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Biomedical subjects

F Inoue

Publications and source records attributed to F Inoue.

At least 127 records · Page 7Linked to original sources
PubMed1984

Quantification of myonecrosis and comparison of necrotic activity of snake venoms by determination of creatine phosphokinase activity in mice sera.

Serum creatine phosphokinase (CK) values were measured in venom-injected mice. The increase of CK levels was proportional to both the amount of venom injected and the myonecrotic actions determined microscopically. The CK isoenzymes were regarded as due to the predominant increase of CK-MM, which was considered to be of skeletal muscle origin in the venom-injected area. No CK isozyme variants were found by electrophoretic examination. For a comparative study on necrotic intensity, nine snake venoms were examined. The elapid venoms induced higher values of serum CK with a stronger necrotic effect than the crotalid venoms, and the data agreed with the histological findings. On application of the antivenom, an initially elevated CK value was significantly decreased and no severe damage was observed under light microscopy. Since the changes of serum CK activities paralleled necrotic intensity, the CK value is useful as an indicator of myonecrosis due to snake venom.

Animals↗
PubMed1984

Intracellular potential changes following coronary occlusion in isolated perfused rat hearts.

A method of perfusing rat ventricles has been developed which permits the recording of intracellular potentials from up to 10 cell layers below the endocardial surface. Intracellular potentials from all layers remained the same for up to 1.5 h before occlusion. Regional occlusion of flow was produced by occluding the left anterior descending coronary artery and then intracellular potentials were recorded from normal and occluded cells for up to 2 h after occlusion. Immediately after occlusion, marked changes in potentials were recorded from occluded tissue. The greatest change was in the duration of the action potential which showed a marked shortening. There was also a reduction in the maximum rise rate and action potential height with smaller falls in resting membrane potential. Changes were greatest in the deeper cells (layers 6-10) and least in superficial subendocardial cells which were always superfused with perfusion fluid. Occlusion increased the number of quiescent cells (no action potential) as well as the number of cells showing aberrant action potential configurations (e.g., double peaks). Similar changes in intracellular potentials following occlusion were also recorded from the subepicardial surface of anaesthetized rats in situ. Arrhythmias induced by occlusion were similar to those seen in conscious rats following occlusion of a coronary artery.

Action Potentials↗
PubMed1984

Enzyme defect in a case of tyrosinemia type I, acute form.

We determined the activities of tyrosine aminotransferase (TAT, EC 2.6.1.5), p-hydroxyphenylpyruvate oxidase (p- HPPA oxidase, EC 1.14.2.2) and fumarylacetoacetate fumarylhydrolase ( FAH , EC 3.7.12) in cytosol of the liver and kidney tissues obtained at autopsy from a case of hereditary tyrosinemia type I. Values were compared with those from a control group of autopsied tissues from three adults and six children, who had died of other causes. In tyrosinemia, these three hepatic enzyme activities were all decreased: TAT showed approximately 35%, p- HPPA oxidase 11%, and FAH 60% of the corresponding control values. On the other hand, kidney enzymes in tyrosinemia revealed that FAH was most significantly decreased to approximately 14% of the control activity. Km values for substrate--determined for p- HPPA oxidase and FAH --were not different between the patient and controls, suggesting no altered properties of these enzymes. We conclude that in the present case of hereditary tyrosinemia type I, the activities of p- HPPA oxidase in liver and FAH in kidney were most strikingly affected. This fact may in part explain the deteriorated metabolism of tyrosine observed in this patient.

4-Hydroxyphenylpyruvate Dioxygenase↗
PubMed1983

Folate supplements and phenytoin-salicylate interaction.

We found biphasic fluctuations of serum phenytoin level when aspirin was added to chronic phenytoin therapy for an epileptic patient. The total serum phenytoin level was lowered initially by addition of aspirin. However, after 4 months on phenytoin-aspirin combination therapy, he showed elevated serum phenytoin levels, mild nystagmus, and serum folate deficiency.

Adult↗
PubMed1983

Motion analysis in the movements of standing up from and sitting down on a chair. A comparison of normal and hemiparetic subjects and the differences of sex and age among the normals.

With regard to the motions of standing up from and sitting down on a chair, and standing quietly for thirty seconds, forty normal adults (ten young males, ten young females, ten elderly males and ten elderly females) and ten hemiparetics were compared by use of a force plate and an electrogoniometer. The hemiparetics had the following characteristics: (1) A long time was required for stabilization of sway at the center of force (C.O.F.) when standing up. (2) The C. O. F. was located to the back and deviated primarily to the sound leg, and the grade of sway was greatest during quiet standing. (3) Vertical 8 Hz fluctuation in quiet standing was seen in all cases, while in sitting down 3-4 Hz were recorded. (4) The motion time in standing up and sitting down was prolonged. (5) Long periods of initial knee flexion existed just before the knee extension in standing. (6) A broad lateral sway of C. O. F. was recorded in the standing movement. Among the normal groups, the following characteristics were noted: (1) The young stand up more rapidly. (2) The elderly needed more time to stabilize the antero-posterior sway in the standing up motion. (3) The C. O. F. of males was located more anteriorly than that of females. (4) The grade of sway in quiet standing was greater in females than in males. (5) In young males, the standing up time was shorter than the sitting down time, while in young females the situation was reversed.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1982

Analysis of transepidermal leukocyte chemotaxis in experimental dermatophytosis in guinea pigs.

