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Mahmoodi M, Rafiee E, Eavani S. Photocatalytic removal of toxic dyes, liquorice and tetracycline wastewaters by a mesoporous photocatalyst under irradiation of different lamps and sunlight. J Environ Manage 2022; 313:115023. [PMID: 35398644 DOI: 10.1016/j.jenvman.2022.115023] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 01/28/2022] [Revised: 04/02/2022] [Accepted: 04/03/2022] [Indexed: 06/14/2023]
Abstract
Simple recyclable K5CoW12O40/TiO2 was synthesized and used to remove methyl orange, rhodamine B, direct red 16 and crystal violet toxic organic dyes, liquorice industrial wastewater and tetracycline (TC) as an antibiotic. Photoactivity of the catalyst was checked out under irradiation of various lamps (such as 18 W fluorescent, 300 W Xenon, LED and IR lamps). The best efficiency was obtained by fluorescent lamp at catalyst loading of 3 g/L, initial pH of 5, initial dye concentration of 5 ppm, complete degradation was achieved after 30 min contact time. Mechanistic investigation showed that·O2 radicals and h+ are majorly responsible for photodegradation in this process. Electrochemical investigation, Nyquist, Bode, Mott-Schottky, Tauc plots and photoluminescence proved that using this photocatalyst delay the electron-hole recombination, increase the lifetime of excited electron, extend light absorption to visible region and improve the light absorption capacity. This photocatalyst work well under winter sunlight. Also 97% and 84% dye removal was obtained for liquorice with 300 and 1000 COD at optimal condition. This catalyst showed similar activity for TC wastewater. Photocatalyst was characterized by FE-SEM, EDX, AFM, FT-IR, XRD, PL, DRS, EIS, BJH and BET.
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Affiliation(s)
- M Mahmoodi
- Faculty of Chemistry, Razi University, Kermanshah, 6714414971, Iran
| | - E Rafiee
- Faculty of Chemistry, Razi University, Kermanshah, 6714414971, Iran; Institute of Nanoscience and Nanotechnology, Razi University, Kermanshah, 6714414971, Iran.
| | - S Eavani
- Faculty of Chemistry, Razi University, Kermanshah, 6714414971, Iran
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Marofi F, Al-Awad AS, Sulaiman Rahman H, Markov A, Abdelbasset WK, Ivanovna Enina Y, Mahmoodi M, Hassanzadeh A, Yazdanifar M, Stanley Chartrand M, Jarahian M. CAR-NK Cell: A New Paradigm in Tumor Immunotherapy. Front Oncol 2021; 11:673276. [PMID: 34178661 PMCID: PMC8223062 DOI: 10.3389/fonc.2021.673276] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [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: 03/09/2021] [Accepted: 05/14/2021] [Indexed: 12/15/2022] Open
Abstract
The tumor microenvironment (TME) is greatly multifaceted and immune escape is an imperative attribute of tumors fostering tumor progression and metastasis. Based on reports, the restricted achievement attained by T cell immunotherapy reflects the prominence of emerging other innovative immunotherapeutics, in particular, natural killer (NK) cells-based treatments. Human NK cells act as the foremost innate immune effector cells against tumors and are vastly heterogeneous in the TME. Currently, there exists a rapidly evolving interest in the progress of chimeric antigen receptor (CAR)-engineered NK cells for tumor immunotherapy. CAR-NK cells superiorities over CAR-T cells in terms of better safety (e.g., absence or minimal cytokine release syndrome (CRS) and graft-versus-host disease (GVHD), engaging various mechanisms for stimulating cytotoxic function, and high feasibility for 'off-the-shelf' manufacturing. These effector cells could be modified to target various antigens, improve proliferation and persistence in vivo, upturn infiltration into tumors, and defeat resistant TME, which in turn, result in a desired anti-tumor response. More importantly, CAR-NK cells represent antigen receptors against tumor-associated antigens (TAAs), thereby redirecting the effector NK cells and supporting tumor-related immunosurveillance. In the current review, we focus on recent progress in the therapeutic competence of CAR-NK cells in solid tumors and offer a concise summary of the present hurdles affecting therapeutic outcomes of CAR-NK cell-based tumor immunotherapies.
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Affiliation(s)
- Faroogh Marofi
- Immunology Research Center (IRC), Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Heshu Sulaiman Rahman
- College of Medicine, University of Sulaimani, Sulaymaniyah, Iraq
- Department of Medical Laboratory Sciences, Komar University of Science and Technology, Sulaymaniyah, Iraq
| | - Alexander Markov
- Tyumen State Medical University, Tyumen, Russia
- Tyumen Industrial University, Tyumen, Russia
| | - Walid Kamal Abdelbasset
- Department of Health and Rehabilitation Sciences, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Al Kharj, Saudi Arabia
- Department of Physical Therapy, Kasr Al-Aini Hospital, Cairo University, Giza, Egypt
| | | | - Mahnaz Mahmoodi
- Department of Biology, School of Basic Science, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Ali Hassanzadeh
- Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahboubeh Yazdanifar
- Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford University School of Medicine, Palo Alto, CA, United States
| | | | - Mostafa Jarahian
- German Cancer Research Center, Toxicology and Chemotherapy Unit (G401), Heidelberg, Germany
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Ahani-Nahayati M, Shariati A, Mahmoodi M, Olegovna Zekiy A, Javidi K, Shamlou S, Mousakhani A, Zamani M, Hassanzadeh A. Stem cell in neurodegenerative disorders; an emerging strategy. Int J Dev Neurosci 2021; 81:291-311. [PMID: 33650716 DOI: 10.1002/jdn.10101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 01/11/2021] [Revised: 02/13/2021] [Accepted: 02/24/2021] [Indexed: 01/28/2023] Open
Abstract
Neurodegenerative disorders are a diversity of disorders, surrounding Alzheimer's (AD), Parkinson's (PD), Huntington's diseases (HD), and amyotrophic lateral sclerosis (ALS) accompanied by some other less common diseases generally characterized by either developed deterioration of central or peripheral nervous system structurally or functionally. Today, with the viewpoint of an increasingly aging society, the number of patients with neurodegenerative diseases and sociomedical burdens will spread intensely. During the last decade, stem cell technology has attracted great attention for treating neurodegenerative diseases worldwide because of its unique attributes. As acknowledged, there are several categories of stem cells being able to proliferate and differentiate into various cellular lineages, highlighting their significance in the context of regenerative medicine. In preclinical models, stem cell therapy using mesenchymal stem/stromal cells (MSCs), hematopoietic stem cells (HSCs), and neural progenitor or stem cells (NPCs or NSCs) along with pluripotent stem cells (PSCs)-derived neuronal cells could elicit desired therapeutic effects, enabling functional deficit rescue partially. Regardless of the noteworthy progress in our scientific awareness and understanding of stem cell biology, there still exist various challenges to defeat. In the present review, we provide a summary of the therapeutic potential of stem cells and discuss the current status and prospect of stem cell strategy in neurodegenerative diseases, in particular, AD, PD, ALS, and HD.
