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Tsuboi N, Ogawa Y, Inomata T, Yoshida D, Yoshida S, Moriki T, Kumon M. Changes in the findings of dynamic MRI by preoperative CAF chemotherapy for patients with breast cancer of stage II and III: pathologic correlation. Oncol Rep 1999; 6:727-32. [PMID: 10373646 DOI: 10.3892/or.6.4.727] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Preoperative neoadjuvant chemotherapy is essential for treatment of patients with breast cancer who have a large tumor mass and/or regional lymph node involvement, in terms of both tumor shrinkage and further improvement of the survival rate. In order to safely perform breast-conservation treatment for these patients, a detailed diagnostic procedure for precisely evaluating the therapeutic response is needed. Dynamic magnetic resonance imaging (MRI) is thought to be important in the evaluation of responses to neoadjuvant therapy in patients with considerably large tumors, however, few studies have detailed the changes, as depicted by dynamic MRI, that can be expected with neo-adjuvant chemotherapy. The purpose of this study was to document the changes that occur in response to neoadjuvant chemotherapy and to correlate them with the pathological findings observed in the surgical specimen. The study was performed at Kochi Medical School Hospital from 1995 to 1998. The series consisted of 31 patients with stage II and III breast cancer. Prior to and after 1-5 courses of neoadjuvant chemotherapy, dynamic MRI examinations were performed. Eight of the time-intensity curves for the 10 grade 1a tumors flattened during neoadjuvant chemotherapy, while two remained the same. Six of the curves flattened for the 14 grade 1b tumors, 7 remained the same, and one spiked. And for the seven grade 2 tumors, two of the curves flattened and five remained the same (p=0.0340). In the five grade 1 tumors, the mean after/before normalized peak signal intensity ratio was 0.42+/-0.22. In the 18 grade 2 and 8 grade 3 tumors, the mean normalized signal intensity ratios were 0.59+/-0.28, 0.88+/-0.10, respectively (p<0.05). In the 15 tumors that showed shrinkage of the linear enhancement during neo-adjuvant chemotherapy, 10 had no remarkable intraductal spreading and 9 had a negative surgical margin. In the 16 tumors that had no shrinkage of the linear enhancement during chemotherapy, 13 had remarkable intraductal spreading and 12 had a positive surgical margin (p<0.05). It is concluded that dynamic MRI is a valuable tool for determining tumor response and predicting a positive surgical margin. Breast-conservation treatment can be performed for these patients by meticulous assessment using such detailed diagnostic procedures after local tumor control by combined chemotherapy with high dose-intensity.
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Abstract
Cavernous hemangiomas rarely occur in the calvarium and most commonly present in middle-age. Although a congenital vascular disorder can theoretically cause a diploic lesion in any age group, a calvarial cavernous hemangioma has not been reported in newborn. A 4-month-old male infant presented with a large left parietal mass that had been present since birth. Total resection was performed. Pathological examination revealed a cavernous hemangioma developing within the diploic space adjacent to prior hemorrhages. Surgery was performed in this case because of the size and persistence of the lesion. Removal of tumors of a benign nature from the calvarium can be done safely. Cavernous hemangioma of the skull in a neonate should be considered as one of the differential diagnoses in the case of suspected ossified cephalohematoma.
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Hayase N, Fukumoto M, Yoshida D, Kariya S, Akagi N, Kurohara A, Hisa N, Yoshida S. Extraosseous metastases of hepatocellular carcinoma detection and therapeutic assessment with Tc-99m PMT SPECT. Clin Nucl Med 1999; 24:326-9. [PMID: 10232470 DOI: 10.1097/00003072-199905000-00006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Owing to recent advances in imaging technology and radiologic intervention, survival rates in patients with hepatocellular carcinoma have improved markedly. However, such prolonged survival has resulted in an increase in extrahepatic metastases. Tc-99m (Sn)-N-pyridoxyl-5-methyltryptophan (Tc-99m PMT), developed for hepatobiliary scintigraphy, has been used to visualize extrahepatic metastases, with most related reports limited to osseous metastases. The authors report two cases of hepatocellular cancer presenting as a hypopharyngeal metastasis and intraperitoneal dissemination along the tract of a fine-needle biopsy. Lesions undetectable on planar imaging could be visualized by Tc-99m PMT SPECT.
