Detection of Mycobacterium tuberculosis from the stool of HIV sero-positive individuals suspected of pulmonary tuberculosis

The impact of tuberculosis (TB) is exacerbated in Africa because of the human immunodeficiency virus (HIV) pandemic. Pulmonary tuberculosis (PTB) diagnosis is difficult in HIV-infected patients and negative sputum results are more common which leads to diagnostic delay and increases morbidity and mo...

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Veröffentlicht in:PloS one 2017-05, Vol.12 (5), p.e0177529
Hauptverfasser: Abaye, Gizaw E, Abebe, Tamrat, Worku, Adane, Tolessa, Debela, Ameni, Gobena, Mihret, Adane
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container_start_page e0177529
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creator Abaye, Gizaw E
Abebe, Tamrat
Worku, Adane
Tolessa, Debela
Ameni, Gobena
Mihret, Adane
description The impact of tuberculosis (TB) is exacerbated in Africa because of the human immunodeficiency virus (HIV) pandemic. Pulmonary tuberculosis (PTB) diagnosis is difficult in HIV-infected patients and negative sputum results are more common which leads to diagnostic delay and increases morbidity and mortality. Extra-pulmonary samples such as stool may be easier to obtain and our approach may therefore significantly improve PTB detection in people living with HIV. To detect Mycobacterium tuberculosis from the stool of HIV sero-positive individuals suspected of pulmonary TB. A total of 117 HIV-infected individuals from three public health facilities in Addis Ababa, Ethiopia were enrolled consecutively in the study. Paired morning sputum and stool samples were simultaneously collected from anti-retroviral therapy (ART) naïve individuals living with HIV and suspected for PTB. The diagnostic accuracy of the smear microscopy, culture and region of difference (RD)9-based polymerase chain reaction (PCR) in stool was compared with the accuracy of sputum testing. Chi-square test and kappa value were used to compare different method used. Sputum culture positivity for mycobacteria was confirmed in 33(28.2%) of the study subjects. Of 33 individuals positive for sputa culture, 10 individuals were observed to be stools culture positive. Of the 84 individuals negative for mycobacteria by sputum culture, three (3.6%) were stool culture positive and thus, the sensitivity and agreement between stool culture as compare to sputum culture were 30.3% and 0.33, respectively. Of 117 individuals, 11(9.4%) were sputum smear positive and of 11 sputum smear positive three were also stool smear positive. While of the 106 sputum smear negative individuals', only one was stool smear positive resulting in 12.1% sensitivity and 0.18 agreements against sputum culture. On the other hand, the sensitivity of RD9-based PCR directly on stool was 69.7% by considering sputum culture as a reference standard. Moreover, RD9-based PCR directly on sputum detected 7(6.0%) individuals who were sputum culture negative for M. tuberculosis. M. tuberculosis was detected in stool of individuals living with HIV who were negative for sputum smear microscopy and culture. Hence, examination of stool samples alongside with sputum samples increases the detection of PTB in individuals living with HIV.
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Pulmonary tuberculosis (PTB) diagnosis is difficult in HIV-infected patients and negative sputum results are more common which leads to diagnostic delay and increases morbidity and mortality. Extra-pulmonary samples such as stool may be easier to obtain and our approach may therefore significantly improve PTB detection in people living with HIV. To detect Mycobacterium tuberculosis from the stool of HIV sero-positive individuals suspected of pulmonary TB. A total of 117 HIV-infected individuals from three public health facilities in Addis Ababa, Ethiopia were enrolled consecutively in the study. Paired morning sputum and stool samples were simultaneously collected from anti-retroviral therapy (ART) naïve individuals living with HIV and suspected for PTB. The diagnostic accuracy of the smear microscopy, culture and region of difference (RD)9-based polymerase chain reaction (PCR) in stool was compared with the accuracy of sputum testing. Chi-square test and kappa value were used to compare different method used. Sputum culture positivity for mycobacteria was confirmed in 33(28.2%) of the study subjects. Of 33 individuals positive for sputa culture, 10 individuals were observed to be stools culture positive. Of the 84 individuals negative for mycobacteria by sputum culture, three (3.6%) were stool culture positive and thus, the sensitivity and agreement between stool culture as compare to sputum culture were 30.3% and 0.33, respectively. Of 117 individuals, 11(9.4%) were sputum smear positive and of 11 sputum smear positive three were also stool smear positive. While of the 106 sputum smear negative individuals', only one was stool smear positive resulting in 12.1% sensitivity and 0.18 agreements against sputum culture. On the other hand, the sensitivity of RD9-based PCR directly on stool was 69.7% by considering sputum culture as a reference standard. Moreover, RD9-based PCR directly on sputum detected 7(6.0%) individuals who were sputum culture negative for M. tuberculosis. M. tuberculosis was detected in stool of individuals living with HIV who were negative for sputum smear microscopy and culture. Hence, examination of stool samples alongside with sputum samples increases the detection of PTB in individuals living with HIV.