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Komuro Y, Oyama K, Hu L, Sakatani K. Relationship Between Cognitive Dysfunction and Systemic Metabolic Disorders in Elderly: Dementia Might be a Systematic Disease. Adv Exp Med Biol 2020; 1232:91-97. [PMID: 31893399 DOI: 10.1007/978-3-030-34461-0_13] [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] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
Vascular cognitive impairment (VCI) plays an important role in dementia in elderly people, and refers to the contribution of vascular pathology to the entire spectrum of cognitive disorders, ranging from mild cognitive impairment to severe dementia, as well as the pathological spectrum, from 'pure' Alzheimer disease through degrees of vascular comorbidity to 'pure' vascular dementia. In the present study, we investigated the relationship between cognitive dysfunction and systemic metabolic disorders, by employing deep learning (DL). We studied 202 patients (73.4 ± 13.0 years), 94.6% of whom were undergoing treatment for lifestyle diseases, and 68.8% of whom had a history of cerebrovascular disorder. We evaluated cognitive dysfunction by performing a Mini Mental State Examination (MMSE). We performed general blood examination, including Complete Blood Count and Basic Metabolic Panel, and measured cerebral blood oxygenation in the prefrontal cortex (PFC) using time-resolved near infrared spectroscopy (TNIRS). We then used deep neural networks to assess the MMSE scores of the subjects based on the TNIRS parameters and the blood examination data, independently. Next, we compared predicted MMSE scores based on the TNIRS and the blood examination. There was a significant positive correlation between the TNIRS parameters and the blood examination data (r = 0.6, p < 0.01). These observations suggest that cognitive dysfunction in patients with VCI may be caused by combinations of systemic metabolic disorders such as energy and oxygen metabolisms and cerebral circulatory disturbance due to arteriosclerosis resulting from lifestyle-related diseases.
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Affiliation(s)
- Y Komuro
- Department of Electrical and Electronic Engineering, NEWCAT Research Institute, Koriyama, Japan
| | - K Oyama
- Department of Computer Science, Nihon University, Koriyama, Japan
| | - L Hu
- Department of Electrical and Electronic Engineering, NEWCAT Research Institute, Koriyama, Japan
| | - K Sakatani
- Department of Human and Engineered Environmental Studies, Universal Sports Health Science Laboratory, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha, Kashiwa-shi, Chiba, Japan.
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2
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Komuro Y, Sato Y, Lin L, Tang Z, Hu L, Sakatani K. Reliability of Wearable Two Channel CW-NIRS in Measurements of Brain Function. Adv Exp Med Biol 2018; 1072:301-305. [PMID: 30178362 DOI: 10.1007/978-3-319-91287-5_48] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Multi-channel NIRS, so-called optical topography (OT), allows functional mapping of the cortex; however, it takes a long time to set optodes on the head and is relatively expensive. Thus, OT is not suitable as a screening test of brain disorders evaluating many subjects. Recently, a wearable two-channel continuous wave NIRS (CW-NIRS) device has been developed. Such a simple NIRS device may be applicable as a screening test of brain disorders; however, its reliability in measurements of brain function is not yet clear. Here, we tested a two-channel CW-NIRS, which employs single LED (800 nm) for measurement of total hemoglobin (t-Hb) changes. We measured t-Hb changes in the bilateral prefrontal cortex (PFC) during mental arithmetic tasks, employing the CW-NIRS and time-resolve NIRS (TNIRS). The left-right asymmetry of the PFC activity was evaluated by calculating the laterality index (LI; (R-L)/(R + L) of t-Hb), which reflects mental stress. The interval between CW-NIRS and TNIRS measurements was 1-13 days. A significant positive correlation was observed between LI measured by CW-NIRS and TNIRS. These results suggest the reliability of the simple CW-NIRS, and it may be applicable to prevent stress-induced various diseases. Finally, it should be emphasized that the left-right asymmetry of PFC activity is relatively stable.
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Affiliation(s)
- Y Komuro
- Department of Electrical and Electronic Engineering, NEWCAT Research Institute, College of Engineering, Fukushima, Japan
| | - Y Sato
- Department of Electrical and Electronic Engineering, NEWCAT Research Institute, College of Engineering, Fukushima, Japan
| | - L Lin
- Department of Electrical and Electronic Engineering, NEWCAT Research Institute, College of Engineering, Fukushima, Japan
| | - Z Tang
- Department of Electrical and Electronic Engineering, NEWCAT Research Institute, College of Engineering, Fukushima, Japan
| | - L Hu
- Department of Electrical and Electronic Engineering, NEWCAT Research Institute, College of Engineering, Fukushima, Japan
| | - K Sakatani
- Department of Electrical and Electronic Engineering, NEWCAT Research Institute, College of Engineering, Fukushima, Japan. .,Department of Neurological Surgery, School of Medicine, Nihon University, Tokyo, Japan.
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Kumada T, Komuro Y, Li Y, Hu T, Wang Z, Littner Y, Komuro H. Inhibition of cerebellar granule cell turning by alcohol. Neuroscience 2010; 170:1328-44. [PMID: 20691765 PMCID: PMC2949482 DOI: 10.1016/j.neuroscience.2010.07.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2010] [Revised: 06/30/2010] [Accepted: 07/29/2010] [Indexed: 01/24/2023]
Abstract
Ectopic neurons are often found in the brains of fetal alcohol spectrum disorders (FASD) and fetal alcohol syndrome (FAS) patients, suggesting that alcohol exposure impairs neuronal cell migration. Although it has been reported that alcohol decreases the speed of neuronal cell migration, little is known about whether alcohol also affects the turning of neurons. Here we show that ethanol exposure inhibits the turning of cerebellar granule cells in vivo and in vitro. First, in vivo studies using P10 mice demonstrated that a single intraperitoneal injection of ethanol not only reduces the number of turning granule cells but also alters the mode of turning at the EGL-ML border of the cerebellum. Second, in vitro analysis using microexplant cultures of P0-P3 mouse cerebella revealed that ethanol directly reduces the frequency of spontaneous granule cell turning in a dose-dependent manner. Third, the action of ethanol on the frequency of granule cell turning was significantly ameliorated by stimulating Ca(2+) and cGMP signaling or by inhibiting cAMP signaling. Taken together, these results indicate that ethanol affects the frequency and mode of cerebellar granule cell turning through alteration of the Ca(2+) and cyclic nucleotide signaling pathways, suggesting that the abnormal allocation of neurons found in the brains of FASD and FSA patients results, at least in part, from impaired turning of immature neurons by alcohol.
