Bile Of Animals Research Articles

A comparative study on the antipyretic effect and underlying mechanisms of different bile-fermented Arisaemas

Ethnopharmacological relevanceCattle bile Arisaema (CBA) and Pig bile Arisaema (PBA) are both processed products fermented from Arisaema erubescens (Wall.) Schott and animal bile, which are recorded in China Pharmacopoeia. Traditionally, bile Arisaema was often used for clearing heat and eliminating phlegm, calming wind and calming panic. Modern pharmacological researches suggest that both two drugs exert an antipyretic effect, while there is lack of the systematical and comparative evidence on underlying mechanism. Aim of the studyTo comprehensively clarify the differences and underlying mechanisms of antipyretic effect of the two drugs. MethodsIn this study, an accurate and reliable detection method based on ultra-performance liquid chromatography coupled with triple quadrupole mass spectrometry (UPLC-TQ MS) for comparing the content difference of bile acids from the two drugs was successfully established and applied. Besides, a dry yeast-induced fever rat model was established, and rectal temperature and content of pyrogenic cytokines were conducted to evaluate the antipyretic effect of CBA and PBA. Serum and hypothalamus untargeted metabolomics analysis based on ultra-performance liquid chromatography coupled with quadrupole-time of flight-mass spectrometry (UPLC-Q-TOF-MS/MS) technology were performed for elucidating the changes of metabolic profile. ResultsThe results indicated that CBA and PBA both exerted a significantly antipyretic effect, but CBA showed the characteristic of quicker onset and longer duration than that of PBA. The ELISA and western blotting analysis exhibited that the underlying antipyretic mechanism of the two drugs was closely associated with inhibiting inflammation through regulating TLR4/NF-κB signaling pathway. Moreover, the metabolism pathway analysis revealed that lipid metabolism and amino acid metabolism were greatly disturbed, which showed a certain correlation with antipyretic effect of two drugs. ConclusionCollectively, our results delineate a potential mechanism of two different bile Arisaemas against febrile via regulating metabolic disorders and targeting inhibition of inflammation for the improvement of fever symptom of the body. Notably, our current study suggested that CBA might be a better choice for suppressing fever clinically.

Revealing the optimal traditional processing methods and its protective effects against febrile seizures of Arisaema cum bile.

Arisaema cum bile (known as Dan Nanxing in Chinese, DNX) is a herbal medicine used for treating febrile seizure (FS), which commonly prepared by using Arisaematis Rhizoma and animal bile. This study was designed to explore the optimal processing time of DNX and its potential mechanism on the anti-FS effect. A total of 17 volatile organic compounds (VOCs) were the characteristic ones to distinguish different fermentation stages of DNX by using gas chromatography-ion mobility spectrometry (GC-IMS), such as 2-heptanone monomer, and heptanal monomer. DNX with fermentation for 3 months had an obvious pattern of VOCs with others, which could be regarded as the optimal fermentation time. The Enterococcus and Staphylococcus might be the core bacteria on the production of VOCs. Additionally, DNX (2.8 g/kg, p.o.) reversed hot water bath-induced FSs of rats, as indicated by increased seizure latency and decreased seizure duration time. It also prevented hippocampal neuronal loss, increased GABAAR, and decreased GRIA1 expression. At the genus level, relative abundance of Enterococcus and Akkermansia were enriched after DNX treatment. These findings suggested that fermentation for 3 months might be the optimal process time for DNX, and DNX possess an anti-FS effect through regulating neurotransmitter disorder and gut microbiota.

