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Sawada K, Inoue D, Wada Y, Sei K, Nakanishi T, Ike M. Detection of retinoic acid receptor agonistic activity and identification of causative compounds in municipal wastewater treatment plants in Japan. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2012; 31:2189-2190. [PMID: 23077743 DOI: 10.1002/etc.1940] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
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Une K, Takagi I, Sawada K, Miyamura S, Aomi M. Deuterium diffusion in LiOH–water-corroded oxide layer of zirconium alloys. PROGRESS IN NUCLEAR ENERGY 2012. [DOI: 10.1016/j.pnucene.2011.11.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Yamaguchi S, Charnov EL, Sawada K, Yusa Y. Sexual Systems and Life History of Barnacles: A Theoretical Perspective. Integr Comp Biol 2012; 52:356-65. [DOI: 10.1093/icb/ics046] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Saito A, Sawada K, Fujimura S, Suzuki H, Hirukawa T, Tatsumi R, Kanai G, Takahashi H, Miyakogawa T, Sanechika N, Fukagawa M, Kakuta T. Evaluation of bioartificial renal tubule device prepared with lifespan-extended human renal proximal tubular epithelial cells. Nephrol Dial Transplant 2012; 27:3091-9. [DOI: 10.1093/ndt/gfr755] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Iwayama T, Yanagita M, Mori K, Sawada K, Ozasa M, Kubota M, Miki K, Kojima Y, Takedachi M, Kitamura M, Shimabukuro Y, Hashikawa T, Murakami S. Adiponectin regulates functions of gingival fibroblasts and periodontal ligament cells. J Periodontal Res 2012; 47:563-71. [PMID: 22339084 DOI: 10.1111/j.1600-0765.2012.01467.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE Adiponectin is a cytokine constitutively produced by adipocytes and exhibits multiple biological functions by targeting various cell types. However, the effects of adiponectin on primary gingival fibroblasts and periodontal ligament cells are still unexplored. Therefore, we investigated the effects of adiponectin on gingival fibroblasts and periodontal ligament cells. MATERIAL AND METHODS The expression of adiponectin receptors (AdipoR1 and AdipoR2) on human gingival fibroblasts (HGFs), mouse gingival fibroblasts (MGFs) and human periodontal ligament (HPDL) cells was examined using RT-PCR and western blotting. HGFs and MGFs were stimulated with interleukin (IL)-1β in the presence or absence of adiponectin, and the expression of IL-6 and IL-8 at both mRNA and protein levels was measured by real-time PCR and ELISA, respectively. Furthermore, small interfering RNAs (siRNAs) in MGFs were used to knock down the expression of mouse AdipoR1 and AdipoR2. The effects of adiponectin on the expression of alkaline phosphatase (ALP) and runt-related transcription factor 2 (Runx2) genes were evaluated by real-time PCR. Mineralized nodule formation of adiponectin-treated HPDL cells was revealed by Alizarin Red staining. RESULTS AdipoR1 and AdipoR2 were expressed constitutively in HGFs, MGFs and HPDL cells. Adiponectin decreased the expression of IL-6 and IL-8 in IL-1β-stimulated HGFs and MGFs. AdipoR1 siRNA in MGFs revealed that the effect of adiponectin on reduction of IL-6 expression was potentially mediated via AdipoR1. Adiponectin-treated HPDL cells promoted the expression of ALP and Runx2 mRNAs and up-regulated ALP activity. Furthermore, adiponectin enhanced mineralized nodule formation of HPDL cells. CONCLUSION Our observations demonstrate that adiponectin exerts anti-inflammatory effects on HGFs and MGFs, and promotes the activities of osteoblastogenesis of HPDL cells. We conclude that adiponectin has potent beneficial functions to maintain the homeostasis of periodontal health, improve periodontal lesions, and contribute to wound healing and tissue regeneration.
