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Pădureanu V, Dop D, Caragea DC, Rădulescu D, Pădureanu R, Forțofoiu MC. Cardiovascular and Neurological Diseases and Association with Helicobacter Pylori Infection-An Overview. Diagnostics (Basel) 2024; 14:1781. [PMID: 39202269 PMCID: PMC11353373 DOI: 10.3390/diagnostics14161781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Revised: 08/05/2024] [Accepted: 08/14/2024] [Indexed: 09/03/2024] Open
Abstract
This article investigates the link between Helicobacter pylori (H. pylori) infection and cardiovascular and neurological disorders. Recent research suggests that H. pylori may play a role in cardiovascular diseases like atherosclerosis, myocardial infarction, and stroke, as well as neurological diseases including Alzheimer's disease, multiple sclerosis, and Parkinson's disease. Cardiovascular Diseases: H. pylori induces endothelial dysfunction and chronic inflammation, promoting atherosclerotic plaque formation and other cardiac complications. High infection prevalence in cardiovascular patients implies that systemic inflammation from H. pylori accelerates disease progression. Eradication therapies combined with anti-inflammatory and lipid-lowering treatments may reduce cardiovascular risk. Neurological Diseases: H. pylori may contribute to Alzheimer's, multiple sclerosis, and Parkinson's through systemic inflammation, neuroinflammation, and autoimmune responses. Increased infection prevalence in these patients suggests bacterial involvement in disease pathogenesis. The eradication of H. pylori could reduce neuroinflammation and improve outcomes. Discussions and Future Research: Managing H. pylori infection in clinical practice could impact public health and treatment approaches. Further research is needed to clarify these relationships. Longitudinal and mechanistic studies are essential to fully understand H. pylori's role in these conditions. Conclusions: H. pylori infection is a potential risk factor for various cardiovascular and neurological conditions. Additional research is critical for developing effective prevention and treatment strategies. Targeted therapies, including H. pylori eradication combined with anti-inflammatory treatments, could improve clinical outcomes. These findings highlight the need for an integrated clinical approach to include H. pylori evaluation and treatment.
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Affiliation(s)
- Vlad Pădureanu
- Department of Internal Medicine, University of Medicine and Pharmacy Craiova, 200349 Craiova, Romania; (V.P.); (M.-C.F.)
| | - Dalia Dop
- Department of Pediatrics, University of Medicine and Pharmacy Craiova, 200349 Craiova, Romania;
| | - Daniel Cosmin Caragea
- Department of Nephrology, University of Medicine and Pharmacy Craiova, 200349 Craiova, Romania;
| | - Dumitru Rădulescu
- Department of Surgery, University of Medicine and Pharmacy Craiova, 200349 Craiova, Romania
| | - Rodica Pădureanu
- Department of Internal Medicine, University of Medicine and Pharmacy Craiova, 200349 Craiova, Romania; (V.P.); (M.-C.F.)
| | - Mircea-Cătălin Forțofoiu
- Department of Internal Medicine, University of Medicine and Pharmacy Craiova, 200349 Craiova, Romania; (V.P.); (M.-C.F.)
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Zhu W, Liu D, Lu Y, Sun J, Zhu J, Xing Y, Ma X, Wang Y, Ji M, Jia Y. PHKG2 regulates RSL3-induced ferroptosis in Helicobacter pylori related gastric cancer. Arch Biochem Biophys 2023; 740:109560. [PMID: 36948350 DOI: 10.1016/j.abb.2023.109560] [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: 01/09/2023] [Revised: 02/19/2023] [Accepted: 03/05/2023] [Indexed: 03/24/2023]
Abstract
Ferroptosis is a newly discovered form of regulatory cell death induced by iron-dependent lipid peroxidation. Infection with Helicobacter pylori (H. pylori) is regarded as a high-risk factor for the development of gastric cancer (GC) and is associated with an increase in the levels of reactive oxygen species with activation of oncogenic signaling pathways. However, whether GC arising in the context of infection with H. pylori is correlated with ferroptosis is still unknown. In this study, we demonstrate that H. pylori infection increased the sensitivity of GC cells to RSL3 (RAS-selective lethal3)-induced ferroptosis. The molecular subtypes mediated by ferroptosis-related genes are associated with tumor microenvironment (TME) cell infiltration and patient survival. Importantly, we identified that the expression of phosphorylase kinase G2 (PHKG2) was remarkably correlated with H. pylori infection, metabolic biological processes, patient survival and therapy response. We further found the mechanism of H. pylori-induced cell sensitivity to ferroptosis, which involves PHKG2 regulation of the lipoxygenase enzyme Arachidonate 5-Lipoxygenase (ALOX5). In conclusion, PHKG2 facilitates RSL3-induced ferroptosis in H. pylori-positive GC cells by promoting ALOX5 expression. These findings may contribute to a better understanding of the unique pathogenesis of H. pylori-induced GC and allow for maximum efficacy of genetic, cellular, and immune therapies for controlling ferroptosis in diverse contexts.