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Affiliation(s)
- Milad Ahani-Nahayati
- Department of Tissue Engineering and Applied Cell Science, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Ali Shariati
- Stem Cell Research Center, Tehran University of Medical Science, Tehran, Iran
| | - Mahnaz Mahmoodi
- Department of Biology, School of Basic Science, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Angelina Olegovna Zekiy
- Department of Prosthetic Dentistry, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Kamran Javidi
- School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran.,Immunology Research Center (IRC), Tabriz University of Medical Sciences, Tabriz, Iran
| | - Somayeh Shamlou
- Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Akbar Mousakhani
- Department of Plant Sciences, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Majid Zamani
- Department of Medical Laboratory Sciences, Faculty of Allied Medicine, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Ali Hassanzadeh
- Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Neurosciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
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Sadeghzadeh F, Mehranjani MS, Mahmoodi M. Vitamin C ameliorates the adverse effects of dexamethasone on sperm motility, testosterone level, and spermatogenesis indexes in mice. Hum Exp Toxicol 2018; 38:409-418. [PMID: 30526067 DOI: 10.1177/0960327118816137] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND: Dexamethasone (DEX) is a common medicine that is capable of causing malformation in the male reproductive system. The aim of this study was to investigate the effect of vitamin C (Vit-C) on spermatogenesis indexes and daily sperm production (DSP) in adult mice treated with DEX. METHODS: Male Naval Medical Research Institute (NMRI) mice were divided into four groups: Control, DEX (7 mg/kg/day), Vit-C (100 mg/kg/day), and DEX +Vit-C and treated for 7 days with intraperitoneal injection. RESULTS: A significant increase in the mean levels of serum and tissue malondialdehyde (MDA) and apoptosis of Leydig cells was found in the DEX group compared to the control group. Sperm motility, DSP, tubular differentiation index, meiotic index, spermatogenesis index, the mean number of spermatocytes, round and long spermatids, and Leydig cells, and also serum testosterone level decreased in the DEX group compared to the control group. The results of this study indicate that Vit-C can significantly prevent the adverse effects of DEX on the mean number of spermatocyte, spermatid, and Leydig cells, tubular differentiation, meiotic and spermatogenesis index, DSP, sperm motility, and the mean levels of serum MDA. CONCLUSION: In conclusion, our results showed that coadministration of Vit-C and DEX prevents the adverse effects of DEX on the spermatogenesis indexes and DSP.
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Affiliation(s)
- F Sadeghzadeh
- Department of Biology, Faculty of Science, Arak University, Arak, Iran
| | - M S Mehranjani
- Department of Biology, Faculty of Science, Arak University, Arak, Iran
| | - M Mahmoodi
- Department of Biology, Faculty of Science, Arak University, Arak, Iran
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Pakshir K, Fakhim H, Vaezi A, Meis JF, Mahmoodi M, Zomorodian K, Javidnia J, Ansari S, Hagen F, Badali H. Molecular epidemiology of environmental Cryptococcus species isolates based on amplified fragment length polymorphism. J Mycol Med 2018; 28:599-605. [PMID: 30322827 DOI: 10.1016/j.mycmed.2018.09.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 06/09/2018] [Revised: 09/15/2018] [Accepted: 09/25/2018] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Cryptococcosis is a major opportunistic fungal infection caused by members of the genus Cryptococcus, mainly those belonging to the Cryptococcus neoformans/Cryptococcus gattii species complexes. Here, we report a comprehensive molecular epidemiological study of the environmental distribution of Cryptococcus isolates in Shiraz, Iran with review of litreature. METHOD A total of 406 samples were obtained from Eucalyptus trees and 139 samples from pigeon droppings. Cryptococcus species identification and genotyping were performed by amplified fragment length polymorphism (AFLP) fingerprinting sequencing and sequencing of the ITS rDNA region. RESULTS Majority of the isolates belonged to the Naganishia taxon (n=69) including N. albida (formerly C. albidus, n=62), N. globosa (formerly C. saitoi, n=4), N. adeliensis (formerly C. adeliensis, n=2), N. diffluens (formerly C. diffluens, n=1), and the identified C. neoformans isolates (n=25) belonged to genotype AFLP1/VNI (n=22) and AFLP1B/VNII (n=3). CONCLUSION More research efforts should be employed to isolate C. gattii species complex from environmental niches in Iran and provide additional evidence related to novel molecular types.
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Affiliation(s)
- K Pakshir
- Basic Sciences in Infectious Diseases Research Center, Department of Medical Parasitology and Mycology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - H Fakhim
- Department of Medical Mycology and Parasitology, Urmia University of Medical Sciences, Urmia, Iran; Cellular and Molecular Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - A Vaezi
- Department of Medical Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - J F Meis
- Department of Medical Microbiology and Infectious Diseases, Canisius-Wilhelmina Hospital (CWZ), Nijmegen, The Netherlands; Centre of Expertise in Mycology Radboudumc/CWZ, Nijmegen, The Netherlands
| | - M Mahmoodi
- Basic Sciences in Infectious Diseases Research Center, Department of Medical Parasitology and Mycology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - K Zomorodian
- Basic Sciences in Infectious Diseases Research Center, Department of Medical Parasitology and Mycology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - J Javidnia
- Department of Medical Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran; Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - S Ansari
- Department of Medical Parasitology and Mycology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - F Hagen
- Department of Medical Microbiology and Infectious Diseases, Canisius-Wilhelmina Hospital (CWZ), Nijmegen, The Netherlands; Department of Medical Mycology, Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
| | - H Badali
- Department of Medical Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran; Invasive Fungi Research Center, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.
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Karimabad MN, Mahmoodi M, Jafarzadeh A, Darekordi A, Hajizadeh MR, Khorramdelazad H, Sayadi AR, Khanamani Falahati-Pour S, Hassanshahi G. Regulatory effects of the novel synthesized Indole-3-carbaldehyde on expression of cell cycle genes: A study on Cyclin D and P21 expression by acute promylocytic leukemia cell line (NB4). ACTA ACUST UNITED AC 2017; 63:60-67. [PMID: 28719347 DOI: 10.14715/cmb/2017.63.5.12] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 05/03/2017] [Accepted: 05/04/2017] [Indexed: 11/18/2022]
Abstract
This article has been withdrawn. The Publisher and the editor apologize for any inconvenience this may cause.
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Affiliation(s)
- M N Karimabad
- Molecular Medicine Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - M Mahmoodi
- Molecular Medicine Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - A Jafarzadeh
- Molecular Medicine Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - A Darekordi
- Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - M R Hajizadeh
- Molecular Medicine Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - H Khorramdelazad
- Molecular Medicine Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - A R Sayadi
- Social Determinants of Health Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | | | - G Hassanshahi
- Molecular Medicine Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
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Abstract
A new thrips species, Eryngyothrips veisii sp. n. (Thripidae, Thripinae) is described and illustrated based on individual specimens collected from Choqasabz Forest Park (Ilam Province), western Iran. This new species is most similar to E. discolor Bhatti, but is readily distinguished from the latter by divided ferna, prothorax color yellowish brown, absence of metanotal campaniform sensilla, and the longest postocular setae pair III.
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Moradi M, Mahmoodi M, Raoofi A, Ghanbari A. Chorionic morphine, naltrexone and pentoxifylline effect on hypophyso-gonadal hormones of male rats. BRATISL MED J 2015; 116:276-9. [PMID: 25773958 DOI: 10.4149/bll_2015_053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Knowledge about harmful effects of morphine on hormone secretion seems to be necessary. The aim of the present study was to evaluate the effect of pentoxifylline on side effects derived by morphine on hypophyso-gonadal hormones of male rats. METHODS 32 male rats were divided into the 4 groups of OSS: control (received 40 g Sucrose/l drinking water and intraperitoneal injection of 1 l/kg normal saline), OMS: morphine group (received 0.4 mg/l + 40 g Sucrose/l in drinking water and intraperitoneal injection of 1 l/kg normal saline), NMS: morphine+naltrexane group (received 0.4 mg/l + 40 g Sucrose/l in drinking water and IP injection dose of 10 mg/kg/ml/day Naltrexane) and PMS: morphine + pentoxifylline group (received 0.4 mg/dl + 40 g Sucrose/l in drinking water and IP injection dose of 12 mg/kg/ml/day Pentoxifylline) for 56 days, respectively. RESULTS Serum levels of testosterone, LH, FSH hormones were measured. Pentoxifylline increased serum levels of testosterone, LH, FSH hormones compared to control, morphine and morphine-naltrexane groups. CONCLUSION Pentoxifylline has a significant efficacy for increasing serum levels of sexual hormones. Considering that Pentoxifylline is safe and cheap, with easy application, we suggest for the usage of this drug for improving semen parameter's quality before performing ART for the treatment of morphine addicts (Fig. 1, Ref. 31).
