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Lao Y, Quach A, Perveen K, Hii C, Ferrante A. Effects of blood sample storage time, temperature, anti-coagulants and blood stabiliser on lymphocyte phenotyping. Pathology 2024:S0031-3025(24)00052-7. [PMID: 38403560 DOI: 10.1016/j.pathol.2023.11.011] [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: 01/15/2023] [Revised: 10/30/2023] [Accepted: 11/20/2023] [Indexed: 02/27/2024]
Abstract
Medical diagnostic laboratories have come under further scrutiny to ensure quality standards of their service and external quality assurance (EQA) programs involving multiple laboratories have been used to gauge this quality based on a consensus. However, because of the geographical distances within a country or internationally, cell surface marker expressions may change due to time delays and transport temperatures. Attention was given to this issue some decades ago and hence requires a re-evaluation in consideration of updated methods, reagents and instruments for flow cytometry and phenotyping. We have undertaken an extensive study to examine the effects of various conditions on blood storage akin to that experienced by patient samples as well as EQA programs, examining expression of lymphocyte surface markers, CD3, CD4, CD8, CD2, CD19, CD20, CD16/56 and HLA-DR. Assessment of lithium-heparin anticoagulated whole blood showed an increase in percentage of CD3+ and CD8+ T cells and a decrease in CD16/56+ NK cells after storage at room temperature (RT) for 24 and/or 48 h. In comparison, storage at 4°C led to a decrease in percentage of CD4+ and increase in percentage of CD8+ cells. The low temperature also caused an increase in percentage of B cells (CD19+, CD20+). While storage at RT did not alter levels of HLA-DR+ CD3+ T cells, there was a significant increase in percentage of these cells after 48 h. Changes were also seen at both temperatures when EDTA was used as an anti-coagulant. Assessment of blood treated with a stabiliser, normally used in the EQA samples (Streck Cell Preservative), reduced the range of lymphocyte subsets affected, with only CD2+ and CD20+ cells being significantly different at both temperatures, We conclude that 24-48 h storage/transport can affect the percentage of CD3+, CD4+ T cells, CD8+ T cells, B cells, NK cells and HLADR+ T cells which can be minimised by using the blood stabiliser as per EQA programs and we emphasise the need to adopt this in the processing of patients' blood samples.
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Affiliation(s)
- Yunyu Lao
- Department of Immunopathology, SA Pathology at Women's and Children's Hospital, North Adelaide, SA, Australia; Adelaide Medical School, School of Biomedicine and the Robinson Research Institute, Faculty of Health Science, University of Adelaide, Adelaide, SA, Australia
| | - Alex Quach
- Department of Immunopathology, SA Pathology at Women's and Children's Hospital, North Adelaide, SA, Australia; Adelaide Medical School, School of Biomedicine and the Robinson Research Institute, Faculty of Health Science, University of Adelaide, Adelaide, SA, Australia
| | - Khalida Perveen
- Department of Immunopathology, SA Pathology at Women's and Children's Hospital, North Adelaide, SA, Australia; Adelaide Medical School, School of Biomedicine and the Robinson Research Institute, Faculty of Health Science, University of Adelaide, Adelaide, SA, Australia
| | - Charles Hii
- Department of Immunopathology, SA Pathology at Women's and Children's Hospital, North Adelaide, SA, Australia; Adelaide Medical School, School of Biomedicine and the Robinson Research Institute, Faculty of Health Science, University of Adelaide, Adelaide, SA, Australia
| | - Antonio Ferrante
- Department of Immunopathology, SA Pathology at Women's and Children's Hospital, North Adelaide, SA, Australia; Adelaide Medical School, School of Biomedicine and the Robinson Research Institute, Faculty of Health Science, University of Adelaide, Adelaide, SA, Australia; School of Biological Sciences, Faculty of Science, University of Adelaide, Adelaide, SA, Australia.
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Perveen K, Quach A, Stark MJ, Prescott S, Barry SC, Hii CS, Ferrante A. PKCζ activation promotes maturation of cord blood T cells towards a Th1 IFN-γ propensity. Immunology 2023; 170:359-373. [PMID: 37340593 DOI: 10.1111/imm.13674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 06/08/2023] [Indexed: 06/22/2023] Open
Abstract
A significant number of babies present transiently with low protein kinase C zeta (PKCζ) levels in cord blood T cells (CBTC), associated with reduced ability to transition from a neonatal Th2 to a mature Th1 cytokine bias, leading to a higher risk of developing allergic sensitisation, compared to neonates whose T cells have 'normal' PKCζ levels. However, the importance of PKCζ signalling in regulating their differentiation from a Th2 to a Th1 cytokine phenotype propensity remains undefined. To define the role of PKCζ signalling in the regulation of CBTC differentiation from a Th2 to a Th1cytokine phenotype we have developed a neonatal T cell maturation model which enables the cells to develop to CD45RA- /CD45RO+ T cells while maintaining the Th2 immature cytokine bias, despite having normal levels of PKCζ. The immature cells were treated with phytohaemagglutinin, but in addition with phorbol 12-myristate 13-acetate (PMA), an agonist which does not activate PKCζ. This was compared to development in CBTC in which the cells were transfected to express constitutively active PKCζ. The lack of PKCζ activation by PMA was monitored by western blot for phospho-PKCζ and translocation from cell cytosol to the membrane by confocal microscopy. The findings demonstrate that PMA fails to activate PKCζ in CBTC. The data show that CBTC matured under the influence of the PKC stimulator, PMA, maintain a Th2 cytokine bias, characterised by robust IL-4 and minimal interferon gamma production (IFN-γ), and lack of expression of transcriptional factor, T-bet. This was also reflected in the production of a range of other Th2/Th1 cytokines. Interestingly, introduction of a constitutively active PKCζ mutant into CBTC promoted development towards a Th1 profile with high IFN-γ production. The findings demonstrate that PKCζ signalling is essential for the immature neonatal T cells to transition from a Th2 to a Th1 cytokine production bias.
