Amniotic fluid cell cultures were screened for mycoplasma contamination. Mycoplasma RNA's were observed in more than half the cultures examined. Karyotypic analyses of these contaminated cell cultures revealed a significant increase in chromosomal aberrations. These studies emphasize the need for screening for mycoplasma in cultured amniotic cells.
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http://dx.doi.org/10.1126/science.184.4135.477 | DOI Listing |
Arch Razi Inst
June 2024
Razi Vaccine and Serum Research Institute, Agricultural Research Education and Extension Organization (AREEO), P.O. Box 31975-148, Karaj, Iran.
There is always a concern about the quality of cell-based products in terms of the contamination of the cells and their lack of efficiency. Therefore, it is of prime importance to ensure these cells' identity, purity, efficacy, and suitability for the production of biological products and diagnostic uses. Hence, cells must be identified, evaluated, documented, and stored to be used consistently and efficiently.
View Article and Find Full Text PDFJ Fish Dis
December 2024
Key Laboratory of Fishery Drug Development, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Aquatic Animal Immunology and Sustainable Aquaculture, Pearl River Fishery Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China.
J Feline Med Surg
December 2024
Centre Hospitalier Vétérinaire Fregis - IVC Evidensia France, Paris, France.
Objectives: The aim of this retrospective cohort study was to compare two groups of cats with lower respiratory tract disease, one with detected by PCR in the bronchoalveolar lavage fluid (BALF) (M+) and the other without (M-), with regard to signalment, clinical signs, diagnostic results, treatment response and survival.
Methods: All cats for which was investigated by PCR in BALF between 2016 and 2023 were included. Cats with evidence of oropharyngeal contamination, or for which PCR results were under the quantification level, or without follow-up information were excluded.
Regen Ther
March 2025
Center for Stem Cell and Regenerative Medicine, Institute of Science Tokyo, 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan.
Introduction: Cell-processing operations can potentially contaminate biosafety cabinets, which should be maintained sterile. However, unintended contamination can occur owing to the presence of viruses, mycoplasmas, and bacteria in the raw materials. Moreover, although several methods for expunging these contaminants have been proposed, an optimal method has not yet been determined.
View Article and Find Full Text PDFJDS Commun
November 2024
Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824.
Hemotropic mycoplasmas are unculturable bacteria that infect the surface of red blood cells of several mammalian species including cattle. The importance of hemoplasmas in cattle remains unclear and limited information is available about biological routes of transmission. The objective of this cross-sectional study was to determine the prevalence of transplacental transmission of hemoplasmas and to determine if colostrum of infected cows contained DNA from hemoplasma organisms.
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