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A nonhuman primate model of Gilbert's syndrome. 1984

O W Portman, and J Roy Chowdhury, and N Roy Chowdhury, and M Alexander, and C E Cornelius, and I M Arias

A Bolivian population of squirrel monkeys, Saimiri sciureus, exhibits several features of Gilbert's syndrome in man, and is proposed as a nonhuman primate model of the condition. The Bolivian population was found to have higher fasting (40.6 +/- 2.7 microM; mean +/- S.E.) and postcibal (9.9 +/- 0.9 microM) plasma unconjugated bilirubin concentrations (p less than 0.001) than a closely related Brazilian population (fasting 5.5 +/- 0.7 microM); postcibal (2.4 +/- 0.7 microM). After intravenous administration of [3H]bilirubin as a tracer dose or at 3.4 mumoles per kg body weight, there was delayed plasma clearance in the Bolivian monkeys. Hepatic UDP-glucuronyl transferase activity for bilirubin (164 +/- 25 nmoles per 30 min per gm liver) and biliary bilirubin diglucuronide to monoglucuronide ratios (2.9 +/- 0.2) were lower in Bolivian monkeys than in Brazilians (421 +/- 36 nmoles per 30 min per gm liver--p less than 0.01 and 4.1 +/- 0.1--p less than 0.02, respectively). Hepatic cytosol glutathione-S-transferase B activity (ligandin) levels were similar for the two populations. After phenobarbital therapy, fasting (11.1 +/- 0.9 microM) and postcibal (5.3 +/- 1 microM) plasma bilirubin concentrations in Bolivian monkeys were significantly reduced (p less than 0.001). Sulfobromophthalein clearance was slightly slower in the Bolivian than in the Brazilian monkeys. SGOT, lactate dehydrogenase, gamma-glutamyl transpeptidase and alkaline phosphatase activities were not increased in Bolivians. Fasting serum conjugated bile salt concentrations in Bolivian monkeys were lower than that in Brazilian monkeys (p less than 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)

UI MeSH Term Description Entries
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008111 Liver Function Tests Blood tests that are used to evaluate how well a patient's liver is working and also to help diagnose liver conditions. Function Test, Liver,Function Tests, Liver,Liver Function Test,Test, Liver Function,Tests, Liver Function
D010634 Phenobarbital A barbituric acid derivative that acts as a nonselective central nervous system depressant. It potentiates GAMMA-AMINOBUTYRIC ACID action on GABA-A RECEPTORS, and modulates chloride currents through receptor channels. It also inhibits glutamate induced depolarizations. Phenemal,Phenobarbitone,Phenylbarbital,Gardenal,Hysteps,Luminal,Phenobarbital Sodium,Phenobarbital, Monosodium Salt,Phenylethylbarbituric Acid,Acid, Phenylethylbarbituric,Monosodium Salt Phenobarbital,Sodium, Phenobarbital
D002427 Cebidae A family of New World monkeys in the infraorder PLATYRRHINI, consisting of nine subfamilies: ALOUATTINAE; AOTINAE; Atelinae; Callicebinae; CALLIMICONINAE; CALLITRICHINAE; CEBINAE; Pithecinae; and SAIMIRINAE. They inhabit the forests of South and Central America, comprising the largest family of South American monkeys. Platyrrhina,Platyrrhinas
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D004905 Erythrocyte Aging The senescence of RED BLOOD CELLS. Lacking the organelles that make protein synthesis possible, the mature erythrocyte is incapable of self-repair, reproduction, and carrying out certain functions performed by other cells. This limits the average life span of an erythrocyte to 120 days. Erythrocyte Survival,Aging, Erythrocyte,Survival, Erythrocyte
D005878 Gilbert Disease A benign familial disorder, transmitted as an autosomal dominant trait. It is characterized by low-grade chronic hyperbilirubinemia with considerable daily fluctuations of the bilirubin level. Constitutional Liver Dysfunction,Familial Nonhemolytic Jaundice,Gilbert Syndrome,Gilbert's Disease,Gilbert's Syndrome,Gilbert-Lereboullet Syndrome,Hyperbilirubinemia 1,Hyperbilirubinemia I,Hyperbilirubinemia, Arias Type,Meulengracht Syndrome,Unconjugated Benign Bilirubinemia,Arias Type Hyperbilirubinemia,Arias Type Hyperbilirubinemias,Disease, Gilbert,Disease, Gilbert's,Gilberts Disease,Gilberts Syndrome,Hyperbilirubinemia 1s,Hyperbilirubinemias, Arias Type,Syndrome, Gilbert,Syndrome, Gilbert's
D006933 Hyperbilirubinemia, Hereditary Inborn errors of bilirubin metabolism resulting in excessive amounts of bilirubin in the circulating blood, either because of increased bilirubin production or because of delayed clearance of bilirubin from the blood. Rotor Syndrome,Hyperbilirubinemia, Rotor Type,Hereditary Hyperbilirubinemia,Hereditary Hyperbilirubinemias,Hyperbilirubinemias, Hereditary,Rotor Type Hyperbilirubinemia,Syndrome, Rotor
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001663 Bilirubin A bile pigment that is a degradation product of HEME. Bilirubin IX alpha,Bilirubin, (15E)-Isomer,Bilirubin, (4E)-Isomer,Bilirubin, (4E,15E)-Isomer,Bilirubin, Calcium Salt,Bilirubin, Disodium Salt,Bilirubin, Monosodium Salt,Calcium Bilirubinate,Hematoidin,delta-Bilirubin,Bilirubinate, Calcium,Calcium Salt Bilirubin,Disodium Salt Bilirubin,Monosodium Salt Bilirubin,Salt Bilirubin, Calcium,delta Bilirubin

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