Co r t i s o l Ab n o r m a l i t y a s a Ca u s e o f E l eva t e d
E s t ro g e n a n d I m m u n e De s t a b i l i z a t i o n
To be published in Medical Hypotheses, 2003
Ihave long regarded adrenal dysfunction as a well- Adrenocorticotropic hormone (ACTH) from the pitu-
spring of excess estrogen which may contribute to hor-
itary stimulates cortisol production. ACTH is
monal imbalances, immune destabilization, and
controlled in turn by the hypothalamic corticotropic-
increased vulnerability to disease. As a practicing clini-
releasing factor (CRF) in a classical feedback loop.
cian, I have consistently found elevated total estrogen
When cortisol blood concentrations rise to a certain
as part of an endocrine-immune derangement present
level, CRF secretion slows, inhibiting ACTH and sub-
in many common diseases of dogs and cats. Ninety
percent of these cases involve spayed females and
The androgens dehydroepiandrosterone (DHEA)
neutered or intact males, so the elevated estrogen can-
and dehydroepiandrosterone sulfate (DHEAS) are the
not be attributed to ovarian activity. Sick and intact
most abundant circulating hormones in the body. These
females, tested outside their estrus period, frequently
substances, known as prohormones because they metab-
have an elevated estrogen level as well.
olize into other hormones, are primarily made in the
The pattern of derangement identified in thousands
zona reticularis of the adrenal cortex. Through enzymat-
of cases over three decades involves insufficient cortisol,
ic actions, they convert to androstenedione, androstene-
high estrogen, and abnormally low IgA, IgG, and IgM
diol, testosterone, and further to the estrogen com-
levels. This pattern undermines homeostasis and sets the
pounds estrone and estradiol.3 Androstenedione is the
stage for malabsorption and digestive disorders, allergies,
most important precursor of estrone, the most abundant
lung and urinary tract problems, sluggish liver function,
circulating estrogen in postmenopausal women.
strange or aggressive behavior, epilepsy, obesity, deadly
Androstenediol has inherent estrogenic activity. 4
viral and bacterial infections, periodontitis, vaccine com-
The exact biological function of adrenal androgens
plications, autoimmunity, and cancer. Moreover, the
and the mechanisms underlying their control is still
same set of imbalances is often present as an underlying
the object of debate. However, it is well known that
enabling mechanism in multiple illnesses.
both may have androgenic and estrogenic effects.5
The adrenal cortex produces a variety of vital
Veterinary researchers have found numerous genetic
hormones. Among them is cortisol, the primary defects resulting from contemporary linebreeding andglucocorticoid made in the middle cortex layer (zona
inbreeding practices.6 Since the 1970s I have reported a
fasciculata). Endogenous cortisol controls inflamma-
cortisol defect in cats and dogs.7 I believe this stems
tion,1 a function that inspired the development of cor-
largely from questionable breeding practices.
tisone drugs, pharmaceutical versions of cortisol. A pro-
Other potential causes for cortisol deficiency include
found loss of cortisol can lead to a critical state of
prolonged stress and toxicity, which may be a significant
deranged metabolism and an inability to deal with stress
acquired cause of adrenal cortical dysfunction. Harvey
and infections. Cortisol exerts a discriminating regula-
states that the adrenal gland is the most vulnerable
tory effect on molecular mediators. These mediators
organ in the endocrine system for toxins, and within the
trigger activity related to both immunity and inflam-
adrenal gland “the majority of effects” have been
mation. A normal level of cortisol seems to be required
observed in the cortex. Such disturbances can
for healthy responses.2 Cortisol deficiency may result
“fundamentally affect the whole body physiology and
in an unresponsive immune system, whereas too
much cortisol—like too much cortisone medication—
When the zona fasciculata cannot make enough cor-
tisol, or for some reason the cortisol is excessively bound
E N D O C R I N E - I M M U N E M E C H A N I S M S A N D H U M A N H E A LT H I M P L I C AT I O N S
(inactive) and thus not recognized by the hypothalamus-
with enzyme activity,13 thereby exacerbating a corti-
pituitary system, the pituitary continues to release
sol deficiency and initiating hormonal imbalances.
