scholarly journals Association between aspirin dose and subarachnoid hemorrhage from saccular aneurysms

Neurology ◽  
2018 ◽  
Vol 91 (12) ◽  
pp. e1175-e1181 ◽  
Author(s):  
Anil Can ◽  
Robert F. Rudy ◽  
Victor M. Castro ◽  
Sheng Yu ◽  
Dmitriy Dligach ◽  
...  
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Dose Response ◽  
Intracranial Aneurysms ◽  
Massachusetts General Hospital ◽  
Aneurysmal Subarachnoid Hemorrhage ◽  
Response Relationship ◽  
Dose Response Relationship ◽  
Aspirin Dose ◽  
Increased Risk ◽  
Saccular Aneurysms

ObjectiveTo determine the association between ruptured saccular aneurysms and aspirin use/aspirin dose.MethodsFour thousand seven hundred one patients who were diagnosed at the Massachusetts General Hospital and Brigham and Women's Hospital between 1990 and 2016 with 6,411 unruptured and ruptured saccular intracranial aneurysms were evaluated. Univariable and multivariable logistic regression analyses were performed to determine the association between aneurysmal subarachnoid hemorrhage and aspirin use, including aspirin dose. Inverse probability weighting using propensity scores was used to adjust for potential differences in baseline characteristics between cases and controls. Additional analyses were performed to examine the association of aspirin use and rerupture before treatment.ResultsIn multivariate analysis with propensity score weighting, aspirin use (odds ratio [OR] 0.60, 95% confidence interval [CI] 0.45–0.80) was significantly associated with decreased risk of ruptured intracranial aneurysms. There was a significant inverse dose-response relationship between aspirin dose and aneurysmal subarachnoid hemorrhage (OR 0.65, 95% CI 0.53–0.81). In contrast, there was a significant association between aspirin use and increased risk of rerupture before treatment (OR 8.15, 95% CI 2.22–30.0).ConclusionsIn this large case-control study, aspirin therapy at diagnosis was associated with a significantly decreased risk of subarachnoid hemorrhage, with an inverse dose-response relationship among aspirin users. However, once rupture has occurred, aspirin is associated with an increased risk of rerupture before treatment.

Abstract P190: Antihypertensive Monotherapy And Risk Of Depression Incidence

Hypertension ◽  
2020 ◽  
Vol 76 (Suppl_1) ◽  
Author(s):  
Anwar Alnakhli ◽  
Richard Shaw ◽  
Daniel Smith ◽  
Sandosh Padmanabhan
Keyword(s):  
Dose Response ◽  
Enzyme Inhibitor ◽  
Previous History ◽  
Cox Proportional Hazards ◽  
Recent Theory ◽  
Defined Daily Dose ◽  
Response Relationship ◽  
Dose Response Relationship ◽  
Antihypertensive Medications ◽  
Increased Risk

Background: Recent theory suggests that antihypertensive medications may be useful as repurposed treatments for mood disorders, however, empirical evidence is inconsistent Objective: We aimed to assess the risk of depression incidence as indicated by first-ever prescription of antidepressant in patients newly exposed to antihypertensive monotherapy and whether there is a dose-response relationship. Method: This study enrolled 2406 new users of antihypertensive monotherapy aged between 18 and 80 years with no previous history of antidepressant prescriptions. The exposure period (EP) to antihypertensive medication was fixed at one year starting from the first date of antihypertensive prescription between Jan 2005 and Mar 2012 and extended up to 12 months. Follow-up commence after the EP until March 2013. To test for dose-response relationship the cumulative defined daily dose (cDDD) of antihypertensive during the EP were stratified into tertiles. Cox proportional hazards models were used to estimate hazard ratios (HR) for depression incidence. Results: Among the five major classes of antihypertensive medications, calcium channel blocker (CCB) had the highest risk of developing depression after adjusting for covariates (HR = 1.40 95%CI 1.11,1.78) compared to angiotensin-converting enzyme inhibitor (ACEI). Angiotensin-receptor blocker (ARB) treatment showed higher risk of depression incidence with tertile 2(HR= 1.46, 95%CI 0.88,2.44) and tertile 3 (HR= 1.75, 95%CI 1.03,2.97) compared to tertile 1 of cDDD. Conclusion: Our findings confirmed previous evidence suggesting that CCB is associated with increased risk of depression incidence compared to ACEI. Risk of developing depression is also linked to ARB, though it might be dose dependent.

