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  1. Do dysplastic and adenomatous changes in large bowel hamartomas predispose to malignancy?--A report of two cases
    Visvanathan R, Thambidorai CR, Myint H
    Ann Acad Med Singap, 1992 Nov;21(6):830-2.
    PMID: 1338270
    Two patients, members of one family, with Peutz-Jeghers syndrome are described who underwent surgery for bowel obstruction. Both had multiple polyps in the gastrointestinal tract. Severe dysplasia and adenomatous change were present in two hamartomatous polyps adjacent to a stenosing colonic carcinoma in one patient and moderate dysplasia and adenomatous change were observed in two hamartomatous rectal polyps in his son. These changes support recent reports in the literature of progression towards neoplasia in these lesions.
    Matched MeSH terms: Colonic Neoplasms/pathology*
  2. Antioxidant, cytotoxic activities, and structure-activity relationship of gallic acid-based indole derivatives
    Khaledi H, Alhadi AA, Yehye WA, Ali HM, Abdulla MA, Hassandarvish P
    Arch Pharm (Weinheim), 2011 Nov;344(11):703-9.
    PMID: 21953995 DOI: 10.1002/ardp.201000223
    A new series of gallic hydrazones containing an indole moiety was synthesized through the reaction of gallic hydrazide and different indole carboxaldehydes. Their antioxidant activities were determined on DPPH radical scavenging and inhibition of lipid peroxidation. The in-vitro cytotoxic activities of the compounds were evaluated against HCT-116 (human colon cancer cell line) and MCF-7 (estrogen-dependent human breast cancer cell line) by the MTT method. An attempt to correlate the biological results with their structural characteristics has been done. A limited positive structure activity relationship was found between cytotoxic and antioxidant activities.
    Matched MeSH terms: Colonic Neoplasms/pathology
  3. Apoptosis induction, cell cycle arrest and in vitro anticancer activity of gonothalamin in a cancer cell lines
    Alabsi AM, Ali R, Ali AM, Al-Dubai SA, Harun H, Abu Kasim NH, et al.
    Asian Pac J Cancer Prev, 2012;13(10):5131-6.
    PMID: 23244123
    Cancer is one of the major health problems worldwide and its current treatments have a number of undesired adverse side effects. Natural compounds may reduce these. Currently, a few plant products are being used to treat cancer. In this study, goniothalamin, a natural occurring styryl-lactone extracted from Goniothalamus macrophyllus, was investigated for cytotoxic properties against cervical cancer (HeLa), breast carcinoma (MCF-7) and colon cancer (HT29) cells as well as normal mouse fibroblast (3T3) using MTT assay. Fluorescence microscopy showed that GTN is able to induce apoptosis in HeLa cells in a time dependent manner. Flow cytometry further revealed HeLa cells treated with GTN to be arrested in the S phase. Phosphatidyl serine properties present during apoptosis enable early detection of the apoptosis in the cells. Using annexin V/PI double staining it could be shown that GTN induces early apoptosis on HeLa cells after 24, 48 and 72 h. It could be concluded that goniothalamin showing a promising cytotoxicity effect against several cancer cell lines including cervical cancer cells (HeLa) with apoptosis as the mode of cell death induced on HeLa cells by Goniothalamin was.
    Matched MeSH terms: Colonic Neoplasms/pathology
  4. Fulltext Characteristics of young colorectal cancer in Brunei Darussalam: an epidemiologic study of 29 years (1986-2014)
    Koh KS, Telisinghe PU, Bickle I, Abdullah MS, Chong CF, Chong VH
    Asian Pac J Cancer Prev, 2015;16(8):3279-83.
    PMID: 25921132
    BACKGROUND: Colorectal cancer (CRC) is the most common gastrointestinal cancer and the incidence is increasing. CRC is more common with increasing age, but a proportion occurs in young adults, termed young CRC. This study assessed the incidence and the demographic of young CRC in Brunei Darussalam.

