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Dadrasi A, Chaichi M, Nehbandani A, Sheikhi A, Salmani F, Nemati A. Addressing food insecurity: An exploration of wheat production expansion. PLoS One 2023; 18:e0290684. [PMID: 38091331 PMCID: PMC10718460 DOI: 10.1371/journal.pone.0290684] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 08/09/2023] [Indexed: 12/18/2023] Open
Abstract
Wheat plays a crucial role in global food security, serving as a vital food crop that feeds billions of people worldwide. Currently, Russia and Ukraine are responsible for exporting approximately 25% of the world's wheat, making any issues in these regions a cause for concern regarding global wheat supply. The problems faced in these areas have led to a surge in wheat prices worldwide. Consequently, it becomes necessary to explore alternative regions that can compensate for the decline in wheat production and supply. This study focuses on wheat production and yield in major producing countries, utilizing the GYGA (Global Yield Gap Atlas) protocol for predictions. The findings reveal a global wheat production gap of 270,378,793 tons. Notably, the largest gap in irrigated wheat production exists in countries like China, India, Pakistan, Turkey, Iran, Afghanistan, Uzbekistan, Egypt, and Azerbaijan. Additionally, the rainfed wheat production gap on a global scale amounts to 545,215,692 tons, with Russia, the USA, Kazakhstan, Australia, Ukraine, China, Turkey, Canada, India, and France having the most significant production gaps. Through boundary line analysis, specific criteria were identified for suitable areas of irrigated and rainfed wheat cultivation. For irrigated conditions, the temperature range of 3000 to 7000 GDD (Growing Degree Days) and a temperature seasonality of 3 were determined as favorable. Under rainfed conditions, the suitable areas encompass a temperature range of 2000 to 4000 GDD, an aridity index exceeding 600, and a temperature seasonality of 2. Thirteen countries possess extensive agricultural land within the climatic codes favorable for irrigated wheat cultivation. Approximately 50% of the agricultural lands within these countries, corresponding to the total arable area for irrigated wheat, fall within the climatic codes 3403, 5403, 5303, 4303, 5503, 5203, 3503, 3303, and 4103. China, the United States, Ukraine, Russia, and Iran are the top five countries with favorable lands for irrigated wheat cultivation. Similarly, fourteen countries have significant agricultural lands within the favorable climatic codes for rainfed wheat cultivation. Around 52% of the agricultural lands within these countries are within the climatic codes 3702, 2702, 2802, and 4602. France, Germany, Britain, Poland, and Denmark possess the highest potential to expand rainfed wheat cultivation areas within these favorable climate codes, with respective areas of 2.7, 2.6, 1.6, and 0.9 million hectares. According to the study, the North China Plain emerges as a primary region for increasing irrigated wheat production, both in terms of cultivated area and yield potential. For rainfed conditions, the European continent stands out as a significant region to enhance wheat production.
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Affiliation(s)
- Amir Dadrasi
- Department of Agronomy, Agriculture College, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Mehrdad Chaichi
- Department of Seed and Plant Improvement Research, Hamadan Agriculture and Natural Resources, Research and Education Center, Agriculture Research, Education and Extension Organization, Hamadan, Iran
| | - Alireza Nehbandani
- Department of Plant Production, Gorgan University of Agricultural Sciences, Gorgan, Iran
| | - Abdollatif Sheikhi
- Department of Horticulture, Agriculture College, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Fatemeh Salmani
- Department of Plant Production, Gorgan University of Agricultural Sciences, Gorgan, Iran
| | - Ahmad Nemati
- Hamadan Agriculture and Natural Resources, Research and Education Center, Agriculture Research, Education and Extension Organization, Hamadan, Iran
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Sheikhi A, Arab MM, Davis M, Palmer WJ, Michelmore R, Brown PJ. Contrasting allelic effects for pistachio salinity tolerance in juvenile and mature trees. Sci Rep 2023; 13:14391. [PMID: 37658100 PMCID: PMC10474094 DOI: 10.1038/s41598-023-41195-1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 08/23/2023] [Indexed: 09/03/2023] Open
Abstract
Breeding perennial tree crops often requires prediction of mature performance from juvenile data. To assess the utility of juvenile screens to predict salinity tolerance of mature pistachio trees, we compared performance of 3-month ungrafted seedlings and 4-year-old grafted rootstocks under salinity stress. The QTL allele associated with higher salt exclusion from seedling leaves conferred lower growth in saline field conditions, suggesting that mapping QTL in seedlings may be easier than discerning the optimal allele for field performance.
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Affiliation(s)
| | - Mohammad M Arab
- Department of Plant Sciences, University of California, Davis, USA
| | - Matthew Davis
- Department of Plant Sciences, University of California, Davis, USA
| | - William J Palmer
- The Genome Center, University of California, Davis, USA
- Gencove Inc, New York, USA
| | - Richard Michelmore
- Department of Plant Sciences, University of California, Davis, USA
- The Genome Center, University of California, Davis, USA
| | - Pat J Brown
- Department of Plant Sciences, University of California, Davis, USA.
