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Pericyte

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activity increases local blood flow by inducing pericytes to dilate capillaries before upstream arteriole dilation occurs. This area is controversial, with a 2015 study claiming that pericytes do not express contractile proteins and are not capable of contraction in vivo, although the latter paper has been criticised for using a highly unconventional definition of pericyte which explicitly excludes contractile pericytes. It appears that different signaling pathways regulate the constriction of capillaries by pericytes and of arterioles by smooth muscle cells. Recent studies on rats have found such a signaling pathway in which after spinal cord injury and induced hypoxia below the injury, there is excess activity of monoamine receptors on pericytes which locally constricts capillaries and reduces blood flow to ischemic levels.
594: 739:. It has been proposed that a subtype of pericytes participates in this scarring in a glial-independent manner. Through lineage tracking studies, these subtype of pericytes were followed after stroke, revealing that they contribute to the glial scar by differentiating into myofibroblasts and depositing extracellular matrix. However, this remains controversial, as more recent studies suggest that the cell type followed in these scar studies is likely to be not pericytes, but fibroblasts. 212: 605:
individuals, though cases have been found in children. Hemangiopericytoma is caused by the excessive layering of sheets of pericytes around improperly formed blood vessels. Diagnosis of this tumor is difficult because of the inability to distinguish pericytes from other types of cells using light microscopy. Treatment may involve surgical removal and radiation therapy, depending on the level of bone penetration and stage in the tumor's development.
289: 29: 723:. Angiopoietin 2 can act as an antagonist to Tie-2, destabilizing the endothelial cells, which results in less endothelial cell and pericyte interaction. This occasionally leads to the formation of tumors. Similar to the inhibition of the PDGF pathway, angiopoietin 2 reduces levels of pericytes, leading to diabetic retinopathy. 617:. Studies have found that pericytes are essential in diabetic individuals to protect the endothelial cells of retinal capillaries. With the loss of pericytes, microaneurysms form in the capillaries. In response, the retina either increases its vascular permeability, leading to swelling of the eye through a 473:
endothelial cells as well as astrocytes, the pericytes grouped into structures that resembled capillaries. Furthermore, when the experimental group contained all of the following with the exception of pericytes, the endothelial cells would undergo apoptosis. It was thus concluded that pericytes must
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Immunohistochemical studies of human tissue from Alzheimer's disease and amyotrophic lateral sclerosis show pericyte loss and breakdown of the blood-brain barrier. Pericyte-deficient mouse models (which lack genes encoding steps in the PDGFB:PDGFRB signalling cascade) and have an Alzheimer's-causing
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molecules facilitate communication between pericytes and endothelial cells separated by the basement membrane. Pericytes can also form direct connections with neighboring cells by forming peg and socket arrangements in which parts of the cells interlock, similar to the gears of a clock. At these
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Studies have found that pericyte loss in the adult and aging brain leads to the disruption of proper cerebral perfusion and maintenance of the blood–brain barrier, which causes neurodegeneration and neuroinflammation. The apoptosis of pericytes in the aging brain may be the result of a failure in
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Increasing evidence suggests that pericytes can regulate blood flow at the capillary level. For the retina, movies have been published showing that pericytes constrict capillaries when their membrane potential is altered to cause calcium influx, and in the brain it has been reported that neuronal
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have physiological differences, correlated with immunophenotypic profiles by Takahashi et al. During the early proliferative phase (0–12 months) the tumors express proliferating cell nuclear antigen (pericytesna), vascular endothelial growth factor (VEGF), and type IV collagenase, the former two
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Because of their crucial role in maintaining and regulating endothelial cell structure and blood flow, abnormalities in pericyte function are seen in many pathologies. They may either be present in excess, leading to diseases such as hypertension and tumor formation, or in deficiency, leading to
444:. However, whether these cells differentiate into each other is an outstanding question in the field. Pericytes' regenerative capacity is affected by aging. Such versatility is useful, as they actively remodel blood vessels throughout the body and can thereby blend homogeneously with the local 474:
be present to ensure the proper function of endothelial cells, and astrocytes must be present to ensure that both remain in contact. If not, then proper angiogenesis cannot occur. It has also been found that pericytes contribute to the survival of endothelial cells, as they secrete the protein
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is a rare vascular neoplasm, or abnormal growth, that may either be benign or malignant. In its malignant form, metastasis to the lungs, liver, brain, and extremities may occur. It most commonly manifests itself in the femur and proximal tibia as a bone sarcoma, and is usually found in older
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Aside from blood–brain barrier formation, pericytes also play an active role in its functionality. Animal models of developmental loss of pericytes show increased endothelial transcytosis, as well as skewed arterio-venous zonation, increased expression of leukocyte adhesion molecules and
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Pericytes are important in maintaining circulation. In a study involving adult pericyte-deficient mice, cerebral blood flow was diminished with concurrent vascular regression due to loss of both endothelia and pericytes. Significantly greater hypoxia was reported in the hippocampus of
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Vanlandewijck M, He L, Mäe MA, Andrae J, Ando K, Del Gaudio F, Nahar K, Lebouvier T, Laviña B, Gouveia L, Sun Y, Raschperger E, Räsänen M, Zarb Y, Mochizuki N, Keller A, Lendahl U, Betsholtz C (February 2018). "A molecular atlas of cell types and zonation in the brain vasculature".
