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Zakeri S, Rahimi Z, Rezvani N, Vaisi-Raygani A, Alibakhshi R, Zakeri S, Yari K. The influence of Nrf2 gene promoter methylation on gene expression and oxidative stress parameters in preeclampsia. BMC Med Genomics 2024; 17:64. [PMID: 38419047 PMCID: PMC10903067 DOI: 10.1186/s12920-023-01791-6] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 12/26/2023] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND AND AIMS Preeclampsia (PE) is a serious medical condition that usually causes high blood pressure and affects multiple organs. Considering the adverse effect of oxidative stress on the process of PE in pregnant women and regarding the role of the Nrf2 gene in placental oxidative pathways, this study was conducted to investigate the DNA methylation status of Nrf2 in PE and healthy pregnant women. MATERIALS AND METHODS The present case-control study consisted of 70 PE and 70 healthy pregnant women. Blood and placenta samples were taken from all subjects, and the percentage of the Nrf2 gene methylation in the samples was assessed by the Methyl Light PCR method. Also, the Nrf2 gene expression was evaluated by real-time PCR. The total antioxidant capacity (TAC) and total oxidative status (TOS) were measured by the colorimetric method. RESULTS In PE women, there was a significant increase in blood pressure, term of pregnancy, and BMI. In addition, there were enhanced Nrf2 DNA methylation percentage in placenta tissue and increased TOS levels in placenta tissue and blood compared to healthy pregnant women (P < 0.05). Also, in the PE group, there was a significant decrease in Nrf2 gene expression and TAC level in placenta tissue compared to the control group (P < 0.05). CONCLUSION The Nrf2 gene undergoes epigenetic modifications of DNA hypermethylation in the PE placenta. Decreased expression of this gene and the changes in the level of oxidative parameters (TAC, TOS) confirm it.
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Affiliation(s)
- Saba Zakeri
- Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Daneshgah Avenue, Kermanshah, P.O.Box: 67148-69914, Iran
| | - Zohreh Rahimi
- Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Daneshgah Avenue, Kermanshah, P.O.Box: 67148-69914, Iran.
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Nayebali Rezvani
- Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Daneshgah Avenue, Kermanshah, P.O.Box: 67148-69914, Iran
| | - Asad Vaisi-Raygani
- Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Daneshgah Avenue, Kermanshah, P.O.Box: 67148-69914, Iran
| | - Reza Alibakhshi
- Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Daneshgah Avenue, Kermanshah, P.O.Box: 67148-69914, Iran
| | - Sahel Zakeri
- Department of Biology, Faculty of Basic Sciences, Islamic Azad University, Sanandaj, Iran
| | - Kheirolah Yari
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
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2
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Zakeri S, Rahimi Z, Jalilian1 N, Vaisi-Raygani A, Rezvani A, Dastafkan Z. Aberrant Methylation of the SOD1 GENE, its Expression and Enzyme Activity in the Placenta of Patients with Preeclampsia. Rep Biochem Mol Biol 2023; 12:112-119. [PMID: 37724155 PMCID: PMC10505468 DOI: 10.52547/rbmb.12.1.112] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 01/02/2023] [Indexed: 09/20/2023]
Abstract
Background Oxidative stress is involved in the pathogenesis of preeclampsia (PE). Dysregulation of SOD1 may be involved in the pathogenesis of PE. We examined and compared the methylation level of the promoter region (PMR) of the SOD1, gene expression, and enzyme activity of superoxide dismutase (SOD) in both placenta and maternal blood in PE women. Methods A total of 140 blood samples and 40 placental tissue samples from PE and healthy pregnant controls were studied. The PMR of the SOD1 (Methylight PCR method), the expression (Real-time PCR), and its enzyme activity were investigated and compared in two groups. Results The PMR of the SOD1 gene in the placental tissue of the patients was significantly increased compared to the control group (P= 0.008); this result was accompanied by a decrease in the expression of the gene and a decrease in the activity of the SOD enzyme. Meanwhile, the PMR of the SOD1 gene did not significantly change in the blood samples of the patients (P= 0.95), while a significant decrease in the expression of SOD1 (without a significant change in the SOD activity) was observed. Conclusion The results showed significant changes in the PMR of the SOD1 gene and gene expression in placenta tissue. The results highlight the role of the placenta in complications during pregnancy and also revealed epigenetics as an important regulatory pathway in the pathogenesis of preeclampsia.
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Affiliation(s)
- Saba Zakeri
- Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Zohreh Rahimi
- Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran.
- Medical Biology Research Center, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran. And Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Nazanin Jalilian1
- Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Asad Vaisi-Raygani
- Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Ali Rezvani
- Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Zahra Dastafkan
- Medical Genetics Laboratory, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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3
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Babajani F, Kakavand A, Mohammadi H, Sharifi A, Zakeri S, Asadi S, Afshar ZM, Rahimi Z, Sayad B. COVID-19 and renin angiotensin aldosterone system: Pathogenesis and therapy. Health Sci Rep 2021; 4:e440. [PMID: 34869917 PMCID: PMC8596942 DOI: 10.1002/hsr2.440] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 09/14/2021] [Accepted: 10/06/2021] [Indexed: 12/23/2022] Open
Abstract
AIMS The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) binds to the ACE2 component of the renin-angiotensin aldosterone system (RAAS) and infects the human cells. The aims of the present review were to look at the role and alteration of the RAAS components in SARS-CoV-2 infection, therapeutic approaches, and clinical trials in this field. METHODS We surveyed the literature (PubMed, Web of Science, and Scopus) till August 18, 2021, and 59 published papers regarding the components of the RAAS and their role and alterations in SARS-CoV-2 infection along with various COVID-19 therapies based on the RASS components were included in the study. RESULTS ACE inhibitors, angiotensin receptor blockers, and mineralocorticoid receptor inhibitors are agents that significantly enhance the ACE2 and Ang-(1-7) levels, which can be suggestive for their role as therapeutics against SARS-CoV-2 infection. Beta-adrenergic blockers, which negatively regulate renin release from juxtaglomerular cells, and vitamin D, as a regulator of the RAAS and renin expression, are proposed therapeutics in the treatment of COVID-19. Some antihyperglycemic agents could be potentially protective against COVID-19-induced lung injury. Also, the inhibition of the Janus kinase/signal transducer and activator of the transcription pathway as a potential treatment for COVID-19 has been suggested. Finally, resveratrol, an antioxidant that can suppress Ang II, has been suggested as an adjunct to other therapies. CONCLUSION Regarding the suggested potential therapies for COVID-19, there are many clinical trials whose results might change the treatment strategies of SARS-CoV-2 infection. So, the results of well-organized clinical trials on the efficacy and safety of the mentioned agents in the treatment of COVID-19 will be useful in the management and therapy of the disease.