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Sawada K, Nagano K, Nishino N. The relationship between plasma 3-methylhistidine concentration and forage intake in early lactating dairy cows. Livest Sci 2012. [DOI: 10.1016/j.livsci.2011.09.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hirabayashi D, Tanada Y, Sugiyama T, Enokida Y, Sawada K. Low-temperature conversion of spent adsorbent to iodine sodalite by a mechanochemical route. AIChE J 2011. [DOI: 10.1002/aic.12756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kawashima C, Nagashima S, Sawada K, Schweigert FJ, Miyamoto A, Kida K. Effect of β-carotene supply during close-up dry period on the onset of first postpartum luteal activity in dairy cows. Reprod Domest Anim 2011; 45:e282-7. [PMID: 20002607 DOI: 10.1111/j.1439-0531.2009.01558.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The aim of this study was to examine the effect of β-carotene supply during the close-up dry period on the onset of first postpartum luteal activity in dairy cows. Twelve cows were supplied with 2000 mg of β-carotene (20 g Rovimix(®) β-Carotene containing 10% β-carotene; DSM Nutrition Japan K.K., Tokyo, Japan) by oral administration daily from day 21 before expected calving date to parturition. Fourteen cows (control) did not receive β-carotene supplementation. Blood samples were obtained on days 21, 14 and 7 before expected calving date and on days 1, 7, 14, 21 postpartum. When the plasma progesterone concentration exceeded 1 ng/ml by day 21 postpartum, luteal activity was assumed to have been initiated. The result showed that serum β-carotene concentrations in the β-carotene cows were higher than in the control cows during the experimental period (p < 0.01). The number of cows with the onset of luteal activity by day 21 postpartum was 9/12 in the β-carotene cows and 4/14 in the control cows (p < 0.05). Retinol, certain metabolic parameters and metabolic hormones concentrations did not differ between β-carotene and control cows. In addition, serum retinol concentration in β-carotene cows without luteal activity was lower than in β-carotene cows with luteal activity (p < 0.05), and serum gamma-glutamyl transpeptidase concentration in β-carotene cows with luteal activity (p < 0.05) and control cows without luteal activity (p < 0.01) was higher than in control cows with luteal activity. In conclusion, β-carotene supply during the close-up dry period may support the onset of luteal activity during early lactation in dairy cows.
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Iwai K, Hashimoto K, Nishizawa K, Sawada K, Honda K. Evaluation of effective dose from a RANDO phantom in videofluorography diagnostic procedures for diagnosing dysphagia. Dentomaxillofac Radiol 2011; 40:96-101. [PMID: 21239572 PMCID: PMC3520302 DOI: 10.1259/dmfr/51307488] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2009] [Revised: 12/25/2009] [Accepted: 01/04/2010] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES Videofluorography (VF) is useful for diagnosing dysphagia; however, few reports have investigated appropriate effective doses for VF. The present study aimed to estimate the effective radiation dose in VF for diagnosis of dysphagia. METHODS Radiation doses to tissues and organs were measured using the anthropomorphic RANDO woman phantom as an equivalent to the human body. Effective doses were estimated according to the recommendations of the International Commission on Radiological Protection (ICRP) 60 in 1990 and IRCP 103 in 2007. The tissues measured were those recommended by ICRP 60 and ICRP 103 including gonads (ovaries and testes), red bone marrow and tissues in which excessive radiation commonly causes malignant tumours including lung, thyroid gland, stomach, large intestine, liver, oesophagus, bladder, breast, bone marrow, skin, brain and salivary gland. Skin dose was also measured using thermoluminescent dosimeters. RESULTS Using ICRP 103, the effective dose was estimated as 118.1 μSv at a tube voltage of 50 kV and 82.4 μSv at 45 kV. However, using ICRP 60 the effective dose for 1 min of VF was estimated at 62.4 μSv and 47.2 μSv under the same exposure conditions. CONCLUSIONS Using ICRP 103, the effective dose for VF per examination at a total estimation time of 1 min was estimated as approximately 2.5-8.3 times that observed for digital panoramic radiography and 1/12 to 3 times depending on the measurement device for cone beam CT (CBCT). This value can be decreased in the future using a smaller irradiation field and decreased time for examination in VF in the future.
