BACKGROUND: The heavy metal lead has been shown to be associated with a genotoxic risk. Drosophila melanogaster is a model organism commonly utilized in genetic toxicology testing. The endosymbionts--Wolbachia are now very common in both wild populations and laboratory stocks of Drosophila. Wolbachia may induce resistance to pathogenic viruses, filarial nematodes and Plasmodium in fruit fly and mosquito hosts. However the effect of Wolbachia infection on the resistance of their hosts to heavy metal is unknown.
La Revue De Médecine Interne / Fondée ... Par La Société Nationale Francaise De Médecine Interne
INTRODUCTION: Current unusual environmental sources of lead exposure mainly include traditional medicines, either ayurvedic remedies or others, traditional cosmetics (kohl, surma), and the use of traditional earthenware, for storage or cooking. CASE REPORTS: We report two cases of lead poisoning in adults initially identified by paroxysmal abdominal pain or anemia.
To authenticate Ayurvedic medicinal plants Ativisha (Aconitum heterophyllum) and Musta (Cyperus rotundus) at the raw drug source and in prepared herbal products, nrDNA ITS sequence based SCAR markers were designed and validated spp.-specific SCAR primers gave amplicon of 415 bp and 134 bp, respectively, in authentic species. The SCAR primers (Cyr-FP and Cyr-RP) could identify tissue sample containing 750 μg to 4.76 mg/100mg of Musta in complex mixtures of DNA extracted from commercial herbal drugs.
BACKGROUND: In adult populations, emerging evidence indicates that humans are exposed to arsenic by ingestion of contaminated foods such as rice, grains, and juice; yet little is known about arsenic exposure among children. OBJECTIVES: Our goal was to determine whether rice consumption contributes to arsenic exposure in U.S. children.
Kokuritsu Iyakuhin Shokuhin Eisei Kenkyūjo Hōkoku = Bulletin of National Institute of Health Sciences
Currently, consumers are very anxious about many chemical substances contained in foods. To maintain food safety, the Ministry of Health, Labour and Welfare of Japan establishes standards and specifications on toxic chemical substances in foods, establishes analytical methods for surveillance, and investigates the daily dietary intake of food contaminants every year. This paper describes what sorts of standards and specifications for toxic chemical substances in foods have been established and what kinds of research on daily dietary intake have been performed.
Food and Chemical Toxicology: An International Journal Published for the British Industrial Biological Research Association
A number of recent food safety incidents have involved chemical substances, while various activities aim at the early identification of emerging chemical risks. This review considers recent cases of chemical and biochemical risks, as a basis for recommendations for awareness and prevention of similar risks at an early stage.
Many plants of the Ericaceae family, Rhododendron, Pieris, Agarista and Kalmia, contain diterpene grayanotoxins. Consumption of grayanotoxin containing leaves, flowers or secondary products as honey may result in intoxication specifically characterized by dizziness, hypotension and atrial-ventricular block. Symptoms are caused by an inability to inactivate neural sodium ion channels resulting in continuous increased vagal tone. Grayanotoxin containing products are currently sold online, which may pose an increasing risk.