Serum Zinc Levels and Incidence of Ischemic Stroke: The Reasons for Geographic and Racial Differences in Stroke Study

Stroke ◽  
2021 ◽  
Author(s):  
Lindsey Mattern ◽  
Cheng Chen ◽  
Leslie A. McClure ◽  
John Brockman ◽  
Mary Cushman ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Racial Differences ◽  
Proportional Hazards ◽  
Serum Zinc ◽  
Zinc Level ◽  
Hazard Ratio ◽  
Inverse Association ◽  
Zinc Levels ◽  
Incident Cases ◽  
Serum Zinc Levels

Background and Purpose: Despite zinc’s role as an antioxidant and anti-inflammatory agent, prospective studies relating zinc levels to ischemic stroke risk are lacking. To examine the association between serum zinc levels and incidence of ischemic stroke in a US population. Methods: Using a case–cohort study nested within the Reasons for Geographic and Racial Differences in Stroke cohort, participants were randomly selected from the Reasons for Geographic and Racial Differences in Stroke cohort to generate a sub-cohort (n=2346). All incident ischemic stroke cases as of September 2012 (n=660) were included, with 62 incident cases overlapping in the sub-cohort. Serum zinc levels were measured at baseline. Barlow-weighted Cox’s proportional hazards regression models were used to calculate multivariable-adjusted hazard ratios and the corresponding 95% CI of ischemic stroke by serum zinc levels. Results: The median zinc level for the sub-cohort was 121.19 µg/dL (interquartile range, 104.86–140.39 µg/dL). Serum zinc levels were inversely associated with incidence of ischemic stroke after adjustment for potential confounders (quartile 4 versus quartile 1: hazard ratio, 0.78 [95% CI, 0.61–0.98], P =0.03 for trend). When stratified by prespecified factors (sex, race, region), only sex showed a significant modification ( P =0.03 for interaction). The inverse association was more pronounced among females (quartile 4 versus quartile 1: hazard ratio, 0.58 [95% CI, 0.41–0.84], P <0.01 for trend) than males (quartile 4 versus quartile 1: hazard ratio, 1.08 [95% CI, 0.78–1.51], P =0.92 for trend). Conclusions: Serum zinc concentration was inversely associated with incidence of ischemic stroke, especially among women, indicating that low zinc levels may be a risk factor for ischemic stroke.

Abstract P590: Serum Zinc Levels and Incidence of Ischemic Stroke: The Reasons for Geographic and Racial Differences in Stroke Study

Stroke ◽  
2021 ◽  
Vol 52 (Suppl_1) ◽  
Author(s):  
Lindsey Mattern ◽  
Cheng Chen ◽  
Leslie A McClure ◽  
John Brockman ◽  
Mary Cushman ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Racial Differences ◽  
Proportional Hazards ◽  
Serum Zinc ◽  
Zinc Level ◽  
Inverse Association ◽  
Stroke Study ◽  
Zinc Levels ◽  
Incident Cases ◽  
Serum Zinc Levels

Background and Purpose: Despite zinc’s role as an anti-oxidant and anti-inflammatory agent, prospective studies relating zinc levels to ischemic stroke risk are lacking. We aimed to examine the association between serum zinc levels and incidence of ischemic stroke in a US population. Methods: Using a case-cohort study nested within the REGARDS (REasons for Geographic and Racial Differences in Stroke) cohort, participants were randomly selected from the REGARDS cohort to generate a sub-cohort ( n= 2,346). All incident ischemic stroke cases as of September 2012 ( n =660) were included, with 62 incident cases overlapping in the sub-cohort. Serum zinc levels were measured at baseline. Barlow-weighted Cox’s proportional hazards regression models were used to calculate multivariable-adjusted hazard ratios (HR) and the corresponding 95% confidence intervals (CI) of ischemic stroke by serum zinc levels. Results: The median zinc level for the sub-cohort was 121.19 μg/dL (interquartile range 104.86 to 140.39 μg/dL). Serum zinc levels were inversely associated with incidence of ischemic stroke after adjustment for potential confounders (quartile 4 vs. quartile 1: HR=0.78, 95% CI: 0.61-0.98, p=0.03 for trend). When stratified by pre-specified factors (sex, race, region), only sex showed a significant modification (p=0.03 for interaction). The inverse association was more pronounced among females (quartile 4 vs. quartile 1: HR=0.58, 95% CI: 0.41-0.84, p<0.01 for trend) than males (quartile 4 vs. quartile 1: HR=1.08, 95% CI: 0.78-1.51, p=0.92 for trend). Conclusions: Serum zinc concentration was inversely associated with incidence of ischemic stroke, especially among women, indicating that low zinc levels may be a risk factor for ischemic stroke.

