Search results

1

Intraoperative Colonoscopy in Obstructing Colon Cancer

100%

Rembiasz K., Kostarczyk W., Matłok M., Budzyński A., Pędziwiatr M., Bahyrycz J.

Polish Journal of Surgery

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2009

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vol. 81

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issue 12

635-640

EN

The aim of the study was to present our experience with the use of intraoperative colonoscopy in patients with obstructing colon cancer in whom complete preoperative colonoscopy was not possible.Material and methods. We treated 480 patients with colon cancer from 2002 to 2008 in our department. In 80 patients (28 female and 52 male) we performed intraoperative colonoscopy due to obstructing colon cancer. Mean age of female patients was 67.8 yrs. (35-84 yrs.) and mean age of male patients was 66.5 yrs. (38-81 yrs.). In all of the patients preoperative complete colonoscopy was not possible.Results. Thanks to intraoperative colonoscopy we revealed new synchronous cancer lesions in 7 patients (8.75%) and therefore we extended the operation. In 28 patients (35%) we revealed polyps which, in 24 (85.7%) cases, were removed endoscopically and in 4 cases we decided to extend the operation.Conclusions. Intraoperative colonoscopy is efficient method in diagnosis of colon cancer especially in patients with obstructing colon cancer. Thanks to intraoperative colonoscopy patients with synchronous lesions may benefit from detection of lesions and avoid further operation.

2

Development of a new, simple and cost-effective diagnostic tool for genetic screening of hereditary colorectal cancer - the DNA microarray assay

80%

Stojcev Z., Banasiewicz T., Kaszuba M., Sikorski A., Szczepkowski M., Bobkiewicz A., Paszkowski J., Krokowicz Ł., Biczysko M., Szmeja J., Jurkowska M., Majewski P., Mackiewicz A., Lamperska K., Drews M., Wojciechowski J.

Acta Biochimica Polonica

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2013

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vol. 60

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issue 2

195-198

EN

Detection of mutations in families with a hereditary predisposition to colon cancer gives an opportunity to precisely define the high-risk group. 36 patients operated on for colon cancer, with familiar prevalence of this malignancy, were investigated using the DNA microarrays method with the potential detection of 170 mutations in MLH1, MSH2, MSH6, CHEK2, and NOD2 genes. In microarrays analysis of DNA in 9 patients (25% of the investigated group), 6 different mutations were found. The effectiveness of genetic screening using the microarray method is comparable to the effectiveness of other, much more expensive and time-consuming methods.

3

Synchronous Occurrence of Colon and Appendiceal Adenocarcinoma

80%

Goryń T., Meszka M., Pawlak J.

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vol. 86

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issue 3

147-150

EN

The study presented two cases of synchronous occurrence of colon and appendiceal adenocarcinoma. Both patients required surgical intervention, due to acute peritonitis during the course of acute appendicitis. In case of one patient we performed abdominal CT confirming the presence of sigmoid cancer. The patient was subjected to appendectomy and Hartmann’s operation. The second patient underwent an appendectomy, and colonoscopy performed two months later revealed the presence of rectal adenocarcinoma. The patient was subjected to low anterior rectal resection. The histopathological results considering both patients revealed the presence of synchronous colon and appendiceal adenocarcinoma.

4

Hereditary Nonpolyposis Colorectal Cancer in Lower Silesia

80%

Stal A., Stembalska A., Śmigiel R., Tarkowski R., Grzebieniak Z., Sąsiadek M.

