The Prevalence of Shiga toxin-1 in non-Shigella dysenteriae isolates collected from diarrhea samples in patients, Ahvaz, Iran

2020 ◽  
Vol 20 ◽  
Author(s):  
Nahid Mahdian ◽  
Ebrahim Kouhsari ◽  
Ali Gheysarzadeh ◽  
Abbas Maleki ◽  
Hassan Valadbeigi ◽  
...  
Keyword(s):  
Shiga Toxin ◽  
Clinical Symptoms ◽  
Public Health Problem ◽  
Shigella Dysenteriae ◽  
Major Public Health Problem ◽  
Shigella Species ◽  
Causative Agents ◽  
Life Threatening ◽  
Polymerase Chain ◽  
Stx1 Gene

Background: Acute diarrhea is a major public health problem particularly in developing countries. Shigellosis is one of the substantial causative agents of microbial dysentery and still has a remarkable prevalence particularly in areas with poor hygienic infrastructures. The probable existence of the deadly Shiga toxin (Stx) protein in some Shigella strains would manifest life-threatening clinical symptoms of the infection. Methods: The aim of this study was to determine the presence of Shigella toxin 1 (Stx1) in isolated from patients with diarrhea. Totally, 227 Shigella species including 60 S. flexneri, 157 S. sonnei, and 10 S. boydii were collected from diarrheal patients in tropical infectious diseases research center of Ahvaz, Iran, during 2013-2015. The isolates were collected mostly from the intensive care unit, infectious disease, and surgery settings. The isolates were identified and the polymerase chain reaction (PCR) was performed to detect the stx gene. Results: The results indicated that none of them encode the stx1 gene. Conclusion: Isolates of this study were not capable of stx1 encoding. Future investigations should consider the relations between other Shigella species and Shigella toxin in Iran.

scholarly journals The Prevalence of Shiga toxin-1 in Shigella spp. Isolates Collected from Diarrhea Patients, Ahvaz, Iran

2019 ◽  
Author(s):  
Nahid Mahdian ◽  
Ali Gheysarzadeh ◽  
Hassan Valadbeigi ◽  
Sobhan Ghafourian ◽  
Abbas Maleki ◽  
...  
Keyword(s):  
Infectious Disease ◽  
Shiga Toxin ◽  
Clinical Symptoms ◽  
Chain Reaction ◽  
Shigella Species ◽  
Shigella Spp ◽  
Causative Agents ◽  
Life Threatening ◽  
Polymerase Chain ◽  
Tropical Infectious Diseases

Abstract Objective Shigellosis is one of the substantial causative agents of microbial dysentery and still has a remarkable prevalence particularly in areas with poor hygienic infrastructures. The probable existence of the deadly Shiga toxin-1(Stx1) protein in some Shigella strains would manifest life-threatening clinical symptoms of the infection. The aim of this study was to determine the presence of Stx1 in isolated from patients with diarrhea. Results Totally, 227 Shigella species including 60 S. flexneri, 157 S. sonnei, and 10 S. boydii were collected from diarrheal patients in tropical infectious diseases research center of Ahvaz, Iran, from 2013 till 2015. The isolates were collected mostly from the intensive care unit, infectious disease, and surgery settings. The isolates were identified and the polymerase chain reaction (PCR) was performed to detect the stx gene. The results indicated that none of them encode the stx gene. In conclusion isolates of this study were not capable of stx1 encoding.

scholarly journals The Prevalence of Shiga toxin-1 in Shigella spp. Isolates Collected from Diarrhea Patients, Ahvaz, Iran

2020 ◽  
Author(s):  
Nahid Mahdian ◽  
Ali Gheysarzadeh ◽  
Hassan Valadbeigi ◽  
Abbas Maleki ◽  
Norkhoda Sadeghifard
Keyword(s):  
Shiga Toxin ◽  
Clinical Symptoms ◽  
Chain Reaction ◽  
Shigella Species ◽  
Shigella Spp ◽  
Causative Agents ◽  
Life Threatening ◽  
Polymerase Chain ◽  
Tropical Infectious Diseases ◽  
Surgery Department

