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NDA 21-443

Package Insert

ENJUVIA™

(synthetic conjugated estrogens, B) Tablets

R

only

x

ESTROGENS INCREASE THE RISK OF ENDOMETRIAL CANCER

Close clinical surveillance of all women taking estrogens is important. Adequate diagnostic measures, including endometrial sampling when indicated, should be undertaken to rule out malignancy in all cases of undiagnosed persistent or recurring abnormal vaginal bleeding. There is no evidence that the use of “natural” estrogens results in a different endometrial risk profile than synthetic estrogens at equivalent estrogen doses.

(See WARNINGS, Malignant neoplasms, Endometrial cancer.)
CARDIOVASCULAR AND OTHER RISKS

Estrogens with or without progestins should not be used for the prevention of cardiovascular

disease. (See WARNINGS, Cardiovascular disorders.)

The Women’s Health Initiative (WHI) study reported increased risks of myocardial infarction, stroke, invasive breast cancer, pulmonary emboli, and deep vein thrombosis in postmenopausal women (50 to 79 years of age) during 5 years of treatment with oral conjugated estrogens (CE 0.625 mg) combined with medroxyprogesterone acetate (MPA 2.5 mg) relative to placebo. (See

CLINICAL PHARMACOLOGY, Clinical Studies).

The Women’s Health Initiative Memory Study (WHIMS), a substudy of WHI, reported increased risk of developing probable dementia in postmenopausal women 65 years of age or older during 4 years of treatment with oral conjugated estrogens plus medroxyprogesterone acetate relative to placebo. It is unknown whether this finding applies to younger postmenopausal women or to

women taking estrogen alone therapy. (See CLINICAL PHARMACOLOGY, Clinical Studies.)

Other doses of oral conjugated estrogens with medroxyprogesterone acetate, and other combinations and dosage forms of estrogens and progestins were not studied in the WHI clinical trials and, in the absence of comparable data, these risks should be assumed to be similar. Because of these risks, estrogens with or without progestins should be prescribed at the lowest effective doses and for the shortest duration consistent with treatment goals and risks for the individual woman.

DESCRIPTION

ENJUVIA (synthetic conjugated estrogens, B) tablets contain a blend of ten (10) synthetic estrogenic substances. The estrogenic substances are: sodium estrone sulfate, sodium equilin sulfate, sodium 17α- NDA 21-443 Page 4

dihydroequilin sulfate, sodium 17α-estradiol sulfate, sodium 17β-dihydroequilin sulfate, sodium 17α- dihydroequilenin sulfate, sodium 17β-dihydroequilenin sulfate, sodium equilenin sulfate, sodium 17β- estradiol sulfate, and sodium ∆8,9-dehydroestrone sulfate.

The structural formulae for these estrogens are: NDA 21-443 Page 5

ENJUVIA tablets for oral administration are available in 0.625 mg and 1.25 mg strengths of synthetic conjugated estrogens, B. These tablets contain the following inactive ingredients: ascorbyl palmitate, butylated hydroxyanisole, colloidal silicon dioxide, edetate disodium dehydrate, plasticized ethylcellulose, hypromellose, lactose monohydrate, magnesium stearate, purified water, iron oxide red, titanium dioxide, polyethylene glycol, polysorbate 80, triacetate and triacetin/glycerol. In addition, the 1.25 mg tablets also contains iron oxide yellow.

CLINICAL PHARMACOLOGY

Endogenous estrogens are largely responsible for the development and maintenance of the female reproductive system and secondary sexual characteristics. Although circulating estrogens exist in a dynamic equilibrium of metabolic interconversions, estradiol is the principal intracellular human estrogen and is substantially more potent than its metabolites, estrone and estriol, at the receptor level.

The primary source of estrogen in normally cycling adult women is the ovarian follicle, which secretes 70 to 500 mcg of estradiol daily, depending on the phase of the menstrual cycle. After menopause, most endogenous estrogen is produced by conversion of androstenedione, secreted by the adrenal cortex, to estrone by peripheral tissues. Thus, estrone and the sulfate-conjugated form, estrone sulfate, are the most abundant circulating estrogens in postmenopausal women.

