1
|
Tsurukawa S, Zuiki M, Naito Y, Kitamura K, Matsumura U, Kanayama T, Ichise E, Horiguchi G, Teramukai S, Komatsu H. Oxygenation saturation index in neonatal hypoxemic respiratory failure. Pediatr Int 2024; 66:e15753. [PMID: 38641936 DOI: 10.1111/ped.15753] [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: 02/14/2023] [Revised: 12/03/2023] [Accepted: 01/16/2024] [Indexed: 04/21/2024]
Abstract
BACKGROUND This study aimed to assess the validity of the oxygenation saturation index (OSI) and the ratio of oxygen saturation to the fraction of inspired oxygen (FIO2) (S/F ratio) with percutaneous oxygen saturation (OSISpO2 and the Sp/F ratio) and to evaluate the correlation between these values and the oxygen index (OI). It also determined their cut-off values for predicting OI in accordance with neonatal hypoxic respiratory failure severity. METHODS We reviewed the data of 77 neonates (gestational age 31.7 ± 6.1 weeks; birthweight, 1768 ± 983 g) requiring invasive mechanical ventilation between 2013 and 2020, 1233 arterial blood gas samples in total. We calculated the OI, OSISpO2, OSI with arterial oxygen saturation (SaO2) (OSISaO2), Sp/F ratio, and the ratio of SaO2 to FIO2 (Sa/F ratio). RESULTS The regression and Bland-Altman analysis showed good agreement between OSISpO2 or the Sp/F ratio and OSISaO2 or the Sa/F ratio. Although a significant positive correlation was found between OSISpO2 and OI, OSISpO2 was overestimated in SpO2 > 98% with a higher slope of the fitted regression line than that below 98% of SpO2. Furthermore, receiver-operating characteristic curve analysis using only SpO2 ≤ 98% samples showed that the optimal cut-off points of OSISpO2 and the Sp/F ratio for predicting OI were: OI 5, 3.0 and 332; OI 10, 5.3 and 231; OI 15, 7.7 and 108; OI 20, 11.0 and 149; and OI 25, 17.1 and 103, respectively. CONCLUSION The cut-off OSISpO2 and Sp/F ratio values could allow continuous monitoring for oxygenation changes in neonates with the potential for wider clinical applications.
Collapse
Affiliation(s)
- Shinichiro Tsurukawa
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
- Department of Pediatrics, Nagasaki Kamigoto Hospital, Nagasaki, Japan
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Masashi Zuiki
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yuki Naito
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kazumasa Kitamura
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Utsuki Matsumura
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
- Department of Pediatrics, Nagasaki Kamigoto Hospital, Nagasaki, Japan
| | - Takuyo Kanayama
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Eisuke Ichise
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Go Horiguchi
- Department of Biostatistics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Satoshi Teramukai
- Department of Biostatistics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hiroshi Komatsu
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
| |
Collapse
|
2
|
Okamoto K, Osone S, Matsuura A, Asazuma M, Matsuoka T, Kanayama T, Imamura T, Hosoi H. [HLA-mismatched bone marrow transplantation with post-transplant cyclophosphamide for pediatric patients with aplastic anemia]. Rinsho Ketsueki 2022; 63:45-50. [PMID: 35135951 DOI: 10.11406/rinketsu.63.45] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Post-transplant cyclophosphamide (PTCy) has improved the efficacy of HLA-mismatched hematopoietic cell transplantation (HCT) by decreasing the risk of graft-versus-host disease (GVHD) and nonrelapse mortality. If an HLA-matched donor is not available, GVHD prophylaxis with PTCy can also be used for HLA-mismatched HCT in patients with pediatric aplastic anemia (AA). We report two cases of pediatric AA that were treated with HLA-mismatched HCT with reduced-intensity conditioning and PTCy. We administered 50 mg/kg/day Cy for GVHD prophylaxis on days 3 and 4, and tacrolimus and mycophenolate mofetil (or methotrexate) were initiated from day 5. In both the cases, the time to engraftment was favorable and GVHD and infection were controllable. PTCy probably allows us to expand donor candidates in pediatric AA when an HLA-matched donor is not available; however, further studies regarding optimal conditioning regimens and late complications are required.
Collapse
Affiliation(s)
- Kenji Okamoto
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
| | - Shinya Osone
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
| | - Amane Matsuura
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
| | - Masamichi Asazuma
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
| | - Taro Matsuoka
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
| | - Takuyo Kanayama
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center
| | - Toshihiko Imamura
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
| | - Hajime Hosoi
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
- Department of Nursing, Doshisha Women's College of Liberal Arts
| |
Collapse
|
3
|
Hasegawa T, Kanayama T, Komatsu H. Acute promyelocytic leukemia complicated by iliac subperiosteal hematoma. Pediatr Int 2022; 64:e15078. [PMID: 35313043 DOI: 10.1111/ped.15078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 11/04/2021] [Accepted: 11/25/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Tomohiro Hasegawa
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
| | - Takuyo Kanayama
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
| | - Hiroshi Komatsu
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
| |
Collapse
|
4
|
Kume R, Kanayama T, Zuiki M, Inoue Y, Komatsu H. Pediatric subarachnoid hemorrhage and aneurysm caused by fibromuscular dysplasia. Pediatr Int 2022; 64:e14899. [PMID: 35060243 DOI: 10.1111/ped.14899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 05/18/2021] [Accepted: 06/23/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Rika Kume
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
| | - Takuyo Kanayama
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
| | - Masashi Zuiki
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
| | - Yasuo Inoue
- Department of Neurosurgery, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
| | - Hiroshi Komatsu
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Japan
| |
Collapse
|
5
|
Kanayama T, Miyachi M, Sugimoto Y, Yagyu S, Kikuchi K, Tsuchiya K, Iehara T, Hosoi H. Reduced B7-H3 expression by PAX3-FOXO1 knockdown inhibits cellular motility and promotes myogenic differentiation in alveolar rhabdomyosarcoma. Sci Rep 2021; 11:18802. [PMID: 34552155 PMCID: PMC8458399 DOI: 10.1038/s41598-021-98322-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 04/25/2021] [Accepted: 09/07/2021] [Indexed: 11/09/2022] Open
Abstract
B7-H3 (also known as CD276) is associated with aggressive characteristics in various cancers. Meanwhile, in alveolar rhabdomyosarcoma (ARMS), PAX3-FOXO1 fusion protein is associated with increased aggressiveness and poor prognosis. In the present study, we explored the relationship between PAX3-FOXO1 and B7-H3 and the biological roles of B7-H3 in ARMS. Quantitative real time PCR and flow cytometry revealed that PAX3-FOXO1 knockdown downregulated B7-H3 expression in all the selected cell lines (Rh-30, Rh-41, and Rh-28), suggesting that PAX3-FOXO1 positively regulates B7-H3 expression. Gene expression analysis revealed that various genes and pathways involved in chemotaxis, INF-γ production, and myogenic differentiation were commonly affected by the knockdown of PAX3-FOXO1 and B7-H3. Wound healing and transwell migration assays revealed that both PAX3-FOXO1 and B7-H3 were associated with cell migration. Furthermore, knockdown of PAX3-FOXO1 or B7-H3 induced myogenin expression in all cell lines, although myosin heavy chain induction varied depending on the cellular context. Our results indicate that PAX3-FOXO1 regulates B7-H3 expression and that PAX3-FOXO1 and B7-H3 are commonly associated with multiple pathways related to an aggressive phenotype in ARMS, such as cell migration and myogenic differentiation block.
Collapse
Affiliation(s)
- Takuyo Kanayama
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Mitsuru Miyachi
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan.
| | - Yohei Sugimoto
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Shigeki Yagyu
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Ken Kikuchi
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Kunihiko Tsuchiya
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Tomoko Iehara
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Hajime Hosoi
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| |
Collapse
|
6
|
Zuiki M, Kume R, Matsuura A, Mitsuno K, Kitamura K, Kanayama T, Komatsu H. Large difference between Enghoff and Bohr dead space in ventilated infants with hypoxemic respiratory failure. Pediatr Pulmonol 2021; 56:2102-2107. [PMID: 33866691 DOI: 10.1002/ppul.25403] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 03/16/2021] [Accepted: 03/26/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND Ventilated neonates with hypoxemic respiratory failure (HRF) may show a ventilation-perfusion (V/Q) mismatch. OBJECTIVE To evaluate the difference between the Bohr (Vd, Bohr ) and Enghoff (Vd, Enghoff ) dead spaces in infants by using volumetric capnography based on ventilator graphics and capnograms. METHODS This study enrolled 46 ventilated infants (mean birth weight, 2239 ± 640 g; mean gestational age, 35.5 ± 3.3 weeks). We performed volumetric capnography and calculated Vd, Bohr and Vd, Enghoff when arterial blood sampling was necessary for treatment. According to the oxygenation index (OI) based on the Montreux definition of neonatal acute respiratory distress syndrome, each measurement was classified into the HRF (OI ≥ 4) or control (OI < 4) group. Then, a regression analysis was performed to evaluate the correlation between the OI and the difference between Vd, Enghoff and Vd, Bohr . RESULTS The median Vd, Enghoff /tidal volume (VT ) was significantly higher in the HRF group (0.55 [interquartile range, 0.47-0.68]) than in the control group (0.46 [0.37-0.57]). The HRF group showed a larger difference between Vd, Enghoff /VT and Vd, Bohr /VT than the control group (median, 0.22 [0.15-0.29] vs. 0.10 [0.06-0.14], respectively). Moreover, the regression analysis of the relationship between OI and Vd, Enghoff /VT - Vd, Bohr /VT showed a positive correlation (r = .60, p < .001). CONCLUSION Ventilated neonates with hypoxemic respiratory failure showed a large difference between Vd, Enghoff and Vd, Bohr , possibly reflecting a low V/Q mismatch and right-to-left shunting.
