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Biomedical subjects

H Akama

Publications and source records attributed to H Akama.

At least 19 recordsLinked to original sources
PubMed2001

Pancytopenia and colitis with Clostridium difficile in a rheumatoid arthritis patient taking methotrexate, antibiotics and non-steroidal anti-inflammatory drugs.

Methotrexate (MTX) is widely used despite its side-effects. We describe a rheumatoid arthritis (RA) patient taking low-dose MTX who developed severe pancytopenia and colitis with Clostridium difficile after the administration of antibiotics for acute pyelonephritis. Our case suggests that low-dose MTX may seriously interact with antibiotics and that these side-effects should always be considered when RA patients are treated with MTX and antibiotics.

Aged↗
PubMed2000

Changes in clinical features and long-term prognosis in patients with pheochromocytoma.

To investigate changes in preoperative clinical features and the long-term outcome of tumor recurrence, mortality, and morbidity in patients with pheochromocytoma, we retrospectively examined changes in the clinical features by comparing 49 patients from 1957 to 1985 (group I) with 46 patients from 1986 to December 1995 (group II). In addition in these 95 patients (excluding 2 who had died before operation), we evaluated long-term postoperative outcome from the initial operation to August 1996 (909 patient-years). The mean age in group II was older than that of group I. The percentage of patients having proteinuria or hypertensive retinopathy in group II was less than that in group I. Of 20 patients with incidentally discovered pheochromocytoma, 7 (35%) were > or =60 years old, 7 asymptomatic, and 11 (55%) normotensive. Plasma and urinary catecholamines in these patients were significantly (P < .01) lower than in patients with pheochromocytoma having typical clinical features. Long-term cohort study showed 14 deaths. Relative survival rates were 91% at 5 years and 83% at 10 years and unchanged thereafter. The Kaplan-Meier estimate of pheochromocytoma-free survival was shorter in patients with a larger-than-median (60 g) tumor weight. Six patients had malignant recurrence 3 to 101 months (median, 45 months) after the initial operation. Of 65 patients confirmed alive at follow-up, 11 were hypertensive. In the Cox model, hypertension-free survival was not associated with age, a family history of hypertension, duration of hypertension, or creatinine clearance. Pheochromocytoma should be diagnosed from a wide spectrum of clinical features including those that are not generally suspected of resulting from excess catecholamines or hypertension, and after surgery, patients with this disease should be followed-up carefully for a long period (at least 10 years) because of the risk of tumor recurrence and the high prevalence of disease.

Adolescent↗
PubMed2000

Progressive appearance of overlap syndrome together with autoantibodies in a patient with fatal thrombotic microangiopathy.

We describe an extraordinary patient with overlap syndrome (systemic lupus erythematosus, systemic sclerosis, and rheumatoid arthritis) having positive autoantibodies against Sm, double stranded DNA, DNA topoisomerase I, and centromere, together with rheumatoid factor. The patient had multiple organ involvement resulting from thrombotic microangiopathy that mimicked so-called normotensive scleroderma renal crisis, and died mainly of massive pulmonary hemorrhage caused by thrombotic thrombocytopenic purpura. The clinical presentations of the case support the concept of strong associations between disease-specific autoantibodies and clinical features.

Adult↗
PubMed2000

Rapidly progressive glomerulonephritis with D-penicillamine.

We present 3 cases of anti-myeloperoxidase, anti-neutrophil cytoplasmic antibody (MPO-ANCA)-positive rapidly progressive glomerulonephritis developed during the treatment with D-penicillamine (D-PC) for rheumatoid arthritis. Rheumatoid arthritis was diagnosed in these patients, and D-PC was administered to them at doses of 100, 200, and 300 mg per day for 32, 42, and 39 months, respectively. They developed proteinuria, hematuria, renal insufficiency, and anemia, and D-PC was stopped. On admission, MPO-ANCA was strongly positive in their sera. Renal biopsy showed glomerulonephritis with cellular crescents. Immunofluorescence examination revealed deposits of granular IgG, IgM, IgA, C1q, and C3 in the mesangium. The 3 patients were treated with steroid pulse therapy along with administration of anticoagulants, and cyclophosphamide was also used in 2 patients. Their renal function improved gradually and MPO-ANCA disappeared after immunosuppressive treatment.