ACTH in order to stimulate more cortisol. The zona
■ Thyroid hormone impairment. Estrogen causes an
reticularis also responds to ACTH. This part of the adre-
increase in serum thyroxine-binding globulin, which
nal gland, as noted above, produces androgens that can
may slow the entry of thyroxine into cells and
convert to the estrogen compound estrone, or to testos-
thereby reduce thyroid hormone action in tissue.14
terone, which may then convert in part to the more
Elevated estrogen may also directly inhibit thyroid
glandular release.15 Cortisol appears to be involved in
Some researchers say that an interface or transition
the normal transference of T4 to T3, and the entry of
zone of tissue between the zona fasciculata and reticularis
T3 into cells.16 By interfering with cortisol synthesis,
of the adrenal cortex is capable of directly producing sex
estrogen may indirectly impair thyroid function.
hormones, including estrogen compounds.9, 10 Excess
These combined effects may slow the overall metab-
estrogen promotes CRF release from the hypothalamus
olism and interfere with many basic physiologic
and ACTH from the pituitary, and contributes to
hormonal imbalances and deleterious effects in the body.
■ Inflammation. My patients’ blood tests consistently
Researchers working in the field of rheumatoid arthri-
show an association between inflammatory condi-
tis and autoimmune rheumatic diseases believe that hor-
tions and the pattern of low cortisol, high estrogen,
mone balance is a crucial factor in the regulation of
and low antibody levels. Studies have shown that cor-
immune and inflammatory responses. Generally, estro-
tisol inhibits the production and accumulation of
gen in physiologic concentrations enhances humoral
excess histamine in tissue17 and the synthesis of
immune responses and depresses cellular-mediated
prostaglandins, mediators of the inflammatory
responses. At higher and pharmacological concentrations
the hormone has a number of inhibitory actions.
■ Cancer. In humans, estrogens are involved in the
Elevated estrogen, for instance, is associated with atrophy
development of breast and endometrial cancer.19 All
of the thymus gland. Androgens, by contrast, tend to
the dogs and cats I test and treat for cancer have
suppress both humoral and cellular types of mecha-
impaired cortisol and high estrogen, along with
nisms.11 An examination of the endocrinology literature
reveals, however, that mechanisms through which sex
■ Autoimmunity. The same abnormal hormonal pat-
hormones regulate immune and inflammatory responses
tern is found in pets with autoimmune conditions.
Immune cells are suppressed and appear to bestripped of normal regulation and the ability to dis-
POSSIBLE ROLES OF ADRENAL ESTROGEN
tinguish between host tissue and foreign matter.
I have developed an endocrine-immune blood test
Lahita has reported that recent data indicates
that measures cortisol, total estrogen, T3 and T4, and
“increased estrogen levels might initiate autoimmune
IgA, IgG, and IgM antibody levels. The measurement for
estrogen includes all estrogen compounds in the body,
■ Aggressive behavior. Many unpredictable and
that is estradiol, estrone, and estriol.
