Same-day Discharge Following Vaginal Hysterectomy and Native-tissue Apical Repair for Uterovaginal Prolapse: A Prospective Cohort Study.

INTRODUCTION AND HYPOTHESIS: The safety and feasibility of same-day discharge (SDD) has been consistently reported across the benign and gynecologic oncology literature. However, outcomes of SDD in the urogynecology population are sparse. The objectives of this study were to describe the success of SDD following vaginal hysterectomy and native-tissue colpopexy, and to compare the incidence of postoperative adverse events in patients discharged same-day versus postoperative day 1 (POD1). Further objectives were to compare pain, quality of recovery (QoR), and satisfaction between the groups. METHODS: This was a single-center, prospective cohort study of patients with planned SDD. A standardized ERAS protocol was utilized. The QoR-40 questionnaire was administered at baseline, POD2, and the 6-week postoperative visit. Pain scores were captured similarly, and a satisfaction survey was administered at 6 weeks. The primary outcome was composite adverse events defined as any postoperative adverse event and/or health care utilization, excluding telephone calls, and urinary tract infection. RESULTS: A total of 101 patients were enrolled in the study; the primary outcome was available for 99. SDD was achieved for 76 patients (77.0%); 23 patients stayed overnight (23.2%). The overall incidence of composite adverse events was 20.2% (95% CI, 13.5-29.2), and was not different between the groups (26.1% vs 18.4%, p = 0.42). Additionally, there were no differences in the QoR-40 or pain scores on POD2 and at 6 weeks. Patient satisfaction was high and similar between the groups. CONCLUSIONS: Successful SDD was achieved in 77.0% of the patients. SDD following vaginal hysterectomy and native-tissue colpopexy appears to be safe, feasible, and associated with good QoR and a high degree of patient satisfaction.

Restrictive opioid prescribing after surgery for prolapse and incontinence: a randomized, noninferiority trial.

BACKGROUND: Opioids are routinely prescribed for postoperative pain control after gynecologic surgery with growing evidence showing that most prescribed opioids go unused. Restrictive opioid prescribing has been implemented in other surgical specialties to combat the risk for opioid misuse and diversion. The impact of this practice in the urogynecologic patient population is unknown. OBJECTIVE: This study aimed to determine if a restrictive opioid prescription protocol is noninferior to routine opioid prescribing in terms of patient satisfaction with pain control after minor and major surgeries for prolapse and incontinence. STUDY DESIGN: This was a single-center, randomized, noninferiority trial of opioid-naïve patients who underwent minor (eg, colporrhaphy or mid-urethral sling) or major (eg, vaginal or minimally invasive abdominal prolapse repair) urogynecologic surgery. Patients were excluded if they had contraindications to all multimodal analgesia and if they scored ≥30 on the Pain Catastrophizing Scale. Subjects were randomized on the day of surgery to the standard opioid prescription protocol (wherein patients routinely received an opioid prescription upon discharge [ie, 3-10 tablets of 5 mg oxycodone]) or to the restrictive protocol (no opioid prescription unless the patient requested one). All patients received multimodal pain medications. Participants and caregivers were not blinded. Subjects were asked to record their pain medication use and pain levels for 7 days. The primary outcome was satisfaction with pain control reported at the 6-week postoperative visit. We hypothesized that patient satisfaction with the restrictive protocol would be noninferior to those randomized to the standard protocol. The noninferiority margin was 15 percentage points. Pain level scores, opioid usage, opioid prescription refills, and healthcare use were secondary outcomes assessed for superiority. RESULTS: A total of 133 patients were randomized, and 127 (64 in the standard arm and 63 in the restrictive arm) completed the primary outcome evaluation and were included in the analysis. There were no statistically significant differences between the study groups, and this remained after adjusting for the surgery type. Major urogynecologic surgery was performed in 73.6% of the study population, and minor surgery was performed in 26.4% of the population. Same-day discharge occurred for 87.6% of all subjects. Patient satisfaction was 92.2% in the standard protocol arm and 92.1% in the restrictive protocol arm (difference, -0.1%; P=.004), which met the criterion for noninferiority. No opioid usage in the first 7 days after hospital discharge was reported by 48.4% of the patients in the standard protocol arm and by 70.8% in the restrictive protocol arm (P=.009). Opioid prescription refills occurred in 8.5% of patients with no difference between the study groups (9.4% in the standard arm vs 6.7% in the restrictive arm; P=.661). No difference was seen in the rate of telephone calls and urgent visits for pain control between the study arms. CONCLUSION: Among women who underwent minor and major surgery for prolapse and incontinence, patient satisfaction rates were noninferior after restrictive opioid prescribing when compared with routine opioid prescribing.

