RESUMO
Primary cilia are thin hair-like organelles that protrude from the surface of most mammalian cells. They act as specialized cell antennas that can vary widely in response to specific stimuli. However, the effect of changes in cilia length on cellular signaling and behavior remains unclear. Therefore, we aimed to characterize the elongated primary cilia induced by different chemical agents, lithium chloride (LiCl), cobalt chloride (CoCl2), and rotenone, using human retinal pigmented epithelial 1 (hRPE1) cells expressing ciliary G protein-coupled receptor (GPCR), melanin-concentrating hormone (MCH) receptor 1 (MCHR1). MCH induces cilia shortening mainly via MCHR1-mediated Akt phosphorylation. Therefore, we verified the proper functioning of the MCH-MCHR1 axis in elongated cilia. Although MCH shortened cilia that were elongated by LiCl and rotenone, it did not shorten CoCl2-induced elongated cilia, which exhibited lesser Akt phosphorylation. Furthermore, serum readdition was found to delay cilia shortening in CoCl2-induced elongated cilia. In contrast, rotenone-induced elongated cilia rapidly shortened via a chopping mechanism at the tip of the cilia. Conclusively, we found that each chemical exerted different effects on ciliary GPCR signaling and serum-mediated ciliary structure dynamics in cells with elongated cilia. These results provide a basis for understanding the functional consequences of changes in ciliary length.
RESUMO
OBJECTIVES: This study explored the information needs and requirements of patients with pancreatic cancer (PPCs) and their families through patients' and families' views and preferences (PVPs) collected by healthcare professionals (HCPs) and to identify differences in PVPs by profession. METHODS: We conducted an anonymous web-based survey of HCPs in cancer care hospitals in Japan, posing specific questions from patients or families regarding pancreatic cancer within the past year. We qualitatively analysed the data and classified them into several categories according to their content. We also compared the percentage of PVPs in each category in the medical profession. RESULTS: We collected 893 PVPs from 353 HCPs and classified them into 15 topics within 5 categories: (1) treatment and care, (2) characteristics of the disease, (3) daily life, (4) feelings of patients or families and (5) communication with HCPs/peer support information. Physicians, nurses and pharmacists received mainly PVPs in categories 1 and 2. Characteristically, cancer counsellors received PVPs in all categories, with higher frequencies for categories 3-5. CONCLUSIONS: PPCs and families have diverse PVPs, and appear to select different HCPs for consultation based on their specific concerns. Each HCP should recognise that their individual experience may be insufficient in understanding the full spectrum of PVPs; however, cancer counsellors tend to have a broader awareness of them. To support PPCs and families, HCPs should appropriately collaborate with each other, considering that HCPs like cancer counsellors who do not provide direct treatment still play an important role in providing holistic support.
RESUMO
BACKGROUND: Information on the incidence and risk factors of deep vein thrombosis (DVT) in neurodegenerative diseases is limited. We aimed to determine the incidence of DVT among neurodegenerative disorders (amyotrophic lateral sclerosis [ALS], Parkinson's disease [PD], multiple system atrophy [MSA], and progressive supranuclear palsy [PSP]-corticobasal syndrome [CBS]) and the risk factors for the development of DVT. METHODS: Overall, 229 hospitalized patients with neurodegenerative diseases (65 patients with ALS, 61 with PD, 53 with MSA, and 50 with PSP-CBS) were included in this study. D-dimer value and ultrasonography of the leg vein were assessed to determine the presence or absence of leg DVT. We compared the DVT incidence among each disease group. To identify the risk factors for DVT, a multivariate analysis was performed. RESULTS: Of 229 patients, 34 had leg DVT; the incidence was significantly higher in patients with PD (38%) than in those with ALS (2%), MSA (5%), or PSP-CBS (4%). Patients with DVT were older, had a smaller waist circumference, had a longer disease duration, and had a high blood pressure (BP) variability. Multivariate analysis revealed that a PD diagnosis and female sex, with a high BP variability were predictive of leg DVT. CONCLUSIONS: Among the neurodegenerative diseases, the DVT incidence was markedly higher in PD than in ALS, MSA, and PSP-CBS. Several risk factors have been identified in patients with leg DVT. Recognition of these risk factors will improve patient care and guide the appropriate use of anticoagulants.