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Effect of Deep Margin Elevation on Interfacial Gap Development of CAD/CAM Inlays after Thermomechanical Cycling. Oper Dent 2021; 46:529-536. [PMID: 34757375 DOI: 10.2341/20-310-l] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/20/2021] [Indexed: 11/23/2022]
Abstract
The aim of this study was to evaluate interfacial gap formation of CAD/CAM lithium disilicate inlay margins before and after thermomechanical loading. METHODS AND MATERIALS Mesio-occlusal-distal cavities were prepared on 12 extracted mandibular molars. The gingival margin of one proximal box was elevated with resin modified glass ionomer (RMGI) by a height of 2 mm (Group E [elevation]), and the margin of the other side served as a control (Group NE [no elevation]). Lithium disilicate computer-aided design and computer-aided manufacturing (CAD/CAM) inlays were fabricated and bonded with a self-adhesive resin cement. An aging process was simulated on the specimens under thermomechanical cycling by using a chewing simulator. Marginal integration was evaluated under scanning electron miscroscopy (SEM) using epoxy resin replicas before and after cycling. Marginal areas were stained with silver nitrate solution, and the volumetric gap was measured at the bonded interfaces using microcomputed tomography (CT) before and after cycling. Statistical analyses were performed using paired t-tests, the Wilcoxon signed rank test, and the Mann-Whitney test (a<0.05). RESULTS SEM showed marginal discontinuities in Group NE that increased after thermomechanical cycling. Micro-computed tomography exhibited three-dimensional dye-penetrating patterns at the interfaces before and after cycling. Interfacial disintegration was larger in Group NE before cycling (p<0.05). Thermomechanical cycling increased the gaps in both Groups NE and E (p<0.05). The gap increment from thermomechanical cycling was larger in Group NE (p<0.05). CONCLUSIONS Thermomechanical cycling induced interfacial disintegration at the lithium disilicate CAD/CAM inlays, with deep proximal margins. Margin elevation with RMGI placement reduced the extent of the interfacial gap formation before and after the aging simulation.
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Abstract
OBJECTIVES To evaluate the accuracy of three-dimensional stereophotogrammetry by comparing values obtained from direct anthropometry and the 3dMDface system. To achieve a more comprehensive evaluation of the reliability of 3dMD, both linear and surface measurements were examined. SETTING AND SAMPLE POPULATION UCLA Section of Orthodontics. Mannequin head as model for anthropometric measurements. MATERIAL AND METHODS Image acquisition and analysis were carried out on a mannequin head using 16 anthropometric landmarks and 21 measured parameters for linear and surface distances. 3D images using 3dMDface system were made at 0, 1 and 24 hours; 1, 2, 3 and 4 weeks. Error magnitude statistics used include mean absolute difference, standard deviation of error, relative error magnitude and root mean square error. Intra-observer agreement for all measurements was attained. RESULTS Overall mean errors were lower than 1.00 mm for both linear and surface parameter measurements, except in 5 of the 21 measurements. The three longest parameter distances showed increased variation compared to shorter distances. No systematic errors were observed for all performed paired t tests (P<.05). Agreement values between two observers ranged from 0.91 to 0.99. CONCLUSIONS Measurements on a mannequin confirmed the accuracy of all landmarks and parameters analysed in this study using the 3dMDface system. Results indicated that 3dMDface system is an accurate tool for linear and surface measurements, with potentially broad-reaching applications in orthodontics, surgical treatment planning and treatment evaluation.
