Publications by authors named "Hajime Nishiya"

Article Synopsis
  • A nationwide surveillance study on the antimicrobial susceptibility of bacterial respiratory pathogens in Japan was conducted between January 2014 and April 2015 by three medical societies.
  • The study evaluated 1534 bacterial strains obtained from diagnosed adult patients with respiratory infections, focusing on various pathogens like Staphylococcus aureus and Streptococcus pneumoniae.
  • Results indicated high resistance rates, with 43.6% of Staphylococcus aureus being methicillin-resistant and significant percentages of Haemophilus influenzae showing resistance to ampicillin.
View Article and Find Full Text PDF
Article Synopsis
  • A nationwide study in Japan in 2012 focused on monitoring the antibiotic resistance of bacterial pathogens responsible for respiratory infections in adult patients.
  • A total of 1,236 bacterial strains were tested, revealing high resistance rates, including 51.3% methicillin-resistant Staphylococcus aureus and concerning levels of antibiotic resistance in other bacteria like Klebsiella pneumoniae and Pseudomonas aeruginosa.
  • The findings highlight the importance of ongoing surveillance to understand and address the increasing resistance of bacterial respiratory pathogens to antimicrobial treatments.
View Article and Find Full Text PDF

The nationwide surveillance on antimicrobial susceptibility of bacterial respiratory pathogens from patients in Japan, was conducted by Japanese Society of Chemotherapy, Japanese Association for Infectious Diseases and Japanese Society for Clinical Microbiology in 2010. The isolates were collected from clinical specimens obtained from well-diagnosed adult patients with respiratory tract infections during the period from January and April 2010 by three societies. Antimicrobial susceptibility testing was conducted at the central reference laboratory according to the method recommended by Clinical and Laboratory Standard Institutes using maximum 45 antibacterial agents.

View Article and Find Full Text PDF

Abstract. The anti-plasmodial activity of 47 essential oils and 10 of their constituents were screened for in vitro activity against Plasmodium falciparum. Five of these essential oils (sandalwood, caraway, monarda, nutmeg, and Thujopsis dolabrata var.

View Article and Find Full Text PDF

We present here three cases in which morphological changes and/or a decreased number of Streptococcus pneumoniae or Moraxella catarrhalis could be observed in gram-stained sputum obtained just after the first administration of an antimicrobial agent. Case 1 was a 53-year-old man with pneumonia caused by gram-positive diplococcus, identified as S. pneumoniae, who was administered 2 g of ampicillin over a period of 1 h.

View Article and Find Full Text PDF

A 32-year-old man was admitted to our hospital because of fever, headache, and loss of consciousness. Four days before admission, he had had difficulty speaking. On the day of admission, his colleague had found him to be unconscious and lying on his back.

View Article and Find Full Text PDF

In April 2007, seven students belonging to the same class at Teikyo University developed measles. To prevent the spread of infection, 27 of 106 students in the same class who had low anti-measles antibody titers as measured by hemagglutination inhibition (HI) assay were vaccinated. After the outbreak had subsided, the HI values were investigated in 103 students, and they answered questionnaires about their health condition during the period of the outbreak and their previous clinical histories of measles, including vaccination records.

View Article and Find Full Text PDF

For the purpose of nationwide surveillance of the antimicrobial susceptibility of bacterial respiratory pathogens collected from patients in Japan, the Japanese Society of Chemotherapy conducted a third year of nationwide surveillance during the period from January to April 2008. A total of 1,097 strains were collected from clinical specimens obtained from well-diagnosed adult patients with respiratory tract infections. Susceptibility testing was evaluable with 987 strains (189 Staphylococcus aureus, 211 Streptococcus pneumoniae, 6 Streptococcus pyogenes, 187 Haemophilus influenzae, 106 Moraxella catarrhalis, 126 Klebsiella pneumoniae, and 162 Pseudomonas aeruginosa).

View Article and Find Full Text PDF

Gram staining is a useful technique for detecting bacteria but is highly questionable in detecting Mycobacterium tuberculosis. Its detection generally requires special staining, such as Ziehl-Neelsen staining. We experienced three cases in which tuberculosis was first suggested by Gram staining of sputum or pus, confirmed by Ziehl-Neelsen staining, and diagnosed by polymerase chain reaction or culture.

View Article and Find Full Text PDF

The incidence rates of fungemia caused by Candida guilliermondii have been increasing over the past several years. Although still relatively rare (1.3% of all cases of fungemia in Japan), most cases of C.

View Article and Find Full Text PDF

A case of exotic myiasis caused by tumbu fly (Cordylobia anthropophaga) parasitism acquired while travelling in the Republic of Namibia is reported. This is the fifth case reported in Japan, and is very unusual in that the patient was infected with 19 larvae. This is also the first case diagnosed using molecular methods in Japan.

View Article and Find Full Text PDF

We report a 17-year-old man with destructive pulmonary embolism caused by Staphylococcus aureus bacteremia. The patient was not immunocompromised and had neither underlying diseases nor risk factors, such as concomitant influenza viral infection, which exacerbate staphylococcal infections. The rapid and extensive progression of pulmonary involvement in all lung fields make this a rare case; there have been few reports in the literature describing a similar radiographic appearance in patients with community-acquired staphylococcal bacteremia.

View Article and Find Full Text PDF