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Li F, Muhmood A, Tavakoli S, Park S, Kong L, Zhu H, Wei Y, Wei Y. Subcritical low temperature extraction of bioactive ingredients from foods and food by-products and its applications in the agro-food industry. Crit Rev Food Sci Nutr 2023:1-13. [PMID: 37039080 DOI: 10.1080/10408398.2023.2198009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
Abstract
Bioactive ingredients are part of the food chain and are responsible for numerous health benefits. Subcritical low temperature extraction has been employed to acquire bioactive ingredients because of its excellent properties, such as energy conservation, low temperature, elimination of residual solvent, and high extraction yield and quality. This review aims to provide a clear picture of the basics of subcritical-temperature extraction, its bioactive ingredient extraction efficiency, and possible applications in the agro-food industry. This review suggested that the extraction temperature, time, co-solvents, solid-fluid ratio, and pressure impacted the extraction efficiency of bioactive ingredients from foods and food by-products. Subcritical solvents are appropriate for extracting low polar ingredients, while the inclusion of co-solvents could extract medium and high polar substances. Bioactive ingredients from foods and food by-products can be used as antioxidants, colorants, and nutritional supplements. Additionally, this technology could remove pesticide residues in tea, concentrate edible proteins, and reduce cigarette tar. A new trend toward using subcritical low temperature extraction in extracting bioactive ingredients will acquire momentum.
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Affiliation(s)
- Fei Li
- College of Life Science, Qingdao University, Qingdao, China
| | - Atif Muhmood
- Institure of Soil Chemistry & Environmental Sciences, Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | - Samad Tavakoli
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Solju Park
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Lingyao Kong
- College of Life Science, Qingdao University, Qingdao, China
| | - Hongguang Zhu
- College of Life Science, Qingdao University, Qingdao, China
| | - Yuxi Wei
- College of Life Science, Qingdao University, Qingdao, China
| | - Yunlu Wei
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, China
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Tavakoli S, Mubango E, Tian L, Bohoussou ŃDri Y, Tan Y, Hong H, Luo Y. Novel intelligent films containing anthocyanin and phycocyanin for nondestructively tracing fish spoilage. Food Chem 2023; 402:134203. [DOI: 10.1016/j.foodchem.2022.134203] [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] [Received: 07/07/2022] [Revised: 08/25/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022]
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Tabebordbar S, Lagerborg K, Ye S, Stanton A, King E, Tellez L, Krunnfusz A, Tavakoli S, Widrick J, Messemer K, Troiano E, Moghadaszadeh B, Peacker B, Leacock K, Horwitz N, Beggs A, Wagers A, Sabeti P. I.11 Directed evolution of a family of AAV capsid variants enabling potent muscle-directed gene delivery across species. Neuromuscul Disord 2022. [DOI: 10.1016/j.nmd.2022.07.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Liang Y, Wang K, Yang Q, Zhang L, Shi C, Tavakoli S, Tan Y, Luo Y, Hong H. The antioxidant activities and flavor properties of glycated bighead carp meat hydrolysates produced with galactose and galacto-oligosaccharides. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113104] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tavakoli S, Hong H, Wang K, Yang Q, Gahruie HH, Zhuang S, Li Y, Liang Y, Tan Y, Luo Y. Ultrasonic-assisted food-grade solvent extraction of high-value added compounds from microalgae Spirulina platensis and evaluation of their antioxidant and antibacterial properties. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102493] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Daneshvar E, Sik Ok Y, Tavakoli S, Sarkar B, Shaheen SM, Hong H, Luo Y, Rinklebe J, Song H, Bhatnagar A. Insights into upstream processing of microalgae: A review. Bioresour Technol 2021; 329:124870. [PMID: 33652189 DOI: 10.1016/j.biortech.2021.124870] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [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: 01/01/2021] [Revised: 02/10/2021] [Accepted: 02/12/2021] [Indexed: 06/12/2023]
Abstract
The aim of this review is to provide insights into the upstream processing of microalgae, and to highlight the advantages of each step. This review discusses the most important steps of the upstream processing in microalgae research such as cultivation modes, photobioreactors design, preparation of culture medium, control of environmental factors, supply of microalgae seeds and monitoring of microalgal growth. An extensive list of bioreactors and their working volumes used, elemental composition of some well-known formulated cultivation media, different types of wastewater used for microalgal cultivation and environmental variables studied in microalgae research has been compiled in this review from the vast literature. This review also highlights existing challenges and knowledge gaps in upstream processing of microalgae and future research needs are suggested.