Abstract ObjectiveShigellosis as one of the substantial causative agents of microbial dysentery still has a remarkable prevalence in areas with poor hygienic infrastructures. The probable existence of the deadly Shiga toxin-1(Stx1) in some Shigella strains would manifest life-threatening clinical symptoms of the infection. The aim of this study was to determine the presence of Stx1 in isolated from patients with diarrhea. ResultsTotally, 227 Shigella species including 60 S. flexneri, 157 S. sonnei, and 10 S. boydii were collected from diarrheal patients in tropical infectious diseases research center of Ahvaz, Iran, from 2013 to 2015. The isolates were collected mostly from the intensive care unit, infectious disease, and surgery department. The isolates were identified and the polymerase chain reaction (PCR) was performed to detect the stx gene. The results indicated that none of them encode the stx gene. In conclusion, isolates of this study were not capable of stx1 encoding.

scholarly journals The Prevalence of Shiga toxin-1 in Shigella spp. Isolates Collected from Diarrhea Patients, Ahvaz, Iran

2019 ◽  
Author(s):  
Nahid Mahdian ◽  
Ali Gheysarzadeh ◽  
Hassan Valadbeigi ◽  
Sobhan Ghafourian ◽  
Abbas Maleki ◽  
...  
Keyword(s):  
Infectious Disease ◽  
Shiga Toxin ◽  
Clinical Symptoms ◽  
Chain Reaction ◽  
Shigella Species ◽  
Shigella Spp ◽  
Causative Agents ◽  
Life Threatening ◽  
Polymerase Chain ◽  
Tropical Infectious Diseases

Abstract Objective Shigellosis is one of the substantial causative agents of microbial dysentery and still has a remarkable prevalence particularly in areas with poor hygienic infrastructures. The probable existence of the deadly Shiga toxin-1(Stx1) protein in some Shigella strains would manifest life-threatening clinical symptoms of the infection. The aim of this study was to determine the presence of Stx1 in isolated from patients with diarrhea. Results Totally, 227 Shigella species including 60 S. flexneri, 157 S. sonnei, and 10 S. boydii were collected from diarrheal patients in tropical infectious diseases research center of Ahvaz, Iran, from 2013 till 2015. The isolates were collected mostly from the intensive care unit, infectious disease, and surgery settings. The isolates were identified and the polymerase chain reaction (PCR) was performed to detect the stx gene. The results indicated that none of them encode the stx gene. In conclusion isolates of this study were not capable of stx1 encoding.

scholarly journals The Prevalence of Shiga toxin-1 in Shigella spp. Isolates Collected from Diarrhea Patients, Ahvaz, Iran

2019 ◽  
Author(s):  
Nahid Mahdian ◽  
Ali Gheysarzadeh ◽  
Hassan Valadbeigi ◽  
Sobhan Ghafourian ◽  
Abbas Maleki ◽  
...  
Keyword(s):  
Infectious Disease ◽  
Shiga Toxin ◽  
Clinical Symptoms ◽  
Chain Reaction ◽  
Shigella Species ◽  
Shigella Spp ◽  
Causative Agents ◽  
Life Threatening ◽  
Polymerase Chain ◽  
Tropical Infectious Diseases

Abstract Objective Shigellosis is one of the substantial causative agents of microbial dysentery and still has a remarkable prevalence particularly in areas with poor hygienic infrastructures. The probable existence of the deadly Shiga toxin-1(Stx1) protein in some Shigella strains would manifest life-threatening clinical symptoms of the infection. The aim of this study was to determine the presence of Stx1 in isolated from patients with diarrhea. Results Totally, 227 Shigella species including 60 S. flexneri, 157 S. sonnei, and 10 S. boydii were collected from diarrheal patients in tropical infectious diseases research center of Ahvaz, Iran, from 2013 till 2015. The isolates were collected mostly from the intensive care unit, infectious disease, and surgery settings. The isolates were identified and the polymerase chain reaction (PCR) was performed to detect the stx gene. The results indicated that none of them encode the stx gene. In conclusion isolates of this study were not capable of stx1 encoding.

