Prolonged Restraint Research Articles

T Cell-Induced Colitis Is Exacerbated by Prolonged Stress: A Comparison in Male and Female Mice.

Psychological stress exposure is well recognized to exacerbate inflammatory bowel disease (IBD) but the mechanisms involved remain poorly understood. In this study, chronic T cell-mediated colitis was induced by adoptively transferring CD4+CD45RBhigh splenic T cells from C57BL/6 WT donor mice into Rag1tm1Mom mice. Two weeks after T cell transfer, mice were exposed to a prolonged restraint stressor (RST) for 8 h per day for 6 consecutive days. The colitis phenotype was assessed via histopathology and semi-quantitative rt-PCR at humane endpoints or 10 weeks post-T-cell transfer. Mice that received the T cell transplant developed chronic colitis marked by increases in colonic histopathology and inflammatory cytokines. Colonic histopathology was greater in males than females regardless of RST exposure but RST exposure increased histopathology scores in females such that they reached scores observed in the males. This pattern was consistent with cytokine gene expression and protein levels in the colon (especially for IFN-γ, IL-17A, and TNF-α). Serum cytokine levels were not strongly affected by exposure to the stressor. Using a murine model of chronic T cell-mediated colitis, this study demonstrates that biological sex strongly influences colonic inflammation and exposure to chronic stress has a more pronounced effect in females than in males.

Capture myopathy

Capture myopathy is a condition that manifests after prolonged pursuit, entrapment, restraint, live-stranding and/or transport. Its effects are wide-ranging and often life-threatening. All wild animals are susceptible to this condition, though particular species seem to be predisposed. A diagnosis of capture myopathy revolves around the animal’s natural and individual history as well as any clinical signs, although, in many cases, a definitive diagnosis cannot be made or is only determined post-mortem. Successful management often relies on aggressive fluid support, pain management and physical therapy.

Acclimation Protocol to Minimize Stress inImmobilized Rats During Non-Invasive Multimodal Sensing ofthe Autonomic Nervous System.

Rodent models are often used in spinal cord injury investigations to measure physiological parameters but require rats to be restrained during data collection to prevent motion and stress-induced artifacts. A 4-week acclimation protocol was developed to reduce sympathetic activity during experimentation to collect clean data. Physiological parameters were analyzed throughout the acclimation protocol using surface-based electrodes and an implanted sensor. The sensor was used to extract systolic blood pressure, skin nerve activity, and heart rate variability parameters. Our protocol exposed a minimal increase in sympathetic activity during experimentation despite long periods of restraint. The data suggest that the acclimation protocol presented successfully minimized changes in physiological parameters because of prolonged restraint. This is necessary to ensure that physiological recordings are not affected by undue stress because of the process of wearing the sensor. This is important when determining the effects of stress when studying dysautonomia after spinal cord injury, Parkinson's disease, and other neurological disorders.

Dual Cannabinoid and Orexin Regulation of Anhedonic Behaviour Caused by Prolonged Restraint Stress.

The endocannabinoid and orexin systems share many biological functions, including wakefulness, stress response, reward processing, and mood. While these systems work against one another with respect to arousal, chronic stress-induced downregulation of both systems often leads to anhedonia or the inability to experience pleasure from natural rewards. In the current study, a 24 h restraint stress test (24 h RST) reduced sucrose preference in adult male and female C57BL/6 mice. Prior to the stressor, subsets of mice were intraperitoneally administered cannabinoid and orexin receptor agonists, antagonists, and combinations of these drugs. Restraint mice that received the cannabinoid receptor type 1 (CB1R) antagonist SR141716A, orexin receptor type 2 (OX2R) agonist YNT-185, and the combination of SR141716A and YNT-185, exhibited less anhedonia compared to vehicle/control mice. Thus, the 24 h RST likely decreased orexin signaling, which was then restored by YNT-185. Receptor colocalization analysis throughout mesocorticolimbic brain regions revealed increased CB1R-OX1R colocalization from SR141716A and YNT-185 treatments. Although a previous study from our group showed additive cataleptic effects between CP55,940 and the dual orexin receptor antagonist (TCS-1102), the opposite combination of pharmacological agents proved additive for sucrose preference. Taken together, these results reveal more of the complex interactions between the endocannabinoid and orexin systems.