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Affiliation(s)
- Ehsan Daneshvar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130 Mikkeli, Finland
| | - Yong Sik Ok
- Korea Biochar Research Center, APRU Sustainable Waste Management Program and Division of Environmental Science and Ecological Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Samad Tavakoli
- Beijing Higher Institution Engineering Research Center of Animal Product, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Binoy Sarkar
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Sabry M Shaheen
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; King Abdulaziz University, Faculty of Meteorology, Environment, and Arid Land Agriculture, Department of Arid Land Agriculture, Jeddah 21589, Saudi Arabia; University of Kafrelsheikh, Faculty of Agriculture, Department of Soil and Water Sciences, 33516 Kafr El-Sheikh, Egypt
| | - Hui Hong
- Beijing Higher Institution Engineering Research Center of Animal Product, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Xinghua Industrial Research Centre for Food Science and Human Health, China Agricultural University, Xinghua, Jiangsu 225700, China
| | - Yongkang Luo
- Beijing Higher Institution Engineering Research Center of Animal Product, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Xinghua Industrial Research Centre for Food Science and Human Health, China Agricultural University, Xinghua, Jiangsu 225700, China
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; University of Sejong, Department of Environment, Energy and Geoinformatics, 98 Gunja-Dong, Guangjin-Gu, Seoul, Republic of Korea
| | - Hocheol Song
- Department of Environment and Energy, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Republic of Korea
| | - Amit Bhatnagar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130 Mikkeli, Finland.
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Nikoo M, Kianpoor K, Nikoo N, Javidanbardan S, Kazemi A, Choi F, Vogel M, Gholami A, Tavakoli S, Wong J, Moazen‐Zadeh E, Givaki R, Jazani M, Mohammadian F, Moghaddam NM, Schütz C, Jang K, Akhondzadeh S. Opium tincture for opioid substitution treatment. Eur Psychiatry 2021. [PMCID: PMC9471765 DOI: 10.1192/j.eurpsy.2021.455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Opium tincture (OT) is widely used for opioid substitution treatment (OST) in Iran. Objectives To determine if OT is a safe and effective medication for OST. Methods Opium Trial was a multicenter, double‐blind, noninferiority randomized controlled trial, with 204 participants with opioid dependence in Iran. Participants were then randomized to OT or methadone arms with an allocation ratio of 1:1 and were followed for 12 weeks. The primary outcome was retention in treatment, compared between the two groups using both intention-To-Treat (ITT) and Per-Protocol (PP) analyses. Results A total of 70 participants (IT: 68.6%, PP: 69.3%) in methadone arm and 61 participants (ITT: 59.8%, PP: 60.4%) in OT arm remained in the treatment. The relative retention rate was 1.15 (0.97, 1.36) in both analyses in favour of methadone. A total of 46 out of 152 (30.3%) participants in OT arm and 83 out of 168 (49.4%) participants in methadone arm reported opioid use outside the treatment. The difference in these two proportions (OT - methadone) was 19%: (10%, 28%) in favour of OT. The proportion of patients with adverse events were not different between the two arms (P = 0.06). There was no serious AE in OT arm. Conclusions Opium tincture is a clinically effective and safe medication, but this study could not conclude if it was as equally effective as methadone in retaining participants in treatment, but it showed that OT was superior to methadone in reducing opioid use outside the treatment. Disclosure No significant relationships.
