20 results on '"Hak, A.E."'
Search Results
2. Porto-sinusoidal vascular disorder and nephrotic-range proteinuria due to venous vasculitis in Behçet's disease
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van der Houwen, T.B., Annink, M.E., Roelofs, J.J.T.H., Takkenberg, R.B., van Laar, J.A.M., van der Weerd, N.C., Hak, A.E., and Kwakernaak, A.J.
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- 2024
- Full Text
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3. Clinical Symptoms, Laboratory Parameters and Long-Term Follow-up in a National DADA2 Cohort.
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Andriessen, M.V.E., Legger, G.E., Bredius, R.G.M., Gijn, M.E. van, Hak, A.E., Muller, P.C.E.H., Kamphuis, S., Klouwer, F.C.C., Kuijpers, T.W., Leavis, H.L., Nierkens, S., Rutgers, A., Veken, L.T. van der, Well, G.T.J. van, Mulders-Manders, C.M., Montfrans, J.M. van, Andriessen, M.V.E., Legger, G.E., Bredius, R.G.M., Gijn, M.E. van, Hak, A.E., Muller, P.C.E.H., Kamphuis, S., Klouwer, F.C.C., Kuijpers, T.W., Leavis, H.L., Nierkens, S., Rutgers, A., Veken, L.T. van der, Well, G.T.J. van, Mulders-Manders, C.M., and Montfrans, J.M. van
- Abstract
Contains fulltext : 296537.pdf (Publisher’s version ) (Open Access), Deficiency of adenosine deaminase-2 (DADA2) is an autosomal recessive autoinflammatory disease with an extremely variable disease presentation. This paper provides a comprehensive overview of the Dutch DADA2 cohort. We performed a retrospective cohort study in 29 ADA2-deficient patients from 23 families with a median age at inclusion of 26 years. All patients had biallelic pathogenic variants in the ADA2 gene. The most common clinical findings included cutaneous involvement (79.3%), (hepato)splenomegaly (70.8%) and recurrent infections (58.6%). Stroke was observed in 41.4% of the patients. The main laboratory abnormalities were hypogammaglobulinemia and various cytopenias. Patients presented most often with a mixed phenotype involving vasculopathy, immunodeficiency and hematologic manifestations (62.1%). In this cohort, malignancies were reported in eight patients (27.6%), of whom five presented with a hematologic malignancy and two with a basal cell carcinoma. Four patients developed hemophagocytic lymphohistiocytosis (HLH) or an HLH-like episode, of whom three passed away during or shortly after the occurrence of HLH. TNF-inhibitors (TNFi) were effective in treating vasculopathy-associated symptoms and preventing stroke, but were hardly effective in the treatment of hematologic manifestations. Three patients underwent hematopoietic cell transplantation and two of them are doing well with complete resolution of DADA2-related symptoms. The overall mortality in this cohort was 17.2%. In conclusion, this cohort describes the clinical, genetic and laboratory findings of 29 Dutch DADA2 patients. We describe the occurrence of HLH as a life-threatening disease complication and report a relatively high incidence of malignancies and mortality.
