1
|
Taghipour A, Pirestani M, Hamidi Farahani R, Barati M. The Frequency of Intestinal Parasitic Infections in COVID-19 Patients: A Case-Control Study in Tehran, Capital of Iran. J Trop Med 2023; 2023:5359823. [PMID: 37719419 PMCID: PMC10504051 DOI: 10.1155/2023/5359823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/04/2023] [Accepted: 09/04/2023] [Indexed: 09/19/2023] Open
Abstract
The present study was done to evaluate the prevalence of intestinal parasitic infections (IPIs) in patients with COVID-19 in health care centers (Imam Reza and Golestan hospitals), Tehran, capital of Iran. By designing a matched case-control study, 200 fecal samples were collected for each of the COVID-19 patients and healthy individuals. Nasopharyngeal/oropharyngeal swab samples were collected from all participants for the diagnosis of COVID-19. RNA extraction was performed, and then real time reverse-transcription polymerase chain reaction (rRT-PCR) assay was applied to detect viral RNA. Considering the lung complications, 25%> lung complications was detected in 49 patients, 25-49% in 42 patients, and 50%≤ in 109 patients. Fecal samples were examined using different parasitological techniques. After nested-PCR, sequencing was applied to identify Cryptosporidium spp. and microsporidia spp. A relatively lower prevalence of IPIs was detected among control group (7.5%), than in COVID-19 patients (13%), though not significant (P=0.13). The most prevalent parasite among patients was Blastocystis sp. (6%). Also, 13.76% of IPIs were detected in inpatients with more than 50% lung complication. As well, a remarkably significant difference in IPIs was observed among diarrheic COVID-19 patients, in comparison with nondiarrheic patients (P < 0.00001). Moreover, the isolated sequences in the present study belonged to C. parvum subtype IIa and Enterocytozoon bieneusi genotypes D and Peru 8. In conclusion, more epidemiological and clinical research studies are needed to better understand the status and interaction of IPI in COVID-19 in Iran and other countries.
Collapse
Affiliation(s)
- Ali Taghipour
- Zoonoses Research Center, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Majid Pirestani
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ramin Hamidi Farahani
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| |
Collapse
|
2
|
Alizadeh A, Barati M, Hadian A, Almasi R, Salehi S, Javanmard Y, Azizi M. Psychological impacts of the COVID-19 on health care providers. J Educ Health Promot 2023; 12:272. [PMID: 37849851 PMCID: PMC10578530 DOI: 10.4103/jehp.jehp_1179_22] [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] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 10/02/2022] [Indexed: 10/19/2023]
Abstract
BACKGROUND Psychological distress, functional impairment, reduced quality of life, and subjective well-being were the most common negative psychological effects during the COVID-19 outbreak. The present study was to investigate the impact of job stress, hospital resources, and fear of infection on job burnout of medical staff in Iran during the Covid-19 pandemic. MATERIALS AND METHODS In this cross-sectional study, 223 hospital staff from several public and private hospitals in Tehran and Mazandaran provinces, selected through convenience sampling. The questionnaire included the validated "Maslach Burnout Inventory (MBI)", "job stress scale (Parker and DeCotiis, 1983)", and the questions about "hospital resources", and "fear of infection" developed by the researcher wereused to collect data. Data were analyzed by correlation and regression methods using SPSS software. RESULTS The results revealed that there was a significant difference in the scores on the burnout scale, in the dimension of emotional exhaustion, but the differences were not significant in the dimensions of depersonalization and self-accomplishment. Also, job stress and fear of infection significantly correlated with job burnout in the dimensions of emotional exhaustion and personal-accomplishment. However, the correlation between the adequacy of hospital resources and job burnout in these two dimensions was not significant. None of the three variables of the study showed a significant correlation with the dimension of depersonalization. CONCLUSION It is essential to consider the package of psychological interventions which, primarily includes finding the sources of stress to resolve them through stress management programs, based on education and training in stress coping and management strategies.
Collapse
Affiliation(s)
- Azizeh Alizadeh
- Department of Education and Research, Army Center of Excellence (NEZAJA), Center of Consultation of Khanevadeh Hospital, Tehran, Iran
| | - Mohammad Barati
- Infectious Diseases Research Center, Aja University of Medical Sciences, Tehran, Iran
| | - Arash Hadian
- Department of Education and Research, Army Health Center of Excellence (NEZAJA), Tehran, Iran
| | - Reza Almasi
- Department of Education and Research, Army Health Center of Excellence (NEZAJA), Tehran, Iran
| | | | - Yavar Javanmard
- Department of Education and Research, Army Center of Excellence (NEZAJA), Center of Consultation of Khanevadeh Hospital, Tehran, Iran
| | - Maryam Azizi
- Health in Disaster and Emergencies, Faculty of Nursing, Aja University of Medical Sciences, Tehran, Iran
| |
Collapse
|
3
|
Dalir Ghaffari A, Barati M, Ghaffarifar F, Pirestani M, Ebrahimi M, KarimiPourSaryazdi A. Investigation of antileishmanial activities of CaO nanoparticles on L. tropica and L. infantum parasites, in vitro. J Parasit Dis 2023; 47:73-81. [PMID: 36910320 PMCID: PMC9998763 DOI: 10.1007/s12639-022-01539-6] [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: 09/06/2022] [Accepted: 10/07/2022] [Indexed: 10/31/2022] Open
Abstract
Stibogluconate sodium and meglumine antimoniate are the main antimonials utilised as the primary treatment option for leishmaniasis. However, have a number of side effects that limit their use. Development of nanoparticles (NPs) use in biological research and remarkable antimicrobial effects and unique optical and structural properties of CaO NPs have motivated this study to evaluated the effect of different times/dilutions of CaO NPs on Leishmania tropica and Leishmania infantum. To evaluate the antileishmanial activity of CaO NPs, the cytotoxic effect of CaO NPs against L. tropica and L. infantum amastigotes, promastigotes, as well as macrophages, was evaluated using counting and MTT assay after adding different concentrations of CaO nanoparticles (800-6.25 μg/ml) to the parasite culture. The possible apoptosis by CaO NPs were evaluated via flow cytometry assay. The XRD-pattern related to CaO nanoparticles indicating the cubic phase structures. According the effects of nanoparticle on promastigotes the IC50 values of CaO nanoparticles within 72 h were 19.81 μg/ml for L. tropica and 22.57 μg/ml for L. infantum. The percentage of the normal, apoptotic, and necrotic cells was estimated to be 82.6%, 14.81%, and 2.69% for L. tropica, and 73.6%, 23.89%, and 2.58% for L. infantum, respectively. Our results showed acceptable in vitro activity level of CaO NPs against L. tropica and L. infantum promastigotes as well as intracellular amastigotes. CaO NPs were more effective against L. infantum compared to L. tropica in vitro study.
Collapse
Affiliation(s)
- Ali Dalir Ghaffari
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Fatemeh Ghaffarifar
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Majid Pirestani
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mohsen Ebrahimi
- Department of Toxicology and Pharmacology, Faculty of Medicine, AJA University of Medical Sciences, Tehran, Iran
| | - Amir KarimiPourSaryazdi
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| |
Collapse
|
4
|
Ghaffari AD, Barati M, KarimiPourSaryazdi A, Ghaffarifar F, Pirestani M, Ebrahimi M. In vitro and in vivo study on antiprotozoal activity of calcium oxide (CaO) and magnesium oxide (MgO) nanoparticles on promastigote and amastigote forms of Leishmania major. Acta Trop 2023; 238:106788. [PMID: 36493855 DOI: 10.1016/j.actatropica.2022.106788] [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: 08/28/2022] [Revised: 11/26/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Currently, anti-leishmanial drugs have been developed. However, the available compounds have several side effects such as drug resistance and toxicity that cause some limitation for use. The development of nanoparticles (NPs) use in biological research and the proven effectiveness of CaONPs and MgONPs on bacteria and fungi, along with the lack of information about its antileishmanial effects, have motivated this study. CaO and MgONPs possess considerable antibacterial effects because of their alkalinity and active oxygen species. This study has taken into account the impacts of these two NPs on the L. major in vitro and in vivo. METHODS To evaluate the antileishmanial activity of NPs, the cytotoxic effect of CaONPs, MgONPs, and MgOCaONPs against L. major amastigotes, promastigotes, as well as macrophages, was evaluated using counting or MTT assay. The possible apoptosis of L. major by CaONPs, MgONPs, and MgOCaONPs was evaluated via flow cytometry assay. For in vivo study, BALB/c mice were allocated to five groups and the lesions of infected mice with L. major promastigotes were treated with a 200 μg/mL concentration CaONPs, MgONPs, and MgOCaONPs, then the mice underwent a 4-week follow-up to examine the wound diameter and survival rates. RESULTS The XRD-pattern related to CaONPs and MgONPs indicating the cubic phase and Rocksalt cubic structures. According the effects of nanoparticle on promastigotes the IC50 values of CaONPs, MgONPs, and MgOCaONPs within 72 h were 7.9 ug/mL, 10.3 ug/mL, and 8.0 ug/mL respectively. CaONPs, MgONPs, and MgOCaONPs induced apoptosis in about 7.8%, 53.57%, and 12.8% of promastigotes. All mice presented lesions. MgONPs was the most effective in reducing the size of the lesions. CONCLUSION According to the results of the present research, MgONPs and CaONPs showed good in vitro and in vivo effects on L. major promastigotes and intracellular amastigotes especially MgONPs, and also it seems that MgONPs are applicable in Leishmania infection treatment due to their potential antileishmanial effects.