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Tavakoli S, Regenstein JM, Daneshvar E, Bhatnagar A, Luo Y, Hong H. Recent advances in the application of microalgae and its derivatives for preservation, quality improvement, and shelf-life extension of seafood. Crit Rev Food Sci Nutr 2021; 62:6055-6068. [PMID: 33706613 DOI: 10.1080/10408398.2021.1895065] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Seafood is a highly perishable food product due to microbiological, chemical, and enzymatic reactions, which are the principal causes of their rapid quality deterioration. Therefore, ever-increasing consumers' demand for high-quality seafood along with a negative perception of synthetic preservatives creates opportunities for natural preservatives such as microalgae extracts. They are potential alternatives to reduce microbial growth, increase oxidative stability, and protect the sensorial properties of seafood. Research has shown that the inclusion of microalgae extracts into the aquatic animal's diet could enhance their meat quality and increase production. This review focuses on the direct application of various microalgae extracts as seafood preservative, and their functional properties in seafood, such as antioxidant and antimicrobial activities. Besides, the potential nutritional application of microalgae extracts as an alternative in aqua-feed and their impact on seafood quality (indirect application) are also presented. The safety aspects and regulatory issues of products from microalgae are highlighted.
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Affiliation(s)
- Samad Tavakoli
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Joe M Regenstein
- Department of Food Science, Cornell University, Ithaca, New York, USA
| | - Ehsan Daneshvar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Mikkeli, Finland
| | - Amit Bhatnagar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Mikkeli, Finland
| | - Yongkang Luo
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Hui Hong
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,Xinghua Industrial Research Centre for Food Science and Human Health, China Agricultural University, Xinghua, Jiangsu, China
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Tavakoli S, Naseri M, Abedi E, Imani A. Shelf-life enhancement of whole rainbow trout ( Oncorhynchus mykiss) treated with Reshgak ice coverage. Food Sci Nutr 2018; 6:953-961. [PMID: 29983958 PMCID: PMC6021725 DOI: 10.1002/fsn3.636] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 12/21/2017] [Accepted: 01/08/2018] [Indexed: 12/03/2022] Open
Abstract
The effect of ice coverage comprised of Reshgak extract and Reshgak essential oil on shelf-life extension of chilled whole rainbow trout (Oncorhynchus mykiss) was evaluated. Chemical (peroxide value (PV), thiobarbituric acids (TBA), total volatile nitrogen base (TVB-N), and free fatty acids (FFA)), microbiological (total viable count (TVC) and psychrotrophic viable count (PVC)), and sensory evaluations (texture, color, flavor, and general acceptance) were investigated every 4 days during a 20-day storage period. Results revealed that the effect of both icing systems led to considerably lower bacterial counts and chemical indices in comparison with the traditional ice coverage without such phytogenic. According to sensory analyses, fish stored in ice containing Reshgak essential oil had a longer shelf-life (>16 days) and those stored in ice medium included with Reshgak extract possessed a shelf-life of 16 days, whereas lot stored in traditional ice showed a shorter shelf-life of 12 days.
