scholarly journals Identification through Culture and Molecular Methods of Campylobacter jejuni, Campylobacter coli and Campylobacter fetus in Surface Waters in Rasht

2019 ◽  
pp. 1-7
Author(s):  
Keyvan Roshanjo ◽  
Nematallah Jonaidi Jafari ◽  
Leila Asadpour ◽  
Reza Ranjbar ◽  
Davoud Afshar ◽  
...  
Keyword(s):  
Multiplex Pcr ◽  
Campylobacter Jejuni ◽  
Surface Waters ◽  
Disease Transmission ◽  
Cross Sectional Study ◽  
Campylobacter Coli ◽  
Infectious Agents ◽  
Biochemical Tests ◽  
Cross Sectional ◽  
Campylobacter Fetus

Backgrounds: As zoonotic infectious agents, Campylobacter spp. are important factors causing gastroenteritis in humans. Surveys show that the three strains; Campylobacter jejuni, Campylobacter coli and Campylobacter fetus play a major role in human infections. Identification of these infectious agents is valuable for sanitary control of disease transmission through water resources. Objectives: The aim of this study was identification and molecular diagnosis of Campylobacter jejuni, Campylobacter coli and Campylobacter fetus in surface waters in Rasht. Materials and Methods: This cross-sectional study was conducted on 45 samples of surface water in Rasht collected according to water health guidelines. After culture and biochemical tests on collected samples, detection and identification of Campylobacter jejuni, Campylobacter coli and Campylobacter fetus was done using sequence-specific amplification by Multiplex PCR. The results were subjected to statistical analysis using SPSS software. Results: Out of 45 samples tested, 6 were positive in culture, four of which were identified as Campylobacter jejuni after biochemical tests. Using Multiplex PCR, 8 samples were positive, from which 3 were Campylobacter jejuni, 1 Campylobacter coli and 4 were positive for both Campylobacter jejuni and Campylobacter coli. All the samples did not yield C. fetus. Conclusions: Multiplex PCR is regarded a diagnostic method with higher sensitivity and specificity than compared to methods for Campylobacter. The prevalence of Campylobacter jejuni and Campylobacter coli in surface waters in Rasht is considerable. Therefore, public health measures for the control of these organisms are recommended.

scholarly journals Multiplex PCR Assay for Identifi cation and Differentiation of Campylobacter jejuni and Campylobacter coli Isolates

Folia Medica ◽  
2016 ◽  
Vol 58 (2) ◽  
pp. 95-100 ◽  
Author(s):  
Maria R. Pavlova ◽  
Elina G. Dobreva ◽  
Katucha I. Ivanova ◽  
Galina D. Asseva ◽  
Ivan N. Ivanov ◽  
...  
Keyword(s):  
Multiplex Pcr ◽  
Campylobacter Jejuni ◽  
Accurate Method ◽  
Clinical Isolates ◽  
Campylobacter Coli ◽  
Pcr Assay ◽  
Biochemical Tests ◽  
Multiplex Pcr Assay ◽  
Hydrolysis Of ◽  
Campylobacter Spp

AbstractIntroduction: Campylobacter spp. are important causative agents of gastrointestinal infections in humans. The most frequently isolated strains of this bacterial genus are Campylobacter jejuni and Campylobacter coli. To date, genetic methods for bacterial identification have not been used in Bulgaria. We optimized the multiplex PSR assay to identify Campylobacter spp. and differentiate C. jejuni from C. coli in clinical isolates. We also compared this method with the routinely used biochemical methods.Aim: To identify Campylobacter spp. and discriminate C. coli from C. jejuni in clinical isolates using multiplex PCR assay.Materials and methods: Between February 2014 and January 2015 we studied 93 stool samples taken from patients with diarrheal syndrome and identified 40 species of Campylobacter spp. in them. The clinical material was cultured in microaerophilic atmosphere, the isolated strains being biochemically diff erentiated (hydrolysis of sodium hippurate for C. jejuni, and hydrolysis of indoxyl acetate for C. coli). DNA was isolated from the strains using QiaAmp MiniKit (QIAGEN, Germany). Twenty strains were tested with multiplex PCR for the presence of these genes: cadF, characteristic for Campylobacter spp., hipO for C. jejuni and asp for C. coli.Results and discussion: The biochemical tests identified 16 strains of C. jejuni, 3 strains of C. coli, and 1 strain of C. upsaliensis. After the multiplex PCR assay the capillary gel electrophoresis confirmed 16 strains of C. jejuni, 2 strains of C. coli and 2 strains of Campylobacter spp. - because of the presence of the gene cadF. C. jejuni has the gene hipO, and it is possible that this gene may not be expressed in the biochemical differentiation yielding a negative reaction as a result. In comparison, we can conclude that the genetic differentiation is a more accurate method than the biochemical tests.Conclusion: The multiplex PCR assay is a fast, accurate method for identifi cation of Campylobacter spp. which makes it quite necessary in the clinical diagnostic practice.

