151
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Performic Acid Controls Better Clostridium tyrobutyricum Related Bacteria than Peracetic Acid. SUSTAINABILITY 2018. [DOI: 10.3390/su10114116] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Clostridia are anaerobic spore-forming bacteria, which degrade carbohydrates to butyric acid, carbon dioxide, hydrogen and other compounds. These bacteria are commonly found in feces of ruminants, from where they can enter to udders and milk via manure or fodder. This study was done to find a sustainable sanitation method to control the resistant clostridial spores as they are difficult to control in the food processing industry. Clostridia spoil cheeses and other dairy products, and thereby increase the carbon footprint of products and cause economical losses in the dairy industry. The efficacy of two organic peroxides; peracetic acid (PAA) and performic acid (PFA) was tested against 30 clostridia strains isolated from cattle slurry, silage, or spoiled cheeses. PAA, at a concentration of 220 mg L−1, only eliminated 6/30 clostridia strains, whereas PFA totally eliminated 26/30 clostridia strains at a concentration of 120 mg L−1. PFA therefore seems to be a more potent disinfectant than the more commonly used PAA. PFA is an effective disinfectant against Clostridium tyrobutyricum and other resistant clostridia at 120 mg L−1 for 5–10 min contact time at room temperature.
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152
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Karali KK, Sygellou L, Stalikas CD. Highly fluorescent N-doped carbon nanodots as an effective multi-probe quenching system for the determination of nitrite, nitrate and ferric ions in food matrices. Talanta 2018; 189:480-488. [DOI: 10.1016/j.talanta.2018.07.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 07/02/2018] [Accepted: 07/05/2018] [Indexed: 10/28/2022]
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153
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Ma L, Hu L, Feng X, Wang S. Nitrate and Nitrite in Health and Disease. Aging Dis 2018; 9:938-945. [PMID: 30271668 PMCID: PMC6147587 DOI: 10.14336/ad.2017.1207] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Accepted: 12/07/2017] [Indexed: 12/23/2022] Open
Abstract
The source of dietary nitrate (NO3) is mainly green, leafy vegetables, partially absorbed into blood through intestinal mucosa. The recycled nitrate is reabsorbed and concentrated by the salivary glands and then secreted into saliva. In 2012, sialin was first discovered as the mammalian membrane nitrate transporter in salivary glands and plays a key role in circulation of inorganic nitrate, providing a scientific basis for further investigation into the circulation and functions of nitrate. Dietary nitrate can be converted to nitrite (NO2) by oral commensal bacteria under the tongue or in the stomach, following which nitrite is converted to nitric oxide (NO) through non-enzymatic synthesis. Previously, nitrate and nitrite were thought to be carcinogenic due to the potential formation of nitrogen compounds, whereas the beneficial functions of NO3--NO2--NO pathway were ignored. Under conditions of hypoxia and ischemia, the production of endogenous NO from L-arginine is inhibited, while the activity of exogenous NO3--NO2--NO is enhanced. Recently, a greater amount of evidence has shown that nitrate and nitrite serve as a reservoir and perform positive biological NO-like functions. Therefore, exogenous dietary nitrate plays an important role in various physiological activities as an effective supplement of nitrite and NO in human body. Here we generally review the source, circulation and bio-functions of dietary nitrate.
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Affiliation(s)
- Linsha Ma
- Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University, Beijing 100069, China
| | - Liang Hu
- Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University, Beijing 100069, China
| | - Xiaoyu Feng
- Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University, Beijing 100069, China
| | - Songlin Wang
- Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University, Beijing 100069, China
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154
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Gillman PK. A reassessment of the safety profile of monoamine oxidase inhibitors: elucidating tired old tyramine myths. J Neural Transm (Vienna) 2018; 125:1707-1717. [PMID: 30255284 DOI: 10.1007/s00702-018-1932-y] [Citation(s) in RCA: 191] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 09/17/2018] [Indexed: 01/24/2023]
Abstract
This review appraises over 150 recent original papers reporting data that demonstrate the greatly reduced tyramine content of modern-day 'foods', about which the medical literature has a paucity of information. It discusses the cardiovascular pharmacology of tyramine and the characteristics, extent, risks, and treatment of the blood pressure increases that sometimes result from tyramine ingestion (the pressor response). In past decades, cheese was the only food associated with documented fatalities resulting from hypertension. Today, few foods contain problematically high tyramine levels, which is a result of changes in international food production techniques (especially the use of starter cultures), and hygiene regulations. Nowadays, even 'matured' cheeses are usually safe in healthy-sized portions. The mechanism by which tyramine may be produced in foods (by certain micro-organisms) is explained and hundreds of recent estimations of cheeses are reviewed. Numerous other previously inadequately documented foods are reviewed, including fish and soy sauces, salami-type sausages, dried meats, beers, wines, and various condiments. Evidence that the risk of harm from the pressor response has previously been overstated is reviewed, and the iatrogenic harms from hasty and aggressive treatment of hypertensive urgency are re-evaluated. Evidence now suggests that MAOIs are of comparable safety to many newer drugs and are straightforward to use. Previously held concerns about MAOIs are misplaced and some are of over-estimated consequence. The variability of pressor sensitivity to tyramine between individuals means that the knowledge and judgement of doctors, and some care, are still required.
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155
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Yan S, Gan Y, Song X, Chen Y, Liao N, Chen S, Lv C. Association between refrigerator use and the risk of gastric cancer: A systematic review and meta-analysis of observational studies. PLoS One 2018; 13:e0203120. [PMID: 30161245 PMCID: PMC6117033 DOI: 10.1371/journal.pone.0203120] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 08/11/2018] [Indexed: 01/07/2023] Open
Abstract
There were many observational studies that examined the association between refrigerator use and stomach cancer. However, the results remain to be a contradiction. This study aimed to evaluate the association between refrigerator use and the risk of gastric cancer. We systematically searched the PubMed, Embase, Web of Science databases (up to 31 May 2017), and manually reviewed the references lists of retrieved articles, to identify studies that evaluated the association between refrigerator use and the risk of gastric cancer. Observational studies reporting odds ratio (OR) with 95% confidence intervals (CIs) for the relationship between refrigerator use and the risk of gastric cancer were included. Two authors independently reviewed and selected eligible studies and conducted the study quality evaluation. We included a total of twelve studies enrolling 14,361 individuals. The summarized OR the association between refrigerator use and the risk of gastric cancer was 0.70 (95% CI, 0.56-0.88; P<0.001). Subgroup analysis showed that a significantly inverse association between refrigerator use and gastric cancer risk was observed in in some Asian countries (OR = 0.68, 95% CI, 0.50-0.93; P = 0.002), but not in some Western countries, such as Germany, etc. Refrigerator use is significantly associated with a decreased risk of gastric cancer. Further studies are warranted to confirm whether refrigerator use could reduce the risk of gastric cancer among some Asian countries.
