An Improved Phenotyping Method for Evaluation of Yam (Dioscorea spp.) Resistance to Nematodes Belonging to the Genera Meloidogyne and Scutellonema.

Phenotyping yam (Dioscorea spp.) germplasm for resistance to parasitic nematodes is hampered by the lack of an efficient screening method. In this study, we developed a new method using rooted yam vine cuttings and yam plantlets generated from semi-autotrophic hydroponics (SAHs) propagation for phenotyping yam genotypes for nematode resistance. The method was evaluated using 26 genotypes of D. rotundata for their reaction to Scutellonema bradys and four root-knot nematode species, Meloidogyne arenaria, M. enterolobii, M. incognita, and M. javanica. Yam plantlets established in nursery bags filled with steam-sterilized soil were used for screening against single nematode species. Plants were inoculated four weeks after planting and assessed for nematode damage eight weeks later. A severity rating scale was used to classify genotypes as resistant, tolerant, or susceptible determine based on the nematode feeding damage on tubers and the rate of nematode multiplication in the roots of inoculated plants. The results demonstrated putative resistance and tolerance against S. bradys in 58% of the genotypes and 88%, 65%, 65%, and 58% against M. arenaria, M. javanica, M. incognita, and M. enterolobii, respectively. The method is rapid, flexible, and seasonally independent, permitting year-round screening under controlled conditions. This method increases the throughput and speed of phenotyping and improves the selection process.

Assessment of elemental chemistry, spatial distribution, and potential risks of road-deposited dusts in Sharjah, United Arab Emirates.

Road dust is a major source of pollution in the environment, carrying different pollutants, including heavy metals and metalloids, from one location to another. This study assesses the concentrations of eight heavy metals and one metalloid (Zn, Pb, Mn, Fe, Cr, Cu, Cd, Ni, and As) in dust samples collected from sixty-eight streets of Sharjah, United Arab Emirates using ICP-OES, as well as investigates their effects on both the environment and humans. Mean concentrations of the elements in µg/g across the sites were 392 ± 46 (Zn), 68.28 ± 11.3 (Pb), 1437 ± 67 (Mn), 39,481 ± 4611 (Fe), 460 ± 31 (Cr), 150 ± 44 (Cu), 1.25 ± 0.65 (Cd), 856 ± 72 (Ni), and 0.97 ± 0.28 (As). The Cdeg and ERI calculated from the study were 54.79 and 573, respectively, suggesting varying pollution levels. The highest contributions were from Ni, Cd, Zn, Cu, Cr, and Pb, especially in areas with heavy traffic. The non-carcinogenic risk assessments were generally low for the three routes of exposure, except HQoral that was slightly higher for children. Similarly, none of the elements exhibited any carcinogenic risk except chromium. Overall, the cancer risk is considered low. In view of the limited studies from UAE in relation to the metal content of road-deposited dusts, the current study serves as novel knowledge, especially in the context of geographical areas with a higher occurrence of sandstorms and the presence of particulate matter. The study also adds to the global understanding of the contribution of street dust to environmental pollution and its implications for human health.

The skin-brain connection and pleasant touch as supportive care for psychocutaneous disorders.

Psychodermatology is a subdiscipline of dermatology at the intersection of dermatology, psychiatry, and psychology. In dermatology clinical practice, patients may present with skin disease that affects their mental health, or skin disorders induced or worsened by psychological/psychiatric problems so there is a need for specialised education of dermatologists, as well as multidisciplinary teams, to achieve better management of these patients. Understanding the interaction between the central nervous system and the skin underlying psychocutaneous disorders could help identify alternative therapies that may improve patient well-being. The concept of pleasurable touch has received increasing attention following the discovery of C-tactile (CT) fibres. While afferent C-fibre stimulation is usually associated with pain, temperature, or itch, CT-fibres are stimulated optimally by a stimulus not in the nociceptor range but by a gentle, low-force stroking. As this affective touch may counteract unpleasurable sensations, such as pain and itch, and elicit positive feelings, the potential benefits of gentle touch and massage are interesting for dermatological, especially psychocutaneous, disorders. Here we provide an overview of the skin-brain connection to help understand the benefits of touch and massage, as illustrated with studies on atopic dermatitis and burns, as an adjunct to dermatological treatment for improving patient well-being and optimising treatment outcomes.

Socioeconomic disparities based on shooting intent in pediatric firearm injury.

