The therapeutic efficacy of systemic drug delivery vehicles depends on their ability to evade the immune system, cross the biological barriers of the body and localize at target tissues. Leukocytes possess all of these functions and exert their targeting ability through cellular membrane interactions. Here we show that NanoPorous Silicon particles (NPS) can successfully perform all these actions when coated with cellular membranes purified from white blood cells. These hybrid particles called LeukoLike Vectors (LLV) were able to: prevent rapid clearance of phagocytic cells of the immune system; communicate with endothelial cells through receptor-ligand interaction; transport and release a payload across an inflamed reconstructed endothelium. Furthermore, LLV retained their functions when injected in vivo, showing enhanced circulation time and improved accumulation in the tumour.
Some scientists and ethicists are criticizing traditional conservation strategies, which they say focus on saving valued species while discounting the lives of less charismatic animals. Will these advocates of “compassionate conservation” point the way to new approaches, or are they simply being naïve?
<p>The study of the rise and institutions of the Tibetan empire of the seventh to ninth centuries, and of the continuing development of Tibetan civilization during the obscure period that followed, have aroused growing interest among scholars of Inner Asia in recent decades. The six contributions presented here represent refinements in substance and method characterizing current work in this area. A chapter by Brandon Dotson provides a new perspective on law and divination under the empire, while the post-imperial international relations of the Tsong kha kingdom are analyzed by Bianca Horlemann. In "The History of the Cycle of Birth and Death," Yoshiro Imaeda's investigation of a Dunhuang narrative appears in a revised edition, in English for the first time. The problem of oral transmission in relation to the Tibetan Dunhuang texts is then taken up in the contribution of Sam van Schaik. In the final section, Matthew Kapstein and Carmen Meinert consider aspects of Chinese Buddhism in their relation to religious developments in Tibet.</p>
Over the past decade, however, researchers have shed light on a different frame through which we might view this scene: the lives of the animals themselves. In that time, our understanding of animal minds — not just their intelligence, but also their inner lives — has been transformed.1 Consciousness, the nonhuman existence of which was until recently a subject of spirited debate, is now recognized as ubiquitous; traits like empathy, self-awareness, and the ability to conceive of past and future, once attributed to just a few exceptionally cognitive species, are now thought to be widespread. Emotions and subjectivities have supplanted a narrow emphasis on problem-solving aspects of intelligence. Anthropomorphism is no longer a scientific taboo, and to think of other animals as sharing fundamental aspects of our own inner lives isn’t anthropocentric: it’s common sense.
<p><strong>Creator's Description:</strong> Confusion shrouds the events surrounding the death of Emperor Khri Srong lde btsan (742-c. 800) and the succession of his sons at the turn of the ninth century. Tibetan religious histories, Old Tibetan sources, and Chinese sources offer conflicting pictures of the order of events and the identities of those involved. Fortunately, a newly-published source, the <em>Pangtangma Catalogue ('Phang thang ma)</em>, throws new light on the royal succession by referring to Mu rug btsan, the elder brother of Khri Lde srong btsan, as nothing less than an emperor (<em>btsan po</em>). Considering this new information alongside Old Tibetan inscriptional evidence, this article attempts to establish the order of events around Khri Srong lde btsan (742-c. 800)'s abdication and death, and to locate "Emperor Mu rug btsan" within them. (2007-11-18)</p>
On the outskirts of Melbourne, Australia are habitats unlike any found in that continent’s history:
Women experiencing severe perinatal mental illness during pregnancy or postpartum have unique needs when psychiatric hospitalization is indicated. Although many countries have established mother-baby psychiatric units, similar facilities have not been available in the US. In 2011, the University of North Carolina at Chapel Hill inaugurated the first Perinatal Psychiatry Inpatient Unit in the US. We describe the unique characteristics of the patient population and report clinical outcomes guiding development and refinement of treatment protocols. Ninety-two perinatal patients were admitted between September 2011 and September 2012, and 91 completed self-report measures at admission and discharge. Perinatal unipolar mood disorder was the most frequent primary diagnosis (60.43 %), and 11 patients (12 %) were admitted with psychosis. The data document clinically and statistically significant improvements in symptoms of depression, anxiety, and active suicidal ideation between admission and discharge (p < 0.0001), as assessed by the Edinburgh Postnatal Depression Scale, Patient Health Questionnaire, and Generalized Anxiety Disorder Scale. Overall functioning was also improved, demonstrated by a significant mean difference of -10.96 in total scores of the Work and Social Adjustment Scale (p < 0.0001). Data suggest that delivering specialized and targeted interventions for severe maternal mental illness in a safe and supportive setting produces positive patient outcomes.