Polish Journal of Surgery

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2007

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vol. 79

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issue 3

182-189

EN

The aim of the study was to assess the frequency of hereditary nonpolyposus colorectal cancer in the Lower Silesia area.Material and methods. The study population consists of 318 patients hospitalized between 2001-2002 on 14 surgical wards in the Lower Silesia area. Patients formed four groups: hereditary nonpolyposis colorectal cancer (HNPCC), suspected HNPCC (S-HNPCC), familial colorectal cancer (FCC) and cancer familial aggregation (CFA). The epidemiological data were analyzed (age on onset, gender, localization, extracolonic tumors in family).Results. 3.77% of all patients with colorectal cancer (CRC) were diagnosed with HNPCC and 6.92% with S-HNPCC. The mean age of CRC onset in HNPCC group was 53.07; in the S-HNPCC group, 62.2. Seven male and 5 female patients were diagnosed with HNPCC; for S-HNPCC, 14 males and 8 females were diagnosed. In the HNPCC group, 55.55% of CRC were situated in the right colon and in 44.55%, the left colon. In the S-HNPCC group, 28.57% CRC was in the right colon and in 71.43%, the left colon. In the HNPCC and S-HNPCC groups, there were 4 patients diagnosed with synchronous sigmoid and rectal adenomas. Two of them were diagnosed during intraoperative colonoscopy. One patient was diagnosed with 3 metachronous lesions. In the families of 6 patients with HNPCC extracolonic tumors were identified.Conclusions. 1. Knowledge of HNPCC criteria ensures proper treatment of the patient and their family. 2. During colonoscopy, the whole colon should be inspected. 3. Patients suspected of HNPCC should undergo intraoperative colonoscopy.

5

Evaluation Of Antioxidant Defense In Patients With Colorectal Carcinoma

80%

Malinowska K., Mik M., Dziki Ł., Dziki A., Majsterek I.

Polish Journal of Surgery

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2015

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vol. 87

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issue 7

357-361

EN

Cancers are among the most feared diseases of modern civilization. In Poland, colorectal cancer is one of the tumors with the worst prognosis. The ability to cure is primarily dependent on the stage of the disease at the time of diagnosis. The aim of the study was evaluate antioxidant response in patients with colorectal carcinoma. Material and methods. Twenty patients (14 men and 6 women) aged 61.9± 11.1 years with colorectal cancer were included in the study. Twenty healthy subjects (4 men and 16 women) aged 64 ± 15.3 years formed the control group. The erythrocyte activities of antioxidant enzymes, superoxide dismutase (SOD), and glutathione peroxidase (GPx), Results. A significant increase of GPx, and SOD (p < 0.05) were seen in patients compared to healthy controls. Conclusion. The results indicate that the tested antioxidant enzyme activity of glutathione peroxidase and superoxide dismutase is increased in patients diagnosed with colorectal cancer compared to the control group.

6

Evaluation of immature monocyte-derived dendritic cells generated from patients with colorectal cancer

80%

Maciejewski R., Radej S., Furmaga J., Chrościcki A., Rudzki S., Roliński J., Wallner G.

Polish Journal of Surgery

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2013

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vol. 85

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issue 12

714-720

EN

Dendritic cells are heterogeneous population of the leukocytes and most potent APC in activation of naive T lymphocytes. Therefore the DCs generated in vitro are under research for their application in anti-tumor immunotherapy. The aim of the study was generation of the immature dendritic cells from peripheral blood monocytes collected from colorectal cancer patients and comparison of their ability to endocytosis, cytokine production and immunophenotype to DCs generated from healthy donors. Material and methods. 16 adenocarcinoma stage II patients were included in the study. Dendritic cells were generated in the presence of rhGM-CSF and IL-4. PBMC were isolated from the blood of patients and 16 healthy donors - control group. Immunophenotype, ability of endocytosis of Dextran- FITC as well as intracellular IL-12 expression of the generated dendritic cells was measured using flow cytometry. The cytokines (IL-6, IL-10, IL-12p70, IFN-γ) concentration in the supernatants of DCs culture was measured by ELISA. Results. The percentage of the immature dendritic cells and expression of CD206 and CD209 antigens was significantly higher in patients group (p <0.05 and p <0.001 respectively). Significantly (p <0.001) higher expression of the antigens which initiate the Th2 immune response (CD80-/CD86 + and B7-H2 + / CD209 +) was in the patients group. There were no differences in endocytosis ability and the cytokines (IL-6, IL-10, IL-12p70, IFN-γ) concentration between investigated groups. Conclusions. High immature markers expression on the generated dendritic cells together with identical endocytosis ability in patients group is advantageous in antitumor autologous cells immunotherapy planning. However there is one troubling fact - high expression of markers, which may induce tolerance to particular antigen. It seems to be more reasonable to use the autologous DCs in the antitumor immunotherapy, especially due to the incompatibility in allogenic cells in the context of HLA complex.

