Jarosław Szefel
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Research Interests
Jarosław Szefel has a total of 43 co-authors. Here are the top co-authors by number of shared publications:
- Mariusz Szajewski
Department of Oncological Surgery, Gdynia Oncology Centre, 81-519 Gdynia, Poland
16 shared publications - Wiesław Janusz Kruszewski
Department of Oncological Surgery, Gdynia Oncology Centre, 81-519 Gdynia, Poland
16 shared publications - Maciej Ciesielski
Department of Oncological Surgery, Gdynia Oncology Centre, 81-519 Gdynia, Poland
14 shared publications Krzysztof Kawecki
Department of Oncological Surgery
7 shared publications- Jakub Walczak
Department of Oncological Surgery, Gdynia Oncology Centre, 81-519 Gdynia, Poland
5 shared publications - Jerzy Jankun
The University of Toledo
5 shared publications
Latest Publications
- Open Access
- 20 August 2020
- Published by Hindawi Limited in Journal of Nutrition and Metabolism
- Vol. 2020, 1-9
Bioelectrical Impedance Analysis to Increase the Sensitivity of Screening Methods for Diagnosing Cancer Cachexia in Patients with Colorectal Cancer
Background. Currently used methods for detecting and monitoring cancer cachexia (CC) are not sensitive enough. In this field, there is a need to implement new instruments into clinical practice. Objective. Determining the usefulness of bioelectrical impedance analysis (BIA) for detecting and monitoring CC in patients with colorectal cancer (CRC). Methods. 158 people were invited to the study (70 from CRC and 88 controls). Their body composition was determined using BIA, and their nutritional status was determined according to NRS 2002, SGA, and BMI criteria. For statistical data analysis, Student’s t-test, Mann–Whitney U test, and AUC ROC were used. Results. Men with CRC stage I had higher values of FMI, SMMI, and ECW/TBW ( ) than in stages II–IV, and women with CRC stage I had higher values of FMI, FFMI, and FM/FFM than in the group of stages II–IV ( ). The ability of FFMI to detect malnutrition relative to SGA was low (sensitivity: women 40%, men 40% and specificity: women 74%, men 70%). Conclusions. SGA and NRS 2002 scales are dynamic and consider changes in nutritional status over time, while BIA is static and does not consider these changes. Therefore, BIA is not a good tool for screening nutritional status. BIA successfully identifies differences in body composition depending on cancer stage and advancement of CC. Therefore, after the diagnosis CRC, just to monitor the disease advancement and state of CC, it is worth comparing the results of periodically repeated BIA.
- 20 August 2020
- Published by Hindawi Limited in Journal of Nutrition and Metabolism
- Vol. 2020, 1-9
Open AccessBioelectrical Impedance Analysis to Increase the Sensitivity of Screening Methods for Diagnosing Cancer Cachexia in Patients with Colorectal Cancer
Background. Currently used methods for detecting and monitoring cancer cachexia (CC) are not sensitive enough. In this field, there is a need to implement new instruments into clinical practice. Objective. Determining the usefulness of bioelectrical impedance analysis (BIA) for detecting and monitoring CC in patients with colorectal cancer (CRC). Methods. 158 people were invited to the study (70 from CRC and 88 controls). Their body composition was determined using BIA, and their nutritional status was determined according to NRS 2002, SGA, and BMI criteria. For statistical data analysis, Student’s t-test, Mann–Whitney U test, and AUC ROC were used. Results. Men with CRC stage I had higher values of FMI, SMMI, and ECW/TBW ( ) than in stages II–IV, and women with CRC stage I had higher values of FMI, FFMI, and FM/FFM than in the group of stages II–IV ( ). The ability of FFMI to detect malnutrition relative to SGA was low (sensitivity: women 40%, men 40% and specificity: women 74%, men 70%). Conclusions. SGA and NRS 2002 scales are dynamic and consider changes in nutritional status over time, while BIA is static and does not consider these changes. Therefore, BIA is not a good tool for screening nutritional status. BIA successfully identifies differences in body composition depending on cancer stage and advancement of CC. Therefore, after the diagnosis CRC, just to monitor the disease advancement and state of CC, it is worth comparing the results of periodically repeated BIA.
- 1 March 2019
- Published by Elsevier in Advances in Medical Sciences
- Vol. 64 (1) , 104-110
Metabolic pathways of L-arginine and therapeutic consequences in tumors
- 1 March 2019
- Published by Elsevier in Advances in Medical Sciences
- Vol. 64 (1) , 104-110
Metabolic pathways of L-arginine and therapeutic consequences in tumors
- Open Access
- 1 January 2019
- Published by XMLink in Journal of Gastric Cancer
- Vol. 19 (2) , 202-211
Extremely High Mortality Rate after a Successful Gastrectomy for Cancer in Older Adults
Ciesielski M, et al. J Gastric Cancer. 2019 Jun;19(2):202-211. https://doi.org/10.5230/jgc.2019.19.e16
- 1 January 2019
- Published by XMLink in Journal of Gastric Cancer
- Vol. 19 (2) , 202-211
Open AccessExtremely High Mortality Rate after a Successful Gastrectomy for Cancer in Older Adults
Ciesielski M, et al. J Gastric Cancer. 2019 Jun;19(2):202-211. https://doi.org/10.5230/jgc.2019.19.e16
- Open Access
- 1 January 2017
- Published by Termedia Sp. z.o.o. in Gastroenterology Review
- Vol. 3 (3) , 215-221
Analysis of postoperative morbidity and mortality following surgery for gastric cancer. Surgeon volume as the most significant prognostic factor
Introduction : Surgical resection is the only potentially curative modality for gastric cancer and it is associated with substantial morbidity and mortality. Aim: To determine risk factors for postoperative morbidity and mortality following major surgery for gastric cancer. Material...