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Affiliation(s)
- T Kumada
- Department of Neurosciences, Lerner Research Institute, The Cleveland Clinic Foundation, Cleveland, OH 44195, USA
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Kiyokawa T, Asato Y, Komuro Y, Imura J, Yoshimi F, Amemiya R. Weight loss and an abdominal mass after resection of a lung carcinoma. Gut 2006; 55:1422, 1528. [PMID: 16966700 PMCID: PMC1856446 DOI: 10.1136/gut.2005.090035] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- T Kiyokawa
- Department of Surgery, Ibaraki Prefectural Central Hospital and Cancer Center, 6528 Tomobe Koibuchi, Nishiibarakigun, Ibaraki 309-1793, Japan
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Muramatsu S, Suga Y, Mizuno Y, Haseegawa T, Komuro Y, Kubo Y, Imakado S, Ogawa H. A Japanese case of naevoid basal cell carcinoma syndrome associated with segmental vitiligo. Br J Dermatol 2005; 152:812-4. [PMID: 15840128 DOI: 10.1111/j.1365-2133.2005.06504.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Komuro Y, Yanai A, Hayashi A, Nakanishi H, Miyajima M, Arai H. Cranial reshaping employing distraction and contraction in the treatment of sagittal synostosis. ACTA ACUST UNITED AC 2005; 58:196-201. [PMID: 15710114 DOI: 10.1016/j.bjps.2004.06.034] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2003] [Accepted: 06/24/2004] [Indexed: 10/26/2022]
Abstract
We treated four patients with scaphocephaly using a combination of distraction and contraction techniques and achieved satisfactory results. Radial osteotomies in the frontal and occipital bones flattened these abnormal bossing bones and accelerated the disappearance of bony bumps created by distraction. This technique facilitates the achievement of the desired shape of the skull through fine adjustments of the distraction and contraction devices.
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Affiliation(s)
- Y Komuro
- Department of Plastic Surgery, Juntendo University School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan.
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Komuro Y, Watanabe T, Nagawa H. Multiple confluent telangiectatic lesions following radiation treatment for prostate cancer. Endoscopy 2004; 36:252. [PMID: 14986233 DOI: 10.1055/s-2004-814265] [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)
- Y Komuro
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Tokyo, Japan
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Affiliation(s)
- Y Komuro
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Tokyo, Japan
| | - T Watanabe
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Tokyo, Japan
| | - K Hata
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Tokyo, Japan
| | - H Nagawa
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Tokyo, Japan
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Komuro Y, Watanabe T, Hosoi Y, Matsumoto Y, Nakagawa K, Saito S, Ishihara S, Kazama S, Tsuno N, Kitayama J, Suzuki N, Tsurita G, Muto T, Nagawa H. Prediction of tumor radiosensitivity in rectal carcinoma based on p53 and Ku70 expression. J Exp Clin Cancer Res 2003; 22:223-8. [PMID: 12866572] [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: 03/03/2023]
Abstract
The identification of predictive indicators of radiosensitivity is extremely useful in selecting patients suited for preoperative radiotherapy and avoiding unnecessary preoperative treatment. In this study, we evaluated the possible role of the immunohistochemical expression pattern of p53 and Ku70 protein in determining tumor radiosensitivity in rectal cancer before preoperative irradiation. We examined pretreatment biopsy materials from 111 patients by immunohistochemistry. The expression pattern of p53 and Ku70 was evaluated for association with tumor radiosensitivity, which was defined according to the criteria of the Japanese Research Society for Cancer of the Colon and Rectum. There was a significant correlation between the expression pattern of p53 and tumor radiosensitivity (P = 0.045); Ku70 and tumor radiosensitivity (P < 0.001); and the combination of p53 and Ku70, and tumor radiosensitivity (P < 0.001). The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy in both p53 and Ku70-positive cases for radioresistance were all superior to those of the group positive for p53 alone. In conclusion the examination of the combination of p53 and Ku70 may predict the radiosensitivity of rectal cancer before preoperative irradiation.
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Affiliation(s)
- Y Komuro
- Dept. of Surgical Oncology, Faculty of Medicine, University of Tokyo, Japan.
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Affiliation(s)
- Y. Komuro
- Center for Climate System Research; University of Tokyo; Tokyo Japan
| | - H. Hasumi
- Center for Climate System Research; University of Tokyo; Tokyo Japan
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Abstract
BACKGROUND Ependymoma is a tumor that usually develops in the central nervous system and is extremely rare in the ovary. The first case of ovarian ependymoma was reported by Kleinman et al. (Kleinman GM, Young RH, Scully RE. Ependymoma of the ovary: report of three cases. Hum Pathol 1984;15:632-8.) in 1984, and only eight cases have been reported since then. Criteria for the histopathologic diagnosis of ependymoma are already established, but there has been no investigation of the cytologic diagnosis of ovarian ependymoma. METHODS An imprint cytologic specimen was obtained from a recurrent ovarian ependymoma. The imprint cytologic features were compared with the findings of histologic examination, immunostaining, and electron microscopy. RESULTS Imprint cytology revealed clusters of small cells with tapering cytoplasmic processes and a round nucleus. On the basis of these features, a neurogenic tumor could be included in the differential diagnosis. Furthermore, many rosette-like collections of cells that were suggestive of ependymal rosettes or perivascular pseudorosettes, characteristic of ependymoma, were found. The presence of ependymal rosettes and perivascular pseudorosettes also were confirmed by the histopathologic examination. Together with positive immunostaining for glial fibrillary acidic protein, this led to the diagnosis of ependymoma, which also was supported by the electron microscopic findings. CONCLUSIONS Careful observation of the imprint cytologic specimen of an ovarian ependymoma should reveal numerous rosette-like collections of cells that were suggestive of ependymal rosettes or perivascular pseudorosettes. In addition, if we remember that ependymoma can develop in the ovary and find cells with tapering processes that suggest a neurogenic tumor, it may be possible to detect histologic features characteristic of ependymoma by the imprint cytology. To our knowledge, this is the first report on the imprint cytologic diagnosis of ependymoma originating in the ovary.
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Affiliation(s)
- Y Komuro
- Department of Obstetrics and Gynecology, National Saitama Hospital, Wako City, Saitama, Japan
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Komuro Y, Udagawa Y, Susumu N, Aoki D, Kubota T, Nozawa S. Paclitaxel and SN-38 overcome cisplatin resistance of ovarian cancer cell lines by down-regulating the influx and efflux system of cisplatin. Jpn J Cancer Res 2001; 92:1242-50. [PMID: 11714450 PMCID: PMC5926666 DOI: 10.1111/j.1349-7006.2001.tb02146.x] [Citation(s) in RCA: 11] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Cisplatin (DDP) is one of the key drugs used to treat patients with ovarian cancer, although resistance to DDP can occur. Paclitaxel and SN-38 (an active metabolite of irinotecan (CPT-11)) are two drugs that are effective in patients with DDP-resistant ovarian cancer. To study how these drugs may overcome the intrinsic and / or acquired resistance of cancer cells to DDP, we investigated the effect of a combination of DDP with paclitaxel and a combination of DDP with SN-38 on three ovarian cancer cell lines, RTSG (intrinsically resistant cell line), KF (DDP-sensitive cell line), and KFra (acquired resistant cell line obtained from KF). We found that these combinations showed additive to synergistic antitumor activity. A time-dependent platinum (Pt) accumulation was observed in the DDP-sensitive KF cell line, while a decrease occurred in the KFra cell line. Little accumulation was observed in RTSG. Intracellular Pt accumulation was increased in all three cell lines by exposure to paclitaxel or SN-38. Ouabain, a Na(+),K(+)-ATPase inhibitor, decreased Pt accumulation in KF and KFra cell lines and inhibited the paclitaxel- and SN-38-induced increases in Pt accumulation in these cell lines. When we assessed the mRNA levels of the multidrug resistance-associated protein (MRP), which may be an efflux pump for DDP, the combination of paclitaxel or SN-38 with DDP down-regulated these levels, which are up-regulated by DDP alone. These results suggest that paclitaxel and SN-38 overcome DDP resistance of ovarian cell lines by controlling intracellular accumulation of DDP via both the influx and efflux systems.
