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Papaporfyriou A, Bartziokas K, Papachatzopoulou E, Grapatsas K, Kallieri M, Spathis A, Steiropoulos P, Bakakos P, Papiris S, Loukides S, Papaioannou AI. Effects of menopause and fat mass in asthmatic inflammation. J Asthma 2024:1-9. [PMID: 38900498 DOI: 10.1080/02770903.2024.2362859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024]
Abstract
INTRODUCTION Female hormones and obesity have an impact on women with asthma. We aimed to describe how these components affect asthma inflammatory processes. METHODS Sex hormones [FSH, LH, estradiol (E2), estrone (E1), testosterone and Δ4 androstenedione (A4)] and serum IL1β, IL13, IL17a, IL-5, IL6, TNF-a were measured from 11 to18 pre- and postmenopausal women with asthma. RESULTS Premenopausal normal weight women revealed higher levels of IL5 and IL17a than obese women on both days of the menstrual cycle (IL5: D1: 6.4 vs 1.4 pg/ml, p = .036 and D14: 3 vs 1.4 pg/ml, p = .045 and IL17a: D1: 13.7 pg/ml vs 10.6 pg/ml and D14: 12.4 pg/ml vs 10.6 pg/ml, p = .009, respectively). In premenopausal women on D1, Δ4 Androstenedione was positively correlated with IL1β (p = .016, r = 0.733), whereas on D14, Estradiol with IL1β (p = .009, r = -.768) and TNF-a with Testosterone (p = .004, r = -0.816), and Δ4 Androstenedione (p = .002, r = -0.841) negatively. In postmenopausal women, TNF-a was negatively associated with FSH (p = .004, r = -0.638), but positively with Testosterone (p = .025, r = 0.526) and IL10 also positively with Estradiol (p = .007, r = 0.610). CONCLUSION Obesity shows a protective role in asthma through the suppression of IL5 and IL17. Estrogens seem to inhibit Th1 and Th2 inflammation, while androgens have a dual role with negative and positive correlations with neutrophilic biomarkers.
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Affiliation(s)
- Anastasia Papaporfyriou
- Division of Pulmonology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | | | - Eftychia Papachatzopoulou
- 1st Department of Obstetrics and Gynecology, National and Kapodistrian University of Athens, Alexandra Hospital, Athens, Greece
| | - Kostas Grapatsas
- Department of Thoracic Surgery and Thoracic Endoscopy, Ruhrlandklinik, West German Lung Center, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Maria Kallieri
- 2nd Respiratory Medicine Department, Attikon University Hospital, Athens, Greece
| | - Aris Spathis
- Department of Pathology, Attikon University Hospital, Athens Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Paschalis Steiropoulos
- Department of Respiratory Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Petros Bakakos
- 1st University Department of Respiratory Medicine, Sotiria Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Spyros Papiris
- 2nd Respiratory Medicine Department, Attikon University Hospital, Athens, Greece
| | - Stelios Loukides
- 2nd Respiratory Medicine Department, Attikon University Hospital, Athens, Greece
| | - Andriana I Papaioannou
- 1st University Department of Respiratory Medicine, Sotiria Hospital, National and Kapodistrian University of Athens, Athens, Greece
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Sato S, Nakaji S, Sawada K, Akimoto N, Tateda T, Kaizuka M, Sasada T, Nomiya H, Igarashi G, Iino C, Chinda D, Mikami T, Sakuraba H, Fukuda S. Association between reactive oxygen species production in neutrophils and liver fibrosis in the general population. J Clin Biochem Nutr 2023; 73:214-220. [PMID: 37970548 PMCID: PMC10636577 DOI: 10.3164/jcbn.23-46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 07/22/2023] [Indexed: 11/17/2023] Open
Abstract
Fibrosis, induced by reactive oxygen species (ROS) production in neutrophils, has harmful effects on the liver and various other organs. However, little is known about the association between liver fibrosis and ROS levels in neutrophils in the general population. This large-scale epidemiological study aimed to determine the association between liver fibrosis and neutrophil-generated ROS levels according to age and sex in the general population. This cross-sectional study included 1,000 participants from a district health promotion project. Participants were grouped based on sex (male; female) and age (young, <65 years; old, ≥65 years). The four groups were as follows: male, young (n = 289); male, old (n = 100); female, young (n = 425); and female, old (n = 186). Liver fibrosis was assessed using the fibrosis 4 (FIB-4) index, aspartate aminotransferase-to-platelet ratio index (APRI), and non-alcoholic fatty liver disease (NAFLD) fibrosis score (NFS). Basal and stimulated ROS were considered in the analysis. Multiple linear analyses showed (1) significant positive correlations between all liver fibrosis scores and basal ROS in the young groups, and (2) significant negative correlations between NFS and stimulated ROS in females. Preventing liver fibrosis through neutrophil-related immune system enhancement may avert the development of lifestyle-related diseases and infections.
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Affiliation(s)
- Satoshi Sato
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Shigeyuki Nakaji
- Center of Healthy Aging Innovation, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Kaori Sawada
- Center of Healthy Aging Innovation, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Naoki Akimoto
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Tetsuyuki Tateda
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Masatoshi Kaizuka
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Takafumi Sasada
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Hiroki Nomiya
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Go Igarashi
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Chikara Iino
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Daisuke Chinda
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Tatsuya Mikami
- Center of Healthy Aging Innovation, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Hirotake Sakuraba
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Shinsaku Fukuda
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
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Harrison TD, Chaney EM, Brandt KJ, Ault-Seay TB, Payton RR, Schneider LG, Strickland LG, Schrick FN, McLean KJ. The effects of nutritional level and body condition score on cytokines in seminal plasma of beef bulls. FRONTIERS IN ANIMAL SCIENCE 2023. [DOI: 10.3389/fanim.2022.1078960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
IntroductionHigh quality semen is essential for reproductive efficiency. Nutrition and environmental factors impact the ejaculate components, like cytokines, that are essential for pregnancy establishment. We hypothesized that differing nutritional periods and body condition scores would affect seminal plasma cytokine concentrations of bulls.MethodsMature Angus bulls (n=11) were individually housed and randomly assigned to either over-fed (n=5) or restricted (n=6) treatment pathways. Bulls were fed different volumes of a single ration creating 8 individual treatment periods. Body weight and body condition scores were taken every 14 d to manage intake volumes. Ejaculates were collected every 84 d to determine seminal plasma cytokine profiles. A complete randomized design was used to evaluate seminal plasma cytokines after each nutritional treatment. Initial cytokine concentrations and volume of the ejaculate were included as covariates.ResultsAll cytokines returned to initial concentrations following maintenance treatments at an ideal body condition score of 6. Nutritional treatments affected (P ≤ 0.05) IFN-γ, IL-8, MIP-1α, MIP-1β, TNF-α, IL-1β, and VEGF-A. However, TNF-α, IFN-γ, and MIP-1α had the greatest impact on cytokine profile.DiscussionNutritional levels and adiposity altered seminal plasma cytokine concentrations which could potentially impact the inflammatory balance of the uterus and the immune responses necessary for pregnancy establishment.
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Immunoendocrine abnormalities in the female reproductive system, and lung steroidogenesis during experimental pulmonary tuberculosis. Tuberculosis (Edinb) 2023; 138:102274. [PMID: 36463716 DOI: 10.1016/j.tube.2022.102274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 11/10/2022] [Accepted: 11/12/2022] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Tuberculosis (TB) caused by Mycobacterium tuberculosis mainly affects the lungs, but can spread to other organs. TB chronically activates the immune and endocrine systems producing remarkable functional changes.So far, it is unknown whether pulmonary non-disseminated TB cause changes in the female reproductive system and lung endocrinology. OBJECTIVE To investigate whether pulmonary TB produces immunoendocrine alterations of the female mice reproductive organs, and lung estradiol synthesis. METHODS BALB/c mice were infected intratracheally with Mycobacterium tuberculosis (Mtb) strain H37Rv. Groups of six non-infected and infected animals were euthanized on different days. Bacillary loads were determined in the lungs, ovaries and uterus. Immunohistochemistry and morphometry studies were performed in histological sections. Serum estradiol wasassayed, and supernatantfrom cultured lung cells was analyzed by Thin Layer Chromatography (TLC). RESULTS Mtb only grew in lung tissue. Histopathology revealed abnormal folliculogenesis and decreased corpora lutea. Altered ovarian expression of IL-6, IL-1β was found. The infection increased serum estradiol. Estradiol synthesis by infected lung cells triplicate after 30 pi days.Aromatase immunostaining was found in the alveolar and bronchial epithelium, being stronger in the infected lungs, mainly in macrophages. CONCLUSION Pulmonary TB affects the histophysiology of the female reproductive system in absence of its local infection, and disturbslung endocrinology.
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Valentino SA, Chézeau L, Seidel C, Sébillaud S, Lorcin M, Chalansonnet M, Cosnier F, Gaté L. Exposure to TiO 2 Nanostructured Aerosol Induces Specific Gene Expression Profile Modifications in the Lungs of Young and Elderly Rats. NANOMATERIALS 2021; 11:nano11061466. [PMID: 34206090 PMCID: PMC8230065 DOI: 10.3390/nano11061466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/25/2021] [Accepted: 05/28/2021] [Indexed: 12/24/2022]
Abstract
Although aging is associated with a higher risk of developing respiratory pathologies, very few studies have assessed the impact of age on the adverse effects of inhaled nanoparticles. Using conventional and transcriptomic approaches, this study aimed to compare in young (12–13-week-old) and elderly (19-month-old) fisher F344 rats the pulmonary toxicity of an inhaled nanostructured aerosol of titanium dioxide (TiO2). Animals were nose-only exposed to this aerosol at a concentration of 10 mg/m3 for 6 h per day, 5 days per week for 4 weeks. Tissues were collected immediately (D0), and 28 days after exposure (D28). A pulmonary influx of neutrophilic granulocytes was observed in exposed rats at D0, but diminished with time while remaining significant until D28. Similarly, an increased expression of several genes involved in inflammation at the two post-exposure time-points was seen. Apart from an age-specific pulmonary influx of lymphocyte, only slight differences in physio-pathological responses following TiO2 exposure between young and elderly animals were noticed. Conversely, marked age-related differences in gene expression profiles were observed making possible to establish lists of genes specific to each age group and post-exposure times. These results highlight different signaling pathways that were disrupted in rats according to their age.