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Affiliation(s)
- Shijiao Yan
- School of International Education, Hainan Medical University, Haikou, Hainan, P. R. China
| | - Yong Gan
- Department of Social Medicine and Health Management, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
| | - Xingyue Song
- Department of Social Medicine and Health Management, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
| | - Yunqiang Chen
- Emergency and Trauma College, Hainan Medical University, Haikou, Hainan, P. R. China
| | - Na Liao
- Department of Nursing, the Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan, P. R. China
| | - Song Chen
- Department of Emergency, the First Affiliated Hospital of Hainan Medical University, Haikou, Hainan, P. R. China
| | - Chuanzhu Lv
- Emergency and Trauma College, Hainan Medical University, Haikou, Hainan, P. R. China
- * E-mail:
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156
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Mills S, Ross RP, Hill C. Bacteriocins and bacteriophage; a narrow-minded approach to food and gut microbiology. FEMS Microbiol Rev 2018; 41:S129-S153. [PMID: 28830091 DOI: 10.1093/femsre/fux022] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 04/20/2017] [Indexed: 12/11/2022] Open
Abstract
Bacteriocins and bacteriophage (phage) are biological tools which exhibit targeted microbial killing, a phenomenon which until recently was seen as a major drawback for their use as antimicrobial agents. However, in an age when the deleterious consequences of broad-spectrum antibiotics on human health have become apparent, there is an urgent need to develop narrow-spectrum substitutes. Indeed, disruption of the microbial communities which exist on and in our bodies can generate immediate and long-term negative effects and this is particularly borne out in the gut microbiota community whose disruption has been linked to a number of disorders reaching as far as the brain. Moreover, the antibiotic resistance crisis has resulted in our inability to treat many bacterial infections and has triggered the search for damage-limiting alternatives. As bacteriocins and phage are natural entities they are relatively easy to isolate and characterise and are also ideal candidates for improving food safety and quality, forfeiting the need for largely unpopular chemical preservatives. This review highlights the efficacy of both antimicrobial agents in terms of gut health and food safety and explores the body of scientific evidence supporting their effectiveness in both environments.
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Affiliation(s)
- Susan Mills
- APC Microbiome Institute and School of Microbiology, University College Cork, Western Road, Cork T12 YN60, Ireland
| | - R Paul Ross
- APC Microbiome Institute and School of Microbiology, University College Cork, Western Road, Cork T12 YN60, Ireland
| | - Colin Hill
- APC Microbiome Institute and School of Microbiology, University College Cork, Western Road, Cork T12 YN60, Ireland
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157
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You J, Sun Y, Bo Y, Zhu Y, Duan D, Cui H, Lu Q. The association between dietary isoflavones intake and gastric cancer risk: a meta-analysis of epidemiological studies. BMC Public Health 2018; 18:510. [PMID: 29665798 PMCID: PMC5905165 DOI: 10.1186/s12889-018-5424-7] [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: 10/19/2017] [Accepted: 04/10/2018] [Indexed: 12/17/2022] Open
Abstract
Background Isoflavones, a class of phytoestrogenic compounds, are abundant in soybeans. A number of epidemiological studies have investigated the association between dietary isoflavones intake and the risk of gastric cancer. However, the results are inconclusive. Therefore, the meta-analysis was conducted to evaluate the effect of dietary isoflavones intake on the risk of gastric cancer. Methods Relevant studies from May 1992 to May 2017 were identified through searching PubMed and Web of Science. Additional articles were identified from the reference lists of relevant review articles. Pooled risk ratios (RRs) or odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using a fixed-effects model. Funnel plot and Egger’s test were used to evaluate publication bias. Results Seven articles reporting 12 studies were included in the current meta-analysis. We found no significant association between dietary isoflavones intake and gastric cancer risk with the highest versus the lowest categories of dietary isoflavones intake (OR = 0.97, 95% CI = 0.87–1.09, I2 = 27.5%). Subgroup analyses generally yield similar results. Conclusions Higher dietary isoflavones intake is not associated with a decline in the risk of gastric cancer. Electronic supplementary material The online version of this article (10.1186/s12889-018-5424-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jie You
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Yafei Sun
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Yacong Bo
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Yiwei Zhu
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Dandan Duan
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Han Cui
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Quanjun Lu
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China.
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158
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Cai E, Han J, Yang L, Zhang W, Zhao Y, Chen Q, Guo M, He X. Novel Method of Preparation and Activity Research on Arctigenin from Fructus Arctii. Pharmacogn Mag 2018; 14:87-94. [PMID: 29576707 PMCID: PMC5858248 DOI: 10.4103/pm.pm_514_16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 01/04/2017] [Indexed: 11/28/2022] Open
Abstract
Background: Arctigenin has many pharmacological activities with clinical significance and is derived from Arctium lappa L. However, the present extraction method is inefficient and does not have meaningful industrial production. Objective: A new method to directly prepare arctigenin was established by combining enzyme-assisted extraction and central composite design. Arctigenin's further pharmacological activity was also surveyed in vitro. Materials and Methods: β-D-Glucosidase, a food-grade enzyme, was added directly to the fruits of A. lappa L. to hydrolyze the arctiin to arctigenin, and the obtained samples were subsequently subjected to ethanol (30%, v/v) extraction. The pharmacological activity of the extraction and arctigenin was determined by inhibiting acetylcholinesterase (AChE) and scavenging nitrite. Results: The factors investigated include the enzyme concentration (0.5%–2.5%), ultrasound time (10 min−3 0 min), and extraction temperature (30°C–50°C). From the analysis of the results by Design-Expert (V8.0.6), the optimal extraction conditions were obtained: enzyme concentration (1.4%), ultrasound time (25 min), and extraction temperature (45°C). The highest yield of arctigenin, obtained under the optimal conditions was 6.39%, representing an increase of 28.15% compared to the reference extraction without enzyme processing. The IC50 values of the extraction and arctigenin, respectively, for inhibiting AChE were 0.572 mg/ml and 0.462 mg/ml, and those for nitrite-scavenging were 34.571 mg/ml and 17.49 mg/ml. Conclusions: The results demonstrate that using an enzyme directly in the production is an effective means for extracting arctigenin from Fructus arctii. The extraction has the activities of inhibiting AChE and scavenging nitrite, probably because there has arctigenin in it. It is implied that the extraction and arctigenin could contribute to human health in clinical applications. SUMMARY The new method of adding enzyme directly to the preparation of arctigenin was carried out instead of preparing arctigenin by two-step method Three factors affecting the efficiency of preparation were analyzed and discussed include the enzyme concentration, ultrasound time, and extraction temperature by central composite design This new method of preparing arctigenin improved the yield significantly than other methods Arctigenin has remarkable pharmacological activities of inhibiting acetylcholinesterase and scavenging nitrite.
