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Morita K, Maeda N, Kawaoka T, Hiraki S, Kudo A, Fukuda S, Oka M. Effects of the time interval between clamping and linear stapling for resection of porcine small intestine. Surg Endosc 2008; 22:750-6. [PMID: 17694412 DOI: 10.1007/s00464-007-9481-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Although a wait of several seconds after clamping is recommended when an automatic stapler is used to achieve adequate hemostasis, this wait has not been experimentally clarified. METHODS To determine whether waiting is necessary between clamping and firing of a linear stapler, this study evaluated the number of staple line bleeding points and histologic changes in stapling sites of porcine small intestine (n = 46). It also assessed the ratio of dry to wet tissue weight (DW ratio) (n = 20) of porcine small intestine clamped between the prongs of a linear stapler. The sites were studied separately as follows: no wait with a four-row device (n = 12), no wait with a six-row device (n = 11), wait with a four-row device (n = 12), and wait with a six-row device (n = 11). The linear stapler was fired immediately after clamping in the no wait group and 1 min after clamping in the wait group. RESULTS The mean number of staple line bleeding points in 2 to 5 min with the six-row device and in 3 to 5 min with the four-row device after firing were significantly less in the wait group than in the no wait group using the same device (p < 0.05). Cross sections of staple lines showed a higher frequency of mucosal cutting in the no wait group than in the wait group for both the four-row and the six-row devices (both significant at p < 0.01). Although the mean wet tissue weights of anastomotic sites did not change in either group, the mean DW ratio was significantly less in the wait group than in the no wait group (p < 0.01). CONCLUSIONS A 1-min interval after clamping decreases the amount of clamped tissue. Waiting may thus be necessary to reduce bleeding from stapling sites, which may be related to a decrease in mucosal cutting.
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Hojo K, Nagaoka S, Murata S, Taketomo N, Ohshima T, Maeda N. Reduction of vitamin K concentration by salivary Bifidobacterium strains and their possible nutritional competition with Porphyromonas gingivalis. J Appl Microbiol 2008; 103:1969-74. [PMID: 17953607 DOI: 10.1111/j.1365-2672.2007.03436.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIMS To assess the possibility that bifidobacteria compete with Porphyromonas gingivalis for their mutual growth factor vitamin K. This study also examined whether salivary Bifidobacterium species decrease vitamin K concentration in the growth medium. METHODS AND RESULTS Sixty-five strains of Bifidobacterium were obtained from 20 of 24 periodontally healthy subjects. Bifidobacterium dentium was most frequently detected in the saliva of subjects, followed by Bifidobacterium adolescentis, Bifidobacterium longum, and Bifidobacterium urinalis. The growth of most Bifidobacterium isolates, except that of B. urinalis, was stimulated by vitamin K. Moreover, the isolates were capable of decreasing vitamin K after incubation, which suggests that bifidobacteria compete with P. gingivalis for vitamin K. In a co-culture, a representative strain -B. adolescentis S2-1 - inhibited the growth of P. gingivalis if it was inoculated in the medium before P. gingivalis. CONCLUSIONS B. adolescentis S2-1 decreased vitamin K concentration and inhibited the growth of P. gingivalis by possibly competing for the growth factor. SIGNIFICANCE AND IMPACT OF THE STUDY Salivary bifidobacteria may possess the potential to suppress the growth of P. gingivalis by reducing the growth factor(s) in the environment.