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Affiliation(s)
- Fatemeh Babajani
- Students Research CommitteeKermanshah University of Medical SciencesKermanshahIran
| | - Atefeh Kakavand
- Students Research CommitteeKermanshah University of Medical SciencesKermanshahIran
| | - Hossien Mohammadi
- Students Research CommitteeKermanshah University of Medical SciencesKermanshahIran
| | - Armin Sharifi
- Students Research CommitteeKermanshah University of Medical SciencesKermanshahIran
| | - Saba Zakeri
- Students Research CommitteeKermanshah University of Medical SciencesKermanshahIran
| | - Soheila Asadi
- Department of Clinical BiochemistryKermanshah University of Medical SciencesKermanshahIran
| | - Zeinab Mohseni Afshar
- Infectious Diseases Research CenterKermanshah University of Medical SciencesKermanshahIran
| | - Zohreh Rahimi
- Department of Clinical BiochemistryKermanshah University of Medical SciencesKermanshahIran
- Behavioral Research CenterKermanshah University of Medical SciencesKermanshahIran
| | - Babak Sayad
- Infectious Diseases Research CenterKermanshah University of Medical SciencesKermanshahIran
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4
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Zakeri S, Naseri R, Rahimi Z. Comment on "Association between Interleukin-32 and Interleukin-17A Single Nucleotide Polymorphisms and Serum Levels with Polycystic Ovary Syndrome". Iran J Allergy Asthma Immunol 2020; 19:318-319. [PMID: 32615667 DOI: 10.18502/ijaai.v19i3.3461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 12/07/2019] [Indexed: 11/24/2022]
Abstract
No Abstract.
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Affiliation(s)
- Saba Zakeri
- Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Rozita Naseri
- Department of Internal Medicine, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Zohreh Rahimi
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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Mehrizi AA, Ameri Torzani M, Zakeri S, Jafary Zadeh A, Babaeekhou L. Th1 immune response to Plasmodium falciparum recombinant thrombospondin-related adhesive protein (TRAP) antigen is enhanced by TLR3-specific adjuvant, poly(I:C) in BALB/c mice. Parasite Immunol 2019; 40:e12538. [PMID: 29799636 DOI: 10.1111/pim.12538] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 05/21/2018] [Indexed: 12/12/2022]
Abstract
Sporozoite-based malaria vaccines have provided a gold standard for malaria vaccine development, and thrombospondin-related adhesive protein (TRAP) serves as the main vaccine candidate antigen on sporozoites. As recombinant malaria vaccine candidate antigens are poorly immunogenic, additional appropriate immunostimulants, such as an efficient adjuvant, are highly essential to modulate Th1-cell predominance and also to induce a protective and long-lived immune response. In this study, polyinosinic:polycytidylic acid [poly(I:C)], the ligand of TLR3, was considered as the potential adjuvant for vaccines targeting stronger Th1-based immune responses. For this purpose, BALB/c mice were immunized with rPfTRAP delivered in putative poly(I:C) adjuvant, and humoural and cellular immune responses were determined in different immunized mouse groups. Delivery of rPfTRAP with poly(I:C) induced high levels and titres of persisted and also high-avidity anti-rPfTRAP IgG antibodies comparable to complete Freund's adjuvant (CFA)/incomplete Freund's adjuvant (IFA) adjuvant after the second boost. In addition, rPfTRAP formulated with poly(I:C) elicited a higher ratio of IFN-γ/IL-5, IgG2a/IgG1, and IgG2b/IgG1 than with CFA/IFA, indicating that poly(I:C) supports the induction of a stronger Th1-based immune response. This is a first time study which reveals the potential of rPfTRAP delivery in poly(I:C) to increase the level, avidity and durability of both anti-PfTRAP cytophilic antibodies and Th1 cytokines.
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Affiliation(s)
- A A Mehrizi
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - M Ameri Torzani
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran.,Department of Biology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
| | - S Zakeri
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - A Jafary Zadeh
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - L Babaeekhou
- Department of Biology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
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Drevelegkas K, Bangeas P, Paramythiotis D, Andrews T, Zakeri S. Metastatic spread of cutaneous melanoma to the sigmoid colon: a rare but important consideration. Hippokratia 2017; 21:194-196. [PMID: 30944511 PMCID: PMC6441346] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
BACKGROUND Cutaneous melanoma is known for its aggressive tendency for metastasis, most commonly to lymph nodes, lung, liver, and brain. CASE REPORT We present the case of an 80-year-old male, with a history of cutaneous melanoma, found to have biopsy-proven metastatic melanoma deposits in the sigmoid colon. This rare case was initially thought to be a walled-off perforation secondary to diverticulitis. Although, computed tomography, showed features more strongly suggestive of malignancy. We propose early consideration of bowel metastasis in patients with a history of cutaneous melanoma presenting with lower gastrointestinal symptoms. CONCLUSION Once malignancy is included in the differential for any inflammatory type bowel lesion, arranging endoscopy and biopsy is essential to confirm the diagnosis and guide management. Multidisciplinary team discussion is recommended to determine the most appropriate treatment strategy - radical versus palliative, which must always consider the patient's performance status alongside cancer staging. HIPPOKRATIA 2017, 21(4): 194-196.
