578 results on '"Dierks, E."'
Search Results
2. Interdisciplinary prosthetic rehabilitation following bilateral maxillectomy with total upper lip and unilateral zygoma resection: A clinical report.
- Author
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Over LM and Dierks E
- Subjects
- Humans, Palatal Obturators, Magnets, Maxilla surgery, Zygoma surgery, Lip surgery
- Abstract
This clinical report describes the design and fabrication of an implant-retained and soft-tissue-supported obturator prosthesis and a magnetic retained midfacial prosthesis for a patient with a midfacial defect following bilateral total maxillectomy, removal of the left zygoma, and excision of the entire upper lip. The patient underwent multiple head and neck surgeries for 4 separate primary oral cancers, 1 recurrence, and 1 pulmonary metastasis. The definitive obturator prosthesis was retained by 1 zygomatic implant with soft-tissue support and retention. The midfacial prosthesis was attached to the obturator prosthesis with magnets, improving appearance and the recovery of significant aspects of the patient's speech and swallowing. Some improvement in mastication was observed., (Copyright © 2022 Editorial Council for The Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
3. Predictors of Intraoperative Difficulty and Postoperative Examination Abnormalities in 164 Orbital Operations.
- Author
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Govind A, Demirel S, Lee K, Amundson M, Bell RB, and Dierks E
- Subjects
- Humans, Male, Adult, Female, Orbit diagnostic imaging, Orbit surgery, Retrospective Studies, Tomography, X-Ray Computed, Treatment Outcome, Orbital Fractures diagnostic imaging, Orbital Fractures surgery, Orbital Fractures complications, Enophthalmos surgery
- Abstract
Background: Although orbital fractures are common, prediction of outcomes in orbital surgery can be quite challenging., Purpose: We aim to identify predictors of intraoperative difficulty, operating time, and postoperative examination abnormalities in subjects undergoing post-traumatic orbital reconstructions., Study Design, Setting, and Sample: This is a retrospective cohort study of all consecutive orbital operations performed at a private, Level 1 trauma center in Portland, Oregon, USA over an 82-month period. All subjects that underwent exploration of the internal orbit for traumatic indications during the study period were included in the cohort., Predictor Variables: Four plating styles, surgical approach (transorbital vs transantral), days from injury to first surgery, fracture size (approximated as a rectangle using linear measurements from computed tomography scans), anteroposterior fracture position, and medial wall involvement were examined., Outcome Variables: The primary outcome variable was intraoperative difficulty (defined as requiring revision after intraoperative imaging or return to the operating room). Secondary outcome variables included operating time and postoperative examination abnormalities., Covariates: Age and sex were included., Analyses: χ
2 and Regression analyses were performed using a significance level of P < .05., Results: One hundred and sixty four orbital operations were performed (90 isolated injuries and 74 combined orbital/midface injuries) on 155 subjects (73% male, mean age 39.8 years, standard deviation 16.7). In subjects with isolated orbital fractures, medial wall involvement was associated with intraoperative difficulty (P = .01). When using a transantral approach, intraoperative difficulty was more likely in more anterior fractures (P = .02). Plating style was associated with operating time (P = .03), with median times from 81 to 105 minutes (range 21 to 248 minutes). Postoperative examination abnormalities were more likely in the transorbital approach group (P = .01). Neither days to first surgery nor intraoperative difficulty were associated with postoperative examination abnormalities. Postoperative eyelid changes were seen in 13.6% of transorbital approaches and 0% of transantral approaches. Correction of gaze restriction and enophthalmos were more likely than correction of diplopia (P < .01)., Conclusions and Relevance: Medial wall involvement is associated with intraoperative difficulty in orbital surgery. Anteriorly positioned fractures are better treated transorbitally, while posterior fractures may be amenable to transantral repair, thus avoiding risk of lower eyelid changes., (Copyright © 2023 American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.)- Published
- 2023
- Full Text
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4. Discovery of novel pyridinones as MGAT2 inhibitors for the treatment of metabolic disorders.
- Author
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Moore F, Wang W, Zhao G, Mignone J, Meng W, Chu CH, Ma Z, Azzara A, Cullen MJ, Pelleymounter MA, Appiah K, Cvijic ME, Dierks E, Chang S, Foster K, Kopcho L, O'Malley K, Li YX, Khandelwal P, Whaley JM, Mathur A, Hou X, Wu DR, Robl JA, Cheng D, and Devasthale P
- Subjects
- Humans, Enzyme Inhibitors pharmacology, Enzyme Inhibitors therapeutic use, Enzyme Inhibitors chemistry, Obesity drug therapy, Monoglycerides, Metabolic Diseases drug therapy
- Abstract
Inhibition of monoacylglycerol transferase 2 (MGAT2) has recently emerged as a potential therapeutic strategy for the treatment of metabolic diseases such as obesity, diabetes and non-alcoholic steatohepatitis (NASH). Metabolism studies with our clinical lead (1) suggested variability in in vitro glucuronidation rates in liver microsomes across species, which made projection of human doses challenging. In addition, the observation of deconjugation of the C3-C4 double bond in the dihydropyridinone ring of 1 in solution had the potential to complicate its clinical development. This report describes our lead optimization efforts in a novel pyridinone series, exemplified by compound 33, which successfully addressed both of these potential issues., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
5. Structure-activity relationship study of central pyridine-derived TYK2 JH2 inhibitors: Optimization of the PK profile through C4' and C6 variations.
- Author
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Xiao Z, Yang MG, Liu C, Sherwood T, Gilmore JL, Lin J, Li P, Wu DR, Tokarski J, Li S, Cheng L, Xie C, Fan J, Dierks E, Strnad J, Cvijic ME, Khan J, Ruzanov M, Galella M, Khandelwal P, Dyckman AJ, Mathur A, Lombardo LJ, Macor JE, Carter PH, Aranibar N, Burke JR, and Weinstein DS
- Subjects
- Mice, Animals, Structure-Activity Relationship, TYK2 Kinase, Pyridines pharmacology
- Abstract
Efforts directed at improving potency and preparing structurally different TYK2 JH2 inhibitors from the first generation of compounds such as 1a led to the SAR study of new central pyridyl based analogs 2-4. The current SAR study resulted in the identification of 4h as a potent and selective TYK2 JH2 inhibitor with distinct structural differences from 1a. In this manuscript, the in vitro and in vivo profiles of 4h are described. The hWB IC
50 of 4h was shown as 41 nM with 94% bioavailability in the mouse PK study., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)- Published
- 2023
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6. 2420Effects of a selective small-molecule formyl peptide receptor 2 agonist on post myocardial inflammation and left ventricular structure-function relationships
- Author
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Garcia, R A, primary, Lupisella, J A, additional, Zhang, R, additional, Carson, N L, additional, Wang, Z, additional, Hsu, M Y, additional, Fernando, G, additional, Ryan, C S, additional, Dierks, E, additional, Asahina, Y, additional, Kohno, Y, additional, Wurtz, N R, additional, Ostrowski, J, additional, Ito, B R, additional, and Villarreal, F J, additional
- Published
- 2019
- Full Text
- View/download PDF
7. Screening Hit to Clinical Candidate: Discovery of BMS-963272, a Potent, Selective MGAT2 Inhibitor for the Treatment of Metabolic Disorders.
