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He Y, Wu F, Tan Z, Zhang M, Li T, Zhang A, Miao J, Ou M, Long L, Sun H, Wang X. Quality Markers’ Discovery and Quality Evaluation of Jigucao Capsule Using UPLC-MS/MS Method. Molecules 2023; 28:molecules28062494. [PMID: 36985466 PMCID: PMC10058756 DOI: 10.3390/molecules28062494] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/01/2023] [Accepted: 03/05/2023] [Indexed: 03/11/2023] Open
Abstract
Jigucao capsules (JGCC) have the effects of soothing the liver and gallbladder and clearing heat and detoxification. It is a good medicine for treating acute and chronic hepatitis cholecystitis with damp heat of the liver and gallbladder. However, the existing quality standard of JGCC does not have content determination items, which is not conducive to quality control. In this study, serum pharmacochemistry technology and UNIFI data processing software were used to identify the blood prototype components and metabolites under the condition of the obvious drug effects of JGCC, and the referenced literature reports and the results from in vitro analysis of JGCC in the early stage revealed a total of 43 prototype blood components and 33 metabolites in JGCC. Quality markers (Q-markers) were discovered, such as abrine, trigonelline, hypaphorine and isoschaftoside. In addition, ultra-high-performance liquid chromatography–triple quadrupole mass spectrometry (UPLC-QQQ-MS) was used to determine the active ingredients in JGCC. The components of quantitative analysis have good correlation in the linear range with R2 ≥ 0.9993. The recovery rate is 93.15%~108.92% and the relative standard deviation (RSD) is less than 9.48%. The established UPLC-MS/MS quantitative analysis method has high sensitivity and accuracy, and can be used for the quality evaluation of JGCC.
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Affiliation(s)
- Yanmei He
- National Chinmedomics Research Center, National TCM Key Laboratory of Serum Pharmacochemistry, Chinmedomics Research Center of State Administration of TCM, Laboratory of Metabolomics, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Harbin 150036, China
- National Engineering Laboratory for the Development of Southwestern Endangered Medicinal Materials, Guangxi Botanical Garden of Medicinal Plants, Nanning 500023, China
| | - Fangfang Wu
- National Engineering Laboratory for the Development of Southwestern Endangered Medicinal Materials, Guangxi Botanical Garden of Medicinal Plants, Nanning 500023, China
| | - Zhien Tan
- National Engineering Laboratory for the Development of Southwestern Endangered Medicinal Materials, Guangxi Botanical Garden of Medicinal Plants, Nanning 500023, China
| | - Mengli Zhang
- National Engineering Laboratory for the Development of Southwestern Endangered Medicinal Materials, Guangxi Botanical Garden of Medicinal Plants, Nanning 500023, China
| | - Taiping Li
- National Chinmedomics Research Center, National TCM Key Laboratory of Serum Pharmacochemistry, Chinmedomics Research Center of State Administration of TCM, Laboratory of Metabolomics, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Harbin 150036, China
| | - Aihua Zhang
- National Chinmedomics Research Center, National TCM Key Laboratory of Serum Pharmacochemistry, Chinmedomics Research Center of State Administration of TCM, Laboratory of Metabolomics, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Harbin 150036, China
| | - Jianhua Miao
- National Engineering Laboratory for the Development of Southwestern Endangered Medicinal Materials, Guangxi Botanical Garden of Medicinal Plants, Nanning 500023, China
| | - Min Ou
- National Engineering Laboratory for the Development of Southwestern Endangered Medicinal Materials, Guangxi Botanical Garden of Medicinal Plants, Nanning 500023, China
| | - Lihuo Long
- National Engineering Laboratory for the Development of Southwestern Endangered Medicinal Materials, Guangxi Botanical Garden of Medicinal Plants, Nanning 500023, China
| | - Hui Sun
- National Chinmedomics Research Center, National TCM Key Laboratory of Serum Pharmacochemistry, Chinmedomics Research Center of State Administration of TCM, Laboratory of Metabolomics, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Harbin 150036, China
- Correspondence: (H.S.); (X.W.); Tel./Fax: +86-451-8211-0818 (X.W.)