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- 2023
4. Identifying relevant determinants of in-hospital time to diagnosis for ANCA-associated vasculitis patients
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Dirikgil, E., Tas, S.W., Verburgh, C.A., Soonawala, D., Hak, A.E., Remmelts, H.H.F., IJpelaar, D., Laverman, G.D., Rutgers, A., Laar, J.M. van, Moens, H.J.B., Verhoeven, P.M.J., Rabelink, T.J., Bos, W.J.W., Teng, Y.K.O., Autoimmune Research Collaboration Hub (ARCH) study group, Translational Immunology Groningen (TRIGR), Experimental Immunology, Clinical Immunology and Rheumatology, AII - Inflammatory diseases, and AII - Amsterdam institute for Infection and Immunity
- Subjects
DAMAGE ,WEGENERS-GRANULOMATOSIS ,Rheumatology ,patient trajectory ,pauci-immune glomerulonephritis ,CYCLOPHOSPHAMIDE ,MANAGEMENT ,RITUXIMAB ,REMISSION ,health-care usage ,ANTIBODY-ASSOCIATED VASCULITIS ,ANCA-associated vasculitis ,diagnostic delay - Abstract
Objectives Diagnosing patients with ANCA-associated vasculitis (AAV) can be challenging owing to its rarity and complexity. Diagnostic delay can have severe consequences, such as chronic organ damage or even death. Given that few studies have addressed diagnostic pathways to identify opportunities to improve, we performed a clinical audit to evaluate the diagnostic phase. Methods This retrospective, observational study of electronic medical records data in hospitals focused on diagnostic procedures during the first assessment until diagnosis. Results We included 230 AAV patients from nine hospitals. First assessments were mainly performed by a specialist in internal medicine (52%), pulmonology (14%), ENT (13%) or rheumatology (10%). The overall median time to diagnosis was 13 [interquartile range: 2–49] days, and in patients primarily examined by a specialist in internal medicine it was 6 [1–25] days, rheumatology 14 [4–45] days, pulmonology 15 [5–70] days and ENT 57 [16–176] days (P = 0.004). Twenty-two of 31 (71%) patients primarily assessed by a specialist in ENT had non-generalized disease, of whom 14 (64%) had ENT-limited activity. Two hundred and nineteen biopsies were performed in 187 patients (81%). Histopathological support for AAV was observed in 86% of kidney biopsies, 64% of lung biopsies and 34% of ENT biopsies. Conclusion In The Netherlands, AAV is diagnosed and managed predominantly by internal medicine specialists. Diagnostic delay was associated with non-generalized disease and ENT involvement at presentation. Additionally, ENT biopsies had a low diagnostic yield, in contrast to kidney and lung biopsies. Awareness of this should lead to more frequent consideration of AAV and early referral for a multidisciplinary approach when AAV is suspected.
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- 2022
5. Acrocyanosis after neoadjuvant ipilimumab plus nivolumab: A case report
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Reijers, I.L.M., Hilhorst, M., Tan, M., Klarenbeek, P.L., Hak, A.E., Blank, C.U., Clinical Immunology and Rheumatology, and AII - Inflammatory diseases
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- 2020
6. Bone Mineral Density and the Risk of Peripheral Arterial Disease: The Rotterdam Study
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van der Klift, M., Pols, H.A.P., Hak, A.E., Witteman, J.C.M., Hofman, A., and de Laet, C.E.D.H.
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- 2002
- Full Text
- View/download PDF
7. The increase in cholestrol with menopause is associated with the apolipoprotein E genotype
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Hak, A.E., Witteman, J.C., Hugens, W., Keyzer, J.J., Pop, V.J.M., Uitterlinden, A.G., Pols, H.A., and Medical and Clinical Psychology
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ComputingMilieux_LEGALASPECTSOFCOMPUTING - Published
- 2004
8. Menopause, postmenopausal hormone use and risk of incident gout
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Hak, A.E. (Liesbeth), Curhan, G.C. (Gary), Grodstein, F. (Francine), Choi, H.K. (Hyon), Hak, A.E. (Liesbeth), Curhan, G.C. (Gary), Grodstein, F. (Francine), and Choi, H.K. (Hyon)
- Abstract
Objective: To prospectively study the relation between menopause, postmenopausal hormone use and risk of gout, since female sex hormones have been postulated to decrease gout risk among women. Methods: In the Nurses' Health Study, the association between menopause, age at menopause, postmenopausal hormone use and risk of self-reported physician-diagnosed incident gout among 92 535 women without gout at baseline was examined. Multivariate proportional hazards regression analysis was used to adjust for other risk factors for gout such as age, body mass index, diuretic use, hypertension, alcohol intake and dietary factors. Results: During 16 years of follow-up (1 240 231 person-years), 1703 incident gout cases were recorded. The incidence rate of gout increased from 0.6 per 1000 person-years in women <45 years of age to 2.5 in women ≥75 years of age (p for trend <0.001). Compared with premenopausal women, postmenopausal women had a higher risk of incident gout (multivariate-adjusted relative risk (RR)=1.26; 95% confidence interval (CI) 1.03 to 1.55). Among women with a natural menopause, women with age at menopause >45 years had a RR of 1.62 (95% CI 1.12 to 2.33) of gout compared with women with age at menopause 50-54 years. Postmenopausal hormone users had a reduced risk of gout (RR=0.82; 95% CI 0.70 to 0.96). Conclusion: These prospective findings indicate that menopause increases the risk of gout, whereas postmenopausal hormone therapy modestly reduces gout risk.
