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1.
Pharmazie ; 75(5): 191-194, 2020 05 01.
Article in English | MEDLINE | ID: mdl-32393426

ABSTRACT

Juzentaihoto is a herbal medicine with reported anti-inflammatory effects, and it is predicted to improve inflammation and insulin sensitivity within obesity. In the present study, juzentaihoto hot water extract (JTT) was administered to obese type 2 diabetic model mice (KKAy) for 56 days. In addition, the effects of JTT on the adipose tissue, glucose metabolism, and blood lipids were evaluated for examining its impact on insulin sensitivity and obesity. As a result of JTT administration, KKAy mice exhibited suppressed adipocyte hypertrophy, decreased the mRNA levels of tumor necrosis factor α, and increased the mRNA levels of adiponectin in epididymal fat tissue. In addition, fasting blood glucose levels, blood triglyceride, and total cholesterol decreased. In summary, these data indicated that JTT administration suppressed the production of inflammatory cytokines and increased adiponectin levels in the adipose tissue. Therefore, with improved insulin sensitivity, blood glucose, and lipid decreased.


Subject(s)
Diabetes Mellitus, Experimental/drug therapy , Diabetes Mellitus, Type 2/drug therapy , Drugs, Chinese Herbal/pharmacology , Hyperglycemia/drug therapy , Adipocytes/drug effects , Adipocytes/pathology , Adiponectin/metabolism , Adipose Tissue/drug effects , Adipose Tissue/metabolism , Animals , Blood Glucose/drug effects , Hypertrophy/drug therapy , Insulin Resistance , Lipids/chemistry , Male , Mice , Mice, Inbred C57BL , Obesity/complications , Obesity/drug therapy
2.
Endocr Relat Cancer ; 13(1): 233-50, 2006 Mar.
Article in English | MEDLINE | ID: mdl-16601291

ABSTRACT

It has been reported that agonists of peroxisome proliferator-activated receptor gamma (PPARgamma) inhibit proliferation of breast carcinoma cells, but the biological significance of PPARgamma remains undetermined in human breast carcinomas. Therefore, we immunolocalized PPARgamma in 238 human breast carcinoma tissues. PPARgamma immunoreactivity was detected in 42% of carcinomas, and was significantly associated with the status of estrogen receptor (ER) alpha, ERbeta, progesterone receptor, retinoic X receptors, p21 or p27, and negatively correlated with histological grade or cyclooxygenase-2 status. PPARgamma immunoreactivity was significantly associated with an improved clinical outcome of breast carcinoma patients by univariate analysis, and multivariate analysis demonstrated that PPARgamma immunoreactivity was an independent prognostic factor for overall survival in ERalpha-positive patients. We then examined possible mechanisms of modulation by PPARgamma on estrogenic actions in MCF-7 breast carcinoma cells. A PPARgamma activator, 15-deoxy-Delta(12,14)- prostaglandin J(2) (15d-PGJ(2)), significantly inhibited estrogen-responsive element-dependent transactivation by estradiol in MCF-7 cells, which was blocked by addition of a PPARgamma antagonist GW9662. Subsequent study, employing a custom-made microarray focused on estrogen-responsive genes, revealed that mRNA expression was significantly regulated by estradiol in 49 genes, but this significance vanished on addition of 15d-PGJ(2) in 16 out of 49 (33%) genes. These findings were confirmed by real-time PCR in 11 genes. 15d-PGJ(2) significantly inhibited estrogen-mediated proliferation of MCF-7 cells, and caused accumulation of p21 and p27 protein. These results suggest that PPARgamma is mainly expressed in well-differentiated and ER-positive breast carcinomas, and modulates estrogenic actions.


Subject(s)
Breast Neoplasms/metabolism , Estrogens/pharmacology , Gene Expression Regulation, Neoplastic , PPAR gamma/metabolism , Adult , Aged , Aged, 80 and over , Apoptosis , Breast Neoplasms/drug therapy , Breast Neoplasms/genetics , Carcinoma, Ductal, Breast/drug therapy , Carcinoma, Ductal, Breast/genetics , Carcinoma, Ductal, Breast/metabolism , Cell Proliferation , Chemotherapy, Adjuvant , Cyclin-Dependent Kinase Inhibitor p21/genetics , Cyclin-Dependent Kinase Inhibitor p21/metabolism , Female , Humans , Immunologic Factors/pharmacology , Middle Aged , Neoplasm Invasiveness/pathology , Oligonucleotide Array Sequence Analysis , PPAR gamma/genetics , Prostaglandin D2/analogs & derivatives , Prostaglandin D2/pharmacology , Receptors, Estrogen/genetics , Receptors, Estrogen/metabolism , Reverse Transcriptase Polymerase Chain Reaction , Transcriptional Activation , Tumor Cells, Cultured
3.
Int Immunopharmacol ; 2(8): 1205-11, 2002 Jul.
Article in English | MEDLINE | ID: mdl-12349957

