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Asghari A, Yousefi A, Badali R, Mohammadi MR, Shamsi L, Maleki F, Bahrami AM. First molecular subtyping and zoonotic significance of Blastocystis sp. in Dromedary (C. dromedarius) and Bactrian (C. bactrianus) camels in Iran: A molecular epidemiology and review of available literature. Vet Med Sci 2024; 10:e1442. [PMID: 38578271 PMCID: PMC10996919 DOI: 10.1002/vms3.1442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 02/23/2024] [Accepted: 03/24/2024] [Indexed: 04/06/2024] Open
Abstract
BACKGROUND Blastocystis sp. is a zoonotic protozoan parasite, and there is limited information about its molecular prevalence and subtypes (STs) distribution in camels globally, especially in Iran. OBJECTIVES This study aimed to examine the prevalence, STs distribution, and zoonotic potential of Blastocystis sp. in one-humped and two-humped camels in Ardabil province, northwestern Iran. METHODS A PCR-sequencing tool using the SSU rRNA gene was employed to examine the occurrence and genetic variation of Blastocystis sp. in 150 faecal samples from Bactrian (Camelus bactrianus, 50 samples) and Dromedary (Camelus dromedarius, 100 samples) camels in Ardabil province. RESULTS The overall prevalence of Blastocystis sp. in camels was determined to be 12% (18/150) through microscopy and PCR analyses. Phylogenetically, this study identified three distinct zoonotic STs: ST7, ST10, and ST14. ST10 was the most prevalent, comprising 50% (9/18) of the isolated STs from camels. ST14 closely followed with 38.9% (7/18), while ST7 made up 11.1% (2/18) of the total STs. In brief, ST10, ST14, and ST7 represented 50% (7/14), 35.7% (5/14), and 14.3% (2/14) of the Blastocystis-positive cases in one-humped camels, respectively. Further, each of the ST10 and ST14 accounted for 50% (2/4) of the Blastocystis-positive samples in two-humped camels. An analysis of the available data reveals that out of the 37-44 identified Blastocystis STs, 15 (ST1-ST7, ST10, ST14, ST15, ST21, ST24, ST25, ST26, and ST30) have been reported in camels. The predominant STs observed are ST10 and ST14. Furthermore, among the 15 zoonotic STs (ST1-ST10, ST12-ST14, ST16, and ST23) of Blastocystis reported thus far, nine zoonotic STs (ST1-ST7, ST10, and ST14) have been found in camels. CONCLUSIONS These findings indicate that camels serve as a proper reservoir for a diverse array of Blastocystis STs and thereby can play a significant role in the transmission of this protozoan infection to humans, animals, and water reservoirs.
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Affiliation(s)
- Ali Asghari
- Zoonoses Research CenterArdabil University of Medical SciencesArdabilIran
| | | | - Roya Badali
- Department of Pharmaceutical BiotechnologyUniversity of PaviaPaviaItaly
| | | | - Laya Shamsi
- Faculty of Veterinary MedicineDepartment of Pathobiology, Urmia UniversityUrmiaIran
| | - Farajolah Maleki
- Clinical Research Development UnitShahid Mostafa Khomeini Hospital, Ilam University of Medical SciencesIlamIran
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Asghari A, Mahdavi F, Yousefi A, Shamsi L, Badali R, Mohammadi MR, Irannejad H, Mohammadi-Ghalehbin B, Shahabi S, Asgari Q, Motazedian MH, Bastaminejad S. Development of New PCR Protocols to Detect Genetic Diversity in the Metronidazole Metabolism Genes in Susceptible and Refractory Clinical Samples of Giardia duodenalis. Acta Parasitol 2024:10.1007/s11686-024-00828-9. [PMID: 38499920 DOI: 10.1007/s11686-024-00828-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 02/05/2024] [Indexed: 03/20/2024]
Abstract
PURPOSE Investigating the genetic variation in thioredoxin reductase (TrxR) and nitroreductase (NR) genes in both treatment-resistant and -sensitive Giardia duodenalis isolates can provide valuable information in identifying potential markers of resistance to metronidazole. The rapid increase in metronidazole treatment failures suggests the presence of genetic resistance mechanisms. By analyzing these genes, researchers can gain insights into the efficacy of metronidazole against G. duodenalis and potentially develop alternative treatment strategies. In this regard, four G. duodenalis isolates (two clinically sensitive and two clinically resistant to metronidazole) were collected from various hospitals of Shiraz, southwestern Iran. METHODS Parasitological methods including sucrose flotation and microscopy were employed for the primary confirmation of G. duodenalis cysts in stool samples. Microscopy-positive samples were approved by SSU-PCR amplification of the parasite DNA. All four positive G. duodenalis specimens at SSU-PCR were afterward analyzed utilizing designed primers based on important metronidazole metabolism genes including TrxR, NR1, and NR2. RESULTS Unlike TrxR gene, the results of NR1 and NR2 genes showed that there are non-synonymous variations between sequences of treatment-sensitive and -resistant samples compared to reference sequences. Furthermore, the outcomes of molecular docking revealed that there is an interaction between the protein sequence and spatial shape of treatment-resistant samples and metronidazole in the position of serine amino acid based on the NR1 gene. CONCLUSION This issue can be one of the possible factors involved in the resistance of Giardia parasites to metronidazole. To reach more accurate results, a large sample size along with simulation and advanced molecular dynamics investigations are needed.
