366 research outputs found
Patient Safety and Quality Improvement Education for Paramedics
The Institute for Healthcare Improvement (IHI) Open School offers a series of online patient safety and quality improvement courses, which are free to students and faculty members of all health professions.https://first.fanshawec.ca/cri_ridposters/1004/thumbnail.jp
Patient Safety and Quality Improvement Education for Paramedics: Peacticing What We Preach
Our patients expect and deserve safe, high-quality care. Paramedics have a personal responsibility for providing safe care, regardless of previous education or regulatory framework. The onus is on us all to ensure that paramedics are adequately prepared to address this responsibility
The secretion inhibitor Exo2 perturbs trafficking of Shiga toxin between endosomes and the trans-Golgi network
The small-molecule inhibitor Exo2 {4-hydroxy-3-methoxy-(5,6,7,8-tetrahydrol[1]benzothieno[2,3-d]pyrimidin-4-yl)hydraz-one benzaldehyde} has been reported to disrupt the Golgi apparatus completely and to stimulate Golgi–ER (endoplasmic reticulum) fusion in mammalian cells, akin to the well-characterized fungal toxin BFA (brefeldin A). It has also been reported that Exo2 does not affect the integrity of the TGN (trans-Golgi network), or the direct retrograde trafficking of the glycolipid-binding cholera toxin from the TGN to the ER lumen. We have examined the effects of BFA and Exo2, and found that both compounds are indistinguishable in their inhibition of anterograde transport and that both reagents significantly disrupt the morphology of the TGN in HeLa and in BS-C-1 cells. However, Exo2, unlike BFA, does not induce tubulation and merging of the TGN and endosomal compartments. Furthermore, and in contrast with its effects on cholera toxin, Exo2 significantly perturbs the delivery of Shiga toxin to the ER. Together, these results suggest that the likely target(s) of Exo2 operate at the level of the TGN, the Golgi and a subset of early endosomes, and thus Exo2 provides a more selective tool than BFA for examining membrane trafficking in mammalian cells
Golgi Membranes Are Absorbed into and Reemerge from the ER during Mitosis
AbstractQuantitative imaging and photobleaching were used to measure ER/Golgi recycling of GFP-tagged Golgi proteins in interphase cells and to monitor the dissolution and reformation of the Golgi during mitosis. In interphase, recycling occurred every 1.5 hr, and blocking ER egress trapped cycling Golgi enzymes in the ER with loss of Golgi structure. In mitosis, when ER export stops, Golgi proteins redistributed into the ER as shown by quantitative imaging in vivo and immuno-EM. Comparison of the mobilities of Golgi proteins and lipids ruled out the persistence of a separate mitotic Golgi vesicle population and supported the idea that all Golgi components are absorbed into the ER. Moreover, reassembly of the Golgi complex after mitosis failed to occur when ER export was blocked. These results demonstrate that in mitosis the Golgi disperses and reforms through the intermediary of the ER, exploiting constitutive recycling pathways. They thus define a novel paradigm for Golgi genesis and inheritance
Strategies for incorporating patient safety education in paramedic education using the IHI Open School
IntroductionEvery year, thousands of patients die and millions are harmed by medical care provision. Paramedics care for patients in dynamic, and challenging environments every day, which creates conditions that are ideal for mistakes to occur and for harm to be caused as a result. Knowledge of patient safety is recognised as a competency for paramedics in several jurisdictions, yet general awareness among paramedics of patient safety issues remains poor. The Institute for Healthcare Improvement (IHI) Open School courses were identified as a potential solution to this identified gap. These courses have been successfully integrated into various health professions education programs in other institutions; however, no literature was discovered which discussed the integration of these courses into paramedic education.MethodsEight online courses from the 13-course IHI Basic Certificate in Quality and Safety were embedded into the curriculum of a professional issues class in a paramedic diploma program in Ontario, Canada. Courses were completed outside of classroom time over one semester, and a percentage of activity marks for the class were awarded to students on the completion of the eight courses. Students provided a copy of certificates to prove completion of training.ResultsIn this pilot program, 41 paramedic students in the class (98%) completed all 13 courses, and were awarded the IHI Basic Certificate in Quality and Safety. Students described the courses as “highly applicable to paramedicine and pre-hospital care”. In addition, students state that completing the certificate gave them knowledge of “the means by which change can be enacted”. The completion of the courses outside of class time was achievable, and feedback from students has been overwhelmingly positive. An additional 43 students are currently enrolled in the courses, with completion expected by December 2018.ConclusionThe IHI Open School courses are an easy to implement strategy for paramedics looking to gain a brief, concise education on quality and patient safety. It is our goal to integrate the IHI Open School Basic Certificate across all classes in the two-year diploma program. We hope this will lay a foundation for professional practice that is based on safe, high-quality care provision