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Miura M, Takahashi N, Nara M, Fujishima N, Kagaya H, Kameoka Y, Saitoh H, Tagawa H, Sawada K. A simple, sensitive high-performance liquid chromatography -ultraviolet method for the quantification of concentration and steady-state pharmacokinetics of itraconazole and hydroxyitraconazole. Ann Clin Biochem 2010; 47:432-9. [DOI: 10.1258/acb.2010.010029] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Background A steady-state trough plasma itraconazole concentration greater than 500 ng/mL is a therapeutic target for itraconazole. A simple, rapid and sensitive high-performance liquid chromatography-based method was developed for quantitation of itraconazole and hydroxyitraconazole in human plasma. Methods Itraconazole and hydroxyitraconazole were separated using a mobile phase of 0.5% KH2PO4 (pH 6.0)-acetonitrile (30:70, v/v) on a CAPCELLPAK C18 MGII column at a flow rate of 0.5 mL/min and ultraviolet absorbance at 260 nm. Results The analysis required 200 μL of plasma and involved a rapid, simple solid-phase extraction with an Oasis HLB cartridge, which resulted in recoveries of 87–92% for itraconazole and 91–94% for hydroxyitraconazole. The lower limit of quantification for itraconazole and hydroxyitraconazole was 5 ng/mL each. Intra- and interday coefficients of variation for itraconazole and hydroxyitraconazole were less than 11.3% and 12.2%, respectively, and accuracies were within 11.7% and 4.5% over the linear range, respectively. Although the steady-state plasma concentrations of itraconazole and hydroxyitraconazole ranged from 506 to 2482 ng/mL and from 766 to 2444 ng/mL, respectively, after a two-day loading dose of 400 mg/day intravenous itraconazole followed by the administration of 200 mg/day itraconazole oral solution, calibration curves of itraconazole and hydroxyitraconazole showed positive linearity in a concentration range of 5–2500 and 50–2500 ng/mL, respectively. Conclusions Our results indicate that this method is applicable for the monitoring of plasma levels of itraconazole and hydroxyitraconazole in a clinical setting. Furthermore, the regimen presented here might also be effective in preventing infection, but further studies with large sample sizes are necessary to investigate this avenue.
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Sawada K, Sun XZ, Fukunishi K, Kashima M, Saito S, Sakata-Haga H, Sukamoto T, Aoki I, Fukui Y. Ontogenetic pattern of gyrification in fetuses of cynomolgus monkeys. Neuroscience 2010; 167:735-40. [DOI: 10.1016/j.neuroscience.2010.02.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Revised: 02/15/2010] [Accepted: 02/18/2010] [Indexed: 11/29/2022]
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Fujii K, Mizushiri K, Nishioka T, Shikama T, Iwamae A, Goto M, Morita S, Kado S, Sawada K, Hasuo M. Development of multiwavelength-range fine-resolution spectrometer for hydrogen emissions and its application to large helical device periphery plasmas. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2010; 81:033106. [PMID: 20370160 DOI: 10.1063/1.3356730] [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
We developed a spectrometer specialized for simultaneous observation of the hydrogen Balmer-alpha, -beta, -gamma lines and the Fulcher-alpha v(')=v(")=2 rovibronic transition band. The spectrometer was optimized for the light input coupled by nine optical fibers having 400 microm core diameters. The spectral resolutions were 0.02-0.03 nm for these wavelength ranges at the entrance slit width of 20 microm. The polarization resolved spectra of these emissions from the peripheral region of large helical device (LHD) plasmas were measured simultaneously and showed the polarization dependence coming from the magnetic field in the LHD plasma.
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Koyama S, Tomimatsu T, Kanagawa T, Sawada K, Tsutsui T, Kimura T, Chang YS, Wasada K, Imai S, Murata Y. Spinal subarachnoid hematoma following spinal anesthesia in a patient with HELLP syndrome. Int J Obstet Anesth 2009; 19:87-91. [PMID: 19945267 DOI: 10.1016/j.ijoa.2009.05.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2008] [Revised: 04/21/2009] [Accepted: 05/19/2009] [Indexed: 12/14/2022]
Abstract
A case of subarachnoid hematoma following spinal anesthesia for cesarean section in a patient with HELLP syndrome is reported. A 39-year-old woman underwent cesarean section under spinal anesthesia for worsening preeclampsia with HELLP syndrome. Despite full recovery from the spinal anesthetic, on the second postoperative day she felt numbness on the posterior aspect of her right leg, noticed she was insensitive to bladder fullness and had mild flaccid paraparesis. Magnetic resonance imaging revealed a spinal subarachnoid hematoma with cauda equina compression. With conservative management she made an almost complete recovery within three months. Serial magnetic resonance imaging showed spontaneous regression of the hematoma. The risk of spinal subarachnoid hematoma following obstetric regional anesthesia is exceedingly small even in a patient with coagulopathy and, to our knowledge, this is only the second reported case following obstetric regional anesthesia. Anesthesia for HELLP syndrome in patients with an adequate platelet count but without disseminated intravascular coagulation is controversial. It is therefore important for clinicians to recognize the symptoms and signs of spinal subarachnoid hematoma to avoid delay in treatment that might result in severe neurological deficit.
