Mechanically induced localisation of SECONDARY WALL INTERACTING bZIP is associated with thigmomorphogenic and secondary cell wall gene expression.

Plant growth requires the integration of internal and external cues, perceived and transduced into a developmental programme of cell division, elongation and wall thickening. Mechanical forces contribute to this regulation, and thigmomorphogenesis typically includes reducing stem height, increasing stem diameter, and a canonical transcriptomic response. We present data on a bZIP transcription factor involved in this process in grasses. Brachypodium distachyon SECONDARY WALL INTERACTING bZIP (SWIZ) protein translocated into the nucleus following mechanostimulation. Classical touch-responsive genes were upregulated in B. distachyon roots following touch, including significant induction of the glycoside hydrolase 17 family, which may be unique to grass thigmomorphogenesis. SWIZ protein binding to an E-box variant in exons and introns was associated with immediate activation followed by repression of gene expression. SWIZ overexpression resulted in plants with reduced stem and root elongation. These data further define plant touch-responsive transcriptomics and physiology, offering insights into grass mechanotranduction dynamics.

A roadmap to address stress in graduate students: How to develop and disseminate a student-led single-session evidence based intervention.

Objective: This manuscript describes an evidence-based, student-led, single-session group intervention to support emotional wellbeing among graduate students. The present objective is to provide a roadmap for other universities. Participants: Key participants include clinical psychology graduate students (leader and workshop facilitators), faculty supervisor, representatives from receiving departments or schools, and institutional advocates. Methods: The two-hour workshop was based on four core transdiagnostic cognitive behavioral skills, including psychoeducation about emotions, mindful emotional awareness, cognitive flexibility, and behavior change. The workshop was designed and continues to be led by trained graduate students. Results: Key steps and lessons learned are presented for the exploration, preparation, implementation, and sustainment phases. Conclusions: This program has the potential to be flexibly replicated at other universities to assist with graduate student mental health. It provides unique supports for recipients and unique training opportunities for student facilitators.

Role of positive emotion regulation strategies in the association between childhood trauma and posttraumatic stress disorder among trauma-exposed individuals who use substances.

BACKGROUND: The co-occurrence of childhood trauma and posttraumatic stress disorder (PTSD) is highly prevalent and clinically significant. Existing research emphasizes the role of emotion regulation in the relation between childhood trauma and PTSD. Yet, research in this area has almost exclusively examined the influence of strategies aimed at regulating negative emotions, such as anger and sadness. OBJECTIVE: To extend existing research, the current study examined underlying roles of strategies for regulating positive emotions (i.e., self- and emotion-focused positive rumination and positive dampening) in the association between childhood trauma severity and PTSD symptoms. PARTICIPANTS AND SETTING: Participants were 320 trauma-exposed community individuals who reported past 30-day substance use (Mage = 35.78, 50.3% men, 81.6% white). METHOD: Analyses examined whether childhood trauma severity was indirectly related to PTSD symptoms through self-focused positive rumination, emotion-focused positive rumination, and positive dampening. RESULTS: Positive dampening, but not positive self- and emotion-focused positive rumination, indirectly explained associations between childhood trauma severity and PTSD symptoms (B = .17, SE = .03, 95% CI [.12, .24]). CONCLUSIONS: These findings highlight the potential utility of targeting positive dampening in the treatment of PTSD symptoms among individuals who use substances with a history of childhood trauma.

Comparison of echocardiographic measurements and cardiac biomarkers in healthy dogs eating nontraditional or traditional diets.