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Saito T, Nishida K, Sugiyama H, Yamato M, Maeda N, Okano T, Tano Y. Abnormal keratocytes and stromal inflammation in chronic phase of severe ocular surface diseases with stem cell deficiency. Br J Ophthalmol 2008; 92:404-10. [DOI: 10.1136/bjo.2007.127738] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Mikoshiba K, Furuichi T, Miyawaki A, Yoshikawa S, Maeda N, Niinobe M, Nakade S, Nakagawa T, Okano H, Aruga J. The inositol 1,4,5-trisphosphate receptor. CIBA FOUNDATION SYMPOSIUM 2007; 164:17-29; discussion 29-35. [PMID: 1327678 DOI: 10.1002/9780470514207.ch3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Inositol 1,4,5-trisphosphate (InsP3) is a second messenger that releases Ca2+ from its intracellular stores. The InsP3 receptor has been purified and its cDNA has been cloned. We have found that the InsP3 receptor is identical to P400 protein, first identified as a protein enriched in cerebellar Purkinje cells. We have generated an L-fibroblast cell transfectant that produces cDNA-derived InsP3 receptors. The protein displays high affinity and specificity for InsP3. InsP3 induces greater Ca2+ release from membrane vesicles from transfected cells than from those from control L-fibroblasts. After incorporation of the purified InsP3 receptor into lipid bilayers InsP3-induced Ca2+ currents were demonstrated. These results suggest that the InsP3 receptor is involved in physiological Ca2+ release. Immunogold labelling using monoclonal antibodies against the receptor showed that it is highly concentrated on the smooth-surfaced endoplasmic reticulum and slightly on the outer nuclear membrane and rough endoplasmic reticulum; no labelling of Golgi apparatus, mitochondria and plasmalemma was seen. Cross-linking experiments showed that the receptor forms a homotetramer. The approximately 650 N-terminal amino acids are highly conserved between mouse and Drosophila, and this region contains the critical sequences for InsP3 binding. We have investigated the heterogeneity of the InsP3 receptor using the polymerase chain reaction and have found novel subtypes of the mouse InsP3 receptor that are expressed in a tissue-specific and developmentally specific manner.
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Maeda S, Sawayama Y, Maeda N, Ohnishi H, Shigemastu M, Furusyo N, Hayashi J. PO19-590 THE BAPWV FOR PREDICTING THE FIVE-YEAR SURVIVAL OF MAINTENANCE HEMODIALYSIS PATIENTS IN JAPAN. ATHEROSCLEROSIS SUPP 2007. [DOI: 10.1016/s1567-5688(07)71600-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ikushima I, Ohta H, Hirai T, Yokogami K, Miyahara D, Maeda N, Yamashita Y. Balloon catheter disruption of middle cerebral artery thrombus in conjunction with thrombolysis for the treatment of acute middle cerebral artery embolism. AJNR Am J Neuroradiol 2007; 28:513-7. [PMID: 17353326 PMCID: PMC7977835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
BACKGROUND AND PURPOSE The goal of this study was to prospectively assess the feasibility, safety, and efficacy of balloon disruption of the middle cerebral artery (MCA) by using a deflated balloon catheter combined with an intra-arterial thrombolysis for the treatment of acute ischemic stroke. MATERIALS AND METHODS Seven consecutive patients with clinical findings of acute major-vessel stroke met our criteria and underwent balloon disruption of an MCA thrombus with a deflated balloon catheter. The balloon disruption was performed with a low-profile microballoon catheter. The microballoon was inflated in the distal carotid artery and then deflated and advanced just distal to the occlusion site in the MCA. Thereafter, an intra-arterial thrombolysis of the MCA was applied. The maximum time from the onset of symptoms to the start of treatment and maximum dosage of urokinase was 6 hours and 600,000 U. The outcome was classified as good for a modified Rankin Scale (mRS) score of 0 or 1, moderate for a score of 2 or 3, and poor for a score of 4 or 5. RESULTS Complete recanalization was achieved in 5 patients and partial recanalization in 3. Three patients recovered to an mRS score of 0 or 1; 3, to scores of 2 or 3; and 1, to a score of 4. No patients died. There was no major intracerebral hemorrhage. CONCLUSIONS The penetration of the MCA with a deflated balloon catheter combined with an intra-arterial thrombolysis may be a safe and effective treatment for acute ischemic stroke.