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Funaki K, Fukunishi H, Sawada K. Clinical outcomes of magnetic resonance-guided focused ultrasound surgery for uterine myomas: 24-month follow-up. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2009; 34:584-589. [PMID: 19852041 DOI: 10.1002/uog.7455] [Citation(s) in RCA: 139] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVES To assess the volume reduction ratio, symptom improvement and reintervention rate following magnetic resonance-guided focused ultrasound surgery (MRgFUS) for uterine myomas. METHODS A total of 91 Japanese women with symptomatic myomas underwent MRgFUS between June 2004 and June 2008 using the ExAblate 2000 system. The volume change ratio was calculated at 6, 12 and 24 months following MRgFUS based on T2-weighted magnetic resonance images. The symptom severity score (SSS) was examined before and after the treatment (at 3, 6, 12 and 24 months). Additional post-MRgFUS treatments, such as hysterectomy, myomectomy, uterine artery embolization or repeat MRgFUS, were recorded and the reinterventional treatment rates were compared according to the signal intensity of pretreatment T2-weighted magnetic resonance images of the myomas. RESULTS The mean volume change ratios of low- and intermediate-intensity (Type 1/2) myomas were -36.5% 6 months post-procedure and -39.5% 24 months post-procedure. The mean +/- SD SSS value for patients with Type 1/2 myomas before MRgFUS was 35.1 +/- 21.0, and the values diminished significantly during the 24-month follow-up period to a mean value of around 15.0. High-intensity (Type 3) myomas were not observed to have decreased in size 6 months after MRgFUS. Of the 45 Type 1/2 myoma patients with complete follow-up, seven required reinterventional treatment within 24 months. The reintervention rates were 14.0% for Type 1/2 patients and 21.6% for Type 3 patients at 24 months post-treatment. CONCLUSIONS Moderate volume reductions of Type 1/2 myomas were noted following MRgFUS, and the reduction in SSS values and the relatively low reintervention rates observed are encouraging. We found MRgFUS to be an appropriate treatment method for Type 1/2 uterine myomas.
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Komatsuda A, Wakui H, Iwamoto K, Sawada K. Up-regulated expression of suppressor of cytokine signalling (SOCS) proteins mRNAs in peripheral blood mononuclear cells from patients with systemic lupus erythematosus. Clin Exp Rheumatol 2009; 27:1060. [PMID: 20149336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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Fujisawa M, Sawada K. CLINICAL EFFICACY AND SAFETY OF SILDENAFIL IN ELDERLY PATIENTS WITH ERECTILE DYSFUNCTION. ACTA ACUST UNITED AC 2009; 50:255-60. [PMID: 15277003 DOI: 10.1080/01485010490448589] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Erectile dysfunction (ED) is a common medical disorder affecting elderly men. Sildenafil citrate has been shown to be an effective and well-tolerated oral agent for treating ED in the general population of adult men with ED of broad-spectrum etiology. Elderly men are more likely to have concomitant medical problems than the general population of men with ED. In this study, we examined the efficacy and safety of sildenafil administration in elderly patients with ED. Forty-four elderly men with ED (> or = 60 years old) of broad-spectrum etiology were treated with 25 mg or 50 mg doses of sildenafil citrate. Age ranged from 60 to 78 years (65 +/- 4.5; means +/- S.D.). Mean follow-up period was 12.3 +/- 6.5 months, with a range of 1 to 25 months. Primary efficacy assessments were performed using the International Index of Erectile Function 5 (IIEF5) before their first dose of sildenafil and after at least 4 weeks of therapy. Serum testosterone was measured before treatment. The mean IIEF5 among all patients increased from 8.5 +/- 3.9 to 20 +/- 4.2 after sildenafil use (P < 0.0001). In patients younger than 70 years, the IIEF5 score increased from 9.5 +/- 5.0 to 17 +/- 4.3 while in patients 70 years and older, the score increased from 8.2 +/- 3.6 to 21 +/- 3.9, a near normalization. The rate of improvement in younger men was higher than in older men. Serum testosterone before treatment was similar in the two groups. The most commonly experienced adverse events were flushing and dyspepsia, which occurred in 6.8% and 2.3%, respectively. No patients discontinued sildenafil treatment due to adverse events. In conclusion, oral sildenafil is efficacious and well tolerated by elderly men with ED, even among those older than 70 years.