Collapse
Affiliation(s)
- Masashi Zuiki
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Kyoto, Japan.,Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto, Japan
| | - Rika Kume
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Kyoto, Japan
| | - Amane Matsuura
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Kyoto, Japan
| | - Kohei Mitsuno
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Kyoto, Japan
| | - Kazumasa Kitamura
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Kyoto, Japan
| | - Takuyo Kanayama
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Kyoto, Japan
| | - Hiroshi Komatsu
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru, Kyoto, Japan
| |
Collapse
|
7
|
Sakurai Y, Sarashina T, Toriumi N, Hatakeyama N, Kanayama T, Imamura T, Osumi T, Ohki K, Kiyokawa N, Azuma H. B-Cell Precursor-Acute Lymphoblastic Leukemia With EBF1-PDGFRB Fusion Treated With Hematopoietic Stem Cell Transplantation and Imatinib: A Case Report and Literature Review. J Pediatr Hematol Oncol 2021; 43:e105-e108. [PMID: 32068648 DOI: 10.1097/mph.0000000000001743] [Citation(s) in RCA: 3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A 9-year-old girl was diagnosed with B-cell precursor-acute lymphoblastic leukemia (BCP-ALL). Although she entered remission after induction therapy, she relapsed 15 months after maintenance therapy cessation. Since further investigation revealed EBF1-PDGFRB fusion, her condition was treated as BCR-ABL1-like acute lymphoblastic leukemia. She was started on a tyrosine kinase inhibitor, imatinib, and chemotherapy and underwent umbilical cord blood transplantation following reduced intensity conditioning. She has remained in complete remission for 36 months after cord blood transplantation. This case demonstrates the successful use of a tyrosine kinase inhibitor to treat BCP-ALL with a fusion transcript and highlights the need for a standardized treatment protocol.
Collapse
Affiliation(s)
- Yukari Sakurai
- Department of Pediatrics, Asahikawa Medical University, Asahikawa, Hokkaido Prefecture
| | - Takeo Sarashina
- Department of Pediatrics, Asahikawa Medical University, Asahikawa, Hokkaido Prefecture
| | - Naohisa Toriumi
- Department of Pediatrics, Asahikawa Medical University, Asahikawa, Hokkaido Prefecture
| | - Naoki Hatakeyama
- Department of Pediatrics, Asahikawa Medical University, Asahikawa, Hokkaido Prefecture
| | - Takuyo Kanayama
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto
| | - Toshihiko Imamura
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto
| | | | - Kentaro Ohki
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Nobutaka Kiyokawa
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Hiroshi Azuma
- Department of Pediatrics, Asahikawa Medical University, Asahikawa, Hokkaido Prefecture
| |
Collapse
|
8
|
Zuiki M, Naito Y, Kitamura K, Tsurukawa S, Matsumura U, Kanayama T, Komatsu H. Reduction in minute alveolar ventilation causes hypercapnia in ventilated neonates with respiratory distress. Eur J Pediatr 2021; 180:241-246. [PMID: 32748016 PMCID: PMC7397965 DOI: 10.1007/s00431-020-03761-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/19/2020] [Accepted: 07/28/2020] [Indexed: 11/28/2022]
Abstract
Hypercapnia occurs in ventilated infants even if tidal volume (VT) and minute ventilation (VE) are maintained. We hypothesised that increased physiological dead space (Vd,phys) caused decreased minute alveolar ventilation (VA; alveolar ventilation (VA) × respiratory rate) in well-ventilated infants with hypercapnia. We investigated the relationship between dead space and partial pressure of carbon dioxide (PaCO2) and assessed VA. Intubated infants (n = 33; mean birth weight, 2257 ± 641 g; mean gestational age, 35.0 ± 3.3 weeks) were enrolled. We performed volumetric capnography (Vcap), and calculated Vd,phys and VA when arterial blood sampling was necessary. PaCO2 was positively correlated with alveolar dead space (Vd,alv) (r = 0.54, p < 0.001) and Vd,phys (r = 0.48, p < 0.001), but not Fowler dead space (r = 0.14, p = 0.12). Normocapnia (82 measurements; 35 mmHg ≤ PaCO2 < 45 mmHg) and hypercapnia groups (57 measurements; 45 mmHg ≤ PaCO2) were classified. The hypercapnia group had higher Vd,phys (median 0.57 (IQR, 0.44-0.67)) than the normocapnia group (median Vd,phys/VT = 0.46 (IQR, 0.37-0.58)], with no difference in VT. The hypercapnia group had lower VA (123 (IQR, 87-166) ml/kg/min) than the normocapnia group (151 (IQR, 115-180) ml/kg/min), with no difference in VE.Conclusion: Reduction of VA in well-ventilated neonates induces hypercapnia, caused by an increase in Vd,phys. What is Known: • Volumetric capnography based on ventilator graphics and capnograms is a useful tool in determining physiological dead space of ventilated infants and investigating the cause of hypercapnia. What is New: • This study adds evidence that reduction in minute alveolar ventilation causes hypercapnia in ventilated neonates.
Collapse
Affiliation(s)
- Masashi Zuiki
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, 2410 Yukinaga, Maizuru, Kyoto, 625-8502, Japan.
| | - Yuki Naito
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, 2410 Yukinaga, Maizuru, Kyoto, 625-8502 Japan
| | - Kazumasa Kitamura
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, 2410 Yukinaga, Maizuru, Kyoto, 625-8502 Japan
| | - Shinichiro Tsurukawa
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, 2410 Yukinaga, Maizuru, Kyoto, 625-8502 Japan
| | - Utsuki Matsumura
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, 2410 Yukinaga, Maizuru, Kyoto, 625-8502 Japan
| | - Takuyo Kanayama
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, 2410 Yukinaga, Maizuru, Kyoto, 625-8502 Japan
| | - Hiroshi Komatsu
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, 2410 Yukinaga, Maizuru, Kyoto, 625-8502 Japan
| |
Collapse
|
9
|
Kanayama T, Imamura T, Mayumi A, Soma E, Sakamoto K, Hayakawa F, Tanizawa A, Kiyokawa N, Hosoi H. Functional analysis of a novel fusion protein PAX5-KIDINS220 identified in a pediatric Ph-like ALL patient. Int J Hematol 2020; 112:714-719. [PMID: 32656633 DOI: 10.1007/s12185-020-02944-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 05/19/2020] [Revised: 06/29/2020] [Accepted: 07/07/2020] [Indexed: 01/10/2023]
Abstract
PAX5-KIDINS220 (PAX5-K220) is a novel chimeric fusion gene identified in a pediatric Philadelphia chromosome (Ph)-like acute lymphoblastic leukemia (ALL) patient, but the function of the encoded fusion protein has not yet been analyzed. Here, we report the functional analysis of PAX5-K220 in vitro. We successfully generated PAX5-K220 expressing cells and demonstrate that PAX5-K220 is a nuclear protein. Luciferase reporter assay reveals that PAX5-K220 inhibits wild-type PAX5 transcriptional activity in a dominant-negative fashion like other PAX5-related fusion proteins, and may contribute to lymphocyte differentiation block. However, although identified in Ph-like ALL, PAX5-K220 does not induce IL-3-independent proliferation when transduced in the IL-3-dependent Ba/F3 murine leukemia cells, but rather attenuates growth. These results reveal that PAX5-K220 certainly shares the character with other PAX5-related fusion proteins rather than other fusion proteins with tyrosine kinase activity identified in Ph-like ALL, and did not contribute to proliferation activity. Precise functional analysis of each differently partnered PAX5 fusion protein is warranted in the future for better understanding of PAX5-related translocations and their effects.
