Draft - work in progress
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- Avocado (as plant) // Persea americana Mill. // Persea gratissima C.F.Gaertn.
Avocado (as plant) // Persea americana Mill. // Persea gratissima C.F.Gaertn.
- Family:
- Lauraceae
- Approval state:
- Approved
- Number of articles retrieved:
- 6490
- Number of processed references:
- 10
Endpoint Studies
#1: Reproductive toxicity - Significant decrease in the number of normal embryos, increase in degenerated embryos, and delayed embryo development.
#2: Rabbits showed weakness, anorexia, depression, dullness, dysponea and mortality.
Heart - pericardium was filled with fluid
Liver - swelling with rounded edges and congestion giving a dark red colour.
Gall bladder - distended with bile
#3: Horses poisoned by avocado leaves, green fruit, seed or bark
#4: Mortality in dogs linked to acute cardiomyopathy
#5: Sub-Acute toxicity in rats at 10 g/kg showed a slight reduction in weight and fluid intake was significantly higher in the treated groups compared to the controls
#6: Mortality in rabbits - 1. Necropsy revealed generalized congestion, pulmonary oedema, pleural and pericardial effusions, and slight ascites
2. Hearts were flabby and markedly pale
3. The liver kidney and stomach were congested and showed necrotic pale areas demarcated from the unaffected region.
4. Histopathological examination occasionally revealed a mild neutrophil and macrophage reaction.
5. Five of the rabbits were found dead the next morning.
#7: Mortality in goats - tachycardia, hyperpnoea and evidence of lung oedema, 3 goats died, increase in both mature and immature neutrophils.
#8: listlessness, dyspnoea, anasarca along the neck, ventral abdomen and thighs, pulmonary congestion, oedema and haemorrhage, moderate nephrosis and cardiomyopathy, infiltration of heterophils. Eight ostriches died, one euthanised after developing similar symptoms.
#9: Cardiomyopathy, granularity of sarkoplasm, karyopyknosis, infiltration of heterophils and proliferation of macrophages in hearts, mild nephrosis and fatty livers in hens
#10: Cardiomyopathy, listlessness, severe hydropericardium, oedema of the pericardium, proventriculus, proliferation of fibroblasts, macrophages and undifferentiated mesenchymal cells, mild nephrosis and pulmonary congestion, anasarca and death in ostriches
Genotoxicity
#1: Lymphocytes cell groups exposed to leaf extract showed all types of aberrations (mean % of aberr. 58 ± 7.05, 72 ± 6.41, and 78 ± 5.98 for 100,200,300 mg/kg respectively) as well as groups exposed to fruit extracts at same concentration (18 ± 5.49, 40 ± 10.00, and 52 ± 10.20), which was significantly higher (p = 0.033, p < 0.0001, and p < 0.0001, respectively) than that for control (6 ± 3.39).
Composition #1: Prinsloo, G., Nogemane, N., Street, R. The use of plants containing genotoxic carcinogens as foods and medicine. food and chemical toxicology, 2018, vol. 116, p. 27–39. DOI: 10.1016/j.fct.2018.04.009.
[
DOI link]
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Plant part:
Unspecified (A07XD)
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Substance:
Estragole (RF-00003806-PAR)
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Analytical method code:
Unspecified (F598A)
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Yes/No Qualitative:
Positive/Present (POS)
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Result type:
Qualitative Value (Binary) (BIN)
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Internal remarks:
Estragol in unspecified plant part
Endpoint study
#1: Benavides, V., Trujillo, G., D'arrigo, G., Paredes, U., Pino, J. Preliminar toxicological assessment of ruta graveolens, origanum vulgare and persea americana on the preimplantational mouse embryos Evaluación toxicologica preliminar de ruta graveolens, origanum vulgarey persea americana sobre embriones preimplantacionales de raton. revista peruana de biologia, 2000, vol. 7, no. 1, p. 86–88. DOI: 10.15381/rpb.v7i1.6734.