    MATERIALS AND METHODS: All histologically proven CRC between 1986 and 2014 registered with the Department of Pathology cancer registry were reviewed and data extracted for analyses. Young CRC was defined as cancer in patients aged less than 45 years. The various population groups were categorized into locals (Malays, Chinese and Indigenous) and expatriates.

    RESULTS: Over the study period, there were 1,126 histologically proven CRC (mean age 59.1 ± 14.7 years, Male 58.0%, Locals 91.8% and 8.2% expatriates). Young CRC accounted for 15.1% with the proportion declining over the years, from 29% (1986-1990) to 13.2% (2011-2014). The proportion of young CRC was highest among the indigenous (30.8%), followed by the expatriates (29.3%), Malays (14.3%) and lowest among the Chinese (10.8%). The mean age of young CRC was 35.9 ± 6.2; lowest among the indigenous (33.5 ± 6.7), expatriate (34.9 ± 6.0) groupd and the Malays (35.6 ± 6.5) compared to the Chinese (38.6 ± 4.6), a similar trend being observed in the non-young CRC groups. There were no difference between the genders and tumor locations (rectum or colon) between the young and the non-young CRC cases. Female young CRC was significantly younger than male (p<0.05) without any significant variation between the various population groups (p>0.05).

    CONCLUSIONS: Our study showed that the young CRC accounted for 15.1% of all CRC with declining trend observed over recent years. Young CRC was more common among indigenous, expatriates and Malays and least common among the Chinese. There were no differences in the gender and tumor locations.
    Matched MeSH terms: Colonic Neoplasms/pathology
  5. Fulltext Prognostic factors and the role of adjuvant chemotherapy in post-curative surgery for Dukes B and C colon cancers and survival outcomes: a Malaysian experience
    Hassan AS, Naicker M, Yusof KH, Wan Ishak WZ
    Asian Pac J Cancer Prev, 2015;16(6):2237-43.
    PMID: 25824744
    BACKGROUND: Adjuvant chemotherapy improves survival in Dukes C colon cancers post-curative resection. However, the evidence for a role with Dukes B lesions remains unproven despite frequent use for disease characterized by poor prognostic features. In view of limited Asia-specific data, this study aimed to determine survival outcomes and identify prognostic factors in a tertiary teaching hospital in Malaysia.

    MATERIALS AND METHODS: A total of 116 subjects who underwent curative surgery with and without adjuvant chemotherapy for Duke B and C primary colon adenocarcinomas diagnosed from 2004-2009 were recruited and data were collected retrospectively. Five-year overall survival (OS) and disease free survival (DFS) were analysed using Kaplan-Meier survival analysis and log-rank (Mantel-Cox) test. Prognostic factors were determined using Cox proportional hazards regression with both univariate and multivariate analyses.

    RESULTS: The survival analysis demonstrated a 5-year OS of 74.0% for all patients, with 74.9% for Dukes C subjects receiving chemotherapy compared to 28.6% in those not receiving chemotherapy (p=0.001). For Dukes B disease, the 5-year survival rate was 82.6% compared to 75.0% for subjects receiving and not receiving chemotherapy, respectively (p=0.17). Independent prognostic factors identified included a CEA level more than 3.5 ng/ml (hazard ratio (HR)=4.78; p=0.008), serosal involvement (HR=3.75; p=0.028) and completion of chemotherapy (HR= 0.20; p=0.007).

