Abstract:
PURPOSE:Transforming growth factor -beta2 (TGF-beta2) is a predominant isoform of TGF-betas in the eye and plasmin is a peptidase with many functions. To better understand the pathogenesis of retinal microcirculation disorders, the effects of TGF-beta2 and plasmin on cultured bovine retinal pericytes were investigated. METHODS:Exogenous TGF-beta2 or plasmin was added to some cultures, DNA synthesis during cell cycle progression was investigated using [(3)H]thymidine incorporation. Anti-TGF-beta2 antibody was added to neutralize the effects of TGF-beta2. TGF-beta2 in the culture medium was measured using enzyme-linked immunosorbent assay (ELISA). RESULTS:Exogenous TGF-beta2 (10 pg to 100 ng/mL) suppressed DNA synthesis. Pericytes produced TGF-beta2. Anti-TGF-beta2 antibody neutralized TGF-beta2 and accelerated DNA synthesis, which shows that pericytes regulate their own cell cycle by action of the autocrine and/or paracrine system of TGF-beta2. Plasmin (0.2 to 0.5 U/mL) accelerated DNA synthesis in a dose-dependent manner, while addition of aprotinin, a protease inhibitor, counteracted this effect of plasmin. The concentration of TGF-beta2 in the culture medium decreased with the addition of plasmin. Simultaneous addition of both plasmin and anti-TGF-beta2 antibody accelerated DNA synthesis. High and low glucose concentrations of the culture medium did not affect DNA synthesis. CONCLUSIONS:Our results suggest that TGF-beta2 and plasmin respectively decrease and increase DNA synthesis. In a retinal microcirculation disorder, they may play competitive roles in the cell cycle of pericytes.
journal_name
Curr Eye Resjournal_title
Current eye researchauthors
Katsura MK,Mishima HK,Minamoto A,Ishibashi F,Yamashita Hsubject
Has Abstractpub_date
2000-03-01 00:00:00pages
166-72issue
3eissn
0271-3683issn
1460-2202journal_volume
20pub_type
杂志文章abstract:PURPOSE:Psychiatric conditions and not just the treatments themselves might be involved in the pathophysiology of dry eye disease (DED). The aim of our study was to evaluate the association between depression and DED using objective and subjective tests in patients with newly diagnosed depressive disorder who were not ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713683.2016.1236966
更新日期:2017-05-01 00:00:00
abstract:PURPOSE:To determine whether substance P is present in human tears. METHODS:Tear samples (1-2 microliters) were collected from one eye of each of 12 subjects. Two of the eyes had dry eye syndrome, two wore contact lenses and had dry eye syndrome, and eight were normal. Five of the eight normal eyes were scheduled to u...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.16.9.960.5040
更新日期:1997-09-01 00:00:00
abstract:PURPOSE:To investigate orbital biomechanical properties in patients with thyroid orbitopathy and in age- and gender-matched healthy subjects using the Corvis-ST (CST, Oculus Wetzlar, Germany). METHODS:The CST allows a non-contact tonometry with an ultra-high-speed Scheimpflug device to record the deformation of the co...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713683.2017.1405044
更新日期:2018-03-01 00:00:00
abstract::In the unsutured partial thickness penetrating wounds of the cornea, the epithelium migrates over the wounded stromal surface prior to the onset of stromal regeneration. To determine the possible affects of the epithelial ingrowth on the organization of the stromal scar tissues, the healing of unsutured and sutured wo...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689508995803
更新日期:1995-09-01 00:00:00
abstract::The interfibrillar spacing of collagen fibrils was measured at twenty different positions across a macular dystrophy cornea using synchrotron X-ray diffraction. Unlike previous work of this type the cornea had not been frozen for storage. The spacings were all significantly lower than the spacings which existed at sim...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689008999628
更新日期:1990-04-01 00:00:00
abstract:PURPOSE:Intravitreal injection of ciliary neurotrophic factor (CNTF) is known to induce glial intermediate filament protein (GFAP) expression in retinal Müller cells. Because CNTF binding can activate multiple signaling kinases, we have examined the involvement of JAK/STAT pathway in GFAP induction in Müller cells. ME...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.24.4.305.8408
更新日期:2002-04-01 00:00:00