- Author
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Turdi H, Chao H, Hangeland JJ, Ahmad S, Meng W, Brigance R, Zhao G, Wang W, Moore F, Ye XY, Mathur A, Hou X, Kempson J, Wu DR, Li YX, Azzara AV, Ma Z, Chu CH, Chen L, Cullen MJ, Rooney S, Harvey S, Kopcho L, Panemangelor R, Abell L, O'Malley K, Keim WJ, Dierks E, Chang S, Foster K, Apedo A, Harden D, Dabros M, Gao Q, Pelleymounter MA, Whaley JM, Robl JA, Cheng D, Lawrence RM, and Devasthale P
- Subjects
- Animals, Crystallography, X-Ray, Enzyme Inhibitors chemistry, Enzyme Inhibitors therapeutic use, Humans, Structure-Activity Relationship, Drug Discovery, Enzyme Inhibitors pharmacology, High-Throughput Screening Assays methods, Metabolic Diseases drug therapy, N-Acetylglucosaminyltransferases antagonists & inhibitors
- Abstract
MGAT2 inhibition is a potential therapeutic approach for the treatment of metabolic disorders. High-throughput screening of the BMS internal compound collection identified the aryl dihydropyridinone compound 1 (hMGAT2 IC
50 = 175 nM) as a hit. Compound 1 had moderate potency against human MGAT2, was inactive vs mouse MGAT2 and had poor microsomal metabolic stability. A novel chemistry route was developed to synthesize aryl dihydropyridinone analogs to explore structure-activity relationship around this hit, leading to the discovery of potent and selective MGAT2 inhibitors 21f , 21s , and 28e that are stable to liver microsomal metabolism. After triaging out 21f due to its inferior in vivo potency, pharmacokinetics, and structure-based liabilities and tetrazole 28e due to its inferior channel liability profile, 21s (BMS-963272) was selected as the clinical candidate following demonstration of on-target weight loss efficacy in the diet-induced obese mouse model and an acceptable safety and tolerability profile in multiple preclinical species.- Published
- 2021
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8. Does the Lack of Gender-Specific Apnea-Hypopnea Index Cutoff for Obstructive Sleep Apnea Impact Surgical Selection?
- Author
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Chang CP, Dierks E, Cheng A, Ma Y, and Liu SY
- Subjects
- Adolescent, Adult, Body Mass Index, Cross-Sectional Studies, Female, Humans, Male, Polysomnography, Retrospective Studies, Sleep Apnea, Obstructive diagnosis
- Abstract
Purpose: The apnea-hypopnea index (AHI) is the parameter on which the severity of obstructive sleep apnea (OSA) is based and is also the determinant for both clinicians and third-party payers for surgical procedures. The purpose of this retrospective cross-sectional chart review is to examine differences in symptoms and AHI between men and women with OSA and whether this may impact timing and selection of surgical care., Methods: Retrospective cross-sectional study of patients aged 18 years and older who presented at a single center for surgical evaluation of OSA from January 2017 to 2020. AHI, oxygen desaturation index, respiratory disturbance index, and lowest oxygen saturation were obtained from polysomnography. The predictor variable was gender, and the outcome variable was AHI. Unadjusted and multivariate adjusted linear regression models were used to compare differences in AHI between gender, controlling for age, body mass index (BMI), Epworth sleepiness scale, and fatigue severity scale. Poisson regression analysis with robust error was used to assess the relative risks of antidepressant and anxiolytic medication use between genders., Results: A total of 408 consecutive new patients seen for surgical evaluation to treat OSA (248 men and 160 women) were included. Median patient age was 40 years for men and 41 years for women. Median AHI for men was 22.1 events per hour and 13.7 for women (P < .001). When adjusted for age and BMI, men have 33.2% higher AHI than women, with age contributing to 2% and BMI contributing to 6% of the difference. When controlling for age, BMI, Epworth sleepiness scale, and fatigue severity scale, women have a 2.2 increased relative risk of taking anxiolytic or antidepressant medications., Conclusions: Women with OSA seeking surgery in a dedicated sleep practice have 33% lower AHI than men when controlling for age, BMI, and symptoms. Based on our findings, non-gender-specific AHI may handicap the surgeon from offering the full range of available procedures to women with OSA., (Copyright © 2020. Published by Elsevier Inc.)
- Published
- 2021
- Full Text
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9. Preservation of Post-Infarction Cardiac Structure and Function via Long-Term Oral Formyl Peptide Receptor Agonist Treatment.
- Author
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García RA, Ito BR, Lupisella JA, Carson NA, Hsu MY, Fernando G, Heroux M, Bouvier M, Dierks E, Kick EK, Gordon DA, Chen J, Mintier G, Carrier M, St-Onge S, Shah H, Towne J, Bucardo MS, Ma X, Ryan CS, Wurtz NR, Ostrowski J, and Villarreal FJ
- Abstract
Dysregulated inflammation following myocardial infarction (MI) promotes left ventricular (LV) remodeling and loss of function. Targeting inflammation resolution by activating formyl peptide receptors (FPRs) may limit adverse remodeling and progression towards heart failure. This study characterized the cellular and signaling properties of Compound 43 (Cmpd43), a dual FPR1/FPR2 agonist, and examined whether Cmpd43 treatment improves LV and infarct remodeling in rodent MI models. Cmpd43 stimulated FPR1/2-mediated signaling, enhanced proresolution cellular function, and modulated cytokines. Cmpd43 increased LV function and reduced chamber remodeling while increasing proresolution macrophage markers. The findings demonstrate that FPR agonism improves cardiac structure and function post-MI., (© 2019 The Authors.)
- Published
- 2019
- Full Text
- View/download PDF
10. Four Practical Reconstructive Techniques Using the Transantral Approach to the Orbital Floor Without the Need for an Endoscope.
- Author
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Govind A, Dierks E, Bell RB, and Amundson M
- Subjects
- Endoscopes, Humans, Orbit, Endoscopy, Orbital Fractures surgery, Plastic Surgery Procedures
- Abstract
Fractures of the orbital floor have traditionally been treated through transorbital approaches. Transconjunctival approaches risk entropion, whereas transcutaneous approaches risk ectropion or hypertrophic scarring. The intraoral transantral approach to the orbital floor has the advantage of minimizing the risk of any eyelid changes while providing appropriate access to reduce the herniated orbital contents and restore orbital volume. This article describes 4 plating methods for reconstructing a fractured orbital floor using a transantral approach. Many prior descriptions of transantral treatment of the orbital floor have relied heavily on the use of an endoscope. This article describes an osteotomy technique that does not require an endoscope but requires only a high-quality headlight for visualization., (Copyright © 2019 American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
- Full Text
- View/download PDF
11. Biased receptor signalling and intracellular trafficking profiles of structurally distinct formylpeptide receptor 2 agonists.
