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Simplified Free Gingival Graft Around Implants Using Medical Grade Tissue Cyanoacrylate: A Case Series Report. J ORAL IMPLANTOL 2022; 48:485-490. [PMID: 35446930 DOI: 10.1563/aaid-joi-d-21-00025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 12/21/2021] [Accepted: 01/29/2022] [Indexed: 11/22/2022]
Abstract
The free gingival graft (FGG) procedure using suturing techniques has been widely utilized to effectively increase the amount of attached keratinized gingiva. However, conventional suturing procedures are time-consuming and technique-sensitive. Simplified FGG procedure around teeth and dental implants using medical grade tissue adhesive (cyanoacrylate) is known to overcome drawbacks of traditional suture techniques. However, the clinical application of cyanoacrylate as a means of stabilizing the graft has not been a common practice. The aim of this report demonstrates simplified FGG procedures around dental implants using cyanoacrylate with follow-up results.
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Accelerated national lot release on COVID-19 vaccines in Korea. Biologicals 2022; 77:24-27. [PMID: 35680495 PMCID: PMC9160014 DOI: 10.1016/j.biologicals.2022.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 03/01/2022] [Accepted: 05/29/2022] [Indexed: 11/30/2022] Open
Abstract
Independent quality testing of samples from vaccine lots is part of quality assurance, especially to ensure the consistency of production lot by lot. Effective national lot release system that ensures the quality of each lot of vaccine before it is on the market is important because vaccines are intended to healthy people. In order to respond more quickly to public health crises such as the COVID-19 pandemic, the MFDS implements accelerated national lot release for rapid vaccination in Republic of Korea. For the accelerated system, improvement has been made in terms of timing of application for lot release and required documents. In addition, the processing period has been shortened and sampling method and test items have been streamlined. A thorough preparation for accelerated lot release has been developed by establishing test methods for a new platform in advance. As a result, a total of 43.88 million doses have been released within eight days on average. The accelerated lot release system has contributed significantly to rapid COVID-19 vaccination in Korea.
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ALK-positive anaplastic large cell lymphoma with a monomorphic small-cell pattern masquerading as inflammatory gastric lesions. THE MALAYSIAN JOURNAL OF PATHOLOGY 2019; 41:213-222. [PMID: 31427559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Anaplastic lymphoma kinase-positive (ALK+) anaplastic large cell lymphoma (ALCL) with a non-common pattern can be diagnostic challenging. Pathologists can be unavoidably and unintentionally blind to non-descript tumor cells in a lymphohistiocytic- (LH) or small-cell (SC)-pattern. We report a case of primary systemic ALK+ ALCL with a SC pattern that presented as secondary gastric lesions with a mixed LH and SC pattern that was masqueraded as inflammatory lesions. CASE REPORT A 34-year-old woman with intractable epigastric pain was referred to have repeated endoscopy with biopsy. She was found to multiple gastric erosions and nodules that were diagnosed as inflammatory lesions both endoscopically and histologically. Meanwhile, she developed an acute onset of severe back pain associated with a pathologic compression fracture in the T3 thoracic vertebral body. Imaging studies disclosed a disseminated systemic disease involving abdominopelvic lymph nodes and cervical and thoracic vertebral bodies. The needle biopsy of the pelvic lymph node disclosed diffuse proliferation of monomorphic small round cells that were diffusely positive for CD30 and ALK. A diagnosis of ALK+ ALCL with a monomorphic SC pattern was rendered. DISCUSSION A retrospective review of the gastric biopsies with the aid of immunohistochemistry enabled us to recognise the presence of lymphomatous infiltrates with a mixed LH and SC pattern in every piece of gastric biopsies that were repeatedly misdiagnosed as inflammatory lesions. This case illustrates a significant diagnostic pitfall of the LH- and SC-patterns in ALK+ ALCL, in which the tumour cells featuring lymphoid, plasmacytoid or histiocytoid appearance can be masqueraded as inflammatory cells.
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Bee venom attenuates Porphyromonas gingivalis and RANKL-induced bone resorption with osteoclastogenic differentiation. Food Chem Toxicol 2019; 129:344-353. [PMID: 31055000 DOI: 10.1016/j.fct.2019.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 04/11/2019] [Accepted: 05/01/2019] [Indexed: 12/18/2022]
Abstract
Porphyromonas gingivalis (P. gingivalis) is one of the major periodontal pathogens leading to inflammation and alveolar bone resorption. Bone resorption is induced by osteoclasts, which are multinucleated giant cells. Osteoclastic bone resorption is mediated by enhanced receptor activator of nuclear factor-kappa B ligand (RANKL) signaling. Therefore, the down-regulation of RANKL downstream signals is regarded as an effective therapeutic target in the treatment of bone loss-associated disorders. The aim of this study was to evaluate whether purified bee venom (BV) could attenuate P. gingivalis-induced inflammatory periodontitis and RANKL-induced osteoclast differentiation. Inflammatory periodontitis induced by P. gingivalis increased alveolar bone resorption and increased expression of TNF-α and IL-1β, while BV treatment resulted in decreased bone loss and pro-inflammatory cytokines. Similarly, RANKL-induced multinucleated osteoclast differentiation and osteoclast-specific gene expression, such as nuclear factor of activated T cells 1 (NFATc1), cathepsin K, tartrate-resistant acid phosphatase (TRAP), and integrin αvβ3 were significantly suppressed by treatment with BV. We show that BV reduces P. gingivalis-induced inflammatory bone loss-related periodontitis in vivo and RANKL-induced osteoclast differentiation, activation, and function in vitro. These results suggest that BV exerts positive effects on inflammatory periodontitis associated osteoclastogenesis.
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Base of tongue cancer-is it tongue cancer located at the base of the tongue, or is it a type of lingual tonsil cancer? The perspective from a genomic analysis. Int J Oral Maxillofac Surg 2018; 47:846-853. [PMID: 29452725 DOI: 10.1016/j.ijom.2018.01.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 12/05/2017] [Accepted: 01/26/2018] [Indexed: 11/26/2022]
Abstract
The aim of this study was to determine whether base of tongue (BOT) cancer is tongue cancer located at the base of the tongue or lingual tonsil cancer originating from tonsil tissue. This was a retrospective study using data from The Cancer Genome Atlas (TCGA). The genomic patterns of three primary cancers (BOT, oral tongue, and tonsil) were compared to determine their similarities and differences. Gene expression data (n=193; 26 BOT, 125 oral tongue, and 42 tonsil cases), copy number alteration data (n=142; 19 BOT, 96 oral tongue, and 27 tonsil cases), and somatic mutation data (n=187; 25 BOT, 122 oral tongue, and 40 tonsil cases) were analyzed using the t-test, heatmap analysis, and OncoPrint, respectively. Clinical information for the three tumour groups was included in the analyses. When using multiplatform analysis, BOT cancer showed nearly the same genomic pattern as tonsil cancer, but not oral tongue cancer. The χ2 test and survival analysis revealed that BOT cancer had the same clinical and survival patterns as tonsil cancer. In conclusion, BOT cancer showed a genomic pattern similar to that of tonsil cancer, but different to that of oral tongue cancer. Further prospective studies are warranted before the results of this study can be applied in a clinical setting.