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Affiliation(s)
- Ali Asghari
- Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farzad Mahdavi
- Department of Medical Parasitology and Mycology, School of Medicine, Guilan University of Medical Sciences, Rasht, Gilan, Iran
| | - Amirhosein Yousefi
- Department of Pharmaceutical Biotechnology, University of Pavia, Pavia, Italy
| | - Laya Shamsi
- Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Roya Badali
- Department of Pharmaceutical Biotechnology, University of Pavia, Pavia, Italy
| | - Mohammad Reza Mohammadi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hamid Irannejad
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | | | - Saeed Shahabi
- Department of Biology and Control of Disease Vectors, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Qasem Asgari
- Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Saiyad Bastaminejad
- Department of Genetics and Molecular Medicine, School of ParaMedicine, Ilam University of Medical Sciences, Ilam, Iran.
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Asghari A, Yousefi A, Mohammadi MR, Badali R, Shamsi L, Köseoğlu AE, Abbaszadeh A, Shams M, Mohammadi-Ghalehbin B. Comparative molecular epidemiology, subtype distribution, and zoonotic potential of Blastocystis sp. in Equus animals (horses, donkeys, and mules) in northwestern Iran. Comp Immunol Microbiol Infect Dis 2024; 106:102124. [PMID: 38262257 DOI: 10.1016/j.cimid.2024.102124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/31/2023] [Accepted: 01/03/2024] [Indexed: 01/25/2024]
Abstract
A total of 500 fecal samples were collected from Equus animals in six different cities (Ardabil, Namin, Nir, Meshginshahr, Germi, and Khalkhal) of Ardabil Province, northwestern Iran, with 200 samples from horses, 200 from donkeys, and 100 from mules. Of the horse samples, 100 were from racing horses under special monitoring and care, while the remaining 100 were from non-racing horses, including those used for herding or in rural areas. All fecal samples were examined for the presence of Blastocystis sp. using PCR amplification of the SSU rRNA gene's barcode region after DNA extraction. The molecular prevalence of Blastocystis infection in Equus animals was 7.6% (38/500). Blastocystis was more common in horses [11.5% (23/200)] than in donkeys [5.5% (11/200)] and mules [4% (4/100)] (P > 0.05). Compared to racing horses [3% (3/100)], non-racing/rural horses [20% (20/100)] exhibited a substantially higher prevalence of Blastocystis (P < 0.05). The prevalence of Blastocystis in diarrheal samples and younger animals was remarkably higher than in formed samples and older animals, respectively (P < 0.05). No significant difference in Blastocystis infection prevalence was found between the genders of examined animals (P > 0.05). In Equus animals, 38 Blastocystis isolates included eight STs: ST10 [31.6% (12/38)], ST1 [21.1% (8/38)], ST2 [15.8% (6/38)], ST3 [10.5% (4/38)], ST4 [7.9% (3/38)], ST7 [5.2% (2/38)], ST14 [5.2% (2/38)], and ST6 [2.6% (1/38)]. These results suggest that Equus animals act as a proper reservoir for numerous Blastocystis STs, consequently playing a crucial part in the spread of this protozoan infection to humans, animals, and water reservoirs.
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Affiliation(s)
- Ali Asghari
- Zoonoses Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Amirhosein Yousefi
- Department of Pharmaceutical Biotechnology, University of Pavia, Pavia, Italy
| | - Mohammad Reza Mohammadi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Roya Badali
- Department of Pharmaceutical Biotechnology, University of Pavia, Pavia, Italy
| | - Laya Shamsi
- Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Ahmet Efe Köseoğlu
- Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Biruni University, 34010, Istanbul, Turkey
| | - Amir Abbaszadeh
- Zoonotic Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Morteza Shams
- Zoonotic Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran
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Yousefi A, Jafari H, Khorsandi M, Faezmehr A. Assessment of a low-cost commercial CCD for use in X-ray imaging. Appl Radiat Isot 2022; 190:110476. [PMID: 36162321 DOI: 10.1016/j.apradiso.2022.110476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 09/11/2022] [Accepted: 09/18/2022] [Indexed: 11/25/2022]
Abstract
Charged coupled device (CCD) is an imaging sensor that can be used as a digital radiation position-sensitive detector in space applications, industrial and medical imaging, etc. Commonly, the CCDs used for X-ray imaging are expensive and needed more complicated control, electronic boards. In this work, a simple and low-cost commercial CCD model (TCD1304AP) has been used to implement X-ray imaging. Moreover, a CsI(Tl) scintillation crystal with different thicknesses of 2 and 5 mm has been utilized as an X-ray to light photon converter. The driving and data acquisition boards have been designed in straightforward implementation, which can be easily performed. Also, the appropriate integration times have been set to 10 ms and 420 ms for use in cases with and without scintillation crystals respectively. The results show that this sensor has an admissible response to X-ray imaging. There is about a below 8.3% relative difference between the actual and attained dimensions from images at the direct method. However, this difference increases up to 17.7% for the indirect method due to the optical propagation in the scintillator. Furthermore, the experiment for the determination of the PSF distribution indicates that the spatial resolution of this X-ray imaging is 2% in the direct method and 3% with a 2 mm CsI(Tl) scintillator.