PS-BPC09-5: THE RELATIONSHIP BETWEEN CHANGES IN EXERCISE HABITS, PHYSICAL FUNCTION, AND PSYCHOLOGICAL STATUS IN OLDER PATIENTS WITH HYPERTENSION

Objective: Self-restraint from activities due to the COVID-19 pandemic has limited the range of activities and interpersonal relationships for older persons. Moreover, prolonged restraint has been reported to increase the risk of frailty and sarcopenia. Therefore, we examined the effects of changes in exercise habits on physical function and psychological status of older patients with hypertension throughout their self-restraint lifestyle from 2020 to 2022 in the 1-year follow-up study. Design and Methods: Participants were patients with hypertension aged 65 years or older attending outpatient clinics at our institution who could obtain information on exercise habits, history of falls, comprehensive geriatric assessment, and muscle strength. We conducted the same survey in the first year and one year later. The subjects were classified into four groups by combining their exercise habits in the first year with or without one year later. That is Group A: with exercise habits at both times of the survey; Group B: with exercise habits in the first year and without exercise habits one year later; Group C: without exercise habits in the first year and with exercise habits one year later; and Group D: without exercise habits at both times of the survey. Written consent forms were obtained from all participants. Our institutional review board approved the study protocol. Results: The study participants were 183 patients (Group A: 119, Group B: 26, Group C: 17, Group D: 21). The age of the participants was 76.1 ± 5.5 years, 82 (44.8%) were male, and the duration of hypertension was 18.4 ± 11.5 years. Changes in exercise habits were not associated with physical function, history of falls, and comprehensive geriatric assessment at one year. However, when the results were examined separately for men and women, the geriatric depression scale was significantly higher in women in Group B (Dunnett test, p = 0.0094) than in Group A, suggesting that the tendency toward depression had progressed. Group B women also had more falls one year later (chi-square 12.04, p = 0.0072). Conclusions: In a 1-year follow-up study during the COVID-19 pandemic, a relatively high proportion of older patients with hypertension attending our hospital maintained their exercise habits, but 14% of cases lost their exercise habits. Only women showed the development of depression and increased risk of falls when exercise habits were lost. Women were more susceptible to the effects of environmental changes than men in older patients with hypertension.

Multiple health benefits of tulsi plants

Ayurveda's focus on healthy lifestyle practices and the regular consumption of adaptogenic herbs can address many of the major causes of global morbidity and mortality. Ayurvedic practitioners highly regard Tulsi (Ocimum sanctum Linn), and scientific research has confirmed its benefits. With its unique combination of pharmacological actions, tulsi has demonstrated its ability to address physical, chemical, metabolic, and psychological stress. There is evidence that tulsi protects organs and tissues against chemical and physical stress resulting from prolonged physical exertion, ischemia, physical restraint, excessive noise, and cold exposure. In addition to its beneficial effects on memory and cognitive functions as well as its anxiolytic and antidepressant properties, tulsi can counter metabolic stress, lowering blood glucose, blood pressure, and oxidized cholesterol levels. Due to its broad-spectrum antimicrobial activity, including activity against human and animal pathogens, tulsi can be used in treating wounds, animal rearing, preserving food and herbal raw materials, and traveller's health as well as hand sanitizers, mouthwashes and water purifiers. Plants grown for tulsi have spiritual significance and practical value, allowing growers to tap into nature's creative powers. Organic cultivation enables farmers to address food security issues, rural poverty, hunger and environmental degradation. Using ancient knowledge, tulsi is considered a symbol of wisdom in Ayurvedic medicine. Additionally, the Tulsi plant's roots, stem, fruit, and leaves have several phytochemical constituents that impart different therapeutic properties. Eugenol, vallinin, gallic acid, palmitic acid, oleic acid, and linoleic acid are some of these constituents. Many diseases can be treated with these phytochemicals extracted from plants. Tulsi is reported to have anti-ulcer, antioxidant, anti-inflammatory, anti-cancer, anti-diabetic, anti-arthritic, analgesic, anti-stress, anti-asthmatic, antifertility, Immunomodulation, and neuroprotective properties.