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Affiliation(s)
- Wenshuai Zhu
- Research Center of Basic Medicine, Jinan Central Hospital, Shandong University, Jinan, 250013, People's Republic of China; Research Center of Basic Medicine, Jinan Central Hospital, Shandong First Medical University, Jinan, 250013, People's Republic of China
| | - Duanrui Liu
- Research Center of Basic Medicine, Jinan Central Hospital, Shandong University, Jinan, 250013, People's Republic of China; Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250013, People's Republic of China
| | - Yi Lu
- Research Center of Basic Medicine, Jinan Central Hospital, Shandong First Medical University, Jinan, 250013, People's Republic of China
| | - Jingguo Sun
- Research Center of Basic Medicine, Jinan Central Hospital, Shandong University, Jinan, 250013, People's Republic of China
| | - Jingyu Zhu
- Department of Gastroenterology, Jinan Central Hospital, Shandong First Medical University, Jinan, 250013, People's Republic of China
| | - Yuanxin Xing
- Research Center of Basic Medicine, Jinan Central Hospital, Shandong University, Jinan, 250013, People's Republic of China; Research Center of Basic Medicine, Jinan Central Hospital, Shandong First Medical University, Jinan, 250013, People's Republic of China
| | - Xiaoli Ma
- Research Center of Basic Medicine, Jinan Central Hospital, Shandong University, Jinan, 250013, People's Republic of China; Research Center of Basic Medicine, Jinan Central Hospital, Shandong First Medical University, Jinan, 250013, People's Republic of China
| | - Yunshan Wang
- Research Center of Basic Medicine, Jinan Central Hospital, Shandong University, Jinan, 250013, People's Republic of China; Research Center of Basic Medicine, Jinan Central Hospital, Shandong First Medical University, Jinan, 250013, People's Republic of China
| | - Mingyu Ji
- Medical Research & Laboratory Diagnostic Center, Jinan Central Hospital, Shandong University, Jinan, 250013, People's Republic of China.
| | - Yanfei Jia
- Research Center of Basic Medicine, Jinan Central Hospital, Shandong University, Jinan, 250013, People's Republic of China; Research Center of Basic Medicine, Jinan Central Hospital, Shandong First Medical University, Jinan, 250013, People's Republic of China.
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Evaluation of Susceptibility of the Human Pathogen Helicobacter pylori to the Antibiotic Capreomycin. ScientificWorldJournal 2022; 2022:8924023. [PMID: 35958801 PMCID: PMC9357814 DOI: 10.1155/2022/8924023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 11/23/2022] Open
Abstract
Helicobacter pylori infection causes gastritis, peptic ulcer disease, mucosa-associated lymphoid tissue lymphoma, and gastric cancer and can also promote thrombosis. It is estimated that approximately 4.5 billion individuals are infected, thus rendering H. pylori the most prevalent microbial pathogen. Currently established regimes for antibiotic treatment are massively challenged by increasing drug resistance and the development of novel antimicrobial therapies is urgently required. The antibiotic capreomycin is clinically used against multiple drug-resistant strains of Mycobacterium tuberculosis. It targets the complex between TlyA, a hemolysin- and RNA-binding protein, and the bacterial rRNA. In this study we have explored the possible antibacterial effects of capreomycin against several strains of H. pylori and found only moderate activity which was comparable to metronidazole-resistant strains. Molecular docking of capreomycin to TlyA proteins from H. pylori and M. tuberculosis identified several residues within TlyA which interact with the drug; however, binding affinities of H. pylori– TlyA for capreomycin appear to be higher than those of Mycobacterium– TlyA. The data suggest that capreomycin may warrant further investigations into its potential use as antibiotic against H. pylori.
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Han J, Huang Z, Tang S, Lu C, Wan H, Zhou J, Li Y, Ming T, Jim Wang Z, Su X. The novel peptides ICRD and LCGEC screened from tuna roe show antioxidative activity via Keap1/Nrf2-ARE pathway regulation and gut microbiota modulation. Food Chem 2020; 327:127094. [PMID: 32454270 DOI: 10.1016/j.foodchem.2020.127094] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 05/13/2020] [Accepted: 05/16/2020] [Indexed: 02/06/2023]
Abstract
In this study, a high-throughput strategy combined with MALDI TOF/TOF-MS and Discovery Studio 2017 was developed to screen peptides with certain functions from hydrolysate. Two dominant peptides, Ile-Cys-Arg-Asp (ICRD) and Leu-Cys-Gly-Glu-Cys (LCGEC), were predicted to have antioxidant activity by Discovery Studio 2017. Then the activity in vitro of peptides had been confirmed via DPPH assay. Both two peptides decreased apoptosis induced by UVB treatment in HaCaT cells and altered Keap1/Nrf2-ARE pathway transcription. Furthermore, the antioxidant activity of LCGEC was achieved after 6-week treatment in mice via regulating the Keap1/Nrf2-ARE pathway, inhibiting the release of proinflammatory cytokines, increasing the abundance of 3-indolepropionic acid and short-chain fatty acids production in feces and modulating gut microbiota composition. This study provided two tuna roe peptides with in vitro and in vivo antioxidant activity.
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Affiliation(s)
- Jiaojiao Han
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China; School of Marine Science, Ningbo University, Ningbo, China
| | - Zhongbai Huang
- School of Marine Science, Ningbo University, Ningbo, China
| | - Shasha Tang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China; School of Marine Science, Ningbo University, Ningbo, China
| | - Chenyang Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China; School of Marine Science, Ningbo University, Ningbo, China
| | - Haitao Wan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China; School of Marine Science, Ningbo University, Ningbo, China
| | - Jun Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China; School of Marine Science, Ningbo University, Ningbo, China
| | - Ye Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China; School of Marine Science, Ningbo University, Ningbo, China
| | - Tinghong Ming
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China; School of Marine Science, Ningbo University, Ningbo, China
| | - Zaijie Jim Wang
- Department of Biopharmaceutical Sciences, University of Illinois, Chicago, USA
| | - Xiurong Su
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China; School of Marine Science, Ningbo University, Ningbo, China.
