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Elmahallawy EK, Fehaid A, EL-shewehy DMM, Ramez AM, Alkhaldi AAM, Mady R, Nasr NE, Arafat N, Hassanen EAA, Alsharif KF, Abdo W. S-Methylcysteine Ameliorates the Intestinal Damage Induced by Eimeria tenella Infection via Targeting Oxidative Stress and Inflammatory Modulators. Front Vet Sci 2022; 8:754991. [PMID: 35071376 PMCID: PMC8767015 DOI: 10.3389/fvets.2021.754991] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 11/16/2021] [Indexed: 11/17/2022] Open
Abstract
Avian coccidiosis is one of the major parasitic diseases in the poultry industry. The infection is caused by Eimeria species, and its treatment relies mainly on the administration of anticoccidial drugs, which can result in drug resistance and side effects. The recent trends in avian coccidiosis treatment is directed to the development of a new therapy using herbal compounds. S-Methylcysteine (SMC) is considered one of the organosulfur compounds in garlic that showed promising activity in the treatment of different pathological conditions via a wide range of anti-inflammatory and antioxidant mechanisms. In this study, the anticoccidial activity of SMC was investigated in Eimeria tenella-infected chickens compared to diclazuril as a widely used anticoccidial drug. In this regard, 14-day-old broilers were divided into six groups (n = 18). The first group (G1) was the healthy control group, while the second group (G2) was the non-infected SMC group treated at a dose of 50 mg/kg b.w. (high dose). Moreover, the third group (G3) was the positive control group (infected and non-treated). The fourth group (G4) was the infected group treated with SMC of 25 mg/kg b.w. (low dose), while the fifth group (G5) was the infected group treated with SMC of 50 mg/kg b.w. (high dose). Conversely, the sixth group (G6) was the diclazuril-treated group. The anticoccidial effects of SMC and diclazuril were evaluated by counting oocysts and recording the body weight gain, feed conversion ratio, clinical signs, lesions, and mortality rate. Interestingly, SMC showed potent anticoccidial activity, which was exemplified by reduction of oocyst count. Furthermore, the biochemical, antioxidant, and anti-inflammatory parameters in the cecal tissues were restored toward their control levels in G4, G5, and G6. Histopathological observation of cecal tissues was consistent with the aforementioned results revealing the ameliorative effect of SMC against E. tenella infection. This study concluded novel findings in relation to the anticoccidial role of SMC as a plant-based compound against the E. tenella-induced coccidiosis in broiler chickens combined with its antioxidative and anti-inflammatory properties. Further studies for exploring the mechanistic pathways involved in this activity and the potential benefits from its use in association with conventional anticoccidial drugs are warranted.
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Affiliation(s)
- Ehab Kotb Elmahallawy
- Department of Zoonoses, Faculty of Veterinary Medicine, Sohag University, Sohag, Egypt
| | - Alaa Fehaid
- Forensic Medicine and Toxicology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | | | - Amany M. Ramez
- Zoology Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | | | - Rehab Mady
- Department of Pharmacology, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
| | - Nasr Elsayed Nasr
- Biochemistry and Clinical Biochemistry, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr El-Sheikh, Egypt
| | - Nagah Arafat
- Department of Poultry Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Eman A. A. Hassanen
- Department of Parasitology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Khalaf F. Alsharif
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Walied Abdo
- Department of Pathology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr El-Sheikh, Egypt
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Xiao X, Hu Q, Deng X, Shi K, Zhang W, Jiang Y, Ma X, Zeng J, Wang X. Old wine in new bottles: Kaempferol is a promising agent for treating the trilogy of liver diseases. Pharmacol Res 2021; 175:106005. [PMID: 34843960 DOI: 10.1016/j.phrs.2021.106005] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 02/07/2023]
Abstract
As a source of various compounds, natural products have long been important and valuable for drug development. Kaempferol (KP) is the most common flavonol with bioactive activity and has been extracted from many edible plants and traditional Chinese medicines. It has a wide range of pharmacological effects on inflammation, oxidation, and tumour and virus regulation. The liver is an important organ and is involved in metabolism and activity. Because the pathological process of liver diseases is extremely complicated, liver diseases involving ALD, NASH, liver fibrosis, and HCC are often complicated and difficult to treat. Fortunately, there have been many reports that KP has a good pharmacological effect on a series of complex liver diseases. To fully understand the mechanism of KP and provide new ideas for its clinical application in the treatment of liver diseases, this article reviews the pharmacological mechanism and potential value of KP in different studies involving various liver diseases. In the trilogy of liver disease, high concentrations of ROS stimulate peroxidation and activate the inflammatory signal cascade, which involves signalling pathways such as MAPK/JAK-STAT/PERK/Wnt/Hipp, leading to varying degrees of cell degradation and liver damage. The development of liver disease is promoted in an inflammatory environment, which is conducive to the activation of TGF-β1, leading to increased expression of pro-fibrosis and pro-inflammatory genes. Inflammation and oxidative stress promote the formation of tumour microenvironments, and uncontrolled autophagy of cancer cells further leads to the development of liver cancer. The main pathway in this process is AMPK/PTEN/PI3K-Akt/TOR. KP can not only protect liver parenchymal cells through a variety of antioxidant and anti-apoptotic mechanisms but also reduces the immune inflammatory response in the liver microenvironment, thereby preventing cell apoptosis; it can also inhibit the ER stress response, prevent inflammation and inhibit tumour growth. KP exerts multiple therapeutic effects on liver disease by regulating precise signalling targets and is expected to become an emerging therapeutic opportunity to treat liver disease in the future.