Abbreviations used: AChE: Acetylcholinesterase, CCD: Central composite design, TCM: Traditional Chinese medicines, AD:
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Affiliation(s)
- Enbo Cai
- Department of Traditional Chinese Medicine, College of Chinese Medicinal Material, Jilin Agricultural University, Changchun, Jilin Province 130118, China
| | - Jiahong Han
- Department of Traditional Chinese Medicine, College of Chinese Medicinal Material, Jilin Agricultural University, Changchun, Jilin Province 130118, China
| | - Limin Yang
- Department of Traditional Chinese Medicine, College of Chinese Medicinal Material, Jilin Agricultural University, Changchun, Jilin Province 130118, China
| | - Weiyuan Zhang
- Department of Traditional Chinese Medicine, College of Chinese Medicinal Material, Jilin Agricultural University, Changchun, Jilin Province 130118, China
| | - Yan Zhao
- Department of Traditional Chinese Medicine, College of Chinese Medicinal Material, Jilin Agricultural University, Changchun, Jilin Province 130118, China
| | - Qiulian Chen
- Department of Traditional Chinese Medicine, College of Chinese Medicinal Material, Jilin Agricultural University, Changchun, Jilin Province 130118, China
| | - Meng Guo
- Department of Traditional Chinese Medicine, College of Chinese Medicinal Material, Jilin Agricultural University, Changchun, Jilin Province 130118, China
| | - Xinhong He
- Department of Traditional Chinese Medicine, College of Chinese Medicinal Material, Jilin Agricultural University, Changchun, Jilin Province 130118, China
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159
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Zhang P, Lee J, Kang G, Li Y, Yang D, Pang B, Zhang Y. Disparity of nitrate and nitrite in vivo in cancer villages as compared to other areas in Huai River Basin, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 612:966-974. [PMID: 28886549 DOI: 10.1016/j.scitotenv.2017.08.245] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 08/06/2017] [Accepted: 08/23/2017] [Indexed: 06/07/2023]
Abstract
Saliva and Urine samples were collected for the study on how nitrate and nitrite concentration in human body may be related to the corresponding health risk in a high cancer incidence area. The study area includes three known cancer villages in Huai River basin, China. The results of analyzing collected sample show that there are higher levels of nitrate and nitrite concentration in human saliva and urine sample collected in the study area as compared to those collected in other areas. In addition, levels of nitrate and nitrite concentration in saliva and urine sample change significantly with the ages of sampled population. NO3-concentrations in saliva and urine sample are the most outstanding among the middle-aged and elderly populations. It means that the middle-aged and elderly populations have relatively high vivo nitrate reductive transformation rates and they also have higher N-nitroso compounds synthesis risks in the studied cancer villages.
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Affiliation(s)
- Pengyan Zhang
- College of Environment and Planning, Henan University, Kaifeng, Henan 475004, China; Department of Geography, Kent State University, Kent, OH 44242-0001, USA
| | - Jay Lee
- College of Environment and Planning, Henan University, Kaifeng, Henan 475004, China; Department of Geography, Kent State University, Kent, OH 44242-0001, USA.
| | - Guohua Kang
- College of Environment and Planning, Henan University, Kaifeng, Henan 475004, China
| | - Yanyan Li
- College of Environment and Planning, Henan University, Kaifeng, Henan 475004, China
| | - Dan Yang
- College of Environment and Planning, Henan University, Kaifeng, Henan 475004, China
| | - Bo Pang
- College of Environment and Planning, Henan University, Kaifeng, Henan 475004, China
| | - Yu Zhang
- College of Environment and Planning, Henan University, Kaifeng, Henan 475004, China
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160
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El-Nahhal Y. Nitrate Residues in Fruits, Vegetables and Bread Samples and Their Health Consequences. Health (London) 2018. [DOI: 10.4236/health.2018.104039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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161
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Mali S, Chavan PP, Navale YH, Patil VB, Sathe BR. Ultrasensitive and bifunctional ZnO nanoplates for an oxidative electrochemical and chemical sensor of NO2: implications towards environmental monitoring of the nitrite reaction. RSC Adv 2018; 8:11177-11185. [PMID: 35541530 PMCID: PMC9079129 DOI: 10.1039/c8ra01358f] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 03/12/2018] [Indexed: 11/21/2022] Open
Abstract
Herein, we focused on the one pot synthesis of ZnO nanoplates (NP edge thickness of ∼100 nm) using a chemical emulsion approach for chemical (direct) and electrochemical (indirect) determination of NO2.
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Affiliation(s)
- Shivsharan M. Mali
- Department of Chemistry
- Dr Babasaheb Ambedkar Marathwada University
- Aurangabad
- India
| | - Parag P. Chavan
- Department of Chemistry
- Dr Babasaheb Ambedkar Marathwada University
- Aurangabad
- India
| | - Yuvraj H. Navale
- Functional Materials Research Laboratory
- School of Physical Sciences
- Solapur University
- Solapur
- India
| | - Vikas B. Patil
- Functional Materials Research Laboratory
- School of Physical Sciences
- Solapur University
- Solapur
- India
| | - Bhaskar R. Sathe
- Department of Chemistry
- Dr Babasaheb Ambedkar Marathwada University
- Aurangabad
- India
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162
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Dore MP, Cipolli A, Ruggiu MW, Manca A, Bassotti G, Pes GM. Helicobacter pylori eradication may influence timing of endoscopic surveillance for gastric cancer in patients with gastric precancerous lesions: A retrospective study. Medicine (Baltimore) 2018; 97:e9734. [PMID: 29369216 PMCID: PMC5794400 DOI: 10.1097/md.0000000000009734] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Chronic atrophic gastritis and intestinal metaplasia related to Helicobacter pylori infection, are major risk factors for gastric adenocarcinoma. Eradication of H pylori and endoscopy surveillance of precancerous lesions may reduce the risk and/or lead to early detection of gastric cancer improving survival. In this study, the progression of precancerous lesions after H pylori treatment was evaluated.Patients with incomplete or complete intestinal metaplasia and/or gastric atrophy at the index endoscopy, were examined for the extension/histological worsening of precancerous lesions at the endoscopy surveillance for gastric cancer. Progression of lesions was evaluated according to H pylori status, age, and sex. Cox proportional hazard regression model and Kaplan-Meier curves were used to evaluate the strength of predictors for lesions progression.Among 105 patients (61 women) H pylori negative patients showed a milder worsening of gastric lesions between index and surveillance endoscopy compared with patients positive for the infection (log-rank test: P < .0001, P = .012, and P = .032 for antrum, angulus, and corpus, respectively). The Cox regression model showed persistence of H pylori infection (hazard ratio = 4.436; P < .0001) as the only relevant factor for lesion progression, whereas age >65 years and sex were not significant predictors.According to literature our results demonstrate that H pylori eradication is the major factor able to delay gastric precancerous lesions progression. Time interval for endoscopic surveillance in patients negative for H pylori infection and with gastric precancerous lesions may be extended.
