Tag: "hemoglobin" at biology news
Duke Researchers Discover Central Role Of Nitric Oxide In Hemoglobin Action
...nd therapeutic implications. "The duet of hemoglobin
and NO is fantastically symbiotic in carryingout t... inactivatedby hemoglobin, as the iron molecule in hemoglobin
essentially consumes NO. Adding these bits of knowledge together -- that NO keeps vessels o...
Proteins Interacting With RNA And DNA Are Surprisingly Similar
...proteins rangingfrom vital enzymes and hormones to hemoglobin
and structuralcomponents. DNA,or deoxyribonucleic acid, contains the huge library of geneticinformationorganisms need to reproduce and to make RNA. Both RNA and DNA aremade ofmolecules called nucleotides. But RNA is a single-strandedcompound of themo...
Low Iron Levels Cause Weakness In Women Who Are Not Anemic
...g in teen-agers. Iron is an essential component of hemoglobin
in the blood and plays an important role in oxygen transport and utilization. When people consume iron-deficient diets, they first deplete their iron stores in the liver; at the final stage, they become anemic due to insufficient iron to produce new...
Rockefeller University Researchers Hunt For Type 2 Diabetes Susceptibility Genes
...olesterol, triglycerides, uric acid,creatinine and hemoglobin
A1c levels; completing a family and medical history questionnaire ; and having blood pressure, temperature, pulse, weight, height and waist and hipmeasurements taken. People interested in enrolling as participants should call Eileen Buckley,M.S.N....
New RNA Repair May Lead To More Successful Gene Therapy
...nts' bone marrow where red blood cells,which carry hemoglobin
throughout the body, are produced." The new gene therapy technique might work with many other geneticillnesses as well, he said. Co-authors of the report are Drs. Victoria Emerick of SmithKlineBeecham in Collegetown, Pa., and Drs. ...
Effects Of Age Of Introduction Of Complementary Foods On Iron Status OfBreast-Fed Infants In Honduras
... group ( P < 0.05). The percentage with low hemoglobin
(< 103 g/L) did not differ significantly bet... at 6 mo was lower than the percentage with low hemoglobin
or hematocrit, raising questions about the validity of the cutoffs at this age. Infants at greate...
Duke Researchers Call Gene Therapy A Promising Strategy For Sickle Cell Anemia
... a single tinychange in the protein portion of the hemoglobin
molecule. This single mutationdistorts the red blood cells into a sickle shape, making them fragile and easilydestroyed, leading to anemia. Complications of sickle cell disease can includestroke, bone pain, kidney damage and breathing problems. ...
Treating Anemia Reduces Risk Of Death For People With HIV
...h blood transfusions when the redblood cellprotein hemoglobin
drops to severely low levels -- below 8.5 grams pe...ciliter. Researchshows, however, that people with hemoglobin
levels as high as 12g/dl (typicallyconsidered to bethe "normal" range) can benefit from the red-cell...
Scientists Discover How Bacteria Protect Themselves Against Immune System
...rth's atmosphere. "It's actually the forerunner of hemoglobin
- a protein in red blood cells thatcarries oxygen,...s been known for manyyears that there is a form of hemoglobin
in bacteria, but its function wasentirely unknown. It surely wasn't to carry oxygen. Now we've dis...
New Clues To Evolution Of Human Brain
...ain by charting the relative increase inoxygenated hemoglobin
while researchers conduct various experiments on theirsubjects that may, for example, task memory or test senses.) Back to the top...
Synthetic Lock Binds Some Molecules, Excludes Others
...larring), much like the iron compound found in the hemoglobin
in blood. To thiscore are attached dendrimers(branching polymers) that spread out like limbs on a tree. "Depending on where the dendrimers are placed, the resulting receptor has eithera big round hole or a narrowchimney above and below the metal ion,...
Genetic Research Boosts Understanding Of Iron's Path Through Body, Diseases Of Iron Metabolism
...enters mitochondria, which use it to make heme for hemoglobin
and generateenergy. In the current study, ...bnormally small redblood cells that contained less hemoglobin
than normal--again suggesting that thetransferrin cycle operates at maximal capacity during normal e...
The Sagan criteria for life revisited
... blocks of brightly pigmented biomolecules such as hemoglobin
and chlorophyll which reflect only certain wavelengths of visible light. Chlorophylls, for example, are greenish pigments which contain a porphyrin ring. This is a stable ring-shaped molecule around which electrons are free to migrate. Because the el...
Jefferson scientists further develop gene repair technique
...f the ß globingene involved in manufacturing hemoglobin
and show the changes were inheritable.He also used the technique to fix copies of the green fluorescent protein gene,which contained one- or two-base deletions. His team has "learned more about howthe molecule works," he says, which will "set the sta...
Common parasite overturns traditional beliefs about the evolution and role of hemoglobin
..., such as humans. The worm, in short,reveals that hemoglobin
evolved first and foremost to handle the molecule ... "Both structurally and functionally, Ascaris hemoglobin
is a linkbetween bacterial hemoglobin
and mammalian hemoglobin," said WashingtonUniversity cell biol...
Researchers discover hemoglobin's enzymatic nature
...one billion people worldwide, has uncommonlystrong hemoglobin
that binds to oxygen 25,000-times more tightly than does humanhemoglobin. The affinity of Ascaris hemoglobin
for oxygen is so powerfulthat many researchers believed the molecule could not possibly play a role ...
Gene mutation may no longer protect certain populations from alcoholism
... discordant musical notes. Just as mutationof the hemoglobin
gene can cause sickle-cell anemia, so too can genetic mutation of the liver enzymealdehyde dehydrogenase (ALDH) cause a person to have an aversive reaction to alcohol. "The major way you eliminate alcohol is via the liver," said Matt McGue, professo...
Evolutionary implications: myoglobin-like proteins found in ancient microorganisms
...myoglobin (found in muscle) and its close relative hemoglobin
(the main protein in the red blood cell) play an essential role in oxygen transport and storage. The newly identified proteins may be the evolutionary ancestors of proteins involved in oxygen sensing as well as transport and storage. The findings, w...
Anemia in Cree infants
... and her colleagues tested the association between hemoglobin
(Hb) concentration and mean cell volume at 9 months of age, weight gain between birth and 9 months, and type of milk consumed when the infant visited the 9-month well-baby clinic. The authors report that babies fed formula at 9 months had a higher me...
Tucson researcher receives national award
...eme proteins -- a class of molecules that includes hemoglobin
and components of the immune system - function as ...teins ferry gases: for example, the iron center of hemoglobin
delivers oxygen to cells. Others carry electrons plucked from food, which cells use as energy to mai...
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