SARS-CoV-2 Inactivation on Hard Non-porous Airplane Cabin Material Surfaces was Limited After Exposure to Far UV-C (222 nm) Radiation.

AIMS: To test the efficacy of 222 nm Far UV-C for surface disinfection of SARS-CoV-2 on inanimate surfaces from airplane cabins. METHODS AND RESULTS: Two far ultraviolet (UV-C) irradiation light systems were evaluated for disinfection of SARS-CoV-2. Materials used for carriers (test surfaces) included polished stainless steel and used airplane materials including seatbelt latches, window dust covers, sidewall laminates, and tray tables. CONCLUSIONS: While demonstrating reasonable efficacy under some experimental conditions, the data indicated that 222 nm Far UV-C disinfection alone does not reliably provide a 3 log10 or 99.9% reduction of SARS-CoV-2 on inanimate surfaces from an airplane cabin. An Ushio (Cypress, CA) 1.7" x 2.3" Care222® 12W 222nm BI lamp module tested in triplicate at a low (⁓ 1.5 mJ cm-2), medium (⁓ 3.0 mJ cm-2), and high (⁓ 6 to 9 mJ cm-2) fluence did not provide a ≥ 3 log10 or 99.9% reduction of SARS-CoV-2. The reduction of SARS-CoV-2 was greatest on stainless steel. The result was a log10 reduction of 2.83, 1.33, 2.58, and 2.21 logs for virus samples containing saline, saline with 2.5 mg BSA, saline with 0.25 mg BSA, and artificial saliva respectively at a dosage of 5 to 9 mJ cm-2. The log10 reduction of SARS-CoV-2 in saline with 2.5 mg bovine serum albumin was lowest with 1.33 for stainless steel, 0.93 for belt latch, and 0.61 for tray table at a dosage of 5 to 6 mJ cm-2.The second UV lighting system tested was a prototype mobile wand with a built-in short-pass filtered krypton-chloride cylindrical lamp. One pass of the wand over a tray holding carriers inoculated with SARS-CoV-2 in artificial saliva at a rate of approximately 1 foot (1') per second (sec) exposed the carriers to 7.3 mJ cm-2. The log10 reductions determined for the single pass were 2.97, 3.75, 1.78, 1.91, and 1.28 logs for stainless steel, belt latch, dust cover, sidewall, and tray table respectively. Two passes of the wand generated 17.2 mJ cm-2 and resulted in log10 reductions of 4.04, 3.74, 4.24, 3.68, and 1.66 logs for stainless steel, belt latch, dust cover, sidewall, and tray table respectively. The combination of higher fluence from multiple passes of the wand, the close proximity (10 cm wand to the carrier), the exposure to elevated temperatures up to 35°C, and ozone from the bulb being blown directly onto the carriers contributed to effective viral inactivation on all surfaces except the airplane tray table. The impact of temperature and ozone on viral inactivation should be determined for future testing of the 222 nm UV-C wand.

Wastewater surveillance of SARS-CoV-2 in dormitories as a part of comprehensive university campus COVID-19 monitoring.

Wastewater-based epidemiology is an effective tool for monitoring infectious disease spread or illicit drug use within communities. At the Ohio State University, we conducted a SARS-CoV-2 wastewater surveillance program in the 2020-2021 academic year and compared results with the university-required weekly COVID-19 saliva testing to monitor COVID-19 infection prevalence in the on-campus residential communities. The objectives of the study were to rapidly track trends in the wastewater SARS-CoV-2 gene concentrations, analyze the relationship between case numbers and wastewater signals when adjusted using human fecal viral indicator concentrations (PMMoV, crAssphage) in wastewater, and investigate the relationship of the SARS-CoV-2 gene concentrations with wastewater parameters. SARS-CoV-2 nucleocapsid and envelope (N1, N2, and E) gene concentrations, determined with reverse transcription droplet digital PCR, were used to track SARS-CoV-2 viral loads in dormitory wastewater once a week at 6 sampling sites across the campus during the fall semester in 2020. During the following spring semester, research was focused on SARS-CoV2 N2 gene concentrations at 5 sites sampled twice a week. Spearman correlations both with and without adjusting using human fecal viral indicators showed a significant correlation (p < 0.05) between human COVID-19 positive case counts and wastewater SARS-CoV-2 gene concentrations. Spearman correlations showed significant relationships between N1 gene concentrations and both TSS and turbidity, and between E gene concentrations and both pH and turbidity. These results suggest that wastewater signal increases with the census of infected individuals, in which the majority are asymptomatic, with a statistically significant (p-value <0.05) temporal correlation. The study design can be utilized as a platform for rapid trend tracking of SARS-CoV-2 variants and other diseases circulating in various communities.

