Page last updated: 2024-11-10

amanitins

Description Research Excerpts Clinical Trials Roles Classes Pathways Study Profile Bioassays Related Drugs Related Conditions Protein Interactions Research Growth Market Indicators

Description

Amanitins: Cyclic peptides extracted from carpophores of various mushroom species. They are potent inhibitors of RNA polymerases in most eukaryotic species, blocking the production of mRNA and protein synthesis. These peptides are important in the study of transcription. Alpha-amanitin is the main toxin from the species Amanitia phalloides, poisonous if ingested by humans or animals. [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

Cross-References

ID SourceID
PubMed CID3084077
MeSH IDM0000846

Synonyms (5)

Synonym
11030-71-0
unii-6429kfn06d
6429kfn06d ,
amanitins
2-[34-butan-2-yl-13-(3,4-dihydroxybutan-2-yl)-8,22-dihydroxy-2,5,11,14,30,33,36,39-octaoxo-27-thia-3,6,12,15,25,29,32,35,38-nonazapentacyclo[14.12.11.06,10.018,26.019,24]nonatriaconta-18(26),19(24),20,22-tetraen-4-yl]acetic acid

Research Excerpts

Toxicity

ExcerptReferenceRelevance
"The amatoxins, highly toxic components of Amanita mushrooms, strongly inhibit the DNA-dependent RNA polymerase II (or B) in eukaryotic cell nuclei."( Structure-toxicity relationships in the amatoxin series. Synthesis of S-deoxy[gamma(R)-hydroxy-Ile3]-amaninamide, its crystal and molecular structure and inhibitory efficiency.
Benedetti, E; Di Blasio, B; Pavone, V; Pedone, C; Wieland, T; Zanotti, G, 1989
)
0.28
" Twice as toxic as free alpha-amanitin."( Strongly enhanced toxicity of the mushroom toxin alpha-amanitin by an amatoxin-specific Fab or monoclonal antibody.
Derenzini, M; Faulstich, H; Kirchner, K, 1988
)
0.27
" We report here the selection of a suitable toxic moiety for this system."( Toxicity of ricin, diphtheria toxin and alpha-Amanitin for Acanthamoeba castellanii (1983).
Howell, MD; Villemez, CL, 1984
)
0.27
" amanitins) does not established straight correlation between their in vivo LD50 and inhibitory constants (Ki) toward RNA polymerase III in vitro determined we supposed some additional toxic effects of these toxins might contribute to their severe hepatotoxicity."( Free radical reactions might contribute to severe alpha amanitin hepatotoxicity--a hypothesis.
Gadzheva, V; Platikanova, M; Tolekova, A; Uzunova, V; Zhelev, M; Zheleva, A, 2007
)
1.25
" Ingestion of toxic mushrooms may result in serious toxicity, including death."( Mushroom poisoning: a study on circumstances of exposure and patterns of toxicity.
Bodmer, M; Ceschi, A; Kullak-Ublick, GA; Kupferschmidt, H; Rauber-Lüthy, C; Schenk-Jaeger, KM, 2012
)
0.38
" Nevertheless, accidental ingestion of toxic mushrooms can be responsible for severe or fatal poisonings."( Mushroom poisoning: a study on circumstances of exposure and patterns of toxicity.
Bodmer, M; Ceschi, A; Kullak-Ublick, GA; Kupferschmidt, H; Rauber-Lüthy, C; Schenk-Jaeger, KM, 2012
)
0.38
" Therefore, this study is aimed at comparing the toxic effects of alpha- and beta-amanitin on the MCF-7 cell line."( Evaluation and comparison of alpha- and beta-amanitin toxicity on MCF-7 cell line.
Bayram, R; Bayram, S; Gepdıremen, AA; Kaya, E; Yavuz, MZ; Yaykaşli, E; Yaykaşli, KO; Yilmaz, İ, 2014
)
0.4

Bioavailability

ExcerptReferenceRelevance
" Science has contributed to improving the bioavailability of silibinin thus making it more effective."( [Silibinin and its hepatoprotective action from the perspective of a toxicologist].
Kostek, H; Lewandowska-Stanek, H; Majewska, M; Szponar, J; Tchórz, M, 2012
)
0.38