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- 2010
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9. Menopause, postmenopausal hormone use and serum uric acid levels in US women--the Third National Health and Nutrition Examination Survey.
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Hak, A.E. (Liesbeth), Choi, H.K. (Hyon), Hak, A.E. (Liesbeth), and Choi, H.K. (Hyon)
- Abstract
INTRODUCTION: Despite the substantial prevalence of gout in the ageing female population, female hormonal influence has not been comprehensively examined. We evaluated and quantified the potential independent association between menopause, postmenopausal hormone use and serum uric acid levels in a nationally representative sample of women. METHODS: Using data from 7662 women aged 20 years and older in the Third National Health and Nutrition Examination Survey (1988 to 1994), we examined the relation between menopause, postmenopausal hormone use and serum uric acid levels. We used multivariate linear regression to adjust for other risk factors for hyperuricaemia such as dietary factors, age, adiposity, alcohol use, renal function, hypertension and diuretic use. RESULTS: Menopause was associated with higher serum uric acid levels. After adjusting for covariates, serum uric acid levels among women with natural menopause and surgical menopause were greater than premenopausal women by 0.34 mg/dl (95% confidence interval [CI], 0.19 to 0.49) and 0.36 mg/dl (95% CI, 0.14 to 0.57), respectively. Current postmenopausal hormone use was associated with a lower serum uric acid level among postmenopausal women (multivariate difference, 0.24 mg/dl [95% CI, 0.11 to 0.36]). The serum uric acid levels increased with increasing age categories (crude difference between 20 to 29 years and 70 years and over = 1.03 mg/dl, p for trend < 0.001), but this increase was not present after adjusting for other covariates (p for trend = 0.66). CONCLUSIONS: These findings from a nationally representative sample of US women indicate that menopause is independently associated with higher serum uric acid levels, whereas postmenopausal hormone use is associated with lower uric acid levels among postmenopausal women. The age-associated increase in serum uric acid levels in women may be explained by menopause and other age-related factors.
- Published
- 2008
10. Menopause, postmenopausal hormone use and serum uric acid levels in US women - The Third National Health and Nutrition Examination Survey
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Hak, A.E. (Elisabeth), Choi, H.K. (Hyon), Hak, A.E. (Elisabeth), and Choi, H.K. (Hyon)
- Abstract
Introduction: Despite the substantial prevalence of gout in the ageing female population, female hormonal influence has not been comprehensively examined. We evaluated and quantified the potential independent association between menopause, postmenopausal hormone use and serum uric acid levels in a nationally representative sample of women. Methods: Using data from 7662 women aged 20 years and older in the Third National Health and Nutrition Examination Survey (1988 to 1994), we examined the relation between menopause, postmenopausal hormone use and serum uric acid levels. We used multivariate linear regression to adjust for other risk factors for hyperuricaemia such as dietary factors, age, adiposity, alcohol use, renal function, hypertension and diuretic use. Results: Menopause was associated with higher serum uric acid levels. After adjusting for covariates, serum uric acid levels among women with natural menopause and surgical menopause were greater than premenopausal women by 0.34 mg/dl (95% confidence interval [CI], 0.19 to 0.49) and 0.36 mg/dl (95% CI, 0.14 to 0.57), respectively. Current postmenopausal hormone use was associated with a lower serum uric acid level among postmenopausal women (multivariate difference, 0.24 mg/dl [95% CI, 0.11 to 0.36]). The serum uric acid levels increased with increasing age categories (crude difference between 20 to 29 years and 70 years and over = 1.03 mg/dl, p for trend < 0.001), but this increase was not present after adjusting for other covariates (p for trend = 0.66). Conclusions: These findings from a nationally representative sample of US women indicate that menopause is independently associated with higher serum uric acid levels, whereas postmenopausal hormone use is associated with lower uric acid levels among postmenopausal women. The age-associated increase in serum uric acid levels in women may be explained by menopause and other age-related factors.
