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Three-dimensional remnant pancreatic volumetry as an indicator of poor prognosis in pancreatic cancer patients after pancreatoduodenectomy. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy432.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Three-dimensional remnant pancreatic volumetry predicts the short-term outcomes of pancreatic cancer patients after pancreatoduodenectomy. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx660.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Somatic mosaicism for a SLC2A1 mutation: implications for genetic counseling for GLUT1 deficiency syndrome. Clin Genet 2017; 91:932-933. [PMID: 28124377 DOI: 10.1111/cge.12902] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 10/18/2016] [Accepted: 10/20/2016] [Indexed: 11/30/2022]
Abstract
A heterozygous SLC2A1 mutation in the severely affected child was inherited from his less severely affected mother who was mosaic for the mutation.
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247P Impact of the preoperative neutrophil-to-lymphocyte ratio in the short term outcomes of patients with gastric cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw582.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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247P Impact of the preoperative neutrophil-to-lymphocyte ratio in the short term outcomes of patients with gastric cancer. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00404-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Preemptive Living Donor Kidney Transplantation and Kidney Function at the Initial Hospital Visit: A Single-Center Case-Control Study. Transplant Proc 2016; 48:827-30. [PMID: 27234745 DOI: 10.1016/j.transproceed.2015.11.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2015] [Revised: 10/10/2015] [Accepted: 11/11/2015] [Indexed: 11/18/2022]
Abstract
BACKGROUND Studies have revealed that patients who undergo preemptive kidney transplantation (PKT) have favorable prognoses compared with those who undergo kidney transplantation after the initiation of dialysis. The number of PKT cases performed worldwide has been increasing. The goal of this study was to determine the clinical characteristics of patients who may successfully receive PKT. METHODS A single-center, case-control study was conducted to determine the clinical factors that lead to referral for PKT. RESULTS Between April 1, 2009, and August 1, 2015, a total of 118 patients underwent living donor kidney transplantation. Thirty of these patients had not undergone dialysis before their initial visit to the study hospital. Of these, 20 received kidney transplantation before and after dialysis initiation, respectively (group PKT+, successful PKT; group PKT-, failed PKT). The baseline characteristics at the primary visit were compared between groups. The median duration from the first visit to the study institution to PKT was 5.6 ± 0.7 months. Serum creatinine (Cr) levels differed significantly between groups (PKT+ vs PKT-, 6.0 ± 0.3 mg/dL vs 7.5 ± 0.5 mg/dL; P = .03). The receiver-operating characteristic curves revealed that a serum Cr level >5.7 mg/dL at the initial visit to the unit was a cutoff point for predicting the success of PKT (area under the curve, 0.721; P = .02). CONCLUSIONS Our results indicate that PKT should be performed within ∼6 months of the initial visit to the transplant center. Serum Cr levels <5.7 mg/dL predict successful PKT.
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A parallel-group comparison study of celecoxib with loxoprofen sodium in third mandibular molar extraction patients. Int J Oral Maxillofac Surg 2014; 43:1509-13. [DOI: 10.1016/j.ijom.2014.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 07/03/2014] [Accepted: 09/05/2014] [Indexed: 10/24/2022]
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Japanese Multi-institutional Study of Stereotactic Body Radiation Therapy for Totally 380 Patients With Lung Metastases. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.08.235] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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A parallel-group comparison study of celecoxib with loxoprofen sodium in wisdom tooth extraction patients. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
BACKGROUND While J-waves were observed in healthy populations, variations in their reported incidence may be partly explicable by the ECG filter setting. METHODS We obtained resting 12-lead ECG recordings in 665 consecutive patients and enrolled 112 (56 men, 56 women, mean age 59.3±16.1years) who manifested J-waves on ECGs acquired with a 150-Hz low-pass filter. We then studied the J-waves on individual ECGs to look for morphological changes when 25-, 35-, 75-, 100-, and 150Hz filters were used. RESULTS The notching observed with the 150-Hz filter changed to slurring (42%) or was eliminated (28%) with the 25-Hz filter. Similarly, the slurring seen with the 150-Hz filter was eliminated on 71% of ECGs recorded with the 25-Hz filter. The amplitude of J-waves was significantly lower with 25- and 35-Hz than 75-, 100-, and 150-Hz filters (p<0.0001). CONCLUSIONS The ECG filter setting significantly affects the J-wave morphology.