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Nguyen-Dumont T, Mahmoodi M, Hammet F, Tran T, Tsimiklis H, Giles GG, Hopper JL, Southey MC, Park DJ. Hi-Plex targeted sequencing is effective using DNA derived from archival dried blood spots. Anal Biochem 2014; 470:48-51. [PMID: 25447460 DOI: 10.1016/j.ab.2014.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 08/21/2014] [Revised: 10/15/2014] [Accepted: 10/17/2014] [Indexed: 11/28/2022]
Abstract
Many genetic epidemiology resources have collected dried blood spots (predominantly as Guthrie Cards) as an economical and efficient means of archiving sources of DNA, conferring great value to genetic screening methods that are compatible with this medium. We applied Hi-Plex to screen the breast cancer predisposition gene PALB2 in 93 Guthrie Card-derived DNA specimens previously characterized for PALB2 genetic variants via DNA derived from lymphoblastoid cell lines, whole blood, and buffy coat. Of the 93 archival Guthrie Card-derived DNAs, 92 (99%) were processed successfully and sequenced using approximately half of a MiSeq run. From these 92 DNAs, all 59 known variants were detected and no false-positive variant calls were yielded. Fully 98.13% of amplicons (5417/5520) were represented within 15-fold of the median coverage (2786 reads), and 99.98% of amplicons (5519/5520) were represented at a depth of 10 read-pairs or greater. With Hi-Plex, we show for the first time that a High-Plex amplicon-based massively parallel sequencing (MPS) system can be applied effectively to DNA prepared from dried blood spot archival specimens and, as such, can dramatically increase the scopes of both method and resource.
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Affiliation(s)
- T Nguyen-Dumont
- Genetic Epidemiology Laboratory, Department of Pathology, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - M Mahmoodi
- Genetic Epidemiology Laboratory, Department of Pathology, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - F Hammet
- Genetic Epidemiology Laboratory, Department of Pathology, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - T Tran
- Genetic Epidemiology Laboratory, Department of Pathology, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - H Tsimiklis
- Genetic Epidemiology Laboratory, Department of Pathology, University of Melbourne, Melbourne, Victoria 3010, Australia
| | | | - G G Giles
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Victoria 3004, Australia
| | - J L Hopper
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, Parkville, Victoria 3010, Australia
| | | | - M C Southey
- Genetic Epidemiology Laboratory, Department of Pathology, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - D J Park
- Genetic Epidemiology Laboratory, Department of Pathology, University of Melbourne, Melbourne, Victoria 3010, Australia.
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Mahmoodi M, Shahidi S, Hashemi-Firouzi N, Komaki A. Morphological Effects of Combined Systemic Administration of Fluoxetine and Sildenafil in the Murine Hippocampus. NEUROPHYSIOLOGY+ 2013. [DOI: 10.1007/s11062-013-9371-8] [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: 10/26/2022]
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Paniz Mondolfi AE, Cressey BD, Ahmad A, Tapia-Centola B, Cohen LM, Mahmoodi M. Granulomatous Alopecia: A Variant of Alopecia Areata? J Cutan Pathol 2013; 40:357-60. [DOI: 10.1111/cup.12126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2012] [Indexed: 11/28/2022]
Affiliation(s)
| | - BD Cressey
- Miraca Life Sciences Research Institute/Tufts Medical Center; Department of Dermatology; 800 Washington Street, Box 114; Boston; MA; 02111
| | - A Ahmad
- Department of Pathology; Duke University Medical Center; Durham; NC; 27710
| | | | | | - M Mahmoodi
- Miraca Life Sciences Research Institute/Tufts Medical Center; Department of Dermatology; 800 Washington Street, Box 114; Boston; MA; 02111
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Shahidi S, Hashemi-Firouzi N, Mahmoodi M. Co-administration of fluoxetine and Sildenafil has benefits in anxiety behavior in mice. NEUROCHEM J+ 2013. [DOI: 10.1134/s181971241301008x] [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: 11/22/2022]
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Dorgalaleh A, Mahmoodi M, Varmaghani B, Kiani node F, Saeeidi Kia O, Alizadeh S, Tabibian S, Bamedi T, Momeni M, Abbasian S, Kashani Khatib Z. Effect of thyroid dysfunctions on blood cell count and red blood cell indice. Iran J Ped Hematol Oncol 2013; 3:73-7. [PMID: 24575274 PMCID: PMC3915449] [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: 11/20/2012] [Accepted: 03/10/2013] [Indexed: 11/17/2022]
Abstract
BACKGROUND Thyroid hormones have a crucial role in metabolism and proliferation of blood cells. Thyroid dysfunction induces different effects on blood cells such as anemia, erythrocytosis leukopenia, thrombocytopenia, and in rare cases causes' pancytopenia. It also alter RBC indices include MCV, MCH, MCHC and RDW. Thus this study attempted to evaluate effect of hypo & hyperthyroidism on blood cell count and RBC indices. MATERIALS AND METHODS This study performed on 102 patients with hypothyroid (14.1 years), 84 with hyperthyroid (15.6 years) and 118 healthy individuals (15.2 years) as control group. Initially patients TSH level of patients was determined by ELISA method, and then according to TSH ranges (0.3-5.5µIU/mL) patients were divided into two Hyperthyroidism (TSH<0.3µIU/mL) and hypothyroidism (TSH>5.5µIU/mL) groups. Then, complete blood count was measured by cell counter. Finally, obtained results were analyzed by SPSS software. RESULTS Analyzes of obtained data revealed statistically significant difference between two groups of patients in RBC count, MCH, MCHC, RDW, HB and HCT(P-value<0.05), but the difference was not significant for WBC and PLT counts and MCV (P-value>0.05). CONCLUSION In case of patients with unknown hematological dysfunctions, must be evaluated for thyroid hormones.
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Affiliation(s)
- A Dorgalaleh
- Hematology Department Allied Medical School, Tehran University of Medical Sciences, Tehran, Iran
| | - M Mahmoodi
- Pars pathobiology laboratory, Minoodasht, Golestan, Iran
| | - B Varmaghani
- Hematology Department Allied Medical School, Tehran University of Medical Sciences, Tehran, Iran
| | - F Kiani node
- Hematology Department Allied Medical School, Tehran University of Medical Sciences, Tehran, Iran
| | - O Saeeidi Kia
- Medical Laboratory Sciences Department Allied Medical School, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Sh Alizadeh
- Hematology Department Allied Medical School, Tehran University of Medical Sciences, Tehran, Iran
| | - Sh Tabibian
- Hematology Department Allied Medical School, Tehran University of Medical Sciences, Tehran, Iran
| | - T Bamedi
- Parasitology Department Allied Medical School, Zahedan University of Medical Sciences, Zahedan, Iran
| | - M Momeni
- Imam Ali hospital, Sistan and Baluchistan, Chahbahar, Iran
| | - S Abbasian
- Hematology Department Allied Medical School, Tehran University of Medical Sciences, Tehran, Iran
| | - Z Kashani Khatib
- Hematology Department Allied Medical School, Tehran University of Medical Sciences, Tehran, Iran
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Tol A, Pourreza A, Shojaeezadeh D, Mahmoodi M, Mohebbi B. The Assessment of Relations between Socioeconomic Status and Number of Complications among Type 2 Diabetic Patients. Iran J Public Health 2012; 41:66-72. [PMID: 23113179 PMCID: PMC3468986] [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] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Accepted: 02/19/2012] [Indexed: 11/30/2022]
Abstract
BACKGROUND The prevalence of diabetes mellitus among Iranian aged 25-64 estimated to be about 7.7%. The aim of current study was the assessment of socioeconomic status of diabetic patients and their complications. METHODS A cross sectional study was conducted on type 2 diabetic patients with complications in four major teaching hospitals affiliated to Tehran University of Medical Sciences (TUMS) during July 2009 to March 2010. All patients (530) were interviewed through a questionnaire with 85% response rate (450 patients). Skilled nurses were assigned as responsible for data collection. Collected data analyzed by Exact Fisher and χ2 tests using SPSS version 11.5. RESULTS The majority of patients had experienced one or more complications. Findings revealed that 50%, 33.6% and 16.4% of the patients suffered from one, two, and three complications of type 2 diabetes, respectively. Patients with cardiovascular complications included 22.2%, with both cardiovascular and eye complications (12.7%), and with cardiovascular, eye and foot ulcer together 14% of the respondents. Frequency of complications demonstrated significant relation with sex, age, educational level, type of occupation, duration of diabetes (P<0.001) and social class (P=0.002). The majority of patients (54.2%) belonged to low income group. CONCLUSION It seems patients with low socioeconomic status face more challenges in their social environment together with less psychological support. Health care systems are responsible to empower them to control their illness and feel a better life to live.