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Affiliation(s)
- Khalida Perveen
- Department of Immunology, SA Pathology at Women's and Children's Hospital, North Adelaide, Australia
- The Robinson Research Institute and School of Medicine, University of Adelaide, Adelaide, Australia
| | - Alex Quach
- Department of Immunology, SA Pathology at Women's and Children's Hospital, North Adelaide, Australia
- The Robinson Research Institute and School of Medicine, University of Adelaide, Adelaide, Australia
| | - Michael J Stark
- The Robinson Research Institute and School of Medicine, University of Adelaide, Adelaide, Australia
- Department of Neonatal Medicine, Women's and Children's Hospital, North Adelaide, Australia
| | - Susan Prescott
- School of Paediatrics, University of Western Australia, Crawley, Australia
- The ORIGINS Project, Telethon Kids Institute and Perth Children's Hospital, Nedlands, Australia
| | - Simon C Barry
- The Robinson Research Institute and School of Medicine, University of Adelaide, Adelaide, Australia
| | - Charles S Hii
- Department of Immunology, SA Pathology at Women's and Children's Hospital, North Adelaide, Australia
- The Robinson Research Institute and School of Medicine, University of Adelaide, Adelaide, Australia
| | - Antonio Ferrante
- Department of Immunology, SA Pathology at Women's and Children's Hospital, North Adelaide, Australia
- The Robinson Research Institute and School of Medicine, University of Adelaide, Adelaide, Australia
- School of Biological Sciences, University of Adelaide, Adelaide, Australia
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Small AG, Perveen K, Putty T, Patel N, Quinn P, Wechalekar MD, Hii CS, Quach A, Ferrante A. Neutrophils Require Activation to Express Functional Cell-Surface Complement Receptor Immunoglobulin. Front Immunol 2022; 13:840510. [PMID: 35317169 PMCID: PMC8934411 DOI: 10.3389/fimmu.2022.840510] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 02/16/2022] [Indexed: 11/13/2022] Open
Abstract
The phagocytosis-promoting complement receptor, Complement Receptor Immunoglobulin (CRIg), is exclusively expressed on macrophages. It has been demonstrated that expression in macrophages could be modulated by inflammatory mediators, including cytokines. This raised the possibility that a major phagocyte, the neutrophil, may also express CRIg following activation with inflammatory mediators. Here we show that resting peripheral blood neutrophil lysates subjected to protein analysis by Western blot revealed a 35 kDa CRIg isoform, consistent with the expression of CRIg mRNA by RT-PCR. By flow cytometry, CRIg was detected intracellularly and in very minor amounts on the cell surface. Interestingly, expression on the cell surface was significantly increased to functional levels after activation with inflammatory mediators/neutrophil activators; N-Formylmethionine-leucyl-phenylalanine, tumor necrosis factor (TNF), Granulocyte-Macrophage Colony stimulating Factor (GM-CSF), bacterial lipopolysaccharide, leukotriene B4 and phorbol myristate acetate. The increase in expression required p38 MAP kinase and protein kinase C activation, as well as intracellular calcium. Neutrophils which were defective in actin microfilament reorganization due to a mutation in ARPC1B or inhibition of its upstream regulator, Rac2 lose their ability to upregulate CRIg expression. Inhibition of another small GTPase, Rab27a, with pharmacological inhibitors prevented the increase in CRIg expression, suggesting a requirement for the actin cytoskeleton and exocytosis. Engagement of CRIg on TNF-primed neutrophils with an anti-CRIg monoclonal antibody increased the release of superoxide and promoted the activation of p38 but not ERK1/ERK2 or JNK MAP kinases. The TNF-induced increase in killing of Staphylococcus aureus was blocked by the anti-CRIg antibody. Adding to the anti-microbial role of CRIg, it was found that GM-CSF priming lead to the release of neutrophil extracellular traps. Interestingly in contrast to the above mediators the anti-inflammatory cytokine IL-10 caused a decrease in basal expression and GM-CSF induced increase in CRIg expression. The data demonstrate that neutrophils also express CRIg which is regulated by inflammatory mediators and cytokines. The findings show that the neutrophil antimicrobial function involving CRIg requires priming as a means of arming the cell strategically with microbial invasion of tissues and the bloodstream.
