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Natural health product regulation

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https://www.readbyqxmd.com/read/29337587/use-of-lactic-acid-bacteria-and-yeasts-to-reduce-exposure-to-chemical-food-contaminants-and-toxicity
#1
Gabriela Matuoka Chiocchetti, Carlos Jadán-Piedra, Vicente Monedero, Manuel Zúñiga, Dinoraz Vélez, Vicenta Devesa
Chemical contaminants that are present in food pose a health problem and their levels are controlled by national and international food safety organizations. Despite increasing regulation, foods that exceed legal limits reach the market. In Europe, the number of notifications of chemical contamination due to pesticide residues, mycotoxins and metals is particularly high. Moreover, in many parts of the world, drinking water contains high levels of chemical contaminants owing to geogenic or anthropogenic causes...
January 16, 2018: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29321313/tip60-complex-inhibits-hbv-transcription
#2
Hironori Nishitsuji, Saneyuki Ujino, Keisuke Harada, Kunitada Shimotohno
Hepatitis B virus (HBV) is a global major health problem with over one million deaths annually caused by chronic liver damage. Understanding host factors that modulate HBV replication may aid the development of anti-HBV therapies. Our recent genome-wide small interfering RNA screen using recombinant HBV demonstrated that TIP60 inhibited HBV infection. Here, we show that TIP60 complex contributes to anti-HBV defense. The TIP60 complex bound to the HBV promoter and suppressed HBV transcription driven by the precore/core promoter...
January 10, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29305508/comparative-transcriptome-analysis-reveals-the-mechanism-underlying-3-5-dibromo-4-hydroxybenzoate-catabolism-via-a-new-oxidative-decarboxylation-pathway
#3
Kai Chen, Yang Mu, Shanshan Jian, Xiaoxia Zang, Qing Chen, Weibin Jia, Zhuang Ke, Yanzheng Gao, Jiandong Jiang
The compound 3,5-dibromo-4-hydroxybenzoate (DBHB) is both anthropogenically released into and naturally produced in the environment, and its environmental fate is of great concern. Aerobic and anaerobic reductive dehalogenations are the only two reported pathways for DBHB catabolism. In this study, a new oxidative-decarboxylation pathway for DBHB catabolism was identified in a DBHB-utilizing strain of Pigmentiphaga sp. H8. The genetic determinants underlying this pathway were elucidated based on comparative transcriptome analysis and subsequent experimental validation...
January 5, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29299181/antioxidant-agents-against-trichothecenes-new-hints-for-oxidative-stress-treatment
#4
REVIEW
Qinghua Wu, Xu Wang, Eugenie Nepovimova, Yun Wang, Hualin Yang, Li Li, Xiujuan Zhang, Kamil Kuca
Trichothecenes are a group of mycotoxins mainly produced by fungi of genus Fusarium. Due to high toxicity and widespread dissemination, T-2 toxin and deoxynivalenol (DON) are considered to be the most important compounds of this class. Trichothecenes generate free radicals, including reactive oxygen species (ROS), which induce lipid peroxidation, decrease levels of antioxidant enzymes, and ultimately lead to apoptosis. Consequently, oxidative stress is an active area of research on the toxic mechanisms of trichothecenes, and identification of antioxidant agents that could be used against trichothecenes is crucial for human health...
December 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/29298131/a-systematic-review-of-p53-regulation-of-oxidative-stress-in-skeletal-muscle
#5
Kaitlyn Beyfuss, David A Hood
BACKGROUND: p53 is a tumor suppressor protein involved in regulating a wide array of signaling pathways. The role of p53 in the cell is determined by the type of imposed oxidative stress, its intensity and duration. The last decade of research has unravelled a dual nature in the function of p53 in mediating the oxidative stress burden. However, this is dependent on the specific properties of the applied stress and thus requires further analysis. METHODS: A systematic review was performed following an electronic search of Pubmed, Google Scholar, and ScienceDirect databases...