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- 2008
- Full Text
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11. Gender differences in cardiovascular disease : an epidemiologic study of endocrine factors
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Hak, A.E. (Liesbeth) and Hak, A.E. (Liesbeth)
- Abstract
The initial interst in coronary- heart disease research in the 1950s centered primarily on men because of its emergence as a major cause of morbidity and mortality in men around middle age. In women, the incidence of coronary heart disease is low at younger age and increases after middle age, though the occurrence remains lower in women than in men at all ages. The fact that cardiovascular disease is the major cause of morbidity and mortality in women has been recognized already for many years and the last decade much effort has been put in describing and studying cardiovascular disease in women. Despite the research that has been carried out on the differences in cardiovascular disease between the sexes, the gender gap in coronary- heart disease occurrence is not completely understood until now. 1 The work presented in this thesis aims at gaining insight into gender specific issues of cardiovascular disease and the cause of the rising incidence of cardiovascular disease in women after middle age by studying putative endocrine and metabolic risk factors. Data from various population-based studies were used to study these issues. In chapter 2, studies on classical cardiovascular disease risk factors attenuating the female advantage with regard to cardiovascular disease occurrence are presented. Chapter 3 contains studies on sex specific determinants of cardiovascular disease with a focus on sex steroids. In chapter 4, studies on alternative endocrine cardiovascular disease risk factors in postmenopausal women are described. In chapter 5, the results described in this thesis are placed in a broader context, some methodological considerations are discussed, and views on further research regarding gender specific issues of cardiovascular disease are put forward.
- Published
- 2002
12. Low levels of endogenous androgens increase the risk of atherosclerosis in elderly men: the Rotterdam study
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Hak, A.E. (Liesbeth), Witteman, J.C.M. (Jacqueline), Jong, F.H. (Frank) de, Geerlings, M.I. (Miriam), Pols, H.A.P. (Huib), Hofman, A. (Albert), Hak, A.E. (Liesbeth), Witteman, J.C.M. (Jacqueline), Jong, F.H. (Frank) de, Geerlings, M.I. (Miriam), Pols, H.A.P. (Huib), and Hofman, A. (Albert)
- Abstract
In both men and women, circulating androgen levels decline with advancing age. Until now, results of several small studies on the relationship between endogenous androgen levels and atherosclerosis have been inconsistent. In the population-based Rotterdam Study, we investigated the association of levels of dehydroepiandrosterone sulfate (DHEAS) and total and bioavailable testosterone with aortic atherosclerosis among 1,032 nonsmoking men and women aged 55 yr and over. Aortic atherosclerosis was assessed by radiographic detection of calcified deposits in the abdominal aorta, which have been shown to reflect intimal atherosclerosis. Relative to men with levels of total and bioavailable testosterone in the lowest tertile, men with levels of these hormones in the highest tertile had age-adjusted relative risks of 0.4 [95% confidence interval (CI), 0.2-0.9] and 0.2 (CI, 0.1-0.7), respectively, for the presence of severe aortic atherosclerosis. The corresponding relative risks for women were 3.7 (CI, 1.2-11.6) and 2.3 (CI, 0.7-7.8). Additional adjustment for cardiovascular disease risk factors did not materially affect the results in men, whereas in women the associations diluted. Men with levels of total and bioavailable testosterone in subsequent tertiles were also protected against progression of aortic atherosclerosis measured after 6.5 yr (SD +/- 0.5 yr) of follow-up (P for trend = 0.02). No clear association between levels of DHEAS and presence of severe aortic atherosclerosis was found, either in men or in women. In men, a protective effect of higher levels of DHEAS against progression of aortic atherosclerosis was suggested, but the corresponding test for trend did not reach statistical significance. In conclusion, we found an independent inverse association between levels of testosterone and aortic atherosclerosis in men. In women, positive associations between levels of testosterone and aortic atherosclerosis were largely due to adverse cardiovascular disease ri
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- 2002
