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Pathways

PathWhiz ID Pathway Meta Data

PW176089

Pw176089 View Pathway
metabolic

Mefenamic acid Predicted Metabolism Pathway new

Homo sapiens
Metabolites of Mefenamic acid are predicted with biotransformer.

PW144484

Pw144484 View Pathway
drug action

Mefloquine Drug Metabolism Action Pathway

Homo sapiens

PW128127

Pw128127 View Pathway
drug action

Megestrol acetate Action Pathway

Homo sapiens
Megestrol acetate is a synthetic progestational hormone initially developed as a contraceptive. Nowadays, it is used as a drug to treat anorexia and cachexia (or unexplained weight loss) and as an antineoplastic agent to treat inoperable breast cancer, endometrial cancer, and prostate cancer (palliative treatment). Megestrol has the same physiologic effects as natural progesterone: induction of secretory changes in the endometrium, increase in basal body temperature, and pituitary inhibition. By inhibiting the release of GnRH in the hypothalamus, there is a decrease in LH and FSH synthesis in the anterior pituitary gland. This results in a low level of LH, because the ovaries need a surge of this hormone to release the egg, there is no ovulation. The mechanism of action of megestrol's antianorexic and anticachetic is undetermined. It is thought to act by stimulating the appetite or by its metabolic effects (via interferences with the production or action of mediators like cachectin; inhibition of the adipocyte lipogenic enzymes). This drug is administered as an oral tablet.

PW144477

Pw144477 View Pathway
drug action

Megestrol acetate Drug Metabolism Action Pathway

Homo sapiens

PW146146

Pw146146 View Pathway
drug action

Meglumine Drug Metabolism Action Pathway

Homo sapiens

PW122536

Pw122536 View Pathway
protein

mehri javadi

Arabidopsis thaliana

PW124209

Pw124209 View Pathway
signaling

MEKK2 IL6

Homo sapiens

PW122515

Pw122515 View Pathway
metabolic

Melanin Biosynthesis

Danio rerio
Melanin is used in the skin of zebrafish for camouflage, mimicry, communication and protection from the sun. It is also a pigment in the eyes. Melanin is produced by melanocytes, organelles within the skin cells. Eumelanins are brown and black pigments, while other melanins exist, pheomelanin being yellow and red pigments, and neuromelanin being used in the brain. All of these pigments require tyrosine to start their synthesis. To start this pathway, tyrosine is transported into the melanosome by an amino acid transporter, and at this point it is metabolized to L-dopachrome . Within the melanosome membrane, L-dopachrome tautomerase converts L-dopachrome to 5,6-dihydroxyindole-2-carboxylic acid. This then interacts with tyrosinase-related protein 1a, which adds an oxygen molecule to form 5,6-indolequinone-2-carboxylic acid. This then undergoes a final reaction to form eumelanin. Alternatively, L-dopachrome can spontaneously lose a carbon dioxide molecule, forming 5,6-dihydroxyindole. Following this, it can interact with tyrosinase to form indole-5,6-quinone. Finally, another reaction occurs, forming eumelanin from this compound.

PW002512

Pw002512 View Pathway
signaling

Melanocortin 1 receptor

Mus musculus

PW124207

Pw124207 View Pathway
metabolic

Melatonin Biosynthesis

Homo sapiens