abstract::Samples of aqueous humor from rabbits and humans were examined for growth effects on subconfluent monolayer fibroblast cultures from ocular and extraocular tissues. At a concentration of 20% aqueous by medium volume, both homologous and heterologous aqueous stimulated DNA synthesis in fibroblasts from both species. Th...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688209020019
更新日期:1982-01-01 00:00:00
abstract::Corneas and tendons dissected from 17-day-old chick embryos were labeled with [35S]methionine in the presence of 0.3 mM alpha,alpha'-dipyridyl. The unhydroxylated, 35S-labeled pro alpha chains and alpha chains were isolated by polyacrylamide gel electrophoresis in sodium dodecyl sulfate. The pro alpha and alpha chains...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688508999972
更新日期:1985-02-01 00:00:00
abstract:PURPOSE:To explore the in vitro proliferative potential of human limbal epithelial cells after 31 degrees C organ-culture storage and to investigate putative factors influencing it. METHODS:185 cultures of limbal explants were carried-out either from full-thickness explants (n = 102) or from enzymatically dissociated ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713680600681228
更新日期:2006-05-01 00:00:00
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journal_title:Current eye research
pub_type: 杂志文章
doi:
更新日期:2000-05-01 00:00:00
abstract:PURPOSE:The high prevalence of positive family history of keratoconus (KC) in KC patients is well-known. However, the results regarding the association between family history of KC and disease severity are controversial. The aim of this study was to evaluate the possible association between family history and severity ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713683.2015.1128553
更新日期:2016-11-01 00:00:00
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journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.18.6.430.5269
更新日期:1999-06-01 00:00:00
abstract:BACKGROUND:Aqueous extract of Pleurotus tuberregium (PT) has been shown to reduce intraocular pressure (IOP) but the underlying mechanism has not been explained. PURPOSE:To investigate the effect of PT on the bovine iris in vitro in comparison with acetylcholine (ACh). METHOD:Strips of the iris were mounted in 10 ml ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713683.2012.747615
更新日期:2013-03-01 00:00:00
abstract::In the Royal College of Surgeons rat, the migration of phagocytic cells into the subretinal space accompanies photoreceptor cell death during the early stages of retinal dystrophy. These are followed closely by cellular alterations in the retinal pigment epithelium, Müller cells, and outer retinal vessels. We have ide...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689308999475
更新日期:1993-03-01 00:00:00
abstract::Intravitreal injection of purified human chorionic gonadotropin (hCG) in rabbits decreased intraocular pressure (IOP). A dose-dependent decrease in IOP was observed with intravitreal hCG concentrations at 30 nM and 100 nM. The onset of this effect was later than 10 hr following the injection and it lasted for more tha...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688809015151
更新日期:1988-10-01 00:00:00
abstract::The selective DA2 agonist, N-0437, produced an acute reduction in intraocular pressure (IOP) and pupil diameter (PD) when applied topically to the eyes of normal monkeys. Ocular hypotension and miosis were primarily unilateral in nature, dose-related and lasted 3 to 5 hours following drug instillation. In normal monke...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688708997557
更新日期:1987-11-01 00:00:00
abstract::The management of opportunistic infections is a significant problem in acquired immunodeficiency syndrome (AIDS) and the development of more effective chemotherapeutic agents is needed. We present the ocular manifestations of an AIDS-like disease in rhesus monkeys experimentally infected with simian immunodeficiency v...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689008999571
更新日期:1990-08-01 00:00:00
abstract::We assessed the role of platelet-activating factor (PAF) in corneal allograft rejection and evaluated the effects of a PAF antagonist on corneal inflammation, cellular infiltration, vascularization, and edema. Rabbits with vascularized corneas served as recipients of allogeneic cornea grafts. Rabbits with normal corne...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689409042408
更新日期:1994-02-01 00:00:00
abstract::In an attempt to determine the factors involved in ocular pigment variation, the eyes of pallid mice (c57BL/6J-Pa/Pa), and those of littermate black mice (C57BL/6J-+/Pa) were examined ultrastructurally, histochemically, and biochemically. As controls, the eyes of black and congenic albino mice (C57BL/6J +/C2J and -C2J...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688208998376