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Affiliation(s)
- Maria Pina Dore
- Dipartimento di Medicina Clinica e Sperimentale
- Baylor College of Medicine, Houston, Texas
| | | | - Matteo Walter Ruggiu
- Dipartimento di Scienze Chirurgiche e Microchirurgiche, University of Sassari, Sassari
| | - Alessandra Manca
- Dipartimento di Scienze Chirurgiche e Microchirurgiche, University of Sassari, Sassari
| | - Gabrio Bassotti
- Dipartimento di Medicina Clinica e Sperimentale, University of Perugia, Perugia, Italy
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163
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Zhao H, Xue Y, Long L, Hu X. Adsorption of nitrate onto biochar derived from agricultural residuals. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 77:548-554. [PMID: 29377839 DOI: 10.2166/wst.2017.568] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
To develop low-cost adsorbents for aqueous nitrate, biochars were prepared from three types of agricultural residuals at different pyrolysis temperatures (300 °C, 450 °C, and 600 °C). The corncob biochar produced at 600 °C (CC600) was the best nitrate adsorbent of all the tested biochars. Characterization results showed that CC600 had good thermal stability, porous structure, and abundant surface functional groups. Findings from batch adsorption experiments demonstrated that CC600 showed relatively fast adsorption kinetics to nitrate in aqueous solutions. In addition, the Langmuir adsorption capacity of CC600 to nitrate was 14.46 mg/g, comparable to that of other biochar-based adsorbents. Therefore, CC600 showed promising potential to be used as a low-cost adsorbent for the treatment of nitrate in water.
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Affiliation(s)
- Haihua Zhao
- School of Civil Engineering, Hubei Engineering University, Xiaogan, Hubei, China
| | - Yingwen Xue
- School of Civil Engineering, Wuhan University, Wuhan, China E-mail:
| | - Li Long
- School of Civil Engineering, Wuhan University, Wuhan, China E-mail:
| | - Xiaolan Hu
- School of Civil Engineering, Wuhan University, Wuhan, China E-mail:
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164
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Gao J, Wang GJ, Wang Z, Gao N, Li J, Zhang YF, Zhou J, Zhang HX, Wen Q, Jin H, Qiao HL. High CYP2E1 activity correlates with hepatofibrogenesis induced by nitrosamines. Oncotarget 2017; 8:112199-112210. [PMID: 29348818 PMCID: PMC5762503 DOI: 10.18632/oncotarget.22937] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 11/14/2017] [Indexed: 01/11/2023] Open
Abstract
Hepatofibrosis, which leads to cirrhosis and eventual hepatocellular carcinoma, is a common response to chronic toxin-mediated liver injury. Nitrosamines are potent hepatotoxic agents that cause necrosis and subsequent fibrosis in the liver as a result of cytochrome P450 2E1 (CYP2E1)-dependent metabolism, which generates toxic metabolites that form adducts with nucleic acids, leading to hepatotoxicity and mutagenesis. Herein, CYP2E1 activity and content were determined in fibrotic liver tissue from patients with hepatocellular carcinoma. The relationship between CYP2E1 innate activity and hepatofibrogenesis was evaluated, the effect of inhibition of CYP2E1 activity on hepatofibrosis was determined in a Sprague-Dawley rat model of diethylnitrosamine-induced hepatofibrosis. The results demonstrated that the CYP2E1 activities in human fibrotic tissues are significantly higher than that in normal liver tissues. In rats treated with diethylnitrosamine, the livers demonstrated various degree of fibrotic changes and collagen deposition in individual rats. The Ishak score, which determines the stage of fibrosis, correlated with CYP2E1 innate activity, with greater fibrosis in rat livers with higher CYP2E1 innate activity. Inhibition of CYP2E1 during diethylnitrosamine treatment decreased hepatofibrosis and there was an inverse correlation between the degree of inhibition and the extent of hepatofibrosis. Therefore, high CYP2E1 activity is a risk factor for hepatofibrogenesis induced by nitrosamines.