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Miskad UA, Semba S, Kato H, Matsukawa Y, Kodama Y, Mizuuchi E, Maeda N, Yanagihara K, Yokozaki H. High PRL-3 expression in human gastric cancer is a marker of metastasis and grades of malignancies: an in situ hybridization study. Virchows Arch 2007; 450:303-10. [PMID: 17235563 DOI: 10.1007/s00428-006-0361-8] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2006] [Revised: 11/26/2006] [Accepted: 12/19/2006] [Indexed: 12/29/2022]
Abstract
Phosphatase of regenerating liver (PRL)-3, encoding a 22-kD low molecular weight tyrosine phosphatase, has been reported to be associated with metastasis of colorectal carcinoma. We assessed the levels of PRL-3 mRNA expression to know whether its up-regulation was involved in progression and metastasis of gastric carcinoma. Levels of PRL-3 expression in 94 human gastric adenocarcinomas and 54 matched lymph node metastases were detected by in situ hybridization and compared with clinicopathological characteristics including prognosis. High PRL-3 expression was detected in 36.2% of primary gastric carcinoma (with nodal metastasis, 55.6%; without nodal metastasis, 10%; P < 0.001) and in 74.1% of lymph node metastases. The incidence of high PRL-3 expression in lymph node metastasis was significantly higher than in primary tumors (P < 0.044). Moreover, high expression of PRL-3 was closely associated with tumor size, lymphatic invasion, venous invasion, extent of lymph node metastasis, and tumor stage. These results suggest that high PRL-3 expression may participate in the progression and metastasis of gastric carcinoma. PRL-3 might be a novel molecular marker for aggressive gastric cancer.
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Funahashi T, Nagasawa A, Hibuse T, Maeda N. Impact of glycerol gateway molecule in adipocytes. Cell Mol Biol (Noisy-le-grand) 2006; 52:40-5. [PMID: 17543220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2006] [Accepted: 02/02/2006] [Indexed: 05/15/2023]
Abstract
Glycerol is one of the essential nutrients in the mammalian body. Glycerol released from adipocytes is delivered to the liver and used for gluconeogenesis. The molecular mechanism of glycerol transport across the cell membrane remains unclear. AQPadipose, which we identified in human adipose cDNA project and later found to be human AQP7, is expressed in adipose tissue, and upregulated during fasting. AQP7 belongs to the aquaglyceroporin subfamily to permealize glycerol as well as water. Loss of function mutation of AQP7 in human caused disturbance of normal rise of plasma glycerol. Disruption of AQP7 gene in mice resulted in profound hypoglycemia during prolonged fasting because of impaired glycerol supply to the liver. In obesity, AQP7 is overexpressed in visceral fat,accompanied by portal hyperglycerolemia and systemic hyperglycemia. Considered together, these works indicate that AQP7 functions as a glycerol gateway molecule in adipocytes.
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Komatsu J, Koyama H, Maeda N, Aratani Y. Earlier onset of neutrophil-mediated inflammation in the ultraviolet-exposed skin of mice deficient in myeloperoxidase and NADPH oxidase. Inflamm Res 2006; 55:200-6. [PMID: 16830107 DOI: 10.1007/s00011-006-0071-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE AND DESIGN This study examined the role of neutrophil-derived reactive oxygen species (ROS) in neutrophil recruitment into ultraviolet B (UVB)-exposed skin of mice. METHODS Mouse dorsal skin was irradiated with UVB (600 mJ/cm2). Accumulation of neutrophils within the inflammatory sites was observed histochemically. Keratinocyte-derived chemokine (KC) and macrophage inflammatory protein 2 (MIP-2) were quantified, and in vivo chemotaxis of neutrophils toward KC and MIP-2 was examined. RESULTS UVB exposure of mice deficient in myeloperoxidase (MPO), NADPH oxidase, or both, caused skin neutrophil infiltration peaking at 60, 48, and 48 h, respectively, which was earlier than the 72-h peak in wild-type mice. MIP-2 level was higher in mutant than wild-type mice. Mutant neutrophils produced more MIP-2 in vitro. Neutrophil migration toward a localized source of KC was higher in mutant than wild type mice. NADPH oxidase deficiency had a greater effect on migration than MPO deficiency. CONCLUSIONS These results suggest that ROS produced by neutrophils regulate expression of MIP-2 and migration of neutrophils toward KC. This may explain the earlier infiltration of mutant neutrophils in response to UVB.