Quarantine preparedness - the missing factor in COVID-19 behaviour change? Qualitative insights from Australia.

BACKGROUND: A key feature of the global public health response to contain and slow the spread of COVID-19 has been community-based quarantine and self-isolation. As part of The Optimise Study, this research sought to understand the factors that influence people's ability to undertake home-based quarantine and isolation to contain the spread of COVID-19. METHODS: Semi-structured qualitative phone interviews (n = 25) were conducted by telephone with people who participated in community-based quarantine in Australia before 31 March 2020. The Capability Opportunity Motivation Behaviour model was used to conduct a thematic analysis. RESULTS: Participants required clear, accessible and trusted information to guide them in home-based quarantine and isolation. A sense of social responsibility and belief in the efficacy of the restrictions to reduce viral transmission aided their motivation. Access to essential needs, supportive living environments, and emotional support were required to adhere to restrictions, but few were prepared. CONCLUSIONS: Findings demonstrate that in addition to having the capability and motivation to adhere to restrictions, it is vital that people are also encouraged to prepare for the challenge to ensure access to physical, social and emotional support. Findings also illustrate the importance of engaging communities in planning and preparedness for quarantine and self-isolation public health responses.

Changes in respiratory symptoms during 48-week treatment with ARD-3150 (inhaled liposomal ciprofloxacin) in bronchiectasis: results from the ORBIT-3 and -4 studies.

It is not known if inhaled antibiotics improve respiratory symptoms in patients with bronchiectasis. In the recent phase-3 ORBIT trials, 48 weeks' treatment with ARD-3150 (inhaled liposomal ciprofloxacin) did not significantly improve symptoms using the prespecified method of analysis comparing baseline symptoms to those after 48 weeks, when patients had been off treatment for 28 days. This method of analysis does not take account of possible improvements in symptoms while on active treatment.A post hoc analysis of two identical randomised trials of ARD-3150 (ORBIT-3 and -4) administered 28 days on and 28 days off in patients with bronchiectasis and chronic Pseudomonas aeruginosa infection. The quality-of-life bronchiectasis respiratory symptom scale (QOL-B-RSS), which has a one-week recall period, was administered every 28 days. We examined whether respiratory symptoms improved during on-treatment periods and the relationship of changes in QOL-B-RSS to changes in bacterial load using a mixed-model repeated measures approach.ARD-3150 treatment resulted in a significant improvement in respiratory symptoms during the on-treatment periods with concordant results between ORBIT-3 (estimate 1.4 points, se 0.49; p=0.004) and ORBIT-4 (estimate 1.1 point, se 0.41; p=0.006). The proportion of patients achieving a symptom improvement above the minimum clinically important difference was higher with ARD-3150 compared with placebo during on-treatment cycles (p=0.024). Changes in respiratory symptoms were correlated with changes in bacterial load in the treatment group (r=-0.89, p<0.0001). Individual estimates for decrements in the QOL-B RSS during exacerbation were -9.4 points (se 0.91) in ORBIT-3 and -10.8 points (0.74) in ORBIT-4 (both p<0.0001).Inhaled ARD-3150 resulted in significant improvements in respiratory symptoms during the on-treatment periods which were lost during off-treatment periods. These results supports the concept that reducing bacterial load can improve respiratory symptoms in patients with bronchiectasis.

Sexual Behaviors and Violence in Pornography: Systematic Review and Narrative Synthesis of Video Content Analyses.

