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Swallowed in Biological News

Scientists test device to track medication adherence in patients with HIV/AIDS

... determine how well the byproduct could be detected, six healthy volunteers swallowed empty pills in which the capsules contained trace amounts of 2-butanol. ... adherence system work as predicted. We were able to conclusively show who swallowed the capsules containing the 2-butanol. With further optimization, we are ...

New discovery suggests trees evolved camouflage defense against long extinct predator

... may also reduce the probability of leaf outlines and help camouflage leaves against the sunlight-draped forest floor. Moa also lacked teeth and swallowed leaves by placing them in their bills and snapping their head forward. The long rigid leaves produced by P. crassifolius would have been difficult ...

Scavenger birds chew the fat

... up large bones on rocky surfaces, known as 'ossuaries', throwing the bones down from the air until they break up into small enough pieces to be swallowed or carried. Bearded vultures are one of the few species of vulture who do not feed their young by regurgitation but transport prey remains to the ...

Synthetic molecules may be less expensive alternative to therapeutic antibodies, researchers find

... must be injected. By contrast, peptoids are resistant to the stomach enzymes that degrade natural peptides, so it is possible that they could be swallowed as a pill. Peptoids are much less expensive and easier to manufacture than antibodies, Dr. Kodadek said. They are also much smaller than antibodies, ...

From delicious to death: Understanding taste

... taste evaluates everything humans put into their mouths. Taste mediates recognition of a substance and the final decision process before it is either swallowed and taken into the body, or rejected as inappropriate. A new primer written by scientists at the Monell Center and Florida State University and ...

Intravenous gene therapy protects normal tissue of mice during whole-body radiation

... department of radiation oncology, University of Pittsburgh School of Medicine. In previous studies, we demonstrated that gene therapy can be both swallowed in liquid form and inhaled through a nebulizer prior to radiation exposure to protect healthy tissues from damage. In this study, we found that the ...

Chemistry turns killer gas into potential cure

... activity of cells and macrophages* which attack transplanted organs. The researchers have developed innovative water-soluble molecules which, when swallowed or injected, safely release small amounts of CO inside the human body. Research carried out in the last decade had already highlighted possible ...

Metagenomics of the deep Mediterranean

... sea bacteria be luminescent" One possible explanation is that they become attractive to animals that at these depths are very photosensitive. Being swallowed by one of these creatures would give the bacteria a temporary oasis of nutrient-rich conditions before another long dip in the abyssal black. ...

Metagenomics of the deep Mediterranean

... sea bacteria be luminescent" One possible explanation is that they become attractive to animals that at these depths are very photosensitive. Being swallowed by one of these creatures would give the bacteria a temporary oasis of nutrient-rich conditions before another long dip in the abyssal black. ...

UF scientists reveal how dietary restriction cleans cells

... is all about. Fortunately, younger cells are adept at reducing, recycling and rebuilding. In this process, damaged mitochondria are quickly swallowed up and degraded. The broken down pieces are then recycled and used to build new mitochondria. However, older cells are less adept at this process, so ...

Enzyme delivered in smaller package protects cells from radiation damage

... According to Dr. Greenberger, whose group is currently conducting a phase I/II clinical trial in lung cancer patients consisting of twice-weekly swallowed MnSOD for protection of the esophagus from chemoradiotherapy damage, these results suggest that minicircle DNA containing the human MnSOD transgene ...

Releasing fish for the future

... said some of these actions were found to massively boost fish survival. “Simply cutting the line rather than attempting to remove hooks swallowed by mulloway and yellowfin bream increased their survival from 12 percent to more than 85 percent. “Up to 76 percent of the released line-cut, ...

Iowa State scientists demonstrate first use of nanotechnology to enter plant cells

... that made the nanoparticle look yummy to the plant cells so they would swallow the particles," Torney said. It worked. The nanoparticles were swallowed by the plant protoplasts, which are a type of spherical plant cells without cell walls. Most plant transformation, however, occurs with the use ...

Fat overrides effects of vitamin C

... Nitrite, which is present in our saliva and is derived from nitrate in our diet, is thought to be a pre-carcinogen for gastric cancer. When it is swallowed and enters the acidic environment of the stomach, nitrite spontaneously forms nitrosating species able to convert a range of targets, such as ...

Intravenous gene therapy protects normal tissue of mice during whole-body radiation

... department of radiation oncology, University of Pittsburgh School of Medicine. "In previous studies, we demonstrated that gene therapy can be both swallowed in pill form and inhaled through a nebulizer prior to radiation exposure to protect healthy tissues from damage. In this study, we found that the ...

Hopkins researchers discover how brain protein might control memory

... and wound up with more receptors than normal on their surfaces. Adding more Arc to cells caused the opposite to happen; the cells hyperactively swallowed up too many receptors, leaving few at the surface. Unfortunately, it's possible to over-excite a cell to death, says Worley, and if the ...

A key antibody, IgG, links cells' capture and disposal of germs

... by which cells isolate and then kill invading microbes, viruses, and other antigens. In a process called phagocytosis, intruding germs are first swallowed up by amoeba-like white blood cells and stored in membrane pouches called phagosomes. These compartments then fuse with lysosomes, toxic cellular ...

Nano-devices hold promise for early-stage cancer detection

... They are miniature labs that can be swallowed like a pill, injected through a catheter, or woven into fabric. Their function is to screen for, detect, and potentially treat, cancer and other ...

Dinosaurs -- stones did not help with digestion

... what else were the dinosaurs' gastric stones used for? The researchers presume that they were accidentally eaten with their food or could have been swallowed on purpose to improve the intake of minerals. But if the stones did not help to crush vegetable food, the sauropods' digestive system must have used ...

Chocolate, wine, spicy foods may be OK for heartburn, Stanford study finds

... as chocolate and carbonated beverages) can reduce the pressure exerted by the esophageal sphincter, the control valve that keeps the food you've swallowed and your digestive acids down in your stomach, where they belong. Heartburn is most commonly caused when the esophageal sphincter relaxes more ...

Chemists identify immune system mechanism for methamphetamine binges

... over-the-counter drug ingredients, particularly cold and allergy medicines. Available as a powder or crystal, the drug can be injected, snorted, swallowed and smoked to provide users with a sense of euphoria. Drug effects can last for up to 12 hours. Frequent use is associated with serious health ...
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