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Li B, Du P, Smith EE, Wang S, Jiao Y, Guo L, Huo G, Liu F. In vitro and in vivo evaluation of an exopolysaccharide produced by Lactobacillus helveticus KLDS1.8701 for the alleviative effect on oxidative stress. Food Funct 2019; 10:1707-1717. [PMID: 30839970 DOI: 10.1039/c8fo01920g] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Correlations between oxidative stress and degenerative diseases have been gaining increasing attention. A number of studies affirm that exopolysaccharide (EPS) produced by lactic acid bacteria (LAB) can alleviate oxidative stress and further prevent the related diseases. In our previous study, Lactobacillus helveticus KLDS1.8701 has been shown to possess high antioxidant capacity in vitro. The aim of this study was to evaluate the ameliorative effects of EPS produced by L. helveticus KLDS1.8701 on oxidative stress. Firstly, EPS was isolated from the culture of L. helveticus KLDS1.8701 and purified using DEAE-Sepharose Fast Flow chromatography. Secondly, the antioxidant capacities of EPS fractions were evaluated using in vitro methods. Thirdly, an in vivo study was performed to investigate the possible protective effects of EPS on d-galactose (d-gal)-induced liver damage and gut microbiota disorder. In vitro antioxidant activity results suggested that EPS-1 exhibited strong scavenging properties on 2,2-diphenyl-1-picrylhydrazyl radical, superoxide radical, hydroxyl radical, and chelating activity on ferrous ion. In vivo, EPS-1 supplementation significantly attenuated oxidative status such as decreased organic index, liver injury and liver oxidative stress. EPS-1 supplementation shifted the gut microbiota composition to that of the control group. In addition, the analysis of Spearman's rank correlation suggested that the protective effects of EPS correlated with manipulating the gut microbiota composition in d-gal-induced mice. These results implied that EPS-1 supplementation could mitigate hepatic oxidative stress via manipulating the gut microbiota composition and be used as a potential candidate to attenuate oxidative damage.
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Affiliation(s)
- Bailiang Li
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China.
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Kaplan M, Ates I, Yuksel M, Arikan MF, Aydog G, Turhan N, Gökbulut V, Kayacetin E. The role of the PLR-NLR combination in the prediction of the presence of Helicobacter pylori and its associated complications. Saudi J Gastroenterol 2018; 24:294-300. [PMID: 29873316 PMCID: PMC6152001 DOI: 10.4103/sjg.sjg_29_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND/AIM The aim of this study was to investigate the role of the platelet-to-lymphocyte ratio (PLR)-neutrophil-to-lymphocyte ratio (NLR) combination, in the prediction of the presence of Helicobacter pylori (HP) and its associated complications in the gastrointestinal system. PATIENTS AND METHODS In all, 1289 patients who underwent esophagogastroduodenoscopy and biopsy for HP were included in the study. RESULTS The ratio of patients with moderate and severe chronic gastritis was higher in HP (+) group than HP (-) group. The ratio of patients with levels 1-3 atrophy and intestinal metaplasia was higher in HP (+) group. Compared with HP (-) group, HP (+) had higher PLR and NLR levels. The ratio of HP (+) patients was higher in high-risk group compared with low- and medium-risk groups. HP invasion stage, the intestinal metaplasia level, and the ratio of patients with atrophy level "3" were higher in high-risk group compared with low- and medium-risk groups. Regression analysis showed that the PLR-NLR combination was an independent risk factor for both HP presence and moderate and severe chronic gastritis. CONCLUSION We found the PLR-NLR combination to be a good predictor of HP presence and gastrointestinal complications associated with HP.
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Affiliation(s)
- Mustafa Kaplan
- Department of Gastroenterology, Yuksek Ihtisas Training and Research Hospital, Ankara, Turkey,Address for correspondence: Dr. Mustafa Kaplan, Department of Gastroenterology, Turkiye Yuksek Ihtisas Training and Research Hospital, 06100 Sihhiye, Ankara, Turkey. E-mail:
| | - Ihsan Ates
- Department of Internal Medicine, Ankara Numune Training and Research Hospital, Ankara, Turkey
| | - Mahmut Yuksel
- Department of Gastroenterology, Yuksek Ihtisas Training and Research Hospital, Ankara, Turkey
| | - Mehmet F. Arikan
- Department of Internal Medicine, Ankara Numune Training and Research Hospital, Ankara, Turkey
| | - Gulden Aydog
- Department of Pathology, Yuksek Ihtisas Training and Research Hospital, Ankara, Turkey
| | - Nesrin Turhan
- Department of Pathology, Yuksek Ihtisas Training and Research Hospital, Ankara, Turkey
| | - Volkan Gökbulut
- Department of Gastroenterology, Yuksek Ihtisas Training and Research Hospital, Ankara, Turkey
| | - Ertugrul Kayacetin
- Department of Gastroenterology, Yuksek Ihtisas Training and Research Hospital, Ankara, Turkey
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Kumar J, Teoh SL, Das S, Mahakknaukrauh P. Oxidative Stress in Oral Diseases: Understanding Its Relation with Other Systemic Diseases. Front Physiol 2017; 8:693. [PMID: 28959211 PMCID: PMC5603668 DOI: 10.3389/fphys.2017.00693] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 08/29/2017] [Indexed: 12/18/2022] Open
Abstract
Oxidative stress occurs in diabetes, various cancers, liver diseases, stroke, rheumatoid arthritis, chronic inflammation, and other degenerative diseases related to the nervous system. The free radicals have deleterious effect on various organs of the body. This is due to lipid peroxidation and irreversible protein modification that leads to cellular apoptosis or programmed cell death. During recent years, there is a rise in the oral diseases related to oxidative stress. Oxidative stress in oral disease is related to other systemic diseases in the body such as periodontitis, cardiovascular, pancreatic, gastric, and liver diseases. In the present review, we discuss the various pathways that mediate oxidative cellular damage. Numerous pathways mediate oxidative cellular damage and these include caspase pathway, PERK/NRF2 pathway, NADPH oxidase 4 pathways and JNK/mitogen-activated protein (MAP) kinase pathway. We also discuss the role of inflammatory markers, lipid peroxidation, and role of oxygen species linked to oxidative stress. Knowledge of different pathways, role of inflammatory markers, and importance of low-density lipoprotein, fibrinogen, creatinine, nitric oxide, nitrates, and highly sensitive C-reactive proteins may be helpful in understanding the pathogenesis and plan better treatment for oral diseases which involve oxidative stress.