Collapse
Affiliation(s)
- Ali Dalir Ghaffari
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran.
| | - Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran.
| | - Amir KarimiPourSaryazdi
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Fatemeh Ghaffarifar
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Majid Pirestani
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mohsen Ebrahimi
- Department of Toxicology and Pharmacology, Faculty of Medicine, AJA University of Medical Sciences, Tehran, Iran
| |
Collapse
|
5
|
Barati M, Chahardehi AM, Hosseini Y. Finding Integrative Medication for Neuroblastoma and Glioblastoma through Zebrafish as A Model of Organism. Curr Top Med Chem 2023; 23:2807-2820. [PMID: 37861004 DOI: 10.2174/0115680266252617231010070539] [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: 03/09/2023] [Revised: 09/01/2023] [Accepted: 09/11/2023] [Indexed: 10/21/2023]
Abstract
As far as malignant tumors of the central nervous system are concerned, glioblastoma (GB) and neuroblastoma (NB) are the most prevalent, aggressive, and fatal forms in adult and pediatric populations, respectively. NB is the most prominent childhood extracranial compact neoplasm in pediatrics when the embryo develops from undifferentiated neural crest cells. Regarding malignant primary brain tumors, GB is the most lethal and difficult to treat. Currently, there are few effective treatments available for either condition. Research using zebrafish is relatively new in the field of animal cancer studies, and the first results show promise. In particular, integrated genomic investigations of NB and GB have revealed the potential of the zebrafish model in elucidating the roles of specific genetic changes in the development of this fatal childhood malignancy. Hence, this study examines the possibility of zebrafish as a model organism for discovering integrative medicines for these types of cancer. This model is an excellent animal model for study due to its transparency, ease of genetic modification, ethics and financial benefits, and preservation of the primary brain areas andbloodbrain barrier (BBB). This review provides recent developments in the zebrafish model of NB and GB to illustrate the benefits of using them in cancer studies as a model of the organism. This approach provides novel insights into delivering individualized treatment and enhancing outcomes for people coping with central nervous system malignancies.
Collapse
Affiliation(s)
- Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Amir Modarresi Chahardehi
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
- Cognitive Neuroscience Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Yasaman Hosseini
- Cognitive Neuroscience Research Center, AJA University of Medical Sciences, Tehran, Iran
| |
Collapse
|
6
|
Barati M, KarimiPourSaryazdi A, Rahmanian V, Bahadory S, Abdoli A, Rezanezhad H, Solhjoo K, Taghipour A. Global prevalence and subtype distribution of Blastocystis sp. in rodents, birds, and water supplies: A systematic review and meta-analysis. Prev Vet Med 2022; 208:105770. [PMID: 36181747 DOI: 10.1016/j.prevetmed.2022.105770] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 03/03/2022] [Revised: 09/21/2022] [Accepted: 09/23/2022] [Indexed: 10/31/2022]
Abstract
Animals such as rodents and birds may play a key role in the distribution of Blastocystis sp., either as introducers of the parasite into the water or as receptors of an infection already established in the water. Hence, we aimed to evaluate the prevalence and subtype distributions of Blastocystis sp. in rodents, birds, and water supplies at a global scale through a systematic review and meta-analysis approach. The standard protocol of preferred reporting items for systematic reviews and meta-analyses (PRISMA) statements were applied. Eligible prevalence studies on Blastocystis sp. in rodents, birds, and water supplies, published between 1 January 2000 and 20 January 2022 were collected using a systematic literature search in online databases (Scopus and Web of Science) and search engines (PubMed and Google Scholar). Inclusion and exclusion criteria were followed. The point estimates and 95% confidence intervals (CI) were calculated using a random-effects model. The variances between studies (heterogeneity) were computed by I2 index. In total, 20 articles (24 datasets) for birds, 18 articles (18 datasets) for rodents, and 10 articles (12 datasets) for water supply were included for the final meta-analysis. The pooled prevalence of Blastocystis sp. in birds, rodents, and water was estimated to be 29% (95% CI 12-47%), 18% (95% CI 12-23%), and 10% (95% CI 6%-15%), respectively. Considering the subtypes, Blastocystis sp. with subtypes ST7 in birds, ST4 in rodents, and ST1 in water supplies were the highest reported subtypes. The present results highlight the role of birds, rodents, and water as a reservoir for human-infected Blastocystis sp. Therefore, this global estimate could be beneficial for preventive and control measures.
Collapse
Affiliation(s)
- Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Amir KarimiPourSaryazdi
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Vahid Rahmanian
- Research Center for Social Determinants of Health, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Saeed Bahadory
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Amir Abdoli
- Department of Parasitology and Mycology, Jahrom University of Medical Sciences, Jahrom, Iran; Zoonoses Research Center, Jahrom University of Medical Sciences, Jahrom, Iran.
| | - Hassan Rezanezhad
- Department of Parasitology and Mycology, Jahrom University of Medical Sciences, Jahrom, Iran; Zoonoses Research Center, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Kavous Solhjoo
- Department of Parasitology and Mycology, Jahrom University of Medical Sciences, Jahrom, Iran; Zoonoses Research Center, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Ali Taghipour
- Zoonoses Research Center, Jahrom University of Medical Sciences, Jahrom, Iran.
| |
Collapse
|
7
|
Azizi M, Ebadi A, Ostadtaghizadeh A, Dehghani Tafti A, Roudini J, Barati M, Khankeh HR, Bidaki R. Psychological Distress Model Among Iranian Pre-Hospital Personnel in Disasters: A Grounded Theory Study. Front Psychol 2021; 12:689226. [PMID: 34858247 PMCID: PMC8631713 DOI: 10.3389/fpsyg.2021.689226] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 09/22/2021] [Indexed: 11/13/2022] Open
Abstract
Objective: Pre-hospital personnels (PHPs) who work in disasters under extreme pressure, uncertainty, and complex situations are victims of disasters themselves, and there is a link between experiencing such incidents and mental health problems. Because most studies focus on the injured and less on the psychological issues of PHPs, the present study aimed to develop a model to provide relief for PHPs in disasters from a psychological perspective. Methods: A grounded theory methodology recommended by Corbin and Strauss (2015) was employed. PHPs (n = 24) participated in a semi-structured interview between July 2018 to May 2020. Results: In the analysis of the pre-hospital staff interviews, three main themes were extracted, namely, providing relief with struggle (complexity of incident scenes, command-organizational and occupational challenges), psychological distress (psychological regression and psychological empowerment), and consequences (resilience and job burnout). Seven categories and 22 subcategories were explored from our data via the grounded theory approach Conclusions: The PHPs managed psychological distress with two approaches: psychological self-empowerment and regression, which resulted in resilience and burnout, respectively. Due to the lack of enough support, the resilience of the PHPs was short-term, turned into burnout over time, and affected the structural factors again as a cycle.
Collapse
Affiliation(s)
- Maryam Azizi
- Faculty of Nursing, AJA University of Medical Sciences, Tehran, Iran.,School of Public Health, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - Abbas Ebadi
- Behavioral Sciences Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.,Nursing Faculty, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Abbas Ostadtaghizadeh
- Department of Disaster and Emergency Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Abbasali Dehghani Tafti
- School of Public Health, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - Juliet Roudini
- Clinical Psychology and Psychotherapy, Department of Psychology, University of Leipzig, Leipzig, Germany
| | - Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Hamid Reza Khankeh
- Health in Emergency and Disaster Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Reza Bidaki
- Research Center of Addiction and Behavioral Sciences, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| |
Collapse
|
8
|
Barati M, Mohebali M, Khamesipour A, Bahrami F, Darabi H, Khaze V, Riazi-Rad F, Habibi G, Ajdary S, Alimohammadian MH. Evaluation of Cellular Immune Responses in Dogs Immunized with Alum-Precipitated Autoclaved Leishmania major along with BCG and Imiquimod. Iran J Parasitol 2021; 16:348-356. [PMID: 34630579 PMCID: PMC8476724 DOI: 10.18502/ijpa.v16i3.7087] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 03/05/2020] [Indexed: 11/24/2022]
Abstract
Background: We aimed to investigate the potential effects of BCG and imiquimod on improvement of current experimental L. major vaccine against dogs in an endemic area of Zoonotic visceral leishmaniasis (ZVL) in Iran. Methods: During 2012 till 2014, seven mixed-breed shepherd dogs with no anti-Leishmania antibodies and no response to Leishmanin reagent were immunized with 2 doses of alum-precipitated autoclaved L. major (Alum-AML) while BCG and imiquimod (for skin pre-treatment) were used as adjuvants. The productions of a few characteristic cytokines of T-helper immune responses and the development of delayed-type hypersensitivity (DTH) of the immunized animals were then evaluated, up to 300 days. Blood samples were collected at 0, 30, 80 and 300 d post-vaccination and the concentrations of IFN-γ, IL10, IL-12 and TGF-β cytokines secreted from PBMCs at these time-points were quantified by ELISA. DTH was evaluated by Leishmanin skin test (LST). Results: Although a similar LST conversion was observed at all time-points, the cytokine measurement results indicated significantly higher levels of IFN-γ at day 80 and elevated levels of IL-10 at days 80 and 300, post-vaccination. Moreover, a significantly higher IFN-γ/IL-10 ratio was observed at day 30 post-vaccination compared to the other time-points. Conclusion: Although a Th1-like response could be observed at day 30 post-vaccination, the development of cytokine profiles was inclined toward mixed Th1 and Th2 responses at days 80 and 300 post-vaccination. This situation may indicate the requirement of an additional boosting by this Alum-AML formula, in order to induce long-lasting protection against ZVL.
