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Fulltext Chemopreventive Properties and Toxicity of Kelulut Honey in Sprague Dawley Rats Induced with Azoxymethane

Saiful Yazan L, Muhamad Zali MF, Mohd Ali R, Zainal NA, Esa N, Sapuan S, et al.

Biomed Res Int, 2016;2016:4036926.
PMID: 27525267 DOI: 10.1155/2016/4036926

Ethnopharmacological Relevance. Colon cancer has been a major problem worldwide. Kelulut honey (KH) is produced by the stingless bees from Trigona species and has strong antioxidant activities that could be one of the potential chemopreventive agents from natural resources. Aim of This Study. This study investigated the chemopreventive properties and toxicity of KH in Sprague Dawley rats induced with azoxymethane (AOM). Material and Method. Twenty-four male Sprague Dawley rats aged 5 weeks were divided into 4 groups: (G1) untreated group not induced with AOM, (G2) untreated group induced with AOM, (G3) treated group induced with AOM, and (G4) treated group not induced with AOM. Injection of AOM (15 mg/kg) was via intraperitoneal route once a week for two subsequent weeks. The treatment groups were given oral administration of KH (1183 mg/kg body weight) twice daily for 8 weeks. Results. Treatment with KH significantly reduced the total number of aberrant crypt foci (ACF) and aberrant crypts (AC) and crypt multiplicity. KH was not toxic to the animals since the level of blood profile parameters, liver enzymes, and kidney functions was in normal range. Conclusions. The current finding shows that KH has chemopreventive properties in rats induced with colorectal cancer and also was found not toxic towards the animals.

Matched MeSH terms: Colorectal Neoplasms/chemically induced
Chemopreventive activity of methanol extract of Melastoma malabathricum leaves in DMBA-induced mouse skin carcinogenesis

Kooi OK, Ling CY, Rodzi R, Othman F, Mohtarrudin N, Suhaili Z, et al.

Afr J Tradit Complement Altern Med, 2014;11(4):66-70.
PMID: 25392583

BACKGROUND: Melastoma malabathricum L. Smith (family Melastomaceae) is a shrub that has been used by the Malay practitioners of traditional medicine to treat various types of ailments. The present study aimed to determine the chemopreventive activity of methanol extract of M. malabathricum leaves (MEMM) using the standard 7,12-dimethylbenz(α)anthracene (DMBA)/croton oil-induced mouse skin carcinogenesis model.
MATERIALS AND METHODS: In the initiation phase, the mice received a single dose of 100µl/100 µg DMBA (group I-V) or 100µl acetone (group VI) topically on the dorsal shaved skin area followed by the promotion phase involving treatment with the respective test solutions (100 µl of acetone, 10 mg/kg curcumin or MEMM (30, 100 and 300mg/kg)) for 30 min followed by the topical application of tumour promoter (100µl croton oil). Tumors were examined weekly and the experiment lasted for 15 weeks.
RESULTS: MEMM and curcumin significantly (p<0.05) reduced the tumour burden, tumour incidence and tumour volume, which were further supported by the histopathological findings.
CONCLUSION: MEMM demonstrated chemoprevention possibly via its antioxidant and anti-inflammatory activities, and the action of flavonoids like quercitrin.

Matched MeSH terms: Skin Neoplasms/chemically induced
Fulltext Chemopreventive evaluation of a Schiff base derived copper (II) complex against azoxymethane-induced colorectal cancer in rats

Hajrezaie M, Hassandarvish P, Moghadamtousi SZ, Gwaram NS, Golbabapour S, Najihussien A, et al.

PLoS One, 2014;9(3):e91246.
PMID: 24618844 DOI: 10.1371/journal.pone.0091246

Based on the potential of Schiff base compounds to act as sources for the development of cancer chemotherapeutic agents, this in vivo study was performed to investigate the inhibitory properties of the synthetic Schiff base compound Cu(BrHAP)2 on colonic aberrant crypt foci (ACF).

