The Value of Age-Friendly Public Health Systems in the Age-Friendly Ecosystem.

The United States population is living longer and healthier than ever. This enables our communities-and our society-to continue to benefit from our knowledge, experience, and energy as we age. The public health system is foundational for increasing life expectancy, and now it has the opportunity to further support older adult health and well-being. Trust for America's Health (TFAH), in partnership with The John A. Hartford Foundation, launched the age-friendly public health systems initiative in 2017 with the goal of raising awareness within the public health sector of its many potential roles in healthy aging. TFAH has worked with state and local departments of health to build capacity and expertise in older adult health and has provided guidance and technical assistance to expand this work across the U.S. TFAH now envisions a public health system that has healthy aging as a core function. This paper aims to describe why the public health sector should adopt healthy aging policies and practices, how this is being operationalized at the state and local levels, and the value of age-friendly public health systems within the age-friendly ecosystem.

Improving Older Adult Health by Operationalizing State Plans on Aging and Health Improvement.

The COVID-19 pandemic, a growing aging population, and inconsistent equity in aging have prompted more public health departments and agencies that focus on older adult services to establish partnerships to improve older adult health. To develop a model for strengthening and better aligning public health-aging partnerships, the Association of State and Territorial Health Officials (ASTHO) and Trust for America's Health engaged the Georgia Division of Aging Services (DAS) and Georgia Department of Public Health (DPH) to participate in a pilot project. ASTHO conducted an intensive qualitative analysis of Georgia's State Health Improvement Plan and State Plan on Aging to systematically assess shared priorities and differences. Through facilitated discussions about the results, prioritization, and planning, DAS and DPH developed an action plan with 2 priority areas to collaborate on and further their partnership. This process can be replicated by other jurisdictions seeking to enhance public health-aging collaboration.

Consideration of Both Discriminated and Generalized Responding When Teaching Children with Autism Abduction Prevention Skills.

We taught three children with autism how to respond to abduction lures presented by strangers. We then tested undesirable generalization of the safety response to matched instructions to leave by a familiar adult. Following training, all three participants engaged in the safety response across both strangers and familiar adults. Thus, we evaluated a set of procedures for establishing discriminated responding. Appropriate responding to instructions to leave by strangers versus familiar adults was achieved only after discrimination training. Discriminated responding occurred across a novel setting and maintained across 3 months; however, performance during stimulus generalization probes within community settings was variable. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s40617-020-00541-9.

Advancing Gerontological Nursing at the Intersection of Age-Friendly Communities, Health Systems, and Public Health.

Mounting efforts to improve care and promote healthy aging throughout society and across the care continuum have created unique opportunities for gerontological nursing practice. Population aging has invoked a multitude of responses among all levels of international and national organizations, foundations, health care, and government to meet the needs and promote preferences of older adults. Large-scale programs by the World Health Organization, The John A. Hartford Foundation, Institute for Health-care Improvement, and Trust for America's Health have galvanized to advance the momentum of age-friendly communities, health care, and public health. Gerontological nurses can leverage this growing interest in aging by enhancing their knowledge about age-friendly movements, influencing these movements with their expertise in evidence-based practices, and advancing their own competencies in caring for older adults in any setting. [Journal of Gerontological Nursing, 47(3), 13-17.].

Expanding Public Health Practice to Address Older Adult Health and Well-being.

CONTEXT: The older adult population in the United States is experiencing unprecedented growth and is accompanied by a parallel increase in the health challenges of these individuals. Public health has, historically, not played a large role in older adult health, but given its contributions to longevity, it makes sense for public health to now prioritize the health of this population. PROGRAM: With the goal of public health prioritization of healthy aging, Trust for America's Health, with support from The John A. Hartford Foundation, launched an initiative to demonstrate the crucial roles public health departments can play to improve the health of older adults. IMPLEMENTATION: An Age-Friendly Public Health Systems (AFPHS) Learning and Action Network was created to provide local health departments in Florida with training and technical assistance through in-person and virtual activities, as well as access to events, opportunities, and resources to increase expertise and capacity to address healthy aging. AFPHS Network participants attended monthly learning activities to enhance their capacity around data analysis, health equity, partnerships and collaboration, social determinants of health, and other age-friendly initiatives. EVALUATION: Network participants are being tracked on 13 key indicators to improve the health and well-being of older adults, including data collection and dissemination; ensuring emergency preparedness plans target older adults; and targeting older adult health needs in community health assessments. DISCUSSION: Trust for America's Health's AFPHS initiative demonstrates that state and local public health departments have crucial roles to play to improve the health and well-being of older adults through data collection and analysis, collaboration with aging sector stakeholders, and adapting policies and programs to become age-friendly.

