Myoglobin has been shown to be elevated in the serum after myocardial infarction. Myoglobin is one of the first to appear in the serum and its quantification may thus be used in the diagnosis of the early phase of acute myocardial infarction. The purpose of this study was to clarify the time course of myoglobin elevation in the early phase of acute myocardial infarction. We compared this with the time course of serum CPK and obtained following results: 1) Serum myoglobin becomes significantly elevated at 4 hours following onset of chest pain and apears earlier than CPK. 2) Serum myoglobin time curve peaks at 8 hours, whereas the CPK time surve peaks at 16 hours following onset of chest pain. 3) Mearsurement of serum myoglobin in the early phase of acute myocardial infarction can serve as valuable aid in diagnosis of myocardial infarction with other findings.
Chest Pain ; Diagnosis ; Myocardial Infarction* ; Myoglobin*

Uterine rhabdomyosarcoma (RMS) typically presents as a mixed epithelial and mesenchymal tumors. Pure RMSs of the female genital tract are uncommon. Spindle cell variant of RMS is a rare morphologic subtype of embryonal RMS and mostly occurs in the paratesticular region of children. Here, we present a case of uterine spindle cell RMS in a 76-year-old woman. The tumor, 20x15x7 cm in size, was highly necrotic and adherent to the colon and rectum. Tumor cells were mostly spindle-shaped, and isolated rhabdomyoblasts were scattered. Immunohistochemical stains for myoglobin and myo-D1 showed diffuse positivity for tumor cells. The patient died only of disease three months after diagnosis.
Child ; Colon ; Coloring Agents ; Female ; Humans ; Myoglobin ; Rectum ; Rhabdomyosarcoma ; Uterus

Serum myoglobin concentrations were studied in 46 patients during orthopedic and plastic operations that required the application of a pneumatic limb tourniquet. Serum myoglobin was measured at preoperation, during tourniquet and after touriquet release. In the general anesthesia patients, serum myoglobin was after tourniquet release(172.72+/-29.49 ng/ml) significantly increased(p<0.01) than at preoperation(103.06+/-24.03 ng/ml). In the regional block patients, serum myoglobin after tourniquet release(117.69+/-10.08ng/ml) also increased(p<0.05) than at preoperation(67.08+/-14.99ng/ml). In the male patients, serum myoglobin was significantly increased(p<0.05) during tourniquet and after tourniquet release(123.36+/-15.42ng/ml & 158.86+/-21.10ng/ml) than at preoperation (93.58+/-17.11ng/ml). In the female patients, there was no significant difference to regardless of tourniquet application. In the patients that tourniquet application time was within one hour, serum myoglohin was significantly increased(p<0.01) during tourniquet and after tourniquet release(125.66+/-18.86 & 126.20+/-14.99ng/ml) than at preoperation(86.12+/-15.29ng/ml). In the patients that tourniquet application time was over one hour, serum myoglobin was sig- nificantly increased(p<0.01) during tourniquet(l05.92+/-21.84ng/ml) than at preoperation(91.16+/-31.17ng/ml) and in the after tourniquet release(183.88+/-40.96ng/ml), serum myoglobin was more significantly(p<0.05) increased than during tourniquet.
Anesthesia, General ; Extremities ; Female ; Humans ; Male ; Myoglobin* ; Orthopedics ; Plastics ; Tourniquets*

The STRATUS CS200 (Siemens Healthcare Diagnostics Inc., USA) has recently been developed as an on-site diagnostic instrument for assaying several kinds of cardiac markers within a short duration. The precision, linearity, comparison, limit of quantification, and turnaround time (TAT) were evaluated for troponin I, creatine kinase-MB (CK-MB), N-terminal pro-brain natriuretic peptide (NT-proBNP), and myoglobin assays according to guidelines provided by the Clinical and Laboratory Standards Institute. The total coefficients of variation of the four items were between 1.90% and 4.25%. All markers showed a linearity that was ≥0.99, and the values were within the manufacturer's range. All items showed a close correlation with E170 (Roche Diagnostics, Germany). The limits of quantification for troponin I, CK-MB, myoglobin, and NT-proBNP were 0.03 ng/mL, 0.3 ng/mL, 1 ng/mL, and 15 pg/mL, respectively. The TAT was 14 minutes. The performance of the STRATUS CS200 for assaying cardiac markers was highly satisfactory in terms of the precision, linearity, limit of quantification, and TAT, and it showed a good correlation with the comparative method.
Creatine ; Delivery of Health Care ; Methods ; Myoglobin ; Troponin I