ABSTRACT

We investigated the immunopotentiating activities of boiled water-soluble extracts from desiccated Agaricus blazei Murill (ABM). Effect of ABM extract on antibody production was investigated by method of hemolytic plaque-forming cells (PFC) against sheep red blood cells (SRBC) antigen. ABM extracts significantly (p<0.01) increased the number of PFC in spleen with intraperitoneal administration at doses of 25 mg/kg as compared with control group. The populations of Mac-1- or CD25-positive cells significantly (p<0.01, p<0.001) increased, but in CD19-positive cells, there were no differences in ABM-treated mice as compared with control mice. The expressions of IL-6 and IL-1beta mRNA were augmented by ABM extract in both peritoneal macrophages and spleen cells. These results suggested that ABM extract might be an effective stimulator for T cell and macrophage to IL-1beta and IL-6 release, resulting in augmentation of antibody production against SRBC antigen.


Subject(s)
Agaricus , Antibody-Producing Cells/drug effects , Plant Extracts/pharmacology , Animals , Antibody-Producing Cells/immunology , Antibody-Producing Cells/metabolism , Female , Hot Temperature , Mice , Mice, Inbred C57BL , Plant Extracts/isolation & purification , Spleen/drug effects , Spleen/immunology , Spleen/metabolism , Water
4.
Kyobu Geka ; 55(9): 763-7, 2002 Aug.
Article in Japanese | MEDLINE | ID: mdl-12174620

ABSTRACT

In cardiac surgery, several studies have shown bacterial contamination rates of intraoperative salvaged blood ranging from 12.7 to 96.8%. We evaluated the relation between intraoperative salvaged blood transfusion produced by the Cell Saver 5 device (Haemonetics Corp., Braintree, MA, USA) and postoperative infection determined by bacteriological study and the postoperative clinical course after cardiac surgery. Seven cases of cardiac surgery were investigated by bacteriological study. Although bacteria were cultured from all salvaged blood, no bacteria were cultured from the patients' blood 24 hours after salvaged blood infusion. Another 26 patients who underwent cardiac surgery, were divided into groups: group CS (n = 15) with salvaged blood transfusion after operation and group N (n = 11) without salvaged blood transfusion, and were evaluated in relation to the postoperative clinical course. There were no statistically significant differences between group CS and group N in the data of WBC, CRP and maximum body temperature. One case of deep sternal wound infection and 2 cases of local wound infection were observed in group CS, but none in group N (p = 0.18). These complications were treated by primary closure without muscle flaps. We conclude that salvaged blood autotransfusion was not related to postoperative infections in cardiac surgery.


Subject(s)
Bacterial Infections/etiology , Blood Transfusion, Autologous/instrumentation , Antibiotic Prophylaxis , Blood/microbiology , Blood Transfusion, Autologous/adverse effects , Cardiac Surgical Procedures , Humans , Operating Rooms , Postoperative Complications , Staphylococcus/isolation & purification
5.
Biol Pharm Bull ; 24(9): 1009-11, 2001 Sep.
Article in English | MEDLINE | ID: mdl-11558559

ABSTRACT

The antidiabetic activity of the rhizoma of Anemarrhena asphodeloides was investigated in KK-Ay mice, an animal model of genetic type 2 diabetes. The water extract of the rhizoma (AA) (90 mg/kg) reduced blood glucose levels from 570 +/- 29 to 401 +/- 59 mg/dl 7 h after oral administration (p<0.05) and also tended to reduce serum insulin levels in KK-Ay mice. AA-treated KK-Ay mice had significantly reduced blood glucose levels in an insulin tolerance test. Based on these results, the antidiabetic mechanism of AA may be due to decreased insulin resistance. In addition, the active components of AA were confirmed to be mangiferin and its glucoside.


Subject(s)
Diabetes Mellitus, Type 2/drug therapy , Hypoglycemic Agents/therapeutic use , Phytotherapy , Plant Extracts/pharmacology , Plants, Medicinal/chemistry , Xanthenes/pharmacology , Xanthones , Animals , Diabetes Mellitus, Type 2/genetics , Dose-Response Relationship, Drug , Glucose Tolerance Test , Glucosides/pharmacology , Mice , Tolbutamide/pharmacology
6.
J Nat Prod ; 64(8): 1044-7, 2001 Aug.
Article in English | MEDLINE | ID: mdl-11520223

ABSTRACT

Three new epoxytriterpenes, 14 beta,15 beta-epoxy-21 beta-hydroxyserratan-3-one (1), 13 alpha,14 alpha-epoxy-21 alpha-methoxyserratan-3-one (2), and 13 alpha,14 alpha-epoxy-3 beta-methoxyserratan-21 beta-ol (3), were isolated together with two known triterpenoids, 21 alpha-methoxyserrat-13-en-3-one (4) and 21 beta-hydroxyserrat-14-en-3-one (5), from the cuticle of Picea jezoensis var. jezoensis. The structures of these new compounds were established on the basis of spectral data (NMR, MS) and single-crystal X-ray analyses (1 and 2) and partial synthesis (2 and 3).