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Affiliation(s)
- A Tol
- Dept. of Health Education and Promotion, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - A Pourreza
- Dept. of Health Economics and Management, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran,Corresponding Author:
| | - D Shojaeezadeh
- Dept. of Health Education and Promotion, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - M Mahmoodi
- Dept. of Biostatistics and Epidemiology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - B Mohebbi
- Shahid Rajaei Cardiovascular Medical and Research Center, Tehran, Iran
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Nazari SSH, Mahmoodi M, Mansournia MA, Naieni KH. Residential segregation and infant mortality: a multilevel study using Iranian census data. Iran J Public Health 2012; 41:69-79. [PMID: 23113167 PMCID: PMC3481617] [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: 07/27/2011] [Accepted: 01/15/2012] [Indexed: 11/20/2022]
Abstract
BACKGROUND There is a great amount of literature concerning the effect of racial segregation on health outcomes but few papers have discussed the effect of segregation on the basis of social, demographic and economic characteristics on health. We estimated the independent effect of segregation of determinants of socioeconomic status on infant mortality in Iranian population. METHODS For measuring segregation, we used generalized dissimilarity index for two group and multi group nominal variables and ordinal information theory index for ordinal variables. Sample data was obtained from Iranian latest national census and multilevel modeling with individual variables at level one and segregation indices measured at province level for socioeconomic status variables at level two were used to assess the effect of segregation on infant mortality. RESULTS Among individual factors, mother activity was a risk factor for infant mortality. Segregated provinces in regard to size of the house, ownership of a house and motorcycle, number of literate individual in the family and use of natural gas for cooking and heating had higher infant mortality. Segregation indices measured for education level, migration history, activity, marital status and existence of bathroom were negatively associated with infant mortality. CONCLUSION Segregation of different contextual characteristics of neighborhood had different effects on health outcomes. Studying segregation of social, economic, and demographic factors, especially in communities, which are racially homogenous, might reveal new insights into dissimilarities in health.
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Affiliation(s)
- SS Hashemi Nazari
- Dept. of Epidemiology and Biostatistics, School of public health, Tehran University of Medical Sciences, Tehran, Iran
| | - M Mahmoodi
- Dept. of Epidemiology and Biostatistics, School of public health, Tehran University of Medical Sciences, Tehran, Iran
| | - MA Mansournia
- Dept. of Epidemiology and Biostatistics, School of public health, Tehran University of Medical Sciences, Tehran, Iran
| | - K Holakouie Naieni
- Dept. of Epidemiology and Biostatistics, School of public health, Tehran University of Medical Sciences, Tehran, Iran,National Institute of Health Research, Tehran, Iran,Iranian Epidemiological Association, Tehran, Iran,Corresponding Author: Email :
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19
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Fathollahi MS, Mahmoodi M, Mohammad K, Zeraati H. Expected survival using models of life table compared with survival of gastrointestinal tract cancer patients in north of iran. Iran J Public Health 2011; 40:74-82. [PMID: 23113105 PMCID: PMC3481737] [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: 03/22/2011] [Accepted: 10/11/2011] [Indexed: 11/05/2022]
Abstract
BACKGROUND Northern regions of Iran have been encountered to dominate malignancies of gastrointestinal (GI) tract. We came to examine the total excess mortality due to the GI cancer in Mazandaran province. METHODS Socio-demographic and clinical data of 484 patients with GI cancer collected during the years 1990-1991 were available from Babol Cancer Registry. Patients were followed up for 15 years by the year 2006. Using the West Coale-Demeny life table model, a number of five life tables for men and four for women, corresponding to each birth cohort, were constructed. Observed survival was obtained using the Kaplan-Meier method and compared with the Expected survival calculated using the direct adjusted method represented by STEIN et al. RESULTS The sample of subjects encompassed 66.3% men and 33.7% women with mean age 58.26 ± 10.90, and endoscopy was the general method for cancer detection. Esophagus accounted for 74.2%, and stomach and colorectal accounted for 22.7% and 3.1% of GI cancers, respectively. Survival rate in 15 years following diagnosis was nearly 6%. Comparing patient and expected survival curves showed a significantly reduced survival for patients of each GI cancer over the whole period and especially during the first two years after diagnosis. CONCLUSION Patients experienced reduced survival associated with the development of GI cancers. Considering individuals in a population come from different cohorts, adjustment by constructing distinct life tables for different birth cohorts is recommended. The West model is recommended as a first choice to represent mortality in countries whose registration systems are exposed to various errors.
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Affiliation(s)
| | - M Mahmoodi
- Corresponding Author: Fax: (+98 216462267) E-mail:
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20
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Yaghini N, Mahmoodi M, Asadikaram GR, Hassanshahi GH, Khoramdelazad H, Kazemi Arababadi M. Serum levels of interleukin 10 (IL-10) in patients with type 2 diabetes. Iran Red Crescent Med J 2011; 13:752. [PMID: 22737417 PMCID: PMC3371882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 07/25/2011] [Indexed: 11/23/2022]
Affiliation(s)
- N Yaghini
- Department of Biochemistry, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - M Mahmoodi
- Department of Biochemistry, Rafsanjan University of Medical Sciences, Rafsanjan, Iran,Molecular-Medicine Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran,Correspondence: Mehdi Mahmoodi, PhD, Department of Biochemistry, Faculty of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. Tel.: +98-391-5234003-5, +98-913-1914855, Fax: +98-391-5225209, E-mail:
| | - Gh R Asadikaram
- Department of Biochemistry, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Gh H Hassanshahi
- Molecular-Medicine Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - H Khoramdelazad
- Molecular-Medicine Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - M Kazemi Arababadi
- Department of Microbiology, Hematology and Immunology, Rafsanjan University of Medical Sciences, Rafsanjan, Iran,Infectious and Tropical Disease Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
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Faghihloo E, Rezaie F, Salimi V, Naseri M, Mamishi S, Mahmoodi M, Mokhtari-Azad T. Molecular epidemiology of human respiratory syncytial virus in Iran. Acta Virol 2011; 55:81-3. [PMID: 21434709 DOI: 10.4149/av_2011_01_81] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Vatandoost H, Emami S, Oshaghi M, Abai M, Raeisi A, Piazzak N, Mahmoodi M, Akbarzadeh K, Sartipi M. Ecology of malaria vector Anopheles culicifacies in a malarious area of Sistan va Baluchestan province, south-east Islamic Republic of Iran. East Mediterr Health J 2011. [DOI: 10.26719/2011.17.5.439] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Vatandoost H, Emami SN, Oshaghi MA, Abai MR, Raeisi A, Piazzak N, Mahmoodi M, Akbarzadeh K, Sartipi M. Ecology of malaria vector Anopheles culicifacies in a malarious area of Sistan va Baluchestan province, south-east Islamic Republic of Iran. East Mediterr Health J 2011; 17:439-445. [PMID: 21796958] [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
A study was done of the bionomics, insecticide susceptibility and irritability status of Anopheles culicifacies in Sistan va Baluchestan province. Sampling was performed to determine the following parameters: species identification, seasonal activity, adult and larval susceptibility tests, irritability tests, anthropophily index and sporozoite rate. An. culicfacies adults were susceptible to all tested pyrethroid insecticides. An. culicfacies started to appear indoors in late May, showing 2 peaks in June and September. Fenitrothion, cyfluthrin and permethrin had the least irritancy effect and DDT the highest. Only 2/860 females tested were infected with Plasmodium spp. (sporozoite rate: 0.25%). ELISA testing of 250 blood meals derived from night-biting collections of female mosquitoes from humans and cows revealed that only 12.5% were human-fed.