7

Case of A 46-Year-Old Woman With Cecum Adenocarcinoma Metastasis to The Right Pectoralis Major Muscle and Skin

80%

Stanisławski M., Gruszecki L., Pawlak J.

Polish Journal of Surgery

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2008

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vol. 80

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issue 3

153-156

EN

The authors present the case of a 46-year-old patient with colon adenocarcinoma and metastases to the right pectoralis major muscle and to the skin. We present the diagnostics and therapy performed on the patient, who was hospitalized from July to October 2006.

8

Lymphocyte labile iron pool, plasma iron, transferrin saturation and ferritin levels in colon cancer patients.

80%

Gackowski D., Kruszewski M., Banaszkiewicz Z., Jawien A., Olinski R.

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vol. 49

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issue 1

269-273

EN

Patients with colorectal carcinoma showed statistically significant lower values of transferrin saturation, total iron binding capacity and serum iron level as compared with control group, while the level of ferritin and the size of labile iron pool in carcinoma patients were higher, although this difference was not statistically significant. Our observations are in favour of the hypothesis which suggests that changes in iron metabolism restrict iron availability for tumour cells and as consequence, slow their growth.

9

Hereditary Breast Cancer and Hereditary Non-Polyposis Colorectal Cancer: Description of Two Families, as the Examples of Classical Hereditary Predisposition to Cancers

70%

Stembalska A., Bednarczyk D., Sąsiadek M.

Polish Journal of Surgery

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2009

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vol. 81

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issue 10

474-477

EN

The diagnosis of hereditary cancer syndromes is basing mainly on pedigree analysis and if possible on molecular studies. We present 2 families which were diagnosed with hereditary cancer syndromes. Family I - breast cancer syndrome; 9 breast cancer cases were diagnosed in women between 25 and 45-year-of-age from 4 generations. The BRCA1 5382insC mutation was found in family members. Family II - hereditary nonpolyposis colon cancer; altogether 17 cancers in 12 persons from 6 generations were diagnosed. The c. 256 C>T mutation in MLH1 gene was found in family members. Thus, written family genetic counselings were prepared for both families, including detail information concerning cancer risk for carriers and non-carriers of critical mutation in given family. In conclusion it was stated that an effective prevention dedicated to patients at high, hereditary risk of cancer could be achieved by early diagnosis and thus by highly targeted surveillance and managements.

10

Prebiotics and bioactive natural substances induce changes of composition and metabolic activities of the colonic microflora in cancerous rats

70%

Hijová E., Bomba A., Bertková I., Strojný L., Szabadosová V., Šoltésová A.

Acta Biochimica Polonica

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2012

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vol. 59

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issue 2

271-274

EN

Prebiotics are defined as selectively fermented food ingredients that induce specific changes in the composition and/or activity in the gastrointestinal microbiota beneficial to the host well-being and health. The aim of the presented experiment was to investigate the effect of a prebiotic applied alone or in combination with Hyppocastani extractum siccum, and Lini oleum virginale in rats with dimethylhydrazine induced colon cancer. Wistar albino rats were fed high fat diet supplemented with the prebiotic alone or in combination with Horse chestnut and flaxseed oil. The activity of faecal glycolytic enzymes, lipid parameters, bile acids, short chain fatty acids and counts of coliforms and lactobacilli were determined. Treatment with the prebiotic alone and in combination with selected substances significantly decreased the activity of glycolytic bacterial enzyme β-glucuronidase (P<0.001) and increased activities of β-galactosidase and β-glucosidase. Bile acids concentration was significantly decreased (P<0.01) except for the combination of the prebiotic with Horse chestnut. The prebiotic alone decreased the lipid parameters (P<0.001) and enhanced production of short chain fatty acids. Application of prebiotic and bioactive natural substances significantly reduced number of coliforms (P<0.05). Prebiotic alone significantly increased the count of lactobacilli (P<0.05). These results show that prebiotics have a protective effect and may be the useful for colon cancer prevention and treatment.