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Affiliation(s)
- Jaya Kumar
- Department of Physiology, Universiti Kebangsaan Malaysia Medical CentreKuala Lumpur, Malaysia
| | - Seong Lin Teoh
- Department of Anatomy, Universiti Kebangsaan Malaysia Medical CentreKuala Lumpur, Malaysia
| | - Srijit Das
- Department of Anatomy, Universiti Kebangsaan Malaysia Medical CentreKuala Lumpur, Malaysia
| | - Pasuk Mahakknaukrauh
- Forensic Osteology Research, Chiang Mai UniversityChiang Mai, Thailand
- Excellence in Osteology Research and Training Center, Chiang Mai UniversityChiang Mai, Thailand
- Department of Anatomy, Faculty of Medicine, Chiang Mai UniversityChiang Mai, Thailand
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8
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Evaluating the utility of markers of thromboxane activity and oxidative stress in cardiovascular risk prediction. Coron Artery Dis 2017; 28:275-277. [DOI: 10.1097/mca.0000000000000478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhang J, Zhao X, Jiang Y, Zhao W, Guo T, Cao Y, Teng J, Hao X, Zhao J, Yang Z. Antioxidant status and gut microbiota change in an aging mouse model as influenced by exopolysaccharide produced by Lactobacillus plantarum YW11 isolated from Tibetan kefir. J Dairy Sci 2017; 100:6025-6041. [PMID: 28551178 DOI: 10.3168/jds.2016-12480] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Accepted: 03/30/2017] [Indexed: 12/21/2022]
Abstract
This study investigated the effect of exopolysaccharide (EPS) produced by Lactobacillus plantarum YW11 on the oxidative status and gut microbiota in an aging mouse model induced with d-galactose. The in vitro assay of the antioxidant activity of the EPS showed concentration-dependent (0.25-3.0 mg/mL) activities. At 3.0 mg/mL, the EPS reached the highest scavenging activities with half maximal inhibitory concentration values against hydroxyl radicals at 75.10% and 1.22 mg/mL, superoxide anion at 62.71% and 1.54 mg/mL, 2, 2-diphenyl-1-picrylhydrazyl at 35.11% and 0.63 mg/mL, and the maximal chelating rate on ferrous ion and the half-maximal chelating concentration of the EPS at 41.09% and 1.07 mg/mL, respectively. High doses of EPS (50 mg/kg per day) effectively relieved the oxidative stress in the aging mice with increased levels of glutathione peroxidase, superoxide dismutase, catalase, and total antioxidant capacity in mice serum by 21.55, 33.14, 61.09, and 38.18%, respectively, and decreased malondialdehyde level from 11.69 to 5.89 mmol/mL compared with those in the untreated aging mice model. The analysis of pyrosequencing sequence data from the gut microbiota revealed that the EPS could recover the microbiota diversity and phylotypes decreased or eliminated by the d-galactose treatment. The EPS could selectively decrease the abundance of Flexispira (37.5 fold), and increase the abundance of Blautia (36.5 fold) and Butyricicoccus (9.5 fold), which correspondingly decreased the content of nitrogen oxides to 9.87% and increased the content of short-chain fatty acids by 2.23 fold, thereby improving the oxidative and health conditions of the host intestinal tract. Further correlation analysis of core-microbiota variation induced by different treatments showed a strong correlation with oxidative phenotypes [catalase, goodness of prediction (Q2) = 0.49; total antioxidant capacity, Q2 = 0.45; nitrogen oxides, Q2 = 0.67; short-chain fatty acids, Q2 = 0.55]. The fermented milk with L. plantarum YW11 containing EPS also showed favorable antioxidant and gut microbiota regulating activities. The present finding provided new insights into the functional mechanism of probiotics bioactivity.
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Affiliation(s)
- Jian Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
| | - Xiao Zhao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
| | - Yunyun Jiang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
| | - Wen Zhao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
| | - Ting Guo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
| | - Yongqiang Cao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
| | - Junwei Teng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
| | - Xiaona Hao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
| | - Juan Zhao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
| | - Zhennai Yang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China.
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Di Simone N, Tersigni C, Cardaropoli S, Franceschi F, Di Nicuolo F, Castellani R, Bugli F, de Waure C, Cavaliere AF, Gasbarrini A, Sanguinetti M, Scambia G, Todros T. Helicobacter pylori infection contributes to placental impairment in preeclampsia: basic and clinical evidences. Helicobacter 2017; 22. [PMID: 27484400 DOI: 10.1111/hel.12347] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Preeclampsia (PE) is a major cause of maternal and neonatal morbidity and mortality. Epidemiological association between Helicobacter pylori (Hp) infection and PE onset has been widely shown. The aim of this study was to analyze a possible correlation between Hp infection and the severity of clinical presentation of PE and to identify an immunologic mechanism triggered by Hp infection potentially contributing to the pathogenesis of PE. MATERIALS AND METHODS Sera from 93 preeclamptic women and 87 healthy pregnant women were tested for Hp infection by immunoassay and for anti-CagA antibodies by Western blot assay. The serologic results were correlated with the clinical features of PE. The functional effect of serum IgG fractions, positive or negative for Hp, from preeclamptic women or controls were tested on trophoblast and endothelial cell cultures and in a murine model of angiogenesis. RESULTS Preeclamptic women showed higher seroprevalence of Hp infection (57.0%) compared to controls (33.3%) (P<.001). The seropositivity for CagA-positive strains of Hp was 45.2% in preeclamptic women vs 13.7% in controls (P<.001). In PE women, Hp infection was associated with abnormality of uterine arteries Doppler (P<.001). Hp+ IgG fractions from preeclamptic women bound to trophoblast and endometrial endothelial cell cultures, reducing in vitro invasiveness and angiogenesis, respectively, and inhibited angiogenesis in mice. CONCLUSIONS Our data show, for the first time, an association between Hp infection and PE with abnormal uterine arteries Doppler velocimetry, suggesting a role for Hp infection in impairing placental development and increasing the risk to develop PE. This study opens the new perspective of a potential screening and treatment for Hp infection in pregnancy.