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Crystal structures of histone chaperone CIA/ASF1-containing complexes. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311092890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Metal catalysts impregnated on porous media for aqueous phenol decomposition within three-phase fluidized-bed reactor. JOURNAL OF HAZARDOUS MATERIALS 2011; 185:606-612. [PMID: 20956059 DOI: 10.1016/j.jhazmat.2010.09.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2010] [Revised: 08/26/2010] [Accepted: 09/17/2010] [Indexed: 05/30/2023]
Abstract
Performance of metal catalysts to decompose aqueous phenol was experimentally investigated. Comparison of the phenol decomposition rates within three-phase fluidized-bed reactors utilizing only O(3), TiO(2) deposited on silica beads, metal catalyst (Ni or Co) impregnated on mesoporous carbon beads, or O(3) in combination with each catalyst was thoroughly examined. It was found that the use of Co catalyst with the presence of O(3) led to the best removal condition which aqueous phenol was completely decomposed within 10 min (k = 0.1944 min(-1)). In contrast, the use of TiO(2) without O(3) resulted in the worst decomposition of phenol (k = 0.0066 min(-1)). Some intermediate products, such as hydroquinone and catechol, were also detected but their final concentrations were negligibly low.
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Synergetic removal of aqueous phenol by ozone and activated carbon within three-phase fluidized-bed reactor. J IND ENG CHEM 2010. [DOI: 10.1016/j.jiec.2010.01.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Surface Melting and Lamella Rearrangement Process in Linear Low Density Polyethylene. J Phys Chem B 2009; 113:3385-94. [DOI: 10.1021/jp809686m] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Structure and function of the human histone chaperone CIA complexed with the bromodomain from TFIID. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308087941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Structure and function of the histone chaperone CIA/ASF1 complexed with histones H3 and H4. Acta Crystallogr A 2008. [DOI: 10.1107/s010876730808803x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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A step towards length control of titanate nanotubes using hydrothermal reaction with sonication pretreatment. NANOTECHNOLOGY 2008; 19:035601. [PMID: 21817575 DOI: 10.1088/0957-4484/19/03/035601] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
It was experimentally confirmed that the average length of titanate nanotubes (TNTs) can be increased and controlled to a certain degree by applying sonication pretreatment to their titania precursors prior to hydrothermal synthesis. Without sonication, the average length of the TNTs synthesized by the hydrothermal process was much shorter due to constricted diffusion of the hydroxyl ion (OH(-)) and the sodium ion (Na(+)) through the narrow interparticle space of agglomerated titania precursors, thereby retarding the TNT formation mechanism. On the other hand, much longer TNTs with an average hydrodynamic size of 490-1760 nm were produced when the sonication pretreatment was applied. Based on microscopic observations on the transformation of the present precursors and the reported nanotube formation phenomena during the hydrothermal process, a mechanism contributing to length control is proposed.
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cDNA microarray analysis assists in diagnosis of malignant intrarenal pheochromocytoma originally masquerading as a renal cell carcinoma. J Med Genet 2006; 42:e48. [PMID: 16061554 PMCID: PMC1736113 DOI: 10.1136/jmg.2005.031708] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Intrarenal pheochromocytoma (paraganglioma) is a very rare tumour. Its diagnosis is often difficult to establish because of its rarity and its histological similarity to renal cell carcinoma (RCC). Recently, we examined the molecular signatures of different subtypes of kidney tumours by using cDNA microarray. The signature pattern for one tumour, which was originally diagnosed as granular cell RCC, was clearly distinct from that of any other subtype of kidney tumour, and led us to re-evaluate the case. Haematoxylin and eosin staining revealed histological features suggestive of pheochromocytoma, and immunohistochemical studies showed positive staining for neuroendocrine markers but not for keratin. A germline missense mutation, D119E, in the familial paraganglioma related gene succinate dehydrogenase subunit D (SDHD), was subsequently identified. The treatment modality was revised and radiotherapy was given, to which the patient responded, leading to a reduction in tumour size of 25% within the first month. To our knowledge, this is the first report of an intrarenal pheochromocytoma that was diagnosed with the assistance of cDNA microarray analysis.