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Affiliation(s)
- Annabelle G. Small
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Department of Molecular and Biomedical Science, School of Biological Sciences, University of Adelaide, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
- Rheumatology Department, College of Medicine and Public Health, Flinders Medical Centre, Flinders University, Bedfort Park, SA, Australia
| | - Khalida Perveen
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Trishni Putty
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Nikita Patel
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Patrick Quinn
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
- Department of Allergy and Immunology, Women’s and Children’s Health Network, North Adelaide, SA, Australia
| | - Mihir D. Wechalekar
- Rheumatology Department, College of Medicine and Public Health, Flinders Medical Centre, Flinders University, Bedfort Park, SA, Australia
| | - Charles S. Hii
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Alex Quach
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Antonio Ferrante
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Department of Molecular and Biomedical Science, School of Biological Sciences, University of Adelaide, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
- *Correspondence: Antonio Ferrante,
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Perveen K, Quach A, Stark MJ, Prescott SL, Barry SC, Hii CS, Ferrante A. Characterization of the Transient Deficiency of PKC Isozyme Levels in Immature Cord Blood T Cells and Its Connection to Anti-Allergic Cytokine Profiles of the Matured Cells. Int J Mol Sci 2021; 22:ijms222312650. [PMID: 34884454 PMCID: PMC8657888 DOI: 10.3390/ijms222312650] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/15/2021] [Accepted: 11/17/2021] [Indexed: 01/05/2023] Open
Abstract
Cord blood T cells (CBTC) from a proportion of newborns express low/deficient levels of some protein kinase C (PKC) isozymes, with low levels of PKCζ correlating with increased risk of developing allergy and associated decrease in interferon-gamma (IFN-γ) producing T cells. Interestingly, these lower levels of PKCζ were increased/normalized by supplementing women during pregnancy with n-3 polyunsaturated fatty acids. However, at present, we have little understanding of the transient nature of the deficiency in the neonate and how PKCζ relates to other PKC isozymes and whether their levels influence maturation into IFN-γ producing T cells. There is also no information on PKCζ isozyme levels in the T cell subpopulations, CD4+ and CD8+ cells. These issues were addressed in the present study using a classical culture model of neonatal T cell maturation, initiated with phytohaemagglutinin (PHA) and recombinant human interleukin-2 (rhIL-2). Of the isozymes evaluated, PKCζ, β2, δ, μ, ε, θ and λ/ι were low in CBTCs. The PKC isozyme deficiencies were also found in the CD4+ and CD8+ T cell subset levels of the PKC isozymes correlated between the two subpopulations. Examination of changes in the PKC isozymes in these deficient cells following addition of maturation signals showed a significant increase in expression within the first few hours for PKCζ, β2 and μ, and 1–2 days for PKCδ, ε, θ and λ/ι. Only CBTC PKCζ isozyme levels correlated with cytokine production, with a positive correlation with IFN-γ, interleukin (IL)-2 and tumour necrosis factor-alpha (TNF), and a negative association with IL-9 and IL-10. The findings reinforce the specificity in using CBTC PKCζ levels as a biomarker for risk of allergy development and identify a period in which this can be potentially ‘corrected’ after birth.
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Affiliation(s)
- Khalida Perveen
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (K.P.); (A.Q.); (C.S.H.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; (M.J.S.); (S.C.B.)
| | - Alex Quach
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (K.P.); (A.Q.); (C.S.H.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; (M.J.S.); (S.C.B.)
| | - Michael J. Stark
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; (M.J.S.); (S.C.B.)
- Department of Neonatal Medicine, Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia
| | - Susan L. Prescott
- School of Paediatrics and Child Health, University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia;
- The ORIGINS Project, Telethon Kids Institute and Perth Children’s Hospital, 15 Hospital Avenue, Nedlands, WA 6009, Australia
| | - Simon C. Barry
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; (M.J.S.); (S.C.B.)
| | - Charles S. Hii
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (K.P.); (A.Q.); (C.S.H.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; (M.J.S.); (S.C.B.)
| | - Antonio Ferrante
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (K.P.); (A.Q.); (C.S.H.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; (M.J.S.); (S.C.B.)
- School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia
- Correspondence: ; Tel.: +61-8-81617216
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Perveen K, Quach A, McPhee A, Prescott SL, Barry SC, Hii CS, Ferrante A. Cord Blood T Cells Expressing High and Low PKCζ Levels Develop into Cells with a Propensity to Display Th1 and Th9 Cytokine Profiles, Respectively. Int J Mol Sci 2021; 22:ijms22094907. [PMID: 34063174 PMCID: PMC8124775 DOI: 10.3390/ijms22094907] [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] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/26/2021] [Accepted: 04/29/2021] [Indexed: 11/16/2022] Open
Abstract
Low Protein Kinase C zeta (PKCζ) levels in cord blood T cells (CBTC) have been shown to correlate with the development of allergic sensitization in childhood. However, little is known about the mechanisms responsible. We have examined the relationship between the expression of different levels of PKCζ in CBTC and their development into mature T cell cytokine producers that relate to allergy or anti-allergy promoting cells. Maturation of naïve CBTC was initiated with anti-CD3/-CD28 antibodies and recombinant human interleukin-2 (rhIL-2). To stimulate lymphocyte proliferation and cytokine production the cells were treated with Phytohaemagglutinin (PHA) and Phorbol myristate acetate (PMA). Irrespective of the PKCζ levels expressed, immature CBTC showed no difference in lymphocyte proliferation and the production of T helper 2 (Th2) cytokine interleukin-4 (IL-4) and Th1 cytokine, interferon-gamma (IFN-γ), and influenced neither their maturation from CD45RA+ to CD45RO+ cells nor cell viability/apoptosis. However, upon maturation the low PKCζ expressing cells produced low levels of the Th1 cytokines, IFN-γ, IL-2 and tumour necrosis factor-alpha (TNF), no changes to levels of the Th2 cytokines, IL-4, IL-5 and IL-13, and an increase in the Th9 cytokine, IL-9. Other cytokines, lymphotoxin-α (LT-α), IL-10, IL-17, IL-21, IL-22 and Transforming growth factor-beta (TGF-β) were not significantly different. The findings support the view that low CBTC PKCζ levels relate to the increased risk of developing allergic diseases.