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localized to both endothelium and pericytes, and the last to endothelium. The vascular markers CD31, von Willebrand factor (vWF), and smooth muscle actin (pericyte marker) are present during the proliferating and involuting phases, but are lost after the lesion is fully involuted.
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Maisonpierre PC, Suri C, Jones PF, Bartunkova S, Wiegand SJ, Radziejewski C, Compton D, McClain J, Aldrich TH, Papadopoulos N, Daly TJ, Davis S, Sato TN, Yancopoulos GD (July 1997). "Angiopoietin-2, a natural antagonist for Tie2 that disrupts in vivo angiogenesis".
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The emerging evidence (as of 2019) suggests that neural microvascular pericytes, under instruction from resident glial cells, are reprogrammed into interneurons and enrich local neuronal microcircuits. This response is amplified by concomitant angiogenesis.
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Communication between endothelial cells and pericytes is vital. Inhibiting the PDGF pathway leads to pericyte deficiency. This causes endothelial hyperplasia, abnormal junctions, and diabetic retinopathy. A lack of pericytes also causes an upregulation of
514:. This barrier is composed of endothelial cells and ensures the protection and functionality of the brain and central nervous system. It has been found that pericytes are crucial to the postnatal formation of this barrier. Pericytes are responsible for 2395:
Li, Yaqing; Lucas-Osma, Ana M.; Black, Sophie; Bandet, Mischa V.; Stephens, Marilee J.; Vavrek, Romana; Sanelli, Leo; Fenrich, Keith K.; Di Narzo, Antonio F.; Dracheva, Stella; Winship, Ian R.; Fouad, Karim; Bennett, David J. (June 2017).
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increases its flux, and intracellular sorbitol and fructose accumulate. This leads to osmotic imbalance, which results in cellular damage. The presence of high glucose levels also leads to the buildup of AGE's, which also damage cells.
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Gupta K, Kshirsagar S, Li W, Gui L, Ramakrishnan S, Gupta P, Law PY, Hebbel RP (March 1999). "VEGF prevents apoptosis of human microvascular endothelial cells via opposing effects on MAPK/ERK and SAPK/JNK signaling".
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signals and travel. Certain pericytes, known as microvascular pericytes, develop around the walls of capillaries and help to serve this function. Microvascular pericytes may not be contractile cells, as they lack
223:(CNS), pericytes wrap around the endothelial cells that line the inside of the capillary. These two types of cells can be easily distinguished from one another based on the presence of the prominent round 964:
Muhl, Lars; Genové, Guillem; Leptidis, Stefanos; Liu, Jianping; He, Liqun; Mocci, Giuseppe; Sun, Ying; Gustafsson, Sonja; Buyandelger, Byambajav; Chivukula, Indira V.; Segerstolpe, Åsa (December 2020).
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Armulik A, Genové G, Mäe M, Nisancioglu MH, Wallgard E, Niaudet C, He L, Norlin J, Lindblom P, Strittmatter K, Johansson BR, Betsholtz C (November 2010). "Pericytes regulate the blood-brain barrier".
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Pericytes stabilize and monitor the maturation of endothelial cells by means of direct communication between the cell membrane as well as through paracrine signaling. A deficiency of pericytes in the
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Mäe, Maarja A.; He, Liqun; Nordling, Sofia; Vazquez-Liebanas, Elisa; Nahar, Khayrun; Jung, Bongnam; Li, Xidan; Tan, Bryan C.; Chin Foo, Juat; Cazenave-Gassiot, Amaury; Wenk, Markus R. (2021-02-19).
2136:"Differing associations between Aβ accumulation, hypoperfusion, blood–brain barrier dysfunction and loss of PDGFRB pericyte marker in the precuneus and parietal white matter in Alzheimer's disease" 1177:
Hartmann, David A.; Berthiaume, Andrée-Anne; Grant, Roger I.; Harrill, Sarah A.; Koski, Tegan; Tieu, Taryn; McDowell, Konnor P.; Faino, Anna V.; Kelly, Abigail L.; Shih, Andy Y. (May 2021).
1522: 667:, pericytes constrict brain capillaries and then die, which may lead to a long-lasting decrease of blood flow and loss of blood–brain barrier function, increasing the death of nerve cells. 699:(PDGF) pathway signaling from endothelial cells recruits pericytes, so that pericytes can migrate to developing blood vessels. If this pathway is blocked, it leads to pericyte deficiency. 597:
Image of a solitary fibrous tumour that is most likely a hemangiopericytoma. It surrounds a staghorn-shaped blood vessel, which results from the arrangement of pericytes around the vessel
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Thurston G, Suri C, Smith K, McClain J, Sato TN, Yancopoulos GD, McDonald DM (December 1999). "Leakage-resistant blood vessels in mice transgenically overexpressing angiopoietin-1".
3073:"Tumor-derived vascular endothelial growth factor up-regulates angiopoietin-2 in host endothelium and destabilizes host vasculature, supporting angiogenesis in ovarian cancer" 651:) is released from endothelial cells in brain vasculature and binds to the receptor PDGFRB on pericytes, initiating their proliferation and investment in the vasculature. 243:
can be formed, which allow the pericytes and neighboring cells to exchange ions and other small molecules. Important molecules in these intercellular connections include
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Farahani, Ramin M.; Rezaei-Lotfi, Saba; Simonian, Mary; Xaymardan, Munira; Hunter, Neil (2019). "Neural microvascular pericytes contribute to human adult neurogenesis".
