Different immune contextures underlie tumor site-specific responses to immune checkpoint blockade in esophageal cancer

Immune checkpoint inhibitors (ICIs) have demonstrated efficacy in advanced esophageal squamous cell carcinoma (ESCC). Heterogeneous responses to ICIs have been reported previously. Here, we describe a patient with advanced ESCC exhibiting a response to durvalumab plus tremelimumab for more than 6 months except primary resistant esophageal tumor. The esophageal tumor had higher regulatory T cells, neutrophils, and mast cells scores estimated by NanoString platform than hepatic tumor. The immunohistochemistry study confirmed higher expression levels of Foxp3, and myeloperoxidase (MPO) in the esophageal tumor. The different immune contextures may underlie the heterogeneous responses to ICI combination in this ESCC patient.

Apelin as a Potential Regulator of Peak Athletic Performance

Apelin, as a cardiokine/myokine, is emerging as an important regulator of cardiac and skeletal muscle homeostasis. Loss of apelin signaling results in premature cardiac aging and sarcopenia. However, the contribution of apelin to peak athletic performance remains largely elusive. In this paper, we assessed the impact of maximal cardiorespiratory exercise testing on the plasma apelin levels of 58 male professional soccer players. Circulating apelin-13 and apelin-36, on average, increased transiently after a single bout of treadmill exercise; however, apelin responses (Δapelin = peak - baseline values) showed a striking interindividual variability. Baseline apelin-13 levels were inversely correlated with those of Δapelin-13 and Δapelin-36. Δapelin-13 showed a positive correlation with the maximal metabolic equivalent, relative maximal O₂ consumption, and peak circulatory power, whereas such an association in the case of Δapelin-36 could not be detected. In conclusion, we observed a pronounced individual-to-individual variation in exercise-induced changes in the plasma levels of apelin-13 and apelin-36. Since changes in plasma apelin-13 levels correlated with the indicators of physical performance, whole-body oxygen consumption and pumping capability of the heart, apelin, as a novel exerkine, may be a determinant of peak athletic performance.

Differential Response and the Reduction of Child Maltreatment and Foster Care Services Utilization in the U.S. From 2004 to 2017

By 2014, the majority of U.S. states had implemented differential response (DR), a system policy that seeks to serve families of low-to moderate-risk for child maltreatment through family engagement, diversion from formal child protective services investigations, and service provision. However, the effects of DR programs on child welfare dynamics have yet to be evaluated nationally using causal methods. Using a quasi-experimental study design with data drawn from the National Child Abuse and Neglect Data System from 2004 to 2017, we found states with DR programs had approximately 19% fewer substantiated reports, 25% fewer children substantiated for neglect, and a 17% reduction in foster care services utilization when compared to states without DR programs. We find these estimates to be robust to the opioid epidemic and incarceration rates. Additional research is needed to better characterize DR programs and isolate the effects of DR programs geographically.

Dietary RNAi toxicity assay exhibits differential responses to ingested dsRNAs among lady beetles

BACKGROUND

Most recently, major federal regulatory agencies deregulated an in planta RNA interference (RNAi) trait against a devastating corn pest, the western corn rootworm Diabrotica virgifera virgifera, in the United States and Canada. The impact of double-stranded RNA (dsRNA) plant-incorporated protectants (PIPs) and dietary RNAi to non-target organisms, however, still needs further investigation. In this study, we assessed the potential risks of a Diabrotica virgifera virgifera active dsRNA to a group of predatory biological control agents, including Hippodamia convergens, Harmonia axyridis, Coleomegilla maculata, and Coccinella septempunctata. The overarching hypothesis is that the insecticidal dsRNA targeting Diabrotica virgifera virgifera has no or negligible adverse effect on lady beetles.

RESULTS

A 400-bp fragment with the highest sequence similarity between target and tested species was selected as the template for dsRNA synthesis. For the dietary RNAi toxicity assay, newly hatched first instar larvae were administered with v-ATPase A dsRNAs designed from Diabrotica virgifera virgifera and the four lady beetles, respectively. A dsRNA from β-glucuronidase (GUS), a plant gene, and H₂ O were served as the negative controls. The endpoint included both sub-organismal (gene expression), and organismal (survival rate, development time, pupa and adult weight) measurements. The results from dietary RNAi toxicity assay demonstrate significantly impacts of Diabrotica virgifera virgifera-active dsRNAs on lady beetles under the worst-case scenario at both transcriptional and phenotypic level. Interestingly, substantial differences among the four lady beetle species were observed toward the ingested exogenous dsRNAs.

CONCLUSION

Such differential response to dietary RNAi may shed light on the mechanisms underlying the mode-of-action of RNAi-based biopesticides. © 2020 Society of Chemical Industry.

Accessing Alternative Response Payways: A Multi-Level Examination of Family and Community Factors on Race Equity

BACKGROUND

Although research has identified factors associated with child welfare involvement, less attention has been paid to how Black families are assigned to types of child welfare responses. The advent of alternative response pathways allows child protection workers to assign child abuse and neglect responses to families based on the type and seriousness of the maltreatment, history of prior reports and age of the child.

OBJECTIVE

The effects of family and community characteristics on alternative response pathways are examined by exploring decision-making at two points in the child welfare system: access to an alternative response child welfare system and assignment to either an investigative or alternative response pathway.

PARTICIPANTS AND SETTING

Black and White families reported for child abuse and neglect (N = 31,802) in New York State were studied.

