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Isopregnanolone

Index Isopregnanolone

Isopregnanolone, also known as isoallopregnanolone and epiallopregnanolone, as well as sepranolone, and as 3β-hydroxy-5α-pregnan-20-one or 3β,5α-tetrahydroprogesterone (3β,5α-THP), is an endogenous neurosteroid and a natural 3β-epimer of allopregnanolone. [1]

Table of Contents

  1. 33 relations: Allopregnanolone, Allosteric modulator, Anesthesia, Barbiturate, Benzodiazepine, Biological half-life, Biosynthesis, Clinical trial, Endogeny (biology), Enzyme, Epimer, Epipregnanolone, GABAA receptor, Hormone, Learning disability, Menstrual cycle, Natural product, Neurosteroid, Pregnancy, Pregnanolone, Premenstrual dysphoric disorder, Progesterone, Protein subunit, Reaction intermediate, Receptor antagonist, Saccade, Sedation, 3α-Hydroxysteroid dehydrogenase, 3β-Androstanediol, 3β-Dihydroprogesterone, 3β-Hydroxysteroid dehydrogenase, 5α-Dihydroprogesterone, 5α-Reductase.

Allopregnanolone

Allopregnanolone is a naturally occurring neurosteroid which is made in the body from the hormone progesterone. Isopregnanolone and Allopregnanolone are neurosteroids and Pregnanes.

See Isopregnanolone and Allopregnanolone

Allosteric modulator

In pharmacology and biochemistry, allosteric modulators are a group of substances that bind to a receptor to change that receptor's response to stimuli.

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Anesthesia

Anesthesia or anaesthesia is a state of controlled, temporary loss of sensation or awareness that is induced for medical or veterinary purposes.

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Barbiturate

Barbiturates are a class of depressant drugs that are chemically derived from barbituric acid.

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Benzodiazepine

Benzodiazepines (BZD, BDZ, BZs), colloquially called "benzos", are a class of depressant drugs whose core chemical structure is the fusion of a benzene ring and a diazepine ring.

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Biological half-life

Biological half-life (elimination half-life, pharmacological half-life) is the time taken for concentration of a biological substance (such as a medication) to decrease from its maximum concentration (Cmax) to half of Cmax in the blood plasma.

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Biosynthesis

Biosynthesis, i.e., chemical synthesis occuring in biological contexts, is a term most often referring to multi-step, enzyme-catalyzed processes where chemical substances absorbed as nutrients (or previously converted through biosynthesis) serve as enzyme substrates, with conversion by the living organism either into simpler or more complex products.

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Clinical trial

Clinical trials are prospective biomedical or behavioral research studies on human participants designed to answer specific questions about biomedical or behavioral interventions, including new treatments (such as novel vaccines, drugs, dietary choices, dietary supplements, and medical devices) and known interventions that warrant further study and comparison.

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Endogeny (biology)

Endogenous substances and processes are those that originate from within a living system such as an organism, tissue, or cell.

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Enzyme

Enzymes are proteins that act as biological catalysts by accelerating chemical reactions.

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Epimer

In stereochemistry, an epimer is one of a pair of diastereomers.

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Epipregnanolone

Epipregnanolone, also known as 3β-hydroxy-5β-pregnan-20-one, 3β,5β-tetrahydroprogesterone, or 3β,5β-THP, is an endogenous neurosteroid. Isopregnanolone and Epipregnanolone are GABAA receptor negative allosteric modulators, neurosteroids and Pregnanes.

See Isopregnanolone and Epipregnanolone

GABAA receptor

The GABAA receptor (GABAAR) is an ionotropic receptor and ligand-gated ion channel.

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Hormone

A hormone (from the Greek participle ὁρμῶν, "setting in motion") is a class of signaling molecules in multicellular organisms that are sent to distant organs or tissues by complex biological processes to regulate physiology and behavior.

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Learning disability

Learning disability, learning disorder, or learning difficulty (British English) is a condition in the brain that causes difficulties comprehending or processing information and can be caused by several different factors.