January 3, 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29289281/mesoporous-carbon-nanomaterials-induced-pulmonary-surfactant-inhibition-cytotoxicity-inflammation-and-lung-fibrosis
#6
Yunan Chen, Yi Yang, Bolong Xu, Shunhao Wang, Bin Li, Juan Ma, Jie Gao, Yi Y Zuo, Sijin Liu
Environmental exposure and health risk upon engineered nanomaterials are increasingly concerned. The family of mesoporous carbon nanomaterials (MCNs) is a rising star in nanotechnology for multidisciplinary research with versatile applications in electronics, energy and gas storage, and biomedicine. Meanwhile, there is mounting concern on their environmental health risks due to the growing production and usage of MCNs. The lung is the primary site for particle invasion under environmental exposure to nanomaterials...
December 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/29287199/trillium-tschonoskii-maxim-saponin-mitigates-d-galactose-induced-brain-aging-of-rats-through-rescuing-dysfunctional-autophagy-mediated-by-rheb-mtor-signal-pathway
#7
Lingjie Wang, Junlong Du, Fangyu Zhao, Zonghai Chen, Jingru Chang, Furong Qin, Zili Wang, Fengjie Wang, Xianbing Chen, Ning Chen
During the expansion of aging population, the study correlated with brain aging is one of the important research topics. Developing novel and effective strategies for delaying brain aging is highly desired. Brain aging is characteristics of impaired cognitive capacity due to dysfunctional autophagy regulated by Rheb-mTOR signal pathway in hippocampal tissues. In the present study, we have established a rat model with brain aging through subcutaneous injection of D-galactose (D-gal). Upon the intervention of Trillium tschonoskii Maxim (TTM) saponin, one of bioactive components from local natural herbs in China, the learning and memory capacity of D-gal-induced aging rats was evaluated through Morris water maze test, and the regulation of Rheb-mTOR signal pathway and functional status of autophagy in hippocampal tissues of D-gal-induced aging rats was explored by Western blot...
December 26, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29285812/are-government-approved-products-containing-new-psychoactive-substances-perceived-to-be-safer-and-more-socially-acceptable-than-alcohol-tobacco-and-illegal-drugs-findings-from-a-survey-of-police-arrestees-in-new-zealand
#8
Marta Rychert, Chris Wilkins, Karl Parker, Karen Witten
INTRODUCTION AND AIMS: In July 2013, New Zealand passed the Psychoactive Substances Act (PSA), which established a legal regulated market for government-approved products containing new psychoactive substances (NPS). One of the aims of the PSA was to separate the market for approved NPS products from unapproved products and illegal drugs. The aim of this study was to explore perceived health risks and social acceptability of government-approved NPS compared to unapproved NPS and other drugs...
December 29, 2017: Drug and Alcohol Review
https://www.readbyqxmd.com/read/29277082/routes-of-administration-for-cannabis-use-basic-prevalence-and-related-health-outcomes-a-scoping-review-and-synthesis
#9
Cayley Russell, Sergio Rueda, Robin Room, Mark Tyndall, Benedikt Fischer
BACKGROUND: Cannabis use is common, and associated with adverse health outcomes. 'Routes of administration' (ROAs) for cannabis use have increasingly diversified, in part influenced by developments towards legalization. This paper sought to review data on prevalence and health outcomes associated with different ROAs. METHODS: This scoping review followed a structured approach. Electronic searches for English-language peer-reviewed publications were conducted in primary databases (i...
December 22, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/29273821/the-abuse-potential-of-kratom-according-the-8-factors-of-the-controlled-substances-act-implications-for-regulation-and-research
#10
REVIEW
Jack E Henningfield, Reginald V Fant, Daniel W Wang
RATIONALE: Consideration by the US Drug Enforcement Administration and Food and Drug Administration of placing kratom into Schedule I of the Controlled Substances Act (CSA) requires its evaluation of abuse potential in the context of public health. OBJECTIVE: The objective of the study is to provide a review of kratom abuse potential and its evaluation according to the 8 factors of the CSA. RESULTS: Kratom leaves and extracts have been used for centuries in Southeast Asia and elsewhere to manage pain and other disorders and, by mid-twentieth century, to manage opioid withdrawal...
