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Abstract : Inflammation and Cancer: Critical View
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Abstract: Inflammation is the physiological response to an injury, it could be chemical, thermal, physical and infectious for reparative activity to injury. Recent data suggest that chronic inflammation leads to cancer development. Inflammatory mediators released to surrounding environment due to inflammation by inflammatory cells acts as a defensive or offensive depends on secretion of chemical mediators of inflammation such as growth factors, cytokines activating various transcriptional pathways bring about cell proliferation, angiogenesis further leads to tumor growth. This article describe the role of inflammatory cells and its mediators to development of cancer, various underlying unanswered future challenge questions in association with inflammation and cancer. Keywords: TLR, PAMPs, DAMPs, TNF-α, IL-1β, IL-6, NF-KB, STAT-3, HIF-1α, TGF-β, Tumor associated macrophages, Tumor associated neutrophils. Download Full Article |
Abstract : Differences between 66 Chemical Element Contents in Normal and Cancerous Prostate
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Abstract: Prostate cancer is an internationally important health problem in man, particularly in developed countries. The aim of this exploratory study was to clarify the differences between the prostatic levels of chemical elements in patients with malignantly transformed prostate (PCa) and healthy male inhabitance. Prostatic tissue levels of 66 chemical elements were prospectively evaluated in 60 patients with PCa and 37 healthy males. Measurements were performed using a combination of five non-destructive and destructive analytical methods. A significant increase in the mean level of Ag, Al, Au, B, Ba, Be, Bi, Br, Ce, Cr, Cu, Dy, Er, Fe, Gd, Hg, Ho, Li, Mn, Nd, Ni, Pr, Sb, Si, Sm, Sn, Sr, Tb, Th, Ti, Tl, Tm, Y and Zr accompanied a decrease in the mean level of Ca, Cd, Co, K, Mg, Na, P, Rb, S, Sc, Se, and Zn was observed in the cancerous prostates. It was not found any differences in the mean prostatic level of other chemical elements including Cs, La, Mo, Nb, P, Pb, U, and Yb between PCa patients and healthy males. This work’s results reveal that in malignantly transformed prostate the chemical element metabolism is drastically disturbed. Keywords: Prostate cancer, prostatic chemical element contents, energy dispersive X-ray fluorescence analysis, neutron activation analysis, inductively coupled plasma atomic emission spectrometry, inductively coupled plasma mass spectrometry. |
Abstract : Prevalence of Precancerous Lesions among Positive HIV Women in the Hospital Complex and University of Yaounde (Cameroun)
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Abstract: In the year 2000, a wide campaign of screening and treatment of the dysplastic lesions of the cervix was initiated in Cameroun. The precancerous lesions of the cervix are the most important demonstration of gynecological infection by the AIDS. As these lesions remain little documented in Cameroun, we carried out a study which the goal was to determine the prevalence of the precancerous lesions among positive AIDS women. It is about a descriptive study with a retrospective collection of data carried out between 2010 and 2016 among 253 positive AIDS women having carried out a consultation in the Hospital complex and University of Yaounde aged from 18 to 80 years. The analysis of the data was essentially carried on: the age, clinical Factors data of risk of the precancerous lesions, anatomo-pathological search of precancerous lesion. AIDS status and/or the catch the antiretroviral one. The Software SPSS was used for the analysis of data. The test of Chi2 for the comparison of the variables. A variable was considered significant if P<0,05. 53 women presented precancerous lesions i.e. 20,94%. The lesions were in 92% of the squamous lesions with intra epithelial of low rank and in 8% of the squamous lesions with intra epithelial of high rank. 22 women (38%) were aged between 36 and 45 years; 22 women (40%) were housewives; 18 women (31%) were single people; 36 women (67%) were multipares; 45 women (85%) did not smoke; 33 women (62%) had a peak of CD4 located between 500-1000/mm3;14 women (26%) did not have opportunist diseases 10 women (19%) had the zona, 8 women (15%) of tuberculosis and 9 women (17%) suffered from HTA. Because of the high potential risk of precancerous lesions in our population of study, we recommend a regular clinical follow-up of the patients presenting high factors of risk, and a widened access to antiretroviral. Keywords: Precancerous lesions, AIDS, Prevalence. |
Abstract : In silico Meta-Analysis of Circulatory microRNAs in Prostate Cancer
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Abstract: Circulatory microRNAs (miRNAs) have emerged as a new class of non coding RNA molecules which regulate many crucial molecular and biological processes. We have aimed to shed light on the roles of circulatory miRNAs in Prostate Cancer (PCa) using an integrative in silico bioinformatics approach. We have described a new protocol for target prediction and functional analysis which was applied to 40 highly differentially dysregulatedcirculatory miRNAs in PCa. This framework comprises: (i) evidence of involvement of these circulatory miRNAs from previous literature and microarray analysis (ii) overlap of prediction results by target prediction tools, including miRTarBase, miRDB, DIANA- microT 4.0 and TargetScan (combining computational learning, alignment, interaction energy and statistical tests for minimization of false positives), (iii) gene ontology (GO) along with pathway enrichment analysis of the miRNA targets and their pathways and (iv) linking these pathways to oncogenesis and cancer hallmarks. More than 200 target genes and 40 regulatory pathways were retrieved and analysed which was followed by associating their roles with cancer hallmark processes. Wnt signalling, Cell cycle, MAPK signalling, Cadherin signalling, Integrin signalling and Ras pathways were some of the identified regulatory pathways during bioinformatics analysis. These signalling and developmental pathways crosstalk and regulate stem cell renewal thus indicating a definite role of circulatory miRNAs in PCa development. Our study identified miR-181, miR-9, Let-7 family, miR-26b circulatory miRNAs, to be contributing majorly in the oncogenic pathways, thus proposing their role as potential biomarkers in PCa initiation and progression. Keywords: Prostate Cancer, microRNA, Target prediction, Cancer hallmarks. |