Collapse
Affiliation(s)
- Takuyo Kanayama
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Toshihiko Imamura
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan.
| | - Azusa Mayumi
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Emi Soma
- Department of Clinical and Translational Physiology, Kyoto Pharmaceutical University, Kyoto, Japan
| | - Kenichi Sakamoto
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan.,Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Fumihiko Hayakawa
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akihiko Tanizawa
- Department of Human Resource Development for Cancer, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Nobutaka Kiyokawa
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Hajime Hosoi
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| |
Collapse
|
10
|
Kanayama T, Imamura T, Kawabe Y, Osone S, Tahara J, Iwasaki F, Miyagawa N, Goto H, Imashuku S, Hosoi H. KMT2A-rearranged infantile acute myeloid leukemia masquerading as juvenile myelomonocytic leukemia. Int J Hematol 2018; 108:665-669. [DOI: 10.1007/s12185-018-2522-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 08/03/2018] [Accepted: 08/06/2018] [Indexed: 10/28/2022]
|
11
|
Kanayama T, Imamura T, Nakagawa N, Osone S, Hosoi H. Pediatric T-ALL complicated by irreversible nelarabine neurotoxicity. Pediatr Int 2017; 59:843-845. [PMID: 28745456 DOI: 10.1111/ped.13303] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Revised: 04/06/2017] [Accepted: 04/13/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Takuyo Kanayama
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Toshihiko Imamura
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Norio Nakagawa
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Shinya Osone
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hajime Hosoi
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| |
Collapse
|
12
|
Sakamoto K, Imamura T, Kanayama T, Yano M, Asai D, Deguchi T, Hashii Y, Tanizawa A, Ohshima Y, Kiyokawa N, Horibe K, Sato A. Ph-like acute lymphoblastic leukemia with a novel PAX5-KIDINS220 fusion transcript. Genes Chromosomes Cancer 2016; 56:278-284. [PMID: 27870151 DOI: 10.1002/gcc.22433] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 11/02/2016] [Accepted: 11/02/2016] [Indexed: 01/19/2023] Open
Abstract
Although "paired box 5" (PAX5)-related fusion genes are well documented in childhood B-cell precursor acute lymphoblastic leukemia (ALL), these types of fusion with the exception of PAX5-JAK2 are rarely seen in patients with gene expression profiles similar to those of BCR-ABL1 (Philadelphia)-positive ALL (Ph-like ALL). We report a novel fusion of the genes PAX5 and "kinase D-interacting substrate of 220 kDa" (KIDINS220, also known as ARMS) in a Ph-like ALL. As PAX5 is a master regulator of B-lymphocyte differentiation, PAX5 rearrangements induce a differentiation block in B lymphocytes. KIDINS220 is a mediator of multiple receptor signaling pathways, interacts with both T- and B-cell receptors, and is necessary for sustained extracellular signal-regulated kinase (ERK) signaling. Although functional studies are needed, the PAX5-KIDINS220 fusion protein might not only inhibit wild-type PAX5 function, but also promote sustained activation of the ERK signaling pathway through upregulation of KIDINS220. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Kenichi Sakamoto
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan
| | - Toshihiko Imamura
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan
| | - Takuyo Kanayama
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan
| | - Mio Yano
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Japan
| | - Daisuke Asai
- Department of Pediatrics, Japanese Red Cross Kyoto Daini Hospital, Japan
| | | | | | | | - Yusei Ohshima
- Department of Pediatrics, University of Fukui, Japan
| | - Nobutaka Kiyokawa
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Japan
| | - Keizo Horibe
- Clinical Research Center, National Hospital Organization Nagoya Medical Center, Japan
| | - Atsushi Sato
- Department of Hematology/Oncology, Miyagi Children's Hospital, Japan
| |
Collapse
|
13
|
Kanayama T, Mabuchi S, Shimura K, Hisamatsu T, Isohashi F, Hamasaki T, Kimura T. Prognostic factors for survival in cervical cancer patients with bone metastasis. EUR J GYNAECOL ONCOL 2015; 36:290-293. [PMID: 26189255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
PURPOSE To investigate the prognostic factors for survival in uterine cervical cancer patients who developed bone metastasis. MATERIALS AND METHODS Cervical cancer patients with bone metastasis who were treated at the present institute from April 1996 to September 2010 were identified from the authors' institutional tumor registries. Primary disease, follow-up, and recurrence data were collected and retrospectively reviewed. Univariate and multivariate analyses of prognostic factors for survival were performed. RESULTS A total of 37 patients that developed cervical cancer bone metastasis were included in the authors' database. The median survival time after recurrence was 12 months. Univariate analysis revealed that patients with a disease-free interval (DFI) of ten months or less achieved significantly shorter survival after bone metastasis detection than those with a DFI of 11 months or more (median: 8.5 months versus 17 months, p < 0.0001). Multivariate analysis also showed that DFI of ten months or less was a significant predictor of short survival (p = 0.0018). CONCLUSIONS The DFI was found to be independent prognostic factors for survival in cervical cancer patients who developed bone metastasis.
Collapse
|
14
|
Kakigano A, Mimura K, Kanagawa T, Nakayama M, Kanayama T, Fujita S, Kinugasa-Taniguchi Y, Endo M, Tomimatsu T, Kimura T. Imbalance of angiogenic factors and avascular edematous cystic villi in a trisomy 13 pregnancy: a case report. Placenta 2013; 34:628-30. [PMID: 23611482 DOI: 10.1016/j.placenta.2013.04.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 03/31/2013] [Accepted: 04/04/2013] [Indexed: 10/26/2022]
Abstract
The incidence of pre-eclampsia is significantly higher in trisomy 13 pregnancies than in normal pregnancies. Soluble fms-like tyrosine kinase-1 (sFlt-1), located on chromosome 13, is an anti-angiogenic molecule derived from the placenta and contributes to the pathogenesis of pre-eclampsia. Elevated sFlt-1 and reduced placental growth factor (PlGF) are associated with trisomy 13 pregnancies and may play a pathogenic role in the subsequent development of pre-eclampsia. Here we present a case of a trisomy 13 pregnancy without any signs of pre-eclampsia that showed alterations in circulating angiogenic factors and abnormal placental appearance. The placenta developed edematous changes and contained multiple small cysts. Histology of the placenta confirmed avascular edematous cystic villi and did not show the typical appearance of a partial mole or mesenchymal dysplasia. The sFlt-1/PlGF ratio in maternal serum (134) was much higher than that in gestational age-matched women who were normotensive (2.9-7.2; mean, 5.0). Immunostaining for Flt-1 and endoglin was more intense in our case compared with gestational age-matched controls, and at a similar level to a case of pre-eclampsia. Placental findings that showed avascular edematous cystic villi in our case may be associated with angiogenic imbalance involved in the pathogenesis of pre-eclampsia in trisomy 13 pregnancies.
Collapse
Affiliation(s)
- A Kakigano
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Tomimatsu T, Fujime M, Kanayama T, Mimura K, Koyama S, Kanagawa T, Kimura T. Maternal arterial stiffness in normotensive pregnant women who subsequently deliver babies that are small for gestational age. Eur J Obstet Gynecol Reprod Biol 2013; 169:24-7. [PMID: 23434326 DOI: 10.1016/j.ejogrb.2013.01.016] [Citation(s) in RCA: 14] [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] [Received: 03/13/2012] [Revised: 07/30/2012] [Accepted: 01/27/2013] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To assess the association between maternal arterial stiffness and delivery of a baby that is small for gestational age (SGA) in normotensive pregnant women. STUDY DESIGN Pulse wave analyses were performed to assess maternal arterial stiffness at 26-33 weeks of gestation in 40 normotensive women who subsequently delivered SGA babies (SGA group) and 111 normotensive women who delivered babies with normal growth (control group). RESULTS Central systolic pressure (CSP), augmentation index (AIx) and AIx at a heart rate of 75 beats/min (AIx-75) were significantly higher in the SGA group compared with the control group, but this was not the case for brachial systolic pressure, brachial diastolic pressure or brachial pulse pressure. Birth weight was significantly correlated with CSP (r=-0.26, p<0.01), AIx (r=-0.33, p<0.01) and AIx-75 (r=-0.27, p<0.01), but not with brachial systolic pressure, brachial diastolic pressure or brachial pulse pressure. CONCLUSION Increased arterial stiffness may be involved, in part, in the pathogenesis of SGA in normotensive women, suggesting an association between fetal growth and maternal endothelial function. Pulse wave analysis may be a clinically applicable method for assessment of maternal arterial stiffness, and may be more relevant to intrauterine fetal growth than conventional brachial blood pressure.
Collapse
Affiliation(s)
- T Tomimatsu
- Department of Obstetrics and Gynaecology, Osaka University Graduate School of Medicine, Osaka, Japan.
| | | | | | | | | | | | | |
Collapse
|
16
|
Robinson A, Palmer R, Tada T, Kanayama T, Shelley E, Preece JA. Fullerene Derivatives as Novel Resist Materials for Fabrication of MEMS Devices by Electron Beam Lithography. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-546-219] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractThe fabrication of MEMS and electronic devices relies heavily on lithography. We have explored the application of derivatives of C60, as high resolution, high etch durability resists. Spin coating was used to produce films of various methanofullerenes on silicon substrates, with thickness ranging from 20 to 200 nm. These films behave as effective high resolution negative tone electron beam resists allowing sub 20 nm patterning of silicon which compares favorably with other negative tone resists. Organic solvents such as monochlorobenzene and chloroform can be used to develop the exposed films. The films have sensitivities of 4 × 10−3 to 8 × 10−4 C/cm2 for 20 keV electrons, more than an order of magnitude higher than the sensitivity of C60,. The dry etch durabilities of these compounds are considerably higher than those of conventional resists. A silicon grid with hole depth 160 nm and wall thickness 20 nm has been fabricated to demonstrate the high resolution and high etch durability of these resists.