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Affiliation(s)
- Samad Tavakoli
- Department of Natural Resources and EnvironmentalSchool of AgricultureShiraz UniversityShirazFarsIran
| | - Mahmood Naseri
- Department of Natural Resources and EnvironmentalSchool of AgricultureShiraz UniversityShirazFarsIran
| | - Elahe Abedi
- Department of Food Science and TechnologyFasa UniversityFasaIran
| | - Ahmad Imani
- Department of FisheriesFaculty of Natural ResourcesUrmia UniversityUrmiaIran
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Tavakoli S, Yassa N, Delnavazi MR, Akhbari M, Hadjiakhoondi A, Hajimehdipoor H, Khalighi-Sigaroodi F, Hajiaghaee R. Chemical composition and biological activities of the essential oils from different parts ofFerulago trifidaBoiss. Journal of Essential Oil Research 2017. [DOI: 10.1080/10412905.2017.1313178] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- S. Tavakoli
- Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, Iran
| | - N. Yassa
- Faculty of Pharmacy, Department of Pharmacognosy, Tehran University of Medical Sciences, Tehran, Iran
| | - M. R. Delnavazi
- Faculty of Pharmacy, Department of Pharmacognosy, Tehran University of Medical Sciences, Tehran, Iran
| | - M. Akhbari
- Essential Oils Research Institute, University of Kashan, Kashan, I.R, Iran
| | - A. Hadjiakhoondi
- Faculty of Pharmacy, Department of Pharmacognosy, Tehran University of Medical Sciences, Tehran, Iran
- Faculty of Pharmacy and Medicinal Plant Research Center, Department of Pharmacognosy, Tehran University of Medical Sciences, Tehran, Iran
| | - H. Hajimehdipoor
- Department of Traditional Pharmacy, School of Traditional Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - R. Hajiaghaee
- Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, Iran
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Tavakoli S, Rappl S, Fauler M, Frick M, Gottschalk K, Hobi N. Mechanobiophysics of the alveolus – Reconstruction of strain and forces at the gas-blood barrier. Pneumologie 2016. [DOI: 10.1055/s-0036-1583498] [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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Zamora DA, Downs KP, Ullevig SL, Tavakoli S, Kim HS, Qiao M, Greaves DR, Asmis R. Glutaredoxin 2a overexpression in macrophages promotes mitochondrial dysfunction but has little or no effect on atherogenesis in LDL-receptor null mice. Atherosclerosis 2015; 241:69-78. [PMID: 25966442 PMCID: PMC4466159 DOI: 10.1016/j.atherosclerosis.2015.04.805] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Revised: 04/23/2015] [Accepted: 04/24/2015] [Indexed: 12/31/2022]
Abstract
AIMS Reactive oxygen species (ROS)-mediated formation of mixed disulfides between critical cysteine residues in proteins and glutathione, a process referred to as protein S-glutathionylation, can lead to loss of enzymatic activity and protein degradation. Since mitochondria are a major source of ROS and a number of their proteins are susceptible to protein-S-glutathionylation, we examined if overexpression of mitochondrial thioltranferase glutaredoxin 2a (Grx2a) in macrophages of dyslipidemic atherosclerosis-prone mice would prevent mitochondrial dysfunction and protect against atherosclerotic lesion formation. METHODS AND RESULTS We generated transgenic Grx2aMac(LDLR-/-) mice, which overexpress Grx2a as an EGFP fusion protein under the control of the macrophage-specific CD68 promoter. Transgenic mice and wild type siblings were fed a high fat diet for 14 weeks at which time we assessed mitochondrial bioenergetic function in peritoneal macrophages and atherosclerotic lesion formation. Flow cytometry and Western blot analysis demonstrated transgene expression in blood monocytes and peritoneal macrophages isolated from Grx2aMac(LDLR-/-) mice, and fluorescence confocal microscopy studies confirmed that Grx2a expression was restricted to the mitochondria of monocytic cells. Live-cell bioenergetic measurements revealed impaired mitochondrial ATP turnover in macrophages isolated from Grx2aMac(LDLR-/-) mice compared to macrophages isolated from non-transgenic mice. However, despite impaired mitochondrial function in macrophages of Grx2aMac(LDLR-/-) mice, we observed no significant difference in the severity of atherosclerosis between wildtype and Grx2aMac(LDLR-/-) mice. CONCLUSION Our findings suggest that increasing Grx2a activity in macrophage mitochondria disrupts mitochondrial respiration and ATP production, but without affecting the proatherogenic potential of macrophages. Our data suggest that macrophages are resistant against moderate mitochondrial dysfunction and rely on alternative pathways for ATP synthesis to support the energetic requirements.