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Affiliation(s)
- H Vatandoost
- Department of Medical Entomology and Vector Control, Tehran University of Medical Sciences, Tehran, Islamic Republic of lran.
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24
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Mahmoodi M, Zijoud SH, Hassanshahi G, Toghroli M, Khaksari M, Hajizadeh M, Mirzajani E. The effects of consumption of raw garlic on serum lipid level, blood sugar and a number of effective hormones on lipid and sugar metabolism in hyperglycemic and/or hyperlipidemic individuals ——Benefit of raw garlic consumption. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/abc.2011.12005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Nosratabadi R, Arababadi MK, Salehabad VA, Shamsizadeh A, Mahmoodi M, Sayadi AR, Kennedy D. Polymorphisms within exon 9 but not intron 8 of the vitamin D receptor are associated with the nephropathic complication of type-2 diabetes. Int J Immunogenet 2010; 37:493-7. [PMID: 20727043 DOI: 10.1111/j.1744-313x.2010.00953.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The impact of several environmental and genetic factors on diabetes and its complications is well documented but there is an urgent need to understand more about genetic risk factors associated with this disease. The present study was aimed at examining the two single nucleotide polymorphisms (SNP) in intron 8 and exon 9 of the vitamin D receptor (VDR) gene in nephropathic and non-nephropathic type-2 diabetic patients. In this clinical study, peripheral blood samples were obtained from 100 type-2 diabetic patients, 100 nephropathic type-2 diabetic patients and 100 healthy controls. DNA was extracted and polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was performed to examine two SNP polymorphisms within the VDR gene. Our results showed a significant difference in the Taq-1 evaluated genotypes of exon 9 in the VDR gene of diabetic individuals with (P=0.012) and without (P ≤ 0.001) nephropathy. Analysis of the Taq-1 evaluated alleles of nephropathic (P=0.917) and non-nephropathic (P=1.000) did not show a significant difference. We also evaluated the intron 8 Apa-1 alleles in patients with (P=0.480) and without nephropathy (P=0.543) and determined there were no differences between these groups. Our results also showed that the frequency of Apa-1 genotypes did not differ in nephropathic (P=0.224) and non-nephropathic (P=0.236) diabetic patients. Based on our results, it can be concluded that VDR and its functional polymorphism in exon 9 may play an important role in pathogenesis of type-2 diabetes and more investigations are required to clarify their role in nephropathy.
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Affiliation(s)
- R Nosratabadi
- Faculty of Medicine, Department of Laboratory Sciences, Islamic Azad University, Zahedan branch, Zahedan, Iran
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26
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Poorolajal J, Mahmoodi M, Majdzadeh R, Fotouhi A. Metaplot: a novel stata graph for assessing heterogeneity at a glance. Iran J Public Health 2010; 39:102-4. [PMID: 23113013 PMCID: PMC3481754] [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: 12/06/2009] [Accepted: 05/10/2010] [Indexed: 11/30/2022]
Abstract
BACKGROUND Heterogeneity is usually a major concern in meta-analysis. Although there are some statistical approaches for assessing variability across studies, here we present a new approach to heterogeneity using "MetaPlot" that investigate the influence of a single study on the overall heterogeneity. METHODS MetaPlot is a two-way (x, y) graph, which can be considered as a complementary graphical approach for testing heterogeneity. This method shows graphically as well as numerically the results of an influence analysis, in which Higgins' I(2) statistic with 95% (Confidence interval) CI are computed omitting one study in each turn and then are plotted against reciprocal of standard error (1/SE) or "precision". In this graph, "1/SE" lies on x axis and "I(2) results" lies on y axe. RESULTS Having a first glance at MetaPlot, one can predict to what extent omission of a single study may influence the overall heterogeneity. The precision on x-axis enables us to distinguish the size of each trial. The graph describes I(2) statistic with 95% CI graphically as well as numerically in one view for prompt comparison. It is possible to implement MetaPlot for meta-analysis of different types of outcome data and summary measures. CONCLUSION This method presents a simple graphical approach to identify an outlier and its effect on overall heterogeneity at a glance. We wish to suggest MetaPlot to Stata experts to prepare its module for the software.
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Affiliation(s)
- J Poorolajal
- Dept. of Epidemiology and Biostatistics, School of Public Health, Hamedan University of Medical Sciences, Iran,Corresponding author: Tel: +98 811 8260661, Fax: +98 8118255301, E-mail: ,
| | - M Mahmoodi
- Dept. of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Iran
| | - R Majdzadeh
- Dept. of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Iran
| | - A Fotouhi
- Dept. of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Iran
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Foroushani AR, Mohammad K, Mahmoodi M, Siassi F. Effect of breastfeeding on cognitive performance in a British birth cohort. East Mediterr Health J 2010; 16:202-208. [PMID: 20799575] [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: 05/29/2023]
Abstract
This cohort study investigated the effect of early life nutrition on later performance in developmental milestones and cognitive tests. Structural equation modelling was carried out on follow-up data from a national birth cohort of 5362 children born in 1 week of 1946 in Britain. Children who were breastfed longer showed earlier developmental milestones. After adjusting for sex, social group and milestones, those children scored higher in verbal tests. Path analysis showed that breastfeeding may have an effect even into adult life. The chain of path coefficients from breastfeeding to developmental milestones at early ages, to cognitive scores at ages 8-15 years, to reading tests at age 26 years and to memory and visual tests at age 43 years were significant in females but not in males.
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Affiliation(s)
- A R Foroushani
- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.
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28
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Foroushani A, Mohammad K, Mahmoodi M, Siassi F. Effect of breastfeeding on cognitive performance in a British birth cohort. East Mediterr Health J 2010. [DOI: 10.26719/2010.16.2.202] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Marvian MN, Behravesh AH, Mahmoodi M, Golzar M. Extrusion Foam Coating of Coaxial Cables using Butane as Physical Blowing Agent. Cellular Polymers 2009. [DOI: 10.1177/026248930902800501] [Citation(s) in RCA: 3] [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: 11/16/2022]
Abstract
This paper presents an experimental study on manufacture and characterization of an insulating foam coating in the coaxial cables where a physical blowing agent (butane) is used. Coaxial cables with foam insulator are widely used in communication industries. The insulating foam plays a key role in the attenuation properties of the coaxial cables. In this research work, an extrusion setup was prepared to produce foam insulated coaxial cable using butane as the physical foaming agent. The effect of die geometry (die gap and die outlet diameter) on foam morphology and loss-attenuation were investigated using a blend of LDPE (90%)-HDPE (10%) as the main material. The results show that an acceptable low loss-attenuation is achievable via using a polyethylene compound and adjusting processing parameters.
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Affiliation(s)
- M. Nazari Marvian
- Department of Mechanical Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran, P.O. Box. 14115-143
| | - A. H. Behravesh
- Department of Mechanical Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran, P.O. Box. 14115-143
| | - M. Mahmoodi
- Department of Mechanical Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran, P.O. Box. 14115-143
| | - M. Golzar
- Department of Mechanical Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran, P.O. Box. 14115-143
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Meysamie A, Sedaghat M, Mahmoodi M, Ghodsi SM, Eftekhar B. Opium use in a rural area of the Islamic Republic of Iran. East Mediterr Health J 2009; 15:425-431. [PMID: 19554990] [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: 05/28/2023]
Abstract
Because of its geographic proximity to the major drug production centres, there is easy access to narcotic drugs in the Islamic Republic of Iran despite efforts by governmental and nongovernmental organizations. Using a structured questionnaire as a basis for conversation, local health workers interviewed 310 residents of a rural area in Babol province about opium use. The self-reported rate of opium use, adjusted due to a bias in the sex ratio of the sample, was 8.9%. All the 42 opium users reported opium use at least 2-3 times per week in the previous 3 months. Opium was smoked by 95.2% and taken orally by 4.8%; there was no injecting use. There was no reported use of other substances, including alcohol. There was a statistically significant relationship between opium use and male sex, unemployment and cigarette smoking.
