A Discussion on the Relationship Between Gender Identity And Prenatal Exposure to Diethylstilbestrol (DES) in 46XY Individuals 

   Table 1

 

 

 

 

Here I compare the physiological effects DES is known to cause with those of AIS and Gonadal Dysgenesis. First lets start with the DES effects as stated on a National Institute of Health's webpage.

 

From - William H. Natcher Center National Institutes of Health Bethesda, Maryland 72): "Observations in DES-exposed male offspring (both humans and mice) include subfertility and infertility, decreased sperm counts, hypoplastic cryptorchid testes, epididymal cysts, testicular tumors, anatomical feminization, microphallus, hypospadias, retained Müllerian remnants, and prostatic inflammation."


Compare these effects with those of Partial AIS and Partial gonadal dysgenesis

 

There are 7 grades of AIS:

From - Androgen Receptor Defects: Historical, Clinical, and Molecular Perspectives (*PDF* slow to load, 139)
"In some cases, particularly those referred to as Reifenstein syndrome, there is more extensive masculinization, the affected individuals having an essentially male, but severely undermasculinized, phenotype with micropenis, perineal hypospadias, and cryptorchidism. A small number of studies also suggest that, in its mildest forms of expression, partial AIS may be manifest simply by uncomplicated hypospadias (204, 205), by infertility in a phenotypically normal male (11,199,200,206), or even by gynecomastia and androgen binding abnormalities."
 
"It is important to note that affected individuals with quite different phenotypes may be present within a single family (27,32,208-210)."

"FIG. 8. Schematic represenation of grading scheme for clinical classification of AIS. Grades are numbered l-7 in order of increasing severity (more defective masculinization). Grade 1: normal masculinization in utero; grade 2: male phenotype with mild defect in masculinization e.g. isolated hypospadias; grade 3: male phenotype with severe defect in masculinization-small penis, perineoscrotal hypospadias, bifid scrotum and/or cryptorchidism; grade 4: severe genital ambiguity-clitoral-like phallus, labioscrotal folds, single perineal orifice; grade 5: female phenotype with posterior labial fusion and clitoromegaly; grade 617: female phenotype (grade 6 if pubic hair present in adulthood, grade 7 if no pubic hair in-adulthood)."

Fig. 8 is the Quigley Scale of classification.Please keep it in mind, especially when thinking about the psychosexual studies mentioned further down, i.e.,176)


 

From - Syndromes of Abnormal Sex Differentiation: A guide for patients and their families (a Johns Hopkins document, see specific syndromes of sex differentiation):

"Partial Gonadal Dysgenesis:
Affected patients may have a combination of Wolffian and Mullerian duct development. The combination of both Wolffian and Mullerian duct development, along with ambiguity of the external structures, indicates that the testes produced more androgens and MIS than those of Complete Gonadal Dysgenesis patients, but not as much as would be seen in normal male development.
"


Now for the Comparison of physical effects

DES

PAIS

cryptorchid testes

cryptorchidism

anatomical feminization

severely undermasculinized,

microphallus

micropenis

hypospadias

hypospadias

infertility

infertility

Remember the description of Gonadal dysgenesis, the effects are closer in similarity to DES because gonadal dysgenesis is the result of insufficient testosterone in the male fetus. DES shuts down testosterone production which is why it was used in the treatment of prostate cancer.

DES

Gonadal dysgenesis

Müllerian remnants

Mullerian duct development

Remarkably similar aren't they?

 

 

 

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