検索

Using a direct immunofluorescent method, histological locations of immunoglobulins (IgG, IgM, IgA and IgD of heavy chain, and kappa and lambda of light chain) and complement components (C3 and C4) were studied in 78 brain tumors, which included 24 astrocytomas, 6 metastatic tumors, 5 medulloblastomas, 4 malignant lymphomas, 15 meningiomas, 8 schwannomas, 8 pituitary adenomas, and 8 other miscellaneous brain tumors. IgG-positive cells were observed in the perivascular regions of astrocytomas, but were more marked in those of high grade, metastatic tumors and meningiomas. Malignant lymphomas demonstrated IgG and IgM-positive cells accompanied by either kappa of lambda light chains. C3 and C4 were much less evident in these tumors. Pituitary adenomas showed slight positive stains for both immunoglobulins and complement components on the blood vessel walls, Immune reactions against brain tumors were discussed including the clinical application of autologous lymphocyte infusion in malignant gliomas and combination chemotherapy in intracranial malignant lymphomas.

<p>The kinetics in tumor cells and various factors affecting the tumor accumulation of 67Ga-citrate and 201Tl-chloride were studied in vitro. 67Ga was taken up gradually by tumor cells and its excretion from the cells decreased with time. 201Tl was taken up rapidly by tumor cells. Its excretion was very rapid, indicating that the two nuclides had entirely different kinetics in tumor cells. The uptake of 201Tl by culture cells correlated with that of 42KCl and was inhibited by Ouabain. 201Tl was hardly taken up by nonviable tumor cells. These facts indicate that active transport involving Na-K ATPase is involved in the tumor accumulation of 201Tl. The uptake of 67Ga and 201Tl by tumor cells was not affected by the administration of anticancer agents. The uptake of 67Ga by tumor cells was dependent upon the concentration of transferrin in the medium, which apparently plays a role as one of the pathways of tumor accumulation of 67Ga.</p>

Effect of nicomol on high density lipoprotein (HDL) subfractions, HDL2e and HDL3e, separated by electrophoresis.

Partial excess of chromosome 1 (q25-q32) was noted in malignant cells from all of 10 patients who had disorders such as non-African Burkitt's lymphoma, adult T-cell leukemia, myelofibrosis, malignant lymphoma, chronic lymphocytic leukemia or chronic myelocytic leukemia in blast crisis. The break points on chromosome 1 were at centromere, q12, q21, q23, q25 and q32. Variations in the specific region of the long arm of chromosome 1, q25-q32, were thought to be important in the evolution of malignant cell proliferation.

In order to get precise information about the movement of plasma membrane proteins in cap formation, cyto- and bio-chemical analyses were made of the plasma membranes from non-capped areas of Ehrlich ascites tumor cells (EATCs) exposed to concanavalin A (Con A). Blebs formed by treatment with cytochalasin B (CB) of the non-capped areas of cells having a cap were isolated and used as the plasma membranes from non-capped areas (ConA-CB-bleb fraction). This bleb fraction was compared with a bleb fraction prepared from cells without ConA-treatment (CB-bleb fraction). Cytochemical analysis of ConA-CB-bleb fraction revealed a decreased in conA binding sites (ConA-BS) compared to the CB-bleb fraction. SDS polyacrylamide slab gel electrophoresis also revealed a decrease in the major components of ConA-BS of the ConA-CB-bleb fraction. The minor components of ConA-BS showed no distinct quantitative difference between the ConA-CB-bleb and CB-bleb fractions. NA+ K+-adenosine triphosphatase (ATPase), 5' nucleotidase (5'ND) and gamma-glutamyl transpeptidase (gamma-GTP) did not show any decrease in activity in the ConA-CB-bleb fraction, but the activity of D+-stimulated phosphatase (K-Pase) was decreased. The findings indicate that there are two types of plasma membrane glycoproteins in EATCs; one includes those participating in cap formation due to ConA, e.g. the major components of ConA-BS and K-Pase, and the other, those not participating in such cap formation, e.g. some minor components of ConA-BS, ATPase, 5'ND and gamma-GTP, which keep their places without moving.

