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Fallahi M, Sarempour M, Mirzadi Gohari A. Potential biodegradation of polycyclic aromatic hydrocarbons (PAHs) and petroleum hydrocarbons by indigenous fungi recovered from crude oil-contaminated soil in Iran. Sci Rep 2023; 13:22153. [PMID: 38092846 PMCID: PMC10719355 DOI: 10.1038/s41598-023-49630-z] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 12/10/2023] [Indexed: 12/17/2023] Open
Abstract
A total of 265 fungal individuals were isolated from soils exposed to heavy oil spills in the Yadavaran oil field in Iran to discover indigenous fungal species with a high potential to biodegrade petroleum hydrocarbon pollutants. Morphological and molecular identification of obtained fungal species led to their assignment into 16 genera and 25 species. Alternaria spp. (78%), Fusarium spp. (5%), and Cladosporium spp. (4%) were the most common genera, along with Penicillium spp., Neocamarosporium spp., Epicoccum sp., Kotlabaea sp., Aspergillus sp., Mortierella sp., and Pleurotus sp. A preliminary screening using the DCPIP indicator revealed that approximately 35% of isolates from Alternaria, Epicoccum, Neocamarosporium, Cladosporium, Fusarium, Stachybotrys, Penicillium, and Stemphylium demonstrated promising tolerance to crude oil. The best-performing isolates (12 fungal individuals) were further investigated for their capacity to mineralize a mixture of four polycyclic aromatic hydrocarbons (PAH) for 47 days, quantified by GC-MS. Eventually, two top-performing isolates, namely 5c-12 (Alternaria tenuissima) and 3b-1 (Epicoccum nigrum), were applied to petroleum-contaminated soil. The GC-MS analysis showed that 60 days after inoculation, these isolates successfully degraded more than 70% of the long-chain hydrocarbons in the soil, including C8-C16 n-alkanes, C36 n-alkane, and Pristane. This study introduces two fungal species (5c-12 and 3b-1) with high potential for biodegrading petroleum compounds and PAHs, offering promising prospects for the decontamination of oil-contaminated soil.
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Affiliation(s)
- Maryam Fallahi
- Department of Plant Pathology, Faculty of Agricultural Sciences and Engineering, College of Agriculture and Natural Resources, University of Tehran, Daneshkadeh Ave., Karaj, Iran
| | - Mohammadsaeed Sarempour
- Environmental Science and Engineering, Islamic Azad University, Tehran North Branch, Tehran, Iran
| | - Amir Mirzadi Gohari
- Department of Plant Pathology, Faculty of Agricultural Sciences and Engineering, College of Agriculture and Natural Resources, University of Tehran, Daneshkadeh Ave., Karaj, Iran.
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Fallahi F, Fallahi M, Brauckmann R, Brandt S, Horstmann J, Wiedemann A. [Complications of the 180 Watt XPS™ GreenLight laser-results of 1283 procedures]. Urologie 2023; 62:376-382. [PMID: 36513771 PMCID: PMC10073166 DOI: 10.1007/s00120-022-01988-0] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 10/24/2022] [Indexed: 04/12/2023]
Abstract
BACKGROUND The aim of this study was to classify and analyze postoperative complications under a new inspection method. This study assessed all patients who presented to the urologic ward within the first 3 months after their surgery. METHODS A total of 170 patients suffered from complications due to the surgery; 29 patients experienced complications that were not directly correlated with the surgery. Age, American Society of Anesthesiologists (ASA) score, the emitted laser energy of the 180 Watt XPS™ GreenLight laser measured in joules, and the complications which led to the renewed hospitalization such as hematuria, urinary retention, and infection were analyzed and compared in the two groups of patients. RESULTS Most complications that occurred were urinary retention and hematuria (50.6% and 49.4% of all patients, respectively). Of the patients with hematuria, 86.75% were under anticoagulant therapy medication. CONCLUSION Compared with the reference approval study (Goliath trial) that included 135 multicentric patients (14.07% of patients presented with a complication classified as Clavien-Dindo II), the rate of complications was similar. This outcome is surprising because the patients treated with the GreenLight laser in the present study were classified as geriatric patients not only according to their age but also in their ASA score which is an indication of multiple other pathologies and administered medications. To achieve long-term postoperative success for these patients, the interface between the ambulatory and the hospital care should be optimized.
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Affiliation(s)
- F Fallahi
- Urologische Klinik, Ev. Krankenhaus Witten gGmbH, Pferdebachstr. 27, 58455, Witten, Deutschland.
- Lehrstuhl für Geriatrie, Lehrstuhl für Urologie, Universität Witten/Herdecke, Witten, Deutschland.
| | - M Fallahi
- Urologische Praxisklinik/Zentrum Euregio Franziskushospital Aachen, Aachen, Deutschland
| | - R Brauckmann
- Chrestos Institut, Concept GmbH & Co. KG, Essen, Deutschland
| | - S Brandt
- Urologische Praxisklinik/Zentrum Euregio Franziskushospital Aachen, Aachen, Deutschland
| | - J Horstmann
- Urologische Praxisklinik/Zentrum Euregio Franziskushospital Aachen, Aachen, Deutschland
| | - A Wiedemann
- Urologische Klinik, Ev. Krankenhaus Witten gGmbH, Pferdebachstr. 27, 58455, Witten, Deutschland
- Lehrstuhl für Geriatrie, Lehrstuhl für Urologie, Universität Witten/Herdecke, Witten, Deutschland
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Fallahi M, Fallahchai R, Abbasnejad T. Communication behaviors and marital functioning among Iranian newlyweds: the effects of the prevention and relationship education program. Curr Psychol 2022. [DOI: 10.1007/s12144-020-00889-9] [Citation(s) in RCA: 1] [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: 11/28/2022]
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Fallahchai R, Fallahi M. Parental stress and dyadic adjustment among parents of children with ASD: Moderating effects of dyadic coping and perceived social support. Res Dev Disabil 2022; 123:104192. [PMID: 35149330 DOI: 10.1016/j.ridd.2022.104192] [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] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 02/02/2022] [Accepted: 02/03/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Previous studies examining the association between child behavior problems and parental stress have reported mixed results. AIM This study aimed to explore the associations between child behavior problems and parental stress as well as parental stress and dyadic adjustment, and the moderating roles of stress communication, perceived partner supportive dyadic coping, and perceived social support in the relationship between parental stress and dyadic adjustment. METHODS AND PROCEDURES Data were derived from 233 parents with at least one child with ASD from Iran. OUTCOMES AND RESULTS The results demonstrated that child behavior problems were positively associated with parental stress whereas parental stress was negatively associated with dyadic adjustment. Furthermore, stress communication, perceived partner supportive dyadic coping, and perceived social support moderated the relationship between parental stress and dyadic adjustment. CONCLUSIONS The current findings may attract the attention of clinicians and professionals who work with parents of children with ASD on the effect of stress and how to manage stress on these parents' dyadic adjustment.