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Abstract
Since carbon nanotubes and onions were discovered, many methods have been proposed for their production. For applications the main requirements are low capital cost, high purity of the produced material, simplicity of technique, and its potential for scale up. Recently a cathodic arc between two graphitic electrodes immersed in liquids has been demonstrated to be a simple method to produce carbon nanoparticles such as nanotubes and onions. In this paper high-resolution transmission electron microscopy is employed to examine the shape of the nanoparticles and the purity of the final material produced under various conditions. In this study we have used an arc discharge in two different liquids--liquid nitrogen and distilled water--and we have changed the grade of the carbon electrodes. The variety in structure, shape, and size of the produced particles is discussed in line with a model proposed to describe the physical process.
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Removal of Toluene, Chlorobenzene, and Benzene by a Needle-to-Net Corona Discharge Reactor. Chem Eng Technol 2005. [DOI: 10.1002/ceat.200407108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
PURPOSE In our previous study, blood levels of orally administered tacrolimus were significantly higher in short bowel piglets than in control animals. It has been reported that the blood levels of tacrolimus are influenced by the metabolic activity of intestinal CYP3A4. If tacrolimus may be absorbed in the colon, direct administration of drug into this organ might be useful to augment bioavailability since the expression of CYP3A4 is low at this site. In the present study we evaluated the absorptive capacity of tacrolimus in the colon. MATERIALS AND METHODS Piglets were divided into four groups: groups 1 and 2 were controls (n = 11 and 3, respectively); group 3 underwent resection of the entire small intestine (n = 8); and group 4 had a catheter placed in the cecum (n = 4). In groups 1 and 3, tacrolimus was administered orally; in group 2 it was given intravenously; and in group 4 it was injected into cecum through the catheter from postoperative days 3 to 7. On day 7, blood samples were obtained for drug measurements to calculate the area under the concentration time curve (AUC) values. RESULTS The trough level and AUC values of tacrolimus in group 4 as well as in group 3 were significantly higher than those in group 1. In Group 4 animals showed a 60-minute time to peak concentration. CONCLUSIONS Tacrolimus is absorbed by the colon. Since the blood levels were not influenced by the metabolic activity in the graft bowel, direct administration of tacrolimus into the colon might be useful in small intestinal transplantation.
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Influence of Oxygen and Dissolved Inorganic Additives on the Removal of Gaseous Acetylaldehyde by Use of a Wetted-Wall Corona Discharge Reactor. Chem Eng Technol 2004. [DOI: 10.1002/ceat.200402092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Patients with mild hypertensive heart disease and left ventricular outflow tract obstruction: treatment with angiotensin II antagonists. Heart Vessels 2004; 19:248-51. [PMID: 15372301 DOI: 10.1007/s00380-003-0756-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2002] [Accepted: 12/12/2003] [Indexed: 10/26/2022]
Abstract
Systolic anterior motion of the mitral leaflet (SAM) combined with obstruction at the left ventricular (LV) outflow tract is often observed on echocardiography in elderly hypertensive patients with severe concentric LV hypertrophy. We experienced, however, two patients with mild hypertension who had an ejection systolic murmur, SAM, and LV outflow tract obstruction with a pressure gradient of 46 and 45 mmHg, respectively, despite very mild symmetric hypertrophy of LV wall (12 mm) by echocardiography. Treatment with angiotensin II type 1 receptor blocker improved intraventricular obstruction and LV hypertrophy in both patients. Left ventricular outflow tract obstruction should be suspected in hypertensive patients with mild LV hypertrophy, particularly in those with an ejection systolic murmur. Angiotensin II antagonists could be considered as the treatment of choice for such patients.
