Family Related Factors and Concurrent Heroin Use in Methadone Maintenance Treatment in China.

BackgroundThe use of heroin during Methadone Maintenance Treatment (MMT) is a challenging problem that contributes to poor treatment outcomes. Families may play an important role in addressing concurrent heroin use during MMT, especially in collectivist societies such as China.ObjectivesIn this study, we explored the relationship between family-related factors and concurrent heroin use during MMT in China.MethodsThis study was conducted at 68 MMT clinics in five provinces of China. There were 2,446 MMT clients in the analysis. Demographic information, MMT dosage, family members' heroin use status, family support of MMT, family problem, and self-reported heroin use were collected in a cross-sectional survey. The most recent urinalysis of opiate use was obtained from clinical records.ResultsOf the 2,446 participants, 533 (21.79%) self-reported heroin use in the previous seven days or had a positive urine morphine test result in the clinic record. Participants whose family member[s] used heroin were 1.59 times (95% CI: 1.17, 2.15) more likely to use concurrently during treatment. Those with family members who totally support them on the MMT were less likely to use (AOR: 0.75, 95% CI: 0.60, 0.94). Having more family problems was positively associated with concurrent heroin use (AOR: 2.01, 95% CI: 1.03, 3.93).ConclusionsThe results highlight the importance of the family's role in concurrent heroin use during MMT programs. The study's findings may have implications for family-based interventions that address concurrent heroin use

Who Lives in the C-Suite? Organizational Structure and the Division of Labor in Top Management

This paper shows that top management structures in large US firms radically changed since the mid-1980s. While the number of managers reporting directly to the CEO doubled, the growth was driven primarily by functional managers rather than general managers. Using panel data on senior management positions, we explore the relationship between changes in executive team composition, firm diversification, and IT investments—which arguably alter returns to exploiting synergies through corporate-wide coordination by functional managers in headquarters. We find that the number of functional managers closer to the product (“product” functions i.e., marketing, R&D) increase as firms focus their businesses, while the number of functional managers farther from the product (“administrative” functions i.e., finance, law, HR) increase with IT investments. Finally, we show that general manager pay decreases as functional managers join the executive team suggesting a shift in activities from general to functional managers—a phenomenon we term “functional centralization.”

An intervention trial targeting methadone maintenance treatment providers to improve clients' treatment retention in China.

BackgroundService providers including doctors, nurses, and other healthcare professionals play an essential role in methadone maintenance treatment (MMT). This study evaluated the impact of an intervention targeting MMT providers on their clients' treatment retention.MethodsThis study was conducted in 68 MMT clinics in five provinces of China with 36 clients randomly selected from each clinic. The clinics were randomized to intervention or control condition. The MMT CARE intervention started with group sessions to enhance providers' communication skills. The trained providers were encouraged to conduct individual sessions with clients to promote treatment engagement. The outcomes, which include client retention (main outcome) and their reception of provider-delivered individual sessions (process outcome), were measured over a 24-month period.ResultsSignificantly fewer intervention clients dropped out from MMT than control clients during the study period (31% vs. 41%; p < 0.0001). Dropout hazard was significantly lower in the intervention condition compared to the control condition (HR = 0.71, 95% CI: 0.57, 0.89). More intervention clients had individual sessions than control clients (93% vs. 70%; p < 0.0001). Having individual sessions was associated with a significantly lower dropout hazard (HR = 0.30, 95% CI: 0.23, 0.40). The intervention clients had a significantly lower dropout hazard than the control clients if they started the individual sessions during the first six months (HR = 0.68, 95% CI: 0.51, 0.90).ConclusionsThe MMT CARE intervention focusing on provider capacity building has demonstrated efficacy in reducing clients' treatment dropout. This study sheds light on MMT service improvement in China and other global community-based harm reduction programs

Quantification of Ampicillin Through Kinetic Exclusion Assay (KinExA) Technology

This work is focused on investigating the utilization of aptamers in conjunction with the Kinetics Exclusion Assay (KinExA) technology for detection and quantification of the antibiotic ampicillin in solutions. To achieve the scientific objectives of this project, I exploited the strong affinity of biotin for streptavidin and functionalized microscopic beads to be utilized as capture elements for fluorescent, free ampicillin aptamers left in equilibrated solutions. To capture single stranded DNA aptamers, the last layer immobilized on the beads comprised single stranded DNA molecules complementary to the aptamer’s sequence. Equilibrated mixtures of a fixed aptamer concentration and variable ampicillin concentrations have been flown over the beads and assessed with the KinExA 4000 instrument to evaluate the fraction of free aptamers in solutions. The experimental data have been plotted and analyzed to determine the affinity of the aptamers for ampicillin, estimate the range of quantifiable ampicillin concentrations, and measure the ampicillin concentrations in three mock samples. The data demonstrate that ampicillin can be accurately detected and quantified by employing the KinExA technology; the proposed methodology may be adapted for quantification of other molecules of interest, including disease biomarkers and environmental pollutants

The Adaptive Significance of Natural Genetic Variation in the DNA Damage Response of Drosophila melanogaster.