    CONCLUSIONS: In a regional context, this study supports current evidence from the West that adjuvant chemotherapy improves survival in Dukes C colon cancers post curative surgery. However, although a clear benefit has yet to be proven for Dukes B disease, our results suggest survival improvement in selected cases.
    Matched MeSH terms: Colonic Neoplasms/pathology
  6. Fulltext Polymeric Microsphere Formulation for Colon Targeted Delivery of 5-Fluorouracil Using Biocompatible Natural Gum Katira
    Karan S, Choudhury H, Chakra BK, Chatterjee TK
    Asian Pac J Cancer Prev, 2019 07 01;20(7):2181-2194.
    PMID: 31350983 DOI: 10.31557/APJCP.2019.20.7.2181
    Controlled release delivery system of chemotherapeutic agents at the site of colon endorses modern drug-entrapped
    delivery tools, which release the entrappedagents at a controlled rate for anextended period providing patient compliance
    and additional protection from the degradinggastric environment. Thus, the present study was aimed to develop
    and optimize a novel polymeric microsphere of 5-fluorouracil (5-FU) using natural gum katira to obtain an optimal
    therapeutic response at the colon. Due course of experimentation, in-vivo safety profile of the gum katira in an animal
    model was established. Modified solvent extraction/evaporation technique wasemployed to encapsulate 5-FU in the
    natural polymeric microsphere and was characterized using in-vitro studies to investigate particle size, morphology,
    encapsulation efficiency and release of the drug from developed formulation. Formulated and optimized polymeric
    microsphere of 5-FU using gum katira polymer own optimal physicochemical characteristics with a fine spherical particle
    with size ranged from 210.37±7.50 to 314.45±7.80 μm.Targeted microsphere exhibited good cytotoxicity and also has
    high drug entrapment efficiency, and satisfactory release pattern of the drug within a time frame of 12 h. Finally, we
    foresee that the optimized polymeric gum katiramicrosphere of 5-FU could be a promising micro-carrier for efficient
    colon drug targeting delivery tool with improved chemotherapeutic efficacy against colon cancer.
    Matched MeSH terms: Colonic Neoplasms/pathology
  7. Fulltext Evaluation of chemopreventive potential of Strobilanthes crispus against colon cancer formation in vitro and in vivo
    Al-Henhena N, Khalifa SA, Ying RP, Ismail S, Hamadi R, Shawter AN, et al.
    BMC Complement Altern Med, 2015;15(1):419.
    PMID: 26608653 DOI: 10.1186/s12906-015-0926-7
    With cancer being one of the major causes of death around the world, studies are ongoing to find new chemotherapeutic leads. There are common mechanisms for colorectal cancer (CRC) formation. Several are connected with oxidative stress-induced cell apoptosis and others are related to imbalanced homeostasis or intake of drugs/toxins. Plants that have been used for decades in folk and traditional medicine have been accepted as one of the commonest sources of discovered natural agents of cancer chemotherapy and chemoprevention. The aim was to study the antioxidant and chemopreventive effects of Strobilanthes crispus on colorectal cancer formation.
    Matched MeSH terms: Colonic Neoplasms/pathology
  8. Fulltext Induction of apoptosis of 2,4',6-trihydroxybenzophenone in HT-29 colon carcinoma cell line
    Lay MM, Karsani SA, Malek SN
    Biomed Res Int, 2014;2014:468157.
    PMID: 24579081 DOI: 10.1155/2014/468157
    2,4',6-Trihydroxy-4-methoxybenzophenone was isolated from the ethyl acetate fraction of Phaleria macrocarpa (Scheff.) Boerl. fruits. It was found to inhibit cell proliferation in HT-29 human colon carcinoma cell line but caused little damage to WRL-68 normal human liver and MRC-5 normal human fibroblast lung cell lines. The compound was found to sharply affect the viability of HT-29 cells in a dose- and time-dependent manner. HT-29 cells treated with the compound showed morphological changes under microscopic examination such as cell shrinkage, membrane blebbing, DNA fragmentation, and the occurrence of apoptotic nuclei. The percentage of early apoptotic, late apoptotic, and dead or necrotic cells was determined by flow cytometry using annexin V-FTIC/PI staining. In addition, flow cytometry showed that, when the HT-29 cells were treated with 115 µM of the compound, it resulted in G0/G1 phase arrest in a time-dependent manner. Western blot revealed an upregulation of PUMA, Bak, Bcl-2, and Mcl-1 proteins suggesting that the compound induced apoptosis in HT-29 cells by regulating these proteins.
    Matched MeSH terms: Colonic Neoplasms/pathology*
  9. In Vitro Anticancer Activity of Au, Ag Nanoparticles Synthesized Using Commelina nudiflora L. Aqueous Extract Against HCT-116 Colon Cancer Cells
    Kuppusamy P, Ichwan SJ, Al-Zikri PN, Suriyah WH, Soundharrajan I, Govindan N, et al.
    Biol Trace Elem Res, 2016 Oct;173(2):297-305.
    PMID: 26961292 DOI: 10.1007/s12011-016-0666-7
    Recently, metal nanoparticles have been getting great medical and social interests due to their potential physico-chemical properties such as higher affinity, low molecular weight, and larger surface area. The biosynthesized gold and silver nanoparticles are spherical, triangular in shape with an average size of 24-150 nm as reported in our earlier studies. The biological properties of synthesized gold and silver nanoparticles are demonstrated in this paper. The different in vitro assays such as MTT, flow cytometry, and reverse transcription polymerase chain reaction (RT-qPCR) techniques were used to evaluate the in vitro anticancer properties of synthesized metal nanoparticles. The biosynthesized gold and silver nanoparticles have shown reduced cell viability and increased cytotoxicity in HCT-116 colon cancer cells with IC50 concentration of 200 and 100 μg/ml, respectively. The flow cytometry experiments revealed that the IC50 concentrations of gold and silver nanoparticle-treated cells that have significant changes were observed in the sub-G1 cell cycle phase compared with the positive control. Additionally, the relative messenger RNA (mRNA) gene expressions of HCT-116 cells were studied by RT-qPCR techniques. The pro-apoptotic genes such as PUMA (++), Caspase-3 (+), Caspase-8 (++), and Caspase-9 (++) were upregulated in the treated HCT-116 cells compared with cisplatin. Overall, these findings have proved that the synthesized gold and silver nanoparticles could be potent anti-colon cancer drugs.