Estrogens act through binding to nuclear receptors in estrogen-responsive tissues. To date, two estrogen receptors have been identified. These vary in proportion from tissue to tissue.

Circulating estrogens modulate the pituitary secretion of the gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone (FSH), through a negative feedback mechanism. Estrogens act to reduce the elevated levels of these hormones in postmenopausal women.

Pharmacokinetics

Absorption

Synthetic conjugated estrogens, B are soluble in water and are well absorbed from the gastrointestinal tract after release from the drug formulation. ENJUVIA tablets release synthetic conjugated estrogens, B slowly over a period of several hours. Table 1 and Table 2 summarize the mean pharmacokinetic parameters for unconjugated (free) and conjugated (total) estrogens following single administration of two 0.625 mg tablets to 21 healthy postmenopausal women under fasting conditions. The effect of food on the bioavailability of synthetic conjugated estrogens, B following administration of ENJUVIA NDA 21-443 Page 6

tablets has not been studied. However, the presence of food did not significantly affect the pharmacokinetics of a similar formulation of synthetic conjugated estrogens, B.

Table 1. Mean Pharmacokinetic Parameters of Unconjugated Estrogens
Following a Single Dose of 2 x 0.625 mg ENJUVIA Tablets Under Fasting Conditions*

  • Cmax
  • tmax
  • t1/2
  • AUC0-48h

(pg•hr/mL)

1601.59
(41)

(pg/mL) (hr) (hr)

75.87
(39)
41.94
(49)
Baseline-corrected estrone (free) (% CV) Equilin (free)
9.29 23.46 (25) (59) 8.38 15.09 (27) (55)
707.21

  • (46)
  • (% CV)

Cmax = peak plasma concentration; tmax = time peak concentration occurs; t1/2 = apparent terminal-phase disposition half-life; AUC0-48h = total area under the concentration-time curve from time zero to time of last quantifiable concentration (48h); * ∆8,9 Dihydroestrone (free) levels were below the assay limit of quantitation; CV= Coefficient of Variance

Table 2. Mean Pharmacokinetic Parameters of Conjugated Estrogens
Following a Single Dose of 2 x 0.625 mg ENJUVIA Tablets Under Fasting Conditions

Cmax

(ng/mL) (h)

3.74 (29)

  • tmax
  • t1/2

(h)

AUC0-48h

(ng•h/mL)

  • 62.03
  • Baseline-corrected

estrone (total) (% CV)
8.00 14.26

  • ((27) (26)
  • (34)

Equilin (total) (% CV)
3.69 (44) 0.74 (32)
8.05 11.28 (36) (28) 7.55 14.14 (37) (26)
58.25
(53)
12.93
(39)
∆8,9 Dehydroestrone (total) (%CV)

Cmax = peak plasma concentration; tmax = time peak concentration occurs; t1/2 = apparent terminal-phase disposition half-life; AUC0-48h = total area under the concentration-time curve from time zero to time of last quantifiable concentration (48h); CV= Coefficient of Variance

Distribution

The distribution of exogenous estrogens is similar to that of endogenous estrogens. Estrogens are widely distributed in the body and are generally found in higher concentrations in the sex hormone target organs. Estrogens circulate in the blood largely bound to sex hormone binding globulin (SHBG) and albumin.

Metabolism

Exogenous estrogens are metabolized in the same manner as endogenous estrogens. Circulating estrogens exist in a dynamic equilibrium of metabolic interconversions. These transformations take place mainly in the liver. Estradiol is converted reversibly to estrone, and both can be converted to estriol, which is the major urinary metabolite. Estrogens also undergo enterohepatic recirculation via sulfate and glucuronide conjugation in the liver, biliary secretion of conjugates into the intestine, and hydrolysis in the gut followed by reabsorption. In postmenopausal women, a significant portion of the circulating estrogens exist as sulfate conjugates, especially estrone sulfate, which serves as a circulating reservoir for the formation of more active estrogens. NDA 21-443 Page 7

Excretion

Estradiol, estrone, and estriol are excreted in the urine along with glucuronide and sulfate conjugates. The mean (SD) apparent terminal elimination half-life (t ) of conjugated estrone is 14 (± 6) hours and

½

conjugated equilin is 11 (± 6) hours.

