1
|
Ohsuga T, Egawa M, Takahashi Y, Ikeda Y, Tsuyuki K, Kanatani K, Niwa F, Hirabayashi K, Nakayama T, Mandai M. Association between low MCV in early pregnancy and perinatal mental health in the Japan Environment and Children's Study and the possible effect of iron deficiency. J Affect Disord 2024; 356:34-40. [PMID: 38583601 DOI: 10.1016/j.jad.2024.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 03/29/2024] [Accepted: 04/03/2024] [Indexed: 04/09/2024]
Abstract
BACKGROUND Postpartum anemia and iron deficiency are associated with postpartum depression. This study investigated the association between a low mean corpuscular volume (MCV) without anemia (which implies early-stage iron deficiency) in early pregnancy and perinatal mental health outcomes. METHODS The fixed data from the Japan Environment and Children's Study (JECS), a Japanese nationwide birth cohort, were used. Perinatal mental health was assessed using the Kessler 6-item psychological distress scale (K6) in mid-pregnancy and the Edinburgh Postnatal Depression Scale (EPDS) at 1- and 6-months postpartum. RESULTS Among the 3635 women with MCVs <85 fL in early pregnancy, the proportions of women with K6 scores ≥13 in mid-pregnancy and EPDS scores ≥9 at 1- and 6-months postpartum were 2.7 %, 12.8 %, and 9.9 %, respectively, compared with the 33,242 women with MCVs ≥85 fL at 1.9 %, 11.9 %, and 9.0 %, respectively. Multivariate logistic regression models showed that an MCV <85 in early pregnancy was associated with a K6 score ≥ 13 in mid-pregnancy and an EPDS score ≥ 9 at 1- and 6-months postpartum (adjusted odds ratio (95 % confidence interval): 1.48 (1.16-1.87), 1.14 (1.01-1.28), and 1.09 (0.95-1.24), respectively). LIMITATIONS Low MCV values do not necessarily represent iron deficiency. Ferritin, currently the best indicator of iron deficiency, was not measured in the JECS. CONCLUSIONS This study results suggest that a low MCV without anemia in early pregnancy is associated with a slightly increased risk of perinatal mental health deterioration.
Collapse
Affiliation(s)
- T Ohsuga
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan; Department of Health Informatics, Kyoto University School of Public Health, Kyoto, Japan
| | - M Egawa
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Y Takahashi
- Department of Health Informatics, Kyoto University School of Public Health, Kyoto, Japan.
| | - Y Ikeda
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan; Department of Health Informatics, Kyoto University School of Public Health, Kyoto, Japan
| | - K Tsuyuki
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - K Kanatani
- Kyoto Unit Centre for Japan Environment and Children's Study, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - F Niwa
- Kyoto Unit Centre for Japan Environment and Children's Study, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - K Hirabayashi
- Kyoto Unit Centre for Japan Environment and Children's Study, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - T Nakayama
- Department of Health Informatics, Kyoto University School of Public Health, Kyoto, Japan; Kyoto Unit Centre for Japan Environment and Children's Study, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - M Mandai
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| |
Collapse
|
2
|
Hirabayashi K, Debnath SC, Owens GL. Unveiling the evolutionary history of lingonberry (Vaccinium vitis-idaea L.) through genome sequencing and assembly of European and North American subspecies. G3 (Bethesda) 2024; 14:jkad294. [PMID: 38142435 PMCID: PMC10917501 DOI: 10.1093/g3journal/jkad294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 10/23/2023] [Accepted: 12/18/2023] [Indexed: 12/26/2023]
Abstract
Lingonberry (Vaccinium vitis-idaea L.) produces tiny red berries that are tart and nutty in flavor. It grows widely in the circumpolar region, including Scandinavia, northern parts of Eurasia, Alaska, and Canada. Although cultivation is currently limited, the plant has a long history of cultural use among indigenous communities. Given its potential as a food source, genomic resources for lingonberry are significantly lacking. To advance genomic knowledge, the genomes for 2 subspecies of lingonberry (V. vitis-idaea ssp. minus and ssp. vitis-idaea var. 'Red Candy') were sequenced and de novo assembled into contig-level assemblies. The assemblies were scaffolded using the bilberry genome (Vaccinium myrtillus) to generate a chromosome-anchored reference genome consisting of 12 chromosomes each with a total length of 548.07 Mb [contig N50 = 1.17 Mb, BUSCO (C%) = 96.5%] for ssp. vitis-idaea and 518.70 Mb [contig N50 = 1.40 Mb, BUSCO (C%) = 96.9%] for ssp. minus. RNA-seq-based gene annotation identified 27,243 and 25,718 genes on the respective assembly, and transposable element detection methods found that 45.82 and 44.58% of the genome were repeats. Phylogenetic analysis confirmed that lingonberry was most closely related to bilberry and was more closely related to blueberries than cranberries. Estimates of past effective population size suggested a continuous decline over the past 1-3 MYA, possibly due to the impacts of repeated glacial cycles during the Pleistocene leading to frequent population fragmentation. The genomic resource created in this study can be used to identify industry-relevant genes (e.g. anthocyanin production), infer phylogeny, and call sequence-level variants (e.g. SNPs) in future research.
Collapse
Affiliation(s)
- Kaede Hirabayashi
- Department of Biology, University of Victoria, 3800 Finnerty Road, Victoria, BC V8W 2Y2, Canada
| | - Samir C Debnath
- Agriculture and Agri-Food Canada, St.John's Research and Development Centre, 204 Brookfield Road, St. John’s, Newfoundland and Labrador L A1E 0B2, Canada
| | - Gregory L Owens
- Department of Biology, University of Victoria, 3800 Finnerty Road, Victoria, BC V8W 2Y2, Canada
| |
Collapse
|
3
|
Bock DG, Cai Z, Elphinstone C, González-Segovia E, Hirabayashi K, Huang K, Keais GL, Kim A, Owens GL, Rieseberg LH. Genomics of plant speciation. Plant Commun 2023; 4:100599. [PMID: 37050879 PMCID: PMC10504567 DOI: 10.1016/j.xplc.2023.100599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/21/2023] [Accepted: 04/06/2023] [Indexed: 06/19/2023]
Abstract
Studies of plants have been instrumental for revealing how new species originate. For several decades, botanical research has complemented and, in some cases, challenged concepts on speciation developed via the study of other organisms while also revealing additional ways in which species can form. Now, the ability to sequence genomes at an unprecedented pace and scale has allowed biologists to settle decades-long debates and tackle other emerging challenges in speciation research. Here, we review these recent genome-enabled developments in plant speciation. We discuss complications related to identification of reproductive isolation (RI) loci using analyses of the landscape of genomic divergence and highlight the important role that structural variants have in speciation, as increasingly revealed by new sequencing technologies. Further, we review how genomics has advanced what we know of some routes to new species formation, like hybridization or whole-genome duplication, while casting doubt on others, like population bottlenecks and genetic drift. While genomics can fast-track identification of genes and mutations that confer RI, we emphasize that follow-up molecular and field experiments remain critical. Nonetheless, genomics has clarified the outsized role of ancient variants rather than new mutations, particularly early during speciation. We conclude by highlighting promising avenues of future study. These include expanding what we know so far about the role of epigenetic and structural changes during speciation, broadening the scope and taxonomic breadth of plant speciation genomics studies, and synthesizing information from extensive genomic data that have already been generated by the plant speciation community.
Collapse
Affiliation(s)
- Dan G Bock
- Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, Canada
| | - Zhe Cai
- Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, Canada
| | - Cassandra Elphinstone
- Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, Canada
| | - Eric González-Segovia
- Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, Canada
| | | | - Kaichi Huang
- Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, Canada
| | - Graeme L Keais
- Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, Canada
| | - Amy Kim
- Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, Canada
| | - Gregory L Owens
- Department of Biology, University of Victoria, Victoria, BC, Canada
| | - Loren H Rieseberg
- Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, Canada.
| |
Collapse
|
4
|
Hirabayashi K, Owens GL. The rate of chromosomal inversion fixation in plant genomes is highly variable. Evolution 2023; 77:1117-1130. [PMID: 36790048 DOI: 10.1093/evolut/qpad027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 01/20/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023]
Abstract
Chromosomal inversions are theorized to play an important role in adaptation by preventing recombination, but testing this hypothesis requires an understanding of the rate of inversion fixation. Here we use chromosome-level whole genome assemblies for 32 genera of plants to ask how fast inversions accumulate and what factors affect this rate. We find that on average species accumulate 4 to 25 inversions per million generations, but this rate is highly variable, and we find no correlation between sequence divergence or repeat content and the number of inversions or the proportion of genome that was inverted and only a small correlation with chromosome size. We also find that inversion regions are depleted for genes and enriched for TEs compared to the genomic background. This suggests that idiosyncratic forces, like natural selection and demography, are controlling how fast inversions fix.