BACKGROUND: There has been a recent association between nontraditional diets and development of diet-associated dilated cardiomyopathy (DCM) in dogs. HYPOTHESIS/OBJECTIVES: To compare echocardiographic measurements and cardiac biomarkers between healthy dogs eating nontraditional vs traditional diets. We hypothesized that dogs eating nontraditional diets would have lower measures of systolic myocardial performance compared to dogs eating traditional diets. ANIMALS: Forty-six healthy dogs: 23 eating nontraditional diets and 23 eating traditional diets. METHODS: Prospective, cross-sectional study. Dogs were divided into groups based on diet ingredients. Dogs underwent 2-dimensional (2D), 3-dimensional (3D), and Doppler echocardiographic examinations and analysis of plasma N-terminal prohormone of B-type natriuretic peptide, serum cardiac troponin I, and whole blood and plasma taurine concentrations. RESULTS: Mean 2D ejection fraction (EF) was lower for dogs eating nontraditional diets (48.65 ± 7.42%) vs dogs eating traditional diets (56.65 ± 4.63%; P < .001; mean difference 8.0% [4.0%-12.0%] 95% confidence interval [CI]). Mean 3D EF was lower for dogs eating nontraditional diets (45.38 ± 7.35%) vs dogs eating traditional diets (57.58 ± 4.84%; P < .001; 12.0% [8.0%-16.0%] 95% CI). Mean 2D left ventricular end-systolic volumes, indexed to body weight, were significantly higher in dogs eating nontraditional diets (1.46 ± 0.08 mL/kg) vs dogs eating traditional diets (1.06 ± 0.08 mL/kg; P = .002; 0.4 mL/kg [0.18-0.62 mL/kg] 95% CI). CONCLUSIONS AND CLINICAL IMPORTANCE: Healthy dogs eating nontraditional diets had lower indices of systolic function and larger left ventricular volumes compared to dogs eating traditional diets. Screening of apparently healthy dogs eating nontraditional diets might allow for early detection of diet-associated DCM.

Bacterial genome reductions: Tools, applications, and challenges.

Bacterial cells are widely used to produce value-added products due to their versatility, ease of manipulation, and the abundance of genome engineering tools. However, the efficiency of producing these desired biomolecules is often hindered by the cells' own metabolism, genetic instability, and the toxicity of the product. To overcome these challenges, genome reductions have been performed, making strains with the potential of serving as chassis for downstream applications. Here we review the current technologies that enable the design and construction of such reduced-genome bacteria as well as the challenges that limit their assembly and applicability. While genomic reductions have shown improvement of many cellular characteristics, a major challenge still exists in constructing these cells efficiently and rapidly. Computational tools have been created in attempts at minimizing the time needed to design these organisms, but gaps still exist in modelling these reductions in silico. Genomic reductions are a promising avenue for improving the production of value-added products, constructing chassis cells, and for uncovering cellular function but are currently limited by their time-consuming construction methods. With improvements to and the creation of novel genome editing tools and in silico models, these approaches could be combined to expedite this process and create more streamlined and efficient cell factories.

Canadian clinical capacity for fetal alcohol spectrum disorder assessment, diagnosis, disclosure and support to children and adolescents: a cross-sectional study.

OBJECTIVE: Canadian fetal alcohol spectrum disorder (FASD) guidelines encourage an age-specific interdisciplinary diagnostic approach. However, there is currently no standard-of-care regarding FASD diagnosis disclosure and few studies document Canadian FASD clinical capacity. Our objectives were to describe clinical capacity (defined as skills and resources) for FASD assessment, diagnosis, disclosure and support in Canada. DESIGN, SETTING AND PARTICIPANTS: Data were drawn from the CanDiD study, a cross-sectional investigation of Canadian FASD clinical capacity. Forty-one clinics participated in the study. Data were collected in 2021 on the number and types of health professionals included in the assessment and diagnostic teams, the presence (or absence) of a minor patient when the FASD diagnosis is disclosed to parents/guardians, who is responsible for the diagnosis disclosure, the use of explanatory tools, and the types of support/counselling services available. The proportion of clinics that follow the Canadian interdisciplinary diagnostic guidelines by age group is described among participating clinics. RESULTS: Overall, 21, 13 and 7 specialised FASD clinics were in Western/Northern, Central and Atlantic Canada, respectively. The number of referrals per year surpassed the number of diagnostic assessments completed in all regions. Approximately, 60% of clinics who diagnosed FASD in infants and preschool children (n=4/7 and 15/25, respectively) followed the interdisciplinary guidelines compared with 80% (n=32/40) in clinics who diagnosed school-aged children/adolescents. Diagnostic reporting practices were heterogeneous, but most used an explanatory tool with children/adolescents (67%), offered support/counselling (90-95%) and used case-by-case approach (80%) when deciding who would disclose the diagnosis to the child/adolescent and when. CONCLUSIONS: Limited diagnostic capacity and lack of FASD resources across Canada highlights a critical need for continued FASD support. This study identifies gaps in assessment, diagnosis and reporting practices for FASD in children/adolescents across Canada.

