Lista de estudios sobre pesticidas: disruptores endocrinos.


.
Theo Colborn, Diane Dumanoski & John Peterson Myers.

Pesticide


Compound


Hormone
system affected

Mechanism

References

Acetochlor
Thyroid
(decrease of thyroid hormone levels, increase in TSH)



Alachlor
Thyroid
(decrease of thyroid hormone levels, increase in TSH)



Aldrin
Estrogen

Binds
to estrogen receptors; competes with estradiol.


Allethrin,
d-trans

Estrogen



Amitrol
Thyroid


Thyroid
peroxidase inhibitors; inhibits thyroid hormone synthesis.

Atrazine
Neuroendocrine-pituitary
(depression of LH surge), testosterone metabolism.

Inhibits
ligand binding to androgen and estrogen receptors.


Carbaryl
Estrogen
and progesterone



Chlofentezine
Thyroid

Enhances
secretion of thyroid hormone.


Chlordane
Testosterone
and progesterone



Cypermethrin
Disruption
of reproductive function



DDT
Estrogen

DDT
and related compounds act in a number of ways to disrupt endocrine
function by binding with the estrogen receptor, including estrogen
mimickry and antagonism, altering the pattern of synthesis or metabolism
of hormones, and (4) modifying hormone receptor levels


DDT
Metabolite, p,p'-DDE

Androgen

Inhibits
androgen binding to the androgen receptor, androgen-induced transcriptional
activity, and androgen action in developing, pubertal and adult
male rats.

Dicofol
(Kelthane)

Estrogen

Dieldrin
Estrogen

Binds
to estrogen receptor;competes with estradiol.


Endosulfan
Estrogen



Ethylene
thiourea

Thyroid

Thyroid
peroxidase inhibitor.


Fenarimol
Estrogen


Estrogen
receptor agonist.

Fenbuconazole
Thyroid

Enhances
secretion of thyroid hormone.


Fenitrothion
Antiandrogen

Competitive
androgen receptor antagonist.


Fenvalerate
Estrogen



Fipronil
Thyroid

Enhances
secretion of thyroid hormone.


Heptachlor
Thyroid



Heptachlor-epoxide
Thyroid/Reproductive

Metabolite
of heptachlor
Reuber
1987


Iprodione
Inhibition
of testosterone synthesis


Karate
Thyroid

A
decrease of thyroid hormone in serum; direct effect on the thyroid
gland?

Kepone
(Chlordecone)

Estrogen

Displays
androgen and estrogen receptor-binding affinities.


Ketoconazole
Effects
on reproductive systems



Lindane
(Hexachlorocyclohexane)

Estrogen/Androgen


Inhibits
ligand binding to androgen and estrogen receptors.

Linuron
Androgen

Androgen
receptor antagonist.


Malathion
Thyroid

Significant
decrease of thyroid hormone in serum, with perhaps a direct effect
on the thyroid gland.


Mancozeb
Thyroid

Thyroid
peroxidase inhibitors.


Maneb
Thyroid

The
metabolite ethylenthiourea inhibits thyroid hormone synthesis.



Methomyl
Thyroid


Methoxychlor
Estrogen

Through
mechanisms other than receptor antagonism. Precise mechanism still
unclear.

Metribuzin
Thyroid


Mirex
Antiandrogenic
activity; inhibits production of LH. Potentially thyroid.




Nitrofen
Thyroid

Structural
similarities to the thyroid hormones; nitrofen or its metabolite
may have thyroid hormone activities.


Nonachlor,
trans-

Estrogen


Estrogen
receptor agonist?

Oxychlordane
Reproductive



Pendimethalin
Thyroid

Enhances
secretion of thyroid hormone.


Pentachloronitrobenzene
Thyroid


Enhances
secretion of thyroid hormone.

Permethrin
Estrogenic



Procymidone
Androgen

Androgen
receptor antagonist.


Prodiamine
Thyroid

Enhances
secretion of thyroid hormone.


Pyrimethanil
Thyroid

Enhances
secretion of thyroid hormone.


Sumithrin
Androgen



Tarstar
Thyroid

A
decrease of thyroid hormone in serum; direct effect on the thyroid
gland?


Thiazopyr
Thyroid

Enhances
secretion of thyroid hormone.


Thiram
Neuroendocrine-pituitary
(depression of LH surge), thyroid (decrease of T4, increase of TSH)



Toxaphene
Estrogen/
Thyroid



Triadimefon
Estrogen

Estrogen
receptor agonist.


Triadimenol
Estrogen


Estrogen
receptor agonist

Tributyltin
Reproductive



Trifluralin
Reproductive/
Metabolic



Vinclozolin
Androgen


Anti-androgenic.
(Competes with androgens for the androgen
receptor (AR), inhibits AR-DNA binding, and alters androgen-dependent
gene expression.)



Zineb
Thyroid

The
metabolite ethylenthiourea inhibits thyroid hormone synthesis.


Ziram
Thyroid


Inhibits
the iodide peroxidase. Structural similarities between ziram and
thiram; ziram can be metabolized to thiram in the environment.