Collapse
Affiliation(s)
| | - Gregory L Owens
- Department of Biology, University of Victoria, Victoria, BC, Canada
| |
Collapse
|
5
|
Hirabayashi K, Murch SJ, Erland LAE. Predicted impacts of climate change on wild and commercial berry habitats will have food security, conservation and agricultural implications. Sci Total Environ 2022; 845:157341. [PMID: 35842164 DOI: 10.1016/j.scitotenv.2022.157341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 07/07/2022] [Accepted: 07/09/2022] [Indexed: 06/15/2023]
Abstract
Climate change is now a reality and is altering ecosystems, with Canada experiencing 2-4 times the global average rate of warming. This will have a critical impact on berry cultivation and horticulture. Enhancing our understanding of how wild and cultivated berries will perform under changing climates will be essential to mitigating impacts on ecosystems, culture and food security. Our objective was to predict the impact of climate change on habitat suitability of four berry producing Vaccinium species: two species with primarily northern distributions (V. uliginosum, V. vitis-idaea), one species with a primarily southern distribution (V. oxycoccos), and the commercially cultivated V. macrocarpon. We used the maximum entropy (Maxent) model and the CMIP6 shared socioeconomic pathways (SSPs) 126 and 585 projected to 2041-2060 and 2061-2080. Wild species showed a uniform northward progression and expansion of suitable habitat. Our modeling predicts that suitable growing regions for commercial cranberries are also likely to shift with some farms becoming unsuitable for the current varieties and other regions becoming more suitable for cranberry farms. Both V. macrocarpon and V. oxycoccos showed a high dependence on precipitation-associated variables. Vaccinium vitis-idaea and V. uliginosum had a greater number of variables with smaller contributions which may improve their resilience to individual climactic events. Future competition between commercial cranberry farms and wild berries in protected areas could lead to conflicts between agriculture and conservation priorities. New varieties of commercial berries are required to maintain current commercial berry farms.
Collapse
Affiliation(s)
- Kaede Hirabayashi
- Chemistry, University of British Columbia, Okanagan, Kelowna, BC V1V 1V7, Canada; Department of Biology, University of Victoria, Victoria, BC V8W 2Y2, Canada
| | - Susan J Murch
- Chemistry, University of British Columbia, Okanagan, Kelowna, BC V1V 1V7, Canada
| | - Lauren A E Erland
- Chemistry, University of British Columbia, Okanagan, Kelowna, BC V1V 1V7, Canada; Agriculture, University of the Fraser Valley, Chilliwack, BC, V2R 0N9, Canada.
| |
Collapse
|
6
|
Miyakawa T, Onaya H, Hirabayashi K, Shirakawa H, Tomikawa M, Ozawa I, Hishinuma S, Ogata Y. Hepatocyte transporter expression in liver metastasis: not correlated with the signal intensity pattern on the hepatobiliary phase of gadoxetic acid enhanced magnetic resonance images. Eur J Surg Oncol 2019. [DOI: 10.1016/j.ejso.2018.10.445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
7
|
Watanabe T, Takahashi Y, Hirabayashi K, Tomaru U, Machida M. Acute fulminant myocarditis in a patient with primary Sjögren's syndrome. Scand J Rheumatol 2018; 48:164-165. [PMID: 30516409 DOI: 10.1080/03009742.2018.1514068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- T Watanabe
- a Department of Internal Medicine , Tomakomai City Hospital , Tomakomai , Japan
| | - Y Takahashi
- b Department of Cardiology , Tomakomai City Hospital , Tomakomai , Japan
| | - K Hirabayashi
- b Department of Cardiology , Tomakomai City Hospital , Tomakomai , Japan
| | - U Tomaru
- c Department of Pathology , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - M Machida
- b Department of Cardiology , Tomakomai City Hospital , Tomakomai , Japan
| |
Collapse
|
8
|
Nohara C, Ohtake T, Hirabayashi K, Arii K, Kobayashi M, Okamura M, Fujita S, Takubo H. Retrospective study of percutaneous endoscopic gastrostomy in neurodegenerative disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
9
|
Yokota N, Miyakoshi T, Sato Y, Nakasone Y, Yamashita K, Imai T, Hirabayashi K, Koike H, Yamauchi K, Aizawa T. Predictive models for conversion of prediabetes to diabetes. J Diabetes Complications 2017; 31:1266-1271. [PMID: 28173983 DOI: 10.1016/j.jdiacomp.2017.01.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/01/2017] [Accepted: 01/13/2017] [Indexed: 11/20/2022]
Abstract
AIM To clarify the natural course of prediabetes and develop predictive models for conversion to diabetes. METHODS A retrospective longitudinal study of 2105 adults with prediabetes was carried out with a mean observation period of 4.7years. Models were developed using multivariate logistic regression analysis and verified by 10-fold cross-validation. The relationship between [final BMI minus baseline BMI] (δBMI) and incident diabetes was analyzed post hoc by comparing the diabetes conversion rate for low (< -0.31kg/m2) and high δBMI (≥ -0.31kg/m2) subjects after matching the two groups for the covariates. RESULTS Diabetes developed in 252 (2.5%/year), and positive family history, male sex, higher systolic blood pressure, plasma glucose (fasting and 1h- and 2h-values during 75g OGTT), hemoglobin A1c (HbA1c) and alanine aminotransferase were significant, independent predictors for the conversion. By using a risk score (RS) that took account of all these variables, incident diabetes was predicted with an area under the ROC curve (95% CI) of 0.80 (0.70-0.87) and a specificity of prediction of 61.8% at 80% sensitivity. On division of the participants into high- (n=248), intermediate- (n=336) and low-risk (n=1521) populations, the conversion rates were 40.1%, 18.5% and 5.9%, respectively. The conversion rate was lower in subjects with low than high δBMI (9.2% vs 14.4%, p=0.003). CONCLUSIONS Prediabetes conversion to diabetes could be predicted with accuracy, and weight reduction during the observation was associated with lowered conversion rate.
Collapse
Affiliation(s)
- N Yokota
- Diabetes Center, Aizawa Hospital, Matsumoto, 390-8510, Japan
| | - T Miyakoshi
- Diabetes Center, Aizawa Hospital, Matsumoto, 390-8510, Japan
| | - Y Sato
- Diabetes Center, Aizawa Hospital, Matsumoto, 390-8510, Japan
| | - Y Nakasone
- Department of Medicine, Kamiichi General Hospital, Kamiichi 930-0391, Japan
| | - K Yamashita
- Diabetes Center, Aizawa Hospital, Matsumoto, 390-8510, Japan
| | - T Imai
- Health Center, Okaya City Hospital, Okaya, 394-8512, Japan
| | - K Hirabayashi
- Health Center, Aizawa Hospital, Matsumoto, 390-8510, Japan
| | - H Koike
- Health Center, Aizawa Hospital, Matsumoto, 390-8510, Japan
| | - K Yamauchi
- Diabetes Center, Shinonoi General Hospital, 388-8004, Japan
| | - T Aizawa
- Diabetes Center, Aizawa Hospital, Matsumoto, 390-8510, Japan.
| |
Collapse
|
10
|
Hoshimoto S, Hishinuma S, Shirakawa H, Tomikawa M, Ozawa I, Wakamatsu S, Hoshi S, Hoshi N, Hirabayashi K, Ogata Y. Reassessment of the clinical significance of portal-superior mesenteric vein invasion in borderline resectable pancreatic cancer. Eur J Surg Oncol 2017; 43:1068-1075. [PMID: 28427822 DOI: 10.1016/j.ejso.2017.03.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 03/21/2017] [Accepted: 03/29/2017] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE The principal objective of this study is to clarify the prognostic significance of borderline resectable pancreatic cancer (BRPC). The second objective is to evaluate the prognostic impact of the depth of pathological venous invasion. METHODS The study included 122 pancreatic cancer patients who underwent curative surgery. All computed tomography scans of the patients were retrospectively interpreted and classified according to the NCCN guidelines, version 1.2016, as resectable (-) or borderline resectable (+) in each arterial (BR-A) and venous (BR-PV) involvement. RESULTS The overall survival (OS) rate was significantly higher in BR-A(-) patients (n = 94) than in BR-A(+) patients (n = 28) (P = 0.001), whereas there was no difference between BR-PV(-) (n = 101) and BR-PV(+) patients (n = 21) (P = 0.257). In a multivariate analysis, the independent predictors of OS included BR-A(+) (P = 0.002), lymph node metastasis (P = 0.008), pathological venous invasion (P = 0.003), and adjuvant chemotherapy (P = 0.001). Of 39 patients who underwent venous resection, no significant difference was observed between BR-PV(-) (n = 20) and BR-PV(+) patients (n = 19) in resection rate, lymph node metastasis, the presence of extrapancreatic nerve invasion, recurrence rate, frequency of initial recurrence at a liver or local site, and OS. Pathological venous invasion was significantly deeper in BR-PV(+) patients. However, the depth of invasion was not associated with OS. CONCLUSION The definition of venous involvement in the current guidelines predicted the depth of pathological venous invasion but not OS in BRPC patients. Further prospective, randomized studies are needed to establish treatment strategies for BRPC patients with isolated venous involvement.