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Affiliation(s)
- Jie Gao
- Institute of Clinical Pharmacology, Zhengzhou University, Zhengzhou, Henan, China
| | - Gao-Ju Wang
- Institute of Clinical Pharmacology, Zhengzhou University, Zhengzhou, Henan, China
| | - Zhao Wang
- Institute of Clinical Pharmacology, Zhengzhou University, Zhengzhou, Henan, China
| | - Na Gao
- Institute of Clinical Pharmacology, Zhengzhou University, Zhengzhou, Henan, China
| | - Jing Li
- Institute of Clinical Pharmacology, Zhengzhou University, Zhengzhou, Henan, China
| | - Yun-Fei Zhang
- Institute of Clinical Pharmacology, Zhengzhou University, Zhengzhou, Henan, China.,Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jun Zhou
- Institute of Clinical Pharmacology, Zhengzhou University, Zhengzhou, Henan, China.,Affiliated Provincial People's Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Hong-Xin Zhang
- Institute of Clinical Pharmacology, Zhengzhou University, Zhengzhou, Henan, China
| | - Qiang Wen
- Institute of Clinical Pharmacology, Zhengzhou University, Zhengzhou, Henan, China
| | - Han Jin
- Institute of Clinical Pharmacology, Zhengzhou University, Zhengzhou, Henan, China
| | - Hai-Ling Qiao
- Institute of Clinical Pharmacology, Zhengzhou University, Zhengzhou, Henan, China
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Jin L, Wang Y, Liu F, Yu S, Gao Y, Zhang J. The determination of nitrite by a graphene quantum dot fluorescence quenching method without sample pretreatment. LUMINESCENCE 2017; 33:289-296. [DOI: 10.1002/bio.3412] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 08/25/2017] [Accepted: 08/28/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Li Jin
- School of Chemical and Pharmaceutical Engineering; Jilin Institute of Chemical Technology; Jilin People's Republic of China
| | - Ying Wang
- School of Chemical and Pharmaceutical Engineering; Jilin Institute of Chemical Technology; Jilin People's Republic of China
| | - Fangtong Liu
- School of Chemical and Pharmaceutical Engineering; Jilin Institute of Chemical Technology; Jilin People's Republic of China
| | - Shihua Yu
- School of Chemical and Pharmaceutical Engineering; Jilin Institute of Chemical Technology; Jilin People's Republic of China
| | - Yan Gao
- Center of Analysis and Measurement; Jilin Institute of Chemical Technology; Jilin People's Republic of China
| | - Jianpo Zhang
- School of Chemical and Pharmaceutical Engineering; Jilin Institute of Chemical Technology; Jilin People's Republic of China
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166
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Genetic variants in PPP2CA are associated with gastric cancer risk in a Chinese population. Sci Rep 2017; 7:11499. [PMID: 28904398 PMCID: PMC5597632 DOI: 10.1038/s41598-017-12040-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 09/01/2017] [Indexed: 02/06/2023] Open
Abstract
Protein phosphatase 2A (PP2A), a tumor suppressor protein, has been implicated in cell cycle and apoptosis. Additionally, studies have illustrated its crucial roles in transformation of normal human cells to tumorigenic status. PPP2CA, which encodes the alpha isoform of the catalytic subunit of PP2A, has been recently reported to be associated with several types of cancers. Therefore, we hypothesized that genetic variants in PPP2CA might influence susceptibility of gastric cancer. To test this hypothesis, three tagging single nucleotide polymorphisms (SNPs) in PPP2CA were genotyped in a case-control study including 1,113 cases and 1,848 controls in a Chinese population. Three tagging SNPs in PPP2CA were genotyped using Illumina Human Exome BeadChip. We observed that the A allele of rs13187105 was associated with an increased risk of gastric cancer (adjusted odds ratio (OR) = 1.14, 95% confidence interval (CI): 1.02-1.28, P = 0.017). Further analyses showed that rs13187105 [A] was associated with decreased expression of PPP2CA mRNA (P = 5.1 × 10-6), and PPP2CA mRNA was significantly lower in gastric tumor tissues when comparing that in their adjacent normal tissues (P = 0.037). These findings support our hypothesis that genetic variants in PPP2CA may be implicated in gastric cancer susceptibility in Chinese population.
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167
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Nowak K, Ratajczak-Wrona W, Garley M, Jabłońska E. The effect of ethanol and N-nitrosodimethylamine on the iNOS-dependent NO production in human neutrophils. Role of NF-κB. Xenobiotica 2017; 48:498-505. [DOI: 10.1080/00498254.2017.1342150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Karolina Nowak
- Department of Immunology, Medical University of Bialystok, Bialystok, Poland
| | | | - Marzena Garley
- Department of Immunology, Medical University of Bialystok, Bialystok, Poland
| | - Ewa Jabłońska
- Department of Immunology, Medical University of Bialystok, Bialystok, Poland
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Abstract
Gastric cancers, with gastric adenocarcinoma (GAC) as the most common histological type, impose a considerable global health burden. Although the screening strategies for early detection have been shown to be successful in Japan and South Korea, they are either not implemented or not feasible in most of the world, leading to late diagnosis in most patients. Helicobacter pylori infection contributes to the development of many endemic GACs, and pre-emptive eradication or early treatment of this bacterial infection might provide effective primary prevention. GACs are phenotypically and genotypically heterogeneous. Localized (clinical stage I) GAC is best treated either endoscopically or with limited surgical resection, but clinical stage II or stage III tumours require multidisciplinary adjunctive approaches in addition to surgery. Although GAC is highly treatable in its early stages, advanced (clinical stage IV) GAC has a median survival of just ∼9-10 months. However, detailed molecular and immune profiling of GAC is yielding promise; early studies with immune checkpoint inhibitors suggest that GAC is amenable to immune modulation. Molecular studies have yielded a vast quantity of new information for potential exploitation. Nevertheless, advances against GACs have lagged compared with other tumours of similar incidence, and more research is necessary to overcome the obstacles to prolong survival.
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Affiliation(s)
- Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, Texas 77030, USA
| | - Jeeyun Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Takeshi Sano
- Department of Gastroenterological Surgery, Cancer Institute Hospital, Tokyo, Japan
| | - Yelena Y Janjigian
- Department of Solid Tumor Gastrointestinal Service (Medical Oncology), Memorial Sloan-Kettering Cancer Center, New York, New York, USA
| | - Daiming Fan
- State Key Laboratory of Cancer Biology, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Shumei Song
- Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, Texas 77030, USA
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Abstract
Dietary nitrate is mainly obtained from vegetables, especially green leafy vegetables and beetroot. As a result of early research, dietary nitrate is currently viewed as a contaminant linked to increased risks of stomach cancer and methaemoglobinaemia. Consequently, nitrate levels are restricted in certain vegetables and in water supplies to ensure exposure levels remain below an acceptable daily intake of 3·7 mg/kg per d. The average nitrate intake in the UK is approximately 70 mg/d, although some population groups, such as vegetarians, may consume three times that amount. However, recent studies in the last decade suggest that dietary nitrate can significantly reduce systolic blood pressure via the nitrate-nitrite-NO pathway. A small, downward shift in systolic blood pressure across the population could significantly reduce the incidence of hypertension and mortality from CVD such as stroke. Interestingly, vegetarians tend to have lower levels of blood pressure than omnivores and epidemiological studies suggest that vegetarians have lower risks of CVD. Recent evidence is mainly focused on the acute effects of dietary nitrate supplementation and there is a lack of data looking at the chronic effects of high nitrate consumption in humans. Nevertheless, due to potential health benefits, some authors are recommending that nitrate should be considered as a nutrient necessary for health, rather than as a contaminant which needs to be restricted. This review will discuss the emerging role of dietary nitrate in the control of blood pressure and whether there is sufficient evidence to state that nitrate is a 'new' nutrient.
