نتایج جستجو برای: limbal

تعداد نتایج: 1805  

ژورنال: Anatomical Sciences Journal 2006
Bahar Vand, Hosein, Ebrahimi, Marziyeh, Masoomi, Mohammad, Piriaei, Abbas,

Purpose: The present study intends to show the characteristics of cultured limbal stem cell (CLSCs) and to compare them with normal Conjunctival (C), Limbal (L) and Cornea (K) tissues. Materials and Methods: The expressions of a set of genes potentially involved in differentiation and stemness function of limbal stem cells were assessed in freshly prepared limbal, corneal, and conjunctival tis...

Juan A. Ramirez-Miranda Siamak Zarei-Ghanavati Sophie X. Deng

Background  To report normal variations of the limbal structures using in vivo laser scanning confocal microscopy. Methods: This was a retrospective study of fourteen eyes from 11 healthy individuals. Confocal imaging of cornea and limbus was performed using Heidelberg Retina Tomograph III Rostock Corneal Module. Results: The typical structure of the palisades of Vogt (POV) was detected ...

Journal: :journal of current ophthalmology 0
مهدی حسینی تهرانی mehdi hosseinitehrani سیدفرزاد محمدی s-farzad mohammadi آسو عل محمودی asou alimahmoudi ونداد فرهادی vandad farhady

we are describing a new surgical approach in the management of advanced ocular surface cicatrization through a single procedure conjunctival-limbal-corneal allograft in which the external eye is resurfaced it involves a lamellar corneolimbal keratoplasty, 360° limbal stem cell transfer (on a “bipedicle” conjunctival-corneal carrier), and conjunctival tissue transplantation - all in a single con...

Journal: :بینا 0
علیرضا برادران رفیعی baradaran-rafii ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم طلیعه منتهایی montahai ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم مهدی اصلانی eslani ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم

stem cells located at the limbus ,  are the ultimate source for regeneration of the corneal epithelium in the normal and traumatized states.  when limbal stem cells are dysfunctional or deficient, limbal stem cell deficiency (lscd) develops. its surgical management depends on laterality and severity of corneal-limbal involvement. conventional methods of stem cell transplantation are conjunctiva...

Journal: :بینا 0
علیرضا برادران رفیعی ar baradaran-rafie ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم مهدی اصلانی m aslani ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم حسین حسن پور h hasanpoor ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم مرجان زارع جوشقانی m zare joshaghani ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم حسین جمالی h jamali دانشگاه علوم پزشکی شیراز محمد زارع جوشقانی m zare joshaghani ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم بهرام عین الهی

purpose: to report the outcomes of conjunctival-limbal autograft (clau) in patients with unilateral total limbal stem cell deficiency (lscd) emphasizing surgical problems, complications, and their management. methods: in this prospective interventional case series, clau combined with amniotic membrane transplantation as a graft was performed on 26 patients with unilateral total lscd due to chem...

2011
H. Amirjamshidi B.Y. Milani H.M. Sagha A. Movahedan M.A. Shafiq R.M. Lavker B.Y.T. Yue A.R. Djalilian

PURPOSE Limbal fibroblasts are known to regulate the maintenance and differentiation of the corneal epithelium including the limbal epithelial stem cells. This study examined the effect of limbal fibroblast conditioned media in a mouse model of limbal stem cell deficiency. METHODS Limbal stem cell deficiency was created in C57/Bl6 mice by performing a limbus to limbus epithelial debridement. ...

Journal: :Japanese journal of ophthalmology 2002
Akira Kobayashi Atsushi Nagata Yutaka Shirao Kazuo Kawasaki Taeko Ohta Yohko Amaya-Ohkura Akitaka Nonomura

PURPOSE To report our experience managing a limbal mass associated with limbal vernal keratoconjunctivitis (VKC) by surgical excision. METHODS A 16-year-old girl was referred to our hospital with the chief complaints of itching and photophobia in both eyes. She had a 2-year history of gradually enlarging limbal gelatinous masses on the temporal limbus in both eyes, which were diagnosed as lim...

2017
Özlem Barut Selver Ayşe Yağcı Sait Eğrilmez Mehmet Gürdal Melis Palamar Türker Çavuşoğlu Utku Ateş Ali Veral Çağrı Güven Jose Mario Wolosin

The cornea is the outermost tissue of the eye and it must be transparent for the maintenance of good visual function. The superficial epithelium of the cornea, which is renewed continuously by corneal stem cells, plays a critical role in the permanence of this transparency. These stem cells are localized at the cornea-conjunctival transition zone, referred to as the limbus. When this zone is af...

Journal: :The Indian journal of medical research 2006
B Sudha H N Madhavan G Sitalakshmi J Malathi S Krishnakumar Y Mori H Yoshioka S Abraham

BACKGROUND & OBJECTIVES Cultivated limbal stem cell transplantation is being used as a current treatment modality for limbal stem cell deficiency. However, use of allogenic biological material as substrate is associated with risks of transmission of certain diseases and allograft rejection. Therefore development of non-toxic biodegradable synthetic polymers is important. We undertook this study...

Journal: :Personality & social psychology bulletin 2018
Mitch Brown Donald F Sacco

Limbal rings are dark annuli encircling the iris that fluctuate in visibility based on health and age. Research also indicates their presence augments facial attractiveness. Given individuals' prioritization of health cues in short-term mates, those with limbal rings may be implicated as ideal short-term mates. Three studies tested whether limbal rings serve as veridical health cues, specifical...

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