Collapse
|
17
|
Kadohira M, Stevenson MA, Kanayama T, Morris RS. Epidemiology of bovine spongiform encephalopathy in cattle in Hokkaido, Japan, between September 2001 and December 2006. Vet Rec 2008; 163:709-13. [DOI: 10.1136/vr.163.24.709] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- M. Kadohira
- Department of Food Production Science; Faculty of Agriculture; Obihiro University of Agriculture and Veterinary Medicine; Inada-cho Obihiro Hokkaido 080-8555 Japan
| | - M. A. Stevenson
- EpiCentre; Institute of Veterinary, Animal and Biomedical Sciences; Massey University; Private Bag 11-222 Palmerston North New Zealand
| | - T. Kanayama
- Food Safety Economics Laboratory; Graduate School of Agriculture and Animal and Food Hygiene; Obihiro University of Agriculture and Veterinary Medicine; Inada-cho Obihiro Hokkaido 080-8555 Japan
| | - R. S. Morris
- EpiCentre; Institute of Veterinary, Animal and Biomedical Sciences; Massey University; Private Bag 11-222 Palmerston North New Zealand
| |
Collapse
|
18
|
Hibi H, Kinoshita K, Kanayama T, Katagiri W, Yajima A, Yamada Y, Ueda M. O.188 Internal transport distraction for mandibular reconstruction. J Craniomaxillofac Surg 2008. [DOI: 10.1016/s1010-5182(08)71312-x] [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: 11/26/2022] Open
|
19
|
Shimokawa M, Nakatsuka A, Kanayama T, Nakayama N, Iishi K, Yoshiasa A. Atomic displacements of tetrahedral cations in garnets. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308084201] [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
|
Kanayama T, Minowa K, Inoue N, Yamaguchi T, Tamura T, Yoshida S, Kawasaki T. Comparison of phosphocreatine concentration in the human masseter and medial pterygoid muscles by 31P-CSI. J Oral Rehabil 2008. [DOI: 10.1111/j.1365-2842.2001.00777.x] [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: 11/27/2022]
|
21
|
Sakaguchi K, Kawasaki T, Nakagawa T, Araki O, Kanayama T, Kawashima T. Spaciostructural analyses of mandibular and perioral soft tissue movements during mastication. J Oral Rehabil 2008. [DOI: 10.1111/j.1365-2842.2001.00751.x] [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: 11/28/2022]
|
22
|
Aoki Y, Tsuchiya A, Kanayama T, Saha SR, Sugawara H, Sato H, Higemoto W, Koda A, Ohishi K, Nishiyama K, Kadono R. Time-reversal symmetry-breaking superconductivity in heavy-fermion PrOs4Sb12 detected by muon-spin relaxation. Phys Rev Lett 2003; 91:067003. [PMID: 12935103 DOI: 10.1103/physrevlett.91.067003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2003] [Indexed: 05/24/2023]
Abstract
We report on muon-spin relaxation measurements of the 4f(2)-based heavy-fermion superconductor filled-skutterudite Pr(Os4Sb12. The results reveal the spontaneous appearance of static internal magnetic fields below the superconducting transition temperature, providing unambiguous evidence for the breaking of time-reversal symmetry in the superconducting state. A discussion is made on which of the spin or orbital component of Cooper pairs carries a nonzero momentum.
Collapse
Affiliation(s)
- Y Aoki
- Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Abstract
This study used functional magnetic resonance images (fMRI) to examine brain activity during clenching, gum chewing, and tapping tasks. It has been considered difficult to obtain sufficient fMRI data during jaw movement because the head motion associated with the jaw movements creates artifacts on the images. To avoid these artifacts, larger pixels were used, thus allowing some head motion of the subjects, and data from subjects where the heads were evaluated to have moved more than 0.5 mm were discarded. Further, all pixels obtained by fMRI were evaluated and pixels positively synchronized with the task, which were considered to show brain activity, were selected. Sufficient fMRI data was obtained from 30 experiments, 10 sets for each task. During the clenching and tapping tasks, the activated pixels were in the sensory, motor and pre-motor cortexes, and in the sensory and motor cortexes but not in the pre-motor cortex during the gum chewing task. There appears to be no significant differences between right- and left-hemispheres. It is conceivable that there are differences between voluntary jaw movements (clenching and tapping tasks) and mastication (gum chewing task) concerning the control of jaw movements.
Collapse
Affiliation(s)
- T Tamura
- Department of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan.
| | | | | | | |
Collapse
|
24
|
Abstract
It has been considered difficult to obtain satisfactory functional magnetic resonance images (fMRI) during jaw movements because the head motion during jaw movements makes artefacts on the images. To avoid these artefacts, we chose clenching task and larger pixels to allow some head motion of the subjects. Further the study discarded all data from subjects whom the head was evaluated to move more than 0.3 mm. The study examined 10 healthy right-handed volunteers with echo-planar magnetic resonance (MR) imaging and functional MR signal intensity changes could be obtained in all subjects. However, in the analysis of each pixel of individuals, three different types of pixels were established. It was determined that the pixels that synchronized positively with the task on/off and where signal intensity increase was below 10% expressed the real brain activity. Pixels showing the real brain activity were found in the sensory, motor and pre-motor cortexes in both hemispheres in all subjects, and also in the insula region of two subjects. No pixels were found in the striatum and supplementary motor areas. From the above careful consideration and individual analysis of each pixel, it was concluded that brain activity during the clenching task could be obtained by fMRI.
Collapse
Affiliation(s)
- T Tamura
- Department of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Kita-ku, Sapporo, Japan.
| | | | | | | |
Collapse
|
25
|
Kanayama T, Minowa K, Inoue N, Yamaguchi T, Tamura T, Yoshida S, Kawasaki T. Comparison of phosphocreatine concentration in the human masseter and medial pterygoid muscles by 31P-CSI. J Oral Rehabil 2001; 28:1075-9. [PMID: 11722725 DOI: 10.1046/j.1365-2842.2001.00777.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 11/20/2022]
Abstract
The aim of this study is to compare phosphocreatine (PCr) concentrations of human masseter and medial pterygoid muscles by a recently developed localized magnetic resonance spectroscopy (MRS) method, chemical shift imaging (CSI). The characteristic spectra of phosphorous metabolites including PCr and beta-ATP from the superficial part of the masseter (SM) and the deep part of the masseter (DM) and the medial pterygoid muscles (MPt) from 11 volunteers, 20-27-year-old were obtained. The study clearly demonstrated higher PCr/beta-ATP in the SM and MPt than in the DM both in mean values (P < 0.01) and in individual subjects. The results indicate that SM and MPt are power producers. There were no significant differences in the mean values of the PCr/beta-ATP ratios in SM and MPt, however, the PCr/beta-ATP ratios varied individually and the subjects could be divided into three distinct groups: values of MPt higher than SM (group A, 4 subjects); values of MPt almost equal to SM (group B, 3 subjects); and values of MPt lower than SM (group C, 4 subjects). There appears to be a close relationship between the PCr content as determined in the groups here and occlusal guidance.
Collapse
Affiliation(s)
- T Kanayama
- Department of Prosthetic Dentistry I, Dental Hospital, Hokkaido University, Kita-ku, Sapporo, Japan.
| | | | | | | | | | | | | |
Collapse
|
26
|
Nakoji M, Kanayama T, Okino T, Takemoto Y. Chiral phosphine-free Pd-mediated asymmetric allylation of prochiral enolate with a chiral phase-transfer catalyst. Org Lett 2001; 3:3329-31. [PMID: 11594826 DOI: 10.1021/ol016567h] [Citation(s) in RCA: 159] [Impact Index Per Article: 6.9] [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: 11/28/2022]
Abstract
[reaction: see text]. A chiral phase-transfer catalyst has been applied to the asymmetric allylation of the tert-butyl glycinate-benzophenone Schiff base with various allylic acetates for the first time to give the allylated products in good yields and with comparable to higher enantioselectivity than for asymmetric alkylation at the same temperature (91-96% ee) without any chiral ligands for coordinating to the palladium.