Collapse
Affiliation(s)
- S Hoshimoto
- Department of Hepato-Biliary-Pancreatic Surgery, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan.
| | - S Hishinuma
- Department of Hepato-Biliary-Pancreatic Surgery, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan.
| | - H Shirakawa
- Department of Hepato-Biliary-Pancreatic Surgery, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan.
| | - M Tomikawa
- Department of Hepato-Biliary-Pancreatic Surgery, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan.
| | - I Ozawa
- Department of Hepato-Biliary-Pancreatic Surgery, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan.
| | - S Wakamatsu
- Department of Pathology, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan.
| | - S Hoshi
- Department of Pathology, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan.
| | - N Hoshi
- Department of Pathology, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan.
| | - K Hirabayashi
- Department of Pathology, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan.
| | - Y Ogata
- Department of Hepato-Biliary-Pancreatic Surgery, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan.
| |
Collapse
|
11
|
Morita D, Hirabayashi K, Katsuyama Y, Morokawa H, Motobayashi M, Kurata T, Shigemura T, Tanaka M, Inaba Y, Koike K, Nakazawa Y. Viral load and ganciclovir (GCV) concentration in cerebrospinal fluid of patients successfully treated with GCV or valGCV for human herpesvirus 6 encephalitis/myelitis following umbilical cord blood transplantation. Transpl Infect Dis 2016; 18:773-776. [PMID: 27459097 DOI: 10.1111/tid.12579] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 03/23/2016] [Accepted: 05/10/2016] [Indexed: 11/26/2022]
Abstract
We describe successful treatment of 3 cases of human herpesvirus 6 (HHV-6) encephalitis/myelitis following cord blood transplantation (CBT). Ganciclovir (GCV) (10 mg/kg/day) reduced HHV-6 load to undetectable levels in cerebrospinal fluid (CSF). Early dose reduction in the presence of HHV-6 detectable in CSF resulted in an increased HHV-6 load. GCV was capably shifted to valganciclovir (VGCV) with an almost equivalent concentration. GCV/VGCV may be effective for HHV-6 encephalitis/myelitis after CBT, although HHV-6 load in CSF should be monitored.
Collapse
Affiliation(s)
- D Morita
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - K Hirabayashi
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Katsuyama
- Department of Pharmacy, Shinshu University Hospital, Matsumoto, Japan
| | - H Morokawa
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - M Motobayashi
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - T Kurata
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - T Shigemura
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - M Tanaka
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Inaba
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - K Koike
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Nakazawa
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan.
| |
Collapse
|
12
|
Murata M, Hasegawa K, Kanazawa I, Shirakura K, Kochi K, Shimazu R, Kimura T, Yoshida K, Abe T, Kurita K, Yoshizawa K, Tamaoka A, Nakano I, Shimizu T, Hattori N, Mizusawa H, Kuno S, Yokochi F, Hirabayashi K, Horiuchi E, Kawashima N, Koike R, Ishikawa A, Kuriyama M, Mizoguchi K, Mitake S, Washimi Y, Tatsuoka Y, Fujimura H, Toda K, Kondo T, Nakashima K, Nomoto M, Uozumi T, Sato A, Matsuo H, Tsuruta K. Randomized placebo‐controlled trial of zonisamide in patients with Parkinson's disease. ACTA ACUST UNITED AC 2015. [DOI: 10.1111/ncn3.12026] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Miho Murata
- Department of Neurology National Center Hospital National Center of Neurology and Psychiatry Tokyo Japan
| | - Kazuko Hasegawa
- Department of Neurology Sagamihara National Hospital SagamiharaTokyo Japan
| | - Ichiro Kanazawa
- International University of Health and Welfare Graduate School Tokyo Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Sakashita K, Kato I, Daifu T, Saida S, Hiramatsu H, Nishinaka Y, Ebihara Y, Ma F, Matsuda K, Saito S, Hirabayashi K, Kurata T, Uyen LTN, Nakazawa Y, Tsuji K, Heike T, Nakahata T, Koike K. In vitro expansion of CD34(+)CD38(-) cells under stimulation with hematopoietic growth factors on AGM-S3 cells in juvenile myelomonocytic leukemia. Leukemia 2015; 29:606-14. [PMID: 25102944 DOI: 10.1038/leu.2014.239] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 07/09/2013] [Accepted: 07/24/2014] [Indexed: 12/11/2022]
Abstract
Using serum-containing culture, we examined whether AGM-S3 stromal cells, alone or in combination with hematopoietic growth factor(s), stimulated the proliferation of CD34(+) cells from patients with juvenile myelomonocytic leukemia (JMML). AGM-S3 cells in concert with stem cell factor plus thrombopoietin increased the numbers of peripheral blood CD34(+) cells to approximately 20-fold of the input value after 2 weeks in nine JMML patients with either PTPN11 mutations or RAS mutations, who received allogeneic hematopoietic transplantation. Granulocyte-macrophage colony-stimulating factor (GM-CSF) also augmented the proliferation of JMML CD34(+) cells on AGM-S3 cells. The expansion potential of CD34(+) cells was markedly low in four patients who achieved spontaneous hematological improvement. A large proportion of day-14-cultured CD34(+) cells were negative for CD38 and cryopreservable. Cultured JMML CD34(+)CD38(-) cells expressed CD117, CD116, c-mpl, CD123, CD90, but not CXCR4, and formed GM and erythroid colonies. Day-7-cultured CD34(+) cells from two of three JMML patients injected intrafemorally into immunodeficient mice stimulated with human GM-CSF after transplantation displayed significant hematopoietic reconstitution. The abilities of OP9 cells and MS-5 cells were one-third and one-tenth, respectively, of the value obtained with AGM-S3 cells. Our culture system may provide a useful tool for elucidating leukemogenesis and for therapeutic approaches in JMML.
Collapse
MESH Headings
- ADP-ribosyl Cyclase 1/genetics
- ADP-ribosyl Cyclase 1/metabolism
- Adolescent
- Animals
- Antigens, CD34/genetics
- Antigens, CD34/metabolism
- Cell Proliferation/drug effects
- Clone Cells
- Coculture Techniques
- Embryonic Stem Cells/drug effects
- Embryonic Stem Cells/metabolism
- Embryonic Stem Cells/pathology
- GTP Phosphohydrolases/genetics
- GTP Phosphohydrolases/metabolism
- Gene Expression Regulation, Leukemic
- Granulocyte-Macrophage Colony-Stimulating Factor/pharmacology
- Hematopoietic Stem Cells/drug effects
- Hematopoietic Stem Cells/metabolism
- Hematopoietic Stem Cells/pathology
- Humans
- Leukemia, Myelomonocytic, Juvenile/genetics
- Leukemia, Myelomonocytic, Juvenile/metabolism
- Leukemia, Myelomonocytic, Juvenile/pathology
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Mice
- Mice, Inbred NOD
- Mice, SCID
- Mutation
- Neoplastic Stem Cells/metabolism
- Neoplastic Stem Cells/pathology
- Neoplastic Stem Cells/transplantation
- Protein Tyrosine Phosphatase, Non-Receptor Type 11/genetics
- Protein Tyrosine Phosphatase, Non-Receptor Type 11/metabolism
- Proto-Oncogene Proteins/genetics
- Proto-Oncogene Proteins/metabolism
- Proto-Oncogene Proteins p21(ras)
- Signal Transduction
- Stromal Cells/drug effects
- Stromal Cells/metabolism
- Stromal Cells/pathology
- ras Proteins/genetics
- ras Proteins/metabolism
Collapse
Affiliation(s)
- K Sakashita
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - I Kato
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - T Daifu
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - S Saida
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - H Hiramatsu
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Y Nishinaka
- Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Y Ebihara
- 1] Department of Pediatric Hematology/Oncology, Research Hospital, Institute of Medical Science, University of Tokyo, Minato-ku, Japan [2] Division of Stem Cell Processing, Center for Stem Cell Biology and Regenerative Medicine, Institute of Medical Science, University of Tokyo, Minato-ku, Japan
| | - F Ma
- 1] Division of Stem Cell Processing, Center for Stem Cell Biology and Regenerative Medicine, Institute of Medical Science, University of Tokyo, Minato-ku, Japan [2] Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Chengdu, China
| | - K Matsuda
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - S Saito
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - K Hirabayashi
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - T Kurata
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - L T N Uyen
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Nakazawa
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - K Tsuji
- 1] Department of Pediatric Hematology/Oncology, Research Hospital, Institute of Medical Science, University of Tokyo, Minato-ku, Japan [2] Division of Stem Cell Processing, Center for Stem Cell Biology and Regenerative Medicine, Institute of Medical Science, University of Tokyo, Minato-ku, Japan [3] Department of Pediatrics, Shinshu Ueda Medical Center, National Hospital Organization, Ueda, Japan
| | - T Heike
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - T Nakahata
- Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - K Koike
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| |
Collapse
|
14
|
Yoshikawa K, Nakazawa Y, Katsuyama Y, Hirabayashi K, Saito S, Shigemura T, Tanaka M, Yanagisawa R, Sakashita K, Koike K. Safety, tolerability, and feasibility of antifungal prophylaxis with micafungin at 2 mg/kg daily in pediatric patients undergoing allogeneic hematopoietic stem cell transplantation. Infection 2014; 42:639-47. [DOI: 10.1007/s15010-014-0601-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Accepted: 02/10/2014] [Indexed: 11/28/2022]
|
15
|
Matsuda K, Nakazawa Y, Iwashita C, Kurata T, Hirabayashi K, Saito S, Tanaka M, Yoshikawa K, Yanagisawa R, Sakashita K, Sasaki S, Honda T, Koike K. Myeloid progenitors with PTPN11 and nonRAS pathway gene mutations are refractory to treatment with 6-mercaptopurine in juvenile myelomonocytic leukemia. Leukemia 2014; 28:1545-8. [PMID: 24496301 DOI: 10.1038/leu.2014.58] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- K Matsuda
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Y Nakazawa
