Skip to main content

Comparison of PCR for Detection of tcdA and tcdB in Stool Samples and Direct Toxin Testing Versus Stool Culture for Diagnosis of Toxigenic Clostridium difficile from Hospitalized Patients in Egypt.

Research Abstract
Background: Clostridium difficile is an important pathogen associated with outbreaks of diarrhea and other intestinal disorders, such as pseudomembraneous colitis. Methods: 95 pediatric patients suffering from diarrhea and 37 adult patients from Assiut University Hospital were included in this study. Stool samples were collected from each patient and were subjected to direct toxin immunoassay and culture on cycloserine/cefoxitin/fructose agar for 72hrs. Clostridium difficile isolates were confirmed by the use of API® strips. DNA was extracted from all Clostridium difficile isolates and stool samples and the presence of tcdA and tcdB (Toxin) genes were tested by the use of polymerase chain reaction. We compared the results of the toxin immunoassay and the direct detection of toxin genes with culture ofC. difficile. Results: Clostridium difficile strains were isolated from 17 (17.9 %) pediatric and 10 (27 %) adult fecal samples and all the isolates were confirmed to contain tcdA and tcdB genes that are associated with toxin production “toxigenic culture”. Considering the toxigenic culture as the “gold standard”, the sensitivities, specificities, positive and negative predictive values, and accuracies of the assays , respectively, were 100%, 89.7%, 68%, 100%, 91.6% for toxin A immunoassay in pediatric samples; 82.4%, 100%, 100%, 96.1%, and 96.7% for the direct PCR in pediatric samples; 100%, 96.3%, 90.9%, 100%, and 97.3% for toxin A immunoassay in adult samples; and 100%, 100%, 100%, 100%, and 100% the direct PCR in adult samples. Conclusion: Our findings indicate that direct detection of toxin genes in stool sample is considered a sensitive and specific method for detection of diagnosis C. difficile
Research Authors
Rawhiah F. Abd El-Hamid¹ DVM , Sherine A. Aly¹ MD, PhD, Nagla H. Abu Faddan² MD, PhD and Enas A. Daef¹ MD, PhD
Research Journal
American Society of Microbiology,America
Research Pages
NULL
Research Publisher
NULL
Research Rank
3
Research Vol
NULL
Research Website
NULL
Research Year
2014

Comparison of PCR for Detection of tcdA and tcdB in Stool Samples and Direct Toxin Testing Versus Stool Culture for Diagnosis of Toxigenic Clostridium difficile from Hospitalized Patients in Egypt.

Research Abstract
Background: Clostridium difficile is an important pathogen associated with outbreaks of diarrhea and other intestinal disorders, such as pseudomembraneous colitis. Methods: 95 pediatric patients suffering from diarrhea and 37 adult patients from Assiut University Hospital were included in this study. Stool samples were collected from each patient and were subjected to direct toxin immunoassay and culture on cycloserine/cefoxitin/fructose agar for 72hrs. Clostridium difficile isolates were confirmed by the use of API® strips. DNA was extracted from all Clostridium difficile isolates and stool samples and the presence of tcdA and tcdB (Toxin) genes were tested by the use of polymerase chain reaction. We compared the results of the toxin immunoassay and the direct detection of toxin genes with culture ofC. difficile. Results: Clostridium difficile strains were isolated from 17 (17.9 %) pediatric and 10 (27 %) adult fecal samples and all the isolates were confirmed to contain tcdA and tcdB genes that are associated with toxin production “toxigenic culture”. Considering the toxigenic culture as the “gold standard”, the sensitivities, specificities, positive and negative predictive values, and accuracies of the assays , respectively, were 100%, 89.7%, 68%, 100%, 91.6% for toxin A immunoassay in pediatric samples; 82.4%, 100%, 100%, 96.1%, and 96.7% for the direct PCR in pediatric samples; 100%, 96.3%, 90.9%, 100%, and 97.3% for toxin A immunoassay in adult samples; and 100%, 100%, 100%, 100%, and 100% the direct PCR in adult samples. Conclusion: Our findings indicate that direct detection of toxin genes in stool sample is considered a sensitive and specific method for detection of diagnosis C. difficile
Research Authors
Rawhiah F. Abd El-Hamid¹ DVM , Sherine A. Aly¹ MD, PhD, Nagla H. Abu Faddan² MD, PhD and Enas A. Daef¹ MD, PhD
Research Journal
American Society of Microbiology,America
Research Pages
NULL
Research Publisher
NULL
Research Rank
3
Research Vol
NULL
Research Website
NULL
Research Year
2014

Brucella melitensis biovar 3 in buffaloꞌs milk in a dairy farm at Assiut Governorate.