BACKGROUND: Owing to increasing access to Web-based pornography and concerns about its impact on viewers, many researchers have attempted to systematically analyze the content of pornography. OBJECTIVE: We aimed to systematically review the results of quantitative content analyses of video-based pornography and identify the degree to which the following behaviors are depicted: (1) sexual behaviors and themes, (2) condom use during sexual behaviors, and (3) aggression and violence. METHODS: Inclusion criteria for article eligibility were (1) peer-reviewed publications, (2) articles in the English language, (3) articles describing a quantitative content analysis of video pornography, and (4) articles quantitatively examining at least one variable of interest. RESULTS: A total of 23 studies met the eligibility criteria. Studies varied in scope and definitions of behavioral variables. Condom use was rare, although more commonly depicted in gay male pornography (36%-64% videos) compared with heterosexual pornography (2%-3% videos). Normative sexual behaviors were most frequently depicted in pornography samples (eg, vaginal intercourse in 48%-90% and fellatio in 52%-90% of heterosexual videos; fellatio in 66%-100% and anal intercourse in 70%-80% of gay male videos). Extreme acts of violence (1%-3% videos) and rape (0%-6% videos) were relatively rare. However, more subtle forms of aggression, such as spanking (5%-75% videos), were more common, and unequal sexual relations (eg, domination) were also common. Although estimates varied by study, dominating and violent behaviors were nearly always directed toward women. CONCLUSIONS: Condom nonuse and gender inequalities are common in pornography, which has implications for the development of healthy sexual relationships among pornography viewers. Higher quality research, including study replication and consistent methodological choices, is needed.

A Digital Pornography Literacy Resource Co-Designed With Vulnerable Young People: Development of "The Gist".

BACKGROUND: The impact of viewing pornography at a young age on the sexual health of subgroups of young people is an important public health issue. However, the topic is complex and extremely sensitive, and best practices for research and harm reduction are yet to be defined. Drawing on cross-disciplinary approaches, such as co-design, is one way to achieve a better understanding of the issue among vulnerable young people and to create needs-based and evidence-informed digital resources to promote pornography literacy. OBJECTIVE: The objective of this study was to co-design a relevant, usable, and acceptable digital prototype to address the pornography literacy needs of vulnerable young people. METHODS: In total, 17 young people aged between 14 and 23 years who were engaged in youth services programs or alternative education programs were recruited to participate in 4 co-design workshops with a multidisciplinary design team. RESULTS: Although the participants could identify problems with pornography and critique its messages, they lacked the information to understand alternative healthy attitudes and behaviors. A digital resource that provides detailed and practical information about sex, sexual ethics, and relationships may help vulnerable young people to identify and contrast with any problematic messages they receive from both pornography and society. Embedding this information with pornography literacy messages may be a more effective way of addressing underlying attitudes. Acknowledging information-seeking patterns and leveraging user interaction patterns from commonly used digital platforms among users may enhance engagement with resources. Importantly, digital platforms are perceived among this group as a source of anonymous secondary information but would not be organically accessed among this group without face-to-face conversations as an access point. CONCLUSIONS: This paper highlights the potential for pornography literacy to be embedded within real and practical information about having sex, navigating sexuality, and healthy relationships. The study findings include important recommendations for the conceptualization of digital pornography literacy programs and opportunities for cross-disciplinary co-design research to address complex and emerging health issues.

A descriptive analysis of young women's pornography use: a tale of exploration and harm.

Background Despite viewing less often than young men, young women view pornography. This study used an online survey to describe young women's pornography use and their reflections on the influence of this use. METHODS: Young Australian women (15-29 years) were recruited via Facebook to complete an online survey in 2016. Respondents who had ever viewed pornography (n = 491) were asked 10 closed-ended questions related to their exposure to pornography and an open-ended question: 'How has pornography influenced your life?'. Quantitative responses were descriptively analysed. Qualitative responses were thematically analysed using a descriptive qualitative approach. RESULTS: Most respondents (89%) watched pornography alone for sexual arousal and openly reflected on the influence of their own use. Two overarching themes were identified across qualitative data. The first, exploration, included positive sub-themes of safety, independence, normalisation of sexuality and diversity in body type. The second, harm, included negative sub-themes related to conditioning, comparison and dependency. Themes were identified separately among two discrete groups, but were also described concurrently among a third group of (mostly older) respondents who experienced pornography both as a place for exploration and as a potential source of harm. CONCLUSION: Young women watch pornography and have positive, negative and mixed experiences that they link to their own viewing. Future research must provide a safe space for young women to be honest regarding their pornography use to ensure that their perspectives are heard and understood.