Subject(s)
Epoxy Compounds/isolation & purification , Plants, Medicinal/chemistry , Triterpenes/isolation & purification , Chromatography, Thin Layer , Crystallography, X-Ray , Epoxy Compounds/chemistry , Japan , Magnetic Resonance Spectroscopy , Mass Spectrometry , Molecular Conformation , Molecular Structure , Stereoisomerism , Triterpenes/chemistry
7.
Kyobu Geka ; 54(9): 753-7, 2001 Aug.
Article in Japanese | MEDLINE | ID: mdl-11517544

ABSTRACT

We investigated sources of bacterial contamination of intraoperative salvaged blood producted by autologous transfusions device (CS; CELL SAVER 5, Heamonetics Corp., Braintree, MA). Eleven patients undergone open heart surgeries including 2 emergency operations with a median sternotomy enrolled in this study. Blood samples were drawn from salvaged blood bags. Airborne contaminants (AB) were collected by a blood agar plate put besides the operation bed for 30 minutes. The median wounds samples were collected by a swab. Bacterial growth was detected in 81.8% of salvaged blood samples. Twenty-nine bacterium were isolated from CS, 72.4% of those were Staphylococci. 9.1% of sample was positive in wound swabs. Forty bacterium were isolated from plate cultures. 65% of them were Staphylococci. Staphylococcus epidermidis and coagulase negative Staphylococcus isolated both CS and AB in the 2 cases had the same identify codes, and incubated from several AB cultures. Corynebacterium sp. is also isolated from both CS and AB cultures in other 2 same cases. In 7 out of 8 cases (87.5%), from which Staphylococci isolated in CS, the Staphylococci were cultured from AB in not the same but the other cases. In conclusion, highly incidence of the identification in identical code of Staphylococci indicated that the main source of CS contamination was highly suspected to AB.


Subject(s)
Air Microbiology , Bacteria/isolation & purification , Blood Specimen Collection/adverse effects , Blood Transfusion, Autologous/instrumentation , Cardiac Surgical Procedures/methods , Skin/microbiology , Aortic Valve/surgery , Blood Preservation , Coronary Artery Bypass , Humans , Operating Rooms
8.
Percept Mot Skills ; 92(3 Pt 1): 795-802, 2001 Jun.
Article in English | MEDLINE | ID: mdl-11453207

ABSTRACT

This study was designed to examine effects of somatosensory feedback on variations of intertap interval and muscle force in finger-tapping sequences over 10 minutes. Although intertap intervals were decreased on the massed task as the time passed, the intervals were constant in the distributed task. In finger-tapping for a long time, impulses perhaps circulate within the loop circuits between the cerebral motor cortex and the peripheral nerve and subsequently increase further the excitability of the circuits. This increase in the excitability within the circuits may shorten the interval and increase variation of the interval. On the other hand, although peak force increased up to the 5-min. mark on the massed task, the force decreased after the 6-min. mark. This increase of force also may be produced by increasing activation of the corticoperipheral loop circuits. Although the decrease of force was perhaps produced by the fatigue of finger muscles for tapping during a few minutes, fatigue appeared more clearly in muscle force than in timing control. However, the force and the variation were constant in the distributed task.


Subject(s)
Biofeedback, Psychology/physiology , Fingers/physiology , Movement/physiology , Adult , Humans , Male , Muscle, Skeletal/physiology , Periodicity
9.
Neurol Med Chir (Tokyo) ; 41(3): 107-13; discussion 113-4, 2001 Mar.
Article in English | MEDLINE | ID: mdl-11372552