Special Populations

No pharmacokinetic studies were conducted in special populations, including patients with renal or hepatic impairment.

Drug Interactions

In vitro and in vivo studies have shown that estrogens are metabolized partially by cytochrome P450 3A4 (CYP3A4). Therefore, inducers or inhibitors of CYP3A4 may affect estrogen drug metabolism. Inducers of CYP3A4 such as St. John’s Wort preparations (Hypericum perforatum), phenobarbital, carbamazepine, and rifampin may reduce plasma concentrations of estrogens, possibly resulting in a decrease in therapeutic effects and/or changes in the uterine bleeding profile. Inhibitors of CYP3A4 such as erythromycin, clarithromycin, ketoconazole, itraconazole, ritonavir, and grapefruit juice may increase plasma concentrations of estrogens and may result in side effects.

Clinical Studies

Effects on vasomotor symptoms

A randomized, double-blind, placebo-controlled, dose-ranging, multi-center clinical study was conducted to evaluate the safety and effectiveness of ENJUVIA tablets for the treatment of vasomotor symptoms in 281 naturally or surgically postmenopausal women aged 26 to 65 years who were experiencing a minimum of seven moderate to severe hot flushes per day or 50 per week at randomization. The majority (81%) of patients were Caucasian (n=228) and 49 patients (17.4%) were Black. Patients were randomized to receive ENJUVIA tablets 0.625 mg, 1.25 mg, or placebo once daily for 12 weeks. At the end of the 12-week treatment period, each patient with a uterus was administered oral medroxyprogesterone acetate (MPA) once daily for 14 days.

ENJUVIA (0.625 mg and 1.25 mg tablets) was shown to be statistically better than placebo at weeks 4 and 12 for relief of both the frequency and severity of moderate to severe vasomotor symptoms (Table 3 and 4).

Table 3. Mean Change in Number of Moderate to Severe Hot Flushes
Per Week ITT Population with LOCF

NDA 21-443 Page 8

0.625 mg n=71
1.25 mg n=69
Placebo n=70
Baseline

Mean (SD)

Week 4

Mean (SD)

  • 97.3 (82.1)
  • 86.8 (42.1)
  • 96.4 (58.2)

23.3 (26.9) -72.8 (5.0)
24.6 (47.0) -68.3 (5.1)
57.8 (47.5)

  • -37.2 (5.0)
  • Mean Change from

Baseline (SE)

  • p-value versus placebo
  • <0.001
  • <0.001
  • ---

Week 8

Mean (SD) Mean Change from Baseline (SE)
13.0 (17.8) -83.0 (4.4)
13.8 (27.3) -80.2 (4.5)
49.5 (47.9) -45.9 (4.5)

Week 12

Mean (SD) Mean Change from Baseline (SE)
12.2 (18.7) -84.6 (4.4)
12.4 (26.3) -82.6 (4.5)
47.5 (49.8) -48.3 (4.5)

  • p-value versus placebo
  • <0.001
  • <0.001
  • ---

ITT= Intent to treat; LOCF= Last Observation Carried Forward: SD= Standard Deviation; SE= Standard Error

NDA 21-443 Page 9

Table 4. Mean Change in Severity of Moderate to Severe Hot Flushes
Per Week, ITT Population with LOCF

0.625 mg n=71
1.25 mg n=69
Placebo n=70
Baseline

Mean (SD)

Week 4

Mean (SD)

  • 2.4 (0.3)
  • 2.4 (0.4)
  • 2.4 (0.4)

1.7 (0.9) -0.7 (0.1)
1.4 (1.0) -1.0 (0.1)
2.1 (0.8)

  • -0.3 (0.1)
  • Mean Change from

Baseline (SE)

  • p-value versus placebo
  • 0.009
  • <0.001
  • ---

Week 8

Mean (SD) Mean Change from Baseline (SE)
1.4 (1.0) -1.0 (0.1)
1.0 (0.1) -1.4 (0.1)
1.9 (0.9) -0.5 (0.1)