Fewer Children in Families Associated with Lower Odds of Early Childhood Caries: A Sample from Three Countries.

Childhood caries experience is influenced by family characteristics and oral health practices in the context of many social-commercial determinants. The aim of this study was to explore the relationship between families' number of children, oral health practices and child caries experience in a convenience sample of 1374 children aged 6 months through 6 years and their families from Ecuador, Nepal, and Vietnam. Data were collected by mother interviews and child dental exams. Multivariate logistic and Zero-Inflated-Poisson regression analyses assessed associations between number of children, oral health practices and decayed, missing or filled teeth (dmft). Families had a mean of 2.2 children (range 1-12); 72% of children had tooth decay, with mean dmft of 5.4. Adjusting for child age, sex, and urban/rural location, a greater number of children in the family was associated with significantly less likelihood of unhealthy bottle feeding practices, having a toothbrush/toothpaste and parent helping child brush, and being cavity-free; higher number of dmft, and greater likelihood of having a dental visit. Early childhood oral health promotion should include focus on oral hygiene and healthy feeding-particularly breastfeeding and healthy bottle feeding practices-as well as access to family planning services and support for childcare.

Cost-effectiveness of overactive bladder treatments from a US commercial and payer perspective.

Aim: The cost-effectiveness of treatment options (anticholinergics, ß3-adrenoceptor agonists, onabotulinumtoxinA, sacral nerve stimulation and percutaneous tibial stimulation [the latter two including new rechargeable neurostimulators]) for the management of overactive bladder (OAB) were compared with best supportive care (BSC) using a previously published Markov model. Materials & methods: Cost-effectiveness was evaluated over a 15-year time horizon, and sensitivity analyses were performed using 2- and 5-year horizons. Discontinuation rates, resource utilization, and costs were derived from published sources. Results: Using Medicare and commercial costs over a 15-year time period, onabotulinumtoxinA 100U had incremental cost-effectiveness ratios (ICERs) gained of $39,591/quality-adjusted life-year (QALY) and $42,255/QALY, respectively, versus BSC, which were the lowest ICERs of all assessed treatments. The sensitivity analyses at 2- and 5-year horizons also showed onabotulinumtoxinA to be the most cost-effective of all assessed treatments versus BSC. Conclusion: OnabotulinumtoxinA 100U is currently the most cost-effective treatment for OAB.

The Current State of Surgical Ergonomics.

OBJECTIVE: Work-related musculoskeletal disorders are widespread among surgeons, causing significant disability and career modification. Gender plays a role, as female surgeons have a two-fold greater risk for discomfort during certain operations due to generally smaller hand sizes and height as compared to male surgeons. There is a lack of appropriate surgical instrumentation geared toward smaller hand sizes. Maintaining a neutral position while operating, frequent changes in position, and increased awareness can contribute to decreasing the detrimental impact on surgeons' bodies from performing operations.

Stereotactic radiosurgery versus whole brain radiotherapy in patients with intracranial metastatic disease and small-cell lung cancer: a systematic review and meta-analysis.