11

Immunomodelling Characteristics of Mature Dendritic Cells Stimulated by Colon Cancer Cells Lysates

70%

Radej S., Roliński J., Rawicz-Pruszyński K., Bury P., Borowski G., Furmaga J., Chrościcki A., Wallner G., Maciejewski R.

Polish Journal of Surgery

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2015

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vol. 87

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issue 2

71-82

EN

Application of cells with high TAA (tumor associated antigen) presentation potential seems to be crucial in neoplasia immunotherapy. Such feature is distributed in dendritic cells, which present peptides from processed TAA - MHC molecules complex to the T cells of a host. The aim of the study was to assess the influence of colon neoplasia tissue lysate on functioning of generated autologous DC’s in the field of autologous CD4+ lymphocytes immunological response towards Th1/Th2 under in vitro environment together with comparison and assessment of DCs’ immunosuppressive properties acquired from patients with colon cancer. Material and methods. The population of this study consisted of 16 healthy- controls, 36colon cancer patients. Blood samples were collected 24h before planned surgery and preventive antibiotic therapy. Neoplastic tissue sample, was digested for cell lysates preparation. DC’s generation from PBMC was carried out in standard conditionsand medium enriched with rhGM-CSF and rhIL-4. Mature DC`s and cocultured autologous CD4 lymphocytes immunophenotype assessment was analyzed with flow cytometer. Intracellular and culture medium cytokines concentration was analyzed with ELISA and FACS method. Results. DC`s generated from colon cancer patients stimulated with lysates presented greater maturity, lower expression of CD206 antigen, significantly higher expression of HLA-DR, CD208 and CD209 and high intracellular expression of IL-12, compared to non-stimulated cells. Conclusions. The neoplastic tissue in vivo produces a number of substances having an unfavorable effect on immune system, our results suggests using lysates as good dendritic cells stimulators that possibly could have application in colon cancer immunotherapy

12

Colorectal Cancer in Young and Elderly Patients

70%

Berut M., Mik M., Kędzia-Berut R., Kujawski R., Trzciński R., Dziki Ł., Dziki A.

Polish Journal of Surgery

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2013

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vol. 85

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issue 8

446-451

EN

The aim of the study was to answer the question whether there are differences in the progression of the disease and its morphology, dependent of the patient’s age, as well as show colorectal cancer differences between young and elderly patients. Material and methods. During the period between 2009 and 2011, 747 patients with rectal carcinoma, and 478 with colon cancer underwent surgery at the Department of General and Colorectal Surgery. The study group comprised patients under the age of 40 years (56 patients) and >80 years (90 patients). The following were subject to analysis: gender, tumor location, percentage of radical and palliative procedures, clinical and histopathological staging, as well the differences in the morphology of the tumor. The χ2 test and Yates’ correction were used for statistical analysis. p<0.05 was considered as statistically significant. Results. A higher incidence of rectal carcinoma was observed in younger patients (p=0.004). Amongst the younger patients 30.3% were diagnosed with stage III cancer, while 35.7% with stage IV. In case of elderly patients 30.6% were diagnosed with stage III cancer, while 30.7% with stage IV. In 53.3% of young patients, local lymph node metastases were observed, while in the elderly 41.8%. No statistically significant difference was observed, considering the total number of lymph nodes metastases. However, in case of stage N2, results were unfavorable for young patients 31.8% vs 17% in case of the elderly. Mucogenic adenocarcinoma incidence was similar in both groups. In case of patients< 40 years we observed a higher incidence of poorly differentiated tumors, as compared to the elderly patients (>80 years). Conclusions. 1. It is necessary to create appropriate prevention programs for young community, and improvement of public awareness in this age group. 2. Colorectal cancer (CRC) in young patients is often recognized in advanced stage. 3. A high percentage of unresectable tumors in group of elderly patients shows that CRC is still diagnosed too late in Poland.