Collapse
Affiliation(s)
- Mohammad Barati
- Department of Immunology, Pasteur Institute of Iran, Tehran, Iran
| | - Mehdi Mohebali
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Khamesipour
- Center for Research and Training in Skin Diseases and Leprosy, Tehran University of Medical Sciences, Tehran, Iran
| | - Fariborz Bahrami
- Department of Immunology, Pasteur Institute of Iran, Tehran, Iran
| | - Haiedeh Darabi
- Department of Immunology, Pasteur Institute of Iran, Tehran, Iran
| | - Vahid Khaze
- Department of Immunology, Pasteur Institute of Iran, Tehran, Iran
| | - Farhad Riazi-Rad
- Department of Immunology, Pasteur Institute of Iran, Tehran, Iran
| | | | - Soheila Ajdary
- Department of Immunology, Pasteur Institute of Iran, Tehran, Iran
| | | |
Collapse
|
9
|
Barati M, Taghipour A, Bakhshi B, Shams S, Pirestani M. Prevalence of intestinal parasitic infections and Campylobacter spp. among children with gastrointestinal disorders in Tehran, Iran. Parasite Epidemiol Control 2021; 13:e00207. [PMID: 34027141 PMCID: PMC8122356 DOI: 10.1016/j.parepi.2021.e00207] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 10/03/2020] [Revised: 01/30/2021] [Accepted: 02/01/2021] [Indexed: 12/13/2022] Open
Abstract
Co-infection of intestinal parasitic infections (IPIs) and Campylobacter spp. are public health problem in both developing and developed countries. This study was conducted to determine prevalence of IPIs and Campylobacter spp. among children with gastrointestinal disorders in Tehran. In this descriptive cross-sectional survey, 283 fresh stool samples were collected from all individuals and examined by standard parasitological methods including direct slide smear, formalin-ether concentration, trichrome staining, modified Ziehl-Neelsen staining, and chromotrope 2R staining techniques were used for detection of intestinal protozoa and helminths. Furthermore, culture and multiplex-PCR were also used to identify the species of Campylobacter. Data analysis was performed using SPSS version 16. IPIs were detected microscopically in 22.26% of the total study population, with a higher prevalence in Giardia duodenalis (7.06%) and Blastocystis hominis (7.06%). Campylobacter were detected molecularly in 14.8% (95.2% of C. jejuni vs. 4.8% of C. coli) of the total study populations; of these, 3.5% had co-existence with IPIs colonized patients. Our results showed a relatively high prevalence of IPIs and Campylobacter in children with diarrhea. Further research is needed to better understand their co-infection and ensure future advances in clinical trials, testing, and development of therapeutic approaches for these pathogens.
Collapse
Affiliation(s)
- Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Ali Taghipour
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Bita Bakhshi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Saeed Shams
- Cellular and Molecular Research Center, Qom University of Medical Sciences, Qom, Iran
| | - Majid Pirestani
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| |
Collapse
|
10
|
Ghaffari H, Ataei-Pirkooh A, Mirghazanfari SM, Barati M. Inhibition of herpes simplex virus type 1 infection by Sambucus ebulus extract in vitro. Med J Islam Repub Iran 2021; 35:9. [PMID: 33996660 PMCID: PMC8111625 DOI: 10.47176/mjiri.35.9] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Indexed: 11/23/2022] Open
Abstract
Background: The emergence of drug-resistant strains of herpes simplex virus type 1 (HSV-1) has been increasingly reported. Therefore, attempts to discover new antiviral agents in particular from natural compounds are required. In this study, we evaluated the possible inhibitory effects of hydroalcoholic extract of Sambucus ebulus (S. ebulus ) against HSV-1. Methods: S. ebulus extract was produced by maceration method. MTT assay was used to evaluate the cytotoxicity effects of the S. ebulus extract; also, antiviral effects were measured both by test TCID50 and quantitative real-time PCR methods. To study the inhibitory impact of S. ebulus extract on the expression of HSV-1 antigens, indirect immunofluorescence assay (IFA) was also performed. All analyses were performed using the GraphPad Prism software v. 7.0. Results: In the postexposure assay of HSV-1 with S. ebulus extract at the highest nontoxic concentration (75 μg/mL), S. ebulus extract led to 2.6 log10 TCID50 reduction in infectious virus titer. At the highest nontoxic concentration, the S. ebulus extract led to inhibition rates of 91.2%, based on the quantitative real-time PCR assay results (p<0.001). Also, in the immunofluorescence assay, a significant reduction was observed in fluorescence emission intensity in HSV-1-infected cell treated with S. ebulus extract compared to the control group. Conclusion: S. ebulus extract is a novel and effective natural compound in reducing HSV-1 titer and future studies should be conducted to discover the complete mechanism of antiviral effect of this natural compound.
Collapse
Affiliation(s)
- Hadi Ghaffari
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
- Department of Bacteriology and Virology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Angila Ataei-Pirkooh
- Department of Medical Virology, Iran University of Medical Sciences, Tehran, Iran
| | - Sayid Mahdi Mirghazanfari
- Department of Physiology and Iranian Medicine, School of Medicine, AJA University of Medical Sciences, Tehran, Iran
| | - Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| |
Collapse
|
11
|
Alavije AA, Barati F, Barati M, Nazari H, Karimi I. Polyethersulfone/MWCNT nanocomposite scaffold for endometrial cell culture: preparation, characterization, and in vitroinvestigation. Biomed Phys Eng Express 2021; 7. [PMID: 35014622 DOI: 10.1088/2057-1976/abd67f] [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: 07/31/2020] [Accepted: 12/23/2020] [Indexed: 11/12/2022]
Abstract
Endometrial cell culture is a method for investigating physiological or pathological conditions or simulatingin vivoconditions for embryo culture. The natural function of the endometrium depends on a polarized epithelium and 3D stromal compartments. The polymer-based scaffolds of simple polyethersulfone (PES), laser scratched PES (PES-LS), and multiwall carbon nanotubes (MWCNT) composited PES (PES-MWCNT) were prepared and used for bovine endometrial cells (bECs) culture. For better investigation of the relationship between physical structure and cell growth behavior, the surface morphologies of the scaffolds were evaluated by atomic force microscopy (AFM) and field emission scanning electron microscopy (FESEM) techniques. Three synthesized membranes (PES, PES-LS, and PES-MWCNT) were evaluated for the cell morphology, viability and, doubling time. Results showed acceptable physical and chemical fabrication of the polymers with no significant differences in the proportions of live cells to primary cultured cells, dead to live cells, and the cell doubling time among groups during the experiment (P > 0.05). Total cell count (live and dead cells) was significantly different on Day 2 among types of polymers. The results showed the comparable potential of the PES-MWCNT membrane for the bECs culture.
Collapse
Affiliation(s)
- Ali Alirezaei Alavije
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
| | - Farid Barati
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
| | - Mohammad Barati
- Department of Applied Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran
| | - Hasan Nazari
- Institute of Farm Animal Embryo Technology, Shahrekord University, Shahrekord, Iran
| | - Iraj Karimi
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
| |
Collapse
|
12
|
Alizadeh A, Khankeh HR, Barati M, Ahmadi Y, Hadian A, Azizi M. Psychological distress among Iranian health-care providers exposed to coronavirus disease 2019 (COVID-19): a qualitative study. BMC Psychiatry 2020; 20:494. [PMID: 33028290 PMCID: PMC7538532 DOI: 10.1186/s12888-020-02889-2] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 09/21/2020] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Novel corona virus, named COVID-19, has spread rapidly to other countries like Italy, Iran and South Korea and affected all people, especially health-care providers. Therefore, due to the rapid spread of the disease in Iran, the aim of the present study was to explore psychological distress experienced by Iranian health-care providers in the first few weeks of the corona virus outbreak. METHODS The present qualitative study was conducted on 18 Iranian health-care providers exposed to COVID - 19 using a content analysis method. Purposeful sampling was used to select the participants and continued until data saturation was reached. Data were collected using semi-structured interviews and then the qualitative data were analyzed through direct content analysis. RESULTS By analyzing 236 primary codes, two main categories were extracted from the experiences of health-care providers during corona virus outbreak. The first category included Occupational demands with three sub-categories: nature of illness, Organizational demands and social demands. The second category was Supportive resources included personal support and social support. CONCLUSIONS The results of this study found that there were some barriers and challenges to medical personnel exposed to COVID-19 that caused psychological distress. Some of these problems related to the nature of illness, others related to social and organizational demands and some of supportive resources buffer the relationship between occupational demands and psychological distress.
Collapse
Affiliation(s)
- Azizeh Alizadeh
- NEZAJA Health Department, Assistance of Mental Health, Tehran, IR, Iran
| | - Hamid Reza Khankeh
- University of Social Welfare & Rehabilitation Sciences, Tehran, Iran
- Department of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden
| | - Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, IR, Iran
| | - Yazdan Ahmadi
- Faculty of Nursing, AJA University of Medical Sciences, Tehran, IR, Iran
| | - Arash Hadian
- Department of Clinical Psychology Hajar Hospital, Tehran, IR, Iran
| | - Maryam Azizi
- Faculty of Nursing, AJA University of Medical Sciences, Tehran, IR, Iran.
| |
Collapse
|
13
|
Barati H, Ayubi E, Iranpour S, Barati M, Allah-Abadi A, Hashemi Nazari SS. Time Series Analysis of Cutaneous Leishmaniasis in Sabzevar Northeastern Iran Using Segmented Regression Model. Int J Epidemiol Res 2020. [DOI: 10.34172/ijer.2020.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background and aims: Cutaneous leishmaniasis (CL) is one of the most important parasitic diseases in the world. Sabzevar city is endemic area for CL in the north east of Iran. The aim of this study was to evaluate the time distribution of cutaneous leishmaniasis (CL) in Sabzevar County using the segmented regression model. Methods: This ecological study used the existing data related to the rural districts of Sabzevar County that were obtained from the Health Deputy of this county during 2011-2017. In addition, the segmented regression model was applied to evaluate the time trend of CLs. Finally, Joinpoint software was used for time series analysis. Results: A total of 1912 CL cases occurred in Sabzevar County from 2011 to 2017, with an incidence rate of 93.61 per 100000. The highest and lowest observed incidence rates were in 2011 (25 per 10000 persons) and 2015 (3.24 per 10000 persons), respectively. Based on the results, the annual incidence of CL in the intended region decreased and the annual percent change was equal to -22.40. Further, the time series analysis using segmented regression by rural districts showed a change point in the trend of the incidence of leishmaniasis in three rural districts (Pain Joveyn and Joghatai in 2014 and Qasabeh-ye Sharqi in 2013). In other words, the trend was different before and after the change point in the mentioned districts. Conclusion: In general, the results indicated that interventional, preventive, and therapeutic measures for breaking the chain of CL transmission in Sabzevar have been desirable in recent years. Eventually, it is suggested that further time-series studies be conducted at the level of the month or a longer interval in order to better evaluate the period effect and secular trend.
