A case-control study was conducted to investigate the effect of low-level blood lead on the blood pressure. The plasma renin activity (PRA) was measured also to investigate one of the possible mechanisms by which lead may play a role to influence on the blood pressure. Seventy-two hypertensive and sixty-nine control study subjects were selected from the workers who had no history of job-related lead exposure, in Ulsan city and it's vicinity, Korea. In addition to measuring blood lead levels and PRA, body mass index(BMI), hematocrit, serum sodium, potassium, creatinine, ionized calcium, and cholesterol were measured. Also, the habits of smoking, alcohol drinking and family history of hypertension were checked. The blood lead level of the hypertensive group was 19.8+/-5.5 microgram/dl, which was significantly higher than that of the control group, 12.5+/-4.7 microgram/dl (p<0.01). On multiple logistic regression analysis, the odds ratio of blood lead level on the occurrence of high blood pressure was 1.38, also statistically significant (p<0.01). There was no significant differences between the hypertensive and the control group in the PRA or In(PRA), but there was a marginally significant linear relationship between blood lead and PRA in the hypertensive group (p<0.1). In conclusion, blood lead level which has been known to be within normal limits may be one of the possible risk factors of hypertension and PRA alteration by lead may act as one of the mechanisms.
Alcohol Drinking ; Blood Pressure* ; Calcium ; Case-Control Studies ; Cholesterol ; Creatinine ; Hematocrit ; Humans ; Hypertension ; Korea ; Logistic Models ; Odds Ratio ; Plasma* ; Potassium ; Renin* ; Risk Factors ; Smoke ; Smoking ; Sodium ; Ulsan

A myocardial beidge is an anatomic arrangement in which an epicardial coronary artery becomes engulfed for a limited segment by mycardial fibers. Myocardial bridges are not uncommon finding at coronary angiography and are identified by the systolic narrowing of the affected artery, mainly the left anterior descending coronary artery. The significance of myocardial beidges is controversial. These are frequently found at autopsy, and have been associated with episodic angina, tachcardia-induced ischemia amd sudden death during strenuous exercise. It has been suggested that clinical mamifestations of myocardial ischemia could be the result of severe reductions in the myocardial blood flow during the systole caused by the mylcardial bridge. We report two cases of myocardial damage occuring in a previous asymptimatic patients, hacing myocardial beidge in a left anterior descending coronary artery. This report strengthens the view that myocaridal bridges may, on occasion, cause ischemis
Arteries ; Autopsy ; Coronary Angiography ; Coronary Vessels ; Death, Sudden ; Humans ; Ischemia ; Myocardial Ischemia ; Systole

Proximal femoral focal deficiency (PFFD) in early infancy is characteristic by quite shortening of the tight segment, flexed, abducted and externally rotated position In assciation with a stable hip which Is freely mobile. Authors experienced a case with the congenital deficiency of the femoral head. The case showed the normal femoral segment and no any other bony anomalies which cannot be Included in Aitkens or Amstutz's classification.
Classification ; Head ; Hip

No abstract available.
Anemia, Aplastic* ; Hepatitis*

No abstract available.
Hepatitis B Vaccines* ; Hepatitis B* ; Hepatitis* ; Hot Temperature* ; Humans ; Intellectual Disability*

No abstract available.
Histiocytosis*

No abstract available.
Hepatitis B Vaccines* ; Hepatitis B* ; Hepatitis* ; Hot Temperature* ; Humans ; Intellectual Disability*

No abstract available.
Dysentery, Bacillary*

No abstract available.
Breast* ; Glucuronidase* ; Lipase* ; Milk, Human*

No abstract available.
Panniculitis ; Panniculitis, Nodular Nonsuppurative*