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170
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Yamashita H, Matsuhara H, Miotani S, Sako Y, Matsui T, Tanaka H, Inagaki N. Artificial sweeteners and mixture of food additives cause to break oral tolerance and induce food allergy in murine oral tolerance model for food allergy. Clin Exp Allergy 2017; 47:1204-1213. [DOI: 10.1111/cea.12928] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 03/13/2017] [Accepted: 03/16/2017] [Indexed: 12/15/2022]
Affiliation(s)
- H. Yamashita
- Laboratory of Pharmacology; Department of Bioactive Molecules; Gifu Pharmaceutical University; Gifu Japan
| | - H. Matsuhara
- Laboratory of Pharmacology; Department of Bioactive Molecules; Gifu Pharmaceutical University; Gifu Japan
| | - S. Miotani
- Laboratory of Pharmacology; Department of Bioactive Molecules; Gifu Pharmaceutical University; Gifu Japan
| | - Y. Sako
- Laboratory of Pharmacology; Department of Bioactive Molecules; Gifu Pharmaceutical University; Gifu Japan
| | - T. Matsui
- Laboratory of Pharmacology; Department of Bioactive Molecules; Gifu Pharmaceutical University; Gifu Japan
- Department of Pediatrics; Graduate School of Medicine; Nagoya University; Nagoya Japan
| | - H. Tanaka
- Laboratory of Pharmacology; Department of Bioactive Molecules; Gifu Pharmaceutical University; Gifu Japan
| | - N. Inagaki
- Laboratory of Pharmacology; Department of Bioactive Molecules; Gifu Pharmaceutical University; Gifu Japan
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Koch CD, Gladwin MT, Freeman BA, Lundberg JO, Weitzberg E, Morris A. Enterosalivary nitrate metabolism and the microbiome: Intersection of microbial metabolism, nitric oxide and diet in cardiac and pulmonary vascular health. Free Radic Biol Med 2017; 105:48-67. [PMID: 27989792 PMCID: PMC5401802 DOI: 10.1016/j.freeradbiomed.2016.12.015] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/18/2016] [Accepted: 12/12/2016] [Indexed: 02/07/2023]
Abstract
Recent insights into the bioactivation and signaling actions of inorganic, dietary nitrate and nitrite now suggest a critical role for the microbiome in the development of cardiac and pulmonary vascular diseases. Once thought to be the inert, end-products of endothelial-derived nitric oxide (NO) heme-oxidation, nitrate and nitrite are now considered major sources of exogenous NO that exhibit enhanced vasoactive signaling activity under conditions of hypoxia and stress. The bioavailability of nitrate and nitrite depend on the enzymatic reduction of nitrate to nitrite by a unique set of bacterial nitrate reductase enzymes possessed by specific bacterial populations in the mammalian mouth and gut. The pathogenesis of pulmonary hypertension (PH), obesity, hypertension and CVD are linked to defects in NO signaling, suggesting a role for commensal oral bacteria to shape the development of PH through the formation of nitrite, NO and other bioactive nitrogen oxides. Oral supplementation with inorganic nitrate or nitrate-containing foods exert pleiotropic, beneficial vascular effects in the setting of inflammation, endothelial dysfunction, ischemia-reperfusion injury and in pre-clinical models of PH, while traditional high-nitrate dietary patterns are associated with beneficial outcomes in hypertension, obesity and CVD. These observations highlight the potential of the microbiome in the development of novel nitrate- and nitrite-based therapeutics for PH, CVD and their risk factors.
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Affiliation(s)
- Carl D Koch
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15261, USA.
| | - Mark T Gladwin
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15261, USA; Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh PA 15261, USA
| | - Bruce A Freeman
- Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh PA 15261, USA; Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Jon O Lundberg
- Department of Physiology and Pharmacology, Karolinska Institutet, S-17177 Stockholm, Sweden
| | - Eddie Weitzberg
- Department of Physiology and Pharmacology, Karolinska Institutet, S-17177 Stockholm, Sweden
| | - Alison Morris
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15261, USA; Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh PA 15261, USA; Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; Department of Physiology and Pharmacology, Karolinska Institutet, S-17177 Stockholm, Sweden
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173
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Health Benefits of Dietary Whole Grains: An Umbrella Review of Meta-analyses. J Chiropr Med 2016; 16:10-18. [PMID: 28228693 DOI: 10.1016/j.jcm.2016.08.008] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 08/11/2016] [Accepted: 08/11/2016] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVE The purpose of this study is to review the effectiveness of the role of whole grain as a therapeutic agent in type 2 diabetes, cardiovascular disease, cancer, and obesity. METHODS An umbrella review of all published meta-analyses was performed. A PubMed search from January 1, 1980, to May 31, 2016, was conducted using the following search strategy: (whole grain OR whole grains) AND (meta-analysis OR systematic review). Only English language publications that provided quantitative statistical analysis on type 2 diabetes, cardiovascular disease, cancer, and weight loss were retrieved. RESULTS Twenty-one meta-analyses were retrieved for inclusion in this umbrella review, and all the meta-analyses reported statistically significant positive benefits for reducing the incidence of type 2 diabetes (relative risk [RR] = 0.68-0.80), cardiovascular disease (RR = 0.63-0.79), and colorectal, pancreatic, and gastric cancers (RR = 0.57-0.94) and a modest effect on body weight, waist circumference, and body fat mass. Significant reductions in cardiovascular and cancer mortality were also observed (RR = 0.82 and 0.89, respectively). Some problems of heterogeneity, publication bias, and quality assessment were found among the studies. CONCLUSION This review suggests that there is some evidence for dietary whole grain intake to be beneficial in the prevention of type 2 diabetes, cardiovascular disease, and colorectal, pancreatic, and gastric cancers. The potential benefits of these findings suggest that the consumption of 2 to 3 servings per day (~45 g) of whole grains may be a justifiable public health goal.