Potential of Animal Bile as Bio-molluscicide against Land Snail Monacha cartusiana

Background: One of the pests that can be detrimental to crops in agroecosystems is the land snail, also known as Monacha cartusiana. Molluscicides that are chemical are the first line of defense against land snails; however, because of their toxicity to both land and aquatic life, there has been an increase in interest in the discovery of biological molluscicides that are acceptable and eco-friendly. These molluscicides are a natural and environmentally safe alternative to synthetic poisons. Methods: The purpose of this study is to examine the efficacy of animal bile liquid against Monacha cartusiana in vitro. Molluscicides were tested using a dipping approach on snails isolated from agricultural land. PBS was utilized as a control. Furthermore, four different concentrations of extract (12.5, 25, 50 and 100%) were evaluated across different periods, and changes in snail viability were recorded (5, 10, 20 and 40 minutes). A chemical analysis was carried out using GC-MS to determine the presence of numerous expected active chemical components in animal bile fluids. Result: The results clear that the bile had significant efficacy in killing snails at 100%, 61%, 41% and 20% after 20 hours. The findings suggest that bile contains potent chemicals and is a promising strategy for molluscicide. More research is needed to identify the specific active compounds found in animal bile, as well as their modes of action and application in vivo.

Содержание общих желчных кислот в крови и желчи лабораторных животных

In the human or animal organism, bile acids influence the carbohydrate and lipid metabolism and participate in the process of emulsification of food lipids, cholesterol, and fat-soluble vitamins in the intestinal lumen. Most frequently the change in level and composition of lipid acids is associated with pathologies of the hepatobi­liary system. When researching the pharmacodynamic activity of some medications on experimental models of pathology of the hepatobiliary system of laboratory animals, one of the rating parameters is the level of common bile acids in different biological materials. For the analysis and interpretation of the level of common bile acids, it is necessary to consider the species of the animal, the composition of the feed used and the fasting regime. It is also important to consider the kind of analyzed biological material and an array of other factors which are capable of influencing the defined index and the research results. This article provides data on the level of common bile acids in peripheric blood and in the bile of intact mature laboratory animals. A low level of common bile acids in the blood serum was recorded throughout the experiment in comparison to data received from the bile. The received results variate significantly in dependence on the animal species and the material analyzed. Individual values of bile acids in the blood of all animals did not extend beyond 48,7 µmol/l, while in the bile intervals were within the limits of 8,2 to 8710,7 mmol/l, in dependence on the animal species. Minimal bile acids’ values in blood, as the minimal ones in the bile, were recorded in ferrets: 0–0,6 µmol/l и 226–8711 mmol/l accordingly, which is most probably linked to the nourishment of carnivore mammals, at the same time the highest values were recorded in rabbits [24,4 (16,7; 34,5) µmol/l], which can also be linked with features of digestion of the herbivores. Values of bile acids in the bile of rodents were much lower in comparison with other species, the guinea pigs had the lowest boundaries of values — 19±2 mmol/l. The conducted analysis had discovered a high variety of the level of common bile acids in blood and bile of different animal species and in bounds of one species, which can complicate the interpretation of data while rating the influence of a medication. As a result of this, while planning a research linked with the definition of the level of common bile acids, augmentation of animal sampling is necessary as well as the planning and the controlling of uniformity of the selection of biological material.

Metabolomic and lipidomic studies on the intervention of taurochenodeoxycholic acid in mice with hyperlipidemia.

Bile acids are the main component of animal bile and are directly involved in the metabolic process of lipids in vivo. Taurochenodeoxycholic acid (TCDCA) is the primary biologically active substance in bile acids and has biological functions such as antioxidant, antipyretic, anti-inflammatory, and analgesic activities and improves immunity. In the present study, we assessed the impact of TCDCA on hyperlipidemia development in mouse models. Mice were fed a high-fat diet (HFD) to induce hyperlipidemia and orally administered different doses of TCDCA orally for 30 days. Then, indicators such as triglyceride (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) in mice were detected. Using HE and ORO staining techniques, the morphology of the mice's liver tissue was detected. Based on metabolomic and lipidomic analyses, we determined the mechanism of TCDCA in treating hyperlipidemia. The results showed that TCDCA had a significant ameliorating effect on dietary hyperlipidemia. In addition, it exerted therapeutic effects through glycerophospholipid metabolism.