Research Abstract
the objective of the present study was detection of Brucella organism in buffalos milk collected from buffalo dairy farm through isolation ,identification and typing of the isolates
Research Authors
Abdel-Saboor,Ehsan.H.,*Mohammed,I.S., *Ahmed,S.A., *El-Bauomy,E.E. **and Abd-El-Hamid,Rawhia,F. *
Research Journal
11th Sci.Cong., Egyptian Society for Cattle Diseases ,Egypt
Research Pages
7
Research Publisher
NULL
Research Rank
4
Research Vol
NULL
Research Website
NULL
Research Year
2011

Brucella melitensis biovar 3 in buffaloꞌs milk in a dairy farm at Assiut Governorate.

Research Abstract
the objective of the present study was detection of Brucella organism in buffalos milk collected from buffalo dairy farm through isolation ,identification and typing of the isolates
Research Authors
Abdel-Saboor,Ehsan.H.,*Mohammed,I.S., *Ahmed,S.A., *El-Bauomy,E.E. **and Abd-El-Hamid,Rawhia,F. *
Research Journal
11th Sci.Cong., Egyptian Society for Cattle Diseases ,Egypt
Research Pages
7
Research Publisher
NULL
Research Rank
4
Research Vol
NULL
Research Website
NULL
Research Year
2011

Brucella melitensis biovar 3 in buffaloꞌs milk in a dairy farm at Assiut Governorate.

Research Abstract
the objective of the present study was detection of Brucella organism in buffalos milk collected from buffalo dairy farm through isolation ,identification and typing of the isolates
Research Authors
Abdel-Saboor,Ehsan.H.,*Mohammed,I.S., *Ahmed,S.A., *El-Bauomy,E.E. **and Abd-El-Hamid,Rawhia,F. *
Research Journal
11th Sci.Cong., Egyptian Society for Cattle Diseases ,Egypt
Research Pages
7
Research Publisher
NULL
Research Rank
4
Research Vol
NULL
Research Website
NULL
Research Year
2011

Prolonged peri-firing compression with a linear stapler prevents pancreatic fistula in laparoscopic distal pancreatectomy

Research Abstract
NULL
Research Authors
Nakamura M1, Ueda J, Kohno H, Aly MY, Takahata S, Shimizu S, Tanaka M
Research Department
Research Journal
Surg Endosc.
Research Member
Research Pages
867-871
Research Publisher
Aly MY
Research Rank
1
Research Vol
25- 3
Research Website
NULL
Research Year
2011

Maternal Mortality in Assiut Governorate, Egypt, 2009

Research Abstract
Background: Globally an estimated 287 000 maternal deaths occurred in 2010. Methodology: The study was observational descriptive one aimed to estimate maternal mortality ratio in Assiut Governorate in 2009 and to highlight both avoidable and non-avoidable causes of maternal deaths in order to formulate the appropriate strategies to overcome the avoidable causes of maternal mortality in Assiut Governorate. The relevant data of the study obtained through secondary analysis of data of maternal mortality records obtained from Assiut Health Directorate (Maternal and Child Health Department), 2009. Data of maternal deaths collected by the concerned medical staff through a special questionnaire designed by Ministry of Health and population (Maternal Mortality Surveillance System),this questionnaire covered all demographic data of the target women, place, date and time of death relative to pregnancy (i.e. during abortion, labor, puerperium), full obstetric history and meticulous detail of last pregnancy, type of obstetric care delivered to the target woman (i.e. place & time of initiation of last labor, associated complications, outcome of the baby …..etc). Results: Maternal mortality Ratio in Assiut Governorate in 2009 was 68 / 100,000 live births, about 44% of these deaths happened during perperium and 24% during pregnancy. 34.6% of deaths occurred at home and 25.3% occurred among nulli-prous women. Only 14% of women completed their antenatal care visits while about one-half of cases (51.5%) seek antenatal care once or twice. Hypertensive diseases of pregnancy was the first direct cause of death (27.1%), followed by unexpected sudden death which may be due to pulmonary embolism (18.6%), then postpartum hemorrhage (16.9%) and puerperal sepsis (11.9%). Conclusion: Maternal mortality still represents a major public health problem in Upper Egypt
Research Authors
Mohammad H. Qayed*, Medhat A. Saleh*. Omima Y. Hassn**, Amal A. AbuGhadeer*
Research Journal
The Egyptian Journal of Community Medicine
المجلة المصرية لطب المجتمع مجلد 32؛ عدد1 ؛ يناير 2014
Research Member
Research Pages
P 49: 65.
Research Publisher
NULL
Research Rank
2
Research Vol
Vol. 32 No. 1 January 2014.
Research Website
NULL
Research Year
2014