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Affiliation(s)
- Y Komuro
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582.
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Mikami M, Komuro Y, Sakaiya N, Tei C, Kurahashi T, Komiyama S, Hirose T. Primary ependymoma of the ovary, in which long-term oral etoposide (VP-16) was effective in prolonging disease-free survival. Gynecol Oncol 2001; 83:149-52. [PMID: 11585429 DOI: 10.1006/gyno.2001.6343] [Citation(s) in RCA: 16] [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: 11/22/2022]
Abstract
BACKGROUND Ovarian ependymoma is an extremely unusual teratoma of the ovary with only eight cases previously reported in the literature worldwide. CASE A 26-year-old woman presented in 1992 with a sensation of abdominal fullness. The laparotomy revealed ovarian cancer (stage III), which proved to be an ependymoma pathologically. Three courses of the PVP regimen (cisplatin, vinblastine, peplomycin) and pelvic irradiation were administered postoperatively. Oral administration of etoposide (VP-16) was initiated after the residual tumor began to proliferate, and the tumor decreased in size and never regrew during etoposide administration for a total of 5 years and 8 months. The recurrent tumor was observed soon after the drug was discontinued. CONCLUSION Oral administration of etoposide was effective in prolonging disease-free survival.
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Affiliation(s)
- M Mikami
- Department of Obstetrics and Gynecology, National Saitama Hospital, Suwa 2-1, Wako, Saitama 351-0102, Japan.
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Mikami M, Ono A, Sakaiya N, Kurahashi T, Komiyama S, Komuro Y, Tei C. Case report of serous ovarian tumor of borderline malignancy (Stage Ic) in a pregnant woman. Eur J Obstet Gynecol Reprod Biol 2001; 98:237-9. [PMID: 11574138 DOI: 10.1016/s0301-2115(01)00299-8] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We encountered a case of Stage Ic ovarian serous borderline malignancy in the first trimester of pregnancy. At laparotomy, spontaneous rupture of the capsule and a small amount of serous ascites was observed. Because of the laparotomy during pregnancy, correct staging of the tumor might not be performed. This case presented a major problem in deciding the treatment strategy, which are reported here together with some discussion of the literature on the preservation of fertility in borderline ovarian malignancy.
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Affiliation(s)
- M Mikami
- Department of Obstetrics and Gynaecology, National Saitama Hospital, Suwa 2-1, Wako City, Saitama 351-0102, Japan.
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Hata K, Kitayama J, Shinozaki M, Komuro Y, Watanabe T, Takano T, Iwase S, Nagawa H. Intestinal perforation due to metastasis of breast carcinoma, with special reference to chemotherapy: a case report. Jpn J Clin Oncol 2001; 31:162-4. [PMID: 11386463 DOI: 10.1093/jjco/hye030] [Citation(s) in RCA: 15] [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: 02/07/2023] Open
Abstract
We report a case of small-bowel perforation due to metastatic carcinoma of the breast during chemotherapy. Partial resection of the small intestine and primary anastomosis were performed. Although the patient made a good recovery from panperitonitis, she died of the disease on the 55th postoperative day. Since perforation during chemotherapy results in an extremely poor prognosis, special caution during chemotherapy is needed for patients with possible gastrointestinal involvement with tumor.
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Affiliation(s)
- K Hata
- Department of Surgical Oncology, The University of Tokyo, Japan.
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Nakamura-Uchiyama F, Komuro Y, Yoshii A, Nawa Y. Amblyomma testudinarium tick bite: one case of engorged adult and a case of extraordinary number of larval tick infestation. J Dermatol 2000; 27:774-7. [PMID: 11211793 DOI: 10.1111/j.1346-8138.2000.tb02280.x] [Citation(s) in RCA: 12] [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: 11/30/2022]
Abstract
This paper reports two recent cases of tick bite due to Amblyomma testudinarium. The first case was an 86-year-old farmer infested with a fully engorged adult tick attached on his inguinal region. The second case was a 57-year-old male infested with an extraordinarily large number of larval ticks (> 100 larvae). The ticks were identified as A. testudinarium based on morphological characteristics. To our knowledge, the latter case is the eleventh case of larval tick bites among all tick species and the fourth case with larval A. testudinarium in Japan.
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Abstract
Object
The authors describe the use of distraction devices and surgical techniques of distraction osteogenesis for the treatment of patients with craniosynostosis.
Methods
Since 1994, the authors have performed distraction procedures in 23 patients with craniosynostosis in whom osteogenesis was achieved. Thirteen of the 23 patients underwent a complete Le Fort III midface osteotomy and distraction. In 10 patients the distraction osteogenesis involved the cranial bone; six underwent combined forehead and midface distraction (Le Fort IV distraction) in which multiple internal devices were used after performing a Le Fort IV osteotomy.
An external distraction procedure was used to treat the first two cases. Since 1996, the authors have used internal devices developed in their unit.
Distraction was initiated 1 week after the osteotomy at the rate of 0.5 mm per day for the cranium and 1.0 mm per day for the midface. The consolidation phase after distraction was initiated was 2 to 3 months.
No major complications such as intracranial infection or neurological deficits were observed during the course of distraction osteogenesis. The osteogenesis generated at the distraction site was considerably satisfactory; and recurrence of the deformity in the follow-up period was minimal.
Conclusions
Distraction osteogenesis for craniofacial deformity has numerous advantages: 1) bone grafting is unnecessary; 2) the procedure is less invasive, has short operating time, and less blood loss occurs than in conventional craniofacial procedures; 3) no intracranial dead space is created; 4) there is a good amount of blood flow to the bone segment; and 5) soft-tissue expansion occurs. The authors believe that distraction osteogenesis is a versatile and stable option for the treatment of patients with craniosynostosis.
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Affiliation(s)
- T Akizuki
- Department of Plastic Surgery, Tokyo Metropolitan Police Hospital, Chiyoda-ku, Tokyo, Japan.
