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Biomedical subjects

S Kariya

Publications and source records attributed to S Kariya.

44 records · Page 3Linked to original sources
PubMed1977

The characteristics of human plasma lipoprotein metabolism: influence of low caloric diet on hyperlipidemia.

We have classified hyperlipidemia into three groups according to different levels of VLDL-TG, and postulated the effect of low calorie-diets on plasma TCh are as follows: 1) Low calorie-diets are effective on VLDL-TG in every type of hyperlipidemia, except hyperlipidemia with VLDL-TG under 180 mg/100ml; 2) There was a reciprocal relation between the decreased amount of plasma TCh and the change VLDL-TG induced by the diet; 3) Catabolism of VLDL was accelerated by an increased esterification of VLDL-FC; 4) In the the group with VLDL-TG less than or equal to 180 mg/100ml, the LDC showed a high level of TCh: protein ration, and in the group with VLDL-TG greater than or equal to 260 mg/100ml, there was to be low level of TG: protein ratio in VLDL: 5) In hyperlipidemia with plasma TCh unchanged by the diet LDL-TCh increased significantly without any increase in LDL protein and LDL-TG.

Apolipoproteins↗
PubMedDate not supplied

The immunopotentiation effects of the bifunctional radiosensitizer KIN-806 in comparison with its analogs KIN-804 and KIN-844.

KIN-806 is one of the 2-nitroimidazole derivative hypoxic cell radiosensitizers. Its radiosensitizing effects and the degree of lung metastasis detected were evaluated and compared with its analogs KIN-804 and KIN-844. The immune reactions induced by these radiosensitizers were also analyzed. Female C3H/He mice and SCCVII tumor cells were used. Seventeen days after inoculation of SCCVII tumor cells into the animals, 0.4 g/kg of KIN-806, KIN-804, and KIN-844 was administered to each radiosensitizer group 30 min before 40 Gy was delivered as local irradiation. In each group, KIN-806, KIN-804, and KIN-844 markedly suppressed tumor regrowth in comparison with animals that received irradiation alone. There was no significant difference in the radiosensitizing effects among these three radiosensitizers. A marked suppression of lung metastasis and macrophage/T-lymphocyte infiltration into the tumor were observed only in the KIN-806-administered groups, regardless of the presence or absence of radiation therapy. It therefore appears likely that the lung metastasis suppression was caused by the immune reaction elicited by KIN-806, which is an excellent immunopotentiator as well as an effective radiosensitizer.

Animals↗
PubMedDate not supplied

Conservation treatment intensified with an anti-estrogen agent and CAF chemotherapy for stage I and II breast cancer.

In order to improve both cosmetic results and survival rates, we performed breast-conservation treatment (BCT) intensified with tamoxifen and CAF chemotherapy to 218 out of 224 patients who visited our department with the desire of breast-conservation between August 1989 to December 1998. Of these patients, 68 presented with tumors of stage I, and another 122 stage II. All patients were administered tamoxifen (for pre-menopausal women) or tremifene (for post-menopausal women) orally: tamoxifen and tremifene administration was started just after confirmation of the breast cancer based on the findings of fine-needle aspiration cytology. All patients underwent lumpectomy with or without axillary dissection (level I and II). For patients with T2 tumors, the lumpectomy was performed following two to four times of CAF chemotherapy. Following conservative surgery, patients were treated with radiation therapy to the intact breast and ipsilateral axilla to a total dose of 4400 cGy with a conedown to a total median dose of 5300 cGy. At the end of March 1999, the mean follow-up time was 49.0 months. In spite of high-positivity (approximately 30%) of microscopically surgical margin, local recurrence rate is considerably low, and only 2 patients experienced local recurrence. Cause-specific survival rate for patients of stage I is 100%, and that of stage II is 91.7% at 5 years. The cosmetic results of therapy were also considered good.

Adult↗
PubMedDate not supplied

Breast-conservation treatment for patients with ductal carcinoma in situ.

Fourteen cases with symptomatic ductal carcinoma in situ (DCIS) were treated with breast-conservation treatment intensified with endocrine therapy. Nine of 14 patients with palpable mass had tumor detected on mammography. CT, ultrasonography, and MRI were able to detect linear and/or spotty lesion or enhancement suggesting DCIS. Whereas these findings were not particular to DCIS, the combination of these modalities would be useful in deciding the extent of resection for DCIS. There was no patient selection for breast-conservation treatment in our department. All patients received tangential and boost radiation, and were treated with endocrine therapy using anti-estrogen drugs. The reason that nine cases had close margins (<5 mm) might be on account of the treatment including lumpectomy with 1 cm of surgical margin. In spite of their margin status, no local or systemic failure was experienced, and the cosmetic results of most patients were rated as excellent or good. Therefore, our breast-conservation treatment intensified with systemic therapy is thought to be adequate for patients with symptomatic DCIS. Six of eight cases who received preoperative treatment containing endocrine therapy with or without CAF chemotherapy showed a decrease in tumor size. Preoperative treatment may effect the microinvasion and/or breast tissue surrounding a DCIS tumor.

Adult↗
PubMedDate not supplied

Sudden termination of G-CSF injection leads to apoptosis of a large proportion of increased granulocytes.

The effectiveness of granulocyte colony-stimulating factor (G-CSF) for granulocytopenia has been widely recognized. However, although granulocyte counts rapidly increase after a few injection of G-CSF, a large proportion of the increased granulocytes disappear from peripheral blood within a few days following G-CSF withdrawal. Where do they go? In this report, the answer can be seen at a glance. Using MitoCapture and a CCD camera-equipped fluorescence microscope, we succeeded in demonstrating that G-CSF withdrawal induced loss of mitochondrial membrane potential, i.e., an early stage of apoptosis, in human peripheral granulocytes increased by G-CSF.

Agranulocytosis↗