502:(ERK-1, also known as MAPK3), which sustains cell survival over time, and inhibition of stress-activated protein kinase/c-jun-NH2 kinase, which also promotes apoptosis. 2814:"PDGF, TGF-beta, and heterotypic cell-cell interactions mediate endothelial cell-induced recruitment of 10T1/2 cells and their differentiation to a smooth muscle fate" 372:-induced injury, type-1 pericytes give rise to adipogenic cells only in response to glycerol injection and type-2 become myogenic in response to both types of 108: 773: 361:(PDGFRβ+CD146+Nes-) and type-2 characterized by positive expression for nestin (PDGFRβ+CD146+Nes+). While both types are able to proliferate in response to 680:
Endothelial cells and pericytes are interdependent and failure of proper communication between the two cell types can lead to numerous human pathologies.
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of the eye. The end result is reduction or loss of vision. While it is unclear why pericytes are lost in diabetic patients, one hypothesis is that toxic
2773:"Defective paracrine signalling by TGFbeta in yolk sac vasculature of endoglin mutant mice: a paradigm for hereditary haemorrhagic telangiectasia" 1526: 1239:"Regional Blood Flow in the Normal and Ischemic Brain Is Controlled by Arteriolar Smooth Muscle Cell Contractility and Not by Capillary Pericytes" 163:. The morphology, distribution, density and molecular fingerprints of pericytes vary between organs and vascular beds. Pericytes help to maintain 2896:
Bjarnegård M, Enge M, Norlin J, Gustafsdottir S, Fredriksson S, Abramsson A, Takemoto M, Gustafsson E, Fässler R, Betsholtz C (April 2004).
3391: 2193:"Deficiency in Mural Vascular Cells Coincides with Blood-Brain Barrier Disruption in Alzheimer's Disease: Pericytes in Alzheimer's Disease" 1986: 655:
mutation have exacerbated Alzheimer's-like pathology compared to mice with normal pericyte coverage and an Alzheimer's-causing mutation.
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Winkler, Ethan A.; Sengillo, Jesse D.; Sullivan, John S.; Henkel, Jenny S.; Appel, Stanley H.; Zlokovic, Berislav V. (January 2013).
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Halliday, Matthew R; Rege, Sanket V; Ma, Qingyi; Zhao, Zhen; Miller, Carol A; Winkler, Ethan A; Zlokovic, Berislav V (January 2016).
967:"Single-cell analysis uncovers fibroblast heterogeneity and criteria for fibroblast and mural cell identification and discrimination" 613:
The retina of diabetic individuals often exhibits loss of pericytes, and this loss is a characteristic factor of the early stages of
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Aside from creating and remodeling blood vessels, pericytes have been found to protect endothelial cells from death via apoptosis or
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Hall CN, Reynell C, Gesslein B, Hamilton NB, Mishra A, Sutherland BA, O'Farrell FM, Buchan AM, Lauritzen M, Attwell D (April 2014).
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Both pericytes and endothelial cells share a basement membrane where a variety of intercellular connections are made. Many types of
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Soderblom C, Luo X, Blumenthal E, Bray E, Lyapichev K, Ramos J, Krishnan V, Lai-Hsu C, Park KK, Tsoulfas P, Lee JK (August 2013).
526:(which can damage the formation of the barrier) and by reducing the expression of molecules that increase vascular permeability. 711:
that promote N-cadherin trafficking to endothelial membranes. This trafficking strengthens endothelial contacts with pericytes.
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Sagare, Abhay; Bell, Robert; Zhao, Zhen; Ma, Qingyi; Winkler, Ethan; Ramanathan, Anita; Zlokovic, Berislav (13 December 2013).
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Sengillo, Jesse D.; Winkler, Ethan A.; Walker, Corey T.; Sullivan, John S.; Johnson, Mahlon; Zlokovic, Berislav V. (May 2013).
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Göritz C, Dias DO, Tomilin N, Barbacid M, Shupliakov O, Frisén J (July 2011). "A pericyte origin of spinal cord scar tissue".
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amongst endothelial cells. Furthermore, they allow the formation of the blood–brain barrier by inhibiting the effects of CNS
2079:"Accelerated pericyte degeneration and blood–brain barrier breakdown in apolipoprotein E4 carriers with Alzheimer's disease" 479: 3071:
Zhang L, Yang N, Park JW, Katsaros D, Fracchioli S, Cao G, O'Brien-Jenkins A, Randall TC, Rubin SC, Coukos G (June 2003).
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isoforms, structures that are common amongst other contractile cells. These cells communicate with endothelial cells via
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microaneurysms. Loss or dysfunction of pericytes is also theorized to contribute to neurodegenerative diseases such as
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Carvalho RL, Jonker L, Goumans MJ, Larsson J, Bouwman P, Karlsson S, Dijke PT, Arthur HM, Mummery CL (December 2004).
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Hammes HP, Lin J, Wagner P, Feng Y, Vom Hagen F, Krzizok T, Renner O, Breier G, Brownlee M, Deutsch U (April 2004).