    Matched MeSH terms: Colonic Neoplasms/pathology
  10. Fulltext Establishment of in vitro and in vivo anti-colon cancer efficacy of essential oils containing oleo-gum resin extract of Mesua ferrea
    Asif M, Yehya AHS, Dahham SS, Mohamed SK, Shafaei A, Ezzat MO, et al.
    Biomed Pharmacother, 2019 Jan;109:1620-1629.
    PMID: 30551416 DOI: 10.1016/j.biopha.2018.10.127
    Proven the great potential of essential oils as anticancer agents, the current study intended to explore molecular mechanisms responsible for in vitro and in vivo anti-colon cancer efficacy of essential oil containing oleo-gum resin extract (RH) of Mesua ferrea. MTT cell viability studies showed that RH had broad spectrum cytotoxic activities. However, it induced more profound growth inhibitory effects towards two human colon cancer cell lines i.e., HCT 116 and LIM1215 with an IC50 values of 17.38 ± 0.92 and 18.86 ± 0.80 μg/mL respectively. RH induced relatively less toxicity in normal human colon fibroblasts i.e., CCD-18co. Cell death studies conducted, revealed that RH induced characteristic morphological and biochemical changes in HCT 116. At protein level it down-regulated expression of multiple pro-survival proteins i.e., survivin, xIAP, HSP27, HSP60 and HSP70 and up-regulated expression of ROS, caspase-3/7 and TRAIL-R2 in HCT 116. Furthermore, significant reduction in invasion, migration and colony formation potential was observed in HCT 116 treated with RH. Chemical characterization by GC-MS and HPLC methods revealed isoledene and elemene as one the major compounds. RH showed potent antitumor activity in xenograft model. Overall, these findings suggest that RH holds a promise to be further studied for cheap anti-colon cancer naturaceutical development.
    Matched MeSH terms: Colonic Neoplasms/pathology
  11. Fulltext Benzylidene derivatives of andrographolide inhibit growth of breast and colon cancer cells in vitro by inducing G(1) arrest and apoptosis
    Jada SR, Matthews C, Saad MS, Hamzah AS, Lajis NH, Stevens MF, et al.
    Br J Pharmacol, 2008 Nov;155(5):641-54.
    PMID: 18806812 DOI: 10.1038/bjp.2008.368
    BACKGROUND AND PURPOSE: Andrographolide, the major phytoconstituent of Andrographis paniculata, was previously shown by us to have activity against breast cancer. This led to synthesis of new andrographolide analogues to find compounds with better activity than the parent compound. Selected benzylidene derivatives were investigated for their mechanisms of action by studying their effects on the cell cycle progression and cell death.
    EXPERIMENTAL APPROACH: Microculture tetrazolium, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) and sulphorhodamine B (SRB) assays were utilized in assessing the in vitro growth inhibition and cytotoxicity of compounds. Flow cytometry was used to analyse the cell cycle distribution of control and treated cells. CDK1 and CDK4 levels were determined by western blotting. Apoptotic cell death was assessed by fluorescence microscopy and flow cytometry.
    KEY RESULTS: Compounds, in nanomolar to micromolar concentrations, exhibited growth inhibition and cytotoxicity in MCF-7 (breast) and HCT-116 (colon) cancer cells. In the NCI screen, 3,19-(2-bromobenzylidene) andrographolide (SRJ09) and 3,19-(3-chloro-4-fluorobenzylidene) andrographolide (SRJ23) showed greater cytotoxic potency and selectivity than andrographolide. SRJ09 and SRJ23 induced G(1) arrest and apoptosis in MCF-7 and HCT-116 cells, respectively. SRJ09 downregulated CDK4 but not CDK1 level in MCF-7 cells. Apoptosis induced by SRJ09 and SRJ23 in HCT-116 cells was confirmed by annexin V-FITC/PI flow cytometry analysis.
    CONCLUSION AND IMPLICATIONS: The new benzylidene derivatives of andrographolide are potential anticancer agents. SRJ09 emerged as the lead compound in this study, exhibiting anticancer activity by downregulating CDK4 to promote a G(1) phase cell cycle arrest, coupled with induction of apoptosis.
    Matched MeSH terms: Colonic Neoplasms/pathology
  12. Virotherapy: Current Trends and Future Prospects for Treatment of Colon and Rectal Malignancies
    Lee CL, Veeramani S, Molouki A, Lim SHE, Thomas W, Chia SL, et al.
    Cancer Invest, 2019;37(8):393-414.
    PMID: 31502477 DOI: 10.1080/07357907.2019.1660887
    Colorectal cancer (CRC) is one of the most common malignancies. In recent decades, early diagnosis and conventional therapies have resulted in a significant reduction in mortality. However, late stage metastatic disease still has very limited effective treatment options. There is a growing interest in using viruses to help target therapies to tumour sites. In recent years the evolution of immunotherapy has emphasised the importance of directing the immune system to eliminate tumour cells; we aim to give a state-of-the-art over-view of the diverse viruses that have been investigated as potential oncolytic agents for the treatment of CRC.
    Matched MeSH terms: Colonic Neoplasms/pathology