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Affiliation(s)
- Reza Fallahchai
- Department of Psychology, University of Hormozgan, P.O. Box 3995, Bandar Abbas, Iran.
| | - Maryam Fallahi
- Department of Psychology, University of Hormozgan, P.O. Box 3995, Bandar Abbas, Iran.
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Fallahi M, Somma S, Javan-Nikkhah M, Saremi H, Stea G, Masiello M, Logrieco AF, Moretti A. Genetic structure of Fusarium verticillioides populations from maize in Iran. Fungal Genet Biol 2021; 156:103613. [PMID: 34332072 DOI: 10.1016/j.fgb.2021.103613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 07/19/2021] [Accepted: 07/22/2021] [Indexed: 10/20/2022]
Abstract
Fusarium verticillioides is one of the most important fungal pathogens of maize since it causes severe yield losses and produces the mycotoxins fumonisins that represent a major concern for human and animal health. Information about genetic diversity and population structure of fungal pathogens is essential for developing disease management strategies. The aim of this research was to investigate the genetic structure of F. verticillioides isolated from different provinces of Iran through determination of mating type idiomorphs, phylogenetic analyses based on translation elongation factor-1 alpha (EF-1α), RNA Polymerase II Subunit (RPB2), beta-tubulin (tub2) and Calmodulin (cmdA) genes and genetic diversity analyses based on 6 simple-sequence repeats (SSRs). Both mating types were detected in Iranian populations of F. verticillioides, particularly in Qazvin and Khuzestan, with equal frequency, which highlighted that sexual reproduction is favorable under field conditions. However, the linkage disequilibrium indices did not support the hypothesis of random mating in Khuzestan and Fars. Although assessment of nucleotide diversity based on housekeeping genes showed low level of variation among strains, genotype diversity based on SSRs revealed a high level of genetic diversity within Iranian populations. AMOVA analysis highlighted that the genetic variation of F. verticillioides in Iran was mainly distributed within population of a single area (97%), while a small proportion of genetic variation (3%) resided among populations. These patterns of variation are likely explained by the continuous gene flow among populations isolated from different areas. On the other hand, principal coordinate analysis indicated that the distribution of genetic variation among populations could be explained by the geographical distances. Consequently, to reduce pathogen gene flow among regions, the quarantine processes in Iran should be intensified.
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Affiliation(s)
- Maryam Fallahi
- Department of Plant Protection, Faculty of Agricultural Science and Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj 77871-31587, Iran.
| | - Stefania Somma
- Institute of Sciences of Food Production, National Research Council (ISPA-CNR), via Amendola 122/O, 70126 Bari, Italy.
| | - Mohammad Javan-Nikkhah
- Department of Plant Protection, Faculty of Agricultural Science and Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj 77871-31587, Iran.
| | - Hossein Saremi
- Department of Plant Protection, Faculty of Agricultural Science and Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj 77871-31587, Iran.
| | - Gaetano Stea
- Institute of Sciences of Food Production, National Research Council (ISPA-CNR), via Amendola 122/O, 70126 Bari, Italy; Institute for Biomedical Technologies, National Research Council (ITB-CNR), via Amendola 122/O, 70126 Bari, Italy(2).
| | - Mario Masiello
- Institute of Sciences of Food Production, National Research Council (ISPA-CNR), via Amendola 122/O, 70126 Bari, Italy.
| | - Antonio F Logrieco
- Institute of Sciences of Food Production, National Research Council (ISPA-CNR), via Amendola 122/O, 70126 Bari, Italy.
| | - Antonio Moretti
- Institute of Sciences of Food Production, National Research Council (ISPA-CNR), via Amendola 122/O, 70126 Bari, Italy.
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Fallahchai R, Fallahi M, Badiee M. Two-Year Follow-Up of the Efficacy of the PREP Training on Iranian Newlyweds. J Marital Fam Ther 2021; 47:183-195. [PMID: 32706168 DOI: 10.1111/jmft.12444] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The aim of the present study was to replicate the efficacy of the Prevention and Relationship Education Program (PREP) training on marital satisfaction and dyadic adjustment among a group of Iranian newlyweds. One hundred and sixty heterosexual couples (N = 320 participants) were randomly assigned to an experimental or a wait list control group. Data from one hundred and forty-eight couples were analyzed. Participants completed the ENRICH Marital Satisfaction Scale (The Family Journal, 1, 1993, 196-207) and Dyadic Adjustment Scale (The Journal of Sex Research, 39, 1976, 190-196) at pretest, posttest, 1-year follow-up, and 2-year follow-up. Results indicated that mean marital satisfaction and dyadic adjustment scores between the experimental and control groups were significantly different at posttest. Therefore, PREP training improved marital satisfaction and dyadic adjustment of couples at posttest. The data suggests that PREP training program can be introduced as an effective relationship education program for Iranian newlyweds.