Non-consensual sharing of personal sexually explicit imagery among young people in Australia: results from an online survey.

Consensual sharing of personal sexually explicit imagery (SEI) is part of young people's sexual practise; however, harms arise if content is shared without consent. Australians aged 15-29 years were recruited for an online survey. Participants indicated if they had ever sent SEI of themselves to someone else, received SEI directly from the person in the imagery and whether they thought it was illegal to forward SEI without consent. Participants reported whether anyone shared their SEI without permission, if they told people, made official reports or if there were consequences for perpetrator(s). Logistic regression was used to identify associations between victimisation, gender, age group, sexual identity and knowledge of SEI-related law. In total, 1007 participants (65% female, mean age 23 years, 67% heterosexual) were recruited; 63% sent personal SEI to another person, 71% received SEI from the person pictured and 77% correctly identified it is illegal to forward SEI without consent. Thirteen percent (n = 126) indicated another person forwarded personal SEI without consent. In univariate analysis, victimisation was associated with identifying as non-heterosexual (odds ratio = 1.51, confidence interval = 1.03-2.22), but was independent from age group, gender and knowledge. In multivariate analysis, sexual identity, age group, gender and knowledge were not significantly associated with victimisation. Among participants who experienced non-consensual sharing of personal SEI, 63% told friends, 10% told family, 93% made no official report and 94% reported no consequences for perpetrator(s). Initiatives are needed to promote legal rights and enable young people to seek support.

Genome of 'Charleston Gray', the principal American watermelon cultivar, and genetic characterization of 1,365 accessions in the U.S. National Plant Germplasm System watermelon collection.

Years of selection for desirable fruit quality traits in dessert watermelon (Citrullus lanatus) has resulted in a narrow genetic base in modern cultivars. Development of novel genomic and genetic resources offers great potential to expand genetic diversity and improve important traits in watermelon. Here, we report a high-quality genome sequence of watermelon cultivar 'Charleston Gray', a principal American dessert watermelon, to complement the existing reference genome from '97103', an East Asian cultivar. Comparative analyses between genomes of 'Charleston Gray' and '97103' revealed genomic variants that may underlie phenotypic differences between the two cultivars. We then genotyped 1365 watermelon plant introduction (PI) lines maintained at the U.S. National Plant Germplasm System using genotyping-by-sequencing (GBS). These PI lines were collected throughout the world and belong to three Citrullus species, C. lanatus, C. mucosospermus and C. amarus. Approximately 25 000 high-quality single nucleotide polymorphisms (SNPs) were derived from the GBS data using the 'Charleston Gray' genome as the reference. Population genomic analyses using these SNPs discovered a close relationship between C. lanatus and C. mucosospermus and identified four major groups in these two species correlated to their geographic locations. Citrullus amarus was found to have a distinct genetic makeup compared to C. lanatus and C. mucosospermus. The SNPs also enabled identification of genomic regions associated with important fruit quality and disease resistance traits through genome-wide association studies. The high-quality 'Charleston Gray' genome and the genotyping data of this large collection of watermelon accessions provide valuable resources for facilitating watermelon research, breeding and improvement.

Impact of residual coronary atherosclerosis on transfemoral transcatheter aortic valve replacement.