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Affiliation(s)
- A Yousefi
- Radiation Application Department, Shahid Beheshti University, Tehran, Iran
| | - H Jafari
- Radiation Application Department, Shahid Beheshti University, Tehran, Iran.
| | - M Khorsandi
- Radiation Application Department, Shahid Beheshti University, Tehran, Iran
| | - A Faezmehr
- Radiation Application Department, Shahid Beheshti University, Tehran, Iran
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Shams M, Shamsi L, Yousefi A, Sadrebazzaz A, Asghari A, Mohammadi-Ghalehbin B, Shahabi S, Hatam G. Current global status, subtype distribution and zoonotic significance of Blastocystis in dogs and cats: a systematic review and meta-analysis. Parasit Vectors 2022; 15:225. [PMID: 35733146 PMCID: PMC9215001 DOI: 10.1186/s13071-022-05351-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 06/01/2022] [Indexed: 11/29/2022] Open
Abstract
Background Blastocystis is a common intestinal protozoa found in animal and human fecal samples, with over 1 billion individuals infected worldwide. Since domestication, dogs and cats have had a close bond with humans. However, their close proximity poses a potential health risk since they may harbor several zoonotic agents. A global estimate of Blastocystis infection and subtype (ST) distribution in dogs and cats would therefore be of great health importance to humans. Methods We performed a comprehensive systematic search of four English-language databases (PubMed, Scopus, Google Scholar, Web of Science) for relevant articles up to 8 November 2021. The random-effects model was used to make pooled estimates with confidence intervals (CIs). Results In total, we identified 49 publications that met our inclusion criteria and subsequently analyzed the 65 datasets in these articles, of which 23 and 42 datasets were on cats and dogs, respectively. Among the 2934 cats included in the 23 datasets, which involved 16 countries, the prevalence rate of Blastocystis infection was 9.3% (95% CI 5.3–15.9%). The prevalence of Blastocystis infection was slightly lower [7%, 95% CI 4.7–10.4%) among the 7946 dogs included in the 42 datasets, involving 23 countries. The sensitivity analysis showed that no remarkable variation in the estimates upon the stepwise removal of each dataset. Higher ST diversity was found among the examined dogs (ST1-8, ST10, ST23, ST24) than among cats (ST1-4, ST10, ST14). Among dogs, ST3 was the most frequent ST (41.3%), followed by ST2 (39.3%), ST1 (30.9%), ST4 (13.4%), ST8 (12.7%), ST10 (11%) and ST5 (8.1%). Also among dogs, each of ST6, ST7, ST23 and ST24 was observed in only one study. Of the ST found in the cats examined, ST4 (29.5%), followed by ST10 (22.5%), ST1 (19.8%) and ST3 (17.6%) were the most common. A single study also reported the presence of both ST2 and ST14 in cats. With respect to zoonotic Blastocystis STs (ST1–ST9 and ST12), eight were reported from dogs (ST1-ST8) and four were isolated from cats (ST1–ST4), showing the implication of dog and cats in zoonotic transmission. Conclusions Taken together, our results show that elucidation of the true epidemiology and ST distribution of Blastocystis in dogs and cats demands more comprehensive studies, particularly in the negelected regions of the world. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-022-05351-2.
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Affiliation(s)
- Morteza Shams
- Zoonotic Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Laya Shamsi
- Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Amirhosein Yousefi
- Department of Medical Lab Science, School of Medicine, Ardabil Branch, Islamic Azad University, Ardabil, Iran
| | - Alireza Sadrebazzaz
- Education and Extension Organization, Razi Vaccine & Serum Research Institute, Agricultural Research, Mashhad, Iran
| | - Ali Asghari
- Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Saeed Shahabi
- Department of Biology and Control of Disease Vectors, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Gholamreza Hatam
- Basic Sciences in Infectious Diseases Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
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Yousefi A, Nasehi S, Arshi S, Nabavi M, Bemanian MH, Shokri S, Seif F, Khoshmirsafa M, Saeedi Y, Sadeghian M, Talachian E, Rajabian B, Mahjoub F, Fallahpour M. Assessment of IgE- and cell-mediated immunity in pediatric patients with eosinophilic esophagitis. Eur Ann Allergy Clin Immunol 2021; 53:86-90. [PMID: 32496031 DOI: 10.23822/eurannaci.1764-1489.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Summary Eosinophilic esophagitis (EoE) is a chronic allergen/immune-mediated disease leading to esophageal dysfunction. Food allergens play critical roles in the pathogenesis and treatment of EoE via different mechanisms. This study aimed to present the characteristics and evaluate the ability of skin prick test (SPT), skin prick to prick test (SPP) (IgE-mediated), and atopic patch test (APT) (cell-mediated) individually or simultaneously to diagnose food allergy in patients suffering from EoE. This prospective study was conducted on 58 patients with EoE. Seven patients (12.1%) were positive to only one, 3 (5.2%) were simultaneously positive to two, and 32 (55.2%) were simultaneously positive to three tests. Single and double sensitizations were totally 10.4% in IgE-mediated reactions, while 36.5% in cell-mediated reactions. In contrast, poly sensitization (> 2 allergens) was 51.7% in IgE-mediated tests and 20.7% in the cell-mediated test. Multiple sensitization findings showed egg white, milk, yolk, and soy were the most frequent allergens. Our findings indicate that EoE is early onset and associated with multiple food sensitizations, particularly via IgE-mediated mechanisms. These immune-mediated responses encompass both IgE-mediated (SPT and SPP) and cell-mediated (APT) reactions simultaneously not individually. Therefore, employing multiple assays may strengthen the diagnosis of food sensitization.