- Author
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Peng C, Vecchio EA, Nguyen ATN, De Seram M, Tang R, Keov P, Woodman OL, Chen YC, Baell J, May LT, Zhao P, Ritchie RH, and Qin CX
- Abstract
Background: There is increasing interest in developing FPR2 agonists (compound 43, ACT-389949 and BMS-986235) as potential pro-resolving therapeutics, with ACT-389949 and BMS-986235 having entered phase I clinical development. FPR2 activation leads to diverse downstream outputs. ACT-389949 was observed to cause rapid tachyphylaxis, while BMS-986235 and compound 43 induced cardioprotective effects in preclinical models. We aim to characterise the differences in ligand-receptor engagement and downstream signalling and trafficking bias profile., Experimental Approach: Concentration-response curves to G protein dissociation, β-arrestin recruitment, receptor trafficking and second messenger signalling were generated using FPR2 ligands (BMS-986235, ACT-389949, compound 43 and WKYMVm), in HEK293A cells. Log(τ/K
A ) was obtained from the operational model for bias analysis using WKYMVm as a reference ligand. Docking of FPR2 ligands into the active FPR2 cryoEM structure (PDBID: 7T6S) was performed using ICM pro software., Key Results: Bias analysis revealed that WKYMVm and ACT-389949 shared a very similar bias profile. In comparison, BMS-986235 and compound 43 displayed approximately 5- to 50-fold bias away from β-arrestin recruitment and trafficking pathways, while being 35- to 60-fold biased towards cAMP inhibition and pERK1/2. Molecular docking predicted key amino acid interactions at the FPR2 shared between WKYMVm and ACT-389949, but not with BMS-986235 and compound 43., Conclusion and Implications: In vitro characterisation demonstrated that WKYMVm and ACT-389949 differ from BMS-986235 and compound 43 in their signalling and protein coupling profile. This observation may be explained by differences in the ligand-receptor interactions. In vitro characterisation provided significant insights into identifying the desired bias profile for FPR2-based pharmacotherapy., (© 2024 The Author(s). British Journal of Pharmacology published by John Wiley & Sons Ltd on behalf of British Pharmacological Society.)- Published
- 2024
- Full Text
- View/download PDF
12. Recommendations for Care of Geriatric Maxillofacial Trauma Patients Following a Retrospective 10-Year Multicenter Review.
- Author
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Shumate R, Portnof J, Amundson M, Dierks E, Batdorf R, and Hardigan P
- Subjects
- Accidental Falls statistics & numerical data, Aged, Aged, 80 and over, Female, Florida epidemiology, Humans, Male, Maxillofacial Injuries diagnostic imaging, Maxillofacial Injuries epidemiology, Oregon epidemiology, Retrospective Studies, Risk Factors, Tomography, X-Ray Computed, Trauma Centers, Maxillofacial Injuries therapy
- Abstract
Purpose: The purpose of this study was to analyze maxillofacial trauma sustained by patients at least 75 years old. With the injury patterns identified, treatment recommendations for the contemporary oral and maxillofacial surgeon are made., Patients and Methods: This study was a retrospective case series using data from 2 level 1 trauma centers. The variables of interest included age at traumatic event, gender, mechanism of trauma, concomitant injuries, radiographic studies performed, management of maxillofacial injuries, and disposition. Numerical analysis was completed with statistical software., Results: One hundred seventy-six patients at least 75 years old who sustained facial trauma were identified. Ground-level falls caused most cases of maxillofacial trauma in the geriatric population. The median age at the time of trauma was 83 and 85 years for men and women, respectively. The most common injuries were midface fractures. Intracranial hemorrhage was the most common concomitant injury, and all but 1 patient underwent computed tomography of at least the head after their traumatic event. Most maxillofacial injuries were treated without operative repair., Conclusions: The information gained from this study suggests that oral and maxillofacial surgeons should counsel geriatric patients on the risk of falls and encourage the prevention of potential hazards for falls in their homes., (Copyright © 2018. Published by Elsevier Inc.)
- Published
- 2018
- Full Text
- View/download PDF
13. Assessment of pre-operative maropitant citrate use in macaque (Macaca fasicularis & Macaca mulatta) neurosurgical procedures.
- Author
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Steinbach JR, MacGuire J, Chang S, Dierks E, and Roble GS
- Subjects
- Animals, Antiemetics pharmacokinetics, Male, Preoperative Period, Prospective Studies, Quinuclidines pharmacokinetics, Retrospective Studies, Antiemetics adverse effects, Macaca fascicularis surgery, Macaca mulatta surgery, Monkey Diseases prevention & control, Postoperative Nausea and Vomiting prevention & control, Quinuclidines adverse effects
- Abstract
Background: Retrospective analysis of post-operative vomiting (POV) in non-human primates at our institution was 11%. Based on this additional risk factor for post-operative complications, we aimed to eliminate or decrease POV by adding an antiemetic, maropitant citrate, to the pre-medication protocol., Methods: Retrospective and prospective data were collected over a 5-year period from 46 macaques of two species during 155 procedures. Additionally, blood was collected from five Macaca mulatta to perform a pharmacokinetic analysis., Results: A 1 mg/kg subcutaneous dose of maropitant given pre-operatively significantly decreased POV. Findings indicated post-neurosurgical emesis in Macaca fasicularis was significantly greater than in Macaca mulatta. Pharmacokinetic analysis of maropitant in Macaca mulatta determined the mean maximum plasma concentration to be 113 ng/mL., Conclusions: Maropitant administration prior to anesthesia for neurosurgeries decreased our incidence of POV to 1%. The plasma concentration reaches the proposed plasma level for clinical efficacy approximately 20 minutes after administration., (© 2018 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2018
- Full Text
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14. Necrotizing fasciitis of the midface: a review of the literature and report of a case with prepuce skin graft reconstruction of the eyelids
- Author
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Malan, J.P., primary, Dierks, E., additional, and Giesy, J., additional
- Published
- 2011
- Full Text
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15. Subcranial Navigation-Assisted Repair of Frontobasal Skull Fractures
- Author
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Gelesko, S., primary, Bell, R., additional, Dierks, E., additional, and Potter, B., additional
- Published
- 2011
- Full Text
- View/download PDF
16. Poster 19: Utilization and Avoidance Patterns of Lip Splitting Mandibulotomy for Oral and Oropharyngeal Tumor Access in a Maxillofacial-Oriented Unit
- Author
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Cobb, G., primary, Dierks, E., additional, Bell, R., additional, and Potter, B., additional
- Published
- 2011
- Full Text
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17. Poster 20: Transoral Robotic Surgery (TORS): Avoiding Notches in the the Learning Curve
- Author
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Dierks, E., primary, Bell, R., additional, Bui, T., additional, and Cobb, G., additional
- Published
- 2011
- Full Text
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18. 1-Aminobenzotriazole, a Known Cytochrome P450 Inhibitor, Is a Substrate and Inhibitor ofN-Acetyltransferase
- Author
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Sun, Q., primary, Harper, T. W., additional, Dierks, E. A., additional, Zhang, L., additional, Chang, S., additional, Rodrigues, A. D., additional, and Marathe, P., additional
- Published
- 2011
- Full Text
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19. Operational Limits of a Commercial Gate Turn-Off Thyristor for Inductive-Store Systems
- Author
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Sitzman, A., primary, Surls, D., additional, Mallick, J., additional, and Dierks, E., additional
- Published
- 2011
- Full Text
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20. P313 Transcervical resection of parapharyngeal pleomorphic adenomas
- Author
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Poon, A., primary, Bell, B., additional, Potter, J., additional, Potter, B., additional, and Dierks, E., additional
- Published
- 2007
- Full Text
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21. Does site affect survival in patients with oral squamous cell carcinoma?