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Tanigawa K, Sugiyama K, Matsuyama H, Nakao H, Kohno K, Komuro Y, Iwanaga Y, Eguchi K, Kitaichi M, Takagi H. Mesalazine-induced eosinophilic pneumonia. Respiration 2000; 66:69-72. [PMID: 9973695 DOI: 10.1159/000029341] [Citation(s) in RCA: 43] [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: 12/13/2022] Open
Abstract
A 35-year-old woman with a 6-month history of ulcerative colitis and treatment with oral mesalazine (5-aminosalicylic acid) developed dry cough, low-grade fever and bilaterally wandering pulmonary infiltrates. Improvement in clinical symptoms and radiological abnormalities occurred spontaneously after discontinuation of mesalazine. The transbronchial lung biopsy demonstrated the organizing stage of eosinophilic pneumonia. Drug lymphocyte stimulation test was positive for mesalazine and negative for sulfasalazine and sulfapyridine. The present case indicates that although mesalazine-induced eosinophilic pneumonia is an extremely rare entity, its possibility should be fully considered in patients developing unexplained respiratory symptoms while on mesalazine therapy.
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Affiliation(s)
- K Tanigawa
- Department of Internal Medicine, Kohseikai Hospital, Nagasaki University School of Medicine, Nagasaki, Japan
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19
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Ohie S, Udagawa Y, Kozu A, Komuro Y, Aoki D, Nozawa S, Moossa AR, Hoffman RM. Cisplatin sensitivity of ovarian cancer in the histoculture drug response assay correlates to clinical response to combination chemotherapy with cisplatin, doxorubicin and cyclophosphamide. Anticancer Res 2000; 20:2049-54. [PMID: 10928150] [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]
Abstract
The histoculture drug sensitivity assay (HDRA) has been demonstrated to have high predictability for resistance, sensitivity, and survival for gastrointestinal cancer (Clin Cancer Res 1: 305-311, 1995; Clin Cancer Res 1: 1537-1543, 1995). In this report, we evaluated the clinical usefulness of the HDRA in ovarian cancer. HDRA was performed on tumors from patients with ovarian cancer. Eighty-five cases (97%) were evaluable. Tumor fragments were cultured on collagen-sponge gels. The cultures were incubated with cisplatin (CDDP) for seven days. Cell viability were assessed with the MTT end point. The optimal cut off concentration of CDDP was determined to be 25 micrograms/ml by correlation with the historical clinical response rate to CDDP. HDRA results were correlated to clinical response of 15 patients who received CDDP-based therapy that included doxorubicin and cyclophosphamide (CAP therapy). The true positive rate was 88%, the true negative rate was 86%, the sensitivity was 88%, the specificity was 86%, and the accurate prediction rate was 87% when HDRA results were compared to the response of the treated patients. The data suggest that the HDRA is capable of predicting the response to antitumor chemotherapy in patients with ovarian cancer and that measuring response to CDDP can be useful for optimization of CAP chemotherapy for patients with this disease.
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MESH Headings
- Adenocarcinoma, Clear Cell/drug therapy
- Adenocarcinoma, Clear Cell/pathology
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Carcinoma, Endometrioid/drug therapy
- Carcinoma, Endometrioid/pathology
- Cisplatin/administration & dosage
- Cisplatin/pharmacology
- Cyclophosphamide/administration & dosage
- Cystadenocarcinoma, Mucinous/drug therapy
- Cystadenocarcinoma, Mucinous/pathology
- Cystadenocarcinoma, Serous/drug therapy
- Cystadenocarcinoma, Serous/pathology
- Doxorubicin/administration & dosage
- Drug Resistance, Neoplasm
- Drug Screening Assays, Antitumor
- Female
- Humans
- Ovarian Neoplasms/drug therapy
- Ovarian Neoplasms/pathology
- Sensitivity and Specificity
- Tumor Cells, Cultured/drug effects
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Affiliation(s)
- S Ohie
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo, Japan
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Abstract
Among patients with uterine cervical cancer, glassy-cell carcinoma is very rare. The disease occurs mainly in younger patients, is rapidly progressive, and has a poor prognosis. We describe a case of glassy-cell carcinoma of the uterine cervix, in which preoperative intra-arterial chemotherapy was surprisingly effective.
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Masuda T, Sekiguchi J, Komuro Y, Nomura S, Ohmori K. "Face to face": a new method for the treatment of polydactyly of the thumb that maximises the use of available soft tissue. Scand J Plast Reconstr Surg Hand Surg 2000; 34:79-85. [PMID: 10756580 DOI: 10.1080/02844310050160213] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Some patients with distal phalangeal polydactyly of the thumb have severe hypoplastic pulps that are difficult to make sufficiently large with either the fillet flap method or a symmetrical combination, the Bilhaut-Cloquet method. We have devised a new method to reconstruct the largest possible pulp by resecting only a minimum amount of soft dorsal skin tissue with one nail and not resecting any of the palmar skin of the thumbs. By contrast, other procedures require some resectioning of soft tissue of both the dorsal and the palmar skin. We have treated 13 cases with distal phalangeal polydactyly of the thumb since 1988 in this way. All the thumbs were successfully reconstructed with a sufficiently large pulp. The only problem was slight instability of the skin of the pulp after the operation, but this condition gradually improved during a five-year follow up. We think that this method facilitates the reconstruction of a sufficiently large pulp when both bifid pulps are hypoplastic.
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Affiliation(s)
- T Masuda
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Police Hospital, Japan
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22
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Abstract
Pectus excavatum has been most commonly corrected by either the sternal elevation or turnover methods. Both of these procedures require a long skin incision in the anterior chest wall. Endoscopic techniques have been introduced into the treatment of pectus excavatum since 1994 to minimize the skin incision to approximately 1 inch. Thirty patients with pectus excavatum (25 men and 5 women) underwent surgery employing the centimeter incision method assisted by the endoscope. The mean age at the time of surgery was 11.9 years (range, 4-45 years). The patients were classified as having one of three types of pectus excavatum: Type I (symmetrical and localized) was seen in 18 patients (60%), type II (symmetrical and diffuse) was seen in 5 patients (17%), and type III (localized or diffuse but asymmetrical) was seen in 7 patients (23%). Although the results of the thoracic cage correction achieved using our procedure were excellent overall, the results were best for type I, with clear improvement achieved in the funnel index-0.48 to 0.63. All of the patients recovered well without any severe complications, and both the patients and their families found the results obtained using this method to be quite satisfactory, especially because of the minimal postoperative scar.
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Affiliation(s)
- Y Komuro
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Police Hospital, Japan
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23
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Iwasaki K, Komuro Y, Masumoto N, Asaoka K, Ishitani K. [A case of advanced ovarian clear cell adenocarcinoma responding to cisplatin-cyclophosphamide and paclitaxel-carboplatin]. Gan To Kagaku Ryoho 1999; 26:1483-6. [PMID: 10500539] [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
We report a case of stage IV ovarian clear cell adenocarcinoma successfully controlled by a combination of cisplatin-cyclophosphamide (CP) and paclitaxel-carboplatin (TJ). A 64-year-old female with advanced ovarian cancer and pleural effusion underwent 4 courses of combination chemotherapy with CP. The giant ovarian tumor showed a relative reduction in size and the pleural effusion disappeared. Serum CA-125 levels and CA 19-9 levels markedly decreased. Thus, the patient underwent a total hysterectomy and bilateral salphingoophorectomy. During the operation, a giant ovarian clear cell adenocarcinoma was found, but there was no peritoneal dissemination and no cancer cells in her peritoneal fluid. Thereafter, she underwent 3 courses of combination chemotherapy with TJ. She has had 13 months of stable, tumor-free survival since the operation and normal serum CA-125 and CA 19-9 levels. Ovarian clear cell adenocarcinoma generally responds poorly to cisplatin and carboplatin, but in combination chemotherapy with paclitaxel-carboplatin these may be effective.