A 63-year-old man developed generalized lymphadenopathy with skin rashes, fever, hepatomegaly and polyclonal hypergammaglobulinemia, twice, in February 1972 and in June 1979, after taking allopurinol for gout. Cervical lymph node biopsy, performed each time, showed the presence of immunoblasts and plasma cells, effaced nodal structure with involvement of the pericapsular tissue, rich vascularity and numerous mitoses, indicative of angio-immunoblastic lymphadenopathy with dysproteinemia (Frizzera, Moran and Rappaport). The existence of hypersensitivity to drugs, in particular, allopurinol in certain patients was emphasized, and induction of immunoblastic lymphadenopathy with various other therapeutic agents was briefly discussed.

In order to investigate the immunological responsiveness of tumor-bearing hosts to tumor cells, splenic suppressor cells from Ehrlich tumor-bearing mice that inhibited anti-tumor effector cell activity were characterized. In vitro cell-mediated cytoxicity and cytostasis assays were performed to test for the existence of anti-tumor immunity. suppressive activity assayed by cell mixture experiments became apparent with decline of anti-tumor immunity and progressive tumor growth. The cells mediating the suppression were found to be nylon wool column adherent T cells and inhibited T cell dependent cytotoxicity rather than non-T cell dependent cytostasis. In vivo cell transfer experiments demonstrated that intravenous injection of suppressor cells to a host already inoculated with tumor cells mixed with antitumor effector cells resulted in significant enhancement of tumor growth. This inhibition of in vivo neutralization assay be suppressor cells was found in not only allogeneic but also syngeneic tumor system. Splenectomy at the time of tumor resection endowed the host with stronger resistance against subsequent reinoculated tumor than sham-splenectomy did, reflected by prolonged survival times. These results suggest that splenectomy combined with surgical removal of the tumor is a useful treatment of clinical malignancies.

Marked IgE-mediated histamine release from rat mast cells sensitized in vitro with mouse antiserum occurs in the presence of added Ca++ and phosphatidylserine (PS), although a considerable degree of antigen-induced histamine release which may utilize intracellular or cell-bound calcium is also observed. The decay in the responsiveness to Ca++ of the sensitized cells stimulated by antigen in Ca++-free medium in the presence of PS is relatively slow, and maximum release is produced by Ca++ added 1 min after antigen. Histamine release also occurs when Ca++ is added after PS in the absence of antigen to the sensitized cells suspended in Ca++-free medium. Unlike the antigen-induced release, the intensity of this non-antigen-induced release varies depending on both mast-cell and antiserum pools. A heat-labile factor(s), which is different from antigen-specific IgE antibody and is also contained in normal mouse serum, is involved in this reaction. In the antigen-nondependent (PS + Ca++)-induced release, no decay in the responsiveness to Ca++ is observed after PS addition. Both the antigen-induced and non-antigen-induced release are completed fairly rapidly and are dependent of temperature, pH and energy.

Chromosome analysis was performed on cells from a patient of null cell lymphoma, well-differentiated type. A 14q12 translocation was observed in all the banded cells. In addition, there were multiple chromosome abnormalities. This case will be useful in considering the significance of the 14q1(1-3) translocation in malignant lymphoma disease.

Some critical experiments have been carried out on the microspectrophotometry using the lymphocytes of a mouse, stained with Feulgen reaction, revealing that most reliable value can be attained by illuminating the material with a small spot-light and integrating the area surrounded by the extinction curve drawn by tracing along the diameter of the smeared and fixed cell.