scholarly journals POLYMERASE CHAIN REACTION DETECTION OF MYCOBACTERIUM TUBERCULOSIS FROM SPUTUM

2003 ◽  
Vol 42 (146) ◽  
pp. 65-70 ◽  
Author(s):  
Kun Young Sohn ◽  
S Shrestha ◽  
A Khagi ◽  
S S Malla ◽  
B M Pokharel ◽  
...  
Keyword(s):  
Polymerase Chain Reaction ◽  
Mycobacterium Tuberculosis ◽  
Positive Result ◽  
Clinical Symptoms ◽  
Public Health Problem ◽  
Major Public Health Problem ◽  
Chain Reaction ◽  
Polymerase Chain ◽  
Sensitivity Specificity ◽  
Culture Positive

ABSTRACTTuberculosis has remained to be a major public health problem in Nepal. The risk of spread of infection andemergence of drug-resistant strain has created the need for a rapid, sensitive and specific diagnostic test.In addition, clinically suspicious cases that do not give positive result in conventional laboratory test needmore sensitive test for diagnosis.In order to evaluate the possibility of incorporation of Polymerase Chain Reaction (PCR) in the diagnosis oftuberculosis, we performed a comparative study of PCR to detect Mycobacterium tuberculosis in sputumspecimens, against Ziehl-Neelsen (Z-N) stain and culture as a standard method.A total of 103 specimens were subjected to Z-N staining, culture and PCR for detecting Mycobacteriumtuberculosis. Of these, 19 were positive by Z-N stain, 26 by PCR and 25 by culture. Four stain negativespecimens showed positive result in both culture and PCR. Two specimens of stain and culture positive werePCR negative. Five specimens showed positive result only with PCR. Two culture positive specimens gavenegative results by both Z-N stain and PCR. Sensitivity, specificity, positive predictive value and negativepredictive value of PCR which were 84%, 93.5%, 80.8% and 94.9% respectively.This study showed that there is no need for PCR test for the smear positive cases. However, PCR could be apossible diagnostic tool for the confirmation of the smear negative cases that show clinical symptoms of TB.Key Words: Mycobacterium tuberculosis, Z-N stain, PCR, sensitivity, specificity.

scholarly journals Haematological profile of children with malaria in Sorong, West Papua, Indonesia

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Syilvia Jiero ◽  
Ayodhia Pitaloka Pasaribu
Keyword(s):  
Malaria Infection ◽  
Clinical Symptoms ◽  
Public Health Problem ◽  
Malaria Diagnosis ◽  
White Blood Count ◽  
P Value ◽  
Major Public Health Problem ◽  
Age Group ◽  
Haematological Profile ◽  
West Papua

Abstract Background Malaria remains a major public health problem in Indonesian Papua, with children under five years of age being the most affected group. Haematological changes, such as cytopenia that occur during malaria infection have been suggested as potential predictors and can aid in the diagnosis of malaria. This study aimed to assess the haematological alterations associated with malaria infection in children presenting with signs and symptoms of malaria. Methods A retrospective study was performed by collecting data from the medical records of malaria patients at Sorong Regional General Hospital, Sorong, West Papua, Indonesia, both from outpatient and inpatient clinics, from January 2014 until December 2017. The laboratory profile of children suffering from malaria was evaluated. Results One hundred and eighty-two children aged 1 month to 18 years old were enrolled. The subjects were mostly male (112, 61.5%) with a mean age of 6.45 years (SD = 4.3 years). Children below 5 years of age suffered the most from malaria in this study (77, 42.3%). One hundred two subjects (56%) were infected with Plasmodium falciparum. Half of the enrolled subjects (50%) had haemoglobin level (Hb) between 5.1 and 10 gr/dL. A total of 41 children (53.2%) less than 5 years old suffered from P. falciparum infection. In the age group of 5–10 years, there were 34 children (57.6%) who suffered from P. falciparum, and in the age group > 10 years, 27 children (58.7%) suffered from P. falciparum infection. Only 4 subjects (5.2%) in the less than 5 years old age group had mixed malaria infection. Among eight predictors of the haematological profile, there were five predictors that were significantly associated with the diagnostic criteria, namely haemoglobin, haematocrit, leukocytes, platelets and monocytes (p < 0.05). Generally, clinical symptoms are not significantly associated with a malaria diagnosis, and only one variable showed a significant relationship, pale, with a P value of 0.001. Conclusions Children with malaria had changes in some haematological markers, with anaemia, low platelet count, white blood count, and lymphocyte count being the most important predictors of malaria infection in the study area. These markers could be used to raise suspicion of malaria in children living in high endemic areas, such as West Papua.