BACKGROUND: Pediatric firearm injury is often associated with socioeconomically disadvantaged neighborhoods. Most studies only include fatal injuries and do not differentiate by shooting intent. We hypothesized that differences in neighborhood socioeconomic disadvantage would be observed among shooting intents of fatal and nonfatal cases. METHODS: A linked integrated database of pediatric fatal and nonfatal firearm injuries was developed from trauma center and medical examiner records in Harris County, Texas (2018-2020). Geospatial analysis was utilized to map victim residence locations, stratified by shooting intent. Area Deprivation Index (ADI), a composite measure of neighborhood socioeconomic disadvantage at the census tract level was linked to shooting intent. Differences in high ADI (more deprived) versus low ADI among the shooting intents were assessed. Unadjusted and adjusted regression models assessed differences in ADI scores across shooting intent, adjusted models controlled for age, gender, and race/ethnicity. RESULTS: Of 324 pediatric firearm injuries, 28% were fatal; 77% were classified as interpersonal violence, 15% unintentional, and 8% self-harm. Differences were noted among shooting intent across the ADI quartiles; with increases in ADI score, the odds of interpersonal violence injuries compared to self-harm injuries significantly increased by 5%; however, when adjusting for individual-level variables of age, gender, and race and ethnicity, no significant differences in ADI were noted. CONCLUSIONS: Our results suggest that children living in disadvantaged neighborhoods are more likely to be affected by interpersonal firearm violence compared to self-harm; however, when differences in race/ethnicity are considered, the differences attributable to neighborhood-level disadvantage disappeared. Resources should be dedicated to improving structural aspects of neighborhood disadvantage, which disproportionately impact racial/ethnic minoritized populations. Furthermore, firearm self-harm injuries occurred among children living in the less disadvantaged neighborhoods. Understanding the associations among individual and neighborhood-level factors are important for developing streamlined injury prevention interventions by shooting intent. LEVEL OF EVIDENCE: Level IVStudy TypePrognostic/Epidemiological.

Global environmental and toxicological impacts of polybrominated diphenyl ethers versus organophosphate esters: A comparative analysis and regrettable substitution dilemma.

The prevalence of organophosphate esters (OPEs) in the global environment is increasing, which aligns with the decline in the usage of polybrominated diphenyl ethers (PBDEs). PBDEs, a category of flame retardants, were banned and classified as persistent organic pollutants (POPs) through the Stockholm Convention due to their toxic and persistent properties. Despite a lack of comprehensive understanding of their ecological and health consequences, OPEs were adopted as replacements for PBDEs. This research aims to offer a comparative assessment of PBDEs and OPEs in various domains, specifically focusing on their persistence, bioaccumulation, and toxicity (PBT) properties. This study explored physicochemical properties (such as molecular weight, octanol-water partition coefficient, octanol-air partition coefficient, Henry's law constant, and vapor pressures), environmental behaviors, global concentrations in environmental matrices (air, water, and soil), toxicities, bioaccumulation, and trophic transfer mechanisms of both groups of compounds. Based on the comparison and analysis of environmental and toxicological data, we evaluate whether OPEs represent another instance of regrettable substitution and global contamination as much as PBDEs. Our findings indicate that the physical and chemical characteristics, environmental behaviors, and global concentrations of PBDEs and OPEs, are similar and overlap in many instances. Notably, OPE concentrations have even surged by orders of several magnitude compared to PBDEs in certain pristine regions like the Arctic and Antarctic, implying long-range transport. In many instances, air and water concentrations of OPEs have been increased than PBDEs. While the bioaccumulation factors (BAFs) of PBDEs (ranging from 4.8 to 7.5) are slightly elevated compared to OPEs (-0.5 to 5.36) in aquatic environments, both groups of compounds exhibit BAF values beyond the threshold of 5000 L/kg (log10 BAF > 3.7). Similarly, the trophic magnification factors (TMFs) for PBDEs (ranging from 0.39 to 4.44) slightly surpass those for OPEs (ranging from 1.06 to 3.5) in all cases. Metabolic biotransformation rates (LogKM) and hydrophobicity are potentially major factors deciding their trophic magnification potential. However, many compounds of PBDEs and OPEs show TMF values higher than 1, indicating biomagnification potential. Collectively, all data suggest that PBDEs and OPEs have the potential to bioaccumulate and transfer through the food chain. OPEs and PBDEs present a myriad of toxicity endpoints, with notable overlaps encompassing reproductive issues, oxidative stress, developmental defects, liver dysfunction, DNA damage, neurological toxicity, reproductive anomalies, carcinogenic effects, and behavior changes. Based on our investigation and comparative analysis, we conclude that substituting PBDEs with OPEs is regrettable based on PBT properties, underscoring the urgency for policy reforms and effective management strategies. Addressing this predicament before an exacerbation of global contamination is imperative.

Geographic Variation in Late-Stage Cervical Cancer Diagnosis.