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Affiliation(s)
- A Meysamie
- Department of Community Medicine, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.
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31
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Meysamie A, Sedaghat M, Mahmoodi M, Ghodsi S, Eftekhar B. Opium use in a rural area of the Islamic Republic of Iran. East Mediterr Health J 2009. [DOI: 10.26719/2009.15.2.425] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Guldner NW, Klapproth P, Enzensberger C, Großherr M, Mahmoodi M, Noel R, Sievers HH. Long-term results of valve equipped experimental biomechanical hearts. Thorac Cardiovasc Surg 2009. [DOI: 10.1055/s-0029-1191682] [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]
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33
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Shariatzad S, Mehranjani MS, Mahmoodi M, Abnosi M, Momeni H, Dezfulian A, Noori M. Effects of Garlic (Allium sativum) on Blood Sugar and Nephropathy in Diabetic Rats. ACTA ACUST UNITED AC 2008. [DOI: 10.3923/jbs.2008.1316.1321] [Citation(s) in RCA: 6] [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: 11/15/2022]
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34
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Doostmohammadian A, Keshavarz A, Dorosty A, Sadrzadeh H, Mahmoodi M. PO20-627 RELATIONSHIP BETWEEN SOME SOCIOECONOMIC AND PERSONAL FACTORS WITH NUTRITIONAL STATUS IN HIGH SCHOOL ADOLESCENTS GIRLS IN SEMNAN, IRAN. ATHEROSCLEROSIS SUPP 2007. [DOI: 10.1016/s1567-5688(07)71637-9] [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: 10/23/2022]
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35
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Hamkar R, Mahmoodi M, Nategh R, Jelyani KN, Eslami MB, Mohktari-Azad T. Distinguishing between primary measles infection and vaccine failure reinfection by IgG avidity assay. East Mediterr Health J 2006; 12:775-82. [PMID: 17333822] [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: 05/14/2023]
Abstract
In this study in the Islamic Republic of Iran 365 measles cases were evaluated to distinguish between primary infection with measles and reinfection due to secondary vaccine failure. All cases previously confirmed by detection of specific IgM were tested for IgG avidity. A secondary immune response was seen in 18.4% of patients. All unvaccinated patients (16.7%) showed a primary immune response. Of 244 patients with documented vaccination, 75.8% showed a primary immune response and 24.2% showed a secondary immune response, thereby indicating a secondary vaccine failure. Almost all measles reinfections (99%) were seen in patients >10 years old, indicating that vaccination for 10-year-old children is recommended.
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Affiliation(s)
- R Hamkar
- School of Public Health, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.
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36
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Mahmoodi M, Islami MR, Asadi Karam GR, Khaksari M, Sahebghadam Lotfi A, Hajizadeh MR, Mirzaee MR. Study of the effects of raw garlic consumption on the level of lipids and other blood biochemical factors in hyperlipidemic individuals. Pak J Pharm Sci 2006; 19:295-8. [PMID: 17105707] [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: 05/12/2023]
Abstract
Hyperlipidemia is one of the famous disorders that can lead to atherosclerosis. Garlic has been considered as one of the blood lipids lowering agents for ages, and various studies have been carried out, some of them confirmed this effect of garlic and some did not. The aim of this study was to evaluate the effect of raw garlic consumption on human blood biochemical factors in hyperlipidemic individuals. This clinical trial was conducted on 30 volunteer individuals with blood cholesterol higher than 245 mg/dl. Fasting blood samples were collected for biochemical tests. The volunteers consumed 5 g raw garlic twice a day for 42 days. Second fasting blood samples were collected and the individuals did not use any kind of garlic for next 42 days. After that, the third fasting blood samples were collected and the biochemical factors were measured. After 42 days of garlic consumption the mean of blood total cholesterol (p<0.001) triglycerides (p<0.01) and FBS (p<0.01) were reduced significantly, but HDL-C was increased (p<0.001) significantly. Following 42 days of no garlic consumption total cholesterol (p<0.001), triglycerides and FBS (p<0.05) were significantly increased and HDL-C (p<0.01) decreased. Garlic consumption alone can decrease serum lipids, but it cannot be used as the main therapeutic agent for hyperlipidemia. Garlic can be used in mild hyperlipidemia or when the patients cannot tolerate the chemical drugs.
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Affiliation(s)
- M Mahmoodi
- Department of Biochemistry, Biophysic and Genetic, Faculty of Medicine, Rafsanjan, Iran.
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37
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Attari A, Dashty S, Mahmoodi M. Post-traumatic stress disorder in children witnessing a public hanging in the Islamic Republic of Iran. East Mediterr Health J 2006; 12:72-80. [PMID: 17037223] [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: 05/12/2023]
Abstract
A study was made of post-traumatic stress disorder in 200 children aged 7-11 years who had witnessed a public hanging next to their school in Isfahan, Islamic Republic of Iran. A standard checklist was completed through interviews with the children's parents 3 months after the event. Post-traumatic stress disorder symptoms were identified in 104 children (52%), with 88 suffering re-experiences, 24 avoidance and 62 hyperarousal. The mean stress severity according to the Child Post-Traumatic Stress Reaction Index was 39.1, indicating a moderate to severe severity of stress. The study highlights the serious emotional effects on children who witness traumatic events.
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Affiliation(s)
- A Attari
- Behavioural Sciences Research Centre, Khorshid Hospital, Isfahan, Islamic Republic of Iran.
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Mahmoodi M, Gardiner JV, Asadi Karam GR, Khaksari M, Murphy KG, Ghatei MA, Bloom SR. Implantation of fibre encapsulated RIN 1056a cells transfected with NPY cDNA into the lateral ventricle of rats alters body weight. ACTA ACUST UNITED AC 2005; 132:80-4. [PMID: 16202459 DOI: 10.1016/j.regpep.2005.09.001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2005] [Accepted: 09/08/2005] [Indexed: 11/26/2022]
Abstract
Neuropeptide Y (NPY) is a hypothalamic neuropeptide thought to play an important role in the regulation of food intake and energy expenditure. Our aim was to over-express bioactive NPY in the lateral ventricle by implanting cells transfected with NPY cDNA. Cells from the RIN 1056a clonal rat islet cell line were transfected with NPY cDNA. Radioimmunoassay, chromatography and receptor binding assays were used to ensure the secreted NPY was bioactive, before and after implantation. NPY cDNA transfected and untransfected control cells were encapsulated in PVDF hollow fibres to prevent tumour formation and implanted into the lateral ventricle of male Wistar rats. The effects on body weight and food intake were measured for 15 days. Animals implanted with NPY cDNA transfected RIN 1056a cells showed a greater rise in body weight than controls. This difference was statistically significant five days after implantation, and remained so until the end of the experiment. Cumulative food intake was also increased in rats implanted with NPY cDNA transfected RIN 1056a cells, but this difference failed to reach statistical significance. We have demonstrated that implantation of NPY over-expressing cells into the lateral hypothalamus of rats increases body weight gain.