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Affiliation(s)
- K Drevelegkas
- Radiology Department Royal Liverpool University Hospital, UK
| | - P Bangeas
- 1 Propedeutic Surgical Department, A.H.E.P.A. University Hospital, Aristotle University of Thessaloniki, Greece
| | - D Paramythiotis
- 1 Propedeutic Surgical Department, A.H.E.P.A. University Hospital, Aristotle University of Thessaloniki, Greece
| | - T Andrews
- Histopathology Department, Royal Liverpool University Hospital, UK
| | - S Zakeri
- Radiology Department Royal Liverpool University Hospital, UK
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7
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Solgi R, Djadid ND, Eslamifar A, Raz A, Zakeri S. Morphological and Molecular Characteristic of Megaselia scalaris (Diptera: Phoridae) Larvae as the Cause of Urinary Myiasis. J Med Entomol 2017; 54:781-784. [PMID: 28399213 DOI: 10.1093/jme/tjw204] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 10/28/2016] [Indexed: 06/07/2023]
Abstract
We report a case of urinary myiasis occurring in a 60-yr-old Iranian male patient with urinary tract problems and a history of travel to Thailand who was referred to Shafagh Medical Laboratory in Tehran (Iran). Larvae excreted in the patient's urine were confirmed by morphological identification key and DNA barcoding to belong to the species Megaselia scalaris Loew, which is known as the scuttle fly. Based on the patient's history, he was infected with M. scalaris in Thailand. To the best of our knowledge, this is the first report of urinary myiasis caused by M. scalaris in Thailand.
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Affiliation(s)
- R Solgi
- Pasteur Institute of Iran, Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Tehran, Iran ( ; ; ; )
- Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - N Dinparast Djadid
- Pasteur Institute of Iran, Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Tehran, Iran (; ; ; )
| | - A Eslamifar
- Department of Clinical Research, Pasteur Institute of Iran, Tehran, Iran
| | - A Raz
- Pasteur Institute of Iran, Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Tehran, Iran (; ; ; )
| | - S Zakeri
- Pasteur Institute of Iran, Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Tehran, Iran (; ; ; )
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8
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Someabozorg MA, Mirkazemi S, Mehrizi AA, Shokri F, Djadid ND, Zakeri S. Administration of naloxone in combination with recombinant Plasmodium vivax AMA-1 in BALB/c mice induces mixed Th1/Th2 immune responses. Parasite Immunol 2015; 37:521-532. [PMID: 26234932 DOI: 10.1111/pim.12220] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 04/12/2015] [Accepted: 07/28/2015] [Indexed: 11/30/2022]
Abstract
Naloxone (NLX) has the ability to shift the immune response to a Th1 profile. Therefore, the adjuvant efficacy of NLX with recombinant P. vivax apical membrane antigen-1(rPvAMA-1) in BALB/c mice was evaluated. Mice were immunized subcutaneously with purified rPvAMA-1 formulated with NLX (doses of 5 mg/kg body weight) alone or in combination with IFA. A significant increase in anti-PvAMA-1 IgG antibody after the second boost (mean OD490 = 2·08 and 2·17, in groups received, rPvAMA-1/NLX and rPvAMA-1/NLX/IFA, respectively) was detected. IgG1 and IgG2b were the predominant isotypes in all immunized mouse groups. In immunized mice with rPvAMA-1/NLX (mean: 1036 pg/mL) and with rPvAMA-1/NLX/IFA (mean: 1024 pg/mL), IFN-γ was elicited in response to rPvAMA-1 after the second boost. No detectable IL-4 secretion was determined in all tested groups. In conclusion, the administration of NLX alone or NLX/IFA with rPvAMA-1 in BALB/c mice, which induced mixed Th1/Th2 immune responses, was comparable with that of the same recombinant antigen with CFA/IFA adjuvant. The results indicate that NLX alone may possibly not be considered as a potent Th1 adjuvant in PvAMA-1-based vaccine. However, in order to modulate immune responses from mixed Th1/Th2 to strong and protective Th1 response, further study is warranted on combination of NLX with other adjuvants such as CpG motifs or MPL in proper vaccine formulation. Additionally, dose-response study is necessary to determine the effect of different doses of antigen combined with NLX (at various doses) in Balb/c mice.
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Affiliation(s)
- M A Someabozorg
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran.,Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - S Mirkazemi
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - A A Mehrizi
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - F Shokri
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - N D Djadid
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - S Zakeri
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
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9
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Hotouras A, Ribas Y, Zakeri S, Bhan C, Wexner SD, Chan CL, Murphy J. A systematic review of the literature on the surgical management of recurrent rectal prolapse. Colorectal Dis 2015; 17:657-64. [PMID: 25772797 DOI: 10.1111/codi.12946] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 01/21/2015] [Indexed: 12/14/2022]
Abstract
AIM There are no available guidelines to support surgical decision-making in recurrent rectal prolapse. This systematic review evaluated the results of abdominal or perineal surgery for recurrent rectal prolapse, with the aim of developing an evidence-based treatment algorithm. METHOD PubMed and MEDLINE databases were searched for all clinical studies involving patients who underwent surgery for recurrent rectal prolapse between 1950 and 2014. The primary outcome measure was the recurrence rate after abdominal or perineal surgery for recurrent rectal prolapse. Secondary outcomes included morbidity, mortality and quality of life data where available. RESULTS There were no randomized controlled studies comparing the success rates of abdominal or perineal surgery for recurrent rectal prolapse. Most studies were heterogeneous, of low quality (level IV) and involved small numbers of patients. The follow-up of 144 patients included in the studies undergoing perineal surgery ranged from 8.8 to 81 months, with recurrence rates varying from 0% to 50%. Morbidity ranged from 0% to 17% with no mortality reported. Limited data on quality of life following the Altemeier procedure were available. The follow-up for 158 patients included in the studies who underwent abdominal surgery ranged from 0 to 23 years, during which recurrence rates varied from 0% to 15%. Morbidity rates ranged from 0% to 32% with 4% mortality. No quality of life data were available for patients undergoing abdominal surgery. CONCLUSION This systematic review was unable to develop a treatment algorithm for recurrent rectal prolapse due to the variety of surgical techniques described and the low level of evidence within heterogeneous studies. Larger high-quality studies are necessary to guide practice in this difficult area.