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Affiliation(s)
- A Yousefi
- Department of Pediatric Gastroenterology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - S Nasehi
- Department of Pediatric Gastroenterology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - S Arshi
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - M Nabavi
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - M H Bemanian
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - S Shokri
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - F Seif
- Department of Immunology and Allergy, Academic Center for Education, Culture, and Research (ACECR), Tehran, Iran
| | - M Khoshmirsafa
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Y Saeedi
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - M Sadeghian
- Department of Pediatric Gastroenterology, Children Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - E Talachian
- Division of Pediatric Gastroenterology, Ali-Asghar Children's Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - B Rajabian
- Department of Clinical Pathology, Atieh Hospital, Tehran, Iran
| | - F Mahjoub
- Bahrami Children Hospital, Tehran University of Medical Sciences, Roshan Azma Pathobiology Laboratory, Pediatric Gastro- Enterology Research Center, Tehran, Iran
| | - M Fallahpour
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
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Baniadam L, Arshi S, Nabavi M, Yousefi A, Fallahpour M, Shokri S, Zare Mehrjerdi F, Salari F, Bemanian MH. Can concurrent lower gastrointestinal manifestations help the timely diagnosis of small intestinal bacterial overgrowth in CVID patients? Eur Ann Allergy Clin Immunol 2020; 53:18-22. [PMID: 32186350 DOI: 10.23822/eurannaci.1764-1489.137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Summary Introduction and objective. Gastrointestinal complications are considered as one of the most common manifestations in patients with Common Variable Immunodeficiency (CVID). These complications can result from Small Intestinal Bacterial Overgrowth (SIBO). Hydrogen breath test is extensively used to diagnose SIBO. The objective of this study was to evaluate the prevalence of SIBO using the Hydrogen Breath Test (HBT) in patients with CVID. Materials and methods. Twenty-seven patients with CVID entered this cross-sectional study. Demographic and lower gastrointestinal symptoms were recorded in a check list. Hemoglobin level was measured in all patients. The concentration of IgA and IgG was assessed using nephelometry. Moreover, SIBO was detected by means of Glucose hydrogen breath test. Results. The mean (plus-minus SD) age of the patients was 35.25 (plus-minus 11.69) years. Twenty patients (74.1%) manifested at least one lower gastrointestinal symptom. The most frequent lower gastrointestinal manifestations were bloating (66.7%) and chronic diarrhea (40.7%), respectively. IgA level less than 10 mg/dl and IgG level less than 600 mg/dl were determined in 77.8% and 25.9% of patients, respectively. Positive HBT was detected in 40.7% (n = 11) of the patients. In the positive HBT group, bloating, chronic diarrhea and abdominal pain were the most common lower GI manifestations. There was no significant difference in terms of age, BMI, IgA level, and duration of CVID between the positive and negative HBT groups. The significant association of co-occurrence of anemia and abdominal pain with positive HBT (positive predictive value: 100%) might be considered as a clue to SIBO diagnosis. Conclusions. Regarding the high prevalence and non-specific manifestation of SIBO, it is suggested to consider concurrent symptoms in patients with CVID to manage the timely and precise diagnosis of SIBO.
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Affiliation(s)
- L Baniadam
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - S Arshi
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - M Nabavi
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - A Yousefi
- Department of Pediatric Gastroenterology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - M Fallahpour
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - S Shokri
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - F Zare Mehrjerdi
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - F Salari
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - M H Bemanian
- Department of Allergy and Clinical Immunology, Rasool e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
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Yousefi A, Vaez H, Sahebkar A, Khademi F. A systematic review and meta-analysis on the epidemiology of antibiotic resistance of Vibrio cholerae in Iran. Ann Ig 2019; 31:279-290. [PMID: 31069372 DOI: 10.7416/ai.2019.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Cholera, an acute diarrheal disease caused by Vibrio cholerae (V. cholerae), is an endemic disease and a major public health problem in Iran. Antibiotic therapy can decrease duration of the disease, transmission of infection and contamination of the environment. Considering different pattern of V. cholerae antibiotic resistance around the world, the aim of the current systematic review and meta-analysis was to evaluate the prevalence of antibiotic resistance of V. cholerae in Iran. METHODS A systematic review of the literature was performed using related keywords in the electronic national and international databases including SID, Irandoc, Iran Medex and Magiran as well as PubMed, Scopus, Google Scholar and ISI web of knowledge. Up to July 31, 2018, 27 eligible papers were included in our meta-analysis based on the defined inclusion criteria. RESULTS V. cholerae O1 was the most prevalent strain isolated in Iran and exhibited a high resistance rate against numerous antibiotics including chloramphenicol (33.6%), oxytetracycline (40.2%), trimethoprim/sulphamethoxazole (86%), tetracycline (34.5%), furazolidone (69.8%), streptomycin (93.8%), polymyxin (80.7%), ampicillin (32.1%), nalidixic acid (88.9%), kanamycin (29%) and amoxicillin (30.5%). CONCLUSIONS According to the meta-analysis results, antibiotic therapy with ciprofloxacin, doxycycline, erythromycin, gentamicin, azithromycin, cefixime and cefepime could be effective for the treatment of severe cases of cholera in Iran.
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Affiliation(s)
- A Yousefi
- Department of Medical Bacteriology and Virology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - H Vaez
- Department of Microbiology, School of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - A Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute; Neurogenic Inflammation Research Center; School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - F Khademi
- Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
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Yousefi A, Chaechi Nosrati MR, Golmohammadi A, Azami S. Molecular Detection of Anaplasma Phagocytophilum as a Zoonotic Agent in Owned and Stray Dogs in Tehran, Iran. Arch Razi Inst 2019; 74:33-38. [PMID: 31013005 DOI: 10.22092/ari.2018.114893.1142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 01/13/2018] [Indexed: 09/30/2022]
Abstract
The genus Anaplasma is an obligated intracellular Rickettsia and among its species, Anaplasma phagocytophilum (A. phagocytophilum) is a zoonotic agent that infects host neutrophils. The aim of this study was molecular detection of A. phagocytophilum infection based on MSP4 gene in owned and stray dogs in Tehran, capital of Iran. One hundred and fifty blood samples were collected from dogs in Tehran and suburbs of Tehran, Iran. Firstly, the thin blood smears were prepared and Giemsa staining method was conducted. Then, the samples were examined under oil immersion objective and 0.67% of them were observed infected with A. phagocytophilum. The DNA was extracted from blood samples using a DNA isolation kit (MBST, Iran), and MSP4 gene extraction was performed by Polymerase chain reaction (PCR) and nested-PCR. Finally, 2% of the samples were positive for A. phagocytophilum. The data were analyzed using SPSS software (version 19.0) and Chi-square test was performed. There was no significant relation between infection and age, as well as sex and ectoparasitic infestation (P&gt;0.05). This article was a report of A. phagocytophilum infection in dogs and their potentials as host carriers of this important microorganism in Tehran, Iran.