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Affiliation(s)
- K Iwasaki
- Dept. of Obstetrics and Gynecology, Haga Red-cross Hospital
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24
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Abstract
A technique to correct frontal sinus hypertrophy is presented. The outer table of the frontal sinus is removed and divided into three pieces with an oscillation saw. The pieces are trimmed at the margin, fixed with two microplates, and regrafted. Bilateral lateral thick portions of the supraorbital rim are shaved with a surgical burr. At the same time, a forehead lift is performed. A satisfactory result with a flat and wide forehead can be obtained by employing this technique.
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Affiliation(s)
- Y Komuro
- Department of Plastic Surgery, Juntendo University School of Medicine, Tokyo, Japan
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25
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Komuro Y, Ichikawa T, Ishihara K, Saigenji K, Hotta K. Influence of L-365,260, a CCK-B/gastrin receptor antagonist, on tetragastrin-stimulated mucin metabolism in rat gastric mucosa. Pharmacology 1999; 59:11-20. [PMID: 10352422 DOI: 10.1159/000028301] [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: 11/19/2022]
Abstract
The effect of L-365,260, a CCK-B/gastrin receptor antagonist, on gastric mucus metabolism induced by tetragastrin was investigated in rats. In vivo application of L-365,260 at a dose of 3 mg/kg p.o. significantly reduced the tetragastrin (12 microg/kg s.c. )-stimulated gastric acid secretion, but 0.3 mg/kg of L-365,260 did not affect the gastric acid secretion induced by the tetragastrin administration. A single administration of 12 microg/kg of tetragastrin caused an increase in gastric mucin content in the soluble mucus (175% of control), the mucus gel (155% of control) and the surface mucosa (125% of control). L-365,260 at the doses of 0.3 and 3 mg/kg considerably inhibited the tetragastrin-induced mucus secretion in the soluble mucus (70-80% of tetragastrin) and the mucus gel (45-70% of tetragastrin) and resumed the mucus accumulated in the surface mucosa to the control situation (80% of tetragastrin). In the in vitro incubation system of rat gastric mucosa, L-365,260 (0.1-10 micromol/l) caused no significant change in gastric mucin synthesis. An in vivo study also showed that the increase in total gastric mucin content and the distributional changes in mucin content induced by 12 microg/kg of tetragastrin reverted with 3 mg/kg of L-365,260 pretreatment to the control situation. It is evident from these results that the CCK-B/gastrin receptor is involved in the mechanism of the stimulation of mucus secretion and/or mucus accumulation in rat gastric mucosa and not directly concerned with the action of gastrin-induced gastric acid secretion.
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Affiliation(s)
- Y Komuro
- Department of Internal Medicine, Graduate School of Medical Sciences, Kitasato University, Sagamihara, Japan
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26
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Abstract
The process of bone formation by distraction osteogenesis of the craniofacial bone has been studied in animals. To our knowledge there are no published findings in which histological examination of craniofacial distraction in humans has been reported. Specimens were obtained from 10 patients who underwent craniofacial distraction: 2 patients who underwent mandibular distraction, 7 patients who underwent midface distraction, and 1 patient who underwent nasal bone distraction. These specimens were examined histologically. The results revealed that 8 of 10 patients exhibited new bone formation. No cartilaginous callus formation was observed in any of the specimens, which strongly suggests that new bone was produced by intramembranous ossification during human craniofacial bone distraction.
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Affiliation(s)
- Y Komuro
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Police Hospital, Japan
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27
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Sugiyama K, Tanigawa K, Sakai M, Okuno S, Ohtsubo T, Nakao H, Kohno K, Yoshioka M, Komuro Y, Iwanaga Y, Takagi H. A symptomatic Rathke's cleft cyst: preoperative diagnosis. Chin Med J (Engl) 1998; 111:1124-5. [PMID: 11263379] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Affiliation(s)
- K Sugiyama
- Department of Internal Medicine, Kohseikai Hospital, 1-3-12, Hayama, Nagasaki 852, Japan
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28
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Tanigawa K, Sakai M, Ohtsubo T, Ishibashi M, Okuno S, Nakao H, Kohno K, Komuro Y, Iwanaga Y, Takagi H. Successive continuous hemodiafiltrations for severe acute pancreatitis in a patient with chronic renal failure. Chin Med J (Engl) 1998; 111:765-6. [PMID: 11245039] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Affiliation(s)
- K Tanigawa
- Internal Medicine and Division of Nephrology, Kohseikai Hospital, 1-3-12 Hayama, Nagasaki 852, Japan
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29
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Hattori T, Komuro Y, Hayashizaka N, Takahashi H, Miyano S. Synthesis of chiral aminophosphines via nucleophilic aromatic substitution and their application to palladium-catalyzed enantioselective allylic substitution. Enantiomer 1998; 2:203-13. [PMID: 9676268] [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: 02/08/2023]
Abstract
Novel chiral aminophosphines, N,N-disubstituted diphenyl(1-amino-2-naphthyl)phosphines 4 were synthesized via nucleophilic aromatic substitution reaction on 1-methoxy-2-(diphenylphosphinoyl)naphthalene (1) by chiral lithium amides 2, followed by reduction of the phosphinoyl function. The new ligands were tested for their efficiency in the palladium-catalyzed allylic substitution of dimethyl malonate with 1,3-diphenyl-2-propenyl acetate and high asymmetric inductions up to 80%ee were observed.
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Affiliation(s)
- T Hattori
- Department of Biochemistry and Engineering, Faculty of Engineering, Tohoku University, Sendai, Japan
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30
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Abstract
For the treatment of mild crossbite with increased bigonial distance, the authors performed a vertical symphyseal osteotomy on six patients in the last 3 years. Three of these patients had cleft lip deformities and the others had operations for orthodontic or aesthetic reasons. After exposing the mandible through the buccal mucosal incision, both premolars were extracted with or without conventional segmental osteotomy. The two vertical symphyseal osteotomies were performed with approximately 1 cm between them, and the central part of the mandibular bone was discarded. The bilateral segments of the mandibular body were fixed in the midline using titanium miniplates. Satisfactory results were obtained with a reduction in the size of the mandibular arch, which produced better three-dimensional proportions in the bimaxillary area. No patients had temporomandibular joint problems, however postoperative orthodontics were essential for this type of operation.