[
DOI link]
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Study relevance:
Human health
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Plant part:
Seed (as part-nature) (A066P)
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Preparation/Extraction method:
Solvent extraction (A0BZR)
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Additional plant/substance description:
water
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Type of toxicological test:
reproduction toxicity (CHD009TT)
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Tested organism:
House mouse (as animal) (A0CNT)
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Strain of test organism:
Swiss (CHD005ST)
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-
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Unit of exposure duration:
Hour (G099A)
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Control groups used:
yes, plain diet
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Endpoint measured:
Dose level (CHD014EP)
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Concentration unit:
Percent (G138A)
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Critical effect:
REPRODUCTIVE (TOX05A)
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Target tissue:
Urogenital (TT006A)
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Effect description:
Significant decrease in the number of normal embryos, increase in degenerated embryos, and delayed embryo development.
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Effect or parameter linked to the endpoint:
reproduction (CHD014BE)
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Internal remarks:
Reproductive toxicity - Significant decrease in the number of normal embryos, increase in degenerated embryos, and delayed embryo development.
Endpoint study
#2: Ayub Ali, M., Victoria Chanu, K., Ramdas Singh, W., Ayub Shah, M.A., Leishangthem, G.D. Biochemical and pathological changes associated with avocado leaves poisoning in rabbits - A case report. international journal of research in pharmaceutical sciences, 2010, vol. 1, no. 3, p. 225–228. .
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Study relevance:
Animal (target species) health
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Plant part:
Leaves (as part-nature) (A0EKT)
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Type of toxicological test:
case report (CHD060TT)
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Tested organism:
Rabbit (as animal) (A057T)
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Route of exposure:
OTHER (OECD0PL)
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Number of organisms dosed:
20
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Endpoint measured:
Dose not reported (CHD066EP)
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Critical effect:
HEPATOTOXICITY (TOX02A)
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Target tissue:
cardiovascular / haematological: Heart (TT011A)
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Effect description:
Rabbits showed weakness, anorexia, depression, dullness, dysponea and mortality after eating leaves. Heart - pericardium was filled with fluid, liver - swollen with rounded edges and congestion giving a dark red colour. Gall bladder - distended with bile
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Effect or parameter linked to the endpoint:
mortality (CHD010BE)
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Internal remarks:
Rabbits showed weakness, anorexia, depression, dullness, dysponea and mortality.
Heart - pericardium was filled with fluid
Liver - swelling with rounded edges and congestion giving a dark red colour.
Gall bladder - distended with bile
Endpoint study
#3: Botha, CJ., Naude, TW. Plant poisonings and mycotoxicoses of importance in horses in southern Africa. journal of the south african veterinary association-tydskrif van die suid-afrikaanse veterinere vereniging, 2002, vol. 73, no. 3, p. 91–97. .
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Study relevance:
Animal (target species) health
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Plant part:
Aerial part of plants (as part-nature) (A166F)
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Additional plant/substance description:
leaves, green fruit, seed, bark
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Type of toxicological test:
not reported (CHD015TT)
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Tested organism:
Horse (as animal) (A0B9Z)
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Endpoint measured:
Dose not reported (CHD066EP)
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Critical effect:
PULMONARY AND CARDIAC (TOX08A)
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Target tissue:
cardiovascular / haematological: Heart (TT011A)
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Effect description:
heart failure (respiratory distress, coughing, increased respiratory and heart rates, cardiac arrhythmias, anasarca of the ventral neck and brisket and cyanotic mucous membranes), anorexia, general weakness and recumbency
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Effect or parameter linked to the endpoint:
other (CHD003BE)
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Internal remarks:
Horses poisoned by avocado leaves, green fruit, seed or bark
Endpoint study
#4: Handl, S., Iben, C. Foodstuffs toxic to small animals - a review. wiener tierarztliche monatsschrift, 2008, vol. 95, no. 9-10, p. 235–242. .