scholarly journals Development of a multiplex PCR assay for identification of Campylobacter coli, Campylobacter fetus, Campylobacter hyointestinalis subsp. hyointestinalis, Campylobacter jejuni, Campylobacter lari and Campylobacter upsaliensis

2007 ◽  
Vol 56 (11) ◽  
pp. 1467-1473 ◽  
Author(s):  
Wataru Yamazaki-Matsune ◽  
Masumi Taguchi ◽  
Kazuko Seto ◽  
Ryuji Kawahara ◽  
Kentaro Kawatsu ◽  
...  
Keyword(s):  
Multiplex Pcr ◽  
Campylobacter Jejuni ◽  
Campylobacter Coli ◽  
Pcr Assay ◽  
Specific Pcr ◽  
Campylobacter Fetus ◽  
Multiplex Pcr Assay ◽  
Pcr Products ◽  
Campylobacter Lari ◽  
Campylobacter Upsaliensis

A multiplex PCR assay has been developed for the identification of the six common Campylobacter taxa associated with human gastroenteritis and/or septicaemia, namely Campylobacter coli, Campylobacter fetus, Campylobacter hyointestinalis subsp. hyointestinalis, Campylobacter jejuni, Campylobacter lari and Campylobacter upsaliensis. The assay was developed using a combination of newly designed and published primers. It provided a specific PCR product for each of the five Campylobacter species and the one subspecies, and each of the PCR products was sufficiently distinguished by a difference in size by agarose gel electrophoresis. On evaluation of efficacy with 142 Campylobacter strains, the assay correctly identified all strains as 1 of the 6 Campylobacter taxa. This multiplex PCR assay is a rapid, simple and practical tool for identification of the six Campylobacter taxa commonly associated with gastroenteritis and/or septicaemia in humans, and offers an effective alternative to conventional biochemical-based assays.

scholarly journals Knowledge about blood-borne pathogens and the prevalence of needle stick injuries among medical students in Serbia

2017 ◽  
Vol 56 (3) ◽  
pp. 179-184 ◽  
Author(s):  
Vuk Marusic ◽  
Ljiljana Markovic-Denic ◽  
Olivera Djuric ◽  
Dragana Protic ◽  
Emilija Dubljanin-Raspopovic
Keyword(s):  
Medical Students ◽  
Hepatitis B ◽  
Disease Transmission ◽  
Cross Sectional Study ◽  
Hepatitis B Vaccination ◽  
Cross Sectional ◽  
Needle Stick ◽  
Sharp Object ◽  
Needle Stick Injuries ◽  
Needle Sticks

AbstractIntroductionMedical students are mainly exposed to needle stick and sharp object injuries in the course of their clinical activities during studying. They are at high risk due to their undeveloped skills, restricted clinical experience, lack of knowledge and risk perception. The objectives of this study were to determine the prevalence of needle stick injuries of the fourth and final year medical students, and to estimate their knowledge about blood-borne pathogens disease transmission and standard precautions.MethodsThis cross-sectional study was conducted at the Faculty of Medicine, in February 2014. The students were invited to self-administer a questionnaire of 26 closed questions prepared for this study.ResultsThe questionnaire was filled in and returned by 637 students. The prevalence of needle sticks and sharp object injuries was 29.5%. Needle stick injuries were the most common type of accidents, more frequent among the fourth compared to the sixth year students (p=0.002). The majority of accidents occurred in patient rooms (53%) and the emergency department (15%). 54% of participants reported an accident to the responsible person. Students without accidents had a significantly better perception of risk (3.79 vs. 3.35; p<0.05). Out of the total participating students, only 16.6% (106/637) received all three doses of Hepatitis B vaccination, while 16.2% were partially vaccinated.ConclusionsThere is a need for additional theoretical and practical education of our students on blood exposure via accidents, raising the awareness of the necessity of hepatitis B vaccination, and introducing the unique/comprehensive procedure for accident reporting for students and healthcare workers in the entire country.