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Fallahi M, Horstmann J, Ting O, Roth S, Brandt AS. Praktische intraoperative Hämostase bei offener Adenomenukleation der Prostata. Aktuelle Urol 2020; 51:239-240. [PMID: 32485770 DOI: 10.1055/a-1125-9043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- M. Fallahi
- Urologisches Zentrum Euregio, Aachen I, Praxisklinik am Franziskushospital, Sanatoriumstraße 10, D-52064 Aachen, Deutschland
- Lehrstuhl für Urologie der Universität Witten/Herdecke, Witten/Herdecke, Deutschland
- Zentrum für Forschung in der klinischen Medizin (ZFKM) Wuppertal, Wuppertal, Deutschland
| | - J. Horstmann
- Urologisches Zentrum Euregio, Aachen I, Praxisklinik am Franziskushospital, Sanatoriumstraße 10, D-52064 Aachen, Deutschland
| | - O. Ting
- Urologisches Zentrum Euregio, Aachen I, Praxisklinik am Franziskushospital, Sanatoriumstraße 10, D-52064 Aachen, Deutschland
| | - S. Roth
- Klinik für Urologie und Kinderurologie, Helios Universitätsklinikum Wuppertal, Heusnerstraße 40, 42285, Wuppertal, Deutschland
- Zentrum für Forschung in der klinischen Medizin (ZFKM) Wuppertal, Wuppertal, Deutschland
| | - A. S. Brandt
- Urologisches Zentrum Euregio, Aachen I, Praxisklinik am Franziskushospital, Sanatoriumstraße 10, D-52064 Aachen, Deutschland
- Zentrum für Forschung in der klinischen Medizin (ZFKM) Wuppertal, Wuppertal, Deutschland
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Fallahi M, Ahmadi E, Mohamadnia Z. Effect of inorganic oxide supports on the activity of chromium‐based catalysts in ethylene trimerization. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4975] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Maryam Fallahi
- Department of ChemistryUniversity of Zanjan PO Box 45195‐313 Zanjan Iran
| | - Ebrahim Ahmadi
- Department of ChemistryUniversity of Zanjan PO Box 45195‐313 Zanjan Iran
| | - Zahra Mohamadnia
- Department of ChemistryInstitute for Advanced Studies in Basic Sciences (IASBS) Zanjan 45137‐66731 Iran
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Fallahchai R, Fallahi M, Randall AK. A Dyadic Approach to Understanding Associations Between Job Stress, Marital Quality, and Dyadic Coping for Dual-Career Couples in Iran. Front Psychol 2019; 10:487. [PMID: 31057447 PMCID: PMC6482167 DOI: 10.3389/fpsyg.2019.00487] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 02/19/2019] [Indexed: 11/23/2022] Open
Abstract
In Iran, dual-career couples face many stressors due to their demands of balancing work and family. Moreover, the experience of this stress can negatively affect partners' martial quality. Recent studies have shown the positive impact of dyadic coping on well-being; however, a majority of this research has been conducted with Western cultures. As such, there is a dearth of literature on understanding how supportive and common dyadic coping may have a positive association with work-family stress for couples in Iran. Using a sample of 206 heterosexual dual-career couples from Iran, this study examines the associations between job stress and marital quality, and possible moderating effects of common and perceived partner supportive dyadic coping. As predicted, job stress was negatively associated with marital quality, and this association with further moderated by gender, such that women who experienced greater job stress also reported lower marital quality. Additionally, dyadic coping moderated the association between job stress and marital quality. Common dyadic coping attenuated the negative association between job stress and marital quality. The findings shed light on the possible beneficial effects of teaching supportive and common dyadic coping techniques to dual-career couples in Iran.
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Affiliation(s)
- Reza Fallahchai
- Department of Psychology, University of Hormozgan, Bandar Abbas, Iran
| | - Maryam Fallahi
- Department of Psychology, University of Hormozgan, Bandar Abbas, Iran
| | - Ashley K. Randall
- Counseling and Counseling Psychology, Arizona State University, Tempe, AZ, United States
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Chodari L, Smailnejad S, Fallahi M, Khalaji N, Ghorbanzadeh V. OXIDATIVE STRESS IS MARKEDLY REDUCED BY COMBINED VOLUNTARY EXERCISE AND TESTOSTERONE IN THE HEART OF DIABETIC RATS. Acta Endocrinol (Buchar) 2019; 15:173-181. [PMID: 31508173 DOI: 10.4183/aeb.2019.173] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Objective Cardiovascular disorders in diabetes condition arise from increased oxidative stress. Both regular mild exercise and testosterone influence on body's antioxidant system in diabetes. In this study, we evaluated treatment of testosterone and voluntary exercise, alone or together on oxidative stress in the heart and blood of diabetic rats. Methods Type 1 diabetes was induced by intraperitoneal injection of 50 mg/kg of streptozotocin in rats. Sixty three rats have been divided into eight groups as follows: Diabetes, diabetes+ testosterone, diabetes+ exercise, diabetes+ testosterone+ exercise, diabetes+ castration, diabetes+ castration+ testosterone, Diabetes+ castration+ exercise, Diabetes+ castration+ exercise+ testosterone. Type 1 diabetes was induced by intraperitoneal injection of 50 mg/kg of streptozotocin in the male Wistar rats and after a week, castration was performed. After 42 days of treatment with testosterone (2 mg/kg/day) or voluntary exercise alone or in combination, SOD, GPX and CAT activities and MDA levels were measured in the blood and heart tissue samples in the groups of study. In the end of study, SOD, GPX and CAT activities and MDA levels were measured in blood and heart tissue samples in the groups of study. Results SOD, GPX and CAT activities significantly (p<0.05) increased in groups that treated either testosterone or exercise and MDA level significantly (p<0.01) decreased in the blood and heart tissue of diabetic and castrated diabetic rats. Simultaneously, treatment with testosterone and exercise had a synergistic effect on antioxidant enzymes level in diabetic and diabetic castrated rats. In the castrated animals with diabetes, SOD, GPX and CAT activities significantly decreased (p<0.05) and MDA levels significantly increased (p<0.05) in blood and heart tissue. Conclusion Voluntary exercise and testosterone alone or together heightened body's antioxidant system and were able to reduce the MDA levels in blood and heart of diabetic and castrated diabetic rats.