Despite decades of work, our understanding of the distribution of fitness effects of segregating genetic variants in natural populations remains largely incomplete. One form of selection that can maintain genetic variation is spatially varying selection, such as that leading to latitudinal clines. While the introduction of population genomic approaches to understanding spatially varying selection has generated much excitement, little successful effort has been devoted to moving beyond genome scans for selection to experimental analysis of the relevant biology and the development of experimentally motivated hypotheses regarding the agents of selection; it remains an interesting question as to whether the vast majority of population genomic work will lead to satisfying biological insights. Here, motivated by population genomic results, we investigate how spatially varying selection in the genetic model system, Drosophila melanogaster, has led to genetic differences between populations in several components of the DNA damage response. UVB incidence, which is negatively correlated with latitude, is an important agent of DNA damage. We show that sensitivity of early embryos to UVB exposure is strongly correlated with latitude such that low latitude populations show much lower sensitivity to UVB. We then show that lines with lower embryo UVB sensitivity also exhibit increased capacity for repair of damaged sperm DNA by the oocyte. A comparison of the early embryo transcriptome in high and low latitude embryos provides evidence that one mechanism of adaptive DNA repair differences between populations is the greater abundance of DNA repair transcripts in the eggs of low latitude females. Finally, we use population genomic comparisons of high and low latitude samples to reveal evidence that multiple components of the DNA damage response and both coding and non-coding variation likely contribute to adaptive differences in DNA repair between populations

A novel integrative risk index of papillary thyroid cancer progression combining genomic alterations and clinical factors.

Although the majority of papillary thyroid cancer (PTC) is indolent, a subset of PTC behaves aggressively despite the best available treatment. A major clinical challenge is to reliably distinguish early on between those patients who need aggressive treatment from those who do not. Using a large cohort of PTC samples obtained from The Cancer Genome Atlas (TCGA), we analyzed the association between disease progression and multiple forms of genomic data, such as transcriptome, somatic mutations, and somatic copy number alterations, and found that genes related to FOXM1 signaling pathway were significantly associated with PTC progression. Integrative genomic modeling was performed, controlling for demographic and clinical characteristics, which included patient age, gender, TNM stages, histological subtypes, and history of other malignancy, using a leave-one-out elastic net model and 10-fold cross validation. For each subject, the model from the remaining subjects was used to determine the risk index, defined as a linear combination of the clinical and genomic variables from the elastic net model, and the stability of the risk index distribution was assessed through 2,000 bootstrap resampling. We developed a novel approach to combine genomic alterations and patient-related clinical factors that delineates the subset of patients who have more aggressive disease from those whose tumors are indolent and likely will require less aggressive treatment and surveillance (p = 4.62 × 10-10, log-rank test). Our results suggest that risk index modeling that combines genomic alterations with current staging systems provides an opportunity for more effective anticipation of disease prognosis and therefore enhanced precision management of PTC

Switchgrass storage effects on the recovery of carbohydrates after liquid hot water pretreatment and enzymatic hydrolysis

Perennial grasses that would be used for bioenergy and bioproducts production will need to be stored for various periods of time to ensure a continual feedstock supply to a bioprocessing facility. The effects of storage practices on grass composition and the response of grasses to subsequent bioprocesses such as pretreatment and enzymatic hydrolysis needs to be understood to develop the most efficient storage protocols. This study examined the effect of outdoor storage of round switchgrass bales on composition before and after liquid hot water pretreatment (LHW) and enzymatic hydrolysis. This study also examined the effect of washing LHW pretreated biomass prior to enzymatic hydrolysis. It was determined that switchgrass composition after baling was stable. As expected, glucan and lignin contents increased after LHW due to decreases in xylan and galactan. Washing biomass prior to enzymatic hydrolysis reduced saccharification, especially in samples from the interior of the bale, by at least 5%

A relational self model of gender role identity of young Taiwanese women within their cultural context (China)