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Affiliation(s)
- Nicoletta Di Simone
- Department of Obstetrics and Gynecology, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli, Rome, Italy
| | - Chiara Tersigni
- Department of Obstetrics and Gynecology, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli, Rome, Italy
| | - Simona Cardaropoli
- Department of Surgical Sciences, Università degli Studi di Torino, Turin, Italy
| | - Francesco Franceschi
- Emergency Department, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli, Rome, Italy
| | - Fiorella Di Nicuolo
- Department of Obstetrics and Gynecology, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli, Rome, Italy
| | - Roberta Castellani
- Department of Obstetrics and Gynecology, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli, Rome, Italy
| | - Francesca Bugli
- Institute of Microbiology, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli, Rome, Italy
| | - Chiara de Waure
- Institute of Public Health, Università Cattolica Del Sacro Cuore, Rome, Italy
| | - Anna Franca Cavaliere
- Department of Obstetrics and Gynecology, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli, Rome, Italy
| | - Antonio Gasbarrini
- Department of Internal Medicine, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli, Rome, Italy
| | - Maurizio Sanguinetti
- Institute of Microbiology, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli, Rome, Italy
| | - Giovanni Scambia
- Department of Obstetrics and Gynecology, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli, Rome, Italy
| | - Tullia Todros
- Department of Surgical Sciences, Università degli Studi di Torino, Turin, Italy
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11
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Zhang S, Wang J, Chen S, Yin J, Pan Z, Liu K, Li L, Zheng Y, Yuan Y, Jiang Y. Effects of Suilysin on Streptococcus suis-Induced Platelet Aggregation. Front Cell Infect Microbiol 2016; 6:128. [PMID: 27800304 PMCID: PMC5065993 DOI: 10.3389/fcimb.2016.00128] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 09/27/2016] [Indexed: 11/29/2022] Open
Abstract
Blood platelets play important roles during pathological thrombocytopenia in streptococcal toxic shock syndrome (STSS). Streptococcus suis (S. suis) an emerging human pathogen, can cause STSS similarly to S. pyogenes. However, S. suis interactions with platelets are poorly understood. Here, we found that suilysin (SLY), different from other bacterial cholesterol-dependent cytolysins (CDCs), was the sole stimulus that induced platelet aggregation. Furthermore, the inside-out activation of GPIIb/IIIa of platelets mediated SLY-induced platelet aggregation. This process was triggered by Ca2+ influx that depend on the pore forming on platelets by SLY. Additionally, although SLY induced α-granule release occurred via the MLCK-dependent pathway, PLC-β-IP3/DAG-MLCK and Rho-ROCK-MLCK signaling were not involved in SLY-induced platelet aggregation. Interestingly, the pore dependent Ca2+ influx was also found to participate in the induction of platelet aggregation with pneumolysin (PLY) and streptolysin O (SLO), two other CDCs. It is possible that the CDC-mediated platelet aggregation we observed in S. suis is a similar response mechanism to that used by a wide range of bacteria. These findings might lead to the discovery of potential therapeutic targets for S. suis-associated STSS.
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Affiliation(s)
- Shengwei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and EpidemiologyBeijing, China; Department of Clinical Laboratory, Dongfang Hospital, Beijing University of Chinese MedicineBeijing, China
| | | | - Shaolong Chen
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Jiye Yin
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences Beijing, China
| | - Zhiyuan Pan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Keke Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Lin Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Yuling Zheng
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Yuan Yuan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Yongqiang Jiang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
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12
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Elkhouly NI, Elkelani OA, Elhalaby AF, Shabana AA. Relation betweenHelicobacter pyloriinfection and severe pre-eclampsia complicated by intrauterine growth restriction in a rural area in Egypt. J OBSTET GYNAECOL 2016; 36:1046-1049. [DOI: 10.1080/01443615.2016.1196169] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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13
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Abstract
Novel concepts of disease susceptibility and development suggest an important role of gastrointestinal microbiota and microbial pathogens. They can contribute to physiological systems and disease processes, even outside of the gastrointestinal tract. There is increasing evidence that genetics of the host influence and interact with gut microbiota. Moreover, aging-associated oxidative stress may cause morphologic alterations of bacterial cells, thus influencing the aggressive potential and virulence markers of an anaerobic bacterium and finally the type of interaction with the host. At the same time, microbiota may influence host gene expression and it is becoming apparent that it may occur through the regulation of microRNAs. They are short single-stranded noncoding RNAs that regulate posttranscriptional gene expression by affecting mRNA stability and/or translational repression of their target mRNAs. The introduction of -omics approaches (such as metagenomics, metaproteomics, and metatranscriptomics) in microbiota research will certainly advance our knowledge of this area. This will lead to greatly deepen our understanding of the molecular targets in the homeostatic interaction between the gut microbiota and the host and, thereby, promises to reveal new ways to treat diseases and maintain health.