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Menstrual cycle

The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible.

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Natural product

A natural product is a natural compound or substance produced by a living organism—that is, found in nature.

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Neurosteroid

Neurosteroids, also known as neuroactive steroids, are endogenous or exogenous steroids that rapidly alter neuronal excitability through interaction with ligand-gated ion channels and other cell surface receptors. Isopregnanolone and Neurosteroid are neurosteroids.

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Pregnancy

Pregnancy is the time during which one or more offspring develops (gestates) inside a woman's uterus (womb).

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Pregnanolone

Pregnanolone, also known as eltanolone, is an endogenous inhibitory neurosteroid which is produced in the body from progesterone. Isopregnanolone and Pregnanolone are neurosteroids.

See Isopregnanolone and Pregnanolone

Premenstrual dysphoric disorder

Premenstrual dysphoric disorder (PMDD) is a mood disorder characterized by emotional, cognitive, and physical symptoms.

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Progesterone

Progesterone (P4) is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. Isopregnanolone and Progesterone are neurosteroids and Pregnanes.

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Protein subunit

In structural biology, a protein subunit is a polypeptide chain or single protein molecule that assembles (or "coassembles") with others to form a protein complex.

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Reaction intermediate

In chemistry, a reaction intermediate, or intermediate, is a molecular entity arising within the sequence of a stepwise chemical reaction.

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Receptor antagonist

A receptor antagonist is a type of receptor ligand or drug that blocks or dampens a biological response by binding to and blocking a receptor rather than activating it like an agonist.

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Saccade

A saccade (jerk) is a quick, simultaneous movement of both eyes between two or more phases of fixation in the same direction.

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Sedation

Sedation is the reduction of irritability or agitation by administration of sedative drugs, generally to facilitate a medical procedure or diagnostic procedure.

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3α-Hydroxysteroid dehydrogenase

3α-Hydroxysteroid dehydrogenase (3α-HSD) is an enzyme (1.1.1.50) that plays a role in the metabolism of steroids and non-steroidal compounds in humans and other species, such as bacteria, fungi, plants, and so on.

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3β-Androstanediol

3β-Androstanediol, also known as 5α-androstane-3β,17β-diol, and sometimes shortened in the literature to 3β-diol, is an endogenous steroid hormone and a metabolite of androgens like dehydroepiandrosterone (DHEA) and dihydrotestosterone (DHT).

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3β-Dihydroprogesterone

3β-Dihydroprogesterone (3β-DHP), also known as 3β-hydroxyprogesterone, or pregn-4-en-3β-ol-20-one (4-pregnenolone, δ4-pregnenolone), is an endogenous steroid. Isopregnanolone and 3β-Dihydroprogesterone are Pregnanes.

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3β-Hydroxysteroid dehydrogenase

3β-Hydroxysteroid dehydrogenase/Δ5-4 isomerase (3β-HSD) is an enzyme that catalyzes the biosynthesis of the steroid progesterone from pregnenolone, 17α-hydroxyprogesterone from 17α-hydroxypregnenolone, and androstenedione from dehydroepiandrosterone (DHEA) in the adrenal gland.

See Isopregnanolone and 3β-Hydroxysteroid dehydrogenase

5α-Dihydroprogesterone

5α-Dihydroprogesterone (5α-DHP, allopregnanedione, or 5α-pregnane-3,20-dione) is an endogenous progestogen and neurosteroid that is synthesized from progesterone. Isopregnanolone and 5α-Dihydroprogesterone are neurosteroids and Pregnanes.

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5α-Reductase

5α-Reductases, also known as 3-oxo-5α-steroid 4-dehydrogenases, are enzymes involved in steroid metabolism.

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References

[1] https://en.wikipedia.org/wiki/Isopregnanolone

Also known as 3β,5α-Tetrahydroprogesterone, 3β-Hydoxy-5α-pregnan-20-one, Epiallopregnanolone, Isoallopregnanolone, Sepranolone.