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Malignant bowel obstruction (MBO) in patients with advanced gynecologic cancer (GyCa) can negatively impact clinical outcomes and quality of life. Oncology nurses can support these patients with adequate tools/processes.Patients with GyCa with/at risk of MBO endure frequent emergency or hospital admissions, impacting patient care.Optimizing oncology nurses' role to improve care for patients with GyCa with/at risk of MBO, the gynecology oncology interprofessional team collaborated to develop a proactive outpatient nurse-led MBO model of care (MOC).The MBO MOC involves a risk-based algorithm engaging interdisciplinary care, utilizing standardized tools, risk-based assessment, management, and education for patients and nurses. The MOC has improved patient-reported confidence level of bowel self-management and decreased hospitalization. Following education, nurses demonstrated increased knowledge in MBO management.An outpatient nurse-led MBO MOC can improve patient care and may be extended to other cancer centers, fostering collaboration and best practice.

Objective:. Our objective was to review the use of videoconferencing as a practical tool for remote surgical education and to propose a model to overcome the impact of a pandemic on resident training. Summary Background Data:. In response to the coronavirus disease 2019 pandemic, most institutions and residency programs have been restructured to minimize the number of residents in the hospital as well as their interactions with patients and to promote physical distancing measures. This has resulted in decreased resident operative exposure, responsibility, and autonomy, hindering their educational goals and ability to achieve surgical expertise necessary for independent practice. Methods:. We conducted a narrative review to explore the use of videoconferencing for remote broadcasting of surgical procedures, telecoaching using surgical videos, telesimulation for surgical skills training, and establishing a didactic lecture series. Results and Conclusions:. We present a multimodal approach for using practical videoconferencing tools that provide the means for audiovisual communication to help augment residents’ operative experience and limit the impact of self-isolation, redeployment, and limited operative exposure on surgical training.

Background Service models for gastrointestinal endoscopy sedation must be safe, as endoscopy is the most common procedure performed under sedation in many countries. The aim of this prospective cohort study was to determine the patient risk profile, and incidence of and risk factors for significant unplanned events, in adult patients presenting for gastrointestinal endoscopy in a group of university-affiliated hospitals where most sedation is managed by anaesthetists. Methods Patients aged ≥18 yr presenting for elective and emergency gastrointestinal endoscopy under anaesthetist-managed sedation at nine hospitals affiliated with the University of Melbourne, Australia, were included. Outcomes included significant airway obstruction, hypoxia, hypotension and bradycardia; unplanned tracheal intubation; abandoned procedure; advanced life support; prolonged post-procedure stay; unplanned over-night admission and 30-day mortality. Results 2,132 patients were included. Fifty percent of patients were aged >60 yr, 50% had a BMI >27 kg m −2, 42% were ASA physical status III-V and 17% were emergency patients. The incidence of significant unplanned events was 23.0% (including significant hypotension 11.8%). Significant unplanned intraoperative events were associated with increasing age, BMI Conclusions Patients presenting for gastrointestinal endoscopy at a group of public university-affiliated hospitals where most sedation is managed by anaesthetists, had a high risk profile and a substantial incidence of significant unplanned intraoperative events and 30-day mortality.

A green, aza-Michael reaction is described that can be used to teach undergraduate students conjugate addition of nitrogen nucleophile to an α,β-unsaturated ester. Students analyze spectral data of the product obtained from the assigned reaction to determine product structure and propose the mechanism of its formation. The experiment requires simple glassware and can be performed during a 3 to 4 h laboratory period in the second semester of introductory organic chemistry after acyl substitution and conjugate addition have been covered in a lecture class.