scholarly journals IMPACT OF MULTIPLEX PCR IN REDUCING THE RISK OF RESIDUAL TRANSFUSION-TRANSMITTED HUMAN IMMUNODEFICIENCY AND HEPATITIS B AND C VIRUSES IN BURKINA FASO

2018 ◽  
Vol 10 (1) ◽  
pp. e2018041 ◽  
Author(s):  
Arzouma Paul YOODA ◽  
Serge Theophile SOUBEIGA ◽  
Kompingnin Yacouba NEBIE ◽  
Birama DIARRA ◽  
Salam SAWADOGO ◽  
...  
Keyword(s):  
Blood Transfusion ◽  
Hepatitis B ◽  
Burkina Faso ◽  
Multiplex Pcr ◽  
Blood Donation ◽  
Cross Sectional Study ◽  
Residual Risk ◽  
Serological Tests ◽  
Cross Sectional ◽  
The Impact

Background and ObjectiveThe improved performance of serological tests has significantly reduced the risk of human immunodeficiency and hepatitis B and C viruses transmission by blood transfusion, but there is a persistence of residual risk. The objective of this study was to evaluate the impact of multiplex PCR in reducing the risk of residual transmission of these viruses in seronegative blood donors in Burkina Faso.MethodsThis cross-sectional study was conducted from March to September 2017. The serological tests were performed on sera using ARCHITECTSR i1000 (Abbot diagnosis, USA). Detection of viral nucleic acids was performed by multiplex PCR on mini-pools of seronegative plasma for HBV, HCV and HIV using SaCycler-96 Real Time PCR v.7.3 (Sacace Biotechnologies). Multiplex PCR-positive samples from these mini-pools were then individually tested by the same method.Results A total of 989 donors aged 17 to 65 were included in the present study. "Repeat donors" accounted for 44.79% (443/989). Seroprevalences for HIV, HBV, and HCV were 2.53% (25/989), 7.28% (72/989) and 2.73% (27/989), respectively. Of the 14 co-infections detected, HBV/HCV was the most common with 0.71% (7/989) of cases. Of 808 donations tested by multiplex PCR, 4.70% (38/808) were positive for HBV while no donation was positive for HIV or HCV.Conclusion: Our study showed a high residual risk of HBV transmission through blood transfusion. Due to the high prevalence of blood-borne infections in Burkina Faso, we recommend the addition of multiplex PCR to serologic tests for optimal blood donation screening.

scholarly journals Multiplex PCR for direct identification of Campylobacter spp. in human and chicken stools

2007 ◽  
Vol 56 (10) ◽  
pp. 1350-1355 ◽  
Author(s):  
Aisha Al Amri ◽  
Abiola C. Senok ◽  
Abdulrahman Yusuf Ismaeel ◽  
Ali E. Al-Mahmeed ◽  
Giuseppe A. Botta
Keyword(s):  
Multiplex Pcr ◽  
Direct Detection ◽  
False Negative ◽  
Enteric Bacteria ◽  
Enzymic Activity ◽  
Campylobacter Coli ◽  
Biochemical Tests ◽  
Direct Evaluation ◽  
Stool Specimens ◽  
Culture Negative

Differentiation between Campylobacter jejuni and Campylobacter coli is problematic in clinical specimens due to fastidious growth requirements and limited biochemical tests. This study describes a rapid, multiplex PCR protocol for the direct detection and differentiation of C. jejuni and C. coli in stools. An evaluation was carried out of this multiplex protocol based on the detection of cadF (genus specific), and hipO (C. jejuni) and asp (C. coli) genes, using stool from patients with Campylobacter enteritis and chicken. Protocol sensitivity was assessed and specificity determined using a panel of enteric bacteria, and evaluation of 30 diarrhoeic stool specimens culture negative for Campylobacter. Of the 114 specimens (54 human and 60 chicken) evaluated by the protocol, 70 (61.4 %) were identified as C. jejuni, 35 (30.7 %) as C. coli and 9 (7.9 %) as a mixed infection/colonization with both species. All mixed infections were identified as C. jejuni by culture. Among the stool specimens that were culture negative for Campylobacter, two (6.7 %) were C. jejuni positive by multiplex PCR. The protocol sensitivity limit was 0.015–0.016 ng C. jejuni and C. coli DNA μl−1 in the specimen. There was no cross-reaction with the reference strains assessed. Comparison of hippurate test and multiplex PCR demonstrated 17 isolates with false-positive hippurate enzymic activity and 7 with false-negative activity. This rapid protocol (turnaround time 6 h) is highly sensitive and specific for direct evaluation of stool for these pathogens. It has significant application for routine clinical diagnostic and epidemiological purposes.