| | - Xijun Wang
- National Chinmedomics Research Center, National TCM Key Laboratory of Serum Pharmacochemistry, Chinmedomics Research Center of State Administration of TCM, Laboratory of Metabolomics, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Harbin 150036, China
- National Engineering Laboratory for the Development of Southwestern Endangered Medicinal Materials, Guangxi Botanical Garden of Medicinal Plants, Nanning 500023, China
- Correspondence: (H.S.); (X.W.); Tel./Fax: +86-451-8211-0818 (X.W.)
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Kastrinou Lampou V, Poller B, Huth F, Fischer A, Kullak-Ublick GA, Arand M, Schadt HS, Camenisch G. Novel insights into bile acid detoxification via CYP, UGT and SULT enzymes. Toxicol In Vitro 2023; 87:105533. [PMID: 36473578 DOI: 10.1016/j.tiv.2022.105533] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 10/28/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
Bile acid (BA) homeostasis is a complex and precisely regulated process to prevent impaired BA flow and the development of cholestasis. Several reactions, namely hydroxylation, glucuronidation and sulfation are involved in BA detoxification. In the present study, we employed a comprehensive approach to identify the key enzymes involved in BA metabolism using human recombinant enzymes, human liver microsomes (HLM) and human liver cytosol (HLC). We showed that CYP3A4 was a crucial step for the metabolism of several BAs and their taurine and glycine conjugated forms and quantitatively described their metabolites. Glucuronidation and sulfation were also identified as important drivers of the BA detoxification process in humans. Moreover, lithocholic acid (LCA), the most hydrophobic BA with the highest toxicity potential, was a substrate for all investigated processes, demonstrating the importance of hepatic metabolism for its clearance. Collectively, this study identified CYP3A4, UGT1A3, UGT2B7 and SULT2A1 as the major contributing (metabolic) processes in the BA detoxification network. Inhibition of these enzymes by drug candidates is therefore considered as a critical mechanism in the manifestation of drug-induced cholestasis in humans and should be addressed during the pre-clinical development.
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Affiliation(s)
- Vlasia Kastrinou Lampou
- Department of Pharmacokinetic Sciences, Novartis Institutes for BioMedical Research, Basel, Switzerland; Department of Preclinical Safety, Novartis Institutes for BioMedical Research, Basel, Switzerland; Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Birk Poller
- Department of Pharmacokinetic Sciences, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Felix Huth
- Department of Pharmacokinetic Sciences, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Audrey Fischer
- Department of Preclinical Safety, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Gerd A Kullak-Ublick
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, University of Zurich, Zurich, Switzerland; Mechanistic Safety, CMO & Patient Safety, Global Drug Development, Novartis, Basel, Switzerland
| | - Michael Arand
- Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland
| | - Heiko S Schadt
- Department of Preclinical Safety, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Gian Camenisch
- Department of Pharmacokinetic Sciences, Novartis Institutes for BioMedical Research, Basel, Switzerland.
