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Nguyen R, Doubrovina E, Mousset CM, Jin BY, Okada R, Zhang X, Clavel A, Reyes-Gonzalez JM, Dyomin V, Diaz L, Zhang L, Abbas S, Sun M, Hsieh CM, Ho M, Shern JF, Gulley JL, Hinrichs CS. Cooperative Armoring of CAR and TCR T Cells by T Cell-Restricted IL15 and IL21 Universally Enhances Solid Tumor Efficacy. Clin Cancer Res 2024; 30:1555-1566. [PMID: 37910044 PMCID: PMC11018485 DOI: 10.1158/1078-0432.ccr-23-1872] [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: 06/21/2023] [Revised: 08/09/2023] [Accepted: 10/13/2023] [Indexed: 11/03/2023]
Abstract
PURPOSE Chimeric antigen receptor (CAR) and T-cell receptor (TCR) T-cell therapies are effective in a subset of patients with solid tumors, but new approaches are needed to universally improve patient outcomes. Here, we developed a technology to leverage the cooperative effects of IL15 and IL21, two common cytokine-receptor gamma chain family members with distinct, pleiotropic effects on T cells and other lymphocytes, to enhance the efficacy of adoptive T cells. EXPERIMENTAL DESIGN We designed vectors that induce the constitutive expression of either membrane-tethered IL15, IL21, or IL15/IL21. We used clinically relevant preclinical models of transgenic CARs and TCRs against pediatric and adult solid tumors to determine the effect of the membrane-tethered cytokines on engineered T cells for human administration. RESULTS We found that self-delivery of these cytokines by CAR or TCR T cells prevents functional exhaustion by repeated stimulation and limits the emergence of dysfunctional natural killer (NK)-like T cells. Across different preclinical murine solid tumor models, we observed enhanced regression with each individual cytokine but the greatest antitumor efficacy when T cells were armored with both. CONCLUSIONS The coexpression of membrane-tethered IL15 and IL21 represents a technology to enhance the resilience and function of engineered T cells against solid tumors and could be applicable to multiple therapy platforms and diseases. See related commentary by Ruffin et al., p. 1431.
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Affiliation(s)
- Rosa Nguyen
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Ekaterina Doubrovina
- Duncan and Nancy MacMillan Cancer Immunology and Metabolism Center of Excellence, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Charlotte M. Mousset
- Genitourinary Malignancy Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Benjamin Y. Jin
- Genitourinary Malignancy Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Reona Okada
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Xiyuan Zhang
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Arina Clavel
- Duncan and Nancy MacMillan Cancer Immunology and Metabolism Center of Excellence, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Jeyshka M. Reyes-Gonzalez
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Vadim Dyomin
- Duncan and Nancy MacMillan Cancer Immunology and Metabolism Center of Excellence, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Louis Diaz
- Duncan and Nancy MacMillan Cancer Immunology and Metabolism Center of Excellence, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Ling Zhang
- Center for Immuno-Oncology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Shahroze Abbas
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Ming Sun
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Chao-Ming Hsieh
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Mitchell Ho
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jack F. Shern
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - James L. Gulley
- Center for Immuno-Oncology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Christian S. Hinrichs
- Duncan and Nancy MacMillan Cancer Immunology and Metabolism Center of Excellence, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
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Cusack RW, Hennessy TP, Soh B, McDermott B, Ahern C, O'Connor C, Hennessy TG, Ullah I, Abbas S, Arnous S, Kiernan TJ. Management and outcomes of nonculprit coronary disease in STEMI patients. Ir Med J 2023; 116:814. [PMID: 37606262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
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3
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Hurley B, Gamitto J, Parker E, Salinas S, Gunning G, Buehler E, Abbas S, Shattuck D, Buehler M. Resisting Radiation Through Tardigrade DSUP. Microsc Microanal 2023; 29:2053-2054. [PMID: 37613011 DOI: 10.1093/micmic/ozad067.1062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- B Hurley
- Malden Catholic High School, Malden, MA, USA
| | - J Gamitto
- Malden Catholic High School, Malden, MA, USA
| | - E Parker
- Malden Catholic High School, Malden, MA, USA
| | - S Salinas
- Malden Catholic High School, Malden, MA, USA
| | - G Gunning
- Malden Catholic High School, Malden, MA, USA
| | - E Buehler
- Masconomet Regional Middle School, Boxford, MA, USA
| | - S Abbas
- Malden Catholic High School, Malden, MA, USA
| | - D Shattuck
- St. Joseph School, Wakefield, MA, USA
- Laboratory for Atomistic and Molecular Mechanics, Civil and Environmental Engineering Department, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - M Buehler
- Laboratory for Atomistic and Molecular Mechanics, Civil and Environmental Engineering Department, Massachusetts Institute of Technology, Cambridge, MA, USA
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Talbot H, Hubbard M, Buehler E, Robertson V, Abbas S, Shattuck D, Buehler M. Use of Basalt Fibers on the Moon - An Outreach Collaboration of Middle and High School Researchers with MIT and JEOL USA. Microsc Microanal 2023; 29:2058-2059. [PMID: 37612908 DOI: 10.1093/micmic/ozad067.1065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- H Talbot
- Malden Catholic High School, Malden, MA, USA
| | - M Hubbard
- St. Joseph School, Wakefield, MA, USA
| | - E Buehler
- Spofford Pond School, Boxford MA, USA
| | | | - S Abbas
- Malden Catholic High School, Malden, MA, USA
| | - D Shattuck
- St. Joseph School, Wakefield, MA, USA
- Massachusetts Institute of Technology, Cambridge, MA, USA
| | - M Buehler
- Massachusetts Institute of Technology, Cambridge, MA, USA
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Murray B, Zhang X, Abbas S, Lei H, Jafarah H, Shern JF. Abstract 3563: SWI/SNF-associated DPF1 is a unique transcriptional regulator of malignant peripheral nerve sheath tumors. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-3563] [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: 04/07/2023]
Abstract
Abstract
Background: Malignant peripheral nerve sheath tumors (MPNST) are rare soft tissue sarcomas that are typically therapy resistant and associated with a poor prognosis. Genetic aberrations of the polycomb repressive complex 2 (PRC2) occur in up to 75% of MPNST cases. PRC2 functions antagonistically to SWI/SNF protein complexes, regulating expression of target loci in a dynamic relationship that is critical to normal cellular development and maintenance of cell identity. The consequences of PRC2 loss on chromatin state maintained by SWI/SNF in MPNST is unexplored. Therefore, this study used functional genomics to elucidate the role of SWI/SNF in MPNST.
Methods: To define the transcriptional regulatory role of SWI/SNF complexes in MPNST, SWI/SNF components were targeted via a CRISPR knock-out (KO) screen combined with a single cell RNA sequencing (RNAseq) readout. Genes of interest highlighted by this screen were further investigated using bulk CRISPR RNAseq. Phenotypic effects of the expression of these genes were studied using loss-of-function assays coupled with colony formation assays. SWI/SNF complex heterogeneity was characterized using glycerol gradient sedimentation, co-immunoprecipitation (co-IP), and mass spectrometry experiments.
Results: The investigation of SWI/SNF transcriptional regulation in MPNST highlighted the Double PHD Finger family proteins (DPF1,2,3) as regulating distinct downstream targets. Notably, DPF1 had a unique transcriptional profile compared to other SWI/SNF components. Bulk CRISPR KO RNAseq confirmed these findings and highlighted a specific set of DPF1 target genes including many long non-coding RNAs. The phenotypic role of DPF1 in MPNST was investigated using in vitro siRNA and CRISPR experiments, where DPF1 KO reduced proliferation and viability of MPNST cells in both 2D and 3D cell culture assays. Further, DPF1 was found contribute to anchorage independent cell growth of MPNST cells using soft agar assays. Glycerol gradient sedimentation assays demonstrated that DPF1 co-migrated with core components of a SWI/SNF complex known as canonical BAF (cBAF) and not the alternate GBAF and PBAF SWI/SNF complexes. These findings were further validated using co-immunoprecipitation assays where core the SWI/SNF ATPase, SMARCA4, pulled down DPF1, while components unique to the GBAF and PBAF complexes did not. An ATPase directed proteolysis targeting chimers (PROTAC) was used to therapeutically target cBAF in MPNST cells, reducing their growth and viability. Combination treatment with standard of care chemotherapy synergistically increased the efficacy of this drug.
Conclusions: DPF1 was identified as a unique transcriptional regulator of MPNST cells and acts as a member of the cBAF SWI/SNF complex to play important phenotypic roles in this cancer type.
Citation Format: Bega Murray, Xiyuan Zhang, Shahroze Abbas, Haiyan Lei, Hilda Jafarah, Jack F. Shern. SWI/SNF-associated DPF1 is a unique transcriptional regulator of malignant peripheral nerve sheath tumors. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 3563.
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Affiliation(s)
- Bega Murray
- 1National Cancer Inst. - Bethesda Campus, Bethesda, MD
| | - Xiyuan Zhang
- 1National Cancer Inst. - Bethesda Campus, Bethesda, MD
| | | | - Haiyan Lei
- 1National Cancer Inst. - Bethesda Campus, Bethesda, MD
| | - Hilda Jafarah
- 1National Cancer Inst. - Bethesda Campus, Bethesda, MD
| | - Jack F. Shern
- 1National Cancer Inst. - Bethesda Campus, Bethesda, MD
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6
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Raza A, Charagh S, Abbas S, Hassan MU, Saeed F, Haider S, Sharif R, Anand A, Corpas FJ, Jin W, Varshney RK. Assessment of proline function in higher plants under extreme temperatures. Plant Biol (Stuttg) 2023; 25:379-395. [PMID: 36748909 DOI: 10.1111/plb.13510] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Climate change and abiotic stress factors are key players in crop losses worldwide. Among which, extreme temperatures (heat and cold) disturb plant growth and development, reduce productivity and, in severe cases, lead to plant death. Plants have developed numerous strategies to mitigate the detrimental impact of temperature stress. Exposure to stress leads to the accumulation of various metabolites, e.g. sugars, sugar alcohols, organic acids and amino acids. Plants accumulate the amino acid 'proline' in response to several abiotic stresses, including temperature stress. Proline abundance may result from de novo synthesis, hydrolysis of proteins, reduced utilization or degradation. Proline also leads to stress tolerance by maintaining the osmotic balance (still controversial), cell turgidity and indirectly modulating metabolism of reactive oxygen species. Furthermore, the crosstalk of proline with other osmoprotectants and signalling molecules, e.g. glycine betaine, abscisic acid, nitric oxide, hydrogen sulfide, soluble sugars, helps to strengthen protective mechanisms in stressful environments. Development of less temperature-responsive cultivars can be achieved by manipulating the biosynthesis of proline through genetic engineering. This review presents an overview of plant responses to extreme temperatures and an outline of proline metabolism under such temperatures. The exogenous application of proline as a protective molecule under extreme temperatures is also presented. Proline crosstalk and interaction with other molecules is also discussed. Finally, the potential of genetic engineering of proline-related genes is explained to develop 'temperature-smart' plants. In short, exogenous application of proline and genetic engineering of proline genes promise ways forward for developing 'temperature-smart' future crop plants.
