时间:2018-12-07 作者:英语课 分类:健康与环境


英语课

HEALTH REPORT - May 22, 2002: Guggulsterone & Cholesterol 1


By Nancy Steinbach
21 May 2002, 20:20 UTC



This is the VOA Special English Health Report.


Researchers say that a natural substance found in some trees can control high cholesterol in laboratory animals.
Cholesterol is a fatty substance in the blood. Too much of it can attach to the inside of blood vessels 2, restrict
blood flow, and cause heart disease.


The guggul (GOO-gle) tree grows in dry areas of India, Pakistan and Afghanistan. A substance
found inside the guggul tree has been used in India for two-thousand years to control weight
and treat arthritis 3.


About forty years ago, an Indian researcher found that the substance was effective against heart
disease. Later studies in India showed that it lowered cholesterol. In India, the substance has



been an approved treatment for high cholesterol for almost twenty years.


American researchers at the Baylor School of Medicine in Houston, Texas reported the results of recent work on
the substance in the publication Science. They showed that the liquid inside the guggul tree contains a compound
called guggulsterone (GOO-gle-STER-own). They discovered how guggulsterone controls cholesterol levels. It
blocks the action of a receptor called F-X-R. A receptor is a protein that sends messages to cells. F-X-R helps
control the amount of cholesterol in the body. Blocking the action of the F-X-R receptor would mean that more
cholesterol is naturally removed from the body.


Other researchers at the University of Texas Southwestern Medical Center in Dallas tested guggulsterone on two
groups of mice. One group had normal F-X-R receptors. The other group had no F-X-R receptors. The
cholesterol levels dropped in the livers of mice with the F-X-R receptor, but not in the others. The researchers say
this proves that guggulsterone works by affecting the F-X-R receptor.


The researchers do not know how guggulsterone affects the F-X-R receptor. They say more tests must be done.
However, they say the substance might be used to control cholesterol in people who cannot take the drugs now
used for that purpose.


The researchers say the discovery supports the idea that some traditional medicines may have important uses in
modern medicine.


Guggulsterone can be bought in stores around the world. However, the researchers say people should not use it
without medical advice. They say guggulsterone can affect the action of other drugs.


This VOA Special English Health Report was written by Nancy Steinbach.



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1 cholesterol
n.(U)胆固醇
  • There is cholesterol in the cell of body.人体细胞里有胆固醇。
  • They are determining the serum-protein and cholesterol levels.他们正在测定血清蛋白和胆固醇的浓度。
2 vessels
n.血管( vessel的名词复数 );船;容器;(具有特殊品质或接受特殊品质的)人
  • The river is navigable by vessels of up to 90 tons. 90 吨以下的船只可以从这条河通过。 来自《简明英汉词典》
  • All modern vessels of any size are fitted with radar installations. 所有现代化船只都有雷达装置。 来自《现代汉英综合大词典》
3 arthritis
n.关节炎
  • Rheumatoid arthritis has also been linked with the virus.风湿性关节炎也与这种病毒有关。
  • He spent three months in the hospital with acute rheumatic arthritis.他患急性风湿性关节炎,在医院住了三个月。
学英语单词
abject
Achaemenians
acoustical telegraphy
aluminium nitride ceramics
based storage area
boiler load curve
Bothwell
branding
bromoarenes
CAMAC highway
channel purchase decision
chromometers
chucho
circuity of action
cloxacillin
counter insurgent
cyberization
dark ground
distorting effect
DMA (direct memory access)
double shot moulding
dye pasting
electric hydraulic pump
evenness of dressing
find difficultydoing sth
focusing monochromator
friendly lead
fusarium oxysporum schl.f. callistiphi (beach) synder et hansen
gasless
gastric hemorrhage
glitterance
great colon
gymnemates
ha(r)slet
heat transport
horny pharyngeal teeth
immunodots
inline processing
Japanese capital
lip reflex
lower portion of hypocotyl
mhf(massive hydraulic fracturing)
minidrinier
monotower crane
mountain peat
multiple factor
mycosphaerella nawae hiura et ikata
Nakdong
narratio
nower
nucleus mesencephalicus nervi trigemini
operational results
Orange Free State
ordnance variable automatic computer
peptics
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Phycomycetes group
physical thing language
polygonal rubble
proctosurgical
progoneate
propargylglycine
radiopharmaceutic(al)
ratsiraka
receipt for remittance
regiones faciei
repeat a year
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retainer with balls
reverse current time-lag relay
rfes
Saint-Simonian
sawds
sensorimotor arc
short dung
skirt relief
sodium deposition
sopaipilla
sparkiest
spline shaft grinder
sprue pin
Steinbrocker
step and repeater
stirocainide
surfactant flooding
surrounding waters
swing over bed
tail lamps
terminal programming system
TFLOPS
thommoes
time-base pressing type spectrum analyzer
torch assembly
transistor servo preamplifier
trying situation
tvr (television translater)
uncountable aggragate
vb
Veterans Day
wave runup
yellowwood tree
zero insertion force socket