Several (+)- and (-)-α-pinene derivatives were synthesized and evaluated for their antimicrobial activity toward Gram-positive bacteria Micrococcus luteus and Staphylococcus aureus, Gram-negative bacterium Escherichia coli, and the unicellular fungus Candida albicans using bioautographic assays. (+)-α-Pinene 1a showed modest activity against the test organisms, whereas (-)-α-pinene 1b showed no activity at the tested concentration. Of all the α-pinene derivatives evaluated, the β-lactam derivatives (10a and 10b) were the most antimicrobial. The increase in the antimicrobial activity of 10a compared to 1a ranged from nearly 3.5-fold (C. albicans) to 43-fold (S. aureus). The mean ± standard deviation for the zone of inhibition (mm) for 10a (C. albicans) was 31.9 ± 4.3 and that for S. aureus was 51.1 ± 2.9. Although (-)-α-pinene 1b was not active toward the test microorganisms, the corresponding β-lactam 10b, amino ester 13b, and amino alcohol 14b showed antimicrobial activity toward the test microorganisms. The increase in the antimicrobial activity of 10b compared to 1b ranged from 32-fold (S. aureus) to 73-fold (M. luteus). The mean ± standard deviation for the zone of inhibition (mm) for 10b (S. aureus) was 32.0 ± 0.60 and that for M. luteus was 73.2 ± 0.30.

e18322 Background: Though patients (pts) with gynecological cancer are at higher risk of MBO, clinical management is not well defined. We implemented a coordinated team approach to evaluate MBO at Princess Margaret Cancer Centre. The Princess Margaret Cancer Centre inter-professional MBO management program includes nurse led ambulatory symptom management, inpatient treatment algorithm, patient directed bowel management education & MCCs. This study evaluates the utility of MBO MCC on clinical decision making in gynecologic oncology. Methods: Monthly MBO MCCs are conducted to discuss complex clinical management issues. A clinical summary is presented prior to the discussion with each case incorporating radiology review followed by interdisciplinary discussion. In this study, the initial management plan was compared to post-MCC consensus. A change in plan was defined as a consensus plan different from the pre-MCC plan or no definite plan prior to MCC. Barriers to implementation of the consensus were analyzed. Results: From December 2016 to November 2018, 90 pts were discussed in 22 MCCs. Of these, 60 had high grade serous ovarian carcinoma (67%) & 64 had small bowel obstruction (71%). Discussion in MCCs lead to a change in management plan in 49 cases(54%). These changes included recommendations for palliative surgery (25%) or radiation (10%), interventional radiology (23%), pharmacologic management alone (14%), imaging studies (4%) & total parenteral nutrition (TPN) (4%). Chemotherapy continuation, break or regimen changes were recommended in 20%. MCC consensus plan could not be implemented in 11 cases (23%). The barriers were refusal of surgery (8%), interventional radiology procedures (2%), TPN (4%) by patients, functional decline (6%) & inability to create a colostomy due to dense adhesions (2%). During MCC referrals to the dietitian & palliative care team were planned for 16 (18%) & 22 (24%) pts respectively. Conclusions: Interdisciplinary MBO MCCs have a significant impact on decision making in complex MBO cases. Radiology review & group discussion facilitates greater clarity in formulation of a management plan.

The demand for interdisciplinary research is increasing in the new millennium to help us understand complex problems and find solutions by integrating the knowledge from different disciplines. The present review is an excellent example of this and shows how unique combination of physics, chemistry, and biological techniques can be used for the evaluation of Indian medicinal herbs used for treating diabetes mellitus. Laser-induced breakdown spectroscopy (LIBS) is a sensitive optical technique that is widely used for its simplicity and versatility. This review presents the most recent application of LIBS for detection of glycemic elements in medicinal plants. The characteristics of matrices, object analysis, use of laser system, and analytical performances with respect to Indian herbs are discussed.

Psoralea corylifolia (PC), a medicinal plant, is used in traditional medicine to treat diabetes. Purpose of the research was to examine the antidiabetic and antilipemic potential of PC and to determine the relationship between its antidiabetic potential and the trace elements present. Wistar rats (150–200 g) with fasting blood glucose (FBG) of 80–110 mg dl−1(sub-diabetic) and 150–200 mg dl−1(mild diabetic) were selected for the short term antidiabetic studies and severely diabetic rats (FBG > 300 mg dl−1) were chosen for the long term antidiabetic and hypolipemic studies of PC seed extract. Laser induced breakdown spectroscopy (LIBS) was used to detect trace elements in the PC extract and the intensity ratios of trace elements were estimated. The dose of 250 mg kg−1 of PC extract was found to be the most effective in lowering blood glucose level (BGL) of normal, sub, mild and severely diabetic rats during FBG and glucose tolerance test (GTT) studies. Lipid profile studies on severely diabetic rats showed substantial reduction in total cholesterol, triglycerides, very low density lipoprotein, and low density lipoprotein and an increase in the total protein, body weight, high density lipoprotein, and hemoglobin after 28 days of treatment. Significant reduction in urine sugar and protein levels was also observed. LIBS analysis of the PC extract revealed the presence of Mg, Si, Na, K, Ca, Zn and Cl. The study validates the traditional use of PC in the treatment of diabetes and confirms its antilipemic potential. The antidiabetic activity of PC extract may partly be due to the presence of appreciable amounts of insulin potentiating elements like Mg, Ca, and K.