Dosage Studied

ExcerptRelevanceReference
" The dose-response curve is steep; the pH optimum is in the weakly acid range."( The haemolytic effect of phallolysin.
Burkhardt, M; Feulner, L; Haupt, M; Seeger, R, 1976
)
0.26
" In a comprehensive series of experiments, various dosage schedules were explored."( Cytochrome C as antidote in mice poisoned with the mushroom toxin alpha-amanitin.
Floersheim, GL, 1977
)
0.26
" It is pointed out, that in a modern treatment there must be given Penicillin-G-Natrium in high dosage as early as possible, also in cases of questionableness."( [Mushroom poisoning in childhood].
Gudowski, G; Koloc, C; Rechlin, R, 1979
)
0.26
" In measurements of cytosolic free calcium concentration ([Ca2+]i) by flow cytometry in Indo-1-loaded platelets, ADP's dose-response for actin polymerization was similar to that for calcium mobilization."( Heterogeneity in filamentous actin content among individual human blood platelets.
Cabral, C; Daley, JF; Kang, JH; Oda, A; Salzman, EW; Smith, M, 1992
)
0.28
" The mast-cell-degranulating potency of rubenscenslysin and fascicularelysin roughly corresponded to their haemolytic potency; the dose-response curves were extremely steep and the cells were either completely destroyed or remained intact."( Degranulation of rat mast cells in vitro by the fungal cytolysins phallolysin, rubescenslysin and fascicularelysin.
Bunsen, E; Seeger, R, 1980
)
0.26
" Since induction of ME activity by JH and JH analogs displayed a dose-response curve, specific for each tested component, we concluded that the hormonal action could be mediated through a receptor."( Regulation of cytosolic malate dehydrogenase by juvenile hormone in Drosophila melanogaster.
Danis, P; Farkas, R; Knopp, J; Mechler, BM; Medved'ová, L, 2002
)
0.31
" 6 h after poisoning in three cumulative dosing groups: 250 mg/kg; 500 mg/kg; and 1600 mg/kg."( Use of amifostine, a novel cytoprotective, in alpha-amanitin poisoning.
Haller, NA; Peter, D; White, LJ; Wills, BK, 2005
)
0.33
" Repeated dosing was administered intraperitoneally every 4 to 6 hours for 48 hours."( Comparative treatment of alpha-amanitin poisoning with N-acetylcysteine, benzylpenicillin, cimetidine, thioctic acid, and silybin in a murine model.
Betten, DP; Clark, RF; Favata, M; Hernandez, M; Richardson, WH; Riffenburgh, RH; Tanen, DA; Tong, TC, 2007
)
0.34
" In Drosophila this is achieved by targeting the dosage compensation complex or the male-specific lethal (MSL) complex to the male X chromosome."( Cotranscriptional recruitment of the dosage compensation complex to X-linked target genes.
Akhtar, A; Kind, J, 2007
)
0.34
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (1,571)

TimeframeStudies, This Drug (%)All Drugs %
pre-1990937 (59.64)18.7374
1990's325 (20.69)18.2507
2000's186 (11.84)29.6817
2010's71 (4.52)24.3611
2020's52 (3.31)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Market Indicators

Research Demand Index: 68.88

According to the monthly volume, diversity, and competition of internet searches for this compound, as well the volume and growth of publications, there is estimated to be very strong demand-to-supply ratio for research on this compound.

MetricThis Compound (vs All)
Research Demand Index68.88 (24.57)
Research Supply Index7.39 (2.92)
Research Growth Index4.32 (4.65)
Search Engine Demand Index120.97 (26.88)
Search Engine Supply Index2.00 (0.95)

This Compound (68.88)

All Compounds (24.57)

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials0 (0.00%)5.53%
Reviews75 (4.64%)6.00%
Case Studies52 (3.22%)4.05%
Observational1 (0.06%)0.25%
Other1,487 (92.07%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]