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Kurata A, Nishizawa H, Kihara S, Maeda N, Sonoda M, Okada T, Ohashi K, Hibuse T, Fujita K, Yasui A, Hiuge A, Kumada M, Kuriyama H, Shimomura I, Funahashi T. Blockade of Angiotensin II type-1 receptor reduces oxidative stress in adipose tissue and ameliorates adipocytokine dysregulation. Kidney Int 2006; 70:1717-24. [PMID: 16985520 DOI: 10.1038/sj.ki.5001810] [Citation(s) in RCA: 132] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Dysregulated production of adipocytokines may be involved in the development of atherosclerotic cardiovascular disease in metabolic syndrome and chronic kidney disease (CKD) associated with metabolic syndrome. The aim of this study was to determine the effects of treatment with angiotensin II (Ang II) type-1 receptor blocker (ARB) on the regulation of adipocytokines. Olmesartan, an ARB, significantly blunted the age- and body weight-associated falls in plasma adiponectin both in genetically and diet-induced obese mice, without affecting body weight, but had no effect on plasma adiponectin levels in lean mice. Olmesartan also ameliorated dysregulation of adipocytokines in obesity, such as tumor necrosis factor-alpha, plasminogen activator inhibitor-1, monocyte chemotactic protein-1, and serum amyloid A3. Olmesartan significantly reduced reactive oxygen species originating from accumulated fat and attenuated the expression of nicotinamide adenine dinucleotide phospho hydrogenase oxidase subunits in adipose tissue. In cultured adipocytes, olmesartan acted as an antioxidant and improved adipocytokine dysregulation. Our results indicate that blockade of Ang II receptor ameliorates adipocytokine dysregulation and that such action is mediated, at least in part, by targeting oxidative stress in obese adipose tissue. Ang II signaling and subsequent oxidative stress in adipose tissue may be potential targets for the prevention of atherosclerotic cardiovascular disease in metabolic syndrome and also in metabolic syndrome-based CKD.
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Maeda N, Yoshimi K, Tachibana H, Yamada K. Soy-Derived Immunoglobulin Production Stimulating Factor Enhances IgM Production of Mouse Spleen Lymphocytes. J Food Sci 2006. [DOI: 10.1111/j.1750-3841.2006.00131.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Mineyama R, Yoshino S, Maeda N. DNA fingerprinting of isolates of Streptococcus mutans by pulsed-field gel electrophoresis. Microbiol Res 2006; 162:244-9. [PMID: 16870412 DOI: 10.1016/j.micres.2006.06.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2006] [Revised: 03/19/2006] [Accepted: 06/09/2006] [Indexed: 11/28/2022]
Abstract
Forty isolates and five standard laboratory strains, representing serotypes c, e and f of Streptococcus mutans were analyzed by pulsed-field gel electrophoresis (PFGE) after digestion of the genomic DNA with BssH II. The digestion patterns of standard laboratory strains were characteristic of serotypes c, e and f. Serotypes c and f generated diagnostic DNA fragments of approximately 145 kbp and of approximately 130-175 kbp in length, respectively. Serotype e generated a ladder of at least 14 fragments of 15-155 kbp in length. The digestion patterns of isolates were essentially similar to those of the standard laboratory strains. The patterns of almost all isolates obtained from a single individual were identical, but patterns of a few different types were also observed among isolates obtained from two individuals. Digestion with BssH II revealed differences among isolates obtained from different individuals. We used differences in banding patterns among isolates to construct a dendrogram. The dendrogram included two major clusters, one that consisted of isolates of serotypes c and f, and an other that consisted of isolates of serotype e. Our results indicate that BssH II is a useful enzyme for distinguishing among isolates of S. mutans and that digestion patterns obtained by PFGE can be used for chromosomal DNA fingerprinting.
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Maeda N, Hayashizaki Y. Genome-wide survey of imprinted genes. Cytogenet Genome Res 2006; 113:144-52. [PMID: 16575174 DOI: 10.1159/000090826] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2005] [Accepted: 09/15/2005] [Indexed: 01/06/2023] Open
Abstract
The developmental failure of mammalian parthenogenote has been a mystery for a long time and posed a question as to why bi-parental reproduction is necessary for development to term. In the 1980s, it was proven that this failure was not due to the genetic information itself, but to epigenetic modification of genomic DNA. In the following decade, several studies successfully identified imprinted genes which were differentially expressed in a parent-of-origin-specific manner, and it was shown that the differential expression depended on the pattern of DNA methylation. These facts prompted development of genome-wide systematic screening methods based on DNA methylation and differential gene expression to identify imprinted genes. Recently computational approaches and microarray technology have been introduced to identify imprinted genes/loci, contributing to the expansion of our knowledge. However, it has been shown that the gene silencing derived from genomic imprinting is accomplished by several mechanisms in addition to direct DNA methylation, indicating that novel approaches are further required for comprehensive understanding of genomic imprinting. To unveil the mechanism of developmental failure in mammalian parthenogenote, systematic screenings for imprinted genes/loci have been developed. In this review, we describe genomic imprinting focusing on the history of genome-wide screening.