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - C Iwashita
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - T Kurata
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - K Hirabayashi
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - S Saito
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - M Tanaka
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - K Yoshikawa
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - R Yanagisawa
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - K Sakashita
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - S Sasaki
- Department of Pediatrics, Hirosaki University School of Medicine, Hirosaki, Japan
| | - T Honda
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - K Koike
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| |
Collapse
|
16
|
Hirabayashi K, Nakazawa Y, Katsuyama Y, Yanagisawa T, Saito S, Yoshikawa K, Shigemura T, Sakashita K, Ichikawa M, Koike K. Successful ganciclovir therapy in a patient with human herpesvirus-6 encephalitis after unrelated cord blood transplantation: usefulness of longitudinal measurements of viral load in cerebrospinal fluid. Infection 2012; 41:219-23. [DOI: 10.1007/s15010-012-0329-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 08/28/2012] [Indexed: 11/28/2022]
|
17
|
Hirabayashi K, Takahashi Y, Fukuyama K, Wada K. Structural basis of the protein–protein interactions among ISC proteins involved in de novoFe–S cluster biosynthesis. Acta Crystallogr A 2012. [DOI: 10.1107/s0108767312097206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
18
|
Hirabayashi K, Zamboni G. IgG4-related disease. Pathologica 2012; 104:43-55. [PMID: 22953500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
IgG4-related disease (IgG4-RD) is considered a fibro-inflammatory condition with a marked propensity to form mass forming lesions, characterized by a dense lymphoplasmacytic infiltrate, the presence of abundant IgG4+ plasma cells, frequent elevation of serum IgG4 and a dramatic initial response to glucocorticoid. Nowadays, IgG4-RD has been described in almost every organ system: the pancreatobiliary tract, liver, salivary glands, nasopharynx, bone marrow, lacrimal gland, extra-ocular muscles and retrobulbar space, kidneys, lungs, lymph nodes, meninges, aorta and arteries, skin, breast, prostate, thyroid gland and pericardium. Although the common diagnostic features of all these regional involvements cannot be defined with certainty, and slight differences have been noted in different organs, many histopathological features are shared. Consensus has not yet been reached regarding criteria that have to be fulfilled for a new IgG4-RD. The proposed criteria include appropriate clinical and histopathological findings, presence of abundant tissue-infiltrating IgG4+ plasma cells, high serum IgG4 concentrations, response to steroid therapy, other autoimmune diseases or other organ involvement. The two hallmark features for diagnosis are histopathological characteristics and the presence of infiltrating IgG4+ plasma cells. In this review, we will focus on the histopathological features of IgG4-RD in specific organs and discuss the relationship with inflammatory pseudotumour and malignancy, IgG4 counting methods, and diagnosis using biopsy specimens. IgG4-related disease (IgG4-RD) is a multi-organ system disease that has been recognized in the last 10 years. IgG4-RD has a marked propensity to present as mass-forming lesions. The two hallmark features for diagnosis are histopathological characteristics and the presence of infiltrating IgG4+ plasma cells. Correct identification is crucial to avoid unnecessary major surgical procedures and initiate corticosteroid therapy.
Collapse
Affiliation(s)
- K Hirabayashi
- Department of Pathology, Ospedale Sacro Cuore Don Calabria, Negrar (VR), Italy.
| | | |
Collapse
|
19
|
Fukuyama K, Kameda H, Hirabayashi K, Wada K. Mapping of protein-protein interaction sites in the plant-type [2Fe-2S] ferredoxin. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311079864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
20
|
Hirabayashi K, Takahashi Y, Fukuyama K, Wada K. Crystallographic analyses of the ISC proteins involved in de novoFe-S cluster biogenesis. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311079852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
21
|
Chiba K, Fujimura Y, Toyama Y, Takahata T, Nakanishi T, Hirabayashi K. Anterior screw fixation for odontoid fracture: clinical results in 45 cases. Eur Spine J 2010; 2:76-81. [PMID: 20058455 DOI: 10.1007/bf00302707] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Clinical results of anterior screw fixation in 45 patients with odontoid fractures were reviewed retrospectively. The patients were 36 males and 9 females, with fractures classified as 35 type II and 10 type III. There were 34 fresh and 11 old fractures. Neurological complications were present in 16 patients and 18 had associated injuries. All patients underwent single screw fixation. Postoperative immobilization, external support, and surgical trauma were minimal. In one patient a screw extruded from the dens and immediate posterior fusion was necessary. The overall rate of fracture union was 93% (41 out of 44 fractures). Fracture resolution averaged 5.2 months. There were two delayed unions and three nonunions, the causes of which were preoperatively established nonunion, severe osteoporosis, and inaccurate screw placement. Out of 11 old cases, 8 went on to union. Ninety-six percent of the patients recovered neurologically. The overall complication rate, including a misplaced screw, a retropharyngeal wall injury, and three nonunions, was 11%. Head rotation was preserved in 90% of the patients with fracture union according to clinical measurements. Anterior screw fixation is an excellent treatment for fresh type II and cephalad type III odontoid fractures, carrying a high union rate, preservation of the C1-2 motion segment, and minimal surgical trauma; it can be applied even to some old cases. Precise patient selection in regard to patient age, bone density, and time elapsed since injury as well as preoperative anatomical reduction and meticulous surgical technique with fine fluoroscopy are essential to avoid complications and nonunions.
Collapse
Affiliation(s)
- K Chiba
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan
| | | | | | | | | | | |
Collapse
|
22
|
Miyasaka M, Tanaka R, Hirabayashi K, Yamazaki A, Shinohara H, Taira H, Akamatsu T. Primary mucinous carcinoma of the skin: a case of metastasis after 10 years of disease-free interval. Eur J Plast Surg 2008; 32:189-193. [PMID: 20234869 PMCID: PMC2837212 DOI: 10.1007/s00238-008-0304-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2008] [Accepted: 10/14/2008] [Indexed: 11/24/2022]
Abstract
Primary mucinous carcinoma of the skin (MCS) is a rare neoplasm. Clinically, it has a high local recurrence rate, but it is known to be a slow-growing benign tumor with a rare incidence of distant metastases. We present a case of primary MCS on the jaw that underwent tumor resection twice and was disease-free for 10 years after the second surgery. The patient had no evidence of local recurrence and distant metastasis until his 11th year follow-up. At that time, he was diagnosed with lung and bone metastasis and died 3 years after this. To our knowledge, this is the first case of MCS that presented with metastasis with more than 10-year disease-free interval. Since MCS is a slow-growing asymptomatic tumor, distant metastasis is difficult to diagnose without detailed radiological examination. We believe that computed tomography and resonance imaging should be performed for early diagnosis of metastasis even for cases with long-term disease-free interval, especially cases of local recurrence.
Collapse
Affiliation(s)
- M. Miyasaka
- Department of Plastic and Reconstructive Surgery, School of Medicine, Tokai University, 143 Shimokasuya Isehara-shi, Hiratsuka, Kanagawa 259-1193 Japan
| | - R. Tanaka
- Department of Plastic and Reconstructive Surgery, School of Medicine, Tokai University, 143 Shimokasuya Isehara-shi, Hiratsuka, Kanagawa 259-1193 Japan
| | - K. Hirabayashi
- Department of Pathology, School of Medicine, Tokai University, Hiratsuka, Kanagawa Japan
| | - A. Yamazaki
- Department of Plastic and Reconstructive Surgery, School of Medicine, Tokai University, 143 Shimokasuya Isehara-shi, Hiratsuka, Kanagawa 259-1193 Japan
| | - H. Shinohara
- Department of Plastic and Reconstructive Surgery, School of Medicine, Tokai University, 143 Shimokasuya Isehara-shi, Hiratsuka, Kanagawa 259-1193 Japan
| | - H. Taira
- Department of Plastic and Reconstructive Surgery, School of Medicine, Tokai University, 143 Shimokasuya Isehara-shi, Hiratsuka, Kanagawa 259-1193 Japan
| | - T. Akamatsu
- Department of Plastic and Reconstructive Surgery, School of Medicine, Tokai University, 143 Shimokasuya Isehara-shi, Hiratsuka, Kanagawa 259-1193 Japan
| |
Collapse
|
23
|
Kobayashi N, Hirabayashi K, Matsui T, Hirahara Y, Kurihara H, Igarashi S, Ishikawa T, Sekiguchi R. Depressed-type colon cancer in a patient with diverticulosis. Endoscopy 2008; 40 Suppl 2:E44. [PMID: 18300202 DOI: 10.1055/s-2007-966854] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- N Kobayashi
- Department of Diagnostic Imaging, Tochigi Cancer Center, Tochigi, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Kobayashi N, Ishikawa T, Hirabayashi K, Fu KI, Hirahara Y, Yamabe Y, Igarashi S, Sekiguchi R. Education and imaging. Gastrointestinal: intramucosal gastric cancer treated by endoscopic submucosal dissection. J Gastroenterol Hepatol 2008; 23:500. [PMID: 18318828 DOI: 10.1111/j.1440-1746.2008.05337.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- N Kobayashi
- Department of Diagnostic Imaging, Tochigi Cancer Center, Tochigi, Japan
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Fu K, Ishikawa T, Igarashi S, Tsuura Y, Hirabayashi K, Kaji Y. Mucin-secreting neoplastic polyp: a unique endoscopic presentation of early colon cancer. Endoscopy 2007; 39 Suppl 1:E201. [PMID: 17614077 DOI: 10.1055/s-2007-966107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- K Fu
- Department of Radiology, Dokkyo University School of Medicine, Tochigi, Japan.