aggressive animals have the endocrine-immune
The test shows a consistent link between clinical
disturbance. In humans, Finkelstein provides
signs of various illnesses and total estrogen outside of a
evidence suggesting “that estrogen may play a
normal range. Intact female animals are not tested
significant role in the production of aggressive
during their estrus period. In out-of-estrus females, intact
males, and neutered pets, normal levels are as follows:
■ Males: 20-25 pg/ml■ Females: 30-35 pg/ml
TREATMENT
Elevated estrogen appears to contribute to a number
I initiate corrective therapy when testing indicates
the presence of imbalances. The protocol involves theuse of various cortisone medications, either standard
■ Cortisol impairment. Studies have shown that estro-
pharmaceutical compounds or a natural bio-identical
gen inhibits cortisol synthesis by specific interference
preparation made from an ultra extract of soy. All
C O R T I S O L A B N O R M A L I T Y, E L E VAT E D E S T R O G E N , A N D I M M U N E D E S TA B I L I Z AT I O N
plant material—the part of soy which increases body
ic conditions to an overall mechanism wherein an
estrogen levels—has been removed. The compound is
abnormality of cortisol triggers excess estrogen, HPA
administered at low, physiologic dosages sufficient to
destabilization, interference with thyroid, and deregula-
compensate for deficient cortisol and re-regulate the
tion of the immune system. I believe that this pattern of
immune system. These therapeutic dosages are signifi-
hormone-immune imbalance is a widespread but largely
cantly lower than standard pharmacologic levels used
unrecognized mechanism among pets, and may con-
for short-term treatment and are usually needed for the
This innovative use of a standard medication consis-
TESTING THE HYPOTHESIS IN HUMANS
tently restores lost immune competence. Most canine
The presence of such imbalances in humans could
conditions require additional T4 thyroid medication.
most readily be tested among symptomatic men and
For some species-specific reason, most affected felines
postmenopausal (non-ERT) women. First, a baseline
require only steroid replacement. This treatment
blood test would be taken to measure cortisol, total
approach has proven to be effective, safe, and free from
estrogen, T3/T4, and IgA, IgG, and IgM antibody lev-
els, along with a 24-hour urine test for active hormones
After two weeks of therapy, patients are retested.
and other relevant markers. The urine test permits the
There is usually a clear normalization of the key
clinician to compare results against the blood test. This
endocrine-immune markers along with parallel clinical
is an important evaluation because some blood values
improvements, indicating that a significant healing
(such as cortisol and thyroid) may appear normal in a
process is underway. In general, animals recover and
blood test but in fact involve excessively bound, inactive
maintain good health as long as the program is main-
hormone fractions. Blood tests alone may not indicate
tained. A supportive hypoallergenic diet eliminates the
whether or not the hormone is working. The urine test
risk of food reactions which can nullify the therapy.
helps answer this question and contributes to a more
This clinical experience demonstrates the potent reg-
accurate assessment and effective treatment.
ulatory influences of cortisol and estrogen in immune
Jefferies’ clinical experience with human patients
function. It shows, perhaps for the first time, how an
suggests that low-dosage cortisol replacement therapy
adrenal combination of abnormal cortisol and high
could be applied to symptomatic patients who are tested
estrogen interact to substantially deregulate and weaken
and found to have the endocrine-immune imbalances
immunity and contribute to multiple diseases.
described in this article. If their health status improves
For decades, William Jefferies, M.D., clinical pro-
and retesting shows a reduction in total estrogen, one
fessor emeritus at the University of Virginia School of
could conclude that a hypocortisol syndrome with wide
Medicine, has used low-dosage steroid replacement for
systemic impact has been clinically corrected. Such a
human patients with “adrenocortical deficiency” and
result would argue for further investigation of this
reported improvement for allergies, autoimmune disor-
testing and therapy method for various illnesses.
ders, and chronic fatigue.22 The medical community
Even though post-menopausal women are deficient
has largely ignored his clinical research because of an
in estradiol, their estriol and estrone are often very high
ingrained fear of using cortisone long-term under any
not only from the possible interface layer but because
circumstances. A similar fear exists in veterinary medi-
the tissue enzyme aromatase converts DHEA and
cine. At conventional pharmacologic dosages, cortisone
DHEAS and other androgens into total estrogen.