Musca domestica L. is a non-biting nuisance fly that is capable of transmitting a large variety of pathogens to humans and non-human animals. Natural compounds and their derivatives, which are often less toxic than entirely synthetic compounds, may be used as repellents against M. domestica as part of comprehensive pest control and disease mitigation programs. This work investigates the repellent properties of the natural compound α-pinene against M. domestica. Adult house flies of both sexes avoided the volatile plant-derived terpenes (1S)-(-)-α-pinene 1 and (1R)-(+)-α-pinene 2 in constant air flow laboratory conditions, with 1 exhibiting a stronger repellent effect. House flies also avoided tarsal contact with filter paper saturated with 1. Furthermore, both 1 and 2 are electrophysiologically active on in situ female house fly antennal preparations. These findings demonstrate that α-pinene exhibits natural baseline repellency against the house fly, elicits a specific physiological response in this fly, and that functional or structural modification of 1 in particular may yield novel fly repellents with desirable properties.

α-Pinene, a rigid bicyclic monoterpene, was altered by functional group transformations and the antimicrobial activity of the resulting compounds was studied using thin layer chromatography-autobiographic assay to determine the effect of structure on antimicrobial activity. Except for α-pinanone (and α-pinene oxide in two cases), all oxygenated α-pinene derivatives showed greater antimicrobial activity against Escherichia coli, Staphylococcus aureus, Micrococcus luteus and Candida albicans than α-pinene. Conformationally flexible methyl cyclohexene and some of its oxygenated derivatives were also tested to evaluate the role of carbon skeleton in determining the antimicrobial activity. The results indicate that both functional groups and carbon skeleton affect the antimicrobial activity of the compound and adding nitrogen to the carbon framework increases the antimicrobial activity. The results also confirm that introduction of oxygen function to the carbon framework increases antimicrobial activity.

158 Background: Malignant bowel obstruction (MBO) is a common and challenging clinical predicament in women with advanced gynecological cancers. However, there is a lack of evidence-based guidelines or innovative approaches to improve patient care and quality of life. We implemented an inter-professional MBO management program incorporating a nurse-led ambulatory symptom management algorithm and multidisciplinary care conferences (MCC) as hallmarks of this program. Methods: Princess Margaret Cancer Centre has piloted an inter-professional MBO management program that supports women with advanced gynecological cancers who are at risk of/have developed MBO. The MBO team includes oncologists (medical, surgical, gynecologic and radiation), palliative care physicians, diagnostic and interventional radiologists, home parenteral nutrition physicians, specialized oncology nurses, dietitians, pharmacists and social workers. Complex MBO cases are discussed at regular MCC to derive treatment consensus. A symptom-driven MBO management algorithm has been devised and all patients are educated with a personalized bowel symptom management and dietary plan. For outpatient care, patients with MBO are proactively monitored by our specialized oncology nurses via phone or an eHealth bowel application to facilitate communication of symptoms and early intervention. Access to community services and home palliative care services are utilized to support care at home. All patients are enrolled into a prospective database to assess care impact and quality. Results: A total of 145 patients have been followed through the MBO management program over 12 months. At time of data cutoff, 14 had MBO (3 inpatients and 11 outpatients) and 22 were deemed at risk of MBO. Majority patients are managed as an outpatient and avoided unnecessary emergency department episodes. Detailed methodology and data analyses will be presented. Conclusions: A successful novel MBO program incorporating inter-professional care model and nurse-led ambulatory symptom management algorithm optimizes patient care in this vulnerable population and foster collaboration in implementing best practice clinical processes.