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Doogue R, Hayes P, Hebert R, Sheikhi A, Rai T, Morton K, Roman C, McManus RJ, Glynn LG. Towards an integrated blood pressure self-monitoring solution for stroke/TIA in Ireland: a mixed methods feasibility study for the TASMIN5S IRL randomised controlled trial. Pilot Feasibility Stud 2023; 9:9. [PMID: 36639797 PMCID: PMC9837752 DOI: 10.1186/s40814-023-01240-2] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 01/04/2023] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Optimising blood pressure (BP) control is one of the most important modifiable risk factors in preventing subsequent stroke where the risk increases by one-third for every 10 mmHg rise in systolic BP. This study evaluated the feasibility and potential effectiveness of blood pressure self-monitoring with planned medication titration, to inform a definitive trial of the intervention, in patients with a previous stroke or transient ischaemic attack (TIA). METHODS Patients with a history of stroke/TIA and sub-optimal BP control were invited to take part in a mixed methods feasibility study for a randomised controlled trial. Those meeting the inclusion criteria with systolic BP >130 mmHg were randomised to a self-monitoring intervention group or usual care group. The intervention involved self-monitoring BP twice a day for 3 days within a 7-day period, every month, following text message reminders. Treatment escalation, based on a pre-agreed plan by the general practitioner (GP) and patient, was initiated according to the results of these readings. Semi-structured interviews were carried out with patients and clinicians and analysed thematically. RESULTS Of those identified, 47% (32/68) attended for assessment. Of those assessed, 15 were eligible for recruitment and were consented and randomised to the intervention or control group on a 2:1 basis. Of those randomised, 93% (14/15) completed the study and there were no adverse events. Systolic BP was lower in the intervention group at 3 months. Participants found the intervention acceptable and easy to use. GPs found it easy to incorporate into their practice activity without increasing workload. CONCLUSIONS TASMIN5S, an integrated blood pressure self-monitoring intervention in patients with a previous stroke/TIA, is feasible and safe to deliver in primary care. A pre-agreed three-step medication titration plan was easily implemented, increased patient involvement in their care, and had no adverse effects. This feasibility study provides important information to inform a definitive trial to determine the potential effectiveness of the intervention in patients post-stroke or TIA. TRIAL REGISTRATION ISRCTN57946500 . Registered on 12/08/2019.
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Affiliation(s)
- R. Doogue
- grid.10049.3c0000 0004 1936 9692School of Medicine, University of Limerick, Limerick, Ireland
| | - P. Hayes
- grid.10049.3c0000 0004 1936 9692School of Medicine, University of Limerick, Limerick, Ireland ,grid.10049.3c0000 0004 1936 9692Health Research Institute, University of Limerick, Limerick, Ireland
| | - R. Hebert
- grid.10049.3c0000 0004 1936 9692School of Medicine, University of Limerick, Limerick, Ireland
| | - A. Sheikhi
- grid.10049.3c0000 0004 1936 9692Health Research Institute, University of Limerick, Limerick, Ireland
| | - T. Rai
- grid.4991.50000 0004 1936 8948Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - K. Morton
- grid.5491.90000 0004 1936 9297Centre for Clinical and Community Applications of Health Psychology, School of Psychology, University of Southampton, Southampton, SO17 1BJ UK
| | - C. Roman
- grid.4991.50000 0004 1936 8948Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, UK
| | - R. J. McManus
- grid.4991.50000 0004 1936 8948Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - L. G. Glynn
- grid.10049.3c0000 0004 1936 9692School of Medicine, University of Limerick, Limerick, Ireland ,HRB Primary Care Clinical Trial Network Ireland, Galway, Ireland
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Carroll I, O'Connor M, Cunningham N, Ryan S, Corey G, McNamara D, Galvin R, Sheikhi A, Shannahan E, Mastalska A, Dillon J, Barry L. 309 A FRAILTY CENSUS OF INPATIENTS AGED 65 AND OVER ADMITTED TO A MODEL 4 HOSPITAL. Age Ageing 2022. [DOI: 10.1093/ageing/afac218.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Frailty is a risk factor for in-hospital mortality, long hospital stay and functional decline at discharge. Profiling the prevalence and level of frailty within the acute hospital setting is vital to ensure evidence-based practice and service development within the construct of frailty.
Methods
All patients aged ≥65 years and admitted to a medical or surgical inpatient setting, were screened over a 12-hour period (08:00-20:00) using validated frailty and co-morbidity scales. Age and Gender Demographics, Clinical Frailty Scale (CFS), Charlson Co-morbidity Index (CHI) and admitting specialty (Medical/Surgical) were collected. The data was fully anonymised and ethical approval was granted. Descriptive statistics were used to profile the cohort and Chi-squared tests applied for comparisons.
Results
Within a sample of 413 patients, 291(70%) were ≥65yrs. Of this cohort, 202(70%) were ≥75yrs. 207(71%) utilised in-patient medical services and 121(41%) surgical services while 37(12%) used both. The mean CFS was 6 indicating moderate frailty levels and the mean CCI score was 4 denoting moderate co-morbidity. Overall: 195(67%) had moderate-severe frailty (CSF ≥6) while 218 (75%) had moderate-severe co-morbidity (CCI Mod 3-4, Severe ≥5). Associations with age >75 and frailty (p=0.001) and medical service usage and frailty (p=0.004) were established. No significant differences were observed across genders for CFS (p=0.110) and CCI (p=0.465).
Conclusion
There is a high prevalence of frailty and co-morbidity within the admitted patient cohort ≥65yrs. Overcrowding across the hospital system and higher levels of frailty and comorbidity will contribute to increased lengths of stay and the need for specialist intervention, particularly for those ≥75yrs who represented 70% of patients screened. With an increased focus on the integration of care for older adults across care transitions, there is a clear need for expansion of frailty-based services and staff training in frailty care across the hospital and community setting.