Matched MeSH terms: Colorectal Neoplasms/chemically induced
Chemopreventive potential of Annona muricata L leaves on chemically-induced skin papillomagenesis in mice

Hamizah S, Roslida AH, Fezah O, Tan KL, Tor YS, Tan CI

Asian Pac J Cancer Prev, 2012;13(6):2533-9.
PMID: 22938417

Annona muricata L (Annonaceae), commonly known as soursop has a long, rich history in herbal medicine with a lengthy recorded indigenous use. It had also been found to be a promising new anti-tumor agent in numerous in vitro studies. The present investigation concerns chemopreventive effects in a two-stage model of skin papillomagenesis. Chemopreventive effects of an ethanolic extract of A. muricata leaves (AMLE) was evaluated in 6-7 week old ICR mice given a single topical application of 7,12-dimethylbenza(α)anthracene (DMBA 100 μg/100 μl acetone) and promotion by repeated application of croton oil (1% in acetone/ twice a week) for 10 weeks. Morphological tumor incidence, burden and volume were measured, with histological evaluation of skin tissue. Topical application of AMLE at 30, 100 and 300 mg/kg significantly reduced DMBA/croton oil induced mice skin papillomagenesis in (i) peri-initiation protocol (AMLE from 7 days prior to 7 days after DMBA), (ii) promotion protocol (AMLE 30 minutes after croton oil), or (iii) both peri-initiation and promotion protocol (AMLE 7 days prior to 7 day after DMBA and AMLE 30 minutes after croton oil throughout the experimental period), in a dose dependent manner (p<0.05) as compared to carcinogen-treated control. Furthermore, the average latent period was significantly increased in the AMLE-treated group. Interestingly, At 100 and 300 mg/ kg, AMLE completely inhibited the tumor development in all stages. Histopathological study revealed that tumor growth from the AMLE-treated groups showed only slight hyperplasia and absence of keratin pearls and rete ridges. The results, thus suggest that the A.muricata leaves extract was able to suppress tumor initiation as well as tumor promotion even at lower dosage.

Matched MeSH terms: Skin Neoplasms/chemically induced
Combination of zerumbone and cisplatin to treat cervical intraepithelial neoplasia in female BALB/c mice

Abdul AB, Abdelwahab SI, Bin Jalinas J, Al-Zubairi AS, Taha MM

Int. J. Gynecol. Cancer, 2009 Aug;19(6):1004-10.
PMID: 19820360 DOI: 10.1111/IGC.0b013e3181a83b51

Recent in vitro and in vivo studies have demonstrated that zerumbone (ZER) possesses anticancer properties. The main objective of this study was to examine the effectiveness of the combination of ZER and cisplatin (CIS) to treat cervical intraepithelial neoplasia (CIN) in vivo. Microculture tetrazolium assay and immunohistochemistry of proliferating cellular nuclear antigen were used to study the antitumor effect of ZER. Prenatally exposed female BALB/c mice were used as a model. The progenies with CIN were injected peritoneally with isotonic sodium chloride solution (positive control), CIS, ZER, and a combination of both compounds. All treated and untreated mice were humanely killed, and serum and cervix were obtained for interleukin 6 analysis and histopathologic studies using hematoxylin and eosin staining, respectively. Zerumbone has revealed an antitumor effect on human cervical cancer cells and downregulates immunoexpression of proliferating cellular nuclear antigen (P < 0.05). In vivo study indicates that ZER at 16 mg/kg and CIS at 10 mg/kg have a regressing effect on CIN. The combination of ZER and CIS also showed similar effectiveness in regressing CIN. Our results indicate that the combination of ZER and CIS has modulated the serum level of interleukin 6 when compared with that in mice treated with isotonic sodium chloride solution (P < 0.05). The effectiveness of combining ZER and CIS could be further explored as a new therapeutic intervention of early precancerous stages of carcinogenesis before the invasive stage begins.

Matched MeSH terms: Uterine Cervical Neoplasms/chemically induced
Cyclophosphamide-induced transitional cell carcinoma of bladder in lupus nephritis

Chow SK, Looi LM, Loh CS, Yeap SS

Intern Med J, 2002 Mar;32(3):114-6.
PMID: 11885838 DOI: 10.1046/j.1445-5994.2002.d01-29.x
Matched MeSH terms: Urinary Bladder Neoplasms/chemically induced*
Dietary cocoa protects against colitis-associated cancer by activating the Nrf2/Keap1 pathway