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Affiliation(s)
- T Nagase
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Police Hospital, Japan
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31
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Komuro Y, Ishihara K, Kojima Y, Saigenji K, Hotta K. Distinct effects of tetragastrin in rat gastroduodenal mucosa on mucin content and mucosal protective action against histamine-induced injury. Dig Dis Sci 1998; 43:1050-6. [PMID: 9590421 DOI: 10.1023/a:1018839003603] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We examined the effects of tetragastrin on mucin (mucus glycoprotein) content and mucosal damage in the rat stomach and duodenum. Following an injection of tetragastrin (12, 120, or 400 microg/kg subcutaneously), no macroscopic damage was found to the gastric mucosa but an increase in corpus mucin content was noted, whereas mucosal lesions appeared and the mucin content decreased in the duodenum in a dose-related manner. In the groups with histamine (0.8, 8, or 80 mg/kg intraperitoneally) administration, the extent of mucosal damage and the decrease in mucin content were dose-related in both these regions. For assessment of the effect of tetragastrin on the protective action in gastroduodenal mucosa, changes in mucin content and mucosal damage with histamine (80 mg/kg) -induced injury were examined. Coadministration of tetragastrin prevented the gastric mucosal damage and inhibited the decrease in corpus mucin content. In the duodenum, tetragastrin aggravated the histamine-induced mucosal damage and did not inhibit the reduction of the mucin content. From the present results, the increase in gastric mucins induced by tetragastrin might be related to the protective effect of gastric mucosa against injury. Tetragastrin did not protect the duodenal mucosa, and histamine-induced injury occurring in this region would be aggravated by the increase in HCl secretion and the decrease in mucin content induced by tetragastrin.
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Affiliation(s)
- Y Komuro
- Department of Internal Medicine, School of Medicine, Kitasato University, Kanagawa, Japan
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32
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Ichikawa T, Ishihara K, Komuro Y, Saigenji K, Hotta K. Effects of histamine on mucin biosynthesis in rat gastric mucosa. J Clin Gastroenterol 1998; 25 Suppl 1:S89-93. [PMID: 9479632 DOI: 10.1097/00004836-199700001-00015] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Mucin biosynthesis is stimulated by gastrin during the process of glycosylation in the corpus mucosa of the rat stomach. The purpose of this study was to clarify, using an organ culture technique, whether biosynthetic responses to histamine in the rat gastric mucin are the same as that to gastrin. Radiolabeled mucin was obtained from the corpus and antral mucosa of the rat stomach after in vitro incubation for 5 h with [3H]glucosamine (GlcN), [14C]threonine (Thr), and [35S]sulfate. Addition of histamine (10(-7)-10(-5) M) to the culture medium increased [3H]GlcN-labeled mucin in the corpus tissue in a concentration-dependent manner. In the antrum, there was no significant change in the biosynthetic activity of mucin in response to histamine. Histamine at 10(-5) M also increased the incorporation of both [35S]sulfate and [14C]Thr into the corpus mucin. These results indicate that histamine stimulates the biosynthesis of the mucin peptide, as well as the glycosylation step in the corpus, and suggest that the effect of histamine on mucin synthesis is distinct from that of gastrin.
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Affiliation(s)
- T Ichikawa
- Department of Biochemistry, Kitasato University School of Medicine, Kanagawa, Japan
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33
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Abstract
The authors investigated blood coagulation activity in patients who underwent microsurgery. Hemostatic parameters were measured in 9 patients (10 operations) who were undergoing free tissue transfers. These parameters included prothrombin time (PT), activated partial thromboplastin time (APTT), fibrinopeptide A (FPA), prothrombin fragment 1 + 2 (F1 + 2), and thrombin-antithrombin complex (TAT). The flap totally necrosed owing to vasospasm in 1 patient with osteomyelitis of the heel, and the FPA, F1 + 2, and TAT values significantly increased. Reexploration was required because of flap cyanosis in 1 patient with a hemangioma on the wrist, and the F1 + 2 and TAT values increased during the salvage procedure. These molecular markers could be important in indicating hypercoagulable state sensitivity, and they serve as a warning of possible vascular compromise to a surgeon.
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Affiliation(s)
- Y Komuro
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Police Hospital, Japan
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34
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Abstract
We examined the effects of histamine on mucin localized in the different regions and layers of rat gastric mucosa by determining the changes in the content as well as the biosynthetic activity of the mucin. In vivo administration of 0.8 mg/kg of histamine, which could not induce a concomitant gastric acid secretion, caused a significant increase in the mucin content in the corpus mucosa, but not in the antral mucosa. This increase was due to a significant accumulation of the mucin in the mucus gel and surface mucosa of the corpus region, whereas that in the deep mucosa did not significantly change. In the in vitro incubation system of rat gastric mucosa, histamine and dibutyryl cyclic AMP significantly increased [3H]-labeled mucin in the corpus. The histamine-induced acceleration of mucin biosynthesis was suppressed by ranitidine, but not pyrilamine. In the antrum, the biosynthetic activity showed no significant change by histamine. These results suggest that histamine promotes mucin metabolism via histamine H2 receptors in the surface mucosal layer of the corpus.
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Affiliation(s)
- T Ichikawa
- Department of Biochemistry, Kitasato University School of Medicine, Kanagawa, Japan.
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35
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Abstract
Multiple neurilemomas in a patient involving the same peripheral nerve is quite rare. We report a case of multiple neurilemomas involving the ulnar nerve.
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Affiliation(s)
- Y Komuro
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Police Hospital, Japan
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36
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Abstract
Six patients with pectus excavatum and two patients with pectus carinatum had their conditions corrected by a partial costal cartilage resection with a sternal osteotomy through a 2.5-cm to 4-cm skin incision located just above the xyphoid process assisted by an endoscope. In addition to the incision, stab wounds of less than 3 mm in diameter were also made, in some cases, for insertion of the surgical instruments to facilitate the operation. The ribs and rib cartilages were exposed beyond the affected area through a prexyphoid incision under endoscopic control. The mobility of the skin incision site was thus enhanced, and it was possible to perform most of the subperichondrial partial costal cartilage resection under direct visualization. The pleura was freed from the sternum under endoscopic visualization. The advantages of this technique include minimal operative scars and the ability to free the pleura from the sternum under endoscopically magnified visualization, which prevents rupturing of the pleura in the retrosternal area.
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Affiliation(s)
- S Kobayashi
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Police Hospital, Japan
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37
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Abstract
Acute acalculous cholecystitis (AAC) usually occurs in the elderly and in those with severe pre-existing pathological conditions. However, there have recently been reports of AAC in relatively young immunosuppressed patients, such as those with acquired immunodeficiency syndrome (AIDS). We report here a 27-year-old woman with AAC who received an emergent cholecystectomy. Although anti-human immunodeficiency virus antibody (anti-HIV) was not detected, a decrease in the CD4/CD8 ratio in sera was found. This rare case of AAC in a patient with decreased CD4/CD8 ratio who showed no other related diseases suggests that surgeons should keep in mind the possible presence of immunosuppression in this condition.
