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Jerome Gross
Jerome Gross (February 25, 1917 - January 27, 2014) was an American biologist and member of the National Academy of Sciences. His research at Harvard Medical School and the Massachusetts General Hospital in the 1950s helped launch the fields of collagen research. In 1969, Gross was promoted to Professor of Medicine at Harvard Medical School and named Biologist at the Massachusetts General Hospital. In the preceding decades, scientists from around the world traveled to his Developmental Biology Laboratory in the Department of Medicine at the Massachusetts General Hospital to study his work on collagen structure, wound healing, and limb regeneration. In 1987, Gross became Professor Emeritus of Medicine at Harvard Medical School. The following year, he became the first Paul Klemperer Award recipient at the New York Academy of Medicine. In 1995 he was awarded the Lifetime Achievement Award by The Wound Healing Society. Gross spent over 60 years on the faculty of Harvard and in the ...
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Harvard Medical School
Harvard Medical School (HMS) is the medical school of Harvard University and is located in the Longwood Medical and Academic Area, Longwood Medical Area in Boston, Massachusetts. Founded in 1782, HMS is the third oldest medical school in the United States. It provides patient care, medical education, and research training through its 15 clinical affiliates and research institutes, including Massachusetts General Hospital (MGH), Boston Children's Hospital, Dana–Farber Cancer Institute, Brigham and Women's Hospital, Beth Israel Deaconess Medical Center, Mount Auburn Hospital, McLean Hospital, Cambridge Health Alliance, The Baker Center for Children and Families, Spaulding Rehabilitation Hospital, and others. Harvard Medical School also partners with newer entities such as Harvard Catalyst, Broad Institute , Broad Institute of MIT and Harvard, Harvard Stem Cell Institute, the Center for Primary Care, and Wyss Institute for Biologically Inspired Engineering. History Harvard ...
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Lathyrism
Lathyrism is a condition caused by eating certain legumes of the genus ''Lathyrus''. There are three types of lathyrism: ''neurolathyrism'', ''osteolathyrism'', and ''angiolathyrism'', all of which are incurable, differing in their symptoms and in the body tissues affected. Neurolathyrism is the type associated with the consumption of legumes in the genus ''Lathyrus'' that contain the toxin oxalyldiaminopropionic acid (ODAP). ODAP ingestion results in motor neuron death. The result is paralysis and muscle atrophy of the lower limbs. Osteolathyrism, a different type of lathyrism, affects the connective tissues, not the motor neurons. Osteolathyrism results from the ingestion of ''Lathyrus odoratus'' seeds (sweet peas), and is often referred to as odoratism. It is caused by a different toxin, beta-aminopropionitrile, which affects the linking of the subunits of collagen, a major structural protein found in connective tissue. A third type of lathyrism is angiolathyrism, which is sim ...
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Helen Hay Whitney Foundation
The Helen Hay Whitney Foundation, established in New York in 1943 by Joan Whitney Payson in cooperation with the estate planning of her mother, Helen Hay Whitney (1875–1944), awards the "Helen Hay Whitney Postdoctoral Fellowship" for support postdoctoral researcher, postdoctoral research in the biomedical sciences. Currently the Foundation awards 20 fellowships per year. The award is one of four highly competitive postdoctoral awards in the life sciences,''JCC Fund Newsletter'', 2007. and many of North America's leading scientists and medical researchers were supported in the early stages of their career by the Whitney Foundation. Members of the Scientific Advisory Committee have included: * Barbara J. Meyer, Barbara Meyer * Erin O'Shea * Matthew Scharff * Daniel Kahne * Thomas Jessell * Stephen C. Harrison * Julie Theriot * Jonathan Weissman * S. Lawrence Zipursky Notable fellows have included: * Eric J. Ackerman * David Agard * Ronald A. Albright * David J. Anderson * Karen ...
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American Heart Association
The American Heart Association (AHA) is a nonprofit organization in the United States that funds cardiovascular medical research, educates consumers on healthy living and fosters appropriate Heart, cardiac care in an effort to reduce disability and deaths caused by cardiovascular disease and stroke. They are known for publishing guidelines on cardiovascular disease and prevention, standards on basic life support, advanced cardiac life support (ACLS), pediatric advanced life support (PALS), and in 2014 issued the first guidelines for preventing strokes in women. The American Heart Association is also known for operating a number of highly visible public service campaigns starting in the 1970s, and also operates several fundraising events. Originally formed in Chicago in 1924, the American Heart Association is currently headquartered in Dallas, Texas. It was originally headquartered in New York City. The American Heart Association is a national voluntary health agency. The mission ...
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Journal Of Histochemistry And Cytochemistry
The ''Journal of Histochemistry and Cytochemistry'' is a peer-reviewed scientific journal of cell biology established in 1953. It covers research in the structure and function of cells, tissues, and organs as well as components of development, differentiation, and disease, as well as microscopy and imaging techniques. The journal is the official publication of The Histochemical Society and is published by SAGE Publications. The editor-in-chief as of January 1, 2016 is Stephen M. Hewitt of the National Cancer Institute, National Institutes of Health, in Bethesda Maryland, USA. The immediate past editor-in-chief is John R. Couchman (University of Copenhagen). The journal is published online and in print monthly. Journal content is available for free after twelve months. History The Histochemical Society was founded in 1950 and at its 1951 meeting a committee tasked with creating a journal for histochemistry was appointed. The founding editor was Ralph D. Lillie and the first issue of ...
