Từ điển y khoa
Thuật ngữ y khoa chuẩn hóa theo MeSH, ICD-11, SNOMED CT.
62,341 terms indexed
A disease caused by a deficiency of thiamine (vitamin B1) and characterized by polyneuritis, cardiac pathology, and edema. The epidemic form is found primarily in areas in which white (polished) rice is the staple food, as in Japan, China, the Philippines, India, and other countries of southeast Asia. (Dorland, 27th ed)
A man-made radioactive actinide with atomic symbol Bk, atomic number 97, and atomic weight 247. Its valence can be +3 or +4. Twelve isotopes have been produced with mass numbers 240-251.
The capital of Germany.
A British colony in the western North Atlantic Ocean about 640 miles east southeast of Cape Hatteras, North Carolina. It comprises a group of about 300 islands of which only about 20 are inhabited. It is called also the Bermuda Islands or the Bermudas. It was named for the Spanish explorer Juan Bermudez who visited the islands in 1515. (From Webster's New Geographical Dictionary, 1988, p140 and Room, Brewer's Dictionary of Names, 1992, p61)
A familial coagulation disorder characterized by a prolonged bleeding time, unusually large platelets, and impaired prothrombin consumption.
A plant genus of the family Lecythidaceae which is the source of edible Brazil nuts.
A form of pneumoconiosis caused by inhaled rare metal BERYLLIUM or its soluble salts which are used in a wide variety of industry including alloys, ceramics, radiographic equipment, and vacuum tubes. Berylliosis is characterized by an acute inflammatory reaction in the upper airway leading to BRONCHIOLITIS; PULMONARY EDEMA; and pneumonia.
An element with the atomic symbol Be, atomic number 4, and atomic weight 9.01218. Short exposure to this element can lead to a type of poisoning known as BERYLLIOSIS.
mutation in BEST1
RefSeq NM_001108895
RefSeq NM_001191783
mutation in BEST1
High energy POSITRONS or ELECTRONS ejected from a disintegrating atomic nucleus.
Brain waves with frequency between 15-30 Hz seen on EEG during wakefulness and mental activity.
A species of the Beta genus. Cultivars are used as a source of beets (root) or chard (leaves).
Serum proteins with an electrophoretic mobility that falls between ALPHA-GLOBULINS and GAMMA-GLOBULINS.
mutation in 3-hydroxyisobutyryl-CoA hydrolase (HIBCH)
mutation in UPB1
An EGF family member that plays an important role in regulating growth and differentiation of PANCREATIC BETA CELLS. Betacellulin has specificity for the EGF RECEPTOR and the ERBB-4 RECEPTOR.
Conjugates of betalamic acid with cyclo-dopa, both of which derive from TYROSINE. They appear similar to INDOLES but are biosynthesized by a different path and contain N+. Members are red or violet COLORING AGENTS found in the Caryophyllales order of PLANTS and some BASIDIOMYCETES.
A subfamily of HERPESVIRIDAE characterized by a relatively long replication cycle. Genera include: CYTOMEGALOVIRUS; MUROMEGALOVIRUS; and ROSEOLOVIRUS.
A histamine analog and H1 receptor agonist that serves as a vasodilator. It is used in MENIERE DISEASE and in vascular headaches but may exacerbate bronchial asthma and peptic ulcers.
A naturally occurring compound that has been of interest for its role in osmoregulation. As a drug, betaine hydrochloride has been used as a source of hydrochloric acid in the treatment of hypochlorhydria. Betaine has also been used in the treatment of liver disorders, for hyperkalemia, for homocystinuria, and for gastrointestinal disturbances. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1341)
An NAD+ dependent enzyme that catalyzes the oxidation of betain aldehyde to BETAINE.
A ZINC metalloenzyme that catalyzes the transfer of a methyl group from BETAINE to HOMOCYSTEINE to produce dimethylglycine and METHIONINE, respectively. This enzyme is a member of a family of ZINC-dependent METHYLTRANSFERASES that use THIOLS or selenols as methyl acceptors.
A genus of the family ORTHOMYXOVIRUS causing HUMAN INFLUENZA and other diseases primarily in humans. In contrast to INFLUENZAVIRUS A, no distinct antigenic subtypes of hemagglutinin (VIRAL HEMAGGLUTININ) and NEURAMINIDASE are recognized. The type species is INFLUENZA B VIRUS.
Compounds derived from TYROSINE via betalamic acid, including BETAXANTHINS and BETACYANINS. They are found in the Caryophyllales order of PLANTS and some BASIDIOMYCETES.
A glucocorticoid given orally, parenterally, by local injection, by inhalation, or applied topically in the management of various disorders in which corticosteroids are indicated. Its lack of mineralocorticoid properties makes betamethasone particularly suitable for treating cerebral edema and congenital adrenal hyperplasia. (From Martindale, The Extra Pharmacopoeia, 30th ed, p724)
The 17-valerate derivative of BETAMETHASONE. It has substantial topical anti-inflammatory activity and relatively low systemic anti-inflammatory activity.
for treatment of a wide range of grass and broad-leaved weeds in sugar beet crops; composed of an Advanced Micro Droplet (AMD) three-way coformulation of phenmedipham, desmedipham, and ethofumesate
A genus of DNA viruses in the family PAPILLOMAVIRIDAE, causing cutaneous lesions in humans. Infections exist in latent form in the general population and are activated under conditions of IMMUNOSUPPRESSION THERAPY.
A class in the phylum PROTEOBACTERIA comprised of chemoheterotrophs and chemoautotrophs which derive nutrients from decomposition of organic material.
A genus of the family RETROVIRIDAE consisting of viruses with either type B or type D morphology. This includes a few exogenous, vertically transmitted and endogenous viruses of mice (type B) and some primate and sheep viruses (type D). MAMMARY TUMOR VIRUS, MOUSE is the type species.
Conjugates of betalamic acid with AMINO ACIDS. Some of them are yellow COLORING AGENTS in the Caryophyllales order of PLANTS. This should not be confused with xanthin which is a term used for CAROTENES nor with XANTHINES.
A cardioselective beta-1-adrenergic antagonist with no partial agonist activity.
A histamine H2 agonist used clinically to test gastric secretory function.
A slowly hydrolyzing muscarinic agonist with no nicotinic effects. Bethanechol is generally used to increase smooth muscle tone, as in the GI tract following abdominal surgery or in urinary retention in the absence of obstruction. It may cause hypotension, HEART RATE changes, and BRONCHIAL SPASM.
Quaternary ammonium compounds that include BETHANECHOL.
A guanidinium antihypertensive agent that acts by blocking adrenergic transmission. The precise mode of action is not clear.
A plant genus of the family BETULACEAE. The tree has smooth, resinous, varicolored or white bark, marked by horizontal pores (lenticels), which usually peels horizontally in thin sheets.
A plant family of the order Fagales, subclass Hamamelidae, class Magnoliopsida. They have simple, serrate, alternate leaves. Male flowers are borne in long, pendulous catkins; the female in shorter, pendulous or erect catkins. The fruit is usually a small nut or a short-winged samara.