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Fukumoto M, Kurohara A, Yoshimura N, Yoshida D, Akagi N, Yoshida S. Relationship between ATP synthesis and 201Tl uptake in transformed and non-transformed cell lines. Nucl Med Commun 1998; 19:1169-75. [PMID: 9885807 DOI: 10.1097/00006231-199812000-00009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
201Tl tumour imaging is an established procedure, but little is known about its biological significance in transformed and non-transformed cells. In investigating the relationship between 201Tl uptake and intracellular ATP, we wished to determine whether the observed difference in delayed uptake is attributable to re-uptake via Na-K ATPase by using transformed (HeLa) and non-transformed (human fibroblast: hFB) cell lines. In each cell line, ATP was measured using the Luciferin-Luciferase method (LLM). The change in 201Tl uptake was assessed under conditions of mitochondrial suppression. Additionally, we assessed whether glycolysis is involved in 201Tl uptake under conditions of mitochondrial suppression and anaerobic incubation. Re-uptake via Na-K ATPase (HeLa vs hFB: 37.3 vs 24.2%) showed a clear difference in delayed uptake between HeLa and hFB. With HeLa, 201Tl uptake decreased biphasically with a reduction in ATP levels, whereas with hFB a linear correlation was evident. Despite the suppression of mitochondrial potential, a 5% glucose loading accelerated glycolysis with HeLa, and increased ATP (10.0 +/- 4.0%) and 201Tl uptake (16.2 +/- 3.0%). Conversely, neither ATP nor 201Tl uptake increased with hFB. Our results provide evidence that 201Tl uptake in transformed cells is related to enhanced glycolysis as well as mitochondrial ATP synthesis.
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Fukumoto M, Osaki Y, Yoshida D, Ogawa Y, Fujiwara M, Miyazaki N, Kurohara A, Akagi N, Yoshida S. Dual-isotope SPECT diagnosis of a skull-base metastasis causing isolated unilateral hypoglossal nerve palsy. Ann Nucl Med 1998; 12:213-6. [PMID: 9795708 DOI: 10.1007/bf03164848] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
We describe a 48-year-old female with an isolated unilateral hypoglossal nerve palsy caused by a skull base metastasis from breast cancer. The patient had a medical history of conservative breast therapy for breast cancer. Although the cause of such a neurological deficit includes various pathologies, the reports focusing on metastatic tumor have been limited in number. Radiologic investigation showed a mass involving both the right hypoglossal canal and the clival edge. Swelling of the hypoglossal nerve was observed in views including its canal. Three-dimensional CT images demonstrated the tumor protruding from the enlarged external orifice of the hypoglossal canal. In the present report we mentioned a nuclear medicine procedure to visualize and characterize the small, abnormal tissue in the skull base. Dual-isotope SPECT confirmed an abnormal uptake of 99mTc-HMDP around the hypoglossal canal and a 201Tl-positive elongated lesion running along the hypoglossal nerve.
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Fukumoto M, Tsuboi N, Yoshimura N, Kurohara A, Yoshida D, Inomata T, Yoshida S. Dual isotope SPECT in malignant Jacod's syndrome. Clin Nucl Med 1998; 23:437-40. [PMID: 9676948 DOI: 10.1097/00003072-199807000-00008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A case is presented of metastatic tumor causing Jacod's syndrome: total ophthalmoplegia, blindness, and trigeminal neuralgia. Abnormal soft tissue invading the orbital apex, anterior clinoid process, and cavernous sinus was difficult to assess by CT and MRI, but dual-isotope SPECT including Tc-99m HMDP bone imaging and Tl-201 tumor imaging strongly suggested that the cause of this rare syndrome was a small metastatic tumor. Although the therapeutic effect was also difficult to assess by anatomic imaging alone, dual-isotope SPECT after radiation therapy showed a decline of tumor viability.