Evidence for a role of NTS2 receptors in the modulation of tonic pain sensitivity
<p>Abstract</p> <p>Background</p> <p>Central neurotensin (NT) administration results in a naloxone-insensitive antinociceptive response in animal models of acute and persistent pain. Both NTS1 and NTS2 receptors were shown to be required for different aspects of NT-induced analgesia. We recently demonstrated that NTS2 receptors were extensively associated with ascending nociceptive pathways, both at the level of the dorsal root ganglia and of the spinal dorsal horn. Then, we found that spinally administered NTS2-selective agonists induced dose-dependent antinociceptive responses in the acute tail-flick test. In the present study, we therefore investigated whether activation of spinal NTS2 receptors suppressed the persistent inflammatory pain symptoms observed after intraplantar injection of formalin.</p> <p>Results</p> <p>We first demonstrated that spinally administered NT and NT69L agonists, which bind to both NTS1 and NTS2 receptors, significantly reduced pain-evoked responses during the inflammatory phase of the formalin test. Accordingly, pretreatment with the NTS2-selective analogs JMV-431 and levocabastine was effective in inhibiting the aversive behaviors induced by formalin. With resolution at the single-cell level, we also found that activation of spinal NTS2 receptors reduced formalin-induced <it>c-fos </it>expression in dorsal horn neurons. However, our results also suggest that NTS2-selective agonists and NTS1/NTS2 mixed compounds differently modulated the early (21–39 min) and late (40–60 min) tonic phase 2 and recruited endogenous pain inhibitory mechanisms integrated at different levels of the central nervous system. Indeed, while non-selective drugs suppressed pain-related behaviors activity in both part of phase 2, intrathecal injection of NTS2-selective agonists was only efficient in reducing pain during the late phase 2. Furthermore, assessment of the stereotypic pain behaviors of lifting, shaking, licking and biting to formalin also revealed that unlike non-discriminative NTS1/NTS2 analogs reversing all nociceptive endpoint behaviors, pure NTS2 agonists specifically inhibited paw lifting, supporting a role of NTS2 in spinal modulation of persistent nociception.</p> <p>Conclusion</p> <p>The present study provides the first demonstration that activation of NTS2 receptors produces analgesia in the persistent inflammatory pain model of formalin. The dichotomy between these two classes of compounds also indicates that both NTS1 and NTS2 receptors are involved in tonic pain inhibition and implies that these two NT receptors modulate the pain-induced behavioral responses by acting on distinct spinal and/or supraspinal neural circuits. In conclusion, development of NT agonists targeting both NTS1 and NTS2 receptors could be useful for chronic pain management.</p
Molecular and cellular mechanisms underlying the evolution of form and function in the amniote jaw.
The amniote jaw complex is a remarkable amalgamation of derivatives from distinct embryonic cell lineages. During development, the cells in these lineages experience concerted movements, migrations, and signaling interactions that take them from their initial origins to their final destinations and imbue their derivatives with aspects of form including their axial orientation, anatomical identity, size, and shape. Perturbations along the way can produce defects and disease, but also generate the variation necessary for jaw evolution and adaptation. We focus on molecular and cellular mechanisms that regulate form in the amniote jaw complex, and that enable structural and functional integration. Special emphasis is placed on the role of cranial neural crest mesenchyme (NCM) during the species-specific patterning of bone, cartilage, tendon, muscle, and other jaw tissues. We also address the effects of biomechanical forces during jaw development and discuss ways in which certain molecular and cellular responses add adaptive and evolutionary plasticity to jaw morphology. Overall, we highlight how variation in molecular and cellular programs can promote the phenomenal diversity and functional morphology achieved during amniote jaw evolution or lead to the range of jaw defects and disease that affect the human condition
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