| | | | | | | | | | | |
Collapse
|
26
|
Fu KI, Ishikawa T, Fujii H, Hirabayashi K, Igarashi S, Kaji Y. An ileal metastasis from a parotid gland cancer that mimicked a flat adenoma. Endoscopy 2007; 39 Suppl 1:E28. [PMID: 17285507 DOI: 10.1055/s-2006-944988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- K I Fu
- Department of Radiology, Dokkyo University School of Medicine, Mibu, Shimotuga, Tochigi, Japan.
| | | | | | | | | | | |
Collapse
|
27
|
Koizumi J, Yamashita T, Dowaki S, Tobita K, Shimamura K, Hirabayashi K, Imai Y, Imaizumi T. Hepatobiliary and pancreatic: Hepatic adenoma, focal nodular hyperplasia and congenital absence of the portal vein. J Gastroenterol Hepatol 2006; 21:619. [PMID: 16638111 DOI: 10.1111/j.1440-1746.2006.04344.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
|
28
|
Asazuma T, Toyama Y, Watanabe M, Suzuki N, Fujimura Y, Hirabayashi K. Clinical features associated with recurrence of tumours of the spinal cord and cauda equina. Spinal Cord 2003; 41:85-9. [PMID: 12595870 DOI: 10.1038/sj.sc.3101394] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN Retrospective review of consecutive cases of recurrent spinal cord and cauda equina tumours. OBJECTIVES We sought to identify factors and conditions resulting in re-operation to treat recurrences of spinal cord and cauda equina tumours. SETTING Keio University Hospital, Tokyo, Japan. METHODS Re-operation was performed in 39 patients with spinal cord and cauda equina tumours. Times of operation, interval between operations, affected spinal level, tumour site on cross section, configurations among dumb-bell tumours, and pathologic diagnoses were analysed. Recurrence rates were defined in terms of the number of cases with re-operation due to tumour recurrence relative to the total number of surgical cases for the same period at our institution. RESULTS Recurrence rates were relatively high for intradural, extramedullary tumours and for tumours located anteriorly rather than laterally. Of patients with intradural, extramedullary plus extradural tumours who underwent initial surgery at our hospital, 75% (9/12) recurred; all tumours had dumb-bell-type configurations. The overall rate of re-operation due to tumour recurrence in 249 cases was 7.2% at our institution. By tumour types, 40% of malignant schwannomas recurred (2/5), as did 35.7% of neurofibromas (5/14), and 33.3% of ependymomas (6/18). CONCLUSION Risk factors for tumour recurrence were anterior location, an intradural, extramedullary plus extradural site, extensive dumb-bell tumours, and pathologic diagnoses of neurofibroma, ependymoma, or malignant schwannoma.
Collapse
Affiliation(s)
- T Asazuma
- Department of Orthopaedic Surgery, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama 359-8513, Japan
| | | | | | | | | | | |
Collapse
|
29
|
Kimura M, Inoue H, Hirabayashi K, Natsume H, Ogihara M. Glycyrrhizin and some analogues induce growth of primary cultured adult rat hepatocytes via epidermal growth factor receptors. Eur J Pharmacol 2001; 431:151-61. [PMID: 11728421 DOI: 10.1016/s0014-2999(01)01424-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We investigated the effects of glycyrrhizin (GL-1) and some analogues on DNA synthesis and proliferation in serum-free primary cultures of adult rat hepatocytes. The hepatocytes underwent DNA synthesis and proliferation in response to GL-1 and some analogues. The effects of these agents occurred in a time- and dose-dependent manner. The proliferative potency as judged by half-maximal effective concentrations was in the following order: 18-beta-H-glycyrrhetinic acid (GL-3; 4.5 x 10(-9) M)<18-beta-H-glycyrrhizin (GL-1; 4.4 x 10(-8) M)<18-alpha-H-glycyrrhetinic acid (GL-6; 6.0 x 10(-8) M). The analogue 18-alpha-H-glycyrrhetinic acid 3-O-beta-D-monoglucuronide (GL-5; 1.0 x 10(-7) M) weakly stimulated hepatocyte DNA synthesis and proliferation, whereas 18-alpha-H-glycyrrhizin (GL-4) and 18-beta-H-glycyrrhetinic acid 3-O-beta-D-monoglucuronide (GL-2) did not. The growth-promoting effects of GL-1, GL-3 and GL-6 were significantly inhibited at higher initial plating densities (7.0 x 10(4) and 10 x 10(4) cells/cm(2)). A monoclonal antibody against epidermal growth factor (EGF) receptor (1-100 ng/ml), but not that against EGF (1-100 ng/ml), dose-dependently inhibited glycyrrhizin- and analogue-induced hepatocyte DNA synthesis and proliferation. Specific inhibitors of growth-related signal transducers, such as genistein, PD98059 (2'-amino-3'-methoxyflavone) and rapamycin, completely blocked glycyrrhizin- and analogue-induced hepatocyte DNA synthesis and proliferation. Treatment of hepatocytes with GL-1, GL-3 and GL-6 rapidly stimulated tyrosine phosphorylation of the EGF receptor and p42 MAP kinase, which were inhibited by genistein and PD98059, respectively. These results suggest that glycyrrhizin and some analogues are primary hepatocyte mitogens that bind to EGF receptors and subsequently stimulate the receptor tyrosine kinase/mitogen-activated protein kinase pathway to induce hepatocyte DNA synthesis and proliferation.
Collapse
Affiliation(s)
- M Kimura
- Department of Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, Josai University, 1-1, Keyakidai, Sakado City, Saitama 350-0295, Japan
| | | | | | | | | |
Collapse
|
30
|
Mori A, Danda Y, Fujii T, Hirabayashi K, Osakada K. Hydroxorhodium complex-catalyzed carbon-carbon bond-forming reactions of silanediols with alpha,beta-unsaturated carbonyl compounds. Mizoroki-Heck-type reaction vs conjugate addition. J Am Chem Soc 2001; 123:10774-5. [PMID: 11674025 DOI: 10.1021/ja015928l] [Citation(s) in RCA: 118] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A Mori
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Yokohama 226-8503, Japan
| | | | | | | | | |
Collapse
|
31
|
Du X, Suguro M, Hirabayashi K, Mori A, Nishikata T, Hagiwara N, Kawata K, Okeda T, Wang HF, Fugami K, Kosugi M. Mizoroki-Heck type reaction of organoboron reagents with alkenes and alkynes. A Pd(II)-catalyzed pathway with Cu(OAc)2 as an oxidant. Org Lett 2001; 3:3313-6. [PMID: 11594822 DOI: 10.1021/ol016529y] [Citation(s) in RCA: 149] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text]. In contrast to the Pd(0)-catalyzed mechanism by Uemura, Mizoroki-Heck type reaction of boronic acids is found to proceed under a Pd(II)-mediated pathway using a catalytic amount of Pd(OAc)2 in the presence of Cu(OAc)2 as an oxidant. Treatment of a variety of alkenes with boronic acids, boronates, and sodium tetraphenylborate furnishes beta-arylated and alkenylated products in good to excellent yields. The reactions with norbornene, norbornadiene, and diphenylacetylene are also performed to give 1:2 or 2:1 coupling products.
Collapse
Affiliation(s)
- X Du
- Chemical Resources Laboratory, Tokyo Institute of Technology, Nagatsuta, Yokohama, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Abstract
Ovarian 20alpha-hydroxysteroid dehydrogenase (20alpha-HSD), which converts progesterone to a derivative devoid of biological activity, plays a crucial role in achieving the short estrous cycle in rats. Although 20alpha-HSD activity has also been demonstrated in the thymus, its molecular nature, function, and regulation of expression have yet to be determined. In the present study we investigated if 20alpha-HSD activity in the thymus originates in a transcript identical to that expressed in the ovary. RT-PCR analysis indicated the expression of 20alpha-HSD mRNA in rat thymus, and sequencing of the PCR product showed 100% identity to ovarian 20alpha-HSD cDNA. Immunohistochemical study using anti-rat ovarian 20alpha-HSD antibody demonstrated the expression of 20alpha-HSD protein in the thymus. The 20alpha-HSD-expressing cells in the thymus seemed to be some type of lymphocyte by their morphology. These results suggest that the same molecular species as ovarian 20a-HSD is expressed in thymic lymphocytes. Therefore, 20alpha-HSD may play a role in T-lymphocyte proliferation and differentiation processes.
