Dens Health Dictionary

One of a group of proteins that transport lipids in the blood. High levels of high density lipoprotein can help protect against atherosclerosis. (See also fats and oils; low density lipoprotein.)... high density lipoprotein

One of a group of proteins that are combined with lipids in the plasma. Low density lipoproteins (LDLs) are involved in the transport of

cholesterol in the bloodstream. An excess of LDLs (see hyperlipidaemias) is associated with atherosclerosis. (See also high density lipoprotein.)... low density lipoprotein

The ratio of the number of new cases of the disease and the amount of population-time of follow-up (e.g. person-year) of the disease-free population.... average incidence density

DC.

Family: Compositae; Asteraceae.

Habitat: Sub-tropical Himalayas, Nepal, Sikkim, Assam and Khasia hills.

English: Ngai Camphor.

Ayurvedic: Kukundara (var.).

Action: Juice of fresh leaves— insecticidal, mosquito repellant. The plant yields an essential oil which yields camphor.

Aerial part contains sesquiterpene lactones, tagitinin A, tirolundin ethyl ether and iso-alantolactone derivatives.... blumea densiflora

The number of malaria parasites in a specified volume of blood.... parasite density

(Griseb.) Kashyapa.

Synonym: S. decussata Nimmo ex Grah.... swertia densifolia

The number of a given vector species present. It may be expressed in relative terms (e.g., the biting density in relation to the human host) or in absolute numbers (e.g., the number present in a room, cattle-shed or artificial shelter).... vector density

The compactness of bone tissue in relation to its volume. A decrease in bone density is a normal part of aging. However, in some people, excessive loss of density (see osteoporosis) can lead to fractures. Less commonly, an increase in bone density (see osteosclerosis) occurs in certain disorders (see osteopetrosis; Paget’s disease). Bone density can be measured by a technique known as densitometry, which uses low-dose X-rays.... bone density

An imaging technique that uses low-dose X-rays to measure bone density, as determined by the concentration of calcified material. It is used to diagnose and assess the severity of osteoporosis, especially in the spine and femur, and to assess its response to treatment. During the procedure, X-rays are passed through the body. A computer assesses the amount of X-rays absorbed by the body and uses this information to calculate the bone density.... densitometry

The “compactness” of a substance, defined as its mass per unit volume. In radiology, the term relates to the amount of radiation absorbed by the structure being X-rayed. Bone, which absorbs radiation well, appears white on X-ray film. A lung, which contains mostly air, absorbs little radiation and is dark on film. The same holds true in CT scanning and MRI. (See also specific gravity.)... density

see mesangiocapillary glomerulonephritis.... dense deposit disease

literally, an infolded tooth: a specific type of tooth malformation that mainly affects upper lateral incisors to varying degrees. Also known as a dens in dente (‘tooth within a tooth’), it involves an infolding of enamel into dentine.... dens invaginatus

see specific gravity.... relative density

(VLDL) a *lipoprotein that is the precursor of *low-density lipoprotein (LDL). Containing triglycerides and cholesterol, it is produced in the liver and circulates in the bloodstream, where its triglycerides are hydrolysed to free fatty acids by *lipoprotein lipase. The remaining lipoprotein becomes progressively denser and richer in cholesterol to form LDL.... very low-density lipoprotein