  13. 6-Shogaol inhibits breast and colon cancer cell proliferation through activation of peroxisomal proliferator activated receptor γ (PPARγ)
    Tan BS, Kang O, Mai CW, Tiong KH, Khoo AS, Pichika MR, et al.
    Cancer Lett, 2013 Aug 9;336(1):127-39.
    PMID: 23612072 DOI: 10.1016/j.canlet.2013.04.014
    6-Shogaol has been shown to possess many antitumor properties including inhibition of cancer cell growth, inhibition of cancer metastasis, induction of apoptosis in cancer cells and induction of cancer cell differentiation. Despite its prominent antitumor effects, the direct molecular target of 6-shogaol has remained elusive. To identify the direct targets of 6-shogaol, a comprehensive antitumor profile of 6-shogaol (NSC752389) was tested in the NCI-60 cell line in an in vitro screen. The results show that 6-shogaol is COMPARE negative suggesting that it functions via a mechanism of action distinct from existing classes of therapeutic agents. Further analysis using microarray gene profiling and Connectivity Map analysis showed that MCF-7 cells treated with 6-shogaol display gene expression signatures characteristic of peroxisome proliferator activated receptor γ (PPARγ) agonists, suggesting that 6-shogaol may activate the PPARγ signaling pathway for its antitumor effects. Indeed, treatment of MCF-7 and HT29 cells with 6-shogaol induced PPARγ transcriptional activity, suppressed NFκB activity, and induced apoptosis in breast and colon cancer cells in a PPARγ-dependent manner. Furthermore, 6-shogaol is capable of binding to PPARγ with a binding affinity comparable to 15-delta prostaglandin J2, a natural ligand for PPARγ. Together, our findings suggest that the antitumor effects of 6-shogaol are mediated through activation of PPARγ and imply that activation of PPARγ might be beneficial for breast and colon cancer treatment.
    Matched MeSH terms: Colonic Neoplasms/pathology
  14. Fulltext Redundant Innate and Adaptive Sources of IL17 Production Drive Colon Tumorigenesis
    Housseau F, Wu S, Wick EC, Fan H, Wu X, Llosa NJ, et al.
    Cancer Res, 2016 04 15;76(8):2115-24.
    PMID: 26880802 DOI: 10.1158/0008-5472.CAN-15-0749
    IL17-producing Th17 cells, generated through a STAT3-dependent mechanism, have been shown to promote carcinogenesis in many systems, including microbe-driven colon cancer. Additional sources of IL17, such as γδ T cells, become available under inflammatory conditions, but their contributions to cancer development are unclear. In this study, we modeled Th17-driven colon tumorigenesis by colonizing Min(Ap) (c+/-) mice with the human gut bacterium, enterotoxigenic Bacteroides fragilis (ETBF), to investigate the link between inflammation and colorectal cancer. We found that ablating Th17 cells by knocking out Stat3 in CD4(+) T cells delayed tumorigenesis, but failed to suppress the eventual formation of colonic tumors. However, IL17 blockade significantly attenuated tumor formation, indicating a critical requirement for IL17 in tumorigenesis, but from a source other than Th17 cells. Notably, genetic ablation of γδ T cells in ETBF-colonized Th17-deficient Min mice prevented the late emergence of colonic tumors. Taken together, these findings support a redundant role for adaptive Th17 cell- and innate γδT17 cell-derived IL17 in bacteria-induced colon carcinogenesis, stressing the importance of therapeutically targeting the cytokine itself rather than its cellular sources. Cancer Res; 76(8); 2115-24. ©2016 AACR.
    Matched MeSH terms: Colonic Neoplasms/pathology*
  15. Adaptation of international guidelines for metastatic colorectal cancer: an asian consensus
    Cheng AL, Li J, Vaid AK, Ma BB, Teh C, Ahn JB, et al.
    Clin Colorectal Cancer, 2014 Sep;13(3):145-55.
    PMID: 25209093 DOI: 10.1016/j.clcc.2014.06.004
    Colorectal cancer (CRC) is among the most common cancers worldwide, but marked epidemiological differences exist between Asian and non-Asian populations. Hence, a consensus meeting was held in Hong Kong in December 2012 to develop Asia-specific guidelines for the management of metastatic CRC (mCRC). A multidisciplinary expert panel, consisting of 23 participants from 10 Asian and 2 European countries, discussed current guidelines for colon or rectal cancer and developed recommendations for adapting these guidelines to Asian clinical practice. Participants agreed that mCRC management in Asia largely follows international guidelines, but they proposed a number of recommendations based on regional 'real-world' experience. In general, participants agreed that 5-fluorouracil (5-FU) infusion regimens in doublets can be substituted with UFT (capecitabine, tegafur-uracil) and S1 (tegafur, 5-chloro-2,4-dihydroxypyridine and oxonic acid), and that the monoclonal antibodies cetuximab and panitumumab are recommended for KRAS wild type tumors. For KRAS mutant tumors, bevacizumab is the preferred biological therapy. FOLFOX (folinic acid, 5-FU, and oxaliplatin) is preferred for initial therapy in Asian patients. The management of mCRC is evolving, and it must be emphasized that the recommendations presented here reflect current treatment practices and thus might change as more data become available.
    Matched MeSH terms: Colonic Neoplasms/pathology
  16. Lignans and Polyphenols of Phyllanthus amarus Schumach and Thonn Induce Apoptosis in HCT116 Human Colon Cancer Cells through Caspases-Dependent Pathway
    Mohamed SIA, Jantan I, Nafiah MA, Seyed MA, Chan KM
    Curr Pharm Biotechnol, 2021;22(2):262-273.
    PMID: 32532192 DOI: 10.2174/1389201021666200612173029
    BACKGROUND: The anticancer effects of Phyllanthus amarus extract on various cancer cells have been investigated, however, the effects of its major constituents on HCT116 human colorectal cancer cells have not been reported.