scholarly journals Evaluation of a Multiplex PCR Assay for the Identification of Campylobacter jejuni and Campylobacter coli

2017 ◽  
Vol 3 (1) ◽  
pp. 6-8
Author(s):  
Saeed Shams ◽  
Mehdi Ghorbanalizadgan ◽  
Somayeh Haj Mahmmodi ◽  
Alessandra Piccirillo ◽  
◽  
...  
Keyword(s):  
Multiplex Pcr ◽  
Campylobacter Jejuni ◽  
Campylobacter Coli ◽  
Pcr Assay ◽  
Multiplex Pcr Assay

scholarly journals Serotype Distribution of Streptococcus pneumoniae Carriage ‎in Six-Month-Old Infants: A Cross-sectional Study During 2017-18, Tehran, ‎Iran

2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Shirin Sayyahfar ◽  
Abdoulreza Esteghamati ◽  
Seyed Alireza Fahimzad ◽  
Safura Hajisadeghi Isfahani ◽  
Ali Nazari Alam ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Multiplex Pcr ◽  
Positive Culture ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Serotype Distribution ◽  
Cross Sectional ◽  
Non Invasive ◽  
Healthy Infants ◽  
Invasive Infections

Background: Streptococcus pneumoniae is recognized as one of the main pathogens inducing several invasive and non-invasive infections in children. Objective: The present study aimed to evaluate the serotype distribution of S. pneumoniae in six–month–old carriers. Methods: This study encompassed 600 six-month-old healthy infants whose pharyngeal swap samples were collected and then cultured to isolate S. pneumoniae. Twenty- five different serotypes were defined on positive culture samples by multiplex PCR. Results: In this study, 13 cases (2.2%) were positive S. pneumonia. The most common isolated serotypes of S. pneumoniae were serotypes 23F (n = 6, 1%) and 3 (n = 3, 0.5%), respectively. Notably, the most frequent serotype in formula-fed infants (n = 300) was Serotype 23F (n = 5, 1.7%); however, Serotype 3 (n = 3, 1%) was the most frequent one in breastfed participants (n = 300). According to the findings, the overall coverage of PCV10, PCV13, and PPSV23 on the S. pneumoniae serotypes at the age of six months was 50%, 73%, and 85%, respectively. Conclusions: At this age, the type of feeding could not significantly affect the frequency rate of S. pneumoniae colonization, while the serotype distributions in the two breastfed and formula-fed groups were different.

scholarly journals An observational study to compare adenosine deaminase level among diabetes patients

2019 ◽  
Vol 7 (2) ◽  
pp. 473
Author(s):  
Vivek Sharma ◽  
Sangeeta Bhattacharya ◽  
Poornima Dey Sarkar ◽  
Gini Garima ◽  
Neeraj Gour ◽  
...  
Keyword(s):  
Cross Sectional Study ◽  
Adipose Tissue Inflammation ◽  
Sectional Study ◽  
Biochemical Tests ◽  
Cross Sectional ◽  
Metabolic Derangement ◽  
Prognostic Predictor ◽  
Medical College ◽  
Complex Disorder ◽  
Diabetes Patients

Background: Obesity is a complex disorder that involves some degree of over-consumption1 coupled with a metabolic derangement. As ADA has been putatively associated with inflammation, and adipose tissue inflammation is the hallmark of insulin resistance in obese T2DM patients. This study attempted to compare serum ADA in T2DM subjects.Methods: This observational cross-sectional study was conducted in the Department of Biochemistry at MGM Medical College and MY Hospital. All the patients and controls were clinically examined, and routine biochemical tests were analyzed for all subjects. ANOVA has been applied to assess the variance between groups.Results: Mean age of controls was 56.91 years where as mean age in the group of a subject with Obesity with diabetes was 40.91 years and with Obesity without diabetes was 48.10 years. ADA level was more among diabetes patients having obesity than diabetes patients having no obesity and controls.Conclusions: This is very much evident through this study that ADA may be treated as prognostic predictor of diabetes either linked to obesity or not, though more studies are warranted in same direction to make this finding conclusive and acceptable biochemical evidence.