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Review article: recent advances in pharmacogenetics and pharmacokinetics for safe and effective thiopurine therapy in inflammatory bowel disease. Aliment Pharmacol Ther 2016; 43:863-883. [PMID: 26876431 DOI: 10.1111/apt.13559] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 08/26/2015] [Accepted: 01/26/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Azathioprine and mercaptopurine have a pivotal role in the treatment of inflammatory bowel disease (IBD). However, because of their complex metabolism and potential toxicities, optimal use of biomarkers to predict adverse effects and therapeutic response is paramount. AIM To provide a comprehensive review focused on pharmacogenetics and pharmacokinetics for safe and effective thiopurine therapy in IBD. METHODS A literature search up to July 2015 was performed in PubMed using a combination of relevant MeSH terms. RESULTS Pre-treatment thiopurine S-methyltransferase typing plus measurement of 6-tioguanine nucleotides and 6-methylmercaptopurine ribonucleotides levels during treatment have emerged with key roles in facilitating safe and effective thiopurine therapy. Optimal use of these tools has been shown to reduce the risk of adverse effects by 3-7%, and to improve efficacy by 15-30%. For the introduction of aldehyde oxidase (AOX) into clinical practice, the association between AOX activity and AZA dose requirements should be positively confirmed. Inosine triphosphatase assessment associated with adverse effects also shows promise. Nucleoside diphosphate-linked moiety X-type motif 15 variants have been shown to predict myelotoxicity on thiopurines in East Asian patients. However, the impact of assessments of xanthine oxidase, glutathione S-transferase, hypoxanthine guanine phosphoribosyltransferase and inosine monophosphate dehydrogenase appears too low to favour incorporation into clinical practice. CONCLUSIONS Measurement of thiopurine-related enzymes and metabolites reduces the risk of adverse effects and improves efficacy, and should be considered part of standard management. However, this approach will not predict or avoid all adverse effects, and careful clinical and laboratory monitoring of patients receiving thiopurines remains essential.
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Efficacy and safety of certolizumab pegol for Crohn's disease in clinical practice. Aliment Pharmacol Ther 2015; 42:428-40. [PMID: 26081839 DOI: 10.1111/apt.13288] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 04/13/2015] [Accepted: 06/01/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND Certolizumab pegol (CZP) is Food and Drug Administration (FDA)-approved to treat Crohn's disease (CD). However, the efficacy and safety of CZP outside clinical trials are not well established. AIM To report the efficacy, safety and predictors of response to CZP in CD patients treated during a 6-year period since FDA-approval at a tertiary care centre. METHODS All CD patients who received CZP at our institution between 2008 and 2013 were evaluated through retrospective medical record-based review of steroid-free complete response (SCR), loss of response and safety. RESULTS A total of 358 patients were included. One hundred twelve patients (31.3%) and 189 (52.8%) received CZP as their second and third biological agent, respectively. The probability of SCR at 26 week was 19.9% (95% CI, 15.9-24.5). The probability of survival free of loss of response at 2 year was 45.7% (95% CI, 32.5-59.5). A predictor of SCR was age at CD diagnosis of >40 years old (hazard ratio, HR relative to those <17, 4.69; 95% CI, 1.75-12.61). Negative predictors included present perianal fistula (HR, 0.39; 95% CI, 0.16-0.98) and prior primary nonresponse to adalimumab (ADA; HR relative to secondary loss of response, 0.18; 95% CI, 0.04-0.76). Twenty-three patients (6.4%) experienced serious adverse events and 19 patients (5.3%) discontinued CZP due to adverse events. CONCLUSIONS Certolizumab pegol was both effective and well tolerated for the treatment of Crohn's disease in this large tertiary care centre enriched with biologics-exposed patients. It may be more effective in patients without early-aged Crohn's disease diagnosis, prior primary nonresponse to adalimumab and present perianal fistula.
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The effect of water bolus temperature on esophageal motor function as measured by high-resolution manometry. Neurogastroenterol Motil 2014; 26:1628-34. [PMID: 25307526 DOI: 10.1111/nmo.12441] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 08/19/2014] [Indexed: 02/08/2023]
Abstract
BACKGROUND Ingestion of cold fluids may induce pain in patients with esophageal motility disorders. Hot fluids, on the other hand, may help to relieve pain. We studied changes in esophageal motility as a variable of water bolus temperature using high-resolution manometry (HRM) in healthy human. METHODS Thirty-two healthy subjects were recruited at Kosin University Hospital. HRM was performed in a sitting position, with room temperature (RT, 25 °C), hot (45 °C), and cold (2 °C) water swallowed in that order. This exam included single swallowing (10 swallows of 5 mL water, 30 s intervals) and multiple water swallows (MWS; 100 mL water within 30 s). KEY RESULTS In the single swallowing, hot water caused a decrease in lower esophageal sphincter (LES) residual pressure (5.87 ± 4.20 mmHg vs 7.45 ± 4.17 mmHg (RT), p = 0.001) and duration of esophageal body (EB) contraction (3.01 ± 0.80 s vs 3.15 ± 1.16 s (RT), p = 0.009). Cold water caused an increase in the duration of EB contraction (3.52 ± 0.87 s vs 3.15 ± 1.16 s (RT), p = 0.001) and a decrease in contractile front velocity (CFV) (4.43 ± 1.50 cm/s vs 4.90 ± 2.53 cm/s (RT), p = 0.007). Similarly, in the MWS, hot water caused a decrease in the duration of EB contraction (12.95 ± 5.02 s vs 16.33 ± 5.94 s (RT), p = 0.024) and an increase in the amplitude of EB contraction (114.27 ± 83.36 mmHg vs 82.70 ± 46.77 mmHg (RT), p = 0.007). Cold water caused an increase in the duration of EB contraction (27.38 ± 2.89 s vs 16.33 ± 5.94 s (RT), p = 0.03) and a decrease in the amplitude of EB contraction (51.68 ± 33.94 mmHg vs 82.70 ± 46.77 mmHg (RT), p = 0.001). CONCLUSIONS & INFERENCES This study showed changes in esophageal motility to be dependent on water temperature. Especially, MWS showed clear changes in esophageal motility at different temperatures of water.
