Although individual tar food colors are controlled based on acceptable daily intake (ADI), there is no apparent information available for how combinations of these additives affect food safety. In the current study, the potencies of single and combination use of /dyes/ were examined on neural progenitor cell (NPC) toxicity, a biomarker for developmental stage, and neurogenesis, indicative of adult central nervous system (CNS) functions. /Allura red AC/ and /amaranth/ reduced NPC proliferation and viability in mouse multipotent NPC, in the developing CNS model. Among several combinations tested in mouse model, combination of /tartrazine /and /brilliant blue FCF / at 1000-fold higher than average daily intake in Korea significantly decreased numbers of newly generated cells in adult mouse hippocampus, indicating potent adverse actions on hippocampal neurogenesis. However, other combinations including /allura red AC/ and /amaranth/ did not affect adult hippocampal neurogenesis in the dentate gyrus. Evidence indicates that single and combination use of most tar food colors may be safe with respect to risk using developmental NPC and adult hippocampal neurogenesis. However, the response to excessively high dose combination of /tartrazine/ and /brilliant blue FCF/ suggestive of synergistic effects to suppress proliferation of NPC in adult hippocampus. Data indicated that combinations of tar colors may adversely affect both developmental and adult hippocampal neurogenesis...
/SRP:/ Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR if necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on the left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Poisons A and B/
/SRP:/ Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if needed. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 mL/kg up to 200 mL of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool ... . Cover skin burns with dry sterile dressings after decontamination ... . /Poisons A and B/
/SRP:/ Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Positive-pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Consider administering a beta agonist such as albuterol for severe bronchospasm ... . Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Watch for signs of fluid overload ... . Treat seizures with diazepam or lorazepam ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Poisons A and B/
The absorption, metabolism and excretion of (14)C-labelled Green S and Brilliant Blue FCF have been studied in the rat, mouse and guinea-pig. Following administration of a single oral dose of Green S at either 100 ug/kg or 10 mg/kg of Brilliant Blue FCF at either 30 ug/kg or 3 mg/kg to male or female rats, substantially all of the dose was excreted unchanged in the feces within 72 hr. Pretreating male rats with unlabelled Green S or Brilliant Blue FCF in the diet (100 or 30 mg/kg day, respectively) for 21 days prior to dosing with (14)C-labelled coloring had no effect on the route of excretion or the time taken to eliminate all of the label. Similarly male mice and guinea-pigs excreted in the feces all of a single oral dose of Green S or Brilliant Blue FCF. The lack of absorption and metabolism of the labelled dye in the gastro-intestinal tract of all three species investigated was confirmed by studies using isolated loops of small intestine. It was shown that no radioactivity was taken up by the fetuses of pregnant rats given (14)C-labelled Green S or Brilliant Blue FCF.
Female Sprague-Dawley rats were given a single dose (0.27 mg; 1.74 uCi) of the (14)C-labelled coloring by gavage. In bile-duct ligated rats, intestinal absorption of FD & C Blue No.1 (estimated from urinary (14)C excretion, expired (14)CO2 and residual radioactivity in internal organs and tissues 96 hr after oral administration) averaged 2.05% of the dose. Mean fecal excretion was 97.28% and the total recovery of administered radioactivity was 99.38%. Intestinal absorption (14)C-FD & C Blue No. 1 in intact rats averaged only 0.27% (91% recovery), while biliary excretion in bile-duct cannulated animals averaged 1.32% of the dose. Thin-layer chromatography of urine and bile samples revealed that about 95% of excreted radioactivity was unaltered FD & C Blue No. 1 and that about 5% was an unidentified metabolite or degradation product of FD & C Blue No. 1. The results show that FD & C Blue No.1 is poorly absorbed from the gastro-intestinal tract, and undergoes subsequent rapid and complete biliary excretion /of the absorbed compound/.
... Less than 0.05% of a labeled dose of 3 mg/kg bw was excreted in the bile of rats over a 5-hour period. Very little radioactivity (0.004 - 0.006% of dose) was detected on day 11 in the fetuses of pregnant rats given (14)C-labelled Brilliant Blue FCF orally on day 8 of gestation. ... Brilliant Blue FCF was labeled with (14)C in the central methane ring and had a radioactive purity of greater than 95%. ...
Following administration of either 30 ug/kg bw or 3 mg/kg bw of (14)C-Brilliant Blue FCF by gavage to male or female rats, substantially all of the dose was excreted unchanged in the feces within 72 hours (99.9% at low dose, 95.4% at high dose). No radioactivity was detected in the expired air and less than 0.5% was detected in the urine. ...