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are of two distinct populations, each with its own role. The first pericyte subtype (Type-1) can differentiate into
318: 3384: 2898:"Endothelium-specific ablation of PDGFB leads to pericyte loss and glomerular, cardiac and placental abnormalities" 115: 33: 1787:"Pericytes promote endothelial cell survival through induction of autocrine VEGF-A signaling and Bcl-w expression" 1414:"Modelling physiological and pathological conditions to study pericyte biology in brain function and dysfunction" 519: 401:, and in turn cause endothelial cells to proliferate or be selectively inhibited. If this process did not occur, 159:
of blood capillaries, where they communicate with endothelial cells by means of both direct physical contact and
2455:"Pericytes control key neurovascular functions and neuronal phenotype in the adult brain and during brain aging" 3104:"Angiopoietin-2 causes pericyte dropout in the normal retina: evidence for involvement in diabetic retinopathy" 3072: 696: 630: 314: 262:
composed of fibronectin can be found. These plaques facilitate the connection of the basement membrane to the
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is directly responsible for preventing apoptosis, it is believed to be responsible for modulating apoptotic
3358: 3377: 687:(TGF) signaling, which is mediated by endothelial cells. This is important for pericyte differentiation. 767: 487: 227:
of the pericyte compared to the flat elongated nucleus of the endothelial cells. Pericytes also project
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There are several pathways of communication between the endothelial cells and pericytes. The first is
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Hammes HP, Lin J, Renner O, Shani M, Lundqvist A, Betsholtz C, Brownlee M, Deutsch U (October 2002).
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communication between growth factors and receptors on pericytes. Platelet-derived growth factor B (
350: 299: 91: 79: 2594:"Diabetic retinopathy and diabetic macular edema: pathophysiology, screening, and novel therapies" 357:
cells while the other (Type-2) into muscle cells. Type-1 characterized by negative expression for
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Gerhardt H, Betsholtz C (October 2003). "Endothelial-pericyte interactions in angiogenesis".
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Rustenhoven, Justin; Smyth, Leon C.; Jansson, Deidre; Schweder, Patrick; Aalderink, Miranda;
692: 441: 1412:; Mee, Edward W.; Faull, Richard L. M.; Park, Thomas I.-H.; Dragunow, Mike (December 2018). 3764: 3253: 3152: 2939:"Sphingosine 1-phosphate receptor regulation of N-cadherin mediates vascular stabilization" 2646: 2398:"Pericytes impair capillary blood flow and motor function after chronic spinal cord injury" 1940: 1887: 1364: 1304: 978: 614: 421: 160: 2503: 1592:
Birbrair A, Zhang T, Wang ZM, Messi ML, Enikolopov GN, Mintz A, Delbono O (January 2013).
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Birbrair A, Zhang T, Wang ZM, Messi ML, Enikolopov GN, Mintz A, Delbono O (January 2013).
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that wrap around the capillary wall, allowing the cells to regulate capillary blood flow.
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Hellström M, Gerhardt H, Kalén M, Li X, Eriksson U, Wolburg H, Betsholtz C (April 2001).
2526: 2348:"Astrocytes mediate neurovascular signaling to capillary pericytes but not to arterioles" 1738:"Angiogenesis of the blood-brain barrier in vitro and the function of cerebral pericytes" 478:
during cellular crosstalk. Bcl-w is an instrumental protein in the pathway that enforces
3257: 3156: 2988:"Lack of pericytes leads to endothelial hyperplasia and abnormal vascular morphogenesis" 2650: 2453:
Bell RD, Winkler EA, Sagare AP, Singh I, LaRue B, Deane R, Zlokovic BV (November 2010).
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Pericytes are also associated with endothelial cell differentiation and multiplication,
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expression and discourages apoptosis. Although there is some speculation as to why
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Mishra A, Reynolds JP, Chen Y, Gourine AV, Rusakov DA, Attwell D (December 2016).
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Dore-Duffy, P. (2008). "Pericytes: Pluripotent cells of the blood brain barrier".
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exogenous proteins. This suggests that the cell type might have been derived from
3723: 3563: 3520: 3427: 2470: 1802: 1254: 495: 366: 84: 3049: 2569: 2552: 1609: 1179:"Brain capillary pericytes exert a substantial but slow influence on blood flow" 1104: 3708: 3651: 3525: 3444: 3120: 3103: 2689: 1876:"Pericytes are required for blood-brain barrier integrity during embryogenesis" 1661: 1194: 990: 805: 762: 688: 634: 515: 469:
N/pAPN that may help to promote angiogenesis. When this hormone was mixed with
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Paik JH, Skoura A, Chae SS, Cowan AE, Han DK, Proia RL, Hla T (October 2004).
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signaling is essential for maturation and stabilization of endothelial cells.
3748: 3728: 3718: 3686: 3530: 3505: 3326: 2421: 2314: 2265: 2159: 2151: 2102: 2037: 1545:"Skeletal muscle pericyte subtypes differ in their differentiation potential" 1439: 1202: 998: 618: 406: 3164: 1644:
Birbrair A, Zhang T, Wang ZM, Messi ML, Mintz A, Delbono O (December 2013).
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Hill RA, Tong L, Yuan P, Murikinati S, Gupta S, Grutzendler J (July 2015).
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Birbrair A, Zhang T, Wang ZM, Messi ML, Mintz A, Delbono O (January 2015).