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Study relevance:
Animal (target species) health
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Type of toxicological test:
case report (CHD060TT)
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Tested organism:
Dog (as animal) (A0CNL)
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Number of organisms dosed:
2
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Endpoint measured:
Dose not reported (CHD066EP)
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Critical effect:
PULMONARY AND CARDIAC (TOX08A)
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Target tissue:
cardiovascular / haematological: Heart (TT011A)
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Effect description:
mortality linked to acute cardiomyopathy
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Effect or parameter linked to the endpoint:
mortality (CHD010BE)
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Internal remarks:
Mortality in dogs linked to acute cardiomyopathy
Endpoint study
#5: Ozolua, Raymond I., Anaka, Ogochukwu N., Okpo, Stephen O., Idogun, Sylvester E. ACUTE AND SUB-ACUTE TOXICOLOGICAL ASSESSMENT OF THE AQUEOUS SEED EXTRACT OF PERSEA AMERICANA MILL (LAURACEAE) IN RATS. african journal of traditional complementary and alternative medicines, 2009, vol. 6, no. 4, p. 573–578. .
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Study relevance:
Human health
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Plant part:
Seed (as part-nature) (A066P)
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Preparation/Extraction method:
Solvent extraction (A0BZR)
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Additional plant/substance description:
aqueous extract
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Type of toxicological test:
short-term toxicity (CHD017TT)
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Tested organism:
Rat (as animal) (A0CNV)
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Route of exposure:
ORAL: FEED (OECD2230PL)
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Unit of exposure duration:
Day (G134A)
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Number of organisms dosed:
24
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Control groups used:
yes, sham-exposed
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Endpoint measured:
Critical study not identified (CHD037EP)
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Concentration unit:
Gram/kilogram (G015A)
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Effect concentration:
2-10
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Critical effect:
NONE (TOX14A)
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Effect description:
slight reduction in weight and fluid intake was significantly higher in the treated groups compared to the controls, no obvious external symptoms of toxicity
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Effect or parameter linked to the endpoint:
organ weights (CHD012BE)
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Internal remarks:
Sub-Acute toxicity in rats at 10 g/kg showed a slight reduction in weight and fluid intake was significantly higher in the treated groups compared to the controls
Endpoint study
#6: Aguirre, Laura S., Sandoval, Gabriela V., Medina, Diego M., Martinez, Olga G., Micheloud, Juan F. Acute heart failure in rabbits by avocado leaf poisoning. toxicon, 2019, vol. 164, p. 16–19. DOI: 10.1016/j.toxicon.2019.03.024.
[
DOI link]
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Study relevance:
Animal (target species) health
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Plant part:
Leaves (as part-nature) (A0EKT)
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Additional plant/substance description:
freshly cut leaves
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Type of toxicological test:
case report (CHD060TT)
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Tested organism:
Rabbit (as animal) (A057T)
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Route of exposure:
OTHER (OECD0PL)
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Number of organisms dosed:
14
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Endpoint measured:
Dose not reported (CHD066EP)
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Critical effect:
PULMONARY AND CARDIAC (TOX08A)
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Target tissue:
digestive: Liver (TT023A)
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Effect description:
Five of the rabbits were found dead the next morning. The remaining rabbits showed signs of weakness, anorexia, depression, dullness and dyspnea. Later, all rabbits became comatose and finally died.
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Effect or parameter linked to the endpoint:
mortality (CHD010BE)
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Internal remarks:
Mortality in rabbits - 1. Necropsy revealed generalized congestion, pulmonary oedema, pleural and pericardial effusions, and slight ascites
2. Hearts were flabby and markedly pale
3. The liver kidney and stomach were congested and showed necrotic pale areas demarcated from the unaffected region.
4. Histopathological examination occasionally revealed a mild neutrophil and macrophage reaction.
5. Five of the rabbits were found dead the next morning.
Endpoint study
#7: STADLER, P., VANRENSBURG, IBJ., NAUDE, TW. SUSPECTED AVOCADO (PERSEA-AMERICANA) POISONING IN GOATS. journal of the south african veterinary association-tydskrif van die suid-afrikaanse veterinere vereniging, 1991, vol. 62, no. 4, p. 186–188. .