- 1 January 2017
- Published by Termedia Sp. z.o.o. in Gastroenterology Review
- Vol. 3 (3) , 215-221
Open AccessAnalysis of postoperative morbidity and mortality following surgery for gastric cancer. Surgeon volume as the most significant prognostic factor
Introduction : Surgical resection is the only potentially curative modality for gastric cancer and it is associated with substantial morbidity and mortality. Aim: To determine risk factors for postoperative morbidity and mortality following major surgery for gastric cancer. Material...
- Open Access
- 1 January 2016
- Published by Termedia Sp. z.o.o. in Gastroenterology Review
- Vol. 3 (3) , 181-186
Medium-chain triglycerides/long-chain triglycerides versus long-chain triglycerides in treatment of cancer patients with major body mass loss. Survival in patients with refractory cachexia
Introduction : Currently there are no established guidelines regarding the use of long-chain triglycerides (LCT) vs. medium-chain triglycerides medium-chain triglycerides (MCT)/long-chain triglycerides (LCT) in total parenteral nutrition (TPN). Severe malnutrition of patients with refractory...
- 1 January 2016
- Published by Termedia Sp. z.o.o. in Gastroenterology Review
- Vol. 3 (3) , 181-186
Open AccessMedium-chain triglycerides/long-chain triglycerides versus long-chain triglycerides in treatment of cancer patients with major body mass loss. Survival in patients with refractory cachexia
Introduction : Currently there are no established guidelines regarding the use of long-chain triglycerides (LCT) vs. medium-chain triglycerides medium-chain triglycerides (MCT)/long-chain triglycerides (LCT) in total parenteral nutrition (TPN). Severe malnutrition of patients with refractory...
- Open Access
- 11 March 2015
- Published by Wiley in BioMed Research International
- Vol. 2015, 1-6
Factors Influencing the Eicosanoids SynthesisIn Vivo
External factors activate a sequence of reactions involving the reception, transduction, and transmission of signals to effector cells. There are two main phases of the body’s reaction to harmful factors: the first aims to neutralize the harmful factor, while in the second the inflammatory process is reduced in size and resolved. Secondary messengers such as eicosanoids are active in both phases. The discovery of lipoxins and epi-lipoxins demonstrated that not all arachidonic acid (AA) derivatives have proinflammatory activity. It was also revealed that metabolites of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) such as resolvins, protectins, and maresins also take part in the resolution of inflammation. Knowledge of the above properties has stimulated several clinical trials on the influence of EPA and DHA supplementation on various diseases. However, the equivocal results of those trials prevent the formulation of guidelines on EPA and DHA supplementation. Prescription drugs are among the substances with the strongest influence on the profile and quantity of the synthesized eicosanoids. The lack of knowledge about their influence on the conversion of EPA and DHA into eicosanoids may lead to erroneous conclusions from clinical trials.
- 11 March 2015
- Published by Wiley in BioMed Research International
- Vol. 2015, 1-6
Open AccessFactors Influencing the Eicosanoids SynthesisIn Vivo
External factors activate a sequence of reactions involving the reception, transduction, and transmission of signals to effector cells. There are two main phases of the body’s reaction to harmful factors: the first aims to neutralize the harmful factor, while in the second the inflammatory process is reduced in size and resolved. Secondary messengers such as eicosanoids are active in both phases. The discovery of lipoxins and epi-lipoxins demonstrated that not all arachidonic acid (AA) derivatives have proinflammatory activity. It was also revealed that metabolites of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) such as resolvins, protectins, and maresins also take part in the resolution of inflammation. Knowledge of the above properties has stimulated several clinical trials on the influence of EPA and DHA supplementation on various diseases. However, the equivocal results of those trials prevent the formulation of guidelines on EPA and DHA supplementation. Prescription drugs are among the substances with the strongest influence on the profile and quantity of the synthesized eicosanoids. The lack of knowledge about their influence on the conversion of EPA and DHA into eicosanoids may lead to erroneous conclusions from clinical trials.