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Ikeda Y, Morita SY, Hatano R, Tsuji T, Terada T. Enhancing effect of taurohyodeoxycholate on ABCB4-mediated phospholipid efflux. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:1495-1502. [PMID: 31176036 DOI: 10.1016/j.bbalip.2019.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/30/2019] [Accepted: 06/01/2019] [Indexed: 11/27/2022]
Abstract
Hydrophilic bile salts, ursodeoxycholate and hyodeoxycholate, have choleretic effects. ABCB4, a member of the ABC transporter family, is essential for the secretion of phospholipids from hepatocytes into bile. In this study, we assessed the effects of taurine- or glycine-conjugated cholate, ursodeoxycholate and hyodeoxycholate on the ABCB4-mediated phosphatidylcholine (PC) efflux using Abcb4 knockout mice and HEK293 cells stably expressing ABCB4. To evaluate the effects of bile salts on bile formation in Abcb4+/+ or Abcb4-/- mice, the bile was collected during intravenous infusion of saline or bile salts. The biliary PC secretion in Abcb4+/+ mice was significantly increased by the infusions of all tested bile salts, especially taurohyodeoxycholate. On the other hand, Abcb4-/- mice exhibited extremely low secretion of PC into bile, which was not altered by bile salt infusions. We also showed that the PC efflux from ABCB4-expressing HEK293 cells was stimulated by taurohyodeoxycholate much more strongly than the other tested bile salts. However, taurohyodeoxycholate did not restore the activities of ABCB4 mutants. Furthermore, light scattering measurements demonstrated a remarkable ability of taurohyodeoxycholate to form mixed micelles with PC. Therefore, the enhancing effect of taurohyodeoxycholate on the ABCB4-mediated PC efflux may be due to the strong mixed micelle formation ability.
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Affiliation(s)
- Yoshito Ikeda
- Department of Pharmacy, Shiga University of Medical Science Hospital, Otsu City, Shiga 520-2192, Japan
| | - Shin-Ya Morita
- Department of Pharmacy, Shiga University of Medical Science Hospital, Otsu City, Shiga 520-2192, Japan.
| | - Ryo Hatano
- Department of Medical Physiology, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba 260-8670, Japan
| | - Tokuji Tsuji
- Department of Pharmacy, Shiga University of Medical Science Hospital, Otsu City, Shiga 520-2192, Japan
| | - Tomohiro Terada
- Department of Pharmacy, Shiga University of Medical Science Hospital, Otsu City, Shiga 520-2192, Japan
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Stević S, Mikov M, Stanojević-Ristić Z, Rašić J, Vitković L. Concentrations of sodium 3α, 7α--dihydroxy-12-oxo 5β cholanate in biological material after its intravenous and intranasal application. PRAXIS MEDICA 2018. [DOI: 10.5937/pramed1802075s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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Ghaffarzadegan T, Marungruang N, Fåk F, Nyman M. Molecular Properties of Guar Gum and Pectin Modify Cecal Bile Acids, Microbiota, and Plasma Lipopolysaccharide-Binding Protein in Rats. PLoS One 2016; 11:e0157427. [PMID: 27315087 PMCID: PMC4912110 DOI: 10.1371/journal.pone.0157427] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 05/31/2016] [Indexed: 01/12/2023] Open
Abstract
Bile acids (BAs) act as signaling molecules in various physiological processes, and are related to colonic microbiota composition as well as to different types of dietary fat and fiber. This study investigated whether guar gum and pectin—two fibers with distinct functional characteristics—affect BA profiles, microbiota composition, and gut metabolites in rats. Low- (LM) or high-methoxylated (HM) pectin, and low-, medium-, or high-molecular-weight (MW) guar gum were administered to rats that were fed either low- or high-fat diets. Cecal BAs, short-chain fatty acids (SCFA) and microbiota composition, and plasma lipopolysaccharide-binding protein (LBP) levels were analyzed, by using novel methodologies based on gas chromatography (BAs and SCFAs) and 16S rRNA gene sequencing on the Illumina MiSeq platform. Strong correlations were observed between cecal BA and SCFA levels, microbiota composition, and portal plasma LBP levels in rats on a high-fat diet. Notably, guar gum consumption with medium-MW increased the cecal amounts of cholic-, chenodeoxycholic-, and ursodeoxycholic acids as well as α-, β-, and ω-muricholic acids to a greater extent than other types of guar gum or the fiber-free control diet. In contrast, the amounts of cecal deoxycholic- and hyodeoxycholic acid were reduced with all types of guar gum independent of chain length. Differences in BA composition between pectin groups were less obvious, but cecal levels of α- and ω-muricholic acids were higher in rats fed LM as compared to HM pectin or the control diet. The inflammatory marker LBP was downregulated in rats fed medium-MW guar gum and HM pectin; these two fibers decreased the cecal abundance of Oscillospira and an unclassified genus in Ruminococcaceae, and increased that of an unclassified family in RF32. These results indicate that the molecular properties of guar gum and pectin are important for their ability to modulate cecal BA formation, gut microbiota composition, and high-fat diet induced inflammation.
