Energy Substrate Transporters in High-Grade Ovarian Cancer: Gene Expression and Clinical Implications

Ovarian cancer is a non-homogenous malignancy. High-grade serous carcinoma (HGSC) is the most common subtype, and its drug resistance mechanisms remain unclear. Despite the advantages of modern pharmacotherapy, high-grade ovarian cancer is associated with a poor prognosis and research into targeted therapies is in progress. The aim of the study was to assess the dominant energy substrate transport mechanism in ovarian cancer cells and to verify whether genomic aberrations could predict clinical outcomes using the Cancer Genome Atlas (TCGA) dataset. Total RNA was extracted from HGSC frozen tissues, and the expression of selected genes was compared to respective controls. GLUT1, FABPpm, MCT4 and SNAT1 genes were significantly overexpressed in carcinomas compared with controls, while expression of CD36/SR-B2, FATP1, FABP4, GLUT4, ASCT2 and LPL was decreased. No differences were found in FATP4, LAT1, MCT1 and FASN. The transcript content of mitochondrial genes such as PGC-1α, TFAM and COX4/1 was similar between groups, while the β-HAD level declined in ovarian cancer. Additionally, the MCT4 level was reduced and PGC-1α was elevated in cancer tissue from patients with ‘small’ primary tumor and omental invasion accompanied by ascites as compared to patients that exhibited greater tendencies to metastasize to lymph nodes with clear omentum. Based on TCGA, higher FABP4 and LPL and lower TFAM expression indicated poorer overall survival in patients with ovarian cancer. In conclusion, the presented data show that there is no exclusive energy substrate in HGSC. However, this study indicates the advantage of glucose and lactate transport over fatty acids, thereby suggesting potential therapeutic intervention targets to impede ovarian cancer growth.

The Exploration of Chemokines Importance in the Pathogenesis and Development of Endometrial Cancer

Endometrial cancer (EC) is one of the most frequent female malignancies. Because of a characteristic symptom, vaginal bleeding, EC is often diagnosed in an early stage. Despite that, some EC cases present an atypical course with rapid progression and poor prognosis. There have been multiple studies conducted on molecular profiling of EC in order to improve diagnostics and introduce personalized treatment. Chemokines—a protein family that contributes to inflammatory processes that may promote carcinogenesis—constitute an area of interest. Some chemokines and their receptors present alterations in expression in tumor microenvironment. CXCL12, which binds the receptors CXCR4 and CXCR7, is known for its impact on neoplastic cell proliferation, neovascularization and promotion of epidermal–mesenchymal transition. The CCL2–CCR2 axis additionally plays a pivotal role in EC with mutations in the LKB1 gene and activates tumor-associated macrophages. CCL20 and CCR6 are influenced by the RANK/RANKL pathway and alter the function of lymphocytes and dendritic cells. Another axis, CXCL10–CXCR3, affects the function of NK-cells and, interestingly, presents different roles in various types of tumors. This review article consists of analysis of studies that included the roles of the aforementioned chemokines in EC pathogenesis. Alterations in chemokine expression are described, and possible applications of drugs targeting chemokines are reviewed.

Two Concurrent Cancers in a 19-Year-Old Patient: Yolk Sac Ovarian Tumor and Metastatic Gastrointestinal Tract Malignancy-Case Report

BACKGROUND

Two concurrent malignancies present in a young person is an extremely rare condition. Diagnoses of gastric cancer primarily concern older patients. There are very few reports of concomitant Krukenberg tumor and germ-cell ovarian malignancy.

CASE

A 19-year-old girl was admitted to the gynecologic oncology department with symptoms of advanced malignancy. Radiological imaging revealed disseminated neoplastic disease with bulky adnexal tumors. Cytoreductive surgery was performed, achieving no visible disease (T = 0 cm). The final pathology report confirmed metastatic mixed adenoneuroendocrine carcinoma (MANEC) in both ovaries, originating from the gastrointestinal tract. Moreover, the primary germ cell yolk sac tumor was found in the left ovary.

CONCLUSION

In cases of concomitant gastric and ovarian tumors, metastatic disease (Krukenberg tumor) should be considered in the differential diagnosis. This concerns even adolescent patients. In particular cases, including tumors with germ cell components, primary debulking surgery is crucial for prognosis.

Factors Predisposing to Burnout Syndrome among Medical Staff Participating in Complex Surgical Processes

Background

Burnout syndrome is a serious manifestation of distress among health-care professionals.

Objective

Due to the specific nature of work in operating theaters, factors that affect the staff performance and therefore predispose to burnout syndrome were assessed.

