Từ điển y khoa
Thuật ngữ y khoa chuẩn hóa theo MeSH, ICD-11, SNOMED CT.
62,341 terms indexed
Synthetic organic reactions that use reactions between unsaturated molecules to form cyclical products.
Four carbon cycloparaffin cyclobutane (the structural formula (CH2)4) and its derivatives.
Compounds with a 10-carbon ring.
A homologous group of cyclic GLUCANS consisting of alpha-1,4 bound glucose units obtained by the action of cyclodextrin glucanotransferase on starch or similar substrates. The enzyme is produced by certain species of Bacillus. Cyclodextrins form inclusion complexes with a wide variety of substances.
A gonadal stimulant and inducer of ovulation. It is used in the treatment of infertility and amenorrhea, but is thought to be less effective than CLOMIPHENE.
Seven-carbon cycloparaffin cycloheptane (the structural formula (CH2)7) and its derivatives.
Carboxylic acid derivatives of cyclohexane.
Six-carbon alicyclic hydrocarbons.
Monohydroxy derivatives of cyclohexanes that contain the general formula R-C6H11O. They have a camphorlike odor and are used in making soaps, insecticides, germicides, dry cleaning, and plasticizers.
Cyclohexane ring substituted by one or more ketones in any position.
Six-carbon alicyclic hydrocarbons which contain one or more double bonds in the ring. The cyclohexadienes are not aromatic, in contrast to BENZOQUINONES which are sometimes called 2,5-cyclohexadiene-1,4-diones.
Antibiotic substance isolated from streptomycin-producing strains of Streptomyces griseus. It acts by inhibiting elongation during protein synthesis.
A family of alicyclic hydrocarbons containing an amine group with the general formula R-C6H10NH2.
An amino acid formed by cyclization of leucine. It has cytostatic, immunosuppressive and antineoplastic activities.
Non-frontal low-pressure systems over tropical or sub-tropical waters with organized convection and definite pattern of surface wind circulation.
A group of compounds with an 8-carbon ring. They may be saturated or unsaturated.
A constitutively-expressed subtype of prostaglandin-endoperoxide synthase. It plays an important role in many cellular processes.
An inducibly-expressed subtype of prostaglandin-endoperoxide synthase. It plays an important role in many cellular processes and INFLAMMATION. It is the target of COX2 INHIBITORS.
A subclass of cyclooxygenase inhibitors with specificity for CYCLOOXYGENASE-2.
Compounds or agents that combine with cyclooxygenase (PROSTAGLANDIN-ENDOPEROXIDE SYNTHASES) and thereby prevent its substrate-enzyme combination with arachidonic acid and the formation of eicosanoids, prostaglandins, and thromboxanes.
Alicyclic hydrocarbons in which three or more of the carbon atoms in each molecule are united in a ring structure and each of the ring carbon atoms is joined to two hydrogen atoms or alkyl groups. The simplest members are cyclopropane (C3H6), cyclobutane (C4H8), cyclohexane (C6H12), and derivatives of these such as methylcyclohexane (C6H11CH3). (From Sax, et al., Hawley's Condensed Chemical Dictionary, 11th ed)
A group of alicyclic hydrocarbons with the general formula R-C5H9.
Thiazide diuretic also used as an antihypertensive agent.
A parasympatholytic anticholinergic used solely to obtain mydriasis or cycloplegia.
A 17-KDa cytoplasmic PEPTIDYLPROLYL ISOMERASE involved in immunoregulation. It is a member of the cyclophilin family of proteins that binds to CYCLOSPORINE.
A family of peptidyl-prolyl cis-trans isomerases that bind to CYCLOSPORINS and regulate the IMMUNE SYSTEM. EC 5.2.1.-
Precursor of an alkylating nitrogen mustard antineoplastic and immunosuppressive agent that must be activated in the LIVER to form the active aldophosphamide. It has been used in the treatment of LYMPHOMA and LEUKEMIA. Its side effect, ALOPECIA, has been used for defleecing sheep. Cyclophosphamide may also cause sterility, birth defects, mutations, and cancer.
A plant genus of the family Fabaceae. Members contain cyclopamine, a teratogen producing cyclopia (one eye in the middle of the face) and XANTHONES.
Three-carbon cycloparaffin cyclopropane (the structural formula (CH2)3) and its derivatives.
Antibiotic substance produced by Streptomyces garyphalus.
A genus of coccidian parasites in the family EIMERIIDAE. Cyclospora cayetanensis is pathogenic in humans, probably transmitted via the fecal-oral route, and causes nausea and diarrhea.
Infection with parasitic protozoa of the genus CYCLOSPORA. It is distributed globally and causes a diarrheal illness. Transmission is waterborne.
A cyclic undecapeptide from an extract of soil fungi. It is a powerful immunosupressant with a specific action on T-lymphocytes. It is used for the prophylaxis of graft rejection in organ and tissue transplantation. (From Martindale, The Extra Pharmacopoeia, 30th ed).
A group of closely related cyclic undecapeptides from the fungi Trichoderma polysporum and Cylindocarpon lucidum. They have some antineoplastic and antifungal action and significant immunosuppressive effects. Cyclosporins have been proposed as adjuvants in tissue and organ transplantation to suppress graft rejection.
Steroid derivatives in which one or more bridges is formed between carbon atoms at any locant in any of the rings.
An affective disorder characterized by periods of depression and hypomania. These may be separated by periods of normal mood.
A continuous circle of peptide bonds, typically of 2-3 dozen AMINO ACIDS, so there is no free N- or C-terminus. They are further characterized by six conserved CYSTEINE residues that form CYSTINE KNOT MOTIFS.
Devices for accelerating charged particles in a spiral path by a constant-frequency alternating electric field. This electric field is synchronized with the movement of the particles in a constant magnetic field.
localizes at the actomyosin contractile ring; possesses a non-catalytic transglutaminase domain
A form-genus of CYANOBACTERIA in the order Nostocales, characterized by thin trichomes, cylindrical akinetes, and terminal heterocysts.
a BK channel opener; structure in first source
A cardiotonic cardiac glycoside found in STROPHANTHUS. The aglycone is STROPHANTHIN.
A plant genus of the family POACEAE which is a source of citronella oil and lemongrass oil.
A plant genus of the family ASCLEPIADACEAE. Members contain steroidal glycosides and cytotoxic phenanthroindolizidine N-oxide alkaloids.
A plant genus of the family ASTERACEAE.
A plant species of the genus CYNARA, family ASTERACEAE. The flower bud is the familiar artichoke eaten as a vegetable.
A plant genus of the family POACEAE that is considered a lawn grass by some and a weed by others. It contains allergen Cyn d 7.
A plant genus of the family BALANOPHORACEAE. Members contain stigmastanes and ursanes (TRITERPENES) and lignan glucopyranosides (LIGNANS).