After grinding the tubercle bacilli cells, both human virulent strain, H37Rv, and avirulent strain, H37Ra, cultured in 5auton's medium, and obtaining three fractions of R1, S1 and R2 (R1, the first sediment; S1, the second supernatant; and R2, the second sediment) by the ultracentrifugation, the authors studied the enzymatic activities and the antigenic capacity against infection of these fractions; and obtained the following results: 1) Although the R1-fraction confers the defensive forte to mice in some degree, because of the presence of living bacilli in the fraction, it is difficult to decide definitely whether the defensive force owes its capability to this fraction or to living bacilli at the present stage of our experiment. 2) The S1-fraction possesses enzymatic activity on various substrates, but it does not confer animal any defensive force against infection. 3) The R2-fraction specifically oxidizes lactate and succinate" and it can markedly impart animal the defensive ability against infection.

1. Histochemical and cytochemical studies with respect to the sites of reaction were made on the succinic dehydrogenase system activity of human and animal tissues using ditetrazolium salts, namely, neotetrazolium chloride, nitro-neotetrazolium chloride, and nitra-blue tetrazolium chloride. 2. The advantages and disadvantages of each ditetrazolium salt for histochemical and cytochemical purposes and the reaction taking place in frozen tissue sections and that in fresh tissue blocks were compared, and the method of procedure suitable for each condition was established with some modification. 3. Selecting conditions suitable for cytochemical purpose, it was shown that the reaction took place at the sites coinciding with mitochondria, and the distribution of the enzyme reaction was also examined. In addition, several new findings in the brains and other tissues cytochemically made clear were pointed out.

By physically destroying typhoid bacilli and centrifuging at a high speed, an insoluble granular fraction (P1) and soluble fraction (S1) were obtained. Chemical and enzymologic properties of these substances as well as their influences on the protective ability against infection were studied; and the following results were attained: 1. P1 contains an extremely small amount of proteins when compared with S1. 2. The enzymologic activity of P1 is entirely different from that of S1. In P1 the respiratory enzyme system of only lactate and succinate is localized. 3. Although both P1 and S1 possess the antibody-producing ability in serum of rabbit to the same high degree, P1 imparts to mice a markedly high protective ability against infection. 4. By the heat-treatment of P1 its antigenicity is lost at the same time.

From these results it is but natural to assume that the antigen-antibody reaction is involved in the phenomenon, eosinophilia. The antigen in this instance is the filtrate of hookworm emulsion, and the serum of hookworm disease as well as the bone marrow can be thought to contain the antibody. In any case, so long as the medium contains the serum or bone marrow or both of them obtained from the patient of hookworm disease, eosinophilia and the acceleration in the motility of eosinophils are brought about in the growth zone by addition of the filtrate of hookworm emulsion. Therfore, as for the mechanism inducing hookworm eosinophilia, it may by interpreted that the patient of hookworm disese is repeatedly sensitized by the antigen arising all probability from the metabolic products of hookworms or from the dead bodies of the worms; and producing the antibody in tissues and blood, thus the antigen-antibody reaction is elicited in vivo as long as hookworms live in the human body so that the increase in the mitosis and the acceration in the motility of eosinophils in the bone marrow are brought about with the resultant continuous discharge of a large quantity of eosinophils from the bone marrow parenchma into the sinusoids, there by inducing eosinophilia in the peripheral blood.

Of eosinophilias that we often encounter clinically, we selected two of the most representative ones, namely, hookworm diseae and bronchial astma, for our present sternal bone-marrow tissue culture, and studied the movement patterns and wandering capacity of eosinophils. As the results, even in those eosinophils that show no significant change other than the increase in number in ordinary stained-smear specimens of peripheral blood or bone marrow, it has been clarified that, when observed under living condition, they reveal a picture specific to individualistic behaviors according to diseases. Therefore, it can be assumed that in the pathologic condition what is known as eosinopilia not only eosinophils increase in number but also qualitative changes of eosinophlils specific to each disease are brought about, and consequently these specific changes are reflected on the movement patterns of the eosinophil.