ABSTRACT

Pharmacological treatment for cerebral ischemia cannot attain sufficiently high concentrations of the drugs in the cerebrospinal fluid (CSF) without precipitating systemic side effects. The objective of this study is the development of a liposomal drug delivery system that maintains effective concentrations of protein kinase inhibitors fasudil in the CSF, resulting in neuroprotection against cerebral ischemia. Focal cerebral ischemia in rats was induced by middle cerebral artery occlusion using an intraluminal suture technique. Treated rats received 0.25 mg liposome-entrapped fasudil via the cisterna magna 2 hours after ischemic insult. Control rats received drug-free liposomes. Neurological condition and the infarct size were assessed at 24 and 72 hours after ischemia. The concentration of liposome-entrapped fasudil in the CSF was measured before sacrifice. Treated animals showed significantly improved neurological outcomes after the 24-hour observation period compared to the control group (p < 0.001). Treatment with 0.25 mg liposomal fasudil resulted in a reduction in the infarct area (24 hours: 29.0 +/- 4.4%, 72 hours: 28.1 +/- 3.9% of total brain slices) compared to controls (49.6 +/- 4.6%, p < 0.001), but there was no statistical difference between 24 and 72 hours. At 24 hours post-administration, CSF concentrations of liposome-entrapped fasudil were 45.4 +/- 31.5 micrograms/ml (20% of the injected dose). A single intrathecal injection of liposomal fasudil can maintain a therapeutic drug concentration in the CSF over a period of time, significantly decreasing infarct size in a rat model of acute ischemia.


Subject(s)
1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine/analogs & derivatives , 1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine/therapeutic use , Brain Ischemia/drug therapy , Neuroprotective Agents/therapeutic use , 1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine/administration & dosage , 1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine/pharmacokinetics , 1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine/toxicity , Animals , Brain Damage, Chronic/etiology , Brain Damage, Chronic/prevention & control , Brain Ischemia/etiology , Cerebral Infarction/etiology , Cerebral Infarction/pathology , Cerebral Infarction/prevention & control , Cisterna Magna , Drug Carriers , Drug Evaluation, Preclinical , Infarction, Middle Cerebral Artery/complications , Injections, Spinal , Liposomes , Male , Neuroprotective Agents/administration & dosage , Neuroprotective Agents/pharmacokinetics , Neuroprotective Agents/toxicity , Rats , Rats, Sprague-Dawley
10.
Phytomedicine ; 8(2): 85-7, 2001 Mar.
Article in English | MEDLINE | ID: mdl-11315760

ABSTRACT

Mangiferin (MF) isolated from Anemarrhena asphodeloides Bunge rhizome, was tested for antidiabetic activity in KK-Ay mice, an animal model of type-2 diabetes. MF lowered the blood glucose level of KK-Ay mice 3 weeks after oral administration (p < 0.01). However, no effect on the blood glucose level in normal mice was seen, indicating that MF could be useful in treating type-2 diabetes. In addition, MF improved hyperinsulinemia and, on insulin tolerance test, reduced blood glucose levels of KK-Ay mice. From these findings, it seems likely that MF exerts its antidiabetic activity by decreasing insulin resistance.


Subject(s)
Diabetes Mellitus, Type 2/drug therapy , Hypoglycemic Agents/therapeutic use , Xanthenes/therapeutic use , Xanthones , Administration, Oral , Animals , Blood Glucose/analysis , Blood Glucose/drug effects , Disease Models, Animal , Glucosides/chemistry , Glucosides/therapeutic use , Hyperinsulinism/drug therapy , Hypoglycemic Agents/chemistry , Insulin/analysis , Insulin Resistance , Magnoliopsida/therapeutic use , Male , Mice , Phytotherapy , Plant Extracts , Xanthenes/chemistry
11.
Neurol Med Chir (Tokyo) ; 40(10): 532-5, 2000 Oct.
Article in English | MEDLINE | ID: mdl-11098641

ABSTRACT

Langerhans cell histiocytosis rarely presents as a solitary lesion in the pituitary-hypothalamic region, and is indistinguishable from germinoma, which occurs much more frequently, especially in Japanese. A 14-year-old girl and a 9-year-old girl presented with polydipsia and polyuria as the initial symptoms. Magnetic resonance (MR) imaging demonstrated a round mass at the pituitary stalk appearing as isointense on T1-weighted imaging and hyperintense on T2-weighted imaging. Endocrinological examination revealed mild hypopituitarism with central diabetes insipidus. Both patients underwent open craniotomy. Histological examination revealed granulomatous tissue with eosinophil infiltration and frequent Langerhans histiocyte clustering, compatible with the diagnosis of Langerhans cell histiocytosis. Low-dose local irradiation of 20 Gy was administered. First patient was followed up for 8 years, and her hypopituitarism gradually improved to a minimal level with only amenorrhea as the residual symptom. Recent MR imaging showed no residual mass at the region. Second patient was followed up for 15 months, and her diabetes insipidus is stable. MR imaging performed 5 months after the treatment showed marked reduction of the mass. These cases reemphasize the importance of histological diagnosis for lesions with similar neuroimaging appearances. Biopsy and low-dose irradiation are an effective treatment for this rare and essentially benign lesion, as opposed to attempting total removal of the mass.


