Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0086543 (cataract)
 29,165 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We proposed the hypothesis that pseudophakic inflammation, including the fibrin reaction, may be caused by cytokines and/or prostaglandins, synthesized by residual lens epithelial cells (LEC). To test our hypothesis, we measured IL-1 alpha, TNF-alpha, IL-6 and EGF in the culture media of human LEC, obtained by capsulotomy during cataract surgery, by ELISA. IL-1 alpha was detected in one of the two pools of 2-week cultures (20.7 pg/10(5) cells), in two of the three pools of 3-week cultures (12.0 pg/10(5) cells and 13.9 pg/10(5) cells), and in one pool of 4-week cultures (11.1 pg/10(5) cells). IL-6 was detected in 1-week culture (195 pg/10(5) cells) and in 7-week culture (81.6 pg/10(5) cells). TNF-alpha and EGF were not detected. During culture, the cells proliferated and underwent fibroblast-like changes on exposure to the plastic wells. IL-1 and IL-6 may be also produced in vivo by residual LEC contacting with posterior chamber lens after cataract surgery, and these mediators may play a role in postoperative inflammation including fibrin reaction.
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PMID:[The synthesis of cytokines by human lens epithelial cells--interleukin 1 (IL-1), tumor necrosis factor (TNF) interleukin 6 (IL-6), and epidermal growth factor (EGF)]. 162 72

The inbred non-obese diabetic (NOD) mouse is a spontaneous model for insulin-dependent diabetes mellitus (IDDM). As in man and BB rats, IDDM in the NOD mouse has an autoimmune aetiology. The disease is controlled by several genes, one of which, Idd-1, has been mapped to the major histocompatibility complex (MHC) on chromosome 17. However, Idd-1 has not yet been identified. To facilitate the identification of Idd-1 we have further analysed the MHC region for restriction fragment length polymorphisms and we find that the NOD mouse has a distinct haplotype: H-2K1nod Kd A beta nod A alpha d E beta nod TNF-alpha beta. In addition, the NOD mouse shows some similarities with the H-2b haplotype in the Q region, in that either the Q7 or the Q9 gene seems to be like that in the b-haplotype and that the Qa2 antigen is expressed, while other parts of this region are distinct from the b- as well as the d- haplotype. In contrast, the sister strain, the non-obese normal (NON) mouse, derived from the same cataract-prone line of mice as the NOD mouse, has an MHC Class I region indistinguishable from the b-haplotype, but the MHC Class II region is distinct from the NOD mouse as well as the b-, d- and k-haplotype.
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PMID:Restriction fragment length polymorphisms in the major histocompatibility complex of the non-obese diabetic mouse. 197 42

At clinically relevant concentrations, volatile anaesthetic agents influence neutrophil function. Our hypothesis was that sevoflurane would inhibit neutrophil apoptosis and consequently influence the postoperative pro-inflammatory state. In order to identify selectively the effect of the anaesthetic agent sevoflurane, we studied patients undergoing minimally stimulating (cataract) surgery randomly allocated to receive either sevoflurane (n = 11) or local anaesthesia (n = 12). Venous blood samples were taken immediately prior to anaesthesia and at 1, 8 and 24 h thereafter. The rate of neutrophil apoptosis, plasma concentration of cytokines and differential white cell count were measured. The rates of neutrophil apoptosis and plasma concentrations of IL-1beta, TNF-alpha and IL-8 at each time point were similar in the two groups. IL-6 concentrations increased significantly and to a similar extent compared to preanaesthetic levels at 8 and 24 h. This study demonstrates that sevoflurane does not influence the rate of neutrophil apoptosis, cytokine concentrations and neutrophil count following cataract surgery.
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PMID:General versus regional anaesthesia for cataract surgery: effects on neutrophil apoptosis and the postoperative pro-inflammatory state. 1099 29

