Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1988-5-6
pubmed:abstractText
A double blind cross-over phototoxicity study using demethylchlortetracycline (DMCT) 0.3 g x 2, doxycycline 0.1 g x 2, lymecycline 0.6 g x 2 and placebo was performed on 8 healthy human volunteers. Drugs were given for 3 consecutive days, and on the third day the volunteers were tested with different modalities of artificial long-wave ultraviolet radiation (UVA) and assessed 24 h later for objective as well as subjective abnormal photoreactions. All 4 substances were tested in each individual at weekly intervals and serum concentrations of tetracycline were determined. It was found most convenient to irradiate relatively large skin areas using fluorescent tubes emitting mainly UVA but also a small proportion of UVB. Using this type of irradiation, weak erythemal reactions were obtained with all 3 derivatives. Taking only stronger reactions and stinging sensations into account, 0/8 reacted to lymecycline, 0/8 to DMCT and 4/8 to doxycycline. There was no significant difference in serum concentration among the 3 derivatives. It is concluded that doxycycline is the most potent photosensitizer at the dosage tested.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0108-9684
pubmed:author
pubmed:issnType
Print
pubmed:volume
4
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
281-7
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Double blind cross-over studies on phototoxicity to three tetracycline derivatives in human volunteers.
pubmed:affiliation
Department of Dermatology, General Hospital, Lund University, Malmö, Sweden.
pubmed:publicationType
Journal Article, Clinical Trial, Controlled Clinical Trial