Phospholipid composition of bile and blood in rats under correction of experimental fatty hepatosis

To date, the aetiology and molecular mechanisms of the development of fatty hepatosis, which is quite common in mammals, have not yet been sufficiently explained. This pathology requires detailed study not only because of functional disorders of the liver and biliary system, but also because of the high probability of dangerous complications – fibrosis, cirrhosis, or hepatocellular carcinoma. The purpose of this study was to determine marker changes in the phospholipid composition of bile and blood in rats with experimental fatty hepatosis and with the use of corrective therapy. Hepatopathology was modelled in Wistar laboratory rats by intragastric administration of a 4% solution of tetracycline hydrochloride at the rate of 0.25 g/kg body weight for seven days. Using the method of thin-layer chromatography, the phospholipid components of animal bile and blood were studied. It was found that during experimental fatty hepatosis in rats, there was a decrease in the total phospholipid content in bile, mainly due to a decrease in the level of phosphatidylcholine (by 22.4-27.0%), the total fraction of inositol phosphatide and phosphatidylinositol (by 20.0-27.3%), and phosphatidylethanolamine (by 17.5-25.2%). Conversely, the introduction of milk phospholipids in the form of a dietary supplement “FLP-MD” in sick animals contributed to an increase in bile levels of phosphatidylserine by 67.1-99.8%, inositol phosphatide and phosphatidylinositol by 48.6-57.6%, phosphatidylcholine by 38.8-60.2%, phosphatidylethanolamine by 45.6-57.4%, and sphingomyelin by 30.4-46.3%. In the blood of such rats, a significant decrease in the content of phosphatidylcholine, phosphatidylserine, and sphingomyelin was found, which was not observed after administration of the “FLP-MD” dietary supplement to sick animals. In the case of using the supplement in healthy animals, only a 29.3% increase in the blood content of inositol phosphatide and phosphatidylinositol was noted. The determination of the most sensitive indicators in the phospholipid spectrum of blood and bile reveals the features of changes in molecular processes for the development of fatty hepatosis in animals, and also contributes to preclinical tests of the corrective effectiveness of newly created drugs according to established markers

Taurochenodeoxycholic acid reduces astrocytic neuroinflammation and alleviates experimental autoimmune encephalomyelitis in mice

ObjectiveMultiple sclerosis (MS) is an immune regulatory disease that affects the central nervous system (CNS). The main pathological features include demyelination and neurodegeneration, and the pathogenesis is associated with astrocytic neuroinflammation. Taurochenodeoxycholic acid (TCDCA) is one of the conjugated bile acids in animal bile, and it is not clear whether TCDCA could improve MS by inhibiting the activation of astrocytes. This study was aimed to evaluate the effects of TCDCA on experimental autoimmune encephalomyelitis (EAE)—a classical animal model of MS, and to probe its mechanism from the aspect of suppressing astrocytic neuroinflammation. It is expected to prompt the potential application of TCDCA for the treatment of MS. ResultsTCDCA effectively alleviated the progression of EAE and improved the impaired neurobehavior in mice. It mitigated the hyperactivation of astrocytes and down-regulated the mRNA expression levels of inducible nitric oxide synthase (iNOS), cyclooxygenase 2 (COX2), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and IL-6 in the brain cortex. In the C6 astrocytic cell line induced by lipopolysaccharide (LPS), TCDCA treatment dose-dependently decreased the production of NO and the protein expression of iNOS and glial fibrillary acidic protein (GFAP). TCDCA consistently inhibited the mRNA expressions of COX2, iNOS and other inflammatory mediators. Furthermore, TCDCA decreased the protein expression of phosphorylated serine/threonine kinase (AKT), inhibitor of NFκB α (IκBα) and nuclear factor κB (NFκB). And TCDCA also inhibited the nuclear translocation of NFκB. Conversely, as an inhibitor of the G-protein coupled bile acid receptor Gpbar1 (TGR5), triamterene eliminated the effects of TCDCA in LPS-stimulated C6 cells. ConclusionTCDCA improves the progress of EAE by inhibiting the astrocytic neuroinflammation, which might be exerted by the regulation of TGR5 mediated AKT/NFκB signaling pathway. These findings may prompt the potential application of TCDCA for MS therapy by suppressing astrocyte inflammation.

