Abstract：
:Aim of present investigation was to study the effect of catechin and the combination of catechin and cetirizine in ovalbumin induced animal model of allergic conjunctivitis. Guinea pigs were divided into 5 groups: normal control, disease control, disease treated with catechin 100 mg/kg, disease treated with cetirizine 10 mg/kg, disease treated with combination of catechin and cetirizine, 50 mg/kg & 5 mg/kg respectively. Sensitization was carried out by intraperitoneal injection of ovalbumin for the period of 14 day. Simultaneously, catechin was administered orally for 14 days while, cetirizine was administered at the day of experiment. Determination of clinical scoring, mast cell and blood histamine content, histidine decarboxylase activity from stomach was carried out. Vascular permeability was measured by dye leakage after secondary challenge of allergen and conjunctival tissues were subjected for histopathological examinations. Treatment with catechin, cetirizine and combination showed significant (P < 0.05) decrease in clinical scoring and vascular permeability. While, catechin 100 mg/kg and catechin 50 mg/kg showed significant (P < 0.05) decrease in histamine content in mast and blood. The treatment also showed significant (P < 0.05) decrease in the histidine decarboxylase enzyme activity. However, cetirizine group did not show any difference in enzyme activity as well as histamine content. Histopathological examination also showed improvement in ulceration and decrease in edema and inflammation in all treatment groups. From the present study, we can conclude that catechin exhibits potent anti-allergic activity by histidine decarboxylase enzyme inhibition and combination shown significant anti-allergic activity at reduced dose by both enzyme inhibition as well as inhibition of histamine receptors.
journal_name
Exp Eye Resjournal_title
Experimental eye researchauthors
Bakrania AK,Patel SSdoi
10.1016/j.exer.2015.05.020subject
Has Abstractpub_date
2015-08-01 00:00:00pages
32-8eissn
0014-4835issn
1096-0007pii
S0014-4835(15)00173-6journal_volume
137pub_type
杂志文章abstract：:This study tested the hypothesis that the beta-adrenergic antagonists betaxolol and timolol, cause retinal arteriolar vasodilatation in addition to their ability to reduce intraocular pressure (IOP), and compared their vasodilatory ability with that of a known Ca2+ channel entry blocker nimodipine in donor human and p...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1998.0495
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journal_title：Experimental eye research
pub_type： 杂志文章
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journal_title：Experimental eye research
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更新日期：2013-08-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2006.05.005
更新日期：2006-10-01 00:00:00
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pub_type： 杂志文章
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更新日期：2003-03-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
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更新日期：2016-05-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1993.1186
更新日期：1993-12-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1999.0753
更新日期：2000-01-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.2001.1150
更新日期：2002-05-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1996.0177
更新日期：1997-01-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(90)90034-r
更新日期：1990-05-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
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更新日期：1983-09-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
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更新日期：2018-08-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章,评审
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更新日期：2013-06-01 00:00:00
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journal_title：Experimental eye research
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1999.0796
更新日期：2000-03-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2005.11.013
更新日期：2006-07-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2007.01.006
更新日期：2007-05-01 00:00:00
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journal_title：Experimental eye research
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doi：10.1016/j.exer.2004.06.006
更新日期：2005-01-01 00:00:00
abstract：:Numerous animal studies indicate that aldose reductase inhibitors (ARIs) are beneficial for the prevention or amelioration of diabetic complications such as neuropathy, nephropathy and the ocular complications of cataract, retinopathy and keratopathy. To aid in the identification of novel potent ARIs, we have previous...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2004.05.011
更新日期：2004-12-01 00:00:00
abstract：:Vitreous from bovine, human and chick embryo has been found to contain a trypsin inhibitory activity. Chymotrypsin-inhibitory activity was also identified in bovine and chick embryo vitreous. Following either ultrafiltration or Bio Gel P-10 chromatography, these activities appear in fractions having a molecular weight...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(85)90031-4
更新日期：1985-11-01 00:00:00
abstract：:Female New Zealand White rabbits were treated subcutaneously with 0.0375 or 0.15 mg kg-1 dexamethasone or physiological saline solution from the 8th through to the 11th day of gestation. Short-term administration of 0.15 mg kg-1 dexamethasone induced two types of morphological lens deviations in the offspring (lenses ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(84)90008-3
更新日期：1984-08-01 00:00:00
abstract：:A number of variants of the wild-type (wt) estrogen receptor beta (ERbeta-1) coexist in a wide range of tissues. In the human these include, together with others, the expression of several isoforms (ERbeta-2-ERbeta-5) due to alternative splicing of exons encoding the carboxy terminus. In this study, we determined whet...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2005.01.019
更新日期：2005-08-01 00:00:00
abstract：:The effects of temperature on rod outer segment (ROS) length and membrane shedding were studied in a cyprinodont fish, Fundulus zebrinus. After 30 days in 14L/10D cyclic light and 17 degrees C, ROS length averaged 41.2 microns. Fish were then exposed to 7, 17 or 27 degrees C for 10 and 25 days before being sampled 5 h...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(05)80036-3
更新日期：1995-08-01 00:00:00