Creating an Age-Friendly Public Health System.

BACKGROUND AND OBJECTIVES: The public health system in America-at all levels-has relatively few specialized initiatives that prioritize the health and well-being of older adults. And when public health does address the needs of older adults, it is often as an afterthought. In consultation with leaders in public health, health care, and aging, an innovative Framework for an Age-Friendly Public Health System (Framework) was developed outlining roles that public health could fulfill, in collaboration with aging services, to address the challenges and opportunities of an aging society. RESEARCH DESIGN AND METHODS: With leadership from Trust for America's Health and The John A. Hartford Foundation, the Florida Departments of Health and Elder Affairs are piloting the implementation of this Framework within Florida's county health departments and at the state level. The county health departments are expanding data collection efforts to identify older adult needs, creating new alliances with aging sector partners, coordinating with other agencies and community organizations to implement evidence-based programs and policies that address priority needs, and aligning efforts with the age-friendly communities and age-friendly health systems movements. RESULTS AND DISCUSSION AND IMPLICATIONS: The county health departments in Florida participating in the pilot are leveraging the Framework to expand public health practice, programs, and policies that address health services and health behaviors, social, and economic factors and environmental conditions that allow older adults to age in place and live healthier and more productive lives. The model being piloted in Florida can be tailored to meet the unique needs of each community and their older adult population.

Abnormal lipoprotein particles and cholesterol efflux capacity in patients with psoriasis.

OBJECTIVES: Psoriasis is a Th-1/17 mediated inflammatory disease associated with increased risk of cardiovascular disease (CVD). Inflammation may modulate lipoprotein particle number and directly impair HDL functions, in particular reverse cholesterol transport (RCT). We sought to study how chronic in vivo inflammation modulates lipoprotein particle composition using nuclear magnetic resonance spectroscopy (NMR) and HDL efflux in psoriasis. METHODS AND RESULTS: We prospectively enrolled a consecutive sample of patients with psoriasis (n = 122) and compared lipoprotein and metabolic risk factors to patients without psoriasis (n = 134). Fasting lipids, insulin, glucose were measured by standard assays, and lipoprotein concentration and size were measured by NMR. In a random subset (n = 100 each group), HDL efflux capacity was quantified using a validated ex vivo system involving the incubation of macrophages with apolipoprotein B-depleted serum from patients. Traditional lipid concentrations were similar in both groups except for HDL concentration which was lower in psoriasis (43 mg/dl (36-58) vs 50 (42-62), p < 0.01). However, NMR showed an atherogenic profile in psoriasis similar to that observed in diabetes, with significant increase in LDL particle concentration [1210.5 (1002-1498) vs 1115 (935-1291), p = 0.02] with decrease in LDL size [20.6 (20.3-21.1) vs 21.3 (20.6-21.1), p < 0.001] beyond CV risk factors and HOMA-IR (p = 0.001). Finally, HDL efflux capacity was lower in psoriasis compared to controls in fully adjusted models (beta -0.14, p = 0.001). CONCLUSIONS: These data support a more atherogenic lipoprotein profile by NMR and decreased HDL efflux capacity in psoriasis patients compared to controls beyond CVD risk factors. The abnormal lipoprotein particle composition and HDL efflux capacity in psoriasis may provide a link between psoriasis and CVD.

Effects of CETP inhibition on triglyceride-rich lipoprotein composition and apoB-48 metabolism.