scholarly journals Association between Reduced Serum Zinc and Diastolic Dysfunction in Maintenance Hemodialysis Patients

Nutrients ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 2077
Author(s):  
Jiun-Chi Huang ◽  
Ya-Chin Huang ◽  
Pei-Yu Wu ◽  
Wen-Hsien Lee ◽  
Yi-Chun Tsai ◽  
...  
Keyword(s):  
Diastolic Dysfunction ◽  
Left Atrial Volume ◽  
Serum Zinc ◽  
Zinc Level ◽  
Volume Index ◽  
Serum Zinc Level ◽  
Lower Serum ◽  
Echocardiographic Parameters ◽  
Zinc Levels ◽  
Serum Zinc Levels

Diastolic dysfunction is an emerging challenge among hemodialysis (HD) patients, and the associations between serum zinc with echocardiographic parameters and diastolic function remain uncertain. A total of 185 maintenance HD patients were stratified by the tertiles of serum zinc level to compare their clinical characteristics and echocardiography. Correlations of serum zinc levels with echocardiographic parameters were examined using Pearson’s analysis. Univariate and multivariate logistic regression analyses were performed to investigate the determinants of E/e’ ratio >15 and left atrial volume index (LAVI) > 34 mL/m2, both indicators of diastolic dysfunction. Patients belonging to the first tertile of serum zinc level had a significantly higher E/e’ ratio and LAVI. Serum zinc levels were negatively correlated with E (r = −0.204, p = 0.005), E/e’ ratio (r = −0.217, p = 0.003), and LAVI (r = −0.197, p = 0.007). In a multivariate analysis, older age, diabetes, coronary artery disease, and lower serum zinc levels (OR = 0.974, 95% CI = 0.950–0.999, p = 0.039) were significantly associated with E/e’ ratio >15. Furthermore, diabetes and lower serum zinc levels (OR = 0.978, 95% CI = 0.958–0.999, p = 0.041) were significantly associated with LAVI >34 mL/m2. Reduced serum zinc level was significantly associated with diastolic dysfunction among HD patients. Further prospective studies are warranted to investigate whether zinc supplementation can attenuate cardiac dysfunction in maintenance HD patients.

scholarly journals A study of serum zinc levels in children with febrile convulsions in comparison with normal and febrile children

2020 ◽  
Vol 7 (3) ◽  
pp. 588
Author(s):  
Madhubalan T. ◽  
Chidambaranathan S. ◽  
Ramamoorthy R.
Keyword(s):  
Statistical Significance ◽  
Serum Zinc ◽  
Zinc Level ◽  
Serum Zinc Level ◽  
Normal Children ◽  
Febrile Convulsions ◽  
Significant Difference ◽  
Zinc Levels ◽  
The Brain ◽  
Serum Zinc Levels