Maternal Mortality in Assiut Governorate, Egypt, 2009

Research Abstract
Background: Globally an estimated 287 000 maternal deaths occurred in 2010. Methodology: The study was observational descriptive one aimed to estimate maternal mortality ratio in Assiut Governorate in 2009 and to highlight both avoidable and non-avoidable causes of maternal deaths in order to formulate the appropriate strategies to overcome the avoidable causes of maternal mortality in Assiut Governorate. The relevant data of the study obtained through secondary analysis of data of maternal mortality records obtained from Assiut Health Directorate (Maternal and Child Health Department), 2009. Data of maternal deaths collected by the concerned medical staff through a special questionnaire designed by Ministry of Health and population (Maternal Mortality Surveillance System),this questionnaire covered all demographic data of the target women, place, date and time of death relative to pregnancy (i.e. during abortion, labor, puerperium), full obstetric history and meticulous detail of last pregnancy, type of obstetric care delivered to the target woman (i.e. place & time of initiation of last labor, associated complications, outcome of the baby …..etc). Results: Maternal mortality Ratio in Assiut Governorate in 2009 was 68 / 100,000 live births, about 44% of these deaths happened during perperium and 24% during pregnancy. 34.6% of deaths occurred at home and 25.3% occurred among nulli-prous women. Only 14% of women completed their antenatal care visits while about one-half of cases (51.5%) seek antenatal care once or twice. Hypertensive diseases of pregnancy was the first direct cause of death (27.1%), followed by unexpected sudden death which may be due to pulmonary embolism (18.6%), then postpartum hemorrhage (16.9%) and puerperal sepsis (11.9%). Conclusion: Maternal mortality still represents a major public health problem in Upper Egypt
Research Authors
Mohammad H. Qayed*, Medhat A. Saleh*. Omima Y. Hassn**, Amal A. AbuGhadeer*
Research Journal
The Egyptian Journal of Community Medicine
المجلة المصرية لطب المجتمع مجلد 32؛ عدد1 ؛ يناير 2014
Research Member
Research Pages
P 49: 65.
Research Publisher
NULL
Research Rank
2
Research Vol
Vol. 32 No. 1 January 2014.
Research Website
NULL
Research Year
2014

BRAIN FUNCTION IN CHILDERN WITH UNCOMPLICATED EPILEPSY RELATIONSHIP TO BIOMARKERS OF BRAIN DMAGE (NEURONE SPECIFIC ENOLASE AND S100 PROTEIN)

Research Abstract
NULL
Research Authors
شريفة أحمد حامد
عزة أحمد الطيب
حنان عمر محمد
ايهاب منصور موسى
Research Journal
The JOURNAL OF PEDIATRIC EPILEPSY
Research Member
Research Pages
NULL
Research Publisher
NULL
Research Rank
1
Research Vol
NULL
Research Website
NULL
Research Year
2012

BRAIN FUNCTION IN CHILDERN WITH UNCOMPLICATED EPILEPSY RELATIONSHIP TO BIOMARKERS OF BRAIN DMAGE (NEURONE SPECIFIC ENOLASE AND S100 PROTEIN)

Research Abstract
NULL
Research Authors
شريفة أحمد حامد
عزة أحمد الطيب
حنان عمر محمد
ايهاب منصور موسى
Research Journal
The JOURNAL OF PEDIATRIC EPILEPSY
Research Member
Research Pages
NULL
Research Publisher
NULL
Research Rank
1
Research Vol
NULL
Research Website
NULL
Research Year
2012
Subscribe to