Sleep, social behavior and food consumption of schoolchildren of a large Brazilian city

2020 ◽  
pp. 1-24
Author(s):  
Adriana Cândida da Silva ◽  
Érica Leandro Marciano Vieira ◽  
Luana Caroline dos Santos
Keyword(s):  
Food Consumption ◽  
Social Behaviour ◽  
Cross Sectional Study ◽  
Poor Sleep ◽  
Biochemical Tests ◽  
Cross Sectional ◽  
Strengths And Difficulties ◽  
Before School ◽  
Sleep Talking

Abstract Objective: To characterize sleep and associated factors to their inadequacy, mainly social behaviour and food consumption of children and adolescents. Design: Cross-sectional study. Setting: Sleep information, social behaviour (Strengths and Difficulties Questionnaire), food consumption, demography, nutritional status, lifestyle and biochemical tests were investigated. Participants: Schoolchildren of the 4th grade of the municipal school system of a large Brazilian city. Results: A total of 797 schoolchildren, 50.9% was female, median of 9.7 (9.5-10.0) y old and energy consumption of 1819.7 (1429.9-2334.2) kcal. It was identified 31.6% of overweight and 76.8% reported insufficient weekly practice of physical activity. It was observed a median of 9.6 (8.9-10.5) h of sleep (lower values on weekdays: 9.3 vs 10.5h, P<0.001). In addition, 27% of individuals with inadequate sleep (<9h) enjoy longer screen time daily (≥2h/day) (P=0.05), inadequate bedtime (>22h) or adequate wake-up time (5-7h), study in the morning (P<0.001) and never take a shower before school (P<0.001). There was 9.9% of the sample with poor and very poor sleep quality and a greater probability of always sleep talking, have difficulty getting to sleep and inadequate social behaviour between these in relation to those with positive quality of sleep. There was no association of sleep with the other variables investigated. Conclusions: Sleep impairment contributed to changes in sleep and social behaviour in schoolchildren. The findings of this study may reinforce the importance of developing actions to promote adequate sleep and lifestyle at school age.

scholarly journals Bacterial Etiology of Wound Exudates in Tertiary Care Cancer Patients and Antibiogram of the Isolates

2020 ◽  
Vol 13 ◽  
pp. 117863372095207
Author(s):  
Kiran Duwadi ◽  
Sujan Khadka ◽  
Sanjib Adhikari ◽  
Sanjeep Sapkota ◽  
Pabitra Shrestha
Keyword(s):  
Staphylococcus Aureus ◽  
Pathogenic Bacteria ◽  
Methicillin Resistance ◽  
Tertiary Care ◽  
Antibiotic Sensitivity ◽  
Cross Sectional Study ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Biochemical Tests ◽  
Cross Sectional

Introduction: Patients with malignancies frequently develop infections as a result of surgical procedures and fungating wounds leading to pus formation. This cross-sectional study was conducted to explore the bacteriological spectra of infections of various cancer sites and their antibiotic sensitivity patterns among the patients visiting minor operation theatre (OT) of B.P. Koirala Memorial Cancer Hospital (BPKMCH), Chitwan, Nepal. Methods: Over a period of 3 months from September to November 2018, a total of 183 wound exudates and pus samples were collected and analyzed by standard microbiological procedures. Isolates were identified based on the colony characters, Gram staining and an array of biochemical tests. Antibiotic susceptibility testing was performed by Kirby-Bauer disc diffusion technique according to criteria set by CLSI, 2016. Methicillin resistance in Staphylococcus aureus was tested with the help of cefoxitin using disc diffusion method. Results: Out of the 183 samples, 149 (81.4%) were culture positive. Among 13 different isolates identified, S. aureus (43.0%) was predominant followed by E. coli (14.0%). Higher incidence of bacteria was seen among the males (52.3%), in the age group 51 to 60 years (26.8%) and among the patients undergoing surgical intervention to deal with cancer (34.2%). The prevalence of wound infection was significantly affected by gender, age, and treatment regimen ( P < .01). Out of the total 68 S. aureus isolates, 38 (44.1%) were deemed as Methicillin-resistant Staphylococcus aureus (MRSA). Among the 158 isolates, 85 (53.8%) were multi-drug resistant (MDR). Cefepime was the most effective antibiotic for Gram positive isolates whereas both imipenem and meropenem were found to be equally more effective for Gram negative isolates. Conclusion: This study suggests that patients with malignancies harbor pathogenic bacteria; therefore, prudent use of antibiotics is essential to prevent the emergence of MDR pathogens.

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