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Adam AHB, Mustafa NEM, Rietjens IMCM. Nitrite in processed meat products in Khartoum, Sudan and dietary intake. FOOD ADDITIVES & CONTAMINANTS PART B-SURVEILLANCE 2016; 10:79-84. [DOI: 10.1080/19393210.2016.1256352] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Aziza Hussein Bakheit Adam
- Department of Food Hygiene and Safety, Faculty of Public and Environmental Health, University of Khartoum, Khartoum, Sudan
- Division of Toxicology, Wageningen University, Wageningen, The Netherlands
| | - Nazik Eltayeb Musa Mustafa
- Department of Food Hygiene and Safety, Faculty of Public and Environmental Health, University of Khartoum, Khartoum, Sudan
- Environmental Health Department, College of Health Sciences, University of Sharjah, Sharjah, UAE
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Shivappa N, Hébert JR, Ferraroni M, La Vecchia C, Rossi M. Association between Dietary Inflammatory Index and Gastric Cancer Risk in an Italian Case-Control Study. Nutr Cancer 2016; 68:1262-1268. [PMID: 27636679 PMCID: PMC5154551 DOI: 10.1080/01635581.2016.1224367] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND In this study, we explored the association between the dietary inflammatory index (DII) and gastric cancer risk in an Italian case-control study. MATERIALS AND METHODS Cases were 230 patients with incident, histologically confirmed cases of gastric cancer from the Greater Milan area, Northern Italy. Controls were 547 frequency-matched subjects admitted to the same network of hospitals as cases for a wide spectrum of acute, non-neoplastic conditions. The DII was computed using a reproducible and valid 78-item food frequency questionnaire. Odds ratios (ORs) were estimated through logistic regression models conditioned on age and sex and adjusted for recognized confounding factors, including total energy intake. RESULTS Subjects with the most pro-inflammatory diet had a higher risk of gastric cancer compared to subjects with the most anti-inflammatory diet (ORQuartile4vs1 = 2.35, 95% confidence interval, 1.32, 4.20; P-trend = 0.004). CONCLUSION These results indicate that a pro-inflammatory diet, as indicated by higher DII score, was associated with increased risk of gastric cancer.
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Affiliation(s)
- Nitin Shivappa
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC 29208, USA
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
- Connecting Health Innovations LLC, Columbia, SC, 29229, USA
| | - James R. Hébert
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC 29208, USA
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
- Connecting Health Innovations LLC, Columbia, SC, 29229, USA
- Department of Family and Preventive Medicine, University of South Carolina School of Medicine, Columbia, South Carolina, 29208, USA
| | - Monica Ferraroni
- Department of Clinical Sciences and Community Health. Universitá degli Studi di Milano, Milan, Italy
| | - Carlo La Vecchia
- Department of Clinical Sciences and Community Health. Universitá degli Studi di Milano, Milan, Italy
| | - Marta Rossi
- Department of Clinical Sciences and Community Health. Universitá degli Studi di Milano, Milan, Italy
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Wang Y, Zhang XN, Xie WH, Zheng YX, Cao JP, Cao PR, Chen QJ, Li X, Sun CD. The Growth of SGC-7901 Tumor Xenografts Was Suppressed by Chinese Bayberry Anthocyanin Extract through Upregulating KLF6 Gene Expression. Nutrients 2016; 8:nu8100599. [PMID: 27690088 PMCID: PMC5083987 DOI: 10.3390/nu8100599] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 09/03/2016] [Accepted: 09/20/2016] [Indexed: 01/12/2023] Open
Abstract
To investigate the antitumor effect of anthocyanins extracted from Chinese bayberry fruit (Myrica rubra Sieb. et Zucc.), a nude mouse tumor xenograft model was established. Treatments with C3G (cyanidin-3-glucoside, an anthocyanin) significantly suppressed the growth of SGC-7901 tumor xenografts in a dose-dependent manner. Immunohistochemical staining showed a significant increase in p21 expression, indicating that the cell cycle of tumor xenografts was inhibited. qPCR screening showed that C3G treatment up-regulated the expression of the KLF6 gene, which is an important tumor suppressor gene inactivated in many human cancers. Western blot showed that C3G treatments markedly increased KLF6 and p21 protein levels, inhibited CDK4 and Cyclin D1 expression, but did not notably change the expression of p53. These results indicated that KLF6 up-regulates p21 in a p53-independent manner and significantly reduces tumor proliferation. This study provides important information for the possible mechanism of C3G-induced antitumor activity against gastric adenocarcinoma in vivo.
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Affiliation(s)
- Yue Wang
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
| | - Xia-Nan Zhang
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
| | - Wen-Hua Xie
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
| | - Yi-Xiong Zheng
- Department of Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China.
| | - Jin-Ping Cao
- Taizhou Academy of Agricultural Sciences, Linhai 317000, China.
| | - Pei-Rang Cao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Qing-Jun Chen
- National Light Industry Food Quality Inspection Hangzhou Station, Hangzhou 310009, China.
| | - Xian Li
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
| | - Chong-de Sun
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
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Alisson-Silva F, Kawanishi K, Varki A. Human risk of diseases associated with red meat intake: Analysis of current theories and proposed role for metabolic incorporation of a non-human sialic acid. Mol Aspects Med 2016; 51:16-30. [PMID: 27421909 DOI: 10.1016/j.mam.2016.07.002] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/06/2016] [Accepted: 07/07/2016] [Indexed: 02/08/2023]
Abstract
One of the most consistent epidemiological associations between diet and human disease risk is the impact of red meat consumption (beef, pork, and lamb, particularly in processed forms). While risk estimates vary, associations are reported with all-cause mortality, colorectal and other carcinomas, atherosclerotic cardiovascular disease, type II diabetes, and possibly other inflammatory processes. There are many proposed explanations for these associations, some long discussed in the literature. Attempts to explain the effects of red meat consumption have invoked various red meat-associated agents, including saturated fat, high salt intake, Trimethylamine-N-oxide (TMAO) generation by microbiota, and environmental pollutants contaminating red meat, none of which are specific for red meat. Even the frequently mentioned polycyclic aromatic carcinogens arising from high temperature cooking methods are not red meat specific, as these are also generated by grilling poultry or fish, as well as by other forms of cooking. The traditional explanations that appear to be more red meat specific invoke the impact of N-nitroso compounds, heme iron, and the potential of heme to catalyze endogenous nitrosation. However, heme can be denatured by cooking, high levels of plasma hemopexin will block its tissue delivery, and much higher amounts of heme likely originate from red blood cell breakdown in vivo. Therefore, red meat-derived heme could only contribute to colorectal carcinoma risk, via direct local effects. Also, none of these mechanisms explain the apparent human propensity i.e., other carnivores have not been reported at high risk for all these diseases. A more recently proposed hypothesis involves infectious agents in beef from specific dairy cattle as agents of colorectal cancer. We have also described another mechanistic explanation for the human propensity for risk of red-meat associated diseases that is consistent with most observations: metabolic incorporation of a non-human sialic acid N-glycolylneuraminic acid (Neu5Gc) into the tissues of red meat consumers and the subsequent interaction with inflammation-provoking antibodies against this "xenoautoantigen". Overall, we conclude that while multiple mechanisms are likely operative, many proposed theories to date are not specific for red meat, and that the viral and xenoautoantigen theories deserve further consideration. Importantly, there are potential non-toxic dietary antidotes, if the xenoautoantigen theory is indeed correct.