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Affiliation(s)
- L Chodari
- Department of Physiology, Urmia University of Medical Sciences, Urmia, Iran.,Neurophysiology Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - S Smailnejad
- Department of Physiology, Urmia University of Medical Sciences, Urmia, Iran
| | - M Fallahi
- Drug Applied Research Center of Tabriz, Urmia, Iran
| | - N Khalaji
- Department of Physiology, Urmia University of Medical Sciences, Urmia, Iran
| | - V Ghorbanzadeh
- Drug Applied Research Center of Tabriz, Urmia, Iran.,Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
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Fallahi M, Zareinejad M, Baghestan K, Tivay A, Rezaei SM, Abdullah A. Precise position control of an electro-hydraulic servo system via robust linear approximation. ISA Trans 2018; 80:503-512. [PMID: 29891087 DOI: 10.1016/j.isatra.2018.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 05/16/2018] [Accepted: 06/01/2018] [Indexed: 06/08/2023]
Abstract
This paper presents a study on electro-hydraulic servo system for the purpose of position control using a compatible linear model. The system has high level of nonlinearity and linearization introduces extra error in system model. In order to reduce this error several methods of linearization uncertainty are discussed. In spite of applying Taylor's series for all methods, several procedures are used for considering uncertainty on linearization constants. In the first procedure, a simple bound is considered for each linearization constant. In the second procedure, a polytope is extracted for the uncertainty by a graphical method. Finally, a procedure with less conservativeness and less restriction is proposed. This procedure is used to extract the linear model of the electro-hydraulic servo system for the task of position control. The resulting model is used to synthesize an output-feedback H∞ controller for the EHSS using a Linear Matrix Inequality (LMI)-based approach. The effectiveness of the proposed method is demonstrated by simulation and experimental results. The results showed that the procedure is less conservative and has the fastest operation without any overshoot.
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Affiliation(s)
- M Fallahi
- Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran.
| | - M Zareinejad
- New Technologies Research Center, Amirkabir University of Technology, Tehran, Iran.
| | - K Baghestan
- Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran.
| | - A Tivay
- Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran.
| | - S M Rezaei
- Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran.
| | - A Abdullah
- Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran.
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Kessing C, Nixon C, Li C, Tsai P, Takata H, Mousseau G, Ho P, Honeycutt J, Fallahi M, Trautmann L, Garcia J, Valente S. In vivo suppression of HIV rebound by didehydro-Cortistatin A, a ‘block-and-lock’ strategy for HIV-1 cure. J Virus Erad 2017. [DOI: 10.1016/s2055-6640(20)30560-4] [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: 11/25/2022] Open
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Fallahi M, Ahmadi E, Ramazani A, Mohamadnia Z. Trimerization of ethylene catalyzed by Cr-based catalyst immobilized on the supported ionic liquid phase. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.07.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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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Fallahchai R, Fallahi M, Ritchie LL. The Impact of PREP Training on Marital Conflicts Reduction: A Randomized Controlled Trial With Iranian Distressed Couples. Journal of Couple & Relationship Therapy 2016. [DOI: 10.1080/15332691.2016.1238793] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | | | - Lane L. Ritchie
- Department of Psychology, University of Denver, Denver, Colorado, USA
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Aslani MR, Keyhanmanesh R, Khamaneh AM, Abbasi MM, Fallahi M, Alipour MR. Tracheal overexpression of IL-1β, IRAK-1 and TRAF-6 mRNA in obese-asthmatic male Wistar rats. Iran J Basic Med Sci 2016; 19:350-7. [PMID: 27279977 PMCID: PMC4887706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Human and animal studies have shown a close relationship between obesity and asthma severity. Here, we examined the effects of diet-induced obesity (DIO) on the expression levels of IL-1β, IRAK-1 and TRAF-6 mRNA in male Wistar rats tracheal after sensitization with ovalbumin (OVA). MATERIALS AND METHODS Twenty male Wistar rats divided to four groups, included, control group with normal diet (C+ND), OVA-sensitized group with normal diet (S+ND), control group with high-fat diet (C+HFD), and OVA-sensitized group with high-fat diet (S+HFD). All animals fed for 8 weeks with standard pelts or high-fat diet, and then were sensitized and challenged with OVA or saline for another 4 weeks with designed regimens. At the end of study, trachea isolated and examined for expression levels of IL-1β, IRAK-1 and TRAF-6 mRNA with RT-PCR method. RESULTS Diet-induced obesity groups developed increased weight, obesity indexes and lipid profiles (P<0.05 to P<0.001). The expression levels of IL-1β mRNA in OVA-sensitization groups (S+ND and S+HFD) showed a significantly increased when compared with control group. Also in S+HFD group, expression level of TRAF-6 mRNA was higher than other groups (P<0.001). IRAK-1 expression level was high in S+HFD compared with control group.IL-1β and TRAF-6 mRNA correlated positively with obesity indexes. CONCLUSION The results showed that DIO causes overexpression of IL-1β, IRAK-1 and TRAF-6 mRNA in an experimental model of asthma. Our results suggested that in obese-asthmatic conditions locally production and activation of pro-inflammatory agents can be increased. These findings showed that possible mechanism for obesity-asthma relationships.
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Affiliation(s)
- Mohammad Reza Aslani
- Tuberculosis and Lung Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Rana Keyhanmanesh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Mehdi Khamaneh
- School of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Maryam Fallahi
- Department of Physiology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Reza Alipour
- Tuberculosis and Lung Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran,Corresponding author: Mohammad Reza Alipour. Tuberculosis and Lung Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. Tel/Fax: +98-413-3364664; ;
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Ebrahimi H, Fallahi M, Khamaneh AM, Ebrahimi Saadatlou MA, Saadat S, Keyhanmanesh R. Effect of α-Hederin on IL-2 and IL-17 mRNA and miRNA-133a Levels in Lungs of Ovalbumin-Sensitized Male Rats. Drug Dev Res 2016; 77:87-93. [PMID: 26865286 DOI: 10.1002/ddr.21292] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 01/10/2016] [Indexed: 11/06/2022]
Abstract
α-hederin, a saponin that is a major constituent of English Ivy (Hedera helix) is effective in the treatment of asthma. In the present study, the effect of α-hederin on lung tissue pathology and the levels of the inflammatory mediators; IL-2 mRNA, IL-17 mRNA, and MicroRNAs (miRNA)-133a was evaluated in a rat ovalbumin (OVA)-sensitized model of asthma. Rats were divided randomly into control (C), OVA-sensitized (S), OVA-sensitized pretreated with the antioxidant, thymoquinone (3 mg/kg, S + TQ) or OVA-sensitized pretreated with α-hederin (0.02 mg/kg, S + AH) groups. Levels of IL-2 and IL-17 mRNA were higher in the OVA-sensitized group than controls while the level of miRNA-133a gene expression was lower. IL-2 mRNA and miRNA-133a gene expression in the S + TQ group was higher than in the control and OVA-sensitized groups while the level of IL-17 mRNA in the S + TQ group was lower than in the OVA-sensitized group. Pretreatment with α-hederin decreased IL-17 mRNA levels and increased miRNA-133a gene expression compared with OVA-sensitized animals. All pathological changes in pretreated groups were lower than the OVA-sensitized group. These results showed a beneficial effect of α-hederin in OVA-sensitized rats, suggesting that α-hederin affects the IL-2 and IL-17 secretion pathways, altering miRNA-133a expression.