Background: While there is a growing interest in the therapeutic benefits of yoga, minority populations with arthritis tend to be under-represented in the research. Additionally, there is an absence of guidance in the literature regarding the use of multicultural teams and sociocultural health beliefs, when designing yoga studies for a racially diverse population with arthritis. This pilot study examined the feasibility of offering yoga as a self-care modality to an urban, bilingual, minority population with osteoarthritis (OA) or rheumatoid arthritis (RA), in the Washington, DC area. Methods: The primary objective of the study was to assess the feasibility of offering an 8-week, bilingual yoga intervention adapted for arthritis to a convenience sample of primarily Hispanic and Black/African-American adults. A racially diverse interdisciplinary research team was assembled to design a study to facilitate recruitment and retention. The second objective identified outcome measures to operationalize potential facilitators and barriers to self-care and self-efficacy. The third objective determined the feasibility of using computer-assisted self-interview (CASI) for data collection. Results: Enrolled participants (n = 30) were mostly female (93%), Spanish speaking (69%), and diagnosed with RA (88.5%). Feasibility was evaluated using practicality, acceptability, adaptation, and expansion of an arthritis-adapted yoga intervention, modified for this population. Recruitment (51%) and participation (60%) rates were similar to previous research and clinical experience with the study population. Of those enrolled, 18 started the intervention. For adherence, 12 out of 18 (67%) participants completed the intervention. All (100%), who completed the intervention, continued to practice yoga 3 months after completing the study. Using nonparametric tests, selected outcome measures showed a measurable change post-intervention suggesting appropriate use in future studies. An in-person computerized questionnaire was determined to be a feasible method of data collection. Conclusions: Findings from this pilot study confirm the feasibility of offering yoga to this racially/ethnically diverse population with arthritis. This article provides recruitment/retention rates, outcome measures with error rates, and data collection recommendations for a previously under-represented population. Suggestions include allocating resources for translation and using a multicultural design to facilitate recruitment and retention. Trial registration: ClinicalTrials.gov, NCT01617421.
Background. The purpose of this article is to review the evidence for the efficacy of hatha yoga for depression and possible mechanisms by which yoga may have an impact on depression, and to outline directions for future research. Methods. Literature review and synthesis. Results and conclusions. A literature search for clinical trials examining yoga for depression uncovered eight trials: 5 including individuals with clinical depression, and 3 for individuals with elevated depression symptoms. Although results from these trials are encouraging, they should be viewed as very preliminary because the trials, as a group, suffered from substantial methodological limitations. We would argue, however, that there are several reasons to consider constructing careful research on yoga for depression. First, current strategies for treating depression are not sufficient for many individuals, and patients have several concerns about existing treatments. Yoga may be an attractive alternative to or a good way to augment current depression treatment strategies. Second, aspects of yoga-including mindfulness promotion and exercise-are thought to be "active ingredients" of other successful treatments for depression. Third, there are plausible biological, psychological, and behavioral mechanisms by which yoga may have an impact on depression. We provide suggestions for the next steps in the study of yoga as a treatment for depression. (Journal of Psychiatric Practice 2010;16:22-33)
Background. The purpose of this article is to review the evidence for the efficacy of hatha yoga for depression and possible mechanisms by which yoga may have an impact on depression, and to outline directionsfor future research. Methods. Literature review and synthesis. Results and conclusions. A literature search
for clinical trials examining yoga for depression uncovered eight trials: 5 including individuals with clinical depression, and 3 for individuals with elevated depression symptoms. Although results from these trials
are encouraging, they should be viewed as very preliminary because the trials, as a group, suffered from
substantial methodological limitations. We would argue, however, that there are several reasons to consider constructing careful research on yoga for depression. First, current strategies for treating depression are not sufficient for many individuals, and patients have several concerns about existing treatments. Yoga may
be an attractive alternative to or a good way to augment current depression treatment strategies. Second, aspects of yoga—including mindfulness promotion and exercise—are thought to be “active ingredients” of other successful treatments for depression. Third, there are plausible biological, psychological, and behavioral mechanisms by which yoga may have an impact on depression. We provide suggestions for the next steps in the study of yoga as a treatment for depression.