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Affiliation(s)
- A Raza
- College of Agriculture, Fujian Agriculture and Forestry University (FAFU), Fuzhou, China
| | - S Charagh
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Hangzhou, China
| | - S Abbas
- Department of Botany, Faculty of Life Sciences, Government College University, Faisalabad, Pakistan
| | - M U Hassan
- Research Center on Ecological Sciences, Jiangxi Agricultural University, Nanchang, China
| | - F Saeed
- Department of Agricultural Genetic Engineering, Faculty of Agricultural Sciences and Technologies, Nigde Omer Halisdemir University, Nigde, Turkey
| | - S Haider
- Plant Biochemistry and Molecular Biology Lab, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - R Sharif
- Department of Horticulture, School of Horticulture and Landscape, Yangzhou University, Yangzhou, China
| | - A Anand
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, Pusa, New Delhi, India
| | - F J Corpas
- Group of Antioxidants, Free Radicals and Nitric Oxide in Biotechnology, Food and Agriculture, Department of Stress, Development and Signaling in Plants, Estación Experimental del Zaidín, Spanish National Research Council, CSIC, Granada, Spain
| | - W Jin
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - R K Varshney
- State Agricultural Biotechnology Centre, Centre for Crop and Food Innovation, Murdoch University, Murdoch, WA, Australia
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7
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Murray B, Zhang X, Abbas S, Lei H, Jafarah H, Kelly MC, Shern JF. Abstract B011: Single cell CRISPR screen of malignant peripheral nerve sheath tumors identifies SWI/SNF genes of regulatory importance. Cancer Res 2022. [DOI: 10.1158/1538-7445.cancepi22-b011] [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: 12/05/2022]
Abstract
Abstract
Background: Malignant peripheral nerve sheath tumors (MPNST) are rare and aggressive soft tissue sarcomas of the peripheral nervous system which are associated with a poor prognosis. Recurrent genetic mutations of the polycomb repressive complex 2 (PRC2) have been identified in up to 75% of MPNST cases. PRC2 is involved in an intricate epigenetic regulatory network in mammalian cells, where it is known to function antagonistically to the SWI/SNF protein complexes which are commonly associated with active transcription. The regulatory relationship between these complexes is critical to normal cell development and maintenance of cellular identity. However, little is known about how PRC2 aberrations affect this regulatory balance in MPNST. Therefore, this study aims to investigate the role of SWI/SNF in MPNST. Methods: A CRISPR knock-out (KO) screen combined with single cell RNA sequencing (RNAseq) was used to target 44 components of SWI/SNF complexes. The transcriptional regulatory effects of resulting genes of interest were further investigated via bulk CRISPR RNAseq experiments, while phenotypic effects were studied using loss-of-function assays coupled with colony formation assays. The dynamic complex formation was further deciphered using glycerol gradient sedimentation and co-immunoprecipitation (co-IP) assays. Results: Double PHD Fingers 1 gene, DPF1, was identified as a unique transcriptional regulator of MPNST via the single cell CRISPR KO screen. These findings were confirmed using a bulk RNAseq screen, where gene set enrichment analysis suggested DPF1 KO has an inhibitory effect on MPNST cell cycle and proliferation through enrichment of genes involved in the P53 pathway (FDR<0.0001) and the apoptotic pathway (FDR<0.0001). This hypothesis was validated using siRNA and CRISPR KO studies in MPNST cell lines, where DPF1 KO led to reduced proliferation and viability of these cells in both 2D and 3D cell culture assays. Soft agar assays were then used to highlight a role of DPF1 to in anchorage independent cell growth of MPNST cells. We then used glycerol gradient sedimentation assays to confirm DPF1 function as a member of the SWI/SNF complexes in MPNST, where DPF1 was observed to co-migrate with SMARCA4, a core ATPase commonly associated with the BAF complex of the SWI/SNF family. This assay was also used to eliminate DPF1 as a member of the GBAF and PBAF SWI/SNF complexes in MPNST, as we identified distinct sedimentation of DPF1 and proteins unique to these complexes. These findings were further validated using co-immunoprecipitation assays, where SMARCA4 had the ability to pull down DPF1, while components of the GBAF and PBAF complexes did not. Conclusions: DPF1 has been identified as a unique regulator of MPNST cells and acts as a member of the BAF SWI/SNF complex.
Citation Format: Bega Murray, Xiyuan Zhang, Shahroze Abbas, Haiyan Lei, Hilda Jafarah, Michael C. Kelly, Jack F. Shern. Single cell CRISPR screen of malignant peripheral nerve sheath tumors identifies SWI/SNF genes of regulatory importance. [abstract]. In: Proceedings of the AACR Special Conference: Cancer Epigenomics; 2022 Oct 6-8; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2022;82(23 Suppl_2):Abstract nr B011.
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Affiliation(s)
- Bega Murray
- 1National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Xiyuan Zhang
- 1National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Shahroze Abbas
- 1National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Haiyan Lei
- 1National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Hilda Jafarah
- 1National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Michael C. Kelly
- 1National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Jack F. Shern
- 1National Cancer Institute, National Institutes of Health, Bethesda, MD
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Soh BWT, Balfe C, O Brien K, Glasgow J, Forkin A, Sim WH, Muradagha H, Abbas S, Arnous S, Kiernan T. SGLT2i uptake among heart failure patients with reduced ejection fraction: ongoing prescriber hesitancy and how to address this. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.952] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The evidence of mortality benefit from sodium-glucose transport protein 2 inhibitors (SGLT2i) in the management of heart failure with reduced ejection fraction (HFrEF) has been observed since 2019. Its first-line use in HFrEF, regardless of diabetes status, has been recommended by The European Society of Cardiology (ESC) since September 2021. Yet prescriber hesitancy surrounding SGLT2i use is still an under investigated issue resulting in centres falling short of gold-standard care. A simple review of pharmacotherapy pattern can alert clinicians to under prescribing of SGLT2i inhibitors and respond by improving adherence to guidelines.
Purpose
To describe the pharmacotherapy pattern of HFrEF patients attending an outpatient (Heart Failure Support Unit) HFSU in Ireland.
Methods
A retrospective analysis was performed in HFrEF patients actively attending the HFSU. Active attendance was considered a single engagement with the service between 1st January 2021 and 31st December 2021, and patients who have not died, been transferred to another service, or loss to follow-up. Information collected from digital records included patient demographic, comorbidities, baseline investigations, and pharmacotherapy pattern. Sensitivity analysis was performed for patients with type 2 diabetes (T2DM).
Results
156 HFrEF patients were actively attending the HFSU. The mean age was 72.1 (±12.5) years and majority were male 114 (73.1%). The following pharmacotherapy pattern was revealed: angiotensin-converting enzyme inhibitors/ angiotensin II receptor blockers (ACEi/ARBs) 80 (51.3%), ARNi 55 (35.3%), β-blockers 142 (91.0%), mineralocorticoid receptor antagonist (MRA) 58 (37.2%), SGLT2i 9 (5.8%) and Ivabradine 9 (5.8%). Sensitivity analysis for T2DM patients (n=45) reveals a pattern of ACEi/ARBs 46.7%, ARNi 37.8%, β-blockers 95.6%, MRA 42.2%, SGLT2i 20.0% and Ivabradine 8.9%. All 9 instances of SGLT2i use were in T2DM patients. Since identification of SGLT2i under-prescribing, an interim review on 28th February 2022 revealed that total SGLT2i prescription had increased by 19 (211.1%), all of which were outside the T2DM population.
Conclusions
SGLT2i is still under prescribed for HFrEF management and prescriptions have the tendency to be restricted to T2DM patients. Identification of pharmacotherapy pattern can alert clinicians to prescriber hesitancy and increase new SGLT2i prescriptions outside the T2DM population.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- B W T Soh
- University Hospital Limerick , Limerick , Ireland
| | - C Balfe
- University Hospital Limerick , Limerick , Ireland
| | - K O Brien
- University Hospital Limerick , Limerick , Ireland
| | - J Glasgow
- University Hospital Limerick , Limerick , Ireland
| | - A Forkin
- University Hospital Limerick , Limerick , Ireland
| | - W H Sim
- University Hospital Limerick , Limerick , Ireland
| | - H Muradagha
- University Hospital Limerick , Limerick , Ireland
| | - S Abbas
- University Hospital Limerick , Limerick , Ireland
| | - S Arnous
- University Hospital Limerick , Limerick , Ireland
| | - T Kiernan
- University Hospital Limerick , Limerick , Ireland
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Nguyen R, Zhang X, Sun M, Abbas S, Seibert C, Kelly MC, Shern JF, Thiele CJ. Anti-GD2 Antibodies Conjugated to IL15 and IL21 Mediate Potent Antitumor Cytotoxicity against Neuroblastoma. Clin Cancer Res 2022; 28:3785-3796. [PMID: 35802683 PMCID: PMC9444978 DOI: 10.1158/1078-0432.ccr-22-0717] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 03/05/2022] [Revised: 05/18/2022] [Accepted: 07/06/2022] [Indexed: 11/16/2022]
Abstract
PURPOSE Half of the patients with high-risk neuroblastoma who receive GD2-targeted mAb do not achieve long-term remissions. Recently, the antibody hu14.18 has been linked to IL2 (hu14.18-IL2) to enhance its efficacy and shown promising preclinical and clinical activity. We developed two new immunocytokines (IC) by linking two other γc cytokines, IL15 and IL21, to hu14.18. The purpose of this study was to compare hu14.18-IL15 and -IL21 with hu14.18-IL2 in their ability to induce antibody-dependent cell-mediated cytotoxicity (ADCC) against neuroblastoma. EXPERIMENTAL DESIGN We assessed ADCC of hu14.18-IL15 and -IL2 (human cytokines, cross-reactive to mouse) against GD2low and GD2high neuroblastoma cell lines in vitro. T-cell-deficient mice with orthotopic patient-derived xenografts (PDX) and immunocompetent mice with transplantable orthotopic neuroblastoma were used to test all three ICs, including hu14.18-IL21 (murine IL21, not cross-reactive to human). Mechanistic studies were performed using single-cell RNA-sequencing (scRNA-seq). RESULTS hu14.18-IL15 and hu14.18-IL2 mediated equivalent in vitro ADCC by human NK cells. When combined with chemotherapy, all three ICs similarly controlled the growth of PDXs in nude mice with murine NK effector cells. However, hu14.18-IL15 and -IL21 outperformed hu14.18-IL2 in immunocompetent mice with syngeneic neuroblastoma, inducing complete tumor regressions and extending survival. scRNA-seq data revealed an increase in CD8+ T cells and M1 tumor-associated macrophages and decreased regulatory T cells and myeloid-derived suppressor cells in the tumor microenvironment. CONCLUSIONS Hu14.18-IL15 and Hu14.18-IL21 exhibit robust preclinical activity, warranting further consideration for clinical testing in patients with GD2-expressing neuroblastoma.