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Three-year results of stereotactic three dimensional (3-D) conformal multiple dynamic arc radiotherapy for stage I non-small cell lung cancer (NSCLC) using a linear accelerator unified with self-moving CT scanner (linac-CT unit) and patient’s self-breath and beam control technique. Int J Radiat Oncol Biol Phys 2004. [DOI: 10.1016/j.ijrobp.2004.07.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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A Kinetic Model of Degradation of Phenol in Water by Direct Contact of Gas Nonpulsed Corona Discharge. Chem Eng Technol 2004. [DOI: 10.1002/ceat.200401804] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
PURPOSE In our previous study, the blood levels of tacrolimus were higher in the short bowel and small bowel transplantation models than those in controls. Metabolism by intestinal cytochrome p450 3A4 (CYP3A4) has been reported to influence the blood level of orally administered tacrolimus. We performed immunohistochemistry to examine the localization of intestinal CYP3A4. MATERIALS AND METHODS Twenty-four piglets were divided into three groups: group 1 were controls (n = 11); group 2, ileal resection of 2/3 proximal small intestine (n = 5); and group 3, total small intestinal resection followed by 1/3 allotransplantation of ileum (n = 8). Tacrolimus was orally administered from postoperative days 3 to 7. On day 7, blood samplings were performed for the trough level and the calculation of area under the concentration time curve (AUC). Intestinal specimens from the jejunum, ileum, colon, and ileal graft were obtained on days 0 and 10 for immunohistochemistry of CYP3A4. RESULTS The trough and AUC values in group 2 were significantly higher than those in group 1. Furthermore those measurements in group 3 animals were higher than in group 2 (trough levels: 2.5 +/- 1.7, 11.2 +/- 2.1, 16.3 +/- 2.7 ng/mL and AUC values: 126 +/- 90, 319 +/- 155, 546 +/- 117 ng. h/mL). The expression levels of CYP3A4 were, jejunum > ileum > ileal graft > colon. CONCLUSIONS The intensity and extent of CYP3A4 staining diminished in the ileal graft showing an inverse correlation to the blood concentrations.
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Temperature Effect on Removal of Sulfur Dioxide and Benzene in Humid Air by DC Corona Discharge. Chem Eng Technol 2004. [DOI: 10.1002/ceat.200401851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
A 7-year-old boy with acute lymphoblastic leukemia (ALL) in second remission received an allogeneic PBSCT from his HLA-matched sister. Acute grade II graft-versus-host disease (GVHD) resolved with corticosteroids. Chronic GVHD in the skin and oral mucosa at around day 60 responded to corticosteroids and cyclosporin A. At 6 months after the transplant, he developed hepatic dysfunction with elevated serum transaminases and gamma-globulin. Liver biopsy revealed chronic inflammation with lymphocytes and plasma cells in portal areas without destruction of bile ducts, suggesting autoimmune hepatitis. While rare, autoimmune hepatitis should be considered a potential long-term complication in patients with hepatic dysfunction in the late post-transplant phase.
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Carbon onions: carriers of the 217.5 nm interstellar absorption feature. PHYSICAL REVIEW LETTERS 2003; 90:155504. [PMID: 12732047 DOI: 10.1103/physrevlett.90.155504] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2003] [Indexed: 05/24/2023]
Abstract
Ultraviolet-visible absorption measurements of high purity and well separated carbon onion samples are reported. The results show that, after purification, absorption features from carbon onions match well with the interstellar UV spectrum. The measurements show that the absorption peak position remains constant at 4.55+/-0.1 microm(-1), and the width varies from 1.2-1.6 microm(-1), a key feature of the interstellar spectrum. The similarities between the experimental and observed absorption spectra indicate that carbon onions are very strong candidates for the origin of the UV interstellar absorption peak at 4.6 microm(-1).
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Documentary of inter and intra-fractional prostate motion using self-moving CT scanner combined with linear accelerator, and cine-MRI: what moves the prostate. Int J Radiat Oncol Biol Phys 2002. [DOI: 10.1016/s0360-3016(02)03510-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Clinical use of stereotactic 3-D conformal multiple dynamic arc radiotherapy for stage I non-small cell lung cancer using a linear accelerator combined with self-moving ct scanner and patient’s self-breath and beam control technique. Int J Radiat Oncol Biol Phys 2002. [DOI: 10.1016/s0360-3016(02)03398-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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A case of lupus nephritis with alteration of the glomerular basement membrane associated with Takayasu's arteritis. Clin Nephrol 2002; 58:161-5. [PMID: 12227690 DOI: 10.5414/cnp58161] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A 47-year-old Japanese woman with both Takayasu's arteritis (TA) and systemic lupus erythematosus (SLE) presented with unequal pulses in the upper extremities, diarrhea and proteinuria. In 1986, when she was 38 years old, angiography revealed stenosis of the left subclavian artery. In 1994, SLE was diagnosed on the basis of clinical and laboratory findings, including renal dysfunction, hematologic and immunologic abnormalities, a high titer of antinuclear antibody and a positive lupus band test on the skin. Renal biopsy showed lupus nephritis and glomerular lesions with a bubble-like appearance of the glomerular capillary wall with TA. Lupus nephritis coexisting with glomerulonephropathy associated with TA has rarely been reported.