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Characterization of the reference wave in a compact digital holographic camera. APPLIED OPTICS 2018; 57:A235-A241. [PMID: 29328151 DOI: 10.1364/ao.57.00a235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 10/04/2017] [Indexed: 06/07/2023]
Abstract
A hologram is a recording of the interference between an unknown object wave and a coherent reference wave. Providing the object and reference waves are sufficiently separated in some region of space and the reference beam is known, a high-fidelity reconstruction of the object wave is possible. In traditional optical holography, high-quality reconstruction is achieved by careful reillumination of the holographic plate with the exact same reference wave that was used at the recording stage. To reconstruct high-quality digital holograms the exact parameters of the reference wave must be known mathematically. This paper discusses a technique that obtains the mathematical parameters that characterize a strongly divergent reference wave that originates from a fiber source in a new compact digital holographic camera. This is a lensless design that is similar in principle to a Fourier hologram, but because of the large numerical aperture, the usual paraxial approximations cannot be applied and the Fourier relationship is inexact. To characterize the reference wave, recordings of quasi-planar object waves are made at various angles of incidence using a Dammann grating. An optimization process is then used to find the reference wave that reconstructs a stigmatic image of the object wave regardless of the angle of incidence.
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Outbreak of Burkholderia cepacia pseudobacteraemia caused by intrinsically contaminated commercial 0.5% chlorhexidine solution in neonatal intensive care units. J Hosp Infect 2017; 98:295-299. [PMID: 28935523 DOI: 10.1016/j.jhin.2017.09.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 09/13/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND Burkholderia cepacia is intrinsically resistant to certain antiseptics. The authors noted a sudden increase in the frequency of isolation of B. cepacia from blood cultures in a neonatal intensive care unit (NICU) of a university-affiliated hospital. AIM To identify the source and intervene in the ongoing infections. METHODS The cases were defined as patients with positive blood cultures for B. cepacia in an NICU between November 2014 and January 2015. Medical records were reviewed and NICU healthcare workers were interviewed. Samples of suspected antiseptics, blood culture bottles, cotton balls, gauze and a needle used in the NICU were analysed microbiologically. FINDINGS During the outbreak period, B. cepacia was identified in 25 blood cultures obtained from 21 patients. The clinical features of the patients were suggestive of pseudobacteraemia. Regarding environmental samples, B. cepacia was cultured from 0.5% chlorhexidine gluconate (CHG) solution products that had been used as a skin antiseptic during blood drawing in the NICU. The clinical B. cepacia isolate and two strains obtained from 0.5% CHG exhibited identical pulsed-field gel electrophoresis patterns. After the CHG products were withdrawn, the outbreak was resolved. CONCLUSIONS The pseudobacteraemia cases were caused by contaminated 0.5% CHG produced by a single manufacturer. Stricter government regulation is needed to prevent contamination of disinfectants during manufacturing. In addition, microbial contamination of antiseptics and disinfectants should be suspected when a B. cepacia outbreak occurs in hospitalized patients.
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High-quality cell block preparation from scraping of conventional cytology slide: a technical report on a modified cytoscrape cell block technique. THE MALAYSIAN JOURNAL OF PATHOLOGY 2016; 38:295-304. [PMID: 28028300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Immunocytochemistry (ICC) on formalin-fixed paraffin embedded cell blocks is an ancillary tool commonly recruited for differential diagnoses of fine needle aspiration cytology (FNAC) samples. However, the quality of conventional cell blocks in terms of adequate cellularity and evenness of distribution of cytologic material is not always satisfactory for ICC. We introduce a modified agarose-based cytoscrape cell block (CCB) technique that can be effectively used for the preparation of cell blocks from scrapings of conventional FNAC slides. METHODS A decoverslipped FNAC slide was mounted with a small amount of water. The cytological material was scraped off the slide into a tissue mold by scraping with a cell scraper. The cytoscrape material was pelleted by centrifugation and pre-embedded in ultra-low gelling temperature agarose and then re-embedded in conventional agarose. The final agarose gel disk was processed and embedded in paraffin. RESULTS The quality of the ICC on the CCB sections was identical to that of the immunohistochemical stains on histological sections. By scrapping and harvesting the entirety of the cytological material off the cytology slide into a compact agarose cell button, we could avoid the risk of losing diagnostic material during the CCB preparation. CONCLUSION This modified CCB technique enables concentration and focusing of minute material while maintaining the entire amount of the cytoscrape material on the viewing spot of the CCB sections. We believe this technique can be effectively used to improve the level of confidence in diagnosis of FNAC especially when the FNAC slides are the only sample available.