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Affiliation(s)
- Xiaolin Xiao
- Hospital of Chengdu University of Traditional Chinese Medicine, School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Qichao Hu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xinyu Deng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Kaiyun Shi
- Hospital of Chengdu University of Traditional Chinese Medicine, School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Wenwen Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Yinxiao Jiang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xiao Ma
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Jinhao Zeng
- Hospital of Chengdu University of Traditional Chinese Medicine, School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Xiaoyin Wang
- Hospital of Chengdu University of Traditional Chinese Medicine, School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
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Alarcón-Sánchez BR, Pérez-Carreón JI, Villa-Treviño S, Arellanes-Robledo J. Molecular alterations that precede the establishment of the hallmarks of cancer: An approach on the prevention of hepatocarcinogenesis. Biochem Pharmacol 2021; 194:114818. [PMID: 34757033 DOI: 10.1016/j.bcp.2021.114818] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/25/2021] [Accepted: 10/27/2021] [Indexed: 02/07/2023]
Abstract
Chronic liver injury promotes the molecular alterations that precede the establishment of cancer. Usually, several decades of chronic insults are needed to develop the most common primary liver tumor known as hepatocellular carcinoma. As other cancer types, liver cancer cells are governed by a common set of rules collectively called the hallmarks of cancer. Although those rules have provided a conceptual framework for understanding the complex pathophysiology of established tumors, therapeutic options are still ineffective in advanced stages. Thus, the molecular alterations that precede the establishment of cancer remain an attractive target for therapeutic interventions. Here, we first summarize the chemopreventive interventions targeting the early liver carcinogenesis stages. After an integrative analysis on the plethora of molecular alterations regulated by anticancer agents, we then underline and discuss that two critical processes namely oxidative stress and genetic alterations, play the role of 'dirty work laborer' in the initial cell damage and drive the transformation of preneoplastic into neoplastic cells, respectively; besides, the activation of cellular senescence works as a key mechanism in attempting to prevent the onset and establishment of liver cancer. Whereas the detrimental effects of the binomial made up of oxidative stress and genetic alterations are either eliminated or reduced, senescence activation is promoted by anticancer agents. We argue that collectively, oxidative stress, genetic alterations, and senescence are key events that influence the fate of initiated cells and the establishment of the hallmarks of cancer.
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Affiliation(s)
- Brisa Rodope Alarcón-Sánchez
- Laboratory of Liver Diseases, National Institute of Genomic Medicine - INMEGEN, CDMX, Mexico; Departament of Cell Biology, Center for Research and Advanced Studies of the National Polytechnic Institute - CINVESTAV-IPN, CDMX, Mexico
| | | | - Saúl Villa-Treviño
- Departament of Cell Biology, Center for Research and Advanced Studies of the National Polytechnic Institute - CINVESTAV-IPN, CDMX, Mexico
| | - Jaime Arellanes-Robledo
- Laboratory of Liver Diseases, National Institute of Genomic Medicine - INMEGEN, CDMX, Mexico; Directorate of Cátedras, National Council of Science and Technology - CONACYT, CDMX, Mexico.