Collapse
Affiliation(s)
- K Hirabayashi
- Department of Veterinary Physiology, Veterinary Medical Science, The University of Tokyo, Japan
| | | | | | | |
Collapse
|
33
|
Yonezawa T, Furuhata Y, Hirabayashi K, Suzuki M, Takahashi M, Nishihara M. Detection of transgene in progeny at different developmental stages following testis-mediated gene transfer. Mol Reprod Dev 2001; 60:196-201. [PMID: 11553918 DOI: 10.1002/mrd.1077] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We recently reported that exogenous DNA injected into testis as a liposome complex can be transferred into the egg via sperm by natural mating and integrated in the genome (testis-mediated gene transfer: TMGT). Here, we studied the efficiency of each of the several liposomes in associating foreign DNA with sperm, the expression of an introduced gene in early embryos, and the presence of the DNA in fetuses and pups at different ages. The CMV/beta-actin/EGFP fusion gene, encapsulated with different liposomes, was injected into rat testis, and spermatozoa in the cauda epididymis were obtained 1, 4, and 14 days after injection. We tested each of the 8 liposomes, and found that only 2, DMRIE-C and SuperFect, led to the detection of foreign DNA on all of the days examined, with relatively higher ratios of rats having positive sperm. By means of TMGT using either of those two liposomes, more than 80% of morula-stage embryos expressed EGFP, as observed by fluorescence microscopy. Then we detected introduced DNA in the progeny by PCR and Southern dot blot, and found that the ratio of animals carrying the foreign DNA decreased as they developed, and that only a part of postpartum progeny were foreign-DNA-positive with high incidence of mosaicism. These results suggest that, although, the success rate is still limited, foreign DNA could be integrated into the genome of the progeny by TMGT at least under specific experimental conditions, the efficiency of which depends largely on the characteristics of the liposome. The results also suggest that TMGT could be applicable to fetal gene therapy as well as to the generation of transgenic animals.
Collapse
Affiliation(s)
- T Yonezawa
- Department of Veterinary Physiology, Veterinary Medical Science, The University of Tokyo, Tokyo, Japan
| | | | | | | | | | | |
Collapse
|
34
|
Hirabayashi K, Wada M, Amano C. Compact optical-fiber variable attenuator arrays with polymer-network liquid crystals. Appl Opt 2001; 40:3509-3517. [PMID: 18360377 DOI: 10.1364/ao.40.003509] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Electrically controlled fiber variable-optical-attenuator arrays with polymer-network liquid crystals are shown to be compact and to have a large attenuation range (30-40 dB) and low residual loss (0.55 dB) at wavelengths from 1.3 to 1.6 mum. Their estimated power consumption is very low (<30 nW/channel), and arrays with more than ten channels can be made. The manufacturing process is simple: Trenches 30-100 mum wide are cut across parallel conductive-layer-coated optical fibers and are filled with a polymer-network liquid crystal. The attenuation properties depend on UV-curing conditions and on trench width.
Collapse
|
35
|
Inoue H, Shimoyama Y, Hirabayashi K, Kajigaya H, Yamamoto S, Oda H, Koshihara Y. Production of neuropeptide substance P by synovial fibroblasts from patients with rheumatoid arthritis and osteoarthritis. Neurosci Lett 2001; 303:149-52. [PMID: 11323107 DOI: 10.1016/s0304-3940(01)01713-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We examined the production of substance P (SP) in synovial fibroblasts derived from patients with rheumatoid arthritis (RA) and osteoarthritis (OA). Immunoreactive SP was observed in non-stimulated RA fibroblasts. The expression of beta-preprotachykinin-A (beta-PPT-A) mRNA was confirmed by reverse transcription-polymerase chain reaction analysis. SP contents in culture medium were increased by treatment of RA fibroblasts with transforming growth factor-beta (TGFbeta) (10 ng/ml). Levels of SP release were elevated at 12 h after TGFbeta stimulation whereas the expression of beta-PPT-A mRNA was enhanced at 3 h. Furthermore, SP production in response to TGFbeta was dose-dependently enhanced by basic fibroblast growth factor (bFGF). OA fibroblasts also significantly released SP in the presence of TGFbeta (10 ng/ml) plus bFGF (50 ng/ml). These results suggest that SP produced by synovial fibroblasts may participate in joint diseases.
Collapse
Affiliation(s)
- H Inoue
- Research Laboratory, Minophagen Pharmaceutical Co., 2-2-3, Komatsubara, Zama-shi, 228-0002, Kanagawa, Japan.
| | | | | | | | | | | | | |
Collapse
|
36
|
Ozaki H, Matsuyama T, Hirabayashi K, Iizuka M, Urano K, Kawakubo Y, Kanno S, Ozawa A, Ohkido M, Hirota F, Nagashima N. Tsutsugamushi disease in Kanagawa Prefecture, Japan: clinical report of two cases and survey of other incidences in 1998. Tokai J Exp Clin Med 2001; 26:19-24. [PMID: 11592298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Tsutsugamushi disease is characterized by the early appearance of a black crust at the bitten area and the subsequent development of macular or macropapular rush on the whole body with high fever. While treatment with tetracycline derivatives and chloramphenicols is effective, delayed diagnosis or inappropriate treatment will lead to fatality. In this report, we describe two typical cases of tsutsugamushi disease and discuss other incidences in Kanagawa Prefecture, Japan, in 1998. One of the present two patients was diagnosed to be a case of the new type by Kawasaki strain of Rickettsia tsutsugamushi, while responsible strain was not identified for the other case. Since the disease is spreading widely even to suburban areas, we emphasize the need to consider the possible diagnosis of tsutsugamushi disease in patients with generalized eruption and high fever.
Collapse
Affiliation(s)
- H Ozaki
- Department of Dermatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Abstract
STUDY DESIGN A retrospective analysis of the long-term outcomes of standard discectomy for lumbar disc herniation. OBJECTIVES To investigate the long-term outcomes of standard discectomy to address postoperative problems, including residual low back pain and recurrent herniation. SUMMARY OF BACKGROUND DATA Most previous investigators found that favorable outcomes of standard discectomy were maintained for the long-term postoperative period. Although they observed postoperative complications such as residual low back pain and recurrent herniation, detailed analyses of these results have not been conducted. METHODS The long-term follow-up results in patients who were observed for a minimum of 10 years after standard discectomy were evaluated by using the Japanese Orthopedic Association scoring system through direct examinations and questionnaires. Radiography also was used in patients who agreed to visit the hospital, and findings were compared with those on preoperative radiographs. RESULTS The average recovery rate calculated by using Japanese Orthopedic Association scores was 73.5 +/- 21.7%. Even though residual low back pain was found in 74.6% of the patients, only 12.7% had severe low back pain. The majority of the patients with severe low back pain were under 35 years of age at the time of operation, with preoperative advanced disc degeneration. The final Japanese Orthopedic Association scores in the patients with decreased disc height were significantly lower than those in patients with no decrease. However, the disc height of patients with a recurrent herniation was preserved. CONCLUSION The long-term outcome of standard discectomy in this series was favorable. Although patients with preserved disc height generally had favorable results, the risk of recurrent disc herniation was high in this population.
Collapse
Affiliation(s)
- E Yorimitsu
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan.
| | | | | | | |
Collapse
|
38
|
Abstract
BACKGROUND CONTEXT Laminoplasty has been reported to achieve good operative results for treatment of cervical stenotic myelopathy. However, long-term results and prognostic factors have not been well documented. Among postoperative complications, weakness of the shoulder girdle muscles has been reported as a particular complication of laminoplasty, but the cause is still poorly understood. PURPOSE Our aim was to clarify the short-term complications and long-term operative results after unilateral open-door laminoplasty and to identify the predictors for operative outcome. STUDY DESIGN We retrospectively reviewed short-term complications and long-term operative results associated with cervical stenotic myelopathy treated by unilateral open-door laminoplasty. PATIENT SAMPLE There were 162 men and 42 women with an average age of 57 years who were treated by unilateral open-door laminoplasty in the two institutions. Pathogenesis of myelopathy was cervical spondylosis in 88 patients, cervical disk herniation with a narrow spinal canal in 10, and ossification of the posterior longitudinal ligament in 106. OUTCOME MEASURES Postoperative complications and their outcomes were examined clinically in 204 patients, and causes of motor paresis were sought with postoperative computed tomography after myelography. Postoperative improvement of clinical symptoms was assessed by recovery rate calculated with the scores of the Japanese Orthopaedic Scoring System in 80 patients. METHODS The occurrence rate of short-term postoperative complications, causes of motor paresis, and their outcomes were reviewed in 204 patients. Clinical condition was assessed with the Japanese Orthopaedic Scoring System, recovery rate was calculated with the score, and prognostic factors for outcome were studied in 80 patients who were followed up for 5 years or longer (average, 8 years; range, 5-17 years). RESULTS Occurrence rate of complications, such as muscle weakness, deep infection, closure of opened laminae, and others, was 10.8%. Muscle weakness was observed in 7.8% of the patients. However, this rate decreased in recent years. The cause of motor paresis is not known with certainty, but it may be secondary to operative trauma, posterior shift of the spinal cord, or to displacement of the lamina in the hinge side. Recovery rate of clinical symptoms was 62.1% at the final follow-up. Rates were 63.6% for cervical spondylosis, 87.1% for cervical disk herniation, and 61.3% for ossification of the posterior longitudinal ligament. There was no significant difference between pathologies. Patient age younger than 60 years at the time of operation and less than 1 year's duration of symptoms before surgery were significantly associated with recovery rate of clinical symptoms. Recovery rate was not correlated with either preoperative function judged by the Japanese Orthopaedic Association score or spinal sagittal diameter. CONCLUSIONS The main cause of postoperative motor paresis of upper extremities is thought to be operative trauma, resulting from such procedures as air-drill and Kerrison rongeur handling. Short-term complications may decrease with the use of nontraumatic procedures. Better operative outcomes may be achieved with careful operative procedures and early operative treatment in the patients with myelopathy.