Collapse
Affiliation(s)
- M Nakoji
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | | | | | | |
Collapse
|
27
|
Satoh K, Yamaguchi T, Komatsu K, Inoue N, Minowa K, Kanayama T, Yoshida S, Ohata N. Analyses of muscular activity, energy metabolism, and muscle fiber type composition in a patient with bilateral masseteric hypertrophy. Cranio 2001; 19:294-301. [PMID: 11725854 DOI: 10.1080/08869634.2001.11746181] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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: 10/21/2022]
Abstract
Hyperwork of the masseter muscles due to habitual parafunction is thought to induce masseteric hypertrophy (so called work hypertrophy). However, the causes underlying this disease are not yet fully understood. Recently, we had a patient with bilateral masseteric hypertrophy, and we performed a partial excision of the masseter muscles. In this patient's case, we examined muscular activity, energy metabolism, and fiber type composition of the masseter muscles using electromyograms (EMG), 31P-magnetic resonance spectroscopy (MRS), and enzyme-histochemistry. The EMG showed no hyperactivity, and the 31P-MRS showed normal energy spectral patterns and PCr contents of the masseter muscles. The fiber type composition, however, in the muscles in this case was very different from that in muscles with "work hypertrophy" and also that in normal masseter muscles: 1. Loss of type IIB fibers; 2. Increases in type IIA and in type IM & IIC fibers; and 3. Decrease in type I fibers. The findings suggest that this is not a case of work hypertrophy but a case of compensatory hypertrophy possibly due to a lack of high-tetanus-tension type IIB fibers.
Collapse
Affiliation(s)
- K Satoh
- Crown & Bridge Prosthodontics, Dept. of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Sakaguchi K, Kawasaki T, Nakagawa T, Araki O, Kanayama T, Kawashima T. Spaciostructural analyses of mandibular and perioral soft tissue movements during mastication. J Oral Rehabil 2001; 28:982-90. [PMID: 11737572 DOI: 10.1046/j.1365-2842.2001.00751.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/20/2022]
Abstract
We considered that elucidation of the movements of perioral soft tissues during mastication would be useful in evaluating masticatory movements. However, evaluation of movements specific to soft tissues is difficult because movements of the surface of the lower face during mastication include movements of the muscles of facial expression and mandibular movements. The aims of this study were to elucidate the influence of mandibular movements on perioral soft tissue movements during mastication using principal component analysis (PCA) and to abstract the component of movement specific to soft tissues in order to evaluate masticatory movements from the movements of perioral soft tissues. The subjects were 10 healthy persons with complete natural dentition. The experimental food used in this study was sufficiently softened chewing gum. The results of this study showed that the movements of mandibular and perioral soft tissue were closely related in the first and third PCs; in other words, the second PC was the component of movement specific to soft tissues. Thus, elucidation of the second PC is useful for evaluation of masticatory movements from movements of perioral soft tissues.
Collapse
Affiliation(s)
- K Sakaguchi
- Removable Prosthodontics, Department of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, N13 W7, Kita-Ku, Sapporo, Japan.
| | | | | | | | | | | |
Collapse
|
29
|
Abstract
Motor proteins are able to move protein filaments in vitro. However, useful work cannot be extracted from the existing in vitro systems because filament motions are in random directions on two-dimensional surfaces. We succeeded in restricting kinesin-driven movements of microtubules along linear tracks by using micrometer-scaled grooves lithographically fabricated on glass surfaces. We also accomplished the extraction of unidirectional movement from the bidirectional movements along the linear tracks by adding arrowhead patterns on the tracks. These "rectifiers" enabled us to construct microminiturized circulators in which populations of microtubules rotated in one direction, and to actively transport microtubules between two pools connected by arrowheaded tracks in the fields of micrometer scales.
Collapse
Affiliation(s)
- Y Hiratsuka
- Gene Discovery Research Center, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562, Japan
| | | | | | | | | |
Collapse
|
30
|
Abstract
The action and the effect of the newly synthesized compounds 4GBE43 [N-(1,2-diethyltetrahydro-1H-pyrazol-4-yl)-4-[(2E)-3,7-diethyl-2,6-octadienyl] oxybenzamide] and 2BBE43 [2-(benzyloxy)-N-(1,2-diethyltetrahydro-1H-pyrazol-4-yl)benzamide] against lipid peroxidation were studied. 4GBE43 and 2BBE43 quenched the ESR signal of diphenylpicrylhydrazyl (DPPH), suggesting that 4GBE43 and 2BBE43 act as scavengers of free radicals and that each compound quenched 6 free radical molecules. These compounds suppressed the oxidation of methyl linoleate emulsions and soybean phosphatidylcholine liposomes by a free radical initiator, suggesting that these compounds quench the lipid peroxyl radical. 4GBE43 and 2BBE43 also suppressed the spontaneous oxidation of rat brain homogenates. The inhibitory effect of 2BBE43 was of the same order of magnitude (IC50) as that of probucol. The IC50 of 4GBE43 was on the same order of magnitude as that of alpha-tocopherol. However, 4GBE43 at 10(-4)-10(-5) M completely inhibited peroxidation, showing it to be more effective than alpha-tocopherol. These results suggest that 4GBE43 and 2BBE43 act as antioxidants by quenching the lipid peroxyl radical.
Collapse
Affiliation(s)
- T Ezure
- Shiseido Pharmaceutical Research Laboratories, 2-12-1 Fukuura, Kanazawa-ku, 236-8643, Yokohama, Kanagawa, Japan.
| | | | | |
Collapse
|
31
|
Hiura H, Miyazaki T, Kanayama T. Formation of metal-encapsulating Si cage clusters. Phys Rev Lett 2001; 86:1733-1736. [PMID: 11290235 DOI: 10.1103/physrevlett.86.1733] [Citation(s) in RCA: 227] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2000] [Revised: 11/27/2000] [Indexed: 05/23/2023]
Abstract
We report the formation of a series of metal-containing hydrogenated silicon clusters using an ion trap. Mass analyses reveal that many types of transition metal ions M(+) ( M = Hf, Ta, W, Re, Ir, etc.) react with silane (SiH4) to form dehydrogenated MSi( +)(n) cluster ions ( n = 14, 13, 12, 11, 9, respectively) as an end product, indicating that the metal atom is endohedral and stabilizes the Si polyhedral cage. This finding is confirmed by our ab initio calculation that WSi12 is a W-encapsulating Si12 cage cluster, and is very stable owing to both the electronic and the geometrical shell closures.
Collapse
Affiliation(s)
- H Hiura
- Joint Research Center for Atom Technology--Angstrom Technology Partnership, Tsukuba, Japan.
| | | | | |
Collapse
|
32
|
Kanayama T, Minowa K, Inoue N, Yamaguchi T, Yoshida S, Kawasaki T. Regional differences of metabolism in human masseter muscle by two-dimensional 31P-chemical shift imaging. J Dent Res 2000; 79:85-9. [PMID: 10690665 DOI: 10.1177/00220345000790011501] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [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: 11/16/2022] Open
Abstract
Many reports have demonstrated significant region-dependent differences in the fiber-type composition of the human masseter muscle. Therefore, it is considered that there is intramuscular heterogeneity of metabolic activity in the muscle. The present study was carried out, with two-dimensional Chemical Shift Imaging, to detect differences between the deep and superficial parts of the human masseter muscle at rest. Masseter muscle from 11 volunteers, from 20 to 27 years old, was examined, and characteristic spectra of the inorganic phosphate (Pi), phosphocreatine (PCr), and alpha-, beta-, and gamma-adenosine triphosphate (ATP) from each part of the muscles were obtained. In this study, the deep and superficial parts of the masseter muscle were distinguished by the existence of aponeurosis. The Pi/PCr, PCr/beta-ATP, and Pi/beta-ATP ratios as well as the pH in the deep and superficial parts were calculated from the peak spectra. Compared with the deep part, the Pi/PCr of the superficial part was lower (p < 0.05) and the PCr/beta-ATP was higher (p < 0.01). The Pi/beta-ATP and pH showed no significant differences between the two parts. The results indicate that the superficial part of the masseter muscle contains more PCr than the deep part, and this may be related to functional differences between these two parts. In future examinations of the metabolic activity of the human masseter muscle, the deep and superficial parts must be measured separately.