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Affiliation(s)
- Hadi Ebrahimi
- Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Fallahi
- Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Mahdi Khamaneh
- Department of Molecular Medicine, School of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Saeideh Saadat
- Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Physiology, Faculty of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Rana Keyhanmanesh
- Tuberculosis and Lung Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Fallahi M, Keyhanmanesh R, Khamaneh AM, Ebrahimi Saadatlou MA, Saadat S, Ebrahimi H. Effect of Alpha-Hederin, the active constituent of Nigella sativa, on miRNA-126, IL-13 mRNA levels and inflammation of lungs in ovalbumin-sensitized male rats. Avicenna J Phytomed 2016; 6:77-85. [PMID: 27247924 PMCID: PMC4884220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVE In previous studies the therapeutic effects of Nigella sativa have been demonstrated on asthmatic animals. In the present study, the preventive effect of single dose of alpha-hederin, its active constituent, has been evaluated on lung inflammation and some inflammatory mediators in lungs of ovalbumin sensitized rat in order to elicit its mechanism. MATERIALS AND METHODS Forty rats were randomly grouped in 4 groups; control (C), sensitized (S), sensitized pretreated groups with thymoquinone (3 mg/kg i.p., S+TQ) and alpha-hederin (0.02 mg/kg i.p., S+AH). Levels of IL-13 mRNA and miRNA-126 in lung tissue and its pathological changes in each group were assessed. RESULTS Elevated levels of miRNA-126, IL-13 mRNA and pathological changes were observed in the sensitized group compared to the control group (p<0.001 to p<0.05). All of these factors were significantly reduced in S+TQ and S+AH groups in comparison to S group (p<0.001 to p<0.05). Although alpha-hederin decreased the levels of miRNA-126, IL-13 mRNA and pathological changes in comparison with thymoquinone, the results were statistically not significant. CONCLUSION The results suggested that alpha-hederin had preventive effect on sensitized rats like thymoquinone. It may intervene in miRNA-126 expression, which consequently could interfere with IL-13 secretion pathway leading to a reduction in inflammatory responses.
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Affiliation(s)
- Maryam Fallahi
- Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Rana Keyhanmanesh
- Medical Education Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Mahdi Khamaneh
- Department of molecular medicine, School of advanced medical sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Saeideh Saadat
- Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran,Department of Physiology, Faculty of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Hadi Ebrahimi
- Tuberculosis and lung diseases research center, Tabriz University of Medical Sciences, Tabriz, Iran,Corresponding Author: Tel: 041-33364664, Fax: 041-33364664,
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Keyhanmanesh R, Saadat S, Mohammadi M, Shahbazfar AA, Fallahi M. The Protective Effect of α-Hederin, the Active Constituent of Nigella sativa, on Lung Inflammation and Blood Cytokines in Ovalbumin Sensitized Guinea Pigs. Phytother Res 2015; 29:1761-7. [PMID: 26292851 DOI: 10.1002/ptr.5429] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 07/16/2015] [Accepted: 07/17/2015] [Indexed: 12/23/2022]
Abstract
In the present study, the preventive effect of two different concentrations of α-hederin, the active constituent of Nigella sativa, on lung inflammation and blood cytokines in ovalbumin sensitized guinea pigs was examined. Forty eight male adult guinea pigs were divided into control (C), sensitized (S) and sensitized pretreated groups; with thymoquinone (S+TQ), low dose (S+LAH) and high dose of α-hederin (S+HAH) and inhaled fluticasone propionate (S+FP). The lung histopathology and blood levels of IL-4, IFN-γ and IL-17 were assessed. Compared to sensitized animals, all pathological changes improved significantly in pretreated groups (p < 0.001 to p < 0.05). These improvements in α-hederin pretreated groups were similar to S+TQ and S+FP groups except cellular infiltration in S+LAH and S+HAH groups which was lower than S+TQ group (p < 0.05). The blood IL-4 and IL-17 levels in S+HAH groups showed a significant decrease compared to S group (p < 0.05) which were similar to S+TQ and S+FP groups. The level of IFN-γ in S+LAH and S+HAH groups increased significantly compared to S group (p < 0.05) which was higher than S+FP group (p < 0.05). Blood IL-4 in S+HAH group was significantly lower than S+LAH group (p < 0.05). In conclusion, α-hederin could attenuate the lung inflammation and improve the changes of cytokines like thymoquinone and fluticasone in used dosages.
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Affiliation(s)
- Rana Keyhanmanesh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeideh Saadat
- Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Physiology, Faculty of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mostafa Mohammadi
- Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir-Ali Shahbazfar
- Department of pathology, Faculty of veterinary medicine, University of Tabriz, Tabriz, Iran
| | - Maryam Fallahi
- Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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Khalesi N, Shariat M, Fallahi M, Rostamian G. Evaluation of risk factors for retinopathy in preterm infant: a case-control study in a referral hospital in Iran. Minerva Pediatr 2015; 67:231-237. [PMID: 25941129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM Aim of the study was to detect possible risk factors for retinopathy of prematurity (ROP), as a leading cause of treatable childhood blindness, among premature neonates. METHODS In this retrospective study, 60 premature neonates with ROP and 60 premature infants without ROP were entered and compared. Variables such as gestational age, birth weight, oxygen therapy, phototherapy, and so on were gathered and compared between the two groups. RESULTS Significant statistical differences were seen regarding gestational age (29.3±3.1 weeks in the ROP group vs. 31.9±2.2 in control group) and first-minute apgar score (6.55±1.7 in the ROP group vs. 7.06±2.3 in the control group). Regarding comparisons made in terms of therapeutic interventions made, only oxygen therapy and phototherapy showed significant differences between the two groups which were higher in the ROP group. CONCLUSION Gestational age (lower in the ROP group), first-minute Apgar score (lower mean score in the ROP group), birth weight, phototherapy, and oxygen therapy were factors discovered to affect the occurrence of ROP among premature infants. Higher birth weight and more advanced gestational age were protective factors for ROP. Oxygen therapy and multiple birth are ROP risk factors and these can be used for prediction of ROP occurrence.