813: 703:(S1P) signaling also aids in pericyte recruitment by communication through 633:(AGE) accumulate in the pericytes. Because of the build-up of glucose, the 452: 410: 398: 385: 263: 240: 228: 224: 192: 3057: 3003: 2847: 2829: 2701:. If this is an intentional citation to a retracted paper, please replace 2094: 1987:"Key to blood-brain barrier opens way for treating Alzheimer's and stroke" 1754: 1737: 1489: 1154: 1137: 950: 494:. Two biochemical mechanisms utilized by VEGF to accomplish this would be 3691: 3676: 3639: 3624: 3620: 1095:
Dore-Duffy P, Cleary K (2011). "Morphology and properties of pericytes".
829:"Pericytes at the intersection between tissue regeneration and pathology" 402: 248: 164: 148: 44: 40: 3655: 3592: 3274: 3265: 2954: 1952: 1899: 1594:"Skeletal muscle neural progenitor cells exhibit properties of NG2-glia" 1376: 1316: 1293:"Capillary pericytes regulate cerebral blood flow in health and disease" 510:
Pericytes play a crucial role in the formation and functionality of the
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A lineage relationship to other cell types has been proposed, including
175:, one of the organs with higher pericyte coverage, and also sustain the 2659: 2297:
Attwell D, Mishra A, Hall CN, O'Farrell FM, Dalkara T (February 2016).
2012:"Single-Cell Analysis of Blood-Brain Barrier Response to Pericyte Loss" 1961: 1871: 844: 736: 581: 437: 211: 168: 140: 36: 3318: 2914: 2897: 2789: 2772: 2208: 1785:
Franco M, Roswall P, Cortez E, Hanahan D, Pietras K (September 2011).
121: 3668: 3608: 3604: 3515: 3454: 3432: 3369: 3304: 433: 414: 389: 379: 184: 152: 2413: 2363: 1473:"Tumor angiogenesis: pericytes and maturation are not to be ignored" 1058: 731:
Usually, astrocytes are associated with the scarring process in the
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Gap cell junction created between two neighboring cells by connexin.
2635:"Pericyte loss influences Alzheimer-like neurodegeneration in mice" 720: 626: 556: 470: 425: 362: 252: 235: 270:, and the plasma membrane of the pericytes and endothelial cells. 2895: 878:"The role of pericytes in blood-vessel formation and maintenance" 462: 457: 429: 278: 3612: 3600: 3535: 3419: 3400: 3034: 1407: 1099:. Methods in Molecular Biology. Vol. 686. pp. 49–68. 708: 664: 560: 491: 475: 373: 188: 2296: 1353:"Bidirectional control of CNS capillary diameter by pericytes" 1176: 28: 3596: 3558: 3545: 2239: 2190: 2009: 648: 499: 394: 267: 203:
can cause increased permeability of the blood–brain barrier.
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Miners, J Scott; Schulz, Isabel; Love, Seth (January 2018).
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Peppiatt CM, Howarth C, Mobbs P, Attwell D (October 2006).
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displaying pericytes that are lining the outer surface of
3142: 2729: 2345: 354: 3242: 2985: 2860: 2553:"Pericytes and the pathogenesis of diabetic retinopathy" 1735: 1043:"Central nervous system pericytes in health and disease" 675: 2394: 1869: 1525:. University of Arizona Health Sciences. Archived from 2730:
Armulik A, Abramsson A, Betsholtz C (September 2005).
2452: 1643: 1591: 1542: 1236: 1135: 826: 3361: â€” Pericytes can be used for muscle regeneration 3070: 1138:"Current concepts of blood-brain barrier development" 963: 774:
List of human cell types derived from the germ layers
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pericyte-deficient mice as well as inflammation, and
2550: 1833: 3101: 2936: 1040: 155:throughout the body. Pericytes are embedded in the 2591: 2076: 1924: 1736:Ramsauer M, Krause D, Dermietzel R (August 2002). 1142:The International Journal of Developmental Biology 380:Angiogenesis and the survival of endothelial cells 3028: 2592:Ciulla TA, Amador AG, Zinman B (September 2003). 1692: 1464: 1090: 1088: 1086: 1041:Winkler EA, Bell RD, Zlokovic BV (October 2011). 3746: 2812:Hirschi KK, Rohovsky SA, D'Amore PA (May 1998). 