does indeed create side effects. In the past practitioners
Gruber states that estrogen synthesis increases in
often shuddered at any suggestion of long-term corti-
non-ovarian tissues as a function of age and body
sone, and, as the old saying goes, “threw the baby out
weight even though little is known about the factors
that regulate estrogen production in the post-
Recently, resistance to long-term physiologic doses
menopausal population.26 Longcope and colleagues
of cortisone appears to be eroding. Medical researchers
observed a “marked increase in the ratio of estrogens to
have reported successful applications of low-dosage cor-
androgens in acute illness” among postmenopausal
tisone in rheumatoid arthritis,23 polymyalgia rheumati-
women. Conditions included heart attack, unstable
ca—a systemic inflammatory disorder of the aged24 —
angina, respiratory illnesses, and congestive heart
and sepsis.25 However, none of these studies link specif-
failure.27 One physician with whom I have been
E N D O C R I N E - I M M U N E M E C H A N I S M S A N D H U M A N H E A LT H I M P L I C AT I O N S
communicating commented that his sickest post-
My male patients’ test results make a strong argu-
menopausal (non-ERT) patients have the highest total
ment for hypocortisolism as a primary cause of elevated
estrogen levels and the lowest immunoglobulins.28
estrogen. In symptomatic males with endocrine-
Estradiol alone, and not total estrogen, is current-
immune imbalances, high estrogen occurs almost exclu-
ly the standard measurement in patients, yet in post-
sively as a consequence of a cortisol abnormality. The
menopausal women, estrone is the major estrogen.29
rare exception is the animal whose endocrine-immune
Estriol, generally considered to be a weaker com-
status normalizes spontaneously without any treatment
pound than estradiol and estrone, is present in signif-
after moving to another area. I assume in such cases that
icantly greater concentration in premenopausal
a significant toxic or xenoestrogenic compound, perhaps
women,30 and may have significant though currently
ingested or inhaled, was present in one area and not in
unidentified biological activity. I believe that total
estrogen, including estrone and estriol, is a moremeaningful indicator of estrogen activity than estradi-
IMPLICATIONS FOR HUMANS
Elevated estrogen participates in a broad syndrome of
The presence of xenoestrogens and phytoestrogens,
hormonal-immune imbalances contributing to multiple
chemicals which mimic estrogen and which can
diseases in animals. Is estrogen similarly involved in
potentially trigger androgen-estrogen imbalance, com-
plicate the process of assessing serum estrogen status.
Is an unsuspected excess of estrogen involved in
Such compounds appear in the environment and in
AIDS? Veterinarians regard diseased cats infected with
food. Ubiquitous estrogenic compounds, including
feline immunodeficiency virus (FIV), a retrovirus
industrial chemicals, pesticides, and surfactants, affect
similar to HIV, as untreatable. Yet I have a 70 percent
wildlife and laboratory animals’ immune systems.
recovery rate among symptomatic FIV patients. These
Further studies are needed to determine the immune
animals have a typical pattern of low cortisol, high
response in humans. These compounds may affect
estrogen, and disturbed immune function. Low-dosage
humans in similar ways.31 Hence, the need to measure
steroid therapy corrects the underlying imbalances and
restores natural immunity. Cats remain disease-free as
Mesiano, demonstrated in 1999 that dietary phytoe-
long as they are kept on the therapy. The results raise a
strogen compounds found in soy decrease cortisol pro-
duction and, as a result, increase androgens. Such con-
Does the virus cause the disease or do the imbalances
sumption, he suggests, may indirectly increase total
weaken the immune system and give the virus free rein?
estrogen by raising DHEA and DHEAS levels. In his
Do the imbalances also accelerate the disease process by
opinion it is “possible that some of the estrogenic actions
deregulating the immune system so that immune cells
of dietary phytoestrogens may be mediated via their
attack both viruses and host tissue? Is it not possible that
stimulation of adrenal androgen synthesis.”32
in humans cortisol-estrogen-immune status may dictate
One way to determine the influence of dietary phy-
whether a person develops AIDS symptoms after being
toestrogens, at least in men and postmenopausal
exposed to the HIV virus? My clinical experience with
women, would be to eliminate soy from the diet of
animals suggests that HIV-positive humans be tested for
patients who test high in total estrogen, then retest the
endocrine-immune imbalances. If present, appropriate
patient again after several weeks. A clear drop in estro-
hormone replacement might offer a significant preven-
gen level could indicate a dietary effect. An unchanged
or insignificantly changed level would indicate a source
All of my cancer patients have the same general
pattern of endocrine-immune disturbance. Based on
Xenoestrogens include birth control pills and chemi-
this experience I would suggest that human cancer
calized estrogen drugs. Can these contribute to a distur-
patients be tested for similar imbalances. If they exist,
bance of cortisol and thyroid, and contribute to the dis-
appropriate hormone replacement therapy might
ease process? It seems plausible that exogenous estrogen,
offer an effective treatment strategy for humans just
or even androgen supplements (such as DHEA, which
as it does for animals, even in advanced cases.
