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Jassim ZN, Shakir MJ, Al-Zuheiry MS. MOLECULAR STUDY OF BLASTOCYSTIS HOMINIS ISOLATED FROM DIFFERENT REGIONS OF DIYALA GOVERNORATE. WIADOMOSCI LEKARSKIE (WARSAW, POLAND : 1960) 2023; 75:2901-2906. [PMID: 36723301 DOI: 10.36740/wlek202212102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The aim: To detect the infection rate of Blastocystis hominis in children less than 10 years old with diarrhea in Diyalaby polymerase chain reaction (PCR) method, to determine the subtype of Blastocystis hominis by sequencing the product of the positive result, and to determine the association between Blastocystis hominis infection and different factors such as gender, age, the level of mother education and the presence or absence animals in their houses. PATIENTS AND METHODS Materials and methods: A cross-sectional study was conducted on children with diarrhea at Al-Batool Teaching Hospital in Diyala governorate, during the period from November 2020 to April 2021, a total of 100 children 55 males and 45 females, then, stool samples were collected and examined by conventional polymerase chain reaction. RESULTS Results: The rate of infection with the parasite Blastocystis hominis was 8%, 8 out of 100. The infection was higher among females 62.5% than to males 37.5%, while the positive result was higher in the age group less than two years 75%, the highest percentage occur with patient whose mothers were incomplete primary and primary education was reached 37.5% and 25%; respectively and the study showed the highest percentage was with those who kept animals at homes was 75%. CONCLUSION Conclusions: According to the genetic analysis of the sequence of eight samples that were positive for Blastocystis hominis parasite using the conventional polymerase chain reaction and they were back to the subtypes 3.
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Affiliation(s)
- Zainab Naseef Jassim
- DEPARTMENT OF MICROBIOLOGY, COLLEGE OF MEDICINE, UNIVERSITY OF DIYALA, BAQUBAH, IRAQ
| | - Mohammed J Shakir
- DEPARTMENT OF MICROBIOLOGY, COLLEGE OF MEDICINE, UNIVERSITY OF DIYALA, BAQUBAH, IRAQ
| | - Mehdi Sh Al-Zuheiry
- DEPARTMENT OF PEDIATRICS, COLLEGE OF MEDICINE, UNIVERSITY OF DIYALA, BAQUBAH, IRAQ
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Maleki B, Olfatifar M, Dodangeh S, Ahmadi N, Gorgipour M, Javanmard E. Subtype distribution of Blastocystis sp. isolated from humans in Iran: a systematic review and meta-analysis. GASTROENTEROLOGY AND HEPATOLOGY FROM BED TO BENCH 2022; 15:294-310. [PMID: 36762220 PMCID: PMC9876770 DOI: 10.22037/ghfbb.v15i4.2475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 07/13/2022] [Indexed: 02/11/2023]
Abstract
Aim This systematic review and meta-analysis evaluated the subtyped Blastocystis sp. isolated from humans in Iran. Background Blastocystis sp. is an anaerobic intestinal protozoan that infects humans as well as domestic and wild animals, i.e. mammals, amphibians, reptiles, and arthropods. Methods A comprehensive search for papers published before April 2022 was undertaken utilizing English and Persian databases. The following MeSH keywords were used in the electronic search: (Blastocystis sp.) AND (molecular OR subtype) AND (prevalence OR epidemiology) AND Iran. The quality of the included studies was evaluated. Thereafter, a random-effects meta-analysis was conducted to estimate the pooled prevalence and odds ratios regarding the included studies. Results A total of 32 studies comprised of five case-control studies and 27 cross-sectional studies met the eligibility criteria. The overall pooled prevalence of subtyped Blastocystis sp. in Iran was estimated to be 10% (95% confidence interval: 6 to 15%). Eight subtypes of Blastocystis sp. (ST1- ST7 and ST9) were identified in our study, of which ST3 was the most common subtype (0.04); 0.02-0.07). The difference in subtypes between two case and control groups in reported studies was not significant, but the odds ratio of infection by ST3 (0.98; 95% CI, 0.30 to 3.20) was higher in cases. Conclusion The current systematic review showed that with the exception of ST8 and ST12, all human Blastocystis sp. subtypes reported in the world are found in different parts of Iran.
