79 results on '"Palatsi R"'
Search Results
2. Increased expression of glucocorticoid receptor β in lymphocytes of patients with severe atopic dermatitis unresponsive to topical corticosteroid
- Author
-
Hägg, P. M., Hurskainen, T., Palatsi, R., Ilves, M., and Oikarinen, A.
- Published
- 2010
- Full Text
- View/download PDF
3. 0·03% tacrolimus ointment applied once or twice daily is more efficacious than 1% hydrocortisone acetate in children with moderate to severe atopic dermatitis: results of a randomized double-blind controlled trial
- Author
-
REITAMO, S., HARPER, J., BOS, J. D., CAMBAZARD, F., BRUIJNZEEL-KOOMEN, C., VALK, P., SMITH, C., MOSS, C., DOBOZY, A., and PALATSI, R.
- Published
- 2004
4. Demonstration of increased levels of type I collagen mRNA using quantitative polymerase chain reaction in fibrotic and granulomatous skin diseases
- Author
-
TASANEN, K., PALATSI, R., and OIKARINEN, A.
- Published
- 1998
5. Patients with male gender or greater body weight use smaller amounts of topical therapy in psoriasis
- Author
-
Kubin, M. E. (Minna E.), Pääkkö, T. J. (Tero J. W.), Hägg, P. M. (Päivi M.), Tasanen, K. (Kaisa), and Palatsi, R. (Riitta)
- Subjects
Psoriasis ,calcipotriol ,betamethasone - Abstract
Objectives and methods: Topical therapy is the first-line treatment in mild and moderate psoriasis. We performed a real-life study on topical therapies in psoriasis and observed a variation in the amounts of ointment patients applied during the study. Results: A statistically significant correlation was found between gender and the total amount of ointment used: women used more than men (p = .020). Also, heavier patients tended to use less ointment (p = .038). Conclusions: We look forward to seeing whether the current pressure to improve psoriasis treatment leads to more patients receiving systemic therapies or to better adherence to, and persistence with, topical therapies.
- Published
- 2018
6. Glukokortikoidien vaikutukset immuunipuolustukseen
- Author
-
Kubin, M. (Minna) and Palatsi, R. (Riitta)
- Abstract
Physiologically, hydrocortisone (cortisol) is produced in the adrenal cortex according to circadian rhythm. The production is upregulated in stressful situations. Cortisol and synthetic glucocorticoids change the expression of certain glucocorticoid responsive genes, but they have non-genomic effects also. The glucocorticoid receptor mediates most of the cortisol and glucocorticoid effects, and is found in all nucleated human cells. Glucocorticoids have both enhancing and suppressive effects on the immune system, and the effects are dose-dependent. Physiological doses prepare tissues for microbial infections and injuries via upregulation of PAMPs and DAMPs. Higher doses are immunosuppressive, especially Th1 and Th17 responses are inhibited whereas Th2 and Treg responses are stimulated. The effects of glucocorticoids on the immune system exhibit a wide spectrum. Tiivistelmä Fysiologisesti kortisoli erittyy vuorokausirytmin mukaisesti lisämunuaisen kuorikerroksesta, ja stressitilanteet lisäävät sen eritystä. Kortisoli ja synteettiset glukokortikoidivalmisteet vaikuttavat sekä muokkaamalla geenien luentaa että ei-genomisten mekanismien kautta. Glukokortikoidireseptori on kortisoli- ja glukokortikoidivaikutuksen pääasiallinen välittäjä, ja glukokortikoidireseptoreja löytyy kaikista ihmisen tumallisista soluista. Glukokortikoideilla on sekä immuunipuolustusta vahvistavia että sitä estäviä vaikutuksia. Annos vaikuttaa immuunivasteeseen. Fysiologiset annokset vahvistavat hahmontunnistusreseptorien ilmentymistä, mikä valmistaa kudoksia mikrobi-infektioiden ja traumojen varalle. Suuret annokset puolestaan heikentävät sytokiinisignaaleja ja immuunivastetta, mikä estää erityisesti Th1- ja Th17-auttaja-T-solujen vasteita ja suosii Th2- ja säätelijä-T-solujen vasteita, mikä johtaa immunosuppressioon. Glukokortikoidien vaikutusmekanismi immuunipuolustukseen on laajakirjoinen ja solu- ja kudosspesifinen.
- Published
- 2018
7. Isotretinoin and lymecycline treatments modify the skin microbiota in acne
- Author
-
Kelhälä, H.-L., Aho, Velma, Fyhrquist, N., Pereira, P. A. B., Kubin, M. E., Paulin, L., Palatsi, R., Auvinen, P., Tasanen, K., Lauerma, A., Kelhälä, H.-L., Aho, Velma, Fyhrquist, N., Pereira, P. A. B., Kubin, M. E., Paulin, L., Palatsi, R., Auvinen, P., Tasanen, K., and Lauerma, A.
- Published
- 2018
8. Clinical efficiency of topical calcipotriol/betamethasone treatment in psoriasis relies on suppression of the inflammatory TNFα – IL- 23 – IL-17 axis
- Author
-
Kubin, M. E. (Minna E.), Kokkonen, N. (Nina), Palatsi, R. (Riitta), Hägg, P. M. (Päivi M.), Väyrynen, J. P. (Juha P.), Glumoff, V. (Virpi), Haapasaari, K.-M. (Kirsi-Maria), Hurskainen, T. (Tiina), and Tasanen, K. (Kaisa)
- Subjects
Treg ,antimicrobial peptide ,skin-homing receptor ,CCL-20 ,glucocorticoid receptor - Abstract
The effects of topical calcipotriol/betamethasone combination therapy and betamethasone monotherapy on inflammatory T-cell numbers and molecular markers were compared in patients with psoriasis. Combination therapy down-regulated the expression of tumour necrosis factor (TNF)-α, interleukin (IL)-23A, IL-17A, S100A7, CCL-20 and interferon (IFN)-γ in skin and TNF-α, IL-6, IL-23A, T-bet and IFN-γ in peripheral blood mononuclear cells (PBMCs). Betamethasone monotherapy had less effect. Expression of FoxP3 in both skin and PBMCs was down-regulated by calcipotriol/betamethasone, but not by betamethasone. Immunohistochemical analysis revealed that calcipotriol/betamethasone reduced the numbers of CD4+ and CD8+ T cells and Tregs in psoriatic lesions more than betamethasone. Flow cytometric analyses demonstrated that calcipotriol/betamethasone decreased the numbers of circulating CD8+ T cells, Tregs, skin-homing Th17 memory cells and Th22 memory cells, while betamethasone had little or no effect. Glucocorticoid receptors GRα and GRß were expressed in psoriatic skin. In conclusion, calcipotriol increases the immunosuppressive power of betamethasone by suppressing the inflammatory TNF-α – IL-23 – IL-17 axis.
- Published
- 2017
9. Glucocorticoids:the mode of action in bullous pemphigoid
- Author
-
Kubin, M. E. (Minna E.), Hellberg, L. (Lars), Palatsi, R. (Riitta), Kubin, M. E. (Minna E.), Hellberg, L. (Lars), and Palatsi, R. (Riitta)
- Abstract
Bullous pemphigoid (BP) is the most common of pemphigoid diseases caused by autoantibodies against the structures of dermoepidermal junction followed by complement activation, innate immune cell infiltration, neutrophil proteinase secretion and subepidermal blister formation. The first‐line treatment of BP is topical and systemic glucocorticoids (GC). Regulation of the immune system and inflammatory cells is the main target of GC actions. GCs act through genomic and non‐genomic mechanisms. The human glucocorticoid receptor (GR) mediates most of the biologic effects of GC: cytosolic GR binds GCs and is capable to bind to glucocorticoid response elements in DNA and either transactivate or transrepress genes depending on the tissue and cell type. In addition, GR exerts rapid, non‐genomic effects possibly mediated by membrane‐localized receptors or by translocation to mitochondria. GCs can also interact directly with several enzymes and cytokines. As a target treatment for BP, the production of autoantibodies should be discontinued. GCs, in spite of their wide immunosuppressive actions, are weak to stop immunoglobulin G (IgG) autoantibody formation. However, both systemic and topical GCs are able to reduce the clinical symptoms of BP. GCs are used to inhibit the secondary inflammation and symptoms, such as blistering and pruritus, and it is shown that GC treatment will gradually decrease also the autoantibody formation. Our review article analyses the mode of action of GC treatment in BP, as far it is possible due to paucity of modern immunological studies.