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0177529</identifier><identifier>PMID: 28542255</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Acquired immune deficiency syndrome ; Activation ; Adult ; Adults ; AIDS ; Analysis ; Antiretroviral therapy ; Assaying ; Bacilli ; Bacteria ; Biology ; Biology and Life Sciences ; Biopsy ; Bronchoscopy ; Care and treatment ; CD4 antigen ; Cell culture ; Chemotherapy ; Children ; Classification ; Clinical microbiology ; Collection ; Cysteine ; Data acquisition ; Data processing ; Death ; Decontamination ; Developing countries ; Diagnosis ; Diagnostic tests ; Diarrhea ; Drug resistance ; Epidemics ; Ethiopia ; Feces ; Feces - microbiology ; Female ; Fever ; Fiber optics ; Health aspects ; HIV ; HIV patients ; HIV Seropositivity - complications ; Human immunodeficiency virus ; Humans ; Immunology ; Incidence ; Infections ; Infectious diseases ; Inflammation ; Intestine ; LDCs ; Lungs ; Male ; Management ; Medical diagnosis ; Medicine ; Medicine and Health Sciences ; Microbiology ; Microscopy ; Middle Aged ; Morbidity ; Mycobacterium tuberculosis - isolation &amp; purification ; Mycobacterium tuberculosis - physiology ; Pandemics ; Pathogens ; Patient outcomes ; Patients ; Public health ; Pulmonary tuberculosis ; Radiography ; Research and Analysis Methods ; Risk ; Secretions ; Sputum - microbiology ; Thawing ; Tuberculosis ; Tuberculosis, Pulmonary - complications ; Tuberculosis, Pulmonary - diagnosis ; Tuberculosis, Pulmonary - microbiology ; Viruses ; Young Adult</subject><ispartof>PloS one, 2017-05, Vol.12 (5), p.e0177529</ispartof><rights>COPYRIGHT 2017 Public Library of Science</rights><rights>2017 Abaye et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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Pulmonary tuberculosis (PTB) diagnosis is difficult in HIV-infected patients and negative sputum results are more common which leads to diagnostic delay and increases morbidity and mortality. Extra-pulmonary samples such as stool may be easier to obtain and our approach may therefore significantly improve PTB detection in people living with HIV. To detect Mycobacterium tuberculosis from the stool of HIV sero-positive individuals suspected of pulmonary TB. A total of 117 HIV-infected individuals from three public health facilities in Addis Ababa, Ethiopia were enrolled consecutively in the study. Paired morning sputum and stool samples were simultaneously collected from anti-retroviral therapy (ART) naïve individuals living with HIV and suspected for PTB. The diagnostic accuracy of the smear microscopy, culture and region of difference (RD)9-based polymerase chain reaction (PCR) in stool was compared with the accuracy of sputum testing. 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Moreover, RD9-based PCR directly on sputum detected 7(6.0%) individuals who were sputum culture negative for M. tuberculosis. M. tuberculosis was detected in stool of individuals living with HIV who were negative for sputum smear microscopy and culture. Hence, examination of stool samples alongside with sputum samples increases the detection of PTB in individuals living with HIV.</description><subject>Acquired immune deficiency syndrome</subject><subject>Activation</subject><subject>Adult</subject><subject>Adults</subject><subject>AIDS</subject><subject>Analysis</subject><subject>Antiretroviral therapy</subject><subject>Assaying</subject><subject>Bacilli</subject><subject>Bacteria</subject><subject>Biology</subject><subject>Biology and Life Sciences</subject><subject>Biopsy</subject><subject>Bronchoscopy</subject><subject>Care and treatment</subject><subject>CD4 antigen</subject><subject>Cell culture</subject><subject>Chemotherapy</subject><subject>Children</subject><subject>Classification</subject><subject>Clinical microbiology</subject><subject>Collection</subject><subject>Cysteine</subject><subject>Data acquisition</subject><subject>Data processing</subject><subject>Death</subject><subject>Decontamination</subject><subject>Developing countries</subject><subject>Diagnosis</subject><subject>Diagnostic tests</subject><subject>Diarrhea</subject><subject>Drug resistance</subject><subject>Epidemics</subject><subject>Ethiopia</subject><subject>Feces</subject><subject>Feces - microbiology</subject><subject>Female</subject><subject>Fever</subject><subject>Fiber optics</subject><subject>Health aspects</subject><subject>HIV</subject><subject>HIV