The Efficacy of Stem Cells in Wound Healing: A Systematic Review.

Wound healing is an intricate process involving coordinated interactions among inflammatory cells, skin fibroblasts, keratinocytes, and endothelial cells. Successful tissue repair hinges on controlled inflammation, angiogenesis, and remodeling facilitated by the exchange of cytokines and growth factors. Comorbid conditions can disrupt this process, leading to significant morbidity and mortality. Stem cell therapy has emerged as a promising strategy for enhancing wound healing, utilizing cells from diverse sources such as endothelial progenitor cells, bone marrow, adipose tissue, dermal, and inducible pluripotent stem cells. In this systematic review, we comprehensively investigated stem cell therapies in chronic wounds, summarizing the clinical, translational, and primary literature. A systematic search across PubMed, Embase, Web of Science, Google Scholar, and Cochrane Library yielded 22,454 articles, reduced to 44 studies after rigorous screening. Notably, adipose tissue-derived mesenchymal stem cells (AD-MSCs) emerged as an optimal choice due to their abundant supply, easy isolation, ex vivo proliferative capacities, and pro-angiogenic factor secretion. AD-MSCs have shown efficacy in various conditions, including peripheral arterial disease, diabetic wounds, hypertensive ulcers, bullous diabeticorum, venous ulcers, and post-Mohs micrographic surgery wounds. Delivery methods varied, encompassing topical application, scaffold incorporation, combination with plasma-rich proteins, and atelocollagen administration. Integration with local wound care practices resulted in reduced pain, shorter healing times, and improved cosmesis. Stem cell transplantation represents a potential therapeutic avenue, as transplanted stem cells not only differentiate into diverse skin cell types but also release essential cytokines and growth factors, fostering increased angiogenesis. This approach holds promise for intractable wounds, particularly chronic lower-leg wounds, and as a post-Mohs micrographic surgery intervention for healing defects through secondary intention. The potential reduction in healthcare costs and enhancement of patient quality of life further underscore the attractiveness of stem cell applications in wound care. This systematic review explores the clinical utilization of stem cells and stem cell products, providing valuable insights into their role as ancillary methods in treating chronic wounds.

A case study on the dermatoscopic findings of Darier's disease in skin type VI.

We present dermatoscopic findings of long-standing, untreated Darier's disease (DD) in skin type VI that differs from current findings in literature. Robust hyperkeratotic polygonal-shaped plugs without a surrounding white halo and classic vascular features were noted on the anterior scalp, neck, axilla, midline trunk, and extensors. Through this case, we aim to contribute to emerging literature in describing features of DD under dermatoscopy to augment diagnosis.

Rethinking the Inflammatory Balance in Psoriasis and Atherosclerosis.

Guénin S, Kazemi A, Cline A, et al. Rethinking the inflammatory balance in psoriasis and atherosclerosis. J Drugs Dermatol. 2023;22(8):832-833. doi:10.36849/JDD.7082.

"COVID toes": A true viral phenomenon or a diagnosis without a leg to stand on?

"COVID toes" is the colloquial name of chilblain-like lesions thought to be a sequela of COVID-19 infection. Over two years and approximately 300 publications later, this association remains controversial. Here, we summarize key clinical, serological, biological, histological, and immunological evidence that supports and rejects this relationship and discuss alternate theories underlying the pathogenesis of chilblain-like lesions.

Applications of Reflectance Confocal Microscopy in the Diagnosis of Fungal Infections: A Systematic Review.

Cutaneous and adnexal fungal infections are typically diagnosed with potassium hydroxide (KOH) skin scrapings, fungal cultures, and Periodic acid-Schiff (PAS) biopsy staining. All three current methods of fungal diagnosis require sample processing and turnover time which leads to a delay in diagnosis. Reflectance confocal microscopy (RCM) is a non-invasive, in vivo skin imaging technology that provides real-time dermatologic diagnoses. We present an updated systematic review of the applications of RCM in diagnosing fungal infections in an effort to explore the utility of RCM as an adjunct clinical tool in detecting cutaneous and adnexal fungi We systematically searched the MEDLINE (via PubMed) for studies published from January 2000 to October 2022 that described the utility of RCM in the setting of fungal infections. Of the 25 studies that met the inclusion criteria, 202 patients were included. The following information on the application of RCM in the setting of fungal infections was extracted from each study, if reported: study type, year published, number of patients included, diagnosis/diagnostic methods, and RCM description. Concordant within all included studies, fungal infections presented on RCM as bright, linear, branching, filamentous structures at the level of stratum corneum. A limitation of this review is that 11 of 25 studies were case reports (n = 1). Larger scale studies should be conducted to explore the utility of RCM in diagnosing fungal infections and to enrich the RCM descriptions of specific fungal conditions.

Hair-Loss Perceptions and Treatment Expectations in Young People of Color.

