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The in vitro effect of oxidized LDL and PHA on proliferation and gene expression of regulatory T cells in patients with atherosclerosis.

Authors:
Azadeh Mottaghi Eisa Salehi Hashem Sezavar Seyed Ali Keshavarz Mohammad Reza Eshraghian Nima Rezaei Leili Rejali Ali-Akbar Saboor-Yaraghi

Iran J Allergy Asthma Immunol 2012 Sep;11(3):217-23

Department of Nutrition and Biochemistry, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.

Atherosclerosis is a chronic inflammatory condition that affects the arterial wall. Oxidized low-density lipoprotein (ox-LDL) seems to have an important role in atherosclerotic plaque formation.This study was performed to investigate the effects of ox-LDL as well as PHA on proliferation and gene expression of peripheral blood mononuclear cells (PBMCs) in patients with atherosclerosis compared to healthy controls. Proliferation of PBMCs was assessed by BrdU assay, while gene expression was assessed by real-time PCR. Both PHA and ox-LDL significantly induced proliferation of PBMCs of patients and controls. PBMCs from controls showed significantly higher proliferation when stimulated with ox-LDL compared to patients. Expression of TGF-β was significantly lower in PBMCs from patients compared to healthy controls (p<0.001). Following simulation with PHA, TGF-β and Foxp3 gene expression levels in patients and controls were significantly decreased (p<0.001). Expression of Foxp3 in PBMCs treated with ox-LDL was significantly decreased in patients and controls.Decreased expression of TGF-β and Foxp3 genes after ox-LDL stimulation may be due to more sensitivity of Treg cells than effector T cells to ox-LDL. Presence of ox-LDL within atheroma could be associated with the diminished population of Treg cells in the atherosclerotic patients.

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http://dx.doi.org/011.03/ijaai.217223DOI Listing
September 2012

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Meri Kaustio Naemeh Nayebzadeh Reetta Hinttala Terhi Tapiainen Pirjo Åström Katariina Mamia Nora Pernaa Johanna Lehtonen Virpi Glumoff Elisa Rahikkala Päivi Olsén Antti Hassinen Minttu Polso Nashat Al Sukaiti Jalila Alshekaili Mahmood Al Kindi Nadia Al Hashmi Henrikki Almusa Daria Bulanova Emma Haapaniemi Pu Chen Maria Suo-Palosaari Päivi Vieira Hannu Tuominen Hannaleena Kokkonen Nabil Al Macki Huda Al Habsi Tuija Löppönen Heikki Rantala Vilja Pietiäinen Shen-Ying Zhang Marjo Renko Timo Hautala Tariq Al Farsi Johanna Uusimaa Janna Saarela

J Allergy Clin Immunol 2021 Mar 1. Epub 2021 Mar 1.

Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland; Centre for Molecular Medicine Norway (NCMM), University of Oslo, Oslo, Norway. Electronic address:

Background: Homozygous loss of DIAPH1 results in seizures, cortical blindness, and microcephaly syndrome (SCBMS). We studied five Finnish and two Omani patients with loss of DIAPH1 presenting with SCBMS, mitochondrial dysfunction and immunodeficiency.

Objective: To further characterize phenotypes and disease mechanisms associated with loss of DIAPH1. Read More

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Mesenchymal stem cells regulate type 2 innate lymphoid cells via regulatory T cells through ICOS-ICOSL interaction.

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Stem Cells 2021 Mar 4. Epub 2021 Mar 4.

Otorhinolaryngology Hospital, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou, P. R. China.

Group 2 innate lymphoid cells (ILC2s) are recognized as key controllers and effectors of type 2 inflammation. Mesenchymal stem cells (MSCs) have been demonstrated to alleviate type 2 inflammation by modulating T lymphocyte subsets and decreasing T 2 cytokine levels. However, the effects of MSCs on ILC2s have not been investigated. Read More

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A 3' tRNA-derived fragment produced by tRNA and tRNA is associated with poor prognosis in B-cell chronic lymphocytic leukemia, independently of classical prognostic factors.

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Eur J Haematol 2021 Mar 4. Epub 2021 Mar 4.

Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, 15701, Athens, Greece.

Objective: 3´ tRNA-derived fragments (3´ tRFs) are important epigenetic regulators in normal and pathological conditions. In this study, we aimed to explore the potential value of a 3´ tRF as a prognostic and/or screening biomarker for B-cell chronic lymphocytic leukemia (B-CLL).

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Cent Eur J Immunol 2020 30;45(4):403-408. Epub 2021 Jan 30.

Department of Gynecology, Jiangxi Maternity and Child Healthcare Hospital, Nanchang City, Jiangxi, PR China.

Introduction: There has a close relationship between the balance of T helper 17 (Th17) cells and Foxp3+ regulatory T cells (Treg) and unexplained recurrent pregnancy loss (URPL). The present study is to investigate the regulatory effect of daphnetin, which is extracted from Daphne odora Var, on the balance of Th17 and Treg cells in the peripheral blood mononuclear cells (PBMCs) from patients with URPL.

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Int J Neurosci 2021 Mar 3:1-10. Epub 2021 Mar 3.

Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran.

In the present study we aimed to investigate the effects of nano-curcumin supplementation on gene expression and serum levels of IL-4 and TGF-β in migraine patients. Forty participants with episodic migraine were randomly allocated to receive 80 mg nano-curcumin ( = 20) or placebo ( = 20) in a randomized double-blind clinical trial for two months. At the beginning and the end of the study, the interictal serum levels and gene expression of IL-4 and TGF-β in peripheral blood mononuclear cells (PBMCs) isolated from migraine patients were measured, using ELISA and real-time PCR methods, respectively. Read More

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