- Author
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Bell, R., primary, Kademani, D., additional, Dierks, E., additional, and Potter, B., additional
- Published
- 2005
- Full Text
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22. Tracheostomy and maxillofacial trauma at a level one trauma center
- Author
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Holmgren, E., primary, Bagheri, S., additional, Bobek, S., additional, and Dierks, E., additional
- Published
- 2005
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23. Resorbable Suture as Wound Drain.
- Author
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Dierks E and Harper G
- Subjects
- Absorbable Implants, Humans, Drainage methods, Suture Techniques, Sutures
- Abstract
The placement of a resorbable suture on one edge of a wound can effectively retard the mucosal closure of the defect and thereby duplicate the function of a passive surgical drain. The placement of a double or triple loop of a resorbable suture such as chromic gut on one side of the wound edge can provide an inexpensive and self-eliminating wound drain., (Copyright © 2016 American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.)
- Published
- 2017
- Full Text
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24. Sensory nerve conduction study of the mental nerve.
- Author
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Deeb, George R., Dierks, Eric, So, Yuen T., Deeb, G R, Dierks, E, and So, Y T
- Published
- 2000
- Full Text
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25. Enhanced Diagnostic Precision: Assessing Tumor Differentiation in Head and Neck Squamous Cell Carcinoma Using Multi-Slice Spiral CT Texture Analysis.
- Author
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de Oliveira, Lays Assolini Pinheiro, Lopes, Diana Lorena Garcia, Gomes, João Pedro Perez, da Silveira, Rafael Vinicius, Nozaki, Daniel Vitor Aguiar, Santos, Lana Ferreira, Castellano, Gabriela, de Castro Lopes, Sérgio Lúcio Pereira, and Costa, Andre Luiz Ferreira
- Subjects
TEXTURE analysis (Image processing) ,COMPUTER-aided diagnosis ,MEDIAN (Mathematics) ,COMPUTED tomography ,SQUAMOUS cell carcinoma - Abstract
This study explores the efficacy of texture analysis by using preoperative multi-slice spiral computed tomography (MSCT) to non-invasively determine the grade of cellular differentiation in head and neck squamous cell carcinoma (HNSCC). In a retrospective study, MSCT scans of patients with HNSCC were analyzed and classified based on its histological grade as moderately differentiated, well-differentiated, or poorly differentiated. The location of the tumor was categorized as either in the bone or in soft tissues. Segmentation of the lesion areas was conducted, followed by texture analysis. Eleven GLCM parameters across five different distances were calculated. Median values and correlations of texture parameters were examined in relation to tumor differentiation grade by using Spearman's correlation coefficient and Kruskal–Wallis and Dunn tests. Forty-six patients were included, predominantly female (87%), with a mean age of 66.7 years. Texture analysis revealed significant parameter correlations with histopathological grades of tumor differentiation. The study identified no significant age correlation with tumor differentiation, which underscores the potential of texture analysis as an age-independent biomarker. The strong correlations between texture parameters and histopathological grades support the integration of this technique into the clinical decision-making process. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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26. 1-Aminobenzotriazole, a Known Cytochrome P450 Inhibitor, Is a Substrate and Inhibitor of N-Acetyltransferase
- Author
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Sun, Q., Harper, T. W., Dierks, E. A., Zhang, L., Chang, S., Rodrigues, A. D., and Marathe, P.
- Abstract
1-Aminobenzotriazole (ABT) has been used widely as a nonselective in vitro and in vivo inhibitor of cytochrome P450 enzymes. To date, however, it has not been evaluated as an inhibitor of UDP-glucuronosyltransferase (UGT), sulfotransferase (SULT), and N-acetyltransferase (NAT). In the present study, ABT was shown not to inhibit UGT and SULT activity (acetaminophen and 7-hydroxycoumarin as substrates) in rat liver microsomes and rat liver 9000g supernatant fraction (RLS9), respectively. However, it did inhibit the RLS9-catalyzed N-acetylation of procainamide (IC50∼ 30 µM), and no preincubation time dependence was evident. In agreement, oral ABT (100 mg/kg, 2 h predose) decreased the clearance of intravenous procainamide (45%) in rats, accompanied by a decreased N-acetylprocainamide-to-procainamide ratio in urine (0.74 versus 0.21) and plasma (area under the curve ratio 0.59 versus 0.11). Additional studies with human forms of NAT (hNAT1 and hNAT2) revealed that ABT is a more potent inhibitor of hNAT2 compared with hNAT1 (IC50158 µM versus > 1 mM). Consistent with the IC50estimate, formal inhibition studies revealed that inhibition of hNAT2 was competitive with an inhibition constant of 67 µM. In accordance with the competitive inhibition, ABT was shown to undergo N-acetylation in the presence of both human NAT forms, with hNAT1 exhibiting less activity under the same assay conditions (∼40% of hNAT2). In summary, the results described herein indicate that ABT is a substrate and inhibitor of NAT. Such an interaction should be considered when using ABT as a nonselective inhibitor of P450, especially when NAT-dependent metabolism is also involved.
- Published
- 2011
27. Obstructive sleep apnea syndrome: correction by mandibular advancement.
- Author
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Dierks, E, Geller, M, Roffwarg, H, and Johns, D
- Published
- 1990
28. A method for the simultaneous evaluation of the activities of seven major human drug-metabolizing cytochrome P450s using an in vitro cocktail of probe substrates and fast gradient liquid chromatography tandem mass spectrometry.