13. Markers of inflammation and cellular adhesion molecules in relation to insulin resistance in nondiabetic elderly: the Rotterdam study
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Hak, A.E. (Liesbeth), Pols, H.A.P. (Huib), Stehouwer, C.D. (Coen), Meijer, J. (John), Kiliaan, A.J. (Amanda), Breteler, M.M.B. (Monique), Witteman, J.C.M. (Jacqueline), Hofman, A. (Albert), Hak, A.E. (Liesbeth), Pols, H.A.P. (Huib), Stehouwer, C.D. (Coen), Meijer, J. (John), Kiliaan, A.J. (Amanda), Breteler, M.M.B. (Monique), Witteman, J.C.M. (Jacqueline), and Hofman, A. (Albert)
- Abstract
Insulin resistance, which is highly prevalent in the elderly, is suggested to be accompanied by an increased acute phase response. Until now, it is unclear whether cellular adhesion molecules are involved in the clustering of insulin resistance. In the present study, we examined the relationship of insulin resistance (measured by postload insulin) with levels of markers of inflammation and cellular adhesion molecules in a random sample of 574 nondiabetic elderly men and women participating in the Rotterdam Study. Associations were assessed by regression analysis, with ln-insulin as the dependent variable [regression coefficient (95% confidence interval)]. In our population, insulin was strongly and significantly (P < 0.001) associated with the markers of inflammation C-reactive protein [1.52 (0.96-2.08)], alpha-1-antichymotrypsin [1.25 (0.82-1.69)], and IL-6 [2.60 (1.69-3.52)], adjusted for age and gender. Associations weakened, to some extent, after additional adjustment for measures of obesity, smoking, and cardiovascular disease. Insulin was associated with the soluble intercellular adhesion molecule 1 [2.22 (1.29-3.16; P < 0.001)], whereas no association with the soluble vascular cell adhesion molecule 1 was found. The strength of the associations of insulin with C-reactive protein, alpha-1-antichymotrypsin, IL-6, and soluble intercellular adhesion molecule 1, as assessed by standardized regression coefficients, was comparable with the strength of the associations of insulin with high-density lipoprotein cholesterol, body mass index, and waist-to-hip ratio. The results of this population-based study indicate that low-grade inflammation and the cellular adhesion molecule soluble intercellular adhesion molecule 1 are an integral part of insulin resistance in nondiabetic elderly. These factors may contribute to the well-known relationship between insulin resistance and cardiovascular disease risk and might potentially become therapeutic targets in insulin resistant
- Published
- 2001
14. Progression of aortic calcification is associated with metacarpal bone loss during menopause: a population-based longitudinal study
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Hak, A.E. (Liesbeth), Pols, H.A.P. (Huib), Hemert, A.M. (Bert) van, Witteman, J.C.M. (Jacqueline), Hofman, A. (Albert), Hak, A.E. (Liesbeth), Pols, H.A.P. (Huib), Hemert, A.M. (Bert) van, Witteman, J.C.M. (Jacqueline), and Hofman, A. (Albert)
- Abstract
offerosclerosis and osteoporosis are major causes of morbidity and mortality in postmenopausal women and have been suggested to be associated. No study has examined whether progression of atherosclerotic calcification is associated with bone loss. In the present study, we examined progression of aortic calcification, diagnosed by radiographic detection of calcified deposits in the abdominal aorta, in relation to metacarpal bone loss, as assessed by metacarpal radiogrammetry, during menopause. Initially premenopausal women (n=236), aged 45 to 57 years at baseline, were followed for 9 years. We additionally assessed the cross-sectional association between the extent of aortic calcification and metacarpal bone mass and density in 720 postmenopausal women. Twenty-five percent of women going through menopause showed progression of aortic calcification. The average loss of metacarpal bone mass among women with progression of aortic calcification was 3.2 mm(2), and their loss of metacarpal bone density was 7.2 mm(2) %, whereas in women without progression of aortic calcification, these losses were 2.0 mm(2) and 5.6 mm(2) %, respectively, adjusted for age and years of follow-up (P<0.05). Additional adjustment for age at menopause, body mass index, blood pressure, smoking, diabetes mellitus, and use of hormone replacement therapy, thiazide, and loop diuretics did not influence these results. In postmenopausal women, a graded inverse cross-sectional association between the extent of aortic calcification and metacarpal bone mass and density was found. In conclusion, our results indicate that progression of atherosclerotic calcification is associated with increased bone loss in women during menopause.