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A digital approach to fabricating an abutment replica to control cement volume in a cement-retained implant prosthesis. J Prosthet Dent 2016; 116:25-8. [DOI: 10.1016/j.prosdent.2016.01.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 01/12/2016] [Accepted: 01/12/2016] [Indexed: 12/25/2022]
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An extended guide pin for a direct implant impression. J Prosthet Dent 2016; 116:826-827. [PMID: 27160782 DOI: 10.1016/j.prosdent.2016.03.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 02/25/2016] [Accepted: 03/08/2016] [Indexed: 11/24/2022]
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Retrospective Study of Sintered Porous-Surfaced Dental Implants Placed in the Augmented Sinus. INT J PERIODONT REST 2014; 34:565-71. [DOI: 10.11607/prd.1086] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ligation of the Left Hepatic Vein for Dilated Intrahepatic Collaterals Late After Fontan Operation. J Card Surg 2014; 29:564-6. [DOI: 10.1111/jocs.12317] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Clinical and angiographic features and stroke types in adult moyamoya disease. AJNR Am J Neuroradiol 2014; 35:1124-31. [PMID: 24384121 DOI: 10.3174/ajnr.a3819] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE This study was conducted to elucidate the association between clinical and angiographic characteristics and stroke types in adult Moyamoya disease that has been rarely evaluated. MATERIALS AND METHODS We analyzed the clinical and radiologic data obtained from a retrospective adult Moyamoya disease cohort with acute strokes, which were classified into 7 categories: large-artery infarct, hemodynamic infarct, perforator infarct, deep intracerebral hemorrhage, lobar intracerebral hemorrhage, intraventricular hemorrhage, and SAH. With conventional angiography, which was performed in the hemispheres with acute strokes, the Suzuki angiographic stage, intracranial aneurysm, major artery occlusion, and collateral vessel development were confirmed within 1 month of stroke onset. RESULTS This study included 79 patients with acute ischemic stroke and 96 patients with acute hemorrhagic stroke. The angiographic stage had a strong tendency to be more advanced in the hemorrhagic than the ischemic patients (P = .061). Intracranial aneurysms were more frequently found in the hemorrhagic than ischemic or control hemispheres (P = .002). Occlusions of the anterior cerebral artery and development of fetal-type posterior cerebral artery were more frequently observed in the hemorrhagic than the ischemic (P = .001 and .01, respectively) or control hemispheres (P = .011 and .013, respectively). MCA occlusion (P = .039) and collateral flow development, including the ethmoidal Moyamoya vessels (P = .036) and transdural anastomosis of the external carotid artery (P = .022), occurred more often in the hemorrhagic than the ischemic hemispheres. Anterior cerebral artery occlusion occurred more frequently in patients with deep intracerebral hemorrhage or intraventricular hemorrhage than with lobar intracerebral hemorrhage (P = .009). CONCLUSIONS In adult Moyamoya disease, major artery occlusion and collateral compensation occurred more often in the hemorrhagic than in the ischemic hemispheres. Thus, anterior cerebral artery occlusion with or without MCA occlusion and intracranial aneurysms may be the main contributing factors to hemorrhagic stroke in adult patients with Moyamoya disease.
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Low pulmonary vascular compliance predisposes post-Fontan patients to protein-losing enteropathy. Int J Cardiol 2013; 165:454-7. [DOI: 10.1016/j.ijcard.2011.08.848] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Accepted: 08/26/2011] [Indexed: 10/17/2022]
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Bisphosphonates-related osteonecrosis of the jaw in Korea: a preliminary report. J Korean Assoc Oral Maxillofac Surg 2013; 39:9-13. [PMID: 24471011 PMCID: PMC3858159 DOI: 10.5125/jkaoms.2013.39.1.9] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 10/09/2012] [Accepted: 10/29/2012] [Indexed: 12/13/2022] Open
Abstract
Objectives Bisphosphonates (BP) are widely used in medicine for inhibiting bone resorption; however bisphosphonate-related osteonecrosis of the jaw (BRONJ) is a major side effect of BP. To date, there have been no specific reports on the incidence of BRONJ among Koreans. This study investigated the preliminary results from a nationwide survey of BRONJ in the Departments of Oral and Maxillofacial Surgery (OMFS) at individual training hospitals. Materials and Methods A total of 15 OMFS departments (10 from dental schools, 4 from medical schools, and 1 from a dental hospital) participated in a multi-centric survey. This study assessed every BRONJ case diagnosed between January 2010 and December 2010. The patient age and BP type were evaluated. Results A total of 254 BRONJ cases were collected. The majority of BRONJ cases were associated with oral BP therapy, while 21.8% of the cases were associated with intravenous administration. Alendronate was the drug most frequently related to BRONJ (59.2% of cases), followed by risedronate (14.3%) and zolendronate (17.0%). The average age of BRONJ patients was 70.0±10.1 years, with a range of 38-88 years of age. With the number of BP patients in Korea reported to be around 600,000 in 2008, the estimated incidence of BRONJ is at least 0.04% or 1 per 2,300 BP patients. Conclusion The results suggest that the estimated incidence of BRONJ in Korea is higher than the incidence of other countries. Future prospective studies should be carried out to investigate the exact epidemiological characteristics of BRONJ in Korea.
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The correlation between expression of synuclein-gamma, glucose transporter-1, and survival outcomes in endometrioid endometrial carcinoma. EUR J GYNAECOL ONCOL 2013; 34:128-131. [PMID: 23781582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
PURPOSE To evaluate the correlation between immunohistochemical expression of synuclein-gamma, glucose transporter-1, and survival outcomes in endometrioid endometrial carcinoma. MATERIALS AND METHODS A tissue microarray was constructed using formalinfixed, paraffin-embedded tissue that included 23 early and 18 advanced cases. The intensity and area of the immunohistochemical reactions were evaluated using the semi-quantitative scoring system. RESULTS Synuclein-y expression was higher in the advanced stage, although it was not statistically significant (p = 0.51). Glucose transporter-1 was overexpressed in the advanced stage (p = 0.01). Synuclein-gamma (score = 0 vs > 0) and glucose transporter-1 (score < or = 7 vs > 7) did not show any differences in overall survival (p = 0.54, p = 0.48) and disease-free survival (p = 0.61, p = 0.14). CONCLUSION In this study the expression of synuclein-y and glucose transporter-1 were not considered to be a prognostic factor and were not related with survival outcomes in endometrioid endometrial carcinoma.
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Variations in the number of CCL3L1 gene copies and Kawasaki disease in Korean children. Pediatr Cardiol 2012; 33:1259-63. [PMID: 22450355 DOI: 10.1007/s00246-012-0289-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2011] [Accepted: 02/28/2012] [Indexed: 11/27/2022]
Abstract
High-dose intravenous immunoglobulin (IVIG) therapy is the highly effective and standard treatment for Kawasaki disease (KD). However, ~20 % of KD patients have persistent fever or recurrence of fever after the initial IVIG treatment, which increases the risk for coronary artery lesions (CALs). Furthermore, the mechanism of IVIG resistance in KD patients still is unknown. The number of CC chemokine ligand 3-like 1 (CCL3L1) gene copies is reported to be associated with KD and IVIG resistance in Japanese patients. In addition, the authors observed significant upregulation of the CCL3L1 gene expression after in vitro immunoglobulin treatment in B cell lines derived from KD patients. Therefore, this study of 459 KD patients and 496 healthy control subjects tested whether the number of CCL3L1 gene copies is associated with a risk of KD, CALs, and/or IVIG resistance in Korean KD patients. However, the number of CCL3L1 gene copies was not associated with KD (P = 0.18), CAL formation (P = 0.062), or the IVIG resistance (P = 0.90). Therefore, the results indicate that the number of CCL3L1 gene copies does not have a role in susceptibility to KD or CALs nor with IVIG resistance in Korean KD patients.