Cholesteryl ester transfer protein (CETP) facilitates the transfer of HDL cholesteryl ester to triglyceride-rich lipoproteins (TRL). This study aimed to determine the effects of CETP inhibition with torcetrapib on TRL composition and apoB-48 metabolism. Study subjects with low HDL cholesterol (<40 mg/dl), either untreated (n = 9) or receiving atorvastatin 20 mg daily (n = 9), received placebo for 4 weeks, followed by torcetrapib 120 mg once daily for the next 4 weeks. A subset of the subjects not treated with atorvastatin participated in a third phase (n = 6), in which they received torcetrapib 120 mg twice daily for an additional 4 weeks. At the end of each phase, all subjects received a primed-constant infusion of [5,5,5-(2)H(3)]L-leucine, while in the constantly fed state, to determine the kinetics of TRL apoB-48 and TRL composition. Relative to placebo, torcetrapib markedly reduced TRL CE levels in all groups (≥-69%; P < 0.005). ApoB-48 pool size (PS) and production rate (PR) decreased in the nonatorvastatin once daily (PS: -49%, P = 0.007; PR: -49%, P = 0.005) and twice daily (PS: -30%, P = 0.01; PR: -27%, P = 0.13) cohorts. In the atorvastatin cohort, apoB-48 PS and PR, which were already lowered by atorvastatin, did not change with torcetrapib. Our findings indicate that CETP inhibition reduced plasma apoB-48 concentrations by reducing apoB-48 production but did not have this effect in subjects already treated with atorvastatin.

Inflammation modulates human HDL composition and function in vivo.

OBJECTIVES: Inflammation may directly impair HDL functions, in particular reverse cholesterol transport (RCT), but limited data support this concept in humans. METHODS AND RESULTS: We employed low-dose human endotoxemia to assess the effects of inflammation on HDL and RCT-related parameters in vivo. Endotoxemia induced remodelling of HDL with depletion of pre-ß1a HDL particles determined by 2-D gel electrophoresis (-32.2±9.3% at 24 h, p<0.05) as well as small (-23.0±5.1%, p<0.01, at 24 h) and medium (-57.6±8.0% at 16 h, p<0.001) HDL estimated by nuclear magnetic resonance (NMR). This was associated with induction of class II secretory phospholipase A2 (~36 fold increase) and suppression of lecithin:cholesterol acyltransferase activity (-20.8±3.4% at 24 h, p<0.01) and cholesterol ester transfer protein mass (-22.2±6.8% at 24 h, p<0.001). The HDL fraction, isolated following endotoxemia, had reduced capacity to efflux cholesterol in vitro from SR-BI and ABCA1, but not ABCG1 transporter cell models. CONCLUSIONS: These data support the concept that "atherogenic-HDL dysfunction" and impaired RCT occur in human inflammatory syndromes, largely independent of changes in plasma HDL-C and ApoA-I levels.

Mining the LIPG allelic spectrum reveals the contribution of rare and common regulatory variants to HDL cholesterol.

Genome-wide association studies (GWAS) have successfully identified loci associated with quantitative traits, such as blood lipids. Deep resequencing studies are being utilized to catalogue the allelic spectrum at GWAS loci. The goal of these studies is to identify causative variants and missing heritability, including heritability due to low frequency and rare alleles with large phenotypic impact. Whereas rare variant efforts have primarily focused on nonsynonymous coding variants, we hypothesized that noncoding variants in these loci are also functionally important. Using the HDL-C gene LIPG as an example, we explored the effect of regulatory variants identified through resequencing of subjects at HDL-C extremes on gene expression, protein levels, and phenotype. Resequencing a portion of the LIPG promoter and 5' UTR in human subjects with extreme HDL-C, we identified several rare variants in individuals from both extremes. Luciferase reporter assays were used to measure the effect of these rare variants on LIPG expression. Variants conferring opposing effects on gene expression were enriched in opposite extremes of the phenotypic distribution. Minor alleles of a common regulatory haplotype and noncoding GWAS SNPs were associated with reduced plasma levels of the LIPG gene product endothelial lipase (EL), consistent with its role in HDL-C catabolism. Additionally, we found that a common nonfunctional coding variant associated with HDL-C (rs2000813) is in linkage disequilibrium with a 5' UTR variant (rs34474737) that decreases LIPG promoter activity. We attribute the gene regulatory role of rs34474737 to the observed association of the coding variant with plasma EL levels and HDL-C. Taken together, the findings show that both rare and common noncoding regulatory variants are important contributors to the allelic spectrum in complex trait loci.

Dense genotyping of candidate gene loci identifies variants associated with high-density lipoprotein cholesterol.

