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Ilya Ilyich Mechnikov, also spelled Élie Metchnikoff, was a Russian zoologist best known for his pioneering research in immunology. He and Paul Ehrlich were jointly awarded the 1908 Nobel Prize in Physiology or Medicine "in recognition of their work on immunity".
Phagocytosis is the process by which a cell uses its plasma membrane to engulf a large particle, giving rise to an internal compartment called the phagosome. It is one type of endocytosis. A cell that performs phagocytosis is called a phagocyte.
Phagocytes are cells that protect the body by ingesting harmful foreign particles, bacteria, and dead or dying cells. Their name comes from the Greek phagein, "to eat" or "devour", and "-cyte", the suffix in biology denoting "cell", from the Greek kutos, "hollow vessel". They are essential for fighting infections and for subsequent immunity. Phagocytes are important throughout the animal kingdom and are highly developed within vertebrates. One litre of human blood contains about six billion phagocytes. They were discovered in 1882 by Ilya Ilyich Mechnikov while he was studying starfish larvae. Mechnikov was awarded the 1908 Nobel Prize in Physiology or Medicine for his discovery. Phagocytes occur in many species; some amoebae behave like macrophage phagocytes, which suggests that phagocytes appeared early in the evolution of life.
Granulocytes are cells in the innate immune system characterized by the presence of specific granules in their cytoplasm. Such granules distinguish them from the various agranulocytes. Some types of granulocytes have varying shape of the nucleus ; any of these types may sometimes be called polymorphonuclear leukocytes. In most uses, the term polymorphonuclear leukocyte usually refers specifically to "neutrophil granulocytes", the most abundant of the granulocytes; the other types have fewer lobes or are mononuclear. Granulocytes are produced via granulopoiesis in the bone marrow.
Pathophysiology – a convergence of pathology with physiology – is the study of the disordered physiological processes that cause, result from, or are otherwise associated with a disease or injury. Pathology is the medical discipline that describes conditions typically observed during a disease state, whereas physiology is the biological discipline that describes processes or mechanisms operating within an organism. Pathology describes the abnormal or undesired condition, whereas pathophysiology seeks to explain the functional changes that are occurring within an individual due to a disease or pathologic state.
In cellular biology, pinocytosis, otherwise known as fluid endocytosis and bulk-phase pinocytosis, is a mode of endocytosis in which small particles suspended in extracellular fluid are brought into the cell through an invagination of the cell membrane, resulting in a suspension of the particles within a small vesicle inside the cell. These pinocytotic vesicles then typically fuse with early endosomes to hydrolyze the particles.
An alveolar macrophage, pulmonary macrophage, is a type of macrophage, a professional phagocyte, found in the airways and at the level of the alveoli in the lungs, but separated from their walls.
The mannose receptor is a C-type lectin primarily present on the surface of macrophages, immature dendritic cells and liver sinusoidal endothelial cells, but is also expressed on the surface of skin cells such as human dermal fibroblasts and keratinocytes. It is the first member of a family of endocytic receptors that includes Endo180 (CD280), M-type PLA2R, and DEC-205 (CD205).
Macrophage-1 antigen is a complement receptor ("CR3") consisting of CD11b and CD18.
Ralph Marvin Steinman was a Canadian physician and medical researcher at Rockefeller University, who in 1973 discovered and named dendritic cells while working as a postdoctoral fellow in the laboratory of Zanvil A. Cohn, also at Rockefeller University. Steinman was one of the recipients of the 2011 Nobel Prize in Physiology or Medicine.
Intercellular adhesion molecule 3 (ICAM3) also known as CD50, is a protein that in humans is encoded by the ICAM3 gene. The protein is constitutively expressed on the surface of leukocytes, which are also called white blood cells and are part of the immune system. ICAM3 mediates adhesion between cells by binding to specific integrin receptors. It plays an important role in the immune cell response through its facilitation of interactions between T cells and dendritic cells, which allows for T cell activation. ICAM3 also mediates the clearance of cells undergoing apoptosis by attracting and binding macrophages, a type of cell that breaks down infected or dying cells through a process known as phagocytosis, to apoptotic cells.
A non-specific immune cell is an immune cell that responds to many antigens, not just one antigen. Non-specific immune cells function in the first line of defense against infection or injury. The innate immune system is always present at the site of infection and ready to fight the bacteria; it can also be referred to as the "natural" immune system. The cells of the innate immune system do not have specific responses and respond to each foreign invader using the same mechanism.
A siderophage is a hemosiderin-containing macrophage. Heart failure cells are siderophages generated in the alveoli of the lungs of people with left heart failure or chronic pulmonary edema, when the high pulmonary blood pressure causes red blood cells to pass through the vascular wall. Siderophages are not specific of heart failure. They are present wherever red blood cells encounter macrophages, such as pulmonary hemorrhage.