Background: A seizure is a paroxysmal time-limited change in motor activity and or behavior that results from abnormal electrical activity in the brain. Seizures are common in the pediatric age group and occur in approximately 10% of children. Most seizures in children are provoked by somatic disorders originating outside the brain such as high fever, infection, syncope, head trauma, hypoxia, or toxins. To determine whether children with febrile convulsion have decreased serum zinc level when compared to normal children and children with fever without convulsions.Methods: The study included children admitted with bronchiolitis in between during the period of September 2018 to January 2019 at Department of Pediatrics, Raja Muthiah Medical College and Hospital. It is a case-control study. A sample size of 50 was selected for each group Totally 3 Groups, 1. Children with febrile convulsions,2. Children with fever without convulsions, 3. Normal Children.Results: The mean serum zinc level in children with febrile convulsions was 42.9 mcg/dl. The serum zinc level in children with fever and normal children was 70 mcg/dl and 71 mcg/dl respectively. On comparing the serum zinc level among the three groups statistical significance was obtained between children with febrile convulsions and the other two groups namely normal children and children with fever alone. Thus, decreased serum zinc level is a significant predisposing factor for febrile convulsions. By using Posthoc Multiple comparisons test we came to know that the Fever convulsion group is significantly different from fever and normal group. There is no significant difference between fever and normal group.Conclusions: This study shows that serum zinc levels are decreased in children with febrile convulsions, thus indicating that zinc deprivation plays a significant role in the pathogenesis of febrile convulsions.

scholarly journals The association between hypozincemia and aortic stenosis prevalence in hemodialysis patients: a single-center cross-sectional study

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Satoshi Matsui ◽  
Tomonaga Ameku ◽  
Daisuke Takada ◽  
Shinji Ono
Keyword(s):  
Aortic Stenosis ◽  
Serum Zinc ◽  
Cross Sectional Study ◽  
Zinc Level ◽  
Sectional Study ◽  
Single Center ◽  
Cross Sectional ◽  
Dialysis Vintage ◽  
Zinc Levels ◽  
Serum Zinc Levels

Abstract Background Hypozincemia contributes to phosphate-induced vascular calcification in model animals of renal failure, but the association between hypozincemia and aortic stenosis (AS) prevalence in patients with end-stage kidney disease remains unreported in clinical settings. Methods To investigate the association between hypozincemia and AS prevalence in patients undergoing hemodialysis, we designed a single-center cross-sectional study. Our outcome “AS” was defined as prevalence of moderate or severe AS or surgical history for AS. Depending on serum zinc levels, we divided patients undergoing hemodialysis into deciles. The association between hypozincemia and AS prevalence was analyzed via logistic regression adjusted for age, sex, dialysis vintage, diabetes history, serum albumin, and history of taking calcium-containing phosphate binder. Results Ninety-three patients undergoing hemodialysis were eligible. The mean serum zinc level was 61.3 ± 13.9 μg/dL. Twelve patients who belonged to 1st decile had serum zinc levels ≤ 48 μg/dL. Of these twelve patients, six patients (50 %) had AS. On the other hand, of eighty one patients who belonged to 2nd–10th deciles (serum zinc levels > 48 μg/dL), thirteen patients (16 %) had AS. Hypozincemia (serum zinc levels ≤ 48 μg/dL) was associated with AS prevalence (P = 0.038; odds ratio 4.43; 95% confidence interval 1.09–18.0). Conclusions AS was more prevalent in patients undergoing hemodialysis with severe hypozincemia in our cross-sectional study, although interventional studies are required to elucidate the benefit of zinc supplementation for AS progression.

scholarly journals Electrocardiographic ST-T Abnormities Are Associated With Stroke Risk in the REGARDS Study

Stroke ◽  
2020 ◽  
Vol 51 (4) ◽  
pp. 1100-1106
Author(s):  
Mitsuaki Sawano ◽  
Ya Yuan ◽  
Shun Kohsaka ◽  
Taku Inohara ◽  
Takeki Suzuki ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Racial Differences ◽  
Stroke Risk ◽  
Proportional Hazards ◽  
The United States ◽  
Incidence Rates ◽  
Cox Proportional Hazards ◽  
Hazard Ratio ◽  
Common Finding ◽  
Increased Risk