Week 12

Mean (SD) Mean Change from Baseline (SE)
1.1 (1.10 -1.3 (0.1)
1.0 (1.0) -1.4 (0.1)
1.9 (0.9) -0.5 (0.1)

  • p-value versus placebo
  • <0.001
  • <0.001
  • ---

ITT= Intent to treat; LOCF= Last Observation Carried Forward: SD= Standard Deviation; SE= Standard Error

Women’s Health Initiative Studies

The Women’s Health Initiative (WHI) enrolled a total of 27,000 predominantly healthy postmenopausal women to assess the risks and benefits of either the use of 0.625 mg conjugated equine estrogens (CE) per day alone or the use of 0.625 mg conjugated equine estrogens plus 2.5 mg medroxyprogesterone acetate (MPA) per day compared to placebo in the prevention of certain chronic diseases. The primary endpoint was the incidence of coronary heart disease (CHD) (nonfatal myocardial infarction and CHD death), with invasive breast cancer as the primary adverse outcome studied. A “global index” included the earliest occurrence of CHD, invasive breast cancer, stroke, pulmonary embolism (PE), endometrial cancer, colorectal cancer, hip fracture, or death due to other cause. The study did not evaluate the effects of CE or CE/MPA on menopausal symptoms.

The CE/MPA substudy was stopped early because, according to the predefined stopping rule, the increased risk of breast cancer and cardiovascular events exceeded the specified benefits included in the “global index.” Results of the CE/MPA substudy, which included 16,608 women (average age of 63 years, range 50 to 79; 83.9% White, 6.5% Black, and 5.5% Hispanic), after an average follow-up of 5.2 years are presented in Table 5 below. NDA 21-443 Page 10

Table 5. Relative and Absolute Risk Seen in the CE/MPA Substudy of WHIa

  • Eventc
  • Relative Risk

CE/MPA vs. Placebo at 5.2 Years
Placebo n = 8102
CE/MPA n = 8506

Absolute risk per 10,000 person-years
(95% CI*)

  • CHD events
  • 1.29 (1.02-1.63)

1.32 (1.02-1.72) 1.18 (0.70-1.97)

1.26 (1.00-1.59) 1.41 (1.07-1.85) 2.13 (1.39-3.25) 0.63 (0.43-0.92) 0.83 (0.47-1.47) 0.66 (0.45-0.98) 0.92 (0.74-1.14)
30

23
6

30 21
8
16
6
15 40
37

30
7

38 29 16 10
5

Non-fatal MI CHD death

Invasive breast cancerb Stroke Pulmonary embolism Colorectal cancer Endometrial cancer Hip fracture Death due to causes other than the events above Global Indexc
10 37

  • 1.15 (1.03-1.28)
  • 151
  • 170

Deep vein thrombosisd Vertebral fracturesd
2.07 (1.49-2.87) 0.66 (0.44-0.98) 0.77 (0.69-0.86)
13 15
170
26
9

  • 131
  • Other osteoporotic fracturesd

a adapted from JAMA, 2002; 288:321-333 b includes metastatic and non-metastatic breast cancer with the exception of in situ breast cancer c a subset of the events was combined in a “global index”, defined as the earliest occurrence of CHD events, invasive breast cancer, stroke, pulmonary embolism, endometrial cancer, colorectal cancer, hip fracture, or death due to other causes d not included in Global Index * nominal confidence intervals unadjusted for multiple looks and multiple comparisons

For those outcomes included in the “global index,” absolute excess risks per 10,000 person-years in the group treated with CE/MPA were 7 more CHD events, 8 more strokes, 8 more PEs, and 8 more invasive breast cancers, while absolute risk reductions per 10,000 person-years were 6 fewer colorectal cancers and 5 fewer hip fractures. The absolute excess risk of events included in the “global index” was 19 per 10,000 person-years. There was no difference between the groups in terms of all-cause

mortality. (See BOXED WARNINGS, WARNINGS, and PRECAUTIONS.) Women’s Health Initiative Memory Study

The Women’s Health Initiative Memory Study (WHIMS), a substudy of WHI, enrolled 4,532 predominantly postmenopausal women 65 years of age and older (47% were age 65 to 69 years, 35% were 70 to 74 years, and 18% were 75 years of age and older) to evaluate the effects of CE/MPA (0.625 mg conjugated estrogens plus 2.5 mg medroxyprogesterone acetate) on the incidence of probable dementia (primary outcome) compared with placebo.