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Regional cerebellar volume reflects static balance in elite female short-track speed skaters. Int J Sports Med 2012; 34:465-70. [PMID: 23143696 DOI: 10.1055/s-0032-1327649] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The cerebellum plays a critical role in balance control. Particularly, elite short-track speed skaters require fine postural control to keep a postural balance during high velocity movement across smooth ice. We investigated whether skating proficiency and gender have an effect on the volume of cerebellar subregions and static balance, using 3-dimensional magnetic resonance imaging volumetry. In addition, we further analyzed which subregions of the cerebellum correlates with the balance. The volumes of cerebellar subregions and static balance index were compared among 12 male and 11 female elite short-track speed skaters, and 11 male and 14 female healthy matched subjects. We found significant main effects of skating proficiency and gender on the volume of vermian lobule VI-VII (declive, folium, and tuber), short-track speed skaters having greater volume than control and women revealing greater volume than men. Especially, in female athletic group, the volume of vermian lobule VI-VII significantly correlates with left static balance. In addition, men showed larger skating proficiency-related differences than women in the performance of static balance. The correlation between the volume of this region and static balance in female short-track speed skaters suggests that this region would plays a critical role in balance.
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Outcomes of mechanical valves in the pulmonic position in patients with congenital heart disease over a 20-year period. Ann Thorac Surg 2012; 95:1367-71. [PMID: 22884602 DOI: 10.1016/j.athoracsur.2012.07.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2012] [Revised: 07/03/2012] [Accepted: 07/10/2012] [Indexed: 11/28/2022]
Abstract
BACKGROUND Homografts or bioprosthetic valves have been preferred in the pulmonic position in patients with congenital heart disease. However, unsatisfactory long-term results have aroused interest in the use of mechanical valves. In this study, we investigated the long-term outcomes of mechanical valves implanted in the pulmonic position. METHODS The medical records of 37 patients (27 male, 73%) who underwent 38 mechanical pulmonary valve replacements between October 1988 and February 2011 were reviewed, retrospectively. The median age of patients was 13.5 years (range, 7 months to 23 years), and the median number of prior operations per patient was 2 (range, 0 to 5). Tetralogy of Fallot was the most common diagnosis (n=23). The median valve size was 23 mm (range, 17 to 27 mm), and the median follow-up duration after pulmonary valve replacement was 24.6 months (range, 1.3 months to 22.5 years). Events were defined as the following: valve failure, thrombosis, embolism, bleeding, reoperation, and death. RESULTS There was no in-hospital mortality, but there were 2 late deaths (1 heart failure and 1 traffic accident at 10.8 months and 8.7 years postoperatively, respectively). Excluding the traffic accident death, survival rates were 97%, 97%, and 97%, at 1, 5, and 10 years, respectively. Freedom from thromboembolism or bleeding events was 92%, 92%, and 78.8%, at 1, 5 and 10 years, respectively. Two reoperations were performed at 6.8 and 10.2 years postoperatively. Freedom from reoperation was 100%, 100%, and 85.7%, at 1, 5, and 10 years, respectively. CONCLUSIONS Durability of mechanical valve in pulmonic position was excellent. Thromboembolism or bleeding events due to anticoagulation therapy were rare. In growing patients who have undergone prior sternotomies requiring a pulmonary valve replacement, a mechanical valve could be an attractive option.
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Pulmonary hypertension due to obstructive sleep apnea in a child with Rubinstein-Taybi syndrome. KOREAN JOURNAL OF PEDIATRICS 2012; 55:212-4. [PMID: 22745646 PMCID: PMC3382702 DOI: 10.3345/kjp.2012.55.6.212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Revised: 09/05/2011] [Accepted: 11/30/2011] [Indexed: 12/16/2022]
Abstract
Rubinstein-Taybi syndrome (RTS) is characterized by peculiar facies, mental retardation, broad thumbs, and great toes. Approximately one-third of the affected individuals have a variety of congenital heart diseases. They can also have upper airway obstruction during sleep, due to hypotonia and the anatomy of the oropharynx and airway, which make these patients susceptible to obstructive sleep apnea (OSA). In our case, pulmonary hypertension was caused, successively, by congenital heart defects (a large patent ductus arteriosus and arch hypoplasia) and obstructive sleep apnea during early infancy. The congenital heart defects were surgically corrected, but persistent pulmonary hypertension was identified 2 months after the operation. This pulmonary hypertension was due to OSA, and it was relieved by nasal continuous positive airway pressure. This case is the first report of pulmonary hypertension from OSA in a young infant with RTS.
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Abstract
BACKGROUND AND PURPOSE KD is a rare chronic inflammatory disorder of unknown etiology. The purpose of this study was to evaluate the CT and MR imaging findings of KD in the head and neck. MATERIALS AND METHODS We retrospectively reviewed the CT (n = 21) and MR (n = 9) images obtained in 28 patients (24 males and 4 females; mean age, 32 years; age range, 10-62 years) with histologically proved KD in the head and neck. RESULTS In these 28 patients, CT and MR images demonstrated a total of 52 non-nodal lesions, 1-8 cm in greatest diameter, in the head and neck. The lesions were unilateral in 11 patients and bilateral in 17 patients. Eleven patients had a solitary lesion, and 17 patients had 2-4 lesions. The parotid and/or periparotid area was the most frequent location, with 36 lesions in 23 patients. The margin of the lesions was well-defined in 1 and ill-defined in 51 cases. Compared with the adjacent muscle, the MR signal intensity of all lesions was iso- to slightly hyperintense on T1-weighted images and hyperintense on T2-weighted images. Most of the lesions demonstrated mild or moderate enhancement on postcontrast CT scans and moderate or marked enhancement on postcontrast MR images. MR images also showed tubular signal-intensity voids in 7 of 13 lesions. Associated lymphadenopathy was demonstrated in 23 patients, usually bilaterally. CONCLUSIONS Multiple ill-defined enhancing masses within and around the parotid gland with associated regional lymphadenopathy are characteristic CT and MR imaging findings of KD in the head and neck.