- Published
- 2017
10. Clinical Efficiency of Topical Calcipotriol/Betamethasone Treatment in Psoriasis Relies on Suppression of the Inflammatory TNFα – IL-23 – IL-17 Axis
- Author
-
Kubin, M, primary, Kokkonen, N, additional, Palatsi, R, additional, Hägg, P, additional, Väyrynen, J, additional, Glumoff, V, additional, Haapasaari, K, additional, Hurskainen, T, additional, and Tasanen, K, additional
- Published
- 2017
- Full Text
- View/download PDF
11. The effect of systemic treatment on immune responses and skin microbiota in acne
- Author
-
Lauerma, A. (Antti), Palatsi, R. (Riitta), Tasanen-Määttä, K. (Kaisa), Kelhälä, H.-L. (Hanna-Leena), Lauerma, A. (Antti), Palatsi, R. (Riitta), Tasanen-Määttä, K. (Kaisa), and Kelhälä, H.-L. (Hanna-Leena)
- Abstract
Acne is a common skin disease that affects nearly every teenager but in some cases it persists into adulthood as a chronic disease. Acne severity ranges from mild comedonal to severe cystic and scarring disease. The pathogenesis of acne is multifactorial: increased sebum production, hormonal influences, the hypercornification of pilosebaceous ducts, overgrowth of Propionibacterium acnes (P. acnes) and inflammation around pilosebaceous follicles are considered to be the main pathogenetic factors but few further details are known. The role of innate immunity in the pathogenesis of acne has been studied quite extensively, but the contribution of adaptive immune responses is not well characterized. Although isotretinoin has been the most potent medication for acne over 30 years, its mode of action is partially unknown. Furthermore, modern 16S ribosomal RNA (rRNA) gene amplicon sequencing based methods allow quantification of the abundance of skin bacteria, but these culture-independent techniques have not yet been used to assess the effect of systemic treatments, isotretinoin and tetracycline antibiotics on acne skin microbiota. In this study the innate and adaptive immune responses in the skin of acne patients were investigated. Skin biopsies were taken from early-stage acne lesions and from uninvolved skin of acne patients, and the samples were examined for the expression of cytokines, chemokines, transcription factors and antimicrobial peptides, using real-time polymerase chain reaction (PCR). In addition, the skin biopsies were examined by immunohistochemistry and Luminex technology, which was also used in the determination of cytokine levels in acne patients’ serum samples. The skin microbiota of swab samples was investigated using 16S rRNA gene amplicon sequencing. We found that innate and adaptive immune responses, in particular the activation of the IL-17/Th17 axis, are involved in early-stage acne lesions. Furthermore, the expression of effector cytoki, Tiivistelmä Akne on yleinen ihosairaus, joka koskettaa lähes jokaista teini-iässä ja jatkuu osalla kroonisena sairautena läpi aikuisiän. Aknen vaikeusaste vaihtelee lievästä vaikeisiin, arpeuttaviin tautimuotoihin. Aknen patogeneesin tiedetään olevan monitekijäinen. Tärkeimmät aknen syntyyn vaikuttavat tekijät ovat lisääntynyt talineritys hormonien, erityisesti androgeenien vaikutuksesta, talirauhaskarvatuppitiehyen tukkeutuminen, Propionibacterium acnes (P. acnes) – bakteerin liikakasvu sekä tulehdusreaktio talirauhaskarvatupen ympärillä. Synnynnäisen immuniteetin roolia aknen synnyssä on tutkittu paljon, sen sijaan hankittua immuniteettia huomattavasti vähemmän. Myöskään yli 30 vuotta käytössä olleen tehokkaimman aknelääkkeen, isotretinoiinin, vaikutusmekanismia ei täysin tiedetä. Lisäksi systeemilääkkeiden, isotretinoiinin ja tetrasykliiniryhmän antibioottien, vaikutusta akneihon bakteeristoon ei ole tutkittu moderneilla, polymeraasiketjututkimuksiin (PCR) perustuvilla menetelmillä. Tässä tutkimuksessa selvitettiin synnynnäisiä ja hankittuja immuunireaktiota aknea sairastavien ihossa ja isotretinoiinin vaikutusta näihin reaktioihin. Tutkimuksessa hyödynnettiin aknepotilaiden ihokoepaloja, joista tutkittiin sytokiinien, kemokiinien, transkriptiotekijöiden sekä antimikrobisten peptidien ilmentymistä reaaliaikaisella PCR-menetelmällä. Lisäksi ihokoepaloja tutkittiin immunohistokemiallisilla värjäyksillä ja Luminex-menetelmällä, jota hyödynnettiin myös sytokiini-tasojen määrittämiseen aknepotilaiden seeruminäytteistä. Aknea sairastavien ihon bakteeristoa tutkittiin 16S ribosomaalisen RNA:n geenien sekvensointiin pohjautuvalla menetelmällä. Väitöstutkimuksessa havaitsimme, että varhaisvaiheen aknemuutoksessa käynnistyvät sekä synnynnäisen että hankitun immuniteetin vasteet. Erityisesti IL-17/Th17-akseli on aktivoitunut. Lisäksi aknea sairastavien terveellä iholla tulehduksen välittäjäaineen TGF-1β ja transkriptiotekijän FoxP3 ilmeneminen oli alentunut verrattuna
- Published
- 2016
12. 423 Isotretinoin and lymecycline treatments modify the skin microbiota in acne
- Author
-
Kelhälä, H., primary, Aho, V., additional, Fyhrquist, N., additional, Pereira, P., additional, Kubin, M., additional, Paulin, L., additional, Palatsi, R., additional, Auvinen, P., additional, Tasanen, K., additional, and Lauerma, A., additional
- Published
- 2016
- Full Text
- View/download PDF
13. 0.03% tacrolimus ointment applied once or twice daily is more efficacious than 1% hydrocortisone acetate in children with moderate to severe atopic dermatitis: results of a randomized double-blind controlled trial
- Author
-
Roseeuw, Diane, Reitamo, S., Harper, J., Bos, J.d., Cambazard, F., Bruynzeel-Koomen, C., Valk, P., Smitz, C., Moss, C., Dobozy, A., Palatsi, R., De Raeve, L., Specialities, Vrije Universiteit Brussel, Surgical clinical sciences, and Skin function and permeability
- Published
- 2004
14. Long-term safety and efficacy of tacrolimus ointment for the treatment of atopic dermatitis in children.
- Author
-
Remitz, A., Harper, J., Rustin, M., Goldschmidt, W., Palatsi, R., Valk, P.G.M. van der, Sharpe, G., Smith, C.H., Dobozy, A., Turjanmaa, K., Remitz, A., Harper, J., Rustin, M., Goldschmidt, W., Palatsi, R., Valk, P.G.M. van der, Sharpe, G., Smith, C.H., Dobozy, A., and Turjanmaa, K.
- Abstract
Contains fulltext : 53193.pdf (publisher's version ) (Open Access), Tacrolimus ointment is a topical calcineurin inhibitor for the treatment of atopic dermatitis. The primary objective of this open-label study was to assess the long-term safety of tacrolimus ointment. The primary end-point was the incidence of adverse events. Secondary end-points included the Eczema Area and Severity Index and a modified version of this index. A total of 466 children with atopic dermatitis, aged 2-15 years, applied 0.03% or 0.1% tacrolimus ointment twice daily for up to 29.5 months. Skin burning and pruritus were the most common application site events; their prevalence decreased over time. There was no increase in viral infections or other adverse events over time. Laboratory profiles were consistent with those reported in atopic populations. Substantial improvement in all efficacy end-points was observed by week 2 and maintained throughout the study. Long-term treatment with tacrolimus ointment is safe and effective in these patients with atopic dermatitis.
- Published
- 2007
15. Increased expression of glucocorticoid receptor β in lymphocytes of patients with severe atopic dermatitis unresponsive to topical corticosteroid
- Author
-
Hägg, P.M., primary, Hurskainen, T., additional, Palatsi, R., additional, Ilves, M., additional, and Oikarinen, A., additional
- Published
- 2009
- Full Text
- View/download PDF
16. Long-term Safety and Efficacy of Tacrolimus Ointment for the Treatment of Atopic Dermatitis in Children
- Author
-
Remitz, A, primary, Harper, J, additional, Rustin, M, additional, Goldschmidt, WFM, additional, Palatsi, R, additional, van der Valk, PGM, additional, Sharpe, G, additional, Smith, CH, additional, Dobozy, A, additional, and Turjanmaa, K, additional
- Published
- 2007
- Full Text
- View/download PDF
17. Therapeutics 0·03% tacrolimus ointment applied once or twice daily is more efficacious than 1% hydrocortisone acetate in children with moderate to severe atopic dermatitis: results of a randomized double-blind controlled trial.
- Author
-
Reitamo, S., Harper, J., Bos, J.D., Cambazard, F., Bruijnzeel-Koomen, C., Valk, P., Smith, C., Moss, C., Dobozy, A., and Palatsi, R.