METHODS

Using data from the National Child Abuse and Neglect Data System matched with New York State county socioeconomic indicators, logistic and multi-level analyses examined the effect of county-level variables on family characteristics.

RESULTS

The analysis determined that Black children and families were not assigned to alternative response pathways similarly to White families especially in counties where indication rates were higher.

CONCLUSION

Findings imply that Black families involved in the child welfare system may benefit from increased access to culturally responsive interventions that target neighborhoods with high indication rates.

Differential Response and Children Re-Reported to Child Protective Services: County Data From the National Child Abuse and Neglect Data System (NCANDS)

Child protection systems that implement differential response (DR) systems screen to route referrals to an investigation response (IR) or alternative response (AR). AR responses emphasize family engagement, assessment of family needs, and service linkage. Usually, AR state-level policy does not require child welfare staff to make a maltreatment determination. Jurisdictions implement DR systems differently, leading to variations in the proportion of AR cases, risk levels of cases served, and the ways families access and use services. County data from the National Child Abuse and Neglect Data System were analyzed for six states from 2004 to 2013 that implemented DR. Variation in county-level AR rates were associated with county-level re-report rates using regression models with risk adjustments for socioeconomic and other county characteristics. Counties had 3% fewer re-reports overall for each percentage increase in AR use; higher levels of AR use are related to lower levels of re-reporting. When county AR and IR cases were analyzed separately, increasing rates of AR were associated with lower re-report rates for IR cases, but higher re-report rates for AR cases. Findings for the AR and IR subgroup must be interpreted with caution as a number of technical factors may be driving these results.

A Genome-Wide Test of the Differential Susceptibility Hypothesis Reveals a Genetic Predictor of Differential Response to Psychological Treatments for Child Anxiety Disorders

BACKGROUND

The differential susceptibly hypothesis suggests that certain genetic variants moderate the effects of both negative and positive environments on mental health and may therefore be important predictors of response to psychological treatments. Nevertheless, the identification of such variants has so far been limited to preselected candidate genes. In this study we extended the differential susceptibility hypothesis from a candidate gene to a genome-wide approach to test whether a polygenic score of environmental sensitivity predicted response to cognitive behavioural therapy (CBT) in children with anxiety disorders.

METHODS

We identified variants associated with environmental sensitivity using a novel method in which within-pair variability in emotional problems in 1,026 monozygotic twin pairs was examined as a function of the pairs' genotype. We created a polygenic score of environmental sensitivity based on the whole-genome findings and tested the score as a moderator of parenting on emotional problems in 1,406 children and response to individual, group and brief parent-led CBT in 973 children with anxiety disorders.

RESULTS

The polygenic score significantly moderated the effects of parenting on emotional problems and the effects of treatment. Individuals with a high score responded significantly better to individual CBT than group CBT or brief parent-led CBT (remission rates: 70.9, 55.5 and 41.6%, respectively).

CONCLUSIONS

Pending successful replication, our results should be considered exploratory. Nevertheless, if replicated, they suggest that individuals with the greatest environmental sensitivity may be more likely to develop emotional problems in adverse environments but also benefit more from the most intensive types of treatment.

Community Factors in Differential Responses of Child Protective Services

OBJECTIVE

In response to criticisms of the traditional investigative model of child protective services (CPS) as adversarial, a Differential Response Model has emerged, with investigative and noninvestigative alternative response (AR) paths. The purpose of this study was to identify relationships of county-level community variables to response paths.

DESIGN AND SAMPLE

Secondary analysis used data from the National Child Abuse and Neglect Data System linked to county-level variables from the American Community Survey. The final dataset included 62,499 cases and 98 counties from five states.

MEASURES

Multilevel modeling was used to analyze the binary outcome variable of CPS response path (AR, non-AR). Predictor variables included indicators at child, county, and state levels.

RESULTS

County-level variables (housing vacancy, child poverty, unemployment, and households with public assistance) were significant predictors (p < .05) of CPS response path and accounted for 12.30% of variability in the final three-level model. Individual variables (report source, maltreatment type, child age, race, and number of children in the report) were also significant predictors.

CONCLUSION

County-level community variables have significant relationships with CPS response paths and impact how CPS units respond to new referrals. Research is needed to apply advanced multilevel analytic procedures to more accurately model nested relationships.

Leaf Age-Dependent Photoprotective and Antioxidative Response Mechanisms to Paraquat-Induced Oxidative Stress in Arabidopsis thaliana

Exposure of Arabidopsis thaliana young and mature leaves to the herbicide paraquat (Pq) resulted in a localized increase of hydrogen peroxide (H₂O₂) in the leaf veins and the neighboring mesophyll cells, but this increase was not similar in the two leaf types. Increased H₂O₂ production was concomitant with closed reaction centers (q_P). Thirty min after Pq exposure despite the induction of the photoprotective mechanism of non-photochemical quenching (NPQ) in mature leaves, H₂O₂ production was lower in young leaves mainly due to the higher increase activity of ascorbate peroxidase (APX). Later, 60 min after Pq exposure, the total antioxidant capacity of young leaves was not sufficient to scavenge the excess reactive oxygen species (ROS) that were formed, and thus, a higher H₂O₂ accumulation in young leaves occurred. The energy allocation of absorbed light in photosystem II (PSII) suggests the existence of a differential photoprotective regulatory mechanism in the two leaf types to the time-course Pq exposure accompanied by differential antioxidant protection mechanisms. It is concluded that tolerance to Pq-induced oxidative stress is related to the redox state of quinone A (Q_A).