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Affiliation(s)
- Khalida Perveen
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (K.P.); (A.Q.); (C.S.H.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia;
| | - Alex Quach
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (K.P.); (A.Q.); (C.S.H.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia;
| | - Andrew McPhee
- Department of Neonatal Medicine, Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia;
| | - Susan L. Prescott
- School of Paediatrics and Child Health, The University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia;
- The ORIGINS Project, Telethon Kids Institute and Perth Children’s Hospital, 15 Hospital Avenue, Nedlands, WA 6009, Australia
| | - Simon C. Barry
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia;
| | - Charles S. Hii
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (K.P.); (A.Q.); (C.S.H.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia;
| | - Antonio Ferrante
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (K.P.); (A.Q.); (C.S.H.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia;
- School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia
- Correspondence: ; Tel.: +61-8-81617216
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Acevedo N, Alashkar Alhamwe B, Caraballo L, Ding M, Ferrante A, Garn H, Garssen J, Hii CS, Irvine J, Llinás-Caballero K, López JF, Miethe S, Perveen K, Pogge von Strandmann E, Sokolowska M, Potaczek DP, van Esch BCAM. Perinatal and Early-Life Nutrition, Epigenetics, and Allergy. Nutrients 2021; 13:724. [PMID: 33668787 PMCID: PMC7996340 DOI: 10.3390/nu13030724] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [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: 12/29/2020] [Revised: 02/08/2021] [Accepted: 02/12/2021] [Indexed: 02/08/2023] Open
Abstract
Epidemiological studies have shown a dramatic increase in the incidence and the prevalence of allergic diseases over the last several decades. Environmental triggers including risk factors (e.g., pollution), the loss of rural living conditions (e.g., farming conditions), and nutritional status (e.g., maternal, breastfeeding) are considered major contributors to this increase. The influences of these environmental factors are thought to be mediated by epigenetic mechanisms which are heritable, reversible, and biologically relevant biochemical modifications of the chromatin carrying the genetic information without changing the nucleotide sequence of the genome. An important feature characterizing epigenetically-mediated processes is the existence of a time frame where the induced effects are the strongest and therefore most crucial. This period between conception, pregnancy, and the first years of life (e.g., first 1000 days) is considered the optimal time for environmental factors, such as nutrition, to exert their beneficial epigenetic effects. In the current review, we discussed the impact of the exposure to bacteria, viruses, parasites, fungal components, microbiome metabolites, and specific nutritional components (e.g., polyunsaturated fatty acids (PUFA), vitamins, plant- and animal-derived microRNAs, breast milk) on the epigenetic patterns related to allergic manifestations. We gave insight into the epigenetic signature of bioactive milk components and the effects of specific nutrition on neonatal T cell development. Several lines of evidence suggest that atypical metabolic reprogramming induced by extrinsic factors such as allergens, viruses, pollutants, diet, or microbiome might drive cellular metabolic dysfunctions and defective immune responses in allergic disease. Therefore, we described the current knowledge on the relationship between immunometabolism and allergy mediated by epigenetic mechanisms. The knowledge as presented will give insight into epigenetic changes and the potential of maternal and post-natal nutrition on the development of allergic disease.
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Affiliation(s)
- Nathalie Acevedo
- Institute for Immunological Research, University of Cartagena, Cartagena 130014, Colombia; (N.A.); (L.C.); (K.L.-C.); (J.F.L.)
| | - Bilal Alashkar Alhamwe
- Institute of Tumor Immunology, Clinic for Hematology, Oncology and Immunology, Center for Tumor Biology and Immunology, Philipps University Marburg, 35043 Marburg, Germany; (B.A.A.); (E.P.v.S.)
- College of Pharmacy, International University for Science and Technology (IUST), Daraa 15, Syria
| | - Luis Caraballo
- Institute for Immunological Research, University of Cartagena, Cartagena 130014, Colombia; (N.A.); (L.C.); (K.L.-C.); (J.F.L.)
| | - Mei Ding
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, 7265 Davos, Switzerland; (M.D.); (M.S.)
- Christine Kühne-Center for Allergy Research and Education, 7265 Davos, Switzerland
- Department of Allergology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Antonio Ferrante
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (A.F.); (C.S.H.); (J.I.); (K.P.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia
- School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia
| | - Holger Garn
- Translational Inflammation Research Division & Core Facility for Single Cell Multiomics, Medical Faculty, Philipps University Marburg, Member of the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center, 35043 Marburg, Germany; (H.G.); (S.M.)
| | - Johan Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands;
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands
| | - Charles S. Hii
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (A.F.); (C.S.H.); (J.I.); (K.P.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia
| | - James Irvine
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (A.F.); (C.S.H.); (J.I.); (K.P.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia
| | - Kevin Llinás-Caballero
- Institute for Immunological Research, University of Cartagena, Cartagena 130014, Colombia; (N.A.); (L.C.); (K.L.-C.); (J.F.L.)
| | - Juan Felipe López
- Institute for Immunological Research, University of Cartagena, Cartagena 130014, Colombia; (N.A.); (L.C.); (K.L.-C.); (J.F.L.)
| | - Sarah Miethe
- Translational Inflammation Research Division & Core Facility for Single Cell Multiomics, Medical Faculty, Philipps University Marburg, Member of the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center, 35043 Marburg, Germany; (H.G.); (S.M.)
| | - Khalida Perveen
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (A.F.); (C.S.H.); (J.I.); (K.P.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia
| | - Elke Pogge von Strandmann
- Institute of Tumor Immunology, Clinic for Hematology, Oncology and Immunology, Center for Tumor Biology and Immunology, Philipps University Marburg, 35043 Marburg, Germany; (B.A.A.); (E.P.v.S.)
| | - Milena Sokolowska
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, 7265 Davos, Switzerland; (M.D.); (M.S.)