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Study relevance:
Animal (target species) health
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Plant part:
Leaves (as part-nature) (A0EKT)
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Type of toxicological test:
case report (CHD060TT)
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Tested organism:
Goat (as animal) (A057P)
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Route of exposure:
OTHER (OECD0PL)
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Number of organisms dosed:
15
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Control groups used:
no data
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Endpoint measured:
Dose not reported (CHD066EP)
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Critical effect:
PULMONARY AND CARDIAC (TOX08A)
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Target tissue:
cardiovascular / haematological: Blood Coagulation (TT010A)
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Effect description:
tachycardia, hyperpnoea and evidence of lung oedema, 3 goats died, Haematological examinations demonstrated a leucocytosis due to an increase in both mature and immature neutrophils.
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Effect or parameter linked to the endpoint:
mortality (CHD010BE)
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Internal remarks:
Mortality in goats - tachycardia, hyperpnoea and evidence of lung oedema, 3 goats died, increase in both mature and immature neutrophils.
Endpoint study
#8: BURGER, WP., NAUDE, TW., VANRENSBURG, IBJ., BOTHA, CJ., PIENAAR, ACE. CARDIOMYOPATHY IN OSTRICHES (STRUTHIO-CAMELUS) DUE TO AVOCADO (PERSEA-AMERICANA VAR GUATEMALENSIS) INTOXICATION. journal of the south african veterinary association-tydskrif van die suid-afrikaanse veterinere vereniging, 1994, vol. 65, no. 3, p. 113–118. .
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Study relevance:
Animal (target species) health
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Plant part:
Leaves (as part-nature) (A0EKT)
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Type of toxicological test:
case report (CHD060TT)
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Tested organism:
Bird (as animal) (A057X)
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Route of exposure:
OTHER (OECD0PL)
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Number of organisms dosed:
120
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Control groups used:
no data
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Endpoint measured:
Dose not reported (CHD066EP)
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Critical effect:
PULMONARY AND CARDIAC (TOX08A)
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Target tissue:
cardiovascular / haematological: Heart (TT011A)
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Effect description:
listlessness, dyspnoea, anasarca along the neck, ventral abdomen and thighs, pulmonary congestion, oedema and haemorrhage, moderate nephrosis and cardiomyopathy, infiltration of heterophils. 8 ostriches died, 1 euthanised after developing symptoms.
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Effect or parameter linked to the endpoint:
mortality (CHD010BE)
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Internal remarks:
listlessness, dyspnoea, anasarca along the neck, ventral abdomen and thighs, pulmonary congestion, oedema and haemorrhage, moderate nephrosis and cardiomyopathy, infiltration of heterophils. Eight ostriches died, one euthanised after developing similar symptoms.
Endpoint study
#9: BURGER, WP., NAUDE, TW., VANRENSBURG, IBJ., BOTHA, CJ., PIENAAR, ACE. CARDIOMYOPATHY IN OSTRICHES (STRUTHIO-CAMELUS) DUE TO AVOCADO (PERSEA-AMERICANA VAR GUATEMALENSIS) INTOXICATION. journal of the south african veterinary association-tydskrif van die suid-afrikaanse veterinere vereniging, 1994, vol. 65, no. 3, p. 113–118. .
