Subtype Distribution of Blastocystis spp. with DNA Barcoding and Evaluation of Diagnostic Methods

2019 ◽  
Vol 53 (3) ◽  
pp. 308-314
Author(s):  
Erdoğan MALATYALI ◽  
Hatice ERTABAKLAR ◽  
Sema ERTUĞ
Keyword(s):  
Dna Barcoding ◽  
Diagnostic Methods ◽  
Blastocystis Spp ◽  
Subtype Distribution

scholarly journals Clinical Significance of Blastocystis Sp. among Children with Leukemia

2019 ◽  
Vol 13 (2) ◽  
pp. 101-105
Author(s):  
Zainab Khalid Khalil
Keyword(s):  
Abdominal Pain ◽  
Cross Sectional Study ◽  
Diagnostic Methods ◽  
P Value ◽  
Healthy Children ◽  
Cross Sectional ◽  
Exact Test ◽  
Blastocystis Spp ◽  
Blastocystis Sp ◽  
Immunosuppressed Patients

Background: Blastocystis spp. distributes world widely and the genus Blastocystis include many subtypes that are isolated from human intestinal tract. It is considered the most common parasite detected in human being. Objectives: To evaluate the incidence of Blastocystis spp. among leukemic children, to find out its association with the presence of symptoms (diarrhea and abdominal pain), and to assess the efficacy of different staining methods in detection of Blastocystis spp.  Type of the study: cross-sectional study. Method: 103 children were enrolled in this study, 53 leukemic patients and 50 healthy controls. The study was performed during the period between January and June 2014, in Oncology department of Ibn Al-Atheer teaching hospital in Mosul city. Three consecutive samples were taken from each child and a thorough history was taken from them. The samples then treated with 3 stains, iodine, iron hematoxylin, and trichrome.The data was analyzed using minitab version 17, Fischer’s exact test, Two-proportions test, and Correlation test. The results were considered statistically significant with P-value <0.05. Results: Blastocystis spp. was detected in 18.87% of leukemic children and in 10% of healthy group. All specimens were stained by iodine, iron hematoxylin, and trichrome stains. Infection rates among patients were (9.4%, 11.3%, and 18.87% respectively) while among healthy children they were (4%, 6%, and 10% respectively). However, these differences were statistically nonsignificant. A higher infection rate was detected in the preschool children (33.3%) than school age group (6.9%). Furthermore, there was a significant association between Blastocystisspp. infection and intestinal symptoms (abdominal pain and diarrhea). Conclusion: Our study reveals a higher rate of infection with Blastocystis spp. among leukemic children than normal controls and a significant association was seen between incidence ofBlastocystisspp. infection and symptomatic children.    Those results draw attention for the significance of Blastocystis spp. infection in immunosuppressed patients and lighten the way for further studies on its pathogenicity and diagnostic methods.

scholarly journals A Simple Genotyping Method for Rapid Differentiation of Blastocystis Subtypes and Subtype Distribution of Blastocystis spp. in Thailand

Pathogens ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 38 ◽  
Author(s):  
Nittaya Srichaipon ◽  
Surang Nuchprayoon ◽  
Sarit Charuchaibovorn ◽  
Pattadon Sukkapan ◽  
Vivornpun Sanprasert
Keyword(s):  
Large Scale ◽  
Rflp Analysis ◽  
Small Subunit ◽  
Ssu Rdna ◽  
Concentration Technique ◽  
Rdna Sequences ◽  
Wide Range ◽  
Blastocystis Spp ◽  
Subtype 3 ◽  
Subtype Distribution

Blastocystis spp. is one of the most common protozoa of humans and animals worldwide. The genetic diversity of Blastocystis spp. might be associated with a wide range of symptoms. However, the prevalence of each subtype is different in each country. Until now, there is no standard method for subtyping of Blastocystis spp. We developed a sequential restriction fragment length polymorphism (RFLP) analysis for the rapid differentiation of human Blastocystis subtypes. A large-scale study was also conducted to determine the subtype distribution of Blastocystis spp. in Thailand. Stool samples were collected from 1025 school-age students in four regions of Thailand. Blastocystis infections were identified by direct smear, formalin ethyl-acetate concentration technique (FECT), Boeck and Drbohlav’s Locke-Egg-Serum (LES) medium culture, and polymerase chain reaction (PCR) of small-subunit ribosomal DNA (SSU rDNA). Subtypes of Blastocystis spp. were determined by RFLP. Phylogenetic tree of partial SSU rDNA sequences of Blastocystis spp. was constructed using the Maximum Likelihood (ML) method. Out of 1025 students, 416 (40.6%) were positive for Blastocystis spp. Using two steps of RFLP reactions, we could determine subtype one–three among these students. Subtype 3 was the most common subtype (58.72%) in Thai students, followed by subtype 1 (31.2%), and subtype 2 (10.1%). Blastocystis subtype 3 was the most prevalent in all regions of Thailand. The subtype distribution of Blastocystis spp. in Thailand was different from other countries.