Importance: There are stark disparities in cervical cancer burden in the United States, notably by race and ethnicity and geography. Late-stage diagnosis is an indicator of inadequate access to and utilization of screening. Objective: To identify geospatial clusters of late-stage cervical cancer at time of diagnosis in Texas. Design, Setting, and Participants: This population-based cross-sectional study used incident cervical cancer data from the Texas Cancer Registry from 2014 to 2018 of female patients aged 18 years or older. Late-stage cervical cancer cases were geocoded at the census tract level (n = 5265) using their residential coordinates (latitude and longitude) at the time of diagnosis. Statistical analysis was performed from April to September 2023. Exposures: Census tract of residence at diagnosis. Main Outcome and Measures: Late-stage cervical cancer diagnosis (ie, cases classified by the National Cancer Institute Surveillance, Epidemiology and End Results summary stages 2 to 4 [regional spread] or 7 [distant metastasis]). A Poisson probability-based model of the SaTScan purely spatial scan statistics was applied at the census tract-level to identify geographic clusters of higher (hot spots) or lower (cold spots) proportions than expected of late-stage cervical cancer diagnosis and adjusted for age. Results: Among a total of 6484 female patients with incident cervical cancer cases (mean [SD] age, 48.7 [14.7] years), 2300 (35.5%) were Hispanic, 798 (12.3%) were non-Hispanic Black, 3090 (47.6%) were non-Hispanic White, and 296 (4.6%) were other race or ethnicity. Of the 6484 patients, 2892 with late-stage diagnosis (mean [SD] age, 51.8 [14.4] years were analyzed. Among patients with late-stage diagnosis, 1069 (37.0%) were Hispanic, 417 (14.4%) were non-Hispanic Black, 1307 (45.2%) were non-Hispanic White, and 99 (3.4%) were other race or ethnicity. SaTScan spatial analysis identified 7 statistically significant clusters of late-stage cervical cancer diagnosis in Texas, of which 4 were hot spots and 3 were cold spots. Hot spots included 1128 census tracts, predominantly in the South Texas Plains, Gulf Coast, and Prairies and Lakes (North Texas) regions. Of the 2892 patients with late-stage cervical cancer, 880 (30.4%) were observed within hot spots. Census tract-level comparison of characteristics of clusters suggested that hot spots differed significantly from cold spots and the rest of Texas by proportions of racial and ethnic groups, non-US born persons, and socioeconomic status. Conclusions and Relevance: In this cross-sectional study examining geospatial clusters of late-stage cervical cancer diagnosis, place-based disparities were found in late-stage cervical cancer diagnosis in Texas. These findings suggest that these communities may benefit from aggressive cervical cancer interventions.

Trends in Up-To-Date Colorectal Cancer Screening Among U.S. Adults Aged 50-75 Years and Variations by Race/Ethnicity and U.S. Census Bureau Divisions.

Introduction: Mortality rates from colorectal cancer have declined over the past decades owing to population-based life-saving screening interventions. However, screening inequalities continue among racial and ethnic minorities despite having a higher disease burden. In this study, we assessed the patterns of up-to-date colorectal cancer screening rates among racial/ethnic groups across the U.S. Census Bureau Divisions. Methods: This population-based cross-sectional study used weighted data from 4 cycles of the Behavioral Risk Factors Surveillance System (2014, 2016, 2018, and 2020) of adults aged 50‒75 years without a previous diagnosis of colorectal cancer. The primary outcome was guideline-recommended up-to-date colorectal cancer screening. We used logistic regression models to examine temporal trends in up-to-date colorectal cancer screening from 2014 to 2020. In addition, we conducted detailed descriptive statistics of up-to-date screening rates, comparing trends in 2020 with those in 2014 overall by race/ethnicity and U.S. census divisions. Results: The overall proportion of individuals with up-to-date colorectal cancer screening increased from 66.5% in 2014 to 72.5% in 2020 (p<0.001). For racial/ethnic subgroups, from 2014 to 2020, screening rates increased significantly among non-Hispanic Whites (68.5%‒74.5%, p<0.001), non-Hispanic Blacks (68.0%‒74.6%, p<0.001), and Hispanics (51.5%‒62.8%, p<0.001). However, increases were not observed in all U.S. Census Bureau Divisions. Conclusions: Although colorectal cancer screening rates improved over time, they fall short of the 80% target. Substantial racial/ethnic and geographic disparities remain. Future studies investigating the factors influencing these disparities are needed.

The Prevalence of Musculoskeletal Symptoms among Welders and Non-Welders in Ikenne, Ogun State, Nigeria: A Comparative Cross-Sectional Study.

BACKGROUND: Musculoskeletal symptoms in welders may affect their health and quality of life. This study determined the prevalence of musculoskeletal symptoms among welders compared to non-welders and determined the body part(s) mostly affected. METHODOLOGY: The study is a comparative cross-sectional study. 142 welders and 136 security officers in Ikenne local government area of Ogun State, Nigeria were included in the study. The Nordic Musculoskeletal Questionnaire (NMQ) was used to obtain information on the prevalence of musculoskeletal disorders (MSDs). Descriptive statistics methods were used to summarize the data. Chi-square bivariate analysis was conducted to test for associations between welders' occupational characteristics and the 12-month prevalence of back pain. RESULTS: The mean age of respondents was 36.8±13.9 years and 36.7±9.4 for non-welders. Two-fifth (40.8%) of the welders had less than 10 years of work experience. About half (50.7%) of them worked six days a week, and many (54.9%) worked more than eight hours daily. The prevalence of back pain was higher among welders (74.6%) than in security officers (33.8%). This finding was significant (P<0.001). Also, knee pain was more common among welders (31.7%) compared to security officers (16.2%). The 12-month prevalence of back pain among welders and control was 74.6% and 33.8% respectively and knee pain among welders and control was 31.7% and 16.2% respectively. Both were statistically significant (p=0.001). In the last seven days, back pain was present more among welders than in controls (50.0% Vs 26.5%). CONCLUSION: The study shows a high prevalence of musculoskeletal symptoms among welders compared to non-welders. The lower back is the part of the body most affected. Training and health education of the workers on the negative effect of musculoskeletal symptoms on the body, and the right posture to adopt at work would go a long way in reducing the occurrence of these symptoms.

