The ups and downs of amphioxus biology: a history.

The ups and downs of amphioxus biology: a history. Int J Dev Biol. 2017;61(10-11-12):575-583 Authors: Holland ND, Holland LZ Abstract Humans (at least a select few) have long known about the cephalochordate amphioxus, first as something to eat and later as a subject for scientific study. The rate of publication on these animals has waxed and waned several times. The first big surge, in the late nineteenth century, was stimulated by Darwin's evolutionary ideas and by Kowalevsky's embryologic findings suggesting that an amphioxus-like creature might have bridged the gap between the invertebrates and the vertebrates. Interest declined sharply in the early twentieth century and remained low for the next 50 years. An important contributing factor (in addition to inhibition by two world wars and the Great Depression) was the indifference of the new evolutionary synthesis toward broad phylogenetic problems like the origin of the vertebrates. Then, during the 1960s and 1970s, interest in amphioxus resurged, driven especially by increased government support for basic science as well as opportunities presented by electron microscopy. After faltering briefly in the 1980s (electron microscopists were running out of amphioxus tissues to study), a third and still-continuing period of intensive amphioxus research began in the early 1990s, stimulated by the advent of evolutionary developmental biology (evo-devo) and genomics. The volume of studies peaked in 2008 with the...
Source: International Journal of Developmental Biology - Category: Biology Tags: Int J Dev Biol Source Type: research

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As the White House doubles down on a zero-tolerance immigration policy that has led to the forced separation of families, medical experts are sounding alarms about the potentially irreparable psychological damage that could plague the children affected. A number of prominent medical organizations, from the American Psychological Association (APA) to the American Academy of Pediatrics, have joined a chorus of regulatory bodies, lawmakers and activists who have condemned the policy. The APA’s president and CEO also sent a letter to President Donald Trump on June 14, urging him to reverse the policy given “multipl...
Source: TIME: Health - Category: Consumer Health News Authors: Tags: Uncategorized healthytime Mental Health/Psychology onetime Source Type: news
Authors: Hayward RD, Fessler MM, Buck J, Fessler RD Abstract INTRODUCTION: Studies have shown an increased risk of traumatic brain injury (TBI) for individuals who suffer an initial TBI. The current study hypothesized that individuals with recurrent neurotrauma would originate from populations considered 'vulnerable', i.e. low income and/or with psychiatric comorbidities. METHODS: Data from the Michigan State Inpatient Database from 2006 to 2014 for the Detroit metropolitan area enlisted a study population of 50 744 patients with neurotrauma. Binary logistic regression was used to assess risk factors associated...
Source: Brain Injury - Category: Neurology Tags: Brain Inj Source Type: research
CONCLUSIONS: These findings suggest that chronic post-concussive symptoms following an mTBI relate to altered exosomal activity, and that greater tau pathology may underlie chronic post-concussive symptoms that develop following mTBIs. It also suggests that central inflammatory activity contributes to PTSD symptoms following an mTBI, providing necessary insights into the role of inflammation in chronic PTSD symptoms. PMID: 29913077 [PubMed - as supplied by publisher]
Source: Brain Injury - Category: Neurology Tags: Brain Inj Source Type: research
A new report shows an average of 20 veterans continue to die by suicide every day, making it a'top clinical priority'for the US Department of Veterans Affairs.Medscape Medical News
Source: Medscape Medical News Headlines - Category: Consumer Health News Tags: Psychiatry News Source Type: news
Conclusions: The relatively low level of inflammatory saliva cytokines observed in the current study (negative z scores versus normative data with medium effect sizes) indicates that evaluation of blood inflammatory levels in trichotillomania versus matched controls would be valuable in future work. If a hypoinflammatory state is confirmed ­using blood samples, this would differentiate trichotillomania from other mental disorders (such as OCD, schizophrenia, and depression), which have typically been linked with high inflammatory measures in the literature, at least in some cases.Neuropsychobiology
Source: Neuropsychobiology - Category: Psychiatry & Psychology Source Type: research
Conclusion: Vitamin D was inversely associated with depression and obesity. BDNF was associated with abdominal obesity, but not with depression. At the population level, our results support the relevant roles of vitamin D and BDNF in mental and physical health-related outcomes.Neuropsychobiology
Source: Neuropsychobiology - Category: Psychiatry & Psychology Source Type: research
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Source: World of Psychology - Category: Psychiatry & Psychology Authors: Tags: Addiction Alcoholism Anxiety and Panic Bullying Children and Teens College Depression Eating Disorders Friends General Perfectionism Policy and Advocacy Student Therapist Students Violence and Aggression Life Transition Men Source Type: blogs
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Source: Harvard Health Blog - Category: Consumer Health News Authors: Tags: Children's Health Source Type: blogs
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Source: Hormone Research in Paediatrics - Category: Endocrinology Source Type: research
Researchers from the University of Rochester, New York, found children from argumentative households are less likely to experience depression if they bond with their brothers and sisters.
Source: the Mail online | Health - Category: Consumer Health News Source Type: news
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