Passive and iontophoretic transport of pramipexole dihydrochloride across human skin microchannels created by microneedles in vitro

2021 ◽  
pp. 121092
Author(s):  
Kamchai Saepang ◽  
S. Kevin Li ◽  
Doungdaw Chantasart
Keyword(s):  
Human Skin ◽  
Pramipexole Dihydrochloride

Desmosomal distribution in the epidermis of a non-contracting human skin equivalent

1992 ◽  
Vol 50 (1) ◽  
pp. 896-897
Author(s):  
L.X. Oakford ◽  
S.D. Dimitrijevich ◽  
R. Gracy
Keyword(s):  
Human Skin ◽  
Basal Layer ◽  
Skin Equivalent ◽  
Tissue Component ◽  
Intact Skin ◽  
Similar Sequence ◽  
Sequence Of Events ◽  
Suprabasal Keratinocytes ◽  
Human Skin Equivalent

In intact skin the epidermal layer is a dynamic tissue component which is maintained by a basal layer of mitotically active cells. The protective upper epidermis, the stratum corneum, is generated by differentiation of the suprabasal keratinocytes which eventually desquamate as anuclear comeocytes. A similar sequence of events is observed in vitro in the non-contracting human skin equivalent (HSE) which was developed in this lab (1). As a part of the definition process for this model of living skin we are examining its ultrastructural features. Since desmosomes are important in maintaining cell-cell interactions in stratified epithelia their distribution in HSE was examined.

Human Skin-Derived Fibroblasts Acquire In Vitro Anti-Tumor Potential after Priming with Paclitaxel

2013 ◽  
Vol 13 (3) ◽  
pp. 523-530 ◽  
Author(s):  
Augusto Pessina ◽  
Valentina Cocce ◽  
Arianna Bonomi ◽  
Loredana Cavicchini ◽  
Francesca Sisto ◽  
...  
Keyword(s):  
Human Skin

The Effect of Practolol, In Vitro Generated Metabolites of Practolol and Chemical Analogues on the Rate of Growth of Human Skin Fibroblasts

1984 ◽  
Vol 12 (2) ◽  
pp. 89-97
Author(s):  
Graham R. Elliott ◽  
H.E. Amos ◽  
James W. Bridges
Keyword(s):  
Human Skin ◽  
Psoriasis Patient ◽  
Skin Fibroblasts ◽  
Human Skin Fibroblasts ◽  
Cell Type ◽  
Normal Human Skin ◽  
Rate Of Growth ◽  
Structural Analogues ◽  
Normal Human

The rate of growth of normal human skin fibroblasts was inhibited in a dose related, reversible, fashion by practolol (N-4-(2-hydroxy)-3 (1-methyl)-aminopropoxyphenylacetamine) (ID50 1.35 ± 0.14 x 10-3M), propranolol (1-(isopropylamino)-3(1-naphthyl-oxy)-2-propranolol) (ID50 0.145 ± 0.02 x 10-3M) and paracetamol (N-(4-hydroxyphenyl) acetamide) (ID50 0.85 ± 0.2 x 10-3M). Skin fibroblasts isolated from a psoriasis patient were more sensitive towards practolol (ID50 0.48 ± 0.14 x 10-3M) and propranolol (ID50 0.032 ± 0.002 x 10-3M), but less sensitive towards paracetamol (ID50 1.3 ± 0.07 x 10-3M). In vitro generated metabolites of practolol, using normal or Arochlor 1254-pretreated hamster liver preparations, and structural analogues of practolol had no effect upon the growth of either cell type.

The Relationship of Width, Thickness, Volume and Load to Extension for Human Skin in Vitro

1980 ◽  
Vol 9 (4) ◽  
pp. 179-183 ◽  
Author(s):  
H L Stark ◽  
A Al-Haboubi
Keyword(s):  
Human Skin ◽  
Collagen Fibre ◽  
Phase Volume ◽  
Lateral Contraction ◽  
Low Stiffness ◽  
Phase Thickness ◽  
Relationship Of ◽  
The Relationship ◽  
Fibre Matrix

The relationships of width, thickness, volume and load to extension for human skin in vitro are reported. The specimens tested exhibited a low stiffness phase followed by a high stiffness phase. Volume rose than fell back to the initial volume at approximately the end of the low stiffness phase, and continued on falling to a final reduction of about 20 per cent at failure. Width decreased throughout, showing a maximum rate of reduction at approximately the end of the low stiffness phase. Thickness increased at a rate which also was maximum at the end of the low stiffness phase. The specimens used were long compared with their width and thickness thus offering no constraint to lateral contraction. An interpretation of this data in respect of the behaviour of the collagen fibre matrix is postulated.

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