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Affiliation(s)
- A Yousefi
- Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran.,Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - M R Chaechi Nosrati
- Department of Microbiology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - A Golmohammadi
- Department of Microbiology, Faculty of Veterinary Medicine, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - S Azami
- Department of Parasitology, Faculty of Paraveteriary Medicine, Bu-Ali Sina uiversity, Hamedan
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Salehi-Guilandeh S, Sadeghi-Dehkordi Z, Sadeghi-Nasab A, Yousefi A. Molecular detection of Anaplasma spp. in cattle of Talesh County, North of Iran. BJVM 2019. [DOI: 10.15547/bjvm.2135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Anaplasmosis is generally caused by intraerythrocytic rickettsia of Anaplasma genus and transmitted biologically and mechanically. The current study was designed to determine the prevalence of Anaplasma spp. in cattle in Talesh; one of the rainy Iranian counties in Gilan province, Iran. From May to November 2015, one hundred and fifty blood samples of cattle were collected from different regions in Talesh. DNA was extracted from blood samples and subsequently, 16S rRNA and MSP4 genes were analysed by Nested-PCR method for differentiation of Anaplasma spp. The results showed that 40.66% of blood samples were positive for Anaplasma spp. and that 24.66%, 35.33%, 9.33% and 12% of positive samples were infected with A. phagocytophilum, A. bovis, A. marginale and A. centrale respectively. Statistical analysis by Chi-square test did not show any significant relationship between the presence of Anaplasma species and variables sex, age and tick infestation (p˃0.05). The 4 species of Anaplasma reported in this study are of potential importance for animal and public health.
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11
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Raghavan P, Tang A, Bilaloglu S, Bayona C, Stone J, Wilfred M, Hung C, Yousefi A, Caughey M. Dose-response relationship during motor learning with bimanual-to-unimanual training. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Hussaini SMH, Zhandi M, Shahneh AZ, Sharafi M, Nejati-Javaremi A, Yousefi A, Emamverdi M, Shehab-El-Deen MAMM, Pastor FM. Effect of tert-butyl hydroquinone on bull semen cryopreservation. Cryo Letters 2017; 38:372-378. [PMID: 29734404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND Many studies have been shown that freezing induced oxidative stress has detrimental effect on post-thaw sperm quality. OBJECTIVE This study was conducted to investigate the effect of tert-butyl hydroquinone (tBHQ) on bull semen crtopreservation. MATERIALS AND METHODS In this study, four different levels of tBHQ [Optidyl containing zero (T0), 2.5 (T2.5), 5 (T5), and 7.5 µM (T7.5) tBHQ] was used to study the effect of tBHQ on freezability of bull semen. On each collection day, four ejaculates were collected (a total of 24 ejaculates from four bulls), pooled and divided to four equal parts. Each part was diluted with one of the above-mentioned extenders and frozen. After thawing, sperm motility, plasma membrane functionality and integrity, apoptosis status and mitochondrial activity were assessed. RESULTS The results show that total sperm motility was significantly higher in T5 compared to other groups. The value of VSL was significantly lower in T5 compared to T0. Also, T5 resulted in lower LIN and STR versus T0 and T2.5 groups. All extenders containing tBHQ resulted in a significantly higher percentage of sperm with functional membrane compared to T0 groups. Finally, Apoptosis related parameters and mitochondrial activity were not significantly difference between the groups. CONCLUSION adding 5 µM tBHQ to the bull semen extender can be beneficial for post-thaw sperm quality. Also, in vivo or in vitro fertility test is recommended to test fertilizing ability of tBHQ exposed sperm.
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Affiliation(s)
- S M H Hussaini
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran,Karaj, Iran
| | - M Zhandi
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran,Karaj, Iran.
| | - A Z Shahneh
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran,Karaj, Iran
| | - M Sharafi
- Department of Poultry Sciences, Faculty of Agriculture, Tarbiat Modares University; Department of Embryology at Reproduction Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACER, Tehran, Iran
| | - A Nejati-Javaremi
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran,Karaj, Iran
| | - A Yousefi
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran,Karaj, Iran
| | - M Emamverdi
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran,Karaj, Iran
| | - M A M M Shehab-El-Deen
- Department of Animal Production, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt
| | - F M Pastor
- NDEGSAL, University of Leon, Leon; Department of Molecular Biology, University of Leon, Leon, Spain
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Sandoghi A, Yousefi A, Amini AM. Farmers’ knowledge, attitude and practice of healthy greenhouse cucumber and tomato production in Isfahan County. ACTA ACUST UNITED AC 2016. [DOI: 10.18869/acadpub.ejgcst.7.27.155] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Taghipour M, Kondabey J, Arjmand F, EbrahimiMokaram E, Behravan M, Dodangeh F, Nozari M, Ahangaran E, Fereidouni F, Najaflou R, Hashemi Z, Yousefi A, Monajjemi M. Non-Covalent Investigation of Superparamagnetic “Fe 3O 4@SWBNNTs” Core–Shell. j comput theor nanosci 2016. [DOI: 10.1166/jctn.2016.5343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- M Taghipour
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - J Kondabey
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - F Arjmand
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - E EbrahimiMokaram
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - M Behravan
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - F Dodangeh
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - M Nozari
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - E Ahangaran
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - F Fereidouni
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - R Najaflou
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Z Hashemi
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - A Yousefi
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Majid Monajjemi
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Zargari S, Rahimi R, Yousefi A. An efficient visible light photocatalyst based on tin porphyrin intercalated between TiO2–graphene nanosheets for inactivation of E. coli and investigation of charge transfer mechanism. RSC Adv 2016. [DOI: 10.1039/c5ra19927a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Tin porphyrin intercalated between the TiO2–grphene nanocomposite. The inactivation of E. coli over the prepared compound was significantly increased via the interaction of tin porphyrin between the TiO2–graphene nanocomposite.