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Abstract
Oral candidiasis (OC) is the most common mucosal manifestation of HIV infection. This workshop examined OC and other mycoses associated with HIV infection. Historically, blood CD4 cell numbers were the primary prognosticator for the development of OC. However, a study that statistically evaluated the predictive role of HIV viral load vs. CD4 cell counts revealed viral load to be a stronger predictor for OC. The role of biofilms and antifungal resistance in recalcitrant OC is unclear at present. In general, micro-organisms including yeasts in biofilms are more resistant to antifungals than their planktonic counterparts. When the remaining organisms are eliminated, the few resistant organisms may not be problematic, because they are present in low numbers. Unusual exotic mycoses in HIV-infected patients are more common in patients from the developing than the developed world. These infections may be recurrent and recalcitrant to therapy, be present in multiple and uncommon sites, increase with the progression of HIV disease, and may play a role similar to that of the more common mycoses. Typing and subtyping of yeasts are probably not critical to the clinical management of candidiasis caused by Candida albicans and non-albicans strains, including C. dubliniensis, because it is responsive to antifungal therapy. C. glabrata is probably the only exception. The presence of oral thrush in infants younger than 6 months of age is associated with an increased post-natal transmission risk of HIV infection. Thus, perinatal retroviral therapy should be combined with the treatment of oral thrush to prevent the post-natal acquisition of HIV.
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Ueno S, Kurome M, Tomii R, Hiruma K, Maeda N, Saito H, Nagashima H. 185 EMBRYONIC LOSS IN PIGS ASSOCIATED WITH OVIDUCT TRANSPLANTATION OF EARLY-STAGE EMBRYOS WITH DAMAGES IN THE ZONA PELLUCIDA. Reprod Fertil Dev 2006. [DOI: 10.1071/rdv18n2ab185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
It is assumed that if porcine early-stage embryos with damages in their zonae pellucidae are transplanted to the recipient's oviduct, they may suffer from mechanical and immunological stresses by oviduct contraction and the recipient's immune response. This study aimed to examine the impact of zona pellucida damages, which might arise during nuclear transfer and intra cytoplasmic sperm injection (ICSI), on the development and survival of transplanted embryos. Cumulus-oocyte complexes were collected from ovaries obtained at a local slaughterhouse and matured in vitro in NCSU23 to prepare MII-stage oocytes. The zonae pellucidae of these oocytes were either penetrated with 8- to 10-�m square-ended microinjection pipettes or incised with 35- to 40-�m beveled enucleation pipettes. Intact oocytes were used as controls. The oocytes were electroactivated to induce parthenogenesis and transplanted to the oviducts of estrus-synchronized recipient gilts (estrus-synchronized with 1000 IU eCG and 1500 IU hCG). After 5 to 7 days, the recipient uteri were flushed with PBS supplemented with 1% fetal bovine serum (FBS) to collect embryos, and their development (morula-blastocyst stage embryos/collected embryos) and survival (viable embryos/collected embryos) were determined. In total, 221 zona-penetrated, 129 zona-incised, and 57 intact embryos were transplanted to four, two and two gilts, respectively. The efficiency of embryo recovery was similar in all groups (59.0 to 81.8%). However, the zona-penetrated and zona-incised embryos showed inconsistent development and survival compared with controls; the development and survival rate were 92.6% (25/27) to 96.7% (29/30) and 77.8% (21/27) to 96.7% (29/30) in control embryos, respectively, whereas those of zona-penetrated embryos were 57.1% (28/49) to 95.7% (22/23) and 8.2% (4/49) to 78.3% (18/30), and those of zona-incised embryos were 47.6% (30/63) to 92.3% (36/39) and 23.8% (15/63) to 92.3% (22/23), respectively. Large foci of cells that appeared to be macrophage giant cells were observed at the surface or inside of the degenerated zona-damaged embryos. These results indicate that the recipient's immune response may impair development after transplantation of the embryo to the oviduct, when there is damage in the zona pellucida. This may be one of the factors attributable to the reduced efficiency of live progeny production by ICSI and nuclear transfer.