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Affiliation(s)
- Rosa Nguyen
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- Corresponding author: Rosa Nguyen, Pediatric Oncology Branch, 10 Center Drive, Building 10, Room 1W-5816, Bethesda, MD, USA; phone: 443-902-3243; fax: 301-451-7052;
| | - Xiyuan Zhang
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Ming Sun
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Shahroze Abbas
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Charlie Seibert
- Center for Cancer Research Single Cell Analysis Facility CCR, Cancer Research Technology Program, Frederick National Laboratory, Bethesda, MD, USA
| | - Michael C. Kelly
- Center for Cancer Research Single Cell Analysis Facility CCR, Cancer Research Technology Program, Frederick National Laboratory, Bethesda, MD, USA
| | - Jack F. Shern
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Carol J. Thiele
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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Abbas S, Latif S, Muhamad I, Hesan M, Kormin F. In vitro antioxidant and anticholinesterase activities of ethanolic turmeric crude
extract. Food Res 2022. [DOI: 10.26656/fr.2017.6(4).101] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This study was aimed at exploring the antioxidant and anticholinesterase effect of
ethanolic turmeric crude extract. The antioxidant activity was determined by using the 1,1-
diphenyl-2-picrylhydrazyl (DPPH) free radical-scavenging activity, (2,2'-azino-bis(3-
ethylbenzothiazoline-6-sulfonic acid)) (ABTS) and ferric reducing antioxidant power
(FRAP) values. Ethanolic crude extract of turmeric showed good antioxidant and
anticholinesterase activities (% I); the activity was, 80.2±1.30%, 75.6±1.23% and
10.43±0.28% for ABTS, DPPH and FRAP, respectively, and 69.0±1.85% and
70.5±1.11% for AChE and BChE, respectively. However, the maximum% I for ABTS,
DPPH and FRAP, that is, 87.2±1.34%, 86.0±1.59% and 19.36±0.37 µg FSE, respectively,
were shown by positive control ascorbic acid, and for acetylcholinesterase (AChE) and
butyrylcholinesterase (BChE) inhibition, 86.69±1.24 and 89.3±1.01%, respectively, by
galanthamine. Turmeric provides a potential natural source of bioactive compounds and is
valuable to human health.
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Murray B, Zhang X, Abbas S, Jafarah H, Shern JF. Abstract LB060: Single-cell CRISPR screen of malignant peripheral nerve sheath tumors (MPNST). Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-lb060] [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: 11/16/2022]
Abstract
Abstract
Background: Malignant peripheral nerve sheath tumors (MPNST) are aggressive sarcomas of the peripheral nervous system. Loss of function of the polycomb repressive complex 2 (PRC2) have been identified in up to 80% of MPNST cases, via recurrent genetic mutations in the core components, EED and/or SUZ12. However, the transcriptional mis-regulation incurred by the loss of transcriptional repression in MPNST, through loss of H3K27me3, has yet to be fully deciphered. We hypothesize that PRC2 loss leads to transcriptional regulatory imbalance between key epigenetic regulating complexes in this malignancy, which may contribute to the oncogenesis of this disease. Therefore, this project aims to elucidate the role of the SWI/SNF chromatin remodeling complexes in MPNST, epigenetic regulators known to act antagonistically to PRC2.
Method: This project uses a CRISPR knock out screen combined with a single cell RNA sequencing readout to target 44 known components of the SWI/SNF complexes. This technology enables large scale phenotypic assays, which we leverage to decipher the complicated epigenetic regulatory network within these lesions. Resulting genes of interest were further studied via loss-of-function assays coupled with colony formation assay and chromatin immunoprecipitation DNA sequencing (ChIP-seq) experiments.
Results: This CRISPR screen highlighted core SWI/SNF components, SMARCA4 and SMARCE1, as genes of interest in MPNST. Knockdown of these genes in MPNST cell lines reduced proliferation, indicating a role for these genes in MPNST growth and viability. Further, investigations via soft agar assay found both SMARCA4 and SMARCE1 knock out to decrease the tumorigenic potential of MPNST cells.
The potential dependency of SMARCA4 function in MPNST cells on PRC2 mutation was investigated using a doxycycline-inducible PRC2-restoration MPNST cell line model. ChIP-seq results suggest that loss of PRC2 does not substantially affect the binding of SMARCA4-containing SWI/SNF complexes across the genome.
DPF1, a member of the neuronal-specific SWI/SNF chromatin remodeling complex, was further highlighted as a unique regulator of MPNST transcription via the CRISPR single-cell screen. CRISPR knockdown of this gene in MPNST cell lines has been found to decrease proliferation, while soft agar assay experiments highlighted that DPF1 loss reduces cell tumorigenicity. The unique dependency of this gene observed in MPNST but not in any other cancer subtypes highlights the potential of DPF1 to be a novel and unique therapeutic target in MPNST.
Conclusion: Thus far, our studies have shown that members of the SWI/SNF complex play key roles in the MPNST cell proliferation and tumorigenicity. The function of these complexes in MPNST, however, may be independent of the transcriptional imbalance caused by PRC2 mutation.
Citation Format: Béga Murray, Xiyuan Zhang, Shahroze Abbas, Hilda Jafarah, Jack F. Shern. Single-cell CRISPR screen of malignant peripheral nerve sheath tumors (MPNST) [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr LB060.
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Katz-Summercorn AC, Jammula S, Frangou A, Peneva I, O'Donovan M, Tripathi M, Malhotra S, di Pietro M, Abbas S, Devonshire G, Januszewicz W, Blasko A, Nowicki-Osuch K, MacRae S, Northrop A, Redmond AM, Wedge DC, Fitzgerald RC. Multi-omic cross-sectional cohort study of pre-malignant Barrett's esophagus reveals early structural variation and retrotransposon activity. Nat Commun 2022; 13:1407. [PMID: 35301290 PMCID: PMC8931005 DOI: 10.1038/s41467-022-28237-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 01/14/2022] [Indexed: 12/11/2022] Open
Abstract
Barrett's esophagus is a pre-malignant lesion that can progress to esophageal adenocarcinoma. We perform a multi-omic analysis of pre-cancer samples from 146 patients with a range of outcomes, comprising 642 person years of follow-up. Whole genome sequencing reveals complex structural variants and LINE-1 retrotransposons, as well as known copy number changes, occurring even prior to dysplasia. The structural variant burden captures the most variance across the cohort and genomic profiles do not always match consensus clinical pathology dysplasia grades. Increasing structural variant burden is associated with: high levels of chromothripsis and breakage-fusion-bridge events; increased expression of genes related to cell cycle checkpoint, DNA repair and chromosomal instability; and epigenetic silencing of Wnt signalling and cell cycle genes. Timing analysis reveals molecular events triggering genomic instability with more clonal expansion in dysplastic samples. Overall genomic complexity occurs early in the Barrett's natural history and may inform the potential for cancer beyond the clinically discernible phenotype.
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Affiliation(s)
- A C Katz-Summercorn
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - S Jammula
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - A Frangou
- Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Headington, Oxford, OX3 7BN, UK
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Headington, Oxford, OX3 9DU, UK
| | - I Peneva
- Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Headington, Oxford, OX3 7BN, UK
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Headington, Oxford, OX3 9DU, UK
| | - M O'Donovan
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
- Department of Histopathology, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK
| | - M Tripathi
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
- Department of Histopathology, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK
| | - S Malhotra
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
- Department of Histopathology, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK
| | - M di Pietro
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - S Abbas
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - G Devonshire
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - W Januszewicz
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
- Department of Gastroenterology, Hepatology and Clinical Oncology, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - A Blasko
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - K Nowicki-Osuch
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - S MacRae
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - A Northrop
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - A M Redmond
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - D C Wedge
- Manchester Cancer Research Centre, University of Manchester, Wilmslow Road, Manchester, M20 4GJ, UK
| | - R C Fitzgerald
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK.
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Abbas SR, Khan RT, Shafique S, Mumtaz S, Khan AA, Khan AM, Hassan Z, Hussain SA, Abbas S, Abbas MR, Batool A, Safder MA. Study of resveratrol against bone loss by using in-silico and in-vitro methods. BRAZ J BIOL 2021; 83:e248024. [PMID: 34932613 DOI: 10.1590/1519-6984.248024] [Citation(s) in RCA: 3] [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] [Received: 01/27/2021] [Accepted: 05/29/2021] [Indexed: 11/22/2022] Open
Abstract
By applying the in-silico method, resveratrol was docked on those proteins which are responsible for bone loss. The Molecular docking data between the resveratrol and Receptor activator of nuclear factor-kappa-Β ligand [RANKL] receptors proved that resveratrol binds tightly to the receptors, showed the highest binding affinities of -6.9, -7.6, -7.1, -6.9, -6.7, and -7.1 kcal/mol. According to in-vitro data, Resveratrol reduced the osteoclasts after treating Marrow-Derived Macrophages [BMM] with Macrophage colony-stimulating factor [MCSF] 20ng / ml and RANKL 50ng / ml, with different concentrations of resveratrol (2.5, 10 μg / ml) For 7 days, the cells were treated with MCSF (20 ng / ml) and RANKL (40 ng / ml) together with concentrated trimethyl ether and resveratrol (2.5, 10 μg / ml) within 12 hours. Which, not affect cell survival. After fixing osteoclast cells with formaldehyde fixative on glass coverslip followed by incubation with 0.1% Triton X-100 in PBS for 5 min and after that stain with rhodamine phalloidin staining for actin and Hoechst for nuclei. Fluorescence microscopy was performed to see the distribution of filaments actin [F.actin]. Finally, resveratrol reduced the actin ring formation. Resveratrol is the best bioactive compound for drug preparation against bone loss.