This research aims both to investigate the gender role identity characteristics of young Taiwanese women who grew up in the post-Martial Law era and to develop a gender role identity model of young Taiwanese women. A grounded theory approach and in-depth interviews were employed. Open sampling, variational sampling, and discriminate sampling, along with open coding, axial coding, and selective coding were employed. Twenty-three young Taiwanese undergraduate women, aged nineteen to twenty one, were interviewed. Self-in-relation theory, female moral reasoning, women\u27s ways of knowing, characteristics of collectivist cultures, Chinese/Taiwanese cultural assumptions about women, and the impact of Taiwanese women\u27s participation in the labor force were used as sources to support the interpretation of data. The results indicate that the relational self is the main gender role identity characteristic of young Taiwanese women who grew up in the post-Martial Law era. Influenced by the Confucian paradigm, multiplicity, and freedom of expression in the post-Martial Law era, the young women in this research put people into different social categories and use different Confucian ethics to interact with each category They build a less feminine and trustful relationship with familiar peers, whereas they build a traditional feminine and distant relationship with unfamiliar peers. They are cold to strangers and familiar friends who have hurt them. They adopt a chameleon-like strategy to interact with elders/teachers. They build a caring and deferential relationship with parents. In their relationship with intimate male partners, they endeavor to negotiate equal power. Compared to the literature on Taiwanese women both during the Martial Law era and the Japanese Occupation, the relationship of young Taiwanese women to their intimate male partners has changed dramatically The results also indicate that the young women in this research see their future in tern-is of jobs, marriage, and financial independence. They also intend to go abroad to open their own eyes to other cultures. Taiwan is a patriarchal society and these results indicate that several patriarchal socialization requirements of young women are still prevalent. For example, young women are not allowed to go out at night and they retain a negative image of feminists. According to the findings of this research, a relational self model of young Taiwanese women within their cultural context is proposed. Since relational self is the major characteristic of gender role identity of young Taiwanese women in this research, the findings of this research support what self-in-relation theory proposes However, adopting different ethics to interact with people is not proposed in self-in-relation theory. Therefore, this research suggests that adopting different ethics to interact with people should be included when applying self-in-relation theory to young Taiwanese women. Implications for clinical social work practice, social work education, and future research are addressed

Development of a recombinase polymerase amplification lateral flow assay for the detection of active Trypanosoma evansi infections

Author summary Neglected tropical diseases (NTDs) affecting humans and/or domestic animals severely impair the socio-economic development of endemic areas. One of these diseases, animal trypanosomosis, affects livestock and is caused by the parasites of the Trypanosoma genus. The most widespread causative agent of animal trypanosomosis is T. evansi, which is found in large parts of the world (Africa, Asia, South America, Middle East, and the Mediterranean). Proper control and treatment of the disease requires the availability of reliable and sensitive diagnostic tools. DNA-based detection techniques are powerful and versatile in the sense that they can be tailored to achieve a high specificity and usually allow the reliable detection of low amounts of parasite genetic material. However, many DNA-based methodologies (such as PCR) require trained staff and well-equipped laboratories, which is why the research community has actively investigated in developing amplification strategies that are simple, fast, cost-effective and are suitable for use in minimally equipped laboratories and field settings. In this paper, we describe the development of a diagnostic test under a dipstick format for the specific detection of T. evansi, based on a DNA amplification principle (Recombinase Polymerase Amplification aka RPA) that meets the above-mentioned criteria. Background Animal trypanosomosis caused by Trypanosoma evansi is known as "surra" and is a widespread neglected tropical disease affecting wild and domestic animals mainly in South America, the Middle East, North Africa and Asia. An essential necessity for T. evansi infection control is the availability of reliable and sensitive diagnostic tools. While DNA-based PCR detection techniques meet these criteria, most of them require well-trained and experienced users as well as a laboratory environment allowing correct protocol execution. As an alternative, we developed a recombinase polymerase amplification (RPA) test for Type A T. evansi. The technology uses an isothermal nucleic acid amplification approach that is simple, fast, cost-effective and is suitable for use in minimally equipped laboratories and even field settings. Methodology/Principle findings An RPA assay targeting the T. evansi RoTat1.2 VSG gene was designed for the DNA-based detection of T. evansi. Comparing post-amplification visualization by agarose gel electrophoresis and a lateral flow (LF) format reveals that the latter displays a higher sensitivity. The RPA-LF assay is specific for RoTat1.2-expressing strains of T. evansi as it does not detect the genomic DNA of other trypanosomatids. Finally, experimental mouse infection trials demonstrate that the T. evansi specific RPA-LF can be employed as a test-of-cure tool