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14
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Tersigni C, Franceschi F, Todros T, Cardaropoli S, Scambia G, Di Simone N. Insights into the Role of Helicobacter pylori Infection in Preeclampsia: From the Bench to the Bedside. Front Immunol 2014; 5:484. [PMID: 25346732 PMCID: PMC4191300 DOI: 10.3389/fimmu.2014.00484] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 09/22/2014] [Indexed: 01/26/2023] Open
Abstract
Preeclampsia (PE) is defined as a hypertensive and coagulative disorder affecting about 2–8% of all pregnancies and is one of the main causes of maternal and fetal morbidity and mortality. Despite the great amount of studies run in this field, little is known about the precise pathogenic mechanisms behind PE. While endothelial and trophoblast dysfunctions, exaggerated inflammatory response, and hypercoagulative state have been shown to play a key role in the occurrence of PE, the primary trigger is still unknown. One of the hypotheses is that some infectious agents may represent a trigger for PE onset. Consistently, higher seroprevalence of Helicobacter pylori (HP) infection, a Gram-negative bacterium with a specific tropism for human gastric mucosa, has been shown in women with PE. Even tighter association has been found between PE and infection with cytotoxin-associated gene-A (CagA)-positive strains of HP. Recent in vitro studies have shown that anti-CagA antibodies cross-react with human trophoblast cells and determine a functional impairment in terms of cell invasiveness, thus, providing the first pathogenic model of HP infection-mediated placental damage. Since in the early process of implantation and placental development, trophoblast invasion of maternal decidua is a crucial step, the proposed autoimmune mechanism induced by HP infection, negatively interfering with the fetal side of the early developing placenta, may represent a mechanism explaining the higher seropositivity for HP infection among PE women. However, the contribution of HP infection to the pathogenesis of PE or to the worsening of its clinical presentation need to be further investigated as well as the possible impact of pre-pregnancy screening and eradication of HP infection on the incidence of the syndrome.
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Affiliation(s)
- Chiara Tersigni
- Department of Obstetrics and Gynecology, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli , Rome , Italy
| | - Francesco Franceschi
- Emergency Department, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli , Rome , Italy
| | - Tullia Todros
- Department of Surgical Sciences, Università degli Studi di Torino, Ospedale S. Anna , Turin , Italy
| | - Simona Cardaropoli
- Department of Surgical Sciences, Università degli Studi di Torino, Ospedale S. Anna , Turin , Italy
| | - Giovanni Scambia
- Department of Obstetrics and Gynecology, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli , Rome , Italy
| | - Nicoletta Di Simone
- Department of Obstetrics and Gynecology, Università Cattolica Del Sacro Cuore, Policlinico A. Gemelli , Rome , Italy
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15
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Korkushko OV, Shatilo VB, Gavalko YV, Grib ON, Bagrii AS, Ostapchenko LI, Strotskaya EA. The relationship between enzyme activity of gastric mucosa with microcirculation and acid output. ADVANCES IN GERONTOLOGY 2013. [DOI: 10.1134/s2079057013020094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Cardaropoli S, Rolfo A, Piazzese A, Ponzetto A, Todros T. Helicobacter pylori's virulence and infection persistence define pre-eclampsia complicated by fetal growth retardation. World J Gastroenterol 2011; 17:5156-65. [PMID: 22215939 PMCID: PMC3243881 DOI: 10.3748/wjg.v17.i47.5156] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Revised: 06/09/2011] [Accepted: 06/16/2011] [Indexed: 02/06/2023] Open
Abstract
AIM: To better understand the pathogenic role of Helicobacter pylori (H. pylori) in pre-eclampsia (PE), and whether it is associated or not with fetal growth retardation (FGR).
METHODS: Maternal blood samples were collected from 62 consecutive pregnant women with a diagnosis of PE and/or FGR, and from 49 women with uneventful pregnancies (controls). Serum samples were evaluated by immunoblot assay for presence of specific antibodies against H. pylori antigens [virulence: cytotoxin-associated antigen A (CagA); ureases; heat shock protein B; flagellin A; persistence: vacuolating cytotoxin A (VacA)]. Maternal complete blood count and liver enzymes levels were assessed at delivery by an automated analyzer.
RESULTS: A significantly higher percentage of H. pylori seropositive women were found among PE cases (85.7%) compared to controls (42.9%, P < 0.001). There were no differences between pregnancies complicated by FGR without maternal hypertension (46.2%) and controls. Importantly, persistent and virulent infections (VacA/CagA seropositive patients, intermediate leukocyte blood count and aspartate aminotransferase levels) were exclusively associated with pre-eclampsia complicated by FGR, while virulent but acute infections (CagA positive/VacA negative patients, highest leukocyte blood count and aspartate aminotransferase levels) specifically correlated with PE without FGR.
CONCLUSION: Our data strongly indicate that persistent and virulent H. pylori infections cause or contribute to PE complicated by FGR, but not to PE without feto-placental compromise.
