Title: Clinical manifestations, diagnosis, and natural history of primary biliary cirrhosis
1IN THE NAME OF GOD
2Primary Billiary Cirrhosis
- Dr. Nasser Ebrahimi Daryani
- Professor of Gastroenterology
- Tehran University of Medical Sciences
3PBC
- T-lymphocyte-mediated attack on small
intralobular bile ducts that leads to their
gradual destruction and eventual disappearance. - 95 are women
- onset is usually between 30 to 65 y
- Incidence 2.7 per 100,000 person years
- Prevalence 65.4 for women and 12.1 for men per
100,000 persons
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8Laboratory tests
- AMA are the serologic hallmark of PBC
ELIZA 95 sensitive and 98 specific - Direct immunofluorescence less sensitive
- 13 of first-degree relatives of patients with
PBC have AMA suggesting they are susceptible to
developing PBC - Elevation of 5'-nucleotidase and GGT parallel
those of ALP. - ALTlt 5 UNL
- Bili elevates as the disease progresses
- Eosinophils in the blood liver
9AMAs may be found in patients with
other syndromes, particularly overlap syndromes
and autoimmune hepatitis (AIH), but also
occasionally in primary sclerosing cholangitis
(PSC) and drug-induced liver disease.
10- Hyperlipidemia (50)
- In early PBC LDL ? and VLDL ? and striking
elevations of HDL ? ? . - IgM ?
- ceruloplasmin ?
- bile acids ?
- hyaluronate ?(correlate with the serum bilirubin
and histologic worsening of PBC)
11- incidence of PBC appears to be increasing
- - 23 cases per million in 1987 to 32
cases per million in 1994 - possibly due to better detection rather than a
true change in disease incidence - Asymptomatic (up to 60)
- Symptoms signs
- at presentation
- Fatigue (85)
- Pruritus (55)
- Jaundice (10)
- RUQ pain (8)
- Hepatosplenomegaly (25)
- Metabolic bone disease (20)
- Xantholasma (10)
-
Associated disorders Sicca syndrome
(72-100) RTA (60) Arthritis (42) Gall stone
(33) Thyroid dysfunction (15-20) Scleroderma
(19) CREST (7) Raynaud's syndrome
(8) Hepatocellular carcinoma (2) Celiac disease
(rare)
12Symptoms Signs
- Pruritus may occur initially during pregnancy
and be mistaken for the pruritus of pregnancy. -
- Hyperpigmentation of skin(25-50)
-
- Arthropathy(42)
- RA(5-10)
- hypercholesterolemic arthropathy
- Hepatic decompensation(rarely)
- Advanced disease
- Spider nevi,
- muscle wasting,
- ascites,
- Edema
- Kayser-Fleischer rings
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17PROGNOSIS
- Patients with PBC who are asymptomatic at
diagnosis may have a better prognosis than those
who have symptoms. - Good prognosis in patients initially diagnosed
with mild disease who achieve a biochemical
response to UDCA . - UDCA in stage III or IV disease did not improve
survival or development of complications.
18Poor Prognosis
- Coexisting disorders related to PBC
- thyroiditis,
- sicca syndrome,
- Scleroderma
- Antinuclear antibodies
- Cigarette smoking
19DIAGNOSIS
- The diagnosis of PBC should be considered in
the patient, particularly a woman, who complains
of - Itching ,
- fatigue,
- jaundice,
- unexplained weight loss,
- with RUQ discomfort,
- and/or whose serum ALP is elevated.
20Liver biopsy
- PBC should be confirmed by percutaneous liver
biopsy when the diagnosis is first considered. - The biopsy will also provide information about
the stage of the disease and prognosis . - Exceptions are
- gt75y (or have a short life expectancy due to
comorbidities) - contraindications to liver Bx.
21Ursodeoxycholic Acid for the Treatmentof Primary
Biliary Cirrhosis
-
- The use of UDCA has been recommended for patients
with PBC who have positive tests for AMA and
elevated liver biochemical markers. - Some patients with PBC have positive tests for
AMA but have normal liver enzyme levels these
patients may eventually have clinical
manifestations of PBC (including histologic
changes)but are not considered candidates for any
therapy.
22- A liver biopsy is not essential for either the
- diagnosis of PBC or the initiation of
treatment. Although therapy with UDCA is most
effective in patients with stage I or II disease,
patients at any stage of disease are candidates
for such therapy. - At present, many patients do not undergo liver
biopsy before starting treatment with UDCA.
