A mouse model of deep vein thrombosis by inferior vena cava hypoperfusion using ameroid constrictors.

Traditional mouse models for deep vein thrombosis (DVT), frequently utilized in research focused on cancer-associated thrombosis (CAT), reliably induce thrombus formation by obstructing blood flow (BF) in the inferior vena cava (IVC), which does not occur in humans. Therefore, to develop a new DVT model for CAT studies, we implanted an ameroid constrictor (AC), a hygroscopic casein C-shape device, around the IVC and aorta of immunocompromised mice. We evaluated the thrombus 3 and 8 days post-AC implantation and compared it with the traditional model 2 days post-vena cava ligation.

Nationwide Survey on Incidence and Management of Recurrent Respiratory Papillomatosis in Japan.

Objectives: To investigate the incidence, laryngeal distribution, management, and postoperative clinical course of patients with newly diagnosed adult-onset recurrent respiratory papillomatosis (RRP) in Japan.

Methods: An initial brief questionnaire was sent to 782 institutions, including all 101 core and 627 collaborating institutions providing board certification programs accredited by the Japanese Society of Otorhinolaryngology-Head and Neck Surgery. A detailed questionnaire regarding patient age, sex, Derkay's score, surgery, and postoperative clinical course was sent to 196 institutions caring for patients with either newly or previously diagnosed RRP.

Tissue factor pathway inhibitor-2 inhibits integrin β1 activation and focal adhesion formation and suppresses peritoneal ovarian cancer dissemination in mice.

Tissue factor pathway inhibitor-2 (TFPI2) is a Kunitz-type serine protease inhibitor and an ovarian clear cell carcinoma (CCC) biomarker. TFPI2 is expressed in several cancers and exerts tumor-suppressive effects; however, the role of TFPI2 in the CCC cell phenotype remains unclear. Therefore, in this study, we investigated the function of TFPI2 by establishing a gene knockout (KO) in ES-2 CCC cells and observed the change in phenotypes in vitro and in vivo.

Utility of palliative prognostic index and neutrophil-to-lymphocyte ratio in predicting prognosis of end-stage squamous cell carcinoma of head and neck.

Background: The purpose of this study was to examine the factors influencing the prognosis of end-stage head and neck squamous cell carcinoma (HNSCC) and to develop a more useful prognostic index.

Patients And Methods: This retrospective observational study included 79 patients with end-stage HNSCC. Patients were grouped by patient factors and prognostic indicators, and overall survival from the start of Best Supportive Care was compared for each group.

Bone marrow adipocytes induce cancer-associated fibroblasts and immune evasion, enhancing invasion and drug resistance.

Bone metastasis occurs frequently in cancer patients. Conventional therapies have limited therapeutic outcomes, and thus, exploring the mechanisms of cancer progression in bone metastasis is important to develop new effective therapies. In the bone microenvironment, adipocytes are the major stromal cells that interact with cancer cells during bone metastasis.

Cancer cell-derived CD69 induced under lipid and oxygen starvation promotes ovarian cancer progression through fibronectin.

Cancer tissues generally have molecular oxygen and serum component deficiencies because of poor vascularization. Recently, we revealed that ICAM1 is strongly activated through lipophagy in ovarian clear cell carcinoma (CCC) cells in response to starvation of long-chain fatty acids and oxygen and confers resistance to apoptosis caused by these harsh conditions. CD69 is a glycoprotein that is synthesized in immune cells and is associated with their activation through cellular signaling pathways.

Lipophagy-ICAM-1 pathway associated with fatty acid and oxygen deficiencies is involved in poor prognoses of ovarian clear cell carcinoma.

Background: Serum starvation and hypoxia (SSH) mimics a stress condition in tumours. We have shown that intercellular adhesion molecule-1 (ICAM-1) protein is synergistically expressed in ovarian clear cell carcinoma (CCC) cells under SSH in response to an insufficient supply of fatty acids (FAs). This ICAM-1 expression is responsible for resistance against the lethal condition, thereby promoting tumour growth.

A 7-year-old boy with central diabetes insipidus presenting with thickened pituitary stalk and anti-rabphilin-3A antibody positivity.

Objectives: A highly invasive pathological diagnosis is necessary to differentiate central diabetes insipidus (CDI) with a thickened pituitary stalk. Lymphocytic infundibulo-hypophysitis (LIH) due to autoimmune involvement of the pituitary stalk is a differentiating disease, and anti-rabphilin-3A antibody (Rab3A-Ab) positivity was recently reported.

Case Presentation: A 7-year-old boy was diagnosed with CDI after having polyuria for two months.

Current and potential biomarkers in gastric cancer: a critical review of the literature.

Gastric cancer is the fourth most common type of cancer worldwide and the second most lethal. Gastric cancer biomarkers can be used for diagnosis, prediction of sensitivity to treatment, and prognosis. The following search terms were applied to PubMed as of December 2020: 'gastric cancer classification', 'gastric cancer epidemiology', 'cancer metastasis' and 'gastric cancer biomarker'.

New Target Therapies in Advanced Non-Small Cell Lung Cancer: A Review of the Literature and Future Perspectives.

Introduction: Lung cancer (LC) is the most common neoplasm worldwide, and 85% of these tumors are classified as non-small cell lung cancer (NSCLC). LC treatment was initially restricted to cytotoxic chemotherapy-platinum compounds associated with 3rd generation cytotoxic agents (paclitaxel, gemcitabine, pemetrexed) and, more recently, with monoclonal antibodies (bevacizumab, ramucirumab). Advancements in treatment are correlated with prolonged overall survival (OS).