BACKGROUND: Patients with small-cell lung cancer (SCLC) are at high risk for intracranial metastatic disease (IMD). Although stereotactic radiosurgery (SRS) has supplanted whole brain radiotherapy (WBRT) as first-line treatment for IMD in most solid cancers, WBRT remains first-line treatment for IMD in patients with SCLC. We aimed to evaluate the efficacy of SRS in comparison with WBRT and assess treatment outcomes following SRS. METHODS: In this systematic review and meta-analysis, we searched MEDLINE, Embase, CENTRAL, and grey literature sources for controlled trials and cohort studies published in English reporting on SRS for IMD treatment in patients with SCLC from inception to March 23, 2022. Studies were excluded that did not report on SRS for IMD secondary to SCLC. Summary data were extracted. The primary outcome was overall survival, presented as pooled hazard ratios (HR) through random-effects meta-analysis for studies comparing SRS with WBRT with or without SRS boost, and as medians for single-arm SRS studies. This study is registered with the Open Science Framework, DOI 10.17605/OSF.IO/8M4HC, and PROSPERO, CRD42021258197. FINDINGS: Of 3823 identified records, 31 were eligible for inclusion; seven were included in the meta-analysis. Overall survival following SRS was longer than following WBRT with or without SRS boost (HR 0·85; 95% CI 0·75-0·97; n=7 studies; n=18 130 patients), or WBRT alone (0·77; 0·72-0·83; n=7 studies; n=16 961 patients), but not WBRT plus SRS boost (1·17, 0·78-1·75; n=4 studies; n=1167 patients). Using single-arm studies, pooled median overall survival from SRS was 8·99 months (95% CI 7·86-10·16; n=14 studies; n=1682 patients). Between-study heterogeneity was considerable when pooled among all comparative studies (I2=71·9%). INTERPRETATION: These results suggest survival outcomes are equitable following treatment with SRS compared with WBRT in patients with SCLC and IMD. Future prospective studies should focus on tumour burden and differences in local and distant intracranial progression between WBRT-treated and SRS-treated patients with SCLC. FUNDING: None.

Racial and ethnic disparities in surgical care for endometriosis across the United States.

BACKGROUND: Despite an estimated 10% prevalence of endometriosis among reproductive-age women, surgical population-based data are limited. OBJECTIVE: We sought to investigate racial and ethnic disparities in surgical interventions and complications among patients undergoing endometriosis surgery across the United States. STUDY DESIGN: We performed a retrospective cohort study of American College of Surgeons National Surgical Quality Improvement Program data from 2010 to 2018 identifying International Classification of Diseases, Ninth/Tenth Revision codes for endometriosis We compared procedures, surgical routes (laparoscopy vs laparotomy), and 30-day postoperative complications by race and ethnicity. RESULTS: We identified 11,936 patients who underwent surgery for endometriosis (65% White, 8.2% Hispanic, 7.3% Black or African American, 6.2% Asian, 1.0% Native Hawaiian or Pacific Islander, 0.6% American Indian or Alaska Native, and 11.5% of unknown race). Perioperative complications occurred in 9.6% of cases. After adjusting for confounders, being Hispanic (adjusted odds ratio, 1.31; 95% confidence interval, 1.06-1.64), Black or African American (adjusted odds ratio, 1.71; confidence interval, 1.39-2.10), Native Hawaiian or Pacific Islander (adjusted odds ratio, 2.08; confidence interval, 1.28-3.37), or American Indian or Alaska Native (adjusted odds ratio, 2.34; confidence interval, 1.32-4.17) was associated with surgical complications. Hysterectomies among Hispanic (adjusted odds ratio, 1.68; confidence interval, 1.38-2.06), Black or African American (adjusted odds ratio, 1.77; confidence interval, 1.43-2.18), Asian (adjusted odds ratio, 1.87; confidence interval, 1.43-2.46), Native Hawaiian or Pacific Islander (adjusted odds ratio, 4.16; confidence interval, 2.14-8.10), and patients of unknown race or ethnicity (adjusted odds ratio, 2.07; confidence interval, 1.75-2.47) were more likely to be open. Being Hispanic (adjusted odds ratio, 1.64; confidence interval, 1.16-2.30) or Black or African American (adjusted odds ratio, 2.64; confidence interval, 1.95-3.58) was also associated with receipt of laparotomy for nonhysterectomy procedures. The likelihood of undergoing oophorectomy was increased for Hispanic and Black women (adjusted odds ratio, 2.57; confidence interval, 1.96-3.37 and adjusted odds ratio, 2.06; confidence interval, 1.51-2.80, respectively), especially at younger ages. CONCLUSION: Race and ethnicity were independently associated with surgical care for endometriosis, with elevated complication rates experienced by Hispanic, Black or African American, Native Hawaiian or Pacific Islander, and American Indian or Alaska Native patients.

Shared genomic architecture between COVID-19 severity and numerous clinical and physiologic parameters revealed by LD score regression analysis.

