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Russia bans US meat for high levels of ractopamine…Yummy!

Posted on: February 1, 2013

Russia has imposed a temporary ban on US meat starting in February. The restrictions were enacted after the US Veterinary Service failed to meet regulations for levels of ractopamine, which stimulates muscle tissue growth.

Chilled meat will be prohibited from February 4, and frozen meat imports will be banned starting on February 11. According to Russia’s Federal Service for Veterinary and Phytosanitary Surveillance, the US ignored numerous requests from the Russian regulative body, and refused to support its products with documentation confirming the absence of ractopamine.
Similar reactopamine requirements have also been enacted for Canada, Brazil and Mexico: “As of today we got a flat refusal only from American Veterinary Office,” a spokesperson for Russia’s Veterinary Service told Kommersant daily.

Ractopamine is a chemical substance used in cattle and pig feed to increase the animals’ muscle tissue. It can cause toxic effects if ingested by humans, and is prohibited in many countries.

Source: RT

Ractopamine Wiki

Adverse effects

Acute toxicity
Oral LD50 in mouse and rat are 3547–2545 mg/kg bw (male and female) and 474–365 (male and female), respectively.[13]
[edit]Genotoxicity and mutagenicity

Mutation studies in prokaryotes and eukaryotes show that ractopamine is non-mutagenic. However, the results of several in vitro studies, including chromosome aberration tests in human lymphocytes, are positive. The positive genotoxic results are explained with limited evidence to be due to a secondary auto-oxidative mechanism from ractopamine-catechol producing reactive intermediates.

Carcinogenicity
Ractopamine is considered not to be a direct carcinogen. It is not listed by IARC, NTP, ACGIH, or OSHA. The induction of benign leiomyomas (tumors of smooth muscle) in mice and rats can possibly be due to a general feature of beta-adrenergic activity of ractopamine.

Cardiovascular effects
Dose-dependent changes of heart rate and cardiac output are observed within the first hour after administration of ractopamine and gradually return to baseline values. The systolic blood pressure will also increase in a dose-dependent manner, while the diastolic pressure remains unchanged.

Musculo-skeletal effects
Skeletal muscle tremor is the most common adverse effect of beta-agonists, and is more likely to be seen after oral administration than after inhalation. Tremor results from an imbalance between fast- and slow-twitch muscle groups of the extremities, and its severity varies greatly between individuals. No such effects were recorded at the NOEL determined in the toxicological studies conducted in laboratory animals given ractopamine or in the study in humans on cardiovascular effects of ractopamine.

Behavioral changes
Feelings of restlessness, apprehension, and anxiety were reported side-effects after the use of various beta-agonists, particularly after oral or parenteral treatment. In pilot clinical trials with ractopamine, four patients showed little evidence for central nervous system stimulation. It is unclear whether long-term treatment with these drugs results in the development of tolerance to these adverse effects.

A most of us eat this junk!

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