Collapse
Affiliation(s)
- K Satomi
- Department of Orthopaedic Surgery, Kyorin University School of Medicine, Mitaka-shi, Tokyo, Japan.
| | | | | | | |
Collapse
|
39
|
Katsumata N, Tsunematsu R, Tanaka K, Terashima Y, Ogita S, Hoshiai H, Kohno I, Hirabayashi K, Yakushiji M, Noda K, Taguchi T. A phase II trial of docetaxel in platinum pre-treated patients with advanced epithelial ovarian cancer: a Japanese cooperative study. Ann Oncol 2000; 11:1531-6. [PMID: 11205459 DOI: 10.1023/a:1008337103708] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND This phase II study was conducted to evaluate the efficacy and toxicity of docetaxel in Japanese patients with advanced ovarian cancer. PATIENTS AND METHODS Docetaxel was administered at a dose of 70 mg/m2 intravenously to patients with platinum pretreated advanced ovarian cancer. Treatment was repeated every three weeks. No routine corticosteroid premedication was given. RESULTS Ninety patients with advanced ovarian cancer were entered and sixty were assessable for response. The overall response rate was 28% in the assessable patients (95% confidence interval (95% CI): 17.54%-41.4%). CA125 responses were seen in 8 (24%) of 34 assessable patients for CA125 criteria. The 36 platinum-refractory patients had a response rate of 25% compared with 33% in the platinum-sensitive patients. The predominant toxicity was neutropenia, with 86% of the patients experiencing grade 3 or 4. Hypersensitivity reactions occurred in 37% of the patients and were not life threatening. Edema was mild and infrequent. CONCLUSION Docetaxel at 70 mg/m2 demonstrated effectiveness as a treatment of both platinum-sensitive and platinum-refractory ovarian cancer patients, with a low incidence of severe hypersensitivity reactions and edema.
Collapse
Affiliation(s)
- N Katsumata
- National Cancer Center Hospital, Tokyo, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Chiba K, Toyama Y, Watanabe M, Maruiwa H, Matsumoto M, Hirabayashi K. Impact of longitudinal distance of the cervical spine on the results of expansive open-door laminoplasty. Spine (Phila Pa 1976) 2000; 25:2893-8. [PMID: 11074676 DOI: 10.1097/00007632-200011150-00010] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A retrospective study in patients who underwent expansive open-door laminoplasty (ELAP) for cervical myelopathy and in whom the cervical alignment was nonlordotic at the final follow-up to analyze the correlation between the longitudinal distance of the cervical spine and surgical results. OBJECTIVES To determine the impact of longitudinal distance of the cervical spine on surgical results of ELAP and to propose a new concept, the redundant spinal cord, that may influence patient selection for ELAP. SUMMARY OF BACKGROUND DATA Results in many studies have demonstrated that postoperative cervical alignment has significant effect on surgical results, and spines that are malaligned are thought to deteriorate. The current surgical data showed that not all patients with postoperative malalignment had poor surgical results. Patients with cervical spondylotic myelopathy (CSM) tended to have better clinical results than those with ossification of the posterior longitudinal ligament (OPLL). METHODS Results in 70 patients who underwent ELAP for cervical myelopathy with postoperative cervical malalignment were investigated. The longitudinal distance index (LDI) was defined as the length of a vertical line between the posteroinferior edges of C2 and C7 divided by the anteroposterior diameter of C4 and was measured on lateral neutral radiographs at final follow-up. Correlation between LDI and surgical results represented by Japanese Orthopedic Association scores and percentage of recovery were analyzed statistically in each patient. RESULTS Patients with CSM had smaller LDI and better surgical results than those with OPLL. Weak but significant negative correlation was detected between LDI and percentage of recovery, indicating that longitudinal distance of the cervical spine may have some degree of impact on the surgical results of ELAP. CONCLUSION A decrease in LDI represents shortening of the cervical spine caused by multiple disc degeneration and may influence surgical results of ELAP by inducing redundancy of the spinal cord in patients with postoperative malalignment.
Collapse
Affiliation(s)
- K Chiba
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan.
| | | | | | | | | | | |
Collapse
|
41
|
Furuhata Y, Kagaya R, Hirabayashi K, Ikeda A, Chang KT, Nishihara M, Takahashi M. Development of obesity in transgenic rats with low circulating growth hormone levels: involvement of leptin resistance. Eur J Endocrinol 2000; 143:535-41. [PMID: 11022201 DOI: 10.1530/eje.0.1430535] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Human growth hormone (hGH) transgenic (TG) rats have been produced in our laboratory. These TG rats are characterized by low circulating hGH levels, virtually no endogenous rGH secretion, and massive obesity. OBJECTIVE To elucidate how energy balance and leptin sensitivity contributed to the establishment of this obesity. DESIGN AND METHODS Food intake, locomotor activity and leptin concentrations in serum and cerebrospinal fluid were measured in TG rats and their non-transgenic littermates (control). The effect of intraperitoneal and intracerebroventricular injection of leptin on food intake and body weight gain was also examined. RESULTS An increase in food intake and a decrease in locomotor activity were observed from 4 and 7 weeks of age, respectively, in the transgenic rats compared with control. Serum leptin concentrations of the transgenic rats were more than twice as high as those of control rats and were associated with an increased white adipose tissue mass and ob gene expression. Intraperitoneal injection of leptin significantly decreased food intake and body weight gain in control rats, but not in transgenic rats. Leptin concentration in the cerebrospinal fluid of transgenic rats was not different from that of control rats, and intracerebroventricular injection of leptin was similarly effective in reducing food intake and body weight gain as it was in control rats. CONCLUSIONS These results suggest that the transgenic rats, whose GH secretion is suppressed, develop obesity due to early onset of an increase in food intake and a decrease in locomotor activity with leptin resistance resulting from deteriorating leptin transport from peripheral blood to cerebrospinal fluid.
Collapse
Affiliation(s)
- Y Furuhata
- Department of Veterinary Physiology, Veterinary Medical Science, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | | | | | | | | | | | | |
Collapse
|
42
|
Mori A, Kawashima J, Shimada T, Suguro M, Hirabayashi K, Nishihara Y. Non-Sonogashira-type palladium-catalyzed coupling reactions of terminal alkynes assisted by silver(I) oxide or tetrabutylammonium fluoride. Org Lett 2000; 2:2935-7. [PMID: 10986076 DOI: 10.1021/ol0061586] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Palladium-catalyzed reaction of aryl and alkenyl halides with terminal alkynes in the presence of silver(I) oxide as an activator furnishes various arylated or alkenylated alkynes in good to excellent yields. The similar coupling reaction is also found to proceed using tetrabutylammonium fluoride (TBAF) or tetrabutylammonium hydroxide (TBAOH) as an activator.
Collapse
Affiliation(s)
- A Mori
- Chemical Resources Laboratory, Tokyo Institute of Technology, Nagatsuta, Yokohama 226-8503, Japan.
| | | | | | | | | | | |
Collapse
|
43
|
Fujita M, Kusaka T, Hirabayashi K, Fujimori T. [Histopathological diagnosis in reflux esophagitis]. Nihon Rinsho 2000; 58:1813-7. [PMID: 11004808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
We reviewed the histopathological features for the diagnosis of reflux esophagitis and gastroesophageal reflux disease(GERD) including carcinogenesis of the esophagus. Histologically, the presence of capillary dilatation, elongation of papillary, hyperplasia of basal layer, inflammatory cells-infiltration, balloon cells in the epithelium, and ulceration were evaluated in GERD cases. Although, histopathological changes were not clear in endoscopic-negative GERD cases, immunohistochemical examination with cell cycle protein(PCNA, p21, and p27) revealed the same abnormalities with GERD cases. In Japan, the majority cases of GERD are evaluated in grade according to Los Angeles system, therefore the prevalence of Barrett's esophagus and cancer is very low. We hypothesize that esophageal squamous cell carcinoma arising from GERD different from Barrett's cancer sequence, and clinicopathological long-term follow up will be required to assess the carcinogenesis including gene analysis.
Collapse
Affiliation(s)
- M Fujita
- Department of Surgical and Molecular Pathology, Dokkyo University School of Medicine
| | | | | | | |
Collapse
|
44
|
Hirabayashi K, Yano J, Takesue H, Fujiwara N, Irimura T. Inhibition of metastatic carcinoma cell growth in livers by poly(I):poly(C)/cationic liposome complex (LIC). Oncol Res 2000; 11:497-504. [PMID: 10905561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
The complex of poly(I):poly(C) and a new cationic liposome (LIC) has a potent antitumor activity against many tumor cell lines in vitro, whereas poly(I):poly(C) itself has no such activity. In the present study we tested the sensitivity of 21 human colon and pancreatic cancer cell lines to LIC or Adriamycin in vitro. The growth of most of the cell lines was strongly inhibited by both LIC and Adriamycin in vitro, although a few insensitive cell lines were different. We also studied the in vivo antitumor activity of LIC or Adriamycin in three experimental liver metastasis models in nude mice using a human pancreatic cancer cell line (AsPC-1) and two human colon cancer cell lines (Ls174T and HCC-M1544). The administration of LIC or Adriamycin was started 3 days after the injection of tumor cells. Animals received 0.1 mg/kg LIC IV twice weekly or 5 mg/kg Adriamycin IV every 5 days during the experiments. LIC showed potent antitumor activity in all three liver cancer models. Although Adriamycin had potent antitumor activity in the HCC-M1544 model, it had only a moderate effect in the AsPC-1 model and at most a weak effect in the Ls174T model. At the effective doses LIC did not cause detectable pathological changes in the liver and did not elicit toxicity to mice in these models, whereas Adriamycin did exhibit toxic effects. These results suggest that LIC is a promising candidate drug to treat hepatic metastasis.