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Fukumoto M, Kurohara A, Akagi N, Yoshida D, Yoshida S. Ga-67 visualization of the coexistence of two mucosa-associated lymphoid tissue (MALT) lymphomas in the thyroid and stomach. Clin Nucl Med 1998; 23:484. [PMID: 9676964 DOI: 10.1097/00003072-199807000-00024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Yoshida D, Harashima K, Node Y, Kojima T, Shimura T, Teramoto A. Malignant fibrous histiocytoma in the parietal bone. Neurol Med Chir (Tokyo) 1998; 38:359-62. [PMID: 9689820 DOI: 10.2176/nmc.38.359] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Malignant fibrous histiocytomas (MFHs) are mesenchymal tumors, usually arising in soft tissue of the extremities and are remarkably resistant to radiation and chemotherapy. A 45-year-old female presented with a rare case of MFH originating in the cranial bone manifesting as a lump in the left parietal region with no neurological abnormality. Neuroimaging revealed the presence of an osteolytic tumor in the left parietal bone invading into muscle and subdural region, penetrating through the dura. Selective external carotid angiography disclosed a marked tumor stain. Examination of the whole body excluded neoplastic disease elsewhere. The patient was treated by surgical excision, radiation, and two courses of multi-drug chemotherapy using cyclophosphamide, doxorubicin, vincristine, and prednisolone. Since there is no established treatment against this malignancy, a longer follow-up is necessary to determine whether cure has been achieved.
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Tsuboi N, Ogawa Y, Inomata T, Nishioka A, Yoshida D, Yoshida S, Moriki T. Dynamic MR appearance of adenoid cystic carcinoma of the breast in a 67-year-old female. RADIATION MEDICINE 1998; 16:225-8. [PMID: 9716005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We describe an adenoid cystic carcinoma on the right breast of a 67-year-old woman. Dynamic magnetic resonance (MR) imaging demonstrated a well-circumscribed round lesion with rapid and marked enhancement on T1-weighted images, without washout of the contrast agent. The enhanced area extended gradually from the margin to the center of the tumor, showing very late enhancement of the tumor center. The findings suggested a tumor with rich stromal component, including adenoid cystic carcinoma of a special type of breast cancer. Histological examination of a lumpectomy disclosed a well-circumscribed tumor consisting of ovoid, trabecular, and irregularly shaped 'nests' of tumor cells, with a focally cribriform pattern. The examination confirmed the diagnosis of adenoid cystic carcinoma of the breast.
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Yoshida D, Piepmeier JM, Bergenheim T, Henriksson R, Teramoto A. Suppression of matrix metalloproteinase-2-mediated cell invasion in U87MG, human glioma cells by anti-microtubule agent: in vitro study. Br J Cancer 1998; 77:21-5. [PMID: 9459141 PMCID: PMC2151249 DOI: 10.1038/bjc.1998.4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Because microtubules are important components of cell motility and intracellular transport, it is reasonable to propose that the depolymerizing effect of an antimicrotubule agent, estramustine, on glioma microtubules would modulate cell invasiveness. To determine whether matrix metalloproteinases, key factors in cell invasion, are affected by exposure to estramustine, a cell proliferation assay, a zymogram, a collagenolysis assay and a haptoinvasion assay were used in this study. The zymogram revealed that an activated (62 kDa) form of matrix metalloproteinase-2 diminished with increasing estramustine concentrations. The collagenolysis assay demonstrated approximately 2.5- to 21-fold lower rates of enzymatic activity suppressed by estramustine in a dose-dependent manner at estramustine concentrations of 1, 5, and 10 microM, compared with the control group. On the haptoinvasion assay, no statistically significant difference was seen in the 0.5 microM estramustine group, whereas 1-10 microM estramustine groups revealed significant suppression of invasion from 6 to 24 h in a dose-dependent manner. The results suggest that estramustine suppresses the invasion of U87MG cells in vitro using the decreasing available matrix metalloproteinase-2, an effect caused by the disassembly of microtubules. Suppression of the infiltrative capacity of malignant glioma cells could be of significant value in the treatment of this disease.