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17
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Cox D, Kerrigan SW, Watson SP. Platelets and the innate immune system: mechanisms of bacterial-induced platelet activation. J Thromb Haemost 2011; 9:1097-107. [PMID: 21435167 DOI: 10.1111/j.1538-7836.2011.04264.x] [Citation(s) in RCA: 193] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
It has become clear that platelets are not simply cell fragments that plug the leak in a damaged blood vessel; they are, in fact, also key components in the innate immune system, which is supported by the presence of Toll-like receptors (TLRs) on platelets. As the cells that respond first to a site of injury, they are well placed to direct the immune response to deal with any resulting exposure to pathogens. The response is triggered by bacteria binding to platelets, which usually triggers platelet activation and the secretion of antimicrobial peptides. The main platelet receptors that mediate these interactions are glycoprotein (GP)IIb-IIIa, GPIbα, FcγRIIa, complement receptors, and TLRs. This process may involve direct interactions between bacterial proteins and the receptors, or can be mediated by plasma proteins such as fibrinogen, von Willebrand factor, complement, and IgG. Here, we review the variety of interactions between platelets and bacteria, and look at the potential for inhibiting these interactions in diseases such as infective endocarditis and sepsis.
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Affiliation(s)
- D Cox
- Molecular and Cellular Therapeutics School of Pharmacy, Royal College of Surgeons in Ireland, Dublin, Ireland.
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18
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Schwedhelm E, Bierend A, Maas R, Trinks R, Kom GD, Tsikas D, Böger RH. Redox-generated isoprostanes are associated with residual platelet activity in aspirin-treated patients with stable coronary heart disease. J Thromb Haemost 2010; 8:2662-70. [PMID: 20961392 DOI: 10.1111/j.1538-7836.2010.04117.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
AIM Insufficient platelet inhibition by low-dose aspirin is associated with poor prognosis in patients with coronary heart disease (CHD). We sought to investigate the prevalence of this phenomenon in patients with stable CHD and to study whether oxidative stress plays a role in its pathogenesis. METHODS AND RESULTS We studied the platelet response to long-term (≥ 6 months) low-dose (100 mg per day) aspirin in 130 consecutive patients with stable CHD (age 66 ± 8 years, 83% male). Among a wide distribution of platelet responses to collagen, ADP, and arachidonic acid, the vast majority of patients in the highest tertile of residual platelet activity (defined as 'aspirin low-responders') were characterized by lack of platelet inhibition by aspirin in vitro, significantly although not completely suppressed platelet TXB₂ production and COX-1 activity, and significantly higher urinary 8-iso-prostaglandin F(2α) excretion [186 (147-230) vs. 230 (188-318) pg per mg creatinine; median (IQR), P < 0.001; measured by GC-MS]. CONCLUSION A relevant proportion of patients with CHD show insufficient platelet inhibition by low-dose aspirin. Oxidative stress and lipid peroxidation causing isoprostane formation may underlie inadequate platelet inhibition in an aspirin-insensitive manner in patients with cardiovascular disease.
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Affiliation(s)
- E Schwedhelm
- Institute of Experimental and Clinical Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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19
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Tobin NP, Henehan GT, Murphy RP, Atherton JC, Guinan AF, Kerrigan SW, Cox D, Cahill PA, Cummins PM. Helicobacter pylori-induced inhibition of vascular endothelial cell functions: a role for VacA-dependent nitric oxide reduction. Am J Physiol Heart Circ Physiol 2008; 295:H1403-13. [PMID: 18660451 DOI: 10.1152/ajpheart.00240.2008] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Epidemiological and clinical studies provide compelling support for a causal relationship between Helicobacter pylori infection and endothelial dysfunction, leading to vascular diseases. However, clear biochemical evidence for this association is limited. In the present study, we have conducted a comprehensive investigation of endothelial injury in bovine aortic endothelial cells (BAECs) induced by H. pylori-conditioned medium (HPCM) prepared from H. pylori 60190 [vacuolating cytotoxin A (Vac(+))]. BAECs were treated with either unconditioned media, HPCM (0-25% vol/vol), or Escherichia coli-conditioned media for 24 h, and cell functions were monitored. Vac(+) HPCM significantly decreased BAEC proliferation, tube formation, and migration (by up to 44%, 65%, and 28%, respectively). Posttreatment, we also observed sporadic zonnula occludens-1 immunolocalization along the cell-cell border, and increased BAEC permeability to FD40 Dextran, indicating barrier reduction. These effects were blocked by 5-nitro-2-(3-phenylpropylamino)benzoic acid (VacA inhibitor) and were not observed with conditioned media prepared from either VacA-deleted H. pylori or E. coli. The cellular mechanism mediating these events was also considered. Vac(+) HPCM (but not Vac(-)) reduced nitric oxide (NO) by >50%, whereas S-nitroso-N-acetylpenicillamine, an NO donor, recovered all Vac(+) HPCM-dependent effects on cell functions. We further demonstrated that laminar shear stress, an endothelial NO synthase/NO stimulus in vivo, could also recover the Vac(+) HPCM-induced decreases in BAEC functions. This study shows, for the first time, a significant proatherogenic effect of H. pylori-secreted factors on a range of vascular endothelial dysfunction markers. Specifically, the VacA-dependent reduction in endothelial NO is indicated in these events. The atheroprotective impact of laminar shear stress in this context is also evident.