- Author
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A, Dierks E, R, Stams K, K, Lim H, G, Cornelius, H, Zhang, and E, Ball S
- Abstract
A method for the simultaneous evaluation of the activities of seven major human drug-metabolizing cytochrome P450s (CYP3A4, CYP2D6, CYP2C9, CYP1A2, CYP2C19, CYP2A6, and CYP2C8) was developed. This method uses an in vitro cocktail of specific substrates (midazolam, bufuralol, diclofenac, ethoxyresorufin, S-mephenytoin, coumarin, and paclitaxel) and fast gradient liquid chromatography tandem mass spectrometry. The assay incubation time is 20 min, which is in the linear range for all of the substrates, and the analysis time is 4 min/sample. Substrate specificity was confirmed by incubating Escherichia coli-expressed enzymes with the cocktail. Potent specific inhibitors of the seven enzymes (ketoconazole, quinidine, sulfaphenazole, tranylcypromine, quercetin, furafylline, and 8-methoxypsoralen) were evaluated in cocktail and individual substrate incubations. Five of these inhibitors were further studied to determine more precise IC(50) values for inhibition of the seven enzymes. The IC(50) values obtained in both cocktail and individual incubations were in good agreement with published values. This cocktail method offers an efficient, robust way to determine the cytochrome P450 inhibition profile of large numbers of compounds. The enhanced throughput of this method greatly facilitates its use to assess CYP inhibition as a drug candidate selection criterion.
- Published
- 2001
29. Oral maxillary squamous carcinoma: an indication for neck dissection in the clinically negative neck.
- Author
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Montes DM, Carlson ER, Fernandes R, Ghali GE, Lubek J, Ord R, Bell B, Dierks E, and Schmidt BL
- Subjects
- Adult, Aged, Aged, 80 and over, Carcinoma, Squamous Cell mortality, Carcinoma, Squamous Cell pathology, Carcinoma, Squamous Cell secondary, Cohort Studies, Disease-Free Survival, Female, Humans, Lymph Node Excision methods, Lymphatic Metastasis, Male, Maxillary Neoplasms mortality, Maxillary Neoplasms pathology, Middle Aged, Mouth Neoplasms mortality, Mouth Neoplasms pathology, Neoplasm Invasiveness pathology, Neoplasm Recurrence, Local mortality, Neoplasm Recurrence, Local surgery, Neoplasm Staging, Prognosis, Retrospective Studies, Risk Assessment, Survival Analysis, Treatment Outcome, Carcinoma, Squamous Cell surgery, Lymph Nodes pathology, Lymph Nodes surgery, Maxillary Neoplasms surgery, Mouth Neoplasms surgery, Neck Dissection statistics & numerical data, Neoplasm Recurrence, Local pathology
- Abstract
Background: This multicenter study was undertaken to characterize the metastatic behavior of oral maxillary squamous carcinoma and to determine the role of selective neck dissection., Methods: A retrospective, multicenter study of patients surgically treated for oral maxillary squamous carcinoma was completed. Data collected included primary tumor location, cervical lymph node status, and neck failure rate., Results: The study included 146 patients. The adjusted regional metastatic rate was 31.4%. Of those N0 (clinically negative) necks treated with or without neck dissection, 14.4% developed cervical metastasis. Within the cohort, 7.5% of patients died with distant disease. The regional salvage rate was 52.9%. None of the patients with locoregional failures were salvaged., Conclusions: Maxillary palatal, alveolar, and gingival squamous carcinomas exhibit aggressive regional metastatic behavior. Surgical salvage rates for neck failure are low; therefore, selective neck dissection (levels I-III) is recommended at the time of resection of T2, T3, and T4 maxillary squamous carcinomas., (Copyright © 2010 Wiley Periodicals, Inc.)
- Published
- 2011
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30. Tracheotomy in the unprotected airway.
- Author
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Bobek S, Bell RB, Dierks E, and Potter B
- Subjects
- Abscess surgery, Adolescent, Adult, Aged, Aged, 80 and over, Airway Obstruction surgery, Anesthesia, Local statistics & numerical data, Conscious Sedation statistics & numerical data, Dissection methods, Elective Surgical Procedures statistics & numerical data, Emergencies, Female, Foreign Bodies surgery, Humans, Hypopharynx surgery, Intubation, Intratracheal instrumentation, Male, Middle Aged, Pharyngeal Diseases surgery, Universal Precautions, Young Adult, Airway Management statistics & numerical data, Tracheotomy statistics & numerical data
- Abstract
Purpose: Although rare, there are many circumstances in which a secure airway is needed urgently. A newly developed technique is presented for quick and efficient performance of this procedure., Patients and Methods: All patients who had tracheotomies performed at a tertiary referral center from January 1, 2004, through December 31, 2008, were found by querying the admission database. Three hundred twenty-seven separate procedures performed in 325 patients were identified. Urgent tracheotomies were distinguished from elective and emergent tracheotomies by reading operative reports and excluding elective and emergent procedures. Elective procedures were defined as performed in patients with a secure airway (with an endotracheal tube or laryngeal mask airway). Urgent tracheotomies were defined as having an intact, unprotected airway. Emergent procedures were performed in a patient with complete airway obstruction., Results: Twenty instances of urgent, awake tracheotomies were found in 19 patients, resulting in an incidence of 20 of 327 tracheotomies (6.1%) in 19 of 325 patients (5.8%)., Conclusions: Tracheotomy is an alternative to cricothyroidotomy as a surgical airway in patients with deteriorating respiratory status who cannot be safely intubated by nonsurgical means., (Copyright © 2011 American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.)
- Published
- 2011
- Full Text
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31. Structure-function of cytochromes P450 and flavin-containing monooxygenases: implications for drug metabolism.
- Author
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R, Halpert J, L, Domanski T, O, Adali, P, Biagini C, J, Cosme, A, Dierks E, F, Johnson E, P, Jones J, P, Ortiz de Montellano, M, Philpot R, O, Sibbesen, K, Wyatt W, and Z, Zheng
- Abstract
This article is a report on a symposium held at Experimental Biology '98 in San Francisco, California. Recent developments in site-directed mutagenesis, computer-modeling, and mechanistic analysis of cytochromes P450 and flavin-containing monooxygenases are described. A unifying theme is the elaboration of general approaches for understanding and predicting the function of individual forms of these enzymes. A related goal is the production of soluble forms of mammalian cytochromes P450 for X-ray crystallography.
- Published
- 1998
32. Nitric Oxide (NO^ ), the Only Nitrogen Monoxide Redox Form Capable of Activating Soluble Guanylyl Cyclase
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Dierks, E. A. and Burstyn, J. N.
- Published
- 1996
- Full Text
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33. The catalytic site of cytochrome P4504A11 (CYP4A11) and its L131F mutant.