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Affiliation(s)
- N Khalesi
- Neonatal Division Aliasghar Hospital, Iran University of Medical Sciences, Tehran, Iran -
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Saadat S, Mohammadi M, Fallahi M, keyhanmanesh R, Aslani MR. The protective effect of α-hederin, the active constituent of Nigella sativa, on tracheal responsiveness and lung inflammation in ovalbumin-sensitized guinea pigs. J Physiol Sci 2015; 65:285-92. [PMID: 25752254 PMCID: PMC10717629 DOI: 10.1007/s12576-015-0367-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 02/13/2015] [Indexed: 10/23/2022]
Abstract
Many investigations have demonstrated the prophylactic effect of Nigella sativa on asthma disease. One of its active constituents is α-hederin. In the present study, the preventive effect of two different concentrations of α-hederin on tracheal responsiveness and lung inflammation in ovalbumin-sensitized guinea pigs was examined. Forty male adult Dunkin-Hartley guinea pigs were randomly divided into the control (C), sensitized (S) and sensitized pretreated groups with thymoquinone (3 mg/kg i.p., S + TQ), low-dose α-hederin (0.3 mg/kg i.p., S + LAH) and high-dose α-hederin (3 mg/kg i.p., S + HAH). The responsiveness of tracheal smooth muscle (TR) to methacholine, histamine and ovalbumin was assessed. Moreover, total and differential white blood cell counts in lung lavage fluid were examined. Compared with the S group, the mean EC50 value in the S + LAH group increased significantly (p < 0.05). The mean EC50 value of histamine contraction in the S + LAH and S + HAH groups was significantly higher than in the S group (p < 0.05). In all pretreated groups, the TR to ovalbumin decreased in comparison to the S group (p < 0.001). Both the S + HAH and S + LAH groups showed significantly decreased TR compared to the S + TQ group (p < 0.01-p < 0.01). Total WBC and eosinophil counts in all pretreated groups decreased significantly in comparison with the S group (0.001-0.01). There was a significant increase in neutrophil, lymphocyte and monocyte counts in the pretreated groups compared to the S group (p < 0.001-p < 0.05). The basophil count in the S + TQ and S + HAH groups was significantly lower than in the S group (p < 0.01-p < 0.05). This study suggested that α-hederin has anti-inflammatory and bronchodilatory effects like thymoquinone.
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Affiliation(s)
- Saeideh Saadat
- Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Physiology, Faculty of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mostafa Mohammadi
- Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Fallahi
- Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Rana keyhanmanesh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Reza Aslani
- Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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Watanabe K, Fallahi M, Dai X. Chromatin effector Pygo2 regulates mammary tumor initiation and heterogeneity in MMTV-Wnt1 mice. Oncogene 2013; 33:632-42. [PMID: 23334328 PMCID: PMC3913260 DOI: 10.1038/onc.2012.620] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Revised: 11/20/2012] [Accepted: 11/24/2012] [Indexed: 12/12/2022]
Abstract
Little is known about chromatin mechanisms that regulate tumor-initiating cells that are proposed to be responsible for tumor recurrence and relapse. We have previously shown that Pygopus 2 (Pygo2), a chromatin effector and context-dependent Wnt signaling co-activator, regulates mammary gland development by expanding epithelial stem/progenitor cells. However, the role of Pygo2 in mammary tumorigenesis in vivo remains to be addressed. In this study, we show that epithelia-specific ablation of Pygo2 in MMTV-Wnt1 transgenic mice results in delayed mammary ductal elongation, but the hyperbranching phenotype, aberrant accumulation of stem/progenitor-like cells, and canonical Wnt signaling output are largely unaffected. Chronic loss of Pygo2 significantly delays mammary tumor onset in MMTV-Wnt1 females, whereas acute deletion of Pygo2 in MMTV-Wnt1 tumor cells leads to a significant decrease in their tumor initiating capability upon transplantation. Finally, we provide evidence supporting a role for Pygo2 in modulating the lineage potential of MMTV-Wnt1 tumor initiating cells. Collectively, our results suggest that Pygo2 acts at a step downstream of mammary stem cell accumulation to facilitate transformation, and that it regulates the tumor initiating capacity and lineage preference of the already transformed mammary cells, in MMTV-Wnt1 mice. These findings offer valuable insights into our understanding of the molecular basis of heterogeneity within breast tumors.
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Affiliation(s)
- K Watanabe
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, CA, USA
| | - M Fallahi
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, CA, USA
| | - X Dai
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, CA, USA
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Kaboudin B, Emadi S, Faghihi MR, Fallahi M, Sheikh-Hasani V. Synthesis of α-oxycarbanilinophosphonates and their anticholinesterase activities: the most potent derivative is bound to the peripheral site of acetylcholinesterase. J Enzyme Inhib Med Chem 2012; 28:576-82. [DOI: 10.3109/14756366.2012.663362] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - Saeed Emadi
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS),
Gava Zang, Zanjan, Iran
| | | | | | - Vahid Sheikh-Hasani
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS),
Gava Zang, Zanjan, Iran
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24
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Greenlee C, Luo J, Leedy K, Bayraktaroglu B, Norwood RA, Fallahi M, Jen AKY, Peyghambarian N. Electro-optic polymer spatial light modulator based on a Fabry-Perot interferometer configuration. Opt Express 2011; 19:12750-12758. [PMID: 21716517 DOI: 10.1364/oe.19.012750] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A spatial light modulator (SLM) based on a Fabry-Perot interferometer configuration has been fabricated and tested. The Fabry-Perot spacer layer is a thin film of the SEO100 electro-optic polymer which serves as the nonlinear medium. Measurement results demonstrate the modulation of multiple pixels operating simultaneously at frequencies ranging from 300 kHz to 800 kHz which is significantly faster than SLMs based on liquid crystal and digital micromirror device technology. An average modulation contrast of 50% for all pixels is achieved with a drive voltage of 70 V(rms) at 100 kHz. Microwave speeds and CMOS compatibility are feasible with improved transmission line and cavity design.
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Affiliation(s)
- Charles Greenlee
- College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA.