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Zarei I, Baxter BA, Oppel RC, Borresen EC, Brown RJ, Ryan EP. Plasma and Urine Metabolite Profiles Impacted by Increased Dietary Navy Bean Intake in Colorectal Cancer Survivors: A Randomized-Controlled Trial. Cancer Prev Res (Phila) 2020; 14:497-508. [PMID: 33361317 DOI: 10.1158/1940-6207.capr-20-0270] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/28/2020] [Accepted: 12/21/2020] [Indexed: 11/16/2022]
Abstract
Navy beans contain bioactive phytochemicals with colon cancer prevention properties as demonstrated in carcinogen-induced animal models. Human studies support that dietary navy bean intake modulates metabolism by the gut microbiome. This study investigated the effect of navy bean ingestion on plasma and urine metabolite profiles of overweight and obese colorectal cancer survivors. Twenty participants completed a single-blinded, randomized-controlled dietary intervention with precooked navy beans (35 g bean powder/day) or control (0 g/day) for 4 weeks. Plasma and urine were collected at baseline, 2 weeks, and 4 weeks following consumption. Nontargeted metabolomics was applied to study meals and snacks, navy beans, plasma, and urine. Increased navy bean consumption was hypothesized to (i) delineate dietary biomarkers and (ii) promote metabolic shifts relevant for cancer protection in the plasma and urine metabolome. At 4 weeks, 16 plasma and 16 urine metabolites were significantly different in the navy bean intervention group compared with placebo control (P < 0.05). Increased plasma 2,3-dihydroxy-2-methylbutyrate (1.34-fold), S-methylcysteine (1.92-fold), and pipecolate (3.89-fold), and urine S-adenosylhomocysteine (2.09-fold) and cysteine (1.60-fold) represent metabolites with cancer-protective actions following navy bean consumption. Diet-derived metabolites were detected in plasma or urine and confirmed for presence in the navy bean intervention meals and snacks. These included 3-(4-hydroxyphenyl)propionate, betaine, pipecolate, S-methylcysteine, choline, eicosapentaenoate (20:5n3), benzoate, S-adenosylhomocysteine, N-delta-acetylornithine, cysteine, 3-(4-hydroxyphenyl)lactate, gentisate, hippurate, 4-hydroxyhippurate, and salicylate. The navy bean dietary intervention for 4 weeks showed changes to pathways of metabolic importance to colorectal cancer prevention and merit continued attention for dietary modulation in future high-risk cohort investigations. PREVENTION RELEVANCE: This clinical study suggests that increased consumption of navy beans would deliver bioactive metabolites to individuals at high risk for colorectal cancer recurrence and produce metabolic shifts in plasma and urine profiles.
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Affiliation(s)
- Iman Zarei
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Bridget A Baxter
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Renee C Oppel
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Erica C Borresen
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Regina J Brown
- University of Colorado School of Medicine, Aurora, Colorado
| | - Elizabeth P Ryan
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado.
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Elmahallawy EK, Elshopakey GE, Saleh AA, Agil A, El-Morsey A, EL-shewehy DMM, Sad AS, Yanai T, Abdo W. S-Methylcysteine (SMC) Ameliorates Intestinal, Hepatic, and Splenic Damage Induced by Cryptosporidium parvum Infection Via Targeting Inflammatory Modulators and Oxidative Stress in Swiss Albino Mice. Biomedicines 2020; 8:biomedicines8100423. [PMID: 33076496 PMCID: PMC7602666 DOI: 10.3390/biomedicines8100423] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/03/2020] [Accepted: 10/06/2020] [Indexed: 02/07/2023] Open
Abstract
Cryptosporidiosis has been proposed to be one of the major causes of diarrhoeal disease in humans worldwide that possesses zoonotic concern. Thereby, this study investigated the potential effects of s-Methylcysteine (SMC) on the parasite in vivo followed by the measurement of cytokines, oxidative stress parameters, and an investigation of the major histopathological changes. Sixty male Swiss albino mice weighing 20-25 g were allocated equally into five groups and orally administered saline only (control), SMC only (SMC50) (50 mg/kg b.w.), and 104Cryptosporidium parvum oocysts per mouse via an esophageal tube (C + ve untreated). The fourth and fifth groups (C + SMC25, C + SMC50) administrated 104C. parvum oocysts combined with SMC25 (low dose) and 50 (high dose) mg/kg b.w., respectively. At days 7 and 14 post-infection (PI), the feces was collected from each group in order to count C. parvum oocysts. After two weeks of treatment, the animals were euthanized and the serum was collected for biochemical analysis. Next, the intestinal, spleen, and liver sections were dissected for histopathological examination. The results revealed lower oocyst numbers in the C + SMC25 and C + SMC50 groups compared to the infected untreated group. Moreover, higher doses of SMC treatment significantly reduced the enteritis induced by C. parvum in a dose-dependent manner. The hepatic lesions were also mitigated as demonstrated in C + SMC25 and C + SMC50 groups unlike the infected group via lowering the serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase (ALP) enzymes and increasing albumin and globulin serum levels. SMC administration also reduced cytokines production (SAP, TNF-α, IL-6, and IFN-γ) mediated by Cryptosporidium infection in contrast to the infected untreated group. There were marked lymphoid depletion and amyloidosis observed in the infected untreated group, while the treated groups showed obvious increase in the lymphoid elements. Moreover, the scoring of intestinal parasites, hepatic, and splenic lesions in the SMC-treated groups exhibited significantly lower pathological lesions in different organs in a dose-dependent manner, compared to the infected untreated group. Our results also revealed a significant change in the malondialdehyde content with an elevation of glutathione and superoxide dismutase in the intestines collected from C + SMC25 and C + SMC50 mice relative to the untreated group. Taken together, our results indicated that SMC could be a promising effective compound for treating and declining C. parvum infestation via restoring structural alterations in different tissues, enhancing antioxidant enzymes, and suppressing the cytokines liberation.
