Publications by authors named "Ullmann Y"

Chronic wounds have a significant impact on a patient's quality of life. Different pathologies, such as poor blood supply and tissue breakdown, may lead to inadequate oxygenation of the wound. Hyperbaric oxygen (HBO) is a widely used treatment for an increasing number of medical practices.

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Partial-thickness burns are the most common form of burns, affecting the dermis and possibly resulting in scarring and infection. The Spincare System is a new device that uses electrospinning technology to create a temporary skin-like matrix that can be applied to wounds. This study evaluated the performance, safety, and efficacy of Spincare in treating superficial to partial-thickness burns not considered for surgery.

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Objective: Skin adhesives offer many advantages over traditional wound-closure devices. Recently, the current research group reported on tissue adhesives composed of natural polymers (gelatin and alginate), which are biocompatible with mechanical properties suitable for tissue adhesion. The objective of the present study was to conduct clinical and histologic assessment of this hemostatic bioadhesive in the healing of long skin incisions (≥4 cm) in comparison with traditional and commercially available methods.

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Here, we have explored the involvement of innate lymphoid cells-type 1 (ILC1) in the pathogenesis of alopecia areata (AA), because we found them to be significantly increased around lesional and non-lesional HFs of AA patients. To further explore these unexpected findings, we first co-cultured autologous circulating ILC1-like cells (ILC1lc) with healthy, but stressed, organ-cultured human scalp hair follicles (HFs). ILClc induced all hallmarks of AA ex vivo: they significantly promoted premature, apoptosis-driven HF regression (catagen), HF cytotoxicity/dystrophy, and most important for AA pathogenesis, the collapse of the HFs physiological immune privilege.

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Background: Implant-based breast reconstruction (IBR) is the most common method of reconstruction for breast cancer. Bacterial infection is a well-known risk with reported rates ranging from 1% to 43%. The most common pathogens of breast implant infection described in the literature are Staphylococcus aureus, Staphylococcus epidermidis, and coagulase-negative staphylococci.

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Background: The key signals that suffice to induce atopic dermatitis (AD) in human skin remain incompletely understood. Also, current mouse models reflect human AD only unsatisfactorily. Therefore, we have asked whether a humanized AD mouse model can be developed that reflects human AD more faithfully and permit to identify key signals that suffice to induce AD lesions in previously healthy human skin in vivo.

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Transplanting aged human skin onto young SCID/beige mice morphologically rejuvenates the xenotransplants. This is accompanied by angiogenesis, epidermal repigmentation, and substantial improvements in key aging-associated biomarkers, including ß-galactosidase, p16, SIRT1, PGC1α, collagen 17A, and MMP1. Angiogenesis- and hypoxia-related pathways, namely, vascular endothelial growth factor A (VEGF-A) and HIF1A, are most up-regulated in rejuvenated human skin.

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The coronavirus disease 2019 (COVID-19) pandemic forced many countries into lockdowns to limit the spread of infection. Israel's containment measures included school closures, mobility restrictions, and workforce reductions. Our study evaluated the effect of COVID-19 on the occurrence and patterns of burn injuries.

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The Novel Coronavirus disease (COVID-19) first emerged in Wuhan province, China, in late November 2019 and changed public healthcare perception. It has caused a significant decline in attendance to outpatient clinics. However, other diseases have not stopped, including malignant melanoma.

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The diabetic foot ulcer (DFU) is a major disabling complication of diabetes mellitus. Growing evidence suggests that topical erythropoietin (EPO) can promote wound healing. The aim of this study is to clinically assess the efficacy of a proprietary topical EPO-containing hydrogel for treating DFUs.

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Background: Burns are estimated to cause up to 1% of admissions to emergency department in low- and middle-income countries, and up to 220 admissions per 100 K people in high income countries. Knowing the special features in every population could help formulate prevention strategies tailored for the specific group targeted and thus help decrease the incidence of burns in the general population.

Patients And Methods: We examined all patients files admitted to the Rappaport hospital within Rambam Medical Center between the years 2012-2016.

