Identification of a Link between Framingham Risk Score and Fracture Risk Assessment Tool / 대한내과학회지

BACKGROUND/AIMS: Although trials have suggested an association between osteoporosis and cardiovascular disease (CVD), the relationship between fracture risk and cardiovascular disease is not well defined. Here, we examined whether subjects with a higher risk of fracture also share an increased likelihood of developing CVD. METHODS: This study included 477 subjects; patients with a history of diabetes, chronic hepatopathy, nephritic syndrome, or any cardiovascular diseases were excluded. We used dual energy X-ray absorptiometry to assess the bone mineral density (BMD) of the lumbar spine and femur, and calculated fracture risk based on the Fracture Risk Assessment (FRAX) score. The Framingham risk score (FRS) was used to estimate cardiovascular risk. RESULTS: Of the 477 subjects, 222 had osteopenia and 150 had osteoporosis; the remaining 105 had a normal BMD. In men, no significant differences were observed in systolic blood pressure (SBP), diastolic blood pressure, low-density lipoprotein, high-density lipoprotein (HDL), and triglyceride (TG) between groups. Men with osteoporosis were generally older, and had significantly higher total cholesterol (TC). In women, age and FRS were significantly higher in the osteoporosis group. In the multivariate analysis, age, SBP, TC, HDL, TG, and FRAX were all significantly associated with FRS. CONCLUSIONS: These data suggest that patients with a higher risk of fracture are also at greater risk of developing CVD, indicating a possible mechanistic link between CVD and osteoporosis.

A Case of Rheumatoid Arthritis Accompanied by Thrombotic Thrombocytopenic Purpura / 대한내과학회지

Thrombotic thrombocytopenic purpura (TTP) is a blood coagulation disorder that damages numerous organs, including the kidney, heart and brain. Features indicative of TTP include thrombocytopenia, microangiopathic hemolytic anemia, neurologic symptoms, kidney failure and fever. Infections, toxins, pregnancy and, rarely, autoimmune diseases are all known to be associated with TTP. We encountered a rare case of rheumatoid arthritis accompanied by TTP following tympanoplasty. The patient's confusion, thrombocytopenia and renal failure all improved after plasmapheresis and high-dose glucocorticoid therapy, but she eventually expired due to sepsis. We report on this case herein and also review the relevant literature.

Distal Renal Tubular Acidosis Caused by Tacrolimus in a Systemic Lupus Erythematosus Patient: A Case Report / 대한내과학회지

Renal tubular acidosis (RTA) refers to a group of disorders involving transport defects in bicarbonate reabsorption or hydrogen excretion. Features like metabolic acidosis with a normal anion gap, neurological symptoms, and electrolyte imbalances indicate RTA. Kidney transplantation, cirrhosis, sickle cell anemia, medications, and autoimmune diseases, particularly Sjogren's syndrome and rheumatoid arthritis, are related to RTA. We encountered a rare case of a patient with systemic lupus erythematosus accompanied by RTA secondary to tacrolimus administration, who had muscle weakness and paralysis. Her symptoms improved after discontinuing tacrolimus and correcting the acidosis and potassium levels. Here, we report on this case and review the relevant literature.