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Affiliation(s)
- S. Zargari
- Bioinorganic Chemistry Research Laboratory
- Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - R. Rahimi
- Bioinorganic Chemistry Research Laboratory
- Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - A. Yousefi
- Biotechnology Research Laboratory
- School of Chemical Engineering
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
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Sabounchei SJ, Ahmadianpoor M, Yousefi A, Hashemi A, Bayat M, Sedghi A, Akhlaghi Bagherjeri F, Gable RW. New Pd(ii) complexes of sulfur ylides; synthesis, X-ray characterization, a theoretical study and catalytic activity toward the Mizoroki–Heck reaction. RSC Adv 2016. [DOI: 10.1039/c6ra01390b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The reaction of sulfur ylides SMe2C(H)C(O)R (R = 4-nitrophenyl, phenyl, and 3-nitrophenyl) with [PdCl2(cod)] gives the new Pd(ii) complexes of type cis- and trans-[PdCl2(SMe2C(H)C(O)R)2] (R = phenyl (1), 3-nitrophenyl (2), and 4-nitrophenyl (3)).
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Affiliation(s)
| | | | - A. Yousefi
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan
- Iran
| | - A. Hashemi
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan
- Iran
| | - M. Bayat
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan
- Iran
| | - A. Sedghi
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan
- Iran
| | | | - R. W. Gable
- School of Chemistry
- University of Melbourne
- Australia
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Javadian S, Ruhi V, Heydari A, Asadzadeh Shahir A, Yousefi A, Akbari J. Self-Assembled CTAB Nanostructures in Aqueous/Ionic Liquid Systems: Effects of Hydrogen Bonding. Ind Eng Chem Res 2013. [DOI: 10.1021/ie302411t] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S. Javadian
- Department
of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran
| | - V. Ruhi
- Department
of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran
| | - A. Heydari
- Department
of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran
| | - A. Asadzadeh Shahir
- Department
of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran
| | - A. Yousefi
- Department
of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran
| | - J. Akbari
- Department
of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran
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Salehi M, Adinezade A, Khodajou R, Saberi karimian Z, Yousefi A. The epidemiologic survey of operated patients with hydatid cyst in hospitals of North Khorasan province during 2010-2011. ACTA ACUST UNITED AC 2013. [DOI: 10.29252/jnkums.4.4.623] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Binesh F, Yousefi A, Ordooei M, Bagherinasab MA. Gaucher's Disease, an Unusual Cause of Massive Splenomegaly, a Case Report. Iran J Ped Hematol Oncol 2013; 3:173-5. [PMID: 24575292 PMCID: PMC3915458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Accepted: 09/29/2013] [Indexed: 12/04/2022]
Abstract
BACKGROUND Gaucher's Disease (G.D.) is an autosomal recessive disorder resulting from the accumulation of glucocerebrosidase in the cells of macrophage-monocyte system as a result of a deficiency in lysosomal glucocerebrosidase. This enzyme is encoded by a gene on chromosome-1. Here we report a case of Gaucher's Disease .G.D is rare in Yazd. CASE REPORTS We reported a patient that presented with weakness, pallor and gradually increasing abdominal girth. Clinical examination and history pointed to be a lipid storage disease. Final diagnosis of G.D. was reported after examining the bone marrow smears. Confirmation of diagnosis on Gaucher's disease was performed by measurement of glucocerebrosidase level. CONCLUSION We report a case of G.D. to emphasize the importance of early recognition by clinical manifestation and histological findings. G.D. should be considered in the differential diagnosis of children with unexplained splenomegaly.