Adenosine leakage from perforin-burst extracellular vesicles inhibits perforin secretion by cytotoxic T-lymphocytes.

Extracellular vesicles (EVs) in the tumor microenvironment facilitate intercellular communication. Cancer cell-derived EVs act as an immunosuppressor by transporting cargos and presenting transmembrane proteins. By contrast, CD8+ cytotoxic T-lymphocytes (CTLs) exert anti-cancer cytotoxicity via the pore-forming protein perforin.

Cost-effectiveness and budget impact of lung cancer immunotherapy in South America: strategies to improve access.

Aim: Immune checkpoint inhibitors revolutionized the treatment of non-small-cell lung cancer, although their costs are a limitation.

Methods: The number of patients with non-small-cell lung cancer eligible for immunotherapy was estimated using local epidemiology data. We extracted survival data from RCTs to estimate the life-years saved in a 5-year time horizon.

The effects of dipeptidyl peptidase-4 on cardiac fibrosis in pressure overload-induced heart failure.

Dipeptidyl peptidase-4 (DPP-4) inhibitors are hypoglycemic agents. DPP-4 inhibitor has cardioprotective effects after transverse aortic constriction (TAC), but role of DPP-4 on cardiac fibrosis after TAC is not well known. Our aim was to determine the effects of DPP-4 on cardiac fibrosis in murine TAC model.

Immune checkpoint inhibitors for advanced non-small cell lung cancer: emerging sequencing for new treatment targets.

Lung cancer is the leading cause of cancer-related deaths in the world. Immune checkpoint inhibitors (ICI) stimulate cytotoxic lymphocyte activity against tumour cells. These agents are available for the treatment of non-small cell lung cancer (NSCLC) after failure of platinum-based therapy.

Cost effectiveness of chemohormonal therapy in patients with metastatic hormone-sensitive and non-metastatic high-risk prostate cancer.

Objective: To assess the cost-effectiveness of chemohormonal therapy in patients with metastatic hormone-sensitive and non-metastatic high-risk prostate cancer.

Methods: An analytical decision model was developed to determine the cost-effectiveness of chemohormonal therapy versus androgen deprivation therapy alone in patients with metastatic hormone-sensitive prostate cancer and patients with non-metastatic high-risk prostate cancer. The cost-effectiveness in metastatic patients with a high-volume disease was assessed separately.

DPP-4 inhibition protects human umbilical vein endothelial cells from hypoxia-induced vascular barrier impairment.

Dipeptidyl peptidase-4 (DPP-4) inhibitors are relatively new class of anti-diabetic drugs. Some protective effects of DPP-4 on cardiovascular disease have been described independently from glucose-lowering effect. However, the detailed mechanisms by which DPP-4 inhibitors exert on endothelial cells remain elusive.

The effect of PD-L1 testing on the cost-effectiveness and economic impact of immune checkpoint inhibitors for the second-line treatment of NSCLC.

Background: Immune checkpoint inhibitors improve outcomes compared with chemotherapy in lung cancer. Tumor PD-L1 receptor expression is being studied as a predictive biomarker. The objective of this study was to assess the cost-effectiveness and economic impact of second-line treatment with nivolumab, pembrolizumab, and atezolizumab with and without the use of PD-L1 testing for patient selection.

PD-L1 expression as a predictive biomarker in advanced non-small-cell lung cancer: updated survival data.

Aim: The treatment of non-small-cell lung cancer has changed after the development of the immune checkpoint inhibitors. Although the most studied biomarker is PD-L1 expression, its clinical significance is still debatable. In this article, we show the updated survival analysis of all published data.

The effects of DPP-4 inhibitor on hypoxia-induced apoptosis in human umbilical vein endothelial cells.

Dipeptidyl peptidase-4 (DPP-4) inhibitors are a new class of oral hypoglycemic agents for patients with type 2 diabetes mellitus and have potential antiatherosclerotic properties. Meanwhile, it is unclear how DPP-4 inhibitors have protective effects on atherosclerosis. Our aim was to determine the effects and its mechanisms of DPP-4 inhibitors on cultured endothelial cells.

Disparities in cancer epidemiology and care delivery among Brazilian indigenous populations.

Objective:: To assess aspects related to cancer in indigenous population.

Methods:: This is a retrospective study developed in a public university hospital. We included patients with 18 or more years of age, diagnosed with solid tumors, and followed between 2005 and 2015.

Definitive chemoradiotherapy for squamous head and neck cancer: cisplatin versus carboplatin? A meta-analysis.

Aim: Concomitant chemoradiotherapy (with cisplatin or carboplatin) is an option of definitive treatment for squamous head and neck cancer. We aimed to perform a meta-analysis comparing those two platinum agents.

Materials & Methods: We carried out a systematic search on English literature between 1990 and 17 April 2015 according to the Cochrane review guidelines.

EGFR and EML4-ALK Updated Therapies in Non-Small Cell Lung Cancer.

Background: Non-small cell lung cancer is the leading cancer-related cause of death.

Objective: We review the latest therapies for NSCLC with EGFR and ELM4-ALK mutations as well as the most relevant studies and promising patents.

Method: A literature search of PubMed database was carried out to identify recent Clinical Trials using EGFR therapies and novel patents involving diagnosis and therapies on NSCLC.