Worldwide burden of liver cancer across childhood and adolescence, 2000-2021: a systematic analysis of the Global Burden of Disease Study 2021.

Background: Liver cancer is a significant contributor to the global disease burden, of which hepatoblastomas are the most common liver tumors in children, with 90% of cases occurring within the first 5 years of life. It is important for pediatricians and subspecialists in pediatric gastroenterology and hepatology to have knowledge of the epidemiology and incidence trends of pediatric hepatic cancer, despite its rarity. In the present study, we first provide estimates of the incidence and mortality burden of hepatoblastoma and liver cancer from 2000 to 2021 in the childhood and adolescence. Methods: Liver cancer burden and its attributable risk factors were estimated using data from the Global Burden of Disease Study (GBD) 2021. Percentage change was estimated to show the trend of liver cancer estimates from 2000 to 2021. The age-standardized rate (ASR) and estimated annual percentage change (EAPC) were utilized for measuring hepatoblastomas incidence and deaths rate trends. In accordance with the GBD framework, 95% uncertainty intervals (UIs) for all estimates by averaging the data from 1000 draws, with the lower and upper bounds of the 95% UIs. Findings: Globally, from 2000 to 2021 in the age 5-19 years group, the incidence cases and deaths cases due to liver cancer decreased from 2449.2 (95% UI: 2235.9-2689.8) to 1692.9 (95% UI: 1482.0-1992.5) and 2248.5 (95% UI: 2053.7-2474.9) to 1516.6 (95% UI: 1322.1-1797.9), respectively. Meanwhile, from 2000 to 2021 in the age 20-24 years group, the incidence cases and deaths cases due to liver cancer decreased from 1453.5 (95% UI: 1327.8-1609.4) to 1285.1 (95% UI: 1159.2-1447.2) and 1432.3 (95% UI: 1307.6-1585.7) to 1195.5 (95% UI: 1066.1-1355.2), respectively. In addition, the prevalence of liver cancer decreased from 41.9% (95% UI: 18.7%-64.7%) to 26.4% (95% UI: 14.2%-39.1%) in the age 5-19 years group, and 46.6% (95% UI: 42.8%-51.5%) to 36.5% (95% UI: 33.1%-40.9%) in the age 20-24 years. From 2000 to 2021, in the age group of 5-19 years, the proportion of liver cancer incidence due to hepatitis B has decreased from 42.2% to 37.9%, while the proportion due to hepatitis C has increased from 1.1% to 1.6%. Additionally, there has been an increase in the proportion of NASH-induced liver cancer incidence from 5.2% to 9.4%, and alcohol use induced liver cancer incidence has also increased from 0.5% to 0.7% over the same period. Globally, from 2000 to 2021, the incidence cases and deaths cases due to hepatoblastoma decreased from 6131.8 (95% UI: 5234.8-6961.9) to 4045.6 (95% UI: 3250-4995.8) and 4059.2 (95% UI: 3494.5-4621.2) to 2416 (95% UI: 1940.2-3022.5), respectively. There was some variation in age-related sex-specific patterns, the highest number of hepatoblastoma incidence cases occurred in children between 2 and 4 years old and females in the age range of 12 months to 9 years had a higher number of new cases. Importantly, the incidence of hepatoblastoma was started to increase sharply after the age of 1 month. Interpretation: The results of the present study are significant for liver health policy and practice in childhood and adolescence. Differentiated intervention and outreach strategies based on age and gender would be necessary to reduce the impact of liver cancer. Early screening and interventions for hepatoblastoma is important especially in the population of under 9 years old. Funding: This study was supported by the National Key R&D Program of China (grant numbers 2023YFC2307000), National Natural Science Foundation of China [grant numbers 82170571 and 81974068], China Postdoctoral Science Foundation (grant numbers 2023M741283).

An open-label 16-week study of liraglutide in adolescents with obesity post-sleeve gastrectomy.