- Subjects
ATOPIC dermatitis ,TACROLIMUS ,HYDROCORTISONE ,SKIN inflammation ,CLINICAL trials ,DERMATOLOGY - Abstract
Topical corticosteroids are the usual treatment for atopic dermatitis (AD) in children but can have side-effects. This study compared the efficacy and safety of 0·03% tacrolimus ointment applied once or twice daily over a 3-week period with the twice daily application of 1% hydrocortisone acetate (HA) ointment in children with moderate to severe AD. Patients applied ointment daily to all affected body surface areas. The primary study endpoint was the percentage change in the modified Eczema Area and Severity Index (mEASI) between baseline and treatment end. Six hundred and twenty-four patients, aged 2–15 years, applied 0·03% tacrolimus ointment once daily ( n = 207), twice daily ( n = 210) or 1% HA twice daily ( n = 207). By the end of treatment, application of 0·03% tacrolimus ointment both once or twice daily resulted in significantly greater median percentage decreases in mEASI (66·7% and 76·7%, respectively) compared with 1% HA (47·6%; P < 0·001). Furthermore, the median percentage decrease in mEASI was significantly greater for patients applying 0·03% tacrolimus twice daily compared with once daily ( P = 0·007). Patients with severe AD benefited especially from twice daily application of 0·03% tacrolimus ointment compared with once daily application ( P = 0·001). Transient mild to moderate skin burning occurred significantly more often in the 0·03% tacrolimus groups ( P = 0·028) but resolved in most cases within 3–4 days. Laboratory parameters showed no clinically relevant changes. 0·03% tacrolimus ointment applied once or twice daily is significantly more efficacious than 1% HA in treating moderate–severe AD in children. Twice daily application of 0·03% tacrolimus ointment results in the greatest improvement in mEASI, and is especially effective in patients with severe baseline disease. [ABSTRACT FROM AUTHOR]
- Published
- 2004
- Full Text
- View/download PDF
18. Types I and III collagens and the activities of prolyl hydroxylase and galactosylhydroxylysyl glucosyltransferase in skin lesions of tuberous sclerosis.
- Author
-
Oikarinen, A., Palatsi, R., Linna, S. L., and Peltonen, L.
- Subjects
COLLAGEN ,TUBEROUS sclerosis ,NEUROLOGICAL disorders ,NEUROLOGY ,INTELLECTUAL disabilities ,DEVELOPMENTAL disabilities - Abstract
Collagen synthesis and the ratios of collagen types I and I I I were assayed from the skin lesions of five subjects with tuberous sclerosis. Collagen synthesis, measured by the activities of prolyl hydroxylase and galactosylhydroxylysyl glucosyltransferase, was clearly increased in three angiofibromas of these patients and in one soft tumour of the face, but it was unchanged in shagreen patches. The total collagen content was decreased in angiofibromas, indicating either increased turnover of collagen or an increased amount of cellular or other macromolecular elements in these lesions. The proportions of types I and III collagens, estimated by cyanogenbromide digestion and SDS-gel electrophoresis, were 80–90%) and 10–20%, respectively, in all samples except two angiofibromas, in which the relative amount of type III collagen was increased. This may indicate that angiofibromas of tuberous sclerosis are heterogenous with respect to the collagen types they contain, and that there may be disturbed cell growth or collagen synthesis, with individual variation from case to case. [ABSTRACT FROM AUTHOR]
- Published
- 1982
- Full Text
- View/download PDF
19. Serum steroid sulphates in ichthyosis.
- Author
-
Ruokonen, A., Oikarinen, A., Palatsi, R., and Huhtaniemi, I.
- Subjects
SERUM ,STEROIDS ,ICHTHYOSIS ,SULFATES ,DERMATOLOGY - Abstract
Serum concentrations of pregnenolone sulphate, dehydroepiandrosterone sulphate and 5-androstene- 3β,17β-diol sulphate were measured by radioimmunoassays in twelve patients with various types of ichthyosis. In X-linked ichthyosis (n = 5), ichthyosis vulgaris (n = 5) and lamellar ichthyosis (n = 1), steroid sulphates were not significantly higher than in the control subjects. In one baby with ichthyosiform erythroderma and associated deafness serum 5 -androstene-3β,17β-diol sulphate concentration was about 60 fold higher (31 μg/ml) than the mean of the control children. The other steroid sulphate levels were normal in this baby. These results indicate that it is not possible to demonstrate the steroid sulphatase deficiency in X-linked ichthyosis by determining blood steroid sulphates. The cause of the high 5-androstene- 3β,17β-diol sulphate concentration in the baby with ichthyosiform cerythroderma needs further evaluation. [ABSTRACT FROM AUTHOR]
- Published
- 1980
- Full Text
- View/download PDF
20. Pituitary function and DHEA-S in male acne and DHEA-S, prolactin and cortisol before and after oral contraceptive treatment in female acne
- Author
-
Palatsi, R, primary, Reinilä, M, additional, and Kivinén, S., additional
- Published
- 1986
- Full Text
- View/download PDF
21. Serum total and unbound testosterone and sex hormone binding globulin (SHBG) in female acne patients treated with two different oral contraceptives
- Author
-
Palatsi, R, primary, Hirvensalo, E, additional, Liukko, P, additional, Malmiharju, T, additional, Mattila, L, additional, Riihiluoma, P, additional, and Ylöstalo, P., additional
- Published
- 1984
- Full Text
- View/download PDF
22. Solitary angiokeratoma of the tongue.
- Author
-
Siponen M, Penna T, Apaja-Sarkkinen M, Palatsi R, and Salo T
- Abstract
Angiokeratoma is a rare, cutaneous vascular disorder that can occur in several clinically distinct conditions. It usually presents as multiple, red to blue or black, asymptomatic papules on the skin. Oral mucosal involvement is common in the systemic form, but very rare in the localized forms of angiokeratomas. We report the second case of a solitary papular angiokeratoma of the oral cavity. [ABSTRACT FROM AUTHOR]
- Published
- 2006
- Full Text
- View/download PDF
23. The effect of systemic treatment on immune responses and skin microbiota in acne
- Author
-
Kelhälä, H.-L. (Hanna-Leena), Lauerma, A. (Antti), Palatsi, R. (Riitta), and Tasanen-Määttä, K. (Kaisa)
- Subjects
tetrasykliini ,isotretinoiini ,synnynnäinen immuniteetti ,isotretinoin ,adaptive immunity ,hankittu immuniteetti ,propionibakteeri ,akne ,microbiota ,mikrobiomi ,Propionibacterium acnes ,acne ,innate immunity ,tetracycline - Abstract
Acne is a common skin disease that affects nearly every teenager but in some cases it persists into adulthood as a chronic disease. Acne severity ranges from mild comedonal to severe cystic and scarring disease. The pathogenesis of acne is multifactorial: increased sebum production, hormonal influences, the hypercornification of pilosebaceous ducts, overgrowth of Propionibacterium acnes (P. acnes) and inflammation around pilosebaceous follicles are considered to be the main pathogenetic factors but few further details are known. The role of innate immunity in the pathogenesis of acne has been studied quite extensively, but the contribution of adaptive immune responses is not well characterized. Although isotretinoin has been the most potent medication for acne over 30 years, its mode of action is partially unknown. Furthermore, modern 16S ribosomal RNA (rRNA) gene amplicon sequencing based methods allow quantification of the abundance of skin bacteria, but these culture-independent techniques have not yet been used to assess the effect of systemic treatments, isotretinoin and tetracycline antibiotics on acne skin microbiota. In this study the innate and adaptive immune responses in the skin of acne patients were investigated. Skin biopsies were taken from early-stage acne lesions and from uninvolved skin of acne patients, and the samples were examined for the expression of cytokines, chemokines, transcription factors and antimicrobial peptides, using real-time polymerase chain reaction (PCR). In addition, the skin biopsies were examined by immunohistochemistry and Luminex technology, which was also used in the determination of cytokine levels in acne patients’ serum samples. The skin microbiota of swab samples was investigated using 16S rRNA gene amplicon sequencing. We found that innate and adaptive immune responses, in particular the activation of the IL-17/Th17 axis, are involved in early-stage acne lesions. Furthermore, the expression of effector cytokine TGF-β and transcription factor of regulatory T cells (Tregs) FoxP3 mRNA was reduced in acne patients’ uninvolved skin compared to normal skin of healthy controls. Isotretinoin has no direct effect on innate and adaptive immune responses in newly formed acne lesions. It did, however, modify some innate immune responses: the expression of IL-1β and toll-like receptor 2 (TLR2) mRNA was reduced in uninvolved skin of acne patients, and the number of CD68+ macrophages increased in acne patients’ skin with isotretinoin treatment. After six weeks’ treatment, the abundance of P. acnes was similarly reduced with either isotretinoin or lymecycline treatment. However, previous studies and clinical experience show that