Collapse
Affiliation(s)
- T Kanayama
- Department of Prosthetic Dentistry I, School of Dentistry, Hokkaido University, Sapporo, Japan.
| | | | | | | | | | | |
Collapse
|
33
|
Robinson A, Palmer R, Tada T, Kanayama T, Shelley E, Philp D, Preece J. Exposure mechanism of fullerene derivative electron beam resists. Chem Phys Lett 1999. [DOI: 10.1016/s0009-2614(99)00871-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
34
|
Mabuchi K, Obara T, Ikegami K, Yamaguchi T, Kanayama T. Molecular weight independence of the effect of additive hyaluronic acid on the lubricating characteristics in synovial joints with experimental deterioration. Clin Biomech (Bristol, Avon) 1999; 14:352-6. [PMID: 10521613 DOI: 10.1016/s0268-0033(98)00084-9] [Citation(s) in RCA: 35] [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: 02/07/2023]
Abstract
OBJECTIVE To assess the molecular weight dependence of the lubricating characteristics of additive hyaluronic acid in animal joints with experimental deterioration. DESIGN An experimental study in rabbits stifles in vitro. BACKGROUND Hyaluronic acid is used as a drug for osteoarthritis. However, the molecular weight dependence of the effect of hyaluronic acid has been unclear. METHODS Using a robotic arm under force-control, frictional coefficients were measured in fourteen rabbit stifles. The experimental conditions examined were: (1) intact joint surfaces; (2) after the joint surfaces were washed with physiological saline; (3) after the addition of 1% hyaluronic acid solution with a molecular weight of one million daltons and two million daltons, respectively. RESULTS The increased frictional coefficient produced by washing with saline was decreased significantly by the addition of hyaluronic acid to the joint surfaces. This effect was observed regardless of the molecular weight of the hyaluronic acid. CONCLUSION The lubricating characteristics of hyaluronic acid in synovial joints do not change with molecular weight. RELEVANCE Hyaluronic acid solution is used clinically for the treatment of osteoarthritis. In the present study, the molecular weight dependency of the lubricating characteristics of hyaluronic acid was tested using the friction in synovial joints.
Collapse
Affiliation(s)
- K Mabuchi
- Department of Biomedical Engineering, School of Allied Health Sciences, Kitasato University, Sagamihara, Kanagaw, Japan.
| | | | | | | | | |
Collapse
|
35
|
Abstract
BACKGROUND/AIMS The biochemical basis for the development of subepithelial opacity of the cornea after excimer laser keratectomy has yet to be fully defined. The aim of this study was to evaluate the alterations of glycosaminoglycans (GAGs) after excimer laser keratectomy. METHODS Rabbit corneas were harvested on days 5, 10, 20, and 30 after excimer laser photoablation. The amount of main disaccharide units was determined by high performance liquid chromatography (HPLC). In addition, immunohistochemical studies were performed on corneal sections 20 days after the ablation. RESULTS The concentrations of DeltaDi-0S at 5 and 10 days were significantly lower than before the ablation. DeltaDi-6S showed a significant increase 5 days after the ablation but DeltaDi-4S did not show any significant change. There was a significant increase in DeltaDi-HA at 20 and 30 days after ablation. In immunohistochemistry, the positive staining for DeltaDi-6S and hyaluronic acid was observed in the subepithelial region. These immunohistochemical results were well correlated with the HPLC findings. CONCLUSIONS The increase in chondroitin-6 sulphate and hyaluronic acid may be related to corneal subepithelial opacity after excimer laser keratectomy.
Collapse
Affiliation(s)
- T Kato
- Department of Ophthalmology, Juntendo University, Tokyo, Japan
| | | | | | | | | | | |
Collapse
|
36
|
Robinson A, Palmer R, Tada T, Kanayama T, Preece J, Philp D, Jonas U, Deiderich F. Electron beam induced fragmentation of fullerene derivatives. Chem Phys Lett 1998. [DOI: 10.1016/s0009-2614(98)00455-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
37
|
Kanayama T, Kakihara N, Sato S, Adachi A, Tazaki N, Kida T, Igarashi S, Yasuda M. [Long-term complete response in two cases of liver metastases from rectal and gastric cancer treated with intra-arterial infusion chemotherapy of leucovorin and 5-fluorouracil]. Gan To Kagaku Ryoho 1997; 24:2147-50. [PMID: 9388527] [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: 02/05/2023]
Abstract
Intra-arterial infusion chemotherapy combined with leucovorin (LV) and 5-fluorouracil (5-FU) was performed in two patients with multiple metastases from rectal and gastric cancer. In each patient LV 45 mg was infused as a bolus just before and after 5-FU 1,000 mg/4 hrs administration. Thereafter 5-FU dose was decreased gradually. This regimen was principally repeated weekly on an outpatient basis. In both patients PR was detectable 3 and 4 months after the beginning of chemotherapy, and CR was obtained in 21 and 6 months, respectively. Neither patient showed any signs of recurrence and are in good health 35 and 30 months after initiation of chemotherapy. These findings suggest that our protocol has an excellent anti-tumor effect and improves the QOL in some patients for a long time.
Collapse
Affiliation(s)
- T Kanayama
- Dept. of Surgery, Sekitetsukai Tanabe Central Hospital
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Kato S, Nakagaki H, Toyama Y, Kanayama T, Arai M, Togari A, Matsumoto S, Strong M, Robinson C. Fluoride profiles in the cementum and root dentine of human permanent anterior teeth extracted from adult residents in a naturally fluoridated and a non-fluoridated area. Gerodontology 1997; 14:1-8. [PMID: 9610297 DOI: 10.1111/j.1741-2358.1997.00001.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [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: 11/30/2022]
Abstract
OBJECTIVES To determine the effect of water fluoride concentration on the fluoride profile across the entire thickness of the cementum and root dentine of human permanent anterior teeth in adults. SUBJECTS Twenty-eight human permanent anterior teeth from individuals aged from 30 to over 60 years were studied. SETTING Teeth were obtained from a natural high-fluoride area (West Hartle-pool, UK; 1.0-1.3 ppm F in drinking water, WHP) and the other from a non-fluoridated naturally low fluoride area (Leeds, UK; 0.1 ppm F in drinking water, LDS). DESIGN Cementum and root dentine were sampled using an abrasive micro-sampling technique from the cementum surface to the pulpal surface of root dentine. RESULTS Fluoride concentration was higher in tooth roots (the cementum and dentine) taken from the naturally fluoridated area (WHP) than from the non-fluoridated area (LDS). Age and average fluoride concentration showed a positive correlation in WHP dentine, middle region of the root (r = 0.78, P < 0.001) and in the apical region of the root (r = 0.61, P < 0.05). WHP cementum had the strongest fluoride concentration correlation with age in the cervical region of the root (r = 0.67, P < 0.01). An analysis of variance (ANOVA) showed that the area (water fluoride content), age and number of years lived in the area combined with total age were significant. CONCLUSIONS The fluoride content of cementum and root dentine in adult residents is related to fluoride content in drinking water.
Collapse
Affiliation(s)
- S Kato
- Department of Preventive Dentistry and Dental Public Health, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Majima T, Shimizu H, Tomie T, Kanayama T, Yamada M. [X-ray microscope]. Tanpakushitsu Kakusan Koso 1997; 42:1149-50. [PMID: 9170941] [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: 02/04/2023]
Affiliation(s)
- T Majima
- Biophysics Section, Electrotechnical Laboratory, Tsukuba, Japan
| | | | | | | | | |
Collapse
|
40
|
Nakagawa H, Yamada M, Hagiwara Y, Kanayama T, Moriuchi S. [Effects of biochemical modulation chemotherapy with CDDP and 5-FU on metastatic brain tumor from lung cancer]. No Shinkei Geka 1997; 25:215-23. [PMID: 9058428] [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: 02/03/2023]
Abstract
Fourteen cases of metastatic brain tumors from lung cancer underwent biochemical modulation chemotherapy with daily administration of small doses of CDDP (5 or 10 mg/day) and continuous infusion of 5-FU (300 mg/day) for three tow six weeks. All patients with metastatic brain tumors also underwent a total of 30 Gy of whole brain irradiation therapy. Of eleven patients who had metastatic brain tumors when chemotherapy started, complete and partial responses were shown in two patients each (36% response rate). Moreover, only four of twelve patients with extracranial lesions responded (33% response rate). Abnormal levels of tumor marker were improved in only three of 10 evaluable patients (30% response rate). Side effects of this chemotherapy included various WHO grades of bone marrow suppression as well as nausea and vomiting in 13 of 14 patients. Loss of appetite persisted for two months. Parkinsonism was also noted in three patients as an additional side effect. Mean survival time was 9.4 months, while 4 patients survived longer than one year. Data showing a low response rate, persistent loss of appetite and longer admission period were considered less favorable than those of other chemotherapeutic regimens.
Collapse
Affiliation(s)
- H Nakagawa
- Department of Neurosurgery, Osaka Medical Center for Cancer & Cardiovascular Diseases (The Center for Adult Diseases, Osaka)
| | | | | | | | | |
Collapse
|
41
|
Yoshida Y, Misaki T, Takada K, Kyoda N, Kunimatsu T, Kanayama T. [Intravenous anesthesia by continuous administration of midazolam and fentanyl]. Masui 1997; 46:326-30. [PMID: 9095603] [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: 02/04/2023]
Abstract
We examined the amount and method of administration of midazolam and fentanyl for intravenous anesthesia. Intravenous anesthesia was induced by intravenous administration of fentanyl 0.2-0.3 mg, followed by a minimal sleeping-inducing dose of midazolam, and then an additional 0.2 mg of fentanyl before starting the operation. To maintain anesthesia, a half dose of the first dose of midazolam was administered every hour, and a continuous intravenous injection of fentanyl at 0.08 microgram-1. kg-1.min-1 was also performed. It is suggested that these doses are the most suitable for obviating the use of antagonist. Also, by using a continuous administration, the dose of fentanyl can be reduced, and it is possible to stabilize circulation. Without the use of nitrous oxide during intravenous anesthesia, it is necessary to double the dose of fentanyl administered.