    OBJECTIVE: In the present study, we investigated the cytotoxic effect of 80% ethanol extract of P. amarus and its marker constituents (phyllanthin, hypophyllanthin, gallic acid, niranthin, greraniin, phyltetralin, isolintetralin, corilagin and ellagic acid) on HCT116 and their underlying mechanisms of action.

    METHODS: Their antiproliferative and apoptotic effects on HCT 116 were performed using MTT assay and flow cytometric analysis, respectively, while caspases 3/7, 8 and 9 activities were examined using the colorimetric method. The expression of cleaved poly ADP ribose polymerase enzyme (PARP) and cytochrome c proteins was investigated by the immune-blot technique.

    RESULTS AND DISCUSSION: HPLC and LC-MS/MS analyses demonstrated that the extract contained mainly lignans and polyphenols. The plant samples markedly suppressed the growth and expansion of HCT116 cells in a concentration- and time-dependent manner with no toxicity against normal human fibroblast CCD18 Co. P. amarus extract, phyllanthin and gallic acid induced mode of cell death primarily through apoptosis as confirmed by the exteriorization of phosphatidylserine. Caspases 3/7, 8, and 9 activities increased in a concentration-dependent manner following 24h treatment. The expressions of cleaved PARP (Asp 214) and cytochrome c were markedly upregulated.