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25
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Ghassempour A, Najafi NM, Mehdinia A, Davarani SSH, Fallahi M, Nakhshab M. Analysis of anatoxin-a using polyaniline as a sorbent in solid-phase microextraction coupled to gas chromatography–mass spectrometry. J Chromatogr A 2005; 1078:120-7. [PMID: 16007989 DOI: 10.1016/j.chroma.2005.04.053] [Citation(s) in RCA: 57] [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] [Indexed: 11/28/2022]
Abstract
A simple and sensitive method for determining anatoxin-a in aqueous samples was developed using solid-phase microextraction (SPME) and gas chromatography with mass spectrometry (GC-MS) detection. Three forms of polyaniline (PANI) films and a single form of polypyrrole (PPY) film were prepared and applied for SPME. The extraction properties of these films to anatoxin-a were examined and it was shown that leucoemeraldine form of PANI displayed a better selectivity to this compound. SPME conditions were optimized by selecting the appropriate extraction parameters, including type of coating (leucoemeraldine form of PANI at 32 microm thicknesses), salt concentration (10%, w/v), time of extraction (30 min) and stirring rate (1000 rpm). The calibration curve was linear in the range from 50 to 10,000 ng/ml, with the detection limit (S/N = 3) of 11.2 ng/ml. This method was successfully applied for the analysis of anatoxin-a in the cultured media of two species of cyanobacteria.
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Affiliation(s)
- Alireza Ghassempour
- Department of Phytochemistry, Medicin Plant Institute, Shahid Beheshti University, P.O. Box 19835-389, Tehran, Iran.
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26
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Ubrig B, Renner K, Fallahi M, Roth S. [Are there indications for organ-preserving tumor resection in urothelial cancers of the upper urinary tract?]. Aktuelle Urol 2005; 36:136-41. [PMID: 15902574 DOI: 10.1055/s-2004-830277] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE Identification of prognostic factors for tumor recurrence in nephronsparing surgery and tumor progression after organ-preserving surgery. MATERIAL AND METHODS From June 1989 to February 2003, 43 patients (47 nephron units) underwent organ-preserving surgery or the upper urinary tract because of urothelial carcinoma, with 26 (60.5 %) having an elective indication (healthy contralateral kidney). RESULTS The mean follow-up was 39.2 months with a range of 10.6 to 168.3 months. Ipsilateral recurrences occurred in 13 (27.6 %) of reno-ureteral units. Recurrences were significantly more common for tumors located in the renal pelvis or opposite the ureteral origin (p = 0.018). Tumor progression occurred in 8 of 43 patients (18.6 %) and significantly correlated with the T- and G-stage of the primary tumor (p = 0.006 and p = 0.002). Of the 47 conservatively treated reno-ureteral units, 38 (80.8 %) could be preserved. CONCLUSION Organ-preserving resection of the urothelial carcinoma of the upper urinary tract is an alternative in some patients with well-differentiated superficial tumors. A follow-up for life and a good patient compliance are necessary. Tumors of the renal pelvis have a significantly higher recurrence rate than ureteral tumors. Poorly differentiated tumors should undergo organ-preserving surgery only if the goal is palliation and in patients with solitary kidney after intensive consultation about the high risk of invasive recurrences and the development of metastases.
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Affiliation(s)
- B Ubrig
- Klinik für Urologie und Kinderurologie, Univ. Witten/Herdecke, HELIOS-Klinikum Wuppertal.
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Albers P, Siener R, Härtlein M, Fallahi M, Haeutle D, Perabo FGE, Steiner G, Blatter J, Müller SC. Gemcitabine monotherapy as second-line treatment in cisplatin-refractory transitional cell carcinoma - prognostic factors for response and improvement of quality of life. Oncol Res Treat 2002; 25:47-52. [PMID: 11893883 DOI: 10.1159/000055202] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [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: 11/19/2022]
Abstract
OBJECTIVES i) To evaluate objective response, toxicity, and quality of life (QoL) of gemcitabine monotherapy as second-line treatment in patients with cisplatin-refractory, metastatic transitional cell carcinoma (TCC). ii) To assess prognostic parameters for response to treatment and for improvement of QoL parameters. PATIENTS AND METHODS 30 patients were prospectively enrolled in this open-label, nonrandomized multicenter phase II trial. Patients received up to 6 courses of gemcitabine monotherapy (1,250 mg/m(2) on day 1 and 8 of a 21-day course). 28 of 30 patients were available for response evaluation. RESULTS Objective response (OR) was seen in 3/28 (11%) of patients (2 complete remissions, 1 partial remission). The mean time to progression (TTP) was 4.9 +/- 3.5 months and mean disease-specific survival time was 8.7 +/- 4.7 months. 13 of 28 patients did not progress (OR + 10 stable diseases), and TTP (8.0 +/- 2.7 months, p < 0.001) as well as survival time (10.2 +/- 3.8 months, p < 0.05) differed significantly from those who showed progressive disease within 18 weeks of treatment. Pain values significantly improved in the group of responders from 4.3 +/- 1.9 to 5.8 +/- 1.3 points (p < 0.05). Response to cisplatin pretreatment was the best prognosticator for the response to gemcitabine. CONCLUSIONS Gemcitabine monotherapy as second-line treatment is justified in patients with metastatic TCC who are refractory to cisplatin treatment. Patients with initially OR to cisplatin benefit most from second-line treatment. QoL remains stable during treatment, and pain improves especially in patients with bone metastases.
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Affiliation(s)
- P Albers
- Klinik und Poliklinik für Urologie, Universitätsklinikum Bonn, Germany.
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Abstract
In patients with large defects of the glans penis consequent to organ-preserving tumor excision, we describe a vascularized flap formed from the outer preputial leaf for primary defect coverage. We have used this successfully in 3 men in whom both erections and penile length have been preserved.