1. Methods of retrograde coronary perfusion and direct coronary artery perfusion in combination with a bubble oxygenator were investigated in dogs. 2. Ventricular fibrillation occurred more frequently during the operation in hypothermia than in the operation performed in combination with the extracorporeal circulation. 3. The optimal pressure of perfusion is considered to be 30 to 35 mm Hg in retroperfusion, whereas, 100 mm Hg in direct coronary artery perfusion. 4. Perfusion by the pressure bottle method is preferable to the gravity method because the fall of blood temperature in the irrigation tubing might cause ventricular fibrillation. 5. From the metabolic study of the methods is clear that there is a tendency to myocardial anoxia after 15 to 20 minutes of perfusion in both methods.

In our study on the influences of various hormones and various endocrines on the megakaryocyte function by means of bone-marrow tissue culture, we obtained the following. 1. In the repeated administration of ACTH, cortisone, testosterone, progesterone, or thyroxin to guinea pigs, these hormones accelerated the megakaryocyte function, whereas estradiol on the contrary diminished the function. 2. The removal of such endocrines as the pituitary, adrenal, thyroid or testicles will diminish the megakaryocyte function, while removal of the ovaries accelerates it. 3. For the megakaryocytes in the hypophysectomized rats, ACTH acts most effectively to restore their function, followed by cortisone and pulverized thyroid, while testosterone has hardly any effect on the function. 4. ACTH, cortisone, prednisolone, testosterone, progesterone, and pulverized thyroid act directly on megakaryocytes so as to accelerate their function, while estradiol diminishes the megakaryocyte function. 5. For the megakaryocytes in idiopathic thrombocytopenic purpura ACTH is most effective in restoring the function; for the megakaryocytes in hypoplastic anemia cortisone is most effective; and for the megakaryocytes in Banti's disease prednisolone is most effective in restoring the megakaryocyte function.

Using the erythroid cells of Rana nigromaculata the hemoglobin synthesis has been studied in the relation of DNA and RNA contents. Results showed that the hemoglobin synthesis starts in the early stage of erythroblast but becomes marked just before the complete maturation. RNA contents drops markedly in the later stage of maturation. Measurement of DNA contents by Feulgen reaction suggested the termination of the mitosis just before the prematuration. From these results the author concludes that the RNA which will act as the template for the globin synthesis, develops from the early stage of erythroblast but the templation is accelerated in the terminal stage of maturation and the marked acceleration in hemoglobin synthesis in this stage.

Judging from our vital observation conducted mainly by tissue culture, it was firmly demonstrated that ascitic phagocytes are not histiocytes but they are the cells closely related to monocytes and that the sites of the genesis are the milky spots of the greater omentum. The milky spots are most possibly the remnants of the mesenchymal hematopoiesis of the embryonic stage.

Papanicolaou's smear test is a method based upon the morphological study of the cancer cells exfoliated from the epithelium, whereas T.P.T. is a method for examining the intracellular metabolism, the glycolysis, by a supravital staining of the cancer cells. The latter, therefore, can be called as a cytochemical diagnosis. Since, by the T.P.T. method, even a beginner can obtain the result of approximately 80% in correct and the skilled ones as high as 95%, the clinical diagnosis can be made all the more accurate by using Papanicolaou's test in combination with T.P.T. method. As for the entity of these granular cells, there remains a room for discussion, but Misonou feels that Cell Type A arises from necrobiosis of the carcinomatous tissues while Type B would be a certain wandering cell. This reaction, however, should not be employed to the cases in the puerperium, because the similar cells are exfoliated from the puerperal uterus. Thus, I can say that the T.P.T. is not a specific reaction to cancer. From this study, I wuld recommend T.P.T. as a method that is quite simple and is servicable for saving a great deal of effort and time on the part of clinicians, and I would like to encourage you to use it as one of tools for the diagnosis of carcinoma of the uterus, especially for an early diagnosis.