CONTEXTE: Les symptômes musculo-squelettiques chez les soudeurs peuvent affecter leur santé et leur qualité de vie. Cette étude a déterminé la prévalence des symptômes musculo-squelettiques chez les soudeurs par rapport aux non-soudeurs et a déterminé la ou les parties du corps les plus touchées. MÉTHODOLOGIES: L'étude est une étude transversale comparative. 142 soudeurs et 136 agents de sécurité dans la zone de gouvernement local d'Ikenne de l'État d'Ogun, au Nigéria, ont été inclus dans l'étude. Le questionnaire nordique sur les troubles musculo-squelettiques (NMQ) a été utilisé pour obtenir de l'information sur la prévalence des troubles musculo-squelettiques (TMS). Des méthodes statistiques descriptives ont été utilisées pour résumer les données. Une analyse bivariée du chi carré a été effectuée pour vérifier les associations entre les caractéristiques professionnelles des soudeurs et la prévalence des maux de dos sur 12 mois. RÉSULTATS: L'âge moyen des répondants était de 36,8±13,9 ans et de 36,7±9,4 ans pour les non-soudeurs. Les deux cinquièmes (40,8 %) des soudeurs avaient moins de 10 ans d'expérience de travail. Environ la moitié (50,7 %) d'entre eux travaillaient six jours par semaine, et beaucoup (54,9 %) travaillaient plus de huit heures par jour. La prévalence des maux de dos était plus élevée chez les soudeurs (74,6 %) que chez les agents de sécurité (33,8 %). Ce résultat était significatif (P<0,001). De plus, la douleur au genou était plus fréquente chez les soudeurs (31,7 %) que chez les agents de sécurité (16,2 %).La prévalence à 12 mois des maux de dos chez les soudeurs et les témoins était de 74,6 % et 33,8 % respectivement, et la douleur au genou chez les soudeurs et le groupe témoin était de 31,7 % et 16,2 % respectivement. Les deux étaient statistiquement significatifs (p = 0,001). Au cours des sept derniers jours, les maux de dos étaient plus présents chez les soudeurs que chez les témoins (50,0 % contre 26,5 %). CONCLUSION: L'étude montre une prévalence élevée de symptômes musculo-squelettiques chez les soudeurs par rapport aux non-soudeurs. Le bas du dos est la partie du corps la plus touchée. La formation et l'éducation sanitaire des travailleurs sur l'effet négatif des symptômes musculo-squelettiques sur le corps, et la bonne posture à adopter au travail contribueraient grandement à réduire l'apparition de ces symptômes. Mots clés: Symptômes musculo-squelettiques, Soudeurs, Nigeria, Questionnaire nordique sur les troubles musculo-squelettiques.

Knowledge, Attitude and Practice of Shisha Smoking among Undergraduates in a Private Tertiary Institution in Nigeria: A Cross-Sectional Study.

BACKGROUND: Shisha smoking is a growing health concern in most countries and this habit of smoking tobacco is on the increase in Nigeria. It is on the rise among youths along with proliferation of clubs, bars and hotels all over the country. The increased use in Nigeria can be attributed to easy access to tobacco products. OBJECTIVE: To determine the prevalence of Shisha smoking and evaluate the knowledge, attitude and practice of Shisha smoking among university undergraduates at a private university in Nigeria. METHODS: In 2021, a cross-sectional online study was carried out among university students at Babcock University, Ilishan-Remo, Ogun State, Nigeria, using a self-administered questionnaire. RESULTS: Overall, a total of 446 students took part in the study (115 males, 321 females) with mean age of 19.7 ± 2.9. The prevalence of Shisha smoking amongst the study respondents was 4.6%. About 25.0% of those that smoked shisha stated that they have been trying to quit with none of them seeking professional help. The mean knowledge score was 6.1 ± 2.6. The knowledge of shisha was highest among females and year 6 students. A little over half of the study respondents did not know that Shisha smoking was associated with cancers (52.8%) or that Shisha contained tobacco (58.3%). On the average, the study participants had very good attitude towards Shisha smoking with an average attitude score of 3.4 ± 0.4. The best attitude score was seen in females and year 6 students. The difference was not statistically significant. (p>0.05). CONCLUSION: The habit of shisha smoking occurs among youths who may be unaware of the tobacco content and increasing evidences of possible health risks. The findings in this study may help in formulating policies which are geared towards combating this growing menace in our schools and the society at large.