Building an explanatory model for snakebite envenoming care in the Brazilian Amazon from the indigenous caregivers' perspective.

In the Brazilian Amazon, snakebite envenomings (SBE) disproportionately affect indigenous peoples. Communication between indigenous and biomedical health sectors in regards to SBEs has never been explored in this region. This study aims to build an explanatory model (EM) of the indigenous healthcare domain for SBE patients from the perspective of the indigenous caregivers. This is a qualitative study involving in-depth interviews of eight indigenous caregivers who are representatives of the Tikuna, Kokama and Kambeba ethnic groups, in the Alto Solimões River, western Brazilian Amazon. Data analysis was carried out via deductive thematic analysis. A framework was built containing the explanations based on three explanatory model (EM) components: etiology, course of sickness, and treatment. To indigenous caregivers, snakes are enemies and present conscience and intention. Snakebites have a natural or a supernatural cause, the last being more difficult to prevent and treat. Use of ayahuasca tea is a strategy used by some caregivers to identify the underlying cause of the SBE. Severe or lethal SBEs are understood as having been triggered by sorcery. Treatment is characterized by four components: i) immediate self-care; ii) first care in the village, mostly including tobacco smoking, chants and prayers, combined with the intake of animal bile and emetic plants; iii) a stay in a hospital, to receive antivenom and other treatments; iv) care in the village after hospital discharge, which is a phase of re-establishment of well-being and reintroduction into social life, using tobacco smoking, massages and compresses to the affected limb, and teas of bitter plants. Dietary taboos and behavioral interdictions (avoiding contact with menstruating and pregnant women) prevent complications, relapses, and death, and must be performed up to three months after the snakebite. Caregivers are in favor of antivenom treatment in indigenous areas. There is a potential for articulation between different healthcare sectors to improve the management of SBEs in the Amazon region, and the aim is to decentralize antivenom treatment so that it occurs in indigenous health centers with the active participation of the indigenous caregivers.

Identification of the Authenticity and Geographical Origin of Bear Bile Powder by Using High Performance Liquid Chromatography - Charged Aerosol Detector Fingerprints Combined with Chemometrics.

Bear bile powder (BBP) is a rare animal-derived traditional Chinese medicine, and it has been widely used to treat visual disorders and hepatobiliary diseases in East Asia. However, there is still a lack of reliable quality control methods for BBP. This study was designed to establish a comprehensive quality map of BBP based on bile acids. High-performance liquid chromatography coupled with charged aerosol detector (HPLC-CAD) was used for fingerprint establishment and quantitative analysis of BBP. The similarities of HPLC-CAD chromatograms for 50 batches of BBP were more than 0.95, while the similarities of reference chromatograms between 6 other animal bile and BBP were low than 0.7. Additionally, five bile acids in BBP, including tauroursodeoxycholic acid, taurocholic acid, taurochenodeoxycholic acid, ursodesoxycholic acid, and chenodeoxycholic acid, were simultaneously quantified. This method has been validated with good regression as well as satisfactory precision, sensitivity, stability, repeatability, and accuracy. Using this method, the contents of five bile acids in BBP samples from five producing areas were determined and compared. Furthermore, Fisher linear discriminant analysis was performed to discriminate the geographic origins of BBP. The result demonstrated that HPLC-CAD fingerprint combined with multi-components quantification is an effective and reliable method for quality control of BBP, it could be a meaningful reference for the quality evaluation of medicinal bile.

Opisthorchis viverrini, Clonorchis sinensis and Opisthorchis felineus liver flukes affect mammalian host microbiome in a species-specific manner.