2632: 2133: 1346: 1344: 1094: 490:and inhibiting activation of apoptosis-inducing 2889: 2140:Journal of Cerebral Blood Flow & Metabolism 2083:Journal of Cerebral Blood Flow & Metabolism 1650:American Journal of Physiology. Cell Physiology 1470: 409:could result. These types of pericyte can also 2979: 2546: 2544: 1083: 1036: 1034: 1032: 1030: 1028: 1026: 621:, or forms new vessels that permeate into the 542:through breakdown of the blood-brain barrier. 279:Skeletal muscle regeneration and fat formation 179:. These cells are also a key component of the 3385: 2854: 2764: 2303:Journal of Cerebral Blood Flow and Metabolism 1639: 1637: 1538: 1536: 1341: 641: 2805: 2723: 2290: 1286: 1284: 1282: 3095: 2585: 2541: 2339: 1023: 875: 317:. Unsourced material may be challenged and 3392: 3378: 3064: 2715:|...|intentional=yes}} 1634: 1533: 1136:Liebner S, Czupalla CJ, Wolburg H (2011). 791: 258:In some regions of the basement membrane, 27: 3273: 3219: 3119: 3011: 2962: 2930: 2913: 2837: 2788: 2747: 2668: 2658: 2609: 2568: 2478: 2446: 2429: 2371: 2322: 2273: 2216: 2167: 2110: 2045: 2027: 1960: 1907: 1810: 1753: 1669: 1617: 1568: 1498: 1488: 1447: 1429: 1384: 1324: 1279: 1262: 1210: 1153: 1097:The Blood-Brain and Other Neural Barriers 1066: 1006: 901: 852: 337:Learn how and when to remove this message 719:(VEGF), leading to vascular leakage and 592: 566: 210: 608: 16:Cells associated with capillary linings 3747: 3399: 505: 3373: 1232: 1230: 676:Endothelial and pericyte interactions 588: 924: 785: 315:adding citations to reliable sources 282: 183:, which includes endothelial cells, 2732:"Endothelial/pericyte interactions" 2524: 13: 2749:10.1161/01.RES.0000182903.16652.d7 1993:. October 14, 2010. Archived from 1227: 876:Bergers G, Song S (October 2005). 743:Contribution to adult neurogenesis 717:vascular endothelial growth factor 14: 3776: 3352: 2504:"Pericytes in Health and Disease" 2501: 500:extracellular regulatory kinase 1 3307:Journal of Comparative Neurology 287: 116:Anatomical terms of microanatomy 3298: 3236: 3187: 3136: 2626: 2518: 2495: 2388: 2233: 2184: 2127: 2070: 2003: 1863: 1827: 1778: 1729: 1686: 1585: 1515: 1401: 925:Sims, David E. (January 1986). 631:advanced glycation end-products 3212:10.1523/JNEUROSCI.2524-13.2013 1870:Daneman R, Zhou L, Kebede AA, 1471:Fakhrejahani E, Toi M (2012). 1170: 1129: 957: 918: 869: 820: 697:Platelet-derived growth factor 1: 2875:10.1126/science.286.5449.2511 2029:10.1161/CIRCRESAHA.120.317473 794:Current Pharmaceutical Design 779: 575: 545: 2471:10.1016/j.neuron.2010.09.043 1803:10.1182/blood-2011-01-331694 1255:10.1016/j.neuron.2015.06.001 943:10.1016/0040-8166(86)90026-1 770:caused by death of pericytes 707:. S1P sends signals through 572:neurodegenerative diseases. 488:signal transduction pathways 455:elements. It has been shown 206: 7: 3200:The Journal of Neuroscience 3050:10.1126/science.277.5322.55 2992:The Journal of Cell Biology 2818:The Journal of Cell Biology 2570:10.2337/diabetes.51.10.3107 1610:10.1016/j.yexcr.2012.09.008 1105:10.1007/978-1-60761-938-3_2 751: 726: 705:G protein-coupled receptors 670: 273: 10: 3781: 3121:10.2337/diabetes.53.4.1104 2690:10.1038/s41467-024-47285-6 2506:. Celesta Software Pvt Ltd 1837:Experimental Cell Research 1662:10.1152/ajpcell.00171.2013 1598:Experimental Cell Research 1195:10.1038/s41593-020-00793-2 991:10.1038/s41467-020-17740-1 806:10.2174/138161208784705469 685:transforming growth factor 642:Neurodegenerative diseases 3667: 3632: 3585: 3576: 3544: 3496: 3453: 3418: 3411: 2611:10.2337/diacare.26.9.2653 2258:10.1007/s00401-012-1039-8 1707:10.1007/s00441-003-0745-x 1561:10.1016/j.scr.2012.09.003 1431:10.1186/s12868-018-0405-4 894:10.1215/S1152851705000232 658: 461:that pericytes release a 114: 102: 90: 78: 66: 61: 56: 26: 21: 2527:"Solitary Fibrous Tumor" 2315:10.1177/0271678x15610340 2152:10.1177/0271678X17690761 1695:Cell and Tissue Research 351:skeletal striated muscle 3734:Circulatory anastomosis 3697:Internal elastic lamina 3488:Precapillary resistance 3165:10.1126/science.1203165 2943:Genes & Development 927:"The pericyte—A review" 701:Sphingosine-1-phosphate 580:The clinical phases of 255:and various integrins. 