The ability to focus one's attention underlies success in many everyday tasks, but voluntary attention cannot be sustained for extended periods of time. In the laboratory, sustained-attention failure is manifest as a decline in perceptual sensitivity with increasing time on task, known as the vigilance decrement. We investigated improvements in sustained attention with training (~ 5 hr/day for 3 months), which consisted of meditation practice that involved sustained selective attention on a chosen stimulus (e.g., the participant's breath). Participants were randomly assigned either to receive training first (n = 30) or to serve as waiting-list controls and receive training second (n = 30). Training produced improvements in visual discrimination that were linked to increases in perceptual sensitivity and improved vigilance during sustained visual attention. Consistent with the resource model of vigilance, these results suggest that perceptual improvements can reduce the resource demand imposed by target discrimination and thus make it easier to sustain voluntary attention.
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The capacity to focus one's attention for an extended period of time can be increased through training in contemplative practices. However, the cognitive processes engaged during meditation that support trait changes in cognition are not well characterized. We conducted a longitudinal wait-list controlled study of intensive meditation training. Retreat participants practiced focused attention (FA) meditation techniques for three months during an initial retreat. Wait-list participants later undertook formally identical training during a second retreat. Dense-array scalp-recorded electroencephalogram (EEG) data were collected during 6 min of mindfulness of breathing meditation at three assessment points during each retreat. Second-order blind source separation, along with a novel semi-automatic artifact removal tool (SMART), was used for data preprocessing. We observed replicable reductions in meditative state-related beta-band power bilaterally over anteriocentral and posterior scalp regions. In addition, individual alpha frequency (IAF) decreased across both retreats and in direct relation to the amount of meditative practice. These findings provide evidence for replicable longitudinal changes in brain oscillatory activity during meditation and increase our understanding of the cortical processes engaged during meditation that may support long-term improvements in cognition.
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Researchers have recently demonstrated that mind-wandering episodes can vary on numerous dimensions, and it has been suggested that assessing these dimensions will play an important role in our understanding of mind wandering. One dimension that has received considerable attention in recent work is the intentionality of mind wandering. Although it has been claimed that indexing the intentionality of mind wandering will be necessary if researchers are to obtain a coherent understanding of the wandering mind, one concern is that this dimension might be redundant with another, longstanding, dimension: namely, meta-awareness. Thus, the utility of the argument for assessing intentionality rests upon a demonstration that this dimension is distinct from the meta-awareness dimension. To shed light on this issue, across two studies we compared and contrasted these dimensions to determine whether they are redundant or distinct. In both studies, we found support for the view that these dimensions are distinct.
PURPOSE: Adjuvant chemotherapy for women with breast cancer has significantly improved the cure rate; however, it has been associated with chemotherapy-related cognitive impact (CRCI). The literature provides preliminary support for the feasibility and efficacy of yoga interventions for the general cancer population, however, controlled trials are scarce and no studies have examined the effect of yoga on cognition for women with breast cancer during chemotherapy. This case series aims to identify the impact of yoga on measures of cognition, functional outcomes, and quality of life (QOL) for breast cancer survivors (BCS).METHODS: Four women with a diagnosis of early-stage breast cancer prior to chemotherapy treatment were administered the following physiologic measures at baseline, 6, and 12 weeks during chemotherapy, and at one and three months after the conclusion of the study: Functional Reach test (balance) and Sit and Reach test (flexibility), and QOL, POMS (Mood) and FACT-B (QOL), at baseline. Primary outcomes of cognition were measured with the Perceived Cognition Questionnaire (PCQ) and CogState, a computerized measurement of cognition. Women attended an Iyengar-inspired yoga program twice a week for 12 weeks. Qualitative questionnaires were administered after the completion of the study to determine perceived benefits and challenges of the yoga program.