更新日期:1982-01-01 00:00:00
abstract::We assessed in vitro the antimicrobial activity of four agents (vancomycin, teicoplanin, mupirocin, and imipenem) which are effective against Gram-positive cocci causally associated with bacterial keratitis, as well as their corneal epithelial cytotoxicity. Minimal inhibitory concentrations inhibiting 90% of strains (...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689309001839
更新日期:1993-07-01 00:00:00
abstract::Cultured retinal glial cells from the rat are responsive to modulation by vasoactive intestinal peptide (VIP). VIP (1 X 10(-6) M) elevated the intracellular cyclic AMP concentration from the basal level of (4.4-11.1) p mole/mg protein to (354-440) p mole/mg protein in three minutes at 25 degrees C. The half-maximal co...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688909000045
更新日期:1989-11-01 00:00:00
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journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713680903308495
更新日期:2009-12-01 00:00:00
abstract:PURPOSE:Mechanical stimulation induces intercellular Ca(2 +) waves in the corneal endothelium. The extent of the wave propagation is dependent on the activity of gap junctions, hemichannels, and ectonucleotidases. To further establish the use of a cell culture model to investigate intercellular communication, in this s...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713680902913022
更新日期:2009-06-01 00:00:00
abstract:PURPOSE:To assess changes in retinal vascular caliber in response to short-term use of nepafenac eye drops in patients with mild diabetic macular edema. MATERIALS AND METHODS:Thirty-four patients with previously untreated bilateral mild diabetic macular edema were included in this prospective study. For each participa...
journal_title:Current eye research
pub_type: 杂志文章,随机对照试验
doi:10.1080/02713683.2017.1399425
更新日期:2018-03-01 00:00:00
abstract::A bovine lens "native" plasma membrane fraction containing its full compliment of extrinsic proteins was prepared by sucrose density centrifugation of the water insoluble fraction. The major membrane fraction was found at the 25/45% sucrose interface. This fraction contained 73% of the total water insoluble phospholip...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689209000748
更新日期:1992-08-01 00:00:00
abstract:PURPOSE:The aim of this study was to evaluate the effect of vitreous reflux (VR) on the short-term effect of intravitreal ranibizumab injection. MATERIALS AND METHODS:The study included 181 eyes of 81 age-related macular degeneration (AMD) and 100 diabetic macular edema (DME) patients. Treatment response was evaluated...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713683.2020.1789664
更新日期:2021-02-01 00:00:00
abstract:PURPOSE:The similar and overlapping activity of VEGF and the potent corneal-derived angiogenic eicosanoid 12(R)-HETrE calls for a study of the temporal relationship in the expression of these two autocoids. Since recent evidence suggests that hypoxia induces the expression of a CYP4B1 mRNA which might be involved in th...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.23.1.1.5422
更新日期:2001-07-01 00:00:00
abstract:PURPOSE:To determine whether environmental factors or bacterial viability affect the binding of two strains of P. aeruginosa to mouse cornea. METHODS:Scarified corneas were placed in organ culture and inoculated with P. aeruginosa cell suspensions containing either ATCC 19660 or PAO1 bacterial strains classed as cytot...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.17.3.231.5226
更新日期:1998-03-01 00:00:00
abstract::Although experimental models of autoimmune uveitis predict pinealitis coincident with uveitis, there is no direct evidence of pineal pathology accompanying a human uveitis. Horses with naturally occurring uveitis are a potential source of eye and pineal tissues that are not available from human patients with active uv...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689208999525
更新日期:1992-01-01 00:00:00
abstract:PURPOSE:To evaluate the length of the trabecular meshwork (TM) from the scleral spur (SS) to Schwalbe's line (SL) and assess the detectability of the SS in histopathology specimens. METHODS:This study included 158 angle images from 79 cross-sectional slides derived from eyes enucleated for melanoma. The slides were st...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713683.2012.700757
更新日期:2013-01-01 00:00:00