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Affiliation(s)
- D A Zamora
- Department of Biology, Trinity University, San Antonio, USA
| | - K P Downs
- Department of Clinical Laboratory Sciences, University of Texas Health Science Center at San Antonio, USA
| | - S L Ullevig
- Department of Kinesiology, Health, and Nutrition, University of Texas at San Antonio, San Antonio, USA
| | - S Tavakoli
- Department of Radiology, University of Texas Health Science Center at San Antonio, San Antonio, USA
| | - H S Kim
- Department of Clinical Laboratory Sciences, University of Texas Health Science Center at San Antonio, USA
| | - M Qiao
- Department of Clinical Laboratory Sciences, University of Texas Health Science Center at San Antonio, USA
| | - D R Greaves
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - R Asmis
- Department of Clinical Laboratory Sciences, University of Texas Health Science Center at San Antonio, USA; Department of Radiology, University of Texas Health Science Center at San Antonio, San Antonio, USA; Department of Biochemistry, University of Texas Health Science Center at San Antonio, USA.
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Kim H, Vanegas D, Nguyen H, Piefer L, Tavakoli S, Asmis R. Hematopoietic MKP-1 deficiency accelerates the development of atherosclerosis by hypersensitizing monocytes to chemokine activation and dysregulating macrophage polarization and autophagy. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.083] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Akhbari M, Tavakoli S, Delnavazi M. Volatile fraction composition and biological activities of the leaves, bark and fruits of Caucasian wingnut from Iran. Journal of Essential Oil Research 2013. [DOI: 10.1080/10412905.2013.828324] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Beigi Nass M, Biranvand Z, Hartatik T, Fayazil J, Tavakoli S. The Study of PIT1 Gene Polymorphism in the Najdi Cattle Using PCR-RFLP Method. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/javaa.2010.2001.2003] [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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Tavakoli S, Mederacke I, Herzog-Hauff S, Glebe D, Grün S, Strand D, Urban S, Gehring A, Galle PR, Böcher WO. Peripheral blood dendritic cells are phenotypically and functionally intact in chronic hepatitis B virus (HBV) infection. Clin Exp Immunol 2007; 151:61-70. [PMID: 18031557 DOI: 10.1111/j.1365-2249.2007.03547.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Persistence of hepatitis B virus (HBV) infection is associated with reduced anti-viral T cell responses. Impaired dendritic cell (DC) function was suggested as the cause of reduced T cell stimulation in chronic HBV carriers. Thus, we compared myeloid (mDC) and plasmacytoid DC (pDC) from chronic HBV carriers and controls. Frequency and phenotype of isolated DC were analysed by fluorescence activated cell sorter staining, DC function by mixed lymphocyte reaction, cytokine bead array, intracellular cytokine staining, enzyme-linked immunosorbent assay and enzyme-linked immunospot. Expression of HBV DNA and mRNA was studied by polymerase chain reaction (PCR). Circulating total DC, mDC or pDC were not reduced in chronic HBV carriers. Isolated mDC and pDC from chronic HBV carriers exhibited similar expression of co-stimulatory molecules and alloreactive T helper cell stimulation as control DC, whether tested directly ex vivo or after in vitro maturation. Secretion of pro- and anti-inflammatory cytokines by CD40 or Toll-like receptor ligand-stimulated patient DC was intact, as was human leucocyte antigen A2-restricted HBV-specific cytotoxic lymphocyte stimulation. Although both DC populations contained viral DNA, viral mRNA was undetectable by reverse transcription-PCR, arguing against viral replication in DC. We found no quantitative, phenotypic or functional impairment of mDC or pDC in chronic hepatitis B, whether studied ex vivo or after in vitro maturation.