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Affiliation(s)
- Ehab Kotb Elmahallawy
- Department of Zoonoses, Faculty of Veterinary Medicine, Sohag University, Sohag 82524, Egypt;
- Department of Biomedical Sciences, University of León (ULE), 24071 León, Spain
| | - Gehad E. Elshopakey
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt;
| | - Amira A. Saleh
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt;
| | - Ahmad Agil
- Department of Pharmacology, Faculty of Medicine, University of Granada, 18016 Granada, Spain;
| | - Ahmed El-Morsey
- Parasitology and Animal Diseases Department, Veterinary Research Division, National Research Centre, 33 El Buhouth St. (former El-Tahrir St.), Dokki, P.O., Giza 18010, Egypt;
| | | | - Ahmed S. Sad
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Port Said University, Port Fuad 42526, Egypt;
| | - Tokuma Yanai
- Laboratory of Wildlife and Forensic Pathology, Biomedical Science Examination and Research Center, Department of Veterinary Medicine, Faculty of Veterinary Medicine, Okayama University of Science, 1-3, Ikoinooka, Imabari 794-0085, Ehime, Japan
- Correspondence:
| | - Walied Abdo
- Department of Pathology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr el-Sheikh 33516, Egypt;
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Jin H, Qiao F, Chen L, Lu C, Xu L, Gao X. Serum metabolomic signatures of lymph node metastasis of esophageal squamous cell carcinoma. J Proteome Res 2014; 13:4091-103. [PMID: 25162382 DOI: 10.1021/pr500483z] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Lymph node metastasis was recently proven to be the single most important prognostic factor for esophageal cancer, an important malignant tumor with poor prognosis. A global metabolomics approach was applied to study lymph node metastasis of esophageal squamous cell carcinoma (ESCC). Metabolomics analyses were performed using gas chromatography/mass spectrometry together with univariate and multivariate statistical analyses. There were clear metabolic distinctions between ESCC patients and healthy subjects. ESCC patients could be well-classified according to lymph node metastasis. We further identified a series of differential serum metabolites for ESCC and lymph node metastatic ESCC patients, suggesting metabolic dysfunction in proliferation (aerobic glycolysis, glutaminolysis, fatty acid metabolism, and branched-chain amino acid consumption), apoptosis, migration, immune escape, and oxidative stress of cancer cells in metastatic ESCC patients. In total, three serum metabolites (valine, γ-aminobutyric acid, and pyrrole-2-carboxylic acid) were selected by binary logistic regression analysis, and their combined use resulted in high diagnostic capacity for ESCC metastasis by receiver operating characteristic analysis. The present metabolomics study staged ESCC patients by lymph node metastasis, and the results suggest promising applications of this approach in prognostic prediction, tailored therapeutics, and understanding the pathological mechanisms of poor prognosis of ESCC patients.