Prone restraint cardiac arrest in in-custody and arrest-related deaths.

We postulate that most atraumatic deaths during police restraint of subjects in the prone position are due to prone restraint cardiac arrest (PRCA), rather than from restraint asphyxia or a stress‐induced cardiac condition, such as excited delirium. The prone position restricts ventilation and diminishes pulmonary perfusion. In the setting of a police encounter, metabolic demand will be high from anxiety, stress, excitement, physical struggle, and/or stimulant drugs, leading to metabolic acidosis and requiring significant hyperventilation. Although oxygen levels may be maintained, prolonged restraint in the prone position may result in an inability to adequately blow off CO2, causing blood pCO2 levels to rise rapidly. The uncompensated metabolic acidosis (low pH) will eventually result in loss of myocyte contractility. The initial electrocardiogram rhythm will generally be either pulseless electrical activity (PEA) or asystole, indicating a noncardiac etiology, more consistent with PRCA and inconsistent with a primary role of any underlying cardiac pathology or stress‐induced cardiac etiology. We point to two animal models: in one model rats unable to breathe deeply due to an external restraint die when their metabolic demand is increased, and in the other model, pressure on the chest of rats results in decreased venous return and cardiac arrest rather than death from asphyxia. We present two cases of subjects restrained in the prone position who went into cardiac arrest and had low pHs and initial PEA cardiac rhythms. Our cases demonstrate the danger of prone restraint and serve as examples of PRCA.

Comparison of point-of-care NOVA CCX blood gas analyzer to laboratory analyzer in a population of healthy adult cats.

To compare the level of agreement of measurement of analytes (sodium, chloride, potassium, urea nitrogen [UN], creatinine, glucose) in a population of healthy adult cats between the point-of-care (POC) analyzer and laboratory analyzer. To establish reference intervals for the POC analyzer in healthy adult cats. Prospective observational study. University teaching hospital. Fifty-five cats were screened. Seven cats were excluded due to aggression that prohibited phlebotomy, and 1 cat was excluded due to prolonged restraint; 47 cats were enrolled. None. In this patient population, reference intervals for the POC analyzer were calculated: sodium 145-157mmol/L; chloride 116-124mmol/L; potassium 3.4-5.5mmol/L; UN 5.71-13.9mmol/L (16-39mg/dl); creatinine 74.3-189.2mmol/L (0.84-2.14mg/dl); and glucose 4-11.8mmol/L (72-213mg/dl). Comparison between the POC analyzer and laboratory analyzer using the Bland-Altman method was performed. The bias for each analyte is as follows: sodium 1.55mmol/L; chloride 0.99mmol/L; potassium 0.21mmol/L; UN -0.25mmol/L (-0.7mg/dl); creatinine 9.73mmol/L (0.11mg/dl); and glucose 0.5mmol/L (9.79mg/dl). Reference intervals for each analyte were similar to other chemistry analyzers. There was no significant difference between the POC and laboratory analyzers in analysis of UN, with a statistically significant difference observed with sodium, potassium, chloride, creatinine, and glucose. However, the values are likely not sufficiently different to alter initial clinical decisions regarding patient care.

Plasma steroids and immune measures vary with restraint duration in a toad (Rhinella icterica)

Immunoenhancing effects have been widely described following acute stressors in several vertebrates, and valuable contributions have been made from studies on acute stress to understand hormonal-immune interactions. However, most studies focus on hormonal and immune responses after standardized time lapses, neglecting potential influence of duration of exposition to stressor. Herein, we investigate fluctuations of plasma hormone concentrations (corticosterone and testosterone) and immunity (neutrophil to lymphocyte ratio, phagocytosis of blood cells, and plasma bacterial killing ability) in a toad species (Rhinella icterica) in response to six different periods of exposure to restraint stress. We observed increased plasma corticosterone concentrations following restraint in all sampled times (0.5 to 48 h), with the highest values being observed during the first hour (0.5 to 1 h). Restraint-induced increases in the neutrophil to lymphocyte ratio and phagocytosis percentage were observed from the first 0.5 h, gradually increasing after that with the time of restraint. We also observed decreased testosterone plasma concentrations in response to a more prolonged restraint (24 and 48 h). No changes were observed in plasma bacterial killing ability following restraint. Together, our results demonstrate dynamic time-related hormonal and immune changes. These results point to the fact that for some species measuring hormonal and immune variables at single time points following a stressor might work better when preceded by a study of the temporal changes of the response variables to the stimuli applied. Also, time of response needs to be considered when different variables are used as proxies of stress.