After an average follow-up of 4 years, 40 women in the estrogen/progestin group (45 per 10, 000 women-years) and 21 in the placebo group (22 per 10,000 women-years) were diagnosed with probable dementia. The relative risk of probable dementia in the hormone therapy group was 2.05 (95% CI, 1.21 to 3.48) compared to placebo. Differences between groups became apparent in the first NDA 21-443 Page 11

year of treatment. It is unknown whether these findings apply to younger postmenopausal women. (See

BOXED WARNINGS and WARNINGS, Dementia.) INDICATIONS AND USAGE

ENJUVIA tablets are indicated for the treatment of moderate to severe vasomotor symptoms associated with the menopause.

CONTRAINDICATIONS

ENJUVIA tablets should not be used in individuals with any of the following conditions: 1. Undiagnosed abnormal genital bleeding. 2. Known, suspected, or history of cancer of the breast. 3. Known or suspected estrogen-dependent neoplasia. 4. Active deep vein thrombosis, pulmonary embolism or a history of these conditions. 5. Active or recent (e.g., within the past year) arterial thromboembolic disease (e.g., stroke, myocardial infarction).
6. Liver dysfunction or disease. 7. ENJUVIA tablets should not be used in patients with known hypersensitivity to its ingredients. 8. Known or suspected pregnancy. There is no indication for ENJUVIA in pregnancy. There appears to be little or no increased risk of birth defects in children born to women who have used estrogens and progestins from oral contraceptives inadvertently during early pregnancy. (See

PRECAUTIONS.)
WARNINGS See BOXED WARNINGS.

The use of unopposed estrogens in a woman who has a uterus is associated with an increased risk of endometrial cancer.

1. Cardiovascular disorders.

Estrogen and estrogen/progestin therapy has been associated with an increased risk of cardiovascular events such as myocardial infarction and stroke, as well as venous thrombosis and pulmonary embolism (venous thromboembolism or VTE). Should any of these occur or be suspected, estrogens should be discontinued immediately.

Risk factors for arterial vascular disease (e.g., hypertension, diabetes mellitus, tobacco use, hypercholesterolemia, and obesity) and/or venous thromboembolism (e.g., personal history or family history of VTE, obesity, and systemic lupus erythematosus) should be managed appropriately.

a. Coronary heart disease and stroke.

In the Women’s Health Initiative (WHI) study, an increase in the number of myocardial infarctions and strokes has been observed in women receiving CE compared to placebo. These

observations are preliminary. (See CLINICAL PHARMACOLOGY, Clinical Studies.)

In the CE/MPA substudy of WHI, an increased risk of coronary heart disease (CHD) events (defined as nonfatal myocardial infarction and CHD death) was observed in women receiving
NDA 21-443 Page 12

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  • Pharmacology of Estrogens and Progestogens: Influence of Different Routes of Administration

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    CLIMACTERIC 2005;8(Suppl 1):3–63 Pharmacology of estrogens and progestogens: influence of different routes of administration H. Kuhl Department of Obstetrics and Gynecology, J. W. Goethe University of Frankfurt, Germany Key words: ESTROGENS, PROGESTOGENS, PHARMACOKINETICS, PHARMACODYNAMICS, HORMONE REPLACEMENT THERAPY ABSTRACT This review comprises the pharmacokinetics and pharmacodynamics of natural and synthetic estrogens and progestogens used in contraception and therapy, with special consideration of hormone replacement therapy. The paper describes the mechanisms of action, the relation between structure and hormonal activity, differences in hormonal pattern and potency, peculiarities in the properties of certain steroids, tissue-specific effects, and the metabolism of the available estrogens and progestogens. The influence of the route of administration on pharmacokinetics, hormonal activity and metabolism is presented, and the effects of oral and transdermal treatment with estrogens on tissues, clinical and serum parameters are compared. The effects of oral, transdermal (patch and gel), intranasal, sublingual, buccal, vaginal, subcutaneous and intramuscular adminis- tration of estrogens, as well as of oral, vaginal, transdermal, intranasal, buccal, intramuscular and intrauterine application of progestogens are discussed. The various types of progestogens, their receptor interaction, hormonal pattern and the hormonal activity of certain metabolites are described in detail. The structural formulae, serum concentrations, binding affinities to steroid receptors and serum binding globulins, and the relative potencies of the available estrogens and progestins are presented. Differences in the tissue-specific effects of the various compounds and regimens and their potential implications with the risks and benefits of hormone replacement therapy are discussed. INTRODUCTION The aim of any hormonal treatment of postmen- tance of pharmacological knowledge for an opausal women is not to restore the physiological optimal use of hormone therapy.
  • Other Data Relevant to an Evaluation of Carcinogenicity and Its Mechanisms