    CONCLUSION: P. amarus extract, phyllanthin and gallic acid exhibited an apoptotic effect on HCT116 cells through the caspases-dependent pathway.

    Matched MeSH terms: Colonic Neoplasms/pathology
  17. Synthesis and Characterization of a New Benzoindole Derivative with Apoptotic Activity Against Colon Cancer Cells
    Hajiaghaalipour F, Faraj FL, Bagheri E, Ali HM, Abdulla MA, Majid NA
    Curr Pharm Des, 2017;23(41):6358-6365.
    PMID: 28325143 DOI: 10.2174/1381612823666170321093345
    BACKGROUND: Colorectal cancer is the third most common form of cancer in both men and women around the world. The chemistry and biological study of heterocyclic compounds have been an interesting area for a long time in pharmaceutical and medicinal chemistry.

    METHODS: A new synthetic compound, 2-(1,1-dimethyl-1H-benzo[e]indol-2-yl)-3-((2-hydroxyphenyl)amino) acrylaldehyde, abbreviated as DBID, was prepared through the reaction of 2-(diformylmethylidene)-1,1- dimethylbenzo[e]indole with 2-aminophenol. The chemical structure of the synthesized compound was characterized by 1H NMR, 13C NMR and APT-NMR spectroscopy and confirmed by elemental analysis (CHN). The compound was screened for the antiproliferation effect against colorectal cancer cell line, HCT 116 and its possible mechanism of action was elucidated. To determine the IC50 value, the MTT assay was used and its apoptosisinducing effect was investigated.