13

The role of histopathological examination, therapeutic difficulties and thromboembolism treatment during palliative chemotherapy in patient with antithrombin deficiency, colon cancer and endometrial cancer

61%

Kryszczyszyn-Musialik K., Dolczak L., Słomian G.

OncoReview

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2017

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vol. 7

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issue 1

28-31

EN

Palliative chemotherapy in patients with thrombophilia is a challenge for clinical oncologists. On one hand the optimal treatment should be very safe for patient, on the other hand – as effective as possible. That therapy is also connected with proper thromboprophylaxis. The incidence of multiple cancers is a serious problem of modern oncology. In patients whose medical history includes two or more cancers, it is essential to obtain histopathological diagnosis before the administration of treatment of disseminated disease. It allows to avoid improper therapy which is often toxic. The article presents the case of a patient with antithrombin deficiency and two cancers in medical history: colon cancer and endometrial cancer. The treatment of the patient because of the metastatic cancer was started after the histopathological diagnosis. In metastatic lymph node the endometrial cancer was recognized. The carboplatin and paclitaxel were used in the therapy. The treatment was conducted in four course chemotherapy. It revealed considerable polyneuropathy and hematologic toxicity limiting from further therapy. Treatment allowed to obtain biochemical response, decrease of metastases and the condition of a patient improved. During the systemic therapy thromboprophylaxis with acenocumarol was used. The incidence of venous thromboembolism or bleeding complications were not noticed.

14

Knowledge and Awareness of Colorectal Cancer

61%

Lewandowski M., Lipiński P., Bednarski I., Mik M., Dziki A.

Polish Journal of Surgery

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2020

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vol. 92(2)

34-41

EN

Introduction: Colorectal cancer (CRC) is the third most common malignancy in men and the second most common in women. The disease constitutes a significant civilization and social problem. The aim: The aim of the study is to assess the sudy group’s awareness and knowledge about CRC, as well as about its diagnostics and treatment. Material and methods: An online questionaire form was distributed in the study group regarding issues related to CRC, and followed by statistical analysis and interpretation of the obtained survey results. Results: After analysis, we found that a significant percentage of the surveyed sample group had basic knowledge and awareness in the area of CRC, whereas about half of the respondents did not consider themselves sufficiently informed about the disease. Conclusions: Considering the scale of the problem posed by CRC, it is necessary to undertake broader action to promote knowledge about this disease and to carry out this type of research on a larger and more socioeconomically diverse population.

15

Rola mesalazyny w chemoprewencji raka jelita grubego

51%

Wasilewski A., Cygankiewicz A.

Folia Medica Lodziensia

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2014

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vol. 41

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issue 2

121-137

EN

Colorectal cancer (CRC) is the fourth most commonly diagnosed cancer in females and the third in males. Every year there are more than a million new cases of colorectal cancer and more than six hundred thousand patients die. The risk factors of colorectal cancer include unhealthy lifestyle, genetic predisposition (found in about 25% of cases) and chronic colon inflammation i.e., ulcerative colitis and Crohn's disease. Many studies suggested the protective effect of nonsteroidal anti-inflammatory drugs, including mesalazine, on the chemoprevention of colorectal cancer. Studies have shown that the regular intake of mesalazine reduces the risk of developing colorectal polyps and cancer by its multidirectional action. Anti-inflammatory mechanisms include the modulation of inflammatory cytokine production, COX inhibition and impact on NF-κB and PPARδ pathways. Consequently, mesalazine inhibits, or at least delays, the processes of carcinogenesis.