BACKGROUND: Up to 50% of adolescents who undergo metabolic and bariatric surgery (MBS) have obesity 3 years post-MBS, placing them at continued risk for the consequences of obesity. OBJECTIVES: We conducted an open-label, 16-week pilot study of liraglutide in adolescents with obesity after sleeve gastrectomy (SG) to investigate liraglutide effects on weight and body mass index (BMI) post-SG. METHODS: Adolescents aged 12-20.99 years with obesity and a history of SG ≥1 year prior were enrolled. Liraglutide was initiated at 0.6 mg/day, escalated weekly to a maximum of 3 mg/day, with treatment duration 16 weeks. Fasting laboratory assessments and an oral glucose tolerance test were performed at baseline and end-treatment. RESULTS: A total of 43 participants were screened, 34 initiated liraglutide (baseline BMI 41.2 ± 7.7 kg/m2), and 31 (91%) attended the end-treatment visit. BMI decreased by 4.3% (p < 0.001) with liraglutide. Adolescents who had poor initial response to SG (<20% BMI reduction at BMI nadir) had less weight loss with liraglutide. Fasting glucose and haemoglobin A1C concentrations significantly decreased. There were no serious treatment-emergent adverse events reported. CONCLUSIONS: Liraglutide treatment was feasible and associated with a BMI reduction of 4.3% in adolescents who had previously undergone SG, quantitatively similar to results obtained in adolescents with obesity who have not undergone MBS.

"Management of andrological disorders from childhood and adolescence to transition age: guidelines from the Italian Society of Andrology and Sexual Medicine (SIAMS) in collaboration with the Italian Society for Pediatric Endocrinology and Diabetology (SIEDP)-Part-1".

PURPOSE: Andrological pathologies in the adulthood are often the results of conditions that originate during childhood and adolescence and sometimes even during gestation and neonatal period. Unfortunately, the reports in the literature concerning pediatric andrological diseases are scares and mainly concerning single issues. Furthermore, no shared position statement are so far available. METHODS: The Italian Society of Andrology and Sexual Medicine (SIAMS) commissioned an expert task force involving the Italian Society of Pediatric Endocrinology and Diabetology (SIEDP) to provide an updated guideline on the diagnosis and management of andrological disorders from childhood and adolescence to transition age. Derived recommendations were based on the grading of recommendations, assessment, development, and evaluation (GRADE) system. RESULTS: A literature search of articles in English for the term "varicoceles", "gynecomastia", "fertility preservation", "macroorchidism", "precocious puberty" and "pubertal delay" has been performed. Three major aspects for each considered disorder were assessed including diagnosis, clinical management, and treatment. Recommendations and suggestions have been provided for each of the mentioned andrological disorders. CONCLUSIONS: These are the first guidelines based on a multidisciplinary approach that involves important societies related to the field of andrological medicine from pediatric to transition and adult ages. This fruitful discussion allowed for a general agreement on several recommendations and suggestions to be reached, which can support all stakeholders in improving andrological and general health of the transitional age.

Association of High Body Mass Index in Early Life With the Development of Colorectal Cancer.

SIGNIFICANCE: This study on the relationship between early life high BMI and the development of CRC reveals the role of high BMI during childhood and adolescence in the occurrence and progression of CRC. It suggests the importance of restoring normal weight or reducing weight in individuals with high BMI early in life for the prevention of colorectal cancer.

Psychotropic Polypharmacy Combinations and Duration of Polypharmacy Among Medicaid-Enrolled Youths.

OBJECTIVE: This study evaluated psychotropic polypharmacy frequency and patterns of use among Medicaid-enrolled youths. METHODS: A cross-sectional study of a state Medicaid claims database (2015-2020) focused on youths (≤17 years old) with at least one psychotropic medication claim and ≥90 continuous days of Medicaid enrollment. Psychotropic polypharmacy (claims for three or more therapeutic classes of psychotropics for ≥90 consecutive days) was analyzed as average annual days and annual prevalence of class combinations. Multivariable negative binomial regression models assessed changes in annual psychotropic polypharmacy days. RESULTS: A total of 126,972 unique youths were identified. Almost all youths with psychotropic polypharmacy had three-class combinations, the most common of which included attention-deficit hyperactivity disorder medications, antipsychotics, and antidepressants. The number of polypharmacy days increased from a mean±SD of 227.8±90.3 in 2015 to 235.7±97.5 in 2020. Polypharmacy days significantly increased year over year (rate ratio=1.01, 95% CI=1.00-1.01). CONCLUSIONS: Psychotropic polypharmacy regimens reflect chronic use that is increasing over time.

[Modern concept of treatment of adolescents with Class III malocclusion]. / Sovremennaya kontseptsiya lecheniya podrostkov s mezial'noi okklyuziei.