    Other Data Relevant to an Evaluation of Carcinogenicity and Its Mechanisms

    COMBINED ESTROGEN−PROTESTOGEN MENOPAUSAL THERAPY 263 4. Other Data Relevant to an Evaluation of Carcinogenicity and its Mechanisms 4.1 Absorption, distribution, metabolism and excretion The distribution of progestogens is described in the monograph on Combined estro- gen–progestogen contraceptives. That of estrogens is described below. 4.1.1 Humans Little more has been discovered about the absorption and distribution of estrone, estradiol and estriol products and conjugated equine estrogens in humans since the previous evaluation (IARC, 1999). Greater progress has been made in the identification and characterization of the enzymes that are involved in estrogen metabolism and excre- tion. The various metabolites and the responsible enzymes, including genotypic varia- tions, are described below (see Figures 3 and 4). Sulfation and glucuronidation are the main metabolic reactions of estrogens in humans. (a) Metabolites (i) Estrogen sulfates Several members of the sulfotransferase (SULT) gene family can sulfate hydroxy- steroids, including estrogens. The importance of SULTs in estrogen conjugation is demons- trated by the observation that a major component of circulating estrogen is sulfated, i.e. estrone sulfate (reviewed by Pasqualini, 2004). In addition to the parent hormones, estrone and estradiol, SULTs can also conjugate their respective catechols and also methoxyestro- gens (Spink et al., 2000; Adjei & Weinshilboum, 2002). The resulting sulfated metabolites are more hydrophilic and can be excreted. In postmenopausal breast cancers, levels of estrone sulfate can reach 3.3 ± 1.9 pmol/g tissue, which is five to nine times higher than the corresponding plasma concentration (equating gram of tissue with millilitre of plasma) (Pasqualini et al., 1996). In contrast, levels of estrone sulfate in premenopausal breast tumours are two to four times lower than those in plasma.
  • Cenestin™ (Synthetic Conjugated Estrogens, A) Tablets Physicians Package Insert