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Affiliation(s)
- I Carroll
- University Hospital Limerick Department of Aging and Therapeutics, Medical Directorate, , Limerick, Ireland
| | - M O'Connor
- University Hospital Limerick Department of Aging and Therapeutics, Medical Directorate, , Limerick, Ireland
- University of Limerick School of Medicine, Faculty of Education and Health Sciences, , Limerick, Ireland
- University of Limerick Ageing Research Centre, , Limerick, Ireland
| | - N Cunningham
- University Hospital Limerick Department of Aging and Therapeutics, Medical Directorate, , Limerick, Ireland
- University of Limerick Department of Nursing and Midwifery, Faculty of Education and Health Sciences, , Limerick, Ireland
| | - S Ryan
- University Hospital Limerick Department of Aging and Therapeutics, Medical Directorate, , Limerick, Ireland
| | - G Corey
- University Hospital Limerick ALERT Limerick EM Education Research Training, Emergency Department, , Limerick, Ireland
| | - D McNamara
- University Hospital Limerick Medical Directorate, , Limerick, Ireland
- University of Limerick Department of Nursing and Midwifery, Faculty of Education and Health Sciences, , Limerick, Ireland
| | - R Galvin
- University of Limerick School of Allied Health, Faculty of Education and Health Sciences, , Limerick, Ireland
- University of Limerick Ageing Research Centre, , Limerick, Ireland
| | - A Sheikhi
- University of Limerick Health Research Institute, , Limerick, Ireland
| | - E Shannahan
- University Hospital Limerick Department of Aging and Therapeutics, Medical Directorate, , Limerick, Ireland
- University of Limerick Ageing Research Centre, , Limerick, Ireland
| | - A Mastalska
- University Hospital Limerick Department of Aging and Therapeutics, Medical Directorate, , Limerick, Ireland
| | - J Dillon
- University Hospital Limerick Medical Directorate, , Limerick, Ireland
| | - L Barry
- University of Limerick School of Allied Health, Faculty of Education and Health Sciences, , Limerick, Ireland
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Tierney A, Curran M, Collins L, Kennedy L, McDonnell C, Jurascheck A, Sheikhi A, Walsh C, Button B, Casserly B, Cahalan R. P231 Steps Ahead: optimising physical activity in adults with cystic fibrosis - a pilot randomised trial using wearable technology, goal setting and text message feedback. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00560-4] [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: 10/18/2022]
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Vahdati K, Sarikhani S, Arab MM, Leslie CA, Dandekar AM, Aletà N, Bielsa B, Gradziel TM, Montesinos Á, Rubio-Cabetas MJ, Sideli GM, Serdar Ü, Akyüz B, Beccaro GL, Donno D, Rovira M, Ferguson L, Akbari M, Sheikhi A, Sestras AF, Kafkas S, Paizila A, Roozban MR, Kaur A, Panta S, Zhang L, Sestras RE, Mehlenbacher SA. Advances in Rootstock Breeding of Nut Trees: Objectives and Strategies. Plants (Basel) 2021; 10:plants10112234. [PMID: 34834597 PMCID: PMC8623031 DOI: 10.3390/plants10112234] [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] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/06/2021] [Accepted: 10/15/2021] [Indexed: 05/31/2023]
Abstract
The production and consumption of nuts are increasing in the world due to strong economic returns and the nutritional value of their products. With the increasing role and importance given to nuts (i.e., walnuts, hazelnut, pistachio, pecan, almond) in a balanced and healthy diet and their benefits to human health, breeding of the nuts species has also been stepped up. Most recent fruit breeding programs have focused on scion genetic improvement. However, the use of locally adapted grafted rootstocks also enhanced the productivity and quality of tree fruit crops. Grafting is an ancient horticultural practice used in nut crops to manipulate scion phenotype and productivity and overcome biotic and abiotic stresses. There are complex rootstock breeding objectives and physiological and molecular aspects of rootstock-scion interactions in nut crops. In this review, we provide an overview of these, considering the mechanisms involved in nutrient and water uptake, regulation of phytohormones, and rootstock influences on the scion molecular processes, including long-distance gene silencing and trans-grafting. Understanding the mechanisms resulting from rootstock × scion × environmental interactions will contribute to developing new rootstocks with resilience in the face of climate change, but also of the multitude of diseases and pests.
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Affiliation(s)
- Kourosh Vahdati
- Department of Horticulture, College of Aburaihan, University of Tehran, Tehran 3391653755, Iran; (S.S.); (M.M.A.); (M.R.R.)
| | - Saadat Sarikhani
- Department of Horticulture, College of Aburaihan, University of Tehran, Tehran 3391653755, Iran; (S.S.); (M.M.A.); (M.R.R.)
| | - Mohammad Mehdi Arab
- Department of Horticulture, College of Aburaihan, University of Tehran, Tehran 3391653755, Iran; (S.S.); (M.M.A.); (M.R.R.)
| | - Charles A. Leslie
- Department of Plant Sciences, University of California Davis, One Shields, Avenue, Davis, CA 95616, USA; (C.A.L.); (A.M.D.); (T.M.G.); (G.M.S.); (L.F.)
| | - Abhaya M. Dandekar
- Department of Plant Sciences, University of California Davis, One Shields, Avenue, Davis, CA 95616, USA; (C.A.L.); (A.M.D.); (T.M.G.); (G.M.S.); (L.F.)
| | - Neus Aletà
- Institut de Recerca i Tecnologia Agroalimentàries, IRTA Fruit Production, Torre Marimon, 08140 Caldes de Montbui, Spain;
| | - Beatriz Bielsa
- Unidad de Hortofruticultura, Centro de Investigación y Tecnología Agroalimentaria de Aragón, Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), Av. Montañana 930, 50059 Zaragoza, Spain; (B.B.); (Á.M.); (M.J.R.-C.)
| | - Thomas M. Gradziel
- Department of Plant Sciences, University of California Davis, One Shields, Avenue, Davis, CA 95616, USA; (C.A.L.); (A.M.D.); (T.M.G.); (G.M.S.); (L.F.)
| | - Álvaro Montesinos
- Unidad de Hortofruticultura, Centro de Investigación y Tecnología Agroalimentaria de Aragón, Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), Av. Montañana 930, 50059 Zaragoza, Spain; (B.B.); (Á.M.); (M.J.R.-C.)
| | - María José Rubio-Cabetas
- Unidad de Hortofruticultura, Centro de Investigación y Tecnología Agroalimentaria de Aragón, Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), Av. Montañana 930, 50059 Zaragoza, Spain; (B.B.); (Á.M.); (M.J.R.-C.)
- Instituto Agroalimentario de Aragón–IA2 (CITA-Universidad de Zaragoza), 50059 Zaragoza, Spain
| | - Gina M. Sideli
- Department of Plant Sciences, University of California Davis, One Shields, Avenue, Davis, CA 95616, USA; (C.A.L.); (A.M.D.); (T.M.G.); (G.M.S.); (L.F.)
| | - Ümit Serdar
- Department of Horticulture, Faculty of Agriculture, Ondokuz Mayıs University, Samsun 55139, Turkey; (Ü.S.); (B.A.)
| | - Burak Akyüz
- Department of Horticulture, Faculty of Agriculture, Ondokuz Mayıs University, Samsun 55139, Turkey; (Ü.S.); (B.A.)
| | - Gabriele Loris Beccaro
- Department of Agricultural, Forest and Food Sciences, University of Torino, 10124 Torino, Italy; (G.L.B.); (D.D.)