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Affiliation(s)
- S R Abbas
- Karakoram International University, Department of Biological Sciences, Gilgit, Pakistan
| | - R T Khan
- University of Azad Jammu and Kashmir, Department of Botany, Azad Jammu and Kashmir, Pakistan
| | - S Shafique
- University of Poonch, Department of Plant Breeding and Molecular Genetics, Rawalakot, Azad Jammu and Kashmir, Pakistan
| | - S Mumtaz
- Karakoram International University, Department of Biological Sciences, Gilgit, Pakistan
| | - A A Khan
- Bahauddin Zakariya University, College of Agriculture Bahadur Campus, Layyah, Pakistan
| | - A M Khan
- University of Sargodha, Department of Biotechnology, Sargodha, Pakistan
| | - Z Hassan
- Bahauddin Zakariya University, College of Agriculture Bahadur Campus, Layyah, Pakistan
| | - S A Hussain
- Karakoram International University, Department of Biological Sciences, Gilgit, Pakistan
| | - S Abbas
- Karakoram International University, Department of Biological Sciences, Gilgit, Pakistan
| | - M R Abbas
- University of Azad Jammu and Kashmir, Department of Computer Sciences and IT, Muzaffarabad, Pakistan
| | - A Batool
- Virtual University Lahore, Department of Biotechnology, Lahore, Pakistan
| | - M A Safder
- Karakoram International University, Department of Biological Sciences, Gilgit, Pakistan
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Abbas S, Imtiaz-ud-Din, Mehmood M, Raheel A, Ayub R, Zahid M, Tahir MN. Synthesis and Structural Characterization of Bioactive Ferrocenyl Substituted Hydrazones. RUSS J COORD CHEM+ 2021. [DOI: 10.1134/s107032842112006x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Abbas S, Iqbal A, Anjum KM, Sherzada S, Atique U, Khan MKA, Akmal M, Rahman A, Asif AR, Ahmad S, Malik A, Khan SA, Ahmad S, Inayat M. Body composition, growth performance and enzyme activities of Labeo rohita fed different commercial fish feeds. BRAZ J BIOL 2021; 83:e250402. [PMID: 34614125 DOI: 10.1590/1519-6984.250402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 06/07/2021] [Indexed: 11/22/2022] Open
Abstract
We have evaluated the effects of different fish feeds on the body composition, growth, and enzyme activities of Labeo rohita (Rohu). In total, 240 fishes between the average weights of 24.77±2.15g were studied. The treatments were applied in a completely randomized design, with 4 treatments of 60 fishes each. Treatments consisted of four different fish feeds [Oryza (T1), AMG (T2), Aqua (T3), and Supreme (T4)]. Body composition, growth performance, and enzyme activities were evaluated. There was a significant variation in performance of fishes fed with different type of feed; as fishes having Oryza feed showed the highest weight gain, specific growth rate (SGR), and best feed conversion ratio (FCR) as compared to other groups that were considered to be significant (P ≤ 0.05). High net weight gain was obtained in T4 when compared with T2 and T3. FCR value of T4 was less than T1 but higher than T2, T3 and T2, which showed the lowest values. The specific growth rate was recorded as average in T4, but T2 led a high SGR than T3. Similarly, crude protein level and digestive enzymes activity was recorded significantly highest in fed with Oryza (T1) as compared to AMG (T2), Aqua (T3), and Supreme (T4). Water quality parameters were recorded significant in all treatments except pH and DO of treatment (T1), significantly different from other treatments. It was concluded that Rohu (Labeo rohita) could show a promising growth rate and protease enzyme activity when fed with the Oryza feed of 25% protein.
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Affiliation(s)
- S Abbas
- University of Veterinary and Animal Sciences, Department of Fisheries and Aquaculture, Lahore, Pakistan
| | - Asia Iqbal
- University of Veterinary and Animal Sciences, Department of Wildlife and Ecology, Lahore, Pakistan
| | - K M Anjum
- University of Veterinary and Animal Sciences, Department of Wildlife and Ecology, Lahore, Pakistan
| | - S Sherzada
- University of Veterinary and Animal Sciences, Department of Fisheries and Aquaculture, Lahore, Pakistan
| | - U Atique
- University of Veterinary and Animal Sciences, Department of Fisheries and Aquaculture, Lahore, Pakistan.,Chungnam National University, Department of Bioscience and Biotechnology, Daejeon, South Korea
| | - M K A Khan
- University of Okara, Department of Zoology, Okara, Pakistan
| | - M Akmal
- University of Veterinary and Animal Sciences, Department of Fisheries and Aquaculture, Lahore, Pakistan
| | - A Rahman
- University of Veterinary and Animal Sciences, Department of Animal Sciences, Jhang Campus, Jhang, Pakistan
| | - A R Asif
- University of Veterinary and Animal Sciences, Department of Animal Sciences, Jhang Campus, Jhang, Pakistan
| | - S Ahmad
- University of Veterinary and Animal Sciences, Department of Fisheries and Aquaculture, Lahore, Pakistan
| | - A Malik
- University of Veterinary and Animal Sciences, Department of Fisheries and Aquaculture, Lahore, Pakistan
| | - S A Khan
- University of Veterinary and Animal Sciences, Department of Fisheries and Aquaculture, Lahore, Pakistan
| | - S Ahmad
- University of Veterinary and Animal Sciences, Faculty of Animal Production and Technology, Department of Poultry Production, Lahore, Pakistan
| | - M Inayat
- University of Veterinary and Animal Sciences, Department of Fisheries and Aquaculture, Lahore, Pakistan
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Abbas S, Denholm J, Kermode M, Xiaoguang Y, Kane S. Receiving healthcare for drug-resistant TB: a cross-sectional survey from Pakistan. Public Health Action 2021; 11:114-119. [PMID: 34567986 DOI: 10.5588/pha.20.0077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 04/13/2021] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To describe and quantify patients' self-reported experiences of receiving healthcare from Pakistan's Programmatic Management of Drug-Resistant Tuberculosis (PMDT) model of care, and to understand these experiences within the broader context of Pakistan's health system. METHOD This was a cross-sectional survey of patients attending three PMDT clinics in Khyber-Pakhtunkhwa Province in Pakistan. RESULTS The median consultation time at the PMDT clinics was 10 minutes. In their most recent visit to the PMDT clinic, 34.9% of patients spent >40% of their monthly income to access treatment. To specify, 71% of patients reported spending out-of-pocket for ancillary medicines and 44.7% for laboratory tests. In 10.5% of cases, medicines for drug-resistant TB (DR-TB) were dispensed without the patient attending the clinic. Only 43.7% of treatment supporters regularly accompanied patients to the clinic, and 6% supervised the patient's intake of medicines. Disbursement of financial support was irregular in 98.6% of cases. Only 6.2% of patients received their daily injections from a public facility, the rest went elsewhere. CONCLUSION Several shortcomings in PMDT services, including hurried consultations, irregularities in financial support, and gaps in Pakistan's broader health system undermined healthcare experience of patients with DR-TB. To improve health outcomes and patients' care experience these service gaps need to be addressed.
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Affiliation(s)
- S Abbas
- Nossal Institute for Global Health, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - J Denholm
- Department of Infectious Diseases, University of Melbourne, Melbourne, VIC, Australia
| | - M Kermode
- Nossal Institute for Global Health, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - Y Xiaoguang
- School of Public Health, Fudan University, Shanghai, China
| | - S Kane
- Nossal Institute for Global Health, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
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Shahzad A, Sattar A, Ahmad N, Ahmad I, Yousaf M, Blouch R, Abbas S, Nak D, Nak Y, Ray D, Silvia W. Evaluation of synchronization protocols and methods of early pregnancy diagnosis in dairy cattle. S AFR J ANIM SCI 2021. [DOI: 10.4314/sajas.v50i6.4] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The studies aimed to evaluate the pregnancy rate (PR) for timed artificial insemination (TAI) after G7G-Ovsynch, modified G7G-Ovsynch (MG7G-Ovsynch) and Ovsynch protocols and to assess the accuracy of using pregnancy-associated glycoproteins (PAGs) and plasma progesterone (P4) in pregnancy diagnosis compared with ultrasonography (US). In study 1, Holstein cows (n = 37) were bred by TAI following the G7G-Ovsynch protocol (n = 19) or MG7G-Ovsynch (n = 18). Pregnancy was evaluated by US at days 31, 59, and 87 after breeding. The PR was not different for the G7G-Ovsynch and MG7G-Ovsynch. Blood and milk samples were collected on day 3 after insemination and then weekly through day 59 post TAI in cows diagnosed as not pregnant on day 31 and through day 87 in pregnant cows. PAGs were measured using ELISA and P4 by radioimmunoassay (RIA). In the second study, Holstein cows (n = 212) were bred by TAI following G7G-Ovsynch protocol (n = 110) or standard Ovsynch (n = 102). Cows were subjected to pregnancy diagnosis on days 30, 60, and 90. A subset (n = 15 in each group) was subjected to blood and milk samples on days 30, 45, 60, 75, and 90 to measure PAGs and P4. In study 2, PR was not significantly different between synchronization protocols on days 30, 60, and 90. Pregnancy loss averaged 15% between day 30 and day 90. The use of PAGs and P4 proved equally effective in diagnosis of pregnancy. Thus, G7G-Ovsynch was deemed the protocol of choice in postpartum cows, and PAGs assayed in milk or plasma could be used to diagnose pregnancy.
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Abbas S, Latif M, Shafie N, Ghazali M, Abidin N, Mustafa M, Kormin F. A review of antioxidant and anti-acetylcholinesterase activities of Centella asiatica (L.) Urb. for the treatment of Alzheimer’s disease. Food Res 2021. [DOI: 10.26656/fr.2017.5(2).355] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Of many neurodegenerative diseases, Alzheimer’s disease (AD) is the most common
cause of dementia globally, which is still incurable even after decades of extensive
research to find a definite and permanent cure. Accumulation of free radicals and
acetylcholine (ACh) deficiency in the brains of Alzheimer’s patients are considered as the
factors leading to dementia and cognitive problems. This is by mechanisms involving
disturbance in the balance between the amount of free radicals and the antioxidant defense
system along with cholinergic deficit leading to impaired cholinergic neurotransmission.