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National Research Council (United States)
The National Academies of Sciences, Engineering, and Medicine (NASEM), also known as the National Academies, is a congressionally chartered organization that serves as the collective scientific national academy of the United States. The name is used interchangeably in two senses: (1) as an umbrella term or parent organization for its three sub-divisions that operate as quasi-independent honorific learned society member organizations known as the National Academy of Sciences (NAS), the National Academy of Engineering (NAE), and the National Academy of Medicine (NAM); and (2) as the brand for studies and reports issued by the unified operating arm of the three academies originally known as the National Research Council (NRC). The National Academies also serve as public policy advisors, research institutes, think tanks, and public administration consultants on issues of public importance or on request by the government. The National Research Council, National Academy of Engineeri ...
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Limb Regeneration
Regeneration in biology is the process of renewal, restoration, and tissue growth that makes genomes, cells, organisms, and ecosystems resilient to natural fluctuations or events that cause disturbance or damage. Every species is capable of regeneration, from bacteria to humans. Regeneration can either be complete where the new tissue is the same as the lost tissue, or incomplete after which the necrotic tissue becomes fibrotic. At its most elementary level, regeneration is mediated by the molecular processes of gene regulation and involves the cellular processes of cell proliferation, morphogenesis and cell differentiation. Regeneration in biology, however, mainly refers to the morphogenic processes that characterize the phenotypic plasticity of traits allowing multi-cellular organisms to repair and maintain the integrity of their physiological and morphological states. Above the genetic level, regeneration is fundamentally regulated by asexual cellular processes. Regeneratio ...
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Embryogenesis
An embryo ( ) is the initial stage of development for a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell. The resulting fusion of these two cells produces a single-celled zygote that undergoes many cell divisions that produce cells known as blastomeres. The blastomeres (4-cell stage) are arranged as a solid ball that when reaching a certain size, called a morula, (16-cell stage) takes in fluid to create a cavity called a blastocoel. The structure is then termed a blastula, or a blastocyst in mammals. The mammalian blastocyst hatches before implantating into the endometrial lining of the womb. Once implanted the embryo will continue its development through the next stages of gastrulation, neurulation, and organogenesis. Gastrulation is the formation of the three germ layers that will form all of the different parts o ...
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Hyaluronidase
Hyaluronidases are a family of enzymes that catalyse the degradation of hyaluronic acid. Karl Meyer classified these enzymes in 1971, into three distinct groups, a scheme based on the enzyme reaction products. The three main types of hyaluronidases are two classes of eukaryotic endoglycosidase hydrolases and a prokaryotic lyase-type of glycosidase. In humans, there are five functional hyaluronidases: HYAL1, HYAL2, HYAL3, HYAL4 and HYAL5 (also known as SPAM1 or PH-20); plus a pseudogene, HYAL6 (also known as HYALP1). The genes for HYAL1-3 are clustered in chromosome 3, while HYAL4-6 are clustered in chromosome 7. HYAL1 and HYAL2 are the major hyaluronidases in most tissues. GPI-anchored HYAL2 is responsible for cleaving high-molecular weight hyaluronic acid, which is mostly bound to the CD44 receptor. The resulting hyaluronic acid fragments of variable size are then further hydrolyzed by HYAL1 after being internalized into endo-lysosomes; this generates hyaluronic acid ...
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Hyaluronic Acid
Hyaluronic acid (; abbreviated HA; conjugate base hyaluronate), also called hyaluronan, is an anionic, nonsulfated glycosaminoglycan distributed widely throughout connective, epithelial, and neural tissues. It is unique among glycosaminoglycans as it is non-sulfated, forms in the plasma membrane instead of the Golgi apparatus, and can be very large: human synovial HA averages about per molecule, or about 20,000 disaccharide monomers, while other sources mention . Medically, hyaluronic acid is used to treat osteoarthritis of the knee and dry eye, for wound repair, and as a cosmetic filler. The average 70 kg (150 lb) person has roughly 15 grams of hyaluronan in the body, one third of which is turned over (i.e., degraded and synthesized) per day. As one of the chief components of the extracellular matrix, it contributes significantly to cell proliferation and migration, and is involved in the progression of many malignant tumors. Hyaluronic acid is also a ...
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Fibrillogenesis
Fibrillogenesis is the development of fine fibrils normally present in collagen fibers of connective tissue. It is derived from the New Latin ''fibrilla'' (meaning fibrils, or pertaining to fibrils) and Greek ''genesis'' (to create, the process by which something is created). The assembly of collagen fibrils, fibrillogenesis appears to be a self-assembly process although there is much speculation about the specifics of the mechanism through which the body produces collagen fibrils. In the body, collagen fibrils are composed of several types of collagen as well as macromolecules. Type I collagen is the most abundant structural macromolecule within the vertebrate body and also represents the most abundant collagen found within various collagen fibrils There are immense differences in the types of collagen fibrils that exist within the body. For instance, fibrils within the tendon vary in width and are banded into aggregates that form fibril bundles that resist forces of tension within ...
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Wound Healing
Wound healing refers to a living organism's replacement of destroyed or damaged tissue by newly produced tissue. In undamaged skin, the epidermis (surface, epithelial layer) and dermis (deeper, connective layer) form a protective barrier against the external environment. When the barrier is broken, a regulated sequence of biochemical events is set into motion to repair the damage. This process is divided into predictable phases: blood clotting (hemostasis), inflammation, tissue growth ( cell proliferation), and tissue remodeling (maturation and cell differentiation). Blood clotting may be considered to be part of the inflammation stage instead of a separate stage. The wound-healing process is not only complex but fragile, and it is susceptible to interruption or failure leading to the formation of non-healing chronic wounds. Factors that contribute to non-healing chronic wounds are diabetes, venous or arterial disease, infection, and metabolic deficiencies of old age.Enoch, ...
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