| | - Dario Donno
- Department of Agricultural, Forest and Food Sciences, University of Torino, 10124 Torino, Italy; (G.L.B.); (D.D.)
| | - Mercè Rovira
- Institut de Recerca i Tecnologia Agroalimentàries, IRTA Fruit Production, Mas Bové, Ctra. Reus-El Morell, Km. 3.8, 43120 Constantí, Spain;
| | - Louise Ferguson
- Department of Plant Sciences, University of California Davis, One Shields, Avenue, Davis, CA 95616, USA; (C.A.L.); (A.M.D.); (T.M.G.); (G.M.S.); (L.F.)
| | | | - Abdollatif Sheikhi
- Department of Horticultural Sciences, College of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan 7718897111, Iran;
| | - Adriana F. Sestras
- Faculty of Horticulture, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania;
| | - Salih Kafkas
- Department of Horticulture, Faculty of Agriculture, Cukurova University, Adana 01380, Turkey; (S.K.); (A.P.)
| | - Aibibula Paizila
- Department of Horticulture, Faculty of Agriculture, Cukurova University, Adana 01380, Turkey; (S.K.); (A.P.)
| | - Mahmoud Reza Roozban
- Department of Horticulture, College of Aburaihan, University of Tehran, Tehran 3391653755, Iran; (S.S.); (M.M.A.); (M.R.R.)
| | - Amandeep Kaur
- Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, OK 74078, USA; (A.K.); (S.P.); (L.Z.)
| | - Srijana Panta
- Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, OK 74078, USA; (A.K.); (S.P.); (L.Z.)
| | - Lu Zhang
- Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, OK 74078, USA; (A.K.); (S.P.); (L.Z.)
| | - Radu E. Sestras
- Faculty of Horticulture, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania;
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Curran M, Tierney A, Collins L, Kennedy L, McDonnell C, Jurascheck A, Sheikhi A, Button B, Casserly B, Cahalan R. P198 Physical activity is associated with aerobic capacity and lung function in adults with cystic fibrosis. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01223-6] [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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Adib AA, Sheikhi A, Shahhosseini M, Simeunović A, Wu S, Castro CE, Zhao R, Khademhosseini A, Hoelzle DJ. Direct-write 3D printing and characterization of a GelMA-based biomaterial for intracorporeal tissue. Biofabrication 2020; 12:045006. [PMID: 32464607 DOI: 10.1088/1758-5090/ab97a1] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We develop and characterize a biomaterial formulation and robotic methods tailored for intracorporeal tissue engineering (TE) via direct-write (DW) 3D printing. Intracorporeal TE is defined as the biofabrication of 3D TE scaffolds inside of a living patient, in a minimally invasive manner. A biomaterial for intracorporeal TE requires to be 3D printable and crosslinkable via mechanisms that are safe to native tissues and feasible at physiological temperature (37 °C). The cell-laden biomaterial (bioink) preparation and bioprinting methods must support cell viability. Additionally, the biomaterial and bioprinting method must enable the spatially accurate intracorporeal 3D delivery of the biomaterial, and the biomaterial must adhere to or integrate into the native tissue. Current biomaterial formulations do not meet all the presumed intracorporeal DW TE requirements. We demonstrate that a specific formulation of gelatin methacryloyl (GelMA)/Laponite®/methylcellulose (GLM) biomaterial system can be 3D printed at physiological temperature and crosslinked using visible light to construct 3D TE scaffolds with clinically relevant dimensions and consistent structures. Cell viability of 71%-77% and consistent mechanical properties over 21 d are reported. Rheological modifiers, Laponite® and methylcellulose, extend the degradation time of the scaffolds. The DW modality enables the piercing of the soft tissue and over-extrusion of the biomaterial into the tissue, creating a novel interlocking mechanism with soft, hydrated native tissue mimics and animal muscle with a 3.5-4 fold increase in the biomaterial/tissue adhesion strength compared to printing on top of the tissue. The developed GLM biomaterial and robotic interlocking mechanism pave the way towards intracorporeal TE.
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Affiliation(s)
- A Asghari Adib
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH, United States of America
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Jamshidi S, Yadollahi A, Arab MM, Soltani M, Eftekhari M, Sabzalipoor H, Sheikhi A, Shiri J. Combining gene expression programming and genetic algorithm as a powerful hybrid modeling approach for pear rootstocks tissue culture media formulation. Plant Methods 2019; 15:136. [PMID: 31832078 PMCID: PMC6859635 DOI: 10.1186/s13007-019-0520-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 11/07/2019] [Indexed: 05/26/2023]
Abstract
BACKGROUND Predicting impact of plant tissue culture media components on explant proliferation is important especially in commercial scale for optimizing efficient culture media. Previous studies have focused on predicting the impact of media components on explant growth via conventional multi-layer perceptron neural networks (MLPNN) and Multiple Linear Regression (MLR) methods. So, there is an opportunity to find more efficient algorithms such as Radial Basis Function Neural Network (RBFNN) and Gene Expression Programming (GEP). Here, a novel algorithm, i.e. GEP which has not been previously applied in plant tissue culture researches was compared to RBFNN and MLR for the first time. Pear rootstocks (Pyrodwarf and OHF) were used as case studies on predicting the effect of minerals and some hormones in the culture medium on proliferation indices. RESULTS Generally, RBFNN and GEP showed extremely higher performance accuracy than the MLR. Moreover, GEP models as the most accurate models were optimized using genetic algorithm (GA). The improvement was mainly due to the RBFNN and GEP strong estimation capability and their superior tolerance to experimental noises or improbability. CONCLUSIONS GEP as the most robust and accurate prospecting procedure to achieve the highest proliferation quality and quantity has also the benefit of being easy to use.