Subject(s)
Histiocytosis, Langerhans-Cell/diagnosis , Hypothalamic Diseases/diagnosis , Pituitary Diseases/diagnosis , Adolescent , Biopsy , Child , Female , Histiocytosis, Langerhans-Cell/pathology , Histiocytosis, Langerhans-Cell/radiotherapy , Humans , Hypothalamic Diseases/pathology , Hypothalamic Diseases/radiotherapy , Hypothalamus/pathology , Magnetic Resonance Imaging , Pituitary Diseases/pathology , Pituitary Diseases/radiotherapy , Pituitary Gland/pathology
12.
Gan To Kagaku Ryoho ; 27(12): 1997-2000, 2000 Oct.
Article in Japanese | MEDLINE | ID: mdl-11086463

ABSTRACT

In 30 patients with gastric cancer metastasizing to the liver over the past 15 years at our hospital the primary foci in the stomach could be resected in a curative manner. The authors report herein three long surviving patients in this series. [Case 1] A 49-year-old male. Distal gastrectomy was performed in November 1984. Metastasis to the liver occurred in June 1986. The right lobe of the liver was resected in November 1987 after transcatheter arterial embolization (TAE). Although hepatic arterial infusion chemotherapy was conducted, the cancer metastasized to the whole body, and the patient died in December 1991. [Case 2] A 65-year-old female. Distal gastrectomy was performed in July 1994. The left hepatic lobe and segment 5 in the right lobe were resected in June 1995. Although TAE was performed six times starting in December 1996, the patient died of hepatic failure in July 1999. [Case 3] A 73-year-old male. This patient simultaneously received distal gastrectomy and extended resection of the posterior hepatic segments in September 1997. Cancer recurred in the remaining liver in July 1998. Although microwave coagulation therapy (MCT) and TAE were performed, the patient died of hepatic failure in January 2000. In these patients who survived for a long period, the primary focus was well-differentiated adenocarcinoma under sufficient local control with metastasis limited to the nearest regional lymph nodes (group 1 lymph nodes). The patients could undergo interdisciplinary therapy, including hepatectomy, MCT, TAE, and hepatic arterial infusion chemotherapy.


Subject(s)
Adenocarcinoma/secondary , Adenocarcinoma/therapy , Liver Neoplasms/secondary , Liver Neoplasms/therapy , Stomach Neoplasms/pathology , Stomach Neoplasms/therapy , Aged , Antineoplastic Agents/administration & dosage , Combined Modality Therapy , Doxorubicin/administration & dosage , Electrocoagulation , Embolization, Therapeutic , Female , Gastrectomy , Humans , Infusions, Intra-Arterial , Iodized Oil/administration & dosage , Male , Middle Aged , Stomach Neoplasms/surgery , Survivors
13.
Nihon Jibiinkoka Gakkai Kaiho ; 103(3): 199-205, 2000 Mar.
Article in Japanese | MEDLINE | ID: mdl-10774188

ABSTRACT

Patients with pollinosis sometimes complain of oral symptoms (itching and tingling with or without edema of the lips, mouth and tongue) after eating fresh fruits and vegetables. This condition has been termed Oral Allergy Syndrome (OAS). Twenty-three patients with Japanese cedar pollinosis and OAS for fresh fruits and vegetables were included in this study. Their mean age was 31.3 years (range = 5 to 62). The fruits that caused OAS in these patients included melon, apple, peach, and kiwi fruit. Most patients with OAS exhibited hypersensitivity to more than two foods. Specific IgE antibodies to inhaled allergens of mite, Japanese cedar pollen, birch pollen, melon, apple, peach, and kiwi were evaluated using the Pharmacia CAP system. Eleven of the 16 subjects with specific IgE antibodies for birch pollen, did not suffer symptoms during the birch and alder pollen season. In subjects with specific IgE antibodies for fruits, 13 out of 20 patients showed specific IgE antibodies for apple, and 8 out of 9 patients with OAS for apples were also positive for specific IgE antibodies for apples. On the other hand, 17 patients had no specific IgE antibodies for melon, and only two patients and one patient showed specific IgE antibodies for kiwi fruit and peach, respectively. These results suggest that the evaluation of specific IgE antibodies to birch pollen and apple may be useful for diagnosing OAS in patients with Japanese cedar pollinosis.


