Part 1. Definition
Given a passage with a context and an answer, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.
Part 2. Example
Context: Chronic rhinosinusitis (CRS) is a heterogeneous disease with an uncertain pathogenesis. Group 2 innate lymphoid cells (ILC2s) represent a recently discovered cell population which has been implicated in driving Th2 inflammation in CRS; however, their relationship with clinical disease characteristics has yet to be investigated. The aim of this study was to identify ILC2s in sinus mucosa in patients with CRS and controls and compare ILC2s across characteristics of disease. A cross-sectional study of patients with CRS undergoing endoscopic sinus surgery was conducted. Sinus mucosal biopsies were obtained during surgery and control tissue from patients undergoing pituitary tumour resection through transphenoidal approach. ILC2s were identified as CD45(+) Lin(-) CD127(+) CD4(-) CD8(-) CRTH2(CD294)(+) CD161(+) cells in single cell suspensions through flow cytometry. ILC2 frequencies, measured as a percentage of CD45(+) cells, were compared across CRS phenotype, endotype, inflammatory CRS subtype and other disease characteristics including blood eosinophils, serum IgE, asthma status and nasal symptom score. 35 patients (40% female, age 48 17 years) including 13 with eosinophilic CRS (eCRS), 13 with non-eCRS and 9 controls were recruited. ILC2 frequencies were associated with the presence of nasal polyps (P = 0.002) as well as high tissue eosinophilia (P = 0.004) and eosinophil-dominant CRS (P = 0.001) (Mann-Whitney U). They were also associated with increased blood eosinophilia (P = 0.005). There were no significant associations found between ILC2s and serum total IgE and allergic disease. In the CRS with nasal polyps (CRSwNP) population, ILC2s were increased in patients with co-existing asthma (P = 0.03). ILC2s were also correlated with worsening nasal symptom score in CRS (P = 0.04).
Answer: As ILC2s are elevated in patients with CRSwNP, they may drive nasal polyp formation in CRS. ILC2s are also linked with high tissue and blood eosinophilia and have a potential role in the activation and survival of eosinophils during the Th2 immune response. The association of innate lymphoid cells in CRS provides insights into its pathogenesis.
Answer: Are group 2 innate lymphoid cells ( ILC2s ) increased in chronic rhinosinusitis with nasal polyps or eosinophilia?
Explanation: The question is based on the following sentences from the two passages (i) Group 2 innate lymphoid cells (ILC2s) {ii) In the CRS with nasal polyps (CRSwNP) population, ILC2s were increased in patients with co-existing asthma (iii) As ILC2s are elevated in patients with CRSwNP, they may drive nasal polyp formation in CRS. and (iv) ILC2s are also linked with high tissue and blood eosinophilia.
Part 3. Exercise
Context: Erectile dysfunction (ED) and cardiovascular disease (CVD) share a great number of common risk factors. There is growing evidence that aldosterone, an independent CVD risk factor, is associated with ED.', 'The purpose of this study was to determine the relationship between plasma aldosterone and erectile dysfunction.', 'This study recruited 287 participants, ranging from 18 to 84years old; 217 were suffering from ED, diagnosed by the International Index of Erectile Function 5 (IIEF-5) scores. Based on IIEF-5 scores, patients were divided into one control group and three ED groups (mild ED; moderate ED; severe ED).', 'The differences in principal characteristics, blood routine, sexual hormone, adrenal hormone, thyroid hormone, renal function, liver function and blood lipid were compared between ED and control groups.', 'Our study demonstrated that the difference of mean plasma aldosterone levels between ED group and the control group was statistically significant (P<0.05). Stepwise logistic regression analysis of all the possible factors support the role of aldosterone as an independent risk factor for ED (OR 1.011; 95% CI 1.003-1.018; P=0.004). Similar statistical methods were applied to the comparison between moderate to severe ED group and control to mild ED group (OR 1.017; 95% CI 1.009-1.024; P<0.001). ROC curve and the area under the curve (0.718; 95% CI 0.643-0.794; P<0.001) were performed to assess the diagnostic effect and to compare the severity of risk with the known independent risk factors, such as age and cholesterol (0.704; 95% CI 0.631-0.778; P<0.001). When using a 374pg/mL cut-off value from Youden index, the OR of ED group versus controls is 3.106 (95% CI 1.458-6.617), while the OR of moderate to severe ED versus control and mild ED is 5.480 (95% CI 3.108-9.662).
Answer: We determined that elevated plasma aldosterone concentration is an independent risk factor for ED. Our findings also indicate that the aldosterone, a well-recognized contributor to vascular injury, might be a potential bond between ED and CVD.
Answer:
Is elevated plasma aldosterone an independent risk factor for erectile dysfunction in men?