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Affiliation(s)
- Frederico Alisson-Silva
- Glycobiology Research and Training Center (GRTC), Center for Academic Research and Training in Anthropogeny (CARTA), Departments of Medicine and Cellular & Molecular Medicine, UC San Diego, La Jolla, CA 92093-0687, USA
| | - Kunio Kawanishi
- Glycobiology Research and Training Center (GRTC), Center for Academic Research and Training in Anthropogeny (CARTA), Departments of Medicine and Cellular & Molecular Medicine, UC San Diego, La Jolla, CA 92093-0687, USA
| | - Ajit Varki
- Glycobiology Research and Training Center (GRTC), Center for Academic Research and Training in Anthropogeny (CARTA), Departments of Medicine and Cellular & Molecular Medicine, UC San Diego, La Jolla, CA 92093-0687, USA.
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Nishizawa T, Suzuki H, Sakitani K, Yamashita H, Yoshida S, Hata K, Kanazawa T, Fujiwara N, Kanai T, Yahagi N, Toyoshima O. Family history is an independent risk factor for the progression of gastric atrophy among patients with Helicobacter pylori infection. United European Gastroenterol J 2016; 5:32-36. [PMID: 28405319 DOI: 10.1177/2050640616642341] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 03/08/2016] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND AIM Risk factors for progression of gastric atrophy have not been fully elucidated. The aim of this study was to evaluate the risk factors for the development of atrophic gastritis in patients with Helicobacter pylori (H. pylori ) infection. METHODS We reviewed 206 H. pylori-infected patients retrospectively. Endoscopic gastric atrophy was classified into closed- and open-type. We conducted univariate and multivariate logistic regression analyses on the contribution of age, sex, body mass index, past history of cancer, the first-degree family history of gastric cancer, habitual smoking and alcohol drinking, and endoscopic findings of gastric ulcer or duodenal ulcer for open-type gastric atrophy. RESULTS On multivariate analysis, age (odds ratio = 1.079, 95% confidence interval = 1.048-1.11, p < 0.001), family history of gastric cancer (odds ratio = 3.967, 95% confidence interval = 1.414-10.6, p = 0.006) and duodenal ulcer (odds ratio = 0.834, 95% confidence interval = 0.711-0.977, p = 0.024) were the factors independently associated with open-type gastric atrophy. CONCLUSIONS A first-degree family history of gastric cancer, absence of duodenal ulcer, and old age were independent risk factors for the progression of gastric atrophy among H. pylori-infected patients. Careful examination with upper gastrointestinal endoscopy is necessary in patients with such risk factors.
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Affiliation(s)
- Toshihiro Nishizawa
- Gastroenterology, Toyoshima Endoscopy Clinic, Tokyo, Japan; Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Tokyo, Japan; Division of Gastroenterology and Hepatology, Department Of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hidekazu Suzuki
- Medical Education Center, Keio University School of Medicine, Tokyo, Japan
| | - Kosuke Sakitani
- Gastroenterology, Toyoshima Endoscopy Clinic, Tokyo, Japan; Division of Gastroenterology, The Institute for Adult Disease, Asahi Life Foundation, Tokyo, Japan
| | - Hiroharu Yamashita
- Gastroenterology, Toyoshima Endoscopy Clinic, Tokyo, Japan; Department of Gastrointestinal Surgery, The University of Tokyo, Tokyo, Japan
| | - Shuntaro Yoshida
- Gastroenterology, Toyoshima Endoscopy Clinic, Tokyo, Japan; Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Keisuke Hata
- Gastroenterology, Toyoshima Endoscopy Clinic, Tokyo, Japan; Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - Takamitsu Kanazawa
- Gastroenterology, Toyoshima Endoscopy Clinic, Tokyo, Japan; Department of Surgery, The Fraternity Memorial Hospital, Tokyo, Japan
| | - Naoto Fujiwara
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department Of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naohisa Yahagi
- Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Tokyo, Japan
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Zhang S, Qiu D, Liu J, Li Z. Active Components of Fungus Shiraia bambusiscola Can Specifically Induce BGC823 Gastric Cancer Cell Apoptosis. CELL JOURNAL 2016; 18:149-58. [PMID: 27540519 PMCID: PMC4988413 DOI: 10.22074/cellj.2016.4309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 01/06/2016] [Indexed: 11/04/2022]
Abstract
Objective Gastric cancer is a major health issue worldwide. Using a therapeutic approach, with minor side-effects, is very essential for the treatment of the gastric cancer.
Shiraia bambusicola is a parasitic fungus which is widely used in China for curing several
diseases with little side-effects. However, the mechanisms are not well understood yet.
The aim of this study was to further understand the pharmacological mechanisms of Shiraia bambusicola and investigate whether it can be used for curing gastric cancer.
Materials and Methods In this experimental study, we mainly tested the effect of active
components extracted from Shiraia bambusicola on BGC823, A549 and HepG2 cells. We used
MTT assay to test cell viability. We also analyzed morphologic changes caused by apoptosis
using Hoechst 33342 fluorescence staining, as well as cell cycle status and apoptosis ratio using flow-cytometer. In addition, protein expression level was tested by Western-blotting assay.
Results BGC-823 cell proliferation was specifically inhibited by active components of
Shiraia bambusicola. Meanwhile, these active components could induce BGC-823 cells
apoptosis and retard the cell cycle in S/G2 phase. We also determined that two critical
protein markers cleaved Poly(ADP-ribose) polymerase-1 (PARP-1) and FLICE-inhibitory
protein (FLIP), involved in apoptosis process, were regulated by these active components.
Conclusion These data shed light on the treatment of human gastric cancer and conclude
that Shiraia bambusicola can be a good therapeutic candidate for treatment of this malignancy.
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Affiliation(s)
- Shubing Zhang
- Department of Anesthesiology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China; Department of Cell Biology, State Key Laboratory of Medical Genetics and School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Dewen Qiu
- Department of Cell Biology, State Key Laboratory of Medical Genetics and School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Jingjiang Liu
- Department of Cell Biology, State Key Laboratory of Medical Genetics and School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Zhijian Li
- Department of Anesthesiology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
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