PubMed Health⌕ Search

Biomedical subjects

F Shionozaki

Publications and source records attributed to F Shionozaki.

At least 19 recordsLinked to original sources
PubMed1986

A rat model for monitoring homograft rejection of the lung.

A new surgical procedure was devised for the experimental homograft of the lung. The pulmonary artery and vein and bronchus were anastomosed under the operation microscope using interrupted sutures in group W (30 outbred Wistar rats) and continuous sutures in group F (7 inbred F344/Ducrj Rats). Mean ischemia time during the operation was 95.3 +/- 10.3 min in the group W and 55.6 +/- 5.8 in group F. Eight out of 30 rats (27%) of group W and all rats of group F survived more than 24 hr after the surgery. Pulmonary functions of grafted lungs were evaluated by serial x-rays and the perfusion ratio was 27.4 +/- 11.6% (mean +/- S.D.) in group W and 25.4 +/- 7.7% in group F. A patent opening of the hilar anastomosis in these rats was confirmed at autopsy. This model with continuous suture would be useful for the rat lung transplantation.

Animals↗
PubMed1984

A ten-year experience with surgical resection for patients with metastatic lung tumors.

Removal of metastatic lung tumor was performed for 27 patients in a period from January, 1972 to December, 1981. They included 22 carcinomas and 5 sarcomas. Diagnosis as having lung metastasis was made after removal of the primary tumor in 18 patients and at the time of the first detection of the primary tumor in 4 patients. In 5 patients the operation for the metastatic tumor preceded that for the primary malignancy. Metastatic tumors were localized in one lobe in 13 patients. Thirteen of the 27 patients underwent lobectomy and 14 received other types of operation, with or without hilar and/or mediastinal lymphnode dissection. Four patients underwent bilateral thoracotomy. Survival rates at 3 and 5 postoperative years of the group of patients who underwent the operation for primary malignancy first were both 49 percent. The number of lesions removed or the type of operation did not seem to have correlations with the survival rate. Patients whose tumor-free interval was more than 40 months tended to survive longer than those who had an interval less than 40 months. The group with a tumor doubling time of more than 50 days showed a higher survival rate than the group with a doubling time of less than 50 days. Of the 4 patients thoracotomized bilaterally 2 are alive for 20 and 34 months postoperatively, while the other 2 died at 20 and 65 months after the operation. In the selected patients with metastatic lung tumors, surgical treatment can be conducted with a reasonably good result, even though the metastatic malignancy is multiple or bilateral.

Carcinoma↗
PubMed1984

Rejection monitoring by lymphocyte blastogenesis assay in canine lung allotransplantation.

Seventy-seven adult mongrel dogs underwent left lung transplantation to study the immunological detection of posttransplant rejection response using the lymphocyte blastogenesis assay. Experimental animals were divied into 3 groups; control autotransplantation (4 dogs), control allotransplantation (32 dogs) and immunosuppressed allotransplantation (41 dogs). The lymphocyte blastogenesis assay included mixed lymphocyte reaction (MLR), lymphocyte reactivity to lectins (PHA, ConA and PWM) and spontaneous blastogenesis in peripheral lymphocyte culture methods. The latter two tests were performed in serial blood samples up to the 38th posttransplant day. In the control autotransplant group there were no particular changes in posttransplant PHA reactivities. In the animals with lung allograft, results of preoperative MLR between donor and recipient showed no particular relationships to posttransplant rejection response. The recipient, however, showed a decreased response to PHA and an increased spontaneous blastogenesis at the period undergoing rejection which were confirmed by blood samples taken within 2 days before sacrifice of animals whose transplant specimens showed apparent histologic findings of rejection. In the immunosuppressed allotransplantation group, those findings of PHA response and spontaneous blastogenesis had often preceded the rejection episode detected on chest x-ray films, whereas there were no particular changes in both parameters of dogs bearing enhanced allografts. The serial detection of spontaneous blastogenesis and PHA reactivity in peripheral lymphocyte may be one of the useful methods for early prediction of rejection episode in lung transplantation.

Animals↗