Collapse
Affiliation(s)
- Y Yoshida
- Department of Dental Anesthesiology, Nihon University School of Densitry, Tokyo
| | | | | | | | | | | |
Collapse
|
42
|
Abstract
Our seven-storey laboratory animal facility was damaged during the 1995 earthquake of magnitude 7.2. The seismic intensity experienced at our facility was estimated to be around 5 on the Japanese version of the Richter scale (a very strong shock). However, no damage was sustained to the water, gas or electricity supplies in many of the offices, the upper drawers of the steel cabinets fell to the floor. In the animal-rooms, while the floor-fixed cage-racks were hardly damaged, most of the movable cage-racks were dislodged by the shocks. We describe here our countermeasures, including those taken prior to the earthquake.
Collapse
Affiliation(s)
- M Takeshita
- Marugo Research Service, Tanabe Seiyaku Co., Ltd., Osaka, Japan
| | | | | | | |
Collapse
|
43
|
Matsubara S, Yamaji Y, Fujita T, Kanayama T, Yamadori I, Sato M, Fujita J, Shiotani T, Takahara J. Cancer-associated retinopathy syndrome: a case of small cell lung cancer expressing recoverin immunoreactivity. Lung Cancer 1996; 14:265-71. [PMID: 8794409 DOI: 10.1016/0169-5002(96)00552-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [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: 02/02/2023]
Abstract
Cancer-associated retinopathy (CAR) syndrome is a rare paraneoplastic neuropathy syndrome often found in patients with small cell lung cancer (SCLC). Serological studies have indicated that the process could include autoimmune reactions directing retinal antigens. Recently, the CAR antigen was identified as a photoreceptor protein, recoverin, by screening retinal proteins using the CAR patient's serum. The present case of SCLC showed rapidly deteriorated bilateral visual acuity lacking the inflammatory findings at the retina which were compatible with CAR. The immunohistochemical study revealed that the cancer cells expressed recoverin or recoverin-like immunoreactivity. This is the first observation in CAR syndrome. The presence of recoverin or recoverin-like immunoreactivity in SCLC with CAR syndrome supports the hypothesis that the cancer-retina immunologic cross-reaction contributes to visual loss in this syndrome.
Collapse
Affiliation(s)
- S Matsubara
- First Department of Internal Medicine, Kagawa Medical School, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Nakagawa H, Fujita T, Kubo S, Tokiyoshi K, Yamada M, Kanayama T, Hagiwara Y, Nakanomyo H, Hiraoka M. Difference in CDDP penetration into CSF between selective intraarterial chemotherapy in patients with malignant glioma and intravenous or intracarotid administration in patients with metastatic brain tumor. Cancer Chemother Pharmacol 1996; 37:317-26. [PMID: 8548876 DOI: 10.1007/s002800050391] [Citation(s) in RCA: 29] [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: 01/31/2023]
Abstract
Platinum (Pt) levels in plasma and cerebrospinal fluid (CSF) in patients with malignant glioma were determined after initiation of selective intraarterial chemotherapy with a combination of VP-16 (etoposide) and CDDP (cisplatin), and were compared with the CSF Pt levels in patients with metastatic brain tumors after intravenous or intracarotid administration of VP-16 and CDDP. CSF Pt levels were also compared for various administration routes, doses, CSF sampling routes and blood-CSF barriers in metastatic brain tumor. Changes in the blood-CSF barrier to CDDP during treatment in a patient with meningeal lymphoma and in a patient recovering from surgical removal of a metastatic brain tumor were also examined by periodic administration of CDDP. All CSF samples were taken through Ommaya reserviors placed in the anterior horn of the lateral ventricle or the postoperative cavity. The mean peak CSF/plasma total Pt ratio (T/T ratio) and the mean CSF total Pt/plasma ultrafiltrable Pt ratio (T/U ratio) were highest (15.0% and 24.4%, respectively) following selective intraarterial infusion of CDDP in patients with malignant glioma, followed by intravenous infusion in meningeal carcinomatosis (11.5% and 18.9%), intracarotid administration (5.4% and 8.7%) and intravenous infusion (60 mg/m2 2.5% and 100 mg/m2 2.9%; and 60 mg/m2 3.5% and 100 mg/m2 7.7%) in patients with the solid type of metastatic brain tumor. In CSF obtained from the postoperative cavity in cases of metastatic brain tumor, T/T and T/U ratios were extremely high (40.9% and 62.4%). However, the CSF Pt level even after selective intraarterial administration of CDDP in malignant glioma was 0.51-1.64 micrograms/ml total Pt and 0.43-1.08 micrograms/ml ultrafiltrable Pt. Even the CSF level obtained from the postoperative cavity was 1.0-4.7 micrograms/ml total Pt. These low levels of total and ultrafiltrable Pt are considered not to be cytotoxic to disseminated cells in the CSF space and to normal brain cells. As for changes in the blood-CSF barrier, repeated administration of CDDP showed that the rate of entry of Pt into the CSF decreased in parallel with improvements apparent on CT scans in the patient with meningeal lymphoma, and also showed that the blood-CSF barrier to Pt was gradually repaired after the metastatic brain tumor had been removed.
Collapse
Affiliation(s)
- H Nakagawa
- Department of Neurosurgery, Center for Adult Diseases, Osaka, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Maruyama S, Nakagaki H, Hanaki M, Morita I, Ito T, Toyama Y, Kanayama T, Ohno N, Kurosu K. Glucose retention on the surfaces of primary teeth in 3- and 4-yr-old children. Arch Oral Biol 1995; 40:783-7. [PMID: 8651882 DOI: 10.1016/0003-9969(95)00054-s] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [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: 02/01/2023]
Abstract
Glucose retention was determined in 38 kindergarten children ages 3-4 yr. The children rinsed their mouths with 10 ml of a 0.5 mol/l glucose solution for 15 s and then spat out. Three minutes after they put the solution in their mouths, a small paper-point was used to collect samples of saliva from the labial and buccal surfaces of the maxillary and mandibular primary teeth. The concentration of glucose in the small amount of saliva collected was measured with an immobilized enzyme system. Glucose retention was highest on the maxillary central primary incisor, second highest on the maxillary first primary molar and third highest on the maxillary lateral primary incisor. An intermediate value was seen on the maxillary and mandibular second primary molars, the mandibular first primary molar and the maxillary primary canine. A lower value was observed on the mandibular primary canine and the lowest on the mandibular incisors. It was concluded that there were site differences in glucose retention on primary teeth of 3- and 4-yr-old children.
Collapse
Affiliation(s)
- S Maruyama
- Department of Preventive Dentistry and Dental Public Health, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Kondo K, Nakagaki H, Kato K, Narita N, Ito T, Kanayama T, Robinson C. Fluoride distribution of rat molar cementum in relation to age and fluoride levels in the drinking water. Caries Res 1995; 29:218-22. [PMID: 7621498 DOI: 10.1159/000262072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 01/26/2023] Open
Abstract
The present study was undertaken to determine the fluoride distribution profile in rat molar cementum with age in relation to fluoride in drinking water. Fifty-four female Wistar rats were used for the experiment. Before the experiment 6 rats were killed under chloroform anesthesia at 4 weeks of age as controls. The remaining 48 rats were divided into two groups: a control group given distilled water and the other group given water containing 100 ppm fluoride ad libitum. Six rats from each group were killed at the ages of 6, 12, 24, and 48 weeks. The fluoride distribution in the molar cementum was analyzed from the surface to the cementodentinal junction by abrasive microsampling. The fluoride concentrations in molar cementum from control rats on distilled water remained relatively constant until 24 weeks. A small increase then occurred between 24 and 48 weeks. The fluoride concentration in cementum from rats drinking water containing 100 ppm fluoride increased markedly with age, both in outer and inner regions of the molar cementum for all rats. On the other hand, the fluoride concentration in the cementum of older rats drinking water with 100 ppm fluoride was significantly higher in the outer than in the inner region of the cementum. It was concluded that the fluoride distribution in rat molar cementum may increase throughout life in relation to the fluoride level in the drinking water.