scholarly journals Analysis of clinical profile of women presenting with pyrexia in pregnancy

2018 ◽  
Vol 7 (4) ◽  
pp. 1406
Author(s):  
Surabhi Porwal ◽  
Amita Sharma
Keyword(s):  
Clinical Symptoms ◽  
Public Health Problem ◽  
Clinical Profile ◽  
Major Public Health Problem ◽  
Abdominal Wall Defects ◽  
Chi Square ◽  
Medical College ◽  
Central Nervous System Defects ◽  
High Risk Situation ◽  
In Pregnancy

Background: Pyrexia in pregnancy is major public health problem in India. Pyrexia in pregnancy is associated with resorption of the embryo, foetal deaths and potentially lethal malformations such as central nervous system defects, abdominal-wall defects, and cardiovascular malformations. This study was carried out to analyse clinical profile of women presenting with pyrexia during pregnancy.Methods: After approval by institutional ethical committee the prospective case control study was conducted in the department of obstetrics and gynecology, NSCB Medical College, Jabalpur (M.P.) from 1st June 2012 to 31st October 2013. Total 100 antenatal women with pyrexia taken as cases and 50 antenatal women without pyrexia taken as control were included and analyzed in this study. In women fulfilling inclusion criteria detailed history was taken and documented in proforma. Required investigations were sent to the department of pathology and virology laboratory of Indian Council of Medical Research, Jabalpur. Results were analyzed statistically by using t test and chi square test.Results: On analysis of clinical symptoms pyrexia, cough, malaise, rash, headache, nausea and vomiting, joint pain, anorexia, breathlessness and burning and frequency of micturition were significantly higher in cases as compare to control. Viral pathogens were responsible for most of the cases of pyrexia in pregnancy.Conclusions: Pyrexia in pregnancy is a high-risk situation, early identification and prompt treatment will reduce maternal and perinatal morbidity and mortality associated with pyrexia in pregnancy.

scholarly journals Fever and Antipyretic Supported by Traditional Chinese Medicine: A Multi-Pathway Regulation

2021 ◽  
Vol 12 ◽  
Author(s):  
Le-Le Ma ◽  
Hui-Min Liu ◽  
Chuan-Hong Luo ◽  
Ya-Nan He ◽  
Fang Wang ◽  
...  
Keyword(s):  
Chinese Medicine ◽  
Traditional Chinese Medicine ◽  
Clinical Symptoms ◽  
Signal Transmission ◽  
Public Health Problem ◽  
Pharmacological Action ◽  
Major Public Health Problem ◽  
Neural Pathways ◽  
The World ◽  
In Series

The coronavirus disease, 2019 (COVID-19), has spread rapidly around the world and become a major public health problem facing the world. Traditional Chinese medicine (TCM) has been fully committed to treat COVID-19 in China. It improved the clinical symptoms of patients and reduced the mortality rate. In light of the fever was identified as one of leading clinical features of COVID-19, this paper will first analyze the material basis of fever, including pyrogenic cytokines and a variety of the mediators of fever. Then the humoral and neural pathways of fever signal transmission will be described. The scattered evidences about fever recorded in recent years are connected in series. On this basis, the understanding of fever is further deepened from the aspects of pathology and physiology. Finally, combining with the chemical composition and pharmacological action of available TCM, we analyzed the mechanisms of TCMs to play the antipyretic effect through multiple ways. So as to further provide the basis for the research of antipyretic compound preparations of TCMs and explore the potential medicines for the prevention and treatment of COVID-19.