Adult↗
PubMed1999

[A case of systemic lupus erythematosus complicated by Nocardia farcinica].

We report a patient with systemic lupus erythematosus (SLE) complicated with nocardiosis. This case is very important that the complication of nocardiosis in SLE is very rare and the treatment to both SLE and nocardiosis is very difficult. A twenty-one-year old female was admitted to our hospital because of thoracic empyema and active lupus nephritis. Her medical history revealed that the diagnose of SLE was made when she was 18 with lymphocytopenia, proteinuria, positive antinuclear antibodies, and high titer of antibodies to native DNA. She was treated with prednisolne 60 mg daily and became better. Proteinuria appeared again in September 1995 and she was admitted to the former hospital. Renal biopsy proved diffuse proliferative glomeluronephritis (WHO IVb). She was treated with 1 g per day of methylprednisolone for 3 days and succeeded with 60 mg day of prednisolone. In early November she developed left chest pain and fever and chest X-ray demonstrated left pleural effusion. Antibiotics, antituberculosis, and antifungal therapy failed to subside her pleuritis and it turned to empyema. Then she was transferred to our hospital for further treatment. Nocardia farcinica was detected from the aspirated pleural fluid obtained at the former hospital. Drainage and intrathoracic impenem injection were effective. While long usage of minocycline was continued for the nocardiosis, 500 mg of cyclophosphamide pulse therapy to lupus nephritis was administrated. Two weeks later a new pulmonary lesion with left chest pain and liver abscess developed. Administration of trimethoprim-sulfamethoxazole subsided the nocardiosis. She was discharged with 1 g per day of proteinuria the prescribed 13 mg per day of prednisolone and continuous TMP-SMZ intake for nocardial infection. When immunosuppressive therapy must be given to the immunocompromised host, a more potent therapy must be added to avoid infection.

Adult↗
PubMed1999

Multiple endocrine neoplasia type 2A with the identical somatic mutation in medullary thyroid carcinoma and pheochromocytoma without germline mutation at the corresponding site in the RET proto-oncogene.

A germline mutation either in exon 10 or 11 of the RET proto-oncogene is found in the majority of patients with multiple endocrine neoplasia type 2A (MEN 2A). A 41-year-old female patient was referred for further evaluation of incidentally discovered right adrenal tumor. She had bilateral adrenal pheochromocytomas and medullary thyroid carcinomas detected by endocrinological and radiological examination, and diagnosed as MEN 2A. Molecular genetic testing of the RET exons 10 and 11 exhibited the identical somatic missense mutation at codon 634 in both tumors but did not confirm germline mutations in the corresponding sites. Possible mechanisms for tumorigenesis in this patient are discussed.

Adrenal Gland Neoplasms↗
PubMed1999

[MPO-ANCA positive rapidly progressive glomerulonephritis in a patient with rheumatoid arthritis during treatment with D-penicillamine].

We present here a case of MPO-ANCA positive rapidly progressive glomerulonephritis (RPGN) after 34 months of D-penicillamine (D-PC) therapy for rheumatoid arthritis (RA). A 27-year-old Japanese woman was diagnosed as having RA in June 1994 at our out-patient clinic. Oral D-PC administration was initiated at a dose of 100 mg per day in January 1995. In August 1997, proteinuria, hematuria, renal insufficiency, and anemia developed. D-PC was withdrawn promptly, and prednisolone 5 mg per day was started. The patient was admitted to our hospital in September. On admission, anti-neutrophil cytoplasmic antibody against mycloperoxidase (MPO-ANCA) was strongly positive in the serum. Renal biopsy showed glomerulonephritis with cellular crescent formation in 60% of the glomeruli observed. Immunofluorescence examinations revealed deposits of granular IgG, IgA, C 1 q, and C 3 in the mesangium. The patient was treated with steroid pulse therapy along with administration of anti-coagulation and anti-platelet agents under the diagnosis of MPO-ANCA positive D-PC-induced RPGN. The renal function was gradually recovered and MPO-ANCA disappeared. Since RPGN is potentially a fatal disease, frequent monitoring of renal function and discontinuation of D-PC are required. In case MPO-ANCA becomes positive, prompt and correct diagnosis of the renal disorder could lead to a good prognosis as in this case. The present case may provide some important immunological insights into medical procedures to treat D-PC-induced RPGN and MPO-ANCA related glomerulonephritis.

Adult↗