OBJECTIVE: Aim of the work is to increase the effectiveness of complex treatment in patients with mesial occlusion during active skeletal growth. mproving the effectiveness of complex treatment of patients with mesial occlusion during active skeletal growth. MATERIAL AND METHODS: Clinical and radiological examination and comprehensive treatment of 30 patients with skeletal anomalies according to sagittale were carried out (average age 15 years). Orthodontic treatment of patients was performed using the Damon self-ligating bracket system («Ormco¼, USA), H4 («OC Orthodontics¼ USA) with a sequential change of arches. According to the indications, orthodontic mini screws, removable, non-removable dilators, a facial mask, occlusal pads for disconnecting the bite, in the retention period, non-removable retainers in the anterior part of the dentition, a removable retention device at night «Corrector¼, or removable plate devices were used. RESULTS: Rapid palatal expansion was performed according to the traditional method, based on the stages of formation of the median palatine suture (the first algorithm is the stage of formation of the palatine suture A-B). In patients with narrowing of the HF with the stage of formation of the median palatine suture C, the beginning of stage D, the use of the proposed expansion scheme with the use of piezocorticotomy to eliminate the buttresses of the upper jaw, the use of laser corticotomy and the protocol of activation and deactivation of the screw to relax the bone and achieve skeletal expansion of the upper jaw was effective. The change in the dental alveolar height, normalization of the incisor overlap height improved harmony in the gnatic part of the facial skull of patients. In the process of orthodontic treatment, the inclination of the occlusal plane was normalized, the profile of the face improved. Changes in the soft tissues of the profile consisted in an increase in the thickness of the upper lip by 2.27±0.48 mm (p<0.05) and its length by 1.45±0.39 mm (p<0.05), the total length of the lower lip and chin by 3.16±0.45 mm (p<0.05). The position of the lips relative to the aesthetic plane has changed most significantly. An algorithm was developed for the treatment of patients with dental anomalies in the sagittal plane, with a narrowing of the upper jaw during the bite of permanent teeth 12-17 years. CONCLUSION: The method of complex treatment is designed to increase the effectiveness of orthodontic treatment of patients with skeletal abnormalities during active skeletal growth and is aimed at changing skeletal growth, as well as to prevent the development of skeletal malocclusion during permanent bite, which is necessary to prevent the development of more pronounced skeletal deformity at the stage of complete skeletal maturation.

Higher inflammatory proteins predict future depressive symptom severity among adolescents with lower emotional clarity.

BACKGROUND: A growing body of work has implicated inflammation in the pathogenesis of depression. As not all individuals with heightened levels of peripheral inflammation develop symptoms of depression, additional work is needed to identify other factors that catalyze the relationship between inflammation and depressive symptoms. Given that elevated levels of inflammatory activity can induce a variety of emotional changes, the present study examined whether emotional clarity, the trait-like ability to identify, discern, and express one's emotions, influences the strength of the association between inflammatory signaling and concurrent and prospective symptoms of depression. METHODS: Community adolescents (N = 225, Mage = 16.63 years), drawn from a larger longitudinal project investigating sex and racial differences in depression onset, provided blood samples to determine peripheral levels of interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), and C-reactive protein (CRP) at a baseline visit, along with self-report measures of emotional clarity and depressive symptom severity. Depressive symptom severity was assessed again at a follow-up visit approximately 5-months after baseline. RESULTS: Hierarchical multiple regressions detected a significant interaction between inflammatory markers and emotional clarity on future depression severity, controlling for baseline depressive symptoms. Specifically, among adolescents with low levels of emotional clarity, higher levels of IL-6, CRP, and inflammatory composite scores were significantly associated with greater future depression severity. CONCLUSIONS: These results indicate that low emotional clarity and high inflammatory signaling may jointly confer risk for prospective depressive symptom severity among adolescents. Therapeutic interventions that improve emotional clarity may reduce risk of depressive symptoms among adolescents with low-grade peripheral inflammation.

Mature oocyte found during ovarian tissue cryopreservation in an early adolescent female. / 青春初期女性行卵巢组织冷冻过程中发现成熟卵母细胞一例.