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Oral FK 506 blood levels are elevated in pig short bowel model: further investigations with co-administration of an intestinal CYP3A4 inhibitor. Transplant Proc 2002; 34:1050-1. [PMID: 12034301 DOI: 10.1016/s0041-1345(02)02708-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Abstract
AIMS Acinic cell-like breast carcinoma is a newly recognized entity, and few acinic cell-like breast carcinoma cases have been reported. All reported acinic cell-like breast carcinomas were counterparts of the solid type of acinic cell carcinoma of the salivary gland. We report here three cases of secretory breast carcinoma with acinic cell differentiation, and discuss the similarity between secretory breast carcinoma and acinic cell carcinoma of the salivary gland. METHODS AND RESULTS The cases were histologically identical to acinic cell carcinoma of the salivary gland: papillary-cystic type in case 1, a mixture of papillary-cystic, microcystic and follicular type in case 2, and microfollicular type in case 3. Immunohistochemically, the tumour cells were positive for salivary-type amylase, lysozyme, S100 protein and alpha 1-antitrypsin, and negative or less reactive for gross cystic disease fluid protein-15 and oestrogen receptor. All three cases did not reveal metastasis or recurrence. CONCLUSIONS These cases were typical of secretory breast carcinoma, and were clinically, histologically and immunohistochemically analogous to acinic cell carcinoma of the salivary gland. We emphasize that secretory breast carcinoma and acinic cell carcinoma of the salivary gland may be identical lesions.
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Abstract
Biliary atresia (BA) is the most common cause of obstructive jaundice in infancy. Although the etiology of BA remains unknown, the ductal plate malformation has been considered to play an important role in the development of BA. Cell-cell adhesion has long been recognized as one of the most important processes in organogenesis. E-cadherin is involved in cell-cell adhesion, together with the catenins. Abnormalities of E-cadherin and associated catenins have not been examined in detail in the liver with BA. We therefore examined immunolocalization of E-cadherin and alpha- and beta-catenins in the BA liver (n = 45) and compared the findings with those in non-BA (n = 11) and fetal liver (n = 21). We semiquantitatively evaluated the findings using H score, which were generated according to the percentage of immunopositive cells and their immunointensity. We also examined mRNA localization of E-cadherin using mRNA in situ hybridization. We then studied the correlation of E-cadherin immunoreactivity with apoptotic cells, and cyclin-dependent kinase inhibitor p27Kip1 immunolocalization of bile duct cells in BA liver (n = 10) and fetal liver (n = 10). In fetal liver, H score of E-cadherin, but not of alpha- and beta-catenins, was significantly lower in the remodeling stage than in the ductal plate (P = 0.0034) and remodeled stages (P = 0.0024). In addition, the H score of E-cadherin, but not alpha- and beta-catenin, in bile duct cells was significantly lower in BA liver than in non-BA liver (P = 0.0132). E-cadherin mRNA hybridization signals were relatively conserved in bile duct cells of BA liver, but decreased in remodeling ductal plate cells of fetal liver. An inverse correlation was detected between the H score of E-cadherin and the TUNEL labeling index (LI) in both fetal and BA liver. In contrast, a positive correlation was detected between the H score of E-cadherin and p27 LI in both fetal and BA liver. These findings suggest that impaired expression of E-cadherin in bile ducts may play an important role in the biological features of BA, possibly associated with cell cycle and apoptosis.
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High trough levels of oral FK506 induced by loss of small intestine. Pediatr Transplant 2001; 5:434-8. [PMID: 11737769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
To establish a safe and effective usage of oral tacrolimus (FK506) in small bowel transplantation (SBTx) recipients, trough levels and area under the curve (AUC) values of FK506 were assessed using swine models of SBTx and short bowel. Thirty-eight Landrace male piglets were divided into four groups as follows: Group 1, controls (n=13); Group 2, a one-third small bowel model (n=5); Group 3, a short bowel model (n=10); and Group 4, a one-third small bowel allograft model (n=10; five donors and five recipients). Piglets of Groups 1 and 3 were further divided into two sub-groups, according to the route of drug administration: Groups 1a (n=10) and 3a (n=7) received FK506 orally, and Groups 1b (n=3) and 3b (n=3) received FK506 intravenously. Oral or intravenous FK506 was started on post-operative day 3 and continued until day 7 in each group. On day 7, trough levels and AUC values were measured. In Groups 1a, 2, 3a and 4, trough levels of FK506 were 2.1+/-1.2 (p<0.01 vs. Group 2, 3a or 4), 11.2+/-2.1, 23.3+/-4.8 (p<0.05 vs. Group 2 or 4) and 14.6+/-3.0 ng/mL, and AUC values were 101+/-90 (p<0.01 vs. Group 3a or 4), 319&+/-155, 808+/-200, and 531+/-113 ng.h/mL, respectively. Both trough levels and AUC values were lowest in Group 1a and highest in Group 3a. Between Groups 1b and 3b, there was no significant difference in the blood levels of intravenous FK506. The shorter the functioning residual small intestine was, the higher the trough level of oral FK506 was, while the presence or absence of small intestine did not affect blood levels of intravenous FK506. These results suggest that oral FK506 is metabolized in the functioning small intestine during its absorption. Therefore, events which cause intestinal malfunction, such as graft rejection in SBTx, inflammation and loss of small intestine, may adversely raise the trough level of oral FK506.