Response and ongoing skills use following a single-session virtual cognitive behavioral workshop for graduate students.

OBJECTIVE: Graduate students frequently experience anxiety, depression, and psychological distress. Counseling centers struggle to meet this need. Brief, skills-based treatments to mitigate burgeoning or mild mental health problems could alleviate this problem. PARTICIPANTS: Participants were 51 graduate students in years one through seven of their respective programs. METHODS: We examined a single-session virtual cognitive behavioral workshop and outcomes up to 6-months later. RESULTS: The program was feasible, acceptable, and beneficial for mood, anxiety, and emotion regulation, even during the COVID-19 pandemic. A majority of participants reported ongoing skills use at follow-up. Primary barriers to more frequent use were forgetting, time constraints, and difficulty when experiencing strong emotions. Few participants endorsed expecting that skills would not be helpful or forgetting how to use skills. CONCLUSIONS: This intervention may provide scalable, much needed aid to graduate schools. Moreover, results highlight opportunities for further enhancing brief interventions.

What Is Your Diagnosis?

In collaboration with the American College of Veterinary Radiology.

Utilizing smartphone-based electrocardiography and thoracic radiography to evaluate cardiac function and morphology in geriatric Sika deer (Cervus nippon).

OBJECTIVE: To describe qualitative and quantitative cardiothoracic values in geriatric Sika deer (Cervus nippon) using digital radiography, 6-lead ECG (sECG), and smartphone-based ECG (aECG). ANIMALS: 10 healthy geriatric Sika deer (9 females and 1 male). PROCEDURES: Deer were chemically immobilized, thoracic radiographs were obtained, and inhalant anesthesia was initiated. An sECG and aECG were simultaneously recorded for each animal using the same ECG specifications. Results were compared between devices. RESULTS: Radiographically, no deer had any cardiopulmonary abnormalities. Median (range) values for the most important cardiac measurements were 170 (153-193) mm for cardiac height, 135 (122-146) mm for cardiac width, 9 (8-9) for vertebral heart score, and 99 (69-124) mm for cardiosternal contact. All deer had a normal sinus rhythm with no pathological arrhythmias noted. A significant difference between sECG and aECG was identified for minimum heart rate (49 vs 51 beats/min, respectively), P wave duration (0.05 vs 0.03 seconds), P wave amplitude (0.28 vs 0.10 mV), PR interval (0.15 vs 0.12 seconds), and QT interval (0.39 vs 0.30 seconds). CLINICAL RELEVANCE: Thoracic radiographs were suitable to evaluate basic cardiothoracic morphology in Sika deer. The aECG was useful for assessing heart rate and rhythm but, compared with sECG, proved no substitute for evaluating duration and amplitude of ECG waveforms.

Hemodynamic, Echocardiographic, and Sedative Effects of Oral Gabapentin in Healthy Cats.