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Fukumoto M, Yoshida D, Yoshida S. Subcellular distribution of thallium: morphological and quantitative study in rat myocardium. Ann Nucl Med 1997; 11:291-7. [PMID: 9460520 DOI: 10.1007/bf03165296] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
UNLABELLED The purpose of this study is to determine the subcellular distribution of thallium (SDTl) by electron microscopy and a newly designed fixation method that makes insoluble grains of Tl visible. METHODS To obtain the high dose necessary for electron microscopic visualization, we employed TlCl instead of 201TlCl. EM was performed in fixed rat myocardium resected at 20 min (early phase) and 3 hr (delay phase) after intravenous injection of TlCl. To fix Tl in the cell, we used orthovanadate in our fixative. Atomic absorption spectroscopy (AAS) of Tl and quantification of subcellular distribution of 201Tl (SD201Tl) were studied to prove the propriety of our fixation. RESULTS AAS detected Tl in the Tl-loaded specimen but not in the control, indicating that Tl was the origin of the grains observed in the former. In the early phase, numerous grains were observed in mitochondria, sarcoplasmic reticulum (SR), myofibrils, and nuclei, but no such grains were visible in controls. In the delay phase, grains were retained in mitochondria, SR and nuclei, but not in myofibrils. Electron microscopic SDTl(%) correlated with SD201Tl(%) calculated from isolated fractions. CONCLUSION In both the early and delay phases, mitochondria are the major site of Tl and 201Tl uptake.
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Ogawa Y, Nishioka A, Tsuboi N, Yoshida D, Inomata T, Yoshida S, Moriki T, Toki T. Dynamic MR appearance of benign phyllodes tumor of the breast in a 20-year-old woman. RADIATION MEDICINE 1997; 15:247-50. [PMID: 9311043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We describe a 20-year-old woman with benign phyllodes tumor of the left breast. Dynamic MRI demonstrated a multi-lobulated lesion rapidly and markedly enhanced on dynamic studies of contrast-enhanced T1-weighted imaging without washout. Histological examination of an excisional biopsy specimen obtained under local anesthesia disclosed a well-circumscribed multi-lobulated lesion, confirming the diagnosis of benign phyllodes tumor of the breast.
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Abstract
A 21-year-old woman presented to the emergency department complaining of head, neck, and abdominal pain after being assaulted. She denied a previous history or significant symptoms of hyperthyroidism. The physical examination was remarkable for lethargy, low-grade fever, tachycardia, facial abrasions, swelling of the anterior neck, and a tremor. A diagnosis of thyroid storm was made. An extensive work up excluded other causes of the patient's tachycardia, altered mental status, and neck swelling. A review of the clinical features and management of thyroid storm is presented. Relatively minor trauma can be a precipitating event for thyroid storm.