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Affiliation(s)
- Saeid Jamshidi
- Department of Horticultural Science, Faculty of Agriculture, Tarbiat Modares University (TMU), Tehran, Iran
| | - Abbas Yadollahi
- Department of Horticultural Science, Faculty of Agriculture, Tarbiat Modares University (TMU), Tehran, Iran
| | - Mohammad Mehdi Arab
- Department of Horticultural Science, Faculty of Agriculture, Tarbiat Modares University (TMU), Tehran, Iran
- Department of Horticultural Sciences, College of Aburaihan, University of Tehran (UT), Tehran, Iran
| | - Mohammad Soltani
- Department of Irrigation and Drainage Engineering, College of Aburaihan, University of Tehran, Tehran, Iran
| | - Maliheh Eftekhari
- Department of Horticultural Science, Faculty of Agriculture, Tarbiat Modares University (TMU), Tehran, Iran
| | - Hamed Sabzalipoor
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University (TMU), Tehran, Iran
| | - Abdollatif Sheikhi
- Department of Horticultural Sciences, College of Agriculture, Vali-e-Asr University of Rafsanjan, Kerman, Iran
| | - Jalal Shiri
- Department of Water Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
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Sheikhi A, Mirdehghan SH, Karimi HR, Ferguson L. Effects of Passive- and Active-Modified Atmosphere Packaging on Physio-Chemical and Quality Attributes of Fresh In-Hull Pistachios ( Pistacia vera L. cv. Badami). Foods 2019; 8:foods8110564. [PMID: 31717485 PMCID: PMC6915612 DOI: 10.3390/foods8110564] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 11/04/2019] [Accepted: 11/06/2019] [Indexed: 11/16/2022] Open
Abstract
The effects of passive- and active-modified atmosphere packaging (passive- and active-MAP) were investigated on the physio-chemical and quality attributes of fresh in-hull pistachios stored at 4 ± 1 °C and 90 ± 5% R.H. Fresh pistachios were packaged under each of the following gas combinations: active-MAP1 (AMA1) (5% O2 + 5% CO2), AMA2 (5% O2 + 25% CO2), AMA3 (5% O2 + 45% CO2), AMA4 (2.5% O2 + 5% CO2), AMA5 (2.5% O2 + 25% CO2), and AMA6 (2.5% O2 + 45% CO2), all balanced with N2, as well as passive-MAP (PMA) with ambient air (21% O2 + 0.03% CO2 + 78% N2). Changes in quality parameters were evaluated after 0, 15, 30 and 45 days of storage. Results demonstrated that AMA6 and PMA had significantly lower (7.96 Log CFU g-1) and higher (9.81 Log CFU g-1) aerobic mesophilic bacteria counts than the other treatments. However, the AMA6 treatment decreased, kernel chlorophyll and carotenoid content, hull antioxidant capacity, and anthocyanin content. The PMA treatment produced a significant weight loss, 0.18%, relative to the other treatments. The active-MAP treatments were more effective than the passive-MAP in decreasing weight loss, microbial counts, kernel total chlorophyll (Kernel TCL), and kernel carotenoid content (Kernel CAC). The postharvest quality of fresh in-hull pistachios was maintained best by the AMA3 (5% O2 + 45% CO2 + 50% N2) treatment.
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Affiliation(s)
- Abdollatif Sheikhi
- Department of Horticultural Sciences, College of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan 7718897111, Kerman, Iran; (A.S.); (H.R.K.)
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
| | - Seyed Hossein Mirdehghan
- Department of Horticultural Sciences, College of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan 7718897111, Kerman, Iran; (A.S.); (H.R.K.)
- Correspondence: (S.H.M.); (L.F.); Tel.: +98-343-131-2021 (S.H.M.); +1-530-752-0507 (L.F.)
| | - Hamid Reza Karimi
- Department of Horticultural Sciences, College of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan 7718897111, Kerman, Iran; (A.S.); (H.R.K.)
| | - Louise Ferguson
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
- Correspondence: (S.H.M.); (L.F.); Tel.: +98-343-131-2021 (S.H.M.); +1-530-752-0507 (L.F.)
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Curran M, Tierney A, Collins L, Kennedy L, McDonnell C, Sheikhi A, Walsh C, Casserly B, Cahalan R. ePS3.10 Reliability and validity of the ActivPAL and Fitbit Charge 2 as a measure of step count in cystic fibrosis. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30268-1] [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: 11/30/2022]
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Sheikhi A, Mirdehghan SH, Ferguson L. Extending storage potential of de-hulled fresh pistachios in passive-modified atmosphere. J Sci Food Agric 2019; 99:3426-3433. [PMID: 30609047 DOI: 10.1002/jsfa.9560] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 12/29/2018] [Accepted: 12/29/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND The effects of passive modified-atmosphere packaging (passive-MAP) on the postharvest quality of de-hulled fresh pistachios (Pistacia vera L. cv. Kerman) stored at cold temperature (0 ± 0.5 °C) and 90 ± 1% relative humidity was investigated with fruits under ambient air condition as the control treatment. The fruit quality parameters measured included kernel firmness, color values (L* , a* , b* , h°, and C* ), weight loss, fungal decay and marketability, ethylene production, respiration rate, and sensory characteristics at 0, 30, 60, and 105 days of storage. The carbon dioxide (CO2 ) and oxygen (O2 ) concentrations in the package headspace were monitored during storage. RESULTS A modified atmosphere of 0.95-3.35% O2 and 23.17-29.82% CO2 was achieved in the passive-MAP treatment. Fruit respiration rates increased significantly relative to controls throughout storage (P ≤ 0.01). However, storage had no significant effect on ethylene production rates. Additionally, passive-MAP-stored fruits maintained firmness, shell lightness, kernel color, and sensory quality with minimum weight loss and fungal decay, compared with the control. CONCLUSION These results demonstrate storage life of fresh pistachios in passive-MAP can be extended up to 105 days, compared with 30 days in ambient conditions. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Abdollatif Sheikhi
- Department of Plant Sciences, University of California Davis, Davis, CA, USA
- Department of Horticultural Sciences, College of Agriculture, Vali-e-Asr University of Rafsanjan, Kerman, Iran
| | - Seyed H Mirdehghan
- Department of Horticultural Sciences, College of Agriculture, Vali-e-Asr University of Rafsanjan, Kerman, Iran
| | - Louise Ferguson
- Department of Plant Sciences, University of California Davis, Davis, CA, USA
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Mousavi SM, Milajerdi A, Sheikhi A, Kord-Varkaneh H, Feinle-Bisset C, Larijani B, Esmaillzadeh A. Resveratrol supplementation significantly influences obesity measures: a systematic review and dose-response meta-analysis of randomized controlled trials. Obes Rev 2019; 20:487-498. [PMID: 30515938 DOI: 10.1111/obr.12775] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 09/05/2018] [Accepted: 09/06/2018] [Indexed: 12/17/2022]
Abstract
This study aimed to summarize earlier randomized controlled trials on the effects of resveratrol supplementation on body weight (BW), body mass index (BMI), waist circumference (WC) and fat mass (FM). We searched PubMed, SCOPUS, Cochrane Library and Google Scholar from inception to April 2018 using relevant keywords. All clinical trials investigating the effects of resveratrol supplementation on BW, BMI, WC and FM in adults were included. Overall, 28 trials were included. Pooled effect sizes suggested a significant effect of resveratrol administration on weight (weighted mean differences [WMD]: -0.51 kg, 95% confidence interval [CI]: -0.94 to -0.09; I2 = 50.3%, P = 0.02), BMI (WMD: -0.17 kg m-2 , 95% CI: -0.32, -0.03; I2 = 49.6%, P = 0.02) and WC (WMD: -0.79 cm, 95% CI: -1.39, -0.2; I2 = 13.4%, P = 0.009), respectively. However, no significant effect of resveratrol supplementation on FM was found (WMD: -0.36%, 95% CI: -0.88, 0.15; I2 = 0.0%, P = 0.16). Findings from subgroup analysis revealed a significant reduction in BW and BMI in trials using resveratrol at the dosage of <500 mg d-1 , those with long-term interventions (≥3 month), and performed on people with obesity. Taken together, the data suggest that resveratrol supplementation has beneficial effects to reduce BW, BMI and WC, but not FM.