Methods

Based on the original questionnaire, 254 respondents working in the operating theaters of the university hospital, appraised levels of work satisfaction, sources of stress, and psychosocial burden. Work-related mental stress was assessed using the Meister's questionnaire. Burnout levels were evaluated in the group extended to 316 employees with Maslach Burnout Inventory.

Results

Work satisfaction analysis indicated unsatisfactory management and remuneration as the negative agents. The majority of the respondents emphasized the maintenance of medical records as a prominent stress factor. A large number of participants (n = 221; 87%) described work as emotionally burdensome. The results showed that the highest burden was related to the following variables: time pressure, responsibility, problems, and conflicts. The examined group was qualified to the second degree of mental load related to the work. Similarly, the entire group reached a high level of emotional exhaustion.

Conclusions

Presented data indicate the need of evaluation to minimize occupational burnout problem.

Obesity and Energy Substrate Transporters in Ovarian Cancer-Review

Ovarian cancer is the seventh most common cancer in women. It is characterized by a high mortality rate because of its aggressiveness and advanced stage at the time of diagnosis. It is a nonhomogenous group of neoplasms and, of which the molecular basics are still being investigated. Nowadays, the golden standard in the treatment is debulking cytoreductive surgery combined with platinum-based chemotherapy. We have presented the interactions and the resulting perspectives between fatty acid transporters, glucose transporters and ovarian cancer cells. Studies have shown the association between a lipid-rich environment and cancer progression, which suggests the use of correspondent transporter inhibitors as promising chemotherapeutic agents. This review summarizes preclinical and clinical studies highlighting the role of fatty acid transport proteins and glucose transporters in development, growth, metastasizing and its potential use in targeted therapies of ovarian cancer.

Enhanced Recovery After Surgery (ERAS) in gynecologic oncology: an international survey of peri-operative practice

INTRODUCTION

Enhanced Recovery After Surgery (ERAS) programs have been shown to improve clinical outcomes in gynecologic oncology, with the majority of published reports originating from a small number of specialized centers. It is unclear to what degree ERAS is implemented in hospitals globally. This international survey investigated the status of ERAS protocol implementation in open gynecologic oncology surgery to provide a worldwide perspective on peri-operative practice patterns.

METHODS

Requests to participate in an online survey of ERAS practices were distributed via social media (WhatsApp, Twitter, and Social Link). The survey was active between January 15 and March 15, 2020. Additionally, four national gynecologic oncology societies agreed to distribute the study among their members. Respondents were requested to answer a 17-item questionnaire about their ERAS practice preferences in the pre-, intra-, and post-operative periods.

RESULTS

Data from 454 respondents representing 62 countries were analyzed. Overall, 37% reported that ERAS was implemented at their institution. The regional distribution was: Europe 38%, Americas 33%, Asia 19%, and Africa 10%. ERAS gynecologic oncology guidelines were well adhered to (>80%) in the domains of deep vein thrombosis prophylaxis, early removal of urinary catheter after surgery, and early introduction of ambulation. Areas with poor adherence to the guidelines included the use of bowel preparation, adoption of modern fasting guidelines, carbohydrate loading, use of nasogastric tubes and peritoneal drains, intra-operative temperature monitoring, and early feeding.

CONCLUSION

This international survey of ERAS in open gynecologic oncology surgery shows that, while some practices are consistent with guideline recommendations, many practices contradict the established evidence. Efforts are required to decrease the variation in peri-operative care that exists in order to improve clinical outcomes for patients with gynecologic cancer globally.

Factors affecting weight and body composition in childhood cancer survivors—cross-sectional study

Due to improved efficacy of antitumour treatment in the general population, there are increasingly more childhood cancer survivors. However, some of these survivors are at risk of distant complications including cardiovascular disease. We aimed to examine the risk of overweight/obesity and abnormal body composition in a large group of patients from our paediatric oncology centre. We used anthropometric methods and electrical bioimpedance to assess these features, and then determined their association with disease and treatment. We found patients treated for leukaemia/lymphoma (especially boys) had significantly higher rates of overweight/obesity compared to the other patient groups. On the contrary, overweight/obesity was more common in girls among patients treated for solid tumours. Patients treated for leukaemia/lymphoma were characterised by a higher body fat content compared to those treated for solid tumours and controls. During treatment for cancer, patients had a higher percentage of muscle mass deficiency compared to those in the control group. Our regression analysis showed time from completion of treatment, gender and type of therapy (radiotherapy, megachemotherapy) were associated with body weight and body composition including fat and muscle content. We recommend paediatricians and general practitioners should actively try to detect and prevent cardiovascular disease among childhood cancer survivors.