PL

Rak jelita grubego (RJG) jest czwartym najczęściej rozpoznawanym rakiem u kobiet i trzecim u mężczyzn. Każdego roku stwierdza się ponad milion nowych zachorowań i ponad sześćset tysięcy zgonów z powodu RJG. Do czynników ryzyka RJG zalicza się niezdrowy styl życia, predyspozycje genetyczne (stwierdzane w około 25% przypadków zachorowań) oraz choroby zapalne jelit. Wśród pacjentów z wrzodziejącym zapaleniem jelita grubego i chorobą Leśniowskiego-Crohna występuje podwyższone ryzyko zachorowania na RJG. Wiele badań wykazało ochronne działanie niesteroidowych leków przeciwzapalnych, w tym mesalazyny, w chemoprewencji raka jelita grubego. Badania wykazały, że regularne przyjmowanie mesalazyny - dzięki jej wielokierunkowemu działaniu - powodowało redukcję rozwoju polipów jelita grubego i transformacji nowotworowej komórek jelita grubego. Przeciwzapalne mechanizmy działania mesalazyny polegają na modulowaniu produkcji cytokin zapalnych, hamowaniu cyklooksygenazy oraz odziaływaniu na szlaki sygnałowe z udziałem czynnika transkrypcyjnego NF-κB i receptorów PPARδ. W konsekwencji mesalazyna hamuje, bądź przynajmniej opóźnia, procesy nowotworzenia.

16

The effects of peroxisome proliferator-activated receptor gamma agonists and fluorouracil on Colon 38 cancer growth in vitro

51%

Beda-Maluga K., Fuss-Chmielewska J., Świętosławski J., Winczyk K.

Folia Medica Lodziensia

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2011

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vol. 38

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issue 2

227-243

EN

Introduction: Colon cancer is a very serious medical problem in Europe and also in Poland. For many years fluorouracil has been used as a main agent in chemotherapy, but its effectiveness is not sufficient. Recently several modern drugs were introduced in the treatment of colon cancer and also various of therapeutic options have been tested but the survival time of patients with cancer has not been extended significantly. For that reason more efficient drugs have still been looked for. One of the potential anticancer drugs are thiazolidinediones (TZDs) – agonists of peroxisome proliferator-activated receptors gamma (PPARγ) which in the last years were used in diabetes treatment. Therefore, we decided to examine the effect of two TZDs – pioglitazone (PIO) and rosiglitazone (ROS) on the growth of murine colon cancer and to compare their action with the efficacy of routinely used fluorouracil (FU). Furthermore, we evaluated the PPARγ expression in colon cancer cells by using the immunocytochemical method. Material and methods: Cell line of murine cancer – Colon 38 was used in our experiment. The growth of cancer cells was assessed by using EZ4Y kit based on the modified colorimetric Mosmann method. In 24 and 48 h cell culture the effects of ROS and PIO at concentrations 10-4, 10-5, 10-6, 10-7 M and FU at concentrations 4 x 10-6 and 10-6 M were examined. Immunochistochemistry was performed with the use of murine specific polyclonal antibodies anti-PPARγ1,2 and the streptavidin-biotin-peroxidase method. Results: The immunopositive reaction for PPARγ was shown in the nuclei of Colon 38 cells. Both, the examined TZDs and fluorouracil significantly decreased the growth of colon cancer and their efficacy was dependent on the concentration of examined compounds and also the incubation time. Rosiglitazone, in all used concentrations, acted more strongly than PIO. Fluorouracil showed anti-cancer activity only in 48 h culture and its inhibitory effect was weaker than both TZDs at the highest concentration (10-4 M). Conclusions: Our data indicate that PPARγ agonists, especially rosiglitazone, inhibit the growth of Colon 38 cancer. However, the potential usefulness of rosiglitazone and pioglitazone for the chemoprevention and treatment of colon cancer requires further studies.