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Localization and roles of CD44, hyaluronic acid and osteopontin in IgA nephropathy. Nephron Clin Pract 2001; 89:416-21. [PMID: 11721159 DOI: 10.1159/000046113] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
An important function of CD44 is to act as a cellular receptor for hyaluronic acid and osteopontin. Cell-matrix interactions mediated by the CD44/hyaluronic acid receptor-ligand pair are involved in the regulation of leukocyte migration and activation. Osteopontin is a molecule associated with cell adhesion and migration and functions through binding to CD44. This study examined whether CD44, hyaluronic acid and osteopontin participate in the progression of IgA nephropathy. CD44 was expressed in mesangial cells, crescents, tubular cells and interstitial infiltrating cells in areas of tubulointerstitial injury. Hyaluronic acid was deposited in the capillary tuft of adhesion, crescents and the periglomerular area, and around damaged tubules. Osteopontin was expressed in tubular cells and interstitial infiltrating cells in areas of tubulointerstitial injury. The glomerular and interstitial deposition of hyaluronic acid correlated with the glomerular and interstitial expression of CD44. The interstitial expression of CD44 correlated with the interstitial expression of osteopontin. The expression of both CD44 and osteopontin in the interstitium correlated with the extent of tubulointerstitial damage. The expression of CD44 in the interstitium correlated with the severity of chronic glomerular lesions. The glomerular and interstitial CD44 and hyaluronic acid expression correlated with proteinuria, and interstitial CD44 and hyaluronic acid expression correlated with creatinine clearance rate. In summary, this study suggests that CD44 participates in the progression of IgA nephropathy by binding hyaluronic acid and osteopontin.
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Abstract
The fabrication of carbon nanomaterials usually calls for expensive vacuum systems to generate plasmas and yields are disappointingly low. Here we describe a simple method for producing high-quality spherical carbon nano-'onions' in large quantities without the use of vacuum equipment. The nanoparticles, which have C60 cores surrounded by onion-like nested particles, are generated by an arc discharge between two graphite electrodes submerged in water. This technique is economical and environmentally benign, and produces uncontaminated nanoparticles which may be useful in many applications.
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[Respiratory function tests--current and future perspective]. RINSHO BYORI. THE JAPANESE JOURNAL OF CLINICAL PATHOLOGY 2001; 49:1096-101. [PMID: 11769554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
The apparatus for the respiratory function test have recently made a great progress and become very easy to handle owing to the development of computer technology and medical ordering system. However, the respiratory function tests depend its result on the cooperation of patients. Thus, it is important for the medical technician to obtain the maximum efforts and cooperation of the patients in the testing. In the sense, the standardization of the testing should be done urgently regarding procedures, softwares, hardwares and maintenance of apparatus. In the future perspectives, we would like to emphasize following 3 points. First, more noninvasive and sophisticated testing methods and instruments should be developed, since the patients' age will become more and more old and vigorous active cooperation may not be possible for the assessment of respiratory function. The testing for the transplantation of lung should also be developed. Second, the development of screening test and its performance for the routine medical check for the local inhabitants have been important for the early detection, treatment, and follow up of respiratory diseases. Finally, the medical technician should be prepared so that the testing is available when it is needed.