- Christine Kühne-Center for Allergy Research and Education, 7265 Davos, Switzerland
| | - Daniel P. Potaczek
- Translational Inflammation Research Division & Core Facility for Single Cell Multiomics, Medical Faculty, Philipps University Marburg, Member of the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center, 35043 Marburg, Germany; (H.G.); (S.M.)
| | - Betty C. A. M. van Esch
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands;
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands
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Krummenacher M, Perveen K, Ferrante A, Hissaria P. The lymphocyte transformation test, flow cytometry and HLA typing in vancomycin induced dress: A case series from South Australia. Pathology 2020. [DOI: 10.1016/j.pathol.2020.01.152] [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: 11/27/2022]
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Munawara U, Perveen K, Small AG, Putty T, Quach A, Gorgani NN, Hii CS, Abbott CA, Ferrante A. Human Dendritic Cells Express the Complement Receptor Immunoglobulin Which Regulates T Cell Responses. Front Immunol 2019; 10:2892. [PMID: 31921153 PMCID: PMC6914870 DOI: 10.3389/fimmu.2019.02892] [Citation(s) in RCA: 10] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 11/25/2019] [Indexed: 01/09/2023] Open
Abstract
The B7 family-related protein V-set and Ig containing 4 (VSIG4), also known as Z39Ig and Complement Immunoglobulin Receptor (CRIg), is the most recent of the complement receptors to be identified, with substantially distinct properties from the classical complement receptors. The receptor displays both phagocytosis-promoting and anti-inflammatory properties. The receptor has been reported to be exclusively expressed in macrophages. We now present evidence, that CRIg is also expressed in human monocyte-derived dendritic cells (MDDC), including on the cell surface, implicating its role in adaptive immunity. Three CRIg transcripts were detected and by Western blotting analysis both the known Long (L) and Short (S) forms were prominent but we also identified another form running between these two. Cytokines regulated the expression of CRIg on dendritic cells, leading to its up- or down regulation. Furthermore, the steroid dexamethasone markedly upregulated CRIg expression, and in co-culture experiments, the dexamethasone conditioned dendritic cells caused significant inhibition of the phytohemagglutinin-induced and alloantigen-induced T cell proliferation responses. In the alloantigen-induced response the production of IFNγ, TNF-α, IL-13, IL-4, and TGF-β1, were also significantly reduced in cultures with dexamethasone-treated DCs. Under these conditions dexamethasone conditioned DCs did not increase the percentage of regulatory T cells (Treg). Interestingly, this suppression could be overcome by the addition of an anti-CRIg monoclonal antibody to the cultures. Thus, CRIg expression may be a control point in dendritic cell function through which drugs and inflammatory mediators may exert their tolerogenic- or immunogenic-promoting effects on dendritic cells.
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Affiliation(s)
- Usma Munawara
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,College of Science and Engineering, Flinders University, Bedford Park, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Khalida Perveen
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Annabelle G Small
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Trishni Putty
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Alex Quach
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Nick N Gorgani
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Charles S Hii
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Catherine A Abbott
- College of Science and Engineering, Flinders University, Bedford Park, SA, Australia
| | - Antonio Ferrante
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
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9
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Jamil Z, Perveen K, Malik R, Avesi L. Predictive accuracy of anti mullerian hormone as indicator of ovarian follicle loss in cyclophosphamide treated mice. J PAK MED ASSOC 2017; 67:1470-1475. [PMID: 28955058] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To evaluate the strength of anti-mullerian hormone in reflecting the stages of ovarian toxicity-induced by cyclophosphamide. METHODS This study was conducted in December 2014 and comprised female mice that were divided into four groups: group A served as control, group B received three weekly injections of cyclophosphamide, group C was co administered alpha-tocopherol along with cyclophosphamide, while group D solely received alpha-tocopherol. The ovaries were evaluated for follicular dynamics, and anti-mullerian hormone was assessed using mouse enzyme-linked immunosorbent assay kit. The data was analysed using SPSS 19. RESULTS There were 40 mice in the study. Histological analysis revealed severely reduced ovarian reserve in group B(p<0.01).In group C alpha-tocopherol conserved the ovarian reserve to near normal, thus follicle count was significantly higher than group B (p<0.05). However, this moderate reduction was still lower than the controls (p<0.01). Furthermore, the number of corpus lutea and atretic follicles were significantly higher in groups B and C (p<0.01). Regarding hormonal analyses in comparison to controls, anti-mullerian hormone levels were low in group B (p<0.01), while group C reported an insignificant fall in serum anti-mullerian hormone levels (p=0.101). CONCLUSIONS There was substantial evidence that anti-mullerian hormone monitoring during chemotherapy administration may fulfil the criteria of earliest diagnostic indicator of secondary infertility.
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Hanif F, Perveen K, Simjee S. Verapamil potentiates temozolomide anticancer efficacy through the intrinsic apoptotic pathway in human glioblastoma cells. Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30235-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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11
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Amjad Z, Yasmin T, Ashraf I, Perveen K, Mirza T, Shoro AA. Lead-induced morphometric changes in the kidneys of albino rats ameliorated by ginkgo biloba extract (EGb 761). J PAK MED ASSOC 2017; 67:58-65. [PMID: 28065956] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To observe the effects of ginkgo biloba extract on lead-induced morphometric changes in the kidneys of albino rats. METHODS This randomised controlled study was conducted at the Institute of Basic Medical Sciences, Dow University of Health Sciences, Karachi, from April 2009 to March 2010, and comprised male Wistar albino rats weighing between 150-180 gm who were randomly divided into three equal groups, A, B and C. These were further split into subgroups 1, 2, 3 and 4 according to the duration of the experiment (one, two, four and six weeks). Group A rats were given 1 ml normal saline intraperitoneally daily, group B rats were given lead acetate 8mg/kg intraperitoneally daily, while group C animals received 100mg/kg ginkgo biloba extract orally along with 8mg/kg lead acetate injection. The animals were sacrifised at the end of the prescribed period, and kidneys were retrieved, fixed, stained and examined under light microscope. SPSS 16 was used for data analysis. RESULTS Of the 120 rats, there were 40(33.3%) in each group. Time-dependent deterioration was observed in the histological architecture of kidneys in group B animals compared to the group A animals, whereas less marked changes were observed in the protected group C animals. In group B animals, the diameter of proximal convoluted tubules increased, the number of proximal convoluted tubules and their nuclei decreased, whereas diameter of the nuclei decreased after an initial increase during the first and second weeks. These parameters remained largely undisturbed in group A animals, whereas changes in group C animals were comparable with those in the controlled group A animals. CONCLUSIONS Ginkgo biloba extract had a protective effect on lead-induced morphometric changes in the kidneys of albino rats.