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Affiliation(s)
- B Ubrig
- Department of Urology, University of Witten/Herdecke, Klinikum Wuppertal GmbH, Wuppertal, Germany
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Subramanian S, Fallahi M, Bonen L. Truncated and dispersed rpl2 and rps19 pseudogenes are co-transcribed with neighbouring downstream genes in wheat mitochondria. Curr Genet 2001; 39:264-72. [PMID: 11453256 DOI: 10.1007/s002940100204] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The wheat mitochondrial genome contains only partial coding sequences for the L2 and S19 ribosomal proteins, unlike in rice or liverwort mitochondria, where these genes are functional and have a bacterial-type linkage. A single-copy stretch corresponding to the extreme 3' terminus of the wheat rpl2 gene is co-transcribed with the trans-splicing nad1 exon 4; and, at another unique location, the rps19 segment lacking the 5' coding region is co-transcribed with the downstream nad4L gene. In both cases, the 5' termini of these transcripts map to promoter consensus motifs acquired through genomic reorganization, enabling continued expression of essential downstream genes. In both wheat and rice, the rpl2 and rps19 genomic regions differ in their RNA profiles between germinating embryos and seedlings. The absence of intact rpl2 and rps19 genes in wheat mitochondria is consistent with their inactivation through DNA rearrangement/deletion after the successful transfer of functional copies to the nucleus.
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Kristjánsson S, Eriksson N, Larsson A, Penner RS, Fallahi M. Observation of stable cylindrical modes in electrically pumped circular grating-coupled surface-emitting lasers. Appl Opt 2000; 39:1946-1953. [PMID: 18345092 DOI: 10.1364/ao.39.001946] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We present the results of a comprehensive experimental study of the modal behavior of electrically pumped circular grating-coupled surface-emitting lasers with resonant second-order gratings. Our results show stable cylindrical mode operation with azimuthal orders m = 1 and m = 52. We have found that, when a passive, unpumped 0.7-microm-deep indentation is included at the center of the circular resonator contact, the modal behavior becomes more stable with respect to increasing current. This result manifests itself in the lasing of two orthogonal m = 1 modes along with one higher-order mode from threshold to 2.2 times threshold or more. The spatial coherence of the cylindrical modes over the area of the resonator leads to better beam quality. Lasers without passive central indentations exhibit mode hopping between quasi-linear modes and higher-order cylindrical modes as the current is increased.
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Affiliation(s)
- S Kristjánsson
- Chalmers and Photonics Laboratory, Department of Microelectronics, Chalmers University of Technology, Microtechnology Centre, Göteborg, Sweden
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Mirnajafi-Zadeh J, Pourgholami MH, Palizvan MR, Rostampour M, Fallahi M. Anticonvulsant action of 2-chloroadenosine injected focally into the perirhinal cortex in amygdaloid kindled rats. Epilepsy Res 1999; 37:37-43. [PMID: 10515173 DOI: 10.1016/s0920-1211(99)00025-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [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: 11/18/2022]
Abstract
Possible anticonvulsant effects of 2-chloroadenosine injected focally into the perirhinal cortex of amygdala kindled rats were investigated over a 2 h period. Animals were microinfused (1 microl) with 2-chloroadenosine (2-CLA; 5, 10, 15, 25 and 100 nM) or artificial cerebrospinal fluid applied through a cannula located in the perirhinal cortex. At the doses employed, 2-CLA significantly reduced afterdischarge duration and stage 5 seizure duration. The latency to stage 4 seizure was increased only at the highest dose of 2-CLA (100 nM), while even at this dose no significant change in seizure stage could be seen. The maximum effect of 2-CLA was obtained 30 min after microinfusion of the drug. Pre-treatment (intraperirhinal cortex) of animals with the nonselective adenosine antagonist, caffeine (50 microM; 1 microl), blocked the anticonvulsant activity of 2-CLA. These results suggest that adenosine receptors located in the perirhinal cortex may play an important role in the suppression of seizure activity elicited from the amygdala.
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Affiliation(s)
- J Mirnajafi-Zadeh
- Department of Physiology, School of Medical Sciences, Tarbiat Modarres University, Tehran, Iran
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Abstract
Solgel grating waveguides and their application to the fabrication of external-cavity distributed Bragg reflector (DBR) lasers are demonstrated. A new composition of aluminosilicate material is developed for the fabrication of single-mode waveguides and Bragg reflectors. An average loss of <0.2 dB/cm is measured in the single-mode waveguides at 1550 nm. The reflectors show filtering greater than 97% near 1530 nm, with a bandwidth of ~0.6 nm . The Bragg reflectors are used as feedback resonators for DBR lasers. Single-mode lasing with a sidemode suppression of better than 25 dB is demonstrated.
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Rizzuto N, Morbin M, Cavallaro T, Ferrari S, Fallahi M, Galiazzo Rizzuto S. Focal lesions area feature of chronic inflammatory demyelinating polyneuropathy (CIDP). Acta Neuropathol 1998; 96:603-9. [PMID: 9845290 DOI: 10.1007/s004010050941] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [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: 11/29/2022]
Abstract
In a study designed to identify the neuropathological features typical of chronic inflammatory demyelinating polyneuropathy (CIDP), we reviewed the sural nerve biopsy findings in 105 patients with this disorder. The patients' mean age at biopsy was 49 years. In 65% of patients the disease had a progressive and in 35% a relapsing-remitting course. In 47% of cases the disorder was idiopathic; the remainder had various concurrent conditions. All sural nerve biopsy specimens showed varying amounts of active demyelination associated with onion bulbs (48% of cases), endoneurial edema (55%) and inflammatory infiltrates (25%). The immunopathological hallmarks were T cell infiltration with macrophagic activation and up-regulation of major histocompatibility complex (MHC) class II expression, without B cell infiltration or immunoglobulin deposition on myelin sheaths. In 30% of cases some myelin sheaths showed C3d deposition. Analysis of proinflammatory cytokine expression invariably showed interleukin-1 in perivascular and endoneurial ramified cells and tumor necrosis factor-alpha prevalently in epineurial macrophages, whereas it detected interferon-gamma only in samples with perivascular inflammatory cells. This immunological pattern suggests that the cellular components of immunity play the major role in CIDP. In 19% of cases the neuropathological changes had a focal distribution. This distinctive feature corresponded to more active demyelination, more frequent detection of inflammatory infiltrates and more prominent immunological activation, suggesting that focal involvement is a possible step in the course of the disease.
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Affiliation(s)
- N Rizzuto
- Department of Neurological and Visual Sciences, University of Verona, Policlinico di Borgo Roma, Italy
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Taylor RP, Fortin S, Sachrajda AS, Adams JA, Fallahi M, Davies M, Coleridge PT, Zawadzki P. Low-frequency noise in multiple-quantum-point-contact systems. Phys Rev B Condens Matter 1992; 45:9149-9152. [PMID: 10000778 DOI: 10.1103/physrevb.45.9149] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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