    Cenestin™ (Synthetic Conjugated Estrogens, A) Tablets Physicians Package Insert

    NDA 20-992 Cenestin™ (synthetic conjugated estrogens, A) Tablets Physicians Package Insert Cenestin™ (synthetic conjugated estrogens, A) Tablets ] only PRESCRIBING INFORMATION ESTROGENS INCREASE THE RISK OF ENDOMETRIAL CARCINOMA. Close clinical surveillance of all women taking estrogens is important. Adequate diagnostic measures, including endometrial sampling when indicated, should be undertaken to rule out malignancy in all cases of undiagnosed persistent or recurring abnormal vaginal bleeding. There is no evidence that natural estrogens are more or less hazardous than synthetic estrogens at equivalent estrogen doses. DESCRIPTION Synthetic conjugated estrogens, A tablets contain a blend of nine (9) synthetic estrogenic substances. The estrogenic substances are sodium estrone sulfate, sodium equilin sulfate, sodium 17α-dihydroequilin sulfate, sodium 17α-estradiol sulfate, sodium 17β-dihydroequilin sulfate, sodium 17α-dihydroequilenin sulfate, sodium 17β-dihydroequilenin sulfate, sodium equilenin sulfate and sodium 17β-estradiol sulfate. The structural formulae for these estrogens are: Page: 1 Date printed: Mar 23, 1999 NDA 20-992 Cenestin™ (synthetic conjugated estrogens, A) Tablets Physicians Package Insert O O NaO SO 3 C H NaO S NaO SO 18 21 5 3 C H NaO S 372.42 18 19 5 370.41 Sodium Estrone Sulfate Sodium Equilin Sulfate OH OH NaO SO NaO SO 3 C H NaO S 3 18 21 5 C18H21NaO5S 372.42 372.42 Sodium Dihydroequilin Sulfate 6RGLXPÃ 'LK\GURHTXLOLQÃ6XOIDWH OH OH NaO SO NaO SO 3 3 C H NaO S C18H23NaO5S 18 23 5 374.44 374.44 6RGLXPÃ (VWUDGLROÃ6XOIDWH 6RGLXPÃ (VWUDGLROÃ6XOIDWH O OH NaO3SO NaO3SO C18H17NaO5S C18H19NaO5S 368.39 370.41 Sodium Equilenin Sulfate 6RGLXPÃ 'LK\GURHTXLOHQLQÃ6XOIDWH OH NaO3SO C18H19NaO5S 370.41 6RGLXPÃ 'LK\GURHTXLOHQLQÃ6XOIDWH Tablets for oral administration, are available in 0.625 mg and 0.9 mg strengths of synthetic conjugated estrogens.

  • Additional Menopause Learning Issues And

    Drs DeRuiter, Braxton-Lloyd and Breese, Endocrine Module, Spring 2002 MENOPAUSE/CONTRACEPTION/DUB SECTIONS: “BASIC SCIENCE” LEARNING OBJECTIVES • Describe the structure and function of the female reproductive system • Describe how peptide hormones of the hypothalamus and pituitary regulate reproductive system structure and function • Describe how steroid hormones regulate reproductive system differentiation, structure and function • Describe the production of steroid hormones in the ovarian substructures and how steroid hormone production is regulated by hypothalamic and pituitary peptide hormones. Note the key biosynthetic steps and precursors, and how genetics, disease and drugs may influence biosynthetic processes. • Characterize variations in hypothalamic and pituitary hormone levels and steroid hormone levels during maturation, puberty, pregnancy, the climacteric phase and menopause. • Generally describe how genetic defects or reproductive tissue pathologies may influence contribute to menstrual disorders/menopause • Describe the biochemical events involved in estrogen receptor stimulation and expression of estrogenic activity. Describe the different estrogen receptor subtypes and their tissue localization. • Generally describe the modulatory roles of the estrogenic hormones in skin and skeletal tissue, cardiovascular pathology, CNS function, the gut and other estrogen- dependent tissues (breast) • Describe the causes, clinical presentation, laboratory assessment of various reproductive tract disorders. • Describe the consequences of estrogen deficiency on the organ systems of the body • Describe the relationship between reproductive tract disorders and common comorbid conditions that develop • Describe the various structural sub-classes of estrogenic hormone drugs and how structure influences pharmacologic activity, key pharmacokinetic properties and adverse reaction profiles. Describe the rationale for differences in properties based on structure. • Describe the different formulations for the various structural sub-classes of steroid hormone drugs.
  • Dehydroepiandrosterone Sulfotransferase As a Possible Shunt for the Control of Steroid Metabolism in Human Mammary Carcinoma1

    Dehydroepiandrosterone Sulfotransferase As a Possible Shunt for the Control of Steroid Metabolism in Human Mammary Carcinoma1