PL

Wstęp: Rak jelita grubego stanowi poważny problem medyczny zarówno w Polsce, jak i w całej Europie. Przez wiele lat jako główny chemioterapeutyk stosowano fluorouracyl, niestety jego skuteczność okazała się niewystarczająca. Zastosowanie w terapii raka jelita grubego nowych leków i różnych opcji terapeutycznych nie wydłużyło istotnie czasu przeżycia pacjentów. Z tego powodu nadal poszukiwane są bardziej skuteczne formy leczenia. Związkami o potencjalnym działaniu przeciwnowotworowym są tiazolidinediony (TZDs) – agoniści receptorów gamma aktywowanych proliferatorami peroksysomów (PPARγ), które w ostatnich latach wykorzystywano w leczeniu cukrzycy. W związku z tym, w pracy oceniono wpływ dwóch TZDs – pioglitazonu (PIO) i roziglitazonu (ROS) na wzrost mysiego raka jelita grubego, a ich działanie porównano ze skutecznością fluorouracylu (FU). Ponadto w komórkach raka jelita grubego metodą immunohistochemiczną oceniono ekspresję PPARγ. Materiał i metody: Badanie przeprowadzono na linii komórkowej mysiego raka jelita grubego – Colon 38. Wzrost komórek nowotworowych mierzono za pomocą zestawu EZ4Y opartego na metodzie kolorymetrycznej Mosmann’a. W hodowli 24- i 48-godzinnej oceniono wpływ ROS i PIO w stężeniach 10-4, 10-5, 10-6, 10-7 M, a działanie fluorouracylu w stężeniach 4 x 10-6 i 10-6 M. W badaniu immunohistochemicznym wykorzystano mysie poliklonalne przeciwciała anty-PPARγ1,2 i streptawidynowo-biotynowo-peroksydazową metodę wizualizacji. Wyniki: W komórkach raka Colon 38 wykazano immunopozytywny jądrowy odczyn dla PPARγ. Badane TZDs i fluorouracyl znacząco zahamowały wzrost raka jelita grubego, a ich skuteczność zależna była od stężenia i czasu inkubacji. Działanie ROS było silniejsze niż PIO we wszystkich użytych stężeniach. Przeciwnowotworowe działanie fluorouracylu stwierdzono po 48 godzinach inkubacji, jednakże jego efekt był słabszy niż wpływ TZDs w najwyższym badanym stężeniu (10-4 M). Wnioski: Uzyskane wyniki wskazują, że agoniści receptorów PPARγ, a w szczególności roziglitazon, hamują wzrost raka Colon 38. Jednakże wykorzystanie roziglitazonu i pioglitazonu w leczeniu raka jelita grubego wymaga dalszych badań.

17

Suppression of ID1 expression in colon cancer cells increases sensitivity to 5-fluorouracil

51%

Przybyła T., Sakowicz-Burkiewicz M., Maciejewska I., Bielarczyk H., Pawełczyk T.

Acta Biochimica Polonica

|

2017

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vol. 64

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issue 2

315-322

EN

Adjuvant chemotherapy with 5-fluorouracil remains the basic treatment for patients with advanced colorectal carcinoma. The major obstacle in successful treatment is the ability of CRC cells to acquire chemoresistance. Here we examined the impact of ID1 silencing on the sensitivity of CRC cells to 5-FU. To suppress ID1 expression in HT-29 and HCT-116 cells the cells were transduced with a lentiviral vector carrying the ID1 silencing sequence. Cells with silenced ID1 showed altered expression of epithelial and mesenchymal markers and exhibited increased proliferation rate compared to the parental cells. HCT-116 cells with suppressed ID1 became sensitized to 5-FU and this was not observed in HT-29 cells. Silencing ID1 resulted in altered expression of genes encoding enzymes metabolizing 5-FU. HT-29 cells with suppressed ID1 had significantly reduced mRNA level for thymidine phosphorylase, uridine-cytydine kinase 2 and dihydropyrimidine dehydrogenase. ID1 suppression in HCT-116 cells resulted in an increase of mRNA level for thymidine phosphorylase, thymidine kinase and uridine-cytydine kinase 2 with concurrent drop of dihydropyrimidine dehydrogenase and thymidylate synthetase mRNA levels. In conclusion, ID1 expression impacts the sensitivity of colon cancer cells to 5-FU and may be considered as a potential predictive marker in CRC treatment.

