E-selectin, ICAM-1 (intercellular adhesion molecule-1), and VCAM-1 (vascular cell adhesion molecule-1) play a role in atopic dermatitis (AD). This study aimed to evaluate their expression in skin ...biopsy specimens of patients diagnosed with AD using an optimized computer program. A descriptive analysis and comparison of digitally measured surface area and cell number were performed. The number of E-selectin-positive cells did not vary between the groups. In patients with AD, decreases of 1.2-fold for ICAM-1- and 1.3-fold for VCAM-1- positive cells were observed. The E-selectin-positive epidermal surface area increased (
< 0.001), while ICAM1 and VCAM1 decreased 2.5-fold and 2-fold, respectively, compared to controls. In the AD-affected skin, the E-selectin-positive endothelial area was 3.5-fold larger (
< 0.001), and the ICAM1-positive area was almost 4-fold larger (
< 0.001). E-selectin and ICAM-1 were expressed in the control dermis moderately and weakly, respectively. A strong E-selectin signal was detected in the AD-affected skin macrophages and a strong ICAM-1 signal in the dermal vessel endothelium. In the endothelial cells of AD-affected skin, no VCAM-1 signal could be found. E-selectin, ICAM-1, and VCAM-1 expression show significant disease-specific changes between AD-affected and control skin. The combination of digital analysis and a pathologist's evaluation may present a valuable follow-up of AD activity parameters.
SAŽETAK
Atopijski dermatitis česta je, kronično recidivirajuća upalna bolest kože karakterizirana složenom etiopatogenezom i raznolikim kliničkim fenotipom. Klinička slika može biti različita, a ...bolest je obilježena ponavljajućim dermatitisom, izraženim svrbežom i značajnim utjecajem na kvalitetu života oboljele osobe i cijele obitelji. Dijagnoza se postavlja na temelju kliničke slike prema standardiziranim dijagnostičkim kriterijima, a procjena težine bolesti prema standardiziranim instrumentima za procjenu težine bolesti. Liječenje treba prilagoditi svakom bolesniku, a cilj liječenja je smanjiti simptome svrbeža, obnoviti oštećenu kožnu barijeru, spriječiti egzacerbaciju bolesti, spriječiti odnosno liječiti komplikacije i komorbiditete te smanjiti negativni utjecaj bolesti na kvalitetu života. Zahvaljujući napretku u razumijevanju etiopatogeneze, terapijske mogućnosti su zadnjih godina značajno napredovale. Hrvatsko dermatovenerološko društvo Hrvatskoga liječničkog zbora predstavlja smjernice za dijagnostiku i liječenje atopijskog dermatitisa. Smjernice su rezultat konsenzusa hrvatskih stručnjaka za atopijski dermatitis koji su kritički proučili mjerodavnu znanstvenu literaturu, koja se temelji na najboljim dokazima.
Tlačni vrijed ili dekubitus razvija se kao posljedica brojnih čimbenika pri kojima dominiraju pritisak, vlačne sile i ishemija uz nepokretnost i inkontinenciju. Ciljane i osmišljene preventivne mjere ...smanjuju učestalost i komplikacije tlačnog vrijeda od kojih je najznačajnija infekcija. Značajna preventivna mjera je zaštita okoline kože, a prije primjene potpornih obloga. Prema promjenama na koži potrebno je primijeniti određeni neutralni pripravak za njegu, a prema dermatološkom statusu kože lokalni ljekoviti pripravak.
Autoimmune progesterone dermatitis (APD) is rare autoimmune response to endogenous progesterone or to earlier exposure to exogenous progesterone (1). Skin lesions typically occur due to increases in ...progesterone during the luteal phase of the menstrual cycle (2). A-31-year-old mother of two children presented to our Department with a 5-year history of pruritic and painful erythematosus macules, papules, and patches on her neck, pectoral region, and face, which appeared 2-3 days before the onset of menses and gradually resolved 7-10 days later (Figure 1). The lesions first appeared 10 months after her second pregnancy and a few months after she had started using oral contraceptive pills (OCP) containing gestodene combined with ethinyloestradiol. A few months before presenting to us, the lesions had started spreading on her forearms, elbows, and pretibial areas. Since one year prior to our visit she had complained of occasional urticaria with angioedema one week prior to menses, which resolved after menses. The lesions were accompanied by malaise, headache, and fatigue. The patient was asymptomatic between the outbreaks. She reported that she had been using various local corticosteroids, peroral antihistamines, and prednisone for the treatment of her skin lesions, but this treatment had not improved her symptoms. She suffered from mild seasonal rhinoconjunctivitis. We performed multiple laboratory tests that were unremarkable. Histopathological examination of a biopsy taken from a lesion on the neck showed epidermal hyperplasia and nonspecific mild dermal inflammation. Since progesterone was not available in aqueous solution in our country, we did not perform an intradermal test, but we performed a lymphocyte transformation test (LTT) to medroxyprogesterone and estradiol. The patient's lymphocytes showed markedly enhanced proliferation to medroxyprogesterone in vitro, while being negative to estradiol. We had performed control LTT in 10 healthy controls and 10 patients with atopy, and such hyperactivity was not observed in any of them. We performed an oral provocation test with OCP containing gestodene combined with ethinyloestradiol. Two days after commencing treatment, the patient developed widespread dermatitis (Figure 2) with nausea, malaise, and angioedema. The patient was informed