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Affiliation(s)
- A Hotouras
- Academic Surgical Unit, Royal London Hospital, London, UK.,Department of Surgery, Whittington Hospital NHS Trust, London, UK
| | - Y Ribas
- Department of Surgery, Consorci Sanitari de Terrassa, Terrassa, Barcelona, Spain
| | - S Zakeri
- Department of Surgery, Whittington Hospital NHS Trust, London, UK
| | - C Bhan
- Department of Surgery, Whittington Hospital NHS Trust, London, UK
| | - S D Wexner
- Digestive Disease Center, Cleveland Clinic Florida, Weston, FL, USA
| | - C L Chan
- Academic Surgical Unit, Royal London Hospital, London, UK
| | - J Murphy
- Physiology Unit, St Mark's Hospital, London, UK
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10
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Hotouras A, Ribas Y, Zakeri S, Murphy J, Bhan C, Chan CL. Gracilis muscle interposition for rectovaginal and anovaginal fistula repair: a systematic literature review. Colorectal Dis 2015; 17:104-10. [PMID: 25284745 DOI: 10.1111/codi.12791] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Accepted: 07/25/2014] [Indexed: 12/13/2022]
Abstract
BACKGROUND Repair of rectovaginal fistula (RVF) is associated with high recurrence. For this reason gracilis muscle interposition is increasingly being used. AIM To evaluate the efficacy of this procedure for RVF repair. METHOD/SEARCH STRATEGY A search of PubMed and Medline databases was performed in November 2013 using the text terms and MESH headings 'rectovaginal fistula/fistulation', and 'gracilis muscle', spanning 1980-2013. The search strategy was restricted to articles written in English with available abstracts. Sample size, aetiology of RVF, previous repair attempts, follow-up period, healing rates and complications were recorded and analysed. RESULTS Seventeen studies involving 106 patients were analysed. The cause of RVF included inflammatory bowel disease (n = 37 [34.9%]: Crohn's disease [34], ulcerative colitis [3]), pelvic surgery (37 [34.9%]), obstetric injury (9 [8.5%]), malignancy (7 [6.6%]), trauma (5 [4.7%]), miscellaneous (idiopathic, endometriosis, radiation: 11 [10.4%]). Patients had undergone a median number of two previous unsuccessful repairs. At a median follow-up of 21 months, healing had occurred in 33-100% (median 100%) with the largest studies reporting rates between 60% and 90%. Thirteen studies did not report any complications, with the remainder reporting only minor morbidity. CONCLUSION Gracilis interposition appears to have a reasonable success rate for RVF repair with acceptable morbidity. It may be considered as one of the first-line treatment options for recurrent RVF.
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Affiliation(s)
- A Hotouras
- Academic Surgical Unit, Barts Health NHS Trust, Queen Mary University of London, London, UK
| | - Y Ribas
- Department of Surgery, Consorci Sanitari de Terrassa, Terrassa, Barcelona, Spain
| | - S Zakeri
- Department of Colorectal Surgery, Whittington Health NHS Trust, London, UK
| | - J Murphy
- Academic Surgical Unit, Barts Health NHS Trust, Queen Mary University of London, London, UK
| | - C Bhan
- Department of Colorectal Surgery, Whittington Health NHS Trust, London, UK
| | - C L Chan
- Academic Surgical Unit, Barts Health NHS Trust, Queen Mary University of London, London, UK
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11
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Afzal E, Zakeri S, Keyhanvar P, Bagheri M, Mahjoubi P, Asadian M, Omoomi N, Dehqanian M, Ghalandarlaki N, Darvishmohammadi T, Farjadian F, Golvajoee MS, Afzal S, Ghaffari M, Cohan RA, Gravand A, Ardestani MS. Nanolipodendrosome-loaded glatiramer acetate and myogenic differentiation 1 as augmentation therapeutic strategy approaches in muscular dystrophy. Int J Nanomedicine 2013; 8:2943-60. [PMID: 23966782 PMCID: PMC3743640 DOI: 10.2147/ijn.s43219] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND [Corrected] Muscular dystrophies consist of a number of juvenile and adult forms of complex disorders which generally cause weakness or efficiency defects affecting skeletal muscles or, in some kinds, other types of tissues in all parts of the body are vastly affected. In previous studies, it was observed that along with muscular dystrophy, immune inflammation was caused by inflammatory cells invasion - like T lymphocyte markers (CD8+/CD4+). Inflammatory processes play a major part in muscular fibrosis in muscular dystrophy patients. Additionally, a significant decrease in amounts of two myogenic recovery factors (myogenic differentation 1 [MyoD] and myogenin) in animal models was observed. The drug glatiramer acetate causes anti-inflammatory cytokines to increase and T helper (Th) cells to induce, in an as yet unknown mechanism. MyoD recovery activity in muscular cells justifies using it alongside this drug. METHODS In this study, a nanolipodendrosome carrier as a drug delivery system was designed. The purpose of the system was to maximize the delivery and efficiency of the two drug factors, MyoD and myogenin, and introduce them as novel therapeutic agents in muscular dystrophy phenotypic mice. The generation of new muscular cells was analyzed in SW1 mice. Then, immune system changes and probable side effects after injecting the nanodrug formulations were investigated. RESULTS The loaded lipodendrimer nanocarrier with the candidate drug, in comparison with the nandrolone control drug, caused a significant increase in muscular mass, a reduction in CD4+/CD8+ inflammation markers, and no significant toxicity was observed. The results support the hypothesis that the nanolipodendrimer containing the two candidate drugs will probably be an efficient means to ameliorate muscular degeneration, and warrants further investigation.