Collapse
Affiliation(s)
- K Kondo
- Department of Preventive Dentistry and Dental Public Health, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan
| | | | | | | | | | | | | |
Collapse
|
47
|
Murai T, Koshikawa N, Kanayama T, Takada K, Tomiyama K, Kobayashi M. Opposite effects of midazolam and beta-carboline-3-carboxylate ethyl ester on the release of dopamine from rat nucleus accumbens measured by in vivo microdialysis. Eur J Pharmacol 1994; 261:65-71. [PMID: 8001655 DOI: 10.1016/0014-2999(94)90301-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.7] [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: 01/28/2023]
Abstract
This report describes the effects of midazolam and beta-carboline-3-carboxylate ethyl ester (beta-CCE) on extracellular concentrations of dopamine in the nucleus accumbens of freely moving rats measured by in vivo microdialysis. The two compounds had opposite effects, midazolam (0.075 and 0.15 mg/kg i.v.) dose dependently decreasing, and beta-CCE (3 and 10 mg/kg i.p.) dose dependently increasing, dialysate concentrations of dopamine. Flumazenil (6 micrograms/kg i.v.) did not affect the efflux of dopamine but it prevented the effects of both midazolam and beta-CCE on dopamine efflux. N6-Cyclohexyladenosine (0.1, and 1 mg/kg i.p.), a selective adenosine A1 agonist, dose dependently increased the efflux of dopamine. This effect was blocked by 8-cyclopentyl-1,3-dipropylxanthine (25 mg/kg i.p.), a selective adenosine A1 receptor antagonist, a dose which given alone did not affect dopamine efflux; responses to midazolam were not affected. 3,7-Dimethyl-1-propargylxanthine (1 and 3 mg/kg i.p.), a selective adenosine A2 receptor antagonist, did not mimic the effects of beta-CCE. The results suggest that midazolam and beta-CCE modulate dopamine release in the nucleus accumbens by an action at the benzodiazepine binding site associated with the GABAA receptor complex.
Collapse
Affiliation(s)
- T Murai
- Department of Dental Anesthesiology, Nihon University School of Dentistry, Tokyo, Japan
| | | | | | | | | | | |
Collapse
|
48
|
Nakagawa H, Kobayashi H, Koezuka M, Yamada M, Miyawaki Y, Tokiyoshi K, Kanayama T, Hagiwara Y, Tsuruzono K. [Chemotherapy for metastatic brain tumors with CDDP and other agents: correlation between chemotherapeutic effects and the results of in vitro chemosensitivity tests using collagen gel-embedded culture combined with computerized image analysis in metastatic brain tumors]. No Shinkei Geka 1994; 22:517-23. [PMID: 8015671] [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: 01/28/2023]
Abstract
Chemotherapy with CDDP and/or other agents was performed in 15 patients after removal of metastatic brain tumors. A chemosensitivity test using a system of collagen gel-embedded culture and computerized image analysis was performed on the tumors from these patients. The clinical usefulness of the chemosensitivity test was evaluated by comparing chemotherapeutic effects with the results of the test. The rates of correlation of the chemosensitivity test with clinical response on brain MRI was 80%, and that of the chemosensitivity test with clinical response in tumor markers or on primary tumors was 75%. This observation suggests that the chemosensitivity test using collagen gel-embedded culture and computerized image analysis is useful in determining optimal chemotherapy for metastatic brain tumors. In ten multiple metastatic brain tumors, three complete responses, two partial responses, one minor response and four non-responses were observed on MRI. Only one case showed a false negative result on the chemosensitivity test and showed partial response. This result also indicates the effectiveness of chemotherapy based on chemosensitivity testing.
Collapse
Affiliation(s)
- H Nakagawa
- Department of Neurosurgery, Center for Adult Diseases, Osaka
| | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Nakagawa H, Yamada M, Kanayama T, Tsuruzono K, Miyawaki Y, Tokiyoshi K, Hagiwara Y, Hayakawa T. Myelin basic protein in the cerebrospinal fluid of patients with brain tumors. Neurosurgery 1994; 34:825-33; discussion 833. [PMID: 7519757 DOI: 10.1227/00006123-199405000-00006] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [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: 01/25/2023] Open
Abstract
We measured the level of myelin basic protein (MBP) in the cerebrospinal fluid (CSF) of patients with various kinds of tumors, including malignant tumors, using radioimmunoassay. The CSF had been obtained by lumbar puncture through an Ommaya reservoir or a shunt device placed in the lateral ventricle. The level of MBP was high (> 4 ng/ml) in the patients with meningeal dissemination of malignant tumors, but in those who showed a good response to chemotherapy and/or radiation, it decreased or returned to the normal level, with improvement on the computed tomography and magnetic resonance imaging, cytological, general CSF, and neurological findings. Of seven malignant gliomas without CSF dissemination, six showed an elevated level of MBP before selective intra-arterial chemotherapy with a combination of etoposide and cisplatin administered via a microcatheter placed at A1, M1, P1-P2, and the basilar top. All CSF specimens obtained during the period of the intra-arterial chemotherapy showed an abnormally high (> 4 ng/ml) level of MBP that exceeded the prechemotherapy level. The MBP level decreased or returned to normal in the patients with a good response to chemotherapy after intra-arterial chemotherapy. In some patients with multiple metastatic brain tumors, the MBP level was elevated before treatment and returned to normal after treatment (surgical removal, chemotherapy, and/or irradiation) in all except one. Thus, there was a clear correlation between the timing of treatment and changes in imaging studies and MBP levels.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
MESH Headings
- Adult
- Aged
- Astrocytoma/cerebrospinal fluid
- Astrocytoma/diagnosis
- Astrocytoma/secondary
- Astrocytoma/therapy
- Biomarkers, Tumor/cerebrospinal fluid
- Brain Damage, Chronic/cerebrospinal fluid
- Brain Damage, Chronic/diagnosis
- Brain Damage, Chronic/therapy
- Brain Neoplasms/cerebrospinal fluid
- Brain Neoplasms/diagnosis
- Brain Neoplasms/secondary
- Brain Neoplasms/therapy
- Chemotherapy, Adjuvant
- Cisplatin/administration & dosage
- Cisplatin/adverse effects
- Combined Modality Therapy
- Cranial Irradiation
- Etoposide/administration & dosage
- Etoposide/adverse effects
- Female
- Follow-Up Studies
- Glioblastoma/cerebrospinal fluid
- Glioblastoma/diagnosis
- Glioblastoma/secondary
- Glioblastoma/therapy
- Humans
- Infusions, Intra-Arterial
- Lymphoma, B-Cell/cerebrospinal fluid
- Lymphoma, B-Cell/diagnosis
- Lymphoma, B-Cell/therapy
- Lymphoma, Large B-Cell, Diffuse/cerebrospinal fluid
- Lymphoma, Large B-Cell, Diffuse/diagnosis
- Lymphoma, Large B-Cell, Diffuse/therapy
- Male
- Meningeal Neoplasms/cerebrospinal fluid
- Meningeal Neoplasms/diagnosis
- Meningeal Neoplasms/secondary
- Meningeal Neoplasms/therapy
- Meningioma/cerebrospinal fluid
- Meningioma/diagnosis
- Meningioma/secondary
- Meningioma/therapy
- Middle Aged
- Myelin Basic Protein/cerebrospinal fluid
- Treatment Outcome
Collapse
Affiliation(s)
- H Nakagawa
- Department of Neurosurgery, Center for Adult Diseases, Osaka, Japan
| | | | | | | | | | | | | | | |
Collapse
|
50
|
Nakagawa H, Fujita T, Tsuruzono K, Kubo S, Yamada M, Miyawaki Y, Tokiyoshi K, Kanayama T, Hasegawa H, Koshino K. [Myelin basic protein in the cerebrospinal fluid of patients with neurological disease: especially with malignant brain tumors]. No Shinkei Geka 1994; 22:111-8. [PMID: 7509461] [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: 01/25/2023]
Abstract
Myelin basic protein (MBP) in the cerebrospinal fluid (CSF) of patients with brain tumors and other neurological diseases was measured before, during and after various treatments such as surgery, chemotherapy and irradiation. We assessed the significance of changes in the MBP levels during the course of treatment, and speculate on what the elevated level of MBP in brain tumor patients indicates. In meningeal dissemination of malignant tumors, meningeal carcinomatosis from cancer of the systemic organ showed the highest level of MBP followed by meningeal gliomatosis and meningeal lymphoma. Meningeal carcinomatosis and meningeal lymphoma, which have responded to chemotherapy, showed normal levels of MBP after chemotherapy. Six of eight patients with newly diagnosed malignant glioma showed moderate to high levels of MBP (range 4.6-35.5ng/ml) just before intraarterial chemotherapy with VP-16 and CDDP. The level increased in five patients during the course of chemotherapy and then decreased in relation to the degree of tumor reduction by chemotherapy. In the solid type of metastatic brain tumor, five of seven patients with multiple tumors showed high levels of MBP and these levels also returned to normal after treatment in four patients. As for the influence of irradiation, levels of MBP did not increase after irradiation except in three patients who developed radiation necrosis, local extensive edema or atrophic change. In other brain tumors, levels of MBP were high in a patient with a large meningioma with very extensive edema and during an unstable postoperative condition after total removal of a large craniopharyngioma.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
Affiliation(s)
- H Nakagawa
- Department of Neurosurgery, Center for Adult Diseases, Osaka
| | | | | | | | | | | | | | | | | | | |
Collapse
|