This work was supported by PROBRAIN.
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Hiruma K, Ueda H, Saito H, Tanaka C, Maeda N, Kurome M, Tomii R, Ueno S, Nagashima H. 98 SUCCESSFUL PREGNANCIES FOLLOWING TRANSFER OF VITRIFIED PORCINE EMBRYOS DERIVED FROM IN VITRO-MATURED OOCYTES. Reprod Fertil Dev 2006. [DOI: 10.1071/rdv18n2ab98] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
To date only in vivo-produced embryos have successfully produced live piglets after cryopreservation. In this study, we aimed to produce piglets from vitrified embryos derived from in vitro matured (IVM) oocytes. Cumulus-oocyte complexes collected from ovaries obtained at a local slaughterhouse were matured for 44 to 45 h in NCSU23 MEDIUM supplemented with 0.6 mM cysteine, 10 ng/mL epidermal growth factor, 10% (v/v) porcine follicular fluid, 75 �g/mL potassium penicillin G, 50 �g/mL streptomycin sulfate, and 10 IU/mL eCG/ hCG. These IVM oocytes were either activated for parthenogenesis or in vitro-fertilized (IVF). For IVF, oocytes were incubated with 5 � 106/mL of cryopreserved epididymal sperm in PGM-tac medium (Yoshioka et al. 2003 Biol. Reprod. 69, 2092-2099) for 20 h. Embryos were treated for removal of cytoplasmic lipid droplets (delipation; Nagashima et al. 1995 Nature 374, 416) at the 4- to 8-cell stages, around 50 to 54 h after activation or insemination. After culture in NCSU23 for 15 h, they were vitrified by the minimum volume cooling (MVC) method. Embryos were equilibrated with equilibration solution containing 7.5% (v/v) ethylene glycol (EG), 7.5% (v/v) dimethylsulfoxide (DMSO), and 20% (v/v) calf serum for 4 min, followed by exposure to vitrification solution containing 15% EG, 15% DMSO, 0.5 M sucrose, and 20% calf serum. Embryos were then loaded onto a Cryotop (Kitazato Supply Co., Tokyo, Japan) and immediately plunged into liquid nitrogen. Vitrified embryos were examined for viability in vitro and in vivo after warming. Their in vitro developmental competence was compared to that of corresponding control (nonvitrified) embryos. Vitrified 4- to 8-cell stage embryos, both parthenogenetic and IVF, showed developmental competence into blastocysts comparable to that of control embryos (parthenogenetic: 46.8%, 36/77 vs. 51.7%, 31/60; IVF: 40.0%, 30/75 vs. 44.3%, 35/79). Of four surrogate gilts that received a total of 251 vitrified parthenogenetic embryos, three became pregnant and had 20 fetuses (8.0%, 22 to 23 days old). Three surrogates gilts that received 267 vitrified IVF embryos all became pregnant. Of those, the one that received 47 embryos was confirmed to have eight fetuses (17.0%, 22 days old) by autopsy. The other two were examined by ultrasonography at 56 and 95 days of gestation and found to be pregnant. These results suggest that porcine embryos derived from IVM oocytes have a potential to develop into live offspring after delipation and MVC vitrification.
This study was supported by PROBRAIN.