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Affiliation(s)
- Bahman Maleki
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran Iran
| | - Meysam Olfatifar
- Gastroenterology and Hepatology Diseases Research Center, Qom University of Medical Sciences, Qom, Iran
| | - Samira Dodangeh
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Nayebali Ahmadi
- Proteomics Research Center, Department of Medical Lab Technology, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Gorgipour
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran Iran
| | - Ehsan Javanmard
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran Iran
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Rauff-Adedotun AA, Meor Termizi FH, Shaari N, Lee IL. The Coexistence of Blastocystis spp. in Humans, Animals and Environmental Sources from 2010-2021 in Asia. BIOLOGY 2021; 10:990. [PMID: 34681089 PMCID: PMC8533399 DOI: 10.3390/biology10100990] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 12/12/2022]
Abstract
Blastocystis spp. are controversial unicellular protists that inhabit the gastrointestinal tract of humans and a wide range of animals worldwide. This review provides an overview of the prevalence and distribution of Blastocystis spp. and their subtypes throughout Asia. Research articles reporting on the presence of Blastocystis spp. in locations within Asia, between 1 January 2010, and 10 May 2021, were obtained from Scopus, PubMed, and Google Scholar. In 427 articles, the prevalence of Blastocystis spp. in 31 countries within the last decade was revealed. Isolates were found in humans, various mammals, birds, reptiles, insects, water sources, vegetables, and ambient air. Prevalence of Blastocystis spp. varied widely across host categories. Subtypes identified throughout Asia were STs 1-14, and ST18-22 (novel subtypes). ST1, ST2, ST3, ST4 were the most frequently isolated in humans; ST5 in pigs; ST10 and ST14 in goats, sheep, and cattle; and ST6 and ST7 in chickens. ST1 and ST3 were most common in water samples. ST1, ST2, ST3, ST4, ST5 and ST6 were shared by humans, animals, and water sources. There is a growing interest in the study of Blastocystis spp. and their subtypes in Asia. Due to the isolation of Blastocystis spp. from biotic and abiotic sources in Asia, the application of the One Health (OH) approach to the study of Blastocystis spp. is proposed for improved perception of this organism.
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Affiliation(s)
| | - Farah Haziqah Meor Termizi
- School of Biological Sciences, Universiti Sains Malaysia, Kuala Lumpur 11800, Malaysia; (A.A.R.-A.); (F.H.M.T.)