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Dama A, Baggio C, Boscaro C, Albiero M, Cignarella A. Estrogen Receptor Functions and Pathways at the Vascular Immune Interface. Int J Mol Sci 2021; 22:4254. [PMID: 33923905 PMCID: PMC8073008 DOI: 10.3390/ijms22084254] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/09/2021] [Accepted: 04/14/2021] [Indexed: 12/28/2022] Open
Abstract
Estrogen receptor (ER) activity mediates multiple physiological processes in the cardiovascular system. ERα and ERβ are ligand-activated transcription factors of the nuclear hormone receptor superfamily, while the G protein-coupled estrogen receptor (GPER) mediates estrogenic signals by modulating non-nuclear second messengers, including activation of the MAP kinase signaling cascade. Membrane localizations of ERs are generally associated with rapid, non-genomic effects while nuclear localizations are associated with nuclear activities/transcriptional modulation of target genes. Gender dependence of endothelial biology, either through the action of sex hormones or sex chromosome-related factors, is becoming increasingly evident. Accordingly, cardiometabolic risk increases as women transition to menopause. Estrogen pathways control angiogenesis progression through complex mechanisms. The classic ERs have been acknowledged to function in mediating estrogen effects on glucose metabolism, but 17β-estradiol also rapidly promotes endothelial glycolysis by increasing glucose transporter 1 (GLUT1) and 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 3 (PFKFB3) levels through GPER-dependent mechanisms. Estrogens alter monocyte and macrophage phenotype(s), and induce effects on other estrogen-responsive cell lineages (e.g., secretion of cytokines/chemokines/growth factors) that impact macrophage function. The pharmacological modulation of ERs for therapeutic purposes, however, is particularly challenging due to the lack of ER subtype selectivity of currently used agents. Identifying the determinants of biological responses to estrogenic agents at the vascular immune interface and developing targeted pharmacological interventions may result in novel improved therapeutic solutions.
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Affiliation(s)
- Aida Dama
- Department of Medicine, University of Padova, 35128 Padova, Italy; (A.D.); (M.A.)
| | - Chiara Baggio
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35128 Padova, Italy; (C.B.); (C.B.)
| | - Carlotta Boscaro
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35128 Padova, Italy; (C.B.); (C.B.)
| | - Mattia Albiero
- Department of Medicine, University of Padova, 35128 Padova, Italy; (A.D.); (M.A.)
- Venetian Institute of Molecular Medicine, 35129 Padova, Italy
| | - Andrea Cignarella
- Department of Medicine, University of Padova, 35128 Padova, Italy; (A.D.); (M.A.)
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Sodhi K, Wang X, Chaudhry MA, Lakhani HV, Zehra M, Pratt R, Nawab A, Cottrill CL, Snoad B, Bai F, Denvir J, Liu J, Sanabria JR, Xie Z, Abraham NG, Shapiro JI. Central Role for Adipocyte Na,K-ATPase Oxidant Amplification Loop in the Pathogenesis of Experimental Uremic Cardiomyopathy. J Am Soc Nephrol 2020; 31:1746-1760. [PMID: 32587074 PMCID: PMC7460907 DOI: 10.1681/asn.2019101070] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 04/28/2020] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Oxidative stress in adipocyte plays a central role in the pathogenesis of obesity as well as in the associated cardiovascular complications. The putative uremic toxin indoxyl sulfate induces oxidative stress and dramatically alters adipocyte phenotype in vitro. Mice that have undergone partial nephrectomy serve as an experimental model of uremic cardiomyopathy. This study examined the effects on adipocytes of administering a peptide that reduces oxidative stress to the mouse model. METHODS A lentivirus vector introduced the peptide NaKtide with an adiponectin promoter into the mouse model of experimental uremic cardiomyopathy, intraperitoneally. Then adipocyte-specific expression of the peptide was assessed for mice fed a standard diet compared with mice fed a western diet enriched in fat and fructose. RESULTS Partial nephrectomy induced cardiomyopathy and anemia in the mice, introducing oxidant stress and an altered molecular phenotype of adipocytes that increased production of systemic inflammatory cytokines instead of accumulating lipids, within 4 weeks. Consumption of a western diet significantly worsened the adipocyte oxidant stress, but expression of NaKtide in adipocytes completely prevented the worsening. The peptide-carrying lentivirus achieved comparable expression in skeletal muscle, but did not ameliorate the disease phenotype. CONCLUSIONS Adipocyte-specific expression of NaKtide, introduced with a lentiviral vector, significantly ameliorated adipocyte dysfunction and uremic cardiomyopathy in partially nephrectomized mice. These data suggest that the redox state of adipocytes controls the development of uremic cardiomyopathy in mice subjected to partial nephrectomy. If confirmed in humans, the oxidative state of adipocytes may be a therapeutic target in chronic renal failure.
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Affiliation(s)
- Komal Sodhi
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Xiaoliang Wang
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Muhammad Aslam Chaudhry
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Hari Vishal Lakhani
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Mishghan Zehra
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Rebecca Pratt
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Athar Nawab
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Cameron L. Cottrill
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Brian Snoad
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Fang Bai
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - James Denvir
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Jiang Liu
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Juan R. Sanabria
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Zijian Xie
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Nader G. Abraham
- Departments of Medicine and Pharmacology, New York Medical College, Valhalla, New York
| | - Joseph I. Shapiro
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
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Nash RJ, Bartholomew B, Penkova YB, Rotondo D, Yamasaka F, Stafford GP, Jenkinson SF, Fleet GWJ. Iminosugar idoBR1 Isolated from Cucumber Cucumis sativus Reduces Inflammatory Activity. ACS OMEGA 2020; 5:16263-16271. [PMID: 32656449 PMCID: PMC7346245 DOI: 10.1021/acsomega.0c02092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 06/11/2020] [Indexed: 05/17/2023]
Abstract
Cucumbers have been anecdotally claimed to have anti-inflammatory activity for a long time, but the active principle was not identified. idoBR1, (2R,3R,4R,5S)-3,4,5-trihydroxypiperidine-2-carboxylic acid, is an iminosugar amino acid isolated from fruits of certain cucumbers, Cucumis sativus (Cucurbitaceae). It has no chromophore and analytically behaves like an amino acid making detection and identification difficult. It has anti-inflammatory activity reducing lipopolysaccharide (LPS)-induced tumor necrosis factor alpha (TNF-α) in THP-1 cells and ex vivo human blood. It showed selective inhibition of human α-l-iduronidase and sialidases from both bacteria (Tannerella forsythia) and human THP-1 cells. idoBR1 and cucumber extract reduced the binding of hyaluronic acid (HA) to CD44 in LPS-stimulated THP-1 cells and may function as an anti-inflammatory agent by inhibiting induced sialidase involved in the production of functionally active HA adhesive CD44. Similar to the related iminosugars, idoBR1 is excreted unchanged in urine following consumption. Its importance in the diet should be further evaluated.
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Affiliation(s)
- Robert J. Nash
- PhytoQuest
Limited, Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, U.K.
- . Phone: +44 1970 823200. Fax: +44 1970 823209
| | | | - Yana B. Penkova
- PhytoQuest
Limited, Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, U.K.
| | - Dino Rotondo
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, U.K.
| | - Fernanda Yamasaka
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, U.K.
| | - Graham P. Stafford
- Integrated
BioSciences, School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, U.K.
| | - Sarah F. Jenkinson
- Chemistry
Research Laboratory, University of Oxford, Oxford OX1 3TA, U.K.
| | - George W. J. Fleet
- Chemistry
Research Laboratory, University of Oxford, Oxford OX1 3TA, U.K.
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Tang X, Liu C, Li T, Lin C, Hao Z, Zhang H, Zhao G, Chen Y, Guo A, Hu C. Gambogic acid alleviates inflammation and apoptosis and protects the blood-milk barrier in mastitis induced by LPS. Int Immunopharmacol 2020; 86:106697. [PMID: 32585608 DOI: 10.1016/j.intimp.2020.106697] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 11/28/2022]
Abstract
Mastitis is one of the most common diseases among dairy cows. There is still much debate worldwide as to whether antibiotic therapy should be given to dairy cows, or if natural products should be taken as a substitute for antibacterial therapy. As the antibiotic treatment leads to the bacterial resistance and drug residue in milk, introducing natural products for mastitis is becoming a trend. This study investigates the mechanisms of the protective effects of the natural product gambogic acid (GA) in lipopolysaccharide (LPS)-induced mastitis. For in vitro treatments, it was found that GA reduced IL-6, TNF-α, and IL-1β levels by inhibiting the phosphorylation of proteins in the nuclear factor κB (NF-κB) and the mitogen-activated protein kinase (MAPK) pathway. GA also maintained a stable membrane mitochondrial potential and inhibited the overproduction of reactive oxygen species, which protected the cells from apoptosis. On the other hand, in vivo treatments with GA were found to reduce pathological symptoms markedly, and protected the blood-milk barrier from damage induced by LPS. The results demonstrate that GA plays a vital role in suppressing inflammation, alleviating the apoptosis effect, and protecting the blood-milk barrier in mastitis induced by LPS. Thus, these results suggest that the natural product GA plays a potential role in mastitis treatment.
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Affiliation(s)
- Xin Tang
- Department of Clinical Veterinary Medicine, Faculty of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China; State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Chang Liu
- Department of Clinical Veterinary Medicine, Faculty of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China; State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Ting Li
- Department of Clinical Veterinary Medicine, Faculty of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China; State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Changjie Lin
- Department of Clinical Veterinary Medicine, Faculty of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China; State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Zhiyu Hao
- Department of Preventive Veterinary Medicine, Faculty of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China; State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Hui Zhang
- Department of Preventive Veterinary Medicine, Faculty of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China; State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Gang Zhao
- Department of Preventive Veterinary Medicine, Faculty of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China; State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Yingyu Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Aizhen Guo
- Department of Preventive Veterinary Medicine, Faculty of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China; State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Changmin Hu
- Department of Clinical Veterinary Medicine, Faculty of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China.
