Effects of microwaves (900 MHz) on the cochlear receptor: exposure systems and preliminary results

The purpose of this paper is to present the experimental device and the work in progress performed in search for objective organic correlation of damage to hearing, examining possible acoustic otofunctional effects on the cochlear epithelium of the rat due to exposure to microwaves (900 MHz). Two experiments using male Sprague-Dawley rats were carried out with a far-field exposure in a cubic chamber. No statistically significant evidence was obtained at both specific absorption rate (SAR) values. The exposure system and the diagnostic apparatus are extremely useful to investigate a potential effect on the auditory system: however, with the parameters applied in these experiments, no evidence was observed.

Hyperthermia and paclitaxel--epirubicin chemotherapy: enhanced cytotoxic effect in a murine mammary adenocarcinoma

Multimodality therapy is considered of great interest in the treatment of locally advanced solid tumours. In previous experiments, paclitaxel (TX) and epirubicin (EP) were combined with different schedules, obtaining a superadditive effect on the growth of a murine mammary carcinoma. In the present study, the authors have analysed the possible use of hyperthermia (HT) to increase the efficacy of TX and EP combinations. Tumours were transplanted into the right hind foot of female hybrid (C3D2F1) mice. Both TX and EP were administered i.p in two different doses. Hyperthermia was applied using a water bath at 43.2 degrees C for 1 h. Results were analysed in terms of Tumour Growth Delay (TGD). The maximum tolerated doses in combined protocols were TX 45 mg/kg and EP 9 mg/kg, with an interval time of 24h between the two administrations. TGDs of some of the schedules performed are reported: EP + HT = 11 days, TX + HT = 16 days, TX + EP (with an interval time of 24 h) = 14 days, and TX + EP + HT = 22 days. In the experimental model, HT significantly increases the effects of both TX and EP. TX + EP + HT treatment is the most effective (significantly different from TX + EP), but not in a significant way when compared to TX + HT treatment. These results suggest the possible use of a TX + HT protocol for local tumour response, whereas EP could be added in order to achieve a better systemic control.

Preliminary Results of Sensorimotor Room Training for the Improvement of Sensory and Motor Skills in Children with Autism Spectrum Disorders

Background: Motor skills in early and middle childhood are essential for physical play, social interactions, and academic development. Children with autism spectrum disorder (ASD) often exhibit atypical sensory responses, which can impact self-care and other developmental areas. This study explores the impact of sensory and motor rehabilitation using a Motor Sensory Room to stimulate motor development in children with ASD. Methods: Twenty-five children with ASD, preschool and school-aged (2-10 years), were divided into three groups based on the DSM-5 severity levels. The PEP-3 scale was used to assess cognitive, language, motor, emotional, social, and behavioral development. Ten children underwent a 3-month Motor Sensory Room intervention, and data were collected longitudinally. A control group of ten children, matched in age, sex, and diagnosis, did not receive the intervention. A 12-month follow-up is planned for all participants. Results: Children exhibited diverse profiles. Type B subjects displayed more severe symptoms, while Type A showed milder symptoms with better language and interpersonal skills. After the 3-month intervention, improvements were noted in several PEP-3 areas. For sensory levels (hypo-reactivity), the percentage of individuals at medium levels increased from 44% to 50%. For hyper-reactivity, the percentage at medium levels rose from 30% to 40%. Motor skills improved, with the percentage of individuals with high motor abilities rising from 20% to 25%. Relational behaviors also saw gains, with an increase from 50% to 55% in medium-level behaviors. The experimental group demonstrated better outcomes compared to the control group, particularly in sensory and motor skills. Conclusions: Preliminary findings suggest that sensory and motor training in a Motor Sensory Room improves sensory integration, motor coordination, and social interaction in children with ASD. Further research is needed to confirm long-term benefits.