| | - Nurshafarina Shaari
- Kulliyyah of Medicine & Health Sciences, Universiti Islam Antarabangsa Sultan Abdul Halim Mu’adzam Shah, Kuala Ketil 09300, Malaysia;
| | - Ii Li Lee
- Kulliyyah of Medicine & Health Sciences, Universiti Islam Antarabangsa Sultan Abdul Halim Mu’adzam Shah, Kuala Ketil 09300, Malaysia;
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Comparative molecular prevalence and subtypes distribution of Blastocystis sp. a potentially zoonotic infection isolated from symptomatic and asymptomatic patients in Iran: A systematic review and meta-analysis. Acta Parasitol 2021; 66:745-759. [PMID: 33686524 DOI: 10.1007/s11686-021-00360-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 02/24/2021] [Indexed: 01/09/2023]
Abstract
PURPOSE The present systematic review and meta-analysis was aimed to assess the weighted molecular prevalence of Blastocystis sp. in humans along with the comparative molecular prevalence and subtypes distribution of Blastocystis isolated from symptomatic and asymptomatic patients in Iran. METHODS International electronic databases including Medline/PubMed, ProQuest, Scopus, Embase, and Google Scholar were explored until 4th October 2020. Heterogeneity index was evaluated among studies using Cochran's Q test and I2 index. Finally, 23 eligible studies were qualified to be included in this review. RESULTS The pooled molecular prevalence of Blastocystis sp. in Iran was reported 15.2% (95% CI 11.5-19.7). In addition, the molecular prevalence based on PCR-sequencing and STS primers was reported 12.5% (95% CI 8.6-17.7) and 19.8% (95% CI 13.1-28.8), respectively. Interestingly, there was a considerably higher prevalence among asymptomatic patients [25.1% (95% CI 20.8-30.0)] in comparison to symptomatic ones [21.0% (95% CI 15.9-27.2)]. In addition, the frequency of Blastocystis ST1, ST2, and ST3 from positive samples in symptomatic patients was 19.7%, 35.1%, and 47.4%, respectively. In addition, the prevalence of Blastocystis ST1, ST2, and ST3 from positive samples in asymptomatic patients was 27.1%, 26.8%, and 37.8%, respectively. The results obtained in Iran showed that Blastocystis is more common in asymptomatic patients compared to patients having clinical symptoms. Of note, ST3, as the most common subtype causing clinical symptoms, was the most prevalent reported subtype among both symptomatic and asymptomatic patients in the country. CONCLUSIONS Hence, the pathogenicity of the Blastocystis parasite is not subtype-specific and appears to be related to a variety of risk factors. Still the Blastocystis epidemiology is open to question and more large-scale studies should be performed on this aspect.
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Investigation of Isolated Blastocystis Subtypes from Cancer Patients in Turkey. Acta Parasitol 2021; 66:584-592. [PMID: 33387270 DOI: 10.1007/s11686-020-00322-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 11/28/2020] [Indexed: 01/03/2023]
Abstract
PURPOSE It is not clear that Blastocystis remains without damage to the digestive tract or has a pathogenic effect in relation to subtypes in immunocompromised people, such as cancer patients. The present study aimed to investigate the frequency and subtype distribution of Blastocystis in cancer patients who were followed-up and treated in the Oncology clinic of Firat University Hospital and to determine the clinical signs of infected sufferers. METHODS 201 patients aged ≥ 18 with a diagnosis of cancer were enrolled in this cross-sectional study. Patients' stool samples were examined between September 2017 and August 2019 by native-Lugol, trichrome staining. Microscopy-positive stool samples were subjected to DNA isolation and subtyped by Sequence Tagged Site (STS)-PCR analysis. The symptoms and demographic characteristics of the patients were also evaluated. RESULTS Totally, 29 (14.4%) samples were positive for Blastocystis after all methods. 15 (51.7%) out of 29 samples were successfully subtyped by the sequenced-tagged site(STS)-PCR, while 14 (48.3%) could not be typed. Three subtypes of Blastocystis were detected: ST3 (40%), ST2 (33%), ST1 (20%), and one mixed infections with ST1/ST2 (6%). There was no statistically significant difference in terms of clinical findings and demographic characteristics. CONCLUSION The outcomes of our study promote the idea that Blastocystis could be an asymptomatic and harmless commensal organism. However, more comprehensive molecular and clinical studies are needed to fully determine the pathogenicity and epidemiology of Blastocystis in cancer patients.