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Affiliation(s)
- Ehsan Afzal
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Saba Zakeri
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Peyman Keyhanvar
- School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Meisam Bagheri
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, India
- Autoimmune Disease Research Center, Shiraz University of Medical Sciences, Shiraz
| | | | | | - Nogol Omoomi
- National Cell Bank, Pasteur Institute of Iran, Tehran
| | - Mohammad Dehqanian
- Department of Nanotechnology, Faculty of Advanced Sciences and Technologies, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran
| | - Negar Ghalandarlaki
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | - Fatemeh Farjadian
- Department of Chemistry, College of Science, Shiraz University, Shiraz
| | | | - Shadi Afzal
- Department of English, Beyza Branch, Islamic Azad University, Beyza
| | - Maryam Ghaffari
- Department of Basic Science at Apadana Education Institute, Shiraz
| | | | - Amin Gravand
- Faculty of Pharmacy, Ahwaz Jondishapour University of Medical Sciences, Ahwaz
| | - Mehdi Shafiee Ardestani
- Department of Medicinal Chemistry and Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences
- Department of Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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Mehrizi AA, Zakeri S, Rafati S, Salmanian AH, Djadid ND. Immune responses elicited by co-immunization of Plasmodium vivax and P. falciparum MSP-1 using prime-boost immunization strategies. Parasite Immunol 2012; 33:594-608. [PMID: 21883290 DOI: 10.1111/j.1365-3024.2011.01331.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Carboxy-terminus of merozoite surface protein-1 (MSP-1(19) ) is the major protein on the surface of the plasmodial merozoite that acts as one of the most important blood-stage vaccine candidates. The present investigation was designed to evaluate the immune responses when either two recombinant antigens (rPvMSP-1(19) + rPfMSP-1(19)) or two plasmid constructs (pcDNA3.1 hygro-PvMSP-1(19) + pcDNA3.1 hygro-PfMSP-1(19)) were administered in combination at a single site in mice by using different immunization strategies (protein/protein, DNA/DNA and DNA/protein) at weeks 0, 5 and 8. All mice were monitored for the level of MSP-1(19) -specific antibody for up to 40 weeks. The inclusion of both recombinant antigens in a vaccine mixture could not inhibit induction of antibodies to the other antigen when the two recombinant antigens were combined in immunization formulation. Interestingly, antisera from immunized mice with either recombinant antigen failed to cross-react with heterologous antigen. Moreover, the results of this study showed that co-immunization with both antigens at a single site generated a substantial PvMSP-1(19) - and PfMSP-1(19) -specific antibody responses and also IFN-γ cytokine production (Th1 response) in DNA/protein prime-boost immunization strategies. The increased humoral response to PvMSP-1(19) and PfMSP-1(19) lasted nearly a year after immunization. Therefore, the results of this study are encouraging for the development of multi-species malaria vaccine based on MSP-1(19) antigen.
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Affiliation(s)
- A A Mehrizi
- Malaria and Vector Research Group, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
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Turki H, Zoghi S, Mehrizi AA, Zakeri S, Raeisi A, Khazan H, Haghdoost AA. Absence of asymptomatic malaria infection in endemic area of bashagard district, hormozgan province, iran. Iran J Parasitol 2012; 7:36-44. [PMID: 23133470 PMCID: PMC3488819] [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: 09/19/2011] [Accepted: 12/21/2011] [Indexed: 11/21/2022]
Abstract
BACKGROUND A successful malaria elimination program calls for enough attention to parasite carriers, especially asymptomatic malaria, as well as the diagnosis and treatment of clinical cases. Asymptomatic malaria is an infection that patients do not show any symptom; thus, these patients play critical role in the concept of an elimination program. The current investigation was conducted to evaluate the presence of these cases in Bashagard District, formerly a high malaria transmission area in Hormozgan Province, Iran. METHODS Blood samples (n = 500) were collected from symptomless individuals residing in Bashagard to evaluate Plasmodium infection by using microscopic, serological and nested-PCR techniques. RESULTS Regarding the microscopic and nested-PCR analysis, no asymptomatic infection was detected among studied individuals. Totally, 1% of the studied population (5 of 500) had anti PvMSP-1(19)-specific IgG antibody; however, only 0.2% (1 of 500) of the individuals was seropositive to recombinant PfMSP-1(19), using ELISA. CONCLUSION This study showed no asymptomatic malaria infection in the studied population; hence malaria elimination is feasible and can be successfully carried out in this region.
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Affiliation(s)
- H Turki
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran,Department of Parasitology and Mycology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - S Zoghi
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - A A Mehrizi
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - S Zakeri
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - A Raeisi
- National Programme Manager for Malaria Control, Ministry of Health and Medical Education, Tehran, Iran,Departement of Medical Entomology & Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran,Corresponding author:Fax: +98 21 66700143, E-mail:
| | - H Khazan
- Department of Parasitology and Mycology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - AA Haghdoost
- School of Public Health, Kerman University of Medical Science, Kerman, Iran
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Ghiasi SM, Salmanian AH, Chinikar S, Zakeri S. Mice orally immunized with a transgenic plant expressing the glycoprotein of Crimean-Congo hemorrhagic fever virus. Clin Vaccine Immunol 2011; 18:2031-7. [PMID: 22012978 PMCID: PMC3232705 DOI: 10.1128/cvi.05352-11] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Accepted: 09/15/2011] [Indexed: 01/03/2023]
Abstract
While Crimean-Congo hemorrhagic fever (CCHF) has a high mortality rate in humans, the associated virus (CCHFV) does not induce clinical symptoms in animals, but animals play an important role in disease transmission to humans. Our aim in this study was to examine the immunogenicity of the CCHFV glycoprotein when expressed in the root and leaf of transgenic plants via hairy roots and stable transformation of tobacco plants, respectively. After confirmatory analyses of transgenic plant lines and quantification of the expressed glycoprotein, mice were either fed with the transgenic leaves or roots, fed the transgenic plant material and injected subcutaneously with the plant-made CCHFV glycoprotein (fed/boosted), vaccinated with an attenuated CCHF vaccine (positive control), or received no treatment (negative control). All immunized groups had a consistent rise in anti-glycoprotein IgG and IgA antibodies in their serum and feces, respectively. The mice in the fed/boosted group showed a significant rise in specific IgG antibodies after a single boost. Our results imply that oral immunization of animals with edible materials from transgenic plants is feasible, and further assessments are under way. In addition, while the study of CCHF is challenging, our protocol should be further used to study CCHFV infection in the knockout mouse model and virus neutralization assays in biosafety level 4 laboratories.