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Assessment of risk factors for Korean children with Kawasaki disease. Pediatr Cardiol 2012; 33:513-20. [PMID: 22105492 DOI: 10.1007/s00246-011-0143-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2011] [Accepted: 11/03/2011] [Indexed: 01/06/2023]
Abstract
Kawasaki disease (KD) is the most common cause of acquired heart disease in children. Intravenous immunoglobulin (IVIG) is the standard therapy for KD, but more than 10% of KD patients do not respond to IVIG and are at high risk for the development of coronary artery lesions (CALs). To identify clinical and genetic risk factors associated with CAL development and IVIG nonresponsiveness, this study analyzed the clinical data for 478 Korean KD patients. Multivariate logistic regression analysis showed that incomplete KD, IVIG nonresponse, fever duration of 7 days or longer, and the CC/AC genotypes of the rs7604693 single nucleotide polymorphism (SNP) in the PELI1 gene were significantly associated with the development of CALs, with odds ratios (ORs) ranging from 2.06 to 3.04. The risk of CAL formation was synergistically increased by the addition of individual risk factors, particularly the genetic variant in the PELI1 gene. Multivariate analysis also showed that a serum albumin level of 3.6 g/dl or lower was significantly associated with nonresponsiveness to IVIG [OR, 2.76; 95% confidence interval (CI), 1.34-5.68; P = 0.006]. Conclusively, incomplete KD, IVIG nonresponsiveness, long febrile days, and the rs7604693 genetic variant in the PELI1 gene are major risk factors for the development of CALs, whereas low serum albumin concentration is an independent risk factor for IVIG nonresponsiveness.
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Anti-cancer properties of glucosamine-hydrochloride in YD-8 human oral cancer cells: Induction of the caspase-dependent apoptosis and down-regulation of HIF-1α. Toxicol In Vitro 2012; 26:42-50. [DOI: 10.1016/j.tiv.2011.10.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Revised: 07/28/2011] [Accepted: 10/06/2011] [Indexed: 12/25/2022]
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Effectiveness and safety of percutaneous transcatheter implantation of pulmonary arterial stent in congenital heart disease. Korean Circ J 2012; 42:40-5. [PMID: 22363382 PMCID: PMC3283753 DOI: 10.4070/kcj.2012.42.1.40] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Accepted: 09/21/2011] [Indexed: 11/12/2022] Open
Abstract
Background and Objectives Pulmonary arterial stenosis is a relatively common complication after corrective operation of congenital heart disease. Unilateral stenosis of pulmonary arteries could result in decrease perfusion of affected lung, pulmonary regurgitation, or elevation of right ventricular pressure. Eventually there are increasing risks of right ventricular failure, arrhythmia, or sudden death. However we have limited data of pulmonary arterial stent in paediatric population as the treatment of branch pulmonary stenosis. This study aimed at validating the effectiveness and investigating complications of pulmonary arterial stent implantation in a single institution during mid-term follow up period. Subjects and Methods A total of 42 patients (50 stents) were implanted for treating branch pulmonary arterial stenosis. We used cardiac catheterization for comparing diameter after stent implantation directly and lung perfusion scan indirectly. We also investigated any adverse effect relating the procedure. Results Percent stenosis of stenotic lesions were decreased from 54.1±10.7% to 22.8±12.5% (p<0.001) and degree of decrement in affected lung perfusion was declined from 22.7±8.0% to 10.3±9.0% (p<0.001) immediately and lasts during mid-term follow up period. Complication rate relating the procedure was 12% (6 out of 12) and there was no mortality case. Conclusion This series showed immediate and short term effectiveness of pulmonary arterial stent in congenital heart defects. We concluded that percutaneous transcatheter implantation of pulmonary arterial stent was safe and effective during short and mid-term follow up period.
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Multicenter clinical study on the hydrodynamic piezoelectric internal sinus elevation (HPISE) technique. J Korean Assoc Oral Maxillofac Surg 2012. [DOI: 10.5125/jkaoms.2012.38.2.85] [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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Right ventricular outflow tract stenting in a low birth weight infant born with tetralogy of fallot and prostaglandin e1 dependency. Korean Circ J 2011; 41:744-6. [PMID: 22259605 PMCID: PMC3257458 DOI: 10.4070/kcj.2011.41.12.744] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Accepted: 02/22/2011] [Indexed: 11/28/2022] Open
Abstract
Surgical skill and strategy for the correction of tetralogy of Fallot (TOF) have improved and resulted in satisfactory outcomes. However, prematurity and low birth weight continue to remain risk factors for poor outcomes. We present a case of a 2,150 g neonate born with TOF, in whom palliation was achieved with right ventricular outflow tract (RVOT) stenting. Seventy-seven days after the procedure, stenosis of RVOT below the stent was identified. At that time his body weight was 4.9 kg and total corrective surgery was deemed feasible. Eight months following surgical repair, the patient remained well without medical intervention. RVOT stenting may be a viable interim procedure while waiting for a low birth weight neonate born with TOF and prostaglandin E1 dependency to reach optimal weight to undergo corrective surgery.
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Genome-wide association study identifies FCGR2A as a susceptibility locus for Kawasaki disease. Nat Genet 2011; 43:1241-6. [PMID: 22081228 DOI: 10.1038/ng.981] [Citation(s) in RCA: 244] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Accepted: 09/22/2011] [Indexed: 12/16/2022]
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Perivascular brightness of coronary arteries in Kawasaki disease. J Pediatr 2011; 159:454-457.e1. [PMID: 21481416 DOI: 10.1016/j.jpeds.2011.02.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Revised: 02/07/2011] [Accepted: 02/23/2011] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Because perivascular echo brightness (PEB) of coronary arteries has been proposed as a criterion for diagnosis of incomplete Kawasaki disease, we assessed the clinical importance of PEB during the acute phase of disease. STUDY DESIGN We enrolled 58 patients with Kawasaki disease who underwent two-dimensional strain analysis of images of pericoronary tissue taken during the acute and the convalescent phases. Echogenicity of pericoronary tissue and of the blood pool was determined by speckle tracking in the respective areas of imaging as the averages of integrated backscatter over a single cardiac cycle. PEB was defined as echogenicity of pericoronary tissue minus blood pool. RESULTS PEB did not differ in the acute phase in patients and control subjects (P = .10) and between phases of disease (P = .25). In comparison between patient groups, the presence of pericardial effusion was higher in patients with higher PEB during the acute phase (n = 30) than in the remaining patients (33% versus 4%, P < .01). CONCLUSIONS PEB did not differ between patients and control subjects and is only associated with the presence of pericardial effusion during the acute phase of Kawasaki disease. Our data do not confirm the reliability of PEB as a useful diagnostic sign of incomplete Kawasaki disease.