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Belkessa S, Ait-Salem E, Laatamna A, Houali K, Sönksen UW, Hakem A, Bouchene Z, Ghalmi F, Stensvold CR. Prevalence and Clinical Manifestations of Giardia intestinalis and Other Intestinal Parasites in Children and Adults in Algeria. Am J Trop Med Hyg 2021; 104:910-916. [PMID: 33534771 DOI: 10.4269/ajtmh.20-0187] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 09/06/2020] [Indexed: 11/07/2022] Open
Abstract
Giardia intestinalis is one of the most common causes of parasite-induced diarrhea, abdominal pain, flatulence, and malabsorption. Yet, data on the epidemiology of G. intestinalis infections in North Africa are limited. The purpose of this study was to carry out a retrospective survey on the level of intestinal parasitism with a particular emphasis on G. intestinalis in children and adults in Algiers, Algeria. A total of 2,054 individuals from outpatient clinics or hospitalized at Beni-Messous University Hospital of Algiers undergoing stool microscopy for ova and parasites were included. The overall parasite infection rate was 28%. In the 567 parasite-positive samples, Blastocystis was found most frequently (57.3%), followed in frequency by Endolimax nana (41.0%), Entamoeba histolytica/dispar (19.6%), G. intestinalis (17.1%), Entamoeba coli (13.9%), Chilomastix mesnili (1.0%), Iodamoeba bütschlii (0.7%), Entamoeba hartmanni (0.5%), and Cryptosporidium spp. (0.2%). Intestinal parasites were generally more common in adults than in children, except for Giardia, which was more common in children (P = 0.0001). Giardia infection was independent of gender (P = 0.94). Compared with other intestinal parasitic infections, clinical manifestations, such as abdominal pain (P = 0.28) and diarrhea (P = 0.82), were found not to be significantly linked to Giardia infection. In conclusion, G. intestinalis is common in individuals referred to the University Hospital of Beni-Messous with digestive symptoms, particularly so in children. However, in our study, intestinal symptoms appeared not to be more linked to Giardia than to other intestinal parasites.
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Affiliation(s)
- Salem Belkessa
- 1Department of Biochemistry and Microbiology, Laboratory of Analytical Biochemistry and Biotechnology (LABAB), Faculty of Biological and Agronomic Sciences, Mouloud Mammeri University of Tizi Ouzou, Tizi Ouzou, Algeria.,2Department of Natural and Life Sciences, Faculty of Exact Sciences and Natural and Life Sciences, Mohamed Khider University of Biskra, Biskra, Algeria.,3Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | - Elhosseyn Ait-Salem
- 1Department of Biochemistry and Microbiology, Laboratory of Analytical Biochemistry and Biotechnology (LABAB), Faculty of Biological and Agronomic Sciences, Mouloud Mammeri University of Tizi Ouzou, Tizi Ouzou, Algeria
| | - AbdElkarim Laatamna
- 4Laboratory of Exploration and Valorisation of Steppe Ecosystems, Faculty of Nature and Life Sciences, University of Djelfa, Djelfa, Algeria
| | - Karim Houali
- 1Department of Biochemistry and Microbiology, Laboratory of Analytical Biochemistry and Biotechnology (LABAB), Faculty of Biological and Agronomic Sciences, Mouloud Mammeri University of Tizi Ouzou, Tizi Ouzou, Algeria
| | - Ute Wolff Sönksen
- 3Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | - Ahcene Hakem
- 4Laboratory of Exploration and Valorisation of Steppe Ecosystems, Faculty of Nature and Life Sciences, University of Djelfa, Djelfa, Algeria.,5Center Research in Agropastoralism, Djelfa, Algeria
| | - Zahida Bouchene
- 6Faculty of Medicine, University of Algiers, Algiers, Algeria
| | - Farida Ghalmi
- 7Higher National Veterinary School of Algiers, Algiers, Algeria
