Fulminant Clostridioides (Costridium) difficile infection caused by a rare strain of PCR-ribotype 153 in Japan: A case report.

Clostridioides (Clostridium) difficile (C. difficile) infection (CDI), often severe when producing toxin A, toxin B, and CDT, can cause life-threatening fulminant infections, especially in vulnerable patients. This case report discusses a 39-year-old woman with no medical history who developed severe CDI after antibiotic treatment, leading to fatal hypovolemic shock.

Standardization of the Japanese National Standard, Equine Botulinum Antitoxin Type A, and Factors Affecting Standardization.

Equine botulinum antitoxin is one of the most popular countermeasures for human botulism. The unitage of the antitoxin product is defined according to national minimum requirement or pharmacopoeia in each country by referring to national standard antitoxins for four types (A, B, E, and F). With the expected depletion of the national standard antitoxins, replacement national standard antitoxins are produced and standardized through collaboration of the National Control Laboratory and other participants, including manufacturer(s).

Clostridioides difficile infection in thoroughbred horses in Japan from 2010 to 2021.

We encountered 34 Clostridioides difficile (C. difficile) infection (CDI) cases among Thoroughbred horses in Japan from 2010 to 2021. Among them, 79.

Clinical Characteristics of Corynebacterium ulcerans Infection, Japan.

Corynebacterium ulcerans is a closely related bacterium to the diphtheria bacterium C. diphtheriae, and some C. ulcerans strains produce toxins that are similar to diphtheria toxin.

An ELISA system for tetanus toxoid potency tests: An alternative to lethal challenge.

For a long time, a widely used method for tetanus toxoid (Ttd) potency has been the challenge test, in which animals are immunized and then challenged with tetanus toxin in lethal or non-lethal way. In the context of animal welfare, an alternative is desired because the method causes unsustainable distress to animals. We aimed to replace the system for describing test results, in which scores are assigned to symptoms exhibited by challenged animals, with scores assigned to antibody ELISA titers in immunized mouse sera.

Gene expression analysis during the conversion from a viable but nonculturable to culturable state in Vibrio cholerae.

We previously reported that Vibrio cholerae in a viable but non-culturable (VBNC) state can be converted to a culturable state by treatment with catalase. This finding enabled us to develop an assay system to observe the time course of the conversion from VBNC to culturable in V. cholerae.

Seroepidemiology and Carriage of Diphtheria in Epidemic-Prone Area and Implications for Vaccination Policy, Vietnam.

In 2019, a community-based, cross-sectional carriage survey and a seroprevalence survey of 1,216 persons 1-55 years of age were conducted in rural Vietnam to investigate the mechanism of diphtheria outbreaks. Seroprevalence was further compared with that of an urban area that had no cases reported for the past decade. Carriage prevalence was 1.

First report of foodborne botulism due to Clostridium botulinum type A(B) from vegetarian home-canned pate in Hanoi, Vietnam.

Even one case of foodborne botulism constitutes a public health emergency. We report a series of cases with delayed treatment due to delayed diagnosis. Clostridium botulinum type A(B) was isolated from vegetarian home-canned pate, but not from stool samples.

Molecular epidemiology of endemic Clostridioides difficile infection in Japan.

We reviewed the molecular epidemiology of Clostridioides difficile infection (CDI) in Japan by reviewing articles in which typing analysis was performed on recovered C. difficile isolates. Most of the multicenter studies showed that the major prevalent PCR-ribotypes (RT018-related type, RT014, RT002, RT369, and RT017) accounted for more than 75% of clinical isolates in Japan, which has not changed significantly since the late 1990s.

Induction and Resuscitation of Viable but Nonculturable .

Many pathogenic bacteria, including and , can become viable but nonculturable (VBNC) following exposure to specific stress conditions. , a known human pathogen causing diphtheria, has not previously been shown to enter the VBNC state. Here, we report that can become VBNC when exposed to low temperatures.

Surface Layer Protein A Expressed in DJNS06-36 Possesses an Encephalitogenic Mimotope of Myelin Basic Protein.

Multiple sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system (CNS). Recent studies suggest that migration of Th1 and Th17 cells specific for enteric bacteria from the gut to the CNS may lead to the initiation and/or exacerbation of autoimmune diseases including MS. Human leukocyte antigen (HLA)-DR15 is an MHC class II (MHCII) haplotype highly associated with the development of MS that contains the two HLA-DRB* genes, DRB1*1501 (DR2b) and DRB5*0101 (DR2a).