can convert to estrogen in the body) could indeed con-
According to Gunin estrogen generates pro-
inflammatory responses as well as proliferative
C O R T I S O L A B N O R M A L I T Y, E L E VAT E D E S T R O G E N , A N D I M M U N E D E S TA B I L I Z AT I O N
changes associated with a pre-cancerous process in
My clinical success and the growing clinical applica-
the uterus. Treatment with cortisone (dexametha-
tions of low-dosage cortisone therapy for humans
sone) in ovariectomized rats given estradiol reverses
strongly argue for sustained research into the nature,
magnitude, and impact of cortisol defects, including an
I routinely find the combination of abnormal corti-
associated estrogen-immune problem, in the etiology of
sol and elevated estrogen in animals with histories of
disease. While it is now recognized that the hypothala-
infertility and miscarriage, suggesting that reproductive
mic-pituitary-adrenal axis, as part of the neuroen-
failures may be caused by inflamed and immune-dereg-
docrine system, has central importance to immune
ulated reproductive tract tissue. Such failures are rou-
homeostasis,35 we still don’t understand the countless
tinely corrected by proper hormone therapy, enabling
animals to conceive and produce healthy offspring.
Estrogen measurements are generally assumed to
Over decades of clinical experience, William Jefferies,
be expressions of ovarian function. This seems an
an emeritus clinical professor at the University of
invalid assumption, since a deficit of active cortisol—
Virginia, has reported that patients with cortisol insuf-
from genetics, stress, toxicity, or phytoestrogens—can
ficiency and histories of ovarian dysfunction, infertility,
initiate a significant estrogen buildup—estrogen
and failed pregnancies achieve significantly improved
dominance—independent of the ovaries. Estrogen
conception and birth rates on low-dosage cortisone
dominance not only causes inflammation of many of
the arteries, but it also binds active cortisol and active
thyroid, and deregulates the immune system. It can
appears to be a grossly underdiagnosed enabling mech-
also contribute to such ailments as cancer, autoim-
anism for a multiplicity of disorders in humans just as it
munity, and hypersensitivity diseases. It will con-
is in animals, giving rise to chronic infections, autoim-
tribute to loss of homeostasis, deregulated immune
mune conditions, an increased risk of cancer, and poor
function, and increased risk of disease among females
response to immunization. In both humans and ani-
with or without ovaries as well as neutered or intact
mals, CVID is characterized by low IgA, IgG, and IgM
levels and abnormal T cell counts. In humans, the pre-
In humans, routine testing for a cortisol deficit and
cise trigger for such immune dysfunction is unknown.
consequential hormonal-immune abnormalities, fol-
Researchers have not linked CVID or other so-called
lowed by an appropriate low-dosage, remedial steroid
immunodeficiency mechanisms to hormones. I suggest
therapy program, may provide breakthrough strategies
that exploring this connection, and looking specifically
in the perpetual battle against disease.
at cortisol activity, may generate major clues for diag-nosis and treatment.
E N D O C R I N E - I M M U N E M E C H A N I S M S A N D H U M A N H E A LT H I M P L I C AT I O N S
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TRATAMIENTO DE LA HIPERTENSION PULMONAR PRIMARIA: Ramón Nicasio Herrera1, Julio Argentino Miotti2, Héctor Lucas Luciardi3, Silvia Graciela Ragone4 La hipertensión pulmonar primaria (HPP) es una Actividad física y estilo de vida: El ejercicio enfermedad infrecuente, progresiva y fatal, para lapuede agravar los síntomas de los pacientes concual pocas terapéuticas son efectivas