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Haghighi L, Talebnia SE, Mikaeili F, Asgari Q, Gholizadeh F, Zomorodian K. Prevalence and subtype identification of Blastocystis isolated from human in Shiraz city, southern Iran. CLINICAL EPIDEMIOLOGY AND GLOBAL HEALTH 2020. [DOI: 10.1016/j.cegh.2020.02.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Sharifi Y, Abbasi F, Shahabi S, Zaraei A, Mikaeili F, Sarkari B. Comparative genotyping of Blastocystis infecting cattle and human in the south of Iran. Comp Immunol Microbiol Infect Dis 2020; 72:101529. [PMID: 32795717 DOI: 10.1016/j.cimid.2020.101529] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 07/22/2020] [Accepted: 08/04/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Blastocystis is a unicellular protozoan and one of the most common parasites found in humans and many animals' intestinal tract. The present study aimed to compare the genotypes of Blastocystis infecting cattle and humans in the south of Iran. METHODS A total of 100 human stool samples and 75 cattle stool samples were microscopically examined for Blastocystis infection. DNA was extracted from thirty-eight microscopically positive samples (13 humans and 25 cattle). PCR was performed on positive samples targeting the Blastocystis-specific SSU rDNA gene. PCR products of eight humans and eleven cattle samples were sequenced and compared with available reference sequences in GenBank by BLAST queries. Genetic diversity was measured for Blastocystis subtypes in human and cattle, based on haplotype and nucleotide diversities. RESULTS The PCR detected Blastocystis in ten humans and twenty-four cattle samples. Blastocystis subtypes 1, 2, and 6 were found in humans whereas subtypes 5 and 10 were found in cattle. Subtype (ST) 2 was the most predominant subtypes in humans whereas, in cattle specimens, the ST5 was the most dominant subtype. Based on the Blastocystis sequences of SSU rDNA, 68 sites were polymorphic and 49 sites were parsimony informative, resulting in the identification of 15 haplotypes, 10 haplotypes in the cattle and 5 in humans. No haplotype was shared between cattle and human parasites. CONCLUSION Human-derived Blastocystis subtypes were different from cattle subtypes in southern Iran. Nevertheless, subtype 5 in cattle can be a risk factor for human infection.
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Affiliation(s)
- Yosef Sharifi
- Department of Parasitology and Mycology, School of Medicine Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ferdos Abbasi
- Department of Parasitology and Mycology, School of Medicine Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeed Shahabi
- Department of Parasitology and Mycology, School of Medicine Shiraz University of Medical Sciences, Shiraz, Iran
| | - Afshin Zaraei
- Department of Parasitology and Mycology, School of Medicine Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fattaneh Mikaeili
- Department of Parasitology and Mycology, School of Medicine Shiraz University of Medical Sciences, Shiraz, Iran
| | - Bahador Sarkari
- Department of Parasitology and Mycology, School of Medicine Shiraz University of Medical Sciences, Shiraz, Iran; Basic Sciences in Infectious Diseases Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
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Seroprevalence of Neospora caninum Infection in Dog Population Worldwide: A Systematic Review and Meta-analysis. Acta Parasitol 2020; 65:273-290. [PMID: 31919799 DOI: 10.2478/s11686-019-00163-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 12/18/2019] [Indexed: 11/20/2022]
Abstract
PURPOSE Neospora caninum is an obligate intracellular apicomplexan protozoan that causes neurological disorders in dogs. This systematic review and meta-analysis targeted at evaluating the worldwide seroprevalence rate of N. caninum in dogs. METHODS Five electronic databases, including PubMed, Scopus, Web of Science, Science Direct, and Google Scholar, until December 2018 were thoroughly searched for relevant English language articles. Papers were selected based on inclusion criteria. Data were analyzed in StatsDirect statistical software (version 2.7.9). RESULTS The searching process yielded a total number of 156 papers. The total prevalence (95% confidence intervals) of N. caninum infection in dog population worldwide was measured as 17.14% in data analyses (15.25-19.10). In addition, a significant association was also detected between neosporosis infection in dogs and continent, country, year, WHO regions, sample size and diagnostic method (P < 0.001). CONCLUSION Dogs are a matter of concern to public health officials as a source of N. caninum infection. Therefore, it is of paramount importance to provide comprehensive data and systematically analyze the prevalence of N. caninum infection in dogs. Accordingly, it is recommended that researchers carry out further studies to prevent and control neosporosis among dog population worldwide.
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