Currently available anti-AD drug therapy carries only the partial benefit of slowing down
the progression of disease besides having various side effects and, hence, there is a
developing interest to search for new drugs. Plants have always been of special interest in
the field of new drug discovery research by virtue of their enormous biological diversity
and tremendous potential of bioactive molecules. Many herbs are known to ameliorate the
symptoms related to memory and cognitive disorders. Centella asiatica (L.) Urb. is one of
the widely used plants claimed by the traditional system of medicine to have its positive
effects on memory and brain functioning. The objective of this review is to present a
comprehensive account on C. asiatica by summarizing the research until date related to its
medicinal potential with a special focus on antioxidant and anti-acetylcholinesterase (antiAChE) properties reflecting their potential therapeutic application for the treatment of AD.
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Harris GM, Abbas S, Miles MF. GCSscore: an R package for differential gene expression analysis in Affymetrix/Thermo-Fisher whole transcriptome microarrays. BMC Genomics 2021; 22:96. [PMID: 33522903 PMCID: PMC7848880 DOI: 10.1186/s12864-021-07370-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 01/05/2021] [Indexed: 02/07/2023] Open
Abstract
Background Despite the increasing use of RNAseq for transcriptome analysis, microarrays remain a widely-used methodology for genomic studies. The latest generation of Affymetrix/Thermo-Fisher microarrays, the ClariomD/XTA and ClariomS array, provide a sensitive and facile method for complex transcriptome expression analysis. However, existing methods of analysis for these high-density arrays do not leverage the statistical power contained in having multiple oligonucleotides representing each gene/exon, but rather summarize probes into a single expression value. We previously developed a methodology, the Sscore algorithm, for probe-level identification of differentially expressed genes (DEGs) between treatment and control samples with oligonucleotide microarrays. The Sscore algorithm was validated for sensitive detection of DEGs by comparison with existing methods. However, the prior version of the Sscore algorithm and a R-based implementation software, sscore, do not function with the latest generations of Affymetrix/Fisher microarrays due to changes in microarray design that eliminated probes previously used for estimation of non-specific binding. Results Here we describe the GCSscore algorithm, which utilizes the GC-content of a given oligonucleotide probe to estimate non-specific binding using antigenomic background probes found on new generations of arrays. We implemented this algorithm in an improved GCSscore R package for analysis of modern oligonucleotide microarrays. GCSscore has multiple methods for grouping individual probes on the ClariomD/XTA chips, providing the user with differential expression analysis at the gene-level and the exon-level. By utilizing the direct probe-level intensities, the GCSscore algorithm was able to detect DEGs under stringent statistical criteria for all Clariom-based arrays. We demonstrate that for older 3′-IVT arrays, GCSscore produced very similar differential gene expression analysis results compared to the original Sscore method. However, GCSscore functioned well for both the ClariomS and ClariomD/XTA newer microarrays and outperformed existing analysis approaches insofar as the number of DEGs and cognate biological functions identified. This was particularly striking for analysis of the highly complex ClariomD/XTA based arrays. Conclusions The GCSscore package represents a powerful new application for analysis of the newest generation of oligonucleotide microarrays such as the ClariomS and ClariomD/XTA arrays produced by Affymetrix/Fisher. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07370-2.
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Affiliation(s)
- Guy M Harris
- VCU Pharmacology and Toxicology, Richmond, Virginia, 23298, USA
| | - Shahroze Abbas
- VCU Center for the Study of Biological Complexity, Richmond, Virginia, 23298, USA
| | - Michael F Miles
- VCU Pharmacology and Toxicology, Richmond, Virginia, 23298, USA. .,VCU Center for the Study of Biological Complexity, Richmond, Virginia, 23298, USA. .,Department of Pharmacology & Toxicology and Neurology, Virginia Commonwealth University, Richmond, VA, 23298, USA.
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Abbas S, Yousaf M, Ahmad I, Rehman H, Mahmood A, Ashraf S, Blouch R, Shahzad A, Nak Y, Nak D. Evaluation of serum analytes in pregnant and non-pregnant dairy cows as indicators of pregnancy. S AFR J ANIM SCI 2021. [DOI: 10.4314/sajas.v50i5.15] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study was conducted to reveal the dynamics of haematological indicators in pregnant and non-pregnant dairy cows. Sixty multiparous healthy dairy cows were divided into four groups based on the length of time they had been pregnant, namely first, second and third trimesters, and non-pregnant (n=15 each). Blood was collected from each animal, and serum was harvested and stored at -20 °C for biochemical profiling. Concentrations of serum total oxidants (TOC), ceruloplasmin oxidase (CpO) and triiodothyronine (T3) were higher (P <0.05) during the third trimester compared with non-pregnant cows. Serum arylesterase (Ary) concentration was lower (P <0.05) during the second and the third trimesters compared with the non-pregnant cows. The concentration of serum total homocysteine (tHcy) was higher (P <0.05) the third trimester compared with the first and the second trimesters. The concentrations of serum total antioxidants (TAC), paraoxonase 1 (PON1), thyroxine (T4), aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were not different in the pregnant and the non-pregnant cows. Thus, TOC, Ary, CpO, tHcy and T3 could be taken as biological markers to assess the progression of pregnancy and to develop management tools to improve health status during late gestation in dairy cows
Keywords: ceruloplasmin, hepatic enzymes, late gestation, triiodothyronine
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Arheiam A, Abbas S, Ballo L, Borowis E, Rashwan S, El Tantawi M. Prevalence, distribution, characteristics and associated factors of molar-incisor hypo-mineralisation among Libyan schoolchildren: a cross-sectional survey. Eur Arch Paediatr Dent 2021; 22:595-601. [PMID: 33389689 DOI: 10.1007/s40368-020-00594-y] [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] [Received: 07/10/2020] [Accepted: 11/26/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND AND AIM This study aimed to assess the prevalence and clinical status of molar incisor hypomineralisation (MIH) and other enamel defects and associated factors in Libyan children. METHODS A cross-sectional survey of a randomly selected sample of 8- to 10-year-old Libyan school children was conducted in the city of Benghazi, Libya in 2019. The children were assessed for the presence of MIH and enamel defects according to EAPD evaluation criteria. The survey was supplemented by a questionnaire, completed by parents, about potential associated factors occurring before, around and after birth. Association with risk indicators was assessed using chi-square and Mann-Whitney U tests. RESULTS One thousand forty-seven children returned complete questionnaires and attended the clinical examination, with 87% response rate. MIH was the most common form of enamel defects, affecting 162 (15.5%) children. The average number of MIH affected teeth was 3.54 (SD = 1.82). There were no statistically significant associations between the prevalence of MIH and health or demographic characteristics except for the history of early childhood health problems (P = 0.047). CONCLUSIONS In Libyan children, MIH appeared to be the most prevalent type of enamel defects affecting 15.5% of the participants. Although not statistically significant, MIH appeared to be associated with prenatal, perinatal and post-natal challenges.
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Affiliation(s)
- A Arheiam
- Department of Community and Preventive Dentistry, Faculty of Dentistry, University of Benghazi, Benghazi, Libya.
| | - S Abbas
- Department of Basic Medical Sciences, Faculty of Dentistry, University of Benghazi, Benghazi, Libya
| | - L Ballo
- Department of Community and Preventive Dentistry, Faculty of Dentistry, University of Benghazi, Benghazi, Libya
| | - E Borowis
- Department of Basic Medical Sciences, Faculty of Dentistry, University of Benghazi, Benghazi, Libya
| | - S Rashwan
- Department of Community and Preventive Dentistry, Faculty of Dentistry, University of Benghazi, Benghazi, Libya
| | - M El Tantawi
- Department of Pediatric Dentistry and Dental Public Health, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
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Abbas S, Kermode M, Kane S. Strengthening the response to drug-resistant TB in Pakistan: a practice theory-informed approach. Public Health Action 2020; 10:147-156. [PMID: 33437680 DOI: 10.5588/pha.20.0030] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/23/2020] [Indexed: 11/10/2022] Open
Abstract
Background While Pakistan's Programmatic Management of Drug-Resistant Tuberculosis (PMDT) programme, launched in 2010, initially yielded significant gains in treatment outcomes, performance has since plateaued, and in some cases, regressed. Objective To critically investigate why the PMDT programme, well-structured and generously resourced as it is, could not improve upon or sustain this early success and to illustrate the use of practice theory as a framework to analyse functioning of health systems. Method A practice theory-informed ethnographic study was conducted at three PMDT clinics. The analysis drew on 9 months of participant observation and in-depth interviews with 13 healthcare providers and four managers. Results The PMDT model primarily focused on materialities such as infrastructure, drugs and numbers of people tested, and little on developing competencies of the PMDT staff to provide responsive care. This emphasis on materialities, and the linked focus of accountability processes, led the PMDT staff to create meanings that translated into prioritisation of certain easy-to-measure health-care practices at the expense of more difficult-to-measure practices related to responsiveness that are arguably also important for successful patient outcomes. Conclusion A narrow focus on measurable inputs, originating from priorities set at global and national levels, influence frontline care practices with negative consequences for quality of care and patient outcomes. Greater emphasis on improving routine process of care can enhance the effectiveness of the PMDT model of care. Practice theory provides a robust analytical framework to critically interrogate health systems and healthcare provision.
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Affiliation(s)
- S Abbas
- Nossal Institute for Global Health, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - M Kermode
- Nossal Institute for Global Health, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - S Kane
- Nossal Institute for Global Health, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
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Abstract
Turmeric (Curcuma longa) is extensively used as a spice and a coloring agent in Southeast
Asia. Turmeric is used as a traditional remedy for cough, diabetic wounds, hepatic
disorders, and rheumatism due to its antiseptic, antibacterial, and anti-inflammatory
properties. Since the last few decades, extensive work has been done on turmeric and its
constituents to explore its pharmacological actions. Curcumin is the main constituent of turmeric and is well demonstrated for its anti-inflammatory, hypoglycaemic, antioxidant, wound-healing, and antimicrobial activities. The functional neurons of the brain and synapses are lost in neurodegenerative disorders for which there is no permanent cure.
Oxidative damage and inflammation play a role in age-related neurological disorders. The antioxidants have the ability to prevent different neurological disorders. Recent studies have shown that both turmeric and curcumin possess neuroprotective and cognitiveenhancing properties that help to prevent neurodegenerative diseases like Alzheimer's disease and Parkinson’s disease. Different experimental studies have indicated the antioxidant and anti-ageing properties of turmeric and curcumin. Various studies have shown that curcumin acts as a strong barrier against neurological disorders and, hence, it may be a potential drug candidate for the prevention of neurodegenerative diseases. The aim of this review was to present the current pieces of evidence in the literature regarding the neuroprotective effects of turmeric and curcumin.