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Coronavirus disease 2019 obliged many countries to apply lockdown policies to contain the spread of infection. The restrictions in Israel included limitations on movement, reduction of working capacity, and closure of the educational system. The present study focused on patients treated at a referral center for burns in northern Israel.

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This case report presents a 19-year-old Israeli soldier who sustained injury as a result of a lightning strike during an outdoor military activity. The patient was found in a state of altered consciousness and respiratory distress. He suffered multiple second-degree burns to the neck, chest and abdomen area, corresponding to the locations of his metal identification tag, rifle and belt buckle.

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Background: Merkel Cell Carcinoma (MCC) is an aggressive neuroendocrine skin cancer. Though rare, in recent decades its prevalence has increased, and its incidence has tripled.

Objectives: To describe a cohort of MCC patients treated at a referral center in northern Israel, and to compare their characteristics and course of illness to cases reported in the literature.

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Background: Melanoma is a malignant tumor of melanocytes, whose prevalence has been increasing in recent decades. Early diagnosis allows removal of the tumor prior to the metastatic stage and may lead to a complete recovery.

Objectives: To compare melanoma incidence among different epidemiological groups in northern Israel, and to assess the impact of migration on the increase in incidence of the disease.

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Most pediatric burns are 2nd degree partial thickness, and most will heal spontaneously by providing a good healing environment, though there is no standardized treatment protocol. Aquacel Ag® has shown good clinical results in reducing the need for frequent dressing changes in the pediatric population. This study's goal was to review our experience using this dressing for pediatric partial thickness burns in order to optimize and customize its use.

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To inform on the interim results of the Remede d'Or study, which is a prospective, multicenter, single-blind, randomized, controlled clinical study on the safety and efficacy of RMD-G1, a topical carbopol-based hydrogel with a fibronectin matrix whose active pharmaceutical ingredient is erythropoietin (EPO), for treating diabetic foot ulcers (DFU). The trial will comprise 20 patients with type 2 diabetes mellitus with neuroischemic DFUs who will be randomized into two groups: (1) a control group in which standard-of-care (SOC) will be used to treat the DFUs, and (2) a test group in which SOC and RMD-G1 will be used to treat the DFUs. On day 0, all participants will be randomized to receive either RMD-G1 and SOC treatment or SOC alone.

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Activated T cells are pathological in various autoimmune and inflammatory diseases including Psoriasis, and also in graft rejection and graft-versus-host-disease. In these pathological conditions, selective silencing of activated T cells through physiological receptors they express remains a clinical challenge. In our previous studies we found that activation of dopamine receptors (DRs) in resting human T cells activates these cells, and induces by itself many beneficial T cell functions.

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A 49-year-old patient with a genetic expression of BRCA1, was admitted for a bilateral mastectomy and immediate reconstruction with tissue expander, following left breast malignancy (post-lumpectomy and radiation in the same breast). After the operation there were signs of infection in the left breast, for which she was treated with antibiotics. A few days later, mild neurological signs appeared, which resulted in an extensive investigation, and the next day a seizure occurred.

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Background: The use of social media is growing tremendously along with its impact on the practice of plastic surgery, for better or for worse. Patients are increasingly using social media to obtain information about either the procedure or the surgeon.

Objectives: The aims of this study were to examine social media posting regarding plastic surgery and to analyze successful online communication methods of the plastic surgeons with the public.

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Background: Pneumonia is a major cause of morbidity and mortality in burn patients with inhalation injuries. An increased risk of pneumonia has been demonstrated in trauma and burn patients urgently intubated in the field vs. emergency departments (EDs).

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Introduction: Cutaneous squamous cell carcinoma (SCC) is a common skin cancer, second in incidence only to basal cell carcinoma (BCC). The incidence of SCC increases significantly with age; thus, it is rarely diagnosed in young patients. In this paper, we present two cases of young patients who presented clinically with purulent lesions that were later diagnosed as large primary SCCs.

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