scholarly journals Serum Uric Acid Might Be Positively Associated With Hypertension in Chinese Adults: An Analysis of the China Health and Nutrition Survey

2022 ◽  
Vol 8 ◽  
Author(s):  
Yingdong Han ◽  
Kaidi Han ◽  
Xinxin Han ◽  
Yue Yin ◽  
Hong Di ◽  
...  
Keyword(s):  
Uric Acid ◽  
Dose Response ◽  
Response Relationship ◽  
Chinese Adults ◽  
Dose Response Relationship ◽  
Nutrition Survey ◽  
Health And Nutrition ◽  
Increased Risk ◽  
Stratified Analysis

Background: Previous studies have clarified the relationship between serum uric acid (SUA) and hypertension; most of previous studies suggest that elevated uric acid levels are associated with an increased risk of hypertension, while in China, there are relatively few studies to explore above association. The objective of this longitudinal study is to investigate the correlation of SUA and hypertension in Chinese adults with a nationwide large-scale sample.Methods: Data from the China Health and Nutrition Survey 2009, 2011, and 2016 were used; a total of 8,469 participants (3,973 men and 4,496 women) were involved. This study was conducted separately by gender. Clinical characteristics of the participants among different uric acid groups are compared. The binary logistic regression analysis was conducted to examine the association between SUA and hypertension. Restricted cubic spline analysis with three knots of the SUA concentration were used to characterize the dose-response relationship. Additionally, we compared the incidence of hypertension in the different baseline uric acid groups during follow-up in 2011 and 2015.Results: After the covariates were fully adjusted, we found that elevated uric acid levels were correlated with increased risk of hypertension in both males (p < 0.01) and females (p < 0.01). With 2-year or 6-year of follow-up, we found participants with higher baseline uric acid levels had a higher incidence of hypertension (p < 0.01). In stratified analysis by obesity, above relationship remained significant in nonobesity population (males: p < 0.05, females: p < 0.01) and became nonsignificant in obesity people. In stratified analysis by age, above positively correlation remained significant in middle-aged men (p < 0.05) and elderly women (p < 0.01). Restricted cubic spline revealed the dose-response relationship between SUA and hypertension; we also found that above relationship was much stronger in females.Conclusion: This study suggests that elevated SUA levels might be positively associated with an increased risk of hypertension in general Chinese adults.

Opioids and the Risk of Motor Vehicle Collision: A Systematic Review

2021 ◽  
pp. 875512252110599
Author(s):  
Silvia J. Leon ◽  
Aaron Trachtenberg ◽  
Derek Briscoe ◽  
Maira Ahmed ◽  
Ingrid Hougen ◽  
...  
Keyword(s):  
Systematic Review ◽  
Dose Response ◽  
Motor Vehicle ◽  
Motor Vehicle Collision ◽  
Prescription Opioid ◽  
Response Relationship ◽  
Dose Response Relationship ◽  
Opioid Prescription ◽  
Vehicle Collision ◽  
Increased Risk

Background: Opioid analgesics are among the most commonly prescribed medications, but questions remain regarding their impact on the day-to-day functioning of patients including driving. We set out to perform a systematic review on the risk of motor vehicle collision (MVC) associated with prescription opioid exposure. Method: We searched Medline, PubMed, EMBASE, Scopus, and TRID from January 1990 to August 31, 2021 for primary studies assessing prescribed opioid use and MVCs. Results: We identified 14 observational studies that met inclusion criteria. Among those, 8 studies found an increased risk of MVC among those participants who had a concomitant opioid prescription at the time of the MVC and 3 found no significant increase of culpability of fatal MVC. The 3 studies that evaluated the presence of a dose-response relationship between the dose of opioids taken and the effects on MVC risk reported the existence of a dose-response relationship. Due to the heterogeneity of the different studies, a quantitative meta-analysis to sum evidence was deemed unfeasible. Our review supports increasing evidence on the association between motor vehicle collisions and prescribed opioids. This research would guide policies regarding driving legislation worldwide. Conclusion: Our review indicates that opioid prescriptions are likely associated with an increased risk of MVCs. Further studies are warranted to strengthen this finding, and investigate additional factors such as individual opioid medications, opioid doses and dose adjustments, and opioid tolerance for their effect on MVC risk.