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Abstract
Recent studies have generated mixed findings regarding the effects of distraction on exposure-based treatments. Results have also been inconsistent regarding the effects of monitoring and blunting coping styles on outcome. The present study attempted to integrate these two areas of research. We hypothesized that the effect of distraction on treatment outcome might depend on coping style. Specifically, we predicted that for blunters (i.e.. individuals who tend to avoid threat-related information), distraction would interfere with the effects of exposure. However, we predicted that distraction might benefit monitors (i.e., individuals who tend to seek out threat-related information). Sixty individuals with a specific phobia of spiders underwent a single, two-hour session of exposure treatment. During the first hour, half of the participants were distracted by listening to an audiotape and the other half underwent exposure without distraction. In the second hour, all participants underwent focused exposure. Based on measures of heart rate, subjective fear, and behavioral testing, participants improved after one hour of treatment, and improved further during the second hour. However, neither distraction, coping style, nor their interaction had a significant effect on outcome. The present study provides support for the benefits of behavioral treatment for specific phobias. However, our hypotheses regarding distraction and coping style were not confirmed.
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Abstract
Biliary organic anion excretion is mediated by an ATP-dependent primary active transporter, multidrug resistance protein 2. On the other hand, a multiplicity of canalicular organic anion transport has been suggested. Ursodeoxycholic acid, the 7beta-epimer of chenodeoxycholic acid, is clinically used for various hepatobiliary diseases. In our previous study, the contribution of multidrug resistance protein 2 for biliary excretion of taurine-conjugated bile acid sulfates depended on the numbers of hydroxyl residue. Therefore, to further examine the effect of hydrophobicity on the substrate specificity of multidrug resistance protein 2, we examined the effect of bile acid conjugates and organic anions on biliary excretion of tauroursodeoxycholate-3-sulfate, taurine and sulfonate-conjugated ursodeoxycholic acid, in rats. Biliary tauroursodeoxycholate-3-sulfate excretions was markedly delayed in Eisai hyperbilirubinemic rats. Taurolithocholate-3-sulfate inhibited but ursodeoxycholate-3,7-disulfate did not affect biliary tauroursodeoxycholate-3-sulfate excretion. Biliary tauroursodeoxycholate-3-sulfate excretion was inhibited by sulfobromophthalein, but was not inhibited by dibromosulfophthalein and cefpiramide. These findings indicate that tauroursodeoxycholate-3-sulfate is very specific for multidrug resistance protein 2.
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Abstract
Temocapril is a prodrug of an angiotensin-converting enzyme inhibitor, temocaprilat, a substrate of multidrug resistance protein 2. Hepatocytes in zone 1 play a role in the uptake and biliary excretion of bile acids under physiological condition, and those in zone 3 may play a role only with their high-dose load. To investigate the pharmacokinetics of temocapril in liver injury, biliary excretion of temocapril was studied in zone 1- and zone 3-injured rats, caused by allyl alcohol and bromobenzene, respectively. Biliary excretion of a tracer dose of radiolabeled temocapril was delayed both in zone 1 and the zone 3 injury, but the extent of inhibition was more prominent in zone 3 injury. Since biliary excretion of organic anions was decreased only in zone 1 injury in our previous study, the present findings indicate that decreased biliary excretion of temocaprilat in zone 3 injury is caused by the inhibition of the metabolism from temocapril to temocaprilat.
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Abstract
Cyclosporin A, a substrate of P-glycoprotein (P-gp), is known to cause cholestasis in humans and in rat experimental models. Tauroursodeoxycholate is reported to be effective in CyA-induced cholestasis in rats. In the present study, to investigate the mechanism of the inhibition of CyA induced cholestasis, effect of bile acids on biliary cyclosporin A excretion was studied in rats. Infusion of both taurocholate and tauroursodeoxycholate at the rate of 0.8 mmol/min per 100 g bodyweight increased bile flow and biliary cyclosporin A excretion, and the extent was more prominent with tauroursodeoxycholate. It was suggested that these findings were caused by the enhanced vesicular targeting of P-gp to the canalicular membrane by bile acids, thus increasing the numbers of P-gp in the canalicular membrane.
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[Central diabetes insipidus caused by neurosarcoidosis]. NIHON NAIKA GAKKAI ZASSHI. THE JOURNAL OF THE JAPANESE SOCIETY OF INTERNAL MEDICINE 2001; 90:690-2. [PMID: 11391919 DOI: 10.2169/naika.90.690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Development of a new linac system combined with a self-moving CT and a single common couch. Eur J Cancer 2001. [DOI: 10.1016/s0959-8049(01)81270-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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