Nasal spray clears proteins linked to Alzheimer's, study finds
Scientists in America have developed a nasal spray that can remove proteins in the brain associated with Alzheimer's disease—at least, in mice.
8 hours ago
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Scientists in America have developed a nasal spray that can remove proteins in the brain associated with Alzheimer's disease—at least, in mice.
8 hours ago
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1
Scientists have uncovered that "gene misbehavior"—where genes are active when they were expected to be switched off—is a surprisingly common phenomenon in the healthy human population.
Jul 24, 2024
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Research on thousands of proteins measured from a drop of blood demonstrates the ability of proteins to predict the onset of many diverse diseases.
Jul 22, 2024
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The 20th century saw humanity develop in leaps and bounds, and without a doubt one of the most revolutionary advances was oral contraceptives, more commonly known as "the pill."
Jul 17, 2024
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A world-first study has found low-dose aspirin may treat flu-induced blood vessel inflammation, creating better blood flow to the placenta during pregnancy. The study, "Low dose aspirin prevents endothelial dysfunction in ...
Jul 3, 2024
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When it comes to managing blood sugar levels, most people think about counting carbs. But new research from the University of British Columbia shows that, for some, it may be just as important to consider the proteins and ...
Jul 2, 2024
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Oncologists use biopsy and imaging techniques to diagnose and monitor tumor diseases and assess treatment success. Researchers at the University of Zurich and the University Hospital Zurich have further developed an advanced ...
Jul 1, 2024
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Researchers have developed a "blood vessel-on-a-chip" for heart disease with the potential to change the future of drug testing and development. The technology could also reduce our reliance on animal testing.
Jul 1, 2024
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A study performed in mice has uncovered a potential new tool to combat the escalating issue of childhood obesity. The research suggests that a simple dietary change, in the form of a fish oil supplement taken by fathers, ...
Jun 29, 2024
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Aicardi-Goutieres syndrome is a rare disease that can trigger dementia in children. Associate Professor Markus Hofer and colleagues in the U.K. are focusing on treatments in the blood vessels in the brain to combat AGS.
Jun 26, 2024
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Blood is a specialized bodily fluid that delivers necessary substances to the body's cells — such as nutrients and oxygen — and transports waste products away from those same cells.
In vertebrates, it is composed of blood cells suspended in a liquid called blood plasma. Plasma, which comprises 55% of blood fluid, is mostly water (90% by volume), and contains dissolved proteins, glucose, mineral ions, hormones, carbon dioxide (plasma being the main medium for excretory product transportation), platelets and blood cells themselves. The blood cells present in blood are mainly red blood cells (also called RBCs or erythrocytes) and white blood cells, including leukocytes and platelets. The most abundant cells in vertebrate blood are red blood cells. These contain hemoglobin, an iron-containing protein, which facilitates transportation of oxygen by reversibly binding to this respiratory gas and greatly increasing its solubility in blood. In contrast, carbon dioxide is almost entirely transported extracellularly dissolved in plasma as bicarbonate ion.
Vertebrate blood is bright-red when its hemoglobin is oxygenated. Some animals, such as crustaceans and mollusks, use hemocyanin to carry oxygen, instead of hemoglobin. Insects and some molluscs use a fluid called hemolymph instead of blood, the difference being that hemolymph is not contained in a closed circulatory system. In most insects, this "blood" does not contain oxygen-carrying molecules such as hemoglobin because their bodies are small enough for their tracheal system to suffice for supplying oxygen.
Jawed vertebrates have an adaptive immune system, based largely on white blood cells. White blood cells help to resist infections and parasites. Platelets are important in the clotting of blood. Arthropods, using hemolymph, have hemocytes as part of their immune system.
Blood is circulated around the body through blood vessels by the pumping action of the heart. In animals having lungs, arterial blood carries oxygen from inhaled air to the tissues of the body, and venous blood carries carbon dioxide, a waste product of metabolism produced by cells, from the tissues to the lungs to be exhaled.
Medical terms related to blood often begin with hemo- or hemato- (also spelled haemo- and haemato-) from the Ancient Greek word αἶμα (haima) for "blood". In terms of anatomy and histology, blood is considered a specialized form of connective tissue, given its origin in the bones and the presence of potential molecular fibers in the form of fibrinogen.
This text uses material from Wikipedia, licensed under CC BY-SA