- Published
- 2000
15. Subclinical hypothyroidism is an independent risk factor for atherosclerosis and myocardial infarction in elderly women: the Rotterdam Study
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Hak, A.E. (Liesbeth), Pols, H.A.P. (Huib), Visser, T.J. (Theo), Drexhage, H.A. (Hemmo), Witteman, J.C.M. (Jacqueline), Hofman, A. (Albert), Hak, A.E. (Liesbeth), Pols, H.A.P. (Huib), Visser, T.J. (Theo), Drexhage, H.A. (Hemmo), Witteman, J.C.M. (Jacqueline), and Hofman, A. (Albert)
- Abstract
BACKGROUND: Overt hypothyroidism has been found to be associated with cardiovascular disease. Whether subclinical hypothyroidism and thyroid autoimmunity are also risk factors for cardiovascular disease is controversial. OBJECTIVE: To investigate whether subclinical hypothyroidism and thyroid autoimmunity are associated with aortic atherosclerosis and myocardial infarction in postmenopausal women. DESIGN: Population-based cross-sectional study. SETTING: A district of Rotterdam, The Netherlands. PARTICIPANTS: Random sample of 1149 women (mean age +/- SD, 69.0 +/- 7.5 years) participating in the Rotterdam Study. MEASUREMENTS: Data on thyroid status, aortic atherosclerosis, and history of myocardial infarction were obtained at baseline. Subclinical hypothyroidism was defined as an elevated thyroid-stimulating hormone level (>4.0 mU/L) and a normal serum free thyroxine level (11 to 25 pmol/L [0.9 to 1.9 ng/dL]). In tests for antibodies to thyroid peroxidase, a serum level greater than 10 IU/mL was considered a positive result. RESULTS: Subclinical hypothyroidism was present in 10.8% of participants and was associated with a greater age-adjusted prevalence of aortic atherosclerosis (odds ratio, 1.7 [95% CI, 1.1 to 2.6]) and myocardial infarction (odds ratio, 2.3 [CI, 1.3 to 4.0]). Additional adjustment for body mass index, total and high-density lipoprotein cholesterol level, blood pressure, and smoking status, as well as exclusion of women who took beta-blockers, did not affect these estimates. Associations were slightly stronger in women who had subclinical hypothyroidism and antibodies to thyroid peroxidase (odds ratio for aortic atherosclerosis, 1.9 [CI, 1.1 to 3.6]; odds ratio for myocardial infarction, 3.1 [CI, 1.5 to 6.3]). No association was found between thyroid autoimmunity itself and
- Published
- 2000
16. Associations of C-reactive protein with measures of obesity, insulin resistance, and subclinical atherosclerosis in healthy, middle-aged women
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Hak, A.E. (Liesbeth), Stehouwer, C.D. (Coen), Bots, M.L. (Michiel), Polderman, K.H., Schalkwijk, C.G. (Casper), Westendorp, I.C.D. (Iris), Witteman, J.C.M. (Jacqueline), Hofman, A. (Albert), Hak, A.E. (Liesbeth), Stehouwer, C.D. (Coen), Bots, M.L. (Michiel), Polderman, K.H., Schalkwijk, C.G. (Casper), Westendorp, I.C.D. (Iris), Witteman, J.C.M. (Jacqueline), and Hofman, A. (Albert)
- Abstract
Obesity, the insulin resistance syndrome, and atherosclerosis are closely linked and may all be determinants of an increased acute-phase response. In this study, we examined the relationship of C-reactive protein (CRP) with measures of obesity, variables of the insulin resistance syndrome, and intima-media thickness of the common carotid arteries in 186 healthy, middle-aged women selected from the general population. Associations were assessed by regression analysis. CRP was strongly associated with body mass index (BMI) and waist circumference. CRP was also associated with other variables of the insulin resistance syndrome, including blood pressure, insulin, high density lipoprotein cholesterol, triglycerides, apolipoprotein A1 (inversely), plasminogen activator inhibitor-1 antigen, and tissue-type plasminogen activator antigen. Associations between CRP and the variables of the insulin resistance syndrome disappeared after controlling for BMI but remained significant for plasminogen activator inhibitor-1 antigen only. The association of CRP with common carotid artery intima-media thickness was weak and limited to ever-smokers. BMI explained 29.7% of the variance of CRP, whereas common carotid artery intima-media thickness explained only 3.7%. The results of this population-based study indicate that adiposity is strongly associated with CRP in healthy, middle-aged women. In this population, BMI accounted for the relationship between CRP and other variables of the insulin resistance syndrome. Further studies should determine whether losing weight ameliorates the inflammatory state.