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MESH Headings
- Administration, Oral
- Animals
- Antibodies, Viral/analysis
- Antibodies, Viral/blood
- Feces/chemistry
- Glycoproteins/genetics
- Glycoproteins/immunology
- Hemorrhagic Fever Virus, Crimean-Congo/genetics
- Hemorrhagic Fever Virus, Crimean-Congo/immunology
- Immunoglobulin A/analysis
- Immunoglobulin G/blood
- Mice
- Plants, Genetically Modified/genetics
- Plants, Genetically Modified/immunology
- Serum/chemistry
- Serum/immunology
- Nicotiana
- Vaccines, Edible
- Vaccines, Synthetic/administration & dosage
- Vaccines, Synthetic/genetics
- Vaccines, Synthetic/immunology
- Viral Proteins/genetics
- Viral Proteins/immunology
- Viral Vaccines/administration & dosage
- Viral Vaccines/genetics
- Viral Vaccines/immunology
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Affiliation(s)
- S. M. Ghiasi
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - A. H. Salmanian
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - S. Chinikar
- Arboviruses and Viral Hemorrhagic Fevers Laboratory (National Reference Laboratory), Pasteur Institute of Iran, Tehran, Iran
| | - S. Zakeri
- Malaria Research Group, Biotechnology and Vector Research Center, Pasteur Institute of Iran, Tehran, Iran
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15
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Dehkordi ZS, Zakeri S, Nabian S, Bahonar A, Ghasemi F, Noorollahi F, Rahbari S. Molecular and biomorphometrical identification of ovine babesiosis in iran. Iran J Parasitol 2010; 5:21-30. [PMID: 22347262 PMCID: PMC3279853] [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: 06/20/2010] [Accepted: 11/17/2011] [Indexed: 11/24/2022]
Abstract
BACKGROUND Ovine babesiosis is the most important haemoparasitic tick-borne disease of small ruminants in Iran caused by Babesia ovis, B. motasi, and B. crassa. The aim of this study was to characterize the species of ovine Babesia species isolated from different geographical region of Iran. METHODS One hundred fifty four blood samples collected from animals, which demonstrated the pale mucous membranes or hyperthermia. The specimens were transferred to the laboratory and the blood smears stained with Geimsa, the morphological and biometrical data of parasite in any infected erythrocyte have been considered. Extracted DNA from each blood samples were used in PCR and semi nested- PCR in order to confirm the presence of the species. RESULTS Microscopical observation on 154 blood smears determined 38 (24.67%) and 40 (26%) samples were infected by Babesia and Theileria respectively. The mixed infections occurred in four (2.6%) samples. The results of the PCR assays showed nine (5.85%), 81 (53%) and 18 (11.7%) were distinguished as Babesia, Theileria and mixed infection, respectively. Semi nested- PCR did not confirm the presence of B. motasi. CONCLUSION The causative organism of many cases of haemoprotozoal diseases, which recorded in previous studies, could be B. ovis or Theileria lestoquardi. The result confirmed that B. ovis was only species which causes babesiosis in the study areas. It seems that the biometrical polymorphisms could exist in B. ovis in Iran. This polymorphism could be a main problem in differentiation between B. ovis and B. motasi and it could be dissolved by specific PCR analysis.
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Affiliation(s)
| | - S Zakeri
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - S Nabian
- Dept of Food Hygiene & Quality Control, Veterinary Faculty, University of Tehran, Iran
| | - A Bahonar
- Dept of Food Hygiene & Quality Control, Veterinary Faculty, University of Tehran, Iran
| | - F Ghasemi
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - F Noorollahi
- Parasitic Diseases Control Group, Iranian Veterinary Organization, Tehran, Iran
| | - S Rahbari
- Dept. of Parasitology, Veterinary Faculty, University of Tehran, Iran
,Corresponding author: Fax: +98-21-66933222, E-mail:
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Raz A, Dinparast Djadid N, Zakeri S. Molecular characterization of carboxypeptidase B (CPB) of An. stephensi with respect to TBV strategy in states under WHO/EMRO. N Biotechnol 2010. [DOI: 10.1016/j.nbt.2010.01.032] [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]
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Gholizadeh S, Djadid ND, Basseri H, Zakeri S, Ladoni H. Expression, purification, and structural analysis of Iranian Plasmodium vivax von Willebrand factor A domain-related protein (PvWARP). N Biotechnol 2010. [DOI: 10.1016/j.nbt.2010.01.208] [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: 10/19/2022]
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Djadid ND, Jazayeri H, Gholizadeh S, Rad SP, Zakeri S. First record of a new member of Anopheles Hyrcanus Group from Iran: molecular identification, diagnosis, phylogeny, status of kdr resistance and Plasmodium infection. J Med Entomol 2009; 46:1084-1093. [PMID: 19769039 DOI: 10.1603/033.046.0515] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The current study aimed to provide further evidence on the status of species composition, insecticide resistance, and vectorial capacity within the members of Anopheles (Anopheles) Hyrcanus Group in Ardebil, Giulan, and Khuzestan provinces of Iran. Sequencing the internal transcribed spacer 2 (ITS2) of ribosomal DNA gene led to identification of two members of Hyrcanus complex: Anopheles hyrcanus Pallas and a new species/form, hereafter called Anopheles hyrcanus sp(IR) as a world record. Furthermore, we identified and compared partial sequences of exons I and II and the whole intron I region of insecticide resistance-related voltage-gated sodium channel (vgsc) gene in populations of Hyrcanus Group and other main old world Anopheles species. The ITS2 and vgsc sequences in members of Hyrcanus Group and other Anopheles species were used for construction of phylogenetic tree, which demonstrated the evolutionary relatedness among Western and Eastern Palearctic taxa within the Hyrcanus Group. A nested polymerase chain reaction assay for detection of Plasmodium species revealed the infection of Plasmodium falciparum within An. hyrcanus collected from Fooman district in Guilan province. The data from this study led to the introduction of a new member/form within the Hyrcanus Group, identification and definition of the status of knockdown resistance related to pyrethroids and DDT in their vgsc gene, detection of Plasmodium infection, and further evidence on genetic relatedness within these taxa. The overall results may suggest reconsidering the role ofAn. hyrcanus in malaria transmission, which would be useful for implementation and evaluation of malaria control programs in Western Palearctic region.