RESULTS: Four women with Stage II breast cancer ranged in age from 44-65 years. CogState computerized testing showed changes in varying domains of cognition through treatment and follow-up. Improved balance, flexibility, and QOL were also noted over time. No adverse events were observed. Analysis of qualitative data revealed the yoga classes were helpful and subjects continued the practice elements of yoga including relaxation, breathing, and stretching. The most challenging aspect of the study was physical limitations due to various medical complications and included fatigue, decreased range of motion, and pain.
CONCLUSION: This case series suggests that yoga may impact various aspects of cognition during and after chemotherapy administration as noted through quantitative measures. Women describe yoga as improving various domains of QOL through the treatment trajectory. This mind-body intervention may stave off CRCI; however, further investigation is needed for additional randomized controlled trials on the effects of yoga on cognition for women with breast cancer undergoing adjuvant chemotherapy treatment.
The spontaneous oscillatory activity in the human brain shows long-range temporal correlations (LRTC) that extend over time scales of seconds to minutes. Previous research has demonstrated aberrant LRTC in depressed patients; however, it is unknown whether the neuronal dynamics normalize after psychological treatment. In this study, we recorded EEG during eyes-closed rest in depressed patients (N = 71) and healthy controls (N = 25), and investigated the temporal dynamics in depressed patients at baseline, and after attending either a brief mindfulness training or a stress reduction training. Compared to the healthy controls, depressed patients showed stronger LRTC in theta oscillations (4-7 Hz) at baseline. Following the psychological interventions both groups of patients demonstrated reduced LRTC in the theta band. The reduction of theta LRTC differed marginally between the groups, and explorative analyses of separate groups revealed noteworthy topographic differences. A positive relationship between the changes in LRTC, and changes in depressive symptoms was observed in the mindfulness group. In summary, our data show that aberrant temporal dynamics of ongoing oscillations in depressive patients are attenuated after treatment, and thus may help uncover the mechanisms with which psychotherapeutic interventions affect the brain.
The aim of this study was to assess the acceptability and feasibility of Vinyasa yoga as an adjunctive treatment for depressed patients who were not responding adequately to antidepressant medication. The authors also planned to ask participants for qualitative feedback on their experience of the class and to assess change over time in depression and in possible mediating variables. The authors recruited 11 participants in 1 month for an 8-week open trial of yoga classes. They found that 10 participants completed follow-up assessments, 9 of 10 were positive about their experience, and all provided feedback about what was and was not helpful about yoga, as well as barriers to class attendance. Over the 2-month period, participants exhibited significant decreases in depression symptoms and significant increases in an aspect of mindfulness and in behavior activation. This pilot study provided support for continuing to investigate Vinyasa yoga as an adjunct treatment for depression. The next step required is a rigorous randomized clinical trial.
OBJECTIVE: The aim of this trial was to evaluate the effects of yoga on health-related quality of life in patients with colorectal cancer.METHODS: Patients with non-metastatic colorectal cancer were randomly assigned to a 10-week yoga intervention (90 min once weekly) or a waitlist control group. Primary outcome measure was disease-specific quality of life (Functional Assessment of Cancer Therapy - Colorectal [FACT-C]) at week 10. Secondary outcome measures included FACT-C subscales: spiritual well-being (FACT - Spirituality); fatigue (FACT - Fatigue); sleep disturbances (Pittsburgh Sleep Quality Inventory); depression and anxiety (Hospital Anxiety and Depression Scale); body awareness (Scale of Body Connection); and body-efficacy expectations (Body-Efficacy Expectations Scale). Outcomes were assessed at week 10 and week 22 after randomization.
RESULTS: Fifty-four patients (mean age 68.3 ± 9.7 years) were randomized to yoga (n = 27; attrition rate 22.2%) and control group (n = 27; attrition rate 18.5%). Patients in the yoga group attended a mean of 5.3 ± 4.0 yoga classes. No significant group differences for the FACT-C total score were found. Group differences were found for emotional well-being at week 22 (∆ = 1.59; 95% CI = 0.27,2.90; p = 0.019), sleep disturbances at week 22 (∆ = -1.08; 95% CI = -2.13, -0.03; p = 0.043), anxiety at week 10 (∆ = -1.14; 95% CI = -2.20, -0.09; p = 0.043), and depression at week 10 (∆ = -1.34; 95% CI = -2.61, -0.8; p = 0.038). No serious adverse events occurred in the yoga group, while liver metastases were diagnosed in one patient in the control group.