December 23, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/29241315/natural-antioxidant-extracts-as-food-preservatives
#11
Norma F Santos-Sánchez, Raúl Salas-Coronado, Rogelio Valadez-Blanco, Beatriz Hernández-Carlos, Paula C Guadarrama-Mendoza
The food industry is becoming more specialized and processing methods are continuously being developed to meet consumer needs. Consumers demand products that are safe and preferably free of synthetic additives. These additives are associated with health effects, in most cases without reasonable justification. Consequently, consumers are looking for clearly labelled products that guarantee the absence of synthetic additives. This has led to the need to search for natural additives, which the food industry claims arenatural antioxidant preservatives...
October 2017: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/29237840/human-cytomegalovirus-ul111a-and-us27-gene-products-enhance-the-cxcl12-cxcr4-signaling-axis-via-distinct-mechanisms
#12
Carolyn C Tu, Kathleen L Arnolds, Christine M O'Connor, Juliet V Spencer
Human cytomegalovirus (HCMV) is a prevalent pathogen that establishes lifelong infection in the host. Virus persistence is aided by extensive manipulation of the host immune system, particularly cytokine and chemokine signaling pathways. The HCMV UL111A gene encodes cmvIL-10, an ortholog of human interleukin-10 that has many immunomodulatory effects. We found that cmvIL-10 increased signaling outcomes from human CXCR4, a chemokine receptor with essential roles in hematopoiesis and immune cell trafficking, in response to its natural ligand CXCL12...
December 13, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29227216/front-of-package-nutrition-references-are-positively-associated-with-food-processing
#13
Anthea Christoforou, Naomi Dachner, Rena Mendelson, Valerie Tarasuk
OBJECTIVE: Foods characterized by a high degree of processing are pervasive in the global food supply and concerns have been raised about their contribution to the escalating burden of diet-related disease. It has been suggested that the dominance of these products relates in part to their aggressive on-package marketing. The purpose of the present study was to assess the relationship between the extent and nature of front-of-package (FOP) nutrition references on products sold in Canadian supermarkets and the level of food processing...
January 2018: Public Health Nutrition
https://www.readbyqxmd.com/read/29225575/investigation-of-naturally-occurring-single-nucleotide-variants-in-human-taar1
#14
Jessica Mühlhaus, Juliane Dinter, Sabine Jyrch, Alexander Teumer, Simon F Jacobi, Georg Homuth, Peter Kühnen, Susanna Wiegand, Annette Grüters, Henry Völzke, Klemens Raile, Gunnar Kleinau, Heiko Krude, Heike Biebermann
Activation of trace amine-associated receptor 1 (TAAR1) in endocrine pancreas is involved in weight regulation and glucose homeostasis. The purpose of this study was the identification and characterization of potential TAAR1 variants in patients with overweight/obesity and disturbed glucose homeostasis. Screening for TAAR1 variants was performed in 314 obese or overweight patients with impaired insulin secretion. The detected variants were functionally characterized concerning TAAR1 cell surface expression and signaling properties and their allele frequencies were determined in the population-based Study of Health in Pomerania (SHIP)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29213315/comprehensive-characterization-of-toxicity-of-fermentative-metabolites-on-microbial-growth
#15
Brandon Wilbanks, Cong T Trinh
Background: Volatile carboxylic acids, alcohols, and esters are natural fermentative products, typically derived from anaerobic digestion. These metabolites have important functional roles to regulate cellular metabolisms and broad use as food supplements, flavors and fragrances, solvents, and fuels. Comprehensive characterization of toxic effects of these metabolites on microbial growth under similar conditions is very limited. Results: We characterized a comprehensive list of thirty-two short-chain carboxylic acids, alcohols, and esters on microbial growth of Escherichia coli MG1655 under anaerobic conditions...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29204074/academic-stress-induced-changes-in-th1-and-th2-cytokine-response
#16
Areej M Assaf, Reem Al-Abbassi, Maysaa Al-Binni
Psychological stress stimulates physiological responses releasing catecholamines and corticoids, which act via corresponding receptors on immune cells, producing a shift in the cytokine balance. These responses are variable depending on the nature of stressors. The effect of the academic stress on the production of the Th1-cytokines (TNF-α, IFN-γ, IL-1β, IL-2, IL-6 and IL-8) and Th2-cytokines (IL-1ra, IL-4, IL-5 and IL-10) on 35 medical/health sciences students after completing their questionnaires was investigated...