about treatment options and possible side-effects. She started with OCP with the lowest amount of progesterone, containing ethinyloestradiol and dropirenone for treatment of APD, but terminated treatment after the second cycle due to a worsening of the skin lesions and urticaria accompanied with angioedema. At the time of writing, our patient continues to have premenstrual flares. The typical symptoms of APD are skin lesions such as eczema, erythema multiforme, prurigo, stomatitis, papulopustular lesions, folliculitis, urticaria, angioedema, and rarely anaphylaxis (2) that develop 3-10 days before and subside 1-2 days after menses, with recurrent cyclic aggravation (1,3,4). Frequently, patients have a history of exogenous progesterone intake (1,5,6), as in our patient, which could have resulted in antibody formation. The diagnosis of APD is established by an appropriate clinical history (premenstrual flare of skin lesions), a progesterone intradermal test, an intramuscular (7), oral (8), or intravaginal (1, 6) progesterone challenge test, and circulating antibodies to progesterone. Progesterone testing has not been standardized. Most of the sex hormones are not suitable for testing since they contain an oily component that can produce an irritant test reaction. Gestodene, which was used for the oral provocation test in our patient, is a potent progesterone (9). The LTT shows reactions to circulating lymphocytes and reflects immune reactions within the body. The goal of treatment is suppression of ovulation. Currently, the first-line choice of therapy is a combination oral contraceptive (3). We believe that OCP have a limited effect because all of them contain a progesterone component. If this treatment is ineffective, patients have been treated with danazol, gonadotropin releasing hormone analogs (3,4,6), conjugated estrogens (7), tamoxifen, oophorectomy (8), and progestogen desensitization (10) with varying success.
Atopic dermatitis (AD) is a common chronic and relapsing, non-contagious inflammatory skin disorder, characterized by skin barrier impairment and baseline immune irregularities. The literature on the ...relationship between AD and cutaneous delayed-type hypersensitivity is inconclusive. There is an ongoing debate whether contact sensibility (CS) is found more or less often among patients with AD. Aim of the study was to evaluate the incidence of contact sensitivity (positive patch test reactions) in patients with and without AD. We patch tested a total of 2143 patients (563 men and 1580 women). There were 226 patients with history of AD; 61 (27%) men and 165 (73%) women. The patient group without AD consisted of 1917 patients, 502 (26%) male and 1415 (74%) female patients, who were referred to our Department with clinical suspicion of allergic contact dermatitis (ACD). A patch test was performed with the baseline series, and readings were performed on days D2, D3, and D7. Among patients with AD, 109 (48.2%) had a positive patch test reaction to at least one allergen, whereas 1094 (57.1%) patients with no history of AD had a positive patch test reaction. The most common positive allergens in patients with AD were nickel (II) sulfate (13.3%), thimerosal (12.4%), cobalt (II) chloride (11.5%), methylisothiazolinone (MI) (8.4%), fragrance mix I (6.6%), potassium dichromate (5.3%), methyldibromo glutaronitrile (4.0%), and carba mix (4.0%). The results of our study agree with previous findings that there is no significant difference in prevalence of CS between the atopic and nonatopic populations.
Metal allergies can be a clinical problem, especially in atopic individuals. This study is unique and contributes with new knowledge in everyday life skin care of irritant and atopic dermatitis ...patients. The aim of the study was to determine the frequency of positive patch test reactions to metal contact allergens (potassium dichromate, cobalt chloride, nickel sulfate, white mercury precipitate) in patients diagnosed with allergic contact dermatitis, irritant contact dermatitis, and atopic dermatitis. Between 2007 and 2011, patch testing was performed in 2185 patients according to the International Contact Dermatitis Research Group technique. Study results showed statistically significant differences in patch test responses to 2 allergens, nickel sulfate (χ(2)=24.22; p<0.001) and cobalt chloride (χ(2)=22.72; p<0.001). Nickel sulfate was the most common allergen in allergic contact dermatitis and atopic dermatitis, while for irritant contact dermatitis the most common allergen was cobalt chloride. Among the 4 tested metal allergens, the most common and relevant was nickel sulfate (χ(2)=17.25; p<0.004), found in almost all study subjects. In conclusion, the increased awareness of allergens and their potential sources may help limit the use of these chemicals in consumer product manufacturing.
Današnje spoznaje i dokazi o biofilmu, interakcije između različitih bakterijskih vrsta, te ukupna virulencija mikroba imaju utjecaj na odgođeno cijeljenje rane i razvoj infekcije. Kvalitetan opis ...kliničkih simptoma uz suvremena saznanja o mikrobima rane odličan su vodič za kreiranje strategije liječenja kroničnog vrijeda. Zbog sve boljeg razumijevanja uloge biofilma u produljenju vremena liječenja i znanja o sustavu i strukturi biofi lma istraživači su razvili Ag+tehnologiju. Ta tehnologija ima jake sinergističke učinke između općenite antimikrobne aktivnosti ionskog srebra i specifi čnih spojeva koji pomažu u učinkovitosti ometanja i uklanjanja biofilma.