The diazirine 1, upon thermolysis or photolysis in either acetone or cyclohexanone, at different concentrations, yield the spiro epoxides 2 and 3, and 4 and 5, respectively (Scheme 1). Yield of 2 and 3 depended both on the temperature and the concentration, and correlated inversely with the yield of the major by-product, the enol-derived glycoside 6. Other by-product were the benzyloxglycal7 and the lactone azines 8. ZnCl2-Promoted methanolysis of 2 under mild condition yielded mixture of the uloside 9 and 10 (1.2:1); similarly, 4 yielded 11 and 12 (1.8:1; Scheme 2). More strongly acidic conditions converted 11 into 12, evidencing that ZnCl2-promoted methanolysis proceeds under kinetic control, which is rationalized. The diazirine 13, upon thermolysis of Photolysis in either acetone of cyclohexanone, yielded the α-D-configurated spiro epoxides 14 and 16, and the α-D-configurated dihydrooxazoles 15 and 17, respectively (Scheme 3), which are either formed by ring-opening of s-D-epoxides, by competitive interception of the initially formed, hypothetical addition products of the intermediate carbene to the ketones. The glycosylidene carbenes, derived from 1 or 13 are not very reactive towards ketones, yields are good only when sterically unhindered ketones are used in large excess.

Piperidinium tetrathiotungstate has been found to react with a number of 1,n-dihalo compounds to afford the corresponding cyclic disulfides in good yields, under mild reaction conditions. This new methodology has been used as a key step in the synthesis of (+/-)-lipoic acid (35) and asparagusic acid (37).

The diazirine 1, upon thermolysis or photolysis in either acetone or cyclohexanone, at different concentrations, yield the spiro epoxides 2 and 3, and 4 and 5, respectively (Scheme 1). Yield of 2 and 3 depended both on the temperature and the concentration, and correlated inversely with the yield of the major by-product, the enol-derived glycoside 6. Other by-product were the benzyloxglycal7 and the lactone azines 8. ZnCl2-Promoted methanolysis of 2 under mild condition yielded mixture of the uloside 9 and 10 (1.2:1); similarly, 4 yielded 11 and 12 (1.8:1; Scheme 2). More strongly acidic conditions converted 11 into 12, evidencing that ZnCl2-promoted methanolysis proceeds under kinetic control, which is rationalized. The diazirine 13, upon thermolysis of Photolysis in either acetone of cyclohexanone, yielded the α-D-configurated spiro epoxides 14 and 16, and the α-D-configurated dihydrooxazoles 15 and 17, respectively (Scheme 3), which are either formed by ring-opening of s-D-epoxides, by competitive interception of the initially formed, hypothetical addition products of the intermediate carbene to the ketones. The glycosylidene carbenes, derived from 1 or 13 are not very reactive towards ketones, yields are good only when sterically unhindered ketones are used in large excess.

Piperidinium tetrathiotungstate has been found to react with a number of 1,n-dihalo compounds to afford the corresponding cyclic disulfides in good yields, under mild reaction conditions. This new methodology has been used as a key step in the synthesis of (+/-)-lipoic acid (35) and asparagusic acid (37).

Procedures to assess tobacco smoke exposure are reviewed and biomarkers used for determining the smoking status of an individual are compared. Methods used to extract these biomarkers from saliva, urine, and blood and the advantages and disadvantages of the assays are discussed. Finally, the procedures used to measure the levels of cortisol, a stress hormone speculated to be linked to nicotine metabolism, are discussed.

In an unusually novel reaction, piperidinium tetrathiotungstate has been found to induce reductive dimerization of a variety of sulfonyl derivatives to the corresponding disulfides under very mild conditions

In an unusually novel reaction, piperidinium tetrathiotungstate has been found to induce reductive dimerization of a variety of sulfonyl derivatives to the corresponding disulfides under very mild conditions

L'alkylation de tetrathiotungstate et de tetrathiomolybdatede piperidinium permet la synthese, en conditions douces, de disulfures organiques

L'alkylation de tetrathiotungstate et de tetrathiomolybdatede piperidinium permet la synthese, en conditions douces, de disulfures organiques