Collapse
Affiliation(s)
- Hadis Barati
- Leishmaniasis Research Center, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Erfan Ayubi
- Department of Community Medicine, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Sohrab Iranpour
- Social Determinants of Health Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Ahmad Allah-Abadi
- Leishmaniasis Research Center, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | | |
Collapse
|
14
|
Foroutan M, Barati M, Ghaffarifar F. Enhancing immune responses by a novel multi-epitope ROP8 DNA vaccine plus interleukin-12 plasmid as a genetic adjuvant against acute Toxoplasma gondii infection in BALB/c mice. Microb Pathog 2020; 147:104435. [PMID: 32768514 DOI: 10.1016/j.micpath.2020.104435] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 06/26/2020] [Revised: 07/27/2020] [Accepted: 08/02/2020] [Indexed: 01/24/2023]
Abstract
BACKGROUND Toxoplasmosis is a widespread zoonotic infection, caused by an obligate intracellular protozoan. The infection is often asymptomatic in immunocompetent individuals, although in persons with impaired immune system may lead to severe and progressive complications. Constant attempts of scientists have made valuable findings in the development of Toxoplasma gondii (T. gondii) candidate vaccines. However, an effective vaccine has not been successfully developed yet. In the current study, we tested the co-delivery of a novel multi-epitope pcROP8 DNA vaccine with a plasmid encoding IL-12 (pcIL-12) to assess the immune responses in BALB/c mice against acute T. gondii infection. METHODS BALB/c mice were immunized on days 0, 21, and 42. The immune responses of both vaccinated and control groups were evaluated using cytokine and antibody measurements, lymphocyte proliferation assay, and survival time. RESULTS The findings demonstrated that immunization with multi-epitope pcROP8 significantly enhanced the level of anti-T. gondii antibodies, TH1-type cellular immune responses, lymphocyte proliferation, and prolonged survival time, compared to control groups (P < 0.05). Furthermore, the use of pcIL-12 as a genetic adjuvant led to enhancements of the above-mentioned immune responses in BALB/c mice (P < 0.05). CONCLUSIONS The co-administration of pcIL-12 with multi-epitope pcROP8 vaccine, could successfully enhance the level of protection. Thus, this immunization regimen may represent an effective vaccine strategy against acute T. gondii infection.
Collapse
Affiliation(s)
- Masoud Foroutan
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran.
| | - Fatemeh Ghaffarifar
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| |
Collapse
|
15
|
|
16
|
Bashirian S, Jenabi E, Khazaei S, Barati M, Karimi-Shahanjarini A, Zareian S, Rezapur-Shahkolai F, Moeini B. Factors associated with preventive behaviours of COVID-19 among hospital staff in Iran in 2020: an application of the Protection Motivation Theory. J Hosp Infect 2020; 105:430-433. [PMID: 32360337 PMCID: PMC7194681 DOI: 10.1016/j.jhin.2020.04.035] [Citation(s) in RCA: 129] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 04/23/2020] [Indexed: 12/22/2022]
Abstract
This study was conducted to predict the preventive behaviours of healthcare workers (HCWs) towards COVID-19 based on the Protection Motivation Theory (PMT). This cross-sectional and analytical study was conducted on 761 HCWs in Hamadan, Iran, using multi-stage random sampling. The preventive behaviours against COVID-19 among HCWs were assessed at a relatively desirable level. Based on the PMT, threat and coping appraisal were predictors of protection motivation to conduct COVID-19 preventive behaviours (P<0.001). The intention was also predictive of COVID-19 preventive behaviours (P<0.001). Consideration of personnel's self-efficacy and their knowledge regarding the effectiveness of protective behaviours in designing staff training programmes are recommended.
Collapse
Affiliation(s)
- S Bashirian
- Social Determinants of Health Research Center, Hamadan University of Medical Sciences, Hamadan, IR Iran
| | - E Jenabi
- Social Determinants of Health Research Center, Hamadan University of Medical Sciences, Hamadan, IR Iran
| | - S Khazaei
- Social Determinants of Health Research Center, Hamadan University of Medical Sciences, Hamadan, IR Iran
| | - M Barati
- Social Determinants of Health Research Center, Hamadan University of Medical Sciences, Hamadan, IR Iran
| | - A Karimi-Shahanjarini
- Social Determinants of Health Research Center, Hamadan University of Medical Sciences, Hamadan, IR Iran
| | - S Zareian
- Social Determinants of Health Research Center, Hamadan University of Medical Sciences, Hamadan, IR Iran
| | - F Rezapur-Shahkolai
- Social Determinants of Health Research Center, Hamadan University of Medical Sciences, Hamadan, IR Iran
| | - B Moeini
- Social Determinants of Health Research Center, Hamadan University of Medical Sciences, Hamadan, IR Iran
| |
Collapse
|
17
|
Esboei BR, Fakhar M, Saberi R, Barati M, Moslemi M, Hassannia H, Dadimoghadam Y, Jalallou N. Genotyping and phylogenic study of Acanthamoeba isolates from human keratitis and swimming pool water samples in Iran. Parasite Epidemiol Control 2020; 11:e00164. [PMID: 32671234 PMCID: PMC7341446 DOI: 10.1016/j.parepi.2020.e00164] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 01/27/2020] [Revised: 05/09/2020] [Accepted: 06/23/2020] [Indexed: 11/29/2022] Open
Abstract
Objective Acanthamoeba keratitis cause severe corneal infection and lead to poor vision and blindness. This disease is caused by a unicellular amphizoic protozoon called Acanthamoeba spp. that present in different environments. This study aimed to represent the existence and genotyping of Acanthamoeba spp. in patients with keratitis and swimming pool water (SPW) in Tehran Province, Central Iran. Methods In this descriptive study, 56 clinical samples were collected from patients with keratitis and 30 water samples were collected from different swimming pools in Tehran Province. All samples were examined based on the morphological and molecular techniques. The genotypes were determined by sequencing the partial of 18S rRNA gene. Results Of 56 clinical (corneal) and 30 environmental (SPW) samples, 30.3% and 40.0% were positive for Acanthamoeba spp., respectively. According to sequencing analysis, 94.1% of amoebic keratitis isolates were belonged to T4 genotype and only one (5.8%) isolate was belonged to T11 genotype. All genotypes were detected from SPW samples were identified as T4 genotype. Conclusion According to our results, use of contact lens and swimming in pool poses the major risk factor for amoebic keratitis in the studied area (Tehran). Moreover, T4 genotype was the predominant genotype of human keratitis and swimming pool samples there. Consequently, essential and practical measures are urgently needed to prevent subjects against this ocular seriously disease.
Collapse
Affiliation(s)
- Bahman Rahimi Esboei
- Department of Laboratory Sciences, School of Paramedicine, AJA University of Medical Sciences, Tehran, Iran.,Department of Microbiology, School of Medicine, Islamic Azad University, Tonekabon Branch, Tonekabon, Iran.,Toxoplasma Research Center, Department of Parasitology, Iranian National Registry Center for Toxoplasmosis (INRCT), School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mahdi Fakhar
- Toxoplasma Research Center, Department of Parasitology, Iranian National Registry Center for Toxoplasmosis (INRCT), School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Iranian National Registry Center for Lophomoniasis (INRCL), Imam Khomeini Hospital, Mazandaran University of Medical Sciences, Sari, Iran
| | - Reza Saberi
- Student Research Committee, Mazandaran University of Medical Science, Sari, Iran.,Toxoplasma Research Center, Department of Parasitology, Iranian National Registry Center for Toxoplasmosis (INRCT), School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Masoumeh Moslemi
- Department of Medical Genetics and Molecular Biology, Faculty of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Hadi Hassannia
- Immunogenetic Research Center, Faculty of Medicine and Amol Faculty of Paramedical Sciences, Mazandaran University of Medical Sciences, Sari, Iran
| | - Yousef Dadimoghadam
- Student Research Committee, Mazandaran University of Medical Science, Sari, Iran
| | - Nahid Jalallou
- Department of Laboratory Sciences, School of Paramedicine, AJA University of Medical Sciences, Tehran, Iran
| |
Collapse
|
18
|
Abstract
Background: There is a growing interest in development of an effective adjuvant system for improving DNA vaccines. Recent findings have confirmed an important role for autophagy in both innate and adaptive immunity. The current study was undertaken to determine the efficacy of autophagy induction with Beclin-1, as a novel adjuvant system, in mice immunized with human papilloma virus (HPV) DNA vaccine. Methods: To determine whether autophagy induction with Beclin-1 enhances the efficacy of HPV DNA vaccine, female C57BL/6 mice were challenged with TC-1 tumor cells and were immunized three times at one-week intervals. Two weeks after the final immunization, the mice were sacrificed, and the antitumor effects were assessed by measurement of lymphocyte proliferation, cytotoxicity, cytokine production, and tumor regression. Results: Beclin-1 in combination with HPV-16 DNA vaccine encoding the E7 antigen induced a higher level of lymphocyte proliferation and cytotoxicity than the DNA vaccine alone. The novel combination increased the production of IFN-γ and highly inhibited tumor progression in comparison with DNA vaccine alone. Conclusion: Administration of Beclin-1, as an autophagy inducer, with HPV DNA vaccine produces antitumor effects, providing an effective adjuvant for the induction of a strong antitumor immune response.