Factors associated with prolonged episodes of mechanical restraint in mental health hospitalization units in Andalusia.

WHAT IS KNOWN ON THE SUBJECT?: Risk factors associated with prolonged episodes of mechanical restraint and other coercive measures are understudied. There have been no studies of this phenomenon in the context of the Andalusian public health system. Knowledge about factors associated with prolonged episodes is essential to increase the understanding of this phenomenon and develop strategies to reduce its occurrence. WHAT DOES THIS PAPER ADD TO EXISTING KNOWLEDGE?: In Andalusia, prolonged restraint is still frequent and varies depending on the unit. It is associated with less time since admission, male gender, diagnosis, reason for restraint and the shift on which it was initiated. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: Interventions at the level of the units could be necessary to prevent prolonged episodes of mechanical restraint. The results suggest the need for stricter control during the shifts on which restraint starts, especially in the first days after the patient's admission. Preventive risk assessment considering clinical and sociodemographic risk factors could help to reduce prolonged restraint. ABSTRACT: Introduction Factors associated with prolonged episodes of mechanical restraint and other coercive interventions are not clearly established and have been not studied in Andalusia (Spain). Aim To study factors associated with prolonged episodes of mechanical restraint. Method We analysed retrospectively episodes of mechanical restraint (N=6267, prolonged episode >9.5hours) in all public mental health hospitalization units (N=20, 535 beds) that offer health coverage for the autonomous community of Andalusia. The data came from clinical records. A multivariable mixed logistic regression was used. Results In Andalusia, prolonged restraint is still frequent and varies depending on the unit. It is associated with less time since admission, male gender, diagnosis, reason for restraint and the shift on which it was initiated. Discussion The results provide evidence that prolonged episodes largely depend on the unit where they occur and that stricter control and regulation are necessary to prevent prolonged episodes. Implications for practice Interventions at the level of the unit are necessary. Stricter control in the shifts during which there is more risk of prolonged restraint may be necessary, especially in the first days following admission.

Evaluation of the ventilatory effects on human subjects in prolonged hip-flexed/head-down restraint position.

The restraint chair is a tool used by law enforcement and correction personnel to control aggressive, agitated individuals. When initiating its use, subjects are often placed in a hip-flexed/head-down (HFHD) position to remove handcuffs. Usually, this period of time is less than two minutes but can become more prolonged in particularly agitated patients. Some have proposed this positioning limits ventilation and can result in asphyxia. The aim of this study is to evaluate if a prolonged HFHD restraint position causes significant ventilatory compromise. Subjects exercised on a stationary bicycle until they reached 85% of their predicted maximal heart rate. They were then handcuffed with their hands behind their back and placed into a HFHD seated position for five minutes. The primary outcome measurement was maximal voluntary ventilation (MVV). This was measured at baseline, after initial placement into the HFHD position, and after five minutes of being in the position while still maintaining the HFHD position. Baseline measurements were compared with final measurements for statistically significant differences. We analyzed data for 15 subjects. Subjects had a mean MVV of 165.3 L/min at baseline, 157.8 L/min after initially being placed into the HFHD position, and a mean of 138.7 L/min after 5 min in the position. The mean baseline % predicted MVV was 115%; after 5 min in the HFHD position the mean was 96%. This 19% absolute difference was statistically significant (p = 0.001). In healthy seated male subjects with recent exertion, up to five minutes in a HFHD position results in a small decrease in MVV compared with baseline MVV levels. Even with this decrease, mean MVV levels were still 96% of predicted after five minutes. Though a measurable decrease was found, there was no clinically significant change that would support that this positioning would lead to asphyxia over a five-minute time period.