In dermatophytosis, there is exocytosis of polymorphonuclear leukocytes (PMNs) toward the fungus-laden horny layer. To analyze this mechanism, we studied in vitro leukotactic properties of epidermal extracts prepared from lesions of experimental Trichophyton mentagrophytes infection in guinea pigs as well as fungus-derived chemotactic factors. Trichophyton mentagrophytes was found to release low-molecular-weight PMN chemotactic factors with its growth, like other microorganisms. Furthermore, it activated complement via the alternative pathway to produce complement-derived chemotactic factors in vitro. The epidermal extracts prepared from weakly inflammatory lesions of an early stage of T. mentagrophytes infection showed mild PMN chemotactic activity, which, as in those from irritated skin, was mostly due to the presence of low-molecular-weight chemotactic factors. After 8 days of infection, when prominent PMN migration took place together with the development of immune reactivity to fungus antigens, the epidermal extracts revealed strong leukotactic activity that showed a triphasic pattern by Sephadex G-75 chromatography similar to that observed in complement-activated serum. Since we could not demonstrate any deposition of immunoglobulins and complement on the fungal elements present in the horny layer, actual complement activation in vivo seems to occur after interaction of serum with soluble fungal components in the epidermis through both classic and alternative pathways. We think that the transepidermal migration of PMNs in dermatophytosis, together with contact sensitivity to fungal antigens, is responsible for induction of increased epidermopoiesis with resultant desquamation to eliminate the fungus-laden horny layer.

Animals↗
PubMed1982

Postoperative long-term cancer chemotherapy (PLCC) extends life-span of non-curatively resected patients with stage IV gastric cancer.

Postoperative long-term cancer chemotherapy (PLCC) with a combination of Mitomycin-C, Tegafur and PSK (an immunostimulant) was applied to non-curatively resected cases with stage IV gastric cancer (invading the adjacent organs and/or with metastasis to the liver, peritoneum, and/or distant lymph nodes). This approach has a significant life-prolongation effect. The two-year survival rate was 16.8 per cent in the PLCC group, such being higher than 6.7 per cent and 1.7 per cent in MMC and no chemotherapy groups (p less than 0.05). 50 per cent survival periods in those with liver metastasis were 8.3 months in the PLCC group, such being longer than 5.2 and 2.8 months in MMC and no chemotherapy groups (p less than 0.002) respectively. Combination therapy of PLCC and intra-arterial infusion of 5-FU through the proper hepatic artery prescribed for 8 patients with liver metastasis resulted in a 3-month prolongation of 50 per cent survival periods, compared with PLCC alone (p less than 0.05). In those with peritoneal dissemination the rate was 10.5 months in the PLCC group, that is longer than 6.5 months in the MMC group (p less than 0.02). In cases of invasion to other organs plus distant lymph node metastasis, the time was 11.0 in PLCC and 7.0 months in MMC groups (p less than 0.05). Thus, PLCC is a palliative approach for non-curatively resected carcinoma of the stomach.

Antineoplastic Agents↗
PubMed1982

Water sorption-desorption test of the skin in vivo for functional assessment of the stratum corneum.

Based on the evidence from our previous studies that we can evaluate the hydration state of the skin surface quickly and quantitatively in terms of conductance to the high frequency electric current of 3.5 MHz, we have established a simple in vivo function test that furnishes information on the hygroscopic property and water-holding capacity of the stratum corneum in a few minutes. The test procedure consists of electromeasurements before and after application of a droplet of water on the skin for 10 seconds to obtain data on the hygroscopic property of the skin surface and later serial measurements at an interval of 30 seconds for 2 min to evaluate the water-holding capacity. Under usual ambient conditions normal skin surface showed a high rise in conductance just after application of water, which was followed by a rapid fall-off within 30 seconds, thereafter by gradual return to the prehydration levels by 2 min. By this method we have demonstrated that (i) the superficial horny layer of normal skin is much less hygroscopic and less capable of holding water than the corresponding deeper portions and that (ii) scaly skin shows functional defects in both hygroscopicity and water-holding capacity, between which the former normalizes much faster than the latter.

Absorption↗
PubMed1982

[Effect of postoperative long-term cancer chemotherapy (PLCC) on non-curative gastric cancer of stage IV].

We studied the effect of postoperative long-term cancer chemotherapy (PLCC) on the survival of the patients with stage IV gastric cancer, subjected to non-curative resection. The study was carried out with 90 patients receiving the PLCC from 1970 to 1978, and 95 patients received intraoperative one shot I.V. injection of Mitomycin-C from 1964 to 1978, and 106 patients without chemotherapy from 1964 to 1970. The PLCC consisted of the following combination: MMC intermittent intravenous injection (20 mg of MMC during operation followed by 10 mg on the next day, 4th week and every 3 months respectively): postoperative oral administration of FT-207 (600 mg/day) and; PSK (3 g/day) for more than 4 months after operation. The background factors were not significantly different among 3 groups. Two year survival rate was 18.9% in PLCC group, significantly higher than that of 7.4% in MMC group and 2.0% in no chemotherapy group which was respectively (P less than 0.05). The PLCC also demonstrated its be effective mess in prolonging the survival of the patients with hepatic metastasis or peritoneal dissemination.

Antineoplastic Agents↗