A 15-year-old female with Hodgkin's lymphoma underwent ovarian tissue cryopreservation for preserving fertility in Reproductive Department of Sir Run Run Shaw Hospital, Zhejiang University School of Medical after receiving one course of chemotherapy. During the ovarian tissue cryopreservation, one MⅡmature oocyte and three germinal vesicle oocytes were found. The three immature oocytes underwent in vitro maturation but failed. Ultimately, one mature oocyte and 12 ovarian cortex slices were cryopreserved using vitrification. This case indicates that for patients with established gonadal axis feedback, ovarian tissue cryopreservation may not be the only method for fertility preservation. It is advisable to consider ovarian stimulation and oocyte retrieval for oocyte cryopreservation. Alternatively, for individuals in the ovulation phase of their menstrual cycle, attempting oocyte retrieval before ovarian tissue cryopreservation to obtain mature oocytes from the natural cycle, followed by oocyte cryopreservation, may enhance the likelihood of successful fertility preservation.

Do Acculturative Gap Conflicts Impact Parenting Practices and Youth E-Cigarette Use? Tests of Moderated Mediation.

BACKGROUND: Latino/a youth are at increased risk of electronic (e)-cigarette or electronic nicotine delivery systems (ENDS) use; thus, identifying factors impacting initiation is critical. Parenting practices reflecting warmth (e.g., relationship quality) and control (e.g., parental monitoring) and substance use-specific parenting (e.g., reactions to use, parenting self-efficacy) may influence youth substance use. For Latino/a youth, tensions from intergenerational acculturative differences are linked to substance use. We investigated ENDS use-specific parenting as a mediator between general parenting and youth ENDS use, examining whether acculturative gap conflict moderated the association between general and ENDS use-specific parenting. We expected mediation among families experiencing low acculturative gap conflicts. METHOD:  Data were analyzed over two waves from a predominantly White and Latino/a sample of caregiver-child dyads (N = 143) who identified with a culture in addition to or distinct from American. Youth (Mage = 14.9 years, SD = 0.67; 62.9% female) reported relationship quality, parental monitoring, caregiver ENDS attitudes and reactions, acculturative gap conflicts, and ENDS use. Caregivers reported on ENDS use-specific parenting self-efficacy. Two moderated multiple mediator regression models (i.e., relationship quality, parental monitoring) were estimated. RESULTS:  Among youth reporting low and mean levels of acculturative gap conflict, ENDS use-specific parenting self-efficacy mediated the association between relationship quality and reduced ENDS use. There was no evidence for an interaction in the parental monitoring model. CONCLUSIONS:  In families experiencing low levels of acculturative gap conflict, relationship quality may impact ENDS use through caregivers' confidence in their ability to prevent child ENDS use.

Aportes para el abordaje de la salud de las y los adolescentes como sujeto de derechos desde una mirada antropológica / Contributions to address the health of adolescents as rights holders from an anthropological perspective

Este artículo se propone reflexionar en torno al reconocimiento de la condición jurídica de las y los adolescentes como sujeto de derechos en los procesos de atención de la salud de esta población. A partir de la autonomía progresiva y la participación directa entendidos como dos principios rectores de la Convención sobre los Derechos del Niño (CDN), se realiza un contrapunto entre las definiciones presentes en la política de salud en la adolescencia y las prácticas y sentidos puestos en juego por las/os profesionales de la salud. Las reflexiones se basan en el análisis de materiales etnográficos, producidos en una investigación realizada en la ciudad de Bahía Blanca, desde una perspectiva antropológica, centrada en la definición social de las edades. Para cerrar, se plantea una síntesis de algunos aspectos con el propósito de contribuir a la problematización de las nociones de adolescencia desde las cuales se brinda atención sanitaria de esta población. Y de favorecer el abordaje de la salud de las y los adolescentes como sujeto de derechos (AU)

This article aims to reflect on the recognition of the legal status of adolescents as subject of rights in the health care processes of this population. Starting from progressive autonomy and direct participation understood as two guiding principles of the Children's Rights Convention (CRC), a counterpoint is made between the definitions present in health policy in adolescence and the practices and meanings put into play by the health professionals. The reflections are based on the analysis of ethnographic materials, produced in an investigation carried out in the city of Bahía Blanca, from an anthropological perspective, focused on the social definition of ages. To close, a synthesis of some aspects is proposed with the purpose of contributing to the problematization of the notions of adolescence from which health care is provided to this population. And to promote the approach to adolescent health as a subject of rights (AU)

Selective Classes and Early Health Inequalities in Comprehensive Schools in Finland.