18

Colon cancer – new strategies of treatment

41%

Międzybrodzka A., Gmyrek J., Cieślar G., Kawczyk-Krupka A.

Annales Academiae Medicae Silesiensis

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2019

|

issue 73

266-273

EN

Colon cancer is one of the most frequent causes of death in the world. Despite the easily accessible diagnostic tools, the disease is still diagnosed at its advanced stage, when radical treatment is no longer possible and only palliative therapy can be provided. Cancer recurrence, which worsens the patient’s prognosis, is a separate problem. Currently, scientists are seeking modern, multidirectional treatment methods, which would enable the inhibition of neoplasia, elongation of patients’ lives and improvement in their quality. Immunotherapy and photodynamic therapy seem to be promising as they provide good results, also at advanced stages of cancer. Due to its cytotoxic and immunomodulating effect, photodynamic therapy exhibits an antineoplastic effect. Using monoclonal antibodies in the targeted therapy of colon cancer is a new, promising concept, which requires further studies.

PL

Rak jelita grubego jest jedną z najczęstszych przyczyn zgonów na świecie. Pomimo łatwo dostępnych narzędzi diagnostycznych nadal często rozpoznawany jest w stadium zaawansowanym, kiedy niejednokrotnie nie ma już możliwości leczenia radykalnego i pozostaje jedynie terapia paliatywna. Odrębnym problemem jest wznowa nowotworu, pogarszająca rokowanie pacjenta. Współcześnie poszukuje się nowoczesnych, wielokierunkowych metod leczniczych, które pozwoliłyby zahamować proces nowotworzenia, wydłużyć życie chorych i poprawić jego jakość. Obiecującym kierunkiem badań okazują się immunoterapia oraz terapia fotodynamiczna, które dają pomyślne wyniki również w zaawansowanych stadiach raka. Terapia fotodynamiczna wykazuje działanie przeciwnowotworowe poprzez efekt cytotoksyczny oraz immunomodulujący. Zastosowanie przeciwciał monoklonalnych w celowanej terapii raka jelita grubego jest nową, dobrze rokującą koncepcją wymagającą dalszych badań.

Refine search results

Intraoperative Colonoscopy in Obstructing Colon Cancer

Development of a new, simple and cost-effective diagnostic tool for genetic screening of hereditary colorectal cancer - the DNA microarray assay

Synchronous Occurrence of Colon and Appendiceal Adenocarcinoma

Hereditary Nonpolyposis Colorectal Cancer in Lower Silesia

Evaluation Of Antioxidant Defense In Patients With Colorectal Carcinoma

Evaluation of immature monocyte-derived dendritic cells generated from patients with colorectal cancer

Case of A 46-Year-Old Woman With Cecum Adenocarcinoma Metastasis to The Right Pectoralis Major Muscle and Skin

Lymphocyte labile iron pool, plasma iron, transferrin saturation and ferritin levels in colon cancer patients.

Hereditary Breast Cancer and Hereditary Non-Polyposis Colorectal Cancer: Description of Two Families, as the Examples of Classical Hereditary Predisposition to Cancers

Prebiotics and bioactive natural substances induce changes of composition and metabolic activities of the colonic microflora in cancerous rats

Immunomodelling Characteristics of Mature Dendritic Cells Stimulated by Colon Cancer Cells Lysates

Colorectal Cancer in Young and Elderly Patients

The role of histopathological examination, therapeutic difficulties and thromboembolism treatment during palliative chemotherapy in patient with antithrombin deficiency, colon cancer and endometrial cancer

Knowledge and Awareness of Colorectal Cancer

Rola mesalazyny w chemoprewencji raka jelita grubego

The effects of peroxisome proliferator-activated receptor gamma agonists and fluorouracil on Colon 38 cancer growth in vitro

Suppression of ID1 expression in colon cancer cells increases sensitivity to 5-fluorouracil

Colon cancer – new strategies of treatment