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Brown S, Boules M, Hamza N, Wang X, Whalen M. Synthesis of interleukin 1 beta and interleukin 6 in human lymphocytes is stimulated by tributyltin. Arch Toxicol 2018; 92:2573-2586. [PMID: 29951691 PMCID: PMC6082394 DOI: 10.1007/s00204-018-2248-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 06/20/2018] [Indexed: 10/28/2022]
Abstract
Tributyltin (TBT) is a widespread environmental contaminant that is present in human blood and other tissues. It has been shown to disrupt the immune function of human natural killer (NK) cells and to alter the secretion of a number of pro-inflammatory cytokines from immune cells. Secretion of both interleukin 1β (IL-1β) and interleukin 6 (IL-6) from human lymphocytes can be increased dependent upon the level of TBT exposure. This study shows that the TBT-induced increases in secretion of both cytokines are due to TBT-induced increases in the synthesis of these proteins and not simply because of the release of pre-existing cytokine. Furthermore, the data indicate that these TBT-induced increases in IL-1β and IL-6 synthesis require MAP kinase signaling pathways. Additionally, elevated synthesis of IL-1β and IL-6 seen at the highest exposures to TBT (200, 200, 50 nM) were accompanied by increases in the mRNA for these cytokines. TBT-induced increases in IL-1β and IL-6 mRNAs were also shown to be dependent on MAP kinase signaling. The study suggests that TBT has the capacity to increase immune cell production of these 2 important pro-inflammatory cytokines and that this increase is in part explained by increased mRNA for the cytokines.
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Affiliation(s)
- Shyretha Brown
- Department of Biological Sciences, Tennessee State University, Nashville, TN, 37209, USA
| | - Mariam Boules
- Department of Biological Sciences, Tennessee State University, Nashville, TN, 37209, USA
| | - Nafisa Hamza
- Department of Chemistry, Tennessee State University, 3500 John A. Merritt Blvd., Nashville, TN, 37209, USA
| | - Xiaofei Wang
- Department of Biological Sciences, Tennessee State University, Nashville, TN, 37209, USA
| | - Margaret Whalen
- Department of Chemistry, Tennessee State University, 3500 John A. Merritt Blvd., Nashville, TN, 37209, USA.
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11
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Cury-Boaventura MF, Gorjão R, de Moura NR, Santos VC, Bortolon JR, Murata GM, Borges LDS, Momesso CM, Dermargos A, Pithon-Curi TC, Hatanaka E. The Effect of a Competitive Futsal Match on T Lymphocyte Surface Receptor Signaling and Functions. Front Physiol 2018; 9:202. [PMID: 29599721 PMCID: PMC5862818 DOI: 10.3389/fphys.2018.00202] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 02/23/2018] [Indexed: 12/11/2022] Open
Abstract
In this study, the lymphocyte activation status (surface expression of CD95, CD28, CD25, and CTLA-4), lymphocyte number, lymphocyte subpopulations, lymphocyte necrosis and/or apoptosis, and lymphocyte release of reactive oxygen species (ROS) were investigated in blood samples from 16 futsal athletes before and immediately following a competitive match. Lymphocytes were isolated from the blood samples, and the cellular parameters were assessed by flow cytometry. The futsal match induced lymphocytosis and lymphocyte apoptosis, as indicated by phosphatidylserine externalization, CD95 expression, and DNA fragmentation. Additionally, the competitive match induced the necrotic death of lymphocytes. No differences in the percentage of CD4+ and CD8+ T cells or in the T-helper/suppressor profile between before and immediately after the match were observed. Additionally, after the futsal match, the CD95 and CD28 expression levels were decreased, and the lymphocytes spontaneously released higher levels of ROS. Regardless of the origin, the situation-specific knowledge of lymphocyte behavior obtained herein may facilitate the design of strategies to control the processes that result in infection and tissue injury and that subsequently decrease athletic performance.
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Affiliation(s)
- Maria F Cury-Boaventura
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Renata Gorjão
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Nivaldo R de Moura
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Vinicius C Santos
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - José R Bortolon
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Gilson M Murata
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Leandro da Silva Borges
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - César M Momesso
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | | | - Tania C Pithon-Curi
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Elaine Hatanaka
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil
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12
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Huang H, Yu B, Liu W, Lin Q, Chen L, Chen J, Duan L, Shi G. Serum apoprotein A1 levels are inversely associated with disease activity in gout: From a southern Chinese Han population. Medicine (Baltimore) 2017; 96:e6780. [PMID: 28445313 PMCID: PMC5413278 DOI: 10.1097/md.0000000000006780] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
To analyze the alteration of lipid profile and inflammatory markers in the serum of patients with gouty arthritis (GA), the levels of serum lipid profile, C-reactive protein (CRP), and erythrocyte sedimentation rates (ESRs) were measured in the serum of 69 gout patients, 35 patients with rheumatoid arthritis (RA), 23 patients with ankylosing spondylitis (AS)/spondyloarthropathy (SpA), and 25 patients with osteoarthritis (OA). The serum levels of apoprotein A1 (Apo-A1) were significantly decreased in patients with gout when compared with RA, AS/SpA, and OA patients. The serum levels of CRP were significantly increased in gouty patients when compared with RA, AS/SpA, and OA patients. Furthermore, the serum levels of ESR were significantly increased in patients with gout compared to patients with OA. Correlation analysis indicated that the levels of Apo-A1 were negatively correlated with serum ESR and CRP (r = -0.475, P < .001; r = -0.380, P = .001, respectively) in the patients with GA. Taken together, this study gives us a better understanding of the relationships between serum lipid profile and inflammatory markers in gout patients.
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13
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Brown S, Tehrani S, Whalen MM. Dibutyltin-induced alterations of interleukin 1beta secretion from human immune cells. J Appl Toxicol 2017; 37:181-191. [PMID: 27185338 PMCID: PMC5114172 DOI: 10.1002/jat.3339] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 03/23/2016] [Accepted: 03/28/2016] [Indexed: 12/11/2022]
Abstract
Dibutyltin (DBT) is used to stabilize polyvinyl chloride plastics (including pipes that distribute drinking water) and as a de-worming agent in poultry. DBT is found in human blood, and DBT exposures alter the secretion of tumor necrosis factor alpha and interferon gamma from lymphocytes. Interleukin (IL)-1β is a proinflammatory cytokine that regulates cellular growth, tissue restoration and immune response regulation. IL-1β plays a role in increasing invasiveness of certain tumors. This study reveals that exposures to DBT (24 h, 48 h and 6 days) modify the secretion of IL-1β from increasingly reconstituted preparations of human immune cells (highly enriched human natural killer cells, monocyte-depleted [MD] peripheral blood mononuclear cells [PBMCs], PBMCs, granulocytes and a preparation combining both PBMCs and granulocytes). DBT altered IL-1β secretion from all cell preparations. Higher concentrations of DBT (5 and 2.5 μm) decreased the secretion of IL-1β, while lower concentrations of DBT (0.1 and 0.05 μm) increased the secretion of IL-1β. Selected signaling pathways were examined in MD-PBMCs to determine if they play a role in DBT-induced elevations of IL-1β secretion. Pathways examined were IL-1β converting enzyme (caspase 1), mitogen-activated protein kinases and nuclear factor kappa B. Caspase 1 and mitogen-activated protein kinase pathways appear to be utilized by DBT in increasing IL-1β secretion. These results indicate that DBT alters IL-1β secretion from human immune cells in an ex. vivo system utilizing several IL-1β regulating signaling pathways. Thus, DBT may have the potential to alter IL-1β secretion in an in vivo system. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Shyretha Brown
- Department of Biological Sciences, Tennessee State University, Nashville, TN, USA
| | - Shahin Tehrani
- Department of Chemistry, Tennessee State University, Nashville, TN, USA
| | - Margaret M Whalen
- Department of Chemistry, Tennessee State University, Nashville, TN, USA
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14
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Silva TA, Garlet GP, Fukada SY, Silva JS, Cunha FQ. Chemokines in Oral Inflammatory Diseases: Apical Periodontitis and Periodontal Disease. J Dent Res 2016; 86:306-19. [PMID: 17384024 DOI: 10.1177/154405910708600403] [Citation(s) in RCA: 256] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The inflammatory oral diseases are characterized by the persistent migration of polymorphonuclear leukocytes, monocytes, lymphocytes, plasma and mast cells, and osteoblasts and osteoclasts. In the last decade, there has been a great interest in the mediators responsible for the selective recruitment and activation of these cell types at inflammatory sites. Of these mediators, the chemokines have received particular attention in recent years. Chemokine messages are decoded by specific receptors that initiate signal transduction events, leading to a multitude of cellular responses, including chemotaxis and activation of inflammatory and bone cells. However, little is known about their role in the pathogenesis of inflammatory oral diseases. The purpose of this review is to summarize the findings regarding the role of chemokines in periapical and periodontal tissue inflammation, and the integration, into experimental models, of the information about the role of chemokines in human diseases.
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Affiliation(s)
- T A Silva
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, CEP 31.270-901, Belo Horizonte, Minas Gerais, Brazil.
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Small-Volume Adenosine, Lidocaine, and Mg2+ 4-Hour Infusion Leads to 88% Survival after 6 Days of Experimental Sepsis in the Rat without Antibiotics. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2016; 23:863-872. [PMID: 27581435 DOI: 10.1128/cvi.00390-16] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 08/25/2016] [Indexed: 12/29/2022]
Abstract
Innovative host-directed drug therapies are urgently required to treat sepsis. We tested the effect of a small-volume 0.9% NaCl adenosine, lidocaine, and Mg2+ (ALM) bolus and a 4-h intravenous infusion on survivability in the rat model of polymicrobial sepsis over 6 days. ALM treatment led to a significant increase in survivability (88%) compared to that of controls (25%). Four controls died on day 2 to 3, and two died on day 5. Early death was associated with elevated plasma and lung inflammatory markers (interleukin-6 [IL-6], IL-1β, C-reactive protein), reduced white blood cell (WBC) count, hypoxemia, hypercapnia, acidosis, hyperkalemia, and elevated lactate, whereas late death was associated with a massive cytokine storm, a neutrophil-dominated WBC rebound/overshoot, increased lung oxidant injury, edema, and persistent ischemia. On day 6, seven of eight ALM survivors had inflammatory and immunological profiles not significantly different from those of sham-treated animals. We conclude in the rat model of experimental sepsis that small-volume ALM treatment led to higher survivability at 6 days (88%) than that of controls (25%). Early death in controls (day 2 to 3) was associated with significantly elevated plasma levels of IL-1β, IL-6, and C-reactive protein, severe plasma lymphocyte deficiency, reduced neutrophils, and acute lung injury. Late death (day 5) was associated with a massive neutrophil inflammatory storm, increased lung injury, and persistent ischemia. Possible mechanisms of ALM protection are discussed.