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Affiliation(s)
| | | | - Frida Fåk
- Food for Health Science Centre, Lund University, Lund, Sweden
| | - Margareta Nyman
- Food for Health Science Centre, Lund University, Lund, Sweden
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Agarwal DS, Anantaraju HS, Sriram D, Yogeeswari P, Nanjegowda SH, Mallu P, Sakhuja R. Synthesis, characterization and biological evaluation of bile acid-aromatic/heteroaromatic amides linked via amino acids as anti-cancer agents. Steroids 2016; 107:87-97. [PMID: 26748355 DOI: 10.1016/j.steroids.2015.12.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 12/01/2015] [Accepted: 12/30/2015] [Indexed: 12/19/2022]
Abstract
A series of bile acid (Cholic acid and Deoxycholic acid) aryl/heteroaryl amides linked via α-amino acid were synthesized and tested against 3 human cancer cell-lines (HT29, MDAMB231, U87MG) and 1 human normal cell line (HEK293T). Some of the conjugates showed promising results to be new anticancer agents with good in vitro results. More specifically, Cholic acid derivatives 6a (1.35 μM), 6c (1.41 μM) and 6m (4.52 μM) possessing phenyl, benzothiazole and 4-methylphenyl groups showed fairly good activity against the breast cancer cell line with respect to Cisplatin (7.21 μM) and comparable with respect to Doxorubicin (1 μM), while 6e (2.49μM), 6i (2.46 μM) and 6m (1.62 μM) showed better activity against glioblastoma cancer cell line with respect to both Cisplatin (2.60 μM) and Doxorubicin (3.78 μM) drugs used as standards. Greater than 65% of the compounds were found to be safer on human normal cell line.
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Affiliation(s)
- Devesh S Agarwal
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India
| | - Hasitha Shilpa Anantaraju
- Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Dharmarajan Sriram
- Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Perumal Yogeeswari
- Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Shankara H Nanjegowda
- Department of Chemistry, Sri Jayachamarajendra College of Engineering, Mysore 570006, India
| | - P Mallu
- Department of Chemistry, Sri Jayachamarajendra College of Engineering, Mysore 570006, India
| | - Rajeev Sakhuja
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
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Salvador JAR, Carvalho JFS, Neves MAC, Silvestre SM, Leitão AJ, Silva MMC, Sá e Melo ML. Anticancer steroids: linking natural and semi-synthetic compounds. Nat Prod Rep 2013; 30:324-74. [PMID: 23151898 DOI: 10.1039/c2np20082a] [Citation(s) in RCA: 197] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Steroids, a widespread class of natural organic compounds occurring in animals, plants and fungi, have shown great therapeutic value for a broad array of pathologies. The present overview is focused on the anticancer activity of steroids, which is very representative of a rich structural molecular diversity and ability to interact with various biological targets and pathways. This review encompasses the most relevant discoveries on steroid anticancer drugs and leads through the last decade and comprises 668 references.
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Affiliation(s)
- Jorge A R Salvador
- Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Coimbra, Polo das Ciências da Saúde, 3000-508, Coimbra, Portugal.