BACKGROUND: The origin of inequalities in health outcomes has been explained by health selection and social causation models. Health selection processes operate particularly at school age. We study, if student allocation to teaching groups with aptitude tests (selective vs general class) differentiates adolescents by health behaviors and mental health. METHODS: Finnish schoolchildren 12-13 years from 12 selective classes, n = 248; 41 general classes, n = 703 answered a questionnaire on addictive products (tobacco, snus, alcohol, and energy drinks), digital media use, and mental health (health complaints, anxiety, and depression). Structural equation modeling was conducted to identify structures between outcomes, SEP (socioeconomic position), class type, and academic performance. RESULTS: Students in the selective classes reported less addictive digital media and addictive products use than students in the general classes. Differences in academic performance or SEP between the class types did not solely explain these differences. Mental health was not related to the class type. SEP was indirectly associated with health behaviors via the class type and academic performance. CONCLUSIONS: Selecting students to permanent teaching groups with aptitude tests differentiates students according to risky health behaviors. The impact of education policies using student grouping should also be evaluated in terms of students' health.

Disentangling the effects of self-control and the use of tobacco and cannabis on violence perpetration from childhood to early adulthood.

Associations among self-control, substance use (e.g., tobacco and cannabis use), and violence perpetration have been documented during the adolescent years, but the direction of these associations is not well understood. Using five assessments (covering 9 years) from a prospective-longitudinal study, we examined self-control as a precursor and subsequent mechanism of associations between adolescent substance use and physical violence perpetration. Data came from a large, ethnically diverse sample (n = 1,056). Youth reported their self-control at ages 11, 13, 15, 17, and 20; and their tobacco and cannabis use, and physical violence perpetration at ages 13, 15, 17, and 20. Cross-lagged panel analyses examined associations between these constructs over time. More self-control in late childhood and early adolescence was associated with less future tobacco and cannabis use and physical violence perpetration. Tobacco use was partially associated with more physical violence over time; these associations were not mediated by self-control. Tobacco use in early adolescence was associated with future cannabis use; during late adolescence, tobacco and cannabis use were reciprocally associated over time. Cannabis use was not associated with future physical violence perpetration. Early adolescent self-control plays an important role in later substance use and violence perpetration, and tobacco use has unique links with both later cannabis use and violence perpetration. Supporting the capacities for self-control in late childhood and early adolescence and preventing the initiation and use of entry-level substances could play an important role in preventing both substance use and violence perpetration and their many costs to society.

Perinatal risk factors and subclinical hypomania: A prospective community study.

BACKGROUND: Perinatal risk factors are implicated in the development of psychopathology, but their role in bipolar disorder (BD) and hypomania is unclear. Using data from a prospective community cohort, this is the first study to investigate the association between a range of perinatal risk factors, hypomanic symptoms, and 'high-risk' for BD in the general population. METHODS: Parent report of perinatal events were available for 26,040 eighteen-month-olds from the Twins Early Development Study. Subsequent self-report hypomania was measured at ages 16 (Hypomania Checklist-16; N = 2943) and 26 (Mood Disorders Questionnaire; N = 7748). Participants were categorised as 'high-risk' for BD using established classifications. Linear and logistic regressions were conducted within a generalised estimating equations framework to account for relatedness in the sample. RESULTS: Prenatal alcohol exposure (ß = 0.08, SE = 0.04, p = .0002) and number of alcohol units consumed (ß = 0.09, SE = 0.02, p < .0001) were associated with hypomanic symptoms at age 16, and number of alcohol units (OR = 1.13, 95 % CI:1.06-1.21, p = .0003) and maternal stress (OR = 1.68, 95 % CI:1.21-2.34, p = .002) were associated with 'high-risk' for BD age 16. Prenatal tobacco exposure (ß = 0.10, SE = 0.04, p < .0001) and number of cigarettes smoked (ß = 0.10, SE = 0.01, p < .0001) were associated with hypomanic symptoms and 'high-risk' for BD at age 26, although these result were attenuated controlling for parental psychiatric history. LIMITATIONS: Familial confounding could not be fully adjusted for. Rater reports include some biases. CONCLUSIONS: These findings show perinatal risk factors to be associated with subclinical hypomania and 'high-risk' for BD. Future work should explore the mechanisms underlying these longitudinal associations, which could shed light on prevention and intervention efforts.

Hypersensitivity of the nicotinic acetylcholine receptor subunit (CHRNA2L9'S/L9'S) in female adolescent mice produces deficits in nicotine-induced facilitation of hippocampal-dependent learning and memory.