Pandurangan AK, Saadatdoust Z, Esa NM, Hamzah H, Ismail A

Biofactors, 2015 Jan-Feb;41(1):1-14.
PMID: 25545372 DOI: 10.1002/biof.1195

Colorectal cancer (CRC) is the third most common malignancy in males and the second most common cancer worldwide. Chronic colonic inflammation is a known risk factor for CRC. Cocoa contains many polyphenolic compounds that have beneficial effects in humans. The objective of this study is to explore the antioxidant properties of cocoa in the mouse model of azoxymethane (AOM)/dextran sulfate sodium (DSS)-induced colitis-associated cancer, focusing on the activation of Nrf2 signaling. Mice were treated with AOM/DSS and randomized to receive either a control diet or a 5 and 10% cocoa diet during the study period. On day 62 of the experiment, the entire colon was processed for biochemical and histopathological examination and further evaluations. Increased levels of malondialdehyde (MDA) were observed in AOM/DSS-induced mice; however, subsequent administration of cocoa decreased the MDA. Enzymatic and nonenzymatic antioxidants, such as superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase, were decreased in the AOM/DSS mice. Cocoa treatment increases the activities/levels of enzymatic and nonenzymatic antioxidants. Inflammatory mediators, such as inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2, were elevated during AOM/DSS-induction, and treatment with 5 and 10% cocoa effectively decreases the expression of iNOS and COX-2. The NF-E2-related factor 2 and its downstream targets, such as NQO1 and UDP-GT, were increased by cocoa treatment. The results of our study suggest that cocoa may merit further clinical investigation as a chemopreventive agent that helps prevent CAC.

Matched MeSH terms: Colorectal Neoplasms/chemically induced
Fulltext Dietary flavonoid intake and colorectal cancer risk in the European prospective investigation into cancer and nutrition (EPIC) cohort

Zamora-Ros R, Barupal DK, Rothwell JA, Jenab M, Fedirko V, Romieu I, et al.

Int J Cancer, 2017 Apr 15;140(8):1836-1844.
PMID: 28006847 DOI: 10.1002/ijc.30582

Flavonoids have been shown to inhibit colon cancer cell proliferation in vitro and protect against colorectal carcinogenesis in animal models. However, epidemiological evidence on the potential role of flavonoid intake in colorectal cancer (CRC) development remains sparse and inconsistent. We evaluated the association between dietary intakes of total flavonoids and their subclasses and risk of development of CRC, within the European Prospective Investigation into Cancer and Nutrition (EPIC) study. A cohort of 477,312 adult men and women were recruited in 10 European countries. At baseline, dietary intakes of total flavonoids and individual subclasses were estimated using centre-specific validated dietary questionnaires and composition data from the Phenol-Explorer database. During an average of 11 years of follow-up, 4,517 new cases of primary CRC were identified, of which 2,869 were colon (proximal = 1,298 and distal = 1,266) and 1,648 rectal tumours. No association was found between total flavonoid intake and the risk of overall CRC (HR for comparison of extreme quintiles 1.05, 95% CI 0.93-1.18; p-trend = 0.58) or any CRC subtype. No association was also observed with any intake of individual flavonoid subclasses. Similar results were observed for flavonoid intake expressed as glycosides or aglycone equivalents. Intake of total flavonoids and flavonoid subclasses, as estimated from dietary questionnaires, did not show any association with risk of CRC development.

Matched MeSH terms: Colorectal Neoplasms/chemically induced
Dietary intake of aflatoxins in the adult Malaysian population - an assessment of risk

Chin CK, Abdullah A, Sugita-Konishi Y

Food Addit Contam Part B Surveill, 2012;5(4):286-94.
PMID: 24786411 DOI: 10.1080/19393210.2012.713028

Exposure to aflatoxins in the adult Malaysian diet was estimated by analysing aflatoxins in 236 food composites prepared as "ready for consumption". Dietary exposure to aflatoxin B1 (AFB1) ranged from 24.3 to 34.00 ng/kg b.w./day (lower to upper bound), with peanuts being the main contributor. Estimated liver cancer risk from this exposure was 0.61-0.85 cancers/100,000 population/year, contributing 12.4%-17.3% of the liver cancer cases. Excluding AFB1 occurrence data higher than 15 µg/kg reduced exposure by 65%-91% to 2.27-11.99 ng/kg b.w./day, reducing the cancer risk to 0.06-0.30 cancers/100,000 population/year (contributing 1.2%-6.1% liver cancer cases). Reducing further the ML of AFB1 from 15 to 5 µg/kg yielded 3%-7% greater drop in the exposure to 0.47-10.26 ng/kg b.w./day with an estimated risk of 0.01-0.26 cancers/100,000 population/year (0.2%-5.1% liver cancer cases attributed to dietary AFB1). These findings indicate that current MLs are adequate in protecting Malaysians' health.