23- MECHANISM OF ACTION
- Inhibits absorption of toxic hydrophobic
endogenous bile salts - Stabilizes hepatocyte membranes against toxic
bile salts - Replaces endogenous hepatotoxic bile acids with
non toxic UDCA - Reduces expression of MHC class 12 antigens
- Reduces proliferation of colonocytes recurrence
of adenoma
24- UDCA appears to improve biochemical tests , but
its effect on the natural history of recurrent
PBC is uncertain. - UDCA was not associated with improved patient
and graft survival compared with untreated
patients in a retrospective study involving 52
patients with recurrent PBC
25- A dose of 13 - 15 mg /kg/d
- should be provided, with slow initiation( 250-mg
tablet given daily for 3 to 4 days, with
successive tablets added at intervals of 3 to4
days). - Monitoring of LFT( at 3-month intervals).
26- Drugs interactions with UDCA
- Clofibrate, cholestyramine, and other
cholesterol-binding or bile acidbinding
sequestrants. - Estrogens may increase biliary cholesterol
levels, whereas charcoal and some antacids may
bind bile acids. - The dose of UDCA does not have to be adjusted
for renal or other hepatic diseases.
27Liver transplantation in primary biliary cirrhosis
associated morbidity costly the optimal time
28Prognostic Models
- MELD 3.78Ln serum bilirubin (mg/dL) 11.2Ln
INR 9.57Ln serum creatinine (mg/dL) 6.43 - Risk score 0.87 log( Bilirubin in mg/dl)
- -2.53 log( Albumin
in mg/dl) - 0.039 log( Age in
years) - 2.38 log( PT in
seconds) - 0.859 edema score
- Log Risk 1.68( bleeding 0.25)
- 2.03 log ( Bilirubin
30.3)
29Predictors of Survival
30transplantation
- Bilirubin gt5 mg/dL
- Albumin lt2.8 g/dL
- Decompensation or portal hypertension ascites,
- variceal bleeding,
- coagulopathy
- malnutrition,
- or encephalopathy
- Intractable pruritus
- Recurrent, nontraumatic bone fractures
31- Liver transplantation is the only option for
patients with PBC with - life-threatening end-stage liver disease and its
complications - severe intractable symptoms (severe pruritus,
profound fatigue, and severe bone disease) - patients with PBC are good candidates for
transplantation and - have a better long-term prognosis compared to
those with other common
32OUTCOME
- relieves symptoms
- improves survival
- complications of end-stage liver disease,
(encephalopathy, variceal bleeding and
hepatorenal syndrome) are reversed - Jaundice and ascites (over a period of days to a
few months). - Splenomegaly (usually persists although the
enlarged spleen may decrease slightly in size) - Skin xanthomas (within a few weeks)
33Recurrence
- In a report of 421 patients from Pittsburgh
- 8 percent of patients after five years,
- 22 percent after 10 years.
-
- in a series of 400 patients from Birmingham
- 18 percent at five years
- and 30 percent at 10 years.
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35diagnosis of recurrent
- .Transplant for PBC and
- . Persistence of AMA and
- . Liver histology showing the characteristic
portal tract lesions - mononuclear inflammatory infiltrate,
- lymphoid aggregates,
- epithelioid granulomas,
- bile duct damage.
- Definite recurrent PBC when three of the four
portal tract lesions are present - probable recurrence when two are present.
36- A cholestatic pattern of liver biochemical
abnormalities is neither sensitive nor specific
for recurrence. - and can arise from multiple causes
- The presence of AMA does not establish that
recurrence is present or will develop. - AMA persist in most patients following
transplantation usually with a small and
transient fall in their titer.
37Risk factors for recurrence
- older recipient age,
- longer cold ischemia time,
- treatment with tacrolimus
- younger donor age.
38- azathioprine may have a protective effect
- recurrence is not typically associated with graft
loss -
- Although (UDCA) is the mainstay of treatment of
PBC pretransplant, its role in treatment of
recurrent PBC has not been defined
39Retransplantation
- Although there was initially some controversy,
recurrence of primary biliary cirrhosis (PBC) - has been reported and is estimated at about
10 to 20, occurring on an average 3 to 6 - years after transplantation. Progression of
recurrent PBC is often slow and may not - necessitate retransplantation
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143- ADMINISTRATION
- The biliary enrichment with UDCA is the same
whether it is taken in divided doses or as a
single dose . Compliance is likely better with
the latter regime. - van de Meeberg PC Wolfhagen FH Van
Berge-Henegouwen GP Salemans JM Tangerman A
van Buuren HR van Hattum J van Erpecum KJ. J
Hepatol 1996 Dec25(6)887-94.