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Affiliation(s)
- M Mahmoodi
- Department of Biochemistry, Rafsanjan Faculty of Medicine, Rafsanjan, Iran
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39
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Guldner N, Klapproth P, Mahmoodi M, Geier M, Großherr M, Noel R, Sievers H. Efficacy of biomechanical hearts on a failing myocardium. Thorac Cardiovasc Surg 2005. [DOI: 10.1055/s-2005-922340] [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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Moghaddam AS, Massoud J, Mahmoodi M, Mahvi AH, Periago MV, Artigas P, Fuentes MV, Bargues MD, Mas-Coma S. Human and animal fascioliasis in Mazandaran province, northern Iran. Parasitol Res 2004; 94:61-9. [PMID: 15338292 DOI: 10.1007/s00436-004-1169-6] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.0] [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: 03/12/2004] [Accepted: 05/11/2004] [Indexed: 12/07/2022]
Abstract
The fascioliasis situation in humans and livestock of Iranian Mazandaran is analysed for the first time. Coprological studies showed 7.3% and 25.4% global prevalences in sheep and cattle, respectively. Studies in slaughterhouses indicate that sheep and cattle may be the main reservoir species, buffaloes may play local roles in the transmission, and goats and horses probably only participate sporadically. Morphometric studies by computer image analysis showed that forms intermediate between Fasciola hepatica and F. gigantica appear in addition to both species. A total of 107 infected humans were diagnosed during the 1999-2002 period, which suggests that fascioliasis may be widespread. The absence of differences in human fascioliasis among gender and age groups differs from other human endemic areas. Both human and animal infections show marked differences between western and eastern Mazandaran. Traditions in herbal condiments for human consumption, methods of animal husbandry and annual rainfall may explain the higher prevalences in western Mazandaran.
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Affiliation(s)
- A S Moghaddam
- Department of Medical Parasitology and Medical Mycology, School of Public Health and Institute of Public Health Research, Tehran University of Medical Sciences, P.O. Box 6446, 14155 Tehran, Iran
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Mahmoodi M, Khamesipour A, Dowlati Y, Rafati S, Momeni AZ, Emamjomeh M, Hejazi H, Modabber F. Immune response measured in human volunteers vaccinated with autoclaved Leishmania major vaccine mixed with low dose of BCG. Clin Exp Immunol 2003; 134:303-8. [PMID: 14616791 PMCID: PMC1808866 DOI: 10.1046/j.1365-2249.2003.02299.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [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: 11/20/2022] Open
Abstract
The immune responses induced against Leishmania antigens in volunteers who were vaccinated in a double-blind, randomized field efficacy trial of a preparation of autoclaved Leishmania major (ALM) mixed with a low dose of Bacille Calmette-Guerin vaccine (BCG) who developed either a cutaneous leishmaniasis (CL) lesion due to exposure to infected sandfly bite(s) or did not develop a lesion during the course of the trial were studied and compared with those of non-vaccinated controls. Blood samples were also assayed from different groups including volunteers with history of CL and volunteers with previous positive or negative leishmanin skin test (LST) without a history of CL. The vaccinated volunteers had received a single dose of either ALM mixed with a low dose of BCG or the same dose of BCG alone. The LST and in vitro proliferative response (stimulation index, SI), interferon gamma (IFN-gamma) production and, in a few cases, interleukin (IL)-4 production of peripheral blood mononuclear cells to soluble Leishmania antigens were measured. The results indicated that volunteers who developed CL in the vaccine arm showed a slightly higher SI than cases who received BCG alone. Volunteers with history of CL and volunteers with positive LST demonstrated the strongest proliferation indices and IFN-gamma production. The data suggest that a single dose of ALM + BCG induces a weak Th1 response in vaccinated volunteers that is far lower than that in volunteers with prior subclinical infection or volunteers with history of CL, who are presumed to be immune.
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Affiliation(s)
- M Mahmoodi
- Center for Research and Training in Skin Diseases and Leprosy, Tehran University of Medical Sciences, Tehran, Iran
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Abstract
• Background As costs related to mechanical ventilation increase, clear indicators of patients’ readiness to be weaned are needed. Research has not yet yielded a consensus on physiological variables that are consistent correlates of weaning outcomes. Subjective perceptions rarely have been examined for their contribution to successful weaning.• Objective To explore the subjective perceptions of dyspnea, fatigue, and self-efficacy and selected physiological variables in patients being weaned from mechanical ventilation.• Methods Data were collected prospectively on 68 patients being weaned from mechanical ventilation. Subjective perceptions were measured by using 3 visual analog scales; physiological variables were measured by using the Burns Weaning Assessment Program and a patient profile. Weaning outcomes were recorded 24 hours after data collection.• Results Participants were primarily white women and required mechanical ventilation for a mean of less than 4 days. Participants reported mild dyspnea, moderate fatigue, and high weaning self-efficacy. High Pao2, low Paco2, stable hemodynamic status, adequate cough and swallow reflexes, no metabolic changes, and no abdominal problems were associated with complete weaning (P = .05). Subjective perceptions were associated with physiological variables but not with weaning outcomes.• Conclusions Multidimensional assessment of both primary and secondary indicators of readiness to be weaned is necessary for timely, efficient weaning from mechanical ventilation. Primary assessments include physiological variables related to gas exchange, hemodynamic status, diaphragmatic expansion, and airway clearance. Secondary assessments include perceptions related to key physiological variables. Additional research is needed to determine the predictive value of physiological variables and perceptions of dyspnea, fatigue, and self-efficacy.
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Affiliation(s)
- Renee Twibell
- School of Nursing, Ball State University and Critical Care Division, Ball Memorial Hospital, Muncie, Ind
| | - Debra Siela
- School of Nursing, Ball State University and Critical Care Division, Ball Memorial Hospital, Muncie, Ind
| | - Mahnaz Mahmoodi
- School of Nursing, Ball State University and Critical Care Division, Ball Memorial Hospital, Muncie, Ind
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Twibell R, Siela D, Mahmoodi M. Subjective perceptions and physiological variables during weaning from mechanical ventilation. Am J Crit Care 2003; 12:101-12. [PMID: 12625168] [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: 03/01/2023]
Abstract
BACKGROUND As costs related to mechanical ventilation increase, clear indicators of patients' readiness to be weaned are needed. Research has not yet yielded a consensus on physiological variables that are consistent correlates of weaning outcomes. Subjective perceptions rarely have been examined for their contribution to successful weaning. OBJECTIVE To explore the subjective perceptions of dyspnea, fatigue, and self-efficacy and selected physiological variables in patients being weaned from mechanical ventilation. METHODS Data were collected prospectively on 68 patients being weaned from mechanical ventilation. Subjective perceptions were measured by using 3 visual analog scales; physiological variables were measured by using the Burns Weaning Assessment Program and a patient profile. Weaning outcomes were recorded 24 hours after data collection. RESULTS Participants were primarily white women and required mechanical ventilation for a mean of less than 4 days. Participants reported mild dyspnea, moderate fatigue, and high weaning self-efficacy. High PaO2, low PaCO2, stable hemodynamic status, adequate cough and swallow reflexes, no metabolic changes, and no abdominal problems were associated with complete weaning (P = .05). Subjective perceptions were associated with physiological variables but not with weaning outcomes. CONCLUSIONS Multidimensional assessment of both primary and secondary indicators of readiness to be weaned is necessary for timely, efficient weaning from mechanical ventilation. Primary assessments include physiological variables related to gas exchange, hemodynamic status, diaphragmatic expansion, and airway clearance. Secondary assessments include perceptions related to key physiological variables. Additional research is needed to determine the predictive value of physiological variables and perceptions of dyspnea, fatigue, and self-efficacy.