isotretinoin is more clinically effective against acne than tetracyclines, probably because of the effect of isotretinoin on sebaceous glands and sebum excretion. Acne is a disease, which at its worst results in significant scarring. Therefore it is important to understand the immunological factors behind its pathogenesis. Our findings show that both adaptive and innate immunity play an important role. Isotretinoin, although currently the most potent anti-acne drug, does not directly affect the adaptive immune response and therefore new medications are required to control the relevant immune responses, especially in severe cystic or fulminant acne. Tiivistelmä Akne on yleinen ihosairaus, joka koskettaa lähes jokaista teini-iässä ja jatkuu osalla kroonisena sairautena läpi aikuisiän. Aknen vaikeusaste vaihtelee lievästä vaikeisiin, arpeuttaviin tautimuotoihin. Aknen patogeneesin tiedetään olevan monitekijäinen. Tärkeimmät aknen syntyyn vaikuttavat tekijät ovat lisääntynyt talineritys hormonien, erityisesti androgeenien vaikutuksesta, talirauhaskarvatuppitiehyen tukkeutuminen, Propionibacterium acnes (P. acnes) -bakteerin liikakasvu sekä tulehdusreaktio talirauhaskarvatupen ympärillä. Synnynnäisen immuniteetin roolia aknen synnyssä on tutkittu paljon, sen sijaan hankittua immuniteettia huomattavasti vähemmän. Myöskään yli 30 vuotta käytössä olleen tehokkaimman aknelääkkeen, isotretinoiinin, vaikutusmekanismia ei täysin tiedetä. Lisäksi systeemilääkkeiden, isotretinoiinin ja tetrasykliiniryhmän antibioottien, vaikutusta akneihon bakteeristoon ei ole tutkittu moderneilla, polymeraasiketjututkimuksiin (PCR) perustuvilla menetelmillä. Tässä tutkimuksessa selvitettiin synnynnäisiä ja hankittuja immuunireaktiota aknea sairastavien ihossa ja isotretinoiinin vaikutusta näihin reaktioihin. Tutkimuksessa hyödynnettiin aknepotilaiden ihokoepaloja, joista tutkittiin sytokiinien, kemokiinien, transkriptiotekijöiden sekä antimikrobisten peptidien ilmentymistä reaaliaikaisella PCR-menetelmällä. Lisäksi ihokoepaloja tutkittiin immunohistokemiallisilla värjäyksillä ja Luminex-menetelmällä, jota hyödynnettiin myös sytokiini-tasojen määrittämiseen aknepotilaiden seeruminäytteistä. Aknea sairastavien ihon bakteeristoa tutkittiin 16S ribosomaalisen RNA:n geenien sekvensointiin pohjautuvalla menetelmällä. Väitöstutkimuksessa havaitsimme, että varhaisvaiheen aknemuutoksessa käynnistyvät sekä synnynnäisen että hankitun immuniteetin vasteet. Erityisesti IL-17/Th17-akseli on aktivoitunut. Lisäksi aknea sairastavien terveellä iholla tulehduksen välittäjäaineen TGF-1β ja transkriptiotekijän FoxP3 ilmeneminen oli alentunut verrattuna terveihoisiin kontrolleihin. Isotretinoiinilla ei ole suoraa vaikutusta synnynnäisen ja hankitun immuniteetin reaktioihin jo olemassa olevissa varhaisen vaiheen aknemuutoksissa. Aknea sairastavien terveessä ihossa isotretinoiini muokkasi luontaisen immuniteetin vasteita mm. vähentämällä tollin kaltaisen reseptorin (TLR)- 2 ja tulehduksen välittäjäaineen IL-11β ilmenemistä sekä lisäämällä makrofagien kertymistä tulehduspaikalle. Kuuden viikon hoito isotretinoiinilla tai lymesykliinillä vähentää yhtä tehokkaasti aknealueilla P. acnes -bakteerin suhteellista osuutta ihon bakteeristosta. Isotretinoiini on kuitenkin antibiootteja tehokkaampi aknelääke ja lisäksi hoitovaste saavutetaan pitemmäksi aikaa, mikä johtunee isotretinoiinin vaikutuksesta talirauhasiin ja talinerityksen vähentämisestä. Aknen tulehdusmekanismien ymmärtäminen on tärkeää taudissa, joka pahimmillaan johtaa merkittävään arpeutumiseen. Tutkimuksemme perusteella hankittu immuniteetti on tärkeässä roolissa synnynnäisen immuniteetin aktivoitumisen rinnalla aknen synnyssä. Tehokkain aknelääke, isotretinoiini ei vaikuta hankittuun immuunivasteeseen, minkä vuoksi jatkossa tarvitaan uusia lääkkeitä isotretinoiinin rinnalle tulehduksen nopeaan hillitsemiseen vaikeissa aknemuodoissa.
- Published
- 2016
24. Patients with male gender or greater body weight use smaller amounts of topical therapy in psoriasis.
- Author
-
Kubin ME, Pääkkö TJW, Hägg PM, Tasanen K, and Palatsi R
- Subjects
- Administration, Topical, Adult, Betamethasone chemistry, Betamethasone therapeutic use, Body Weight, Calcitriol chemistry, Calcitriol therapeutic use, Dermatologic Agents chemistry, Drug Administration Schedule, Female, Humans, Male, Middle Aged, Ointments chemistry, Ointments therapeutic use, Psoriasis pathology, Severity of Illness Index, Sex Factors, Young Adult, Dermatologic Agents therapeutic use, Psoriasis drug therapy
- Abstract
Objectives and Methods: Topical therapy is the first-line treatment in mild and moderate psoriasis. We performed a real-life study on topical therapies in psoriasis and observed a variation in the amounts of ointment patients applied during the study., Results: A statistically significant correlation was found between gender and the total amount of ointment used: women used more than men (p = .020). Also, heavier patients tended to use less ointment (p = .038)., Conclusions: We look forward to seeing whether the current pressure to improve psoriasis treatment leads to more patients receiving systemic therapies or to better adherence to, and persistence with, topical therapies.
- Published
- 2018
- Full Text
- View/download PDF
25. Isotretinoin and lymecycline treatments modify the skin microbiota in acne.
- Author
-
Kelhälä HL, Aho VTE, Fyhrquist N, Pereira PAB, Kubin ME, Paulin L, Palatsi R, Auvinen P, Tasanen K, and Lauerma A
- Subjects
- Adolescent, Adult, Anti-Bacterial Agents therapeutic use, Female, Humans, Male, Microbiota, Propionibacterium acnes, RNA, Ribosomal, 16S metabolism, Streptococcus, Young Adult, Acne Vulgaris drug therapy, Acne Vulgaris microbiology, Isotretinoin therapeutic use, Lymecycline therapeutic use, Skin drug effects, Skin microbiology
- Abstract
Oral retinoids and tetracyclines have a major role in acne treatment. Here, we report for the first time the effect of isotretinoin and lymecycline therapy on the skin microbiota in cheek, back and armpit swab samples of acne vulgaris patients using 16S ribosomal RNA (16S rRNA) gene amplicon sequencing. Propionibacterium acnes was the most common in sebaceous areas of healthy and untreated acne skin and more abundant in back than cheek samples. Five taxa, including a Streptococcus taxon, differed significantly between the cheek samples of healthy controls and acne patients, and acne severity was positively correlated with the abundance of Propionibacterium. Both treatments reduced clinical acne grades and the abundance of Propionibacterium, while the abundance of several other taxa was significantly higher in treated cheek samples compared with untreated ones. Less variation was observed in back samples and none in armpit samples. There were no differences in alpha diversity between control and acne patients in any of the sampled skin areas, but the diversity of the microbiota on the cheek and the back was significantly increased after acne treatments. This study provides insight into the skin microbiota in acne and how it is modulated by systemic acne treatment., (© 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2018
- Full Text
- View/download PDF
26. Glucocorticoids: The mode of action in bullous pemphigoid.
- Author
-
Kubin ME, Hellberg L, and Palatsi R
- Subjects
- Humans, Pemphigoid, Bullous immunology, Glucocorticoids pharmacology, Glucocorticoids therapeutic use, Immune System drug effects, Pemphigoid, Bullous drug therapy
- Abstract
Bullous pemphigoid (BP) is the most common of pemphigoid diseases caused by autoantibodies against the structures of dermoepidermal junction followed by complement activation, innate immune cell infiltration, neutrophil proteinase secretion and subepidermal blister formation. The first-line treatment of BP is topical and systemic glucocorticoids (GC). Regulation of the immune system and inflammatory cells is the main target of GC actions. GCs act through genomic and non-genomic mechanisms. The human glucocorticoid receptor (GR) mediates most of the biologic effects of GC: cytosolic GR binds GCs and is capable to bind to glucocorticoid response elements in DNA and either transactivate or transrepress genes depending on the tissue and cell type. In addition, GR exerts rapid, non-genomic effects possibly mediated by membrane-localized receptors or by translocation to mitochondria. GCs can also interact directly with several enzymes and cytokines. As a target treatment for BP, the production of autoantibodies should be discontinued. GCs, in spite of their wide immunosuppressive actions, are weak to stop immunoglobulin G (IgG) autoantibody formation. However, both systemic and topical GCs are able to reduce the clinical symptoms of BP. GCs are used to inhibit the secondary inflammation and symptoms, such as blistering and pruritus, and it is shown that GC treatment will gradually decrease also the autoantibody formation. Our review article analyses the mode of action of GC treatment in BP, as far it is possible due to paucity of modern immunological studies., (© 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2017
