Detail of "33377-72-9"

Reference

Inhibition of rotavirus and enterovirus infections by tea extracts

Inhibition of rotavirus and enterovirus infections by tea extracts. Mukoyama, Atsushi; Ushijima, Hiroshi; Nishimura, Shuichi; Koike, Hinako; Toda, Masako; Hara, Yukihiko; Shimamura, Tadakatsu (Dep. Enteroviruses, Natl. Inst. Health, Musashimurayama 208, Japan). Jpn. J. Med. Sci. Biol., 44(4), 181-6 (English) 1991. CODEN: JJMCAQ. ISSN: 0021-5112. DOCUMENT TYPE: Journal CA Section: 1 (Pharmacology) Section cross-reference(s): 11 Epigallocatechin gallate from green tea and theaflavin digallate from black tea inhibited infections of cultured rhesus monkey kidney MA 104 cells with rotaviruses and enteroviruses. Their antiviral effects were maximally induced when directly added to virus, and their pre- and post-treatment of the cells produced much weak antiviral activity.In this experiment, several chemicals are used like 989-51-5 and 33377-72-9 Antiviral activity of the exts. therefore seems to be attributable to interference with virus adsorption. .

Antibacterial and bactericidal activities of tea extracts and catechins against methicillin resistant Staphylococcus aureus

Antibacterial and bactericidal activities of tea extracts and catechins against methicillin resistant Staphylococcus aureus. Toda, Masako; Okubo, Sachie; Hara, Yukihiko; Shimamura, Tadakatsu (Sch. Med., Showa Univ., Tokyo 142, Japan). Nippon Saikingaku Zasshi, 46(5), 839-45 (Japanese) 1991. CODEN: NSKZAM. ISSN: 0021-4930. DOCUMENT TYPE: Journal CA Section: 10 (Microbial, Algal, and Fungal Biochemistry) Tea ext., (-)-epigallocatechin gallate (EGCg), and theaflavin digallate (TF3) were examd. for their antibacterial and bactericidal activities against methicillin-resistant S. aureus (MRSA) and food poisoning strains of S. aureus. Twenty percent tea ext. (50 mL), EGCg (63 mg) and TF3 (125 mg) added to 1 mL of culture medium each inhibited the growth of all strains of MRSA and food poisoning S. aureus tested. Tea ext. also showed a bactericidal activity against MRSA, even at the same concn. of as in ordinarily brewed tea. EGCg at a concn. of 250 mg/mL showed a bactericidal activity against MRSA but not against food poisoning S. aureus, but at 500 mg/mL reduced markedly the viable no. within 48 h. These results suggest that tea and catechin can be used as prophylactic agents against MRSA infection.Except for chemicals metioned above, 989-51-5 and 33377-72-9 are also used. .