144- Treatment with UDCA reduces the rate of
development of esophageal varices, but it does
not reduce the rate of bleeding from varices - .
- Lindor KD Jorgensen RA Therneau TM Malinchoc
M Dickson ER. Mayo Clin Proc 1997
Dec72(12)1137-40.
145- Treatment does not seem to benefit the symptom
of fatigue and has a variable effect on pruritus. - Heathcote EJ Cauch-Dudek K Walker V Bailey RJ
Blendis LM Ghent CN Michieletti P Minuk GY
Pappas SC Scully LJ et al. The Canadian
Multicenter Double-blind Randomized Controlled
Trial of ursodeoxycholic acid in primary biliary
cirrhosis. Hepatology 1994 May19(5)1149-56. - Treatment does not seem to benefit on
osteoporosis. - Lindor KD Janes CH Crippin JS Jorgensen RA
Dickson ER. Bone disease in primary biliary
cirrhosis does ursodeoxycholic acid make a
difference? Hepatology 1995 Feb21(2)389-92.
146- Treatment with UDCA has some benefit on the
development of portal hypertension. - Huet, PM, Huet, J, Deslauriers, J. Portal
hypertension in patients with primary biliary
cirrhosis. In Lindor, KD, Heathcote, EJ, Poupon,
R (Eds), Primary biliary cirrhosis From
pathogenesis to treatment. Kluwer Academic
Publishers, London 1998. p.87. -
- Small trials of combination therapy using UDCA
with methotrexate, colchicine, or prednisolone,
have been reported but have not shown any
increased efficacy over UDCA therapy.
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148- An initial response will be seen within a month
to 6 weeks. - Approximately 80 - 90 of full improvement
within 3 months. - Normalization of biochemical values 2 years in
20 of patients and additional 15 of patients
after 5 years. - No other followup testing needs to be done, and
liver biopsy is not routinely repeated to assess
the effect of therapy. -
-
-
149prediction of life expectancy
- The patients age
- Total levels of bilirubin
- Albumin
- The prothrombin time
- The presence or absence of edema and ascites
- Response of alkaline phosphatase
150Adverse Effects
- most common diarrhea
- Weight gain (averages 2.3 kg during the first1 to
2 years and not progressive) - Thinning of the hair
- Loose stools have been reported infrequently.
-
151MANAGEMENT OF COMPLICATIONS OF PBC
- Pruritus
- Cholestyramine is the drug of first choice (III
C). - In patients who fail or are intolerant to the
side effects of cholestyramine, rifampicin should
be used as a second line therapy (III C). - Opioid antagonists can be considered in
resistant cases (III C). - Liver transplantation is indicated for
uncontrollable pruritus (IV).
152- Sicca syndrome
- All patients should be asked directly about dry
eyes, dry mouth, dysphagia, and a dry vagina in
women, because patients often do not volunteer
these symptoms (III C). - If symptoms are present, appropriate therapy
should be offered.
153- Raynaud's syndrome
- prevent exposure of their hands and feet to the
cold and to stop smoking . - Calcium channel blockers may relieve symptoms in
the extremities but worsen esophageal
dysmotility. - Fat soluble vitamin deficiency
- In patients with hyperbilirubinemia, fat soluble
vitamin replacement is likely best given using
the water soluble form of the fat soluble
vitamins (III C).
154- Osteoporosis
- BMD should be assessed with dual X-ray
absorptiometry when the diagnosis of PBC is first
made and every two years thereafter. - Education regarding the importance of lifestyle
changes and vitamin D and calcium supplementation
should be given (III C). - HRTis recommended where appropriate (III C).
- If osteoporosis is evident, therapy with a
biphosphonate is advised (III D).
155- Portal hypertension
- PBC patients should be screened for the presence
of varices when first diagnosed and every three
years until found (III B, C). - If and when varices are found, standard
prophylactic measures should be taken.
156- Pregnancy
- It is currently recommended that any specific
therapy (eg, UDCA) be withheld in women with PBC
contemplating pregnancy (first trimester) . - UDCA therapy during the last trimester of
pregnancy appears to be safe and may be
beneficial in mothers with cholestasis (III C,
D). - Patients who are pregnant should undergo an
esophagogastroduodenoscopy to check for varices
and given nonselectiveb-blocker therapy if
varices are found. The obstetricianshould be
advised to minimize the duration of the second
stage of labor (III C)