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Saade C, Siblini L, Karout L, Khalife S, Hilal H, Abbas S, Salman R, Naffaa L. To repeat or not to repeat: Radiologists demonstrated more decisiveness than their fellow radiographers in reducing the repeat rate during mobile chest radiography. Radiography (Lond) 2020; 27:304-309. [PMID: 33023812 DOI: 10.1016/j.radi.2020.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 07/27/2020] [Accepted: 09/01/2020] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Radiologists and radiographers play a complementary role in providing an optimal image quality with decrease radiation dose and proper diagnosis during chest radiographs. We aim Investigate years of experience among radiologists and radiographers on perception of image quality and its impact on repeat rate when evaluating portable pediatric chest radiographs. METHODS IRB approved retrospective study consisted of randomly selected images (n = 131) of pediatric portable chest radiographs. Images were blindly assessed by four radiologists and four radiographers. Readers were asked to assess qualitative and quantitative image quality by rating: image quality, decision to repeat and image technique. All data was compared employing Pearson's Correlation, Visual grading characteristic (VGC) and Cohens' kappa analyses. RESULTS Image quality: Radiologists (88.4%) rated images as excellent significantly more than radiographers (11.6%), and radiographers (90.1%) as poor significantly more than radiologists (9.9%) (p < 0.05). Repeat: Radiologists (57%) decided not to repeat images significantly more than radiographers (43%) (p < 0.05). Image technique: Radiologists rated images as acceptable (65%) and excellent (97.7%) significantly more than radiographers (35% and 2.3% respectively) (p < 0.05), whereas radiographers (84%) assessed image technique as poor significantly more than radiologists (16%) (p < 0.05). VGC: radiographers had slightly better qualitative evaluation of image quality than radiologists. An association between image quality (p < 0.002) and repeat decision (p < 0.044) with years of experience was established when comparing years of experience with image assessment rubric, while no association was noted with image technique (p < 0.9). CONCLUSION Radiologists demonstrated more decisiveness than their fellow radiographers in reducing the repeat rate of portable pediatric chest radiographs. Interestingly, years of experience only seem to affect image technique and image quality assessment among radiologists. IMPLICATIONS FOR PRACTICE Continuous education of radiographers and close collaboration with radiologists is crucial to achieve optimal image quality and low radiation doses.
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Affiliation(s)
- C Saade
- Faculty of Health Sciences, Medical Imaging Sciences, American University of Beirut Medical Center, P.O.Box: 11-0236 Riad El-Solh, Beirut, 1107 2020, Lebanon.
| | - L Siblini
- Faculty of Health Sciences, Medical Imaging Sciences, American University of Beirut Medical Center, P.O.Box: 11-0236 Riad El-Solh, Beirut, 1107 2020, Lebanon.
| | - L Karout
- Diagnostic Radiology Department, American University of Beirut Medical Center, P.O.Box: 11-0236 Riad El-Solh, Beirut, 1107 2020, Lebanon.
| | - S Khalife
- Faculty of Health Sciences, Medical Imaging Sciences, American University of Beirut Medical Center, P.O.Box: 11-0236 Riad El-Solh, Beirut, 1107 2020, Lebanon.
| | - H Hilal
- Faculty of Health Sciences, Medical Imaging Sciences, American University of Beirut Medical Center, P.O.Box: 11-0236 Riad El-Solh, Beirut, 1107 2020, Lebanon.
| | - S Abbas
- Faculty of Health Sciences, Medical Imaging Sciences, American University of Beirut Medical Center, P.O.Box: 11-0236 Riad El-Solh, Beirut, 1107 2020, Lebanon.
| | - R Salman
- Edward B. Singleton Department of Radiology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas, USA.
| | - L Naffaa
- Diagnostic Radiology Department, American University of Beirut Medical Center, P.O.Box: 11-0236 Riad El-Solh, Beirut, 1107 2020, Lebanon.
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Abbas S, Rashid M, Yousaf M, Ashraf S, Rabbani I, Zaneb H, Tahir S, Shahzad A, Rehman H. Effect of maternal yeast feeding on dam performance and serum health biomarkers of Beetal goat kids. S AFR J ANIM SCI 2020. [DOI: 10.4314/sajas.v50i2.11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Supplementation with dietary yeast has improved digestibility and productive performance in ruminants. In this research the primary objective was to appraise the effects of dietary yeast supplementation of female goats during the transition period on milk composition and yield and on production and serum health biomarkers of their kids. Twenty-four Beetal goats (4 ± 1.2 years) were randomly assigned to three groups, which received 0, 5, and 10 grams/animal/day of live dried yeast Saccharomyces cerevisiae for 60 days (30 days pre- and post-partum). All goats were fed 500 grams of concentrate with water and green fodder ad libitum. Milk samples were collected at 7, 14, 21, and 28 days post kidding. Kids were weighed on days 0, 7, 15, 22, and 30, and blood samples were collected on days 15 and 30 for serum metabolites (glucose, urea, cholesterol, non-esterified fatty acids (NEFA), serum total proteins, albumin, globulin, albumin to globulin ratio, serum oxidant and antioxidant activity (malondialdehyde) (MDA) and catalase), and liver enzymes aspartate aminotransferase (AST) and alanine transaminase (ALT) assessment. Milk yield was significantly (P =0.02) higher during the post-partum period in yeast-fed goats. Yeast-fed goats also produced milk containing more fat (P <0.001) and protein (P <0.001) compared with control goats. Birth weight, average daily gain, and serum health biomarkers of the kids were not influenced by the treatments. In conclusion, dietary yeast supplementation resulted in increased production performance of the dams without significant impact on their offspring.Keywords: average daily gain, catalase activity, hepatic enzymes, milk production, Saccharomyces cerevisiae, transition period
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Shafie N, Latif M, Ghazali M, Abbas S, Kormin F. Microwave-assisted extraction optimization of Sabah snake grass (Clinacanthus nutans Lindau) herbal infusion and evaluation of antioxidant and acetylcholinesterase inhibition activity in vitro. Food Res 2020. [DOI: 10.26656/fr.2017.4(5).353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Clinacanthus nutans is a great medicinal herb with high polyphenols content and had been
used in its infusion form to treat illness. In this paper, microwave-assisted extraction of C.
nutans tea infusion was investigated by using central composite design combined with
response surface methodology. The influence factors of microwave power (80 - 800 W);
brewing time duration (0 – 240 s) and extraction time duration (60 s – 300 s) on total
phenolic content (TPC), total flavonoid content (TFC), antioxidant activity (DPPH) and
acetylcholinesterase inhibition activity (AChE) were investigated. The optimum extraction
conditions were determined as follows: microwave power X1, 560 W; brewing duration,
X2, 60 s and extraction time, X3, 240 s. Under this optimal extraction conditions, the
responses were as followed: Total phenolic content (251.58±10.98 mg GAE/L); Total
flavonoid content (102.21±5.16 mg RE/L); DPPH (62.22±0.03%) and acetylcholinesterase
inhibition activity (AChE) of 24.77±0.12%. Results demonstrated that MAE could be used
to extract bioactive constituents having antioxidant and anti-acetylcholinesterase
properties that may benefit in Alzheimer’s disease.
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Niazi H, Abbas S, Noorali A, Pervez M, Fatimi S. OBSTRUCTION OF THE RIGHT VENTRICULAR OUTFLOW TRACT BY AN UNUSUAL MALIGNANCY. Chest 2020. [DOI: 10.1016/j.chest.2020.05.038] [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: 11/29/2022] Open
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Bani Issa W, Al Akour I, Ibrahim A, Almarzouqi A, Abbas S, Hisham F, Griffiths J. Privacy, confidentiality, security and patient safety concerns about electronic health records. Int Nurs Rev 2020; 67:218-230. [PMID: 32314398 DOI: 10.1111/inr.12585] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 02/16/2020] [Accepted: 03/12/2020] [Indexed: 02/02/2023]
Abstract
AIMS This study explored concerns among nurses working in the United Arab Emirates associated with the use of electronic health records, including privacy, confidentiality, security and patient safety. BACKGROUND Given the widespread implementation of electronic health records, there are concerns about data integrity that could jeopardize healthcare quality. Addressing nurses' concerns about data integrity and safety is critical to inform health policies and promote public trust. METHODS Nurses working in healthcare settings in the United Arab Emirates (N = 562) were invited to share their concerns about data integrity and patient safety using a mixed-method approach. Data were collected between January and June 2018 via questionnaires and focus group interviews. Following a survey of nurses' concerns about privacy, confidentiality, security and patient safety in electronic health records, six focus groups were held to gain deeper insights about their concerns. Major themes that emerged from the focus groups were extracted to align with the main sections of the questionnaire. RESULTS Nurses expressed concern over the security of electronic health records (n = 270, 48%). Administrative-related security, inadequate training and access by unauthorized users were the most frequently reported concerns. The main patient safety concerns were associated with non-technological factors, including lack of audit by staff, poor communication with technology vendors and length of time required for documentation. The focus group results reflected similar issues, with an additional theme being inconsistency in data integrity policies. CONCLUSIONS AND IMPLICATIONS FOR NURSING/HEALTH POLICY Frontline nurse managers need to integrate pragmatic policies to support staff compliance with the code of ethics when using online data. Nurses must follow workplace policies that foster reporting of risks to online incident systems to ensure data integrity. A unified health policy based on multidisciplinary partnership is critical to safeguard online data and promote public trust.
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Affiliation(s)
- W Bani Issa
- Department of Nursing, College of Health Sciences, University of Sharjah, Sharjah, United Arab Emirates.,Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - I Al Akour
- Department of Management Information System, University of Sharjah, Sharjah, United Arab Emirates
| | - A Ibrahim
- College of Business, American University in the Emirates, Dubai, United Arab Emirates
| | - A Almarzouqi
- Health Services Administration, University of Sharjah, Sharjah, United Arab Emirates
| | - S Abbas
- Nursing Department - Hospitals Sector, Ministry of Health and Prevention, Sharjah, United Arab Emirates
| | - F Hisham
- Clinical Resource Nurse, Ministry of Health and Prevention, Sharjah, United Arab Emirates
| | - J Griffiths
- CEO Office, Dubai Healthcare Authority, Dubai, United Arab Emirates
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Makhoul J, Ghaoui N, Sleilaty G, Koussa S, Abbas S, Azar C, El Helou J. Restless legs syndrome among multiple sclerosis patients in Lebanon. Mult Scler Relat Disord 2020; 41:101997. [PMID: 32113183 DOI: 10.1016/j.msard.2020.101997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 01/07/2020] [Accepted: 02/07/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Multiple sclerosis (MS) is often associated with fatigue, with an increased prevalence of sleep disorders compared to the general population, notably restless legs syndrome (RLS). The aim of this study was to evaluate the prevalence and severity of RLS as well the co-occurrence of spinal demyelination lesions in patients with MS in Lebanon. METHODS In this cross-sectional study, we consulted the MS database of the Lebanese association against Multiple Sclerosis and sent out questionnaires to 300 MS patients to screen then confirm the presence of RLS. The final sample included 28 MS participants with confirmed RLS. We conducted further questionnaires to collect demographic data, screen for comorbidities, gather spinal MRI results, and evaluate the severity of both diseases (using the EDSS and the JHRLSS). RESULTS Prevalence of RLS was 15% among MS patients in our study. 46.4% of RLS-affected MS patients had spinal cord demyelination lesions on their MRIs. Participants with MRI lesions had a lower severity score on the JHRLSS (p = 0.088). No association was found between the EDSS results and JHRLSS, demographic data, or comorbidities. CONCLUSION Restless legs syndrome is commonly found among patients with multiple sclerosis in Lebanon, is underdiagnosed, and ought to be systematically evaluated for in order to improve the patients' quality of life.