Familial aneurysmal subarachnoid hemorrhage: a community-based study

1995 ◽  
Vol 83 (3) ◽  
pp. 426-429 ◽  
Author(s):  
Wouter I. Schievink ◽  
Daniel J. Schaid ◽  
Virginia V. Michels ◽  
David G. Piepgras
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Family History ◽  
Intracranial Aneurysms ◽  
Aneurysmal Subarachnoid Hemorrhage ◽  
Familial Aggregation ◽  
Familial Occurrence ◽  
Content Type ◽  
First Degree Relatives ◽  
Increased Risk ◽  
Fine Print

✓ The familial occurrence of intracranial aneurysms has been well described. However, intracranial aneurysms are not rare and the great majority of reported families consist of only two affected members. Therefore, the familial aggregation of intracranial aneurysms could be fortuitous. The authors investigated the familial occurrence of aneurysmal subarachnoid hemorrhage (SAH) in their community to determine whether family members of patients with a ruptured aneurysm are at an increased risk of developing an SAH. All 81 patients from Rochester, Minnesota, who suffered an SAH between 1970 and 1989 from a proven aneurysmal rupture were identified, and they or their families were contacted and a family history was obtained. The number of expected SAHs among first-degree relatives was calculated using previously established age- and sex-specific incidence rates in the community of Rochester. Of the 81 index patients, 76 had complete follow up for family history. Fifteen (20%) of these 76 patients had a first- or second-degree relative with aneurysmal SAH. The number of observed first-degree relatives with aneurysmal SAH was 11, compared to an expected number of 2.66, giving a relative risk of 4.14 (95% confidence interval 2.06–7.40; p < 0.001). In the authors' community, aneurysmal SAH was familial in one of five patients, and this familial aggregation was not fortuitous. The increase in familial risk of aneurysmal SAH is approximately fourfold among first-degree relatives.

Alcohol consumption as a risk factor for pneumonia: a systematic review and meta-analysis

2010 ◽  
Vol 138 (12) ◽  
pp. 1789-1795 ◽  
Author(s):  
A. V. SAMOKHVALOV ◽  
H. M. IRVING ◽  
J. REHM
Keyword(s):  
Systematic Review ◽  
Risk Factor ◽  
Alcohol Consumption ◽  
Alcohol Use ◽  
Dose Response ◽  
Meta Analysis ◽  
Alcohol Use Disorders ◽  
Response Relationship ◽  
Dose Response Relationship ◽  
Increased Risk

SUMMARYThe aim of this study was to quantify the association between alcohol consumption and incidence of pneumonia and to examine possible pathways. This was done by a systematic review and meta-analyses on the dose–response relationship between alcohol consumption or alcohol-use disorders and the incidence of community-acquired pneumonia (CAP). The relative risk (RR) of CAP increased monotonically with increasing alcohol consumption. Individuals consuming 24, 60, and 120 g of pure alcohol daily demonstrated RRs for incident CAP of 1·12 (95% CI 1·02–1·23), 1·33 (95% CI 1·06–1·67) and 1·76 (95% CI 1·13–2·77), respectively, relative to non-drinkers. Clinically defined alcohol-use disorders were associated with an eightfold increased risk of CAP (RR 8·22, 95% CI 4·85–13·95). In conclusion, alcohol was found to be a risk factor for pneumonia with a clear statistical association, and a monotonic dose–response relationship.

scholarly journals The Dose-Response Relationship between Gamma-Glutamyl Transferase and Risk of Diabetes Mellitus Using Publicly Available Data: A Longitudinal Study in Japan

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Wei Zhao ◽  
Jingjing Tong ◽  
Jie Liu ◽  
Jin Liu ◽  
Jinghua Li ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Dose Response ◽  
Incident Diabetes ◽  
Gamma Glutamyl Transferase ◽  
Response Relationship ◽  
Dose Response Relationship ◽  
Baseline Serum ◽  
Gamma Glutamyl ◽  
Increased Risk ◽  
Glutamyl Transferase