    [CANCER RESEARCH 37, 278-284, January 1977] Dehydroepiandrosterone Sulfotransferase as a Possible Shunt for the Control of Steroid Metabolism in Human Mammary Carcinoma1 J_ B. Adams2 and D. P. Chandra2 ImperialCancerResearchFund,Lincoln's Inn Fields,London,England(J. B. A.), and the Schoolof Biochemistry,Universityof NewSouth Wales, Kensington,AustraliafJ. B. A., D. P. C.) SUMMARY noid moiety can occur with the sulfate group intact, but such pathways appear to be of minor significance (21). Human primary mammary tumors were examined to de Oao and Libby (15, 16) have demonstrated that the sulfur termine what factors were of importance in deciding relative ylation of steroids by human mammary carcinoma tissue is rates of sulfurylation of dehydroepiandrostenone and 17$- highly correlated with prognosis and response to hormone estradiol, such rates having been shown to correlate with ablative procedures such as adnenalectomy. In patients un the patient's prognosis and response to adrenalectomy (T. dengoing adnenalectomy for late-stage breast cancer, the L. Oao and P. A. Libby. Enzymic Synthesis of Steroid Sul failure of tumor preparations to sulfurylate steroid hon fate by Mammary Cancer and Its Clinical Implications. NatI. mones in vitro was related to a particularly grave prognosis Cancer Inst. Monographs, 34: 205-210, 1971). The sulfur and a complete lack of response to adrenalectomy. When ylation of dehydroepiandrosterone and 17f3-estradiol was DHEA3 and 17f3-estradiol were compared as substrates for studied in 41 tumors in vitro using tumor cytosol, adenosine tumor sulfotransferases, then if the ratio of DHEA sulfate tniphosphate, [35S]SO42, Mg2@,and added steroid. Six tu formation to 17f3-estnadiol sulfate formation was <1, this mors showed no sulfurylating ability, 9 sulfurylated dehy was also associated with a poor prognosis and response to droepiandrosterone at a rate greater than that for 17$- adrenalectomy.
  • International 2017 2 Table of Contents

    International 2017 2 Table of Contents

    Deuterium Labelled Compounds International 2017 2 Table of Contents International Distributors 3 Corporate Overview 4 General Information 5 Quality Control 5 Custom Synthesis 5 Chemical Abstract Service Numbers 5 Handling Hazardous Compounds 5 Our Products are Not Intended for Use in Humans 6 Limited Warranty 6 Packaging Information 6 Alphabetical Listings 7 Stock Clearance 235 Products by Category 241 n-Alkanes 242 α-Amino Acids, N-Acyl α-Amino Acids, N-t-BOC Protected α-Amino Acids 242 and N-FMOC Protected α-Amino Acids Buffers and Reagents for NMR Studies 244 Detergents 244 Environmental Standards 245 Fatty Acids and Fatty Acid Esters 248 Flavours and Fragrances 249 Gases 252 Medical Research Products 253 Nucleic Acid Bases and Nucleosides 254 Pesticides and Pesticide Metabolites 255 Pharmaceutical Standards 256 Polyaromatic Hydrocarbons (PAHs), Alkyl-PAHs, Amino-PAHs, 259 Hydroxy-PAHs and Nitro-PAHs Polychlorinated Biphenyls (PCBs) 259 Spin Labels 260 Steroids 260 3 International Distributors C Beijng Zhenxiang H EQ Laboratories GmbH Australia K Technology Company Graf-von-Seyssel-Str. 10 Rm. 15A01, Changyin Bld. 86199 Augsburg Austria H No. 88, YongDingLu Rd. Germany Beijing 100039 Tel.: (49) 821 71058246 Belgium J China Fax: (49) 821 71058247 Tel.: (86) 10-58896805 [email protected] China C Fax: (86) 10-58896158 www.eqlabs.de Czech Republic H [email protected] Germany, Austria, China Czech Republic, Greece, Denmark I Hungary, Poland, Switzerland D Central Chemicals Co., Inc. Estonia I Ishida Bldg., 4-chome 2-17 I QMX Laboratories Limited Nihonbashi-hongokucho Bolford Street Finland I Chuo-ku, Tokyo 103-0021 Thaxted, Essex CM6 2PY Japan United Kingdom France G Tel.: (81) 03 3242 1541 Tel.: (44) 1371 831611 Fax: (81) 03 3246 2566 Fax: (44) 1371 831622 Germany H [email protected] [email protected] www.qmx.com Greece H www.centralchem.co.jp United Kingdom, Ireland, Japan Denmark, Estonia, Finland, Hungary H Latvia, Lithuania, Sweden E Chemical Research 2000 S.r.l.