Opisthorchis felineus, Opisthorchis viverrini and Clonorchis sinensis are epidemiologically significant food-borne trematodes endemic to diverse climatic areas. O. viverrini and C. sinensis are both recognized to be 1A group of biological carcinogens to human, whereas O. felineus is not. The mechanisms of carcinogenesis by the liver flukes are studied fragmentarily, the role of host and parasite microbiome is an unexplored aspect. Specific pathogen free Mesocricetus auratus hamsters were infected with C. sinensis, O. viverrini and O. felineus. The microbiota of the adult worms, colon feces and bile from the hamsters was investigated using Illumina-based sequencing targeting the prokaryotic 16S rRNA gene. The analysis of 43 libraries revealed 18,830,015 sequences, the bacterial super-kingdom, 16 different phyla, 39 classes, 63 orders, 107 families, 187 genera-level phylotypes. O. viverrini, a fluke with the most pronounced carcinogenic potential, has the strongest impact on the host bile microbiome, changing the abundance of 92 features, including Bifidobacteriaceae, Erysipelotrichaceae, [Paraprevotellaceae], Acetobacteraceae, Coriobacteraceae and Corynebacteriaceae bacterial species. All three infections significantly increased Enterobacteriaceae abundance in host bile, reduced the level of commensal bacteria in the gut microbiome (Parabacteroides, Roseburia, and AF12). O. felineus, O. viverrini, and C. sinensis infections cause both general and species-specific qualitative and quantitative changes in the composition of microbiota of bile and colon feces of experimental animals infected with these trematodes. The alterations primarily concern the abundance of individual features and the phylogenetic diversity of microbiomes of infected hamsters.

FOLK MEDICINE FOR THE TREATMENT OF EYE DISEASES IN DALMATIA IN THE 19TH CENTURY

Folk medicine is a traditional medical practice in the general population, especially in rural areas. Traditional medicine methods used herbal remedies as well as human and animal substances and minerals. The most commonly used drugs in the treatment of eye diseases were drugs of plant origin like chamomile, eyebright and greater celandine, then drugs of human and animal origin like breast milk, saliva, honey, animal bile, and copper sulfate from mineral origin. There is little information in the literature discussing the folk treatment of ocular diseases. The aim of this paper is to show how ocular diseases were treated in folk medicine in Dalmatia during the 19th century. Efforts were also made to explain the reasons for such empirical treatment that was passed from generation to generation. At the end of the 19th, and especially at the beginning of the 20th century, modern and scientific ophthalmology developed in Dalmatia, but also throughout Croatia, first in large cities. So gradually, folk medicine in the treatment of eye diseases became more and more forgotten.

An integrated strategy combining metabolomics and machine learning for the evaluation of bioactive markers that differentiate various bile.

Animal bile is an important component of natural medicine and is widely used in clinical treatment. However, it is easy to cause mixed applications during processing, resulting in uneven quality, which seriously affects and harms the interests and health of consumers. Bile acids are the major bioactive constituents of bile and contain a variety of isomeric constituents. Although the components are structurally similar, they exhibit different pharmacological activities. Identifying the characteristics of each animal bile is particularly important for processing and reuse. It is necessary to establish an accurate analysis method to distinguish different types of animal bile. We evaluated the biological activity of key feature markers from various animal bile samples. In this study, a strategy combining metabolomics and machine learning was used to compare the bile of three different animals, and four key markers were screened. Quantitative analysis of the key markers showed that the levels of Glycochenodeoxycholic acid (GCDCA) and Taurodeoxycholic acid (TDCA) were highest in pig bile; Glycocholic acid (GCA) and Cholic acid (CA) were the most abundant in bovine and sheep bile, respectively. In addition, four key feature markers significantly inhibited the production of NO in LPS-stimulated RAW264.7 macrophage cells. These findings will contribute to the targeted development of bile in various animals and provide a basis for its rational application.

