OBJECTIVES: The aim of this study is to investigate the role of platelet-derived growth factor (PDGF) in the pathogenesis of sinonasal polyps. METHODS: Study group (groups 1-3) consisted of nasal polyp samples of patients with sinonasal polyps and the control group consisted of inferior turbinate samples of patients without nasal polyp. In group 1, 14 specimens from ethmoid sinus; in group 2, 10 specimens from nasal cavity; in group 3, 10 specimens from maxillary sinus; and in group 4 (control), 9 specimens from inferior turbinate were included. By immunohistochemical staining technique, the PDGF positivity index (PI) in mucosal layers and in the inflammatory cells were assessed at the epithelium (EP), subepithelial layer of lamina propria (SE), and deep paraglandular layer of the mucosa (D). RESULTS: Polymorphonuclear cell (PMNC)-percentage (%) values of ethmoid and maxillary sinus, and the PDGF PI from all cells of ethmoid sinus and nasal cavity were significantly higher than those of the control group. As mononuclear cell-% (MNC-%) increased, the PDGF_EP_basal PI, PDGF_SE_endothelial PI, and PDGF_D_endothelial PI decreased. As PMNC-PDGF PI increased, the PDGF_D_perivascular PI decreased and PDGF_D_endothelial PI increased. As PDGF-MNC PI increased, the PDGF_EP_apical PI, PDGF_SE_endothelial PI, and PDGF_D_endothelial PI decreased. As PDGF-all cells (PMNCs, MNCs, and fibroblasts) PI increased, the PDGF_EP_basal PI and PDGF_D_endothelial PI decreased, and the PDGF_D_perivascular PI increased. CONCLUSION: We concluded that the PDGF systems play important roles in polyp pathogenesis. Fibroblast-derived PDGF may be more important than MNC-derived PDGF in polyp developing process. Increased perivascular-PDGF-PI in deep layers of the mucosa may result in sinonasal polyp formation by causing an increase in vascular permeability and extracellular edema, and thus promoting migration of inflammatory cells to extracellular area. Tissue oxygenization may be important for the initiation of PDGF release system. Because of this reason, nasal obstruction should be medically treated earlier, and, if necessary, by surgical approaches.
Capillary Permeability ; Edema ; Epithelium ; Ethmoid Sinus ; Humans ; Maxillary Sinus ; Mucous Membrane ; Nasal Cavity ; Nasal Obstruction ; Nasal Polyps ; Oxygen ; Platelet-Derived Growth Factor ; Polyps ; Turbinates

OBJECTIVE: Older people seek not only a longer life, but also a better quality of life (QOL). Our aim was to find out the relationship between QOL and socio-demographic factors, social activities, cognitive status, depression and anxiety symptoms among medically ill and hospitalized elderly people in Turkey. METHODS: Two hundred forty three patients age 65 years or older were examined. The Socio-demographic Data Survey, the Mini Mental State Examination (MMSE), the Geriatric Depression Scale-short form (GDS-15), the Beck Anxiety Inventory (BAI) and the World Health Organization Quality of Life Instrument-Older Adults Module (WHOQOL-OLD) were applied to participants. The independent samples t-test and analysis of variance (ANOVA) were used to analyze quantitative data. Pearson's correlation and linear regression analysis were performed. RESULTS: The total score for QOL was significantly higher for those who saw their family members and relatives frequently rather than rarely (p=0.002), who were always busy with social activities rather than rarely or never (p<0.001), who had more years of education (p=0.003), and who were frequently exercising (p=0.023). According to linear regression analysis, the WHOQOL-OLD total score increased by 0.295 and -0.936 units, while MMSE and GDS-15 scale scores increased one unit respectively (beta=0.295, t=1.979, p=0.04; beta=-0.936, t=-4.881, p<0.001). CONCLUSION: Cognitive disabilities, depression, and other psychiatric problems along with medical disease negatively affect the QOL of elderly patients. While performing medical assessment regarding elders, detecting and treating cognitive disabilities and depression is very valuable in improving the QOL of elderly patients.
Adult ; Aged* ; Anxiety* ; Cognition ; Depression* ; Education ; Humans ; Linear Models ; Quality of Life* ; Turkey ; World Health Organization