CONTEXTE: La consommation de shisha est un problème de santé croissant dans la plupart des pays et cette habitude de fumer du tabac est en augmentation au Nigeria. Elle est en augmentation chez les jeunes, parallèlement à la prolifération des clubs, des bars et des hôtels dans tout le pays. L'augmentation de la consommation au Nigeria peut être attribuée à la facilité d'accès aux produits du tabac. OBJECTIF: Déterminer la prévalence de la consommation de shisha et évaluer les connaissances, l'attitude et la pratique de la consommation de shisha chez les étudiants de premier cycle d'une université privée au Nigeria. MÉTHODES: En 2021, une étude transversale en ligne a été menée auprès des étudiants de l'université Babcock, Ilishan-Remo, État d'Ogun, Nigeria, à l'aide d'un questionnaire auto-administré. RÉSULTATS: Au total, 446 étudiants ont participé à l'étude (115 hommes, 321 femmes) avec un âge moyen de 19,7±2,9. La prévalence de la consommation de shisha parmi les répondants à l'étude était de 4,6 %. Environ 25,0 % de ceux qui fumaient la shisha ont déclaré qu'ils essayaient d'arrêter, mais aucun d'entre eux n'a cherché d'aide professionnelle. Le score moyen des connaissances était de 6,1 ± 2,6. La connaissance de la shisha était la plus élevée chez les femmes et les élèves de 6e année. Un peu plus de la moitié des répondants à l'étude ne savaient pas que fumer la shisha était associé à des cancers (52,8 %) ou que la shisha contenait du tabac (58,3 %). En moyenne, les participants à l'étude avaient une très bonne attitude à l'égard de la Shisha, avec un score moyen de 3,4 ± 0,4. Le meilleur score d'attitude a été observé chez les femmes et les élèves de 6e année. La différence n'était pas statistiquement significative. (p>0.05). CONCLUSION: L'habitude de fumer la shisha est répandue chez les jeunes qui peuvent ne pas être conscients de la teneur en tabac et des preuves de plus en plus nombreuses des risques possibles pour la santé. Les résultats de cette étude peuvent aider à formuler des politiques visant à lutter contre cette menace croissante dans nos écoles et dans la société en général. Mots-clés: Shisha, pipe à eau, narguilé, connaissances, attitudes, pratiques, étudiants de premier cycle.

Geospatial Distribution of Obsessive-Compulsive Disorder Specialists: Understanding Access as a Function of Distance, Insurance Status, and Neighborhood Socioeconomic Status.

Obsessive-compulsive disorder is an impairing psychiatric condition affecting 1-2% of adults and youth. Cognitive-behavioral therapy with exposure and response prevention (CBT) is an efficacious intervention but requires specialty training and access is often limited. While certain factors are associated with treatment access, one key barrier that has not been explored is the geographic availability of OCD treatment providers. Using integrated geographically-referenced data, we examined the geographic distribution of OCD CBT specialty providers across the state of Texas, with particular attention to the relationship to neighborhood socioeconomic disadvantage, insurance status, and rural versus urban status. We found that specialist providers are almost exclusively located inside the highly urbanized parts of the state, primarily in more affluent areas, and often only accept self-pay. The characteristics of the areas located the furthest away from specialty OCD care include a high proportion of persons identifying as Hispanic; a high proportion of non-English speakers, households with income below poverty; households with no vehicles; and persons with no health insurance. Average household income decreased as distances from specialist providers increased. Broadly, findings confirm that OCD CBT specialty providers are clustered in large socially advantaged areas and that economic disadvantage remains a significant barrier to care. As inadequate or inappropriate treatment of OCD is likely to result in sustained and impairing symptoms, this is of great concern.

Variation in the morphology and effector profiles of Exserohilum turcicum isolates associated with the Northern Corn Leaf Blight of maize in Nigeria.

BACKGROUND: Maize production in lowland agro-ecologies in West and Central Africa is constrained by the fungus Exserohilum turcicum, causal agent of Northern Corn Leaf Blight (NCLB). Breeding for resistance to NCLB is considered the most effective management strategy. The strategy would be even more effective if there is adequate knowledge of the characteristics of E. turcicum in a target region. Maize leaves showing NCLB symptoms were collected during field surveys in three major maize growing areas in Nigeria: Ikenne, Ile-Ife, and Zaria during 2018/2019 and 2019/2020 growing seasons to characterize E. turcicum populations interacting with maize using morphological and molecular criteria. RESULTS: A total of 217 E. turcicum isolates were recovered. Most of the isolates (47%) were recovered from the Ikenne samples while the least were obtained from Zaria. All isolates were morphologically characterized. A subset of 124 isolates was analyzed for virulence effector profiles using three primers: SIX13-like, SIX5-like, and Ecp6. Inter- and intra-location variations among isolates was found in sporulation, growth patterns, and presence of the effectors. Candidate effector genes that condition pathogenicity and virulence in E. turcicum were found but not all isolates expressed the three effectors. CONCLUSION: Morphological and genetic variation among E. turcicum isolates was found within and across locations. The variability observed suggests that breeding for resistance to NCLB in Nigeria requires selection for quantitative resistance to sustain the breeding efforts.

The Effects of COVID-19 Lockdown on Social Connectedness and Psychological Distress in U.S. Adults with Chronic Diseases.