Effects of simulated prolonged restrained sitting on physical and physiological states

Introduction: Advancement in aerospace technology, and resultant change in operational capabilities has posed unique challenges on the aircrew, who is required to operate for prolonged periods seated and restrained. Examination of the effects of prolonged restrained sitting on physical and physiological states was the desired objective of the study. Material and Methods: Longitudinal evaluation of subjective appreciation of physical discomfort and pain, and physiological parameters, namely, heart rate (HR), blood pressure (BP), oxygen saturation (SpO2), skin temperature, and calf girth changes across 6-h of simulated prolonged restrained sitting was undertaken among 15 healthy male non aircrew volunteers with mean age of 31.2 ± 3.63 years. Subjective discomfort was assessed by Category Partitioning Scale (CPS) and pain by Short-Form McGill Pain Questionnaire (SF-MPQ). Results: Prolonged restraint sitting of 6-h resulted in a significant increase in calf girth. Significant changes were also observed in CPS and SF-MPQ scores indicating an increase perception of discomfort and pain. Changes in HR, MAP, SpO2, and lower limb skin temperature were also observed even though these changes were lower in magnitude. Conclusion: The pain and discomfort following 6-h of prolonged restraint sitting were found to be appreciable by the subjects. This, along with a significant change in the calf circumference and other physiological parameters were possibly due to effects of venous pooling as a result of sitting for prolonged periods. The effects so observed could have potential flight safety implications and affect mission effectiveness. However, these findings need to be examined in actual cockpit conditions where the seat is more ergonomically designed; yet the aircrew is subjected to a wide spectrum of additional aeromedical stressors.

Successful Treatment of Capture Myopathy and Satellite Transmitter Injury in an Atlantic Yellow-nosed Albatross (Thalassarche chlororhynchos)

An Atlantic yellow-nosed albatross (Thalassarche chlororhynchos) was found on shore 3 days after having been captured at sea by researchers. It presented very lethargic, moderately dehydrated, and in poor body condition. It was mildly hypothermic, with moderate pediculosis, and dark malodorous feces with yellow urates. The bird had a 48-g satellite transmitter attached with a backpack-style chest harness, which caused an ulcerative lesion on the interscapular area. The bird was severely anemic (packed cell volume, 18%), and plasma chemistry results were suggestive of a severe rhabdomyolysis (aspartate transaminase, 3620 U/L; creatine kinase, 100 400 U/L). We hypothesized that capture myopathy occurred because of a combination of capture stress and prolonged physical restraint by researchers, stress associated with repeated attempts by the bird to remove the satellite-transmitter harness, and a lengthy road transport to the rehabilitation center. A treatment protocol, which relied on a combination of aggressive fluid therapy, selenium, vitamins E and B12, and multivitamin supplementation, was administered after the initial physical assessment of the albatross. Isoflurane inhalation anesthesia was used to minimize stress associated with the performed medical procedures (eg, physical examination, removal of the satellite transmitter harness, blood collection, and wound management). Measures were adopted while the bird was hospitalized to reduce stress (eg, quiet and comfortable environment with visual barriers and restricting handling of the patient to experienced staff). Clinical and hematological monitoring was used to assess the patient's condition as the bird gradually recovered while hospitalized. The albatross was successfully released 28 days after the initial presentation, suggesting that the medical protocol employed in this case may be useful for the treatment of capture myopathy in albatrosses and other birds.

SGK1 knockdown in the medial prefrontal cortex reduces resistance to stress-induced memory impairment

Down-regulation of serum and glucocorticoid-regulated kinase1 (SGK1) expression has been reported in the postmortem prefrontal cortex (PFC) of subjects with post-traumatic stress disorder. Furthermore, experimental treatments that reduce SGK1 function in the medial prefrontal cortex (mPFC) cause depressive-like behaviors and synaptic dysfunction. Therefore, we examined the effect of SGK1 down-regulation in the mPFC on resistance to stress-induced cognitive impairment. Rats with viral-mediated knockdown of SGK1 in the mPFC were subjected to either a brief 20-min restraint plus 20 intermittent tail shocks or a prolonged 60-min restraint plus 60 intermittent tail shocks, after which their performance in an object recognition task was assessed. Recognition memory remained intact in control rats following the brief stress, but was impaired in rats with SGK1 knockdown in the mPFC. Prolonged stress impaired recognition memory in both control rats and rats with SGK1 knockdown. Our findings indicate that altered mPFC SGK1 signaling is a potential mechanism for resistance to stress-induced cognitive impairment.