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Relationship between multiple water swallows and gastroesophageal reflux in patients with normal esophageal motility. Dis Esophagus 2014; 28:520-3. [PMID: 24898795 DOI: 10.1111/dote.12232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Multiple water swallows (MWS) stimulates neural inhibition, resulting in abolition of contractions in the esophageal body and complete lower esophageal sphincter relaxation, which is followed by peristalsis and the lower esophageal sphincter contraction. We assessed the relationship between MWS and gastroesophageal reflux in patients with esophageal symptoms and with normal findings by high-resolution manometry (HRM). We retrospectively reviewed the clinical records of patients who underwent HRM and a 24-hour ambulatory impedance-pH study. Correlation between the findings of the impedance-pH study and abnormal MWS responses without motility disorders was evaluated. Independent t-tests were used for statistical analysis. Of 28 patients, 20 (71%) had abnormal MWS responses: four (20%) had abnormal responses during MWS, six (30%) had abnormal responses after MWS, and 10 (50%) had abnormal responses both during and after MWS. Total acid exposure times were significantly longer in patients with abnormal MWS responses than in patients with normal MWS responses. In particular, upright acid exposure time and all reflux percent times were significantly longer in patients with abnormal MWS responses. However, bolus clearance time and longest reflux episode were not different between the two groups. Abnormal MWS responses predicted increased acid exposure times in patients with normal findings of HRM by the Chicago classification.
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Successful endoscopic ultrasound-assisted resection of a giant ulcerated rectal lipoma causing hematochezia. Endoscopy 2013; 44 Suppl 2 UCTN:E306-7. [PMID: 22933267 DOI: 10.1055/s-0030-1256948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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Hyaluronic acid injection for sustained control of bleeding from a sclerotic ulcer base. Endoscopy 2012; 44 Suppl 2 UCTN:E169-70. [PMID: 22622726 DOI: 10.1055/s-0031-1291756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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P02.116. The relationship between deqi and the effect of acupuncture. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012. [PMCID: PMC3373488 DOI: 10.1186/1472-6882-12-s1-p172] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/26/2023]
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Abstract
We examine the long-term correlations and multi-fractal properties of daily satellite retrievals of Arctic sea ice albedo and extent, for periods of approximately 23 years and 32 years, respectively. The approach harnesses a recent development called multi-fractal temporally weighted detrended fluctuation analysis, which exploits the intuition that points closer in time are more likely to be related than distant points. In both datasets, we extract multiple crossover times, as characterized by generalized Hurst exponents, ranging from synoptic to decadal. The method goes beyond treatments that assume a single decay scale process, such as a first-order autoregression, which cannot be justifiably fitted to these observations. Importantly, the strength of the seasonal cycle ‘masks’ long-term correlations on time scales beyond seasonal. When removing the seasonal cycle from the original record, the ice extent data exhibit white noise behaviour from seasonal to bi-seasonal time scales, whereas the clear fingerprints of the short (weather) and long (approx. 7 and 9 year) time scales remain, the latter associated with the recent decay in the ice cover. Therefore, long-term persistence is re-entrant beyond the seasonal scale and it is not possible to distinguish whether a given ice extent minimum/maximum will be followed by a minimum/maximum that is larger or smaller in magnitude.
