1 / 28

Group members

Group members. Mrs. Prisna Pianjing Ms. Monta Thammasatta Ms. Kunnika Changwichan Mrs. Indra Gurung Ms. Davong Oumavong. Hepatocellular carcinoma (HCC). Cancer arise from hepatocyte. It is found at peak age 50-70 years and commonly occur in men.

arleens
Download Presentation

Group members

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Group members • Mrs. Prisna Pianjing • Ms. Monta Thammasatta • Ms. Kunnika Changwichan • Mrs. Indra Gurung • Ms. Davong Oumavong

  2. Hepatocellular carcinoma (HCC) Cancer arise from hepatocyte It is found at peak age 50-70 years and commonly occur in men Major causes are Hepatitis viral infection and Aflatoxin B1 HCC is the fifth leading cause of cancer mortality in the world Its incidence is highest in sub-Saharan Africa, China, southern Asia, and Japan. http://www.healingdaily.com/conditions/cirrhosis

  3. Sign and symptoms • - Loss of appetite and weight • Abdominal pain, especially in the upper right • part of the abdomen, that may extend into • back and shoulder • - Nausea and vomiting • - General weakness and fatigue • - An enlarged liver • - Abdominal swelling (ascites) • A yellow discoloration of skin and the • whites of eyes (jaundice)

  4. Mechanism of hepatocarcinogenesis • Chronic hepatitis and cirrhosis commonly occur in preneoplastic stage • Hepatitis B core antigen (HBcAg),Hepatitis Bsurface antigen (HBsAg),HBx • Hepatitis C virus • DNA Adduct by AflatoxinB1 • Combination

  5. Diagnosis of HCC • The prognosis for patients with HCC after diagnosis is poor. • The early detection of HCC might therefore be a mean to improve survival prospect. • Done by basic laboratory evaluation and conducts every 6-12 months in patients at risk. • Ultrasonography, MRI and CT scan can be used as detection for HCC associate with blood evaluation. How to detect HCC earlier….

  6. Development of Hepatocellular carcinoma

  7. Treatment of HCC • Surgical Resection,Transplantation • Non surgical Chemotherapy Prognosis of HCC Depends on the size of the tumor and the extent of liver function impairment The life expectancy of HCC patients is hard to predict because of the high possibility of postoperative recurrence.

  8. Poor prognosis is result from many factors: Poor early detection Treatment is high cost and often recurrence Harmful infection and difficult to treat Exposure of risk factors are difficult to avoid That why we must focus on prevention

  9. Chemoprevention & Chemo intervention The most important public health and medical practice is prevention of cancer “Prevent is better than cure” Chemopreventive agents are any and all natural or synthetic compound that can Inhibit, suppress, or reverse the development and progression of cancer Chemo preventive agents can be administered as dietary component in food dietary supplements or pharmaceuticals preparations.

  10. Therapy Prevention Chemo preventive agent • Cancer Patients • Toxicity acceptable • Molecular marker • Synthetic drugs • Combination with CPA • High Risk • Non-toxic • Altered Food • Molecular markers • Combination CPA CTA CPA : Chemopreventive agents CTA : Chemotherapeutic agents

  11. Which way we can do in case of HCC……. - Enhance detoxification - Prevent premalignant cell - Early detection What are we going to do……. Stimulate detoxificatin aflatoxinB1 removed Enhance production of Phase II enzyme

  12. Phase II enzyme for removal Aflatoxin B1 The enzyme conjugate Aflatoxin B1 for excreting out via urineis.. Glutathione S-transferase (GSTs) Aflatoxin-N-acetylcysteine

  13. To enhance this reaction, GST must be activated Sulphoraphan and curcuminoid have high potency to induce phase II enzyme…. We’ve known that these two substances can induce GST......How… Transcriptional control to phase II gene is achieve by the binding of Nrf2 (nuclear factor erythroid2-relate factor) to consensus activate antioxidant response element (ARE) Keap1 repress Nf2 but if it dissociate from Keap1 ARE will be activated and GST will be produced

  14. www.ptinr.com/data/articlefiles/39-sprout.jpg www.communitygarden.org.au/.../root/tumeric.jpg Broccoli : A cruciferous vegetable that has high potency in prevention of cancer….How!! It contains a large numbers of phytochemical: The most significant is Glucosinolate It is a precursor of 2 groups of active compounds Isothiocyanate and Indoles

  15. www.rsc.org/images/soundbite3-400_tcm18-50620.jpg

  16. Phenethyl isothiocyanate (R = C6H5CH2CH2–) isothionates Both groups have high affinity to induce Phase II enzyme and inhibit tumor proliferation. indoles

  17. www.samispices.com/images/turmericimg.gif Curcumin from Tumeric Curcumin is the main biological active compound of rhizome of tumeric It has unique ability to fit through aryl hydrocarbon receptor : estrogen receptor Curcumin is both strongly anti-inflammatory and strongly anti-oxidant. Precaution: Reduce potency of chemotherapy drugs accumulate in liver if liberate at high dose

  18. Effect of chemopreventive on carcinogen-metabolizing enzyme Source: Gerhauser, C and et.al. 2002

  19. Mixing of curcumin with glucosinolate compound There are many researches indicate that using the combination of curcumain and glucosinolate give higher advantage to treat prostate cancer Using both substances at low dose give good result Of induce apoptosis and inhibit tumor signaling We expect that using these two compound in one dose Will give the same result in HCC

  20. 2 mechanisms Phosphorelate Nrf2 by MAPK Direct interaction of electrophilic agents with reactive thiol residues .

  21. In vitro….. Testing method for this assumption… Gene-reporter method as high throughput technique By using Luciferase assay to quantify efficiency • Plasmid construct by using pGL-3 promoter vector consists of • firefly luciferase (luc) gene driven by simian virus 40 (SV40) 2. This vector was insert with ARE transcriptional enhancer sequence 3. Transfect the vector into cell (primary liver cell & HepG2) 4. Incubate cells with broccoli and curcumin extract and control substances (zinc and oltipraz), varies time and concentration 5. Lyses cell and measure luciferase activities

  22. Plasmid construction

  23. Premalignant cell prevention Enhance apoptosis&Inhibit of tumor promoters cascade Focus on cell survival signaling pathway ERK, MAPK ,STAT and NfKB are in our focus

  24. Material and method • Cell line ; same as gene reporter method • Western blotting • Testing substances - mixing of broccoli extract and curcumin - Test single compound - Positive control are piroxicam

  25. Expectation…… Getting the effective concentration from in vitro experiment that can be used further in vivo, clinical trial and products The using of combination of curcumin and broccoli might be the the better alternative way to prevention Than using single compound.

  26. Zinc was examined in cultured retinal pigment epithelial cells that it can induce GST enzyme by using Luciferase method. (Ha, Khoi-Nguyen., et. al. 2006) Oltipraz was evaluated as chemopreventive agent in rat and can inhibit preneoplastic cell in liver after expose to AFB1. (Roebuck,B D., et al. 2003)

More Related