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Yang L, Zhang H, Mikov M, Tucker IG. Physicochemical and Biological Characterization of Monoketocholic Acid, a Novel Permeability Enhancer. Mol Pharm 2009; 6:448-56. [DOI: 10.1021/mp800143w] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lin Yang
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | - Hu Zhang
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | - Momir Mikov
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | - Ian G. Tucker
- School of Pharmacy, University of Otago, Dunedin, New Zealand
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Powell AA, Akare S, Qi W, Herzer P, Jean-Louis S, Feldman RA, Martinez JD. Resistance to ursodeoxycholic acid-induced growth arrest can also result in resistance to deoxycholic acid-induced apoptosis and increased tumorgenicity. BMC Cancer 2006; 6:219. [PMID: 16948850 PMCID: PMC1574338 DOI: 10.1186/1471-2407-6-219] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2006] [Accepted: 09/01/2006] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND There is a large body of evidence which suggests that bile acids increase the risk of colon cancer and act as tumor promoters, however, the mechanism(s) of bile acids mediated tumorigenesis is not clear. Previously we showed that deoxycholic acid (DCA), a tumorogenic bile acid, and ursodeoxycholic acid (UDCA), a putative chemopreventive agent, exhibited distinct biological effects, yet appeared to act on some of the same signaling molecules. The present study was carried out to determine whether there is overlap in signaling pathways activated by tumorogenic bile acid DCA and chemopreventive bile acid UDCA. METHODS To determine whether there was an overlap in activation of signaling pathways by DCA and UDCA, we mutagenized HCT116 cells and then isolated cell lines resistant to UDCA induced growth arrest. These lines were then tested for their response to DCA induced apoptosis. RESULTS We found that a majority of the cell lines resistant to UDCA-induced growth arrest were also resistant to DCA-induced apoptosis, implying an overlap in DCA and UDCA mediated signaling. Moreover, the cell lines which were the most resistant to DCA-induced apoptosis also exhibited a greater capacity for anchorage independent growth. CONCLUSION We conclude that UDCA and DCA have overlapping signaling activities and that disregulation of these pathways can lead to a more advanced neoplastic phenotype.
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Affiliation(s)
- Ashley A Powell
- Cancer Biology Interdisciplinary Program, University of Arizona, Arizona Cancer Center, Tucson, AZ, 85724, USA
- Department of Surgery, Stanford University, MSLS P229, 1201 Welch Road, Stanford, CA 94305, USA
| | - Sandeep Akare
- Department of Cell Biology and Anatomy, University of Arizona, Arizona Cancer Center, Tucson, AZ, 85724, USA
- Department of Pathobiology, College of Veterinary Medicine University of Illinois Urbana Champagne, 2001 South Lincoln Avenue, Urbana, IL 61802, USA
| | - Wenqing Qi
- Department of Cell Biology and Anatomy, University of Arizona, Arizona Cancer Center, Tucson, AZ, 85724, USA
- Department of Medicine, University of Arizona, Arizona Cancer Center, Tucson, AZ, 85724, USA
| | - Pascal Herzer
- Applied Biosciences Program, University of Arizona, Tucson, AZ 85724, USA
- The Scripps Research Institute, Office of Technology Development, 10550 N. Torrey Pines Rd., La Jolla, CA 92037, USA
| | - Samira Jean-Louis
- Cancer Biology Interdisciplinary Program, University of Arizona, Arizona Cancer Center, Tucson, AZ, 85724, USA
- Department of Nutritional Sciences, University of Arizona, Tucson AZ 85724, USA
| | - Rebecca A Feldman
- Cancer Biology Interdisciplinary Program, University of Arizona, Arizona Cancer Center, Tucson, AZ, 85724, USA
| | - Jesse D Martinez
- Department of Cell Biology and Anatomy, University of Arizona, Arizona Cancer Center, Tucson, AZ, 85724, USA
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Portincasa P, Moschetta A, Petruzzelli M, Vacca M, Krawczyk M, Minerva F, Palmieri VO, Palasciano G. The "hemolysis model" for the study of cyto-toxicity and cyto-protection by bile salts and phospholipids. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2006; 578:93-9. [PMID: 16927676 DOI: 10.1007/0-387-29540-2_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Affiliation(s)