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Affiliation(s)
- F Binesh
- Associate Professor Of Pathology,Shahid Sadoughi University Of Medical Sciences,Yazd,Iran
| | - A Yousefi
- Assistant Professor Of Pediateric Disease, Shahid Sadoughi University Of Medical Sciences,Yazd,Iran
| | - M Ordooei
- Assistant Professor Of Pediateric Disease, Shahid Sadoughi University Of Medical Sciences,Yazd,Iran
| | - MA Bagherinasab
- General practitioner, Shahid Sadoughi University Of Medical Sciences,Yazd,Iran
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20
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Farshad A, Yousefi A, Moghaddam A, Khalili B. Seasonal Changes in Serum Testosterone, LDH Concentration and Semen Characteristics in Markhoz Goats. Asian-Australas J Anim Sci 2012; 25:189-93. [PMID: 25049550 PMCID: PMC4093144 DOI: 10.5713/ajas.2011.11179] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/12/2011] [Accepted: 10/17/2011] [Indexed: 11/27/2022]
Abstract
This experiment was conducted to study variations of serum testosterone and seminal characteristics of Markhoz male goats. Blood samples were obtained via jugular vein, and semen was collected by using an artificial vagina from 14 fertile male goats (2–3 years of age), at 15-day intervals starting on 15 July and ending on 30 October 2010 (during breeding and non-breeding season). Semen volume, total sperm (volume×concentration), live sperm (%), abnormal sperm (%) and semen pH were significantly superior during the late summer and early autumn (breeding season). Variation of sperm density, motility and progressive motility was not significant during the sampling period. The results presented show that the lowest and highest levels of lactate dehydrogenase in the seminal plasma were recorded in late October (2.82 U/ml) and in late August (4.81 U/ml), respectively. Moreover, the study indicated that the serum testosterone concentration was higher during late summer and early autumn (p<0.05) than at any other of sampling period. There were negative correlations between volume and sperm density (−0.135, p<0.05), and positive correlations between volume and percentage live sperm (0.224) and percentage progressive motility (0.194, p<0.01). Sperm density was correlated with live sperm (0.200, p<0.05) and progressive motility (0.202, p<0.01). The correlation between live sperm and progressive motility was 0.554 (p<0.01). Furthermore, the results in this study indicated a significant positive correlation between live sperm and LDH (0.450) and a negative correlation between sperm density and LDH concentration (−0.272) (p<0.01). Significant, but positive correlations were found between sperm motility and LDH (0.542) and testosterone concentration (0.522), respectively (p<0.05). In conclusion, this study demonstrated that the best obtained semen was collected in late summer (during decreasing photoperiod) and early autumn (September and October). This also coincides with the natural breeding season of Markhoz goats in Iran.
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Affiliation(s)
- A Farshad
- Department of Animal Science, College of Agriculture, Eslamic Azad University, Saveh-Iran
| | - A Yousefi
- Department of Animal Science, College of Agriculture, Eslamic Azad University, Saveh-Iran
| | - A Moghaddam
- Department of Animal Science, College of Agriculture, University of Razi, Kermanshah, Iran
| | - B Khalili
- Jafar-Abad Livestock Central Research Institute, Ministry of Agriculture, Ardebil, Iran
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21
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Yousefi A, Fotouhi F, Hosseinzadeh S, Kheiri MT, Farahmand B, Montazeri S, Mousavi F. Expression of antigenic determinants of the haemagglutinin large subunit of novel influenza virus in insect cells. Folia Biol (Praha) 2012; 58:151-156. [PMID: 22980506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The global outbreak of novel A/H1N1 spread in human population worldwide has revealed an emergency need for producing a vaccine against this virus. Current influenza vaccines encounter problems with safety issues and weak response in high-risk population. It has been established that haemagglutinin is the most important viral antigen to which antibody responses are directed, and recombinant subunit vaccines, haemagglutinin of influenza A and B viruses, have been considered in order to facilitate vaccine production. In the present study, we have focused on construction of a recombinant baculovirus encoding the large subunit of novel influenza virus A/H1N1 haemagglutinin. The full genome of haemagglutinin was cloned into pGEM-TEasy vector and sequenced. The large subunit of the haemagglutinin gene was amplified by PCR using specific primers and cloned into pFast- BacHTc donor plasmid, which was then confirmed by restriction enzyme analysis and sequencing and transformed into E. coli DH10Bac competent cells. The bacmid DNA was transfected into insect cells to produce recombinant baculovirus. Expression of recombinant haemagglutinin in insect cells was determined by SDS-PAGE and immunoblotting. It has been shown that the recombinant haemagglutinin (rHA) obtained from the baculovirus insect cell expression system has suitable immunogenicity in human and can be considered as a candidate flu vac- cine. Here we produced large amounts of the HA1 protein of novel influenza A/H1N1 (Iranian isolate) in insect cells. The immunogenicity and efficacy of the recombinant HA1 will be evaluated as a vaccine candidate and compared to the recombinant HA1 produced in a prokaryotic system.
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Affiliation(s)
- A Yousefi
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Science and Research Branch of Islamic Azad University, Tehran, Iran
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22
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Abbasian F, Tabatabaie H, Sarijloo M, Shahmahmoodi S, Yousefi A, Saberbaghi T, Mokhtari Azad T, Nategh R. A comparative analysis of routine techniques: Reverse transcriptase polymerase chain reaction (RT-PCR) and five cell lines for detection of enteroviruses in stool specimens. Iran J Microbiol 2011; 3:75-9. [PMID: 22347586 PMCID: PMC3279806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
BACKGROUND AND OBJECTIVES Each year, Enteroviruses infect millions of people and cause different diseases. The agents are usually detected using cell culture. RD (Rhabdomyosarcoma) and L20B (L cells) are among the recommended cells by the World Health Organisation (WHO) for this purpose. Even though cell culture is the most common method used in diagnosing Enteroviruses in stool specimens, this particular method poses some problems, which include false positive or negative results, lack of a unique cell line for diagnosing all Enterovirus types in addition to being time consuming. For these reasons, an attempt was made to find better techniques of Enterovirus detection. RT-PCR (Reverse Transcriptase Polymerase Chain Reaction) is a technique used in place of the cell culture method. In this study, the cell culture method was compared with RT-PCR for detection of Enteroviruses in stool specimens. MATERIAL AND METHOD First, the chloroform treated stool samples were inoculated onto five cell lines, including RD, L20B, Hep-2 (Human Epidermoid carcinoma cell line), Vero (Verde Reno) and GMK (Green Monkey Kidney). The results were then compared with data from Enterovirus detection using the RT-PCR technique. RESULTS AND CONCLUSION The difference between RT-PCR and cell culture results was significant. Enteroviruses were detected in 24% of specimens using RT-PCR while cell lines could isolate Enteroviruses in just 14.4% of the samples.