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Affiliation(s)
- Hai Jin
- Department of Cardiothoracic Surgery, Changhai Hospital, Second Military Medical University , Shanghai 200433, China
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Sakakima Y, Hayakawa A, Nagasaka T, Nakao A. Prevention of hepatocarcinogenesis with phosphatidylcholine and menaquinone-4: in vitro and in vivo experiments. J Hepatol 2007; 47:83-92. [PMID: 17399847 DOI: 10.1016/j.jhep.2007.01.030] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2006] [Revised: 01/17/2007] [Accepted: 01/23/2007] [Indexed: 12/04/2022]
Abstract
BACKGROUND/AIMS We examined whether phosphatidylcholine inhibited growth of hepatic cancer, as previously shown for menaquinone-4 (vitamin K2). METHODS Growth inhibitions by phosphatidylcholine and/or menaquinone-4 and apoptosis induction by phosphatidylcholine were evaluated in vitro using human hepatic cancer cell lines (Hep-3B, Hep-G2, HuH-7, and Alexander). Effects of these agents were then investigated in male Sprague-Dawley rats against hepatocarcinogenesis induced by diethylnitrosamine plus phenobarbital. All rats were killed to examine livers to evaluate inhibitory potential macroscopically and immunohistochemically using an antibody against the marker of carcinogenesis, glutathione S-transferase and apoptotic induction by phosphatidylcholine using TUNEL staining. Blood samples were obtained by cardiac puncture. RESULTS In vitro, phosphatidylcholine and menaquinone-4 each inhibited cancer cell growth and phosphatidylcholine induced apoptosis dose-dependently. Moreover, exposure to both synergistically inhibited growth in Hep-3B. In vivo, diets containing phosphatidylcholine with or without menaquinone-4 significantly reduced the number of macroscopic hepatic tumor nodules and the extent of abnormally immunoreactive foci conserving hepatic function on serum examinations compared with controls given only the carcinogens. Moreover, phosphatidylcholine supplementation induced apoptosis on TUNEL staining of liver sections. CONCLUSIONS Given together, phosphatidylcholine and menaquinone-4 may exhibit synergy against hepatocarcinogenesis conserving hepatic function that could benefit patients at high risk for hepatocellular carcinoma.
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MESH Headings
- Animals
- Apoptosis
- Carcinoma, Hepatocellular/chemically induced
- Carcinoma, Hepatocellular/pathology
- Carcinoma, Hepatocellular/prevention & control
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Cell Transformation, Neoplastic/chemically induced
- Cell Transformation, Neoplastic/drug effects
- Cell Transformation, Neoplastic/pathology
- Diet
- Diethylnitrosamine/toxicity
- Drug Synergism
- Humans
- Liver Neoplasms/drug therapy
- Liver Neoplasms, Experimental/chemically induced
- Liver Neoplasms, Experimental/pathology
- Liver Neoplasms, Experimental/prevention & control
- Male
- Phenobarbital/toxicity
- Phosphatidylcholines/administration & dosage
- Phosphatidylcholines/therapeutic use
- Rats
- Rats, Sprague-Dawley
- Vitamin K 2/administration & dosage
- Vitamin K 2/analogs & derivatives
- Vitamin K 2/therapeutic use
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Affiliation(s)
- Yoshikazu Sakakima
- Department of Surgery II, Nagoya University School of Medicine, Nagoya, Aichi, Japan.
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Hagihara A, Wanibuchi H, Puatanachokchai R, Kang JS, Miyazi N, Seki S, Fukushima S. Differences in Sensitivity of F344 Rats from Different Breeders to Phenobarbital Hepatocarcinogenicity. J Toxicol Pathol 2006. [DOI: 10.1293/tox.19.29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
| | | | | | - Jin Seok Kang
- Department of Pathology, Osaka City University Medical School
| | - Natsuko Miyazi
- Department of Pathology, Osaka City University Medical School
| | - Shuichi Seki
- Department of Hepatology, Osaka City University Medical School
| | - Shoji Fukushima
- Department of Pathology, Osaka City University Medical School
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Doi K, Wanibuchi H, Salim EI, Shen J, Wei M, Mitsuhashi M, Kudoh S, Hirata K, Fukushima S. Revised rat multi-organ carcinogenesis bioassay for whole-body detection of chemopreventive agents: modifying potential of S-methylcysteine. Cancer Lett 2004; 206:15-26. [PMID: 15019155 DOI: 10.1016/j.canlet.2003.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2003] [Revised: 09/30/2003] [Accepted: 10/02/2003] [Indexed: 11/25/2022]
Abstract
The DMBDD rat multi-organ carcinogenesis model based on two-stage carcinogenesis theory was revised to make more suitable assay system for detecting chemopreventive effects of chemical substances by increasing the doses of two carcinogens, 1,2-dimethylhydrazine dihydrochloride (DMH) and N-butyl-N-(4-hydroxybutyl)nitrosamine (BBN). The revised bioassay resulted in increasing preneoplastic or neoplastic lesions in the colon, urinary bladder and liver. S-Methylcysteine (SMC), a water-soluble organosulfur compound, was used as a test chemical in the new initiation regimen. Though SMC did not express clear-cut inhibitory effects in tumor levels, it showed modifying effects on the development of lung hyperplastic and colon preneoplastic lesions. In conclusion, the present model featuring high yields of preneoplastic and neoplastic lesions with low mortality in a short period (30 weeks), might be suitable for testing the efficacy of possible chemopreventive chemicals at the whole-body level.
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Affiliation(s)
- Kenichiro Doi
- Department of Pathology, Osaka City University Medical School, 1-4-3 Asahi-machi, Abeno-Ku, Osaka 545-8585, Japan
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