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Dierks, E A, Zhang, Z, Johnson, E F, and de Montellano, P R
- Abstract
CYP4A11, the principal known human fatty acid omega-hydroxylase, has been expressed as a polyhistidine-tagged protein and purified to homogeneity. Based on an alignment with P450BM-3, the CYP4A11 L131F mutant has been constructed and similarly expressed. The two proteins are spectroscopically indistinguishable, but wild-type CYP4A11 primarily catalyzes omega-hydroxylation, and the L131F mutant only omega-1 hydroxylation, of lauric acid. The L131F mutant is highly uncoupled in that it slowly (omega-1)-hydroxylates lauric acid yet consumes NADPH at approximately the same rate as the wild-type enzyme. Wild-type CYP4A11 is inactivated by 1-aminobenzotriazole under turnover conditions but the L131F mutant is not. This observation, in conjunction with the binding affinities of substituted imidazoles for the two proteins, indicates that the L131F mutation decreases access of exogenous substrates to the heme site. Leu-131 thus plays a key role in controlling the regioselectivity of substrate hydroxylation and the extent of coupled versus uncoupled enzyme turnover. A further important finding is that the substituted imidazoles bind more weakly to CYP4A11 and its L131F mutant when these proteins are reduced by NADPH-cytochrome P450 reductase than by dithionite. This finding suggests that the ferric enzyme undergoes a conformational change that depends on both reduction of the iron and the presence of cytochrome P450 reductase and NADPH.
- Published
- 1998
34. Food Habits and Nutrient Intakes of Preschool Children1
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Dierks, E. Carol and Morse, Lura M.
- Published
- 1965
- Full Text
- View/download PDF
35. Basal cell adenocarcinoma of the parotid gland: report of a case and review of the literature.
- Author
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Hirsch DL, Miles C, and Dierks E
- Subjects
- Adenocarcinoma pathology, Adult, Facial Nerve pathology, Fascia pathology, Female, Humans, Masseter Muscle pathology, Parotid Neoplasms pathology, Adenocarcinoma diagnosis, Parotid Neoplasms diagnosis
- Published
- 2007
- Full Text
- View/download PDF
36. Surgical management of oral and mucosal dysplasias: The case for surgical excision.
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Kademani D and Dierks E
- Subjects
- Carcinoma, Squamous Cell prevention & control, Cell Transformation, Neoplastic, Humans, Laser Therapy methods, Mouth Mucosa surgery, Mouth Neoplasms surgery, Oral Surgical Procedures methods, Precancerous Conditions surgery
- Published
- 2007
- Full Text
- View/download PDF
37. Radiotherapy for parotid cancer: 10 years of experience in a single center.
- Author
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Lachgar, Amine, N'Da, Guy, Nouni, Karima, el Kacemi, Hanan, Kebdani, Tayeb, and Hassouni, Khalid
- Subjects
ADENOID cystic carcinoma ,PAROTIDECTOMY ,CANCER radiotherapy ,SURGICAL margin ,PROGNOSIS ,OVERALL survival ,FACTOR analysis - Abstract
Introduction: We report our experience in the treatment of parotid cancers by radiotherapy delivered with curative intent over a period of 10 years. Aim: The aim of this study was to evaluate the therapeutic results and prognostic factors. Materials and methods: This is a retrospective study of patients with parotid cancer treated with radiotherapy between 2008 and 2017 at the National Institute of Oncology in Rabat. Patients who received adjuvant or exclusive radiotherapy were included in this study. We performed a multivariate analysis for the factors related to locoregional control and overall survival. Results: Initially, 74 patients (45 men and 29 women), at a median age of 57 years. were identified. At the time of diagnosis, 10 (13.6%), 36 (48.6%), and 28 (37.8%) patients were in stage II, III, and IVab, respectively. Sixty patients received adjuvant radiotherapy after parotidectomy and 14 patients received exclusive radiotherapy for an unresectable tumor. At 5 years, the rate of locoregional control and overall survival were 68.2% and 53.7%, respectively. Surgical resection and negative margins were significantly correlated with locoregional control. Lymph node involvement, unresectable tumors, high-grade histological types, and cystic adenoid carcinoma were significantly correlated with poor overall survival. Conclusions: Acceptable long-term results are obtained with surgery combined with radiotherapy. Surgical resection remains essential for parotid cancer, given the disappointing results of treatment with radiotherapy alone. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
38. Management of locoregional recurrence in oral squamous cell carcinoma.
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Kademani D and Dierks E
- Published
- 2006
- Full Text
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39. Prognostic factors in intraoral squamous cell carcinoma: the influence of histologic grade.
- Author
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Kademani D, Bell RB, Bagheri S, Holmgren E, Dierks E, Potter B, and Homer L
- Subjects
- Aged, Aged, 80 and over, Carcinoma, Squamous Cell mortality, Carcinoma, Squamous Cell therapy, Disease-Free Survival, Female, Humans, Male, Middle Aged, Mouth Neoplasms mortality, Mouth Neoplasms therapy, Neoplasm Recurrence, Local mortality, Neoplasm Recurrence, Local pathology, Predictive Value of Tests, Prognosis, Proportional Hazards Models, Retrospective Studies, Severity of Illness Index, Carcinoma, Squamous Cell pathology, Mouth Neoplasms pathology
- Abstract
Purpose: The purpose of this retrospective study was to review the outcome of patients with oral cavity squamous cell carcinoma treated at a single institution by primary surgical resection with or without adjuvant radiotherapy or chemoradiotherapy and to identify factors affecting survival and locoregional control., Patients and Methods: The records of 233 patients with oral cavity squamous cell carcinoma treated at a single institution from 1993 to 2003 were identified from the Legacy Emanuel Hospital and Health Center's cancer registry (Portland, OR). All patients undergoing surgical resection as a primary treatment modality were included in the study. Patients with nonresectable disease, distant metastasis, and those with inadequate follow-up data were excluded from the study. Patients with positive surgical margins, high-grade histology, aggressive biologic behavior, or advanced staged disease underwent adjuvant radiotherapy or chemoradiotherapy. The data collected included age, gender, race, tumor site, margin status, grade, TNM stage, cancer therapies, and cancer status. Data were statistically analyzed in an attempt to identify predictors of locoregional control and disease-free survival. Descriptive statistics were calculated for each variable and survival was calculated using the Kaplan-Meier method. Prognostic factors were analyzed using the Cox proportional hazard model., Results: Two hundred fifteen patients consisting of 119 men (55%) and 123 females (52%), with an average age at diagnosis of 66 years (SD +/- 14), met the criteria for inclusion in the study. Average tumor size was 23.5 mm (SD +/- 14.1). Overall 5-year survival was 56% and disease-free survival at 5 years was 58%. Stage and grade were identified as having a statistically significant effect on survival (P = .014; likelihood ratio chi-square = 10.7, 3 degrees of freedom; and P = .026; likelihood ratio chi-square = 5, 1 degree of freedom, respectively). Neither age, gender, race, tumor site, nor positive margins showed a statistically significant effect on survival (P > .05)., Conclusion: This study highlights the importance of grade and stage as independent factors in predicting survival in patients with oral squamous cell carcinoma.