Lockdown measures enacted in 2020 to control the spread of COVID-19 led to increases in the prevalence of mental health problems. Due to their high-risk status, individuals with chronic diseases may be at increased risk and disproportionately adversely affected by the COVID-19 pandemic. The investigators examined associations between having a high-risk chronic condition, social connectedness, and general distress and COVID-19-specific distress among U.S. adults during the COVID-19 lockdown. Baseline measures of a longitudinal survey collected at the beginning of the pandemic (April to June 2020) were analyzed to identify factors associated with loss of social connectedness from pre- to post-lockdown. The associations between social connectedness and both general and COVID-19-specific psychological distress were adjusted for certain high-risk chronic illnesses and interaction effects. The sample available for analysis included 1354 subjects (262 high-risk chronic diseases and 1092 without chronic illness). Those reporting the loss of social connectedness were younger (median = 39 vs. 42) and more likely to be unemployed because of the pandemic (19.4% vs. 11.0%). Adjustment for interaction demonstrated a stronger negative association between social connectedness change and the psychosocial impact of COVID-19 for those with high-risk illness(es) (change in connectedness*chronic illness OR = 0.88, 95%CI: 0.79-0.98, p = 0.020). These findings inform our understanding of the distribution and intersection of responses to public health lockdown orders in the U.S. and build further evidence of the importance of social connectedness on psychological distress.

Feedback Culture among Nigerian Orthodontic Medical Educators.

Background: Feedback is central to a quality medical and dental education in promoting self-directed learning and enhance progressive sharpening of trainees' skills, which are applicable in orthodontics. Hence, orthodontic educators must be conversant with the subject of feedback. There is insufficient information concerning this at the moment. Aim and Objectives: To determine the prevalence, quality, and barriers to feedback culture among Nigerian orthodontic educators. Design of the Study: Cross sectional. Setting: Nigerian orthodontists in training institutions. Materials and Methods: A descriptive study involving orthodontic educators in Nigeria, was done using a 26-item structured questionnaire distributed face-to-face or through google forms. Simple descriptive data analysis was done to address the study objectives. Results: Twenty-five orthodontic educators participated. Sixteen (60%) alluded to existence of a formal feedback culture in their centers, and 10, that is, 40% of the educators were comfortable giving feedback by themselves. Over half, 13, that is, 52% of the educators gave feedback as the need arises, and a few educators (18, 72%) rated the quality of feedback given as "good." In contrast, 11, that is, 44% of the educators always sought feedback from trainees, and 8, that is, 32% among them never sought feedback from colleagues. Feedback execution was preferred at different times including after teaching (10, 40%), after assessment (3, 12%), during practical (7, 28%), and on observations relating to attitude and professionalism (7, 28%). Feedback was mainly verbal and based on reports/observations. Time constraint was the barrier identified by the majority (13, 52%) of the participants. Conclusion: The scope and quality of feedback practice among orthodontic educators in Nigeria were inadequate. Time constraint was the most common barrier to feedback alluded to by the participants. There is a need to improve on feedback culture in orthodontics training in Nigeria.

Clustering of Pediatric Brain Tumors in Texas, 2000-2017.

Risk factors for pediatric brain tumors are largely unknown. Identifying spatial clusters of these rare tumors on the basis of residential address may provide insights into childhood socio-environmental factors that increase susceptibility. From 2000-2017, the Texas Cancer Registry recorded 4305 primary brain tumors diagnosed among children (≤19 years old). We performed a spatial analysis in SaTScan to identify neighborhoods (census tracts) where the observed number of pediatric brain tumors was higher than expected. Within each census tract, the number of pediatric brain tumors was summed on the basis of residential address at diagnosis. The population estimate from the 2007-2011 American Community Survey of 0- to 19-year-olds was used as the at-risk population. p-values were calculated using Monte Carlo hypothesis testing. The age-standardized rate was 54.3 per 1,000,000. SaTScan identified twenty clusters, of which two were statistically significant (p < 0.05). Some of the clusters identified in Texas spatially implicated potential sources of environmental risk factors (e.g., proximity to petroleum production processes) to explore in future research. This work provides hypothesis-generating data for further investigations of spatially relevant risk factors of pediatric brain tumors in Texas.

Racial/Ethnic Disparities in Cervical Cancer Stage at Diagnosis: Mediating Effects of Neighborhood-level Socioeconomic Deprivation.

BACKGROUND: Mortality from cervical cancer has declined steadily in the United States over the past several decades due to widespread screening for precancerous and early-stage cervical cancer (ECC), which are significantly easier to treat compared with late-stage cervical cancer (LCC). Unequal screening access continues to cause significant racial/ethnic disparities in cervical cancer diagnosis stage. This study examined the underlying role of neighborhood-level socioeconomic disadvantage as a potential mediator of the association between race/ethnicity and cervical cancer diagnosis stage. METHODS: We analyzed Texas Cancer Registry data for cervical cancer cases diagnosed among women ages 18 or older from 2010 to 2018. We performed causal mediation analyses of the association between race/ethnicity and cervical cancer stage at diagnosis mediated by neighborhood-level socioeconomic disadvantage. RESULTS: Of the 9,192 women with cervical cancer, 4,720 (51.3%) had LCC at diagnosis. Compared with non-Hispanic white (NHW) women (106.13, standard deviation (SD) = 13.32), non-Hispanic Black (NHB; 111.46, SD = 9.55) and Hispanic (112.32, SD = 9.42) women had higher area deprivation index (ADI) and had greater odds of LCC diagnosis [total effects: adjusted odds ratios (AOR) = 1.29 (95% CI, 1.11-1.46) and AOR 1.14 (95% CI, 1.03-1.25), respectively]. Approximately 34.7% and 71.6% of the disparity in LCC diagnosis were attributable to higher neighborhood socioeconomic disadvantage among NHB and Hispanic women, respectively. CONCLUSIONS: LCC disparity varied by race/ethnicity and was partly attributable to neighborhood disadvantage. The disparity among Hispanic women due to neighborhood deprivation was twice as high among NHB women. IMPACT: Findings may be used to develop targeted race- and place-specific interventions to improve cancer care equity.