The study objective was to evaluate sedative, hemodynamic, and echocardiographic effects of cats receiving single-dose, oral gabapentin. A prospective, double-blinded, placebo-controlled, crossover study was conducted with 10 client-owned cats. Vital parameters, physical exam, blood pressure, echocardiography, and sedation scoring were performed at each visit within 2 hr of receiving either a placebo or gabapentin capsule. Vital parameters, blood pressure recordings, and echocardiographic measurements were compared between baseline, gabapentin, and placebo; interobserver agreement for sedation scoring and correlation between variables were also evaluated. Seven of 10 cats exhibited mild sedation within 120 min after receiving gabapentin, and no adverse events occurred. Significant differences were detected with two-dimensional fractional shortening (P = .022), left ventricular internal diameter in systole using M-mode (P = .014), and left atrial volume (P < .0001). Interobserver agreement for sedation scoring was near-perfect (κ = 0.84). No significant correlation was found for gabapentin dosage and sedation score. Single-dose oral gabapentin is well tolerated in healthy cats and produces a modest decrease in several echocardiographic parameters of systolic function; however, all affected variables remained within established reference ranges. These results suggest gabapentin may be an appropriate sedative to administer before echocardiography in cats necessitating mild sedation.

Investigation of the short-term effects of a transdermal formulation of atenolol in healthy cats.

OBJECTIVE: To investigate associations between short-term treatment with a previously described compounded transdermal formulation of atenolol and heart rate in cats. ANIMALS: 11 healthy adult cats. PROCEDURES: Cats received the atenolol gel formulation (gradually increased from 12.5 mg/cat, q 24 h to 25 mg/cat, q 12 h) by application to the pinnae at home over a 10-day period in a prospective, experimental study. On day 10, cats were hospitalized for measurement of serum atenolol concentrations 3, 6, and 12 hours after the morning treatment. Mean heart rate measured at the 3- and 6-hour time points was compared with a baseline value (measured at enrollment). RESULTS: All cats completed the study; 4 were excluded from analyses after an apparent formulation error was detected in 1 batch. Two cats had minor adverse effects (localized erythema of the pinna). Five of 7 cats had serum atenolol concentrations ≥ 260 ng/mL (considered therapeutic) at ≥ 1 time point. Heart rate had a strong negative correlation (r = -0.87) with serum atenolol concentration. A 90-day drug stability investigation of 4 formulations (identical to the intended study treatment except for pH [range, 6.5 to 7.7]) revealed an apparent decrease in atenolol concentration at a pH of 7.7. CONCLUSIONS AND CLINICAL RELEVANCE: Topical administration of the formulation as described resulted in targeted serum atenolol concentrations in most cats, with attendant HR reduction. Validation of these preliminary results in a larger sample and investigation of the treatment in cats with structural heart disease is needed. Verification of appropriate pH (target, 7.0) is likely essential for the compound's stability.

Targeted modulation of E3 ligases using engineered ubiquitin variants.

Ubiquitination plays an essential role in signal transduction to regulate most if not all cellular processes. Among the enzymes that are involved in the ubiquitin (Ub) signaling cascade, tremendous efforts have been focused on elucidating the roles of E3 Ub ligases as they determine the complexity and specificity of ubiquitination. Not surprisingly, the malfunction of E3 ligases is directly implicated in many human diseases, including cancer. Therefore, there is an urgent need to develop potent and specific molecules to modulate E3 ligase activity as intracellular probes for target validation and as pharmacological agents in preclinical research. Unfortunately, the progress has been hampered by the dynamic regulation mechanisms for different types of E3 ligases. Here, we summarize the progress of using protein engineering to develop Ub variant (UbV) inhibitors for all major families of E3 ligases and UbV activators for homologous with E6-associated protein C terminus E3s and homodimeric RING E3s. We believe that this provides a general strategy and a valuable toolkit for the research community to inhibit or activate E3 ligases and these synthetic molecules have important implications in exploring protein degradation for drug discovery.

The pain of grief: Exploring the concept of psychological pain and its relation to complicated grief, depression, and risk for suicide in bereaved adults.