Matched MeSH terms: Liver Neoplasms/chemically induced*
Fulltext Disruptive environmental chemicals and cellular mechanisms that confer resistance to cell death

Narayanan KB, Ali M, Barclay BJ, Cheng QS, D'Abronzo L, Dornetshuber-Fleiss R, et al.

Carcinogenesis, 2015 Jun;36 Suppl 1:S89-110.
PMID: 26106145 DOI: 10.1093/carcin/bgv032

Cell death is a process of dying within biological cells that are ceasing to function. This process is essential in regulating organism development, tissue homeostasis, and to eliminate cells in the body that are irreparably damaged. In general, dysfunction in normal cellular death is tightly linked to cancer progression. Specifically, the up-regulation of pro-survival factors, including oncogenic factors and antiapoptotic signaling pathways, and the down-regulation of pro-apoptotic factors, including tumor suppressive factors, confers resistance to cell death in tumor cells, which supports the emergence of a fully immortalized cellular phenotype. This review considers the potential relevance of ubiquitous environmental chemical exposures that have been shown to disrupt key pathways and mechanisms associated with this sort of dysfunction. Specifically, bisphenol A, chlorothalonil, dibutyl phthalate, dichlorvos, lindane, linuron, methoxychlor and oxyfluorfen are discussed as prototypical chemical disruptors; as their effects relate to resistance to cell death, as constituents within environmental mixtures and as potential contributors to environmental carcinogenesis.

Matched MeSH terms: Neoplasms/chemically induced*
Distinctive features of advancing breast cancer cells and interactions with surrounding stroma observed under the scanning electron microscope

Jaafar H, Sharif SE, Murtey MD

Asian Pac J Cancer Prev, 2012;13(4):1305-10.
PMID: 22799323

Breast cancer cells undergo transformation when they spread into surrounding tissues. Studies have shown that cancer cells undergo surface alterations and interact with the surrounding microenvironment during the invasion process. The aim of the present study was to analyse these cancer cell surface alterations and interactions of cancer cells and stroma. Twenty 1-methyl-1-nitrosourea-induced breast cancer samples taken from five rats were fixed in McDowell-Trump fixative and then washed in 0.1 M phosphate buffer. The samples were then treated with osmium tetroxide before being washed in distilled water and subsequently dehydrated through graded ethanols. The dehydrated samples were immersed in hexamethyldisilazane (HMDS), then following removal of excess HMDS, the samples were air dried at room temperature in a dessicator. The dried samples were mounted onto specimen stubs and coated with gold coater before being viewed under a scanning electron microscope. We detected the presence of membrane ruffles on the surface of cancer cells and the formation of unique surface membrane protrusions to enhance movement and adhesion to the surrounding stroma during the process of invasion. Advancing cancer cells demonstrated formation of lamellipodia and invadopodia. The stroma at the advancing edge was desmoplastic with many collagen fibres laid down near the cancer cells. Our data suggest that all of these abnormalities could act as hallmarks of invasiveness for breast cancer.

Matched MeSH terms: Breast Neoplasms/chemically induced
Effect of ovariectomy and sex hormones replacement on tumour marker enzymes under administration of chemical carcinogens in the rat

Zarida H, Wan Zurinah WN, Zanariah J, Michael LK, Khalid BA

Exp. Toxicol. Pathol., 1994 Mar;46(1):31-6.
PMID: 7916223

The effect of ovariectomy and sex hormone/s replacement in female rats was investigated by the determination of the tumour marker enzymes gamma-glutamyltranspeptidase (GGT) and alkaline phosphatase (ALP). This was compared to ovariectomized rats receiving sex hormone replacement and treated with carcinogen. Ovariectomy significantly increased the activity of plasma GGT. Plasma and microsomal ALP and microsomal GGT were unchanged. When replacements of estrogen (E), or progesterone (Prog), or combinations of both estrogen and progesterone were given to ovariectomized rats, the activity of plasma GGT was brought to the level of normal intact females. Treatment with carcinogen increased the PGGT activities in intact rats. In ovariectomized rats receiving carcinogen, the PGGT activities were significantly lower than in intact females and rats receiving both hormone replacement and carcinogen (p < 0.01). Carcinogen treatment in case of estrogen or progesterone replacement, either individually or in combination, showed GGT activities comparable to intact females receiving carcinogen. Both plasma and microsomal ALP were not affected by carcinogen administration. These results showed that ovariectomy reduced the severity of hepatocarcinogenesis while sex hormone replacement worsened the process.