Psychosocial Factors Associated with Substance Use among Secondary School Students in Ilorin, Nigeria.

BACKGROUND: Adolescent substance use is a global concern. Identifying factors associated with it can help in preparing prevention programmes. OBJECTIVES: The objectives were to determine the sociodemographic factors associated with substance use and the prevalence of associated psychiatric morbidity among secondary school students in Ilorin. MATERIALS AND METHODS: Instruments used were a sociodemographic questionnaire, a modified WHO Students' Drug Use Survey Questionnaire, and the General Health Questionnaire-12 (GHQ-12) which was used to determine psychiatric morbidity, using a cut-off score of 3. RESULTS: Substance use was associated with older age groups, male gender, parental substance use and poor relationship with parents, and urban location of school. Reported religiosity did not confer protection against substance use. The overall prevalence of psychiatric morbidity was 22.1% (n= 442). Psychiatric morbidity was more common among users of opioids, organic solvents, cocaine and hallucinogens, with current opioid users having ten times the odds of psychiatric morbidity. CONCLUSION: Factors influencing adolescent substance use serve as a substrate for interventions. A good relationship with parents and teachers are protective factors, while parental substance use calls for holistic psychosocial support. The association of substance use with psychiatric morbidity highlights the need to incorporate behavioural treatment in substance use interventions.

CONTEXTE: La Consommation de Substances Psychoactives chez les Adolescents est une Préoccupation Mondiale. L'Identification des Facteurs qui y sont Associés Peut Aider à Préparer des Programmes de Prévention. OBJECTIFS: Déterminer les facteurs socio-démographiques associés à la consommation de substances psychoactives chez les élèves du secondaire à Ilorin. Déterminer la prévalence de la morbidité psychiatrique chez les étudiants et son association avec la consommation de substances. MATÉRIAUX ET MÉTHODES: Les instruments utilisés étaient un questionnaire sociodémographique, un questionnaire modifié de l'enquête de l'OMS sur la consommation de drogues par les étudiants, et le Questionnaire de santé générale-12 (GHQ-12) qui a été utilisé pour déterminer la morbidité psychiatrique, en utilisant un score seuil de 3. RÉSULTATS: La consommation de substances psychoactives était associée à des groupes d'âge plus élevés, au sexe masculin, à la consommation de substances psychoactives par les parents et à une mauvaise relation avec les parents, ainsi qu'à la localisation urbaine de l'école. La religiosité déclarée ne confère pas de protection contre la consommation de substances. La prévalence globale de la morbidité psychiatrique était de 22,1% (n= 442). La morbidité psychiatrique était plus fréquente chez les consommateurs d'opioïdes, de solvants organiques, de cocaïne et d'hallucinogènes, les consommateurs actuels d'opioïdes ayant dix fois plus de chances de souffrir de morbidité psychiatrique. CONCLUSION: Les facteurs qui influencent la consommation de substances psychoactives chez les adolescents servent de substrat aux interventions. Une bonne relation avec les parents et les enseignants sont des facteurs de protection, tandis que la consommation de substances par les parents nécessite un soutien psychosocial global. L'association entre la consommation de substances et la morbidité psychiatrique souligne la nécessité d'intégrer un traitement comportemental dans les interventions en matière de consommation de substances. Mots clés: Santé des adolescents, médecine des adolescents, services de santé mentale en milieu scolaire, consommation d'alcool avant l'âge légal, toxicomanie, oral, pédopsychiatrie. Traduit avec.

Area deprivation index and segregation on the risk of HIV: a U.S. Veteran case-control study.

