Successful Treatment of Infectious Endocarditis Associated Glomerulonephritis Mimicking C3 Glomerulonephritis in a Case with No Previous Cardiac Disease

Table 1

Laboratory data at the time of admission.

Blood		Urine
Blood count		Dipstick test
White blood cell	13,400/mm^3	Protein	1+
Eosinophil	0%	Glucose	(−)
Red blood cell	295 × 10^4/mm^3	Occult blood	(±)
Hemoglobin	8.7 g/dL	Sediment
Hematocrit	24.7%	Leukocyte	10–19/HPF
Platelet	5.0 × 10^4/mm^3	Red blood cell	1–4/HPF
Biochemical tests		Epithelial cell	0-1/HPF
Total protein	6.4 g/dL	Red blood cell cast	0-1/HPF
Albumin	1.5 g/dL	Biochemical analysis
Aspartate-aminotransferase	24 IU	Urine protein	0.61 g/gCr
Alanine-aminotransferase	22 IU	N-Acetyl--D-glucosaminidase	52.3 U/mL
Lactate dehydrogenase	220 IU	2-Microglobulin	3,720 g/L
Blood urea nitrogen	97.5 mg/dL	1-Microglobulin	180 mg/L
Cr	6.11 mg/dL
Uric acid	14.5 mg/dL
Sodium	134 mEq/L
Potassium	4.5 mEq/L
Chloride	94 mEq/L
Calcium	7.6 mg/dL
Phosphate	5.5 mg/dL
Creatine kinase	43 IU/L
Fasting blood glucose	111 mg/dL
HbA1c	5.8%
eGFR	9.2 mL/min/1.73 m^2
Immunology
C-reactive protein	27.84 mg/dL
Procalcitonin	4.0 ng/mL
Immunoglobulin G	2,190 mg/dL
Immunoglobulin A	364 mg/dL
Immunoglobulin M	87 mg/dL
Complement 3	142 mg/dL (65–135)
Complement 4	30 mg/dL (13–35)
CH50	52 U/mL (22–58)
Anti-streptolysin O	37.6 U/mL
Hepatitis B surface antigen	(−)
Hepatitis C virus antibody	(−)
Human immunodeficiency virus antibody	(−)
RF	10.0 U/mL
Antinuclear antibody	(−)
MPO-ANCA	1.0 U/mL (<3.5)
PR3-ANCA	21.3 U/mL (<3.5)
Cryoglobulin	(−)

Creatinine: Cr; MPO-ANCA: myeloperoxidase-anti-neutrophil cytoplasmic antibody; PR3-ANCA: proteinase 3-anti-neutrophil cytoplasmic antibody. The figure in the parenthesis shows the normal range.