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Sawayama Y, Tatsukawa M, Kikuchi K, Okada K, Maeda N, Hayashi J. Th-P16:369 Effect on carotid atherosclerosis of levofloxacin plus probucol for chlamydia pneumoniae infection. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)82327-5] [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]
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Maeda S, Sawayama Y, Maeda N, Oonishi H, Okada K, Shigematsu M, Furusyo N, Hayashi J. Mo-P1:60 An association between the risk factors of carotid atherosclerosis and the fatal events of patients undergoing maintenance hemodialysis. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)80195-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Carninci P, Kasukawa T, Katayama S, Gough J, Frith MC, Maeda N, Oyama R, Ravasi T, Lenhard B, Wells C, Kodzius R, Shimokawa K, Bajic VB, Brenner SE, Batalov S, Forrest ARR, Zavolan M, Davis MJ, Wilming LG, Aidinis V, Allen JE, Ambesi-Impiombato A, Apweiler R, Aturaliya RN, Bailey TL, Bansal M, Baxter L, Beisel KW, Bersano T, Bono H, Chalk AM, Chiu KP, Choudhary V, Christoffels A, Clutterbuck DR, Crowe ML, Dalla E, Dalrymple BP, de Bono B, Della Gatta G, di Bernardo D, Down T, Engstrom P, Fagiolini M, Faulkner G, Fletcher CF, Fukushima T, Furuno M, Futaki S, Gariboldi M, Georgii-Hemming P, Gingeras TR, Gojobori T, Green RE, Gustincich S, Harbers M, Hayashi Y, Hensch TK, Hirokawa N, Hill D, Huminiecki L, Iacono M, Ikeo K, Iwama A, Ishikawa T, Jakt M, Kanapin A, Katoh M, Kawasawa Y, Kelso J, Kitamura H, Kitano H, Kollias G, Krishnan SPT, Kruger A, Kummerfeld SK, Kurochkin IV, Lareau LF, Lazarevic D, Lipovich L, Liu J, Liuni S, McWilliam S, Madan Babu M, Madera M, Marchionni L, Matsuda H, Matsuzawa S, Miki H, Mignone F, Miyake S, Morris K, Mottagui-Tabar S, Mulder N, Nakano N, Nakauchi H, Ng P, Nilsson R, Nishiguchi S, Nishikawa S, Nori F, Ohara O, Okazaki Y, Orlando V, Pang KC, Pavan WJ, Pavesi G, Pesole G, Petrovsky N, Piazza S, Reed J, Reid JF, Ring BZ, Ringwald M, Rost B, Ruan Y, Salzberg SL, Sandelin A, Schneider C, Schönbach C, Sekiguchi K, Semple CAM, Seno S, Sessa L, Sheng Y, Shibata Y, Shimada H, Shimada K, Silva D, Sinclair B, Sperling S, Stupka E, Sugiura K, Sultana R, Takenaka Y, Taki K, Tammoja K, Tan SL, Tang S, Taylor MS, Tegner J, Teichmann SA, Ueda HR, van Nimwegen E, Verardo R, Wei CL, Yagi K, Yamanishi H, Zabarovsky E, Zhu S, Zimmer A, Hide W, Bult C, Grimmond SM, Teasdale RD, Liu ET, Brusic V, Quackenbush J, Wahlestedt C, Mattick JS, Hume DA, Kai C, Sasaki D, Tomaru Y, Fukuda S, Kanamori-Katayama M, Suzuki M, Aoki J, Arakawa T, Iida J, Imamura K, Itoh M, Kato T, Kawaji H, Kawagashira N, Kawashima T, Kojima M, Kondo S, Konno H, Nakano K, Ninomiya N, Nishio T, Okada M, Plessy C, Shibata K, Shiraki T, Suzuki S, Tagami M, Waki K, Watahiki A, Okamura-Oho Y, Suzuki H, Kawai J, Hayashizaki Y. The transcriptional landscape of the mammalian genome. Science 2005; 309:1559-63. [PMID: 16141072 DOI: 10.1126/science.1112014] [Citation(s) in RCA: 2636] [Impact Index Per Article: 138.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This study describes comprehensive polling of transcription start and termination sites and analysis of previously unidentified full-length complementary DNAs derived from the mouse genome. We identify the 5' and 3' boundaries of 181,047 transcripts with extensive variation in transcripts arising from alternative promoter usage, splicing, and polyadenylation. There are 16,247 new mouse protein-coding transcripts, including 5154 encoding previously unidentified proteins. Genomic mapping of the transcriptome reveals transcriptional forests, with overlapping transcription on both strands, separated by deserts in which few transcripts are observed. The data provide a comprehensive platform for the comparative analysis of mammalian transcriptional regulation in differentiation and development.