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Affiliation(s)
- Zaheer Amjad
- Department of Anatomy, Sindh Medical College, Jinnah Sindh Medical University, Karachi, Pakistan
| | - Talat Yasmin
- Department of Anatomy, Sindh Medical College, Jinnah Sindh Medical University, Karachi, Pakistan
| | - Irfan Ashraf
- Department of Anatomy, Sindh Medical College, Jinnah Sindh Medical University, Karachi, Pakistan
| | - Khalida Perveen
- Department of Anatomy, Sindh Medical College, Jinnah Sindh Medical University, Karachi, Pakistan
| | - Talat Mirza
- Department of Pathology, Dow International Medical College, Dow University of Health Sciences, Karachi, Pakistan
| | - Amir Ali Shoro
- Department of Anatomy, Liaquat National Medical College, Karachi, Pakistan
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12
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Jamil Z, Perveen K, Malik R, Avesi L. Serum anti-mullerian hormone: Correlation with the ovarian follicular dynamics in healthy mice. J PAK MED ASSOC 2016; 66:1084-1088. [PMID: 27654725] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To evaluate the relationship between serum anti-Mullerian hormone and follicular dynamics in mice. METHODS This experimental study was conducted in November, 2014 at the Dow University of Health Sciences, Karachi, and comprised laboratory-bred albino mice. They were sacrifised under anaesthesia and blood was collected via cardiac puncture to assess anti-Mullerian hormone while ovaries were collected for morphometric analyses. SPSS 19 was used for data analysis. RESULTS There were 20 mice with a mean weight of 25±1.89 grams, while weight of the ovaries obtained from these mice was 9.6±0.92mg. The mean serum anti-Mullerian hormone was 29.89±9.7ng/ml. On average, there were 87.8+13.54 primordial follicles, 51.85±8.36 primary, 20.35±5.57 secondary, 11.30±3.38 early antral and 3.05 ± 1.27 late antral follciles (p<0.001; p=0.06).. CONCLUSIONS Association of anti-Mullerian hormone with follicle dynamics reflected its role as a true ovarian reserve marker. Its assessment was of great significance in infertile women as well as young patients receiving chemotherapy.
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Affiliation(s)
- Zehra Jamil
- Bilogical and Biomedical Sciences, Aga Khan University, Karachi, Pakistan
| | - Khalida Perveen
- Department of Anatomy, Dow University of Health Sciences, Karachi
| | - Rabia Malik
- Bilogical and Biomedical Sciences, Aga Khan University, Karachi, Pakistan
| | - Lubna Avesi
- Department of Histopathology, Dow University of Health Sciences, Karachi, Pakistan
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13
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Shahab N, Perveen K, Hussain M. Sticking to traditions: Anatomy education and research in Pakistan. Anat Sci Educ 2016; 9:101-102. [PMID: 26313155 DOI: 10.1002/ase.1562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 07/31/2015] [Indexed: 06/04/2023]
Affiliation(s)
- Nazia Shahab
- Department of Anatomy, Dow International Medical College, Dow University of Health Sciences, Karachi, Pakistan
| | - Khalida Perveen
- Department of Anatomy, Dow International Medical College, Dow University of Health Sciences, Karachi, Pakistan
| | - Mushtaq Hussain
- Bioinformatics and Molecular Medicine Laboratory, Dow Research Institute of Biotechnology and Biomedical Sciences, Dow University of Health Sciences, Karachi, Pakistan
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Bukhari NAW, Siddique I, Perveen K, Siddiqui I, Alwahibi MS. Synthetic seed production and physio-biochemical studies in Cassia angustifolia Vahl. - a medicinal plant. Acta Biol Hung 2014; 65:355-67. [PMID: 25194738 DOI: 10.1556/abiol.65.2014.3.11] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Synthetic seed technology is an alternative to traditional micropropagation for production and delivery of cloned plantlets. Synthetic seeds were produced by encapsulating nodal segments of C. angustifolia in calcium alginate gel. 3% (w/v) sodium alginate and 100 mM CaCl2 · 2H2O were found most suitable for encapsulation of nodal segments. Synthetic seeds cultured on half strength Murashige and Skoog medium supplemented with thidiazuron (5.0 μM) + indole-3-acetic acid (1.0 μM) produced maximum number of shoots (10.9 ± 0.78) after 8 weeks of culture exhibiting (78%) in vitro conversion response. Encapsulated nodal segments demonstrated successful regeneration after different period (1-6 weeks) of cold storage at 4 °C. The synthetic seeds stored at 4 °C for a period of 4 weeks resulted in maximum conversion frequency (93%) after 8 weeks when placed back to regeneration medium. The isolated shoots when cultured on half strength Murashige and Skoog medium supplemented with 1.0 μM indole-3-butyric acid (IBA), produced healthy roots and plantlets with well-developed shoot and roots were successfully hardened off in plastic pots containing sterile soilrite inside the growth chamber and gradually transferred to greenhouse where they grew well with 85% survival rate. Growth performance of 2 months old in vitro-raised plant was compared with in vivo seedlings of the same age. Changes in the content of photosynthetic pigments, net photosynthetic rate (PN), superoxide dismutase and catalase activity in C. angustifolia indicated the adaptation of micropropagated plants to ex vitro conditions.