Background and Purpose— In previous studies, isolated nonspecific ST-segment and T-wave abnormalities (NSSTTAs), a common finding on ECGs, were associated with greater risk for incident coronary artery disease. Their association with incident stroke remains unclear. Methods— The REGARDS (Reasons for Geographic and Racial Differences in Stroke) study is a population-based, longitudinal study of 30 239 white and black adults enrolled from 2003 to 2007 in the United States. NSSTTAs were defined from baseline ECG using the standards of Minnesota ECG Classification (Minnesota codes 4-3, 4-4, 5-3, or 5-4). Participants with prior stroke, coronary heart disease, and major and minor ECG abnormalities other than NSSTTAs were excluded from analysis. Multivariable Cox proportional hazards regression was used to examine calculate hazard ratios of incident ischemic stroke by presence of baseline NSSTTAs. Results— Among 14 077 participants, 3111 (22.1%) had NSSTTAs at baseline. With a median of 9.6 years follow-up, 106 (3.4%) with NSSTTAs had ischemic stroke compared with 258 (2.4%) without NSSTTAs. The age-adjusted incidence rates (per 1000 person-years) of stroke were 2.93 in those with NSSTTAs and 2.19 in those without them. Adjusting for baseline age, sex, race, geographic location, and education level, isolated NSSTTAs were associated with a 32% higher risk of ischemic stroke (hazard ratio, 1.32 [95% CI, 1.05–1.67]). With additional adjustment for stroke risk factors, the risk of stroke was increased 27% (hazard ratio, 1.27 [95% CI, 1.00–1.62]) and did not differ by age, race, or sex. Conclusions— Presence of NSSTTAs in persons with an otherwise normal ECG was associated with a 27% increased risk of future ischemic stroke.

scholarly journals To study serum zinc levels in ischemic stroke patients

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Sushree S Rautaray ◽  
Purnima Dey Sarkar
Keyword(s):  
Ischemic Stroke ◽  
Serum Zinc ◽  
Stroke Patients ◽  
Zinc Levels ◽  
Serum Zinc Levels

scholarly journals Dysgeusia Due to Zinc Deficiency After Pancreaticoduodenectomy Requiring Continuous Intravenous Zinc Supplementation: a Case Report and Literature Review

2021 ◽  
Author(s):  
Hironobu Hata ◽  
Yojiro Ota ◽  
Katsuhiko Uesaka ◽  
Yutaka Yamazaki ◽  
Tsubasa Murata ◽  
...  
Keyword(s):  
Zinc Deficiency ◽  
Oral Surgery ◽  
Oral Care ◽  
Serum Zinc ◽  
Zinc Level ◽  
Normal Serum ◽  
Acrodermatitis Enteropathica ◽  
Proximal Jejunum ◽  
Zinc Levels ◽  
Serum Zinc Levels

Abstract Background: Zinc is mainly absorbed in the duodenum and proximal jejunum, which are removed during pancreaticoduodenectomy (PD). Little is known about the adverse oral events and skin disorders caused by zinc deficiency after PD. Herein, we reviewed studies regarding the development of zinc deficiency after PD and presented the case of a patient with zinc deficiency after PD, who required home intravenous zinc replacement.Case presentation: A 73-year-old woman with glossitis, taste disorder, and acrodermatitis enteropathica-like eruption on her fingers presented to the Division of Dentistry and Oral Surgery 69 days after PD. Her serum zinc level markedly decreased to 30 μg/dL. Oral zinc administration was inadequate to treat hypozincemia after PD; therefore, multi-trace elements were injected intravenously under readmission. Her serum zinc levels recovered, and the lesions gradually improved. Furthermore, a central venous port was implanted to maintain normal serum zinc levels, and she continued self-injecting zinc at home.Conclusion: Zinc deficiency after PD rarely occurs. The clinical oncologist community, including dentists responsible for the oral care of cancer patients, should be aware of dysgeusia associated with zinc deficiency after cancer surgery, as well as that induced by chemotherapy or head and neck radiation therapy.