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95
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Xiao H, Heeringa P, Liu Z, Huugen D, Hu P, Maeda N, Falk RJ, Jennette JC. Injection of ANCA—No Neutrophils, No Glomerular Damage. J Am Soc Nephrol 2005; 16:2521-2527. [PMID: 37000906 DOI: 10.1681/01.asn.0000926740.18373.6b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
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96
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Hirai H, Matsubayashi K, Kumazaki K, Kato A, Maeda N, Kim HS. Chimpanzee chromosomes: retrotransposable compound repeat DNA organization (RCRO) and its influence on meiotic prophase and crossing-over. Cytogenet Genome Res 2005; 108:248-54. [PMID: 15545737 DOI: 10.1159/000080823] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2003] [Accepted: 11/12/2003] [Indexed: 11/19/2022] Open
Abstract
The terminal C-bands that are a specific feature of chimpanzee chromosomes were dissected using a molecular cytogenetic technique, PRINS, with primers for telomeric sequences, subterminal satellite, and retrotransposable elements (HERV-K and -W). These DNA elements jointly formed a large block of retrotransposable compound repeat DNA organization (RCRO) at the terminal C-band regions of 30 chromosomes, and are also located at the centromeric regions of some chromosomes. Additionally, a block consisting of all members of the RCRO has transposed to the middle (q31.1) of the long arm of chromosome 6, and three members, the subterminal satellite and the two HERVs, have integrated into the proximal region (q14.4) of the long arm of chromosome 14. Terminal RCROs seem to induce and prolong the bouquet stage in meiotic prophase, and to affect chiasma formation, together with interstitial RCROs. It is also postulated that RCROs may cause a position effect to gene expression, resulting in gene silencing and/or late replication.
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97
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Takikawa H, Onji M, Takamori Y, Murata Y, Taniguchi H, Ito T, Watanabe M, Ayada M, Maeda N, Nomoto M, Murata H, Ohmori S, Hisamochi A, Sumida T. Proposal of diagnostic criteria of drug induced hepatic injury in DDW-J2004 workshop. ACTA ACUST UNITED AC 2005. [DOI: 10.2957/kanzo.46.85] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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98
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Onji M, Takikawa H, Murata Y, Kojima Y, Hashimoto N, Hisamochi A, Sumida T, Omori S, Murata H, Watanabe M, Taniguchi H, Maeda N, Kumagi T, Kang JH, Ito T, Aono R, Ayada M. Investigation of drug-induced hepatopathy by folk medicine and by health food. ACTA ACUST UNITED AC 2005. [DOI: 10.2957/kanzo.46.142] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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99
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Shinohara T, Nakamura R, Suzuki M, Maeda N. Extensor mechanism laxity at the metacarpophalangeal joint as identified by a new provocative test: predisposition to dislocation. JOURNAL OF HAND SURGERY (EDINBURGH, SCOTLAND) 2004; 30:79-82. [PMID: 15620497 DOI: 10.1016/j.jhsb.2004.09.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2004] [Accepted: 09/07/2004] [Indexed: 11/28/2022]
Abstract
A tendon subluxation test was performed on the unaffected side in 13 patients with traumatic extensor tendon dislocation of the middle finger and on both middle fingers in 800 healthy controls to identify extensor mechanism laxity at the metacarpophalangeal joint. Ten of the 13 patients with dislocation had laxity of middle finger extensor tendon, compared with 174 of the 800 (22%) controls. The difference in these rates of extensor tendon laxity is significant (P<0.0001), and suggests that extensor mechanism laxity at the metacarpophalangeal joint may predispose to traumatic extensor tendon dislocation.
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100
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Oguri H, Izumiya C, Maeda N, Fukaya T, Moriki T. A primary amelanotic melanoma of the vagina, diagnosed by immunohistochemical staining with HMB-45, which recurred as a pigmented melanoma. J Clin Pathol 2004; 57:986-8. [PMID: 15333663 PMCID: PMC1770413 DOI: 10.1136/jcp.2004.016220] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Usually, malignant melanoma is readily diagnosed by the presence of melanin granules. Although amelanotic melanoma contains a few melanin granules, it is often difficult to differentiate from non-epithelial malignant tumours. This report describes a case of amelanotic melanoma of the vagina, which was originally suspected to be a non-epithelial malignant tumour, but was subsequently correctly diagnosed by immunohistochemical staining with the HMB-45 antibody and for the S-100 protein. A light grey tumour with superficial ulceration was located in the upper third of the vagina. The patient was treated with irradiation followed by chemotherapy. Subsequently, the tumour disappeared and cytology was negative; thus, she achieved complete remission. However, 20 months after complete remission, the tumour recurred locally: the site had a grossly black appearance, which was pathognomonic for a malignant melanoma. Thus, HMB-45 and S-100 protein immunohistochemistry confirmed the diagnosis of amelanotic melanoma.
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