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Affiliation(s)
- N Dinparast Djadid
- Malaria and Vector Research Group, Biotechnology Research Center (BRC), Pasteur Institute of Iran, P.O. Box 1316943551, Tehran, Iran.
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Zakeri A, Fadaei M, Zakeri S. The comparative study of the effect of virginamycine and mannan-oligosaccharides (MOS) on humoral immunity of broiler chickens. Vet Immunol Immunopathol 2009. [DOI: 10.1016/j.vetimm.2008.10.099] [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: 11/24/2022]
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20
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Ursing J, Zakeri S, Gil JP, Björkman A. Quinoline resistance associated polymorphisms in the pfcrt, pfmdr1 and pfmrp genes of Plasmodium falciparum in Iran. Acta Trop 2006; 97:352-6. [PMID: 16490179 DOI: 10.1016/j.actatropica.2006.01.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [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: 08/11/2005] [Revised: 12/28/2005] [Accepted: 01/04/2006] [Indexed: 10/25/2022]
Abstract
Plasmodium falciparum resistance to chloroquine (CQ) has been documented in Iran since the early 1980s and has since gradually increased. Iran is therefore reviewing its national drug policy for malaria control. We describe the prevalence of single nucleotide polymorphisms (SNP) associated with quinoline drug resistance in south eastern Iran. Pre-treatment blood from patients with uncomplicated but symptomatic P. falciparum infection was analysed. Polymorphisms at codons 76, 152, 163 and 220 of the pfcrt gene (chloroquine resistance transporter) and at codons 86, 184, 1034, 1042 and 1246 of the pfmdr1 gene (multidrug resistance) were determined by PCR-RFLP and sequencing. In addition, SNPs on a recently described multidrug resistance protein (pfmrp) and a microsatellite (MS-4760) in the pfnhe-1 (sodium hydrogen exchanger) gene associated with quinoline and quinine resistance, respectively, were investigated for the first time in field samples not from Thailand. pfcrt 76T was found in 99% and pfmdr1 86Y in 72% of the samples. pfmrp 191H and 437S associated with decreased quinoline response were found to be absolutely linked at a frequency of 13.6%. The pfnhe-1 MS-4760 one repeat allele associated to quinine response in vitro was also detected. Sequencing of the pfcrt 72-76 haplotype revealed that SVMNT was the most common allele as previously observed in India. This suggests that pfcrt found in the Iranian P. falciparum population may have the same origin as in the P. falciparum populations in India but different from that normally found in south east Asia. In conclusion, the frequencies of quinoline resistance associated gene polymorphisms in this region suggest a population that has been significantly selected for by the long use of CQ.
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Affiliation(s)
- J Ursing
- Malaria Research Unit, Division of Infectious Diseases, Department of Medicine, Karolinska University Hospital, Karolinska Institutet, Sweden
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Zakeri S, Mamaghani S, Mehrizi AA, Shahsavari Z, Raeisi A, Arshi S, Djadid ND. Molecular evidence of mixed P. vivax and P. falciparum infections in northern Islamic Republic of Iran. East Mediterr Health J 2004. [DOI: 10.26719/2004.10.3.336] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This study compared basic microscopy with molecular detection of Plasmodium species. According to thick-film microscopy, 100% of 142 malaria cases in Pars-Abad, Ardebil province, were infected with a single species, P vivax. However, nested polymerase chain reaction [PCR] detected mixed species infections of both P. vivax and P. falciparum in 7.0%. In Maz and eran province, 2/20 blood films were diagnosed with only P. falciparum and 18/20 with only P. vivax. However, nested PCR detected 17/20, 2/20 and 1/20 with P. vivax only, P. falciparum only and mixed species respectively. The unexpected presence of P. falciparum urges prompt investigation and immediate treatment of malaria cases in this region
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Zakeri S, Mamaghani S, Mehrizi AA, Shahsavari Z, Raeisi A, Arshi S, Dinparast-Djadid N. Molecular evidence of mixed P. vivax and P. falciparum infections in northern Islamic Republic of Iran. East Mediterr Health J 2004; 10:336-42. [PMID: 16212210] [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: 05/04/2023]
Abstract
This study compared basic microscopy with molecular detection of Plasmodium species. According to thick-film microscopy, 100% of 142 malaria cases in Pars-Abad, Ardebil province, were infected with a single species, P vivax. However, nested polymerase chain reaction (PCR) detected mixed species infections of both P. vivax and P. falciparum in 7.0%. In Mazanderan province, 2/20 blood films were diagnosed with only P. falciparum and 18/20 with only P. vivax. However, nested PCR detected 17/20, 2/20 and 1/20 with P. vivax only, P. falciparum only and mixed species respectively. The unexpected presence of P. falciparum urges prompt investigation and immediate treatment of malaria cases in this region.