Hemin blocked lipid peroxidations induced by either ascorbate/FeSO4, a metal-catalyzed oxidation system, or 2,2'-azobis-2-amidino-propane hydrochloride (ABAP) which produces peroxy radicals at constant rates. Hemin at very low micromolar concentrations strongly inhibited the ascorbate/FeSO4-induced peroxidation of rat liver phopholipids, soybean phosphatidylcholine and arachidonic acid, and this inhibition was also evident with the use of ABAP, although much higher concentrations of hemin were required than those for the inhibition of ascorbate/FeSO4-induced lipid peroxidation. However, hemoproteins such as hemoglobin, myoglobin and cytochrome C did not show any significant effect on this lipid peroxidation. Hemopexin and albumin abolished the inhibitory action of hemin. During incubation with ascorbate/FeSO4 or ABAP, hemin underwent a change in its absorption spectrum, resulting in a progressive decrease in the peak height of the characteristic absorption band at 385 nm. The above results suggest that hemin may act as an important antioxidant in vivo, protecting lipids from the peroxidative damage.
Absorption ; Animals ; Arachidonic Acid ; Cytochromes c ; Hemin* ; Hemopexin ; Lipid Peroxidation* ; Liver ; Myoglobin ; Phosphatidylcholines ; Rats ; Soybeans

Hyperthyroidism has been associated with changes in muscle function such as thyrotoxic myopathy, thyrotoxic periodic paralysis and thyroid opthalomopathy, but rarely rhabdomyolysis. Usually serum creatinine kinase is either normal or low in hyperthyroidism. Only 3 reports described association between rhabdomyolysis and hyperthyroidism, no previous literatures have thyrotoxic periodic paralysis associated rhabdomyolysis. Patients with hypokalemic periodic paralysis sometimes elevated serum muscle protein during recovery from paralytic attack, but the mechanism was not well known. We report a patient who presented with clinical feature of thyrotoxic periodic paralysis and increasing serum CK, myoglobin during recovery from paralysis.
Creatinine ; Humans ; Hyperthyroidism ; Hypokalemic Periodic Paralysis ; Muscle Proteins ; Muscular Diseases ; Myoglobin ; Paralysis* ; Phosphotransferases ; Rhabdomyolysis* ; Thyroid Gland

Rhabdomyolysis is a serious and potentiallylethal disease that can develop from a variety of traumatic and nontraumatic conditions. In this report, the authors describe a case of rhabdomyolysis that occurredafter a body-building tournament. A 32-year-old body-builder was admitted due to quadriplegia and muscle pain. The patient had a serum potassium level of 1.8 mmol/L, creatinine phosphokinase level of 5,414 IU/L and urine myoglobin of 128.1 ng/ml. He had taken anabolic androgenic steroids for 6 months and overate himself with carbohydrate food after the tournament. Possible causes for the rhabdomyolysis were hypokalemia, exercise, and anabolic androgenic steroids, etc. His condition was fully recovered without complications after potassium replacement and general supportive care. Body- builders may be exposed to rhabdomyolysis risk factors such as diet control, weight reduction, and taking steroids. Therefore, special attention and education on rhabdomyolysis should be provided to body-builders.
Adult ; Creatinine ; Diet ; Humans ; Hypokalemia ; Muscles ; Myoglobin ; Potassium ; Quadriplegia ; Rhabdomyolysis ; Risk Factors ; Somatotypes ; Steroids ; Weight Loss