December 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/29201020/recent-advances-in-the-recombinant-biosynthesis-of-polyphenols
#17
REVIEW
Sonam Chouhan, Kanika Sharma, Jian Zha, Sanjay Guleria, Mattheos A G Koffas
Plants are the source of various natural compounds with pharmaceutical and nutraceutical importance which have shown numerous health benefits with relatively fewer side effects. However, extraction of these compounds from native producers cannot meet the ever-increasing demands of the growing population due to, among other things, the limited production of the active compound(s). Their production depends upon the metabolic demands of the plant and is also subjected to environmental conditions, abundance of crop species and seasonal variations...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29193412/role-of-resveratrol-in-regulation-of-cellular-defense-systems-against-oxidative-stress
#18
REVIEW
Van-Long Truong, Mira Jun, Woo-Sik Jeong
Resveratrol, a natural polyphenolic compound, is found in various kinds of fruits, plants, and their commercial products such as red wine. It has been demonstrated to exhibit a variety of health-promoting effects including prevention and/or treatment of cardiovascular diseases, inflammation, diabetes, neurodegeneration, aging, and cancer. Cellular defensive properties of resveratrol can be explained through its ability of either directly neutralizing reactive oxygen species/reactive nitrogen species (ROS/RNS) or indirectly upregulating the expression of cellular defensive genes...
November 28, 2017: BioFactors
https://www.readbyqxmd.com/read/29165056/citrinin-induces-apoptosis-in-human-hct116-colon-cancer-cells-through-endoplasmic-reticulum-stress
#19
Amal Salah, Chayma Bouaziz, Alexandre Prola, Julie Pires Da Silva, Hassen Bacha, Salwa Abid-Essefi, Christophe Lemaire
The mycotoxin citrinin (CTN) is a natural contaminant of various human foods that may produce serious adverse health problems. Several studies demonstrated that citrinin exerts cytotoxic and genotoxic effects in both in vivo and in vitro systems. However, the precise mechanisms of action (MOA), particularly in intestinal cells remain unclear. The aim of the present study was to examine the precise MOA of citrinin in vitro. Data demonstrated that CTN significantly decreased the number of viable human intestinal HCT116 cells and induced apoptotic events including (1) decrease in ΔѰm indicative of mitochondrial membrane permeabilization, (2) activation of caspase 3, (3) elevated production of reactive oxygen species (ROS) and (4) relative persistence of plasma membrane integrity...
2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/29153170/a-100-year-review-stress-physiology-including-heat-stress
#20
R J Collier, B J Renquist, Y Xiao
Stress is an external event or condition that places a strain on a biological system. The animal response to a stress involves the expenditure of energy to remove or reduce the impact of the stress. This increases maintenance requirements of the animal and results in loss of production. The biological response to stress is divided into acute and chronic phases, with the acute phase lasting hours to a few days and the chronic phase lasting several days to weeks. The acute response is driven by homeostatic regulators of the nervous and endocrine systems and the chronic phase by homeorhetic regulators of the endocrine system...
December 2017: Journal of Dairy Science
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