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Log-transformed plasma level of brain natriuretic peptide during the acute phase of Kawasaki disease is quantitatively associated with myocardial dysfunction. KOREAN JOURNAL OF PEDIATRICS 2011; 54:340-4. [PMID: 22087201 PMCID: PMC3212704 DOI: 10.3345/kjp.2011.54.8.340] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Revised: 05/03/2011] [Accepted: 07/21/2011] [Indexed: 01/20/2023]
Abstract
Purpose Brain natriuretic peptide (BNP) has been considered a biochemical marker for myocarditis in Kawasaki disease. We performed this study to determine its quantitative significance. Methods We attempted to correlate log-transformed BNP concentrations (log-BNP) and clinical, laboratory, and echocardiographic variables in 81 children with Kawasaki disease. Stepwise multiple linear regression analysis was used to determine the variables independently associated with log-BNP concentration. Results Serum C-reactive protein level (P<0.0001), serum alanine aminotransferase concentration (P=0.0032), white blood cell count (P=0.0030), and left ventricular mass index (P=0.0024) were positively related with log-BNP, and hemoglobin level (P<0.0001), serum albumin level (P<0.0001), Na+ concentrations (P<0.0001), left ventricular fractional shortening (P=0.0080), and peak early diastolic tissue velocity of the left ventricular basal lateral segment (P=0.0045) were negatively related to the log-BNP concentration. Multiple regression analysis showed that serum albumin concentration (R2=0.31, P=0.0098) and left ventricular mass index (R2=0.09, P=0.0004) were significantly associated with the log-BNP concentration. Conclusion Elevated BNP levels during the acute phase of Kawasaki disease may be attributable to cardiac dysfunction associated with the increase in left ventricular mass, and log-BNP concentration may be a quantitative biochemical marker of myocarditis in Kawasaki disease.
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Synthesis and Characterization of Novel Hydrogenated Poly(norbornene bisimide)s Prepared from Ring Opening Metathesis Polymerization. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.8.3074] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Left ventricular function after left ventriculotomy for surgical treatment of multiple muscular ventricular septal defects. Ann Thorac Surg 2011; 92:1490-3. [PMID: 21839979 DOI: 10.1016/j.athoracsur.2011.04.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 03/31/2011] [Accepted: 04/06/2011] [Indexed: 10/17/2022]
Abstract
BACKGROUND Optimal management of muscular ventricular septal defects (MVSD) is still not determined in the current era. Moreover, long-term left ventricular function after closure of MVSD is not well known. Thus, we investigated surgical outcomes including long-term left ventricular function after closure of MVSD through left ventriculotomy. METHODS We conducted a retrospective review of medical records of 20 children who underwent MVSD closure between March 1993 and August 2010. There were 10 boys (50%) and 10 girls (50%). Patient age ranged from 1.6 to 103.4 months (median, 26.4 months), and body weight from 2.8 to 31.5 kg (median, 11.9 kg). Electrocardiogram results were normal sinus rhythm in all except 1 patient with congenital complete atrioventricular block. There were 16 patients who previously had palliative pulmonary artery banding procedures before closure of MVSD. There were 13 patients (65%) with Swiss-cheese type VSD. RESULTS There was 1 hospital death of a patient with congenital complete atrioventricular block with pacemaker malfunction (5%). There was 1 late death of a patient with del 22q with adenoviral pneumonia. There was no reoperation. Median follow-up duration was 85.9 months (range, 4.7 to 166.7). The location of MVSD was apical portion in 10 patients (50%) and midtrabecular portion in 9 patients (45%). There were 6 Dacron patch closures and 13 direct closures of MVSD through left ventriculotomy. There was no complete atrioventricular block. Last follow-up echocardiographic data showed normal ejection fraction with 65.2% ± 8.2% after closure of MVSDs. There was no leakage in 8 patients; 11 patients had insignificant leakage, which disappeared spontaneously in 4 patients 17.9 months (median value) after operation. CONCLUSIONS Our acceptable long-term results of left ventricular function after left ventriculotomy proved that this technique might be a viable option in the management of MVSD.
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The Relationship of Dysfunctions Degree, Daily Living Activity, Depressiveness and Quality of Life among the Elderly Suffering from Stroke. ACTA ACUST UNITED AC 2011. [DOI: 10.12811/kshsm.2011.5.2.173] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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The outcome of open heart surgery for congenital heart disease in infants with low body weight less than 2500 g. Pediatr Cardiol 2011; 32:578-84. [PMID: 21347835 DOI: 10.1007/s00246-011-9910-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2010] [Accepted: 01/31/2011] [Indexed: 11/26/2022]
Abstract
Although the outcome of neonatal cardiac surgery has dramatically improved, low body weight (LBW) is still considered an important risk for open heart surgery. The factors contributing to poor outcomes in LBW infants, however, are still unclear. We investigated risk factors for poor outcomes in infants weighing <2500 g who underwent surgical correction with cardiopulmonary bypass (CPB). From January 1995 to December 2009, 102 consecutive patients were included in this study. Median age and body weight at the time of surgery was 19 (range 1 to 365) days and 2.23 kg (range 1.3 to 2.5), respectively. Corrective surgery was performed on 75 infants. The median follow-up duration was 45.03 months (range 0.33 to 155.23). There were 23 (22.5%) hospital mortalities. Emergency surgery and low cardiac output (LCO) were associated with early mortality; however, body weight, Aristotle basic complex score, and type of surgery was not. Early morbidities, including delayed sterna closure, arrhythmia, and chylothorax, occurred in 39 (38.2%) infants. The overall actuarial survival rate at 10 years was 74.95% ± 4.37%. In conclusion, among infants weighing <2500 g who underwent open heart surgery with CPB, perioperative hemodynamic status, such as emergency surgery and LCO, strongly influenced early mortality. In contrast, LBW itself was not associated with patient morbidity or mortality.