Subject(s)
Food Hypersensitivity/complications , Rhinitis, Allergic, Seasonal/complications , Adult , Antibodies/blood , Child , Child, Preschool , Female , Fruit , Humans , Immunoglobulin E/blood , Male , Middle Aged , Pollen , Trees , Vegetables
14.
Int J Cancer ; 86(2): 197-203, 2000 Apr 15.
Article in English | MEDLINE | ID: mdl-10738246

ABSTRACT

A tumor-suppressor gene, p16(INK4), which is deleted or mutated in tumors, regulates cell-cycle progression through a G(1)-S restriction point by inhibiting CDK4(CDK6)/cyclin-D-mediated phosphorylation of pRb. We have found that ectopic p16(INK4) expression increased cellular sensitivity of human non-small-cell-lung-cancer (NSCLC) A549 cells to a selective growth-inhibitory effect induced by the topoisomerase-I inhibitor 11, 7-ethyl-10-[4-(1-piperidino)-1-piperidino] carbonyloxy camptothecin (CPT-11) in vitro. In this study, we observed enhanced apoptosis characterized by DNA fragmentation in A549 cells transfected with p16(INK4) cDNA (A549/p16-1) and treated with CPT-11. This apoptosis was suppressed by the inhibitor of interleukin-1beta-converting enzyme (ICE/caspase-1) or ICE-like proteases, Z-Asp-CH2-DCB, as determined by DNA fragmentation and proteolytic cleavage of poly(ADP-ribose) polymerase, a natural substrate for CPP32/caspase-3. In A549/p16-1 cells, cytosolic peptidase activities that cleaved Z-DEVD-7-amino-4-trifluoromethylcoumarin increased during CPT-11-induced apoptosis and were suppressed by a highly specific caspase-3 and caspase-3-like inhibitor, Z-DEVD-fluoromethylketone. These findings indicate that p16(INK) is positively involved in the activation pathway of the caspase-3 induced by CPT-11. The increased delay in S-phase progression and subsequent induction of apoptosis were observed in CPT-11-treated A549/p16-1 cells on the basis of DNA histograms. Specific down-regulation of the cyclin-A protein level in A549/p16-1 cells was observed after CPT-11-treatment, whereas cyclin B, cdk2, and cdc2 protein levels were unaffected. These results suggest that ectopic p16(INK4) expression inappropriately decreases cyclin A and thereby terminates CPT-11-induced G(2)/M accumulation, which is followed by increased apoptosis in p16(INK4)-expressing A549 cells.


Subject(s)
Apoptosis/drug effects , Camptothecin/analogs & derivatives , Carcinoma, Non-Small-Cell Lung/pathology , Cyclin-Dependent Kinase Inhibitor p16/genetics , Lung Neoplasms/pathology , S Phase , Antineoplastic Agents, Phytogenic/pharmacology , Aspartic Acid/analogs & derivatives , Aspartic Acid/pharmacology , Camptothecin/pharmacology , Caspase 3 , Caspase Inhibitors , Caspases/metabolism , Cyclin A/metabolism , DNA Fragmentation , DNA, Complementary , Enzyme Activation , Gene Expression , Humans , Irinotecan , Protease Inhibitors/pharmacology , Time Factors , Transfection , Tumor Cells, Cultured
15.
Skeletal Radiol ; 28(5): 290-3, 1999 May.
Article in English | MEDLINE | ID: mdl-10424338

ABSTRACT

We report on a case of clear cell chondrosarcoma (CCCS) of the left iliac bone in a 12-year-old skeletally immature boy. Radiographic examination revealed an aggressive osteolytic lesion with areas of mineralization. Fluid-fluid levels were seen on T2-weighted MR images. Laboratory data showed slight elevation of serum alkaline phosphatase. The biopsy specimen showed histological features of CCCS with some resemblance to osteosarcoma, such as prominent irregular osteoid formation among clear tumor cells. Surgical treatment was accomplished without pre- or post-operative chemotherapy. Because of the patient's age, elevated serum alkaline phosphatase, and histopathology with prominent osteoid production, this case could be confused with osteosarcoma. Although CCCS is an extremely rare bone tumor in children, it is important to be aware that it may arise in a skeletally immature patient. CCCS, unlike osteosarcoma, is not treated with neo-adjuvant chemotherapy.


Subject(s)
Bone Neoplasms , Chondrosarcoma , Ilium , Bone Neoplasms/diagnosis , Child , Chondrosarcoma/diagnosis , Diagnosis, Differential , Growth Plate , Humans , Ilium/pathology , Magnetic Resonance Imaging , Male , Tomography, X-Ray Computed
16.
J Gastroenterol ; 33(6): 872-5, 1998 Dec.
Article in English | MEDLINE | ID: mdl-9853563

ABSTRACT

A 66-year-old Japanese man had a positive fecal occult blood test at a regular check-up, and a large polypoid mass was detected in the cecum by barium enema study. Colonoscopy showed a submucosal tumor with ulcer protruding into the cecal lumen. A large-forceps biopsy specimen was taken from the bottom of the ulcer. With the tentative diagnosis of neurogenic tumor, ileocecal resection was performed. The tumor showed spindle-cell proliferation in a concentric or fascicular pattern. Immunohistochemically, the tumor cells were diffusely positive for S-100 protein, and they had intracytoplasmic periodic acid Schiff (PAS)-positive crystalloids. The mitosis count was low (about 1 per 20 high-power fields). The pathological diagnosis of this tumor was benign gastrointestinal schwannoma. A large number of schwannoma cases have been reported since 1910 when Verocay reported it as a true tumor that stemmed from Schwann cells and did not contain neuroganglion cells. However, gastrointestinal schwannomas are rare, and schwannomas of the large intestine are extremely rare. We reviewed 40 cases already reported in Japan and this present case in order to clarify the clinicopathological features of this tumor.