    RESULTS: DBID inhibited the proliferation of HCT 116 cells with an IC50 of 9.32 µg/ml and significantly increased the levels of caspase -8, -9 and -3/7 in the treated cells compared to untreated cells. Apoptosis features in HCT 116 cell was detected in treated cells by using the AO/PI staining that confirmed that the cells had undergone remarkable morphological changes in apoptotic bodies. Furthermore, this changes in expression of caspase -8, -9 and -3 were confirmed by gene and protein quantification using RT-PCR and western blot analysis, respectively.

    CONCLUSION: The current study showed that the DBID compound has demonstrated chemotherapeutic activity which was evidenced by significant increases in the expression and activation of caspase and exploit the apoptotic signaling pathways to trigger cancer cell death.

    Matched MeSH terms: Colonic Neoplasms/pathology
  18. Fulltext Hippuric acid nanocomposite enhances doxorubicin and oxaliplatin-induced cytotoxicity in MDA-MB231, MCF-7 and Caco2 cell lines
    Hussein Al Ali SH, Al-Qubaisi M, Hussein MZ, Ismail M, Bullo S
    Drug Des Devel Ther, 2013;7:25-31.
    PMID: 23345969 DOI: 10.2147/DDDT.S37070
    The aim of the current study is to design a new nanocomposite for inducing cytotoxicity of doxorubicin and oxaliplatin toward MDA-MB231, MCF-7, and Caco2 cell lines. A hippuric acid (HA) zinc layered hydroxide (ZLH) nanocomposite was synthesized under an aqueous environment using HA and zinc oxide (ZnO) as the precursors.
    Matched MeSH terms: Colonic Neoplasms/pathology
  19. Localized giant pseudopolyposis in ulcerative colitis
    Munchar J, Rahman HA, Zawawi MM
    Eur J Gastroenterol Hepatol, 2001 Nov;13(11):1385-7.
    PMID: 11692068
    Localized giant pseudopolyposis is an interesting but unusual manifestation of both ulcerative colitis and Crohn's disease. The purpose of this report is to present a case of localized giant pseudopolyposis complicating an ulcerative colitis, and review other cases reported in the literature. The clinical and pathological findings are described. The authors also discuss the possible aspect of proper management in this type of lesion.
    Matched MeSH terms: Colonic Neoplasms/pathology
  20. Human colon cancer targeted pro-apoptotic, anti-metastatic and cytostatic effects of binuclear Silver(I)-N-Heterocyclic carbene (NHC) complexes
    Asif M, Iqbal MA, Hussein MA, Oon CE, Haque RA, Khadeer Ahamed MB, et al.
    Eur J Med Chem, 2016 Jan 27;108:177-187.
    PMID: 26649905 DOI: 10.1016/j.ejmech.2015.11.034
    The current mechanistic study was conducted to explore the effects of increased lipophilicity of binuclear silver(I)-NHC complexes on cytotoxicity. Two new silver(I)-N-Heterocyclic Carbene (NHC) complexes (3 and 4), having lypophilic terminal alkyl chains (Octyl and Decyl), were derived from meta-xylyl linked bis-benzimidazolium salts (1 and 2). Each of the synthesized compounds was characterized by microanalysis and spectroscopic techniques. The complexes were tested for their cytotoxicity against a panel of human cancer c as well normal cell lines using MTT assay. Based on MTT assay results, complex 4 was found to be selectively toxic towards human colorectal carcinoma cell line (HCT 116). Complex 4 was further studied in detail to explore the mechanism of cell death and findings of the study revealed that complex 4 has promising pro-apoptotic and anti-metastatic activities against HCT 116 cells. Furthermore, it showed pronounced cytostatic effects in HCT 116 multicellular spheroid model. Hence, binuclear silver(I)-NHC complexes with longer terminal aliphatic chains have worth to be further studied against human colon cancer for the purpose of drug development.
    Matched MeSH terms: Colonic Neoplasms/pathology
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