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Affiliation(s)
- Nicholas P Tobin
- School of Biotechnology, Dublin City University, Dublin, Ireland
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20
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Ponzetto A, Cardaropoli S, Piccoli E, Rolfo A, Gennero L, Kanduc D, Todros T. Pre-eclampsia is associated with Helicobacter pylori seropositivity in Italy. J Hypertens 2007; 24:2445-9. [PMID: 17082728 DOI: 10.1097/hjh.0b013e3280109e8c] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVES Pre-eclampsia (PE) is characterized by an excess of inflammation and endothelial dysfunction. Helicobacter pylori (H. pylori) causes chronic inflammatory changes and endothelial damage. We investigated the prevalence of seropositivity for IgG against H. pylori and cytotoxin-associated antigen A (CagA) in PE patients and the presence of H. pylori DNA in their placentas. METHODS We tested 47 pregnant women with PE and 47 with uneventful pregnancies for serum antibodies against H. pylori (enzyme immunoassays) and CagA protein (immunoblot assays). In 20 of them (10 normal and 10 PE) we assessed the presence, in the placenta, of H. pylori DNA by means of nested polymerase chain reaction (PCR). The odds ratios (OR) and 95% confidence intervals (CI), adjusted for parity, were calculated using logistic regression analysis to assess the risk of PE associated with H. pylori infection. RESULTS Helicobacter pylori seropositivity frequency was higher in mothers with PE (51.1%) compared to women with uneventful pregnancy (31.9%) (OR, 2.668; 95% CI, 1.084-6.566; P = 0.033). The difference was even greater for CagA seropositivity (80.9 and 14.9%, respectively) (OR, 26.035; 95% CI, 8.193-82.729; P < 0.001). All placentas were negative for H. pylori DNA. CONCLUSIONS Helicobacter pylori, and especially strains carrying the CagA gene, may contribute to the inflammatory mechanisms involved in the pathogenesis of PE.
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21
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Goodman KJ, Joyce SL, Ismond KP. Extragastric diseases associated with Helicobacter pylori infection. Curr Gastroenterol Rep 2007; 8:458-64. [PMID: 17105683 DOI: 10.1007/s11894-006-0035-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This paper critically reviews the current literature on extragastric diseases associated with Helicobacter pylori infection, with an emphasis on methodologic issues that complicate interpretation of study findings. This review reveals common study limitations and overall uncertainty that H. pylori infection plays a role in extragastric diseases, although such a role has not been clearly ruled out for specific diseases of relevance. Evidence suggests that anti-H. pylori therapy may lead to improvement of a few extragastric diseases, in particular, idiopathic thrombocytopenic purpura, iron deficiency anemia, and chronic idiopathic urticaria, but the data from randomized controlled trials are insufficient to confirm this beneficial effect; if the benefit of anti-H. pylori therapy for specific diseases is real, it is not clear if it results from removing H. pylori-specific injurious effects, eliminating some other infectious pathogen, or reducing the total infectious burden.
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Affiliation(s)
- Karen J Goodman
- Division of Gastroenterology, Zeidler Ledcor Centre, University Campus 130, University of Alberta, Edmonton, AB, Canada, T6G 2X8.
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22
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Abstract
Enhanced coagulation and thrombosis are linked to a variety of cardiovascular and metabolic diseases, as well as to cancer. Many of these diseases are also associated with enhanced levels of reactive oxygen species (ROS). Indeed, ROS have been made responsible for promoting many of these diseases. They have been shown not only to be cytotoxic, but also to serve as signaling molecules in a variety of cells. Recently, evidence accumulated that ROS and the redox state are also important in the control of blood coagulation and thrombosis.
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Affiliation(s)
- Agnes Görlach
- Experimental Pediatric Cardiology, Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Center Munich at the Technical University Munich, Munich, Germany.
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23
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Nilsson HO, Pietroiusti A, Gabrielli M, Zocco MA, Gasbarrini G, Gasbarrini A. Helicobacter pylori and extragastric diseases--other Helicobacters. Helicobacter 2005; 10 Suppl 1:54-65. [PMID: 16178972 DOI: 10.1111/j.1523-5378.2005.00334.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The involvement of Helicobacter pylori in the pathogenesis of extragastric diseases continues to be an interesting topic in the field of Helicobacter-related pathology. Although conflicting findings have been reported for most of the disorders, a role of H. pylori seems to be important especially for the development of cardiovascular and hematologic disorders. Previously isolated human and animal Helicobacter sp. flexispira and "Helicobacter heilmannii" strains have been validated using polyphasic taxonomy. A novel enterohepatic Helicobacter has been isolated from mastomys and mice, adding to the list of helicobacters that colonize the liver. Genetic targets that may aid the classification of novel Helicobacter species have emerged. Animal models of Helicobacter-induced gastric and hepatobiliary diseases have offered insights to the mechanisms associated with premalignant transformation.
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Zeller JA, Lenz A, Eschenfelder CC, Zunker P, Deuschl G. Platelet-Leukocyte Interaction and Platelet Activation in Acute Stroke With and Without Preceding Infection. Arterioscler Thromb Vasc Biol 2005; 25:1519-23. [PMID: 15845906 DOI: 10.1161/01.atv.0000167524.69092.16] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective—
Acute coronary syndromes and ischemic cerebral stroke share similarities regarding elevated platelet activation. In coronary syndromes, the importance of inflammation with platelet-leukocyte interaction has been demonstrated. Recent infection is an established risk factor for ischemic stroke; the role of platelet-leukocyte interaction in these patients had not been investigated.
Methods and Results—
Using a flow cytometric assay we investigated 58 stroke patients, 21 with and 37 without infection 1 week before acute cerebral ischemia, and compared them to 58 controls with regard to platelet-leukocyte aggregation and platelet activation on admission and on day 7. Patients with previous infection were significantly up-regulated with regard to platelet activation and platelet-leukocyte aggregation compared with patients without infection. On day 7, these increases in the postinfective group had drawn level with the lower values of the other patients. As reported previously, recent infection was associated with a more severe postischemic deficit.
Conclusions—
These results suggest an important role of intercellular platelet-leukocyte interaction in the pathophysiology of acute cerebral ischemia which may also contribute to the increased incidence and clinical severity of ischemic stroke following infection. This may lead to therapeutic considerations of blocking intercellular adhesion molecules like P-selectin or the P-selectin glycoprotein ligand.
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Affiliation(s)
- J A Zeller
- Department of Neurology, Christian-Albrechts-University, Kiel, Germany.
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