Clinical rheumatology · 2024
Glomerulonephritis in primary biliary cholangitis in China: an important complication.
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Bian Sainan, Wang Li, Fei Yunyun, Chen Hua, Zhang Fengchun
Аннотация
BACKGROUND: Extrahepatic manifestations in patients with primary biliary cholangitis (PBC) are frequently observed recently. We aimed in this study to explore the clinicopathological characteristics and prognosis of glomerulonephritis in patients with PBC.
METHODS: Consecutive PBC patients admitted to Peking Union Medical College Hospital from January 2002 to May 2019 were retrospectively enrolled. PBC patients with other autoimmune diseases which may have nephritis were excluded. Structured interview, systemic rheumatologic examination, and laboratory tests were conducted for each patient. Literature about patients with PBC and glomerulonephritis was reviewed and summarized.
RESULTS: Among the 330 PBC patients enrolled, glomerulonephritis were identified in 10 patients (3.0%). Eight (80.0%) were females and 2 (20.0%) were males. The mean age was 58.4 ± 9.5 years old. Membranous nephropathy (MN) was revealed in 4 patients, IgA nephropathy (IgA N) in 2 patients, minimal change disease (MCD) in 2 patients, mesangial proliferative glomerulonephritis in 1 patient, and renal amyloidosis in 1 patient. Compared to the literature reviewed, 10 cases of MN, 1 case of MCD, 1 case of IgA N, and 1 case of acute poststreptococcal glomerulonephritis (APSGN) were observed.
CONCLUSIONS: Glomerulonephritis may not be a well-recognized feature of PBC and is not a rare complication and deserved to be routinely screened in clinical practice. As MN is the most common form of glomerulonephritis in PBC patients and PBC can be asymptomatic at an early stage, patients presented with MN should be screened for PBC, so to avoid cirrhosis. Key Points • Patients with primary biliary cholangitis (PBC) can be complicated with glomerulonephritis, and membranous nephropathy (MN) is the most common form.
METHODS: Consecutive PBC patients admitted to Peking Union Medical College Hospital from January 2002 to May 2019 were retrospectively enrolled. PBC patients with other autoimmune diseases which may have nephritis were excluded. Structured interview, systemic rheumatologic examination, and laboratory tests were conducted for each patient. Literature about patients with PBC and glomerulonephritis was reviewed and summarized.
RESULTS: Among the 330 PBC patients enrolled, glomerulonephritis were identified in 10 patients (3.0%). Eight (80.0%) were females and 2 (20.0%) were males. The mean age was 58.4 ± 9.5 years old. Membranous nephropathy (MN) was revealed in 4 patients, IgA nephropathy (IgA N) in 2 patients, minimal change disease (MCD) in 2 patients, mesangial proliferative glomerulonephritis in 1 patient, and renal amyloidosis in 1 patient. Compared to the literature reviewed, 10 cases of MN, 1 case of MCD, 1 case of IgA N, and 1 case of acute poststreptococcal glomerulonephritis (APSGN) were observed.
CONCLUSIONS: Glomerulonephritis may not be a well-recognized feature of PBC and is not a rare complication and deserved to be routinely screened in clinical practice. As MN is the most common form of glomerulonephritis in PBC patients and PBC can be asymptomatic at an early stage, patients presented with MN should be screened for PBC, so to avoid cirrhosis. Key Points • Patients with primary biliary cholangitis (PBC) can be complicated with glomerulonephritis, and membranous nephropathy (MN) is the most common form.