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Study relevance:
Animal (target species) health
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Plant part:
Leaves (as part-nature) (A0EKT)
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Type of toxicological test:
short-term toxicity (CHD017TT)
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Tested organism:
Bird (as animal) (A057X)
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Route of exposure:
ORAL: GAVAGE (OECD2231PL)
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Control groups used:
yes, concurrent vehicle
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Endpoint measured:
Dose not reported (CHD066EP)
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Critical effect:
PULMONARY AND CARDIAC (TOX08A)
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Target tissue:
cardiovascular / haematological: Heart (TT011A)
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Effect description:
Cardiomyopathy, granularity of sarkoplasm, karyopyknosis, infiltration of heterophils and proliferation of macrophages in hearts, mild nephrosis and fatty livers
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Effect or parameter linked to the endpoint:
morphology (CHD013BE)
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Internal remarks:
Cardiomyopathy, granularity of sarkoplasm, karyopyknosis, infiltration of heterophils and proliferation of macrophages in hearts, mild nephrosis and fatty livers in hens
Endpoint study
#10: BURGER, WP., NAUDE, TW., VANRENSBURG, IBJ., BOTHA, CJ., PIENAAR, ACE. CARDIOMYOPATHY IN OSTRICHES (STRUTHIO-CAMELUS) DUE TO AVOCADO (PERSEA-AMERICANA VAR GUATEMALENSIS) INTOXICATION. journal of the south african veterinary association-tydskrif van die suid-afrikaanse veterinere vereniging, 1994, vol. 65, no. 3, p. 113–118. .
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Study relevance:
Animal (target species) health
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Plant part:
Leaves (as part-nature) (A0EKT)
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Type of toxicological test:
short-term toxicity (CHD017TT)
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Tested organism:
Bird (as animal) (A057X)
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Route of exposure:
ORAL: GAVAGE (OECD2231PL)
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Number of organisms dosed:
4
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Control groups used:
yes, concurrent vehicle
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Endpoint measured:
Dose not reported (CHD066EP)
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Critical effect:
PULMONARY AND CARDIAC (TOX08A)
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Target tissue:
cardiovascular / haematological: Heart (TT011A)
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Effect description:
Cardiomyopathy, listlessness, severe hydropericardium, oedema of the pericardium, proventriculus, proliferation of fibroblasts, macrophages and undifferentiated mesenchymal cells, mild nephrosis and pulmonary congestion, anasarca and death
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Effect or parameter linked to the endpoint:
mortality (CHD010BE)
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Internal remarks:
Cardiomyopathy, listlessness, severe hydropericardium, oedema of the pericardium, proventriculus, proliferation of fibroblasts, macrophages and undifferentiated mesenchymal cells, mild nephrosis and pulmonary congestion, anasarca and death in ostriches
Genotox #1: Kulkarni, Paresh., Paul, Rajkumar., Ganesh, N. In vitro Evaluation of Genotoxicity of Avocado (Persea americana) Fruit and Leaf Extracts in Human Peripheral Lymphocytes. journal of environmental science and health part c-environmental carcinogenesis & ecotoxicology reviews, 2010, vol. 28, no. 3, p. 172–187. DOI: 10.1080/10590501.2010.504979.
[
DOI link]
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Study category:
Genotoxicity
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Type of toxicological test:
in vitro mammalian chromosome aberration test (CHD032TT)
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Tested organism:
Human (as organism) (A056J)
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Strain of test organism:
lymphocytes (CHD036ST)
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Exogenous metabolic activation applied:
no data
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Exposure duration for in vivo:
100.0
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Unit of exposure duration:
Milligram/kilogram (G061A)
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Endpoint measured:
chromosome aberration
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Remarks on genotox study:
Lymphocytes exposed to leaf exctract showed all types of aberrations (mean % of aberr. 58 ± 7.05, 72 ± 6.41, and 78 ± 5.98 for 100,200,300 mg/kg respectively) as well as groups exposed to fruit extracts at same concentration (18 ± 5.49, 40 ± 10.00, and 52 ± 10.20).
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Internal remarks:
Lymphocytes cell groups exposed to leaf extract showed all types of aberrations (mean % of aberr. 58 ± 7.05, 72 ± 6.41, and 78 ± 5.98 for 100,200,300 mg/kg respectively) as well as groups exposed to fruit extracts at same concentration (18 ± 5.49, 40 ± 10.00, and 52 ± 10.20), which was significantly higher (p = 0.033, p < 0.0001, and p < 0.0001, respectively) than that for control (6 ± 3.39).
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Internal ID:
WOS:000282026700002