OBJECTIVES: This study reports on the clinical effects of complete vs incompletely revascularized coronary artery disease on transcatheter aortic valve replacement (TAVR). BACKGROUND: There is a high prevalence of active coronary artery disease (CAD) in patients undergoing TAVR but preemptive revascularization remains controversial. METHODS: Patients were categorized into three cohorts: complete revascularization (CR), incomplete revascularization of a major epicardial artery (IR Major), and incomplete revascularization of a minor epicardial artery only (IR Minor). When feasible, SYNTAX scoring was performed for exploratory analysis. Analyses were performed using Cox proportional hazard models and Kaplan-Meier method. RESULTS: A total of 323 patients with active CAD were included. Adjusted outcomes showed that patients with IR Major had increased incidence of acute myocardial infarction (AMI) or revascularization compared with those in the CR cohort (HR 3.72, P = 0.048). No difference was noted in all-cause mortality or all-cause readmission rates. Exploratory secondary analysis with residual SYNTAX scores showed a significant interaction between disease burden and AMI/revascularization, as well as all-cause readmission. All-cause mortality remained unaffected based on residual SYNTAX scores. CONCLUSIONS: This is a retrospective single-center study reporting on pre-TAVR revascularization outcomes in patients with active CAD. In this analysis, we found that patients undergoing TAVR benefited from achieving complete revascularization to abate future incidence of AMI/revascularization. Despite this finding, all-cause mortality remained unaffected. Future efforts should focus on the role of functional assessment of the coronaries, as well as the long-term effects of complete revascularization in a larger patient cohort.

Personal and reported partner pornography viewing by Australian women, and association with mental health and body image.

Background Personal and partner pornography viewing may affect health and wellbeing. This study aimed to improve understanding of the effects of pornography on mental health and body image, given emerging evidence of increasing use, particularly among young people. METHODS: A cross-sectional survey was implemented, targeting people who had accessed health and fitness content via social media. Convenience sampling was used and participants were recruited via advertising on social media. RESULTS: Overall, 76% (75/99) of women reported having ever viewed pornography, and 21% had viewed pornography frequently (monthly/weekly/daily) in the prior 12 months. The association between frequent viewing and higher-risk Kessler 10 Psychological Distress Scale scores lost significance once controlled for age (adjusted OR 2.30, 95%CI 0.82-6.49, P=0.11). There was an association with frequent reported partner pornography use (monthly/weekly/daily) and increased Drive for Muscularity scores (adjusted OR 2.20, 95%CI 1.01-4.80, P=0.048). There were no other associations found with pornography use (personal or partner) and body image or mental health, although this was limited by the small sample size. Most women (85%, 41/48) reported being happy with their partner's pornography use, and in qualitative responses, indicated that pornography had minimal effect on their lives. Nevertheless, multiple qualitative responses indicated a multiplicity of perceived effects of pornography, including negative effects on body image. CONCLUSIONS: Pornography had a minor effect on mental health and body image in this study. Additional research is required to improve understanding of the effects of pornography on body image and mental health, particularly among vulnerable individuals.

The independent contribution of Pseudomonas aeruginosa infection to long-term clinical outcomes in bronchiectasis.

Pseudomonas aeruginosa is responsible for chronic infection in many bronchiectasis patients but it is not known whether it is associated with worse clinical outcomes independent of the underlying severity of disease.This study analysed data from 2596 bronchiectasis patients included from 10 different bronchiectasis clinical centres across Europe and Israel, with a 5-year follow-up period. Prevalence of P. aeruginosa chronic infection and its independent impact on exacerbations, hospitalisations, quality of life and mortality was assessed.The prevalence of P. aeruginosa chronic infection was 15.0% (n=389). P. aeruginosa was associated with a higher mortality in a univariate analysis (hazard ratio (HR) 2.02; 95% (confidence interval) CI 1.53-2.66; p<0.0001) but an independent impact on mortality was not found in a multivariate analysis (HR 0.98; 95% CI 0.70-1.36; p=0.89). P. aeruginosa was independently associated with increased mortality only in patients with frequent exacerbations (two or more per year) (HR 2.03; 95% CI 1.36-3.03; p=0.001). An independent association with worse quality of life of 7.46 points (95% CI 2.93-12.00; p=0.001) was found in a multivariable linear regression. P. aeruginosa was therefore found to be independently associated with exacerbation frequency, hospital admissions and worse quality of life. Mortality was increased in patients with P. aeruginosa particularly in the presence of frequent exacerbations.

Safety of shorter length of hospital stay for patients undergoing minimalist transcatheter aortic valve replacement.