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Affiliation(s)
- S Ikeda
- First Department of Surgery, University of Tokyo, Japan
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38
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Akiba Y, Mikami M, Komuro Y, Kishikawa T, Sakuma Y, Aoki D, Udagawa Y, Mukai M, Yoshimura Y, Nozawa S. [A case of neuroendocrine carcinoma of uterine cervix with the elevated plasma level of serotonin]. Nihon Sanka Fujinka Gakkai Zasshi 1996; 48:897-900. [PMID: 8921524] [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: 02/03/2023]
Affiliation(s)
- Y Akiba
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo
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39
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Yamamoto T, Horikawa N, Komuro Y, Hara Y. Effect of topical application of a stable prostacyclin analogue, SM-10902 on wound healing in diabetic mice. Eur J Pharmacol 1996; 302:53-60. [PMID: 8790992 DOI: 10.1016/0014-2999(96)00019-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [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: 02/02/2023]
Abstract
The mechanism of wound healing induced by topical application of an ointment containing a new stable prostacyclin analogue, SM-10902 ((+)-methyl[2-[(2R,3aS,4R,5R, 6aS)-octahydro-5-hydroxy-4-[(E)-(3S,5S)-3-hydroxy-5-methyl-1- nonenyl]-2-pentalenyl] ethoxy] acetate), was investigated in the full-thickness wounds of genetically diabetic mice (db/db mice). The db/db mice treated with SM-10902 ointment (1, 10 and 100 micrograms/g) showed greater decrease in wound lesion area not covered with epidermis and fewer complete healing days than those treated with ointment base, and the effects of this prostacyclin analogue were greater than those of lysozyme chloride ointment (50 mg/g, Reflap ointment). SM-10902 ointment increased skin blood flow in the central site of the wound with development of wound healing. Histological evaluation of wounds revealed that SM-10902 ointment increased the capillary number during the early stage of the wound-healing process. These results suggest that SM-10902 ointment promotes wound healing through the stimulation of angiogenesis and the improvement of blood flow in neovascularization of repairing wound and may be useful in the treatment of skin ulcers caused by peripheral circulatory insufficiency.
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Affiliation(s)
- T Yamamoto
- Research Center, Sumitomo Pharmaceuticals Co., Ltd., Osaka, Japan
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40
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Abstract
Prostaglandins E1, prostaglandin E2, 3-oxa-methano-prostaglandin I1 (SM-10906), a stable prostaglandin I2 analog, and dibutyryl cyclic AMP suppressed the production of tumor necrosis factor and interleukin-1 in lipopolysaccharide-stimulated rat pleural resident monocytic cells, whereas they enhanced the production of interleukin-6 and cytokine-induced neutrophil chemoattractant (CINC), a rat interleukin-8-like chemokine, in these cells. SM-10906 also inhibited the in vivo production of tumor necrosis factor and interleukin-1 in pleural exudates, when injected into the rat pleural cavity concomitantly with carrageenin. The cyclic AMP (cAMP) level in the lipopolysaccharide-stimulated resident cells was increased when the cells were incubated in the presence of prostaglandin E1, prostaglandin E2 or SM-10906. Prostaglandin I2 showed only slight effects. The addition of pentoxifylline, a phosphodiesterase inhibitor, to the incubation mixture increased the cAMP level and also enhanced the effect of prostaglandins, indicating that these regulating actions of prostaglandins may be exerted partly through a mechanism involving an increased intracellular cAMP level.
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Affiliation(s)
- S Oh-ishi
- Department of Pharmacology, School of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan
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41
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Nishimura T, Yamamoto T, Komuro Y, Hara Y. Antiplatelet functions of a stable prostacyclin analog, SM-10906 are exerted by its inhibitory effect on inositol 1,4,5-trisphosphate production and cytosolic Ca++ increase in rat platelets stimulated by thrombin. Thromb Res 1995; 79:307-17. [PMID: 8533126 DOI: 10.1016/0049-3848(95)00117-a] [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: 01/31/2023]
Abstract
The mechanism of the antiplatelet functions of SM-10906, the active form of the 3-oxa-methano-prostaglandin (PG) I1 analog SM-10902, was examined in rat platelets. SM-10906 activated adenylate cyclase in crude membrane fractions, and inhibited platelet aggregation and release of adenine nucleotides stimulated by thrombin. SM-10906 also inhibited malondialdehyde production induced by thrombin, but not that induced by arachidonic acid. This may account for its inhibitory effects on phospholipase A2. SM-10906 prevented thrombin-induced inositol 1,4,5-trisphosphate production, Ca++ mobilization from intracellular Ca storage and 45Ca++ influx into platelets, which were all reversed by pretreatment with the adenylate cyclase inhibitor 2',5'-dideoxyadenosine. PGI2 and PGE1 have the same antiplatelet profiles in the order of PGI2 > or = SM-10906 > PGE1. These results indicate that SM-10906 as well as PGI2 and PGE1 may exert antiplatelet activities by stimulating adenylate cyclase to prevent thrombin-induced phospholipase C and A2 activations and increase in cytosolic Ca++ level.
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Affiliation(s)
- T Nishimura
- Research Center, Sumitomo Pharmaceuticals Co., Osaka, Japan
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42
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Abstract
A patient with a proliferating trichilemmal tumor on the dorsum of a hand is described. A surgical excision was performed, and the skin defect was covered with a distally based posterior interosseous island flap. In the operation, an iron fragment was found beneath the mass, and this was thought to have triggered development of the tumor.
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Affiliation(s)
- Y Komuro
- Department of Plastic and Reconstructive Surgery, Asahi General Hospital, Chiba, Japan
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43
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Abstract
The effect of lansoprazole, a new benzimidazole proton pump inhibitor, on the relationship between ulcer healing and changes in mucin content was studied in gastric ulcer patients. Twenty-one outpatients with active gastric ulcers received lansoprazole 30 mg once daily given in the morning for 8 weeks. The gastric mucin content was examined by HPLC analysis of hexosamines in gastric biopsy specimens obtained from the lesser curvature of the pylorus and the greater curvature of the upper body. The ulcer healing rate for lansoprazole was 85.7% at 8 weeks. The mucin content of both mucosal regions significantly decreased to approximately 70% (pylorus 70.9%; upper body 74.7%) of the value before drug treatment. The results of this study demonstrate that 30 mg lansoprazole once daily is remarkably effective in healing gastric ulcers because of its potent acid suppression. It appears that acid inhibition is the primary factor in initial treatment. However, maintaining an altered gastric mucosal defense mechanism may have implications for the long-term treatment of gastric ulcers.
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Affiliation(s)
- Y Komuro
- Department of Internal Medicine, Kitasato University School of Medicine, Kanagawa, Japan
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44
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Komuro Y, Takedai T. Accessory scrotum: a case report and review of the literature. Br J Plast Surg 1994; 47:579-80. [PMID: 7697289 DOI: 10.1016/0007-1226(94)90145-7] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
An accessory scrotum is a rare congenital anomaly. The authors report the case of an accessory scrotum in the mid-perineum which was not associated with any other anomalies, and describe the surgical result.