Subtype distribution of Blastocystis spp. isolated from children in Eskisehir, Turkey

2017 ◽  
Vol 66 (1) ◽  
pp. 948-951 ◽  
Author(s):  
Nihal Dogan ◽  
Merve Aydin ◽  
Nazmiye Ulku Tuzemen ◽  
Ener Cagri Dinleyici ◽  
Ilkiz Oguz ◽  
...  
Keyword(s):  
Blastocystis Spp ◽  
Subtype Distribution

The Physician’s Task and the Problem of Documentation

1964 ◽  
Vol 03 (01) ◽  
pp. 11-19 ◽  
Author(s):  
A. Proppe
Keyword(s):  
Statistical Evaluation ◽  
Age Groups ◽  
Diagnostic Methods ◽  
Early Age ◽  
Case Histories ◽  
Lupus Vulgaris ◽  
Pathological Conditions ◽  
Clinical Methods ◽  
Corpus Hippocraticum ◽  
High Degree

SummaryCase histories suitable for statistical evaluation can be found even as far back as in the Corpus Hippocraticum. Such simple data as the patient’s age, body weight, size, the date of menarche, etc. are practically always included in the case records, and it is demonstrated that, when such data are recorded in a system of documentation suitable for mechanical sorting, it may enable us to draw conclusions of very great importance. Mechanical registration methods have revealed that, in the determination and recording of data as hitherto carried out. there has been a surprisingly large number of errors and a high degree of unreliability. This view has a considerable influence on modern clinical methods; it renders a more democratic relation between physician and patient necessary and makes clear the need for measures to enhance the reliability of diagnosis and treatment of pathological conditions. The author illustrates this view with reference to the mechanical falsification of the thesis of the proneness of early age groups to lupus vulgaris, furthermore with reference to the mechanical rationalization of modern routine diagnostic methods, to the constant surveillance of adverse effects on public health and to the protection against allergic reactions with the aid of recording systems of personal allergy and intolerance data with mechanical sorting and computer techniques.

Post Discharge Clinically Overt Venous Thromboembolism in Orthopaedic Surgery Patients with Negative Venography -an Overview Analysis

1996 ◽  
Vol 76 (06) ◽  
pp. 0887-0892 ◽  
Author(s):  
Serena Ricotta ◽  
Alfonso lorio ◽  
Pasquale Parise ◽  
Giuseppe G Nenci ◽  
Giancarlo Agnelli
Keyword(s):  
Venous Thromboembolism ◽  
Orthopaedic Surgery ◽  
Diagnostic Methods ◽  
Future Research ◽  
Post Discharge ◽  
Pharmacological Prophylaxis ◽  
Vein Thrombosis ◽  
Overview Analysis ◽  
Major Orthopaedic Surgery

SummaryA high incidence of post-discharge venous thromboembolism in orthopaedic surgery patients has been recently reported drawing further attention to the unresolved issue of the optimal duration of the pharmacological prophylaxis. We performed an overview analysis in order to evaluate the incidence of late occurring clinically overt venous thromboembolism in major orthopaedic surgery patients discharged from the hospital with a negative venography and without further pharmacological prophylaxis. We selected the studies published from January 1974 to December 1995 on the prophylaxis of venous thromboembolism after major orthopaedic surgery fulfilling the following criteria: 1) adoption of pharmacological prophylaxis, 2) performing of a bilateral venography before discharge, 3) interruption of pharmacological prophylaxis at discharge in patients with negative venography, and 4) post-discharge follow-up of the patients for at least four weeks. Out of 31 identified studies, 13 fulfilled the overview criteria. The total number of evaluated patients was 4120. An adequate venography was obtained in 3469 patients (84.1%). In the 2361 patients with negative venography (68.1%), 30 episodes of symptomatic venous thromboembolism after hospital discharge were reported with a resulting cumulative incidence of 1.27% (95% C.I. 0.82-1.72) and a weighted mean incidence of 1.52% (95% C.I. 1.05-1.95). Six cases of pulmonary embolism were reported. Our overview showed a low incidence of clinically overt venous thromboembolism at follow-up in major orthopaedic surgery patients discharged with negative venography. Extending pharmacological prophylaxis in these patients does not appear to be justified. Venous thrombi leading to hospital re-admission are likely to be present but asymptomatic at the time of discharge. Future research should be directed toward improving the accuracy of non invasive diagnostic methods in order to replace venography in the screening of asymptomatic post-operative deep vein thrombosis.

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