Matched MeSH terms: Liver Neoplasms/chemically induced*
Effects of different mycotoxins on humans, cell genome and their involvement in cancer (Review)

Ahmed Adam MA, Tabana YM, Musa KB, Sandai DA

Oncol Rep, 2017 Mar;37(3):1321-1336.
PMID: 28184933 DOI: 10.3892/or.2017.5424

The chemical nature of most of the mycotoxins makes them highly liposoluble compounds that can be absorbed from the site of exposure such as from the gastrointestinal and respiratory tract to the blood stream where it can be dissimilated throughout the body and reach different organs such as the liver and kidneys. Mycotoxins have a strong tendency and ability to penetrate the human and animal cells and reach the cellular genome where it causes a major mutagenic change in the nucleotide sequence which leads to strong and permanent defects in the genome. This defect will eventually be transcribed, translated and lead to the development of cancer. In this review, the chemical and physical nature of mycotoxins, the action of mycotoxins on the cellular genome and its effect on humans, mycotoxins and their carcinogenicity and mycotoxins research gaps are discussed, and new research areas are suggested. The research review posed various questions. What are the different mycotoxins that can cause cancer, what is the role of mycotoxins in causing cancer and what types of cancers can be caused by mycotoxins? These questions have been selected due to the significant increase in the mycotoxin contamination and the cancer incidence rate in the contemporary world. By revealing and understanding the role of mycotoxins in developing cancer, measures to reduce the risks and incidents of cancer could be taken.

Matched MeSH terms: Neoplasms/chemically induced
Fulltext Endometrial carcinoma can develop in patients on tamoxifen therapy

Omar SZ, Sivanesaratnam V

Med J Malaysia, 1999 Jun;54(2):280-2.
PMID: 10972045
Matched MeSH terms: Endometrial Neoplasms/chemically induced*
Fulltext Environmental immune disruptors, inflammation and cancer risk

Thompson PA, Khatami M, Baglole CJ, Sun J, Harris SA, Moon EY, et al.

Carcinogenesis, 2015 Jun;36 Suppl 1:S232-53.
PMID: 26106141 DOI: 10.1093/carcin/bgv038

An emerging area in environmental toxicology is the role that chemicals and chemical mixtures have on the cells of the human immune system. This is an important area of research that has been most widely pursued in relation to autoimmune diseases and allergy/asthma as opposed to cancer causation. This is despite the well-recognized role that innate and adaptive immunity play as essential factors in tumorigenesis. Here, we review the role that the innate immune cells of inflammatory responses play in tumorigenesis. Focus is placed on the molecules and pathways that have been mechanistically linked with tumor-associated inflammation. Within the context of chemically induced disturbances in immune function as co-factors in carcinogenesis, the evidence linking environmental toxicant exposures with perturbation in the balance between pro- and anti-inflammatory responses is reviewed. Reported effects of bisphenol A, atrazine, phthalates and other common toxicants on molecular and cellular targets involved in tumor-associated inflammation (e.g. cyclooxygenase/prostaglandin E2, nuclear factor kappa B, nitric oxide synthesis, cytokines and chemokines) are presented as example chemically mediated target molecule perturbations relevant to cancer. Commentary on areas of additional research including the need for innovation and integration of systems biology approaches to the study of environmental exposures and cancer causation are presented.

