on the overall growth, gut microbiome, and immunity in Clarias magur (Hamilton, 1822).

The current study evaluated the probiotic potential of Bacillus cereus PKA18, isolated from indigenous Clarias batrachus, as a dietary suppl … ocessing pathways despite lower overall functional abundance. Following a pathogenic challenge with Vibrio vulnificus (MTCC 1145), fish in the control and C2 groups were assessed for immune response. Fish fed C2 have demonstrated enhanced activity of respiratory burst, myeloperoxidase, α2-macroglobulin and antiprotease. Additionally, a significant upregu …

Prevalence of Bacteria and Antimicrobial Resistance Genes in Hospital Water and Surfaces.

Purpose Antimicrobial resistance (AMR) has become a worldwide environmental and public health problem, causing more than 250,000 deaths per … , Klebsiella spp. (13%), Staphylococcus aureus (13%), Pseudomonas spp.(10%), Escherichia coli (9%), Vibrio spp. (8%), Enterococcus spp. (6%), Shigella spp. (6%), Salmonella spp. (4%), Acinetobacter spp. (3%), Staphylococcus epidermitis (3%), Streptococci spp. (2%), Proteus spp. (1%), Citrobacter spp. (1%), and Serratia spp. (1%). A diverse range of micro …

The use of furoxone: a perspective.

Acute infectious diarrhoea is a widespread cause of morbidity and mortality. Some of the major diarrhoeal diseases are cholera, typhoid fever, shigellosis (bacillary dysentery), salmonellosis, "travellers' diarrhoea", and giardiasis These diseases can be avoided with proper education, sanitation, and hygiene. However, the majority of these diseases occur most frequently in areas of the world where political and social upheaval, poverty, overcrowding, and a lack of education prevail. Although vaccines are available for some of the diseases, they are not completely effective. Antimicrobial thera

Accidental Ixazomib Overdose in a Patient With Multiple Myeloma.

Multiple myeloma is the second most common hematological malignancy. Ixazomib is the first oral proteasome inhibitor approved in the United States for the management of multiple myeloma who have received at least one prior treatment. The availability of oral chemotherapeutic agents for the management of multiple myeloma has made it easier for patients who do not have to come to the hospital for chemotherapy infusions. However, many barriers are associated with oral chemotherapy, and one of them is a misinterpretation of instruction which can have deleterious effects. In this case report, we pr

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… Test performed | Polymerase chain reaction result Campylobacter spp | Not detected Clostridium difficile toxin A/B genes | Not detected Plesiomonas shigelloides | Not detected Salmonella spp | Not detected Vibrio spp | Not detected Vibrio cholerae | Not detected Yersinia enterocolotica | Not detected …

Microbial survey of ready-to-eat salad ingredients sold at retail reveals the occurrence and the persistence of Listeria monocytogenes Sequence Types 2 and 87 in pre-packed smoked salmon.

BACKGROUND: As the preparation of salads involves extensive handling and the use of uncooked ingredients, they are particularly vulnerable to microbial contamination. This study aimed to determine the microbial safety and quality of pre-packed salads and salad bar ingredients sold in Singapore, so as to identify public health risks that could arise from consuming salads and to determine areas for improvement in the management of food safety. RESULTS: The most frequently encountered organism in pre-packed salad samples was B. cereus, particularly in pasta salads (33.3%, 10/30). The most common

Efficacy of a single-dose regimen of inactivated whole-cell oral cholera vaccine: results from 2 years of follow-up of a randomised trial.

BACKGROUND: A single-dose regimen of inactivated whole-cell oral cholera vaccine (OCV) is attractive because it reduces logistical challenge … iarrhoea for which the onset was at least 7 days after dosing and a faecal culture was positive for Vibrio cholerae O1 or O139. Passive surveillance for diarrhoea was done in 13 hospitals or major clinics located in or near the study area for 2 years after the last administered dose. We assessed the protective efficacy of the OCV against culture-confirme …

Structure of the hypothetical Mycoplasma protein MPN555 suggests a chaperone function.