The COVID-19 pandemic has produced broad clinical manifestations, from asymptomatic infection to hospitalization and death. Despite progress from genomic and clinical epidemiology research, risk factors for developing severe COVID-19 are incompletely understood and identification of modifiable risk factors is desperately needed. We conducted linkage disequilibrium score regression (LDSR) analysis to estimate cross-trait genetic correlation between COVID-19 severity and various polygenic phenotypes. To attenuate the genetic contribution of smoking and BMI, we further conducted sensitivity analyses by pruning genomic regions associated with smoking/BMI and repeating LDSR analyses. We identified robust positive associations between the genetic architecture of severe COVID-19 and both BMI and smoking. We observed strong positive genetic correlation (rg) with diabetes (rg = 0.25) and shortness of breath walking on level ground (rg = 0.28) and novel protective associations with vitamin E (rg = - 0.53), calcium (rg = - 0.33), retinol (rg = - 0.59), Apolipoprotein A (rg = - 0.13), and HDL (rg = - 0.17), but no association with vitamin D (rg = - 0.02). Removing genomic regions associated with smoking and BMI generally attenuated the associations, but the associations with nutrient biomarkers persisted. This study provides a comprehensive assessment of the shared genetic architecture of COVID-19 severity and numerous clinical/physiologic parameters. Associations with blood and plasma-derived traits identified biomarkers for Mendelian randomization studies to explore causality and nominates therapeutic targets for clinical evaluation.

Clobetasol Compared With Fractionated Carbon Dioxide Laser for Lichen Sclerosus: A Randomized Controlled Trial.

OBJECTIVE: To compare 6-month safety and efficacy outcomes of fractionated CO2 laser (laser) with topical clobetasol propionate (steroid) for treatment of symptomatic vulvar lichen sclerosus. METHODS: We conducted a single-center randomized controlled trial that compared fractionated CO2 laser with steroid treatment for patients with biopsy-proven lichen sclerosus. Randomization was stratified by prior clobetasol propionate use. The primary outcome was mean change in Skindex-29 score at 6 months. A total sample size of 52 participants were recruited to detect a mean difference of 16 points on the Skindex-29 (SD±22) with 80% power, based on a one-sided two-sample t test with α=0.05, accounting for 10% attrition. Secondary outcomes included validated subjective and objective measures. Intention-to-treat, per protocol, and regression analysis based on prior steroid exposure were performed. RESULTS: From October 2015 to July 2018, 202 women were screened, 52 were randomized, and 51 completed a 6-month follow-up. No significant difference was found in baseline demographics, symptoms, and physician assessment scores. There was greater improvement in the Skindex-29 score in the laser arm at 6-months (10.9 point effect size, 95% CI 3.42-18.41; P=.007). Overall, 89% (23/27) of patients in the laser group rated symptoms as being "better or much better" compared with 62% (13/24) of patients in the steroid group, P=.07. More patients (81%, 21/27) were "satisfied or very satisfied" with laser treatment compared with steroid treatment (41%, 9/24); P=.01. After stratification for previous steroid use, the significant change of Skindex-29 score was only seen in the previously exposed group. There was one adverse event in each group: minor burning and blistering at the laser site and reactivation of genital herpes 1 week after starting steroid. CONCLUSION: Fractionated CO2 laser treatment showed significant improvement in subjective symptoms and objective measures compared with clobetasol propionate, without serious safety or adverse events at 6 months. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov, NCT02573883.

Physical Activity, Diet, and Incident Urinary Incontinence in Postmenopausal Women: Women's Health Initiative Observational Study.

BACKGROUND: Physical activity and macronutrient intake, important contributors to energy balance, may be independently associated with female urinary incontinence (UI). METHODS: We evaluated the association of baseline self-reported physical activity and macronutrient intake, via food frequency questionnaire, with incident UI subtypes after 3 years among 19 741 postmenopausal women in the Women's Health Initiative Observational Study. Odds ratios (ORs) for incident urgency, stress, and mixed UI were calculated using multivariable logistic regression. RESULTS: Women who reported total physical activity (metabolic equivalent task [MET]-hours/week) ≥30 versus <0.1 were 16% less likely to develop urgency UI (OR = 0.84; 95% CI 0.70, 1.00) and 34% less likely for mixed UI (OR = 0.66; 95% CI 0.46, 0.95), although linear trends were no longer statistically significant after adjusting for baseline weight and weight change (p trend = .15 and .16, respectively). The association between physical activity and incident stress UI was less consistent. Higher uncalibrated protein intake was associated with increased odds of incident urgency UI (≥19.4% vs <14.1% of energy intake OR = 1.14; 95% CI 0.99, 1.30; p trend = .02), while CIs were wide and included 1.0 for calibrated protein intake. Other macronutrients were not associated with urgency UI and macronutrient intake was not associated with incident stress or mixed UI (p trend > .05 for all). CONCLUSIONS: Among postmenopausal women, higher physical activity was associated with lower risk of incident urgency and mixed UI, but not stress UI, independent of baseline weight and weight change. Higher protein intake was associated with increased risk of urgency UI, but no associations were observed between other macronutrient and UI subtypes.