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MESH Headings
- Abnormalities, Multiple/mortality
- Abnormalities, Multiple/surgery
- Actuarial Analysis
- Cardiac Output, Low/mortality
- Cardiac Output, Low/surgery
- Cardiopulmonary Bypass/mortality
- Cause of Death
- Child
- Child, Preschool
- Cohort Studies
- Emergencies
- Female
- Follow-Up Studies
- Heart Defects, Congenital/mortality
- Heart Defects, Congenital/surgery
- Hospital Mortality
- Humans
- Infant
- Infant, Low Birth Weight
- Infant, Newborn
- Infant, Premature, Diseases/mortality
- Infant, Premature, Diseases/surgery
- Infant, Very Low Birth Weight
- Male
- Postoperative Complications/mortality
- Risk Factors
- Survival Rate
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Molecular cytogenetic and clinical characterization of a patient with a 5.6-Mb deletion in 7p15 including HOXA cluster. Am J Med Genet A 2011; 155A:642-7. [DOI: 10.1002/ajmg.a.33860] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Accepted: 11/29/2010] [Indexed: 11/06/2022]
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Comparative study of removal torque of 3 different hydroxyapatite coated implants in the femur of rabbits. J Korean Assoc Oral Maxillofac Surg 2011. [DOI: 10.5125/jkaoms.2011.37.1.49] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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36
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New bone formation using fibrin rich block with concentrated growth factors in maxillary sinus augmentation. J Korean Assoc Oral Maxillofac Surg 2011. [DOI: 10.5125/jkaoms.2011.37.4.278] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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37
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Is free medical care possible? JOURNAL OF THE KOREAN MEDICAL ASSOCIATION 2011. [DOI: 10.5124/jkma.2011.54.11.1118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Analyses of left ventricular myocardial deformation by speckle-tracking imaging during the acute phase of Kawasaki disease. Pediatr Cardiol 2010; 31:807-12. [PMID: 20405115 DOI: 10.1007/s00246-010-9708-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Accepted: 04/01/2010] [Indexed: 01/20/2023]
Abstract
This study aimed to investigate left ventricular myocardial deformation in children with Kawasaki disease during the acute phase of their illness. A total of 50 patients and 35 normal control subjects were assessed. Data were obtained from the patients during the acute and convalescent phases of Kawasaki disease. Analyses of myocardial deformation [strain (epsilon), strain rate (SR)] was performed using two-dimensional speckle-tracking imaging in three directions (longitudinal, circumferential, and radial) at the basal and mid levels of the left ventricular myocardium. Basal longitudinal epsilon (P < 0.001) and midlongitudinal epsilon (P < 0.0001) were lower during the acute phase of the disease than in the control subjects and associated with serum albumin level and left ventricular mass index (LVMI). Midlongitudinal SR (P < 0.0001) was lower during the acute phase of Kawasaki disease than in the control subjects and associated with LVMI. Decreased systolic SR was not detected in any direction. In conclusion, left ventricular longitudinal systolic epsilon was significantly decreased during the acute phase of Kawasaki disease. This may be a result of myocardial swelling from myocarditis during the acute phase of the disease.
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Short-term influence of phosphate and nitrate on heavy metal accumulation by red alga Acrosorium uncinatum. ENVIRONMENTAL MONITORING AND ASSESSMENT 2010; 165:449-460. [PMID: 19421882 DOI: 10.1007/s10661-009-0958-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2008] [Accepted: 04/18/2009] [Indexed: 05/27/2023]
Abstract
Heavy metal accumulation (Cu, Zn, Ni, and Pb) in common marine macroalga, Acrosorium uncinatum under nutrient (phosphate and nitrate) enriched (experiment 1) and starved (experiment 2) conditions over a short exposure period (12 h) were examined in this study. Control was maintained in seawater contained nutrient solution without addition of metals and in seawater alone for experiment 1 and 2, respectively. Among the four metals studied, the accumulation of Zn, Ni, and Pb was considerably lower than Cu. The accumulation factor for all metals varies greatly in different nutrient concentrations, but it increases as the exposure of metal concentration decreases in both the experiments. The results of the present findings established that this macroalga is an accumulator of metals Cu, Zn, Ni, and Pb and have the potential to accumulate these metals even in a short time exposure period (12 h). Even though metal accumulation by A. uncinatum largely depends on the available concentration in the medium, nutrients like phosphate and nitrate can affect the accumulation significantly.
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Repair of Atrial Septal Defect With Eisenmenger Syndrome After Long-Term Sildenafil Therapy. Ann Thorac Surg 2010; 89:1629-30. [PMID: 20417794 DOI: 10.1016/j.athoracsur.2009.10.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2009] [Revised: 09/19/2009] [Accepted: 10/12/2009] [Indexed: 11/18/2022]
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Aspirin induces apoptosis in YD-8 human oral squamous carcinoma cells through activation of caspases, down-regulation of Mcl-1, and inactivation of ERK-1/2 and AKT. Toxicol In Vitro 2010; 24:713-20. [DOI: 10.1016/j.tiv.2010.01.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2009] [Revised: 11/03/2009] [Accepted: 01/25/2010] [Indexed: 01/04/2023]
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Machine learning methods applied to pharmacokinetic modelling of remifentanil in healthy volunteers: a multi-method comparison. J Int Med Res 2010; 37:1680-91. [PMID: 20146865 DOI: 10.1177/147323000903700603] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study compared the blood concentrations of remifentanil obtained in a previous clinical investigation with the predicted remifentanil concentrations produced by different pharmacokinetic models: a non-linear mixed effects model created by the software NONMEM; an artificial neural network (ANN) model; a support vector machine (SVM) model; and multi-method ensembles. The ensemble created from the mean of the ANN and the non-linear mixed effects model predictions achieved the smallest error and the highest correlation coefficient. The SVM model produced the highest error and the lowest correlation coefficient. Paired t-tests indicated that there was insufficient evidence that the predicted values of the ANN, SVM and two multi-method ensembles differed from the actual measured values at alpha = 0.05. The ensemble method combining the ANN and non-linear mixed effects model predictions outperformed either method alone. These results indicated a potential advantage of ensembles in improving the accuracy and reducing the variance of pharmacokinetic models.
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Amniotic fluid prostaglandin F2 increases even in sterile amniotic fluid and is an independent predictor of impending delivery in preterm premature rupture of membranes. J Matern Fetal Neonatal Med 2010; 22:880-6. [PMID: 19544157 DOI: 10.1080/14767050902994648] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To determine whether amniotic fluid (AF) concentration of prostaglandins (PGs) increases in patients with intra-amniotic inflammation and/or proven AF infection in preterm PROM, and can predict impending delivery. METHODS AF PGF2a concentrations were determined by ELISA in 140 singleton pregnancies with preterm premature rupture of membranes (PROM) (< or =35 weeks). AF was cultured for aerobic and anaerobic bacteria, and genital mycoplasmas. Intra-amniotic inflammation was defined as an elevated AF matrix metalloproteinase-8 concentration (>23 ng/ml). Results. (1) Patients with intra-amniotic inflammation and a negative AF culture had a significantly higher median AF PGF2a than those without intra-amniotic inflammation and with a negative culture (p < 0.001); (2) However, there was no difference in the median AF PGF2a between patients with intra-amniotic inflammation with a negative culture and those with culture-proven AF infection (p > 0.1); (3) Patients with an elevated AF PGF2a had a significantly shorter interval-to-delivery than those with a low AF PGF2a (< or =170 pg/mL) (p < 0.001); (4) An elevated AF PGF2a (< or =170 pg/mL) concentration was a significant predictor of the duration of pregnancy after adjusting for gestational age and AF inflammation/infection (p < 0.005). Conclusions. AF PGF2a (> or =170 pg/mL) concentration increased in patients with intra-amniotic inflammation regardless of AF culture results. Moreover, an elevated AF PGF2a concentration was an independent predictor of impending delivery in preterm PROM.