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Affiliation(s)
- S Tavakoli
- Department of Internal Medicine, Johannes-Gutenberg University, Mainz, Germany
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Nassiri MB, Hamidi Z, Tavakoli S. The Investigation of Genetic Variation at Microsatellite Loci in Mazandaran Native Chickens. ACTA ACUST UNITED AC 2007. [DOI: 10.3923/ijps.2007.675.678] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [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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Ghasemi M, Sadeghipour H, Shafaroodi H, Nezami BG, Gholipour T, Hajrasouliha AR, Tavakoli S, Nobakht M, Moore KP, Mani AR, Dehpour AR. Role of the nitric oxide pathway and the endocannabinoid system in neurogenic relaxation of corpus cavernosum from biliary cirrhotic rats. Br J Pharmacol 2007; 151:591-601. [PMID: 17486141 PMCID: PMC2013996 DOI: 10.1038/sj.bjp.0707279] [Citation(s) in RCA: 24] [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: 12/17/2022] Open
Abstract
BACKGROUND AND PURPOSE Relaxation of corpus cavernosum, which is mediated by nitric oxide (NO) released from non-adrenergic non-cholinergic (NANC) neurotransmission, is critical for inducing penile erection and can be affected by many pathophysiological conditions. However, the peripheral effect of liver cirrhosis on erectile function is as yet unknown. The aim of the present study was to investigate the effect of biliary cirrhosis on NANC-mediated relaxation of rat corpus cavernosum and the possible roles of endocannabinoid and nitric oxide systems in this model. EXPERIMENTAL APPROACH Cirrhosis was induced by bile duct ligation. Controls underwent sham operation. Four weeks later, strips of corpus cavernosum were mounted in a standard organ bath and NANC-mediated relaxations were obtained by applying electrical field stimulation. KEY RESULTS The NANC-mediated relaxation was enhanced in corporal strips from cirrhotic animals. Anandamide potentiated the relaxations in both groups. Either AM251 (CB(1) antagonist) or capsazepine (vanilloid VR(1) antagonist), but not AM630 (CB(2) antagonist), prevented the enhanced relaxations of cirrhotic strips. Either the non-selective NOS inhibitor L-NAME or the selective neuronal NOS inhibitor L-NPA inhibited relaxations in both groups, but cirrhotic groups were more resistant to the inhibitory effects of these agents. Relaxations to sodium nitroprusside (NO donor) were similar in tissues from the two groups. CONCLUSIONS AND IMPLICATIONS Cirrhosis potentiates the neurogenic relaxation of rat corpus cavernosum probably via the NO pathway and involving cannabinoid CB(1) and vanilloid VR(1) receptors.
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Affiliation(s)
- M Ghasemi
- Department of Pharmacology, School of Medicine, Medical Sciences/University of Tehran Tehran, Iran
- The UCL Institute of Hepatology, Department of Medicine, Royal Free and University College Medical School, UCL London, UK
| | - H Sadeghipour
- Department of Pharmacology, School of Medicine, Medical Sciences/University of Tehran Tehran, Iran
| | - H Shafaroodi
- Department of Pharmacology, Tehran Medical Unit, Islamic Azad University of Medical Sciences Tehran, Iran
| | - B G Nezami
- Department of Pharmacology, School of Medicine, Medical Sciences/University of Tehran Tehran, Iran
| | - T Gholipour
- Department of Pharmacology, School of Medicine, Medical Sciences/University of Tehran Tehran, Iran
| | - A R Hajrasouliha
- Department of Pharmacology, School of Medicine, Medical Sciences/University of Tehran Tehran, Iran
| | - S Tavakoli
- Department of Pharmacology, School of Medicine, Medical Sciences/University of Tehran Tehran, Iran
| | - M Nobakht
- Department of Histology, Medical School, Iran University of Medical Sciences Tehran, Iran
| | - K P Moore
- The UCL Institute of Hepatology, Department of Medicine, Royal Free and University College Medical School, UCL London, UK
| | - A R Mani
- The UCL Institute of Hepatology, Department of Medicine, Royal Free and University College Medical School, UCL London, UK
| | - A R Dehpour
- Department of Pharmacology, School of Medicine, Medical Sciences/University of Tehran Tehran, Iran
- Author for correspondence:
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Hajrasouliha AR, Tavakoli S, Esteki A, Nafisi S, Noorolahi-Moghaddam H. Abnormal viscoelastic behaviour of passive ankle joint movement in diabetic patients: an early or a late complication? Diabetologia 2005; 48:1225-8. [PMID: 15868136 DOI: 10.1007/s00125-005-1757-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2004] [Accepted: 01/13/2005] [Indexed: 10/25/2022]
Abstract
AIMS/HYPOTHESIS The goal of the present study was to compare the range of motion and both the viscous and elastic components of passive ankle joint movement in short- and long-term diabetic patients with that of a control population. METHODS Thirty-four diabetic patients and 16 control subjects entered into the study. Patients with a history of over 15 years of diabetes were considered as a long-term diabetic group. In order to quantify the passive ankle joint movement, a device was designed to measure the dorsi- and plantar-flexion angle and the net moment at the ankle. Elastic behaviour was examined as the separate slope of regression lines (stiffness) of plantar and dorsal components in the loading moment-angle curve. It was also examined as the slope of the regression line in the final 10% of each component. Hysteresis, a characteristic of viscoelastic materials that indicates loss of energy during unloading, was corrected for range of motion and used to examine viscous behaviour of the ankle joint. RESULTS Total and plantar ranges of motion were significantly lower in long-term diabetic patients than in short-term diabetic and control groups (p < 0.05). Plantar-flexion stiffness was significantly lower in short-term diabetic patients than in control subjects and long-term diabetic groups (p < 0.05). Corrected hysteresis was significantly higher in long-term diabetic than in short-term diabetic and control (p < 0.05) groups in the dorsal range of motion. CONCLUSIONS/INTERPRETATION This study shows that both decreased plantar and total ankle joint ranges of motion, and increased viscous component of passive ankle joint movement are among the late complications of diabetes.
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Affiliation(s)
- A R Hajrasouliha
- Department of Neurology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Tavakoli S, Cowan MJ, Benfield T, Logun C, Shelhamer JH. Prostaglandin E(2)-induced interleukin-6 release by a human airway epithelial cell line. Am J Physiol Lung Cell Mol Physiol 2001; 280:L127-33. [PMID: 11133502 DOI: 10.1152/ajplung.2001.280.1.l127] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [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: 11/22/2022] Open
Abstract
Human airway epithelial cell release of interleukin (IL)-6 in response to lipid mediators was studied in an airway cell line (BEAS-2B). Prostaglandin (PG) E(2) (10(-7) M) treatment caused an increase in IL-6 release at 2, 4, 8, and 24 h. IL-6 release into the culture medium at 24 h was 3,396 +/- 306 vs. 1,051 +/- 154 pg/ml (PGE(2)-treated cells vs. control cells). PGE(2) (10(-7) to 10(-10) M) induced a dose-related increase in IL-6 release at 24 h. PGF(2 alpha) (10(-6) M) treatment caused a similar effect to that of PGE(2) (10(-7) M). PGE(2) analogs with relative selectivity for PGE(2) receptor subtypes were studied. Sulprostone, a selective agonist for the EP-3 receptor subtype had no effect on IL-6 release. 11-Deoxy-16,16-dimethyl-PGE(2), an EP-2/4 agonist, and 17-phenyl trinor PGE(2), an agonist selective for the EP-1 > EP-3 receptor subtype (10(-6) to 10(-8) M), caused dose-dependent increases in IL-6 release. 8-Bromo-cAMP treatment resulted in dose-related increases in IL-6 release. RT-PCR of BEAS-2B cell mRNA demonstrated mRNA for EP-1, EP-2, and EP-4 receptors. After PGE(2) treatment, increases in IL-6 mRNA were noted at 4 and 18 h. Therefore, PGE(2) increases airway epithelial cell IL-6 production and release.
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Affiliation(s)
- S Tavakoli
- Critical Care Medicine Department, Clinical Center, National Institutes of Health, Bethesda, Maryland 20892, USA
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Farhud DD, Hedayat S, Amirshahi P, Tavakoli S, Daneshmand P, Sawhney KS, Montazemi K. Tf, Gc and Cp phenotypes in favism and G-6-PD deficiency. Indian J Med Res 1978; 68:990-4. [PMID: 750450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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