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Affiliation(s)
- S M Mousavi
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran.,Students' Scientific Research Center (SSRC), Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - A Milajerdi
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran.,Students' Scientific Research Center (SSRC), Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - A Sheikhi
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - H Kord-Varkaneh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - C Feinle-Bisset
- University of Adelaide Discipline of Medicine and National Health and Medical Research Council Centre of Research Excellence of Translating Nutritional Science to Good Health, Adelaide, Australia
| | - B Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - A Esmaillzadeh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran.,Obesity and Eating Habits Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.,Food Security Research Center, Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
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Sheikhi A, van de Ven TGM. Squishy nanotraps: hybrid cellulose nanocrystal-zirconium metallogels for controlled trapping of biomacromolecules. Chem Commun (Camb) 2017; 53:8747-8750. [DOI: 10.1039/c7cc02844j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A brick-and-mortar-like ultrasoft nanocomposite metallogel is formed by crosslinking cellulose nanocrystals (CNC) with ammonium zirconium carbonate (AZC) to trap and reconfigure dextran, a model biomacromolecule.
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Affiliation(s)
- A. Sheikhi
- Department of Chemistry
- Centre for Self-Assembled Chemical Structures
- Pulp and Paper Research Centre
- McGill University
- Montreal
| | - T. G. M. van de Ven
- Department of Chemistry
- Centre for Self-Assembled Chemical Structures
- Pulp and Paper Research Centre
- McGill University
- Montreal
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Jafarzadeh A, Fooladseresht H, Nemati M, Assadollahi Z, Sheikhi A, Ghaderi A. Higher circulating levels of chemokine CXCL10 in patients with breast cancer: Evaluation of the influences of tumor stage and chemokine gene polymorphism. Cancer Biomark 2016; 16:545-54. [DOI: 10.3233/cbm-160596] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- A. Jafarzadeh
- Department of Immunology, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
- Department of Immunology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - H. Fooladseresht
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M. Nemati
- Department of Immunology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Z. Assadollahi
- Department of Epidemiology and Biostatistics, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - A. Sheikhi
- Department of Immunology, School of Medicine, Dezful University of Medical Sciences, Dezful, Iran
| | - A. Ghaderi
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
- Shiraz Institute for Cancer Research, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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Sheikhi A, Shakerian M, Giti H, Baghaeifar M, Jafarzadeh A, Ghaed V, Heibor MR, Baharifar N, Dadafarin Z, Bashirpour G. Probiotic Yogurt Culture Bifidobacterium Animalis Subsp. Lactis BB-12 and Lactobacillus Acidophilus LA-5 Modulate the Cytokine Secretion by Peripheral Blood Mononuclear Cells from Patients with Ulcerative Colitis. Drug Res (Stuttg) 2016; 66:300-5. [PMID: 26909690 DOI: 10.1055/s-0035-1569414] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND There are some evidences for the immunomodulation disorders in the response to intestinal microbiota in inflammatory bowel disease. Yogurt is a fermented milk product made with a starter culture consisting of different probiotics which could be colonized in intestine. However, the role of probiotics in the aetiopathogenesis of ulcerative colitis (UC) has not been clarified. To determine how the immune system responds to these bacteria this study was planned. METHODS Bifidobacterium lactis BB-12 (B. lactis) and Lactobacillus acidophilus LA-5 (L. acidophilus) were cultivated on MRS broth. PBMCs of 36 UC patients were separated by Ficoll-Hypaque centrifugation and co-cultured with different concentrations of UV killed bacteria in RPMI-1 640 plus 10% FCS for 48/72 h. IL-10, TGF-β, IFN-γ and TNF-α were measured in supernatant of PBMCs by ELISA. RESULTS Both bacteria significantly augmented IL-10, TGF-β, IFN-γ and TNF-α compared to control (p<0.001). The secretion levels of IL-10 and TGF-β by B. lactis- compared to L. acidophilus-stimulated PBMCs were significantly higher (p<0.05, p<0.01 respectively). The secretion levels of TNF-α and IFN-γ by PBMCs after 72 h were significantly lower compared to 48 h stimulation by B. lactis (p<0.001, p<0.035 respectively). CONCLUSION These data show that both probiotics may trigger the pro- and anti-inflammatory immune response of UC patients. It seems that IL-10/TGF-β uprising by B. lactis could be the reason of TNF-α/IFN-γ reduction. Therefore albeit B. lactis still stimulates the effector Th cells but because of more stimulatory effect on Tregs, it could be a good potential therapeutic candidate for further investigation.