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Foley C, Chapwanya A, Callanan JJ, Whiston R, Miranda-CasoLuengo R, Lu J, Meijer WG, Lynn DJ, O' Farrelly C, Meade KG. Integrated analysis of the local and systemic changes preceding the development of post-partum cytological endometritis. BMC Genomics 2015; 16:811. [PMID: 26482908 PMCID: PMC4617749 DOI: 10.1186/s12864-015-1967-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 09/30/2015] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND The regulation of endometrial inflammation has important consequences for the resumption of bovine fertility postpartum. All cows experience bacterial influx into the uterus after calving; however a significant proportion fail to clear infection leading to the development of cytological endometritis (CE) and compromised fertility. We hypothesised that early immunological changes could not only act as potential prognostic biomarkers for the subsequent development of disease but also shed light on the pathogenesis of endometritis in the postpartum dairy cow. METHODS Endometrial biopsy RNA was extracted from 15 cows at 7 and 21 days postpartum (DPP), using the Qiagen RNeasy(®) Plus Mini kit and quality determined using an Agilent 2100 bioanalyser. Disease status was determined by histpathology based on inflammatory cell infiltrate. RNA-seq of both mRNA and miRNA libraries were performed on an Illumina® HiSeq(™) 2000. Paired reads were aligned to the bovine genome with Bowtie2 and differentially expressed genes were identified using EdgeR. Significantly over-represented Gene Ontology terms were identified using GO-seq, and pathway analysis was performed using KEGG. Quanititative real-time PCR was also performed for validation (ABI 7500 fast). Haematology was assessed using an automated ADVIA 2120 analyser. Serum proteins were evaluated by ELISA and metabolite analysis was performed using a Beckman Coulter AU 400 clinical analyser. Terminal-restriction fragment length polymorphism (T-RFLP) was used to obtain fingerprints of the microbial communities present. RESULTS Next-generation sequencing from endometrial biopsies taken at 7 DPP identified significant induction of inflammatory gene expression in all cows. Despite the common inflammatory profile and enrichment of the Toll-like receptor and NFκB pathways, 73 genes and 31 miRNAs were significantly differentially expressed between healthy cows (HC, n = 9) and cows which subsequently developed CE at 7 DPP (n = 6, FDR < 0.1). While significant differential expression of 4197 genes in the transcriptome of healthy cows between 7 and 21 DPP showed the transition from a proinflammatory to tissue profliferation and repair, only 31 genes were differentially expressed in cows with CE (FDR < 0.1), indicating the arrest of such a transition. A link betwene the dysregulated inflammatory response and the composition of the uterine microbial communities was suggested by the presence of significant differences in uterine bacterial tRFLP profiles between HC and CE groups. Furthermore, inflammatory activity was not confined to the uterus; decreased circulating granulocytes and increased Acute Phase Protein (SAA and HP) expression levels were detected in plasma at 7 DPP in cows that developed CE. CONCLUSION Our data suggests that the IL1 and IL17 inflammatory cascade activated early postpartum is resolved thereby restoring homeostasis in healthy cows by 21 DPP, but this transition fails to occur in cows which develop CE. Despite a common early inflammatory profile, elevated and differential expression of specific immune genes may identify cows at risk of prolonged inflammation and the development of CE postpartum.
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Affiliation(s)
- Cathriona Foley
- Animal & Bioscience Research Department, Animal & Grassland Research and Innovation Centre, Teagasc, Grange, Co. Meath, Ireland.,Comparative Immunology Group, School of Biochemistry and Immunology, Trinity College, Dublin 2, Ireland
| | - Aspinas Chapwanya
- Ross University, School of Veterinary Medicine, St Kitts, P.O. Box 334, Basseterre, West Indies, Dominica
| | - John J Callanan
- Ross University, School of Veterinary Medicine, St Kitts, P.O. Box 334, Basseterre, West Indies, Dominica.,UCD School of Veterinary Medicine, University College Dublin, Dublin 4, Ireland
| | - Ronan Whiston
- Animal & Bioscience Research Department, Animal & Grassland Research and Innovation Centre, Teagasc, Grange, Co. Meath, Ireland.,Comparative Immunology Group, School of Biochemistry and Immunology, Trinity College, Dublin 2, Ireland
| | - Raúl Miranda-CasoLuengo
- UCD School of Biomolecular and Biomedical Science and UCD Conway Institute of Biomolecular and Biomedical Research. University College Dublin, Dublin 4, Ireland
| | - Junnan Lu
- UCD School of Biomolecular and Biomedical Science and UCD Conway Institute of Biomolecular and Biomedical Research. University College Dublin, Dublin 4, Ireland
| | - Wim G Meijer
- UCD School of Biomolecular and Biomedical Science and UCD Conway Institute of Biomolecular and Biomedical Research. University College Dublin, Dublin 4, Ireland
| | - David J Lynn
- Animal & Bioscience Research Department, Animal & Grassland Research and Innovation Centre, Teagasc, Grange, Co. Meath, Ireland.,South Australian Health & Medical Research Institute, North Terrace, Adelaide, 5000, SA, Australia.,School of Medicine, Flinders University, Bedford Park, Flinders, 5042, SA, Australia
| | - Cliona O' Farrelly
- Comparative Immunology Group, School of Biochemistry and Immunology, Trinity College, Dublin 2, Ireland
| | - Kieran G Meade
- Animal & Bioscience Research Department, Animal & Grassland Research and Innovation Centre, Teagasc, Grange, Co. Meath, Ireland.
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Brown S, Whalen M. Tributyltin alters secretion of interleukin 1 beta from human immune cells. J Appl Toxicol 2015; 35:895-908. [PMID: 25382723 PMCID: PMC4424187 DOI: 10.1002/jat.3087] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 09/02/2014] [Accepted: 09/26/2014] [Indexed: 01/08/2023]
Abstract
Tributyltin (TBT) has been used as a biocide in industrial applications such as wood preservation, antifouling paint and antifungal agents. Owing to its many uses, it contaminates the environment and has been found in human blood samples. Interleukin-1 beta (IL-1β) is a pro-inflammatory cytokine that promotes cell growth, tissue repair and immune response regulation. Produced predominately by both monocytes and macrophages, IL-1β appears to increase the invasiveness of certain tumors. This study shows that TBT modifies the secretion of IL-1β from increasingly reconstituted preparations of human immune cells. IL-1β secretion was examined after 24-, 48-h or 6-day exposures to TBT in highly enriched human natural killer (NK) cells, monocyte-depleted peripheral blood mononuclear cells (MD-PBMCs), PBMCs, granulocytes and a preparation combining both PBMCs and granulocytes (PBMCs+granulocytes). TBT altered IL-1β secretion from all of the cell preparations. The 200 nM concentration of TBT normally blocked the secretion of IL-1β, whereas lower concentrations (usually 5-50 nM) elevated secretion of IL-1β. Examination of the signaling pathway(s) responsible for the elevated secretion of IL-1β was carried out in MD-PBMCs. Pathways examined were IL-1β processing (Caspase-1), mitogen-activated protein kinases (MAPKs) and nuclear factor kappa B (NFκB). Results indicated that MAPK pathways (p44/42 and p38) appear to be the targets of TBT that lead to increased IL-1β secretion from immune cells. These results from human immune cells show IL-1β dysregulation by TBT is occurring ex vivo. Thus, the potential for in vivo effects on pro-inflammatory cytokine levels may possibly be a consequence of TBT exposures.
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Affiliation(s)
- Shyretha Brown
- Department of Biological Sciences, Tennessee State University, Nashville, TN, 37209, USA
| | - Margaret Whalen
- Department Chemistry, Tennessee State University, Nashville, TN, 37209, USA
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18
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Gragnani A, Cezillo MVB, Oliveira AF, Ferreira LM. Neuroleptic malignant syndrome in trauma patient. Burns 2015; 41:1147-51. [PMID: 26048132 DOI: 10.1016/j.burns.2015.01.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 11/10/2014] [Accepted: 01/17/2015] [Indexed: 11/27/2022]
Abstract
In recent years, there has been an increased use of neuroleptic agents in the unit care in trauma patients. There is a lack of prospective data, and most of the information is obtained from related cases. It is needed to have a high index of suspicion with regard to excluding neuroleptic malignant syndrome (NMS) in patients taking neuroleptics and presenting with hyperthermia, because of the potentially fatal consequences. It is a rare syndrome in the burn patient with a lack of proven treatments, and high morbidity and mortality are related. In the actual literature there are few related cases of NMS in the polytrauma patient, particularly in association with psychiatric conditions. In burn NMS is a rare complication with difficult diagnosis, because of the similar symptoms that can occur either in patients in the Burn Unit Care with other fatal conditions that are present in the acute phase response. Actually, there is no marker for the NMS, which difficult the early diagnosis and prognosis. The treatment still is based on case reports, with lack of clinical trials, but remain as standard and universally accepted. Besides that, the neural signaling of the NMS indicates possibilities for better understanding of the pathophysiology treatment protocol.
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Affiliation(s)
- Alfredo Gragnani
- Division of Plastic Surgery, Federal University of São Paulo/Escola Paulista de Medicina (UNIFESP/EPM), Brazil.
| | | | - Andrea Fernandes Oliveira
- Burn Care Unit - Division of Plastic Surgery, Federal University of São Paulo/Escola Paulista de Medicina (UNIFESP/EPM), Brazil
| | - Lydia Masako Ferreira
- Chairwoman of Division of Plastic Surgery, Federal University of São Paulo/Escola Paulista de Medicina (UNIFESP/EPM), Brazil
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Marco-Ramell A, Hummel K, Razzazi-Fazeli E, Bassols A, Miller I. Concentration and pattern changes of porcine serum apolipoprotein A-I in four different infectious diseases. Electrophoresis 2015; 36:543-51. [PMID: 25377528 DOI: 10.1002/elps.201400299] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 10/03/2014] [Accepted: 10/29/2014] [Indexed: 01/04/2023]
Abstract
Apolipoprotein A-I (Apo A-I) is a major protein in lipid/lipoprotein metabolism and decreased serum levels have been observed in many species in response to inflammatory and infectious challenges. Little is known about the porcine homologue, therefore in this work we have characterized it through biochemical and proteomic techniques. In 2DE, porcine serum Apo A-I is found as three spots, the two more acidic ones corresponding to the mature protein, the more basic spot to the protein precursor. Despite high sequence coverage in LC-MS/MS, we did not find a sequence or PTM difference between the two mature protein species. Besides this biochemical characterization, we measured overall levels and relative species abundance of serum Apo A-I in four different viral and bacterial porcine infectious diseases. Lower overall amounts of Apo A-I were observed in Salmonella typhimurium and Escherichia coli infections. In the 2DE protein pattern, an increase of the protein precursor together with a lower level of mature protein species were detected in the porcine circovirus type 2-systemic disease and S. typhimurium infection. These results reveal that both the porcine serum Apo A-I concentration and the species pattern are influenced by the nature of the infectious disease.