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Maruyama Y, Terao S, Sawada K. Label free CMOS DNA image sensor based on the charge transfer technique. Biosens Bioelectron 2009; 24:3108-12. [DOI: 10.1016/j.bios.2009.03.031] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2008] [Revised: 03/08/2009] [Accepted: 03/26/2009] [Indexed: 11/28/2022]
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Nagai H, Kusumoto S, Sawada K, Yamaguchi M, Takayama N, Kinoshita T, Motoji T, Omachi K, Ogura M, Hotta T. Phase II study of cladribine with rituximab (R-2-CdA) therapy in patients with relapsed indolent B-cell non-Hodgkin's lymphoma. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e19501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e19501 Background: Although cladribine has been reported to be one of active purine analogs against indolent B-cell non-Hodgkin's lymphoma (B-NHL), there are few reports of combination usage of cladribine and rituximab. We conducted a multicenter phase II study to investigate efficacy and toxicity of cladribine with rituximab (R-2-CdA) therapy for relapsed indolent B-NHL. Methods: Eligibility criteria were as follows: relapsed pts with indolent B-NHL from systemic chemotherapy, ages less than 75 years; PS 0–2 by ECOG's scale. Patients received 0.09mg/kg of cladribine intravenously (2 hrs infusion) on days 1 to 5 and 375mg/m2 of rituximab intravenously on days 1 and 15, every 4 weeks, for a total of 4 cycles. Primary endpoint was overall response rate (ORR). Secondary endpoints were % complete response (%CR), 2 years progression free survival (2-y PFS), and 2 years overall survival (2-y OS). Results: A total of 20 out of 45 planned patients were enrolled and received R-2-CdA therapy from Apr 2005 to Jul 2007. Their median age was 58.5 (42–72), and the median number of prior regimens was 2 (1–3). Histologies included 16 follicular lymphomas, 2 MALT lymphomas, 1 nodal marginal B cell lymphoma, and 1 lymphoplasmacytic lymphoma. Fifteen pts (75%) were previously treated with rituximab. The ORR was 90% with 70% of % CR. Median PFS was 20.1 months (5.6–32.9 months) at a median follow-up time of 27 months. 2-y PFS and 2-y OS were 63.2% (95%CI, 28.1–67.8%), and 89.5% (95%CI, 69.8–97.2%), respectively. Severe neutropenia and thrombocytopenia of grade 3 or 4 were observed in 15% and 10% respectively. Conclusions: R-2CdA therapy was demonstrated to have high activity with durable PFS and acceptable toxicity in relapsed indolent B-NHL, even if patients were previously treated with rituximab. Although a large-scaled further trial remains to be needed, R-2-CdA therapy could be a good option of salvage therapy in relapsed indolent B-NHL. No significant financial relationships to disclose.
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Tskitishvili E, Tomimatsu T, Kanagawa T, Sawada K, Kinugasa Y, Mimura K, Kimura T. Amniotic fluid 'sludge' detected in patients with subchorionic hematoma: a report of two cases. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2009; 33:484-486. [PMID: 19308930 DOI: 10.1002/uog.6348] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Amniotic fluid 'sludge' is defined as the presence of dense aggregates of particulate matter in close proximity to the internal cervical os. It is of clinical significance in asymptomatic patients at high risk for spontaneous delivery, and in patients with preterm labor and intact membranes. Subchorionic hematoma is another ultrasound finding that is associated with a higher incidence of threatened miscarriage and preterm delivery. We report two cases of occurrence of amniotic fluid sludge in patients with previously detected large subchorionic hematoma. In the first case subchorionic hematoma and amniotic fluid sludge were detected by ultrasonography at 13 + 1 and 18 + 6 weeks' gestation, respectively, followed by preterm premature rupture of membranes, placental abruption and emergency Cesarean section. In the second case subchorionic hematoma and amniotic fluid sludge were detected by ultrasound at 11 + 3 and 15 + 5 weeks' gestation, respectively, followed by miscarriage with histological chorioamnionitis. The coincidence of subchorionic hematoma and amniotic fluid sludge in these cases points to a possible connection between these two significant ultrasound findings.
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Sawada K, Ishii F. Carrier-induced noncollinear magnetism in perovskite manganites by first-principles calculations. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2009; 21:064246. [PMID: 21715948 DOI: 10.1088/0953-8984/21/6/064246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We have performed noncollinear first-principles density-functional calculations of carrier-doped perovskite manganites La(1-x)Sr(x)MnO(3) (0.0≤x≤1.0). In the calculated magnetic phase diagram (T = 0) within the collinear magnetic configurations, ferromagnetic and several antiferromagnetic configurations successively appeared as a ground state with increasing x. The calculated total energies of the ferromagnetic and A-type antiferromagnetic phases are almost degenerate around the phase boundary, x = 0.5. We found that the noncollinear magnetic configurations are stable in a wide range of carrier concentrations 0.3≤x≤0.6. We discuss the effect of lattice distortions on the stability of the noncollinear magnetic phase.