139:) are multi-functional 47:that are encircling an 3483:Precapillary sphincter 3359:www.stemcellsfreak.com 1849:10.1006/excr.1998.4359 733:central nervous system 598: 442:mesenchymal stem cells 405:and abnormal vascular 266:structure composed of 229:finger-like extensions 221:central nervous system 216: 201:central nervous system 3004:10.1083/jcb.153.3.543 2830:10.1083/jcb.141.3.805 2707:|...}} 2684:(Retracted, see 2639:Nature Communications 2299:"What is a pericyte?" 2246:Acta Neuropathologica 2095:10.1038/jcbfm.2015.44 1991:Karolinska Institutet 1755:10.1096/fj.01-0814fje 1155:10.1387/ijdb.103224sl 971:Nature Communications 596: 567:Clinical significance 214: 147:that wrap around the 2736:Circulation Research 2016:Circulation Research 1529:on 16 February 2017. 768:Diabetic retinopathy 615:diabetic retinopathy 609:Diabetic retinopathy 311:improve this section 239:interlocking sites, 3365:Diagram at udel.edu 3266:10.1038/nature25739 3258:2018Natur.554..475V 3157:2011Sci...333..238G 2955:10.1101/gad.1227804 2651:2013NatCo...4.2932S 2352:Nature Neuroscience 1953:10.1038/nature09522 1945:2010Natur.468..557A 1900:10.1038/nature09513 1892:2010Natur.468..562D 1490:10.1155/2012/261750 1477:Journal of Oncology 1377:10.1038/nature05193 1369:2006Natur.443..700P 1317:10.1038/nature13165 1309:2014Natur.508...55H 1183:Nature Neuroscience 1047:Nature Neuroscience 983:2020NatCo..11.3953M 520:vesicle trafficking 512:blood–brain barrier 506:Blood–brain barrier 465:known as pericytic 422:smooth muscle cells 195:of cellular debris 177:blood–brain barrier 161:paracrine signaling 37:electron micrograph 3644:Pulmonary arteries 3578:Circulatory system 2660:10.1038/ncomms3932 1549:Stem Cell Research 845:10.1042/CS20140278 758:Hemangiopericytoma 602:Hemangiopericytoma 599: 589:Hemangiopericytoma 217: 181:neurovascular unit 97:H3.09.02.0.02006 3755:Contractile cells 3742: 3741: 3663: 3662: 3572: 3571: 3319:10.1002/cne.24565 3252:(7693): 475–480. 2915:10.1242/dev.01080 2790:10.1242/dev.01529 2358:(12): 1619–1627. 2209:10.1111/bpa.12004 1874:(November 2010). 1656:(11): C1098–113. 1114:978-1-60761-937-6 1053:(11): 1398–1405. 663:In conditions of 623:vitreous membrane 349:Pericytes in the 347: 346: 339: 171:functions in the 157:basement membrane 149:endothelial cells 135:(formerly called 130: 129: 125: 45:endothelial cells 3772: 3682:Microcirculation 3583: 3582: 3554:Lymphatic vessel 3511:Superficial vein 3416: 3415: 3394: 3387: 3380: 3371: 3370: 3347: 3346: 3302: 3296: 3295: 3277: 3240: 3234: 3233: 3223: 3191: 3185: 3184: 3151:(6039): 238–42. 3140: 3134: 3133: 3123: 3099: 3093: 3092: 3068: 3062: 3061: 3032: 3026: 3025: 3015: 2983: 2977: 2976: 2966: 2949:(19): 2392–403. 2934: 2928: 2927: 2917: 2893: 2887: 2886: 2869:(5449): 2511–4. 2858: 2852: 2851: 2841: 2809: 2803: 2802: 2792: 2768: 2762: 2761: 2751: 2727: 2721: 2720: 2718: 2716: 2708: 2682: 2672: 2662: 2630: 2624: 2623: 2613: 2589: 2583: 2582: 2572: 2548: 2539: 2538: 2536: 2534: 2522: 2516: 2515: 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18: 3780: 3779: 3775: 3774: 3773: 3771: 3770: 3769: 3745: 3744: 3743: 3738: 3724:Vascular nerves 3659: 3628: 3568: 3564:Lymph capillary 3540: 3521:Perforator vein 3492: 3449: 3428:Nutrient artery 3407: 3398: 3355: 3350: 3303: 3299: 3241: 3237: 3206:(34): 13882–7. 3192: 3188: 3141: 3137: 3100: 3096: 3083:(12): 3403–12. 3077:Cancer Research 3069: 3065: 3044:(5322): 55–60. 3033: 3029: 2984: 2980: 2935: 2931: 2894: 2890: 2859: 2855: 2810: 2806: 2783:(24): 6237–47. 2769: 2765: 2728: 2724: 2710: 2702: 2700: 2683: 2631: 2627: 2590: 2586: 2563:(10): 3107–12. 2549: 2542: 2532: 2530: 2523: 2519: 2509: 2507: 2500: 2496: 2451: 2447: 2414:10.1038/nm.4331 2402:Nature Medicine 2393: 2389: 2364:10.1038/nn.4428 2344: 2340: 2295: 2291: 2238: 2234: 2197:Brain Pathology 2189: 2185: 2132: 2128: 2075: 2071: 2008: 2004: 1985: 1929: 1925: 1886:(7323): 562–6. 1868: 1864: 1832: 1828: 1797:(10): 2906–17. 1783: 1779: 1734: 1730: 1691: 1687: 1642: 1635: 1590: 1586: 1541: 1534: 1521: 1520: 1516: 1469: 1465: 1406: 1402: 1363:(7112): 700–4. 1349: 1342: 1303:(7494): 55–60. 1289: 1280: 1235: 1228: 1175: 1171: 1148:(4–5): 467–76. 1134: 1130: 1115: 1093: 1084: 1059:10.1038/nn.2946 1039: 1024: 962: 958: 931:Tissue and Cell 923: 919: 874: 870: 825: 821: 800:(16): 1581–93. 