Adolescence is characterized by a critical period of maturation and growth, during which regions of the brain are vulnerable to long-lasting cognitive disturbances. Adolescent exposure to nicotine can lead to deleterious neurological and psychological outcomes. Moreover, the nicotinic acetylcholine receptor (nAChR) has been shown to play a functionally distinct role in the development of the adolescent brain. CHRNA2 encodes for the α2 subunit of nicotinic acetylcholine receptors associated with CA1 oriens lacunosum moleculare GABAergic interneurons and is associated with learning and memory. Previously, we found that adolescent male hypersensitive CHRNA2L9'S/L9' mice had impairments in learning and memory during a pre-exposure-dependent contextual fear conditioning task that could be rescued by low-dose nicotine exposure. In this study, we assessed learning and memory in female adolescent hypersensitive CHRNA2L9'S/L9' mice exposed to saline or a subthreshold dose of nicotine using a hippocampus-dependent task of pre-exposure-dependent contextual fear conditioning. We found that nicotine-treated wild-type female mice had significantly greater improvements in learning and memory than both saline-treated wild-type mice and nicotine-treated CHRNA2L9'S/L9' female mice. Thus, hyperexcitability of CHRNA2 in female adolescent mice ablated the nicotine-mediated potentiation of learning and memory seen in wild-types. Our results indicate that nicotine exposure during adolescence mediates sexually dimorphic patterns of learning and memory, with wild-type female adolescents being more susceptible to the effects of sub-threshold nicotine exposure. To understand the mechanism underlying sexually dimorphic behavior between hyperexcitable CHRNA2 mice, it is critical that further research be conducted.

Needs of transgender children and adolescents presenting to an urban gender health program.

BACKGROUND: Youth who identify as transgender and gender diverse (TGD) are increasingly presenting to pediatric providers. Gender-affirming surgery is often delayed until after a patient reaches the age of majority; however, patients may desire surgery at a younger age. OBJECTIVE: We explore the specific clinical needs of this vulnerable population, including surgical requests. STUDY DESIGN: We present a cross-sectional study of patient intake interviews at time of presentation to our gender health program from 2017 to 2020. We summarize patient demographics, medical histories, and gender-affirming care needs by gender identity and age of presentation. RESULTS: Of 92 patients analyzed, those included were 19 trans girls, 55 trans boys, and 18 non-binary individuals. The median age of our sample was 15 (range 5-17). The median age (IQR) while first questioning gender was 10 (7-12). Sexual orientation was variable with 28 (43%) not sure/unknown. The majority of patients present for primary care services (grade schoolers 75%, early teens 78%, and late teens 77%, p = 0.97) and hormone management (grade schoolers 42%, early teens 62%, and late teens 77%, p = 0.06). Late teens were more likely to present for surgical services (49%) compared to grade schoolers (25%) and early teens (11%), p = 0.001. Prior psychiatric diagnoses were common in all age groups. Trans girls were interested in a variety of affirming procedures whereas trans boys and non-binary individuals primarily sought chest surgery (see summary figure). CONCLUSION: Pediatric gender affirming care needs are varied and multidisciplinary within our center. By age 16, about half of TGD individuals are seeking surgical services. On average, there was a 4-5 year delay from age at first questioning one's gender and presenting to our gender health program. Primary care physicians in particular may prepare to serve this complex population by familiarizing themselves with treatment needs, including developing a network of competent surgical referrals.

Linalool-rich rosewood essential oil (Aniba rosaeodora Ducke) mitigates emotional and neurochemical impairments induced by ethanol binge-like exposure during adolescence in female rats.

Linalool-rich Rosewood oil (Aniba rosaeodora Ducke) is a natural compound widely used in perfumery industry. Evidence suggests that linalool exerts antidepressant and anxiolytic effects. Conversely, ethanol binge drinking (i.e., intermittent and episodic consumption) during adolescence elicits neurobehavioral alterations associated with brain damage. Here, we investigated whether linalool-rich Rosewood oil administration can improve the emotional and molecular impairments associated with ethanol binge-like exposure during adolescence in female rats. Rosewood oil was obtained by hydrodistillation and posteriorly analyzed. Adolescent female Wistar rats received four-cycles of ethanol binge-like pattern (3 g/kg/day, 3 days on/4 days off) and daily Rosewood oil (35 mg/kg, intranasally) for 28 days. Twenty-four hours after treatments, it was evaluated the impact of ethanol exposure and Rosewood oil treatment on the putative emotional impairments assessed on the splash and forced swimming tests, as well as the levels of brain-derived neurotrophic factor (BDNF), S100B, oxidative parameters, and inflammatory cytokines in prefrontal cortex and hippocampus. Results indicated that Rosewood oil intranasal administration mitigated emotional impairments induced by ethanol exposure accompanied by a marked increase in BDNF, S100B, glutathione (GSH), and antioxidant activity equivalent to Trolox (TEAC) levels in brain areas. Rosewood oil treatment also prevented the ethanol-induced increase of interleukin-1ß, interleukin-6, tumor necrosis factor α (TNF-α), and neurofilament light chain (NFL) levels. These findings provide the first evidence that Rosewood oil intranasal administration exerts protective effects against emotional and molecular impairments associated with adolescent ethanol binge-like exposure, possibly due to linalool actions triggering neurotrophic factors, rebalancing antioxidant status, and attenuating proinflammatory process.

