Zerelin (Buserelin)
Zerelin (Buserelin) Uses, Dosage, Side Effects, Food Interaction and all others data.
Zerelin (Buserelin) is a synthetic peptide analog of the luteinizing hormone-releasing hormone (LHRH) agonist, which stimulates the pituitary gland's gonadotrophin-releasing hormone receptor (GnRHR). It is used in prostate cancer treatment.
The substitution of glycine in position 6 by D-serine, and that of glycinamide in position 10 by ethylamide, leads to a nonapeptide with a greatly enhanced LHRH effect. The effects of buserelin on FSH and LH release are 20 to 170 times greater than those of LHRH. Zerelin (Buserelin) also has a longer duration of action than natural LHRH. Investigations in healthy adult males and females have demonstrated that the increase in plasma LH and FSH levels persist for at least 7 hours and that a return to basal values requires about 24 hours.Clinical inhibition of gonadotropin release, and subsequent reduction of serum testosterone or estradiol to castration level, was found when large pharmacologic doses (50-500 mcg SC/day or 300-1200 mcg IN/day) were administered for periods greater than 1 to 3 months. Chronic administration of such doses of buserelin results in sustained inhibition of gonadotropin production, suppression of ovarian and testicular steroidogenesis and, ultimately, reduced circulating levels of gonadotropin and gonadal steroids. These effects form the basis for buserelin use in patients with hormone-dependent metastatic carcinoma of the prostate gland as well as in patients with endometriosis.
| Trade Name | Zerelin (Buserelin) |
| Generic | Buserelin |
| Buserelin Other Names | Buserelin, Buserelina, Busereline, Buserelinum, Etilamide, Tiloryth |
| Type | |
| Formula | C60H86N16O13 |
| Weight | Average: 1239.447 Monoisotopic: 1238.656026893 |
| Protein binding | 15% |
| Groups | Approved, Investigational |
| Therapeutic Class | |
| Manufacturer | |
| Available Country | India |
| Last Updated: | September 19, 2023 at 7:00 am |
Uses
Zerelin (Buserelin) is a LHRH agonist used for the palliative treatment of hormone-dependent advanced carcinoma of the prostate gland in males and treatment of endometriosis in females.
Zerelin (Buserelin) may be used in the treatment of hormone-responsive cancers such as prostate cancer or breast cancer, estrogen-dependent conditions (such as endometriosis or uterine fibroids), and in assisted reproduction.
Zerelin (Buserelin) is also used to associated treatment for these conditions: Endometriosis, Stage D2 Prostatic carcinoma
How Zerelin (Buserelin) works
Zerelin (Buserelin) stimulates the pituitary gland's gonadotrophin-releasing hormone receptor (GnRHR). Zerelin (Buserelin) desensitizes the GnRH receptor, reducing the amount of gonadotropin. In males, this results in a reduction in the synthesis and release of testosterone. In females, estrogen secretion is inhibited. While initially, there is a rise in FSH and LH levels, chronic administration of Zerelin (Buserelin) results in a sustained suppression of these hormones.
Toxicity
Zerelin (Buserelin) may induce early, transient increase in serum testosterone or estradiol which can lead in the exacerbation of signs and symptoms of metastatic prostate cancer or endometriosis. Adverse reactions reported at more than 10% occurrence include headache, loss of libido in patients with prostate cancer, hot flashes, hypermenorrhea, decreased libido in prostate cancer and endometriosis, flatulence, impotence, vaginal dryness, back pain and nasal mucosa irritation.
Food Interaction
No interactions found.Volume of Distribution
Zerelin (Buserelin) circulates in serum predominantly in intact active form. Preferred accumulation is preferentially in the liver and kidneys as well as in the anterior pituitary lobe, the biological target organ.
Elimination Route
Zerelin (Buserelin) is water soluble and readily absorbed after subcutaneous injection (70% bioavailable). However, bioavailability after oral absorption. When administered correctly via the nasal route, it may be absorbed in the nasal mucosa to achieve sufficient plasma levels.
Half Life
The elimination half-life is approximately 50 to 80 minutes following intravenous administration, 80 minutes after subcutaneous administration and approximately 1 to 2 hours after intranasal administration.
Elimination Route
Zerelin (Buserelin) and its inactive metabolites are excreted via the renal and biliary routes. In man it is excreted in urine at 50% in its intact form.
Innovators Monograph
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