#UTOPia: Urogynecology Tag Ontology Project.

OBJECTIVE: The objective of this study was to review and analyze the current social media status of urogynecology/female pelvic medicine and reconstructive surgery on Twitter and create a tag ontology. METHODS: A "tag ontology" is a standardized list of hashtags used to organize specific subject matter within a social media platform. We used an online social media analytics tool, Symplur to identify tweets and hashtags related to #urogynecology between January 2018 and July 2020. Hashtags identified using Symplur were verified manually via Twitter inquiries and reviewed by urogynecology social medial influencers for external validation. The hashtags were selected based on frequency of use, social media influencer opinion, and clinical relevance. RESULTS: We identified 6,847 tweets and 2,946 users. Our ontology includes 67 terms categorized into 5 groups (urinary, prolapse, anus/rectum, vulva, and other). Using "Symplur Rank," the 2 top influencers included @FPMRS and @FPMRSJournal. CONCLUSIONS: Adaptation of a standardized hashtag ontology facilitates communication between providers and patients about pertinent health care issues. Our study has created a urogynecology-specific ontology based on 2018-2020 Twitter usage.

Association of Pelvic Organ Prolapse Quantification examination D point with uterosacral ligament suspension outcomes: the "OPTIMAL" D point.

INTRODUCTION AND HYPOTHESIS: The objective was to determine the relationship between the preoperative D-point and apical outcomes at 24 months, using the Operations and Pelvic Muscle Training in the Management of Apical Support Loss (OPTIMAL) dataset. METHODS: This was a secondary analysis of the OPTIMAL trial, a randomized multi-centered study comparing outcomes of sacrospinous ligament fixation and transvaginal uterosacral ligament suspension (USLS). The 2-year dataset utilized included women undergoing USLS with concomitant hysterectomy. The primary outcome was the relationship between preoperative D-point and apical outcomes at 24 months. Secondary objectives were to determine the relationship between preoperative D-point and anatomical, composite and subjective outcomes, and to determine a D-point cut-off that could be used to predict success in each of these categories. RESULTS: Of the 186 women in the USLS arm, 120 were available for analysis of anatomical failure at 24 months. A higher preoperative D-point correlated with improved apical outcome (C-point) at 24 months (r = 0.34; p value = 0.0002). Using ROC curves, a moderate association was found between the preoperative D-point and apical and anatomical success, (AUC 0.689 and 0.662). There was no relationship between preoperative D-point and composite or subjective success (AUC 0.577 and 0.458). Based on the ROC curves, a "cut-off" D-point value of -4.25 cm (sensitivity = 0.58, specificity = 0.67) was determined to be a predictor of postoperative anatomical success at 2 years. CONCLUSIONS: Preoperative D-point correlates with postoperative anatomical and apical support, but is less successful at predicting subjective outcomes. The strongest predictive D-point cut-off for anatomical and apical success at 24 months was -4.25 cm.

Exploring the Point-of-Sale Among Vape Shops Across the United States: Audits Integrating a Mystery Shopper Approach.

INTRODUCTION: Vape shops represent prominent, unique retailers, subject to Food and Drug Administration (FDA) regulation in the United States. AIMS AND METHODS: This study assessed compliance of US vape shop retail marketing strategies with new regulations (eg, required age verification, prohibited free samples) and pre-implementation conditions for other regulations (eg, health warning labels on all nicotine products, required disclosures of e-liquid contents). RESULTS: 95.0% of shops displayed minimum-age signage; however, mystery shoppers were asked for age verification at 35.6% upon entry and at 23.4% upon purchase. Although 85.5% of shops had some evidence of implementing FDA health warnings, 29.1% had signage indicating prohibited health claims, 16.3% offered free e-liquid samples, 27.4% had signage with cartoon imagery, and 33.3% were within two blocks of schools. All shops sold open-system devices, 64.8% sold closed-system devices, 68.2% sold their own brand of e-liquids, 42.5% sold e-liquids containing cannabidiol, 83.2% offered price promotions of some kind, and 89.9% had signage for product and price promotions. CONCLUSIONS: Results indicated that most shops complied with some implementation of FDA health warnings and with free sampling bans and minimum-age signage. Other findings indicated concerns related to underage access, health claims, promotional strategies, and cannabidiol product offerings, which call for further FDA and state regulatory/enforcement efforts.