CONCLUSION: This randomized trial found no effects of yoga on health-related quality of life in patients with colorectal cancer. Given the high attrition rate and low intervention adherence, no definite conclusions can be drawn from this trial.
Dan, Mike, & Brandon dive into an emerging trend in the 21st century classroom, Social Emotional Learning. They take a first look at the topic, discuss how programs have begun to emerge, and just how technology and SEL might work together. Dan also quizzes Brandon & Mike on their emotional knowledge.
What can a speech reveal about someone's state? We tested the idea that greater stress reactivity would relate to lower linguistic cognitive complexity while speaking. In Study 1, we tested whether heart rate and emotional stress reactivity to a stressful discussion would relate to lower linguistic complexity. In Studies 2 and 3, we tested whether a greater cortisol response to a standardized stressful task including a speech (Trier Social Stress Test) would be linked to speaking with less linguistic complexity during the task. We found evidence that measures of stress responsivity (emotional and physiological) and chronic stress are tied to variability in the cognitive complexity of speech. Taken together, these results provide evidence that our individual experiences of stress or "stress signatures"-how our body and mind react to stress both in the moment and over the longer term-are linked to how complex our speech under stress.
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The quality of teachers' relationships with children is a key predictor of children's later social emotional competence and academic achievement. Interventions to increase mindfulness among teachers have focused primarily on the impacts on teachers' subjective well-being, but not on the quality of their relationships with children. Furthermore, none of these interventions have involved preschool teachers. To consider the potential of mindfulness-based interventions to improve the quality of teachers' relationships with preschool-aged children, we examined data from an online survey of 1001 classroom teachers in 37 Pennsylvania Head Start Programs. Using path analysis we investigated the association between teachers' dispositional mindfulness and the quality of their relationships with children (conflict and closeness). We further examined whether this association was mediated by teacher depressive symptoms and moderated by perceived workplace stress. Higher levels of dispositional mindfulness among teachers were associated with higher quality relationships with children (less conflict and greater closeness). The association between greater dispositional mindfulness and less conflict was partially mediated by lower depressive symptoms, and the conditional direct effect of mindfulness on conflict was stronger when perceived workplace stress was lower. These findings suggest that preschool teachers who have higher levels of dispositional mindfulness may experience higher quality relationships with children in their classrooms. Interventions to increase levels of dispositional mindfulness among early childhood educators may improve their well-being along with the quality of their relationships with children, potentially impacting children's educational outcomes. The potential impacts of such interventions may be even stronger if structural and systemic changes are also made to reduce workplace stress.
The quality of teachers' relationships with children is a key predictor of children's later social emotional competence and academic achievement. Interventions to increase mindfulness among teachers have focused primarily on the impacts on teachers' subjective well-being, but not on the quality of their relationships with children. Furthermore, none of these interventions have involved preschool teachers. To consider the potential of mindfulness-based interventions to improve the quality of teachers' relationships with preschool-aged children, we examined data from an online survey of 1001 classroom teachers in 37 Pennsylvania Head Start Programs. Using path analysis we investigated the association between teachers' dispositional mindfulness and the quality of their relationships with children (conflict and closeness). We further examined whether this association was mediated by teacher depressive symptoms and moderated by perceived workplace stress. Higher levels of dispositional mindfulness among teachers were associated with higher quality relationships with children (less conflict and greater closeness). The association between greater dispositional mindfulness and less conflict was partially mediated by lower depressive symptoms, and the conditional direct effect of mindfulness on conflict was stronger when perceived workplace stress was lower. These findings suggest that preschool teachers who have higher levels of dispositional mindfulness may experience higher quality relationships with children in their classrooms. Interventions to increase levels of dispositional mindfulness among early childhood educators may improve their well-being along with the quality of their relationships with children, potentially impacting children's educational outcomes. The potential impacts of such interventions may be even stronger if structural and systemic changes are also made to reduce workplace stress.
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