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Piepmeier JM, Pedersen PE, Yoshida D, Greer C. Targeting microtubule-associated proteins in glioblastoma: a new strategy for selective therapy. Ann Surg Oncol 1996; 3:543-9. [PMID: 8915486 DOI: 10.1007/bf02306087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND This report presents a summary of preclinical data concerning the use of estramustine, an antimicrotubule agent against human glioblastoma cells. The strategy for the investigation of estramustine is predicated on the unique affinity of this agent for microtubule-associated proteins (MAPs). METHODS A series of laboratory investigations were used to demonstrate antiproliferative effects (MTT assay, colony forming assay, thymidine incorporation), cell cycle synchronization (flow cytometry), intracellular localization of binding sites (immunocytochemistry, electron microscopy), and activity in subcutaneous xenografts of human glioblastoma. RESULTS Estramustine has potent in vitro activity against human glioblastoma cells and can enhance the cytotoxic effects of ionizing radiation. Estramustine-binding protein was abundantly expressed in glioblastoma cells and may contribute to the selective effects of estramustine on neoplastic cells. This agent has activity against subcutaneous xenografts of human glioblastoma. Synthesized novel estrogen carbamates also can inhibit proliferation of glioblastoma cells. CONCLUSIONS Cytoskeletal elements (MAPs) of glioblastoma cells may provide a useful target for therapy with agents like estramustine because of the potent antimitotic effects of this agent and its affinity to a protein that is expressed in glioma cells. These observations have stimulated a search for other estrone carbamates with antimitotic activity that exceeds more conventional antimicrotubule agents.
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Abstract
Estramustine, a carbamate ester combining 17 beta-estradiol and nornitrogen mustard, has primarily been employed in the treatment of advanced prostatic carcinoma. However, a significant amount of preclinical investigation has been directed toward estramustine's activity against human malignant glioma. These studies have demonstrated that estramustine has potent antiproliferative effects against malignant glioma both in vitro and in vivo. Similar antimitotic effects also have been demonstrated for other carbamate esters. Estramustine does not impair proliferation of nonneoplastic astrocytes at concentrations that inhibit glioma cells. Although the reasons for this selective activity remain to be determined, it has been shown that malignant gliomas expresses an estramustine-specific binding site, estramustine-binding protein, more than brain tissue. In the clinical situation, an uptake and accumulation of estramustine in human glioma tissue have been demonstrated. Estramustine has been shown to enhance the cytotoxic effects of irradiation in relatively radioresistant glioma cells both in cell culture and in a rat glioma model. Estramustine has been regarded as mainly an anti-mitotic drug but recently other effects such as inhibition of DNA synthesis, induction of apoptosis, and membrane alterations have been shown. This report summarizes the preclinical observations concerning the effects of estramustine and related compounds on human malignant gliomas. These findings form the basis for proposing further laboratory and clinical investigation regarding estramustine and human malignant gliomas.
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Yoshida D, Piepmeier JM, Teramoto A. In vitro inhibition of cell proliferation, viability, and invasiveness in U87MG human glioblastoma cells by estramustine phosphate. Neurosurgery 1996; 39:360-6. [PMID: 8832674 DOI: 10.1097/00006123-199608000-00025] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVE Several determinants of cell motility are highly dependent on the cytoskeleton, in particular, microtubules. To our knowledge, there have been no previous reports regarding the anti-invasive ability by an antimicro-tubule agent, estramustine phosphate (EMP), on glioblastoma cell lines. We investigated the modulated cell proliferation and invasiveness by EMP in vitro. METHODS We determined the relative survival rate by cell proliferation assay and the percent survival fraction by monotetrazolium assay. Furthermore, an invasion index was used to quantify the migrating and invasive potential of the human glioblastoma cell line, U87MG, in Boiden's chamber with reconstituted basement membrane (Matrigel; Collaborative Research, Lexington, MA). RESULTS We found that 0.5 mumol/L EMP had no effect in any of the assays. Concentrations of 1, 5, and 10 mumol/L demonstrated a concentration- and time-dependent depression in all of the assays. A range of drug concentration of EMP, 1 to 10 mumol/L, in which cell invasiveness was successfully inhibited, was comparable with antiproliferative capacity. CONCLUSION The data add to the findings that EMP not only offers selective antiproliferative activity against glioblastoma but also reduces invasiveness, consistent with its main mechanism of action. Such findings form the basis for the development of agents that use non-DNA targets for the treatment of glioblastomas and may improve control over tumor proliferation and invasion.