Collapse
Affiliation(s)
- Hamed Naziri
- Department of Immunology, School of Medicine, Aja University of Medical Sciences, Tehran, Iran
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Tahamtan
- Infectious Diseases Research Centre, Golestan University of Medical Sciences, Gorgan, Iran
- Department of Microbiology, Golestan University of Medical Sciences, Gorgan, Iran
| | - Maryam Dadmanesh
- Department of Infectious Diseases, School of Medicine, Aja University of Medical Sciences, Tehran, Iran
| | - Mohammad Barati
- Infectious Diseases Research Center, Aja University of Medical Sciences, Tehran, Iran
| | - Khodayar Ghorban
- Department of Immunology, School of Medicine, Aja University of Medical Sciences, Tehran, Iran
- Corresponding Author: Khodayar Ghorban , Department of Immunology, School of Medicine, Aja University of Medical Sciences, Tehran, Iran; Mobile: (+98-21) 77376547; Fax: (+98-21) 77376547; E-mail:
| |
Collapse
|
19
|
Alirezaie Alavijeh A, Barati M, Barati M, Abbasi Dehkordi H. The Potential of Magnetic Nanoparticles for Diagnosis and Treatment of Cancer Based on Body Magnetic Field and Organ-on-the-Chip. Adv Pharm Bull 2019; 9:360-373. [PMID: 31592054 PMCID: PMC6773933 DOI: 10.15171/apb.2019.043] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 12/17/2018] [Revised: 05/18/2019] [Accepted: 05/20/2019] [Indexed: 12/12/2022] Open
Abstract
Cancer is an abnormal cell growth which tends to proliferate in an uncontrolled way and, in some cases, leads to metastasis. If cancer is left untreated, it can immediately cause death. The use of magnetic nanoparticles (MNPs) as a drug delivery system will enable drugs to target tissues and cell types precisely. This study describes usual strategies and consideration for the synthesis of MNPs and incorporates payload drug on MNPs. They have advantages such as visual targeting and delivering which will be discussed in this review. In addition, we considered body magnetic field to make drug delivery process more effective and safer by the application of MNPs and tumor-on-chip.
Collapse
Affiliation(s)
- Ali Alirezaie Alavijeh
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
| | - Mohammad Barati
- Department of Applied Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran
| | - Meisam Barati
- Student Research Committee, Department of Cellular and Molecular Nutrition, Faculty of Nutrition and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hussein Abbasi Dehkordi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
| |
Collapse
|
20
|
Ebrahimipour M, Afgar A, Barati M, Mohammadi MA, Harandi MF. Evaluation of the antigenic epitopes of EgAgB/1 and EgAgB/4 subunit antigens in G1 and G6 genotypes of Echinococcus granulosus using bioinformatics. Gene Reports 2019. [DOI: 10.1016/j.genrep.2019.01.002] [Citation(s) in RCA: 2] [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: 01/08/2023]
|
21
|
Tahamtan A, Barati M, Tabarraei A, Mohebbi SR, Shirian S, Gorji A, Ghaemi A. Antitumor Immunity Induced by Genetic Immunization with Chitosan Nanoparticle Formulated Adjuvanted for HPV-16 E7 DNA Vaccine. Iran J Immunol 2019; 15:269-280. [PMID: 30593741 DOI: 10.22034/iji.2018.39396] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND In recent years attention has been paid to develop effective adjuvant systems for DNA vaccines. Co-formulation of a gene delivery vector with an immunostimulator can enhance therapeutic efficiency of DNA vaccine. OBJECTIVE To investigate the efficacy of chitosan as a nanodelivery system to enhance antitumor effects of human papilloma virus (HPV)-16 DNA vaccine with IL-12 gene for protection against TC-1 tumor using an animal model. METHODS The mice were challenged by subcutaneous injection of TC-1 cells and immunized intramuscularly with DNA vaccine thrice at seven-day intervals. One week after the last immunization, mice were sacrificed and antitumor effects were assessed through measuring lymphocyte proliferation, cytotoxicity, cytokines production, and tumor regression. RESULTS We found that co-formulation and co-administration of chitosan nanoparticles and IL-12 with HPV-16 E7 DNA vaccine induced higher antitumor effects compared with chitosan or IL-12 alone. E7-specific lymphocyte proliferation index and CTL activity were found to be significantly higher in combination group in comparison to single vaccination with either chitosan or IL-12. Co-formulation of chitosan and IL-12 resulted in higher IFN-γ and IL-4, and decreased IL-10 production. Furthermore, combined vaccination highly inhibited the tumor progression compared with chitosan or IL-12 alone. CONCLUSION Chitosan nanoparticle is a promising delivery system for DNA vaccine and IL-12 is an effective genetic adjuvant for the induction of strong antitumor immune response.
Collapse
Affiliation(s)
- Alireza Tahamtan
- Infectious Diseases Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | | | | | | | | | | | | |
Collapse
|
22
|
Mirzaie Z, Reisi-Vanani A, Barati M. Polyvinyl alcohol-sodium alginate blend, composited with 3D-graphene oxide as a controlled release system for curcumin. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.02.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
23
|
Ebrahimipour M, Rezaeian S, Shirzadi MR, Barati M. Prevalence and risk factors associated with human cystic echinococcosis in Iran. J Parasit Dis 2019; 43:385-392. [PMID: 31406403 DOI: 10.1007/s12639-019-01102-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 01/07/2019] [Accepted: 03/01/2019] [Indexed: 11/29/2022] Open
Abstract
Cystic echinococcosis (CE), as a zoonotic helminthic infection, imposes a large socioeconomic burden to societies throughout the world. This study aimed to analyze the demographic, clinical, diagnostic and therapeutic data of CE patients across all provinces in Iran. In this cross-sectional study, the mentioned data were routinely collected by provincial medical universities during the time from March 2016 to March 2017. The provincial population census was used to calculate the prevalence of CE per 1,000,000 populations for all provinces. T test and Chi squared test were used to compare variables between genders. Statistical analysis was done at 95% significant level using STATA 14 software. The overall prevalence of CE was 6.8 cases per 1,000,000 populations in Iran. The highest and lowest prevalence was reported for Northeast (15.2) and southeast (0.7) of Iran, respectively. There was a significant difference in the prevalence between male and female (5.8 vs. 7.9, p < 0.001). An increasing trend of the prevalence was found by age in both males and females. Abdominal pain was reported as the highest proportion of symptom (39.0%) and the liver was a commonly infected organ (62.7%). CT scan (39.0%) and MRI (1.9%) had the highest and lowest proportion among types of CE diagnosis, respectively. About 67% of the patients washed the vegetable by water without any disinfectant. Due to global efforts on the control and prevention of CE, it still remains endemic in many countries throughout the world. Incidence trend of CE in Iran showed being endemic for CE and more investigations are needed on all aspects of the disease.
Collapse
Affiliation(s)
- Mohammad Ebrahimipour
- 1Research Center for Hydatid Disease in Iran, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Shahab Rezaeian
- 2Infectious Diseases Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Reza Shirzadi
- 3Research Center of Endemic Parasitic Diseases, Tehran University of Medical Sciences, Tehran, Iran.,Center for Communicable Diseases Control, MOH, Tehran, Iran
| | - Mohammad Barati
- 5Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| |
Collapse
|
24
|
Abstract
Toxoplasmosis is an opportunistic infectious disease in immunocompromised patients, including cancer patients, whose detection is by molecular and serological methods. A total of 106 blood samples from patients with different types of cancer were evaluated for anti- Toxoplasma gondii IgG and IgM antibodies by the enzyme-linked immunosorbent assay (ELISA) and the parasite DNA by nested polymerase chain reaction (PCR). These were detected in 41.51% (44/106) and 0.94% (1/106), respectively, but T. gondii IgM antibody was not detected at all. These results suggest that the screening of toxoplasmosis should be considered more routinely in cancer patients.
Collapse
Affiliation(s)
- Amir Abdoli
- 1 Assistant professor, Department of Parasitology and Mycology, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran.,2 Assistant professor, Research Center for Noncommunicable Diseases, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Mohammad Barati
- 3 Assistant professor, Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Majid Pirestani
- 4 Assistant professor, Department of Parasitology, Faculty of Medical Sciences, TarbiatModares University, Tehran, Iran
| | - Abdolhossein Dalimi
- 5 Professor, Department of Parasitology, Faculty of Medical Sciences, TarbiatModares University, Tehran, Iran
| |
Collapse
|
25
|
Babaie J, Barati M, Azizi M, Ephtekhari A, Sadat SJ. A systematic evidence review of the effect of climate change on malaria in Iran. J Parasit Dis 2018; 42:331-340. [PMID: 30166779 PMCID: PMC6104236 DOI: 10.1007/s12639-018-1017-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 07/03/2018] [Indexed: 11/26/2022] Open
Abstract
Climate is an effective factor in the ecological structure which plays an important role in control and outbreak of the diseases caused by biological factors like malaria. With regard to the occurring climatic change, this study aimed to review the effects of climate change on malaria in Iran. In this systematic review, Cochrane, PubMed and ScienceDirect (as international databases), SID and Magiran as Persian databases were investigated through MESH keywords including climate change, global warming, malaria, Anopheles, and Iran. The related articles were screened and finally their results were extracted using data extraction sheets. Totally 41 papers were resulted through databases searching process. Finally 14 papers which met inclusion criteria were included in data extraction stage. The findings indicated that Anopheles mosquitoes are present at least in 115 places in Iran; they are compatible with climatic zones of Iran. Malaria and it's vectors are affected by climate change. Temperature, precipitation, relative humidity, wind intensity and direction are the most important climatic factors affecting the growth and proliferation of Anopheles, Plasmodium and the prevalence of malaria. The transmission of malaria in Iran is associated with the climatic factors of temperature, rainfall, and humidity. Therefore, with regard to the occurring climatic change, the incidence of the disease may also change which needs to be taken into consideration while planning of malaria control.
