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Table 3 Quantitative evaluation on interspecies differences using human and animal data

From: Dispelling urban myths about default uncertainty factors in chemical risk assessment – sufficient protection against mixture effects?

Substances dataset

Dose metric

Species

Results

Reference

Poisonous metal compounds

Toxic doses

Rat

2.5<Toxic doseRat/Toxic doseHuman<152

[31]

   

Geometric mean (GM) = 12

 

18 chemotherapeutical agents

Lethal Dose (LD)10 and Maximum Tolerated Dose (MTD)

Mouse, rat, hamster, dog, monkey

LD10 (mg/m2)/3 carries 5.9% probability of exceeding MTDHuman

[62, 63]

10 pesticides (single dose) and 12 pesticides (repeated doses)

Various toxic doses

Rat, dog, pig, calf, cow, horse, sheep, steer

1.9<Acute non fatal doseAnimal/Acute non fatal doseHuman<100

[31, 64]

   

GM = 11.

 
   

0.58 <Chronic doseAnimal/Chronic doseHuman<9.4

 
   

GM = 2.9.

 

40 anticancer agents

MTD

Dogs, monkeys

MTD/10 carries a clinical risk human toxicity of 3% (3 out of every 100 drugs)

[65]

107 pharmaceuticals (?)

Toxicity indices

4 to 6 laboratory animal species

Extrapolation of doses (mg/kg) from white rats to man exaggerated tolerable dose 5.5- to 40-fold

[66]

25 chemotherapeutic agents

LD10 and MTD

Mouse, rat, hamster, dog, monkey

The predicted MTDHuman is overestimated for 20% of agents using 0.75 power (caloric demand) scaling, less with body surface scaling

[52]

26 pharmaceuticals

Maximum therapeutic equivalent dose and toxicokinetic parameters

Up to 4 laboratory animal species

Scaling according to metabolic rate underestimated risk to man in 59% of cases

[67]

63 anti-neoplastic drugs

LD10, Toxic Dose Low (TDL) and MTD

Rat, mouse, hamster, dog, monkey

LD10 or TDLMouse/MTDhuman = 8.0 (P95 = 50.9)

[68]

   

LD10 or TDLHamster/MTDhuman = 7.6 (P95 = 52.1)

 
   

LD10 or TDLRat/MTDhuman = 2.6 (P95 = 21.7)

 
   

LD10 or TDLMonkey/MTDhuman = 2.4 (P95 = 15.3)

 
   

LD10 or TDLDog/MTDhuman = 1.2 (P95 = 7.0)

 

61 anti-neoplastic drugs

LD10 and MTD

Mouse, rat, dog, monkey

LD10Mouse /MTDHuman >10 for 37% compounds

[69]

   

LD10Rat /MTDHuman >10 for 19% compounds

 
   

LD10Monkey /MTDHuman >10 for 5% compounds

 
   

LD10Dog/MTDHuman >10 for 3% compounds