PMID- 7265321 OWN - NLM STAT- MEDLINE DCOM- 19811014 LR - 20190909 IS - 0388-1350 (Print) IS - 0388-1350 (Linking) VI - 5 Suppl DP - 1980 Dec TI - [Acute toxicity of lentinan in mice and rats (author's transl)]. PG - 1-9 AB - A new anti-tumor polysaccharide, lentinan (beta-1, 3 Glucan) was studied on the acute toxicities using both sexes of mice (ICR) and rats (CD) treated by intravenously (i.v.) intraperitoneally (i.p.), subcutaneously (s.c.) and orally (p.o). LD50 values in mg/kg body weight were essentially the same regardless of species as well as sexes and estimated as follows: 250-500 (i.v.) greater than 2500 (i.p., s.c., and p.o.). Cyanosis, convulsion and death were observed in both species of animals administered (i.v.) with only higher dosages of lentinan. No remarkable toxic signs being specific from lentinan were observed in any cases of treatment, i.p., s.c., and p.o. Gross findings: enlargement of the spleen (i.v., i.p., s.c.) and coarse nodular surface of the kidney (i.v.) in the both species of animals, erythema of the ears (i.v., i.p., s.c.) in mice, mesenteric petechial hemorrhage of the lung and abdomen (i.v.) enlargement of the mesenteric lymph nodes (i.v.) and edema of the diaphragm and intestine (i.p.) in rats were observed. In parallel, another sample of lentinan for clinical use prepared by freeze-dried procedure was tested in both sexes of mice and rats treated by i.v. alone, comparing with a original sample mentioned above. So far as the acute toxicities of lentinans concerned, no significant differences between two preparations were observed. FAU - Moriyuki, H AU - Moriyuki H FAU - Ichimura, M AU - Ichimura M LA - jpn PT - English Abstract PT - Journal Article PL - Japan TA - J Toxicol Sci JT - The Journal of toxicological sciences JID - 7805798 RN - 0 (Polysaccharides) RN - 37339-90-5 (Lentinan) SB - IM MH - Animals MH - Female MH - Lentinan/administration & dosage/*toxicity MH - Lethal Dose 50 MH - Male MH - Mice MH - Mice, Inbred ICR MH - Polysaccharides/*toxicity MH - Rats EDAT- 1980/12/01 00:00 MHDA- 1980/12/01 00:01 CRDT- 1980/12/01 00:00 PHST- 1980/12/01 00:00 [pubmed] PHST- 1980/12/01 00:01 [medline] PHST- 1980/12/01 00:00 [entrez] AID - 10.2131/jts.5.supplement_1 [doi] PST - ppublish SO - J Toxicol Sci. 1980 Dec;5 Suppl:1-9. doi: 10.2131/jts.5.supplement_1.