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Conversion of DON to 3-epi-DON in vitro and toxicity reduction of DON in vivo by Lactobacillus rhamnosus.

08:00 EDT 3rd May 2019 | BioPortfolio

Summary of "Conversion of DON to 3-epi-DON in vitro and toxicity reduction of DON in vivo by Lactobacillus rhamnosus."

Deoxynivalenol (DON) is a mycotoxin that contaminates grains and feed. Degradation and toxicity reduction of DON by probiotics benefit human and animal health. Lactobacillus rhamnosus is an FDA-approved probiotic that can be used in children. After screening seven L. rhamnosus strains isolated from human milk, SHA113 showed the highest DON degradation rate of 60% under the optimal conditions of 37 °C, pH 6.0, OD600 = 1.5, 5 mg L-1 DON, and 48 h. When dead and live SHA113 cells were used separately, only the live cells reduced the DON concentration and transformed it into 3-epi-DON. Mice feeding experiments showed that pretreatment with SHA113 for 48 h reduced the toxicity of DON to the immunological system and organs. Directly feeding SHA113 cells could also slightly reduce the DON toxicity. Both in vitro and in vivo experiments indicated that L. rhamnosus has potential to reduce DON toxicity.

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Name: Food & function
ISSN: 2042-650X
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Medical and Biotech [MESH] Definitions

A species of gram-positive, rod-shaped bacteria used in PROBIOTICS.

Immunosuppression by reduction of circulating lymphocytes or by T-cell depletion of bone marrow. The former may be accomplished in vivo by thoracic duct drainage or administration of antilymphocyte serum. The latter is performed ex vivo on bone marrow before its transplantation.

The transfer of mammalian embryos from an in vivo or in vitro environment to a suitable host to improve pregnancy or gestational outcome in human or animal. In human fertility treatment programs, preimplantation embryos ranging from the 4-cell stage to the blastocyst stage are transferred to the uterine cavity between 3-5 days after FERTILIZATION IN VITRO.

Mutagenesis where the mutation is caused by the introduction of foreign DNA sequences into a gene or extragenic sequence. This may occur spontaneously in vivo or be experimentally induced in vivo or in vitro. Proviral DNA insertions into or adjacent to a cellular proto-oncogene can interrupt GENETIC TRANSLATION of the coding sequences or interfere with recognition of regulatory elements and cause unregulated expression of the proto-oncogene resulting in tumor formation.

An antiphospholipid antibody found in association with systemic lupus erythematosus (LUPUS ERYTHEMATOSUS, SYSTEMIC;), ANTIPHOSPHOLIPID SYNDROME; and in a variety of other diseases as well as in healthy individuals. In vitro, the antibody interferes with the conversion of prothrombin to thrombin and prolongs the partial thromboplastin time. In vivo, it exerts a procoagulant effect resulting in thrombosis mainly in the larger veins and arteries. It further causes obstetrical complications, including fetal death and spontaneous abortion, as well as a variety of hematologic and neurologic complications.

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