Collapse
Affiliation(s)
- Javad Babaie
- Iranian Center of Excellence in Health Management, School of Management and Medical Informatics, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Barati
- Infectious Diseases Research Center, Aja University of Medical Sciences, Tehran, Iran
| | - Maryam Azizi
- Department of Health in Disaster and Emergency, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Adel Ephtekhari
- Department of Health in Disaster and Emergency, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Seyed Javad Sadat
- Department of Health in Disaster and Emergency, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Social Determinants of Health Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| |
Collapse
|
26
|
Barati M, Vazifehshenas T, Salavati-Fard T, Farmanbar M. Phononic thermal conductivity in silicene: the role of vacancy defects and boundary scattering. J Phys Condens Matter 2018; 30:155307. [PMID: 29504943 DOI: 10.1088/1361-648x/aab422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We calculate the thermal conductivity of free-standing silicene using the phonon Boltzmann transport equation within the relaxation time approximation. In this calculation, we investigate the effects of sample size and different scattering mechanisms such as phonon-phonon, phonon-boundary, phonon-isotope and phonon-vacancy defect. We obtain some similar results to earlier works using a different model and provide a more detailed analysis of the phonon conduction behavior and various mode contributions. We show that the dominant contribution to the thermal conductivity of silicene, which originates from the in-plane acoustic branches, is about 70% at room temperature and this contribution becomes larger by considering vacancy defects. Our results indicate that while the thermal conductivity of silicene is significantly suppressed by the vacancy defects, the effect of isotopes on the phononic transport is small. Our calculations demonstrate that by removing only one of every 400 silicon atoms, a substantial reduction of about 58% in thermal conductivity is achieved. Furthermore, we find that the phonon-boundary scattering is important in defectless and small-size silicene samples, especially at low temperatures.
Collapse
Affiliation(s)
- M Barati
- Department of Physics, Shahid Beheshti University, G. C., Evin, Tehran 1983969411, Iran
| | | | | | | |
Collapse
|
27
|
Ayubi E, Barati M, Dabbagh Moghaddam A, Reza Khoshdel A. Spatial modeling of cutaneous leishmaniasis in Iranian army units during 2014-2017 using a hierarchical Bayesian method and the spatial scan statistic. Epidemiol Health 2018; 40:e2018032. [PMID: 30056641 PMCID: PMC6186865 DOI: 10.4178/epih.e2018032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 07/13/2018] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVES This study aimed to map the incidence of cutaneous leishmaniasis (CL) in Iranian army units (IAUs) and to identify possible spatial clusters. METHODS This ecological study investigated incident cases of CL between 2014 and 2017. CL data were extracted from the CL registry maintained by the deputy of health of AJA University of Medical Sciences. The standardized incidence ratio (SIR) of CL was computed with a Besag, York, and Mollié model. The purely spatial scan statistic was employed to detect the most likely highand low-rate clusters and to obtain the observed-to-expected (O/E) ratio for each detected cluster. The statistical significance of the clusters was assessed using the log likelihood ratio (LLR) test and Monte Carlo hypothesis testing. RESULTS A total of 1,144 new CL cases occurred in IAUs from 2014 to 2017, with an incidence rate of 260 per 100,000. Isfahan and Khuzestan Provinces were found to have more CL cases than expected in all studied years (SIR>1), while Kermanshah, Kerman, and Fars Provinces were observed to have been high-risk areas in only some years of the study period. The most significant CL cluster was in Kermanshah Province (O/E, 67.88; LLR, 1,200.62; p<0.001), followed by clusters in Isfahan Province (O/E, 6.02; LLR, 513.24; p<0.001) and Khuzestan Province (O/E, 2.35; LLR, 73.71; p<0.001), while low-rate clusters were located in the northeast areas, including Razavi Khorasan, North Khorasan, Semnan, and Golestan Provinces (O/E, 0.03; LLR, 95.11; p<0.001). CONCLUSIONS This study identified high-risk areas for CL. These findings have public health implications and should be considered when planning control interventions among IAUs.
Collapse
Affiliation(s)
- Erfan Ayubi
- Modern Epidemiology Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Arasb Dabbagh Moghaddam
- Department of Preventive Medicine, Deputy of Health, AJA University of Medical Sciences, Tehran, Iran
| | - Ali Reza Khoshdel
- Modern Epidemiology Research Center, AJA University of Medical Sciences, Tehran, Iran
- Correspondence: Ali Reza Khoshdel Modern Epidemiology Research Center, AJA University of Medical Sciences, Fatemi St., Shahid Etemadzadeh St., Tehran 1411718541, Iran E-mail:
| |
Collapse
|
28
|
Pakzad R, Dabbagh-Moghaddam A, Mohebali M, Safiri S, Barati M. Spatio-temporal analysis of cutaneous leishmaniasis using geographic information system among Iranian Army Units and its comparison with the general population of Iran during 2005-2014. J Parasit Dis 2017; 41:1114-1122. [PMID: 29114151 PMCID: PMC5660044 DOI: 10.1007/s12639-017-0944-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 05/08/2017] [Accepted: 07/13/2017] [Indexed: 10/19/2022] Open
Abstract
To investigate the time trend and distribution of cutaneous leishmaniasis in Iranian Army Units (IAUs) and general population (GP). with using census, Data on CL incidence in IAUs (from AJA University of Medical Sciences) and GP (from Ministry of Health) during 2005-2014 were extracted and entered into the GIS software. Cochran-Armitage test, choropleth map, hot-spot analysis and high/low clustering analysis were used to determine time trend, distribution of disease, hot-spots, and possible abnormal clustering, respectively. The number of infected individuals in IAUs and GP were 6533 and 153,499 respectively (with incidence rates of 143.68 per 100,000 and 25.86 per 100,000, respectively). Time trend analysis revealed the departure from linear trend for the incidence in IAUs (p < 0.001), but no such time trend was found in GP. According to choropleth maps; in IAUs, Khozestan from southwest, Esfahan from central and Kermanshah from west parts of Iran and among GP; Fars, Yazd, and Kerman in southern-east of Iran showed a high incidence rates. In IAUs, Esfahan and Khuzestan provinces was hot-spots of CL (p < 0.05), but in GP, provinces like Fars and Khorasan-shomali was hot-spots (p < 0.05). No clustering pattern of disease was observed in either study populations. Observed spatiotemporal variability in CL among IAUs and GP warrants proper health programs particularly to Khozestan and Esfahan in IAUs and Fars and Khorasan-shomali in GP are highly recommended.
Collapse
Affiliation(s)
- Reza Pakzad
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| | | | - Mehdi Mohebali
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeid Safiri
- Managerial Epidemiology Research Center, Department of Public Health, School of Nursing and Midwifery, Maragheh University of Medical Sciences, Maragheh, Iran
| | - Mohammad Barati
- Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran
| |
Collapse
|
29
|
|
30
|
Razmi G, Barati M. Prevalence of Neospora caninum and Toxoplasma gondii Antibodies in Bulk Milk of Dairy Cattle, Mashhad, Iran. Arch Razi Inst 2016; 72:265-269. [PMID: 30315704 DOI: 10.22092/ari.2017.113304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 10/04/2016] [Indexed: 09/30/2022]
Abstract
Neospora caninum (N. caninum) and Toxoplasma gondii (T. gondii) are both obligate intracellular protozoan parasites, which have gained considerable attention because of their role in bovine abortion. This study aimed to detect anti-N. caninum and -T. gondii in bulk milk of dairy cattle, Mashhad, Iran. The bulk milk samples were collected from July 2014 to June 2015 and analyzed for anti-N. caninum and -T.gondii antibodies using enzyme-linked immunosorbent assay (ELISA). Out of 123 bulk milk samples, 44 (35%), 14 (11.38%), and 3 (2.4%) samples had N. caninum, T. gondii, and mixed infection with these two parasites, respectively. According to the results, the prevalence of N. caninum infection was more than T.gondii infection in dairy cattle of Mashhad, Iran.
Collapse
Affiliation(s)
- Gh Razmi
- Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran.,Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
| | - M Barati
- Department of Food Hygiene and Aquaculture, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
| |
Collapse
|
31
|
Dalimi A, Jameie F, Mohammadiha A, Barati M, Molaei S. Molecular Detection of Hepatozoon canis in Dogs of Ardabil Province, Northwest of Iran. Arch Razi Inst 2016; 72:197-201. [PMID: 30341941 DOI: 10.22034/ari.2017.108389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 09/18/2016] [Indexed: 11/27/2022]
Abstract
Hepatozoon species are protozoan parasites that infect some animals such as birds, reptiles, amphibians, and carnivores. Previous studies performed on canine hepatozoonosis in Iran have never used molecular techniques for diagnosis of this disease. The main objective of the present study was to detect Hepatozoon canis in the blood of dogs using polymerase chain reaction (PCR) method and sequencing. A total of 104 blood samples were collected from dogs of Meshginshahr County (Ardabil Province), and DNA was extracted from blood samples by dint of DNG-plus Extraction Kit. Then, 18S rRNA gene was amplified by using the conventional PCR methods. PCR products yielded an amplicon of the approximate length of 897 bp for all the positive samples. Twenty-four out of the 104 (23.07%) samples were found to be positive for H. canis. This rate of infection is relatively high among dogs in Ardabil Province. Sequence analysis confirmed the molecular identity of 99% of the samples by comparison with GenBank profiles. This is the first report of molecular detection of H. canis from Iran.