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Affiliation(s)
- J Makhoul
- Department of Neurology, Hôtel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon.
| | - N Ghaoui
- Department of Neurology, Hôtel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - G Sleilaty
- Department of Biostatistics and Epidemiology, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - S Koussa
- Department of Neurology, Hôtel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - S Abbas
- Department of Neurology, Hôtel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - C Azar
- Department of Neurology, Hôtel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - J El Helou
- Department of Neurology, Hôtel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
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Arjunan A, Abbas S, George P. Clinical outcome of early stage breast cancer patients with 1 to 3 positive axillary lymph nodes: A single institution experience. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz098.003] [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: 11/14/2022] Open
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31
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Abbas S, Raza ST, S Mir S, Siddiqi Z, Mahdi F. No association of SNP 313A→G in GSTP1 with nephropathy, hypertension and dyslipidemia in type 2 diabetes mellitus. Br J Biomed Sci 2019; 76:153-155. [PMID: 30883298 DOI: 10.1080/09674845.2019.1595870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- S Abbas
- a Department of Biochemistry , Medicine Era's Lucknow Medical College and Hospital , Lucknow , India
| | - S T Raza
- a Department of Biochemistry , Medicine Era's Lucknow Medical College and Hospital , Lucknow , India
| | - S S Mir
- b Department of Bioengineering , Integral University , Lucknow , India
| | - Z Siddiqi
- c Medicine Era's Lucknow Medical College and Hospital , Lucknow , India
| | - F Mahdi
- a Department of Biochemistry , Medicine Era's Lucknow Medical College and Hospital , Lucknow , India
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Khan HL, Bhatti S, Abbas S, Khan YL, Gonzalez RMM, Aslamkhan M, Gonzalez GR, Aydin HH. Serotonin transporter (5-HTTLPR) genotypes and trinucleotide repeats of androgen receptor exert a combinatorial effect on hormonal milieu in patients with lifelong premature ejaculation. Andrology 2018; 6:916-926. [DOI: 10.1111/andr.12518] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 04/26/2018] [Accepted: 06/01/2018] [Indexed: 12/18/2022]
Affiliation(s)
- H. L. Khan
- Lahore Institute of Fertility and Endocrinology; Hameed Latif Hospital; Lahore Pakistan
| | - S. Bhatti
- Lahore Institute of Fertility and Endocrinology; Hameed Latif Hospital; Lahore Pakistan
- Department of Human Genetics and Molecular biology; University of Health Sciences; Lahore Pakistan
- Department of Medical Education; Rashid Latif Medical College; Lahore Pakistan
| | - S. Abbas
- Lahore Institute of Fertility and Endocrinology; Hameed Latif Hospital; Lahore Pakistan
| | - Y. L. Khan
- Lahore Institute of Fertility and Endocrinology; Hameed Latif Hospital; Lahore Pakistan
| | - R. M. M. Gonzalez
- Centro de investigacion Biomedica de Occidente; IMSS; Uiversidad de Guadalajara; Guadalajara Jalisco Maxico
| | - M. Aslamkhan
- Department of Human Genetics and Molecular biology; University of Health Sciences; Lahore Pakistan
| | - G. R. Gonzalez
- Universidad De Guadalajara CIBO; IMSS; Guadalajara Jalisco Maxico
| | - H. H. Aydin
- Department of Medical Biochemistry; Ege University School of Medicine; Bornova Izmir Turkey
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Siesling S, Abbas S, Van der Palen J, Van der Valk P, Heuvelmans M, Heijmans H, Jobsen J, Struikmans H. Pulmonary complications in breast cancer survivors: Long-term effects of adjuvant treatment? Eur J Cancer 2018. [DOI: 10.1016/s0959-8049(18)30335-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Umair M, Ullah A, Abbas S, Ahmad F, Basit S, Ahmad W. First direct evidence of involvement of a homozygous loss-of-function variant in the EPS15L1
gene underlying split-hand/split-foot malformation. Clin Genet 2018; 93:699-702. [DOI: 10.1111/cge.13152] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 10/03/2017] [Accepted: 10/05/2017] [Indexed: 11/29/2022]
Affiliation(s)
- M. Umair
- Department of Biochemistry, Faculty of Biological Sciences; Quaid-i-Azam University; Islamabad Pakistan
| | - A. Ullah
- Department of Biochemistry, Faculty of Biological Sciences; Quaid-i-Azam University; Islamabad Pakistan
| | - S. Abbas
- Department of Biochemistry, Faculty of Biological Sciences; Quaid-i-Azam University; Islamabad Pakistan
| | - F. Ahmad
- Department of Biochemistry, Faculty of Biological Sciences; Quaid-i-Azam University; Islamabad Pakistan
| | - S. Basit
- Center for Genetics and Inherited Diseases; Taibah University; Al Madinah Saudi Arabia
| | - W. Ahmad
- Department of Biochemistry, Faculty of Biological Sciences; Quaid-i-Azam University; Islamabad Pakistan
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Lawrence MB, Abbas S, Aswal VK. Structure of polyvinyl alcohol-borax ferrogels: a small angle neutron scattering study. J Polym Res 2018. [DOI: 10.1007/s10965-017-1435-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wolstenholme JT, Mahmood T, Harris GM, Abbas S, Miles MF. Intermittent Ethanol during Adolescence Leads to Lasting Behavioral Changes in Adulthood and Alters Gene Expression and Histone Methylation in the PFC. Front Mol Neurosci 2017; 10:307. [PMID: 29018328 PMCID: PMC5622951 DOI: 10.3389/fnmol.2017.00307] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [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: 07/11/2017] [Accepted: 09/12/2017] [Indexed: 01/23/2023] Open
Abstract
Adolescents primarily consume alcohol in binges, which can be particularly harmful to the developing frontal cortex and increase risk for an adult alcohol use disorder. We conducted a study investigating immediate and long lasting changes to the prefrontal cortex (PFC) transcriptome to determine the molecular mechanisms underlying adult ethanol behavioral sensitivity following binge ethanol in adolescence. DBA/2J mice were orally dosed with 4 g/kg ethanol intermittently from day 29 to 42. Adolescent mice were tested for anxiety-like behavior and ethanol sensitivity using the loss of righting reflex task. As adults, mice were tested for cognitive changes using the novel object recognition task, ethanol-induced anxiolysis and ethanol sensitivity. Adolescent binge ethanol altered ethanol sensitivity in young mice and led to lasting memory deficits in the object recognition test and greater ethanol sensitivity in adulthood. Using genomic profiling of transcripts in the PFC, we found that binge ethanol reduced myelin-related gene expression and altered chromatin modifying genes involved in histone demethylation at H3K9 and H3K36. We hypothesize that ethanol's actions on histone methylation may be a switch for future transcriptional changes that underlie the behavioral changes lasting into adulthood.
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Affiliation(s)
- Jennifer T Wolstenholme
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, United States.,VCU Alcohol Research Center, Virginia Commonwealth University, Richmond, VA, United States
| | - Tariq Mahmood
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, United States
| | - Guy M Harris
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, United States
| | - Shahroze Abbas
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, United States
| | - Michael F Miles
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, United States.,VCU Alcohol Research Center, Virginia Commonwealth University, Richmond, VA, United States.,Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, VA, United States
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Shahzad AH, Abbas S. 500 Appraisal of therapeutic efficacy of antibiotics and prostaglandin based protocol in Holstein cattle suffering from acute puerperal metritis (APM). J Anim Sci 2017. [DOI: 10.2527/asasann.2017.500] [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: 11/13/2022] Open
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Yadavalli VSS, Vaidyanathan VS, Chandrasekhar P, Abbas S. Applications of quadrivariate exponential distribution to a three-unit warm standby system with dependent structure. COMMUN STAT-THEOR M 2017. [DOI: 10.1080/03610926.2015.1134576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- V. S. S. Yadavalli
- Department of Industrial and Systems Engineering, University of Pretoria, Pretoria, South Africa
| | | | - P. Chandrasekhar
- Department of Statistics, Loyola College, Chennai, Tamil Nadu, India
| | - S. Abbas
- Department of Industrial and Systems Engineering, University of Pretoria, Pretoria, South Africa
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Abd M, Salah Z, Abbas S, ELKaffas R, Hamza H, Abdul H, Helal A. Early Identification of Subtle Left Ventricular and Atrial Dysfunction among Asymptomatic Survivors of Childhood Myeloid Leukemia: Insights from the Novel Three-Dimensional Speckle Tracking Echocardiography. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1599018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- M. Abd
- Department of Pediatric Cardiology, Saarland University Hospital, Homburg Saarland, Germany
| | - Z. Salah
- Department of Pediatric Cardiology, Cairo University, Cairo, Egypt
| | - S. Abbas
- Department of Pediatric Oncology, Egypt Cancer Network 57357, Cairo, Egypt
| | - R. ELKaffas
- Department of Pediatric Cardiology, Cairo University, Cairo, Egypt
| | - H. Hamza
- Department of Pediatric Cardiology, Cairo University, Cairo, Egypt
| | - H. Abdul
- Department of Pediatric Cardiology, Saarland University Hospital, Homburg Saarland, Germany
| | - A.E.M. Helal
- Department of Pediatric Cardiology, Cairo University, Cairo, Egypt
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Husnoo N, Goonoo MS, Abbas S. Management of aromatase inhibitor-induced bone loss in breast cancer patients. Int J Surg 2016. [DOI: 10.1016/j.ijsu.2016.08.113] [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: 10/20/2022]
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Burckett-St.Laurent DA, Cunningham MS, Abbas S, Chan VW, Okrainec A, Niazi AU. Teaching ultrasound-guided regional anesthesia remotely: a feasibility study. Acta Anaesthesiol Scand 2016; 60:995-1002. [PMID: 26860837 DOI: 10.1111/aas.12695] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 01/03/2016] [Accepted: 01/12/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND Ultrasound-guided regional anesthesia (UGRA) requires acquisition of new skills. Learning requires one-on-one teaching, and can be limited by time and mentor availability. We investigate whether the skills required for UGRA can be developed and subsequently assessed remotely using a novel online teaching platform. This platform was developed at the University of Toronto to teach laparoscopic surgery remotely and has been termed Telesimulation. METHODS Anesthesia Site Chiefs at 10 hospitals across Ontario were sent a letter inviting their anesthesia teams to participate in an UGRA remote training program. Four to five anesthetists from each site were recruited from the first four hospitals expressing interest. Simulation models and ultrasound machines were set up at each location and connected via Skype(™) and web cameras with the Telesimulation center at our hospital. Training consisted of four online sessions and one offline lecture in order to teach an ultrasound-guided supraclavicular block. Participants were evaluated before and after training by on-site and off-site assessors using a validated Checklist and Global Rating Scale (GRS). RESULTS Nineteen staff anesthetists were recruited. Post-training scores were significantly higher across both assessment tools, on-site (P < 0.001) and off-site training locations (P = 0.003). The inter-rater reliability between on-site and remote training site ratings was good for the Checklist (ICC = 0.672, 95% CI: 0.369-0.830) and excellent for the GRS (ICC = 0.847, 95% CI: 0.706-0.921). CONCLUSION This study demonstrates that UGRA can be taught remotely. Future research will focus on comparing this method to on-site teaching and its application in resource-restricted countries.