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Affiliation(s)
- N A W Bukhari
- King Saud University Department of Botany and Microbiology, College of Science, Female Centre for Scientific and Medical Colleges P.O. Box 22452 Riyadh 11495 Saudi Arabia
| | - Iram Siddique
- King Saud University Department of Botany and Microbiology, College of Science, Female Centre for Scientific and Medical Colleges P.O. Box 22452 Riyadh 11495 Saudi Arabia
| | - K Perveen
- King Saud University Department of Botany and Microbiology, College of Science, Female Centre for Scientific and Medical Colleges P.O. Box 22452 Riyadh 11495 Saudi Arabia
| | - I Siddiqui
- King Saud University Department of Botany and Microbiology, College of Science, Female Centre for Scientific and Medical Colleges P.O. Box 22452 Riyadh 11495 Saudi Arabia
| | - M S Alwahibi
- King Saud University Department of Botany and Microbiology, College of Science, Female Centre for Scientific and Medical Colleges P.O. Box 22452 Riyadh 11495 Saudi Arabia
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15
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Abstract
The emergence of pan-resistance in bacterial pathogens poses a threat to human health. Carbapenem-resistant Acinetobacter baumannii has emerged as a serious challenge, causing nosocomial infection and community-acquired outbreaks in hospitals globally, including in Pakistan. We collected 90 Acinetobacter isolates from patients with secondary or nosocomial infections from different hospitals in Pakistan and screened for carbapenem-resistant strains. Of the 90 isolates, 59 were resistant to carbapenems. Among oxacillinase -encoding genes, blaOXA-51-like was common in all isolates, including in combination with blaOXA-23-like in 14 isolates; however, blaOXA-24-like and blaOXA-58-like were completely absent. Among metallo-β-lactamase-encoding genes, only blaNDM-1 was found in one isolate, while the other three genes, blaIMP, blaVIM and blaSIM, were completely absent. None of the isolates was found to harbour the blaCTX-M gene. The isolates were also tested for susceptibilities to a panel of different antibiotics belonging to several classes. Of all the drugs tested, tigecycline was the most effective with 80 % sensitivity amongst isolates, followed by colistin with 50 % sensitivity. Three categories of resistance were found in these isolates: extreme drug resistance in 26, pan-drug resistance in 19 and multidrug resistance in 87 isolates. The isolates exhibited a high resistance to cephalosporins, trimethoprim-sulfamethoxazole and β-lactam antibiotics, followed by tetracycline and β-lactam/β-lactam inhibitor combination, fluoroquinolone and aminoglycosides. The results show a prominent level of antibiotic-resistance phenotypes in A. baumannii and strongly suggest the need for full-scale national surveillance of carbapenem-resistant A. baumannii with particular emphasis on the newly identified NDM-1 (New Delhi metallo-β-lactamase-1).
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Affiliation(s)
- Badrul Hasan
- Section of Clinical Microbiology and Infectious Diseases, Department of Medical Sciences, Uppsala University, SE-751 85 Uppsala, Sweden
| | - Khalida Perveen
- Department of Microbiology, Quaid-i-Azam University, Islamabad, 42530 Pakistan
| | - Björn Olsen
- Section of Clinical Microbiology and Infectious Diseases, Department of Medical Sciences, Uppsala University, SE-751 85 Uppsala, Sweden
| | - Rabaab Zahra
- Department of Microbiology, Quaid-i-Azam University, Islamabad, 42530 Pakistan
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Siddique I, Abdullwahab Bukhari N, Perveen K, Siddiqui I, Anis M. Pre-culturing of nodal explants in thidiazuron supplemented liquid medium improves in vitro shoot multiplication of Cassia angustifolia. Acta Biol Hung 2013; 64:377-84. [PMID: 24013898 DOI: 10.1556/abiol.64.2013.3.10] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
An in vitro propagation system for Cassia angustifolia Vahl. has been developed. Due to the presence of sennosides, the demand of this plant has increased manyfold in global market. Multiple shoots were induced by culturing nodal explants excised from mature plants on a liquid Murashige and Skoog [8] medium supplemented with 5-100 μM of thidiazuron (TDZ) for different treatment duration (4, 8, 12 and 16 d). The optimal level of TDZ supplemented to the culture medium was 75 μM for 12 d induction period followed by subculturing in MS medium devoid of TDZ as it produced maximum regeneration frequency (87%), mean number of shoots (9.6 ± 0.33) and shoot length (4.4 ± 0.46 cm) per explant. A culture period longer than 12 d with TDZ resulted in the formation of fasciated or distorted shoots. Ex vitro rooting was achieved when the basal cut end of regenerated shoots was dipped in 200 μM indole-3-butyric acid (IBA) for half an hour followed by their transplantation in plastic pots filled with sterile soilrite where 85% plantlets grew well and all exhibited normal development. The present findings describe an efficient and rapid plant regeneration protocol that can further be used for genetic transformation studies.