Brief stress impairs recognition memory through amygdalar activation in animals with medial prefrontal cortex lesions

The medial prefrontal cortex (mPFC) is thought to exert inhibitory control over stress-induced activation of the amygdala and neurocognitive effects. As evidence to support this, we examined how exposure to either a brief or prolonged stress affected on amygdalar c-Fos levels and recognition memory of animals with mPFC chemical lesions. mPFC-lesioned and sham-operated animals were subjected to either a brief 20-min restraint+20 tailshocks or a prolonged 60-min restraint+60 tailshocks. Post-stress performances in the object recognition memory and c-Fos immunoreactivity in the amygdala were then assessed. In sham-operated animals, the object recognition memory was reliably impaired following the prolonged, but not following the brief stress exposure. On the other hand, in mPFC-lesioned animals, the brief stress significantly impaired recognition memory and enhanced c-Fos expression in the amygdala. Present findings of loss of mPFC activity exacerbating stress effects provide causal evidence that the mPFC exerts inhibitory control on stress.

Eating disorders and the environmental regulation of the genome. FAED, Eating Disorders Program

Accumulating evidence supports the view that eating-disorder (ED) etiology involves the environmental regulation of genetic potentials. This presentation reviews findings from recent molecular-genetic studies that implicate genetic effects acting upon psychiatric, metabolic, and immune components in ED phenomenology. It also reviews findings from epigenetic studies that suggest, intriguingly, that a parallel array of genes may be subject to environmental regulation via epigenetic effects–resulting from perinatal, childhood and later-life stresses and (according to preliminary evidence from our lab) reversible effects owing to prolonged dietary restraint. Although the available genetic and epigenetic data are in too-nascent a state to guide innovations in treatment, findings frame a multifactorial conceptualization of ED etiopathology that helps reduce stigmatizing misconceptions, and promotes self-acceptance on the part of affected people.

Effects of stress and cortisol on the polarization of carp macrophages

In teleost fish, myelopoiesis is maintained both in the head (HK) and trunk kidney (TK), but only the HK holds the endocrine cells that produce the stress hormone cortisol. We now compared the effects of prolonged restraint stress (in vivo) and cortisol (in vitro) on the polarization of HK and TK-derived carp macrophages.Monocytes/macrophages from both sources were treated in vitro with cortisol, lipopolysaccharide or with both factors combined. In vivo, fish were challenged by a prolonged restraint stress. Gene expression of several markers typical for classical M1 and alternative M2 macrophage polarization, as well as glucocorticoid receptors, were measured.Cells from both sources did not differ in the constitutive gene expression of glucocorticoid receptors, whereas they significantly differed in their response to cortisol and stress. In the LPS-stimulated HK monocytes/macrophages, cortisol in vitro counteracted the action of LPS while the effects of cortisol on the activity of TK monocytes/macrophages were less explicit.In vivo, restraint stress up-regulated gene expression of M2 markers in freshly isolated HK monocytes/macrophages, while at the same time it did not affect TK monocytes/macrophages. Moreover, LPS-stimulated HK monocytes/macrophages from stressed animals showed only minor differences in the gene expression of M1 and M2 markers, compared to LPS-treated monocytes/macrophages from control fish. In contrast, stress-induced changes in TK-derived LPS-treated cells were more pronounced. However, these changes did not clearly indicate whether in TK monocytes/macrophages stress will stimulate classical or alternative polarization.Altogether, our results imply that cortisol in vitro and stress in vivo direct HK, but not TK, monocytes/macrophages to the path of alternative polarization. These findings reveal that like in mammals, also in fish the glucocorticoids form important stimulators of alternative macrophage polarization.