- 1 February 2015
- Published by Wolters Kluwer Health in Applied Immunohistochemistry & Molecular Morphology
- Vol. 23 (2) , 113-117
The HER2 Gene and HER2 Protein Status and Chromosome 17 Polysomy in Gastric Cancer Cells in Own Material
Background: The aims of the study were to assess the expression of HER2 protein, the amplification of the HER2 gene, and the occurrence of chromosome 17 polysomy in gastric cancer cells and to analyze the relation between the results of such a determination and the selected clinicopathologic parameters in patients treated for gastric cancer. Methods: Tissue samples of primary tumor from 83 consecutive patients who underwent gastric cancer resection were analyzed by immunohistochemical (IHC) analysis and fluorescence in situ hybridization (FISH). Results: A positive result of the IHC test, with a minimum score +, was obtained among 22.8% patients. The FISH test was carried out successfully among 58 patients, including 10.3% cases with a positive result, whereas the presence of chromosome 17 polysomy was confirmed among 13.8% patients. A statistically significant dependence was found between the presence of HER2 overexpression and: the lower stage of tumor infiltration, the higher grade of cancer differentiation, no mucinous component, and the intestinal type according to the Lauren classification. Statistically significant relation was found between chromosome 17 polysomy and the tumor location in the proximal part of the stomach, the performance of the palliative procedure, the presence of distant metastases, and a higher frequency of postoperative complications. Conclusions: There is no complete coincidence in gastric cancer between the occurrence of the HER2 gene amplification and the HER2 receptor expression. The impact of the HER2 gene status and HER2 protein on prognosis in gastric cancer remains unclear. Chromosome 17 polysomy may be an important negative prognostic factor in gastric cancer.
- 1 February 2015
- Published by Wolters Kluwer Health in Applied Immunohistochemistry & Molecular Morphology
- Vol. 23 (2) , 113-117
The HER2 Gene and HER2 Protein Status and Chromosome 17 Polysomy in Gastric Cancer Cells in Own Material
Background: The aims of the study were to assess the expression of HER2 protein, the amplification of the HER2 gene, and the occurrence of chromosome 17 polysomy in gastric cancer cells and to analyze the relation between the results of such a determination and the selected clinicopathologic parameters in patients treated for gastric cancer. Methods: Tissue samples of primary tumor from 83 consecutive patients who underwent gastric cancer resection were analyzed by immunohistochemical (IHC) analysis and fluorescence in situ hybridization (FISH). Results: A positive result of the IHC test, with a minimum score +, was obtained among 22.8% patients. The FISH test was carried out successfully among 58 patients, including 10.3% cases with a positive result, whereas the presence of chromosome 17 polysomy was confirmed among 13.8% patients. A statistically significant dependence was found between the presence of HER2 overexpression and: the lower stage of tumor infiltration, the higher grade of cancer differentiation, no mucinous component, and the intestinal type according to the Lauren classification. Statistically significant relation was found between chromosome 17 polysomy and the tumor location in the proximal part of the stomach, the performance of the palliative procedure, the presence of distant metastases, and a higher frequency of postoperative complications. Conclusions: There is no complete coincidence in gastric cancer between the occurrence of the HER2 gene amplification and the HER2 receptor expression. The impact of the HER2 gene status and HER2 protein on prognosis in gastric cancer remains unclear. Chromosome 17 polysomy may be an important negative prognostic factor in gastric cancer.
- Open Access
- 1 January 2015
- Published by Termedia Sp. z.o.o. in Contemporary Oncology
- Vol. 6 (6) , 446-450
VEGF-C expression is not a prognostic factor in locally advanced colon adenocarcinoma
Aim of the study : Evaluation of the relationships between increased expression of VEGF-C (vascular endothelial growth factor-C) and vessel density in the tumour-surrounding stroma, patient survival, and other conventional prognostic factors in patients with pT3-4 colon cancer. Material and...
- 1 January 2015
- Published by Termedia Sp. z.o.o. in Contemporary Oncology
- Vol. 6 (6) , 446-450
Open AccessVEGF-C expression is not a prognostic factor in locally advanced colon adenocarcinoma
Aim of the study : Evaluation of the relationships between increased expression of VEGF-C (vascular endothelial growth factor-C) and vessel density in the tumour-surrounding stroma, patient survival, and other conventional prognostic factors in patients with pT3-4 colon cancer. Material and...
- Open Access
- 1 January 2015
- Published by Termedia Sp. z.o.o. in Gastroenterology Review
- Vol. 2 (2) , 71-77
Enteral feeding and its impact on the gut immune system and intestinal mucosal barrier
Enteral feeding is the preferred method of nutritional therapy. Mucosal lack of contact with nutrients leads do lymphoid tissue atrophy, immune system functional decline, and intensification in bacterial translocation. Currently, it is assumed that microbiome is one of the body organs that has a...
- 1 January 2015
- Published by Termedia Sp. z.o.o. in Gastroenterology Review
- Vol. 2 (2) , 71-77
Open AccessEnteral feeding and its impact on the gut immune system and intestinal mucosal barrier
Enteral feeding is the preferred method of nutritional therapy. Mucosal lack of contact with nutrients leads do lymphoid tissue atrophy, immune system functional decline, and intensification in bacterial translocation. Currently, it is assumed that microbiome is one of the body organs that has a...