PROSPECTS AND POSSIBILITIES FOR PROCESSING ENDOCRINE-ENZYMED AND SPECIAL RAW MATERIALS

The article talks about a large number of unused resources in the field of medicine, where endocrine- enzyme and special raw materials of farm animals can be used for medicinal purposes, an analysis of technologies for processing bile of cattle is carried out. The fact that the bile of wild animals contains a wide range of biologically active substances has been known since ancient times. The development of pharmacology makes it possible to fully reveal all the beneficial properties of endocrine-enzyme and special raw materials for the development of various therapeutic drugs. The demand for cattle on the world market is very high. Therefore, one of the effective directions is the collection and processing of endocrine-enzyme and special raw materials for the production of medical and veterinary drugs. Currently, endocrine-enzyme and special raw materials are not processed in Kazakhstan. Therefore, this article discusses the main directions in the field of bile processing and processing of meat obtained during slaughter of cattle, ways to develop technologies for long-term preservation of product quality indicators that improve its quality. The most effective way of long-term storage is canning, i.e. the process of thickening. Depending on the age and sex of the animal, the bile can be thick or liquid. Therefore, the thickening process took place within 12-15 hours. Depending on this result, the optimal parameters of the thickening process were determined. In the course of the study, the physical, chemical and biological composition, microbiological pa- rameters of bile were determined, and storage periods were established. The article presents the results of the study of bile.

Chemical constituents and pharmacological action of bile acids from animal:a review

Bile of animal(mainly chicken, pig, snake, cow, and bear) has long been used as medicine. As the major active components of bile, bile acids mainly include cholic acid, deoxycholic acid, chenodeoxycholic acid, ursodeoxycholic acid, and taurochenodeoxycholic acid. They interact with intestinal microorganisms in enterohepatic circulation, thereby playing an important part in nutrient absorption and allocation, metabolism regulation, and dynamic balance. Bile acids have pharmacological effects such as protecting liver, kidney, heart, brain, and nerves, promoting bile secretion, dissolving gallstones, anti-cancer, relieving cough and dyspnea, dispelling phlegm, treating eye diseases, and regulating intestinal function and blood glucose, which are widely used in clinical practice. This study summarized and analyzed the research on the chemical constituents and pharmacological effects of bile acids from medicinal animals, in a bid to provide scientific basis and reference for the further development and utilization of bile acids.

Therapeutic Effects of Different Animal Bile Powders on Lipid Metabolism Disorders and Their Composition Analysis.

To compare the therapeutic effect of different animal bile powders on lipid metabolism disorders induced by high-fat diet in rats, and analyze the bioactive components of each animal bile powder. Sixty Sprague-Dawley rats were randomly divided into 6 groups (n=10): normal diet control group, high-fat diet model group, high-fat diet groups orally treated with bear, pig, cow and chicken bile powders, respectively. Serum biochemical markers from the abdominal aorta in each group were analyzed. Changes in the body weight and liver weight were recorded. Pathohistological changes in the livers were examined. High performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry was used to determine the composition of bioactive components in each animal bile powder. Treatment with different types of animal bile powders had different inhibitory effects on high-fat diet-induced increase of body weight and/or liver weight in rats, most notably in bear and pig bile powders (P<0.05). High-fat diet induced lipid metabolism disorder in rats, which could be reversed by treatment with all kinds of bile powders. Bear bile and chicken bile showed the most potent therapeutic effect against lipid metabolism disorder. Cow and bear bile effectively alleviated high-fat diet induced liver enlargement and discoloration, hepatocyte swelling, infiltration of inflammatory cells and formation of lipid vacuoles. Bioactive component analysis revealed that there were significant differences in the relative content of taurocholic acid, taurodeoxycholic acid and ursodeoxycholic acid among different types of animal bile. Interestingly, a unique component with molecular weight of 496.2738 Da, whose function has not yet been reported, was identified only in bear bile powder. Different animal bile powders had varying therapeutic effect against lipid metabolism disorders induced by high-fat diet, and bear bile powder demonstrated the most effective benefits. Bioactive compositions were different in different types of animal bile with a novel compound identified only in bear bile powder.

The bile acid composition analysis of the lipophilic complex of animal bile

Using gas chromatography, the qualitative composition and the quantitative content of bile acids in the lipophilic complexes of animal bile was studied. As a result of the studies, 6 steroids were identified in the lipophilic complexes of bile, 5 of which are bile acids. It was defined that cholic and deoxycholic acid predominate in all the studied objects, while their amount depends on the used raw materials.