790: 786: 782: 754: 745: 729: 678: 673: 661: 644: 611: 591: 578: 569: 548: 508: 496:phosphorylation 382: 370: 343: 332: 326: 323: 308: 292: 281: 276: 209: 126: 52: 17: 12: 11: 5: 3778: 3768: 3767: 3762: 3757: 3740: 3739: 3737: 3736: 3731: 3726: 3721: 3716: 3711: 3709:Tunica externa 3706: 3701: 3700: 3699: 3694: 3684: 3679: 3673: 3671: 3665: 3664: 3661: 3660: 3652:Pulmonary vein 3638: 3636: 3630: 3629: 3591: 3589: 3580: 3574: 3573: 3570: 3569: 3567: 3566: 3561: 3556: 3550: 3548: 3542: 3541: 3539: 3538: 3533: 3528: 3526:Emissary veins 3523: 3518: 3513: 3508: 3502: 3500: 3494: 3493: 3491: 3490: 3485: 3480: 3479: 3478: 3473: 3468: 3459: 3457: 3451: 3450: 3448: 3447: 3445:Elastic artery 3442: 3441: 3440: 3430: 3424: 3422: 3413: 3409: 3408: 3397: 3396: 3389: 3382: 3374: 3368: 3367: 3362: 3354: 3353:External links 3351: 3349: 3348: 3313:(4): 780–796. 3297: 3235: 3186: 3135: 3114:(4): 1104–10. 3094: 3063: 3027: 2978: 2929: 2908:(8): 1847–57. 2888: 2853: 2804: 2763: 2722: 2625: 2604:(9): 2653–64. 2584: 2540: 2517: 2494: 2445: 2408:(6): 733–741. 2387: 2338: 2289: 2252:(1): 111–120. 2232: 2203:(3): 303–310. 2183: 2146:(1): 103–115. 2126: 2089:(1): 216–227. 2069: 2022:(4): e46–e62. 2002: 2000: 1999: 1997:on 2014-02-01. 1923: 1862: 1843:(2): 495–504. 1826: 1777: 1748:(10): 1274–6. 1728: 1685: 1633: 1584: 1532: 1514: 1463: 1400: 1340: 1278: 1226: 1189:(5): 633–645. 1169: 1128: 1113: 1082: 1022: 956: 937:(2): 153–174. 917: 882:Neuro-Oncology 868: 819: 783: 781: 778: 777: 776: 771: 765: 763:Mesoangioblast 760: 753: 750: 744: 741: 728: 725: 689:Angiopoietin 1 677: 674: 672: 669: 660: 657: 643: 640: 635:polyol pathway 610: 607: 590: 587: 577: 574: 568: 565: 547: 544: 518:formation and 516:tight junction 507: 504: 467:aminopeptidase 388:, survival of 381: 378: 368: 345: 344: 295: 293: 286: 280: 277: 275: 272: 208: 205: 151:that line the 128: 127: 118: 112: 111: 106: 100: 99: 94: 88: 87: 82: 76: 75: 70: 64: 63: 59: 58: 54: 53: 32: 24: 23: 15: 9: 6: 4: 3: 2: 3777: 3766: 3763: 3761: 3758: 3756: 3753: 3752: 3750: 3735: 3732: 3730: 3729:Rete mirabile 3727: 3725: 3722: 3720: 3719:Vasa nervorum 3717: 3715: 3712: 3710: 3707: 3705: 3702: 3698: 3695: 3693: 3690: 3689: 3688: 3687:Tunica intima 3685: 3683: 3680: 3678: 3675: 3674: 3672: 3670: 3666: 3657: 3653: 3649: 3645: 3641: 3637: 3635: 3631: 3626: 3622: 3618: 3614: 3610: 3606: 3602: 3598: 3594: 3590: 3588: 3584: 3581: 3579: 3575: 3565: 3562: 3560: 3557: 3555: 3552: 3551: 3549: 3547: 3543: 3537: 3534: 3532: 3531:Venous plexus 3529: 3527: 3524: 3522: 3519: 3517: 3514: 3512: 3509: 3507: 3506:Vena comitans 3504: 3503: 3501: 3499: 3495: 3489: 3486: 3484: 3481: 3477: 3474: 3472: 3469: 3467: 3464: 3463: 3461: 3460: 3458: 3456: 3452: 3446: 3443: 3439: 3436: 3435: 3434: 3431: 3429: 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312: 306: 305: 301: 296:This section 294: 290: 285: 284: 271: 269: 265: 261: 256: 254: 250: 246: 242: 241:gap junctions 237: 232: 230: 226: 222: 213: 204: 202: 198: 194: 190: 186: 182: 178: 174: 170: 166: 162: 158: 154: 150: 146: 142: 138: 134: 123: 117: 113: 110: 107: 105: 101: 98: 95: 93: 89: 86: 83: 81: 77: 74: 71: 69: 65: 60: 55: 50: 46: 42: 38: 35: 30: 25: 20: 3760:Animal cells 3714:Vasa vasorum 3704:Tunica media 3669:Microanatomy 3438:Metarteriole 3310: 3306: 3300: 3275:10138/301079 3249: 3245: 3238: 3203: 3199: 3189: 3148: 3144: 3138: 3111: 3107: 3097: 3080: 3076: 3066: 3041: 3037: 3030: 2995: 2991: 2981: 2946: 2942: 2932: 2905: 2901: 2891: 2866: 2862: 2856: 2821: 2817: 2807: 2780: 2776: 2766: 2739: 2735: 2725: 2711:{{ 2703:{{ 2642: 2638: 2628: 2601: 2597: 2587: 2560: 2556: 2531:. 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Index


Transmission
electron micrograph
microvessel
endothelial cells
erythrocyte
Latin
MeSH
D020286
TH
H3.09.02.0.02006
FMA
63174
Anatomical terms of microanatomy
edit on Wikidata
mural cells
microcirculation
endothelial cells
capillaries
basement membrane
paracrine signaling
homeostatic
hemostatic
brain
blood–brain barrier
neurovascular unit
astrocytes
neurons
phagocytosis
central nervous system

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