The classic signs and symptoms of rhabdomyolysis are non-specific and not present in all cases, and mild cases might go unrecognized. We present a case of rhabdomyolysis recognized in a 68-year-old man after elevation of liver enzymes following prolonged urologic surgery. The patient's postoperative course was concerned with elevated serum aspartate aminotransferase and alanine aminotransferase without any clinical manifestations on the first postoperative day. After examining the serum creatine kinase and myoglobin levels, the patient was diagnosed with rhabdomyolysis. After 16 days, he was discharged with fully recovered liver enzymes and creatine kinase. We suggest that sufficient perioperative attentions should be given to patients at a higher risk of rhabdomyolysis.
Aged ; Alanine Transaminase ; Aspartate Aminotransferases ; Attention ; Creatine Kinase ; Humans ; Liver ; Myoglobin ; Rhabdomyolysis

MHS is a myopathic disorder transmitted by a dominant autosomal gene. The seriousness of the problem is underscored by the fact that the mortality rate, until recently, has ranked the highest among the complications of modern anesthesia. During halothane anesthesia we experienced a case of MHS with high temperature and rigidity after succinylcholine, observed change of serum electrolytes, and noted CPK and myoglobin in the urine. The patient was managed with surface cooling, bicarbonate, diurectics, mechanical ventilator and corticosteroids. The patient survived without any sequelae and was discharged after 10 days.
Adrenal Cortex Hormones ; Anesthesia ; Electrolytes ; Halothane ; Humans ; Malignant Hyperthermia* ; Mortality ; Myoglobin ; Succinylcholine ; Ventilators, Mechanical

OBJECTIVES: In coronary arterial disease, quantitative assessment of the extent of myocardial damage is important both in management of the patient and prediction of prognosis. Measurement of serum Troponin-T is a new method for detecting myocardial cellular injury, used as more specific marker of tissue damage and reperfusion status in acute myocardial infarction, This study was performed to evaluate the significance of serum Troponin-T measurement in various acute chest pain syndrome. METHODS: 37 patients who presented anterior ischemic chest pain enrolled from April, 1994 to September, 1995, From the initial period of admission, serial measurements of serum level of cardiac enzymes (CK, CK MB, Myoglobin, Troponin-T) were made. Then release time, peak time and normalization time of each enzyme were derived and compared each other. To evaluate whether Troponin-T level can reflect the extent of ischemic injury, correlation between peak Troponin-T level and peak CK MB level was analysed by regression method. RESULTS: 1) Acute myocardial infarction was confirmed in 15 cases; Q-wave myocardial infarction was 10 cases(anterior wall-5 cases, inferior wall-4 cases, lateral wall-1 cases), and non Q-wave myocardial infarction was 5 cases. Unstable angina was 22 cases. All cases had significant stenosis in coronary angiography. 2) The appearance in the serum level of 4 cardiac enzymes was as follows. The release time(hours) of 4 cardiac enzymes(Troponin-T, CK, CK MB, Myoglobin) were 7.1(1-30), 9.3(1-30), 9.9(1-30), 6.2(1-30). The peak time(hours) of 4 cardiac enzymes were 23.0(1.5-96), 21.6(2-66), 16.9(2-42), 12.7(3-40). The normalization time(hours) of the enzymes were over 72, 53.7(11-86), 52.3(11-94), 32.3(10-82). 3) Elevation pattern of cardiac enzymes showed concordance of all 3 enzymes(Troponin-T, CK MB, Myoglobin) in 29 of 43 cases(67.4%), There was concordance of 2 enzymes in 10 cases; 5 cases of CK MB and Myoglobin, 5 cases of Troponin-T and Myoglobin. In 4 cases, only Myoglobin level was increased. 4) There was significant correlation between peak Troponin-T level and peak CK level(r=0.66, p=0.0178), significant correlation was also observed between peak Troponin-T level and peak CK MR level(r=0.90, p=0.0001). CONCLUSION: In acute myocardial infarction serum Troponin-T was detectable as early as CK MB, and lasted longer after other enzyme level was normalized. There was significant correlation between peak Troponin-T level and peak CK, CK MB level, suggesting Troponin-T as useful marker for assessing the extent of myocardial damage.
Angina, Unstable ; Chest Pain ; Constriction, Pathologic ; Coronary Angiography ; Humans ; Myocardial Infarction ; Myoglobin ; Prognosis ; Reperfusion ; Troponin T*