OBJECTIVE: Emotional or psychological pain is a core symptom of complicated grief (CG), yet its correlates are largely unexamined among bereaved individuals. METHOD: Bereaved adults (N = 135) completed self-reports regarding psychological pain, CG, depression, and suicidality. We assessed correlations among these variables and tested whether psychological pain was elevated among individuals with CG and individuals with current or past suicidal thoughts and behaviors. Using logistic regression, we also assessed psychological pain, depression, and CG symptom severity as predictors of suicide risk. RESULTS: Psychological pain was strongly associated with both CG and depression severity and was elevated among subjects reporting current or past suicidality. CG and depression were not statistically significant predictors of suicidal ideation after accounting for the effects of psychological pain. CONCLUSIONS: Psychological pain is strongly associated with bereavement-related psychopathology and warrants further investigation in studies examining the nature and treatment of CG.

"Identity confusion in complicated grief: A closer look": Correction.

Reports an error in "Identity confusion in complicated grief: A closer look" by Benjamin W. Bellet, Nicole J. LeBlanc, Marie-Christine Nizzi, Mikaela L. Carter, Florentine H. S. van der Does, Jacqueline Peters, Donald J. Robinaugh and Richard J. McNally (Journal of Abnormal Psychology, 2020[May], Vol 129[4], 397-407). In the original article, the following acknowledgment of funding was missing from the author note: "Donald J. Robinaugh's work on this article was supported by federal funding from the National Institute of Mental Health (Grant 1K23MH113805-01A1; principal investigator: Donald J. Robinaugh)." The online version of this article has been corrected. (The following abstract of the original article appeared in record 2020-23551-001). Complicated grief (CG) is characterized by a wide range of symptoms, including identity confusion or a sense that a part of oneself has died with the decedent. Although identity confusion is a commonly reported feature of CG, little is known about which specific aspects of self-concept are compromised. In the current study, we used qualitative coding methods to investigate which aspects of the sense of self differed between those with and without CG in a sample of 77 bereaved adults. Relative to individuals without CG, those with CG provided fewer descriptors of their self-concept overall (lower self-fluency), provided sets of descriptors that consisted of fewer categories (lower self-diversity), and had lower proportions of self-relevant preferences and activities. However, group differences were not observed for proportions of any other categories of self-concept descriptors, including references to the loss, the past, or distress-related self-statements. Directions for future research and clinical implications are discussed. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Identity confusion in complicated grief: A closer look.

Complicated grief (CG) is characterized by a wide range of symptoms, including identity confusion or a sense that a part of oneself has died with the decedent. Although identity confusion is a commonly reported feature of CG, little is known about which specific aspects of self-concept are compromised. In the current study, we used qualitative coding methods to investigate which aspects of the sense of self differed between those with and without CG in a sample of 77 bereaved adults. Relative to individuals without CG, those with CG provided fewer descriptors of their self-concept overall (lower self-fluency), provided sets of descriptors that consisted of fewer categories (lower self-diversity), and had lower proportions of self-relevant preferences and activities. However, group differences were not observed for proportions of any other categories of self-concept descriptors, including references to the loss, the past, or distress-related self-statements. Directions for future research and clinical implications are discussed. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Shame, guilt, and pride after loss: Exploring the relationship between moral emotions and psychopathology in bereaved adults.

