Detection of bacterial DNA by in situ hybridization in patients with decompensated liver cirrhosis

Shingo Usui, Hirotoshi Ebinuma, Hakusyo Cho, Nobuhiro Nakamoto, Yoshiyuki Yamagishi, Hidetsugu Saito, Takanori Kanai

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Background: Spontaneous bacterial peritonitis (SBP) is often difficult to diagnose because bacteria in ascites cannot be detected accurately by conventional culture. In situ hybridization (ISH) was previously developed for rapid detection of genes from bacteria phagocytized by neutrophils. SBP may develop after bacteria enter into the systemic circulation following bacterial translocation. Therefore, we performed ISH to identify bacteria in blood samples collected from patients with decompensated liver cirrhosis (LC). Methods: In this retrospective study, peripheral blood samples were collected from 60 patients with decompensated LC, and bacteria were detected by both blood culture and ISH. Moreover, 35 patients underwent paracentesis for diagnosis of SBP. Results: Eight of 35 patients were diagnosed with SBP by polymorphonuclear neutrophil counts, and one patient was diagnosed with bacterascites. Seven of the nine patients showed positive results for ISH, whereas bacteria were detected in only two cases by blood culture. Thirty-seven of 60 cases (62%) showed positive results for ISH, whereas only six samples (10%) were positive by blood culture analysis. Compared with the 23 cases of negative ISH, the 37 cases of positive ISH showed a higher frequency of fever, higher Child-Pugh scores, and lower albumin levels. Conclusions: Detection of bacteria by ISH suggested that bacterial translocation, which cannot be proven by conventional culture, occurred in these patients, and that ISH could be helpful for the early diagnosis of some types of infection and prevention of SBP in these patients.

Original languageEnglish
JournalBMC Gastroenterology
Volume17
Issue number1
DOIs
Publication statusPublished - 2017 Oct 17

Fingerprint

Bacterial DNA
Liver Cirrhosis
In Situ Hybridization
Peritonitis
Bacteria
Bacterial Translocation
Neutrophils
Paracentesis
Ascites
Early Diagnosis
Albumins
Fever
Retrospective Studies

Keywords

  • Bacterial translocation
  • Blood culture
  • In situ hybridization
  • Liver cirrhosis
  • Spontaneous bacterial peritonitis

ASJC Scopus subject areas

  • Gastroenterology

Cite this

Detection of bacterial DNA by in situ hybridization in patients with decompensated liver cirrhosis. / Usui, Shingo; Ebinuma, Hirotoshi; Cho, Hakusyo; Nakamoto, Nobuhiro; Yamagishi, Yoshiyuki; Saito, Hidetsugu; Kanai, Takanori.

In: BMC Gastroenterology, Vol. 17, No. 1, 17.10.2017.

Research output: Contribution to journalArticle

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abstract = "Background: Spontaneous bacterial peritonitis (SBP) is often difficult to diagnose because bacteria in ascites cannot be detected accurately by conventional culture. In situ hybridization (ISH) was previously developed for rapid detection of genes from bacteria phagocytized by neutrophils. SBP may develop after bacteria enter into the systemic circulation following bacterial translocation. Therefore, we performed ISH to identify bacteria in blood samples collected from patients with decompensated liver cirrhosis (LC). Methods: In this retrospective study, peripheral blood samples were collected from 60 patients with decompensated LC, and bacteria were detected by both blood culture and ISH. Moreover, 35 patients underwent paracentesis for diagnosis of SBP. Results: Eight of 35 patients were diagnosed with SBP by polymorphonuclear neutrophil counts, and one patient was diagnosed with bacterascites. Seven of the nine patients showed positive results for ISH, whereas bacteria were detected in only two cases by blood culture. Thirty-seven of 60 cases (62{\%}) showed positive results for ISH, whereas only six samples (10{\%}) were positive by blood culture analysis. Compared with the 23 cases of negative ISH, the 37 cases of positive ISH showed a higher frequency of fever, higher Child-Pugh scores, and lower albumin levels. Conclusions: Detection of bacteria by ISH suggested that bacterial translocation, which cannot be proven by conventional culture, occurred in these patients, and that ISH could be helpful for the early diagnosis of some types of infection and prevention of SBP in these patients.",
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AU - Cho, Hakusyo

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AU - Yamagishi, Yoshiyuki

AU - Saito, Hidetsugu

AU - Kanai, Takanori

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AB - Background: Spontaneous bacterial peritonitis (SBP) is often difficult to diagnose because bacteria in ascites cannot be detected accurately by conventional culture. In situ hybridization (ISH) was previously developed for rapid detection of genes from bacteria phagocytized by neutrophils. SBP may develop after bacteria enter into the systemic circulation following bacterial translocation. Therefore, we performed ISH to identify bacteria in blood samples collected from patients with decompensated liver cirrhosis (LC). Methods: In this retrospective study, peripheral blood samples were collected from 60 patients with decompensated LC, and bacteria were detected by both blood culture and ISH. Moreover, 35 patients underwent paracentesis for diagnosis of SBP. Results: Eight of 35 patients were diagnosed with SBP by polymorphonuclear neutrophil counts, and one patient was diagnosed with bacterascites. Seven of the nine patients showed positive results for ISH, whereas bacteria were detected in only two cases by blood culture. Thirty-seven of 60 cases (62%) showed positive results for ISH, whereas only six samples (10%) were positive by blood culture analysis. Compared with the 23 cases of negative ISH, the 37 cases of positive ISH showed a higher frequency of fever, higher Child-Pugh scores, and lower albumin levels. Conclusions: Detection of bacteria by ISH suggested that bacterial translocation, which cannot be proven by conventional culture, occurred in these patients, and that ISH could be helpful for the early diagnosis of some types of infection and prevention of SBP in these patients.

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