Physical activity moderates the association between school start time and sleep duration in a cross-sectional national sample of adolescents.

Background: Adolescent insufficient sleep is an endemic issue that may result in compromised functioning throughout the course of the day and is associated with increased risk for a variety of adverse outcomes. Early school start time (SST) has been consistently found to be detrimental to adolescents' sleep achievement on school nights. However, there are logistical barriers to changing SST. Evidence supports daily engagement in moderate-to-vigorous intensity physical activity (MVPA) to enhance adolescents' nightly sleep achievement. However, the role of MVPA in the association between SST and sleep duration is unknown. This study examines the potential moderating effect of MVPA in the association between SST and sleep duration on a typical school day among adolescents. Methods: This study examined data (collected in April and October 2014) from a national sample of 1132 adolescents (m age = 14.5 years) living in the United States from the Family Life, Activity, Sun, Health, and Eating study, a cross-sectional, internet-based survey. First, three linear regressions were computed to examine bivariate associations between SST, MVPA, and sleep duration while controlling for participant sex, race and ethnicity, household income, school level, and the presence of a TV in the bedroom. Next, a three-step multiple regression was computed with sleep duration as the dependent variable, and the final step included an interaction term between SST and MVPA. Results: Later SST (b 1 = 0.41, p < 0.001) and increased MVPA (b 1 = 0.39, p < 0.001) were both associated with increased sleep duration, while SST and MVPA were not significantly associated. In the final multiple regression model, which included the interaction term, school day MVPA moderated the positive association between SST and school night sleep duration (b 1 = - 3.7, p < 0.05), such that the greater the MVPA on a typical school day, the weaker the positive association between early SST and sleep duration. In post-hoc analysis, the interaction effect was only significant for females and not males. Conclusions: The significant buffering effect of MVPA on the association between SST and sleep duration suggests that in the absence of SST changes, promoting MVPA among adolescents may be a promising strategy to mitigate insufficient sleep among US adolescents.

Water safe Worcester: student-led drowning prevention in an adolescent underserved population.

Adolescents aged 15 to 19 years have the second highest fatal drowning rate of any age group, second only to toddlers aged 12 to 36 months. This risk is amplified in black, indigenous, and people of color (BIPOC), and those of low socioeconomic status. Worcester, MA is a diverse city with over 40% of residents identifying as BIPOC and 20% living below the poverty line. The city has multiple natural bodies of water available for recreation, putting Worcester residents, particularly adolescents, at high risk of drowning. It is known that swimming lessons provided to adolescents significantly improve their swimming skills, however many programs are tailored to young children and are not appropriate for adolescents. Students from the University of Massachusetts T.H. Chan Medical School (UMass Chan), in collaboration with community partners, developed a water safety and swim education program tailored to Worcester adolescents as a means for an age-appropriate swim experience and education, community engagement, and injury prevention. Water Safe Worcester (WSW) was established as a city-wide injury prevention program that included swim lessons offered by medical students at the Central Community Branch YMCA in Worcester, MA. Instructors included UMass Chan medical students, graduate students, and staff. Adolescent YMCA members were invited to participate in lessons free of charge. Lessons were 90 min and emphasized a 3-fold approach: (1) expand knowledge of water safety and what to do in an emergency, (2) increase swimming skills, and (3) reduce fear of water. The overall attendance for the 2023 spring and summer sessions offered was 73 students, including multiple swimmers who attended more than one session. A total of 12 volunteers participated, which included 9 first-year medical students, one PhD student, one research assistant, and one surgery resident from UMass Chan. WSW demonstrated promising outcomes during its swim education classes, suggesting that WSW is a successful model to promote water safety, reduce the risk of drowning, and expand access to life-saving skills to Worcester's at-risk adolescents. This program serves as a critical step toward health equity while also providing an avenue for public health and injury prevention exposure for medical students.