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Affiliation(s)
- A Sheikhi
- Department of Immunology, Faculty of Medicine, Dezful University of Medical Sciences, Dezful, Iran
| | | | - H Giti
- Tehran Chemie Pharmaceutical Company, Tehran, Iran
| | | | - A Jafarzadeh
- Department of Immunology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - V Ghaed
- Department of Immunology, Faculty of Medicine, Dezful University of Medical Sciences, Dezful, Iran
| | - M R Heibor
- Department of Immunology, Faculty of Medicine, Dezful University of Medical Sciences, Dezful, Iran
| | - N Baharifar
- Department of Microbiology, Azad University, Boroujerd, Iran
| | - Z Dadafarin
- Department of Microbiology, Azad University, Arak, Iran
| | - G Bashirpour
- Department of Internal Medicine, School of Medicine, Dezful University of Medical Sciences, Dezful, Iran
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Jafarzadeh A, Jamali M, Mahdavi R, Ebrahimi HA, Hajghani H, Khosravimashizi A, Nemati M, Najafipour H, Sheikhi A, Mohammadi MM, Daneshvar H. Circulating levels of interleukin-35 in patients with multiple sclerosis: evaluation of the influences of FOXP3 gene polymorphism and treatment program. J Mol Neurosci 2014; 55:891-7. [PMID: 25326790 DOI: 10.1007/s12031-014-0443-z] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 10/10/2014] [Indexed: 01/03/2023]
Abstract
The regulatory T (Treg) cells play a major role in the control of the autoimmunity and inflammation, and IL-35 has been described as an immunosuppressive cytokine that is mainly produced by CD4(+)FOXP3(+) Treg cells. The aim of this study was to evaluate the serum levels of IL-35 and a single nucleotide polymorphism (SNP), rs3761548, in FOXP3 gene in patients with multiple sclerosis. The blood samples were collected from 140 multiple sclerosis (MS) patients (including 51 untreated and 89 treated patients) and 140 healthy subjects as a control group. The serum levels of IL-35 were measured by ELISA. The DNA was analyzed for SNP rs3761548 in FOXP3 gene using SSP-PCR. There was no significant difference between untreated MS patients and control group regarding the mean serum levels of IL-35, although this parameter was higher in untreated patients. However, the mean serum level of IL-35 in treated MS patients was significantly higher than that in the control group (P < 0.008). The mean serum levels of IL-35 in patients who were treated with interferon-β, methylprednisolone, or with the both interferon-β and methylprednisolone were significantly higher than that in the healthy group (P < 0.01, P < 0.01, and P < 0.2, respectively). The frequencies of AA and AC genotypes at rs3761548 in the FOXP3 gene were significantly higher in MS group as compared with healthy subjects (P < 0.05). The frequency of CC genotype at rs3761548 was significantly lower in the MS group in comparison with healthy control subjects (P < 0.001). Moreover, the frequency of A allele was significantly higher whereas the frequency of C allele was significantly lower in MS patients in comparison to healthy subjects (P < 0.001). The mean serum level of IL-35 was significantly lower in MS patients or healthy subjects with AA genotype as compared with those with CC genotype at rs3761548 in FOXP3 gene (P < 0.01 and P < 0.001, respectively). These results showed higher serum levels of IL-35 in treated MS patients representing that the benefit effects of treatment may in part performed through the upregulation of the IL-35 production. The SNP rs3761548 may influence the susceptibility to MS disease and the serum levels of IL-35.
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Affiliation(s)
- A Jafarzadeh
- Neurology Research Center, Department of Neurology, Kerman University of Medical Sciences, Kerman, Iran,
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Sheikhi A, Saadati K, Salmani R, Mousavinasab N. P63. Autologous tumour cells and SW742 allogeneic cell line have comparable stimulating effect on PBMCs of gastrointestinal malignant patients in vitro. J Immunother Cancer 2014. [PMCID: PMC4072474 DOI: 10.1186/2051-1426-2-s2-p37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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Sheikhi A, Saadati K, Jafarzadeh A, Karimi H, Mousavinasab N. Augmenting the expression of NKp44 molecule and the natural killer activity in peripheral blood mononuclear cells from patients with malignant colorectal carcinoma. Drug Res (Stuttg) 2013; 64:281-6. [PMID: 24154937 DOI: 10.1055/s-0033-1358465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
OBJECTIVE NKp44 and NKG2D are of the main NK activating receptors involved in recognition and killing of tumors. Here we studied the stimulatory effects of PHA and/or K562 cell line on induction of NKp44 and NKG2D expression and the NK activity of PBMCs from patients with colorectal carcinoma (CRC). MATERIALS AND METHODS Peripheral blood samples were collected from 10 patients with CRC. The peripheral blood mononuclear cells (PBMCs) from each patient received a single stimulation with PHA or double stimulation with PHA and irradiated K562 cell line (iK562). The expression of CD56, NKG2D and NKp44 were detected by flowcytometry. The NK activity of PBMCs against a colorectal carcinoma cell line named as SW742 was determined with 51Cr-release assay. RESULTS Double stimulation of PBMCs with PHA+iK562 significantly augmented the number CD56(+) cells compared to PHA alone and non-stimulated PBMCs (P<0.000, P<0.0000; respectively). A single stimulation of PBMCs with PHA resulted in an enhancement in NKG2D and NKp44 expression from 16.6±3.3% (for non-stimulated PBMCs) to 42±5.6% and 48.1±3.8% respectively (p<0.05). Double stimulation of PBMCs augmented the NKp44 expression significantly in comparison with single stimulation with PHA (73.6±12%, p<0.05). Double stimulation of PBMCs significantly enhanced the NK activity against SW742 target cells compared to single stimulation with PHA (p<0.05). DISCUSSION AND CONCLUSION Our results demonstrated that the mitogen and iK562 exposure to PBMCs can significantly improve NK activity which is co-related to the higher expression of NKp44 and NKG2D. These data may help to improve cancer immunotherapy protocols.