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Affiliation(s)
- I Siddique
- King Saud University Department of Botany and Microbiology, College of Science, Female Centre for Scientific and Medical Colleges P.O. Box 22452 Riyadh 11495 Saudi Arabia
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Perveen K, Haseeb A, Shukla P. Effect of Sclerotinia sclerotiorum on the disease development, growth, oil yield and biochemical changes in plants of Mentha arvensis. Saudi J Biol Sci 2010; 17:291-4. [PMID: 23961091 PMCID: PMC3730953 DOI: 10.1016/j.sjbs.2010.05.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2010] [Revised: 05/24/2010] [Indexed: 12/01/2022] Open
Abstract
Experiment was carried out to determine the effect of Sclerotinia sclerotiorum on the disease development, growth, oil yield and biochemical changes in the plants of Mentha arvensis. With the increase in initial inoculum levels of S. sclerotiorum a corresponding decrease in plant fresh and dry weights were recorded. The maximum reduction in the shoot-roots/suckers fresh weight and shoot-roots/suckers dry weights (39.8%, 43.6%, 40.3% and 42.9%), respectively, was observed at the highest initial inoculum level of 12 g fungal mycelium/5 kg soil as compared to uninoculated control. The infection of roots and suckers due to S. sclerotiorum increased with increasing initial inoculum levels. At the lowest initial inoculum (1.0 g mycelium/5 kg soil), infection was observed 18.0% and at the highest (12 g mycelium/5 kg soil), it was 80.2%. Significant (P ⩽ 0.01) reduction in oil yield, total chlorophyll, total phenol and total sugar content of M. arvensis plants was observed at the lowest inoculum level as compared to uninoculated control.
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Affiliation(s)
- K. Perveen
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - A. Haseeb
- Department of Plant Protection, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, India
| | - P.K. Shukla
- Mushroom Laboratory, Department of Plant Pathology, N.D. University of Agriculture and Technology, Faizabad 224229, India
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Rafique M, Khan N, Perveen K, Naqvi A. The effects of lead and zinc on the quality of semen of albino rats. J Coll Physicians Surg Pak 2010; 19:510-3. [PMID: 19651015 DOI: 08.2009/jcpsp.510513] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 05/14/2008] [Accepted: 03/05/2009] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To determine the effects of lead and zinc administration on the quality of semen of albino rats. STUDY DESIGN Experimental study. PLACE AND DURATION OF STUDY Basic Medical Sciences Institute, Jinnah Postgraduate Medical Centre, Karachi, from August 2003 to December 2005. METHODOLOGY Sixty adult albino rats selected for the study were divided into three groups, group A received injection normal saline 1 ml intraperitoneally daily for 8 weeks. Group B received lead chloride in a dose of 10 mg/kg body weight intraperitoneally daily. Group C received lead chloride in a dose of 10 mg/kg body weight and zinc chloride in a dose of 1 mg/kg body weight intraperitoneally daily. On the day of completion of treatment, the animals were sacrificed; epididymis was used for semen analysis. Student's t-test was used to determinate significance; the p-value < 0.05 was taken as significant. RESULTS The number of sperms was 7.3, 1.7 and 6.6 million cells/ml in groups A, B and C respectively. Sperm's count decreased by 87% in group B (p < 0.001, CI 4117082.4 - 6965747.6) as compared to group A. Compared with group C, the sperm's count was decreased to 75% (p < 0.001, CI -5417413 to -4416987). The immotility of sperms was 27%, 57% and 26% in groups A, B and C respectively. There was 30% decreased motility of sperm in group B (p < 0.001, CI -30.19425 to -19.80575) as compared to group A. Compared with group C, the immotile sperm were increased to 31% (p < 0.001, CI 19.87494 - 30.92506). CONCLUSION Lead produced toxic effects on germinal epithelium and altered the quality of semen which was improved by zinc.
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Affiliation(s)
- Muhammad Rafique
- Department of Anatomy, Dow International Medical College, Dow University of Health Sciences, Karachi.
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Perveen K, Bokhari N. First Report of Fusarium Wilt of Lavandula pubescens Caused by Fusarium oxysporum in Saudi Arabia. Plant Dis 2010; 94:1163. [PMID: 30743709 DOI: 10.1094/pdis-94-9-1163b] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In November 2008, a wilt of lavender (Lavandula pubescens) seedlings was observed in the greenhouse at King Saud University, Riyadh, Saudi Arabia. Affected seedlings were wilted and the root system was poorly developed. Diseased stems developed a dark coloration that extended down to the roots. Vascular tissue of the affected seedlings appeared red or brown. Isolations consistently yielded a fungus growing from the discolored stem tissue when placed on potato dextrose agar. The macroscopic characteristics of the colony, as well as microscopic structures, were used to identify the fungus as Fusarium oxysporum (2). Oval to elliptical microconidia without septa and originating from short phialides were used to distinguish the species from F. solani (1). The fungus was authenticated by the ITCC (Indian Type Collection Centre), Indian Agricultural Research Institute, New Delhi, India, and given I.D. No. 7532.09. For conducting further experiments, healthy seedlings of L. pubescens were obtained from the botanical garden of the King Saud University and grown in steam-sterilized soil. Healthy seedlings of lavender were inoculated using a root-dip method with a conidial suspension (1 × 107 CFU/ml) of one strain of F. oxysporum obtained from infected plants. Inoculated seedlings were then transplanted into steam-sterilized soil. Plants inoculated with sterilized water (1 ml per plant) served as control treatments. Wilt symptoms and vascular discoloration in the roots and crown developed within 20 days on all plants inoculated with the pathogen, while control plants remained asymptomatic. F. oxysporum was consistently reisolated from symptomatic plants. The pathogenicity test was conducted twice. To our knowledge, this is the first report of F. oxysporum on L. pubescens in Saudi Arabia or elsewhere in the world, and this newly identified disease may be a potential threat to commercial production of lavender. References: (1) J. F. Leslie and B. A. Summerell. Page 212 in: The Fusarium Laboratory Manual. Blackwell Publishing Professional, Hoboken, NJ, 2006. (2) P. C. Nelson et al. Clin. Microbiol. Rev. 7:479, 1994.
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Affiliation(s)
- K Perveen
- Department of Botany and Microbiology, King Saud University, P.O. Box 22452, Riyadh-11495, Kingdom of Saudi Arabia
| | - N Bokhari
- Department of Botany and Microbiology, King Saud University, P.O. Box 22452, Riyadh-11495, Kingdom of Saudi Arabia
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