Subject(s)
Cecal Neoplasms/pathology , Colonic Neoplasms/pathology , Neurilemmoma/pathology , Occult Blood , Aged , Cecal Neoplasms/diagnosis , Cecal Neoplasms/surgery , Colectomy , Colonic Neoplasms/diagnosis , Colonic Neoplasms/surgery , Colonoscopy , Female , Follow-Up Studies , Humans , Japan , Male , Neurilemmoma/diagnosis , Neurilemmoma/surgery , Treatment Outcome
17.
Am J Chin Med ; 26(2): 191-8, 1998.
Article in English | MEDLINE | ID: mdl-9799971

ABSTRACT

We performed human leukocyte antigen (HLA) and human platelet antigen (HPA) in patients with Kami-kihi-to-responsive idiopathic thrombocytopenic purpura. The HLA-A2, A61 and Cw1 were significantly increased in responders compared with nonresponders, as were HLA DRB1 *0901, DRB1 *1502, and DPB1 *0501. In contrast, HLA DPB1 *0201 and DPB1 *0901 were significantly decreased in responders. The a/b genotype of HPA-2 and a/a genotype of HPA-3 were markedly increased in nonresponders, and anti-GPIb antibody was also increased. These results suggest that HLA, HPA, and anti-GP antibody studies may predict the response of idiopathic thrombocytopenic purpura to Kami-kihi-to.


Subject(s)
Antigens, Human Platelet/classification , Drugs, Chinese Herbal/therapeutic use , HLA Antigens/classification , Purpura, Thrombocytopenic, Idiopathic/immunology , Antigens, Human Platelet/genetics , Female , HLA Antigens/genetics , HLA-A2 Antigen/classification , HLA-A2 Antigen/genetics , HLA-B Antigens/classification , HLA-B Antigens/genetics , HLA-C Antigens/classification , HLA-C Antigens/genetics , HLA-DR Antigens/classification , HLA-DR Antigens/genetics , HLA-DRB1 Chains , Histocompatibility Testing , Humans , Male , Purpura, Thrombocytopenic, Idiopathic/drug therapy
18.
Gan To Kagaku Ryoho ; 25(12): 1857-64, 1998 Oct.
Article in Japanese | MEDLINE | ID: mdl-9797808

ABSTRACT

The prognoses of 110 patients with advanced hepatocellular carcinoma (HCC) in stages III and IV were studied retrospectively. These patients were treated mainly by transarterial chemoembolization (TAE) or chemoinfusion using Lipiodol. Some of the patients underwent percutaneous ethanol injection therapy (PEIT) or tumor resection following TAE. Hepatic function, tumor stage, vascular involvement, type of tumor invasion, number of tumors and number of treatments affected the prognosis of the patients. The prognosis was better in the Child A group than in Child B and C. In the Child C group, the prognosis was markedly poor, and was least affected by any treatment. The prognoses in the patients with multiple nodular lesions, massive or diffuse lesions, were much poorer than those with a few nodular lesions. Tumor thrombosis in the central portal vein and distant metastasis greatly exacerbated the therapeutic results. Repeat therapy yielded a favorable therapeutic result when hepatic function was tolerable. Surgical intervention and PEIT were an effective therapy in a few patients. In advanced HCC, liver function and tumor extension should be fully evaluated, and it is important to determine the most effective therapeutic modalities to improve the survival of patients.


Subject(s)
Carcinoma, Hepatocellular/therapy , Liver Neoplasms/therapy , Adult , Aged , Carcinoma, Hepatocellular/mortality , Chemoembolization, Therapeutic , Combined Modality Therapy , Ethanol/administration & dosage , Humans , Injections, Intralesional , Iodized Oil/administration & dosage , Liver/physiopathology , Liver Neoplasms/mortality , Male , Prognosis , Retrospective Studies , Survival Rate
19.
Jpn J Cancer Res ; 89(11): 1179-86, 1998 Nov.
Article in English | MEDLINE | ID: mdl-9914787

