User profiles for A Urtti

Arto Urtti

University of Helsinki
Verified email at helsinki.fi
Cited by 27471

Challenges and obstacles of ocular pharmacokinetics and drug delivery

A Urtti - Advanced drug delivery reviews, 2006 - Elsevier
Modern biological research has produced increasing number of promising therapeutic
possibilities for medical treatment. These include for example growth factors, monoclonal …

[HTML][HTML] Pharmacokinetic aspects of retinal drug delivery

…, M Antopolsky, KS Vellonen, M Ruponen, A Urtti - Progress in retinal and …, 2017 - Elsevier
Drug delivery to the posterior eye segment is an important challenge in ophthalmology,
because many diseases affect the retina and choroid leading to impaired vision or blindness. …

Chemical enhancement of percutaneous absorption in relation to stratum corneum structural alterations

TM Suhonen, JA Bouwstra, A Urtti - Journal of controlled release, 1999 - Elsevier
The outermost layer of the skin, stratum corneum (SC), provides an outstanding barrier
against the external environment and is also responsible for skin impermeability toward most …

[HTML][HTML] Nanofibrillar cellulose hydrogel promotes three-dimensional liver cell culture

…, O Ikkala, A Laukkanen, A Urtti… - Journal of controlled …, 2012 - Elsevier
Over the recent years, various materials have been introduced as potential 3D cell culture
scaffolds. These include protein extracts, peptide amphiphiles, and synthetic polymers. …

Microemulsions for topical delivery of estradiol

…, J Kiesvaara, TM Suhonen, A Urtti - International journal of …, 2003 - Elsevier
Estradiol has been widely used for the treatment of hormonal insufficiencies. Due to its extensive
first pass metabolism after oral administration, transdermal administration of estradiol in …

Ocular absorption following topical delivery

K Järvinen, T Järvinen, A Urtti - Advanced drug delivery reviews, 1995 - Elsevier
Most ocular diseases are treated with topical application of eyedrops. After instillation of an
eyedrop, typically less than 5% of the applied drug penetrates the cornea and reaches …

[HTML][HTML] Interactions of polymeric and liposomal gene delivery systems with extracellular glycosaminoglycans: physicochemical and transfection studies

M Ruponen, S Ylä-Herttuala, A Urtti - Biochimica et Biophysica Acta (BBA) …, 1999 - Elsevier
Complexes of DNA with cationic lipids and cationic polymers are frequently used for gene
transfer. Extracellular interactions of the complexes with anionic glycosaminoglycans (GAGs) …

Characterization of paracellular and aqueous penetration routes in cornea, conjunctiva, and sclera.

…, S Auriola, K Kontturi, A Urtti - … & visual science, 1997 - iovs.arvojournals.org
PURPOSE: To characterize quantitatively the paracellular permeation routes in rabbit cornea,
conjunctiva, and sclera using polyethylene glycol (PEG) oligomers. METHODS: Corneal, …

Drug transport in corneal epithelium and blood–retina barrier: emerging role of transporters in ocular pharmacokinetics

E Mannermaa, KS Vellonen, A Urtti - Advanced drug delivery reviews, 2006 - Elsevier
Corneal epithelium and blood–retina barrier (ie retinal capillaries and retinal pigment
epithelium (RPE)) are the key membranes that regulate the access of xenobiotics into the ocular …

Pharmacokinetic role of L-type amino acid transporters LAT1 and LAT2

EM Del Amo, A Urtti, M Yliperttula - European Journal of Pharmaceutical …, 2008 - Elsevier
LAT1 and LAT2 are heterodimeric large amino acid transporters that are expressed in various
tissues, including the intestinal wall, blood–brain barrier, and kidney. These transporters …