OBJECTIVE: Determine the feasibility and predictors of early discharge after minimalist transcatheter aortic valve replacement (TAVR). BACKGROUND: Duration of hospitalization has a direct impact on overall cost of care, but the clinical impact of length of stay (LOS) in patients undergoing minimalist TAVR remains unclear. METHODS: We studied 268 patients who underwent minimalist TAVR. Short LOS (sLOS) was defined as post-procedural LOS ≤ 3 days and observed in 163 patients. Prolonged LOS (pLOS) was observed in 105 patients. Propensity score matching based on 39 variables yielded 54 pairs of patients in each group. We analyzed 30-day mortality, 30-day re-hospitalization and long-term survival data. Multivariate regression models were used to define predictors of sLOS. RESULTS: Thirty-day mortality was 0% versus 5.5% in the sLOS and pLOS groups, respectively (P = 0.08). Incidence of re-hospitalization was higher in pLOS (13% vs. 3.7%). sLOS was associated with lower odds ratio of minor vascular complication (OR 0.1 [95% CI: 0.01, 0.75], P = 0.05), any bleeding (OR 0.35 [95% CI: 0.14, 0.87], P = 0.02), blood transfusion (OR 0.27 [95% CI: 0.08, 0.81], P = 0.02), and new pacemaker implantation (OR 0.23 [95% CI: 0.1, 0.53], P < 0.001). Discharge to home had a significantly higher odd ratio for sLOS (OR 8.67 [95% CI: 3.59, 23.11], P < 0.001). CONCLUSION: In appropriately selected patients, sLOS following minimalist TAVR approach in an experienced and high volume center is feasible and safe. Implementing such a strategy may reduce medical costs with the potential clinical benefit of early re-habilitation for the elderly TAVR population.

Assessment of gonadal and thyroid histology in Gulf killifish (Fundulus grandis) from Barataria Bay Louisiana one year after the Deepwater Horizon oil spill.

We examined gonads and thyroid glands of Gulf killifish (Fundulus grandis) 1yr after the Deepwater Horizon oil spill. F. grandis were trapped from two impacted sites in Barataria Bay (Bayou St. Denis, Bay Jimmy) and an un-impacted site in East Texas (Sabine Pass). The greatest number of F. grandis were collected at Sabine Pass. F. grandis collected at Bayou St. Denis were smaller and had smaller Fulton condition factor scores than fish collected at Sabine Pass. Sex ratios were biased roughly 2:1 in favor of females at Sabine Pass and Bayou St. Denis. Gonad-somatic index (GSI) in males from Sabine Pass was double that of fish from Bay Jimmy while germinal epithelium thickness of the testes was 2.7 fold smaller in males from the impacted site. GSI and oocyte diameters in females from Bayou St. Denis were significantly smaller than females from Bay Jimmy or the reference site. There were no differences in thyroid follicle cell height. While total polyaromatic hydrocarbons at the impacted sites were no different from the reference site, the impacted sites did have greater concentrations of benzo[a]pyrene in sediment pore water. The finding of smaller GSI and testicular germinal epithelium in males from an impacted site suggest that exposure to a combination of oil and dispersants may adversely impact testicular function.

Correlates of in-person and technology-facilitated sexual harassment from an online survey among young Australians.

Background Technology-facilitated sexual harassment is an emerging phenomenon. This study investigates correlates of sexual harassment among young Australians. METHODS: Participants aged 15-29 were recruited for an online survey. Participants reported how often in the past year they experienced sexual harassment in person, via phone, social media and dating apps. Correlates of in-person and technology-facilitated sexual harassment were identified using logistic regression. RESULTS: Of all participants (n=1272, 70% female), two-thirds reported sexual harassment in person, 34% through social media and 26% via phone. Of participants who used a dating app in the past year (n=535), 57% experienced sexual harassment. Sexual harassment in person was correlated with being female (aOR=9.2, CI=6.9-12.2), trans and gender diverse (aOR=2.6, CI=1.2-5.7) and being aged 20-24 years (aOR=1.5, CI=1.1-2.1). Heterosexual identity reduced the odds of sexual harassment in person (aOR=0.7, CI=0.5-0.9). Technology-facilitated sexual harassment was correlated with female (aOR=3.5, CI=2.6-4.6) and trans and gender diverse identities (aOR=3.0, CI=1.4-6.5). Older age [25-29 years (aOR=0.5, CI=0.4-0.8)] and heterosexual identity (aOR=0.7, CI=0.5-0.9) significantly reduced the odds of technology-facilitated sexual harassment. CONCLUSION: Young people identifying as female, trans and gender diverse and non-heterosexual are at risk of in-person and technology-facilitated sexual harassment. Service and technology providers, academics, and policy makers must respond with innovative strategies.

