1.
Gruvberger, Birgitta, et al.
(författare)
Methyldibromoglutaronitrile
2003
Ingår i: Management of positive patch test reactions. - 3540443479 ; , s. 41-41
Bokkapitel (övrigt vetenskapligt/konstnärligt)
2.
Frick, Inga-Maria, et al.
(författare)
Interactions between M proteins of Streptococcus pyogenes and glycosaminoglycans promote bacterial adhesion to host cells.
2003
Ingår i: European Journal of Biochemistry. - : Wiley. - 0014-2956. ; 270:10, s. 2303-2311
Tidskriftsartikel (refereegranskat) abstract
Several microbial pathogens have been reported to interact with glycosaminoglycans (GAGs) on cell surfaces and in the extracellular matrix. Here we demonstrate that M protein, a major surface-expressed virulence factor of the human bacterial pathogen, Streptococcus pyogenes, mediates binding to various forms of GAGs. Hence, S. pyogenes strains expressing a large number of different types of M proteins bound to dermatan sulfate (DS), highly sulfated fractions of heparan sulfate (HS) and heparin, whereas strains deficient in M protein surface expression failed to interact with these GAGs. Soluble M protein bound DS directly and could also inhibit the interaction between DS and S. pyogenes. Experiments with M protein fragments and with streptococci expressing deletion constructs of M protein, showed that determinants located in the NH2-terminal part as well as in the C-repeat region of the streptococcal proteins are required for full binding to GAGs. Treatment with ABC-chondroitinase and HS lyase that specifically remove DS and HS chains from cell surfaces, resulted in significantly reduced adhesion of S. pyogenes bacteria to human epithelial cells and skin fibroblasts. Together with the finding that exogenous DS and HS could inhibit streptococcal adhesion, these data suggest that GAGs function as receptors in M protein-mediated adhesion of S. pyogenes.
3.
Jensen, LK, et al.
(författare)
Optical coherence tomography in clinical examination of non-pigmented skin malignancies
2003
Ingår i: OPTICAL COHERENCE TOMOGRAPHY AND COHERENCE TECHNIQUES. - : SPIE. - 0277-786X .- 1996-756X. - 0819450103 ; 5140, s. 160-160
Konferensbidrag (refereegranskat) abstract
Optical coherence tomography (OCT) images of basal cell carcinomas (BCCs) have been acquired using a compact handheld probe with an integrated video camera allowing the OCT images to be correlated to a skin surface image. In general the healthy tissue of the skin has an obvious stratified structure, whereas the cancerous tissue shows a more homogenous structure. Thus it was demonstrated that it is possible to distinguish BCCs from healthy tissue by means of OCT. Furthermore different histological types of BCC were identified. Comparison of OCT images taken prior to and immediately after photodynamic therapy clearly shows the tissue response to the treatment, and indicates local oedema in the treated area.
4.
Terstappen, Karin, 1967
(författare)
Pigmentierte basalzellkarzinome.
2003
Ingår i: Dermatoskopie von Hauttumoren.. - Darmstadt, Tyskland : Steinkopff Verlag.
Bokkapitel (övrigt vetenskapligt/konstnärligt)
5.
Ahlfors, Stefan, et al.
(författare)
Reactivity of contact allergenic haptens to amino acid residues in a model carrier peptide, and characterisation of formed peptide-hapten adducts
2003
Ingår i: Skin Pharmacology and Applied Skin Physiology. - : S. Karger AG. - 1422-2868. ; 16:1, s. 59-68
Tidskriftsartikel (refereegranskat) abstract
The type of chemical reaction between hapten and carrier protein in the formation of a complete antigen in vivo giving rise to an allergic contact dermatitis (ACD, type IV allergy) is essentially unknown. About 4,000 low-molecular organic compounds are known to have allergenic properties. ,-Unsaturated carbonyl structures are frequently present among these compounds. Haptens giving rise to antibody formation and type I allergy have been shown to add predominantly to lysine in the carrier protein. In this paper, the reactivity of activated type IV haptens to a model peptide is reported. Essentially all amino acids with nucleophilic properties were present in the model peptide. Investigation of the relative reactivities of the amino acid residues to activated haptens under biomimetic conditions is performed in order to determine the proportions between the adducts of the different amino acid moieties. In all cases, the electrophilic ,-unsaturated haptens were found to be added to the cysteine residue and no lysine adduct was recorded. Nuclear magnetic resonance (NMR) spectroscopy was used to exclude steric hindrance of any amino acid residue in the addition reaction. The hapten-modified peptides were isolated and characterized by NMR and mass spectrometry.
6.
Allhorn, Maria, et al.
(författare)
Heme-Scavenging Role of alpha1-Microglobulin in Chronic Ulcers.