Collapse
Affiliation(s)
- K Hirabayashi
- Discovery Research Laboratories, Nippon Shinyaku Co. Ltd., Kyoto, Japan.
| | | | | | | | | |
Collapse
|
45
|
Hirabayashi K, Numa F, Suminami Y, Murakami A, Murakami T, Kato H. Altered proliferative and metastatic potential associated with increased expression of syndecan-1. Tumour Biol 2000; 19:454-63. [PMID: 9817973 DOI: 10.1159/000030037] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The process of metastasis involves a series of sequential steps in which malignant cells are released from the primary tumor and metastasize to distant sites. Syndecan-1 is a cell surface proteoglycan that mediates cell adhesion and undergoes changes upon cell transformation of some cells that may contribute to the process of metastasis. To investigate the possible role of syndecan-1 in cell proliferation and metastatic potential, we employed a highly metastatic cell line (KLN 205) derived from mouse lung squamous cell carcinoma that expressed moderate amounts of syndecan-1. At first, endogenous syndecan-1 production was inhibited by an antisense oligodeoxynucleotides (ODNs). Since antisense ODNs of syndecan-1 inhibited cell growth, we established stable transfectants of syndecan-1 in this cell line to examine a proliferative advantage with the level of syndecan-1 expression. Overexpresser cells grew at a significantly faster rate than the vector-transfected control and showed greater incidence of tumor formation when injected subcutaneously into nude mice. Surprisingly, overexpresser cells enhanced pulmonary metastasis when injected intravenously. These results indicate that syndecan-1 expression plays a role in the control of cell proliferation and suggest that syndecan-1 expression may be involved in facilitating distant metastasis of tumor cells once they managed to enter the bloodstream (after intravasation steps).
Collapse
Affiliation(s)
- K Hirabayashi
- Department of Obstetrics and Gynecology, Yamaguchi University School of Medicine, Kogushi Ube, Japan
| | | | | | | | | | | |
Collapse
|
46
|
Liu X, Saiki N, Kohno A, Fujioka M, Hirabayashi K, Komori T, Kobayashi Y, Sunagawa M. Retroperitoneal squamous cell carcinoma: metastasis from uterine endometrial carcinoma? Radiat Med 2000; 18:267-71. [PMID: 11247005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
A case of a retroperitoneal squamous cell carcinoma (SCC) in a 61-year-old woman is reported. Imaging studies demonstrated a well-defined solid and cystic mass with suggested inferior vena cava (IVC) invasion. She had had a history of uterine endometrioid adenocarcinoma (EAC) with squamous differentiation (Grade 1) five years previously. Based on the pathological findings, this retroperitoneal neoplasm was thought to be a metastasis from the uterine EAC.
Collapse
Affiliation(s)
- X Liu
- Department of Radiology, Dokkyo University School of Medicine, Tochigi, Japan
| | | | | | | | | | | | | | | |
Collapse
|
47
|
Suminami Y, Nagashima S, Vujanovic NL, Hirabayashi K, Kato H, Whiteside TL. Inhibition of apoptosis in human tumour cells by the tumour-associated serpin, SCC antigen-1. Br J Cancer 2000; 82:981-9. [PMID: 10732775 PMCID: PMC2374407 DOI: 10.1054/bjoc.1999.1028] [Citation(s) in RCA: 109] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The squamous cell carcinoma antigen (SCC Ag) is a tumour-associated protein and a member of the serine protease inhibitor (serpin) family. The SCC Ag has been used as a serologic tumour marker for SCC progression, and its elevated serum levels are a risk factor for disease relapse. However, the biologic significance of this intracytoplasmic protein in cancer cells remains unknown. In this report, we demonstrated that apoptosis induced by 7-ethyl-10-hydroxycamptothecin, tumour necrosis factor-alpha (TNF-alpha) or interleukin (IL)-2-activated natural killer (NK) cells was significantly inhibited in tumour cells transduced with the SCC Ag-1 cDNA, as compared to control cells in vitro. Also, inhibition of the SCC Ag-1 expression in tumour cells by transfection of antisense SCC Ag-1 cDNA was accompanied by significantly increased sensitivity of these cells to apoptosis induced by etoposide or TNF-alpha. The mechanism of protection of tumour cells from apoptosis involved inhibition of caspase-3 activity and/or upstream proteases. In vivo, tumour cells overexpressing the SCC Ag-1 formed significantly larger tumours in nude mice than the SCC Ag-1-negative controls. Thus, overexpression of the SCC Ag-1, a member of the serpin family, in human cancer cells contributed to their survival by mediating protection from drug-, cytokine- or effector cell-induced apoptosis.
Collapse
Affiliation(s)
- Y Suminami
- University of Pittsburgh Cancer Institute, University of Pittsburgh School of Medicine, PA 15213, USA
| | | | | | | | | | | |
Collapse
|
48
|
Ito Y, Kogure H, Tajima T, Kondo T, Yamaguchi H, Kita J, Oida M, Monma K, Hirabayashi K, Fujimori T. [A case of perforated diverticulum of the transverse colon]. Nihon Shokakibyo Gakkai Zasshi 2000; 97:181-5. [PMID: 10707587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Affiliation(s)
- Y Ito
- Second Department of Surgery, Dokkyo University School of Medicine
| | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Kuranaga E, Kanuka H, Hirabayashi K, Suzuki M, Nishihara M, Takahashi M. Progesterone is a cell death suppressor that downregulates Fas expression in rat corpus luteum. FEBS Lett 2000; 466:279-82. [PMID: 10682843 DOI: 10.1016/s0014-5793(00)01090-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In female rats, apoptotic cell death in the corpus luteum is induced by the prolactin (PRL) surge occurring in the proestrous afternoon during the estrous cycle. We have previously shown that this luteolytic action of PRL is mediated by the Fas/Fas ligand (FasL) system. During pregnancy or pseudopregnancy, apoptosis does not occur in the corpus luteum. Progesterone (P4), a steroid hormone secreted from luteal steroidogenic cells, attenuated PRL-induced apoptosis in cultured luteal cells in a dose-dependent manner. P4 significantly decreased the expression of mRNA of Fas, but not FasL, in cultured luteal cells prepared from both proestrous and mid-pseudopregnant rats. These data indicate that P4 suppresses PRL-induced luteal cell apoptosis via reduction of the expression level of Fas mRNA in the corpus luteum, suggesting that P4 acts as an important factor that can change the sensitivity of corpus luteum to PRL.
Collapse
Affiliation(s)
- E Kuranaga
- Department of Veterinary Physiology, Veterinary Medical Science, The University of Tokyo, Japan
| | | | | | | | | | | |
Collapse
|
50
|
Hirabayashi K, Yano J, Inoue T, Yamaguchi T, Tanigawara K, Smyth GE, Ishiyama K, Ohgi T, Kimura K, Irimura T. Inhibition of cancer cell growth by polyinosinic-polycytidylic acid/cationic liposome complex: a new biological activity. Cancer Res 1999; 59:4325-33. [PMID: 10485480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
A complex of polyinosinic-polycytidylic acid [poly(I) x poly(C)] and cationic liposome (LIC) inhibited the growth of many tumor cell lines at low concentration in vitro, but poly(I) x poly(C) alone had no such antiproliferative effect. The IC50 values of LIC against the tumor cells ranged from 0.1 to 1000 ng/ml. LIC had strong cytotoxic effects on malignant cells of epithelial and fibroblastic origin from various tissues and was also effective against Adriamycin-resistant tumor cells. LIC did not significantly affect the growth of lymphoma cells, leukemia cells, normal diploid fibroblasts, or primary liver cells at concentrations up to 10 microg/ml. The mechanism of the antiproliferative effect of LIC against malignant cells was the induction of apoptosis. LIC induced the fragmentation of nuclear DNA and the degradation of rRNA in tumor cells. The DNA fragmentation occurred within 1-5 h after the addition of LIC, and both the fragmentation and the inhibition of cancer-cell growth were suppressed by a nuclease inhibitor. In contrast, caspase inhibitors did not affect the antiproliferative activity of LIC. These results suggest that LIC induced apoptosis in malignant cells through the direct activation of nucleases and not through the activation of caspases. LIC reduced the incidence and the size of metastatic liver-cancer tumors in two different mouse metastatic liver-cancer models using human colon carcinoma cells. Histochemical analysis revealed that the KM12-HX cells in the tumor nodules were undergoing apoptosis; therefore, LIC also induced the apoptosis of tumor cells in vivo. In these animal models, LIC caused no observed changes in normal hepatocytes.
Collapse
Affiliation(s)
- K Hirabayashi
- Discovery Research Laboratories, Nippon Shinyaku Co., Ltd., Kyoto, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|