Connexin 35b expression in the spinal cord of Danio rerio embryos and larvae

Electrical synapses are expressed prominently in the developing and mature nervous systems. Unlike chemical synapses, little is known about the developmental role of electrical synapses, reflecting the limitations imposed by the lack of selective pharmacological blockers. At a molecular level, the building blocks of electrical synapses are connexin proteins. In this study, we report the expression pattern for neuronally expressed connexin 35b (cx35b), the zebrafish orthologue of mammalian connexin (Cx) 36. We find that cx35b is expressed at the time of neural induction, indicating a possible early role in neural progenitor cells. Additionally, cx35b localizes to the ventral spinal cord during embryonic and early larval stages. We detect cx35b mRNA in secondary motor neurons (SMNs) and interneurons. We identified the premotor circumferential descending (CiD) interneuron as one interneuron subtype expressing cx35b. In addition, cx35b is present in other ventral interneurons of unknown subtype(s). This early expression of cx35b in SMNs and CiDs suggests a possible role in motor network function during embryonic and larval stages. J. Comp. Neurol. 522:861–875, 2014. © 2013 Wiley Periodicals, Inc.     

Composite liver tumors: A radiologic-pathologic correlation

Bi-phenotypic neoplasm refers to tumors derived from a common cancer stem cell with unique capability to differentiate histologically into two distinct tumor types. Bi-phenotypic hepatocellular carcinoma-cholangiocarcinoma (HCC-CC), although a rare tumor, is important for clinicians to recognize, since treatment options targeting both elements of the tumor are crucial. Imaging findings of bi-phenotypic HCC-CC are not specific and include features of both HCC and CC. A combination of imaging and immuno-histochemical analysis is usually needed to make the diagnosis.     

Radiotheranostics in oncology: Making precision medicine possible

A quintessential setting for precision medicine, theranostics refers to a rapidly evolving field of medicine in which disease is diagnosed followed by treatment of disease-positive patients using tools for the therapy identical or similar to those used for the diagnosis. Against the backdrop of only-treat-when-visualized, the goal is a high therapeutic index with efficacy markedly surpassing toxicity. Oncology leads the way in theranostics innovation, where the approach has become possible with the identification of unique proteins and other factors selectively expressed in cancer versus healthy tissue, advances in imaging technology able to report these tissue factors, and major understanding of targeting chemicals and nanodevices together with methods to attach labels or warheads for imaging and therapy. Radiotheranostics—using radiopharmaceuticals—is becoming routine in patients with prostate cancer and neuroendocrine tumors who express the proteins PSMA (prostate-specific membrane antigen) and SSTR2 (somatostatin receptor 2), respectively, on their cancer. The palpable excitement in the field stems from the finding that a proportion of patients with large metastatic burden show complete and partial responses, and this outcome is catalyzing the search for more radiotheranostics approaches. Not every patient will benefit from radiotheranostics; but, for those who cross the target-detected line, the likelihood of response is very high.     

Healthcare provider knowledge regarding oral contraception effectiveness for women with a history of bariatric malabsorptive procedures

BackgroundClinical practice guidelines that recommend women avoid pregnancy immediately after bariatric surgery, highlighting the need for effective contraception. However, women with a history of malabsorptive bariatric procedures should generally not use oral contraceptives, as these procedures may decrease oral contraceptive effectiveness.ObjectivesTo identify provider characteristics associated with knowledge of combined oral contraceptive (COC) effectiveness.SettingUnited States.MethodsWe analyzed weighted survey data collected from national samples of public-sector health centers and office-based physicians who regularly provide family planning services (N = 2060). We asked providers about the effectiveness of COCs for women with a history of malabsorptive procedures compared with healthy women, giving them the response options of more/equally effective, less effective, and do not know. We used multinomial logistic regression to calculate adjusted odds ratios and 95% confidence intervals to identify characteristics associated with knowledge of COC effectiveness.ResultsApproximately 55% of providers correctly answered that COCs are less effective for women with malabsorptive procedures; 25% considered COCs more/equally effective, and 20% were uncertain. Among public-sector providers, the adjusted odds of uncertainty were significantly higher for those whose clinical focus was not reproductive health, for nurses versus advanced practice clinicians, and for providers working in clinics without Title X funding. For office-based physicians, adolescent medicine providers had higher odds of uncertainty versus obstetrician-gynecologists. Physicians practicing in settings classified as “other” (such as community health centers) had higher odds of considering COCs effective compared with those practicing in hospital or university clinics.ConclusionsSubstantial proportions of surveyed providers had inadequate knowledge of COC effectiveness for women with a history of malabsorptive procedures.     