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Treatment of Intractable Pain with Morphine and Tetrahydroaminacrine. BRITISH MEDICAL JOURNAL 2011; 1:471-3. [PMID: 20789070 DOI: 10.1136/bmj.1.5224.471] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Novel anti-wrinkle effect of cosmeceutical product with new retinyl retinoate microsphere using biodegradable polymer. Skin Res Technol 2011; 18:70-6. [DOI: 10.1111/j.1600-0846.2011.00533.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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WE-B-201B-07: Volumetric Density Analysis Using Automated Whole Breast Ultrasound. Med Phys 2010. [DOI: 10.1118/1.3469355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Single Nucleotide Polymorphism (SNP) in RASSF1 and Clinical Outcomes of Breast Cancer Patients Treated with Neoadjuvant Docetaxel/Doxorubicin Chemotherapy. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-09-6061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
PurposeThe tumor suppressor gene RASSF1 (Ras association domain family member 1) regulates cell cycle, progression, apoptosis, and microtubule stability, and is inactivated by promoter hypermethylation in breast cancer. We analyzed the SNPs in RASSF1 and their predictive and prognostic value in stage II or III breast cancer patients who received neoadjuvant docetaxel/doxorubicin chemotherapyMethodsA total of 139 stage II or III breast cancer patients who received neoadjuvant docetaxel/doxorubicin chemotherapy were enrolled in this study. The patients received three cycles of neoadjuvant chemotherapy followed by curative surgery, and received additional three cycles of docetaxel/doxorubicin chemotherapy as an adjuvant. Germline DNA from peripheral blood mononuclear cells was extracted. The genotypes were performed using Illumina GoldenGate® Assay. We analyzed 3 SNPs in RASSF1 genes: rs3213621 T>C in 3'UTR, rs2073499 G>A in intron, and rs2073498 C>A in exon 3 Ala133Ser.ResultsThe overall radiologic response rate (RR) for neoadjuvant chemotherapy was 79.8% and 10 patients (7.2%) achieved a pathologic complete remission (pCR). None of the SNPs were correlated with radiologic RR or pCR rate. SNP in intron of RASSF1 (rs2073499) was associated with relapse free survival (RFS). RFS was longer in GA/AA genotype than GG genotype (Hazard ratio [HR]=0.374, p=0.034) After adjusting age and hormone status, prognostic value of RASSF1 SNP remained significant (HR=0.393, p=0.050). Other two SNPs were not significantly associated with RFS.ConclusionsThe GA/AA genotype in SNP of RASSF1 (rs2073499) is associated with significantly longer RFS than the GG genotype. Further research is warranted to identify the biologic characteristics of RASSF1.
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 6061.
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Non-surgical management of microperforation induced by EMR of the stomach. Dig Liver Dis 2006; 38:605-8. [PMID: 16824812 DOI: 10.1016/j.dld.2006.04.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2005] [Revised: 04/03/2006] [Accepted: 04/27/2006] [Indexed: 02/07/2023]
Abstract
BACKGROUND Perforation and bleeding are major complications associated with gastric endoscopic mucosal resection. Evident perforation during endoscopic mucosal resection can be managed by endoscopic clipping. However, management of microperforation is not well established. PATIENT AND METHOD From January 2002 to June 2004, 109 early gastric cancers and 300 adenomas were treated with endoscopic mucosal resection. Iatrogenic perforations occurred in 4.16% (n=17) patients. Following exclusion of four evident perforations, microperforation was observed in 3.18% (n=13) patients. The clinical features of microperforation in patients were retrospectively reviewed. RESULTS In a total of 13 microperforation cases, 2 patients were managed surgically. The remaining patients successfully recovered without surgical management. In the case of 11 patients without surgery, 7 experienced abdominal pain, which required analgesics, 2 patients experienced mild discomfort and 2 patients experienced no symptoms. A body temperature above 37.5 degrees C was observed in 9.1% (n=1) patients and leucocytosis above 9000 microL-1 was in 72.7% (n=8) patients. The mean duration of nasogastric tube drainage was 2.36+/-1.03 days, of fasting 4.18+/-1.17 days, of intravenous antibiotics 5.55+/-1.44 days and of hospitalisation 7.45+/-1.04 days. CONCLUSION Microperforation induced by gastric endoscopic mucosal resection can be managed successfully using a non-surgical approach including fasting, nasogastric tube drainage and intravenous antibiotics.