Background: Preventing HIV infection remains a critically important tool in the continuing fight against HIV/AIDS. The primary aim is to evaluate the effect and interactions between a composite area-level social determinants of health measure and an area-level measure of residential segregation on the risk of HIV/AIDS in U.S. Veterans. Methods: Using the individual-level patient data from the U.S. Department of Veterans Affairs, we constructed a case-control study of veterans living with HIV/AIDS (VLWH) and age-, sex assigned at birth- and index date-matched controls. We geocoded patient's residential address to ascertain their neighborhood and linked their information to two measures of neighborhood-level disadvantage: area deprivation index (ADI) and isolation index (ISOL). We used logistic regression to estimate the odds ratio (OR) and 95% confidence interval (CI) for comparing VLWH with matched controls. We performed analyses for the entire U.S. and separately for each U.S. Census division. Findings: Overall, living in minority-segregated neighborhoods was associated with a higher risk of HIV (OR: 1.88 (95% CI: 1.79-1.97) while living in higher ADI neighborhoods was associated with a lower risk of HIV (OR: 0.88; 95% CI: 0.84-0.92). The association between living in a higher ADI neighborhood and HIV was inconsistent across divisions, while living in minority-segregated neighborhoods was consistently associated with increased risk across all divisions. In the interaction model, individuals from low ADI and high ISOL neighborhoods had a higher risk of HIV in three divisions: East South Central; West South Central, and Pacific. Interpretation: Our results suggest that residential segregation may prevent people in disadvantaged neighborhoods from protecting themselves from HIV independent from access to health care. There is the need to advance knowledge about the neighborhood-level social-structural factors that influence HIV vulnerability toward developing interventions needed to achieve the goal of ending the HIV epidemic. Funding: US National Cancer Institute.

Ethnic disparities in childhood leukemia survival by border residence: A Texas population-based analysis.

BACKGROUND: The US-Mexico border is a medically underserved region where survival disparities have been observed in adults diagnosed and treated for various malignancies. Studies examining survival disparities among children living in this region and diagnosed with cancer are lacking. The objective of this study was to evaluate the impact of border residence on survival among children with acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), and living near the Texas-Mexico border at the time of their diagnosis. The authors hypothesized that this group experiences inferior survival compared with patients with childhood leukemia living in nonborder areas. METHODS: The authors conducted a retrospective survival analysis leveraging data from the Texas Cancer Registry. The study included patients aged birth to 19 years who were diagnosed with ALL or AML between 1995 and 2017. Cox proportional hazards models were used to evaluate the factors associated with the risk of death. Overall survival estimates were calculated using Kaplan-Meier methods. RESULTS: During the study period, there were 6002 children diagnosed with ALL and 1279 diagnosed with AML. Inferior 5-year overall survival was observed among children with ALL living along the border region compared with those living in nonborder areas (77.5% vs. 85.8%). In adjusted models, children with ALL living along the border experienced a 30% increased hazard of death versus children living in nonborder areas. In contrast, for children with AML, survival estimates did not vary by border versus nonborder residence. CONCLUSIONS: Living along the border was associated with inferior survival among children with ALL, but not among children with AML. Additional studies are urgently needed to identify the factors driving these disparities to effectively design multilevel interventions and influence state and national cancer control programs.

A Multifaceted Review of Eurycoma longifolia Nutraceutical Bioactives: Production, Extraction, and Analysis in Drugs and Biofluids.

Eurycoma longifolia Jack (known as Tongkat Ali) is a popular traditional herbal medicine, native to southeast Asia, that is well-known for its aphrodisiac as well as several other effects. Mostly, the root extract of E. longifolia is used as a folk medicine for sexual dysfunction, aging, anxiety, exercise recovery, fever, increased energy, and osteoporosis. These health effects led to the inclusion of E. longifolia in dietary supplements, particularly for bodybuilding purposes. These effects are mediated by a myriad of bioactive compounds belonging to quassinoids, canthin-6-one alkaloids, tirucallane triterpenes, squalene derivatives, and bioactive steroids. Among these phytoconstituents, quassinoids account for a large portion of E. longifolia root phytochemicals. Of these ingredients, eurycomanone, the major quassinoid in E. longifolia extract, accounts to a large extent for its health effects. This review capitalizes on the novel trends toward the production of E. longifolia bioactives using biotechnology and extraction optimization for best yields and recovery. Alongside, novel extraction methods, i.e., green techniques, of E. longifolia bioactives are described. Further, an overview of the different analytical approaches for the quality control assessment of E. longifolia plant material and nutraceuticals is presented alongside studies in body fluids to determine its pharmacokinetics and efficacy level. Such a compilation of analytical methods will help ensure safety and efficacy of that major drug.

Neighborhood-Level Factors Contribute to Disparities in Hepatocellular Carcinoma Incidence in Texas.

BACKGROUND AND AIMS: Texas has the highest hepatocellular carcinoma (HCC) incidence rates in the continental United States, but these rates vary by race-ethnicity. We examined racial-ethnic disparities through a geospatial analysis of the social determinants of health. METHODS: Using data from the Texas Cancer Registry, we assembled 11,547 HCC cases diagnosed between 2011 and 2015 into Texas's census tracts geographic units. Twenty-nine neighborhood measures representing demographics and socioeconomic, and employment domains were retrieved from the U.S. Census Bureau. We performed a series of aspatial and spatially weighted regression models to identify neighborhood-level characteristics associated with HCC risk. RESULTS: We found positive associations between HCC and proportion of population in census tracts that are Black or African American, Hispanic, over 60 years of age, in the construction industry, and in the service occupation but an inverse association with the proportion of population employed in the agricultural industry. The magnitude of these associations varied across Texas census tracts. CONCLUSIONS: We found evidence that neighborhood-level factors are differentially associated with variations in HCC incidence across Texas. Our findings reinforce existing knowledge about HCC risk factors and expose others, including neighborhood-level employment status.