Comparative transcriptome analysis of two contrasting watermelon genotypes during fruit development and ripening.

BACKGROUND: Watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai] is an economically important crop with an attractive ripe fruit that has colorful flesh. Fruit ripening is a complex, genetically programmed process. RESULTS: In this study, a comparative transcriptome analysis was performed to identify the regulators and pathways that are involved in the fruit ripening of pale-yellow-flesh cultivated watermelon (COS) and red-flesh cultivated watermelon (LSW177). We first identified 797 novel genes to extend the available reference gene set. Second, 3958 genes in COS and 3503 genes in LSW177 showed at least two-fold variation in expression, and a large number of these differentially expressed genes (DEGs) during fruit ripening were related to carotenoid biosynthesis, plant hormone pathways, and sugar and cell wall metabolism. Third, we noted a correlation between ripening-associated transcripts and metabolites and the key function of these metabolic pathways during fruit ripening. CONCLUSION: The results revealed several ripening-associated actions and provide novel insights into the molecular mechanisms underlying the regulation of watermelon fruit ripening.

The quinone methide aurin is a heat shock response inducer that causes proteotoxic stress and Noxa-dependent apoptosis in malignant melanoma cells.

Pharmacological induction of proteotoxic stress is rapidly emerging as a promising strategy for cancer cell-directed chemotherapeutic intervention. Here, we describe the identification of a novel drug-like heat shock response inducer for the therapeutic induction of proteotoxic stress targeting malignant human melanoma cells. Screening a focused library of compounds containing redox-directed electrophilic pharmacophores employing the Stress & Toxicity PathwayFinder(TM) PCR Array technology as a discovery tool, a drug-like triphenylmethane-derivative (aurin; 4-[bis(p-hydroxyphenyl)methylene]-2,5-cyclohexadien-1-one) was identified as an experimental cell stress modulator that causes (i) heat shock factor transcriptional activation, (ii) up-regulation of heat shock response gene expression (HSPA6, HSPA1A, DNAJB4, HMOX1), (iii) early unfolded protein response signaling (phospho-PERK, phospho-eIF2α, CHOP (CCAAT/enhancer-binding protein homologous protein)), (iv) proteasome impairment with increased protein-ubiquitination, and (v) oxidative stress with glutathione depletion. Fluorescence polarization-based experiments revealed that aurin displays activity as a geldanamycin-competitive Hsp90α-antagonist, a finding further substantiated by molecular docking and ATPase inhibition analysis. Aurin exposure caused caspase-dependent cell death in a panel of human malignant melanoma cells (A375, G361, LOX-IMVI) but not in non-malignant human skin cells (Hs27 fibroblasts, HaCaT keratinocytes, primary melanocytes) undergoing the aurin-induced heat shock response without impairment of viability. Aurin-induced melanoma cell apoptosis depends on Noxa up-regulation as confirmed by siRNA rescue experiments demonstrating that siPMAIP1-based target down-regulation suppresses aurin-induced cell death. Taken together, our data suggest feasibility of apoptotic elimination of malignant melanoma cells using the quinone methide-derived heat shock response inducer aurin.

Development of cleaved amplified polymorphic sequence markers and a CAPS-based genetic linkage map in watermelon (Citrullus lanatus [Thunb.] Matsum. and Nakai) constructed using whole-genome re-sequencing data.