- Full Text
- View/download PDF
27. Isotretinoin treatment reduces acne lesions but not directly lesional acne inflammation.
- Author
-
Kelhälä HL, Fyhrquist N, Palatsi R, Lehtimäki S, Väyrynen JP, Kubin ME, Kallioinen M, Alenius H, Tasanen K, and Lauerma A
- Subjects
- Acne Vulgaris blood, Administration, Oral, Adolescent, Adult, Cytokines blood, Dermatologic Agents pharmacology, Female, Humans, Isotretinoin pharmacology, Male, Skin immunology, Skin metabolism, Young Adult, Acne Vulgaris drug therapy, Dermatologic Agents therapeutic use, Isotretinoin therapeutic use, Skin drug effects
- Published
- 2016
- Full Text
- View/download PDF
28. Antimicrobial peptides - a part of innate immunity.
- Author
-
Palatsi R and Kelhälä HL
- Subjects
- Diabetes Mellitus, Type 2 immunology, Humans, Neurodegenerative Diseases immunology, Antimicrobial Cationic Peptides immunology, Antimicrobial Cationic Peptides pharmacology, Immunity, Innate, Immunotherapy methods
- Abstract
Antimicrobial peptides (AMP) are evolutionary ancient molecules produced by nearly all living organisms, both prokaryotic and eukaryotic cells. More than 2000 AMPs have now been identified. These peptides are produced by most human cell types, such as those in the skin and mucous membranes and blood. Each tissue has a different spectrum of AMPs. Antimicrobial capacity depends on the structural characteristics such as charge and amphiphilicity that allow the insertion and/or penetration of AMP into the membranes of microorganisms or other cells. AMPs may have importance in the pathogenesis of neurodegenerative diseases and type 2 diabetes. The most investigated AMPs are defensins and cathelicidin LL-37.
- Published
- 2016
29. IL-17/Th17 pathway is activated in acne lesions.
- Author
-
Kelhälä HL, Palatsi R, Fyhrquist N, Lehtimäki S, Väyrynen JP, Kallioinen M, Kubin ME, Greco D, Tasanen K, Alenius H, Bertino B, Carlavan I, Mehul B, Déret S, Reiniche P, Martel P, Marty C, Blume-Peytavi U, Voegel JJ, and Lauerma A
- Subjects
- Acne Vulgaris genetics, Acne Vulgaris pathology, Adaptive Immunity, Biomarkers metabolism, Cell Differentiation, Cell Lineage, Chemokines genetics, Chemokines metabolism, Gene Expression Regulation, Humans, RNA metabolism, Transcriptome, Acne Vulgaris immunology, Interleukin-17 metabolism, Th17 Cells metabolism
- Abstract
The mechanisms of inflammation in acne are currently subject of intense investigation. This study focused on the activation of adaptive and innate immunity in clinically early visible inflamed acne lesions and was performed in two independent patient populations. Biopsies were collected from lesional and non-lesional skin of acne patients. Using Affymetrix Genechips, we observed significant elevation of the signature cytokines of the Th17 lineage in acne lesions compared to non-lesional skin. The increased expression of IL-17 was confirmed at the RNA and also protein level with real-time PCR (RT-PCR) and Luminex technology. Cytokines involved in Th17 lineage differentiation (IL-1β, IL-6, TGF-β, IL23p19) were remarkably induced at the RNA level. In addition, proinflammatory cytokines and chemokines (TNF-α, IL-8, CSF2 and CCL20), Th1 markers (IL12p40, CXCR3, T-bet, IFN-γ), T regulatory cell markers (Foxp3, IL-10, TGF-β) and IL-17 related antimicrobial peptides (S100A7, S100A9, lipocalin, hBD2, hBD3, hCAP18) were induced. Importantly, immunohistochemistry revealed significantly increased numbers of IL-17A positive T cells and CD83 dendritic cells in the acne lesions. In summary our results demonstrate the presence of IL-17A positive T cells and the activation of Th17-related cytokines in acne lesions, indicating that the Th17 pathway is activated and may play a pivotal role in the disease process, possibly offering new targets of therapy.
- Published
- 2014
- Full Text
- View/download PDF
30. [New insights in the pathogenesis and treatment of rosacea].
- Author
-
Palatsi R, Kelhälä HL, and Hägg P
- Subjects
- Anti-Bacterial Agents administration & dosage, Cholecalciferol metabolism, Dermatologic Agents administration & dosage, Doxycycline administration & dosage, Humans, Isotretinoin administration & dosage, Keratinocytes metabolism, Multicenter Studies as Topic, Toll-Like Receptor 2 metabolism, Ultraviolet Rays adverse effects, Cathelicidins, Anti-Bacterial Agents therapeutic use, Antimicrobial Cationic Peptides metabolism, Dermatologic Agents therapeutic use, Doxycycline therapeutic use, Isotretinoin therapeutic use, Rosacea drug therapy, Rosacea metabolism
- Abstract
The production of cathelicidin, an antimicrobial peptide is strongly increased in rosacea. Cathelicidin activates innate immunity, inflammation and angiogenesis. Cutaneous proteases produce inflammatory fragments of cathelicidin. UV-B irradiation and microbial components increase vitamin D3 and TLR2 expression in keratinocytes leading to an increase of cathelicidin production. Retinoids and doxycycline inhibit inflammation, proteases, angiogenesis and TLR2 expression. A multicenter study 2010 proved that isotretinoin with a dose of 0,3 mg/kg/d for 12 weeks and doxycycline with the dose of 100 mg/d for 14 days followed with 50 mg/d were equally effective. Doxycycline 40 mg/d is also effective in milder cases.
- Published
- 2012
31. [The immune response against microbial infections in the skin--weak in atopic dermatitis and strong in psoriasis].
- Author
-
Palatsi R and Hägg P
- Subjects
- Adaptive Immunity, Dendritic Cells immunology, Humans, Immunity, Innate, Interleukin-23 immunology, Receptors, Lymphocyte Homing immunology, T-Lymphocytes immunology, Th17 Cells immunology, Toll-Like Receptors immunology, Dermatitis, Atopic immunology, Psoriasis immunology, Skin Diseases, Bacterial immunology
- Abstract
The innate and adaptive immune responses have been better understood after the discovery of Toll-like receptors (TLRs), antimicrobial peptides and different populations of dendritic cells. In the skin there are 1 million T-cells per 1 cm2 and 20 billion in total. Naive T-cells activated by antigen-presenting cells can polarize in four directions and they express homing receptor CLA for operating in the skin when the antigen is first detected in the skin area. In psoriasis Th17 activation increases antimicrobial peptides. The IL-23/Th17 axis is largely absent in atopic dermatitis and may result in infections.
- Published
- 2011
32. Increased expression of glucocorticoid receptor beta in lymphocytes of patients with severe atopic dermatitis unresponsive to topical corticosteroid.
- Author
-
Hägg PM, Hurskainen T, Palatsi R, Ilves M, and Oikarinen A
- Subjects
- Administration, Topical, Adult, Dermatitis, Atopic metabolism, Drug Resistance, Female, Humans, Lymphocytes metabolism, Male, Middle Aged, RNA, Messenger metabolism, Reverse Transcriptase Polymerase Chain Reaction, Statistics as Topic, Young Adult, Adrenal Cortex Hormones administration & dosage, Dermatitis, Atopic drug therapy, Dermatologic Agents administration & dosage, Lymphocytes drug effects, Receptors, Glucocorticoid metabolism
- Abstract
Background: Variable response to topical glucocorticoid therapy occurs in the treatment of severe atopic dermatitis (AD). Glucocorticoid receptor (GR)-beta does not bind glucocorticoids but antagonizes the activity of the classic GRalpha, and could thus account for glucocorticoid insensitivity., Objectives: To investigate GRalpha and GRbeta mRNA and protein expression in lymphocytes of patients with AD before and after treatment with topical corticosteroids., Methods: Blood was collected from 11 healthy donors, 10 patients with mild AD and 13 patients with severe AD. mRNA was isolated from peripheral blood mononuclear cells. Expression of GRalpha and GRbeta mRNA was determined by reverse transcriptase-polymerase chain reaction and quantitated. Expression of the GRs was confirmed by Western blot analysis., Result: The expression of GRalpha mRNA was detected in all subjects. GRbeta mRNA was detected in four out of 11 healthy volunteers, five out of 10 patients with mild AD and 11 out of 13 patients with severe AD. The incidence of GRbeta mRNA expression was higher in patients with severe AD (85%) than in patients with mild AD (50%), and significantly higher than in healthy volunteers (36%, P = 0.033). Four of the 13 patients with severe AD showed a 3.3-13.2-fold increase in the expression of GRbeta mRNA during a 2-week treatment with topical corticosteroids. In these patients the response to topical corticosteroids was poor., Conclusions: Expression of GRbeta is increased during topical corticosteroid treatment in the lymphocytes of patients with AD and, in particular, glucocorticoid-insensitive AD is associated with increased expression of GRbeta.