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Affiliation(s)
- Y Komuro
- Department of Plastic and Reconstructive Surgery, Asahi General Hospital, Chiba, Japan
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45
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Takato T, Harii K, Yonehara Y, Komuro Y, Susami T, Uoshima K. Correction of the cleft nasal deformity with an L-shaped iliac bone graft. Ann Plast Surg 1994; 33:486-93; discussion 493-5. [PMID: 7857042 DOI: 10.1097/00000637-199411000-00005] [Citation(s) in RCA: 16] [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: 01/27/2023]
Abstract
We describe our technique for correcting a cleft lip nasal deformity using L-shaped iliac bone grafts to achieve additional structural support and the desired nasal projection and profile. Augmenting the nasal bridge creates the illusion of a narrower nose. Further, the columellar portion of the L-shaped graft provides stabilization, eliminating the "see-saw" effect of the bridge graft on the fulcrum of the bony bridge, which can lead to a depressed tip and loss of the root indentation. Clinical and radiographic observation has revealed that this method of correction has consistently produced satisfactory results.
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Affiliation(s)
- T Takato
- Department of Oral Surgery, Faculty of Medicine, University of Tokyo, Japan
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46
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Abstract
The process of bone formation in mandibular lengthening by distraction was studied in 30 rabbits. The mandible was subjected to a corticotomy, held in a neutral position for 2 weeks, and then lengthened at 0.18 mm per 12 hours for 24 days using a unilateral external fixation device (Orthofix M-100). On completion of the distraction, x-ray analysis showed that the distracted gap was filled with callus organized into three zones, namely, two sclerotic zones with a central radiolucent zone. These zones became indistinguishable from the adjacent preexisting mandible at 10 weeks after distraction. Histologically, new bone, which was formed by both intramembranous and endochondral ossification, underwent remodeling and resulted in cortical bone by 8 to 10 weeks after completion of distraction.
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Affiliation(s)
- Y Komuro
- Department of Plastic Surgery, Faculty of Medicine, University of Tokyo, Japan
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Ishihara K, Ichikawa T, Komuro Y, Ohara S, Hotta K. Effect on gastric mucus of the proton pump inhibitor leminoprazole and its cytoprotective action against ethanol-induced gastric injury in rats. Arzneimittelforschung 1994; 44:827-30. [PMID: 7945516] [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
The effect of leminoprazole ((+-)-2-[[2-(isobutyl-methylamino)benzyl]sulfinyl]-1H-benzimidazol e, NC-1300-O-3, CAS 104340-86-5), a new compound being developed as an inhibitor of the gastric mucosal proton pump (H+,K(+)-ATPase), on gastric mucus secretion was studied by a biochemical method measuring the gastric mucin content in rats. Oral administration of leminoprazole (30 mg/kg) strongly inhibited the hemorrhagic lesions induced by 60% ethanol containing 0.15 mol/l HCl (acid-ethanol) administered 1 h later. Leminoprazole significantly inhibited the acid-ethanol-induced reduction of the mucin content in the surface mucosa including the mucus gel layer, but no significant effect could be obtained on the reduction of mucin present in the deep layer of the corpus and antral mucosa. Leminoprazole given to rats not treated with acid ethanol accelerated the secretion of deep mucosal mucus and increased significantly the content of soluble mucus which was recovered from the gastric luminal contents to about 200% of control, but failed to produce any significant change in the mucus content present in the surface mucosal and the mucus gel layers. The effect of leminoprazole on gastric mucus secretion might contribute to healing the peptic ulcer diseases and may be involved in the cytoprotective mechanism of this drug.
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Affiliation(s)
- K Ishihara
- Department of Chemistry, School of Medicine, Kitasato University, Kanagawa, Japan
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Ichikawa T, Ishihara K, Komuro Y, Kojima Y, Saigenji K, Hotta K. Effects of the new histamine H2 receptor antagonist, FRG-8813, on gastric mucin in rats with or without acidified ethanol-induced gastric damage. Life Sci 1994; 54:PL159-64. [PMID: 7509019 DOI: 10.1016/0024-3205(94)00553-2] [Citation(s) in RCA: 11] [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: 01/25/2023]
Abstract
It is not presently well understood whether the histamine H2 receptor antagonist has a function other than the inhibition of gastric acid secretion, such as the effect on the gastric mucosal defence mechanism. In this paper, we report the effect of FRG-8813 (N-[4-[4-(piperidinylmethyl)pyridyl-2-oxy]-(Z)-2-butenyl]-2- (furfurylsulfinyl) acetamide), a new histamine H2 receptor antagonist, on the rat gastric mucin content with or without 0.15N HCl-ethanol (60 %)-induced gastric damage. The prior administration of FRG-8813 significantly inhibited the occurrence of macroscopically observable hemorrhagic lesions induced by the acidified ethanol treatment. Using a newly developed biochemical method, the mucin content of the deep corpus and antral mucosa of the acidified ethanol-treated animals was significantly reduced to 50% and 32% of the control, respectively. These reductions were inhibited by the pretreatment with FRG-8813. Total mucin content in the entire stomach recovered to about 80% of the control value after pretreatment with FRG-8813. A single oral administration of FRG-8813 (30 mg/kg) caused no significant change in the total mucin content, but mucin in the adherent mucus gel layer selectively and significantly increased to 250% of the control. These results suggest that FRG-8813 not only inhibits acid secretion but may also affect the gastric mucosal defensive mechanism as well.
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Affiliation(s)
- T Ichikawa
- Department of Biochemistry, Kitasato University School of Medicine, Kanagawa, Japan
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Takato T, Harii K, Hirabayashi S, Komuro Y, Yonehara Y, Susami T. Mandibular lengthening by gradual distraction: analysis using accurate skull replicas. Br J Plast Surg 1993; 46:686-93. [PMID: 8298783 DOI: 10.1016/0007-1226(93)90201-l] [Citation(s) in RCA: 30] [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] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Bone lengthening in the upper and lower extremities by gradual distraction has become an accepted procedure. We have used an extraoral device to lengthen the mandible in four patients with unilateral mandibular hypoplasia. Using an accurate skull replica, the proposed corticotomy line, intended direction of lengthening, and appropriate position for the screws were determined. Following distraction, a significant increase in the dimensions of the affected mandible was obtained in each case. In this series, accurate skull replicas proved very useful for defining the anatomy, for surgical simulation and for pre- and postoperative evaluation.
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Affiliation(s)
- T Takato
- Department of Oral and Plastic Surgery, Faculty of Medicine, University of Tokyo, Japan
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Abstract
The gluteal thigh flap first reported by Hurwitz in 1980 can provide a large reliable flap for coverage of the sacrogluteal and perineal regions. This flap can be extended quite some way along its axial inferior gluteal vessels, but its width is limited to approximately 10 cm if direct approximation of the donor site defect is required. In this article, we report a U-shaped modification of the gluteal thigh flap for efficient use of the flap in covering a large defect in the sacrogluteal region.
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Affiliation(s)
- Y Komuro
- Department of Plastic Surgery, Faculty of Medicine, University of Tokyo, Japan
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