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Affiliation(s)
- Renee Twibell
- School of Nursing, Ball State University, Critical Care Division, Ball Memorial Hospital, Muncie, Ind., USA
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Hamkar R, Azad TM, Mahmoodi M, Seyedirashti S, Severini A, Nategh R. Prevalence of human papillomavirus in Mazandaran Province, Islamic Republic of Iran. East Mediterr Health J 2002; 8:805-11. [PMID: 15568458] [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: 05/01/2023]
Abstract
We report the prevalence of human papillomavirus (HPV) types in 100 cervical biopsy specimens in Mazandaran province. HPV DNA was detected in 78.6% of cervical carcinoma cases, 64.3% of dys/ metaplasia and 9% of normal cases. Significant correlation was found between the presence of HPV DNA and development of cervical carcinoma. HPV types 16 and 18 were detected in 60.6% of HPV-positive cervical carcinoma cases, whereas HPV31 and 33 were found in 21.2%, and HPV6 and 11 in 18.2%. Among HPV-positive dys/metaplasia cases, 55.6% were positive for HPV16 and 18, 22.3% for HPV6 and 11, and 11.1% for HPV31 and 33. Only HPV6 and 11 were detected in 4 (100%) normal biopsy specimens.
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Affiliation(s)
- R Hamkar
- Division of Virology, Department of Pathobiology, School of Public Health, Institute of Public Health Research, Teheran University of Medical Sciences, Teheran, Islamic Republic of Iran
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Amini S, Solati AA, Fayaz A, Mahmoodi M. Rotavirus infection in children with acute diarrhea in Tehran. Med J Islam Repub Iran 2002; 4:25-8. [PMID: 12319709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
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Abstract
A sensitive and specific radioimmunoassay for orexin A was developed. Orexin A immunoreactivity was found to be confined to the central nervous system (CNS) with the highest concentrations in the hypothalamus, inferior and superior colliculi and brainstem. Within the hypothalamus, the highest levels were found in the lateral and posterior hypothalamus. These regions had a greater orexin A content in females compared to males. The orexin A content of hypothalamic regions did not change with fasting and no difference was noted in hypothalami of rats fed a high fat diet. The hypothalamic orexin A content was not different in obese Zucker rats compared to lean controls. Thus, orexin A has a wide distribution in the CNS, but appetite regulation may not be its main function.
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Affiliation(s)
- S Taheri
- Endocrine Unit, Imperial College School of Medicine, Hammersmith Hospital, London, UK
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Gardiner JV, Mahmoodi M, Bloom SR. Long-term culture of galanin expressing encapsulated RIN 1056a cells in vitro. Transplant Proc 1997; 29:2019-20. [PMID: 9193506 DOI: 10.1016/s0041-1345(97)00211-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- J V Gardiner
- Department of Metabolic Medicine, RPMS, London, United Kingdom
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Owji AA, Gardiner JV, Upton PD, Mahmoodi M, Ghatei MA, Bloom SR, Smith DM. Characterisation and molecular identification of adrenomedullin binding sites in the rat spinal cord: a comparison with calcitonin gene-related peptide receptors. J Neurochem 1996; 67:2172-9. [PMID: 8863528 DOI: 10.1046/j.1471-4159.1996.67052172.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.4] [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: 02/02/2023]
Abstract
Calcitonin gene-related peptide (CGRP) and its receptors are found in mammalian spinal cord. We show, for the first time, binding sites for the novel related peptide adrenomedullin in rat spinal cord microsomes. 125I-Adrenomedullin binding showed high affinity (KD = 0.45 +/- 0.06 nM) and sites were abundant (Bmax = 723 +/- 71 fmol/mg of protein). CGRP, amylin, and calcitonin did not compete at these sites (Ki > 10 microM). High-affinity CGRP binding sites (KD = 0.18 +/- 0.01 nM) were much less numerous (Bmax = 17.7 +/- 2.4 fmol/mg of protein) and showed competition by unlabeled adrenomedullin (Ki = 34.6 +/- 2.4 nM). Chemical cross-linking revealed a major band for 125I-adrenomedullin of M(r) = 84,400 +/- 1,200 and a minor band of M(r) = 122,000 +/- 8,700. 125I-CGRP cross-linking showed bands of lower molecular weight (M(r) = 74,500 +/- 5,000 and 61,000 +/- 2,200). Enzymic deglycosylation of the adrenomedullin binding site showed a considerable carbohydrate content. Neither adrenomedullin nor CGRP was able to increase cyclic AMP in spinal cord. Adrenomedullin mRNA was present in spinal cord, at one-third of its level in lung, and adrenomedullin immunoreactivity was present, at a low concentration (40 fmol/g of tissue). Thus, the presence of abundant binding sites and adrenomedullin mRNA and immunoreactivity anticipate an as yet undefined function for this peptide in spinal cord.
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Affiliation(s)
- A A Owji
- Department of Medicine, Royal Postgraduate Medical School, Hammersmith Hospital, London, England
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Höfig M, Nellessen U, Mahmoodi M, Sievers HH, Leyh R, Maurer I, Bernhard A, Heintzen PH, Simon R. Performance of a stentless xenograft aortic bioprosthesis up to four years after implantation. J Thorac Cardiovasc Surg 1992; 103:1068-73. [PMID: 1597970] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Conventional biologic and mechanical prostheses have important limitations with regard to their hemodynamic characteristics and long-term durability. We evaluated the hemodynamic function of a stentless porcine aortic prosthesis in 10 patients by invasive pressure measurements and angiography with videodensitometry 8 +/- 4 days after operation, as well as by Doppler echocardiography 35 +/- 15 months after valve replacement. The early postoperative invasive study revealed a mean gradient of 8 +/- 6 mm Hg across the prosthesis, no regurgitation in eight patients, and mild regurgitation, defined as less than 20% regurgitant fraction, in the remaining two patients. The late postoperative Doppler echocardiographic study revealed a mean gradient across the aortic prosthesis of 6 +/- 3 mm Hg, mean Doppler-derived valve orifice area of 1.8 +/- 0.6 cm2, and color Doppler flow velocity mapping suggested no regurgitation in eight patients and mild regurgitation in two patients corresponding to early postoperative angiography. None of the 10 patients received anticoagulation therapy. The clinical course of all patients was without incident. This stentless aortic bioprosthesis may offer hemodynamic advantage; however, further studies are needed to allow comparison with conventional mechanical and biologic prostheses.
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Affiliation(s)
- M Höfig
- Division of Cardiology, Christian-Albrechts-Universität, Kiel, Germany
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Sievers HH, Mahmoodi M, Marquardt P, Nellessen U, Höfig M, Angell WW, Bernhard A. Unstented and partial stented bioprostheses for aortic valve replacement--up to 6 years of follow-up. J Card Surg 1991; 6:600-5. [PMID: 1810553 DOI: 10.1111/jocs.1991.6.4s.600] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [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: 12/28/2022]
Abstract
Since January 8, 1985, three different designs of unstented (type A, n = 9) and partial stented (type B, n = 4; and type C, n = 3) glutaraldehyde preserved porcine aortic valves were used for aortic valve replacement in 16 patients with acquired aortic valve lesions. Type A and type B prostheses were implanted using a two suture row technique. In type C prostheses, only a single suture row was necessary for implantation, facilitating surgery considerably. In all patients, the fully flexible commissures of the bioprostheses were secured to the aortic wall of the recipient. There was no hospital mortality. Two patients with type A bioprostheses died due to noncardiac causes, 4 and 24 months postoperatively. One bioprosthesis in this group had to be replaced after 3 months because of insufficiency. Serial Doppler echocardiographic studies were performed up to 6 years after implantation. No significant leaflet calcification was observed. In three type A bioprostheses, a mild insufficiency without progression was recorded. The latest mean/peak transprosthetic pressure gradients were: type A: 6 +/- 4 mmHg/12 +/- 6 mmHg; type B: 6 +/- 3 mmHg/14 +/- 5 mmHg; and type C: 11 +/- 5 mmHg/18 +/- 8 mmHg. The functional results of the type A and type B bioprostheses have proven to be satisfactory. The slightly higher pressure gradients in patients with a type C bioprosthesis give rise to further refinements of its design. These results confirm the usefulness of imitating normal anatomy by using unstented or partial stented bioprostheses.
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Affiliation(s)
- H H Sievers
- Department of Cardiovascular Surgery, University of Kiel, Federal Republic of Germany
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