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Murai Y, Yoshida D, Ikeda Y, Teramoto A, Kojima T, Ikakura K. Spontaneous intraventricular hemorrhage caused by lateral ventricular meningioma--case report. Neurol Med Chir (Tokyo) 1996; 36:586-9. [PMID: 8831203 DOI: 10.2176/nmc.36.586] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
A 39-year-old female presented with acute intraventricular hemorrhage manifesting as sudden onset of headache associated with gradually progressing somnolence and left oculomotor nerve paresis. Intraventricular hemorrhage occurred from a meningioma of the lateral ventricle. Computed tomography and magnetic resonance (MR) imaging revealed intraventricular hemorrhage and a mass in the right trigone. The tumor was totally removed. Her postoperative course was uneventful except for left homonymous hemianopia. The histological diagnosis was fibroblastic meningioma. The MR imaging was highly suggestive of hemorrhage from the tumor periphery.
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Lerman B, Yoshida D, Levitt MA. A prospective evaluation of the safety and efficacy of methohexital in the emergency department. Am J Emerg Med 1996; 14:351-4. [PMID: 8768153 DOI: 10.1016/s0735-6757(96)90047-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
A prospective observational study in an inner-city teaching hospital was conducted to evaluate the safety and efficacy of intravenous methohexital (MTX) in the emergency department (ED). Pulse oximetry, vital signs and Glasgow Coma Scale (GCS) scores were recorded serially for 30 minutes after the administration of MTX to 76 adult patients. Likert scales of 1 to 5 were used to record the physician's assessment of the adequacy of sedation and the patient's assessments of recall and pain of the procedure. Patients received an average of 88 +/- 21 mg of MTX for a variety of indications (orthopedic procedures, 78%; sedation for other procedures, 14%; intubation, 5%; and psychiatric interview, 3%). No patient had clinically significant changes in heart rate or blood pressure. Eight (10.5%) had apnea, although only one patient had oxygen saturations of less than 90%. Each episode was brief and easily managed with bag-valve-mask ventilation. Risk factors for apnea included a history of alcoholism (P = .0003) and recent recreational narcotic use (P = .0139). Patients were maximally sedated in an average of 37 +/- 42 seconds. In the subset of initially alert patients, GCS scores decreased from 15 at baseline to 5.9 +/- 4.5. The physician's assessment of the adequacy of sedation was excellent (4.7 +/- 0.7). Patients reported little recall (1.3 +/- 0.9) or pain (1.3 +/- 0.8). It was concluded that MTX caused clinically insignificant changes in hemodynamics or oxygenation, although respiratory depression did occur; significant respiratory depression was brief and easily managed. MTX provided rapid and excellent levels of sedation with little or no patient recall or pain.
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Fukumoto M, Yoshida S, Yoshida D, Kishimoto S. Dual-isotope SPECT of skull-base invasion of head and neck tumors. J Nucl Med 1995; 36:1741-6. [PMID: 7562037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
UNLABELLED Skull-base invasions of head and neck tumors were examined by simultaneous bone and tumor dual-isotope SPECT (S-SPECT) with 99mTc-hydroxy-methylene-diphosphonate (99mTc-HMDP) and 201Tl-chloride. The effectiveness and reliability of tumor diagnosis by this method was the primary interest in this study. METHODS Before S-SPECT imaging, a phantom experiment using dried skull-bone specimens was performed to establish anatomical details of the skull base with the SPECT camera. Radionuclide crosstalk, window widths and control patients were also examined prior to S-SPECT imaging. Twenty patients with suspected tumor invasion of the skull base underwent S-SPECT. RESULTS Preliminary experiments revealed that crosstalk effects could be disregarded with adequate window width and routine administrative doses of the radionuclides. S-SPECT detected bone destruction and the extent of tumor invasion for all 12 patients in whom skull-base involvement was diagnosed by CT or MRI. For the three patients in whom CT or MRI revealed no tumor invasion, the S-SPECT images did not show any abnormal accumulation in similar regions. In the remaining five patients without CT and MRI confirmation of skull-base invasion, the S-SPECT findings showed skull-base abnormalities in three. Tumor invasion was confirmed surgically or by clinical follow-up. The remaining two patients had negative S-SPECT images. CONCLUSION S-SPECT is an effective and reliable diagnostic technique for detecting tumor invasion in the complex bony regions of the skull base.