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Affiliation(s)
- Anna Marco-Ramell
- Departament de Bioquímica i Biologia Molecular, Facultat de Veterinària, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
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Jang SE, Jeong JJ, Hyam SR, Han MJ, Kim DH. Ursolic acid isolated from the seed of Cornus officinalis ameliorates colitis in mice by inhibiting the binding of lipopolysaccharide to Toll-like receptor 4 on macrophages. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:9711-21. [PMID: 25213465 DOI: 10.1021/jf501487v] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Ursolic acid, which was isolated from an ethanol extract of Cornus officinalis seed, potently inhibited nuclear factor κ light-chain enhancer of activated B cells (NF-κB) activation in lipopolysaccharide (LPS)-stimulated peritoneal macrophages. Therefore, we investigated the anti-inflammatory mechanism of ursolic acid in LPS-stimulated macrophages and colitic mice. Ursolic acid inhibited phosphorylation of interleukin 1 receptor-associated kinase (IRAK)1, TAK1, inhibitor of nuclear factor κB kinase subunit β (IKKβ), and IκBα as well as activation of NF-κB and MAPKs in LPS-stimulated macrophages. Ursolic acid suppressed LPS-stimulated interleukin (IL)-1β, IL-6, tumor necrosis factor (TNF)-α, cyclooxygenase (COX)-2, and inducible NO synthetase (iNOS) expression as well as PGE2 and NO levels. Ursolic acid not only inhibited the Alexa Fluor 488-conjugated LPS-mediated shift of macrophages but also reduced the intensity of fluorescent LPS bound to the macrophages transiently transfected with or without MyD88 siRNA. However, ursolic acid did not suppress NF-κB activation in peptidoglycan-stimulated macrophages. Oral administration of ursolic acid significantly inhibited 2,4,6-trinitrobenzenesulfonic acid (TNBS)-induced colon shortening and myeloperoxidase (MPO) activity in mice. Ursolic acid also suppressed TNBS-induced COX-2 and iNOS expression as well as NF-κB activation in colon tissues. Ursolic acid (20 mg/kg) also inhibited TNBS-induced IL-1β, IL-6, TNF-α by 93, 86, and 85%, respectively (p < 0.05). However, ursolic acid reversed TNBS-mediated downregulation of IL-10 expression to 79% of the normal control group (p < 0.05). On the basis of these findings, ursolic acid may ameliorate colitis by regulating NF-κB and MAPK signaling pathways via the inhibition of LPS binding to TLR4 on immune cells.
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Affiliation(s)
- Se-Eun Jang
- Department of Life and Nanopharmaceutical Sciences, ‡Department of Food and Nutrition, and §Department of Pharmacy, Kyung Hee University , Seoul 130-701, Korea
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21
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Meleine M, Matricon J. Gender-related differences in irritable bowel syndrome: Potential mechanisms of sex hormones. World J Gastroenterol 2014; 20:6725-6743. [PMID: 24944465 PMCID: PMC4051914 DOI: 10.3748/wjg.v20.i22.6725] [Citation(s) in RCA: 134] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 02/08/2014] [Accepted: 03/19/2014] [Indexed: 02/06/2023] Open
Abstract
According to epidemiological studies, twice as many women as men are affected by irritable bowel syndrome (IBS) in western countries, suggesting a role for sex hormones in IBS pathophysiology. Despite growing evidence about the implications of sex hormones in IBS symptom modulation, data on mechanisms by which they influence disease development are sparse. This review aims to determine the state of knowledge about the role of sex hormones in sensorimotor dysfunctions and to address the possible interplay of sex hormones with common risk factors associated with IBS. The scientific bibliography was searched using the following keywords: irritable bowel syndrome, sex, gender, ovarian hormone, estradiol, progesterone, testosterone, symptoms, pain, sensitivity, motility, permeability, stress, immune system, brain activity, spinal, supraspinal, imaging. Ovarian hormones variations along the menstrual cycle affect sensorimotor gastrointestinal function in both healthy and IBS populations. They can modulate pain processing by interacting with neuromodulator systems and the emotional system responsible for visceral pain perception. These hormones can also modulate the susceptibility to stress, which is a pivotal factor in IBS occurrence and symptom severity. For instance, estrogen-dependent hyper-responsiveness to stress can promote immune activation or impairments of gut barrier function. In conclusion, whereas it is important to keep in mind that ovarian hormones cannot be considered as a causal factor of IBS, they arguably modulate IBS onset and symptomatology. However, our understanding of the underlying mechanisms remains limited and studies assessing the link between IBS symptoms and ovarian hormone levels are needed to improve our knowledge of the disease evolution with regard to gender. Further studies assessing the role of male hormones are also needed to understand fully the role of sex hormones in IBS. Finally, investigation of brain-gut interactions is critical to decipher how stress, ovarian hormones, and female brain processing of pain can translate into gut dysfunctions.
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Alfonso-Loeches S, Pascual M, Guerri C. Gender differences in alcohol-induced neurotoxicity and brain damage. Toxicology 2013; 311:27-34. [DOI: 10.1016/j.tox.2013.03.001] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 02/18/2013] [Accepted: 03/03/2013] [Indexed: 02/07/2023]
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Feuerecker M, Mayer W, Kaufmann I, Gruber M, Muckenthaler F, Yi B, Salam AP, Briegel J, Schelling G, Thiel M, Choukèr A. A corticoid-sensitive cytokine release assay for monitoring stress-mediated immune modulation. Clin Exp Immunol 2013; 172:290-9. [PMID: 23574325 DOI: 10.1111/cei.12049] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/05/2012] [Indexed: 11/29/2022] Open
Abstract
The human immune system is orchestrated in a complex manner and protects the host against invading organisms and controls adequate immune responses to different antigen challenges in an endo-, auto- and paracrine-regulated fashion. The variety and intensity of immune responses are known to be dependent on stress-sensitive neural, humoral and metabolic pathways. The delayed-type hypersensitivity (DTH) skin test was a validated and standardized measure applied in clinical studies to monitor the integral function of cellular immune responses in vivo. The DTH skin test was, however, phased out in 2002. To obtain insight into the mechanisms of stress-sensitive immune reactions, we have developed an alternative in-vitro assay which allows the evaluation of antigen-dependent cellular immune responses triggered by T lymphocytes. The change in the concentration of proinflammatory cytokines in supernatant of the blood-antigen mixture is of particular interest to mirror the degree and adequacy of cellular immune responses. In this study we report that the proinflammatory cytokines interleukin (IL)-2, interferon (IFN)-γ and tumour necrosis factor (TNF)-α show a time-dependent increase upon ex-vivo bacterial, viral and fungal antigen stimulations. Furthermore, evidence is provided that this assay is sensitive to mirror stress hormone-mediated immune modulation in humans as shown either after hydrocortisone injection or after acute stress exposure during free fall in parabolic flight. This in-vitro test appears to be a suitable assay to sensitively mirror stress hormone-dependent inhibition of cellular immune responses in the human. Because of its standardization and relatively simple technical handling, it may also serve as an appropriate research tool in the field of psychoneuroendocrinology in clinical as in field studies.
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Affiliation(s)
- M Feuerecker
- Department of Anaesthesiology, Klinikum Großhadern, University of Munich, Munich, Germany
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Correlation between some hematological parameters, acute phase proteins and serum immunoglobulins in experimental caprine besnoitiosis. J Parasit Dis 2013; 39:155-61. [PMID: 26063991 DOI: 10.1007/s12639-013-0304-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2011] [Accepted: 04/21/2013] [Indexed: 02/02/2023] Open
Abstract
The present study was undertaken to investigate correlation between some hematological parameters, acute phase proteins and immunoglobulins in the experimentally infected goats with Besnoitia caprae from the time of infection till 360 days post infection (DPI). Six male goats, approximately 12-16 months old, were inoculated subcutaneously with approximately 1.3 × 10(8) bradyzoites of B. caprae and blood samples were collected at weekly intervals from the jugular vein of the goats. Total leukocyte count and differential leukocyte counts were determined. Acute phase proteins (APPs) including serum amyloid A (SAA), haptoglobin (Hp), fibrinogen and ceruloplasmin were undertaken at weekly intervals. We evaluated an enzyme-linked immunosorbent assay (ELISA) (using a somatic antigen of bradyzoite) to detect anti-B. caprae antibodies in caprine sera. Cysts were present in the skin biopsies of the distal parts of the leg of the infected goats from 28 DPI. From 30 to 360 DPI, results showed that the APPs concentrations including SAA, Hp, fibrinogen and ceruloplasmin were enhanced in the serum of infected goats. However, there were some variation in hematological parameters; the differences were not significant with those of the normal values. Some variations were seen in the levels of specific antibodies against this parasite and they had correlation with some hematological parameters and acute-phase proteins.
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Sankaran-Walters S, Macal M, Grishina I, Nagy L, Goulart L, Coolidge K, Li J, Fenton A, Williams T, Miller MK, Flamm J, Prindiville T, George M, Dandekar S. Sex differences matter in the gut: effect on mucosal immune activation and inflammation. Biol Sex Differ 2013; 4:10. [PMID: 23651648 PMCID: PMC3652739 DOI: 10.1186/2042-6410-4-10] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 04/11/2013] [Indexed: 01/11/2023] Open
Abstract
Background Women and men have diverse responses to many infectious diseases. These differences are amplified following menopause. However, despite extensive information regarding the effects of sex hormones on immune cells, our knowledge is limited regarding the effects of sex and gender on the function of the mucosal immune system. Sex differences also manifest in the prevalence of gut associated inflammatory and autoimmune disorders, including Crohn’s disease, ulcerative colitis and Celiac disease. It is thus hypothesized that a baseline sex-associated difference in immune activation may predispose women to inflammation-associated disease. Methods Peripheral blood samples and small intestinal biopsies were obtained from 34 healthy men and women. Immunophenotypic analysis of isolated lymphocytes was performed by flow cytometry. Oligonucleotide analysis was used to study the transcriptional profile in the gut mucosal microenvironment while real-time PCR analysis was utilized to identify differential gene expression in isolated CD4+ T cells. Transcriptional analysis was confirmed by protein expression levels for genes of interest using fluorescent immunohistochemistry. Data was analyzed using the GraphPad software package. Results Women had higher levels of immune activation and inflammation-associated gene expression in gut mucosal samples. CD4+ and CD8+ T cells had a significantly higher level of immune activation-associated phenotype in peripheral blood as well as in gut associated lymphoid tissue along with higher levels of proliferating T cells. CD4+ T cells that showed upregulation of IL1β as well as the TH17 pathway-associated genes contributed a large part of the inflammatory profile. Conclusion In this study, we demonstrated an upregulation in gene expression related to immune function in the gut microenvironment of women compared to men, in the absence of disease or pathology. Upon closer investigation, CD4+ T cell activation levels were higher in the LPLs in women than in men. Sex differences in the mucosal immune system may predispose women to inflammation-associated diseases that are exacerbated following menopause. Our study highlights the need for more detailed analysis of the effects of sex differences in immune responses at mucosal effector sites.