scholarly journals Serum Zinc Levels and in Vivo Beta-Amyloid Deposition in the Human Brain

2021 ◽  
Author(s):  
Jee Wook Kim ◽  
Min Soo Byun ◽  
Dahyun Yi ◽  
Jun Ho Lee ◽  
Min Jung Kim ◽  
...  
Keyword(s):  
Serum Zinc ◽  
Beta Amyloid ◽  
Zinc Level ◽  
Amyloid Deposition ◽  
Serum Zinc Level ◽  
Positron Emission ◽  
Zinc Levels ◽  
The Relationship ◽  
Serum Zinc Levels

Abstract Background: Despite the known associations between zinc levels and Alzheimer’s disease (AD) dementia and related cognitive impairment, the underlying neuropathological links remain poorly understood. We tested the hypothesis that serum zinc level is associated with cerebral beta-amyloid protein (Ab) deposition. Additionally, we explored associations between serum zinc levels and other AD pathologies [i.e., tau deposition and AD-signature cerebral glucose metabolism (AD-CM)] and white matter hyperintensities (WMHs), which are measures of cerebrovascular injury. Methods: A total of 241 cognitively normal older adults between 55 and 90 years of age were enrolled. All the participants underwent comprehensive clinical assessments, serum zinc level measurement, and multimodal brain imaging, including Pittsburgh compound B-positron emission tomography (PET), AV-1451 PET, fluorodeoxyglucose (FDG)-PET, and magnetic resonance imaging. Zinc levels were stratified into three categories: < 80 µg/dL (low), 80 to 90 µg/dL (medium), and > 90 µg/dL (high). Results: A low serum zinc level was significantly associated with increased Ab retention. In addition, apolipoprotein E ε4 allele (APOE4) status moderated the association: the relationship between low zinc level and Ab retention was significant only in APOE4 carriers. Although a low zinc level appeared to reduce AD-CM, the relationship became insignificant on sensitivity analysis including only individuals with no nutritional deficiency. The serum zinc level was associated with neither tau deposition nor the WMH volume. Conclusions: Our findings suggest that decreased serum zinc levels are associated with elevation of brain amyloid deposition. In terms of AD prevention, more attention needs to be paid to the role of zinc.

Zinc deficiency in Japanese children with idiopathic short stature

2019 ◽  
Vol 32 (10) ◽  
pp. 1083-1087 ◽  
Author(s):  
Kei Yoshida ◽  
Tatsuhiko Urakami ◽  
Remi Kuwabara ◽  
Ichiro Morioka
Keyword(s):  
Short Stature ◽  
Zinc Deficiency ◽  
Serum Insulin ◽  
Serum Zinc ◽  
Zinc Level ◽  
Idiopathic Short Stature ◽  
Japanese Children ◽  
The Mean ◽  
Zinc Levels ◽  
Serum Zinc Levels

Abstract Background and methods We investigated the frequency of zinc deficiency in Japanese children with idiopathic short stature, and evaluated whether serum zinc levels correlated with background factors, including age and standard deviation scores (SDSs) for height and serum insulin-like growth factor (IGF)-1 levels. The study subjects consisted of 89 Japanese children. Results The mean serum zinc level was 79 ± 12 (49–108) μg/dL. Of all the children, 48.3% had a low zinc level, in the 60–80 μg/dL range, and 6.7% had zinc deficiency with a zinc level below 60 μg/dL. The majority with a low zinc level and zinc deficiency were asymptomatic other than for short stature. We found no significant correlations of serum zinc with age, or the SDSs for height and serum IGF-1 levels, in either the entire subject population or those with a zinc level below 80 μg/dL. Conclusions We found a low zinc level to be common in Japanese children with idiopathic short stature, whereas actual zinc deficiency was rare. However, other as yet unknown mechanisms not associated with the growth hormone (GH)-IGF-1 axis could be involved in growth retardation in idiopathic short stature.

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