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Affiliation(s)
- F Abbasian
- Corresponding author: Firouz Abbasian Address: Virology Division, Pathobiology Department, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran. Tel: +60-349-6064. E-mail:
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Joudaki E, Hashemi SJ, Mohammadi F, Yousefi A, Eivazkhani M. Oxygen reduction electrode in advanced chlor-alkali with ruthenium as electro-catalyst. CAN J CHEM ENG 2010. [DOI: 10.1002/cjce.20329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Arbab-Zavar MH, Chamsaz M, Yousefi A, Ashraf N. Electrochemical hydride generation of thallium. Talanta 2009; 79:302-7. [PMID: 19559882 DOI: 10.1016/j.talanta.2009.03.052] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2009] [Revised: 03/21/2009] [Accepted: 03/23/2009] [Indexed: 11/26/2022]
Abstract
An electrochemical hydride generation (ECHG) technique was developed to improve the determination of thallium by atomic spectrometry. The technique is based on the catholyte variation system for production of thallium hydride. Using Pb-Sn alloy as cathode, a transient peak shaped signal was achieved and its height, the maximum absorbance value, was taken as an analytical parameter. Parameters that might affect the hydride generation efficiency were investigated and the analytical performance of the method under the optimized experimental conditions was assessed. The linear range was 1-250 ng mL(-1) for thallium and the relative standard deviation of the method was 4.2% (RSD, n=7). The LOD for thallium was found to be 0.8 ng mL(-1), showing a significant improvement relative to conventional chemical hydride generation techniques. The proposed method was applied to the determination of thallium in unalloyed zinc standard reference material. This method offers high sensitivity, simplicity, rapidness, freeness from reagent and low acid consumption.
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Affiliation(s)
- M H Arbab-Zavar
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
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26
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Akbarzadeh Z, Esmailzadeh M, Yousefi A, Safaei A, Raisi K, Sharifi F. Multicentric familial cardiac myxoma. Eur J Echocardiogr 2005; 6:148-50. [PMID: 15760692 DOI: 10.1016/j.euje.2004.07.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2004] [Accepted: 07/30/2004] [Indexed: 10/26/2022]
Abstract
Familial cardiac myxoma is a rare syndrome which constitutes approximately 10% or less of all myxomas. We describe a rare case of LA and LV mass simultaneously in a 35-year-old female presenting to our hospital for evaluation of recurrent cardiac myxoma. Echocardiography revealed both LA and LV mass. Surgery was done and histological findings confirmed the diagnosis of myxoma.
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Affiliation(s)
- Z Akbarzadeh
- Shahid Rajaee Cardiovascular Center, Tehran, Iran
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Yousefi A, Lafleur PG, Gauvin R. Numerical analysis of promoted polyester and vinylester reinforced composites in RTM molds. POLYM ENG SCI 2004. [DOI: 10.1002/pen.11719] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Yousefi A, Bendada A, Diraddo R. Improved modeling for the reheat phase in thermoforming through an uncertainty treatment of the key parameters. POLYM ENG SCI 2004. [DOI: 10.1002/pen.11016] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
BACKGROUND Adamantiades-Behçet's disease is a chronic systemic disorder associating oral and genital ulcerative lesions with ocular and cutaneous manifestations. Previous publications report increased superoxide production by neutrophils and macrophages, increases in cytokines and malondialdehyde (MDA), as well as low levels of enzymatic antioxidant defenses. AIM We looked for another marker of oxidative stress in Adamantiades-Behçet's disease: the presence of clastogenic factors (CF) in patients' plasma. In addition, we determined plasma endproducts of lipid peroxidation (MDA). PATIENTS AND METHODS We studied 20 patients and 20 controls. The clastogenic activity was evaluated by means of cytogenetic methods. This test (CF test) detects circulating prooxidants, due to their clastogenic effects after exposure of lymphocyte cultures of healthy persons to plasma ultrafiltrates from patients. The clastogenic prooxidants are lipid peroxidation products and cytokines, in particular TNF-alpha. Lipid peroxidation was evaluated by the Yagi method. RESULTS The CF test was positive in 18 out of 20 patients, while it was negative in all 20 control persons. The mean increase in chromosomal breaks was 10.6 +/- 3.8 in cultures exposed to patients' plasma and 1.3 +/- 2.4 for cultures receiving control plasma (p <0.001). The clastogenic effect of patients' plasma ultrafiltrates was significantly inhibited by superoxide dismutase (EC 1.15.1.1), suggesting an important role of the superoxide radical in the clastogenic pathway. Thiobarbituric-acid-reactive substances (expressed as nanomoles MDA per milliliter) were also significantly increased in these patients: 10.6 +/- 3.2 for patients and 6.6 +/- 1.4 for controls (p <0.001). CONCLUSION The presence of CF in the plasma of patients, indicating the presence of circulating prooxidants with chromosome-damaging effects, confirms an oxidative stress in Adamantiades-Behçet's disease. The anticlastogenic effect of superoxide dismutase in vitro suggests the implication of the superoxide radical. MDA levels were also significantly increased in patients.
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Affiliation(s)
- J P Freitas
- Department of Dermatology, Hospital de Santa Maria, Lisboa, Portugal
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Elmi F, Quintana B, Yousefi A. Difficult-to-control hypertension. Mayo Clin Proc 2000; 75:655-6. [PMID: 10852431 DOI: 10.4065/75.6.655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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Yousefi A, Katbab A. Post irradiation degradation of polypropylene radiation durability of polypropylene stabilized with phenolic stabilizer (II). Radiat Phys Chem Oxf Engl 1993 1994. [DOI: 10.1016/0969-806x(94)90224-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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