ABSTRACT

DX-8951f, a water-soluble and non-pro-drug analogue of camptothecin, exhibits a strong inhibitory action on DNA topoisomerase I (Topo I) and in vitro cytotoxicity against various human cancer cell lines. In order to elucidate the mechanisms of its cytotoxicity, we established a DX-8951f-resistant cell line, SBC-3/DXCL1, from human small cell lung cancer cells (SBC-3) by stepwise exposure to DX-8951f. SBC-3/DXCL1 cells were approximately 400 times more resistant to DX-8951f than parent cells. The SBC-3/DXCL1 cells showed a high degree of cross-resistance to other Topo I inhibitors such as CPT-11, SN-38 and camptothecin, but not to non-Topo I targeting agents such as cisplatin, adriamycin, etoposide, and vincristine. The mechanisms of resistance of SBC-3/DXCL1 cells to DX-8951f were examined. Intracellular accumulation of DX-8951f by SBC-3 and SBC-3/DXCL1 cells did not differ significantly. Although the Topo I activity of nuclear extracts obtained from SBC-3/DXCL1 cells was the same as that of the parent cells, the Topo I of SBC-3/DXCL1 cells was resistant to the inhibitory effects of DX8951f and SN-38. Immunoblotting using anti-Topo I antibody demonstrated similar protein levels of Topo I in SBC-3 and SBC-3/DXCL1 cells. The active Topo I protein of SBC-3/DXCL1 was eluted by a high concentration of NaCl (0.4 N) compared with that of SBC-3 (0.3 N). DX-8951f stabilized the DNA-Topo I cleavable complex from SBC-3 cells, as measured by Topo I-mediated cleavage assay. In SBC-3/DXCL1 cells, DX-8951f also stabilized the DNA-Topo I complex, but with a 10-fold lower efficiency. These results suggest that a qualitative change in Topo I contributes, at least partially, to the resistance to DX-8951f in SBC-3/DXCL1 cells. Therefore, SBC-3/DXCL1 cells may have a unique mechanism of resistance to Topo I-directed antitumor drugs.


Subject(s)
Antineoplastic Agents, Phytogenic/therapeutic use , Camptothecin/analogs & derivatives , Carcinoma, Small Cell/drug therapy , Enzyme Inhibitors/therapeutic use , Lung Neoplasms/drug therapy , Topoisomerase I Inhibitors , Camptothecin/therapeutic use , Carcinoma, Small Cell/pathology , Drug Resistance, Multiple , Drug Resistance, Neoplasm , Humans , Lung Neoplasms/pathology , Solubility , Tumor Cells, Cultured , Water/chemistry
20.
Gan To Kagaku Ryoho ; 24(12): 1843-7, 1997 Sep.
Article in Japanese | MEDLINE | ID: mdl-9382547

ABSTRACT

In 54 patients who underwent hepatic artery infusion chemotherapy for hepatic tumors at our hospital between January 1990 and December 1996, we investigated the complications of this therapy and the therapeutic techniques following its discontinuation. The arterial infusion was discontinued in 36 of the 54 patients; 13 due to death (mean survival period: 15.7 months), and 23 in whom occlusion of the reservoir, etc. made it impossible to use arterial infusion (mean period of use: 13.8 months), and the minimum duration of use was 41 days and maximum duration of use 992 days. The most common complication of the reservoir hepatic artery infusion was reservoir occlusion (14.8%). Another serious complication was reservoir deviation outside the blood vessel in two patients; deviation in to the gastric lumen in one case and intraperitoneal deviation in the other. Four hepatocellular carcinoma patients, in whom it became impossible to use the reservoir due to its occlusion, underwent re-hepatectomy. Three of them survived for more than two years following supplemental local therapy, including subarterial injection, TAE, PEIT, microwave tumor coagulation (MTC). Of four patients with colon cancer metastasizing to the liver, one could undergo re-hepatectomy, one received subarterial injection, and two have survived without relapse. Two of three patients with breast cancer underwent systemic chemotherapy and endocrine therapy successfully, while the third one underwent subarterial injection and TAE, and is still under observation. Hepatic artery infusion should sometimes be discontinued owing to complications caused by various factors. Even if it becomes impossible to use the reservoir, local therapeutic techniques, including re-hepatectomy, TAE, PEIT, MTC, etc., may be performed in some patients. These findings suggest that it is necessary to review the interdisciplinary treatment so as to be appropriate to the primary disease.


Subject(s)
Extravasation of Diagnostic and Therapeutic Materials/etiology , Infusion Pumps, Implantable/adverse effects , Infusions, Intra-Arterial/adverse effects , Liver Neoplasms/drug therapy , Aged , Antibiotics, Antineoplastic/administration & dosage , Antimetabolites, Antineoplastic/administration & dosage , Embolization, Therapeutic , Epirubicin/administration & dosage , Equipment Contamination , Equipment Failure , Female , Fluorouracil/administration & dosage , Hepatectomy , Hepatic Artery , Humans , Liver Neoplasms/therapy , Male , Middle Aged , Prognosis
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