2003
Ingår i: Journal of Investigative Dermatology. - : Elsevier BV. - 1523-1747 .- 0022-202X. ; 121:3, s. 640-646
Tidskriftsartikel (refereegranskat) abstract
Chronic venous ulcers are characterized by chronic inflammation. Heme and iron, originating from blood cell hemolysis as well as extravascular necrosis, have been implicated as important pathogenic factors due to their promotion of oxidative stress. It was recently reported that the plasma and tissue protein alpha1-microglobulin is involved in heme metabolism. The protein binds heme, and a carboxy-terminally processed form, truncated alpha1-microglobulin, also degrades heme. Here, we show the presence of micromolar levels of heme and free iron in chronic leg ulcer fluids. Micromolar amounts of alpha1-microglobulin was also present in the ulcer fluids and bound to added radiolabeled heme. Truncated alpha1-microglobulin was found in the ulcer fluids and exogenously added alpha1-microglobulin was processed into the truncated alpha1-microglobulin form. Histochemical analysis of chronic wound tissue showed the presence of iron deposits, heme/porphyrins in infiltrating cells basement membranes and fibrin cuffs around vessels, and alpha1-microglobulin ubiquitously distributed but especially abundant in basement membranes around vessels and at fibrin cuffs. Our results suggest that alpha1-microglobulin constitutes a previously unknown defense mechanism against high heme and iron levels during skin wound healing. Excessive heme and iron, which are not buffered by alpha1-microglobulin, may underlie the chronic inflammation in chronic ulcers.
7.
Aneblom, Gunilla
(författare)
The Emergency Contraceptive Pill – a Second Chance : Knowledge, Attitudes and Experiences Among Users and Providers
2003
Doktorsavhandling (övrigt vetenskapligt/konstnärligt) abstract
The overall aim of this thesis was to study knowledge, attitudes and experience of emergency contraceptive pills among women and providers. Both quantitative and qualitative methods were used. Focus-group interviews were conducted with teenage-girls (I) and with women who had purchased ECP without prescription (IV). Self-administered waiting-room questionnaires were administered to women presenting for induced abortion in three large hospitals (II, III), and after the deregulation of ECP, a postal questionnaire was sent to pharmacy staff and nurse-midwives in three counties in mid-Sweden (V). Overall, women showed high basic awareness of ECP although specific knowledge such as the level of effectiveness, time-frames and how the method works was lacking. Approval of the method was high and most women were positive to use the method if they needed. Contradictory views as to whether ECP undermines contraceptive behavior were expressed. As many as 43% of women requesting induced abortion had a history of one or more previous abortions. Among the abortion applicants, one out of five, 22%, had previously used ECP and 3% had used it to prevent the current pregnancy. Media and friends were the two most common sources of information on ECP. Half of the women, 52%, were positive to having ECP prescription-free. Those women who had purchased ECP in a pharmacy without prescription, appreciated this possibility, and the major benefits expressed were time saving aspects. No severe side-effects were reported. The women's experiences of interaction with pharmacy staff were both positive and negative. The importance of up-to-date information about ECP and the OTC-availability from the health care providers was emphasized. Both pharmacy staff and nurse-midwives had positive attitudes towards ECP and the OTC availability. Of pharmacy staff, 38% reported that they referred women to nurse-midwives/gynecologists for further counseling and follow-ups. The need for increased communication and collaboration between pharmacies and local family planning clinics was reported by both study groups with suggestions of regular meetings for information and discussions. The results suggest that ECP is still underused and that more factual information is needed before the method is becoming a known, accepted and integrated back-up method to the existing family planning repertoire. Longitudinal research to assess the long-term effects of ECP is needed.
8.
Arrelöv, Britt, 1953-
(författare)
Towards Understanding of Determinants of Physicians’ Sick-listing Practice and their Interrelations : A Population-based Epidemiological Study
2003
Doktorsavhandling (övrigt vetenskapligt/konstnärligt) abstract
Physicians are supposed to act as sick-listing experts and they possess a role as gate-keepers to the social insurance system. Earlier studies have demonstrated variation between physicians and physician categories regarding sick-listing practice. In addition to the patient's disease and its severity, a number of other factors may be expected to influence sick-listing practice. Most earlier studies have focused on the patient's disease and his or her work place as cause for sickness absence.The aims of this study were to analyse variation of sick-listing practice between physician categories and the influence of physician characteristics on sick-listing practice, the influence of structure, organisation and remuneration of health care on physician sick-listing practice, the influence of local structural factors in the community, and the influence of a legislative change on physician sick-listing practice.The study was conducted as a cross-sectional epidemiological study of 57563 doctors’ certificates for sickness absence, received by 28 local social insurance offices in eight Swedish counties, during four months in 1995 and two months in 1996.Patient age, sex, and diagnostic group, issuing physician category, presence of a hospital in the municipality, municipality population size and county were all significantly and independently correlated to number of net days of sick-listing. Physician characteristics, such as age, sex and degree of specialisation were all associated with number of net days of sick-listing. Physicians working in general practice issued significantly shorter periods of sick-listing than the other physician categories. Reimbursement of general practice and participation in financial co-operation with social insurance were significantly correlated to length of sickness episode issued by general practitioners. A legislative change performed during the study period was associated with small effects in sick-listing practice.In conclusion, a number of factors other than disease and disease severity and other patient and physician linked factors were found to influence the variation of sick-listing practice. It appears that the closer the influencing factor was to the place were the decision was taken, i.e., the patient-physician consultation, the higher the impact on the decision appeared to be.
9.
10.
Axelsson, Inge, et al.
(författare)
Impetigo
2003
Annan publikation (övrigt vetenskapligt/konstnärligt) abstract
Clinical practice guidelines for impetigo