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Yoshida D, Ikeda Y, Nakazawa S. Copper chelation inhibits tumor angiogenesis in the experimental 9L gliosarcoma model. Neurosurgery 1995; 37:287-92; discussion 292-3. [PMID: 7477781 DOI: 10.1227/00006123-199508000-00014] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
To investigate the effects of copper (Cu)-depletion diet and D-penicillamine treatment (CDPT) on both tumor growth and angiogenesis, we studied Fischer-344 rats in which 9L gliosarcoma cells had been subcutaneously implanted. We focused primarily on the alteration of Cu contents and the vascular density. Compared with the normal diet group, the CDPT group showed a significant reduction of tumor weight and a decrease in Cu concentration. Furthermore, the CDPT group demonstrated smaller blood vessels with significantly lower vascular density. This decrease of tumor growth was achieved by angiosuppression. Our study indicated that CDPT selectively caused Cu chelation from the tumor tissue; the normal brain tissue did not show lower Cu concentration after the treatment. The prevention of tumor angiogenesis by this method may be very useful in cancer therapy and may help elucidate the microenvironmental mechanisms for cancer cells.
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Yoshida D, Ikeda Y, Nakazawa S. Suppression of tumor growth in experimental 9L gliosarcoma model by copper depletion. Neurol Med Chir (Tokyo) 1995; 35:133-5. [PMID: 7770105 DOI: 10.2176/nmc.35.133] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The effect of copper (Cu) depletion on the growth of tumors was investigated in a rat brain tumor model. 9L gliosarcoma cells were injected subcutaneously in 5-week-old male Fischer-344 rats. The control group (n = 18) received a normal diet throughout the experiment and the depletion group (n = 18) received a Cu-deficient diet starting 3 weeks prior to tumor implantation, and 2 mg of D-penicillamine orally, once daily, on the 3 days before and after implantation. Six animals from each group were killed at 1, 2, and 3 weeks following the implantation to measure the tumor weights and determine the tissue Cu concentration by atomic absorption spectrophotometry. The tumor weights increased much more rapidly in the control than in the depletion group. The Cu concentrations in tumor tissue of the depletion group were significantly lower than in the control group. There was no statistical significance in Cu concentration in the brain tissues of the control and depletion groups. Our study indicated that a Cu-deficient diet and D-penicillamine treatment can inhibit subcutaneous glioma growth in this rat model.
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Hata Y, Morita S, Hisa N, Fujiwara Y, Higaki T, Kamiike O, Yoshida D, Yoshida S. [Evaluation of arterial infusion chemotherapy for advanced gallbladder cancer using implantable port]. Gan To Kagaku Ryoho 1994; 21:2639-43. [PMID: 7979425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Seven patients with advanced gallbladder cancer were treated by arterial infusion chemotherapy. Five patients had unresectable tumor, and two had liver metastases after resection of primary tumor. The response rate was 42.9% (3 PR), and the 1-year survival rate was 35.7%. No severe side effect was found. We conclude that arterial infusion chemotherapy is effective for advanced gallbladder cancer, and that a more effective regimen and adjuvant therapy should be established.