Cleaved amplified polymorphic sequence (CAPS) markers are useful tools for detecting single nucleotide polymorphisms (SNPs). This study detected and converted SNP sites into CAPS markers based on high-throughput re-sequencing data in watermelon, for linkage map construction and quantitative trait locus (QTL) analysis. Two inbred lines, Cream of Saskatchewan (COS) and LSW-177 had been re-sequenced and analyzed by Perl self-compiled script for CAPS marker development. 88.7% and 78.5% of the assembled sequences of the two parental materials could map to the reference watermelon genome, respectively. Comparative assembled genome data analysis provided 225,693 and 19,268 SNPs and indels between the two materials. 532 pairs of CAPS markers were designed with 16 restriction enzymes, among which 271 pairs of primers gave distinct bands of the expected length and polymorphic bands, via PCR and enzyme digestion, with a polymorphic rate of 50.94%. Using the new CAPS markers, an initial CAPS-based genetic linkage map was constructed with the F2 population, spanning 1836.51 cM with 11 linkage groups and 301 markers. 12 QTLs were detected related to fruit flesh color, length, width, shape index, and brix content. These newly CAPS markers will be a valuable resource for breeding programs and genetic studies of watermelon.

Exome sequencing of patients with histiocytoid cardiomyopathy reveals a de novo NDUFB11 mutation that plays a role in the pathogenesis of histiocytoid cardiomyopathy.

Histiocytoid cardiomyopathy (Histiocytoid CM) is a rare form of cardiomyopathy observed predominantly in newborn females that is fatal unless treated early in life. We have performed whole exome sequencing on five parent-proband trios and identified nuclear-encoded mitochondrial protein mutations in three cases. The molecular genetic basis of Histiocytoid CM remains unknown despite several hypotheses in medical literature. The findings presented in this manuscript may represent components of genetic etiologies for this heterogeneous disease. Two probands had de novo non-sense mutations in the second exon of the X-linked nuclear gene NDUFB11. A third proband was doubly heterozygous for inherited rare variants in additional components of complex I, NDUFAF2 and NDUFB9, confirming that Histiocytoid CM is genetically heterogeneous. In a fourth case, the proband with Histiocytoid CM inherited a mitochondrial mutation from her heteroplasmic mother, as did her brother who presented with cardiac arrhythmia. Strong candidate recessive or compound heterozygous variants were not found for this individual or for the fifth case. Although NDUFB11 has not been implicated before in cardiac pathology, morpholino-mediated knockdown of ndufb11 in zebrafish embryos generated defective cardiac tissue with cardiomegaly, looping defects, and arrhythmia which suggests the role of NDUFB11 in the pathogenesis of this abnormal cardiac pathology. Taken together, the unbiased whole exome sequencing approach confirms the suspected genetic heterogeneity of Histiocytoid CM. Therefore, the novel NDUFB11 mutation may cause a complex 1 deficiency in synergy with additional unknown mtDNA variants.

Does marriage explain murders in a society? In what way is divorce a public health concern?

INTRODUCTION: Like medicine, public health practitioners seek to understand causes of mortality, practices of humans and issues that can change population conditions, in order to preserve and care for life. The murder pandemic has been such in Jamaica that the World Bank sponsored a qualitative study on crime in urban areas in Jamaica in the late 1990s to provide a platform to guide policy intervention and programmes. As a result this study will fill the gap in the literature by providing the evidence to support that divorce and marriage are public health concerns from the perspective of murders. OBJECTIVE: To evaluate the role of divorce and marital relationships on murders. MATERIALS AND METHODS: The data for this study are taken from various Jamaica Government Publications. The period for this work is from 1950 through 2013. Data were recorded, stored and retrieved using the Statistical Packages for the Social Sciences (SPSS) for Windows, Version 21.0. The level of significance that is used to determine statistical significance is less than 5% (0.05). Ordinary least square (OLS) regression analyses and curve estimations were used to determine models and best fitted models. RESULTS: On average, annually, 523 Jamaicans are murdered (± 484), with there being 9,531 marriages (± 22,747) and 904 divorces (± 468). Logged marriage rate and divorce rate are factors of murder rate, with both independent factors accounting for 82.2% of the variability in the murder rate. Both factors are positively correlated with the murder rate, with the divorce rate accounting for most of the variance in the murder rate (R2 = 79.2%). CONCLUSION: Death can be extremely devasting to families, however, murder among married couples can severely disrupt the lives of both families along with any children from such relationship.