The crystal structure of the hypothetical protein MPN555 from Mycoplasma pneumoniae (gi|1673958) has been determined to a resolution of 2.8 Angstrom using anomalous diffraction data at the Se-peak wavelength. Structure determination revealed a mostly alpha-helical protein with a three-lobed shape. The three lobes or fingers delineate a central binding groove and additional grooves between lobes 1 and 3 and between lobes 2 and 3. For one of the molecules in the asymmetric unit, the central binding pocket was filled with a peptide from the uncleaved N-terminal affinity tag. The MPN555 structure

Intranasal administration of a Schistosoma mansoni glutathione S-transferase-cholera toxoid conjugate vaccine evokes antiparasitic and antipathological immunity in mice.

Mucosal administration of Ags linked to cholera toxin B subunit (CTB) can induce both strong mucosal secretory IgA immune responses and peripheral T cell hyporeactivity. In this study, intranasal (i.n. ) administration of CTB-conjugated Schistosoma mansoni 28-kDa GST (CTB-Sm28GST) was found to protect infected animals from schistosomiasis, especially from immunopathological complications associated with chronic inflammation. Worm burden and liver egg counts were reduced in infected animals treated with the CTB-Sm28GST conjugate as compared with mice infected only, or with mice treated with a c

A study of antimicrobial activity, acute toxicity and cytoprotective effect of a polyherbal extract in a rat ethanol-HCl gastric ulcer model.

BACKGROUND: The decoction of the aerial parts of Rhynchosia recinosa (A.Rich.) Bak. [Fabaceae] is used in combination with the stem barks of … y against four Gram negative bacteria; Escherichia coli (ATCC 25922), Salmonella typhi (NCTC 8385), Vibrio cholerae (clinical isolate), and Klebsiella pneumoniae (clinical isolate) using the microdilution method. In addition the extracts were evaluated for brine shrimp toxicity and acute toxicity in mice. Phytochemical tests were done using standard meth …

Epidemiology of foodborne diseases: a worldwide review.

Acute foodborne disease infections and intoxications are much more of a concern to governments and the food industry today than a few decade … re more frequently documented in industrialized than in developing countries. ETEC, EPEC, Shigella, Vibrio cholerae and parasites are the main scourges in developing countries, but it is uncertain how many cases are attributed to food, to water or to person-to-person transmission. The apparent decrease of S. aureus and C. perfringens outbreaks in industr …

Applications of synthetic biology in medical and pharmaceutical fields.

Synthetic biology aims to design or assemble existing bioparts or bio-components for useful bioproperties. During the past decades, progresses have been made to build delicate biocircuits, standardized biological building blocks and to develop various genomic/metabolic engineering tools and approaches. Medical and pharmaceutical demands have also pushed the development of synthetic biology, including integration of heterologous pathways into designer cells to efficiently produce medical agents, enhanced yields of natural products in cell growth media to equal or higher than that of the extract

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… . | Inhibit Vibrio harveyi and Candida albicans | Pre-Clinical | 446 Human liver buds | Self-packaging into a complex organ using three stem cells | iPSCs, endothelial stem cells and mesenchymal stem cells | N.A. | Generation of a functional human organ from pluripotent stem cells | Pre-Clinical | 90 … cholerae and Vibrio parahaemolyticus | E. coli strain NEB10β | Synthetic bile acid sensor TcpP-TcpH for taurocholic acid; synthetic bile acid sensor VtrA-VtrC for taurodeoxycholic acid, driving sfGFP as the reporter | Detection of bile acid concentration in serum | Pre-Clinical | 457 Kill tumor cells …

The positive effect of malaria IPTp-SP on birthweight is mediated by gestational weight gain but modifiable by maternal carriage of enteric pathogens.

BACKGROUND: Poor pregnancy and birth outcomes are common in sub-Saharan Africa and have complex aetiologies. Sulfadoxine-pyrimethamine (SP), … thly stool samples were collected and screened for five Escherichia coli pathotypes, Shigella spp., Vibrio cholerae, Salmonella, Campylobacter coli/jejuni, and three protozoa (Giardia spp., Entameba histolytica, and Cryptosporidium spp.) using previously validated molecular assays. FINDINGS: IPTp-SP vs. IPTP-DP was associated with higher maternal gestat …