In the mammalian lens, intracellular oxidants produced by photo-oxidative processes and exposure to toxic chemicals constitute stresses that produce cellular oxidative damage, result in changes in gene expression, and are causally related to cataract formation. Currently, it is believed that H(2)O(2) is the major oxidant to which the lens is exposed. In this report, we examine the activation and regulation of the oxidant-sensitive transcription factor, NF-kappa B, by H(2)O(2)-mediated oxidative stress in lens epithelial cells. Lens epithelial cells treated with H(2)O(2) demonstrated at 1 h a strong activation of NF-kappa B which returned to basal levels by 2 h. Under proteasome inhibition using both MG132 and lactacystin, H(2)O(2)-mediated activation of NF-kappa B was prevented, implicating the involvement of proteasome degradation of I kappa B proteins as being necessary for this activation. However, Western blot analysis demonstrated no degradation of I kappa B-alpha, -beta, or -epsilon associated with H(2)O(2)-mediated NF-kappa B activation. In comparison, when cells were treated with the cytokine TNF-alpha, NF-kappa B was strongly activated and degradation of both I kappa B-alpha and -beta was observed. These results clearly demonstrate that H(2)O(2)-mediated oxidative stress activates NF-kappa B in lens epithelial cells, which may subsequently lead to changes in gene expression. The results also reveal that different signaling pathways in the activation of NF-kappa B in lens epithelial cells are utilized by H(2)O(2) and TNF-alpha. These different pathways of NF-kappa B activation may be required to effect specific NF-kappa B-dependent gene expression in response to these different stimuli.
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PMID:H(2)O(2)-mediated oxidative stress activates NF-kappa B in lens epithelial cells. 1152 50

The purpose of our study was to establish a system for culturing normal human conjunctival epithelial (NHCE) cells under serum-free culture conditions without compromising their ability to differentiate into a mucous epithelium. To this end, small pieces of normal conjunctiva were biopsied from patients undergoing cataract surgery. Obtained NHCE cells were cultured in bronchial epithelial growth medium (BEGM) under serum free culture conditions and passage 3 cells were air-lifted. Cultured NHCE cells displayed typical epithelial morphology. Expression of cytokeratin 19 and conjunctival epithelial specific carbohydrate residue were detected. Air-lifted NHCE cells demonstrated an increase in stratification and differentiation into goblet cells up to 3weeks under air-liquid interface (ALI) culture condition. NHCE cells expressed MUC1, MUC4, MUC16, and MUC5AC mRNA, and MUC5AC production and secretion increased in a time dependent manner after culture under ALI conditions. Exposure of cells to proinflammatory cytokines (TNF-alpha or IFN-gamma) resulted in upregulation of MUC1, MUC4, MUC16, and MUC5AC gene expression. In conclusion, differentiated NHCE cells showed features of a multi-layered conjunctival epithelium, including goblet cells, and retained functional characteristics similar to those seen in vivo. This cell culture system can better facilitate investigation of conjunctival epithelial cell biology and goblet cell differentiation.
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PMID:Multi-layered culture of primary human conjunctival epithelial cells producing MUC5AC. 1756 80

Cataract formation is a frequent complication in childhood uveitis. The management of cataracts in childhood uveitis may be particularly difficult. Patient selection is important for successful surgery. Preoperative evaluation is required in order to specify the course and etiology of uveitis. Complete quiescence of the inflammation in required before surgery. The surgical trauma should be minimized. Intraocular lens implantation may be proposed for selected uveitis children and may be considered in well controlled juvenile idiopathic arthritis associated uveitis, e.g. with the use of immunosuppressive drugs or TNF-alpha inhibitors. Postoperatively, the anti-inflammatory medication must be increased and continued for 8-10 weeks.
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PMID:[Current cataract surgery for uveitis in childhood]. 1757 66

Polymerase chain reaction revealed Herpesviridae (Herpes simplex, Cytomegalovirus) in the lens substance in 46 patients operated on for age-related cataract. Thirty-two patients of them had age-related macular degeneration. Herpes simplex was found in 6 (18.8%) of the patients with age-related macular degeneration. At the same time there were signs of lacrimal fluid antiviral immunity imbalance with decreased IFN-gamma and TNF-alpha and increased IFN-alpha. The authors consider it advisable to perform antivirus treatment in patients with the above abnormality, preventing the active forms of herpetic infection.
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PMID:[Intraocular infection with herpesviruses and antiviral immunity in patients with age-related macular degeneration]. 1848 71