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Ikeda T, Kanmura K, Kodama Y, Sawada K, Nunoi H, Hasegawa K. Segawa disease with a novel heterozygous mutation in exon 5 of the GCH-1 gene (E183K). Brain Dev 2009; 31:173-5. [PMID: 18621497 DOI: 10.1016/j.braindev.2008.05.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2007] [Revised: 05/27/2008] [Accepted: 05/31/2008] [Indexed: 11/19/2022]
Abstract
We report a novel missense mutation in the GCH-1 gene resulting in Segawa disease. The patient, a 6-year-old girl, presented with dystonia. Her CSF biopterin and neopterin levels were reduced, suggesting Segawa disease. L-dopa administration led to clinical improvement. Genetic analysis revealed a missense mutation in exon 5 of the GCH-1 gene (E183K). Although dystonia or other movement disorders were not identified in her family, this may be explained by the low penetrance of Segawa disease.
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Sawada K, Tokino S, Ueda M. Bioscouring of cotton with pectinase enzyme in a non-aqueous system. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1478-4408.1998.tb01937.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Komatsuda A, Wakui H, Iwamoto K, Ozawa M, Togashi M, Masai R, Maki N, Hatakeyama T, Sawada K. Up-regulated expression of Toll-like receptors mRNAs in peripheral blood mononuclear cells from patients with systemic lupus erythematosus. Clin Exp Immunol 2008; 152:482-7. [PMID: 18373699 DOI: 10.1111/j.1365-2249.2008.03646.x] [Citation(s) in RCA: 123] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Recent studies in animal models for systemic lupus erythematosus (SLE) have shown that Toll-like receptors (TLR-7 and TLR-9) and interferon (IFN)-alpha are involved in the pathogenesis of murine lupus. Recent studies using flow cytometry have also shown increased expression of TLR-9 in peripheral blood mononuclear cells (PBMCs) from SLE patients. In this study, we performed quantitative real-time reverse transcription-polymerase chain reaction analyses of PBMCs from 21 SLE patients and 21 healthy subjects, to estimate TLR2, TLR3, TLR4, TLR5, TLR7, TLR8, TLR9, IFN-alpha and LY6E (a type I IFN-inducible gene) mRNA expression levels. Expression levels of TLR2, TLR7, TLR9, IFN-alpha and LY6E mRNAs in SLE patients were significantly higher than those in healthy controls. Expression levels of TLR7 and TLR9 mRNAs correlated with that of IFN-alpha mRNA in SLE patients. These results suggest that up-regulated expression of TLR7 and TLR9 mRNAs together with increased expression of IFN-alpha mRNA in PBMCs may also contribute to the pathogenesis of human lupus.
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Hashimoto K, Kawashima S, Kameoka S, Akiyama Y, Honjoya T, Ejima K, Sawada K. Comparison of image validity between cone beam computed tomography for dental use and multidetector row helical computed tomography. Dentomaxillofac Radiol 2008; 36:465-71. [PMID: 18033942 DOI: 10.1259/dmfr/22818643] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To evaluate and compare the image validity of a cone beam CT machine for dental use (3DX) and the latest medical CT system, multidetector row helical CT (MDCT). METHODS A dried right maxilla of an Asian adult was used as a phantom. It was cut from the zygomatic process towards the midline, parallel to the midline plane, into eight slices of 2 mm thickness. This phantom was imaged with the 3DX and MDCT machines. Images were evaluated by comparing them with one selected bone slice from the phantom. In this comparison, two types of MDCT images were used: one with the window level (WL) and window width (WW) suitable for observing teeth (MDCT tooth image), and the other appropriate for observing bone (MDCT bone image). Three dentists and one radiographer then used our reported subjective five-level scale to evaluate and compare images generated by the two systems in terms of validity. Cancellous bone as well as enamel, dentin, pulp cavity, periodontal ligament space, lamina dura and overall impression were evaluated. RESULTS Statistically significant differences (P<0.05) were found for almost all observation items. Our subjective evaluation clarified that 3DX was superior to MDCT in terms of image validity. Few significant intra- or interevaluator errors were found. CONCLUSIONS Our subjective evaluation of image validity clarified 3DX as being superior to MDCT. Taken together with the low skin dose we previously reported for 3DX, the results demonstrate 3DX to be beneficial for imaging diagnosis of hard tissues in the maxillofacial region.
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