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Expression of serum response factor in normal rat gastric mucosa. JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY : AN OFFICIAL JOURNAL OF THE POLISH PHYSIOLOGICAL SOCIETY 2002; 53:289-94. [PMID: 12120903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Serum response factor (SRF) is a transcription factor that is involved in cell proliferation, muscle and neuron development and maintenance. Its expression in gastric mucosa remains unknown. In this study we demonstrated that SRF is expressed in normal rat gastric tissue as two isoforms and localized mainly to smooth muscle cells of muscularis mucosae and its extensions into the lamina propria, to muscularis propria, and musculature of the vascular system. To a lesser extent, SRF is also expressed in the gastric epithelium of the mucosal neck area (proliferative zone) and in the endothelial cells of microvessels. These data suggest that the main role of SRF in normal gastric tissue is to maintain muscular support and contraction and possibly epithelial regeneration.
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Abstract
Numerous biologic and synthetic materials have been used with limited success as an interposed graft to repair segmental common bile duct (CBD) defects. The authors report here that an autologous vein graft can be successfully used to correct a CBD deficit contingent on accurate microsurgical technique immediate stenting and rapid graft vascularization. Thirty Sprague-Dawley rats underwent laparotomy and the experimental group (n=25) had a 3-mm segment of the CBD excised. The CBD defect was repaired using an interposed femoral vein graft aided by a plastic stent. The control group (n=5) had the CBD cut and repaired by means of primary anastomosis. The experimental group was subdivided into three sub-groups each examined at three different postoperative intervals: 1, 4 and 12 weeks. The results showed that inflammation was apparent in the venous wall following the first postoperative week. A progressive loss of the vascular endothelium and replacement with the columnar epithelium typical of the CBD was seen in the vein graft. Nineteen of the 25 experimental rats (76 percent) of the animals survived without complication from the surgery and there were no abnormalities in the liver biochemical tests of these animals. Any biliary tract obstruction that developed was attributed to dislocation of the stent leading to collapse of the vein graft (experimental group), or constriction of the anastomosis (control group). This study demonstrates that biliary tract reconstruction using an autologous vein graft can be successfully performed in a rat model of CBD repair. The application of this method to the clinical setting is also discussed.
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Patterns of flap loss related to arterial and venous insufficiency in the rat pedicled TRAM flap. Ann Plast Surg 1999; 43:167-71. [PMID: 10454324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Vascular supply to the contralateral portion of the conventional transverse rectus abdominis musculocutaneous (TRAM) flap (zone IV) may become compromised, resulting in partial flap loss and requiring segmental excision. The etiology of this necrosis is not clear. This study determines skin necrosis patterns on a superiorly pedicled caudal TRAM flap during conditions of venous and arterial insufficiency, and determines whether cutaneous venous outflow can sustain a flap with venous insufficiency. Twenty-eight adult male Sprague-Dawley rats underwent superior pedicled TRAM flap elevation, and the zones were marked on the skin paddle. The animals were divided into four groups: control (group A, N = 6), arterial ligation (group B, N = 6), venous ligation (group C, N = 8), and venous ligation with cutaneous venous outflow (group D, N = 8). After 10 days, the skin paddle was photographed and the areas of necrotic skin were measured. Results showed that group B (selective arterial ligation) had 51.7 +/- 2.8% and 40.0 +/- 2.0% skin necrosis in zones I and II respectively. Zone I necrosis was significantly greater in group B compared with the control (p < 0.05). Group C (selective venous ligation) resulted in 73.8 +/- 16.4% and 93.8 +/- 33.4% skin necrosis in zones III and IV respectively. This necrosis was significantly greater compared with the control (p < 0.001). Group D rats' lateral skin necrosis compared significantly less with group C (p < 0.001). These results demonstrate that the patterns of flap necrosis in rat TRAM flaps with poor arterial inflow differ from those with venous stasis. Necrosis of the contralateral portion (zone IV) of human TRAM flaps may be related to problems with venous stasis; thus, a cutaneous venous outflow may prevent this problem.
