FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2020129097> ?p ?o ?g. }

• W2020129097 endingPage "708" @default.
• W2020129097 startingPage "708" @default.
• W2020129097 abstract "To the Editor: We read with interest the article byYosipovitch et al., 1998Yosipovitch G. Xiong G.L. Haus E. Sackett-Lundeen L. Ashkenazi I. Maibach H.I. Time dependent variations of the skin barrier function in humans: transepidermal water loss, stratum corneum hydration, skin surface pH, and skin temperature.J Invest Dermatol. 1998; 110: 20-23Abstract Full Text Full Text PDF PubMed Scopus (231) Google Scholar about time-dependent variations of skin barrier function in humans. Because we believe that the subject of chronobiologic changes in skin properties are of great interest for dermatologic and cosmetic research, we think that several methodologic inconsistencies of this report need to be pointed out. 1 The study was restricted to a 24 h span resulting from two sessions of 12 h, 1 wk apart. In fact, time-related changes in the 24 h scale were reconstructed rather than actually investigated. This way of data collection is unusual – at least when studying circadian rhythms. As has been suggested previously (Reinberg et al., 1983Reinberg A. Smolensky M.H. Investigative methodology for chronobiology.in: Reinberg A. Smolensky M.H. Biological Rhythms and Medicine. Springer-Verlag, New York1983: 23-46Google Scholar), a supposed 24 h rhythmicity is best studied over a continuous time span of at least 48 h, in order to validate the events over two consecutive periods. The authors’ rational for their choice has not been explained. 2 In studying rhythmicity of biologic events, “marker rhythms” are of critical interest to show objectively that subjects are synchronized (Haus et al., 1990Haus E. Touitou Y. Chronobiology in laboratory medecine.in: Touitou Y. Haus E. Biologic Rhthyms in Clinical and Laboratory Medecine. Springer-Verlag, Berlin1990: 673-708Google Scholar). Therefore reference variables such as cortisol and/or melatonin should be routinely obtained during chronobiologic studies (Frentz et al., 1991Frentz G. Moller U. Hölmich P. Christensen I.J. On circadian rhythms in human epidermal cell proliferation.Acta Derm Venereol. 1991; 71: 85-87PubMed Google Scholar;Verschoore et al., 1993Verschoore M. Poncet M. Krebs B. Ortonne J.P. Ciracadian variations in the number of actively secreting sebaceous follicles and androgen circadian rhythms.Chronobiol Internat. 1993; 10: 349-359Crossref PubMed Scopus (34) Google Scholar). Parameters of such marker rhythms and also of transepidermal water loss and skin blood flow are altered by oral contraceptives (Reinberg et al., 1996Reinberg A. Touitou Y. Soudant E. Bernard D. Bazin R. Mechkouri M. Oral contraceptives alter circadian rhythms parameters of cortisol, melatonin, blood pressure, heart rate, skin blood flow, transepidermal water loss, and skin aminoacids of healthy young women.Chronobiol Internat. 1996; 13: 199-211Crossref PubMed Scopus (58) Google Scholar). The intake of these drugs should therefore always be assessed in chronobiologic studies. 3 The authors state that they “found a statistically significant circadian rhythmicity characterized by cosinor analyses in transepidermal water loss, skin surface pH, and skin temperature in the forearm, forehead and shin.” The cosinor method (Nelson et al., 1979Nelson W. Tong Y. Lee J.K. Halberg F. Methods for cosinor rhythmometry.Chronobiologia. 1979; 6: 305-323PubMed Google Scholar) has been used as the major statistical tool. Using the least square method, one tries to find the best fitting cosine function approximating all data. It is assumed that rhythmic changes are close to a cosine function with a period of 24 h. When this occurs, the mean peak time location of a rhythm (the acrophase φ) is given with rather narrow and symmetrical confidence limits, e.g., φ ± 60 min with a 95% security. If the experimental curve is far from a cosine function, as well as if data are associated with an important noise, or both, confidence limits of φ are spread asymmetrically over many hours. This is true even if the rhythm appears to be detected by rejection of the null hypothesis for amplitude. This means that the cosinor must be used with caution especially when the sample size is small. From both a practical and a statistical point of view,De Prins and Waldura, 1993De Prins J. Waldura J. Sightseeing around the single cosinor.Chronobiol Internat. 1993; 10: 395-400Crossref PubMed Scopus (45) Google Scholar have recommended not to use this method when confidence limits of φ are larger than ± 2 h associated with an asymmetrical distribution. In the paper by Yosipovitch et al., 1998Yosipovitch G. Xiong G.L. Haus E. Sackett-Lundeen L. Ashkenazi I. Maibach H.I. Time dependent variations of the skin barrier function in humans: transepidermal water loss, stratum corneum hydration, skin surface pH, and skin temperature.J Invest Dermatol. 1998; 110: 20-23Abstract Full Text Full Text PDF PubMed Scopus (231) Google Scholar, Table II), it appears, for example, that transepidermal water loss peak time may be located between 10.30 and 19.30 h (with φ = 18.00 h +1 h 30 min/–7 h 30 min) or that the shin pH peak time may be located between 05.30 and 14.30 h (with φ = 11.00 h +3 h 30 min/–5 h 30 min). This dramatic lack of precision clearly means that the cosinor cannot be used in these cases, presumably because none of the documented rhythms are close to a cosine function. According to De Prins, the fact that 95% confidence limits are asymmetrical, with respect to the mean acrophase (φ), also leads one to conclude that the results are of very doubtful value. Moreover we were surprised to find a set of nice looking cosine curves instead of figures displaying raw data. In this case cosine curves are just misleading the reader not familiar with circadian rhythms studies, without adding to the knowledge of chronobiologic changes of the skin. We believe that such a presentation of data inhibit rather than help progress in the research of circadian rhythms." @default.