- Published
- 2010
- Full Text
- View/download PDF
33. Isotretinoin, tetracycline and circulating hormones in acne.
- Author
-
Palatsi R, Ruokonen A, and Oikarinen A
- Subjects
- Acne Vulgaris metabolism, Adolescent, Adult, Anti-Bacterial Agents pharmacology, Female, Gonadal Steroid Hormones biosynthesis, Humans, Isotretinoin pharmacology, Keratolytic Agents pharmacology, Male, Oxidoreductases drug effects, Steroids biosynthesis, Tetracycline pharmacology, Acne Vulgaris drug therapy, Anti-Bacterial Agents therapeutic use, Gonadal Steroid Hormones blood, Isotretinoin therapeutic use, Keratolytic Agents therapeutic use, Steroids blood, Tetracycline therapeutic use
- Abstract
Isotretinoin, used to treat severe acne, has been shown to induce hormonal changes, especially to reduce 5 alpha-reductase in the production of the tissue-derived dihydrotestosterone (DHT) metabolite 3 alpha-Adiol G. However, the effects of isotretinoin on other pituitary, adrenal or gonadal hormones have not been thoroughly elucidated. In the present study, isotretinoin administered at a dose of 0.5 mg/kg/day for 4 weeks caused no marked changes in the serum levels of pituitary, adrenal or gonadal hormones or 3 alpha-Adiol G in patients with severe papulopustulotic acne (n = 19). After 12 weeks of therapy, there was a decrease in the levels of the precursor androgens androstenedione, testosterone and 3 alpha-Adiol G in 6/9 patients. Acne improved after 4.5 months in all but 2 male patients, who had very low serum hormone binding globulins (SHBG) and a high free androgen index (FAI). Isotretinoin did not affect the elevated LH/FSH ratio in a patient with the polycystic ovarian syndrome (PCOS); nor did it change the high FAI or low SHBG in the male patients. For comparison, tetracycline had no effects on the serum hormonal levels of patients with mild acne (n = 19) after 7 days of treatment. This study confirms that the effects of isotretinoin on the serum hormone levels are small and unlikely to be of relevance for the resolution of acne or the suppression of sebum excretion.
- Published
- 1997
- Full Text
- View/download PDF
34. A homozygous nonsense mutation and a combination of two mutations of the Wilson disease gene in patients with different lysyl oxidase activities in cultured fibroblasts.
- Author
-
Kemppainen R, Palatsi R, Kallioinen M, and Oikarinen A
- Subjects
- Adult, Blotting, Northern, Codon, Nonsense, Exons, Humans, Male, Middle Aged, Fibroblasts enzymology, Hepatolenticular Degeneration genetics, Point Mutation, Protein-Lysine 6-Oxidase metabolism
- Abstract
Wilson disease is a rare autosomal recessive disease of copper metabolism. The gene for Wilson disease was characterized recently and has been predicted to encode a copper-transporting ATPase highly homologous to the protein encoded by the gene of Menkes disease. In this study, the genetic mutations of two Finnish patients with Wilson disease were investigated. One patient was homozygous for a novel nonsense mutation in exon 4, while the other was a compound heterozygote. Lysyl oxidase (EC 1.4.3.13) is an extracellular copper enzyme with deficient activity in Menkes disease. The levels of lysyl oxidase activity in cultured skin fibroblasts from these Wilson disease patients were also measured.
- Published
- 1997
- Full Text
- View/download PDF
35. Quantification of Pro alpha 1(I) collagen mRNA in skin biopsy specimens: levels of transcription in normal skin and in granuloma annulare.
- Author
-
Tasanen K, Hämäläinen ER, Palatsi R, and Oikarinen A
- Subjects
- Adult, Base Sequence, Biopsy, Child, Preschool, Female, Humans, Infant, Male, Middle Aged, Molecular Probes genetics, Molecular Sequence Data, Polymerase Chain Reaction, Reference Values, Skin pathology, Collagen genetics, Granuloma Annulare genetics, Procollagen genetics, RNA, Messenger analysis, Skin metabolism, Transcription, Genetic
- Abstract
The synthesis of type I collagen, the major component of the skin, is known to be modulated in aging and in various skin diseases and treatments. In vivo analysis of type I collagen expression, however, is difficult because of the low cell density of the dermis and the small amount of RNA obtainable from skin biopsy specimens. We present here a quantitative polymerase chain reaction method for the quantification of pro alpha 1(I) collagen mRNA in skin punch biopsy specimens. The targeted mRNA and a synthetic RNA as an internal standard were co-amplified together with the same primers. Collagen synthesis was found to decline after birth, so that the amount of pro alpha 1(I) collagen mRNA in the skin of 5- to 58-y-old donors was 17-37% of that in fetal skin. Slot-blot hybridization also indicated that the amount of pro alpha 1(I) collagen mRNA was much lower in adult skin than in fetal skin. In samples from lesional skin of two granuloma annulare patients, the number of pro alpha 1(I) mRNA molecules was increased 4- or 5-fold compared with values from nonlesional skin of the same patients. The method presented is a highly sensitive polymerase chain reaction application, requiring only very small amounts of total RNA.
- Published
- 1996
- Full Text
- View/download PDF
36. Increased collagen propeptides in the skin of a scleredema patient but no change in re-epithelialisation rate.
- Author
-
Haapasaari KM, Kallioinen M, Tasanen K, Risteli J, Palatsi R, and Oikarinen A
- Subjects
- Abdomen, Anti-Inflammatory Agents administration & dosage, Anti-Inflammatory Agents therapeutic use, Case-Control Studies, Collagen biosynthesis, Collagen drug effects, Connective Tissue chemistry, Connective Tissue diagnostic imaging, Connective Tissue pathology, Disease Progression, Epithelium chemistry, Epithelium diagnostic imaging, Epithelium pathology, Fibrosis, Follow-Up Studies, Glucocorticoids administration & dosage, Glucocorticoids therapeutic use, Glycosaminoglycans analysis, Humans, Male, Middle Aged, Peptide Fragments analysis, Peptide Fragments drug effects, Prednisolone administration & dosage, Prednisolone therapeutic use, Procollagen analysis, Procollagen drug effects, Protein Precursors biosynthesis, Protein Precursors drug effects, Scleredema Adultorum diagnostic imaging, Scleredema Adultorum pathology, Skin diagnostic imaging, Skin pathology, Time Factors, Ultrasonography, Up-Regulation drug effects, Collagen analysis, Protein Precursors analysis, Scleredema Adultorum metabolism, Skin chemistry
- Abstract
Scleredema is a rare disease, affecting the skin connective tissue with increased amounts of collagen and glycosaminoglycans. In the present study, the collagen synthesis and re-epithelialisation rate were measured from a 64-year-old male patient, who rapidly developed extensive tightening of the skin, without any underlying disease. The skin was thickened at several sites when measured with ultrasound, and the histology revealed accumulation of glycosaminoglycans and collagen bundles. The collagen synthesis rate was measured from suction blisters induced on two different sites of the skin before the treatment and three times later up to 6 months after the treatment with a systemic steroid was started. The aminoterminal propeptide of type I collagen (PINP) was increased manifold in the affected skin when compared with the controls, indicating active collagen deposition in vivo. Systemic steroid medication with high doses (over 20 mg/d) decreased both the type I and the type III collagen propeptide levels. The time schedule of the decreases in the propeptides in the thickened, affected skin and in the clinically normal-looking skin varied, and especially in the thickened skin in the abdomen the decrease in PINP was noted only after 3 months of prednisolone therapy. When the prednisolone dose was only 10 mg daily, the propeptides were again up-regulated, perhaps reflecting the natural course of the disease. The re-epithelialisation rates at two different sites of the patient were similar to those in the controls, suggesting that even massive fibrosis with active deposition of collagen does not alter the basal rate of re-epithelialisation in the skin. In conclusion, collagen synthesis is markedly elevated in scleredema, leading to fibrosis of the skin. A recently developed method utilizing assays of collagen propeptides from suction blister fluid allows monitoring of the collagen synthesis and detection of changes in the collagen synthesis during the treatment of fibrotic disorders.
- Published
- 1996
- Full Text
- View/download PDF
37. Systemic oral isotretinoin therapy and flow rate, pH, and matrix metalloproteinase-9 activity of stimulated saliva.
- Author
-
Oikarinen K, Salo T, Kylmäniemi M, Palatsi R, Karhunen T, and Oikarinen A
- Subjects
- Acne Vulgaris drug therapy, Administration, Oral, Adolescent, Adult, Collagenases metabolism, Female, Follow-Up Studies, Humans, Hydrogen-Ion Concentration, Isotretinoin administration & dosage, Keratolytic Agents administration & dosage, Male, Matrix Metalloproteinase 9, Middle Aged, Mouth Mucosa drug effects, Saliva enzymology, Saliva metabolism, Saliva physiology, Salivary Proteins and Peptides drug effects, Salivary Proteins and Peptides metabolism, Secretory Rate drug effects, Xerostomia chemically induced, Collagenases drug effects, Isotretinoin therapeutic use, Keratolytic Agents therapeutic use, Saliva drug effects
- Abstract
Systemic retinoids are known to cause dryness of the mouth and changes in oral and lip mucosa. The purpose of this study was to evaluate changes in salivary variables during treatment with oral isotretinoin in patients receiving the drug for 3 months for cutaneous acne. Patients were examined 1 month after initiation of medication and approximately 3.7 months after its discontinuation. Salivary flow and pH could be measured in 8 and the relative amount of matrix metalloproteinase-9 (MMP-9) of stimulated saliva in 17 patients. The mean flow rate of stimulated saliva was lower during medication than at control examination (P = 0.0277), but no change in the mean pH value was observed during medication. The mean activity of MMP-9 during medication was higher than at control examination (P = 0.0442). The enzyme activity increased in 13 of 17 and decreased in 4 of 17 cases.