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Abstract
A tremendous amount of research has been dedicated to laying the groundwork that will eventually lead to successful limb transplantation in humans. Limb transplantation in animal models has also been widely used for evaluating composite tissue allografts and various immunosuppressive regimens. Currently, there is no mouse model of limb transplantation. Such a model is attractive because it would allow investigators to apply the well-defined genetic characteristics of the mouse to the challenging field of limb transplantation. In this study, 12 mice underwent orthotopic hind limb transplantations using end-to-end anastomoses of the femoral vessels. The success rate of this surgical procedure was 83%, with 10 of the 12 limbs surviving. Experimental devices, operative procedures, and the major elements of success are discussed.
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Serratus anterior-rib composite flap: anatomic studies and clinical application to hand reconstruction. Ann Plast Surg 1999; 42:132-6. [PMID: 10029475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Because of its relative ease of dissection, increased length of the vascular pedicle, and excellent diameter for anastomosis, the serratus anterior-rib composite flap has been used to reconstruct bony and soft-tissue defects in the face and lower extremities. However, no data are available on optimal rib level or harvest location. The authors report the results of the vascular anatomy of this flap in 6 fresh cadavers and 2 clinical patients using this flap to reconstruct a defect in the hand. Arteriograms were performed through the thoracodorsal artery, and microscopic dissections were done at the rib periosteum. The sixth through the ninth ribs showed consistent filling of their respective intercostal vessels. The rib segments near the anterior axillary line had the most abundant communicating vessels between the serratus and the periosteum. In two patients, the serratus-rib composite free flap provided excellent bone and muscle length for reconstructing the first metacarpal defect.
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Coexistent cystic teratoma of the omentum and ovary: report of two cases. ABDOMINAL IMAGING 1997; 22:516-8. [PMID: 9233891 DOI: 10.1007/s002619900252] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Benign cystic teratoma (dermoid cyst) of the omentum is a rare tumor, while ovarian cystic teratoma is one of the most common ovarian neoplasms. Seven cases of cystic teratoma of the omentum have been reported in association with an ovarian teratoma. We report two cases associated with an ovarian teratoma, which shows unusual dense rim calcification of the cystic wall.
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Renal clearance of methotrexate in man during high-dose oral and intravenous infusion therapy. Cancer Chemother Pharmacol 1981; 6:59-64. [PMID: 7273267 DOI: 10.1007/bf00253011] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The renal excretion and clearance of methotrexate (MTX) following high-dose (800 mg) therapy followed by folinic acid rescue was studied in 12 patients (2 female, 10 male): the mean age was 49.3 +/- 5.5 (SE), weight 68.6 +/- 3.9 (SE) and body surface area 1.8 +/- 0.1 m2. Plasma and urine were collected over 154 h at intervals of 2-24 h, and the collection times, volume, and pH of urine samples recorded. Total MTX concentrations in urine and plasma were measured by the highly specific competitive protein-binding assay method. Plasma and urinary creatinine levels were measured on an SMA-12 autoanalyser. The renal clearance of MTX was calculated for each urine collection period. Following oral administration, clearance values during the first 6 h were high at 257 +/- 8.3 (ml/Min), followed by a trough in clearance of 27.9 +/- 4.2 (ml/min) in the 20- to 30-h period. This was followed by a secondary rise of MTX renal clearance to 180.4 +/- 14.6 ml/min during the 68- to 84-h period and again to 84.9 +/- 17.1 ml/min between 84 and 112 h. In the last two periods it rose to 209 +/- 57.9 ml/min. Similar fluctuations were seen following IV administration. The changes in clearance were statistically significant at the p less than 0.005 level. It is suggested that high concentrations of MTX in the renal tubules result in inhibition of carrier protein synthesis, leading to a fall in active tubular secretion. When MTX concentrations fall the tubular cell recovers and a secondary rise in renal clearance occurs, leading to cyclical changes in MTX elimination.
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Nitrogen balances of adult human subjects fed combinations of wheat, beans, corn, milk, and rice. Am J Clin Nutr 1973; 26:702-6. [PMID: 4740326 DOI: 10.1093/ajcn/26.6.702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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AN ADDITIONAL MANAGEMENT FOR TERMINAL CARCINOMA IN THE HEAD AND NECK. Med J Aust 1962. [DOI: 10.5694/j.1326-5377.1962.tb24479.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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