Dermatology practical & conceptual最新文献

Introduction: Squamous cell carcinoma of the skin (SCCs) is the second most common skin cancer, with continuously increasing incidence. Programmed cell death ligand 1 (PD-L1), programmed cell death 1 receptor (PD-1), and CD8 expression in primary SCCs have not been described in many studies.

Objective: We investigated the association between PD-L1, PD-1, CD8, and clinicopathological prognostic factors for recurrence, metastasis, and mortality of SCCs.

Patients and methods: Immunohistochemically stained sections of 100 primary SCCs divided into two groups according to diameter of the tumors (<20 mm and >20 mm) were assessed. Recombinant rabbit anti-PD-L1 antibody [SP142] - C-terminal, rabbit monoclonal anti-PD1 antibody [NAT105], and FLEX Mono Mo A-Hu CD8, cl C8/144B, RTU were used.

Results: We did not establish statistically significant differences between PD-L1, PD-1, CD8 expression, and high-risk clinicopathological features - tumor size >20 mm, depth >6 mm, poor tumor cell differentiation, perineural/lymphovascular invasion, low/absent lymphocyte stromal reaction.

Conclusions: In primary SCCs, the expression of PD-L1, PD-1, and CD8 are not associated with high-risk clinicopathological factors. We suggest that these immunohistochemical markers are more significant in advanced cases and metastatic tissues.

Introduction: Psoriasis is a frequent and incurable skin disease that is an important issue in contemporary dermatology, although its pathogenesis is still uncertain. Gasdermin A (GSDMA) is a member of the gasdermin protein family which are able to cause pore formation in cellular membranes leading to cell death called pyroptosis.

Objective: Our aim was to investigate the role of GSDMA in psoriatic patients.

Method: The study enrolled 60 patients with active plaque-type psoriasis and 30 sex- and age-matched volunteers without dermatoses. GSDMA concentration was assessed in serum and urine samples of all participants using ELISA. GSDMA tissue expression was assessed by immunohistochemistry.

Results: GSDMA serum concentration was significantly higher in patients compared to controls, whereas urinary GSDMA/creatinine ratio was insignificantly lower. GSDMA tissue expression was more prominent in psoriatic plaque compared to non-lesional patients' skin and healthy skin of subjects without dermatoses. There was a strong negative correlation between GSDMA serum concentration and ALT activity. GSDMA did not correlate with PASI or psoriasis duration.

Conclusions: Obtained results point to the probable involvement of GSDMA in psoriasis. GSDMA overexpression may probably lead to keratinocytes hyperproliferation and be responsible for triggering inflammation in psoriatic skin. Serum GSDMA could become psoriasis biomarker, whereas urinary GSDMA, not at this point.

Introduction: Folliculitis decalvans (FD) is a rare scarring alopecia mainly affecting middle-aged men, characterized by recurring episodes of follicular pustules, crusts, erythema, tufted hairs, and scars.

Objectives: This study investigates the effectiveness of reflectance confocal microscopy (RCM) compared to trichoscopy for diagnosing and monitoring FD.

Methods: The study involved 24 Caucasian patients diagnosed with FD. Patients were examined using trichoscopy and RCM, with a focus on specific features like erythema and inflammatory cell distribution. A subgroup of 16 patients was followed up after 3 months of therapy. The reproducibility of RCM and trichoscopy was assessed using Cohen Kappa Test.

Results: RCM and trichoscopy consistently detected features such as tufted hairs, pustules, and perifollicular fibrosis. However, RCM provided more detailed insights into inflammatory activity and types of fibrosis, often overlooked by trichoscopy. It showed a reduction in vessels and inflammatory cells, which trichoscopy failed to detect. The concordance between RCM evaluations was excellent, indicating high reproducibility.

Conclusions: RCM is effective in diagnosing and monitoring FD, offering detailed insights into inflammation and fibrosis. It complements trichoscopy, especially in aspects where trichoscopy is limited, such as precise measurement of inflammation. The study suggests that combining RCM with trichoscopy could enhance the accuracy of diagnosis and monitoring of FD, leading to tailored therapeutic approaches. Further studies with larger sample sizes and longitudinal designs are recommended to confirm these findings.

