Swarms of Enzyme-Powered Nanomotors Enhance the Diffusion of Macromolecules in Viscous Media.

Over the past decades, the development of nanoparticles (NPs) to increase the efficiency of clinical treatments has been subject of intense research. Yet, most NPs have been reported to possess low efficacy as their actuation is hindered by biological barriers. For instance, synovial fluid (SF) present in the joints is mainly composed of hyaluronic acid (HA). These viscous media pose a challenge for many applications in nanomedicine, as passive NPs tend to become trapped in complex networks, which reduces their ability to reach the target location. This problem can be addressed by using active NPs (nanomotors, NMs) that are self-propelled by enzymatic reactions, although the development of enzyme-powered NMs, capable of navigating these viscous environments, remains a considerable challenge. Here, the synergistic effects of two NMs troops, namely hyaluronidase NMs (HyaNMs, Troop 1) and urease NMs (UrNMs, Troop 2) are demonstrated. Troop 1 interacts with the SF by reducing its viscosity, thus allowing Troop 2 to swim more easily through the SF. Through their collective motion, Troop 2 increases the diffusion of macromolecules. These results pave the way for more widespread use of enzyme-powered NMs, e.g., for treating joint injuries and improving therapeutic effectiveness compared with traditional methods.

Human-Animal Bond Generated in a Brief Animal-Assisted Therapy Intervention in Adolescents with Mental Health Disorders.

BACKGROUND: The human-animal bond is crucial for the proper development of animal-assisted therapy (AAT) sessions. However, in specific cases such as in AAT focused on psychiatric patients who are admitted to acute units, there is only a short period of time available to establish this bond. OBJECTIVES: To assess the degree of HAB generated after two AAT sessions in adolescents admitted to acute psychiatry units. METHODS: A prospective multicenter cohort study aimed at adolescents aged 13 to 17 years admitted to the acute child and adolescent psychiatry unit of three hospitals. INTERVENTION: Two weekly 1 h group sessions of AAT with therapy dogs. MAIN OUTCOME: The Center for the Study of Animal Wellness Pet Bonding Scale Survey (CSAWPB). RESULTS: One hundred and fourteen adolescents participated. A positive perception of the dog was generated, achieving a good level of bonding and attachment. CONCLUSIONS: The results obtained make it possible to affirm that a short period of time is enough to establish a good HAB between patients and therapy dogs. This study aims to contribute to the study of non-pharmacological interventions as a complement to pharmacological treatments in adolescents with mental health disorders.

The sexual health approach in postmenopause: The five-minutes study.

OBJECTIVES: To determine whether actively addressing sexuality in a gynaecological consultation with menopausal patients improves the diagnosis of sexual problems. STUDY DESIGN: A multi-centre analytical cross-sectional study was conducted at 12 Spanish hospitals. In gynaecological consultations the usual medical histories were taken, except that, initially, issues relating to sexuality were omitted, unless the patients raised them. Then, after 5min, gynaecologists offered the possibility of talking about sexuality and asked about possible sexual problems. Main outcome measures Observed prevalence of sexual problems. RESULTS: A total of 256 postmenopausal women participated in the study. Of them, 12.1% reported a sexual problem during the first 5 minutes of the interview. The prevalence of patients with a sexual problem increased by 35.9% (from 12.1% to 48.0%) when they were asked about sexuality after 5min (p<0.0001). The main factors associated with having a sexual problem were genitourinary syndrome of menopause (GSM) and having a stable sexual partner. CONCLUSIONS: Asking postmenopausal women about sexuality in gynaecological consultations is an important tool that increases the number of diagnoses of sexual problems. Gynaecologists should routinely ask about sexuality.

Lidocaine-prilocaine (EMLA(®) ) cream as analgesia in hysteroscopy practice: a prospective, randomized, non-blinded, controlled study.

We investigated the efficacy of 5% lidocaine 25 mg-prilocaine 25 mg/g cream (EMLA(®) ) applied to the uterine cervix for reducing pain during diagnostic or operative hysteroscopy, using a visual analogue scale (VAS) for pain in a prospective randomized, non-blinded, controlled study in 92 successive patients. Patients were randomized to either 3 mL of EMLA cream or 3 mL of ultrasound gel (placebo), placed endocervically and exocervically, 10 min before hysteroscopy. Intensity of pain was evaluated immediately after the procedure using a 10-cm VAS. No differences were found between the two groups (p = 0.07). The number of women who wished to stop the procedure was significantly lower in the EMLA group compared with the control group (p = 0.013). We concluded that topical instillation of EMLA does not decrease pain during hysteroscopy, but does reduce a desire to abandon the procedure.