Collapse
Affiliation(s)
- A Dalimi
- Department of Parasitology and Entomology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.,Department of Parasitology and Entomology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - F Jameie
- Department of Parasitology and Entomology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - A Mohammadiha
- Department of Parasitology and Entomology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - M Barati
- Infectious Diseases Research Center, Aja University of Medical Sciences, Tehran, Iran
| | - S Molaei
- Department of Parasitology and Entomology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| |
Collapse
|
32
|
Modiri-Delshad M, Barati M, Abd Rahim N. Economic power dispatch in microgrids through backtracking search algorithm. 4th IET Clean Energy and Technology Conference (CEAT 2016) 2016. [DOI: 10.1049/cp.2016.1326] [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] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
|
33
|
Mehrani R, Barati M, Tavasoli A, Karimi A. Hydrogen production via supercritical water gasification of bagasse using Ni-Cu/γ-Al2O3 nano-catalysts. Environ Technol 2015; 36:1265-1272. [PMID: 25387488 DOI: 10.1080/09593330.2014.984771] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Biomass gasification in supercritical water media is a promising method for the production of hydrogen. In this research, Cu-promoted Ni/γ-Al2O3 nano-catalysts were prepared with 2.5-30 wt% Ni and 0.6-7.5 wt% Cu loadings via the microemulsion method. Nano-catalysts were characterized by inductively coupled plasma (ICP), Brunauer Emmett Teller (BET) technique, X-Ray Diffraction (XRD), H2 chemisorption and Transmission Electron Microscopy (TEM) technique, as well as Carbon-Hydrogen-Nitrogen-Sulfur (CHNS) analysis was carried out for elemental analysis of bagasse. Nano-catalysts were assessed in a batch micro-reactor under 400°C and 240 bar. The microemulsion method decreased the catalyst average particle size and increased the percentage dispersion and reduction of the catalysts. The total gas yield increased with an increase in Ni and Cu loadings up to 20 wt% Ni and 5 wt% Cu and then started to decrease. Using the microemulsion technique for the preparation of Ni-Cu/γ-Al2O3 nano-catalyst, increased the hydrogen yield to 11.76 (mmol of H2/g of bagasse), CO yield to 2.67 (mmol of CO/g of bagasse) and light gaseous hydrocarbons to 0.6 (mmol of light gaseous hydrocarbons/g of bagasse). Promotion of Ni/γ-Al2O3 with copper increased the mole fraction of hydrogen in the final gasification products to 58.1 mol%.
Collapse
Affiliation(s)
- Reza Mehrani
- a School of Chemistry, College of Science , University of Tehran , Tehran , Iran
| | | | | | | |
Collapse
|
34
|
Ahmadi-hamedani M, Ghazvinian K, Kokhaei P, Barati M, Mahdavi A. Comparison of effects of age and sex on serum protein electrophoretic pattern in one-humped camels (Camelus dromedarius) in Semnan, Iran. Open Vet J 2014; 4:4-8. [PMID: 26623331 PMCID: PMC4629590] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Accepted: 01/26/2014] [Indexed: 11/28/2022] Open
Abstract
The aim of this study was to evaluate the influence of age and sex on the concentration of total serum protein measured by the biuret method and protein fractions determined using cellulose acetate electrophoresis in apparently healthy camels (Camelus dromedarius). Blood samples were collected from 21 camels (12 males and 9 females). The camels were further divided into two groups: 12 young camels at the age of 3 months to 2 years and 9 adult camels at the age of 3-15 years. Cellulose acetate electrophoresis of serum proteins identified five protein fractions in adult camels as young camels, these five protein fractions include albumin, α1 and α2, β and γ-globulins. In adult camels, serum levels (g/l) of total protein, albumin, α1-globulins, α2-globulins, β-globulins and γ-globulins were 80.9±3.10, 42.9±3.10, 1.3±0.22, 2.2±0.30, 11.8±0.30 and 22.6±0.20, respectively. However, in young camels, these levels (g/l) were 66.8±2.90, 40.2±2.40, 1.0±0.14, 2.6±0.30, 10.6±0.80 and 12.3±1.20, respectively. The albumin/globulin (A/G) ratio was 2.08±0.28 in adult camels and 3.77±0.53 in young ones. The mean serum concentrations of total protein and γ-globulins were significantly (P<0.05) higher and the A/G ratio was significantly lower in adult camels compared to young camels. The mean concentrations of γ-globulins were significantly higher and the A/G ratio was significantly (P<0.05) lower in females compared to male camels. The results of the present study indicate a significant effect of age and sex on the concentrations of some of the serum protein fractions in dromedary camels.
Collapse
Affiliation(s)
- M. Ahmadi-hamedani
- Department of Pathobiology, Faculty of Veterinary Medicine, Semnan University, Semnan, Iran,Corresponding Author: Mahmood Ahmadi-hamedani. Faculty of Veterinary Medicine, Semnan University, Semnan, Iran. Tel.: +98 (232)3664891. Fax: +98 (232)3664891.
| | - K. Ghazvinian
- Department of Animal Sciences and Food Industries, Faculty of Veterinary Medicine, Semnan University, Semnan, Iran
| | - P. Kokhaei
- Department of Immunology, Semnan University of Medical Sciences, Semnan, Iran,Immune and Gene Therapy Lab. CCK, Karolinska University Hospital Solna, Stockholm, Sweden
| | - M. Barati
- Department of Immunology, Semnan University of Medical Sciences, Semnan, Iran
| | - A. Mahdavi
- Department of Animal Sciences and Food Industries, Faculty of Veterinary Medicine, Semnan University, Semnan, Iran
| |
Collapse
|
35
|
Barati M, Sharifi I, Daie Parizi M, Fasihi Harandi M. Bacterial infections in children with visceral leishmaniasis: observations made in Kerman province, southern Iran, between 1997 and 2007. Annals of Tropical Medicine & Parasitology 2013; 102:635-41. [DOI: 10.1179/136485908x311858] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
36
|
|
37
|
Barati M, Keshavarz-valian H, Habibi-nokhandan M, Raeisi A, Faraji L, Salahi-moghaddam A. Spatial outline of malaria transmission in Iran. ASIAN PAC J TROP MED 2013; 5:789-95. [PMID: 23043918 DOI: 10.1016/s1995-7645(12)60145-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2012] [Revised: 03/09/2012] [Accepted: 03/15/2012] [Indexed: 10/27/2022] Open
Abstract
OBJECTIVE To conduct for modeling spatial distribution of malaria transmission in Iran. METHODS Records of all malaria cases from the period 2008-2010 in Iran were retrieved for malaria control department, MOH&ME. Metrological data including annual rainfall, maximum and minimum temperature, relative humidity, altitude, demographic, districts border shapefiles, and NDVI images received from Iranian Climatologic Research Center. Data arranged in ArcGIS. RESULTS 99.65% of malaria transmission cases were focused in southeast part of Iran. These transmissions had statistically correlation with altitude (650 m), maximum (30 °C), minimum (20 °C) and average temperature (25.3 °C). Statistical correlation and overall relationship between NDVI (118.81), relative humidity (⩾45%) and rainfall in southeast area was defined and explained in this study. CONCLUSIONS According to ecological condition and mentioned cut-off points, predictive map was generated using cokriging method.
Collapse
Affiliation(s)
- Mohammad Barati
- Department of Medical Parasitology and Mycology, Tehran University of Medical Sciences, Bandar Abbas, Iran
| | | | | | | | | | | |
Collapse
|
38
|
|
39
|
Noorbakhsh S, Barati M, Farhadi M, Mousavi J, Zarabi V, Tabatabaei A. Intensive Care Unit nosocomial sinusitis at the Rasoul Akram Hospital: Tehran, Iran, 2007-2008. Iran J Microbiol 2012; 4:146-9. [PMID: 23066490 PMCID: PMC3465541] [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: 11/23/2022]
Abstract
BACKGROUND Nosocomial rhino sinusitis causes major problems in all Intensive Care Units (ICUs). OBJECTIVE To describe incidence, epidemiologic, clinical manifestations, and microbiologic findings in ICUs admitted cases with nosocomial sinusitis. METHODS#ENTITYSTARTX00026; MATERIALS A prospective, cross sectional study done in Pediatric & Adult ICUs in Rasoul Akram Hospital; Tehran Iran (2007-2008). Para-nasal sinus computed tomography (CT) was performed in all adults with fever of unknown origin (FUO) within 48h of admission and repeated thereafter (4-7 days). Infectious sinusitis was diagnosed by microbiological analysis of sinus fluid aspirates. RESULTS Acute bacterial nosocomial sinusitis proved in 82% (51/ 63) of all cases. Head trauma was the most common cause; (n = 22, 45%) of cases. The results of culture were positive for 45 cases (82%). Of 45 culture positives, 19 yielded Gram negative organisms (41%) and 9 (22%) gave Gram positives (S. aureous, Streptococus spp). The remainders (n = 17, 37%) consisted of mixed aerobic/anaerobic bacteria. Seven cases, were positive in gram staining of sinus drainage and these were positive in culture for S. pneumonia (n = 5), Hemophilus influenza (n = 2). The type of organisms were not related to Glasgow Coma Scale in cases (P = 0.3). CONCLUSION Nosocomial organisms isolated were quite different from community acquired rhino sinusitis cases. Investigation of CT scan and drainage of Para-nasal sinuses would be helpful in undiagnosed FUO cases, especially in traumatic patients. Optimal treatment usually consists of removal of the tubes, mobilizing the patient, and administration the broad-spectrum antibiotics.
