Propulsion mechanism of artificial flagellated micro-swimmers actuated by acoustic waves-theory and experimental verification.

This work examines the acoustically actuated motions of artificial flagellated micro-swimmers (AFMSs) and compares the motility of these micro-swimmers with the predictions based on the corrected resistive force theory (RFT) and the bar-joint model proposed in our previous work. The key ingredient in the theory is the introduction of a correction factorKin drag coefficients to correct the conventional RFT so that the dynamics of an acoustically actuated AFMS with rectangular cross-sections can be accurately modeled. Experimentally, such AFMSs can be easily manufactured based on digital light processing of ultra-violet (UV)-curable resins. We first determined the viscoelastic properties of a UV-cured resin through dynamic mechanical analysis. In particular, the high-frequency storage moduli and loss factors were obtained based on the assumption of time-temperature superposition (TTS), which were then applied in theoretical calculations. Though the extrapolation based on the TTS implied the uncertainty of high-frequency material response and there is limited accuracy in determining head oscillation amplitude, the differences between the measured terminal velocities of the AFMSs and the predicted ones are less than 50%, which, to us, is well acceptable. These results indicate that the motions of acoustic AFMS can be predicted, and thus, designed, which pave the way for their long-awaited applications in targeted therapy.

Patient Burden of Nonsegmental Vitiligo: A US Real-World Survey of Dermatologists and Their Patients.

INTRODUCTION: Vitiligo is a chronic autoimmune disease characterized by destruction of melanocytes, leading to skin depigmentation. Vitiligo can have a high quality-of-life burden and profound impact on psychosocial well-being. The objectives of this study were to describe the self-reported patient burden among patients with nonsegmental vitiligo with ≤ 10% affected body surface area, summarize the physician-reported psychosocial and psychological impact of vitiligo on patient lives, and describe disease characteristics and treatment history, goals, and satisfaction. METHODS: Data were drawn from the Adelphi Vitiligo Disease Specific Programme™, a real-world, cross-sectional survey with retrospective data collection of physicians and patients with vitiligo, collected in the United States between October 2021 and April 2022. Separate surveys for dermatologists and patients contained questions on clinical and demographic characteristics of patients with vitiligo and burden of vitiligo. Treatment history, goals, and satisfaction were assessed together with the impact of vitiligo on quality of life. RESULTS: Sixty-one dermatologists provided data for 326 patients with ≤ 10% affected body surface area (adults, n = 221; adolescents, n = 105); 90 of those patients also responded to the survey. The most common treatments were topical corticosteroids, topical calcineurin inhibitors, and narrow-band ultraviolet-B phototherapy, with the main treatment goal being repigmentation. Physician-reported treatment satisfaction was 56%; 25% of patients reported frustration with treatment options. Physicians reported impact of vitiligo on everyday life in 46% of patients. Patients reported 12.7% overall work impairment; mean scores for Hospital Anxiety and Depression Scale anxiety and depression domains were 3.5 and 2.2, respectively, and mean Vitiligo-specific Quality of Life index score was 26.9. Patients with facial involvement experienced higher burden than those without. CONCLUSION: A high patient burden was reported by dermatologists and their patients with vitiligo who had ≤ 10% affected body surface area, including psychosocial and psychological consequences. These findings highlight an unmet need in the treatment of vitiligo.

Vitiligo is a chronic disease in which cells that produce the skin pigment melanin are attacked, causing patches of skin to lose color and become pale. Vitiligo can have emotional impacts such as social or psychological distress that can affect the day-to-day well-being of individuals. However, there is a lack of studies that assess the ways that vitiligo affects the everyday lives of people with the condition in the United States. Dermatologists and people with vitiligo answered survey questions on treatment goals, any vitiligo treatments currently and previously used, and how satisfied they were with the results of treatment. The surveys also contained questions that assessed the impact of vitiligo on everyday life. Sixty-one dermatologists answered questions about 326 patients and 90 of those patients also provided their own answers to the survey questions. Both dermatologists and patients reported that restoring color to patches of pale skin was their goal in treating vitiligo. However, dermatologists and patients both reported that they were dissatisfied with the results of available treatments. Dermatologists and patients both reported that vitiligo impacted aspects of everyday life. Emotional and psychological impacts such as anxiety and depression were reported, as well as negative effects on patients' work and social lives due to vitiligo. These results confirm that vitiligo impacts the day-to-day well-being of patients. Furthermore, this study highlights that there is a need for improvements in the treatment of vitiligo.