- Published
- 1999
17. Plasma carotenoids and tocopherols and risk of myocardial infarction in a low-risk population of US male physicians
- Author
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Hak, A.E, primary, Stampfer, M.J, additional, and Campos, H, additional
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- 2004
- Full Text
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18. Comparison Between Measures of Atherosclerosis and Risk of Stroke
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Hollander, M., primary, Hak, A.E., additional, Koudstaal, P.J., additional, Bots, M.L., additional, Grobbee, D.E., additional, Hofman, A., additional, Witteman, J.C.M., additional, and Breteler, M.M.B., additional
- Published
- 2003
- Full Text
- View/download PDF
19. The NET effect of novel treatments in lupus nephritis
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Kraaij, T., Kooten, C. van, Rabelink, T.J., Teng, Y.K.O., Huizinga, T.W.J., Bajema, I.M., Hak, A.E., Berger, S.P., and Leiden University
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Cell death ,Lupus nephritis ,Neutrophils ,SLE ,Rituximab ,ANCA-associated vasculitis ,Neutrophil extracellular traps ,Belimumab - Abstract
First, we described a method to quantify NETs which has the potential to monitor autoantigen load in the setting of autoimmune diseases where NETs play a role in its pathophysiology. The use of confocal microscopy with multiple z-stacks, makes it a sensitive method. We provided a context of how NETs can be quantified in SLE and AAV. We demonstrated that not all NETs are created equally and translation of NET formation to a digital quantification creates a narrow view. We showed higher ex vivo NET formation in AAV patients with active disease compared to AAV patients with an underlying infection supporting that excessive NET formation is an autoimmune phenomenon. Also, we demonstrated that the observed excessive NET formation is independent of ANCAs.In the next part of this thesis, we focused on new treatments in lupus nephritis. Most importantly, the results of the Sybiose study are shown; a phase 2 proof-of-concept study that included 15 patients with severe, refractory SLE treated with rituximab and belimumab. We showed that RTX+BLM has the ability to reduce autoantibodies, thereby indirectly reducing excessive NET formation in SLE, presumably due to the targeting of autoreactive B cells. Further, we observed a clinical response in our patients while tapering immunosuppressive medication.
- Published
- 2020
20. Prognosis in small vessel vasculitis
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Daalen, E.E. van, Bruijn, J.A., Bajema, I.M., Smit, V.T.H.B.M., Goldschmeding, R., Hak, A.E., and Leiden University
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Glomerulonephritis ,Anti-GBM disease ,Histopathological classification ,ANCA-associated vasculitis ,Renal biopsy ,Prognosis ,Rituximab - Abstract
ANCA-associated vasculitis (AAV) is a systemic autoimmune disease which is associated with increased risk of mortality and morbidity. The outcomes of patients with AAV have improved substantially as a consequence of earlier detection of the disease and more sophisticated therapy regimens. Despite these advances, the disease influences the lives of patients substantially. Therefore, this thesis focused on prognosis and outcomes with the aim to further improve the outcomes of patients with AAV.
- Published
- 2018
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