Enhanced Recovery and Surgical Optimization Protocol for Minimally Invasive Gynecologic Surgery: An AAGL White Paper.

This is the first Enhanced Recovery After Surgery (ERAS) guideline dedicated to standardizing and optimizing perioperative care for women undergoing minimally invasive gynecologic surgery. The guideline was rigorously formulated by an American Association of Gynecologic Laparoscopists Task Force of US and Canadian gynecologic surgeons with special interest and experience in adapting ERAS practices for patients requiring minimally invasive gynecologic surgery. It builds on the 2016 ERAS Society recommendations for perioperative care in gynecologic/oncologic surgery by serving as a more comprehensive reference for minimally invasive endoscopic and vaginal surgery for both benign and malignant gynecologic conditions. For example, the section on preoperative optimization provides more specific recommendations derived from the ambulatory surgery and anesthesia literature for the management of anemia, hyperglycemia, and obstructive sleep apnea. Recommendations pertaining to multimodal analgesia account for the recent Food and Drug Administration warnings about respiratory depression from gabapentinoids. The guideline focuses on workflows important to high-value care in minimally invasive surgery, such as same-day discharge, and tackles controversial issues in minimally invasive surgery, such as thromboprophylaxis. In these ways, the guideline supports the American Association of Gynecologic Laparoscopists and our collective mission to elevate the quality and safety of healthcare for women through excellence in clinical practice.

Vape shop owners'/managers' attitudes about CBD, THC, and marijuana legal markets.

Over the past decade in the US there have been marked pivotal changes in the policy and retail environment regarding cannabinoids, particularly cannabidiol (CBD) and delta-9-tetrahydrocannabinol (THC). Many vape shops may carry products relevant to these two markets. This study interviewed vape shop owners/managers to assess their perceptions of consumer interests/behaviors regarding CBD and THC and of the impact of legalized marijuana retail on vape shops. The current study involved phone-based semi-structured interviews of 45 vape shop owners/managers in six metropolitan statistical areas (MSAs; Atlanta, Boston, Minneapolis, Oklahoma City, San Diego, and Seattle) during Summer 2018. Overall, 82.2% of participants were male, 77.8% were non-Hispanic White, 64.4% were managers, 8.9% reported past 30-day smoking, and 95.6% reported past 30-day vaping. Overall, 44.4% sold e-liquids containing CBD. Vape shop owners/managers indicated minimal perceived risk and some beliefs in therapeutic benefits of CBD products; however, there was a broader range of perspectives regarding marijuana retail and selling marijuana for recreational use. Some chose to distance themselves from marijuana products, their use, and the possibility of entering marijuana retail if it were to evolve in their state, while some indicated high levels of enthusiasm for the growing retail marijuana market. Future research should examine how vape shops and other retailers of CBD and marijuana communicate with consumers about products and modes of using such products, as well as how various industry sectors (e.g., vape shops) adapt or evolve with increasing regulation of nicotine and increasing legalization of marijuana retail.

Vape shop identification, density and place characteristics in six metropolitan areas across the US.

