Evaluation of the extraction method for the cytotoxicity testing of latex gloves.
In this study, the cytotoxicity of medical latex gloves to cultured L-929 cells was determined using various extraction conditions. According to the extraction time and temperature, three types of extraction conditions were used: 1) 24 h at 37 degrees C; 2) 72 h at 37 degrees C; 3) 72 h at 50 degrees C. Also, four different extraction vehicles were used, namely, distilled water (DW), 9 g/l sodium chloride (saline) in DW, and culture media with or without serum. Under the above-mentioned conditions, the samples were extracted and then 2-fold serially diluted in the concentration range 3.13 - 50%. When extracted with either DW or saline for 24 h or 72 h at 37 degrees C, only 50% diluted samples showed distinct cytotoxicity to L-929 cells. Moreover, no cytotoxic potentials were observed when gloves were extracted with DW or saline at 50 degrees C for 72 h. Cytotoxicity was markedly greater when gloves were extracted with culture medium, irrespective of the presence of serum in the medium. These results suggest that optimal extraction conditions should be established for the cytotoxicity evaluations of biomaterials and medical devices.
Baek
Hyun Sook
HS
Department of Medical Engineering, Yonsei University College of Medicine, 134 Shinchon-dong, Seodaemun-ku, Seoul 120-752, Korea. parkjc@yumc.yonsei.ac.kr.
Yoo
Ja Young
JY
Rah
Dong Kyun
DK
Han
Dong-Wook
DW
Lee
Dong Hee
DH
Kwon
Oh-Hun
OH
Park
Jong-Chul
JC
D000818:Animals; D002470:Cell Survival / Q000187:drug effects*; D002478:Cells, Cultured; D003470:Culture Media; D017575:Gloves, Protective; D007840:Latex / Q000302:isolation & purification* / Q000633:toxicity*; D051379:Mice; D013696:Temperature; D018675:Toxicity Tests / Q000379:methods*
D003470:Culture Media; D007840:Latex