Fatal fulminant Clostridioides difficile colitis caused by Helicobacter pylori eradication therapy; a case report.

A 74-year-old male was referred to our critical care department for refractory severe watery diarrhea with advanced leukocytosis (over 70,000/μl) after multiple administrations of eradication therapy against Helicobacter pylori (HP). He was diagnosed as having fulminant colitis due to Clostridioides difficile after antimicrobial eradication therapy. He was given intravenous metronidazole and oral vancomycin.

Risk factors for Clostridioides difficile infection in hospitalized patients and associated mortality in Japan: a multi-centre prospective cohort study.

Background: Although population characteristics and antimicrobial prescribing practices suggest that the hospitalized population in Japan is at high risk of Clostridioides difficile infection (CDI), the epidemiology of CDI in Japan is poorly understood.

Aim: This prospective cohort study aimed to investigate the epidemiology of CDI at 12 hospitals in Japan.

Methods: Patients with clinically significant diarrhoea (CSD) were enrolled.

Successful intravenous administration of argatroban in the management of heparin-resistant and surgery-resistant mesenteric vein thrombosis.

A 78-year-old woman visited the emergency department with complaints of progressively worsening abdominal pain for a week. Nausea and vomiting started at the time of the visit. An abdominal contrast-enhanced CT (CECT) revealed a filling defect of portal vein, splenic vein and superior mesenteric vein (SMV) which was diagnosed as portal vein and mesenteric venous thrombosis (MVT).

Clostridioides (Clostridium) difficile infection burden in Japan: A multicenter prospective study.

Clostridioides (Clostridium) difficile is the leading cause of healthcare-associated infectious diarrhea in the developed world. Retrospective studies have shown a lower incidence of C. difficile infection (CDI) in Japan than in Europe or North America.

Development of vaccine for Clostridium difficile infection using membrane fraction of nontoxigenic Clostridium difficile.

Although standard antibiotic therapy is performed for diarrhea and pseudomembranous colitis caused by Clostridium difficile, a high recurrence rate of C. difficile infection (CDI) remains a major problem. We previously showed that a membrane fraction of nontoxigenic C.

Tetanus in a partially immunized child.

A 13-year-old boy developed tetanus, although he had protective antitoxin antibody raised by three doses of tetanus toxoid vaccine. Four days after injury, he presented with muscle rigidity of his posterior neck, excessive diaphoresis, and risus sardonicus and was subsequently diagnosed with tetanus. Tetanus is rare in developed countries, particularly during childhood, but must be promptly diagnosed based on clinical symptoms.

Fecal microbiota transplantation for recurrent infection in a patient with ulcerative colitis.

Fecal microbiota transplantation (FMT) has been reported as a safe and effective therapy in patients with refractory and recurrent infection (CDI). FMT has also been reported as a promising therapy in patients with ulcerative colitis (UC). Both, CDI and UC, are believed to be caused by dysbiosis, such as altered compositions or decreased diversity of the intestinal microbiota.

[Infectious diseases in Asia/International collaboration in bacterial infectious diseases].

Proactive approaches to collect precise information are necessary to control infectious diseases in the whole world. A collaborative research for infectious diseases with institute or university of countries that infectious diseases occur is one of the good approaches. In this paper, we introduce collaborative researches on infectious diseases with Asian countries, such as Vietnam, Philippines, Thailand, and India.

A factor converting viable but nonculturable Vibrio cholerae to a culturable state in eukaryotic cells is a human catalase.

In our previous work, we demonstrated that viable but nonculturable (VBNC) Vibrio cholerae O1 and O139 were converted to culturable by coculture with eukaryotic cells. Furthermore, we isolated a factor converting VBNC V. cholerae to culturable (FCVC) from a eukaryotic cell line, HT-29.

Inhibition of adhesion of Clostridium difficile to human intestinal cells after treatment with serum and intestinal fluid isolated from mice immunized with nontoxigenic C. difficile membrane fraction.

Diarrhea and pseudomembrane colitis caused by Clostridium difficile infection is a global health concern because of the high recurrence rate after standard antibiotic therapy. Vaccination presents a powerful countermeasure against disease recurrence. In this study, mice vaccinated with the nontoxigenic C.