Celery

This publication guide to eating, selecting, cooking, and storing celery

Starting and Sustaining Successful Faculty Development Programs at Small Colleges

This chapter complements a recent chapter in To Improve the Academy by Mooney and Reder (2008) that discusses the distinctive features and challenges of faculty development at small and liberal arts colleges. As a continuation and expansion of that more conceptual discussion, we aim to convey practical strategies for relatively new faculty developers at small institutions with incipient programs. The suggestions offered in this chapter are grounded in our experiences as faculty developers at liberal arts colleges and developed through numerous national conference presentations and conversations with colleagues in the field over the past decade. Although our recommendations are particularly salient for faculty developers working in a small college setting, our ideas should be applicable across institutional types

The Trypanosoma cruzi enzyme TcGPXI is a glycosomal peroxidase and can be linked to trypanothione reduction by glutathione or tryparedoxin.

Trypanosoma cruzi glutathione-dependent peroxidase I (TcGPXI) can reduce fatty acid, phospholipid, and short chain organic hydroperoxides utilizing a novel redox cycle in which enzyme activity is linked to the reduction of trypanothione, a parasite-specific thiol, by glutathione. Here we show that TcGPXI activity can also be linked to trypanothione reduction by an alternative pathway involving the thioredoxin-like protein tryparedoxin. The presence of this new pathway was first detected using dialyzed soluble fractions of parasite extract. Tryparedoxin was identified as the intermediate molecule following purification, sequence analysis, antibody studies, and reconstitution of the redox cycle in vitro. The system can be readily saturated by trypanothione, the rate-limiting step being the interaction of trypanothione with the tryparedoxin. Both tryparedoxin and TcGPXI operate by a ping-pong mechanism. Overexpression of TcGPXI in transfected parasites confers increased resistance to exogenous hydroperoxides. TcGPXI contains a carboxyl-terminal tripeptide (ARI) that could act as a targeting signal for the glycosome, a kinetoplastid-specific organelle. Using immunofluorescence, tagged fluorescent proteins, and biochemical fractionation, we have demonstrated that TcGPXI is localized to both the glycosome and the cytosol. The ability of TcGPXI to use alternative electron donors may reflect their availability at the corresponding subcellular sites

Head and neck squamous cell carcinoma in pregnant women

Background The aim of this study was to investigate oral cancer in pregnant women, a rare but therapeutically challenging patient subset. Methods After institutional review board approval, an EMERSE search was used to identify all women treated at the University of Michigan from 1998 to 2010 with head and neck squamous cell carcinoma (HNSCC) during pregnancy. This identified 4 patients with tongue cancer. Biomarkers and human papillomavirus (HPV) were assessed by immunohistochemistry and multiplex PCR/mass spectrometry, respectively. Results Two patients responded well to therapy and are alive more than 10 years after diagnosis; 2 patients died of disease. All tumors overexpressed EGFR and Bcl‐xL, 3 of 4 overexpressed c‐Met, both tumors that progressed overexpressed p53. All tumors were negative for HPV, p16, estrogen receptor, progesterone receptor, and HER‐2. Conclusions Biomarkers of aggressive tumors (high EGFR, c‐Met; high Bcl‐xL‐low p53) did not correlate with outcome. Additional studies are needed to determine whether perineural invasion, delay in diagnosis, and p53 overexpression are factors in poor survival. © 2012 Wiley Periodicals, Inc. Head Neck, 2013Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/96700/1/22973_ftp.pd

Identification of the occurrence and pattern of masseter muscle activities during sleep using EMG and accelerometer systems

<p>Abstract</p> <p>Background</p> <p>Sleep bruxism has been described as a combination of different orofacial motor activities that include grinding, clenching and tapping, although accurate distribution of the activities still remains to be clarified.</p> <p>Methods</p> <p>We developed a new system for analyzing sleep bruxism to examine the muscle activities and mandibular movement patterns during sleep bruxism. The system consisted of a 2-axis accelerometer, electroencephalography and electromyography. Nineteen healthy volunteers were recruited and screened to evaluate sleep bruxism in the sleep laboratory.</p> <p>Results</p> <p>The new system could easily distinguish the different patterns of bruxism movement of the mandible and the body movement. Results showed that grinding (59.5%) was most common, followed by clenching (35.6%) based on relative activity to maximum voluntary contraction (%MVC), whereas tapping was only (4.9%).</p> <p>Conclusion</p> <p>It was concluded that the tapping, clenching, and grinding movement of the mandible could be effectively differentiated by the new system and sleep bruxism was predominantly perceived as clenching and grinding, which varied between individuals.</p

Comparison of experimental stresses and deflections with those predicted by a strain energy method for an F8U-3 wing loaded in torsion

The stress level in the milled skin at the root of a tapered, multicell swept wing is predicted by means of a matrix-force method. The solution is achieved by minimizing the internal strain energy, and the results compared with experimental tests. A single loading, consisting of a nose-up couple, is applied to each tip rib. The loading is transferred from the tip rib to an idealized structure by means of simple torsion theory. The idealized structure represents the inboard one-half of each semi-span. Results indicate that an accurate solution of the stress distribution in the actual wing can be achieved provided that the root boundary conditions are preserved. An extension of the analysis is suggested in order to more closely define the maximum accuracy inherent in the particular matrix-force method of solution.http://www.archive.org/details/comparisonofexpe00holgLieutenant Commander, United States NavyCaptain, United States Marine CorpsApproved for public release; distribution is unlimited

A Review of Bicarbonate Use in Common Clinical Scenarios

BackgroundThe use of sodium bicarbonate to treat metabolic acidosis is intuitive, yet data suggest that not all patients benefit from this therapy.ObjectiveIn this narrative review, we describe the physiology behind commonly encountered nontoxicologic causes of metabolic acidosis, highlight potential harm from the indiscriminate administration of sodium bicarbonate in certain scenarios, and provide evidence-based recommendations to assist emergency physicians in the rational use of sodium bicarbonate.DiscussionSodium bicarbonate can be administered as a hypertonic push, as a resuscitation fluid, or as an infusion. Lactic acidosis and cardiac arrest are two common scenarios where there is limited benefit to routine use of sodium bicarbonate, although certain circumstances, such as patients with concomitant acute kidney injury and lactic acidosis may benefit from sodium bicarbonate. Patients with cardiac arrest secondary to sodium channel blockade or hyperkalemia also benefit from sodium bicarbonate therapy. Recent data suggest that the use of sodium bicarbonate in diabetic ketoacidosis does not confer improved patient outcomes and may cause harm in pediatric patients. Available evidence suggests that alkalinization of urine in rhabdomyolysis does not improve patient-centered outcomes. Finally, patients with a nongap acidosis benefit from sodium bicarbonate supplementation.ConclusionsEmpiric use of sodium bicarbonate in patients with nontoxicologic causes of metabolic acidosis is not warranted and likely does not improve patient-centered outcomes, except in select scenarios. Emergency physicians should reserve use of this medication to conditions with clear benefit to patients