Investigation of chemical profile of bile acids and determination of them in cultured Bovis Calculus with UPLC-QDA

In this study, 10 batches of samples of cultured Bovis Calculus(cow-bezoar) were determined for the investigation of chemical profile of bile acids with the UPLC-QDA method established. The results showed that nine common bile acids, cholic acid(CA), deoxycholic acid(DCA), chenodeoxycholic acid(CDCA), taurocholic acid(TCA), taurodeoxycholic acid(TDCA), taurochenodeoxycholic acid(TCDCA), glycocholic acid(GCA), glycodeoxycholic acid(GDCA) and glycochenodeoxycholic acid(GCDCA), were founded in samples and 7 bile acids were quantified except GDCA and GCDCA. In these samples, unconjugated bile acids, the major type of bile acids, accounted for more than 97% of all types of bile acids. As for unconjugated bile acids, CA was the most major bile acid in cultured cow-bezoar and it was about twice as much as DCA. The relative low-cost method established in the current study is accurate, rapid and sensitive, which is suitable for the studies of other drugs from animal bile.

Gut Microbes Take It to the Next Level? First Insights Into Farnesoid X Receptor Agonists of Microbial Origin.

The intestinal microbiome and its metabolites contribute to host (patho)physiology through signaling via host bile salt receptors(1) . To assess the overall chemical effects of the microbiome at the level of an entire animal, Quinn et al. conducted untargeted metabolome analysis of 29 different organs of germ-free and specific pathogen-free (SPF) mice. [Quinn RA, Melnik AV, Vrbanac A et al. Global chemical effects of the microbiome include new bile-acid conjugations. Nature 2020;579:123-129] Unique microbial and metabolome profiles were evident along the GI tract.

Identification and quantitation of bile acids in bear bile by HPLC

A method for simultaneous quantitation of tauroursodeoxycholic acid (TUDC), taurocholic acid (TC) and taurochenodeoxycholic acid (TCDC) using high performance liquid chromatography with a Vydac reversed phase C18 column is described. Peak area ratios versus concentration calibration curve for TUDC, TC and TCDC showed linearity over the range of 50-2000 μg/mL with correlation coefficient (r) of 0.9999, 0.9989 and 1.0000, respectively. Intraday and interday precisions range from 0.08 to 5.63% for TUDC, 0.28 to 6.70% for TC and 0.14 to 4.82% for TCDC. Quantitative HPLC analysis was performed on 93 Ursidae bile salts. Average concentrations were 3087 μg/mL for TUDC, 212.6 μg/mL for TC and 1968 μg/mL for TCDC. Our data suggests that North American and polar bears contain a higher concentration of TC (relative to TUDC and TCDC), while the relative concentration of TC in Asiatic bears (wild or farmed) is much lower. Analytical results of 217 gall bladder (11 cases) items submitted as criminal evidence from customs officials indicate: 147 (67.74%) were of domestic pig origin; 42 (19.36%) were from Asiatic bears, 14 (6.45%) were from goat gall bladders and 14 (6.45%) were absent of animal bile.

Decrease in Efficacy of Warfarin as a Result of Drug-Drug Interaction (Case Report)

The one of the main aims in modern clinical pharmacology is to provide safe and effective therapy considering a frequent administration of several drugs having different drug-drug interactions. Warfarin belongs to the number of popular anticoagulants which along with its efficiency not infrequently alters anticoagulant characteristics when administered with other drugs and food products. A case of a decrease in the efficacy of warfarin in a patient with mitral stenosis while taking a combined choleretic drug is presented in the article. The components of this choleretic drug (dry animal bile, dry garlic extract, dry nettle extract, activated charcoal) could impair the absorption of warfarin, increase intestinal absorption of vitamin K, and have a negative effect on the anticoagulant effect of warfarin. Management of patients receiving anticoagulants should be performed in accordance with clinical recommendations. Prescription of drugs, including multicomponent ones, without proven efficacy, for such patients should be considering the potential drug interaction.