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Electrical properties and surface morphology of SiO(x)-Pt nano-composite thin films. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2010; 10:1111-1114. [PMID: 20352764 DOI: 10.1166/jnn.2010.1833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Recently, ceramic metals (cermets) have been widely investigated for use as embedded resistor materials. In this study, SiO-Pt nano-composite cermets were developed to control the resitivity and temperature coefficients of resistance (TCR) of embedded thin film resistors. The SiO-Pt nano-composite was prepared by the co-sputtering of a SiO(x) target and Pt chips onto glass. The experiments were conducted Pt concentrations in order to find the optimum conditions to achieve a high resistivity and low TCR. The electrical properties of the sputtered SiO-Pt thin films were investigated by probe station and their crystal structures were observed by X-Ray Diffraction (XRD) and X-ray Photoelectron Spectroscopy (XPS). The surface morphology was observed by field emission scanning electron microscopy (FE-SEM) and high resolution transmission electron microscopy (HR-TEM). It was found that the Pt particles with a size of 3 approximately 5 nm were uniformly dispersed in the SiO matrix. A stable resistivity value of 26000 approximately 57000 microomega x cm and TCR value of -197 approximately -322 ppm/K were obtained at 3.5 approximately 3.7 at.% Pt.
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Differential functions of genes regulated by VEGF-NFATc1 signaling pathway in the migration of pulmonary valve endothelial cells. FEBS Lett 2010; 584:141-6. [PMID: 19914243 DOI: 10.1016/j.febslet.2009.11.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2009] [Revised: 10/17/2009] [Accepted: 11/09/2009] [Indexed: 11/29/2022]
Abstract
We have reported that vascular endothelial growth factor (VEGF)-A induces the proliferation of human pulmonary valve endothelial cells (HPVECs) through nuclear factor in activated T cells (NFAT)c1 activation. Here we show that VEGF-A increases the migration of HPVECs through NFATc1 activation, suggesting that VEGF-A/NFATc1 regulates the migration of HPVECs. To learn how this pathway may be involved in post-natal valvular repair, HPVECs were treated with VEGF-A, with or without cyclosporine A to selectively block VEGF-NFATc1 signaling. Down Syndrome critical region 1 (DSCR1) and heparin-binding EGF-like growth factor (HB-EGF) are two genes identified by DNA microarray as being up-regulated by VEGF-A in a cyclosporine-A-sensitive manner. DSCR1 silencing increased the migration of ovine valve endothelial cells, whereas HB-EGF silencing inhibited migration. This differential effect suggests that VEGF-A/NFATc1 signaling might be a crucial coordinator of endothelial cell migration in post-natal valves.
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A case of ovarian endometrioid adenocarcinoma with yolk sac tumor in a 35-year-old woman. EUR J GYNAECOL ONCOL 2010; 31:471-474. [PMID: 20882900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Ovarian yolk sac tumor (YST) is a malignant ovarian neoplasm differentiated from primordial germ cells that occur in young age, while endometrioid carcinoma (ECA) is a müllerian epithelial tumor that usually occurs in older patients. The coexistence of an ovarian ECA and YST component is very rare. Only 12 cases have been reported until now according to a Medline search of the English literatures. We present a case of a simultaneous ECA and a YST component in a 35-year-old woman. Exploratory laparotomy was performed. The parts of both ovaries that showed an endometrioid-like glandular pattern were positive for cytokeratin 7 and negative for AFP, but the YST component was negative for cytokeratin 7 and positive for AFP. After completion of four courses of BEP chemotherapy, two courses of taxane and carboplatin chemotherapy were added. The patient failed to respond and succumbed to the disease after 12 months of follow-up.
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Coronary artery anomalies and clinically important anatomy in patients with congenital heart disease: multislice CT findings. Pediatr Radiol 2009; 39:265-73. [PMID: 19159923 DOI: 10.1007/s00247-008-1111-7] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2008] [Revised: 11/10/2008] [Accepted: 12/01/2008] [Indexed: 01/26/2023]
Abstract
In patients with congenital heart disease, coronary artery anomalies are common and have different clinical importance from individuals with structurally normal hearts. Visibility of the coronary arteries by CT has markedly improved due to high temporal resolution and ECG-synchronized data acquisition. In this article we describe current multislice CT techniques for coronary artery imaging and illustrate coronary artery anomalies and clinically important coronary artery anatomy from the point of view of congenital heart disease.
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Pulmonary vascular compliance and pleural effusion duration after the Fontan procedure. Int J Cardiol 2009; 133:55-61. [DOI: 10.1016/j.ijcard.2007.11.083] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2007] [Revised: 11/06/2007] [Accepted: 11/25/2007] [Indexed: 10/22/2022]
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Identification and Characterization of Human Genes Targeted by Natural Selection. Genomics Inform 2008. [DOI: 10.5808/gi.2008.6.4.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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The Severe Cognitive Impairment Rating Scale--an instrument for the assessment of cognition in moderate to severe dementia patients. Dement Geriatr Cogn Disord 2008; 25:321-8. [PMID: 18319591 DOI: 10.1159/000119124] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/05/2007] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS This study aimed to develop a brief, reliable and valid test for cognitive function of severely demented patients. METHODS We constructed the Severe Cognitive Impairment Rating Scale, which consisted of 11 items covering memory, language, visuospatial function, frontal function and orientation, and investigated its reliability and validity on 267 subjects [normal: 65, very mild Alzheimer's disease (AD): 42, mild AD: 58, moderate AD: 36, severe AD: 44, profound AD: 22]. RESULTS The internal consistency obtained by Cronbach's coefficient alpha was 0.93. The interrater reliability and test-retest reliability in the moderately to severely impaired subjects with an MMSE score of <or=14 was 0.99 (p < 0.001) and 0.90 (p < 0.001), respectively. It showed significant correlation with Severe MMSE (r = 0.96, p < 0.01), MMSE (r = 0.86, p < 0.01) and Clinical Dementia Rating (r = -0.83, p < 0.01). It was robust to both the floor effect in the severe/profound stage of AD and the ceiling effect in the mild/moderate stage of AD. Exploratory factor analysis yielded 2 factors (automatic informational processing and controlled informational processing) accounting for 73.5% of the total variance. CONCLUSIONS The Severe Cognitive Impairment Rating Scale is a valid and reliable test for evaluating the cognitive function of advanced AD patients.
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