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Affiliation(s)
- Sumathi Sankaran-Walters
- Department of Medical Microbiology and Immunology, University of CA Davis Health System, 5605A GBSF, 451 Health Sciences Drive, Davis, CA 95616, USA.
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Bolego C, Cignarella A, Staels B, Chinetti-Gbaguidi G. Macrophage function and polarization in cardiovascular disease: a role of estrogen signaling? Arterioscler Thromb Vasc Biol 2013; 33:1127-34. [PMID: 23640494 DOI: 10.1161/atvbaha.113.301328] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Macrophages are plastic and versatile cells adapting their function/phenotype to the microenvironment. Distinct macrophage subpopulations with different functions, including classically (M1) and (M2) activated macrophages, have been described. Reciprocal skewing of macrophage polarization between the M1 and M2 state is a process modulated by transcription factors, such as the nuclear peroxisome proliferator-activated receptors. However, whether the estrogen/estrogen receptor pathways control the balance between M1/M2 macrophages is only partially understood. Estrogen-dependent effects on the macrophage system may be regarded as potential targets of pharmacological approaches to protect postmenopausal women from the elevated risk of cardiovascular disease.
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Affiliation(s)
- Chiara Bolego
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua, Italy
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Monitoring dendritic cell and cytokine biomarkers during remission prior to relapse in patients with FLT3-ITD acute myeloid leukemia. Ann Hematol 2013; 92:1079-90. [PMID: 23616009 PMCID: PMC3701796 DOI: 10.1007/s00277-013-1744-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Accepted: 03/25/2013] [Indexed: 12/29/2022]
Abstract
Relapse occurs frequently after treatment of acute myeloid leukemia (AML) patients with the FMS-like tyrosine kinase 3-internal tandem duplication (ITD) mutation. The availability of immunologic biomarkers to predict patients at high risk could allow clinicians to accelerate alternative treatments such as stem cell transplantation, immunotherapy, or novel drugs. We have previously reported that first diagnostic (FD) ITD(+) AML showed immunophenotypic and functional characteristics of arrested dendritic cell (DC) precursors. In this study, we show that the high frequency of precursor DCs in 16 FD ITD(+) AML samples (Lin(-)/HLA-DR(+)/CD11c(+)/CD123(+)) was associated with a lack of terminal DCs (myeloid DCs: BDCA-1(+) or BDCA-3(+); plasmacytoid DC: BDCA-2(+)). We further evaluated prospectively the peripheral blood complete remission (CR) samples obtained from 11 ITD(+) AML patients after chemotherapy regarding the frequency of DCs and their pattern of cytokine production. Whereas the aberrant frequencies of precursor and terminal plasmacytoid DCs resolved during remission, the myeloid DC compartment did not fully recover. For an available cohort of patients (n = 4) who could be monitored over a period of >15 months after FD, we identified IL-10, TNF-α, IL-6, and IL-1β as cytokines produced by the CR samples at high levels a few months prior to relapse. Cell-free supernatant of an FD ITD(+) AML sample stimulated monocytes obtained from two healthy donors to secrete IL-10, TNF-α, IL-6, and IL-1β. Thus, we hypothesize that ITD(+) AML minimal residual disease can act directly as dysfunctional antigen-presenting cells or indirectly by production of factors that convert monocytes into myeloid-derived suppressor cells secreting cytokines that promote immune evasion. Monitoring these immunologic biomarkers could improve prediction of relapse.
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Yamada A, Arakaki R, Kudo Y, Ishimaru N. Targeting IL-1 in Sjögren's syndrome. Expert Opin Ther Targets 2013; 17:393-401. [PMID: 23320392 DOI: 10.1517/14728222.2013.754427] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION IL-1 plays key roles in the biological functions of various cells. In particular, many roles of IL-1 in the immune system have been discovered by numerous studies. This review focuses on the association of IL-1 with the pathogenesis of autoimmunity. AREAS COVERED An overview of the biological functions of the IL-1 family and the IL-1 receptors (IL-1Rs), including the maintenance of systemic or local homeostasis, and the signaling pathway through IL-1/IL-1R in various immune systems are described. Several functions of IL-1 in the pathogenesis of Sjögren's syndrome (SS) have been demonstrated with a focus on the immune responses and target tissues in SS. In addition to the role of IL-1 in the immune responses in SS, the function of IL-1 in ocular mucosa lesions in SS has been described. Lastly, there is an overview of possible therapeutic strategies for IL-1 inhibition in SS. EXPERT OPINION IL-1 plays critical roles in the onset and development of SS by controlling systemic or local immune responses and maintaining the survival and mucosal defense of target epithelial cells. The inhibition of the pathogenic functions of IL-1 may be beneficial for treating SS.
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Affiliation(s)
- Akiko Yamada
- Institute of Health Biosciences, Department of Oral Molecular Pathology, The University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima, 770-8504, Japan
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Cabiati M, Sabatino L, Caruso R, Caselli C, Prescimone T, Giannessi D, Del Ry S. Gene expression of C-type natriuretic peptide and of its specific receptor NPR-B in human leukocytes of healthy and heart failure subjects. Peptides 2012; 37:240-6. [PMID: 22884919 DOI: 10.1016/j.peptides.2012.07.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Revised: 07/27/2012] [Accepted: 07/27/2012] [Indexed: 11/25/2022]
Abstract
C-type natriuretic peptide (CNP), a member of the family of natriuretic peptides, is synthesized and secreted from monocytes and macrophages that resulted to be a source of CNP at inflammatory sites. This suggests that special attention should be focused on the possible role of CNP in the immune system, in addition to its effects on the cardiovascular system. The aim of this study was to evaluate the possibility of measuring the mRNA expression of CNP and NPR-B, its specific receptor, in human whole blood samples of healthy (N; n=7) and heart failure (HF; n=7) subjects by Real-Time PCR (RT-PCR). Total RNA was extracted from leukocytes with QIAamp RNA Blood Kit and/or with PAXgene Blood RNA Kit. RT-PCR was performed and optimized for each primer. The experimental results were normalized with the three most stably expressed genes. CNP and NPR-B expression trend was similar in both fresh and frozen human whole blood. Significant higher levels of CNP and NPR-B mRNA expression were found in HF patients with respect to controls (CNP: N=1.23±0.33 vs. HF=6.54±2.09 p=0.027; NPR-B: N=0.85±0.23 vs. HF=5.31±1.98 p=0.04). A significant correlation between CNP and NPR-B (r=0.86, p<0.0001) was observed. Further studies are needed to clarify the pathophysiological properties of this peptide but the possibility to measure CNP and NPR-B mRNA expression in human leukocytes with a fast and easy procedure is a useful starting point for future investigation devoted to better understand the biomolecular processes associated to different diseases.
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Affiliation(s)
- M Cabiati
- CNR Institute of Clinical Physiology, Laboratory of Cardiovascular Biochemistry, Pisa, Italy
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Guha D, Nagilla P, Redinger C, Srinivasan A, Schatten GP, Ayyavoo V. Neuronal apoptosis by HIV-1 Vpr: contribution of proinflammatory molecular networks from infected target cells. J Neuroinflammation 2012; 9:138. [PMID: 22727020 PMCID: PMC3425332 DOI: 10.1186/1742-2094-9-138] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Accepted: 05/19/2012] [Indexed: 01/13/2023] Open
Abstract
Background Human immunodeficiency virus type 1 (HIV-1) induces neuronal dysfunction through host cellular factors and viral proteins including viral protein R (Vpr) released from infected macrophages/microglia. Vpr is important for infection of terminally differentiated cells such as macrophages. The objective of this study was to assess the effect of Vpr in the context of infectious virus particles on neuronal death through proinflammatory cytokines released from macrophages. Methods Monocyte-derived macrophages (MDM) were infected with either HIV-1 wild type (HIV-1wt), Vpr deleted mutant (HIV-1∆Vpr) or mock. Cell lysates and culture supernatants from MDMs were analyzed for the expression and release of proinflammatory cytokines by quantitative reverse transcription-PCR and enzyme-linked immunosorbent assay respectively. Mitogen-activated protein kinases (MAPK) were analyzed in activated MDMs by western blots. Further, the effect of Vpr on neuronal apoptosis was examined using primary neurons exposed to culture supernatants from HIV-1wt, HIV-1∆Vpr or mock-infected MDMs by Annexin-V staining, MTT and Caspase - Glo® 3/7 assays. The role of interleukin (IL)-1β, IL-8 and tumor necrosis factor (TNF)-α on neuronal apoptosis was also evaluated in the presence or absence of neutralizing antibodies against these cytokines. Results HIV-1∆Vpr-infected MDMs exhibited reduced infection over time and specifically a significant downregulation of IL-1β, IL-8 and TNF-α at the transcriptional and/or protein levels compared to HIV-1wt-infected cultures. This downregulation was due to impaired activation of p38 and stress-activated protein kinase (SAPK)/c-Jun N-terminal kinase (JNK) in HIV-1∆Vpr-infected MDMs. The association of SAPK/JNK and p38 to IL-1β and IL-8 production was confirmed by blocking MAPKs that prevented the elevation of IL-1β and IL-8 in HIV-1wt more than in HIV-1∆Vpr-infected cultures. Supernatants from HIV-1∆Vpr-infected MDMs containing lower concentrations of IL-1β, IL-8 and TNF-α as well as viral proteins showed a reduced neurotoxicity compared to HIV-1wt-infected MDM supernatants. Reduction of neuronal death in the presence of anti-IL-1β and anti-IL-8 antibodies only in HIV-1wt-infected culture implies that the effect of Vpr on neuronal death is in part mediated through released proinflammatory factors. Conclusion Collectively, these results demonstrate the ability of HIV-1∆Vpr to restrict neuronal apoptosis through dysregulation of multiple proinflammatory cytokines in the infected target cells either directly or indirectly by suppressing viral replication.