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Affiliation(s)
- A Sheikhi
- Department of Immunology, Faculty of Medicine, Dezful University of Medical Sciences, Dezful, Iran
| | - K Saadati
- Department of Surgery, Zanjan University of Medical Sciences, Zanjan, Iran
| | - A Jafarzadeh
- Department of Immunology, Faculty of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - H Karimi
- Department of Internal Medicine, Dezful University of Medical Sciences, Dezful, Iran
| | - N Mousavinasab
- Department of Social Medicine, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
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Sheikhi A, Jalali M, Gholamian M, Jafarzadeh A, Jannati S, Mousavifar N. Elimination of apoptotic spermatozoa by magnetic-activated cell sorting improves the fertilization rate of couples treated with ICSI procedure. Andrology 2013; 1:845-9. [DOI: 10.1111/j.2047-2927.2013.00140.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Revised: 09/07/2013] [Accepted: 09/09/2013] [Indexed: 11/28/2022]
Affiliation(s)
- A. Sheikhi
- Department of Immunology; Faculty of Medicine; Dezful University of Medical Sciences; Dezful Iran
- Ommulbanin Center for Infertility Treatment; Dezful University of Medical Sciences; Dezful Iran
- Obstetrics and Gynecology Department; Montaserie IVF Center; Mashhad University of Medical Sciences; Mashhad Iran
| | - M. Jalali
- Obstetrics and Gynecology Department; Montaserie IVF Center; Mashhad University of Medical Sciences; Mashhad Iran
| | - M. Gholamian
- Obstetrics and Gynecology Department; Montaserie IVF Center; Mashhad University of Medical Sciences; Mashhad Iran
| | - A. Jafarzadeh
- Department of Immunology; Faculty of Medicine; Rafsanjan University of Medical Sciences; Rafsanjan Iran
| | - S. Jannati
- Ommulbanin Center for Infertility Treatment; Dezful University of Medical Sciences; Dezful Iran
| | - N. Mousavifar
- Obstetrics and Gynecology Department; Montaserie IVF Center; Mashhad University of Medical Sciences; Mashhad Iran
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Sheikhi A, Saadati K, Salmani R, Yahaghi N, Sheikhi A, Siemens DR. In vitro modulation of natural killer activity of human peripheral blood mononuclear cells against prostate tumor cell line. Immunopharmacol Immunotoxicol 2011; 33:700-8. [PMID: 21425925 DOI: 10.3109/08923973.2011.561437] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Natural killer (NK) cells have long been known to be involved in the recognition and lysis of tumor cells but the mechanisms contributing to deficient NK activity in patients with cancer remains unclear. Manipulation of them is likely essential to the success of cancer immunotherapy protocols although optimal stimulation and maintenance of NK activity remains elusive. Here we studied the stimulatory effects of PHA and K562, on NK activity of human peripheral blood mononuclear cells (PBMCs). MATERIALS AND METHODS The NK activity of PBMCs against DU-145 was determined with 51Cr-release assay. The PBMCs were stimulated with PHA, either on one occasion or repetitively on three occasions (1-PHA-PBMC or 3-PHA-PBMC, respectively), and were incubated with irradiated K562 (iK562). The expression of CD56, NKG2D and MICA/B were detected on PBMCs and cell lines with flow cytometry. RESULTS PHA stimulation increased the proportion of CD56+ cells and upregulated NKG2D expression on 1-PHA-PBMC and 3-PHA-PBMC, but co-incubation with iK562 decreased NKG2D expression on 1-PHA-PBMC without change of NKG2D expression on the 3-PHA-PBMC. NK activity of 1-PHA-PBMC appeared to decrease with co-incubation with iK562 compared to a significant increase in activity of 3-PHA-PBMC. A similar increase in interferon-γ (IFN-γ) secretion from 3-PHA-PBMC was demonstrated compared to 1-PHA-PBMC. DISCUSSION AND CONCLUSION Our results demonstrated that varying the mitogen exposure to PBMCs affect the influence of iK562 on NK activity. This effect appeared to be unrelated to the subsequent expression of NKG2D or IFN-γ secretion. These results may be beneficial in the development of future cancer immunotherapy protocols.
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Affiliation(s)
- A Sheikhi
- Department of Immunology, Dezful Faculty of Medical Sciences, Dezful, Khuzestan, Iran.
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Dinarvand R, Moghadam SH, Sheikhi A, Atyabi F. Effect of surfactant HLB and different formulation variables on the properties of poly-D,L-lactide microspheres of naltrexone prepared by double emulsion technique. J Microencapsul 2008; 22:139-51. [PMID: 16019900 DOI: 10.1080/02652040400026392] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [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: 10/23/2022]
Abstract
The aim of this work was to investigate the role of HLB of emulsifier as well as volume of the internal aqueous phase (W(1)) and presence of salt in the external aqueous phase (W(2)) on the morphology, size and encapsulation efficiency of poly(D,L-lactide) microspheres containing naltrexone HCl. PLA microparticles containing naltrexone HCl, an effective opiate antagonist, were prepared by a water-in-oil-in-water emulsification-solvent evaporation procedure. One of the five different emulsifiers: span 80, span 20, tween 85, tween 80 and tween 20, with HLB values from 4-17 were added to W(1). Presence of emulsifier in W(1) resulted in smaller particles with a more dense and uniform internal structure. Incorporation of span 80 (HLB 4.3, suitable for W/O emulsions) yield the highest encapsulation efficiency. Increasing the HLB value to 8 or 11 (span 20 or tween 85) decreased the efficiency of naltrexone HCl-loading. HLB values higher than 15 (tween 80 or tween 20) increased encapsulation efficiency unexpectedly, which could be attributed to migration of these emulsifiers to the O/W(2) interface and modifying the surface properties of microparticles. Increasing the internal water phase volume from 0.2-1.8 ml resulted in larger particle size with poor encapsulation efficiency. Addition of 10% w/w NaCl to the W(2) changed the surface morphology of microspheres from a porous form to a smooth surface. It was shown that, by selecting the appropriate HLB value of emulsifier in W(1), addition of salt to W(2) and controlling the volume of W(1), one can control the encapsulation efficiency, size and morphology of microspheres.
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Affiliation(s)
- R Dinarvand
- Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, IR Iran.
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