Purpose. The purpose of this study was to examine the association between baseline serum gamma-glutamyl transferase (GGT) and incident diabetes mellitus and to explore their dose-response relationship in a cohort of Japanese adults. Patients and Methods. Data were drawn from the NAGALA (NAfld in the Gifu Area, Longitudinal Analysis) study between 2004 and 2015, including hierarchical information on participants ≥18 years of age without diabetes mellitus, preexisting diabetes mellitus, heavy alcohol drinking, or other liver diseases (e.g., hepatitis B/C). The final analytic sample included 15464 participants, 373 of who were diagnosed as diabetes mellitus with a maximum 13-year follow-up. The risk of incident diabetes mellitus according to baseline serum GGT was estimated using multivariable Cox proportional hazards models and a two-piecewise linear regression model was developed to find out the threshold effect. Results. Being in the highest quintile versus the lowest quintile of GGT levels was associated with an almost twofold increased risk of incident diabetes mellitus (hazard ratio 1.83 (95% CI 1.06, 3.15)), independent of age, gender, smoking status, alcohol intake, BMI, SBP, triglycerides, fatty liver, ALT, AST, and fasting plasma glucose. Further analysis revealed a positive curvilinear association between GGT and incident diabetes mellitus, with a saturation effect predicted at 24 IU/L. When serum GGT level was less than 24 IU/L, the risk of developing diabetes mellitus increased significantly with an increase in serum GGT levels (HR 1.04 (1.02, 1.07), P=0.0017). Besides, the association was more significant in nonsmoking participants than ex- or current-smokers (P for interaction = 0.0378). Conclusion. Serum GGT level was a significant predictor of subsequent risk of diabetes mellitus, which increased by 4% for every 1 IU/L increase in GGT when GGT was less than 24 IU/L.

scholarly journals Association between statin use and Alzheimer’s disease with dose response relationship

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Su-Min Jeong ◽  
Dong Wook Shin ◽  
Tae Gon Yoo ◽  
Mi Hee Cho ◽  
Wooyoung Jang ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Dose Response ◽  
Defined Daily Dose ◽  
Response Relationship ◽  
Dose Response Relationship ◽  
Increased Risk ◽  
Statin Prescription ◽  
Korean National Health Insurance ◽  
Statin Use

AbstractThis study aimed to determine the dose–response relationship between the levels of statin exposure and the incidence of Alzheimer’s disease (AD). We included 119,013 Korean adults (≥ 60 years old) using a database from the Korean National Health Insurance Service (2002–2013). Statin exposure was treated as a time-varying variable. Incidence of AD was defined by the first claim code for AD with anti-Alzheimer drugs. AD occurred in 9467 cases during a median 7.2 years of follow-up. Overall, statin use was not associated with an increased risk of AD incidence [adjusted hazard ratio (aHR) = 1.04; 95% confidence interval (CI) = 0.99–1.10]. When examined by level of statin exposure, statin prescription < 540 days during a 2-year window time was associated with a higher risk for incidence of AD compared to statin non-use. However, days of prescription ≥ 540 and cumulative defined daily dose ≥ 540 of statin were associated with decreased risk of AD [aHR (95% CI) = 0.87 (0.80–0.95) and 0.79 (0.68–0.92), respectively]. Our findings indicate that less persistent statin use is associated with increased risk of AD, whereas persistent and adherent statin use is associated with decreased risk of AD.

A SUBCUTANEOUS INJECTION ASSAY FOR ANTI-ANDROGENS IN THE CHICK

1962 ◽  
Vol 41 (2) ◽  
pp. 268-273 ◽  
Author(s):  
Ralph I. Dorfman
Keyword(s):  
Dose Response ◽  
Subcutaneous Injection ◽  
Response Relationship ◽  
Dose Response Relationship

ABSTRACT The stimulating action of testosterone on the chick's comb can be inhibited by the subcutaneous injection of 0.1 mg of norethisterone or Ro 2-7239 (2-acetyl-7-oxo-1,2,3,4,4a,4b,5,6,7,9,10,10a-dodecahydrophenanthrene), 0.5 mg of cortisol or progesterone, and by 4.5 mg of Mer-25 (1-(p-2-diethylaminoethoxyphenyl)-1-phenyl-2-p-methoxyphenyl ethanol). No dose response relationship could be established. Norethisterone was the most active anti-androgen by this test.

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