patients</subject><subject>HIV Seropositivity - complications</subject><subject>Human immunodeficiency virus</subject><subject>Humans</subject><subject>Immunology</subject><subject>Incidence</subject><subject>Infections</subject><subject>Infectious diseases</subject><subject>Inflammation</subject><subject>Intestine</subject><subject>LDCs</subject><subject>Lungs</subject><subject>Male</subject><subject>Management</subject><subject>Medical diagnosis</subject><subject>Medicine</subject><subject>Medicine and Health Sciences</subject><subject>Microbiology</subject><subject>Microscopy</subject><subject>Middle Aged</subject><subject>Morbidity</subject><subject>Mycobacterium tuberculosis - isolation &amp; 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Pulmonary tuberculosis (PTB) diagnosis is difficult in HIV-infected patients and negative sputum results are more common which leads to diagnostic delay and increases morbidity and mortality. Extra-pulmonary samples such as stool may be easier to obtain and our approach may therefore significantly improve PTB detection in people living with HIV. To detect Mycobacterium tuberculosis from the stool of HIV sero-positive individuals suspected of pulmonary TB. A total of 117 HIV-infected individuals from three public health facilities in Addis Ababa, Ethiopia were enrolled consecutively in the study. Paired morning sputum and stool samples were simultaneously collected from anti-retroviral therapy (ART) naïve individuals living with HIV and suspected for PTB. The diagnostic accuracy of the smear microscopy, culture and region of difference (RD)9-based polymerase chain reaction (PCR) in stool was compared with the accuracy of sputum testing. Chi-square test and kappa value were used to compare different method used. Sputum culture positivity for mycobacteria was confirmed in 33(28.2%) of the study subjects. Of 33 individuals positive for sputa culture, 10 individuals were observed to be stools culture positive. Of the 84 individuals negative for mycobacteria by sputum culture, three (3.6%) were stool culture positive and thus, the sensitivity and agreement between stool culture as compare to sputum culture were 30.3% and 0.33, respectively. Of 117 individuals, 11(9.4%) were sputum smear positive and of 11 sputum smear positive three were also stool smear positive. While of the 106 sputum smear negative individuals', only one was stool smear positive resulting in 12.1% sensitivity and 0.18 agreements against sputum culture. On the other hand, the sensitivity of RD9-based PCR directly on stool was 69.7% by considering sputum culture as a reference standard. Moreover, RD9-based PCR directly on sputum detected 7(6.0%) individuals who were sputum culture negative for M. tuberculosis. M. tuberculosis was detected in stool of individuals living with HIV who were negative for sputum smear microscopy and culture. Hence, examination of stool samples alongside with sputum samples increases the detection of PTB in individuals living with HIV.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>28542255</pmid><doi>10.1371/journal.pone.0177529</doi><tpages>e0177529</tpages><orcidid>https://orcid.org/0000-0001-8169-1453</orcidid><oa>free_for_read</oa></addata></record>
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identifier ISSN: 1932-6203
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1932-6203
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source MEDLINE; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Public Library of Science (PLoS); PubMed Central; Free Full-Text Journals in Chemistry
subjects Acquired immune deficiency syndrome
Activation
Adult
Adults
AIDS
Analysis
Antiretroviral therapy
Assaying
Bacilli
Bacteria
Biology
Biology and Life Sciences
Biopsy
Bronchoscopy
Care and treatment
CD4 antigen
Cell culture
Chemotherapy
Children
Classification
Clinical microbiology
Collection
Cysteine
Data acquisition
Data processing
Death
Decontamination
Developing countries
Diagnosis
Diagnostic tests
Diarrhea
Drug resistance
Epidemics
Ethiopia
Feces
Feces - microbiology
Female
Fever
Fiber optics
Health aspects
HIV
HIV patients
HIV Seropositivity - complications
Human immunodeficiency virus
Humans
Immunology
Incidence
Infections
Infectious diseases
Inflammation
Intestine
LDCs
Lungs
Male
Management
Medical diagnosis
Medicine
Medicine and Health Sciences
Microbiology
Microscopy
Middle Aged
Morbidity
Mycobacterium tuberculosis - isolation & purification
Mycobacterium tuberculosis - physiology
Pandemics
Pathogens
Patient outcomes
Patients
Public health
Pulmonary tuberculosis
Radiography
Research and Analysis Methods
Risk
Secretions
Sputum - microbiology
Thawing
Tuberculosis
Tuberculosis, Pulmonary - complications
Tuberculosis, Pulmonary - diagnosis
Tuberculosis, Pulmonary - microbiology
Viruses
Young Adult
title Detection of Mycobacterium tuberculosis from the stool of HIV sero-positive individuals suspected of pulmonary tuberculosis
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