A simple protocol for the synthesis of Weinreb benzamides and α,β-unsaturated Weinreb amides through a palladium-catalyzed cross-coupling reaction between organoboronic acids and ...N-methoxy-N-methylcarbamoyl chloride has been developed. The method is also applicable to the use of potassium organotrifluoroborates.
Abstract
BACKGROUND
Sport-related structural brain injury (SRSBI) is intracranial pathology incurred during sport. Management mirrors that of non-sport-related brain injury. An empirical vacuum ...exists regarding return to play (RTP) following SRSBI.
OBJECTIVE
To provide key insight for operative management and RTP following SRSBI using a (1) focused systematic review and (2) survey of expert opinions.
METHODS
A systematic literature review of SRSBI from 2012 to present in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and a cross-sectional survey of RTP in SRSBI by 31 international neurosurgeons was conducted.
RESULTS
Of 27 included articles out of 241 systematically reviewed, 9 (33.0%) case reports provided RTP information for 12 athletes. To assess expert opinion, 31 of 32 neurosurgeons (96.9%) provided survey responses. For acute, asymptomatic SRSBI, 12 (38.7%) would not operate. Of the 19 (61.3%) who would operate, midline shift (63.2%) and hemorrhage size > 10 mm (52.6%) were the most common indications. Following SRSBI with resolved hemorrhage, with or without burr holes, the majority of experts (>75%) allowed RTP to high-contact/collision sports at 6 to 12 mo. Approximately 80% of experts did not endorse RTP to high-contact/collision sports for athletes with persistent hemorrhage. Following craniotomy for SRSBI, 40% to 50% of experts considered RTP at 6 to 12 mo. Linear regression revealed that experts allowed earlier RTP at higher levels of play (β = –0.58, 95% CI –0.111, –0.005, P = .033).
CONCLUSION
RTP decisions following structural brain injury in athletes are markedly heterogeneous. While individualized RTP decisions are critical, aggregated expert opinions from 31 international sports neurosurgeons provide key insight. Level of play was found to be an important consideration in RTP determinations.
A convergent synthesis of indoprofen via a Buchwald coupling approach is reported. Using this methodology, indoprofen and a set of analogs of indoprofen were readily prepared.
Celotno besedilo
Dostopno za:
BFBNIB, DOBA, GIS, IJS, IZUM, KILJ, KISLJ, NUK, PILJ, PNG, SAZU, UILJ, UKNU, UL, UM, UPUK
OSA and Pulmonary Hypertension Ismail, Khalid, MD; Roberts, Kari, MD; Manning, Patrick, MD ...
Chest,
March 2015, Letnik:
147, Številka:
3
Journal Article
Recenzirano
OSA is a common yet underdiagnosed disorder encountered in everyday practice. The disease is a unique physiologic stressor that contributes to the development or progression of many other disorders, ...particularly cardiovascular conditions. The pulmonary circulation is specifically affected by the intermittent hypoxic apneas associated with OSA. The general consensus has been that OSA is associated with pulmonary hypertension (PH), but only in a minority of OSA patients and generally of a mild degree. Consequently, there has been no sense of urgency to screen for either condition when evaluating the other. In this review, we explore available evidence describing the interaction between OSA and PH and seek to better understand underlying pathophysiology. We describe certain groups of patients who have a particular preponderance of OSA and PH. Failure to recognize the mutual additive effects of these disorders can lead to suboptimal patient outcomes. Among patients with PH and OSA, CPAP, the mainstay treatment for OSA, may ameliorate pulmonary pressure elevations, but has not been studied adequately. Conversely, among patients with OSA, PH significantly limits functional capacity and potentially shortens survival; yet, there is no routine screening for PH in patients with OSA. We think it is time to study the interaction between OSA and PH more carefully to identify high-risk subgroups. These would be screened for the presence of combined disorders, facilitating earlier institution of therapy and improving outcomes.
NIH Roundtable on Emergency Trauma Research Cairns, Charles B., MD; Maier, Ronald V., MD; Adeoye, Opeolu, MD ...
Annals of emergency medicine,
11/2010, Letnik:
56, Številka:
5
Journal Article, Conference Proceeding
Recenzirano
Study objective The National Institutes of Health (NIH) formed an NIH Task Force on Research in Emergency Medicine to enhance NIH support for emergency care research. The NIH Trauma Research ...Roundtable was convened on June 22 to 23, 2009. The objectives of the roundtable are to identify key research questions essential to advancing the scientific underpinnings of emergency trauma care and to discuss the barriers and best means to advance research by exploring the role of trauma research networks and collaboration between NIH and the emergency trauma care community. Methods Before the roundtable, the emergency care domains to be discussed were selected and experts in each of the fields were invited to participate in the roundtable. Domain experts were asked to identify research priorities and challenges and separate them into mechanistic, translational, and clinical categories. During and after the conference, the lists were circulated among the participants and revised to reach a consensus. Results Emergency trauma care research is characterized by focus on the timing, sequence, and time sensitivity of disease processes and treatment effects. Rapidly identifying the phenotype of patients on the time spectrum of acuity and severity after injury and the mechanistic reasons for heterogeneity in outcome are important challenges in emergency trauma research. Other research priorities include the need to elucidate the timing, sequence, and duration of causal molecular and cellular events involved in time-critical injuries, and the development of treatments capable of halting or reversing them; the need for novel experimental models of acute injury; the need to assess the effect of development and aging on the postinjury response; and the need to understand why there are regional differences in outcomes after injury. Important barriers to emergency care research include a limited number of trained investigators and experienced mentors, limited research infrastructure and support, and regulatory hurdles. Conclusion The science of emergency trauma care may be advanced by facilitating the following: (1) development of an acute injury template for clinical research; (2) developing emergency trauma clinical research networks; (3) integrating emergency trauma research into Clinical and Translational Science Awards; (4) developing emergency care–specific initiatives within the existing structure of NIH institutes and centers; (5) involving acute trauma and emergency specialists in grant review and research advisory processes; (6) supporting learn-phase or small, clinical trials; (7) performing research to address ethical and regulatory issues; and (8) training emergency care investigators with research training programs.
Systematic review of possible long-term effects of sports-related concussion in retired athletes.
Ten electronic databases.
Original research; incidence, risk factors or causation related to ...long-term mental health or neurological problems; individuals who have suffered a concussion; retired athletes as the subjects and possible long-term sequelae defined as
10 years after the injury.
Study population, exposure/outcome measures, clinical data, neurological examination findings, cognitive assessment, neuroimaging findings and neuropathology results. Risk of bias and level of evidence were evaluated by two authors.
Following review of 3819 studies, 47 met inclusion criteria. Some former athletes have depression and cognitive deficits later in life, and there is an association between these deficits and multiple prior concussions. Former athletes are not at increased risk for death by suicide (two studies). Former high school American football players do not appear to be at increased risk for later life neurodegenerative diseases (two studies). Some retired professional American football players may be at increased risk for diminishment in cognitive functioning or mild cognitive impairment (several studies), and neurodegenerative diseases (one study). Neuroimaging studies show modest evidence of macrostructural, microstructural, functional and neurochemical changes in some athletes.
Multiple concussions appear to be a risk factor for cognitive impairment and mental health problems in some individuals. More research is needed to better understand the prevalence of chronic traumatic encephalopathy and other neurological conditions and diseases, and the extent to which they are related to concussions and/or repetitive neurotrauma sustained in sports.
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