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Yoshida D, Cornell-Bell A, Piepmeier JM. Selective antimitotic effects of estramustine correlate with its antimicrotubule properties on glioblastoma and astrocytes. Neurosurgery 1994; 34:863-7; discussion 867-8. [PMID: 8052384 DOI: 10.1227/00006123-199405000-00012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Estramustine is an estradiol-based agent that accumulates in cells containing estramustine binding protein. Previous studies have shown that this binding site is expressed in human glioblastoma cells and that estramustine accumulates in glioma cells, resulting in a concentration-dependent inhibition of proliferation. We have shown that estramustine treatment results in a rapid inhibition of deoxyribonucleic acid synthesis (within 4 h) in human glioblastoma cells associated with an alteration of cell size and shape, consistent with its known antimicrotubule activity. To extend these findings, we performed an immunohistochemical analysis of microtubules with a monoclonal antibody to beta-tubulin, using a colorimetric assay with 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide to measure the antimitotic effects of estramustine on both human glioblastoma and astrocyte cultures. Within 4 hours, estramustine (10 mumol/L) caused a dramatic alteration in the tubulin staining in glioma cells, characterized by a disorganization in microtubules. Cell shape and microtubule staining in astrocytes were relatively preserved. Estramustine had a concentration-dependent cytotoxic effect in tumor cultures, whereas it had no effect on astrocyte viability at any concentration. Differences in the antimitotic effects do not appear to be related to variations in proliferation rates among these different types of cells. These data suggest that although estramustine is a potent inhibitor of proliferation in glioblastoma cells, it has modest antiproliferative effects on astrocytes and its selective activity is closely correlated with its antimicrotubule properties.
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Yoshida D, Piepmeier J, Weinstein M. Estramustine sensitizes human glioblastoma cells to irradiation. Cancer Res 1994; 54:1415-7. [PMID: 8137240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Estramustine is an estradiol-based antimicrotubule agent that accumulates in malignant glioma cells, resulting in a concentration-dependent inhibition of proliferation. This agent has been shown to synchronize human glioma cells at G2-M consistent with its known effects on the mitotic spindle and potentially could be used as a radiation enhancer. We determined the effects of estramustine on the cell cycle of glioblastoma cells by flow cytometry. These findings were compared with clonogenic survival in cells pretreated with varying concentrations of estramustine prior to irradiation. These experiments indicated that 24 h treatment with 1 microM estramustine had no effect on the percentage of G2-M cells and did not enhance the cytotoxic effects of radiation while 10 microM estramustine increased the G2-M fraction by 100% associated with a potentiation factor as high as 8.5 and a relative radiation sensitivity at 70% cytotoxicity of 5.2 compared with 15.4 for control cells. Estramustine can be administered p.o. on a daily schedule with minimal systemic toxicity. These data suggest that estramustine may be an effective radiation enhancer for glioblastoma.
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Yoshida D, Chen MN, Awaya S, Nakazawa S. Cranial metastasis of hepatocellular carcinoma in a female--case report. Neurol Med Chir (Tokyo) 1993; 33:839-44. [PMID: 7512232 DOI: 10.2176/nmc.33.839] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
A 78-year-old female presented with swelling and severe pain in the left forehead secondary to a simple head injury received 1 month previously. On admission, neurological examination was normal. Plain skull x-ray films and computed tomography showed an osteolytic and well-defined mass in the left frontal bone. Bone scintigraphy showed high-uptake areas in the right lower ribs and fifth lumbar vertebra. Blood tests showed slight liver dysfunction and a high alpha-fetoprotein level. Abdominal computed tomography showed a huge mass within the liver. Left common carotid angiography disclosed the enlargement of several feeding arteries arising from the external carotid artery with tumor staining. The bone tumor was removed for histological diagnosis and to reduce the localized pain. The histological diagnosis was a cranial metastasis from hepatocellular carcinoma. She died of ruptured varicose veins of the esophagus approximately 8 months after surgery. Surgery for cranial metastasis from hepatic cancer is only indicated when localized pain or hemorrhage threaten the quality of life.
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