Prevalence and Risk Factors Associated with First-Line Anti-Tuberculosis Induced Hepatotoxicity in Suratthani Hospital, Thailand

2021 ◽  
Vol 104 (2) ◽  
pp. 233-239
Keyword(s):  
Risk Factors ◽  
Serum Albumin ◽  
Clinical Symptoms ◽  
Significant Risk ◽  
Public Health Problem ◽  
Major Public Health Problem ◽  
First Line ◽  
Drug Induced ◽  
Factors Associated ◽  
Drug Risk

ackground: Tuberculosis (TB) is a major public health problem, including Thailand. Anti-TB drugs are very effective treatment, but they can cause hepatotoxicity. Data on the prevalence of anti-TB drug-induced hepatotoxicity (DIH), as well as the contributing risk factors, are scarce in Thailand. Objective: To measure the prevalence and identify risk factors associated with first-line drugs (FLD) induced hepatoxicity in TB patients. Materials and Methods: The present study was a retrospective study design in TB clinic of Suratthani Hospital, in Southern Thailand. All patients diagnosed with TB and received FLD between January and December 2017, were eligible for the study. Hepatoxicity defined as the following criteria: serum aspartate aminotransferase (AST) or alanine aminotransferase (ALT) levels >5x upper limit of normal (ULN) without symptoms, or AST or ALT >3x ULN with clinical symptoms. Results: Of all the 198 TB cases, 18 were identified as DIH. Prevalence of DIH was 9.1%. Hepatitis after FLD was independently associated with age>60 years (adjusted OR [aOR] 28.49, 95% CI 2.68 to 302.95, p=0.005) and serum albumin <3.5 g/dL (aOR 20.97, 95% CI 2.11 to 208.51, p=0.009). Conclusion: Age of more than 60 years and low serum albumin of less than 3.5 g/dL were significant risk factors associated with first-line anti-TB drugs induced hepatoxicity. Keywords: Hepatoxicity, Anti-tuberculosis drug, Risk factor, Thailand

scholarly journals Etiology of Diarrhea Requiring Hospitalization in Bangladesh by Quantitative Polymerase Chain Reaction, 2014–2018

2020 ◽  
Author(s):  
Mami Taniuchi ◽  
Kamrul Islam ◽  
Md Abu Sayeed ◽  
James A Platts-Mills ◽  
Md Taufiqul Islam ◽  
...  
Keyword(s):  
Polymerase Chain Reaction ◽  
Vibrio Cholerae ◽  
Coefficient Of Variation ◽  
Quantitative Polymerase Chain Reaction ◽  
Age Groups ◽  
Public Health Problem ◽  
Major Public Health Problem ◽  
Surveillance Systems ◽  
Chain Reaction ◽  
Polymerase Chain

Abstract Background Diarrhea remains a major public health problem and characterization of its etiology is needed to prioritize interventions. However, most data are from single-site studies of children. We tested samples from participants of any age from 11 geographically diverse hospitals in Bangladesh to describe pathogen-specific burdens of diarrhea. Methods We utilized 2 existing diarrhea surveillance systems: a Nationwide network at 10 sentinel hospitals and at the icddr,b hospital. We tested stools from enrolled participants and nondiarrheal controls for enteropathogens using quantitative polymerase chain reaction and calculated pathogen-specific attributable fractions (AFs) of diarrhea. Results We analyzed 5516 patients with diarrhea and 735 controls. Overall, rotavirus had the highest attributable burden of diarrhea (Nationwide AF, 17.7%; 95% confidence interval [CI], 14.3–20.9%; icddr,b AF, 39.9%; 38.0–41.8%), followed by adenovirus 40/41 (Nationwide AF, 17.9%; 95% CI: 13.9–21.9%; icddr,b AF, 16.6%; 95% CI, 14.4–19.4%) and Vibrio cholerae (Nationwide AF, 10.2%; 95% CI, 9.1–11.3%; icddr,b AF, 13.3%; 95% CI: 11.9–15.1%). Rotavirus was the leading pathogen in children &lt;5 years and was consistent across the sites (coefficient of variation = 56.3%). Adenovirus 40/41 was the second leading pathogen in both children and adults. Vibrio cholerae was the leading pathogen in individuals &gt;5 years old, but was more geographically variable (coefficient of variation = 71.5%). Other attributable pathogens included astrovirus, norovirus, Shigella, Salmonella, ETEC, sapovirus, and typical EPEC. Conclusions Rotavirus, adenovirus 40/41, and V. cholerae were the leading etiologies of infectious diarrhea requiring hospitalization in Bangladesh. Other pathogens were important in certain age groups or sites.

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