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Affiliation(s)
- S Zakeri
- Malaria Research Group, Biotechnology Department, Pasteur Institute of Iran, Tehran, Islamic Republic of Iran
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Abstract
Previous studies have shown that 'toxic malarial antigens' released by Plasmodium yoelii can induce hypoglycaemia in mice and act synergistically with insulin in stimulating lipogenesis in rat adipocytes in vitro. In this study, it was shown that similar bioactivity could be detected in Plasmodium falciparum culture supernatant, and the molecular basis of this activity was further investigated. Boiled spent culture medium from P. falciparum cultures ('BS-Pf') (exclusively released into the culture supernatant when schizonts rupture) acts in synergy with insulin to increase lipogenesis in a rat adipocyte assay by more than 250% (P < 0.001). Control preparations prepared from non-parasitized erythrocytes grown under similar conditions had no effect (P < 0.001). While contamination with mycoplasma has previously been shown to interfere with the interpretation of data obtained with other molecules thought to be released from P. falciparum in culture, including those inducing TNF-alpha and NO production by macrophages, such contamination was unequivocally ruled out here. BS-Pf alone did not stimulate the lipogenesis in short-term assays (less than 4 h), while long-term exposure of rat adipocytes to BS-Pf alone (12-24 h) caused a stimulation of lipogenesis at a level comparable to that observed with insulin. Furthermore, lipogenesis-inducing activity was also detected in the serum of squirrel monkeys infected with different species of malaria parasites (P. vivax, P. falciparum and P. brasilianum). Preliminary biochemical characterization showed that the biological activity was found in the solvent-extracted polar lipid fraction of boiled supernatant of P. falciparum cultures. All the different polar lipid fractions, collected from silica gel column chromatography, showed a comparable lipogenesis-inducing activity. Enzymatic treatment by phospholipase C of the lipid fraction, which co-migrated with the phosphatidylcholine standard, showed that the activity of the fraction was associated with the 1,2-diacylglycerol (1,2-DAG) moieties released from polar lipids. When this exogenous 1,2-DAG was added to the adipocyte cultures (short- and long-term cultures), it induced stimulation of lipogenesis in rat adipocytes, while no lipogenic activity was obtained from bacterial polar lipids and 1,2-DAG isolated from unparasitized erythrocytes. The importance of these findings is discussed with reference to other toxic malarial antigens and also to the potential role of these molecules in the induction of hypoglycaemia in the severe forms of malaria.
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Affiliation(s)
- S Zakeri
- Molecular Biology and Immunology Division, Liverpool School of Tropical Medicine, University of Liverpool, Pembroke Place, L3 5QA, Liverpool, UK
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Gasche C, Bakos S, Dejaco C, Tillinger W, Zakeri S, Reinisch W. IL-10 secretion and sensitivity in normal human intestine and inflammatory bowel disease. J Clin Immunol 2000; 20:362-70. [PMID: 11051278 DOI: 10.1023/a:1006672114184] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Interleukin-10 (IL-10) deficiency in gene knockout mice causes chronic enterocolitis. We hypothesized that inflammation in human inflammatory bowel disease might result from innate alterations in the IL-10 pathway. Serum, supernatants, and mRNA of peripheral blood mononuclear cells (PBMC) and lamina propria mononuclear cells (LPMC) derived from inflamed (LPMC-i) and noninflamed colonic mucosa (LPMC-ni) were collected from patients with Crohn's colitis, ulcerative colitis, and controls. IL-10 protein concentrations and IL-10 mRNA were examined in response to PMA/CD3 or PHA stimulation. The response to rhIL-10 was assessed by inhibition of tumor necrosis factor-alpha (TNF-alpha), IL-6, and interferon-gamma (IFN-gamma) production. Serum IL-10 levels of inflammatory bowel disease (IBD) patients were within the normal range. IL-10 concentrations in supernatants from LPMC-i were significantly lower than from LPMC-ni or PBMC. No difference was seen between samples from ulcerative colitis and Crohn's disease. IL-10 mRNA was detected in 0/4 LPMC-i samples compared to 1/6 LPMC-ni and 6/6 PBMC. RhIL-10 inhibited TNF-alpha, IL-6, and IFN-gamma synthesis in PBMC. This effect was strongly diminished in LPMC. Disease-specific alterations were not detected. Our data suggest that LPMC derived from inflamed colonic mucosa have a reduced ability to produce and to respond to rhIL-10. A disease-specific alteration in the IL-10 pathway, however, was not found.
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Affiliation(s)
- C Gasche
- Department of Gastroenterology and Hepatology, University of Vienna, Austria.
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25
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Lichtenberger C, Zakeri S, Baier K, Willheim M, Holub M, Reinisch W. A novel high-purity isolation method for human peripheral blood neutrophils permitting polymerase chain reaction-based mRNA studies. J Immunol Methods 1999; 227:75-84. [PMID: 10485256 DOI: 10.1016/s0022-1759(99)00076-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In the past few years, the role of polymorphonuclear neutrophils (PMN) in specific immune responses has gained significance due to their ability to express a variety of immunoregulatory molecules. However, controversial results concerning the potential of neutrophils for cytokine production have been obtained by sensitive molecular biological techniques. This problem might be related to contaminating leukocytes in conventionally isolated neutrophil suspensions as outlined by our study. We have established a novel method yielding highly purified neutrophils by combining a discontinuous Percoll gradient with fluorescence activated cell sorting of CD16bright cells. The latter step exploits the exceptionally high expression of Fc gammaRIIIB on PMN. Neutrophils could be enriched to homogeneity (> 99.9%) with a viability exceeding 90%. Contamination with NK cells or other lymphocytes, monocytes and eosinophils could be excluded as evaluated by reverse transcription-polymerase chain reaction (RT-PCR) with primers for HLA-DR, c-fms and CD52. The transcriptional potential of such purified neutrophils was confirmed by their ability to express MHC class II molecules after stimulation with granulocyte-macrophage colony-stimulating factor (GM-CSF). Our method should permit studies of PMN at the mRNA level and future investigations concerning the specificity of immunoregulatory molecule synthesis by neutrophils.
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Affiliation(s)
- C Lichtenberger
- Clinic of Internal Medicine IV, Department of Gastroenterology and Hepatology, University of Vienna, Austria
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