BACKGROUND: Self-blame following bereavement has been implicated in the development of post-loss psychopathology. However, prior studies have not distinguished between the emotions of shame versus guilt. This study examined the cross-sectional associations among bereavement-related shame, bereavement-related guilt, and two mental disorders that commonly arise after bereavement: complicated grief and depression. In addition, exploratory analyses examined the associations between bereavement-related pride and post-loss psychopathology. METHODS: Participants included 92 bereaved adults who experienced the death of a family member at least one year prior to the study. Participants completed self-report measures of complicated grief symptoms, depression symptoms, shame, guilt, and pride. RESULTS: Shame and guilt were positively correlated with complicated grief and depression symptoms. When controlling for their shared variance, only shame remained a significant predictor of post-loss psychopathology. Follow-up analyses indicated that the effect of guilt on psychopathology depended on the level of shame, and vice versa. At low shame, guilt predicted psychopathology; however guilt did not predict psychopathology at moderate to high shame. At low to moderate guilt, shame predicted psychopathology; however shame did not predict psychopathology at high guilt. Pride negatively predicted depression symptoms, but not complicated grief symptoms, when we controlled for shame and guilt. LIMITATIONS: Limitations include the cross-sectional design and modest sample size. CONCLUSIONS: Our analyses identify shame as the more pathogenic moral emotion for bereaved adults. However, whereas guilt in the absence of shame is often considered adaptive, we found that guilt predicted greater psychological distress at low levels of shame in this sample.

Comparison of left and right atrial volumes determined by two- and three-dimensional echocardiography with those determined by multidetector computed tomography for healthy dogs.

OBJECTIVE: To compare left atrial volume (LAV) and right atrial volume (RAV) determined by 2-D and 3-D echocardiographic methods with the LAV and RAV determined by ECG-gated multidetector CT (MDCT) for healthy dogs. ANIMALS: 11 healthy purpose-bred young adult hound-type dogs. PROCEDURES: Each dog was anesthetized and underwent MDCT and a complete echocardiographic examination. Modality-specific software was used to measure the respective atrial volumes at ventricular end systole, and LAV and RAV measurements were subsequently indexed to body weight and compared among imaging modalities. RESULTS: The LAV determined by echocardiographic methods did not differ significantly from the LAV determined by MDCT. However, the RAV determined by 3-D echocardiography and 2-D echocardiography via the left apical and left cranial windows differed significantly from the RAV determined by MDCT. Bland-Altman analyses indicated that the indexed LAV and RAV determined by echocardiographic methods were systematically underestimated, compared with MDCT measurements, but the bias was much smaller for LAV than for RAV. CONCLUSIONS AND CLINICAL RELEVANCE: Results suggested that, for dogs, echocardiography might be an acceptable alternative to MDCT for measurement of LAV but not for measurement of RAV. However, the study population was small and homogenous in terms of breed, age, and weight. These findings need to be validated in a larger, more varied population of dogs with and without cardiac disease.

Facets of Mindfulness in Adults with Generalized Anxiety Disorder and Impact of Co-occurring Depression.

Anxiety and depressive symptoms are associated with lower levels of mindfulness, yet few studies to date have examined facets of mindfulness in adults with Generalized Anxiety Disorder (GAD). In this study, we examined differences in mindfulness between individuals with GAD with and without concurrent Major Depressive Disorder (MDD) and/or Dysthymic Disorder (DD). We also examined the associations of anxiety and depressive symptoms with facets (subscales) of mindfulness. We hypothesized that individuals with primary GAD and co-occurring MDD/DD would exhibit lower mindfulness than those without a concurrent depressive disorder. We also hypothesized that mindfulness would be negatively correlated with worry and depressive symptom severity. Subjects were 140 adults (M (SD) age = 33.4 (12.9); 73% female) with a primary diagnosis of GAD; 30.8% (n = 43) also met criteria for current MDD/DD as determined by a structured clinical interview for DSM-IV. Current worry and depressive symptoms were assessed using self-report measures at baseline of a 12-week treatment study. Individuals with GAD and co-occurring MDD/DD exhibited significantly lower mindfulness than those without a depressive disorder diagnosis and specifically lower scores on the Awareness sub-scale compared to individuals with primary GAD and no comorbid depression. In terms of the dimensional impact of worry and depression ratings, depression symptoms independently predicted lower Awareness scores and worry independently predicted lower levels of Nonreacting and Nonjudging sub-scales. This may have direct treatment implications.