Sex-Moderated Divergence between Adult Child and Parental Dietary Behavior Patterns in Relation to Body Mass Condition-Evaluating the Mediating Role of Physical Activity: A Cross-Sectional Study.

The main objective of this study was to explore the dietary behaviors of parents and their adult children, focusing on patterns, potential intrinsic and extrinsic predictors of body mass, and determinants of becoming overweight. Non-probability, cross-sectional sampling was used to select participants from a university student population. Young adults (19-21 years of age, n = 144) and their parents were examined. The data of those family pairs with complete sets of results were used. Dietary patterns and physical activity were assessed with questionnaires (QEB and IPAQ), and body height, weight measurements, and body mass indexes were calculated. A cophylogenetic approach with tanglegrams and heatmaps was used to study patterns, while predictors of body mass index were identified using multiple linear regression, stepwise logistic regression, and mediation analysis procedures. Cophenetic statistics confirmed significant incongruence between fathers and sons, confirmed by Baker's Gamma correlation (rBG = 0.23, p = 0.021), and mothers and daughters (rBG = 0.26, p = 0.030). The relationships between the dietary patterns of the fathers and daughters, as well as mothers and sons, were of medium strength (rBG = 0.33, p = 0.032, rBG = 0.43, p = 0.031; respectively). Most of the patterns were mixed. Fast food, fried meals, alcoholic drinks, energy drinks, and sweetened beverages were associated significantly with being overweight. Significant intrinsic predictors of excessive weight in young adults were sex (b = 2.31, p < 0.001), PA (b = -0.02, p < 0.001), and eating fermented milk and curd cheese (b = -0.55, p = 0.024), while extrinsic (parental) predictors included eating fast food and fried meals (b = -0.44, p = 0.049). Both physical activity and dietary behaviors independently determined the sons' overweight status (b = -1.25, p = 0.008; b = -0.04, p < 0.001; respectively); while only PA did in daughters (b = -0.04, p < 0.001). No mediating effects of physical activity were observed. Adult children and parental dietary patterns were divergent, reflecting the influence of multiple factors on a child's dietary habits. However, this divergence is moderated by sex. Reciprocal interactions between dietary intake-particularly positive dyads such as fruits and vegetables, fermented milk, and curd cheese-and physical activity significantly impacted children's body mass index (BMI). The study of dietary patterns in conjunction with physical activity (both as independent determinants), particularly in relation to the link between overweight/obese children and overweight/obese parents, presents a separate challenge.

Association between composite dietary antioxidant and bone mineral density in children and adolescents aged 8-19 years: findings from NHANES.

Dietary antioxidants may have beneficial effects on bone health, but it remains uncertain in children and adolescents. This study investigates the association of composite dietary antioxidant index (CDAI) with bone mineral density (BMD) in children and adolescents aged 8-19 years from the National Health and Nutrition Examination Survey (NHANES) 2007-2010. The study assessed the relationship between CDAI and BMD in 2994 individuals aged 8-19 years (average age 13.48 ± 3.32 years) from the NHANES 2007-2010. Multivariate linear regression analyses were utilized to detect the association between CDAI and total spine, femur neck, and total femur BMD, adjusting for confounders including age, race/ethnicity, sex, poverty income ratio (PIR), body mass index (BMI), serum phosphorus and calcium. Stratified analyses and interaction tests were performed to examine the stability of the results. The weighted characteristics showed that subjects in the fourth CDAI quartile were more likely to be older, men, and Non-Hispanic White. They have higher values of serum total calcium and phosphorus. After adjusting all confounders, CDAI was positively associated with the total spine (ß = 0.0031 95% CI 0.0021-0.0040), total femur (ß = 0.0039 95% CI 0.0028-0.0049), and femur neck BMD (ß = 0.0031 95% CI 0.0021-0.0040) in children and adolescents. Furthermore, we found no interaction effects between different race/ethnicity, age, and sex groups. Our findings suggest that dietary intake of multiple antioxidants was positively associated with BMD in children and adolescents. These findings provide valuable evidence for improving bone health in the early stages of life. However, more prospective studies are required to validate our findings and their causal relationship.