Protocol for a Randomized Controlled Trial of CI Therapy for Rehabilitation of Upper Extremity Motor Deficit: The Bringing Rehabilitation to American Veterans Everywhere Project.

Constraint-induced movement therapy (CI therapy) has been shown to reduce disability for individuals with upper extremity (UE) hemiparesis following different neurologic injuries. This article describes the study design and methodological considerations of the Bringing Rehabilitation to American Veterans Everywhere (BRAVE) Project, a randomized controlled trial of CI therapy to improve the motor deficit of participants with chronic and subacute traumatic brain injury. Our CI therapy protocol comprises 4 major components: (1) intensive training of the more-affected UE for target of 3 hour/day for 10 consecutive weekdays, (2) a behavioral technique termed shaping during training, (3) a "transfer package," 0.5 hour/day, of behavioral techniques to transfer therapeutic gains from the treatment setting to the life situation, and (4) prolonged restraint of use of the UE not being trained. The primary endpoint is posttreatment change on the Motor Activity Log, which assesses the use of the more-affected arm outside the laboratory in everyday life situations. Data from a number of secondary outcome measures are also being collected and can be categorized as physical, genomic, biologic, fitness, cognitive/behavioral, quality of life, and neuroimaging measures.

Measuring the Welfare Impact of Soft-Catch Leg-Hold Trapping for Feral Cats on Non-Target By-Catch.

Simple SummaryFeral cats are linked to fauna extinctions and declines globally through predation, disease transmission, and hybridisation. Soft-catch leg-hold trapping, with or without olfactory lures, is used to capture feral cats; however, by-catch may occur, including species of conservation concern. Using data from 431 non-target animals trapped at six Western Australian sites over 18 years, we demonstrate that birds are at greatest risk of serious injury. Appropriate placement of traps, careful choice of lures depending on the non-target species known to be in the study area, adjustment of traps to minimize the chance of closing on small animals, and training of all personnel associated with trapping will minimize the risk to birds and other non-target fauna.To inform trapping protocols to reduce by-catch while trapping feral cats by-catch welfare costs should be quantified. During cat trapping programs at six Western Australian sites from 1997–2015, 431 non-target individuals, including 232 individuals from native species (132 mammals, 52 birds and 42 reptiles) were captured. Among the native fauna; birds were more likely to be severely injured (33%, compared to 12% in mammals and 21% in reptiles). Amongst other vertebrates, larger individuals were less likely to be injured. Olfactory lures used in these studies attracted reptiles, but repelled mammals. By-catch varied with climate and landscape. Trap injury to by-catch species poses ethical concerns, especially for threatened species that can least afford an additional threat. Future trapping should consider the timing of trapping, trap placement, trap settings (especially the treadle pressure needed to close the trap) and new innovations sending immediate capture alerts to minimise by-catch and potential injury associated with prolonged restraint. By-catch welfare data should be analysed to identify best practice and on-going improvement.

Cotinine Plus Krill Oil Decreased Depressive Behavior, and Increased Astrocytes Survival in the Hippocampus of Mice Subjected to Restraint Stress.

Restraint stress (RS) is a condition affecting millions of people worldwide. The investigation of new therapies to alleviate the consequences of prolonged RS is much needed. Cotinine, a nicotine-derivative, has shown to prevent the decrease in cerebral synaptic density, working memory deficits, anxiety, and depressive-like behavior after prolonged restraint stress (RS) in mice. Furthermore, post-treatment with cotinine reduced the adverse effects of chronic RS on astrocyte survival and architecture. On the other hand, the nutritional supplement krill oil (KO), has shown to be beneficial in decreasing depressive-like behavior and oxidative stress. In this study, in the search for effective preventative treatments to be used in people subjected to reduced mobility, the effect of co-treatment with cotinine plus KO in mice subjected to prolonged RS was investigated. The results show that cotinine plus KO prevented the loss of astrocytes, the appearance of depressive-like behavior and cognitive impairment induced by RS. The use of the combination of cotinine plus KO was more effective than cotinine alone in preventing the depressive-like behavior in the restrained mice. The potential use of this combination to alleviate the psychological effects of reduced mobility is discussed.