Vaping is increasingly prevalent and controversial. Vape shops and convenience stores are common but distinct sources of vaping products, and where they locate may reflect likely target markets. This study examined the density and neighborhood demographics of vape shops and convenience stores in six metropolitan statistical areas (MSAs): Atlanta, Boston, Minneapolis, Oklahoma City, San Diego, Seattle. We identified 459 vape shops using Yelp and Google application programming interfaces and 10,777 convenience stores using ReferenceUSA and Dun & Bradstreet. Retailers were geocoded to census tracts (n = 4,442), and logistic regressions were conducted using as predictors percent non-White, percent youth (5-17 years or 5-20 years), and median household income from the American Community Survey, 2013-2017. Per 10,000 young adults, vape shop density ranged from 0.6 (Boston, San Diego) to 1.7 (Oklahoma City), and convenience store density ranged from 12.6 (San Diego) to 26.3 (Oklahoma City). Logistic regressions indicated that vape shops more likely resided in tracts with lower percentages of youth in Boston, but higher percentages of youth in Atlanta, as well as with lower incomes in Boston and Seattle. Convenience stores more likely resided in tracts with lower percentages of non-Whites in Atlanta and Boston; lower incomes in Atlanta, Boston, San Diego, and Seattle; and higher percentages of youth in Atlanta, Boston, and Minneapolis. These common retail sources of vaping products differentially locate in relation to neighborhood sociodemographics across MSAs. Findings suggest that, in some MSAs, vape shops and convenience stores may target youth and lower income populations.

Initial use of tobacco or marijuana and later use profiles in young adults.

INTRODUCTION: Given the relatively limited literature regarding risk factors for progression of alternative tobacco and marijuana use, this study examined initially-used tobacco or marijuana products and psychosocial risk factors such as adverse childhood events (ACEs), mental health (depression, ADHD), and parental substance use, in relation to young adult lifetime and current (past 30-day) tobacco and marijuana use. METHODS: Using cross-sectional data from a 2014-2016 study of 3418 young adult college students in Georgia, we analyzed lifetime and current use of various tobacco products (cigarettes, cigar products, smokeless tobacco, e-cigarettes, hookah) and marijuana among lifetime tobacco or marijuana users (N=1451) in relation to initially-used product as well as sociodemographic characteristics and psychosocial risk factors. RESULTS: Multivariable analyses indicated that more products ever used correlated with cigarettes being first used (vs cigars, B=-0.66; e-cigarettes, OR=-1.33; hookah, B=-0.99; and marijuana, B=-1.05; p<0.001), as well as being older (B=0.06), male (B=-0.72) and White (vs Black, B=-0.30; or Asian, B=-0.60), more adverse childhood events (ACEs, B=0.07), and parental marijuana use (B=0.47; p<0.05). Currently-used products correlated with cigarettes being first used (vs cigars, B=-0.18; e-cigarettes, B=-0.37; and hookah, B=-0.18; p<0.05), being younger (B=-0.04), male (B=-0.15), more depressive symptoms (B=0.01), and parental marijuana use (B=0.40; p<0.05). Current cigarette, smokeless tobacco, hookah and marijuana use demonstrated specificity to initially-used products. CONCLUSIONS: Initially-used products, specifically cigarettes, with well-documented and communicated risks, correlated with using more products subsequently among young adults, underscoring needed research on such risks and risk communication, and early intervention strategies.

CD49b inhibits osteogenic differentiation and plays an important role in osteosarcoma progression.

Osteosarcoma is a cancer whose cell of origin lies in the differentiation pathway between the mesenchymal stem cell (MSC) and the osteoblast (OB). In this study, we sought to determine if surface markers associated with osteoblastic differentiation are involved in osteosarcoma progression. cDNA expression arrays were performed on MSCs and osteoblasts to identify differentially expressed genes. The specificity of candidate genes for osteoblast differentiation was assessed through time course experiments in differentiation media with confirmation utilizing CD49b transfected MSCs. In addition, CD49b was transfected into osteosarcoma cell lines to determine its impact on cell proliferation, motility, and invasion. Finally, the expression of CD49b was assessed in osteosarcoma patient samples and correlated with survival outcomes. cDNA expression arrays identified a list of genes differentially expressed between MSCs and osteoblasts with a subset of those genes encoding cell surface proteins. Three genes were selected for further analysis, based on qPCR validation, but only CD49b was selective for osteoblastic differentiation. Forced expression of CD49b in MSCs led to delayed osteoblastic differentiation. Down-regulation of CD49b expression in osteosarcoma cell lines resulted in inhibition of their migration and invasion capacity. CD49b expression in osteosarcoma patients was associated with presence of metastases and inferior 5 year overall survival (31.4% vs. 57.4%, p=0.03). Surface proteins involved in osteosarcoma cell differentiation, such as CD49b, have the potential to serve as prognostic biomarkers, and may lead to the identification of new therapeutic targets.