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Affiliation(s)
- Debjani Guha
- Department of Infectious Diseases & Microbiology, Graduate School of Public Health, University of Pittsburgh, 130 DeSoto Street, Pittsburgh, PA 15261, USA
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Sotosek Tokmadzic V, Laskarin G, Mahmutefendic H, Lucin P, Mrakovcic-Sutic I, Zupan Z, Sustic A. Expression of cytolytic protein-perforin in peripheral blood lymphocytes in severe traumatic brain injured patients. Injury 2012; 43:624-31. [PMID: 20537642 DOI: 10.1016/j.injury.2010.05.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Revised: 03/25/2010] [Accepted: 05/03/2010] [Indexed: 02/02/2023]
Abstract
PURPOSE The purpose of this study was to investigate the changes of cytotoxic protein-perforin in peripheral blood lymphocytes in severe TBI patients and possible correlation between severity of TBI and perforin expression. METHODS Flow cytometry was used for simultaneous detection of intracellular perforin and cell surface antigens of peripheral blood lymphocytes of 20 severe TBI patients on day 1, 4 and 7 after the onset of injury. Peripheral blood mononuclear cells from 20 healthy volunteers were used as control. Clinical and laboratory parameters were also recorded. RESULTS There was a statistically significant decrease of perforin-positive lymphocytes including T, natural killer (NK) and NKT cells on day 4 as compared with day 1 after the brain injury or healthy controls. On day 7, perforin expression was restored in lymphocyte of cytotoxic phenotype (CD8(+) T lymphocytes, NK cells, and NKT cells) compared with day 1. High positive correlation was found between the severity of TBI and frequency of perforin-positive cells on day 4 when the occurrence of the intra-hospital infections was the highest. CONCLUSION Severe TBI significantly decreases perforin expression in T lymphocytes, NK and NKT cells, which indicate a possible mechanism underlying the high susceptibility to infections.
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Affiliation(s)
- Vlatka Sotosek Tokmadzic
- Department of Anaesthesiology, Reanimatology and Intensive Care, Medical Faculty, University of Rijeka, B. Branchetta 20/1, 51 000 Rijeka, Croatia.
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Latil A, Libon C, Templier M, Junquero D, Lantoine-Adam F, Nguyen T. Hexanic lipidosterolic extract ofSerenoa repensinhibits the expression of two key inflammatory mediators, MCP-1/CCL2 and VCAM-1,in vitro. BJU Int 2012; 110:E301-7. [DOI: 10.1111/j.1464-410x.2012.11144.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lapchak PA. Identifying Vascular Targets to Treat Hemorrhagic Stroke. Transl Stroke Res 2012. [DOI: 10.1007/978-1-4419-9530-8_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Aldaba-Muruato LR, Moreno MG, Shibayama M, Tsutsumi V, Muriel P. Protective effects of allopurinol against acute liver damage and cirrhosis induced by carbon tetrachloride: modulation of NF-κB, cytokine production and oxidative stress. Biochim Biophys Acta Gen Subj 2011; 1820:65-75. [PMID: 22056511 DOI: 10.1016/j.bbagen.2011.09.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 08/15/2011] [Accepted: 09/06/2011] [Indexed: 01/05/2023]
Abstract
BACKGROUND The aim of this work was to evaluate the hepatoprotective ability of allopurinol to prevent the liver injury induced by carbon tetrachloride (CCl(4)). METHODS Acute liver damage was induced with CCl(4) (4g/kg, by gavage); allopurinol (50mg/kg, by gavage) was given 1h before and 1h after CCl(4) intoxication and two daily doses for the previous three days. Cirrhosis was established by CCl(4) administration (0.4g/kg, i. p. three times a week, eight weeks); allopurinol was administered (100mg/kg, by gavage, daily) during the long-term of CCl(4) treatment. Alanine aminotransferase (ALT), γ-glutamyl transpeptidase (γ-GTP), xanthine oxidase (XO), lipid peroxidation, reduced and oxidized glutathione (GSH, GSSG, respectively), hydroxyproline and histopathologycal analysis were performed. Nuclear factor-κB (NF-κB), pro-inflammatory and anti-inflammatory cytokines, transforming growth factor-β (TGF-β) and metalloproteinase-13 (MMP-13) were analyzed by Western blots. RESULTS Acute injury increased ALT and γ-GTP activities, additionally enhanced NF-κB nuclear translocation and cytokines production such as tumor necrosis factor-α, interleukine-1β, and interleukine-6. Allopurinol partially prevented these effects, while increased interleukine-10. Acute and chronic CCl(4) treatments altered the levels of XO activity, lipid peroxidation, and GSH/GSSG ratio, while these remained within normal range with allopurinol administration. Necrosis, fibrosis and TGF-β production induced in chronic injury were partially prevented by allopurinol, interestingly, this drug induced MMP-13 activity. CONCLUSIONS Allopurinol possesses antioxidant, anti-inflammatory and antifibrotic properties, probably by its capacity to reduce NF-κB nuclear translocation and TGF-β expression, as well as to induce MMP-13. General significance Allopurinol might be effective treatment of liver diseases.
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Cornelius RM, Macri J, Brash JL. Interfacial interactions of apolipoprotein AI and high density lipoprotein: Overlooked phenomena in blood-material contact. J Biomed Mater Res A 2011; 99:109-15. [DOI: 10.1002/jbm.a.33169] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 04/28/2011] [Accepted: 04/29/2011] [Indexed: 02/05/2023]
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Neylan TC, Sun B, Rempel H, Ross J, Lenoci M, O’Donovan A, Pulliam L. Suppressed monocyte gene expression profile in men versus women with PTSD. Brain Behav Immun 2011; 25:524-31. [PMID: 21145962 PMCID: PMC3039086 DOI: 10.1016/j.bbi.2010.12.001] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Revised: 11/30/2010] [Accepted: 12/01/2010] [Indexed: 01/12/2023] Open
Abstract
There have been several attempts to use gene microarrays from peripheral blood mononuclear cells to identify new biological pathways or targets for therapy in Posttraumatic Stress Disorder (PTSD). The few studies conducted to date have yielded an unclear pattern of findings, perhaps reflecting the use of heterogeneous samples of circulating immune cells for analysis. We used gene microarrays on a homogeneous sample of circulating monocytes to test the hypothesis that chronic PTSD would be associated with elevated inflammatory activity and to identify new pathways dysregulated in the disorder. Forty-nine men (24 PTSD+ and 25 age-matched trauma-exposed PTSD- controls) and 18 women (10 PTSD+ and 8 age-matched PTSD- controls) were recruited. Gene expression microarray analysis was performed on CD14+ monocytes, immune cells that initiate and respond to inflammatory signaling. Male subjects with PTSD had an overall pattern of under-expression of genes on monocytes (47 under-expressed versus 4 over-expressed genes). A rigorous correction for multiple comparisons and verification with qPCR showed that of only 3 genes that were differentially expressed, all were under-expressed. There was no transcriptional evidence of chronic inflammation in male PTSD+ subjects. In contrast, preliminary data from our pilot female PTSD+ subjects showed a relatively balanced pattern of increased and decreased expression of genes and an increase in activity of pathways related to immune activation. The results indicate differential patterns of monocyte gene expression in PTSD, and the preliminary data from our female pilot subjects are suggestive of gender dimorphism in biologic pathways activated in PTSD. Changes in immune cell gene expression may contribute to medical morbidity in PTSD.
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Affiliation(s)
- Thomas C. Neylan
- Veterans Affairs Medical Center, San Francisco, CA
,Northern California Institute for Research and Education, University of California, San Francisco, CA
,Department of Psychiatry, University of California, San Francisco, CA
| | - Bing Sun
- Veterans Affairs Medical Center, San Francisco, CA
,Northern California Institute for Research and Education, University of California, San Francisco, CA
| | - Hans Rempel
- Veterans Affairs Medical Center, San Francisco, CA
,Northern California Institute for Research and Education, University of California, San Francisco, CA
| | - Jessica Ross
- Veterans Affairs Medical Center, San Francisco, CA
,Department of Psychiatry, University of California, San Francisco, CA
| | - Maryann Lenoci
- Veterans Affairs Medical Center, San Francisco, CA
,Northern California Institute for Research and Education, University of California, San Francisco, CA
| | - Aoife O’Donovan
- Veterans Affairs Medical Center, San Francisco, CA
,Northern California Institute for Research and Education, University of California, San Francisco, CA
,Department of Psychiatry, University of California, San Francisco, CA
| | - Lynn Pulliam
- Veterans Affairs Medical Center, San Francisco, CA
,Northern California Institute for Research and Education, University of California, San Francisco, CA
,Department of Laboratory Medicine, University of California, San Francisco, CA
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Anderson JM, McNally AK. Biocompatibility of implants: lymphocyte/macrophage interactions. Semin Immunopathol 2011; 33:221-33. [DOI: 10.1007/s00281-011-0244-1] [Citation(s) in RCA: 133] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Accepted: 01/10/2011] [Indexed: 01/05/2023]
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Lapchak PA, Wu Q. Vascular Dysfunction in Brain Hemorrhage: Translational Pathways to Developing New Treatments from Old Targets. JOURNAL OF NEUROLOGY & NEUROPHYSIOLOGY 2011; 2011:S1-e001. [PMID: 22400125 PMCID: PMC3293216 DOI: 10.4172/2155-9562.s1-e001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Hemorrhagic stroke which is a form of stroke that affects 20% of all stroke patients is a devastating condition for which new treatments must be developed. Current treatment methods are quite insufficient to reduce long term morbidity and high mortality rate, up to 50%, associated with bleeding into critical brain structures, into ventricular spaces and within the subarachnoid space. During the last 10-15 years, significant advances in the understanding of important mechanisms that contribute to cell death and clinical deficits have been made. The most important observations revolve around a key set of basic mechanisms that are altered in brain bleeding models, including activation of membrane metalloproteinases, oxidative stress and both inflammatory and coagulation pathways. Moreover, it is now becoming apparent that brain hemorrhage can activate the ischemic stroke cascade in neurons, glial cells and the vascular compartment. The activation of multiple pathways allows comes the opportunity to intervene pharmacologically using monotherapy or combination therapy. Ultimately, combination therapy or pleiotropic compounds with multi-target activities should prove to be more efficacious than any single therapy alone. This article provides a comprehensive look at possible targets for small molecule intervention as well as some new approaches that result in metabolic down-regulation or inhibition of multiple pathways simultaneously.