- Published
- 2005
- Full Text
- View/download PDF
40. Survey of trauma patients requiring maxillofacial intervention, ages 56 to 91 years, with length of stay analysis.
- Author
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Gray E, Dierks E, Homer L, Smith F, and Potter B
- Subjects
- Aged, Aged, 80 and over, Comorbidity, Data Collection, Female, Humans, Intensive Care Units statistics & numerical data, Length of Stay statistics & numerical data, Male, Maxillofacial Injuries surgery, Middle Aged, Neck Injuries complications, Neck Injuries epidemiology, Neck Injuries surgery, Oregon epidemiology, Prognosis, Regression Analysis, Skull Fractures surgery, Spinal Fractures complications, Spinal Fractures epidemiology, Spinal Fractures surgery, Trauma Centers statistics & numerical data, Trauma Severity Indices, Maxillofacial Injuries complications, Maxillofacial Injuries epidemiology, Multiple Trauma epidemiology, Skull Fractures complications, Skull Fractures epidemiology
- Abstract
Purpose: The purpose of this study was to analyze trauma patients, ages 55 and older, sustaining multiple injuries including maxillofacial trauma. Factors influencing length of intensive care unit stay (ICUS) and length of total hospital stay were delineated and examined to determine if specific causes of increased length of stay could be elucidated, and, once known, if these causes could translate into recommendations tailored to the oral and maxillofacial surgery trauma practice., Patients and Methods: One hundred ninety-six patients, 55 years of age or older, who received either consultation alone, or consultation with surgical treatment, by oral and maxillofacial surgeons, from January 1991 to August 1998 were included in this study. Variables of interest included location of traumatic event, mechanism of injury, patient age and gender, comorbidities on presentation, Injury Severity Score (ISS), specific injuries incurred, ICUS, length of hospital stay (LOS), surgical interventions, and disposition., Results: Complications were the statistically significant factor determining length of ICU stay. ICUS, complications incurred, and ISS were the important predictors of total LOS. The significant complications affecting LOS were infectious, respiratory, and hematologic complications., Conclusion: The number of complications the patient incurs after an injury can predict length of ICUS. Length of ICUS, ISS, and number of complications incurred were the strongest predictors for total length of hospital stay. Other variables, including age, gender, living or dead, blunt versus penetrating injury, ISS, fracture site (skull, midface, or lower face), and comorbidities on presentation were not statistically significant in this patient population. Infectious, respiratory, and hematologic complications were the complications most closely correlated with increasing length of ICUS and total hospital stay., (Copyright 2002 American Association of Oral and Maxillofacial Surgeons)
- Published
- 2002
- Full Text
- View/download PDF
41. Temperature-controlled radiofrequency tissue volume reduction in the human soft palate.
- Author
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Sher AE, Flexon PB, Hillman D, Emery B, Swieca J, Smith TL, Cartwright R, Dierks E, and Nelson L
- Subjects
- Adult, Aged, Female, Hot Temperature, Humans, Male, Middle Aged, Prospective Studies, Electrosurgery methods, Palate, Soft surgery, Snoring surgery
- Abstract
Objective: To validate the use of temperature-controlled radiofrequency energy applied to the soft palate in a multicenter setting for reduction of snoring in a minimally morbid manner., Methods: Prospective, nonrandomized multicenter study of 113 patients who had a respiratory disturbance index less than 15 and minimum oxygen saturation not less than 85% and who were seeking treatment for habitual disruptive snoring. Patients were given either single or multiple lesions to the soft palate during each treatment session., Results: Patients received 1978 J on average with an overall average of 2.4 treatments. Snoring scores went from an average of 7.8 (visual analog scale (VAS), 0-10) pretreatment to 3.2 posttreatment. Pain was minimal, averaging 1.7 (VAS 0-10) on days 1 to 6. Complications were few and transient, and mild., Conclusions: The multiple lesion protocol was the most successful; reducing snoring from 7.6 to 2.7, on a VAS with an average of 1232 J delivered over 1.6 treatments. Temperature-controlled radiofrequency was found to be a minimally invasive, well-tolerated procedure that was safe and efficacious in this study group.
- Published
- 2001
- Full Text
- View/download PDF
42. Transoral approach to fractures of the mandible.
- Author
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Dierks, Eric J. and Dierks, E J
- Abstract
The transoral approach to open reduction of mandibular fractures has gained popularity but remains controversial. This report reviews 37 consecutive transoral open reductions of various mandibular fractures performed in 32 patients over a 2-year period. The fracture site most often addressed transorally was the symphysis and parasymphysis area. A 19% complication rate and an 11% infection rate were observed. [ABSTRACT FROM AUTHOR]
- Published
- 1987
- Full Text
- View/download PDF
43. LeFort I orbitotomy: a new approach to the inferonasal orbital apex.
- Author
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Dailey RA, Dierks E, Wilkins J, and Wobig JL
- Subjects
- Antineoplastic Agents, Hormonal therapeutic use, Female, Follow-Up Studies, Hemangioma, Cavernous diagnostic imaging, Hemangioma, Cavernous drug therapy, Humans, Maxilla diagnostic imaging, Maxilla surgery, Middle Aged, Orbital Neoplasms diagnostic imaging, Orbital Neoplasms drug therapy, Osteotomy, Prednisone therapeutic use, Tomography, X-Ray Computed, Visual Acuity, Visual Fields, Zygoma diagnostic imaging, Zygoma surgery, Hemangioma, Cavernous surgery, Nose surgery, Ophthalmologic Surgical Procedures methods, Orbit surgery, Orbital Neoplasms surgery
- Abstract
Numerous approaches to the orbit have been elegantly described in the literature. One area of the orbit that remains difficult to approach with standard techniques is the inferonasal apex. We describe a new surgical procedure we have termed the LeFort I orbitotomy. The technique involves creation of a LeFort I osteotomy to separate the maxilla from the zygoma and nose bilaterally. The posterior inferomedial orbital bone is then removed and the periorbita opened. This approach allows a more direct, less tangential view to this area of the orbit than does a Caldwell-Luc approach. Wider access for tumor manipulation is gained than would be possible with a transnasal endoscopic approach. An illustrative case report is presented.
- Published
- 1998
44. Food habits and nutrient intakes of preschool children
- Author
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DIERKS, E. CAROL, primary, MORSE, LURA M., additional, and Duffy, I., additional
- Published
- 1966
- Full Text
- View/download PDF
45. Survival and infection rates of microvascular free flaps in pediatric mandibular reconstruction: A systematic review and meta-analysis.