Matched MeSH terms: Neoplasms/chemically induced*
Fulltext Estimation of arecoline contents in commercial areca (betel) nuts and its relation to oral precancerous lesions

Awang MN

Singapore Med J, 1986 Aug;27(4):317-20.
PMID: 3798144

Areca catechu (betel) nut is widely used as a chewing agent. The nut alkaloids have been implicated in the pathogenesis of oral precancerous lesions. Quantitative analysis of the chloroform extracts by gas-liquid chromatography of ten commercial nut samples from Bombay have shown a wide variations In their arecoline contents (0% - 1.4%; mean: 0.7%). Nut samples of Identical processing method also vary in their arecoline levels. These variations were suggested to be due to the difference In the raw materials and processing methods. Comparisons were made between the arecoline contents and the Incidence of oral precancerous lesions from the present studies and also from those of Kerala and Mysore. It was concluded that the difference in nut arecoline contents not only reflect their appeal, potency but also influence upon the incidence of these diseases.

Matched MeSH terms: Mouth Neoplasms/chemically induced*
Fulltext Evaluation of chemopreventive effects of Acanthus ilicifolius against azoxymethane-induced aberrant Crypt Foci in the rat colon

Almagrami AA, Alshawsh MA, Saif-Ali R, Shwter A, Salem SD, Abdulla MA

PLoS One, 2014;9(5):e96004.
PMID: 24819728 DOI: 10.1371/journal.pone.0096004

Acanthus ilicifolius, a mangrove medicinal plant, is traditionally used to treat a variety of diseases. The aim of this research is to assess the chemoprotective outcomes of A. ilicifolius ethanolic extract against azoxymethane (AOM) induced colonic aberrant crypt foci (ACF) in rats.

Matched MeSH terms: Colonic Neoplasms/chemically induced
Exploring cancer development in adulthood: cholinesterase depression and genotoxic effect from chronic exposure to organophosphate pesticides among rural farm children

How V, Hashim Z, Ismail P, Md Said S, Omar D, Bahri Mohd Tamrin S

J Agromedicine, 2014;19(1):35-43.
PMID: 24417530 DOI: 10.1080/1059924X.2013.866917

Children are the vulnerable group in the agricultural community due to their early exposure to pesticides through the dynamic interplay between genetic predisposition, environment, and host-related factors. This study aims to identify the possible association between the depression in blood cholinesterase level and genotoxic effect among farm children. The results of micronuclei assay and comet assay showed that the reduced blood cholinesterase level from organophosphate pesticide exposure is significantly associated with an increase in chromosome breakage and DNA strand breaks. These genotoxicity end points suggest that farm children's cells experience early DNA damage that may lead to uncontrolled cell proliferation during their adulthood. Thus, farm children who grow up near pesticide-treated farmland have a higher probability of developing cancer than children with minimal or zero exposure to pesticides.

Matched MeSH terms: Neoplasms/chemically induced*
Fertility control and the risk of gynecological malignancies

Sivanesaratnam V

Obstet Gynecol Surv, 1991 Mar;46(3):131-7.
PMID: 1849623
Matched MeSH terms: Breast Neoplasms/chemically induced*; Trophoblastic Neoplasms/chemically induced
Gene expression in human oral squamous cell carcinoma is influenced by risk factor exposure

Cheong SC, Chandramouli GV, Saleh A, Zain RB, Lau SH, Sivakumaren S, et al.

Oral Oncol, 2009 Aug;45(8):712-9.
PMID: 19147396 DOI: 10.1016/j.oraloncology.2008.11.002

Oral squamous cell carcinoma (OSCC) is a world health problem and is associated with exposure to different risk factors. In the west, smoking and alcohol consumption are considered to be the main risk factors whilst in India and southeast Asia, betel quid (BQ) chewing is predominant. In this study, we compared the gene expression patterns of oral cancers associated with BQ chewing to those caused by smoking using Affymetrix microarrays. We found that 281 genes were differentially expressed between OSCC and normal oral mucosa regardless of aetiological factors including MMP1, PLAU, MAGE-D4, GNA12, IFITM3 and NMU. Further, we identified 168 genes that were differentially expressed between the BQ and smoking groups including CXCL-9, TMPRSS2, CA12 and RNF24. The expression of these genes was validated using qPCR using independent tissue samples. The results demonstrate that whilst common genes/pathways contribute to the development of oral cancer, there are also other gene expression changes that are specific to certain risk factors. The findings suggest that different carcinogens activate or inhibit specific pathways during cancer development and progression. These unique gene expression profiles should be taken into consideration when developing biomarkers for future use in prognostic or therapeutic applications.

Matched MeSH terms: Mouth Neoplasms/chemically induced

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