BACKGROUND: While much research has been dedicated to hair loss in older patients, little has addressed hair loss perception and treatment expectations among young people of color (POC). This study evaluates disease perceptions, willingness to utilize specific therapies, and treatment expectations in younger versus older POC with any form of hair loss. METHODS: An online survey was utilized to analyze 217 responses to 37 questions assessing perceptions of hair loss, hair care practices, and treatment expectations among others. These parameters were measured on a 1–5 Likert scale. Comparison between groups was be done using Chi-Square tests for proportions and Student t-tests. RESULTS: Included were 52 respondents between the ages of 18 and 29 (POC<30), and 36 respondents greater than 30 years of age (POC>30). The reported average hair loss in POC<30 was 67.0%, compared to POC>30 reporting 60.0% (P<0.05). Average embarrassment was 2.6 for POC<30 versus 3.4 for POC>30 (P<0.001). Average pain was 2.0 for POC<30 versus 1.8 for POC>30 (P<0.05). Average hair thinning was 3.0 for POC<30 versus 3.7 for POC>30 (P<0.001). Average willingness to use topical treatments including creams, solutions, ointments, and gels was 3.0 in POC<30 versus 3.8 in POC>30 (P<0.001). The average perceived effectiveness of topical treatments was 2.9 in POC<30 versus 3.6 in POC>30 (P<0.01). CONCLUSION: Early identification and appropriate management of young POC with hair loss may facilitate follicular rescue. This, in turn, may help reduce the negative consequences of advanced hair loss, such as embarrassment, as seen in older POC. J Drugs Dermatol. 2021;20(7):746-750. doi:10.36849/JDD.5960.

Scar tissue I wish you saw: Patient expectations regarding scar treatment.

Although many invasive and noninvasive approaches exist, management of keloids and hypertrophic scars remains challenging. By better understanding patient expectations regarding scar treatments, dermatologists can provide higher quality and more satisfying care. Survey patients age 18 to 80 years with a history of hypertrophic, keloid, or disfiguring scars. Overall, 187 participants completed the 25-question survey. Expectations and willingness were measured on a 1-5 Likert scale. Results were analyzed overall and by patient demographics. Older respondents more often expected scar reduction, while younger patients expected scar removal. Compared with Caucasians, Asian respondents were more symptomatic, more likely to have seen a physician, and more willing to undergo invasive therapies. Respondent willingness for treatment and their perceived efficacy significantly differed across gender, age, and race. This study explores a gap in the literature of what role patient expectations play in electing specific treatments. Although patient expectations are complex and context dependent, gaining more understanding of what therapies patients are willing to attempt, and their expectations from those therapies could help guide counseling with the goal setting realistic expectations to improve patient compliance and satisfaction.

Prognostic Biomarkers in Melanoma: Tailoring Treatments to the Patient.

BACKGROUND: It is often difficult to accurately predict how a melanoma will progress because melanomas can be so diverse in their genetic and histological makeup. OBJECTIVE: We sought to characterize the current state and progression of biomedical markers towards their utilization as prognostic indicators for patients with melanoma. METHODS: A literature search of the research repository databases PubMed and GoogleScholar was conducted using the following inclusion criteria: (1) published within the last 10 years, and (2) use of overall survival, disease progression, or clinical outcome as primary endpoints. Search terms included various permutations of "biomarkers," "prognostic," "immunologic," "serologic," "visual," and "melanoma." Results were evaluated for statistical power, results significance, and experimental design integrity. RESULTS: The prognostic capabilities of clinical tests for malignant melanoma have made great strides in the last few years, with several serologic and immunohistochemical biomarkers being preliminarily linked to various measures of clinical prognosis. While clinical feasibility of a single sensitive and specific biomarker remains unfeasible, use of select combinations of tested biomarkers remain viable. CONCLUSION: Diagnostic and prognostic genetic assays have begun to cross over from research to commercial application, giving physicians additional tools during the early stages of diagnosis to optimize and individualize treatments.

Eczema Herpeticum: Would You Know It If You Saw It?

Eczema herpeticum is an easily missed entity most commonly seen in the pediatric population and carries the risk of systemic compromise and a 10% mortality rate. Clinicians should maintain high clinical suspicion when encountering children or young adults with a history of atopic dermatitis or other erosive dermatoses and who present with vesicular lesions, punched-out erosions, and systemic symptoms. We present 3 severe cases of eczema herpeticum that were potentially overlooked and demonstrate the need for elevated awareness to avoid potential pitfalls.

Diagnostic and prognostic biomarkers in melanoma.

Melanoma is a lethal melanocytic neoplasm. Unfortunately, the histological diagnosis can be difficult at times. Distinguishing ambiguous melanocytic neoplasms that are benign nevi from those that represent true melanoma is important both for treatment and prognosis. Diagnostic biomarkers currently used to assist in the diagnosis of melanoma are usually specific only for melanocytic neoplasms and not necessarily for their ability to metastasize. Traditional prognostic biomarkers include depth of invasion and mitotic count. Newer diagnostic and prognostic biomarkers utilize immunohistochemical staining as well as ribonucleic acid, micro-ribonucleic acid, and deoxyribonucleic acid assays and fluorescence in situ hybridization. Improved diagnostic and prognostic biomarkers are of increasing importance in the treatment of melanoma with the development of newer and more targeted therapies. Herein, the authors review many of the common as well as newer diagnostic and prognostic biomarkers used in melanoma.