Publications by authors named "Jan Hlavsa"

Pancreas is a vital gland of gastrointestinal system with exocrine and endocrine secretory functions, interweaved into essential metabolic circuitries of the human body. Pancreatic ductal adenocarcinoma (PDAC) represents one of the most lethal malignancies, with a 5-year survival rate of 11%. This poor prognosis is primarily attributed to the absence of early symptoms, rapid metastatic dissemination, and the limited efficacy of current therapeutic interventions.

View Article and Find Full Text PDF

Exocrine pancreatic insufficiency (EPI), an important cause of maldigestion and malnutrition, results from primary pancreatic disease or is secondary to impaired exocrine pancreatic function. Although chronic pancreatitis is the most common cause of EPI, several additional causes exist. These include pancreatic tumors, pancreatic resection procedures, and cystic fibrosis.

View Article and Find Full Text PDF

Pancreatic ductal adenocarcinoma (PDAC) is now the 11th most common cancer and in 2018 there were 458,918 new cases worldwide. In the Czech Republic, a total of 2,173 patients were diagnosed in 2015, ranking the second in incidence worldwide. In contrast to other malignancies, recent research has not brought any major breakthrough in the treatment of PDAC and hence the prognosis remains very serious.

View Article and Find Full Text PDF

Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal and aggressive cancers with a less than 6% five-year survival rate. Circulating microRNAs (miRNAs) are emerging as a useful tool for non-invasive diagnosis and prognosis estimation in the various cancer types, including PDAC. Our study aimed to evaluate whether miRNAs in the pre-operative blood plasma specimen have the potential to predict the prognosis of PDAC patients.

View Article and Find Full Text PDF
Article Synopsis
  • The study focused on validating six specific miRNAs previously linked to PDAC, comparing levels in 25 PDAC patients undergoing surgery to 24 healthy donors.
  • Results showed that all tested miRNAs were higher in PDAC patients, particularly miR-21-5p, which correlated with overall survival and was identified as an independent unfavorable prognostic factor.
View Article and Find Full Text PDF

Pancreatic ductal adenocarcinoma (PDAC) is a tumor with a poor prognosis, and no targeted therapy is currently available. The aim of the present study was to investigate the prognostic significance of the expression of V-Ki-ras2 Κirsten rat sarcoma viral oncogene homolog (), downstream signaling pathway genes and the association with clinical characteristics in PDAC patients undergoing radical surgery. Tumors and adjacent non-neoplastic pancreatic tissues were examined in 45 patients with histologically verified PDAC.

View Article and Find Full Text PDF
Article Synopsis
  • Pancreatic ductal adenocarcinoma is an aggressive cancer with poor prognosis, highlighting the need for new diagnostic and prognostic biomarkers.
  • This study analyzed microRNA expression in 74 tumor tissues, 18 chronic pancreatitis tissues, and 9 normal tissues, finding significant differences in levels of certain microRNAs.
  • The results suggest that specific microRNAs may serve as potential biomarkers for diagnosis and prognosis, as their levels correlate with disease progression and patient survival outcomes.
View Article and Find Full Text PDF

Background: Treatment or prevention of a benign biliary tree stricture is an unresolved problem. A novel self-expandable biodegradable polydioxanon biliary stent in a porcine model was studied.

Materials And Methods: This new stent was used in 23 pigs.

View Article and Find Full Text PDF

Objectives: The aim of this study was to investigate the prognostic significance of fourteen anticancer drug-relevant solute carrier transporters (SLCs) in pancreatic cancer in the context of clinical-pathological characteristics and the KRAS mutation status of tumors.

Methods: Tumors and non-neoplastic pancreatic tissues were obtained from 32 histologically verified patients with pancreatic ductal adenocarcinoma. The transcript profile of SLCs was assessed using quantitative real-time PCR.

View Article and Find Full Text PDF

Introduction: Infection with Clostridium difficile (CDI) is the most frequent cause of nosocomial diarrhoeas. Most cases are successfully treated by antibiotic therapy, but nearly 10% may progress to the fulminative form of this condition. The objective of the work is retrospective evaluation of the results of surgical treatment in patients with the fulminative form of Clostridium colitis with revealing of risk factors leading to serious post-operative morbidity and mortality.

View Article and Find Full Text PDF

Insulinomas are the most common functioning endocrine tumors of the pancreas. Most of them are well-differentiated tumors, with benign or uncertain behavior at the time of diagnosis. Surgery is considered to be the only curative treatment modality.

View Article and Find Full Text PDF

Purpose: The aim of our study was to compare the accuracy of computed tomography and endoscopic ultrasound (EUS) in pre-operative staging of pancreatic cancer.

Methods: Comparative retrospective study of 86 patients with pancreatic cancer. CT was done in 55 patients, 41 patients were examined by EUS.

View Article and Find Full Text PDF