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Affiliation(s)
- D. A. Burckett-St.Laurent
- Department of Anesthesia and Pain Management; Toronto Western Hospital-University Health Network; Toronto ON Canada
- Temerty/Chang International Centre for Telesimulation and Innovative Medical Education; Toronto Western Hospital-University Health Network; Toronto ON Canada
| | - M. S. Cunningham
- Temerty/Chang International Centre for Telesimulation and Innovative Medical Education; Toronto Western Hospital-University Health Network; Toronto ON Canada
| | - S. Abbas
- Department of Anesthesia and Pain Management; Toronto Western Hospital-University Health Network; Toronto ON Canada
| | - V. W. Chan
- Department of Anesthesia and Pain Management; Toronto Western Hospital-University Health Network; Toronto ON Canada
| | - A. Okrainec
- Temerty/Chang International Centre for Telesimulation and Innovative Medical Education; Toronto Western Hospital-University Health Network; Toronto ON Canada
- Division of General Surgery; Toronto Western Hospital-University Health Network; Toronto ON Canada
| | - A. U. Niazi
- Department of Anesthesia and Pain Management; Toronto Western Hospital-University Health Network; Toronto ON Canada
- Temerty/Chang International Centre for Telesimulation and Innovative Medical Education; Toronto Western Hospital-University Health Network; Toronto ON Canada
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Amir R, Anjum F, Randhawa M, Abbas S, Saeed M. Confiscation of heavy metal residues in cauliflower using washing solutions. Quality Assurance and Safety of Crops & Foods 2016. [DOI: 10.3920/qas2014.0506] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- R.M. Amir
- Department of Food Technology, PMAS-Arid Agriculture University, 46000 Rawalpidi, Pakistan
| | - F.M. Anjum
- National Institute of Food Science and Technology, University of Agriculture, Jail Road Faisalabad, 38000 Faisalabad, Pakistan
| | - M.A. Randhawa
- National Institute of Food Science and Technology, University of Agriculture, Jail Road Faisalabad, 38000 Faisalabad, Pakistan
| | - S. Abbas
- Department of Biosciences, COMSATS Institute of Information Technology, 44000 Islamabad, Pakistan
| | - M.F. Saeed
- Department of Environmental Sciences, COMSATS Institute of Information Technology, 61100 Vehari, Pakistan
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Abbas S, Basyouni W, El-Bayouki K, Abdel-Rahman R. Synthesis and Evaluation of 1-Substituted-Biguanide Derivatives as Anti-Diabetic Agents for Type II Diabetes Insulin Resistant. Drug Res (Stuttg) 2016; 66:377-83. [DOI: 10.1055/s-0042-107349] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- S. Abbas
- Organometallic and Organometalloid Chemistry Department, National Research Centre, Cairo, Egypt
| | - W. Basyouni
- Organometallic and Organometalloid Chemistry Department, National Research Centre, Cairo, Egypt
| | - K. El-Bayouki
- Organometallic and Organometalloid Chemistry Department, National Research Centre, Cairo, Egypt
| | - R. Abdel-Rahman
- Pharmacology Department, National Research Centre, Cairo, Egypt
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Dhole T, Kakkar M, Chaturvedi S, Saxena V, Abbas S, Kumar A, Zia A, Verma S. Persistence of Japanese encephalitis virus infection in healthy children in JE Endemic Area. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.02.405] [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: 11/17/2022] Open
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Feinberg L, Tailor M, Chapireau D, Abbas S. Striking alcohol-induced, traumatic tongue necrosis – an unusual case. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.077] [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: 11/16/2022]
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Lobo R, Cahill C, Blake O, Abbas S, Meany TB, Hennessy T, Kiernan TJ. 13 High sensitive troponin t levels following elective external direct current cardioversion for atrial fibrillation and atrial flutter. Heart 2015. [DOI: 10.1136/heartjnl-2015-308621.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Bannard-Smith J, Abbas S, Ingleby S, Fullwood C, Jones S, Eddleston J. Use of an electronic early warning score and mortality for patients admitted out of hours to a large teaching hospital. Crit Care 2015. [PMCID: PMC4473127 DOI: 10.1186/cc14488] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Degheidy T, Abdelfattah H, Seif A, Albuz FK, Gazi S, Abbas S. Magnetic activated cell sorting: an effective method for reduction of sperm DNA fragmentation in varicocele men prior to assisted reproductive techniques. Andrologia 2014; 47:892-6. [PMID: 25209213 DOI: 10.1111/and.12343] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2014] [Indexed: 01/02/2023] Open
Abstract
Semen parameters of varicocele men have been usually suspected to exhibit higher levels of abnormalities including DNA fragmentation, reactive oxygen species (ROS) and apoptotic markers. Negative correlation between increased level of DNA fragmentation and assisted reproductive techniques (ART) outcome has been studied by several authors. In the current study, we aim to evaluate the possible value of magnetic activated cell sorting (MACs) technology in reduction of DNA fragmentation in infertile varicocele patients prior to ART. Semen samples, collected from 36 varicocele patients, were prepared by density gradient centrifugation (DGC). Every sample was subsequently divided into two aliquots. One aliquot was kept untouched as pre-MACs control while the other aliquot was subjected to MACs technique, for depletion of apoptotic spermatozoa, and serves as post-MACs test. Sperm count, motility and DNA fragmentations were evaluated for both control and test samples. Post-MACs samples showed no deleterious reduction in total sperm motility (80.64 ± 6.97%) compared with control samples (80.97 ± 7.74%) while sperm DNA fragmentations were significantly reduced in post-MACs samples (9.61 ± 5.62%) compared with pre-MACs controls (12.43 ± 6.29%) (P < 0.05). It can be concluded that MACs technique is a simple, noninvasive, technique that can efficiently reduce DNA fragmentation in infertile varicocele patients prior to ART.
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Affiliation(s)
- T Degheidy
- Medical Research Laboratory, Dr Samir Abbas Medical Centers, Jeddah, Saudi Arabia
| | - H Abdelfattah
- Genetic Laboratory, Dr Samir Abbas Medical Centers, Jeddah, Saudi Arabia
| | - A Seif
- Andrology Department, Dr Samir Abbas Medical Centers, Jeddah, Saudi Arabia
| | - F K Albuz
- In vitro Fertilization Department, Dr Samir Abbas Medical Centers, Jeddah, Saudi Arabia
| | - S Gazi
- Andrology Department, Dr Samir Abbas Medical Centers, Jeddah, Saudi Arabia
| | - S Abbas
- Gynecology Department, Dr Samir Abbas Medical Centers, Jeddah, Saudi Arabia
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Abbas S, Goyal S, Cornelius T. Presence of diabetes mellitus in the 'Dawoodi Bohra youth community' in Udaipur, Rajasthan. Indian J Med Res 2014; 140:302-6. [PMID: 25297365 PMCID: PMC4216506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND & OBJECTIVES Diabetes mellitus is a major public health problem worldwide. With the rising incidence of diabetes in India, it becomes particularly relevant to ascertain its prevalence in various ethnic groups. The objective of this study was to find out the presence of diabetes mellitus in the 'Dawoodi Bohra Youth Community' and also to assess the factors responsible for it. METHODS A house-to-house study was conducted and 2179 subjects were questioned randomly; children below 18 yr of age were excluded. A questionnaire was given to each member and questions were also asked to test their level of awareness regarding diabetes which was graded on a 5-pointer scale where 1 meant 'very poor' and 5-'excellent'. Diabetes was diagnosed using GOD-POD (oxidase-peroxidase) method according to the WHO criteria. RESULTS Total number of diabetic subjects found was 246 (11.29%) with a mean age of 60.21±10.91 years. The condition was more common in males (58.94%). The highest prevalence was recorded in the age group of 65-69 yr (22.01%) and none had diabetes in the age group 11-24 yr. Pedigree analysis showed that 109 (44.30%) subjects had at least one affected relative and 23 (9.34%) had at least two diabetic family members; 52 were found to have parents with diabetes. On the 5-pointer scale, the overall care in diabetic subjects was 3.76±0.56 as compared to 2.86±0.60 in non-diabetic subjects (p<0.001). INTERPRETATION & CONCLUSIONS Our results indicated that the marital alliances, familial aggregation and lifestyle could be the major factors which enhanced the chances of diabetes in this community. This research work also reflected poor awareness among these people regarding their health and diseases.
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Affiliation(s)
- S. Abbas
- Department of Biochemistry, RNT Medical College, Udaipur, India
| | - S. Goyal
- Department of Biochemistry, RNT Medical College, Udaipur, India,Reprint requests: Dr Shuchi Goyal, Associate Professor, Department of Biochemistry, RNT Medical College Udaipur 313 001, India e-mail:
| | - T. Cornelius
- Department of Biochemistry, RNT Medical College, Udaipur, India
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