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Pathways

PathWhiz ID Pathway Meta Data

PW128135

Pw128135 View Pathway
drug action

Norethisterone Action Pathway

Homo sapiens
Norethisterone, also known as norethindrone, is a synthetic progestational hormone used for contraception, prevention of endometrial hyperplasia (hormone replacement therapy), and in the treatment of other hormone-related illnesses. This drug has the same action as endogenous progesterone but with greater potency. This drug acts by altering the cervical and endometrial function, as well as it inhibits the pituitary hormones, like the Follicle-stimulating hormone (FSH) and the Luteinizing hormone (LH) via binding to progesterone receptors that inhibits the Gonadotropin hormone-releasing hormone (GnRH) production in the hypothalamus. The low levels of LH and FSH result in the inhibition of the production of estrogen in the ovaries, thus inhibiting follicular maturation, ovulation, and corpus luteum development. Norethisterone has a low affinity for other steroid receptors, such as the androgen receptor and glucocorticoid receptor. Even if these affinities are low, it is thought that androgen receptor agonism is responsible for some of the adverse effects observed, like acne and serum lipid changes. This drug is administered as an oral tablet.

PW176276

Pw176276 View Pathway
metabolic

Norethisterone Predicted Metabolism Pathway

Homo sapiens
Metabolites of Norethisterone are predicted with biotransformer.

PW146117

Pw146117 View Pathway
drug action

Norethynodrel Drug Metabolism Action Pathway

Homo sapiens

PW128545

Pw128545 View Pathway
drug action

Norfloxacin Action Pathway

Haemophilus influenzae
Norfloxacin is a broad-spectrum fluoroquinolone antibiotic with variable activity against gram-positive and gram-negative bacteria. Typically reserved for the treatment of UTIs due to accumulation in the urine. Norfloxacin inhibits DNA gyrase (topoisomerase II) and topoisomerase IV. These proteins prevent supercoiling in bacterial DNA. The inhibition of DNA gyrase (topoisomerase II) and topoisomerase IV causes supercoiling of the bacterial DNA. This prevents DNA replication.

PW145151

Pw145151 View Pathway
drug action

Norfloxacin Drug Metabolism Action Pathway

Homo sapiens

PW146584

Pw146584 View Pathway
drug action

Norflurane Drug Metabolism Action Pathway

Homo sapiens

PW145055

Pw145055 View Pathway
drug action

Norgestimate Drug Metabolism Action Pathway

Homo sapiens

PW128121

Pw128121 View Pathway
drug action

Norgestrel Action Pathway

Homo sapiens
Norgestrel is a synthetic progestin that has 2 stereoisomers, the active one is called levonorgestrel and the other one is dextronorgestrel. This drug is used in combination with ethinyl estradiol for oral contraception and prevention of pregnancy in women. Levonorgestrel (the active stereoisomer of norgestrel) binds the progesterone and estrogen receptors. Those receptors are found in the mammary glands, the hypothalamus, and in the pituitary gland. With this binding, levonorgestrel inhibits and downgrades the level of secretion of gonadotropin-releasing hormone (GnRH) from the hypothalamus. In consequence, this activity will lower the transcription rate of luteinizing hormone (LH) resulting in the inhibition of its normal surge needed for ovulation. This drug is administered as an oral tablet.

PW146132

Pw146132 View Pathway
drug action

Norgestrel Drug Metabolism Action Pathway

Homo sapiens

PW176277

Pw176277 View Pathway
metabolic

Norgestrel Predicted Metabolism Pathway

Homo sapiens
Metabolites of Norgestrel are predicted with biotransformer.