- Author
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Huang RS, Benour A, and Wong Riff KWY
- Subjects
- Humans, Child, Graft Survival, Surgical Wound Infection epidemiology, Surgical Wound Infection etiology, Free Tissue Flaps transplantation, Mandibular Reconstruction methods
- Abstract
Background: Vascularized free tissue transfer has been established as an effective method in the reconstruction of mandibular defects. However, a limited understanding of its efficacy in pediatric patients persists due to its infrequent presentation. The aim of this study is to systematically consolidate the survival and infection rates of free flaps in pediatric mandibular reconstruction., Methods: A systematic literature search was conducted on Ovid Medline, Embase, and Cochrane Library for studies published up to January 2024. We included peer-reviewed studies reporting on survival and infection outcomes associated with free flap mandibular reconstruction in pediatric patients (<18 years). We performed a random-effects meta-analysis with the inverse-variance weighted approach to estimate survival and infection rates. Heterogeneity was assessed by I
2 , and publication bias was examined using Egger's test., Results: A total of 26 studies, reporting on 463 free flaps and 439 pediatric patients with a mean age of 10.7 years, were included in our study. Most free flaps originated from the fibula (n = 392/463, 84.7%) and benign tumors were the most common cause for mandibular reconstruction (n = 179/463, 38.7%). The pooled estimate for survival of flaps was 96% (95% CI: 93-97, I2 = 0%), and recipient-site infections were estimated to occur in 9% (95% CI: 6-13, I2 = 0%) of cases. The most common reported complications within the study timeframe were early malocclusion (n = 28/123, 21.4%) and bite abnormalities (18/131, 13.7%)., Conclusion: Free tissue transfer for mandibular reconstruction in pediatric patients is effective and safe. Further research is required to explore functionality following mandibular reconstruction in diverse pediatric populations., (© 2024 The Author(s). Microsurgery published by Wiley Periodicals LLC.)- Published
- 2024
- Full Text
- View/download PDF
46. Targeting G protein-coupled receptors for heart failure treatment.
- Author
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Thai BS, Chia LY, Nguyen ATN, Qin C, Ritchie RH, Hutchinson DS, Kompa A, White PJ, and May LT
- Subjects
- Humans, Animals, Molecular Targeted Therapy, Heart Failure drug therapy, Heart Failure metabolism, Receptors, G-Protein-Coupled metabolism, Receptors, G-Protein-Coupled antagonists & inhibitors
- Abstract
Heart failure remains a leading cause of morbidity and mortality worldwide. Current treatment for patients with heart failure include drugs targeting G protein-coupled receptors such as β-adrenoceptor antagonists (β-blockers) and angiotensin II type 1 receptor antagonists (or angiotensin II receptor blockers). However, many patients progress to advanced heart failure with persistent symptoms, despite treatment with available therapeutics that have been shown to reduce mortality and mortality. GPCR targets currently being explored for the development of novel heart failure therapeutics include adenosine receptor, formyl peptide receptor, relaxin/insulin-like family peptide receptor, vasopressin receptor, endothelin receptor and the glucagon-like peptide 1 receptor. Many GPCR drug candidates are limited by insufficient efficacy and/or dose-limiting unwanted effects. Understanding the current challenges hindering successful clinical translation and the potential to overcome existing limitations will facilitate the future development of novel heart failure therapeutics. LINKED ARTICLES: This article is part of a themed issue Therapeutic Targeting of G Protein-Coupled Receptors: hot topics from the Australasian Society of Clinical and Experimental Pharmacologists and Toxicologists 2021 Virtual Annual Scientific Meeting. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v181.14/issuetoc., (© 2023 The Authors. British Journal of Pharmacology published by John Wiley & Sons Ltd on behalf of British Pharmacological Society.)
- Published
- 2024
- Full Text
- View/download PDF
47. Advantages and disadvantages of renewable energy: a review of the scientific literature.
- Author
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Júnior Freires, Francisco, do Nascimento Damasceno, Vanessa, Soares Machado, Ana Lúcia, Breves Martins, Gilbert, Monteiro da Silva, Luana, da Silveira Pio, Mauro Célio, Claro Júnior, Luiz Henrique, Câmara Sales, Diego, Gonçalves Reis, Ailton, and Nascimento-e-Silva, Daniel
- Abstract
Copyright of GeSec: Revista de Gestao e Secretariado is the property of Sindicato das Secretarias e Secretarios do Estado de Sao Paulo (SINSESP) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
48. Multi-modal molecule structure–text model for text-based retrieval and editing.
- Author
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Liu, Shengchao, Nie, Weili, Wang, Chengpeng, Lu, Jiarui, Qiao, Zhuoran, Liu, Ling, Tang, Jian, Xiao, Chaowei, and Anandkumar, Animashree
- Published
- 2023
- Full Text
- View/download PDF
49. Endoscopic Endonasal Repair and Reconstruction of Traumatic Anterior Skull Base Defects.
- Author
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Williams, Isabelle J. M., Navaratnam, Annakan V., Wilson, Mark, and Ferguson, Mark S.
- Subjects
SKULL base ,CEREBROSPINAL fluid leak ,FIBULA ,FACIAL injuries ,SKULL injuries ,RHINORRHEA ,SKULL fractures - Abstract
Eighty percent of cerebrospinal fluid leaks (CSF) occur following trauma and complicate 12 to 13% percent of all basilar skull fractures (Prosser, Vender, and Solares, 2011). An endoscopic endonasal approach (EEA) is often the preferred method of repair with greater than 90% success rates (Prosser, Vender, and Solares, 2011). We report a case of a 37-year-old man who presented to our regional level 1 trauma centre with multiple facial injuries. Initial cross-sectional imaging revealed multiple, continuous anterior skull base fractures with associated pneumocephalus. Though initially managed conservatively, the patient represented five days later with unilateral left-sided rhinorrhoea. An endoscopic endonasal repair with a multilayer fat, tensor fascia lata, free mucosal graft, and vascularised local flap reconstruction was undertaken. This case highlights the importance of maintaining a high level of suspicion for delayed CSF leak in traumatic base of skull injury. The EEA enables meticulous dissection and thorough inspection of the skull base, facilitating multilayered repair and reconstruction of defects. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
50. Overexpression of deubiquitinase (usp 36) in oral squamous cell carcinoma.
- Author
-
Murali, Preethi, Kavitha, B, and Narasimhan, Malathi
- Subjects
SQUAMOUS cell carcinoma ,DEUBIQUITINATING enzymes ,GENETIC overexpression ,POST-translational modification ,GENE expression - Abstract
Aim: Oral cancer is one of the top three types of cancer and is of significant public health importance in India. A common post-translational modification in cells is ubiquitination/deubiquitination, and its dysregulation is closely associated with the development of cancer. Studies on the role of ubiquitination in oral squamous cell carcinoma (OSCC) are lacking. Increased expression of usp36 has been observed in various types of cancer, and this study aimed to check the gene expression of usp36 in OSCC patients. In this study, we analyzed the expression of ubiquitin-specific proteases (USPs) 36 in OSCC. Materials and Methods: A total of 15 OSCC patients at different stages of tumor differentiation and age- and sex-matched controls were recruited for the study. The patients were categorized based on their differentiation patterns. RNA was extracted from the tissues, and usp36 gene expression was checked in these samples using a quantitative real-time PCR technique. Results: Our study showed increased expression of usp36 gene in OSCC patients. The usp36 mRNA was 231.8 ± 137.94 folds higher in well-differentiated squamous cell carcinoma patients, 38.18 ± 3.77 folds higher in moderately differentiated squamous cell carcinoma patients, and 25.49 ± 7.30 folds higher in poorly differentiated squamous cell carcinoma patients compared to control tissues. Conclusion: Our study reports, for the first time, an increased gene expression of usp36 in OSCC tissues. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
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