Satisfaction with Control of Mild to Moderate Atopic Dermatitis with Ruxolitinib Cream: US Physician and Patient Perspectives.

INTRODUCTION: The 2021 US approval of ruxolitinib cream for treatment of atopic dermatitis (AD) in patients aged ≥ 12 years was based on the results of two pivotal phase 3 studies. Currently, real-world data to describe effectiveness of ruxolitinib cream and physician satisfaction with treatment remain limited. Our objective is to describe disease control among adults with mild to moderate AD prescribed ruxolitinib cream and physician satisfaction with treatment. METHODS: Data were from the Adelphi AD Disease Specific Programme™, a US real-world, cross-sectional survey of physician-reported data, undertaken between August 2022 and March 2023. For patients aged ≥ 18 years, physicians reported patient demographics, clinical characteristics, treatment patterns, and physician satisfaction with disease control. Descriptive analysis of data for patients with mild to moderate AD prior to the initiation of ruxolitinib cream and treated with ruxolitinib cream for ≥ 1 month was undertaken. RESULTS: Among physician-reported data from 1360 patients with AD, 149 patients had received ruxolitinib cream (in combination or as monotherapy) for ≥ 1 month, including 59 patients receiving monotherapy. Prior to treatment with ruxolitinib cream, 84.6% of patients had moderate AD (Investigator's Global Assessment, IGA of 3), whereas after treatment (median duration, 26 weeks), only 21.5% had an IGA of 3, with 48.3% of patients having clear or almost clear skin (IGA of 0/1). For these patients, 81.2% were not currently experiencing a flare, and physicians were satisfied with disease control for 87.3%. Results were similar in patients receiving monotherapy. The most frequent physician-reported reasons for prescribing ruxolitinib cream included relieving itch, improving lesion redness/thickness, achieving disease control, and reducing/controlling flares. CONCLUSIONS: These real-world findings demonstrate effective disease control and physician satisfaction with ruxolitinib cream for the treatment of AD in adults in a clinical practice setting. Outcomes were similar whether ruxolitinib cream was prescribed as monotherapy or in combination regimens, suggesting a role for ruxolitinib cream across the spectrum of disease.

Atopic dermatitis (AD) is a disease in which skin can be itchy, inflamed, and cracked. Traditional therapies for mild to moderate AD can be limited by side effects and long-term safety issues. After US approval of ruxolitinib cream for the treatment of mild to moderate AD in 2021, the goal of this study was to describe disease control and doctor satisfaction with ruxolitinib cream in a real-world setting. The Adelphi AD Disease Specific Programme™ surveyed 159 doctors who treated people with AD between August 2022 and March 2023. Doctors reported records from 1360 patients with mild to moderate AD. In these patients, ruxolitinib cream was used for at least 1 month in 149 patients and was used alone in 59 patients. Before the use of ruxolitinib cream, nearly 85% of the 149 patients had moderate AD. After the use of ruxolitinib cream, about 20% had moderate AD, with half having clear or almost clear skin. About 80% were not currently experiencing flares. Doctors were satisfied with disease control in more than 85% of patients. Patients applying ruxolitinib cream alone had similar results. Doctors most often prescribed ruxolitinib cream for itch relief, disease control, and to reduce or control flares. In summary, when ruxolitinib cream was used by patients, it provided good disease control, and doctors were satisfied with results. Outcomes were similar in patients who applied ruxolitinib cream alone or with another treatment. This suggests that ruxolitinib cream may be useful for patients with AD of differing levels of severity.

Maxillary impacted canine replacing a central incisor with root resorption: Multidisciplinary treatment in a preadolescent patient.

Maxillary canines are often impacted, which can result in tooth disorders and adversely affect occlusal and facial development. The case report describes complete bilateral impaction of maxillary canines and significant root resorption of a central incisor. The multidisciplinary approach is the optimal strategy for addressing impacted maxillary canines.