Introduction: Psoriasis is a chronic systemic inflammatory disease that affects millions of people worldwide. While its physical manifestations are well-documented, the psychosocial impact of psoriasis, particularly on female patients, is an area of growing concern. Feelings of shame, inferiority, and stigma are common among individuals with psoriasis, and these emotional burdens can be especially pronounced in females, particularly when the genital area is affected.

Objectives: We aimed to shed light on the significance of genital psoriasis on the overall well-being of female patients.

Methods: This cross-sectional, descriptive comparative study comprised 50 female participants diagnosed with psoriasis: 25 with genital psoriasis, 25 without genital psoriasis, and 25 healthy women matched for age and sex who served as the control group. All participants underwent an assessment of disease severity using the Psoriasis Area and Severity Index in the psoriasis group and completed questionnaires for the assessment of the Female Sexual Function Index (FSFI). Additionally, quality of life was evaluated using the Dermatology Life Quality Index, and the Female Genital Self-Image Scale (FGSIS) was used to assess genital self-image.

Results: We found that females with genital lesions, experience a notable decline in sexual health with higher levels of sexual distress compared to healthy individuals. In terms of the six FSFI domains, the psoriatic group scored lower than the control group in all areas, except for pain, which showed a significant increase. Psoriatic females also exhibited a significantly more negative FGSIS compared to the control group, and there was a highly significant difference in FGSIS between females with and without genital psoriasis.

Conclusions: Understanding the impact of genital psoriasis on female sexual health and overall quality of life is essential for comprehensive patient care. This research is instrumental in addressing the psychosocial aspects of psoriasis and enhancing patient well-being.

Actinic keratosis (AK) is a frequent precancerous skin lesion that mostly affects chronically sun-exposed areas. Chronic sun damage leads to various mutations in onco-suppressor and oncogenic genes which cause an uncontrolled proliferation of atypical keratinocytes. Untreated AKs may evolve in cutaneous squamous cell carcinoma (cSCC), with the consequent need for dermato-surgical excision or even for systemic immunotherapy in case of invasive/metastatic cSCCs. Epidemiology data on AK prevalence are various, however, the literature unanimously reports an increasing prevalence due to the aging of the population. Clinically AKs appear as a scaly, erythematous macule or papule or hyperkeratotic plaque. Management of AKs and the field of cancerization is important to avoid the natural evolution into squamous cell carcinomas (SCCs). Both physical and topical treatments are approved for managing AKs. Patient compliance with topical regimens is usually low due to the length of the posology and frequent skin adverse events. A recently approved tirbanibulin-based ointment, showed potential for inhibiting cell proliferation and blocking SRC-kinases, implicated in the progression of AKs in SCCs. The advantage of this new treatment is the practical posology, with a daily application for 5 consecutive days on AKs of the face-scalp area. Local skin reactions are usually mild and do not require treatment discontinuation. The short course of this new therapy and its excellent tolerance massively increased patient compliance. This article reviews what is currently known about this new therapy from its mechanism of action to clinical trial outcomes regarding safety, effectiveness, and patient adherence to the treatment.

Introduction: Atrophic acne scarring, a common sequela of acne, can be treated by different interventions, including microneedling and laser resurfacing.

Objectives: We sought to evaluate the comparative efficacy of microneedling versus fractional CO2 laser in treating atrophic acne facial scars using imaging with high and ultra-high frequency ultrasound.

Methods: Participants received 2 sessions, separated by 1 month, of microneedling on the left side of the face and fractional CO2 laser on the right. Color Doppler ultrasound evaluations (24 and 70 MHz) were conducted at baseline and 3 months after treatment. Each patient completed questionnaires on satisfaction, pain, and adverse effects.

Results: Nine subjects were enrolled. The frequency order of scar types was boxcar, ice-pick, and rolling. At 3 months, using the acne scar clinical evaluation scale, a decrease in scar scores of both methods was observed for total scars (P = 0.0005), ice-pick scars (P = 0.0128), and rolling scars (P = 0.0007). Twenty-two scars analyzed by ultrasound demonstrated a trend to decrease in size; however, no significant changes were observed for either microneedling or CO2 laser treatments. Moreover, there were no significant differences between these methods. Both treatments were rated as good or very good by patient assessments. There was a low frequency of pain and hyperpigmentation reported with both modalities, albeit somewhat higher with microneedling.

Conclusions: Both microneedling and CO2 laser improved atrophic acne scars. Ultrasound did not show significant differences between these modalities.