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Affiliation(s)
- Paul A. Lapchak
- Director of Translational Research, Cedars-Sinai Medical Center, Department of Neurology, Davis Research Building, D- 2091, 110 N, George Burns Road, Los Angeles, CA 90048 USA
| | - Qiang Wu
- Project Scientist, Cedars-Sinai Medical Center, Department of Neurology, Davis Research Building, D-2094E, 110 N. George Burns Road, Los Angeles, CA 90048 USA
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Anglin RE, Rosebush PI, Mazurek MF. Neuroleptic malignant syndrome: a neuroimmunologic hypothesis. CMAJ 2010; 182:E834-8. [PMID: 20696799 DOI: 10.1503/cmaj.091442] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Rebecca E Anglin
- Department of Psychiatry & Behavioural Neurosciences, McMaster University, Hamilton, Ont., Canada
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Opapeju F, Rademacher M, Payne R, Krause D, Nyachoti C. Inflammation-associated responses in piglets induced with post-weaning colibacillosis are influenced by dietary protein level. Livest Sci 2010. [DOI: 10.1016/j.livsci.2010.02.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Muehlenbein MP, Hirschtick JL, Bonner JZ, Swartz AM. Toward quantifying the usage costs of human immunity: Altered metabolic rates and hormone levels during acute immune activation in men. Am J Hum Biol 2010; 22:546-56. [DOI: 10.1002/ajhb.21045] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Ding Y, Huang Y, Song N, Gao X, Yuan S, Wang X, Cai H, Fu Y, Luo Y. NFAT1 mediates placental growth factor-induced myelomonocytic cell recruitment via the induction of TNF-alpha. THE JOURNAL OF IMMUNOLOGY 2010; 184:2593-601. [PMID: 20097868 DOI: 10.4049/jimmunol.0902378] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Recruitment of bone marrow-derived myelomonocytic cells plays a fundamental role in tumor angiogenesis and metastasis. Placental growth factor (PlGF) is a potent cytokine that can attract myelomonocytic cells to the tumor. However, the underlying mechanism remains obscure. In this study, we demonstrate that tumor-derived PlGF activates NFAT1 via vascular endothelial growth factor receptor 1 in both murine and human myelomonocytic cells. Activation of NFAT1 is crucial for PlGF-induced myelomonocytic cell recruitment as shown by the in vitro transwell migration assay, transendothelial migration assay, and PlGF-overexpressing tumor models in mice, respectively. TNF-alpha is upregulated by PlGF in myelomonocytic cells in an NFAT1-dependent manner, which in turn contributes to PlGF-induced myelomonocytic cell recruitment. Blockade of TNF-alpha expression by RNA interference or neutralization of secreted TNF-alpha with its Ab attenuates PlGF-induced myelomonocytic cell migration and transendothelial migration. Furthermore, the inhibitory effect of NFAT1 RNA interference on PlGF function is rescued by exogenously added TNF-alpha. Taken together, we demonstrate that NFAT1 mediates PlGF-induced myelomonocytic cell recruitment via the induction of TNF-alpha. Our present studies discover a novel role of the NFAT1-TNF-alpha pathway in tumor inflammation, which may provide potential targets to diversify current cancer therapy.
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Affiliation(s)
- Yanping Ding
- National Engineering Laboratory for Antitumor Protein Therapeutics, Beijing Key Laboratory for Protein Therapeutics, and Cancer Biology Laboratory, Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing, People's Republic of China
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Mukhopadhyay R, Mishra MK, Basu A, Bishayi B. Effect of particulate antigenic stimulation or in vivo administration of interleukin-6 on the level of steroidogenic enzymes in adrenal glands and lymphoid tissues of mice with parallel alteration in endogenous inflammatory cytokine level. Cell Immunol 2010; 261:23-8. [DOI: 10.1016/j.cellimm.2009.10.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Revised: 07/21/2009] [Accepted: 10/13/2009] [Indexed: 10/20/2022]
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45
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Lim S, Ryu J, Shin JA, Shin MJ, Ahn YK, Kim JJ, Han KH. Tumor Necrosis Factor-α Potentiates RhoA-Mediated Monocyte Transmigratory Activity In Vivo at a Picomolar Level. Arterioscler Thromb Vasc Biol 2009; 29:2138-45. [DOI: 10.1161/atvbaha.109.195735] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Objective—
The serum level of tumor necrosis factor-α (TNF-α) is in the picomolar range under inflammatory conditions. We investigated whether these picomolar levels of TNF-α directly modulate the functional activities of circulating monocytes.
Methods and Results—
In THP-1 monocytes treated with TNF-α (1 to 100 pmol/L/30 minutes), cytosolic RhoA small GTPase rapidly translocated to the plasma membrane via functionally active ezrin/radixin/moesin (ERM) complex, a cytoskeletal linker, and subsequent actin polymerization through NF-κB activation. The threonine phosphorylation of ERM was accomplished by the activation of TNF receptor type I (TNFRI) and signaling pathways involving PI3K and an atypical PKC; ie, PKCζ. The TNF-α-treated monocytes (10 pmol/L) displayed more potent and prolonged generation of GTP-bound RhoA in response to secondary stimulation with RhoA-activating monocyte chemoattractant protein-1 (MCP-1). Clearly, human circulating monocytes preconditioned by 10 pmol/L TNF-α augmented MCP-1–mediated chemotaxis and firm adhesion on VCAM-1 and ICAM-1 in vitro and ex vivo. The elevation of serum TNF-α (>5 pmol/L within 16 hours), which was introduced by intraperitoneal injection of mouse-specific TNF-α to C57/BL6 mice, enhanced the number of CD80+ monocytes transmigrating to the JE/MCP-1–injected intraperitoneal space.
Conclusions—
Picomolar concentrations of TNF-α in the bloodstream may prime the RhoA-dependent activities of circulating monocytes to enhance recruitment to active inflammatory foci.
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Affiliation(s)
- Sunny Lim
- From the Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jewon Ryu
- From the Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jin-Ae Shin
- From the Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Min-Jung Shin
- From the Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Yeong Ki Ahn
- From the Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jae Joong Kim
- From the Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Ki Hoon Han
- From the Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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Gender effects in relapsing–remitting multiple sclerosis: Correlation between clinical variables and gene expression molecular pathways. J Neurol Sci 2009; 286:47-53. [DOI: 10.1016/j.jns.2009.06.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2009] [Revised: 05/23/2009] [Accepted: 06/22/2009] [Indexed: 11/22/2022]
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47
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Chizzolini C, Dayer JM, Miossec P. Cytokines in chronic rheumatic diseases: is everything lack of homeostatic balance? Arthritis Res Ther 2009; 11:246. [PMID: 19849823 PMCID: PMC2787274 DOI: 10.1186/ar2767] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Biological systems have powerful inbuilt mechanisms of control intended to maintain homeostasis. Cytokines are no exception to this rule, and imbalance in cytokine activities may lead to inflammation with subsequent tissue and organ damage, altered function, and death. Balance is achieved through multiple, not mutually exclusive, mechanisms including the simultaneous production of agonist and antagonistic cytokines, expression of soluble receptors or membrane-bound nonsignaling receptors, priming and/or reprogramming of signaling, and uncoupling of ligand/receptor pairing from signal transduction. Insight into cytokine balance is leading to novel therapeutic approaches particularly in autoimmune conditions, which are intimately linked to a dysregulated cytokine production.
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Affiliation(s)
- Carlo Chizzolini
- Department of Immunology and Allergy, University Hospital and School of Medicine, Geneva University Hospital, 1211 Geneva 14, Switzerland.
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The role of the prostatic stroma in chronic prostatitis/chronic pelvic pain syndrome. Inflamm Res 2009; 58:829-36. [DOI: 10.1007/s00011-009-0086-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Revised: 08/17/2009] [Accepted: 08/19/2009] [Indexed: 11/25/2022] Open
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49
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A novel brain injury mechanism after intracerebral hemorrhage: the interaction between heme products and the immune system. Med Hypotheses 2009; 74:63-6. [PMID: 19716661 DOI: 10.1016/j.mehy.2009.08.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Accepted: 08/01/2009] [Indexed: 01/02/2023]
Abstract
In this paper we hypothesize a novel mechanism by which brain injury occurs after intracerebral hemorrhage. We propose the following mechanism: (1) heme that is derived from extravasated erythrocytes is degraded into bilirubin and bilirubin oxidation products (BOXes). (2) Bilirubin and BOXes activate microglia and astrocytes, which are cells with immune functions in the brain. This activation leads to release of cytokines and activation of leukocyte adhesion molecules on the luminal surface of cerebral endothelial cells. (3) Leukocytes then traffic into the brain. (4) Leukocytes, activated glial cells and cytokines contribute to injury processes. We present preliminary data in support of our hypothesis that BOXes activate glia.
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Chang DT, Colton E, Anderson JM. Paracrine and juxtacrine lymphocyte enhancement of adherent macrophage and foreign body giant cell activation. J Biomed Mater Res A 2009; 89:490-8. [PMID: 18437695 DOI: 10.1002/jbm.a.31981] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Lymphocytes have been shown to be involved in modulating monocyte and macrophage behavior in the foreign body reaction. Lymphocyte effects on biomaterial-adherent macrophage and foreign body giant cell (FBGC) behavior were further investigated by culturing monocytes alone or together with lymphocytes, either in direct co-cultures or indirectly in transwells, on a series of polyethylene terephthalate-based photograft co-polymerized material surfaces displaying distinct hydrophobic, hydrophilic/neutral, hydrophilic/anionic, and hydrophilic/ cationic chemistries. After periods of 3, 7, and 10 days, cytokine production was quantified by enzyme-linked immunosorbent assay and normalized to adherent macrophage/FBGC density to yield a measure of adherent macrophage/FBGC activation. Interactions with lymphocytes enhanced adherent macrophage and FBGC production of pro-inflammatory IL-1beta, TNF-alpha, IL-6, IL-8, and MIP-1beta on the hydrophobic and hydrophilic/cationic surfaces but had no effect on anti-inflammatory IL-10 production indicating lymphocytes promote a pro-inflammatory response to biomaterials. Lymphocytes also did not significantly influence MMP-9, TIMP-1, and TIMP-2 production. Interactions through indirect (paracrine) signaling showed a significant effect in enhancing adherent macrophage/FBGC activation at early time points whereas interactions via direct (juxtacrine) mechanisms dominated at later time points. Biomaterial surface chemistries differentially affected the observed responses as hydrophilic/neutral and hydrophilic/anionic surfaces, evoked the highest levels of activation relative to the other surfaces but did not facilitate lymphocyte enhancement of adherent macrophage/FBGC activation.
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Affiliation(s)
- David T Chang
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA
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