This study was designed to investigate the effect of substitution of strontium for calcium on mechanical activity in isolated perfused spontaneously beating rat hearts. The mechanical activity of the hearts of Langendorff's preparation in conditions of low calcium and strontium-substitution for calcium was compared. The effect of norepinephrine and verapamil were also observed in those conditions. The results were as follows: 1. In low calcium, the mechanical activity of the heart preparation was significantly reduced, but when the equimolar strontium was substituted for the reduced calcium, the activity was kept at similar level to the normal condition. 2. When equimolar strontium was substituted for the total calcium in perfusate, the heart preparation stopped its beating, and it was not restored in spite of reperfusion with normal calcium perfusate. 3. Norepinephrine-induced positive inotropic effect was inhibited in low-calcium condition especially with low concentration of norepinephrine, but not in strontium-substitution for calcium. 4. Verapamil reduced the activity of the heart both in low-calcium and strontium-substitution as well as in normal calcium conditions. From above results, it was concluded that strontium served as a substitute of calcium in maintaining mechanical activity and in responsiveness to norepinephrine, and the influx of strontium through cell membrane is inhibited by verapamil as the influx of calcium.
Animals ; Calcium ; Cell Membrane ; Heart* ; Norepinephrine* ; Rats* ; Reperfusion ; Strontium* ; Verapamil

No abstract available.
Child* ; Humans

No abstract available.
Gastrectomy*

No abstract available.
Drainage* ; Humans ; Jaundice, Obstructive*

Cutis marmorata telangiectatica congenita, which was first described by Van Lehuizen in 1922, is characterized by the presence at birth of a persistent cut;is marmorata pattern, phlebectasia, spider nevus-like telangiectasia, and areas of ulceration and steady improvernent with time. We reported a case of cutis mar.morata telangiectatica. congenita occuring in a 70 days old female infant showing the reticulated mottling and atrophy of the skin on the both lower extremites, right upper extremity, abdomen and buttock muscle weakening of right upper extremity and left lower extremity compare with the opposite side. Skin lesions were much improved during the observation period of 10 months without any other specific treatment except hermiatrophy of right upper extremity.
Abdomen ; Atrophy ; Buttocks ; Female ; Humans ; Infant ; Lower Extremity ; Parturition ; Skin ; Spiders ; Telangiectasis ; Ulcer ; Upper Extremity

A 56-year- old man showed millet seed to egg sized, yellowish tender papules, subcutaneous mass on the both elbows, dorsa of both hands & feet, and lateral malleoli and helix of right ear for 6 years. the significant laboratory findings were leukocytosis, increased erythrocyte sedimentation rate, glycosuria, hyperuricemia and increased blood glucose level. X-ray findings of both hands & feet demonstrated gouty arthritic patterns. Histopathologic findings of the left lateral malleolar lesion revealed the typical patterns. Histopathologic findings of the left lateral malleolar lesion revealed the typical pattern of gout with needle-shaped urate crystal. Therapy was begun with colchicine & allopurinol but the patient died of renal failure three weeks after the start of therapy.
Allopurinol ; Blood Glucose ; Blood Sedimentation ; Colchicine ; Ear ; Elbow ; Foot ; Glycosuria ; Gout* ; Hand ; Humans ; Hyperuricemia ; Leukocytosis ; Ovum ; Panicum ; Renal Insufficiency ; Uric Acid

Cutaneous metastases from internal carcinornas are relatively rare. The frequency of metastases to the skin varies from 0.5-4.4%. We report a case of cutaneous metastasis suspected to originat from stomach cancer. A 44-year-old female, who had an episode of total gastrectony under diagnosis of stornach cancer three years ago, had multipe painless erythernatous nodules on the case and neck for one year. Histologic findings shows atypical anaplastic cell infiltration at the derr is and subcutaneous tissues. Cells with hyperchrornatic and erally displaced nuclei were recogniz d PAS staining shows positive reactions within the cells of glarid like structure. She died twelve month after the appearance of the cutaneous lesions.
Adult ; Diagnosis ; Female ; Humans ; Neck ; Neoplasm Metastasis* ; Skin ; Stomach Neoplasms ; Stomach* ; Subcutaneous Tissue

No abstract available.
Reticulocyte Count* ; Reticulocytes*

No abstract available.
Reticulocyte Count* ; Reticulocytes*

No abstract available.
Colorectal Neoplasms*