• W2020129097 created "2016-06-24" @default.
• W2020129097 creator A5019403462 @default.
• W2020129097 creator A5035658428 @default.
• W2020129097 creator A5058269631 @default.
• W2020129097 date "1998-10-01" @default.
• W2020129097 modified "2023-10-16" @default.
• W2020129097 title "Problems Related to Circadian Rhythms in Human Skin and their Validation" @default.
• W2020129097 cites W1964811393 @default.
• W2020129097 cites W1969687658 @default.
• W2020129097 cites W2056943086 @default.
• W2020129097 cites W2060931808 @default.
• W2020129097 doi "https://doi.org/10.1046/j.1523-1747.1998.00336.x" @default.
• W2020129097 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/9764860" @default.
• W2020129097 hasPublicationYear "1998" @default.
• W2020129097 type Work @default.
• W2020129097 sameAs 2020129097 @default.
• W2020129097 citedByCount "15" @default.
• W2020129097 countsByYear W20201290972013 @default.
• W2020129097 countsByYear W20201290972015 @default.
• W2020129097 countsByYear W20201290972016 @default.
• W2020129097 countsByYear W20201290972020 @default.
• W2020129097 countsByYear W20201290972021 @default.
• W2020129097 crossrefType "journal-article" @default.
• W2020129097 hasAuthorship W2020129097A5019403462 @default.
• W2020129097 hasAuthorship W2020129097A5035658428 @default.
• W2020129097 hasAuthorship W2020129097A5058269631 @default.
• W2020129097 hasBestOaLocation W20201290971 @default.
• W2020129097 hasConcept C121446783 @default.
• W2020129097 hasConcept C126322002 @default.
• W2020129097 hasConcept C135343436 @default.
• W2020129097 hasConcept C142724271 @default.
• W2020129097 hasConcept C16005928 @default.
• W2020129097 hasConcept C169760540 @default.
• W2020129097 hasConcept C187765855 @default.
• W2020129097 hasConcept C2778370115 @default.
• W2020129097 hasConcept C42407357 @default.
• W2020129097 hasConcept C71924100 @default.
• W2020129097 hasConcept C86803240 @default.
• W2020129097 hasConcept C95150158 @default.
• W2020129097 hasConceptScore W2020129097C121446783 @default.
• W2020129097 hasConceptScore W2020129097C126322002 @default.
• W2020129097 hasConceptScore W2020129097C135343436 @default.
• W2020129097 hasConceptScore W2020129097C142724271 @default.
• W2020129097 hasConceptScore W2020129097C16005928 @default.
• W2020129097 hasConceptScore W2020129097C169760540 @default.
• W2020129097 hasConceptScore W2020129097C187765855 @default.
• W2020129097 hasConceptScore W2020129097C2778370115 @default.
• W2020129097 hasConceptScore W2020129097C42407357 @default.
• W2020129097 hasConceptScore W2020129097C71924100 @default.
• W2020129097 hasConceptScore W2020129097C86803240 @default.
• W2020129097 hasConceptScore W2020129097C95150158 @default.
• W2020129097 hasIssue "4" @default.
• W2020129097 hasLocation W20201290971 @default.
• W2020129097 hasLocation W20201290972 @default.
• W2020129097 hasOpenAccess W2020129097 @default.
• W2020129097 hasPrimaryLocation W20201290971 @default.
• W2020129097 hasRelatedWork W187845116 @default.
• W2020129097 hasRelatedWork W1969687658 @default.
• W2020129097 hasRelatedWork W1974160443 @default.
• W2020129097 hasRelatedWork W1994252498 @default.
• W2020129097 hasRelatedWork W2004804813 @default.
• W2020129097 hasRelatedWork W2015490928 @default.
• W2020129097 hasRelatedWork W2324639233 @default.
• W2020129097 hasRelatedWork W3013090455 @default.
• W2020129097 hasRelatedWork W4318947496 @default.
• W2020129097 hasRelatedWork W4322744585 @default.
• W2020129097 hasVolume "111" @default.
• W2020129097 isParatext "false" @default.
• W2020129097 isRetracted "false" @default.
• W2020129097 magId "2020129097" @default.
• W2020129097 workType "article" @default.