- Published
- 1995
- Full Text
- View/download PDF
38. Synthesis and degradation of connective tissue macromolecules in pachydermoperiostosis (PDP): evidence for altered processing of plasminogen activator inhibitor-1 (PAI-1).
- Author
-
Oikarinen A, Kylmäniemi M, Palatsi R, and Keski-Oja J
- Subjects
- Adult, Autoradiography, Cells, Cultured, Collagen drug effects, Collagen genetics, Extracellular Matrix Proteins drug effects, Fibroblasts drug effects, Fibroblasts pathology, Gene Expression, Humans, Male, Osteoarthropathy, Primary Hypertrophic genetics, Osteoarthropathy, Primary Hypertrophic pathology, Peptides drug effects, Peptides genetics, RNA, Messenger analysis, RNA, Messenger genetics, Collagen metabolism, Extracellular Matrix Proteins metabolism, Fibroblasts metabolism, Osteoarthropathy, Primary Hypertrophic metabolism, Peptides metabolism, Plasminogen Activator Inhibitor 1 metabolism, Transforming Growth Factor beta pharmacology
- Abstract
Pachydermoperiostosis (PDP) is a hereditary disease with hyperostosis, clubbing of fingers, coarse skin and thickening of bones. Previous studies have disclosed some abnormality in the connective tissue in these patients. The purpose of the present study was to investigate connective tissue pathology in one family with PDP using fibroblast cultures. Fibroblastic cells were established from both the affected and healthy looking skin of 2 patients with PDP, and the expression of types I and III collagen, 92 kDa and 72 kDa gelatinases, metalloproteinase inhibitor (TIMP-1), human retinoic acid receptor and transforming growth factor beta (TGF beta) was analyzed. The modulation of glycoprotein synthesis, and of plasminogen activators and their inhibitors by TGF beta in vitro were also studied. The results indicated that collagen genes and gelatinases were similarly expressed in PDP and control cells, as well as the human retinoic acid receptor. TGF beta stimulated, both in PDP cells and normal cells, the synthesis of fibronectin, procollagen and plasminogen activator inhibitor-l (PAI-1), but qualitative differences could not be found. Proteolytically processed forms of PAI-1 were detected in PDP cell lines.
- Published
- 1995
- Full Text
- View/download PDF
39. Pachydermoperiostosis: analysis of the connective tissue abnormality in one family.
- Author
-
Oikarinen A, Palatsi R, Kylmäniemi M, Keski-Oja J, Risteli J, and Kallioinen M
- Subjects
- Acid Phosphatase blood, Adult, Collagen analysis, Collagen genetics, Collagen metabolism, Connective Tissue abnormalities, Connective Tissue metabolism, Connective Tissue pathology, Fibronectins analysis, Glycosaminoglycans analysis, Humans, Male, Microscopy, Electron, Middle Aged, Osteoarthropathy, Primary Hypertrophic metabolism, Osteoarthropathy, Primary Hypertrophic pathology, Osteocalcin analysis, Procollagen analysis, RNA, Messenger genetics, Skin chemistry, Skin pathology, Transforming Growth Factor beta analysis, Osteoarthropathy, Primary Hypertrophic genetics
- Abstract
Background: Pachydermoperiostosis (PDP) is a rare hereditary disease characterized by hyperostosis, clubbing of fingers, coarse skin, and abnormalities in other organs, such as the gastrointestinal tract. Previous studies have disclosed several abnormalities in the connective tissue in these patients., Objective: The purpose of the study was to investigate connective tissue abnormalities in one family with PDP., Methods: Clinical features were evaluated; x-ray, immunohistochemical, and electronmicroscopic studies were performed; and markers of collagen metabolism and lysosomal enzymes were determined., Results: Immunohistochemical and ultrastructural studies revealed accumulation of tenascin, glycosaminoglycans, and fibrillar material in apparently disorganized microfibrils of elastic fibers. Osteocalcin levels in the serum were increased, but synthesis and degradation markers of collagen in the serum were not altered. No evidence of a lysosomal enzyme deficiency was found., Conclusion: Acidic mucopolysaccharides and some fibrillar material accumulate in the dermis of patients with PDP. Increased levels of osteocalcin in serum indicate higher osteoblastic activity. Markers of synthesis and degradation of collagen were not altered.
- Published
- 1994
- Full Text
- View/download PDF
40. Effects of systemic isotretinoin on serum markers of collagen synthesis and degradation.
- Author
-
Autio P, Risteli J, Palatsi R, Väänänen K, Vuori J, Risteli L, and Oikarinen A
- Subjects
- Acne Vulgaris blood, Adolescent, Adult, Biomarkers blood, Collagen blood, Collagen metabolism, Cross-Sectional Studies, Cytarabine blood, Cytarabine metabolism, Daunorubicin blood, Daunorubicin metabolism, Female, Follow-Up Studies, Humans, Male, Osteocalcin blood, Osteocalcin metabolism, Peptide Fragments blood, Peptide Fragments metabolism, Prednisolone blood, Prednisolone metabolism, Procollagen blood, Procollagen metabolism, Thioguanine blood, Thioguanine metabolism, Acne Vulgaris drug therapy, Antineoplastic Combined Chemotherapy Protocols, Collagen drug effects, Isotretinoin pharmacology, Isotretinoin therapeutic use, Osteocalcin drug effects, Peptide Fragments drug effects, Procollagen drug effects, Tetracycline pharmacology, Tetracycline therapeutic use
- Abstract
In the present investigation, collagen synthesis and degradation were studied by measuring the carboxyterminal propeptide of type I procollagen (PICP), the aminoterminal propeptide of type III procollagen (PIIINP) and a type I collagen-specific degradation peptide (ICTP) in the sera of 43 male patients, treated for acne with isotretinoin or with tetracycline. The values were compared with those observed in 24 acne patients without treatment and in healthy controls. The treatment with isotretinoin did not seem to affect these parameters in a cross-sectional setting, whereas tetracycline treatment was associated with slightly decreased levels of ICTP. Since there were marked variations in the PICP, PIIINP and ICTP levels between individual subjects, a follow-up study, including male and female patients, others than in the first part of the study, was conducted. Two other biochemical markers of bone metabolism, osteocalcin, reflecting osteoblastic activity, and tartrate-resistant acid phosphatase (TRAP), reflecting osteoclastic activity, were also analyzed. In females, all these parameters were lower than in males. In addition, the changes in females were more pronounced; in particular, PIIINP and TRAP were significantly increased in females during retinoid treatment (p < 0.05 and p < 0.01, respectively). Importantly, no increase was found in the synthesis of type I collagen during retinoid treatment, suggesting that the commonly used retinoid dosages do not stimulate the synthesis of type I collagen in vivo.
- Published
- 1993
- Full Text
- View/download PDF
41. [The first Orf virus epidemic diagnosed in man and reindeer in 1992-1993 in Finland].
- Author
-
Palatsi R, Oksanen A, Sormunen R, Kallioinen M, and Karvonen J
- Subjects
- Adult, Animals, Ecthyma, Contagious virology, Female, Finland epidemiology, Humans, Male, Middle Aged, Orf virus ultrastructure, Zoonoses microbiology, Disease Outbreaks veterinary, Ecthyma, Contagious epidemiology, Reindeer, Zoonoses epidemiology
- Published
- 1993
42. Comparison of muscle-derived serum carbonic anhydrase III and myoglobin in dermatological patients: effects of isotretinoin treatment.
- Author
-
Oikarinen A, Vuori J, Autio P, Annala AP, Palatsi R, Kiistala U, and Väänänen K
- Subjects
- Adolescent, Adult, Female, Follow-Up Studies, Humans, Male, Muscles enzymology, Carbonic Anhydrases blood, Isotretinoin therapeutic use, Muscles metabolism, Myoglobin blood, Skin Diseases blood, Skin Diseases drug therapy
- Abstract
The serum levels of muscle-specific serum carbonic anhydrase III (S-CAIII) and myoglobin (S-Myo) were analyzed in various male dermatological patients of the same age. The mean levels of S-CAIII and S-Myo were essentially similar in patients with acne, psoriasis vulgaris, atopic eczema and tinea, suggesting that common dermatological diseases do not affect the serum levels of the muscle markers. Increased levels of S-CAIII, which is specific for skeletal muscle cells, were found in the acne patients who had been treated with isotretinoin. However, when S-CAIII and S-Myo were studied in 24 patients (16 males, 8 females) before and during isotretinoin treatment, no constant increases in these markers could be observed. When individual patients were followed for several months, transient increases or decreases could be observed. The changes in S-CAIII, or S-Myo, did not correlate with the dose of isotretinoin, nor with the duration of the treatment. The results suggest that systemic isotretinoin does not specifically affect skeletal or myocardial muscles. The increases in these markers observed in the course of dermatological diseases and isotretinoin treatment are obviously due to other factors, such as exercise.