Development and Implementation of Client-Centered Nutrition Education Programs in a 4-Stage Framework

The Texas Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) sought to engage the WIC staff and community in the implementation of relevant and effective client-centered nutrition education. The program was implemented in a 4-stage framework. The collaborative process of developing client-centered nutrition education allowed members to learn from one another, thus ensuring commitment to client-centered nutrition education from all levels of staff. The co-created materials and trainings developed during the implementation played a key role. Evaluation feedback started at the infancy of implementation and gave all community members a stake in developing client-centered nutrition education and an opportunity to be invested in its success, which led to increased execution at the local agency level over the implementation stages.     

Weight Loss Intervention for Breast Cancer Survivors: A Systematic Review

To determine the effectiveness of weight loss intervention for breast cancer survivors. From October 2012 until March 2013, Pubmed was searched for weight loss intervention trials that reported body weight or weight loss as a primary outcome. Fifteen of these studies are included in this review. Of the 15 studies included, 14 resulted in statistically significant weight loss and 10 obtained clinically meaningful weight loss of ≥5 % from baseline. Evidence was provided of the feasibility of using several methods of weight loss intervention (telephone, in person, individual, group). Successful intervention used a comprehensive approach, with dietary, physical activity, and behavior modification components. Weight loss improved cardiovascular risk factors and markers of glucose homeostasis. However, there is insufficient evidence to identify the components of this intervention that led to successful weight loss, or to determine the weight loss necessary to affect biomarkers linked to breast cancer prognosis. The small number of randomized controlled trials shared several limitations, including small study sample sizes and lack of follow-up beyond 6 months. Intervention with longer follow-up revealed weight regain, showing the importance of considering strategies to promote long-term weight maintenance. Weight loss intervention for breast cancer survivors can lead to statistically significant and clinically meaningful weight loss, but the limited number of interventional studies, small sample sizes, and short duration of follow-up in many studies limit our ability to draw conclusions regarding the most efficacious weight-loss intervention after a breast cancer diagnosis. The findings to date are encouraging, but research on the effect of weight loss on breast cancer recurrence and mortality, and on prevention of weight gain for women newly diagnosed with breast cancer, is needed.     

Temporal Themes in Periviable Birth: A Qualitative Analysis of Patient Experiences

Objective Periviable birth accounts for a very small percentage of preterm deliveries but a large proportion of perinatal and neonatal morbidity. Understanding parental experiences during and after periviable deliveries may help healthcare providers determine how to best support women during these medically complex, emotionally charged clinical encounters. Methods This is a qualitative study with a voluntary sample of women who delivered between 22 and 25 weeks gestation at an academic medical center from 2014 to 2016. Women’s narratives of each periviable birth experience were transcribed and analyzed using consensus coding and a grounded theory approach to identify key themes that describe parental experiences. Results A total of 10 women were interviewed. Four emergent temporal themes: (1) the time preceding admission: feeling dismissed; (2) transfer or admission to a tertiary care center: anxiety and doubt; (3) the birth itself: fear of the outcome; and (4) the postpartum period: reflection and communication. Conclusions for practice Women that experience a periviable birth may benefit from continuous support and clear communication. Overall, care for these patients should be expanded to address the specific psychosocial needs identified during the distinctive, periviable temporal themes that emerged during interviews. Continuous longitudinal support in the form of a designated person or team should be provided to women experiencing a potential periviable birth in order to help mitigate the fear and anxiety associated with these complex birth experiences.

     

Unravelling Adrenal Oncocytic Neoplasm

Oncocytic neoplasms are rare tumors arising in the adrenal glands and usually considered as nonfunctional and benign. We report 4 cases of adrenal oncocytic neoplasm. The paucity of literature describing this entity increases the chance for misdiagnosis. Confirmatory diagnosis is by tissue sampling with adrenalectomy as the mainstay of treatment.     

Trends in Checkpoint Inhibitor Therapy for Advanced Urothelial Cell Carcinoma at the End of Life: Insights from Real-World Practice

Several immune checkpoint inhibitor therapies (CPIs) have been approved to treat metastatic urothelial cell carcinoma (mUC). Because of the favorable toxicity profile of CPI compared with chemotherapy, oncologists may have a low threshold to prescribe CPI to patients near the end of life. We evaluated trends in initiation of end-of-life systemic therapy in 1,637 individuals in the Flatiron Health Database who were diagnosed with mUC between 2015 and 2017 and who died. Rates of systemic therapy initiation in the last 30 and 60 days of life were 17.0% and 29.8%, respectively. The quarterly proportion of patients who initiated CPI within 60 days of death increased from 1.0% to 23% during the study period (p_trend < .001). After CPI approval, end-of-life CPI initiation significantly increased among patients with poor performance status (p_trend = .020) and did not significantly change among individuals with good performance status. The quarterly proportion of patients who initiated any systemic therapy at the end of life doubled (17.4% to 34.8%) during the study period, largely explained by increased CPI use. These findings suggest a dramatic rise in CPI use at the end of life in patients with mUC, a finding that may have important guideline and policy implications.