Karl Maramorosch was an Austrian-born American virologist, entomologist, and plant pathologist. A centenarian and polyglot, he conducted research on viruses, mycoplasmas, rickettsiae, and other micro-organisms; and their transmission to plants through insect vectors in many parts of the world. He is the co-author of a textbook on techniques in virology and is the author of numerous papers on the biology and ecology of plant viruses, their hosts, and vectors. He received the Wolf Prize in Agriculture in 1980 for his contribution to the study of crop pathogens.
Harvey Franklin Lodish is a molecular and cell biologist, professor at the Massachusetts Institute of Technology (MIT), Founding Member of the Whitehead Institute for Biomedical Research, and lead author of the textbook Molecular Cell Biology. Lodish's research focused on cell surface proteins and other important areas at the interface between molecular cell biology and medicine.
Zanvil Alexander Cohn was a cell biologist and immunologist who upon his death was described by The New York Times as being "in the forefront of current studies of the body's defenses against infection.", professor at Rockefeller University. There Cohn had been the Henry G. Kunkel Professor for seven years. Cohn was senior physician at the university as well as vice president for medical affairs. Until two years before his death, he also served as principal investigator of the Irvington Institute for Medical Research. Although Cohn never won the Nobel Prize, Ralph M. Steinman, with whom he ran a laboratory at Rockefeller University for many years, was named to win the 2011 Nobel Prize in Physiology or Medicine for the work on dendritic cells done in their lab, eighteen years after Cohn's death.
Jennifer Lea Stow is deputy director (research), NHMRC Principal Research Fellow and head of the Protein Trafficking and Inflammation laboratory at the Institute for Molecular Bioscience (IMB), The University of Queensland, Australia. She was awarded her PhD from Monash University in Melbourne in 1982. As a Fogarty International Fellow, she completed postdoctoral training at Yale University School of Medicine (US) in the Department of Cell Biology. She was then appointed to her first faculty position as an assistant professor at Harvard University in the Renal Unit, Departments of Medicine and Pathology at the Massachusetts General Hospital in Boston. At the end of 1994 she returned to Australia as a Wellcome Trust Senior International Medical Research fellow at The University of Queensland where her work has continued. Stow sits on national and international peer review and scientific committees and advisory boards. She has served as head of IMB's Division of Molecular Cell Biology, and in 2008 she was appointed as deputy director (research).
Sandip Kumar Basu is an Indian molecular biologist and the holder of the J. C. Bose Chair of the National Academy of Sciences, India, who is credited with innovations in the treatment protocols of leishmaniasis, tuberculosis, viral infections, multidrug resistant cancer and arterosclerosis. He was honored by the Government of India, in 2001, with the fourth highest Indian civilian award of Padma Shri.
Alberto Mantovani is an Italian physician and immunologist. He is Scientific Director of Istituto Clinico Humanitas, President and Founder of the Fondazione Humanitas per la Ricerca, and Professor of Pathology at the State University of Milan. He is known for his works in the roles of the immune system in the development of cancer. His research on tumor-associated macrophages established inflammation as one of the causes of cancer. He was the first to identify monocyte chemotactic protein - 1 / CCL2 in 1983, and PTX3 in 1997. His works revealed the existence of decoy receptors in cell-signalling. He has been the most cited scientist in Italy, and one of the ten most cited immunologists worldwide.
George Bellamy Mackaness was an Australian professor of microbiology, immunologist, writer and administrator, who researched and described the life history of the macrophage. He showed that by infecting mice with intracellular bacteria, macrophages could be activated to attack other bacteria, triggering further research on "macrophage activation", a term he has come to be associated with.
References
- ↑ Austyn, Jonathan M. (1980). Monoclonal antibodies against the murine macrophage. ox.ac.uk (DPhil thesis). University of Oxford. OCLC 556713598. EThOS uk.bl.ethos.237663.
- ↑ http://www.debretts.com/people/biographies/browse/g/3215/Siamon+GORDON.aspx [ dead link ]
- ↑ "Siamon Gordon - title page". Archived from the original on 23 April 2012. Retrieved 21 December 2011.
- ↑ "CIDRI". Archived from the original on 26 April 2012. Retrieved 21 December 2011.
- ↑ "Siamon Gordon | Faculty Member | Faculty Opinions".
- ↑ Honey, Karen (1 February 2010). "Siamon Gordon on the challenges of retirement". The Journal of Clinical Investigation. 120 (2): 398–399. doi:10.1172/JCI42070. ISSN 0021-9738. PMC 2810092 .
- ↑ "Scientific Advisory Board « American Asthma Foundation". www.americanasthmafoundation.org. Archived from the original on 13 May 2009.
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