- Published
- 1992
- Full Text
- View/download PDF
43. A case of the Klippel-Trenaunay-Parkes Weber syndrome.
- Author
-
Palatsi R
- Subjects
- Humans, Hypertrophy, Male, Middle Aged, Musculoskeletal System, Syndrome, Angiomatosis diagnosis, Klippel-Trenaunay-Weber Syndrome diagnosis
- Abstract
An extreme case of Klippel-Trenaunay-Parkes Weber syndrome is presented. The patient had extensive cutaneous naevus involving the left side of the body and consisting of naevus flammeus, hemangioma cavernosum, and naevus verrucosus. The left extremities were longer and there were multiple arteriovenous connections between a and v subclavia and a and v radialis. Secondary symptoms were sciatica, varicosity and osteoporosis.
- Published
- 1975
44. Anetoderma: biochemical and ultrastructural demonstration of an elastin defect in the skin of three patients.
- Author
-
Oikarinen AI, Palatsi R, Adomian GE, Oikarinen H, Clark JG, and Uitto J
- Subjects
- Adult, Atrophy, DNA analysis, Desmosine analysis, Female, Humans, Hydroxyproline analysis, Male, Microscopy, Electron, Skin analysis, Skin ultrastructure, Elastic Tissue pathology, Elastin analysis, Skin pathology
- Abstract
Three patients with localized cutaneous lesions characteristic of anetoderma were studied. Clinically, the onset of the disease was between the ages of 17 and 25, and numerous flaccid, saclike skin lesions developed over several subsequent years. Histologically, the lesions were characterized by paucity and fragmentation of the elastic fibers. Electron microscopy demonstrated that the elastic fibers, both in papillary and deep reticular dermis in the lesional skin, were fragmented and irregular in appearance. The concentration of elastin, determined by a radioimmunoassay of desmosine, an elastin-specific cross-link compound, was markedly reduced in the lesions, as compared with unaffected skin from the same patients or with normal skin from unrelated control subjects. In contrast, the concentrations of hydroxyproline, an index of collagen, or deoxyribonucleic acid (DNA), a measure of cellularity, were not changed in the lesions. Thus, the results indicate that in the three patients studied, the elastic fibers are defective and reduced in quantity. These observations suggest that the deficiency of elastin in the dermis may lead to development of the cutaneous lesions of anetoderma.
- Published
- 1984
- Full Text
- View/download PDF
45. Scleredema and paraproteinemia. Enhanced collagen production and elevated type I procollagen messenger RNA level in fibroblasts grown from cultures from the fibrotic skin of a patient.
- Author
-
Oikarinen A, Ala-Kokko L, Palatsi R, Peltonen L, and Uitto J
- Subjects
- Aged, Cells, Cultured, Female, Fibroblasts metabolism, Fibrosis, Humans, Paraproteinemias complications, Paraproteinemias metabolism, RNA, Messenger metabolism, Scleredema Adultorum complications, Skin metabolism, Collagen biosynthesis, Procollagen biosynthesis, Scleredema Adultorum metabolism
- Abstract
An edematous rash developed on the abdominal skin of a 76-year-old woman who had had diabetes mellitus for ten years. Some months later, the affected skin became thickened and indurated. Histopathologic examination revealed marked dermal fibrosis with excessive deposition of collagen. The patient also had IgA (k-type) paraproteinemia. Fibroblast cultures from the affected and unaffected skin were studied for collagen metabolism. Procollagen synthesis was elevated about sixfold on fibroblasts derived from the affected skin. A similar increase was detected in messenger RNA (mRNA) levels using a complementary DNA clone specific for human pro alpha 1(l) collagen mRNA. The elevated mRNA level could be the result of increased transcriptional activity of collagen genes or decreased degradation of collagen mRNAs. Our findings suggest that increased collagen deposition may account for the marked dermal fibrosis that we observed in this patient.
- Published
- 1987
- Full Text
- View/download PDF
46. Erythema dyschromicum perstans. A follow-up study from northern Finand.
- Author
-
Palatsi R
- Subjects
- Child, Finland, Follow-Up Studies, Humans, Melanins, Erythema pathology, Pigmentation Disorders pathology
- Abstract
Four patients with ashy dermatosis are described. Their ages varied from 8 to 12 years. Three had typical widespread macular eruptions and one had a linear lesion not described before. The follow-up investigation revealed that the eruption disappeared within 2 years in three of the patients. One patient could not be followed. The duration of the disease and the linearity of one lesion resembled lichen ruber planus.
- Published
- 1977
47. Paraproteinemia in patients with scleredema. Clinical findings and serum effects on skin fibroblasts in vitro.
- Author
-
Ohta A, Uitto J, Oikarinen AI, Palatsi R, Mitrane M, Bancila EA, Seibold JR, and Kim HC
- Subjects
- Aged, Cells, Cultured, Collagen biosynthesis, Female, Fibroblasts, Humans, Male, Middle Aged, Paraproteinemias immunology, Paraproteins immunology, Scleredema Adultorum immunology, Paraproteinemias complications, Scleredema Adultorum complications, Skin pathology
- Abstract
Four patients with paraproteinemia and scleredema were studied. Histologic features included marked thickening and fibrosis of the dermis and subcutis. Variable amounts of mucin deposits were detected in the interfibrillar spaces. Serum from one patient significantly stimulated collagen production in normal skin fibroblast cultures, whereas serum from another patient stimulated collagen production in autologous cell cultures. Moreover, serum from one patient stimulated the [35S]sulfate incorporation into the fibroblasts. Circulating serum factors, possibly related to the paraprotein, may enhance the synthesis of extracellular macromolecules by dermal fibroblasts in these patients, thus providing a mechanism for dermal fibrosis.
- Published
- 1987
48. Hormonal analysis and delayed hypersensitivity reactions in identical twins with severe acne.
- Author
-
Palatsi R and Oikarinen A
- Subjects
- Acne Vulgaris immunology, Acne Vulgaris pathology, Adolescent, Adult, Dinitrochlorobenzene, Female, Humans, Male, Pregnancy, Skin metabolism, Skin pathology, Tuberculin Test, Twins, Monozygotic, Acne Vulgaris genetics, Diseases in Twins, Hypersensitivity, Delayed, Receptors, Androgen genetics, Receptors, Androgen metabolism, Receptors, Steroid genetics, Testosterone blood
- Abstract
Identical twins aged 17 and another pair aged 21 are described. One pair had febrile ulcerative conglobate acne; the other, cystic acne. The location of acne, the type of the lesions and the course of the disease were very similar in the two twins of each pair. The testosterone levels of the 17-year-old pair varied and their acne was in the active stage, while the 21-year-old pair had high testosterone levels and their acne was abating. The 17-year-old pair had negative Mantoux reactions and they reacted negatively to DNCB sensitization. The authors suggest that acne skin may have a certain genetically determined local factor, e.g. hormone receptor, which gives rise to acne in a certain hormonal situation.
- Published
- 1979
49. Treatment of acne with cyproterone acetate and ethinyl estradiol.
- Author
-
Palatsi R, Ylöstalo P, and Taipale A
- Subjects
- 17-Hydroxycorticosteroids blood, 17-Ketosteroids blood, Adolescent, Adult, Alanine Transaminase blood, Aspartate Aminotransferases blood, Cyproterone adverse effects, Drug Combinations, Drug Evaluation, Ethinyl Estradiol adverse effects, Female, Humans, Tablets, Testosterone blood, Acne Vulgaris drug therapy, Cyproterone therapeutic use, Ethinyl Estradiol therapeutic use
- Abstract
Tablets containing 2 mg cyproterone acetate and 0.05 mg ethinyl estradiol in a calendar package of 21 days were used as an oral contraceptive to treat acne. The series comprised 20 patients. The women were 18--43 years of age, and all had acne which had previously been resistant to therapy. The treatment was continued for 6 months. Serum testosterone, 17-OHCS, 17-KS, serum ALAT and gamma-GT were recorded prior to the treatment at 3 and 6 months. Ten patients responded well to the treatment, 5 responded moderately well, 3 experienced no change, and 2 became worse. The serum testosterone level fell during the therapy and the ALAT level rose, though only one pathological ALAT value was recorded.
- Published
- 1978
50. A skin reaction to pindololum, a beta-blocking drug.
- Author
-
Palatsi R
- Subjects
- Humans, Male, Middle Aged, Pindolol therapeutic use, Skin pathology, Drug Eruptions pathology, Pindolol adverse effects
- Abstract
The case is described of a man aged 61, who developed a psoriasiform skin reaction to pindololum after taking 5 mg b.i.d. for seven days. The dermatitis reappeared after resumption of the drug on two occasions. The histology showed a lichenoid eruption.
- Published
- 1976
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.