Collapse
Affiliation(s)
- S Noorbakhsh
- Research Center of Pediatric Infectious Diseases, Rasoul Akram Hospital, Tehran University of Medical Sciences, Corresponding author: Dr. Samileh Noorbakhsh, Address: Research Center of Pediatric Infectious Disease, Rasoul Akram hospital, Satarkhan Ave, Nyayesh St, Tehran, Iran. Tel: +98-21-66525328. Fax: +98-21-66516049. E-mail:
| | - M Barati
- Research Center of Pediatric Infectious Diseases, Rasoul Akram Hospital, Tehran University of Medical Sciences
| | - M Farhadi
- Research Center for Diseases of Ear, Nose and Throat, Rasoul Akram Hospital, Tehran University of Medical Sciences
| | - J Mousavi
- Research Center of Pediatric Infectious Diseases, Rasoul Akram Hospital, Tehran University of Medical Sciences
| | - V Zarabi
- Research Center of Pediatric Infectious Diseases, Rasoul Akram Hospital, Tehran University of Medical Sciences
| | - A Tabatabaei
- Research Center of Pediatric Infectious Diseases, Rasoul Akram Hospital, Tehran University of Medical Sciences
| |
Collapse
|
40
|
Noorbakhsh S, Mousavi J, Barati M, Shamshiri A, Shekarabi M, Tabatabaei A, Soleimani G. Evaluation of an interferon-gamma release assay in young contacts of active tuberculosis cases. East Mediterr Health J 2011. [DOI: 10.26719/2011.17.9.714] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
41
|
Noorbakhsh S, Mousavi J, Barati M, Shamshiri AR, Shekarabi M, Tabatabaei A, Soleimani G. Evaluation of an interferon-gamma release assay in young contacts of active tuberculosis cases. East Mediterr Health J 2011; 17:714-718. [PMID: 22259925] [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: 05/31/2023]
Abstract
In a cross-sectional study in a hospital in Tehran in 2006-08 the QuantiFERON-TB interferon-gamma release assay (QTB) was compared with the tuberculin skin test (TST) in 59 young people (aged < 20 years) with close contact with immunocompetent cases of proven pulmonary tuberculosis. After 1 year follow-up 10 subjects had progressed to tuberculosis disease and received treatment; TSTwas positive in 30% and QTB in 100%. Of the 49 non-progressive subjects, TST was positive in 10.4% and QTB in 16.3%. The agreement between TST and QTB assay in non-progressive subjects was poor (K = 0.43). False positive and false negative rates for TST were 40.0% and 9.3% respectively; positive and predictive values were 60.0% and 90.7%. We suggest adding the interferon assay to the skin test in the decision to perform chest X-ray or to start chemoprophylaxis at least in younger subjects (aged < 20 years).
Collapse
Affiliation(s)
- S Noorbakhsh
- Research Centre of Paediatric Infectious Diseases, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.
| | | | | | | | | | | | | |
Collapse
|
42
|
Shokri A, Sharifi I, Khamesipour A, Nakhaee N, Fasihi Harandi M, Nosratabadi J, Hakimi Parizi M, Barati M. The effect of verapamil on in vitro susceptibility of promastigote and amastigote stages of Leishmania tropica to meglumine antimoniate. Parasitol Res 2011; 110:1113-7. [DOI: 10.1007/s00436-011-2599-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2011] [Accepted: 08/03/2011] [Indexed: 10/17/2022]
|
43
|
Barati F, Papahn AA, Afrough M, Barati M. Effects of Tyrode's solution osmolarities and milk on bull sperm storage above zero temperatures. Iran J Reprod Med 2011; 9:25-30. [PMID: 25356078 PMCID: PMC4212142] [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: 03/16/2010] [Accepted: 06/27/2010] [Indexed: 12/03/2022]
Abstract
BACKGROUND Control of the medium osmolarity and temperature during long or short time sperm manipulation is essential. OBJECTIVE The objectives of the present study were to find the effects of different osmolarities of modified Tyrode's solution and milk on the bull sperm during incubation at above zero temperatures. MATERIALS AND METHODS Semen samples were collected twice from five Najdi bull. Centrifuged and most parts of seminal plasma were removed. First experiment: The concentrated semen were splited into nine aliquots to incubate in three different osmolarities (200, 300 and 400 mOsm) at three temperatures (5, 25 and 39°C) for 15 and 60 min of incubation. Second experiment: The semen samples were splited, mixed with the same volume of whole cow milk (5 and 25°C) and milk with 7% glycerol (5°C) and incubated for 15 and 60 min. RESULTS Sperm motility severely affected (p<0.05) by incubation at low ionic tension (200 mOsm/l) especially at low temperature (5°C). The impact of low osmolarity on sperm viability can reduce by increasing the incubation temperature to 39°C. The decreased sperm motility, which was induced by lowering osmolarity, was not improved (p>0.05) by increasing temperature during 1 h of incubation. Milk can protect the sperm viability and motility at cool conditions and there is no beneficial effect of glycerol in combination of milk on sperm incubation at above zero temperatures (p<0.05). CONCLUSION Iso- and hyper-osmotic solutions protect bull sperm motility and viability at 25 and 39°C, while milk can be used for protecting sperm at 5°C.
Collapse
Affiliation(s)
- Farid Barati
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Ahmad Ali Papahn
- Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Mahsa Afrough
- Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Mohammad Barati
- Department of Applied Chemistry, University of Tabriz, Tabriz, Iran
| |
Collapse
|
44
|
Moramezi F, Barati M, Saadati N, Masihi S, Hemadi M. A Comparative Study between the Efficacy of 17-alpha-Hydroxy Progesterone Caproate Plus Salbutamol with Magnesium Sulfate in Treatment of Preterm Labor. INT J PHARMACOL 2010. [DOI: 10.3923/ijp.2011.130.134] [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: 11/15/2022]
|
45
|
Noorbakhsh S, Barati M, Mousavi J, Tabatabaei A. Prevalence of nosocomial sinusitis in ICUs admitted patients in Rasool Hospital, Tehran, Iran. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.2045] [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: 12/01/2022] Open
|
46
|
Barati M, Noorbakhsh S, Talebi-Taher M, Abasi R. Clinical, Microbiological, and Epidemiologic Characteristics of Acinetobacter Infections in a University Hospital, Tehran, Iran. Int J Infect Dis 2008. [DOI: 10.1016/j.ijid.2008.05.930] [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: 10/21/2022] Open
|
47
|
Davatolhagh S, Separdar L, Barati M. Effect of thermal bond excitations on the critical properties of covalent Ising networks. Phys Rev E Stat Nonlin Soft Matter Phys 2008; 78:021138. [PMID: 18850817 DOI: 10.1103/physreve.78.021138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Revised: 06/12/2008] [Indexed: 05/26/2023]
Abstract
We introduce a bond-diluted Ising model with temperature-dependent concentration of bonds, which is intended to simulate the excitations of bond degrees of freedom as in covalently bonded network liquids arising from the thermal electronic transitions between bonding and antibonding electronic states. The critical behavior of this simplified model system, called the thermalized-bond Ising model, is investigated in terms of the Monte Carlo simulation results of finite-size regular Ising systems, as input for the method of chemical potentials that is generally used to obtain the thermodynamic properties of annealed impurity models. A finite-size scaling analysis of the susceptibility and the fourth-order cumulant results in a reliable estimation of the renormalized critical exponents. The exponents are found to be consistent with the phenomenological renormalization relations, due to Fisher, despite the temperature-dependent bond dilution.
Collapse
Affiliation(s)
- S Davatolhagh
- Department of Physics, College of Sciences, Shiraz University, Shiraz 71454, Iran
| | | | | |
Collapse
|
48
|
Kulkarni PS, Hamid H, Barati M, Butulija D. Angiotensin II-induced constrictions are masked by bovine retinal vessels. Invest Ophthalmol Vis Sci 1999; 40:721-8. [PMID: 10067976] [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: 02/11/2023] Open
Abstract
PURPOSE To unmask the vasoconstricting effect of angiotensin II (Ang II) on retinal smooth muscle by studying its interaction with endothelium-derived paracrine substances. This study focused specifically on determining the changes in vascular diameter and the release of endothelial-derived vasodilators, nitric oxide (NO) and prostaglandin (PG) I2, from isolated retinal microvessels. METHODS Bovine retinal central artery and vein were cannulated, and arterioles and venules were perfused with oxygenated/heparinized physiological salt solution at 37 degrees C. This ex vivo perfused retinal microcirculation model was used to observe the contractile effects of Ang II on arterioles and venules of different diameters. The NO and PGI2 synthase inhibitors, 1-NOARG and flurbiprofen, respectively, were used to unmask Ang II vasoconstriction; the changes in vascular diameters were then measured. Enzyme immunoassays were used to measure the release of cGMP (an index of NO release) and 6-keto-PG-F1alpha (a stable metabolite of PGI2) from isolated bovine retinal vessels. RESULTS Topically applied Ang II (10(-10) M to 10(-4) M) caused significant (P < 0.05) arteriolar and venular constrictions in a dose-dependent manner, with the smallest retinal arterioles (7+/-0.2 microm luminal diameter) and venules (12+/-2 microm luminal diameter) significantly more sensitive than larger vessels. After the inhibition of endogenous NO and PGI2 synthesis by 1-NOARG and flurbiprofen, respectively, the vasoconstriction effects of Ang II became more pronounced. Again, the smallest vessels tested were significantly more sensitive, and synthesis of endothelial-derived relaxing factor (EDRF), therefore, may be most important in these vessels. Vasoactive doses of Ang II (10(-10) M to 10(-4) M) caused a dose-dependent increase in the release of NO and PGI2 from isolated bovine retinal vessels, indicating that the increase in EDRF may nullify direct Ang II-induced vasoconstriction. Interestingly, intraluminal administration of Ang II caused only vasodilation. CONCLUSIONS This study demonstrates that the retinal vascular endothelium acts as a buffer against the vasoconstricting agent Ang II via release of vasodilators NO and PGI2, and the vasoconstriction effects due to Ang II are most prominent in the smallest diameter vessels.
Collapse
Affiliation(s)
- P S Kulkarni
- Department of Ophthalmology and Visual Sciences, School of Medicine, University of Louisville, Kentucky 40202, USA
| | | | | | | |
Collapse
|
49
|
Barati M, Datars WR, Ummat PK, Palidwar J. Hall effect and resistivity of stage-2 SbCl5 intercalated graphite. Phys Rev B Condens Matter 1994; 49:11475-11478. [PMID: 10010008 DOI: 10.1103/physrevb.49.11475] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
50
|
Barati M, Datars WR, Chien TR, Stager CV, Garrett JD. Resistivity, Hall effect, and magnetic susceptibility of UPd2Si2. Phys Rev B Condens Matter 1993; 48:16926-16928. [PMID: 10008290 DOI: 10.1103/physrevb.48.16926] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|