- Piero Portincasa
- Clinica Medica A. Murri, Department of Internal & Public Medicine, University Medical School, Piazza G. Cesare 11, 70124 Bari, Italy
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11
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Ricchi M, Bertolotti M, Anzivino C, Carulli L, Canedi I, Bormioli ML, Tiozzo R, Croce MA, Lonardo A, Carulli N, Loria P. 17 Beta-estradiol prevents cytotoxicity from hydrophobic bile acids in HepG2 and WRL-68 cell cultures. J Gastroenterol Hepatol 2006; 21:894-901. [PMID: 16704542 DOI: 10.1111/j.1440-1746.2006.04144.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND Epidemiological and clinical studies suggest the possibility that estrogens might have a cytoprotective effect on the liver. The aim of the present study was to test the hypothesis that 17beta-estradiol (E2) prevents hepatocellular damage induced by deoxycholic acid (DCA), a hydrophobic bile acid. METHODS HepG2 cells were exposed for 24 h to DCA (350 micromol/L). Cell viability, aspartate aminotransferase and lactate dehydrogenase activity and apoptosis were measured as indices of cell toxicity. The effect of DCA was compared to that observed using either a hydrophilic bile acid, ursodeoxycholic acid (UDCA; 100 micromol/L), or E2 at different concentrations (1 nmol/L, 10 nmol/L, 50 nmol/L and 50 micromol/L) or mixtures of E2/DCA or UDCA/DCA. The same experiments were performed using WRL-68 cells that, at variance with HepG2, express a higher level of nuclear estrogen receptor. RESULTS High concentrations of E2 and UDCA prevented DCA-induced decrease in cell viability, increase in enzyme activity and apoptosis evaluated both by 4',6-diamidino-2-phenylindole dihydrochloride (DAPI) and TdT-mediated dUTP nick-end labeling (TUNEL) assays. In addition, DCA-related apoptosis, assessed by caspase activity, was also prevented by E2 (P < 0.01) in physiological (1-10 nmol/L) doses. The cytoprotective effects of E2 and UDCA was also observed in the WRL-68 cell line. CONCLUSIONS 17Beta-Estradiol prevents DCA-induced cell damage in HepG2 and WRL-68 cell lines to an extent comparable to UDCA. The hypothesis that the protective effect of E2 may be mediated by a mechanism that is nuclear estrogen receptor independent, deserves further verification.
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Affiliation(s)
- Matteo Ricchi
- Department of Internal Medicine, University of Modena and Reggio Emilia, Modena, Italy
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Im E, Akare S, Powell A, Martinez JD. Ursodeoxycholic Acid Can Suppress Deoxycholic Acid-Induced Apoptosis by Stimulating Akt/PKB-Dependent Survival Signaling. Nutr Cancer 2005; 51:110-6. [PMID: 15749637 DOI: 10.1207/s15327914nc5101_15] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The nontoxic bile acid ursodeoxycholic acid (UDCA) is reported to be an anti-apoptotic agent with efficacy against a variety of death stimuli including the cytotoxic bile acid deoxycholic acid (DCA). To gain insight into this anti-apoptotic property, we tested UDCA for its ability to protect the colon carcinoma-derived cell line HCT116 against DCA-induced apoptosis. We found that UDCA could suppress DCA-induced apoptosis in a time- and dose-dependent manner and that this effect correlated with Akt phosphorylation. Importantly, UDCA lost its ability to protect cells from DCA-induced cell death when Akt activity was suppressed genetically using a dominant negative Akt mutant or when PI3K activity was inhibited pharmacologically. These results suggest that UDCA can protect HCT116 cells against DCA-induced apoptosis by stimulating Akt-dependent survival signaling.
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Affiliation(s)
- Eunok Im
- Arizona Cancer Center, Department of Cell Biology and Anatomy, University of Arizona, Tucson, Arizona 85724, USA
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Affiliation(s)
- M E Guicciardi
- Division of Gastroenterology and Hepatology, Mayo Medical School, Clinic, and Foundation, Rochester, MN 55905, USA.
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