BACKGROUND: Plasma levels of high-density lipoprotein cholesterol (HDL-C) are known to be heritable, but only a fraction of the heritability is explained. We used a high-density genotyping array containing single-nucleotide polymorphisms (SNPs) from HDL-C candidate genes selected on known biology of HDL-C metabolism, mouse genetic studies, and human genetic association studies. SNP selection was based on tagging SNPs and included low-frequency nonsynonymous SNPs. METHODS AND RESULTS: Association analysis in a cohort containing extremes of HDL-C (case-control, n=1733) provided a discovery phase, with replication in 3 additional populations for a total meta-analysis in 7857 individuals. We replicated the majority of loci identified through genome-wide association studies and present on the array (including ABCA1, APOA1/C3/A4/A5, APOB, APOE/C1/C2, CETP, CTCF-PRMT8, FADS1/2/3, GALNT2, LCAT, LILRA3, LIPC, LIPG, LPL, LRP4, SCARB1, TRIB1, ZNF664) and provide evidence that suggests an association in several previously unreported candidate gene loci (including ABCG1, GPR109A/B/81, NFKB1, PON1/2/3/4). There was evidence for multiple, independent association signals in 5 loci, including association with low-frequency nonsynonymous variants. CONCLUSIONS: Genetic loci associated with HDL-C are likely to harbor multiple, independent causative variants, frequently with opposite effects on the HDL-C phenotype. Cohorts comprising subjects at the extremes of the HDL-C distribution may be efficiently used in a case-control discovery of quantitative traits.

Comparison of high-density lipoprotein cholesterol to apolipoprotein A-I and A-II to predict coronary calcium and the effect of insulin resistance.

High-density lipoprotein (HDL) cholesterol and its apolipoproteins each capture unique lipid and cardiometabolic information important to risk quantification. It was hypothesized that metabolic factors, including insulin resistance and type 2 diabetes, would confound the association of HDL cholesterol with coronary artery calcification (CAC) and that apolipoprotein A-I (apoA-I) and/or apolipoprotein A-II (apoA-II) would add to HDL cholesterol in predicting CAC. Two community-based cross-sectional studies of white subjects were analyzed: the Penn Diabetes Heart Study (PDHS; n = 611 subjects with type 2 diabetes, 71.4% men) and the Study of Inherited Risk of Coronary Atherosclerosis (SIRCA; n = 803 subjects without diabetes, 52.8% men) using multivariable analysis of apoA-I, apoA-II, and HDL cholesterol stratified by diabetes status. HDL cholesterol was inversely associated with CAC after adjusting for age and gender in whites with type 2 diabetes (tobit ratio for a 1-SD increase in HDL cholesterol 0.58, 95% confidence interval [CI] 0.44 to 0.77, p <0.001) as well as those without diabetes (tobit ratio 0.72, 95% CI 0.59 to 0.88, p = 0.001). In contrast, apoA-I was a weaker predictor in subjects with (tobit ratio 0.64, 95% CI 0.45 to 0.90, p = 0.010) and without (tobit ratio 0.79, 95% CI 0.66 to 0.94, p = 0.010) diabetes, while apoA-II had no association with CAC. Control for metabolic variables, including triglycerides, waist circumference, and homeostasis model assessment of insulin resistance, attenuated these relations, particularly in subjects without diabetes. In likelihood ratio test analyses, HDL cholesterol added to apoA-I, apoA-II, and atherogenic apolipoprotein B lipoproteins but improved CAC prediction over metabolic factors only in subjects with diabetes. In conclusion, HDL cholesterol outperformed apoA-I and apoA-II in CAC prediction, but its association with CAC was attenuated by measures of insulin resistance.

Lipoprotein(a) is strongly associated with coronary artery calcification in type-2 diabetic women.

BACKGROUND: Lp(a), implicated in both atherogenesis and thrombosis pathways, varies significantly by demographic and metabolic factors, providing challenges for its use in Coronary Heart Disease (CHD) risk. The purpose of this study was to investigate whether type-2 diabetic subjects, relative to non-diabetics, might benefit more from Lp(a) measurement in the prediction of CHD risk, as measured by coronary artery calcium (CAC). METHODS: We performed cross sectional analyses in two community-based studies: the Penn Diabetes Heart Study [N = 1299 with type-2 diabetes] and the Study of Inherited Risk of Coronary Atherosclerosis [N = 860 without diabetes]. RESULTS: Blacks had 2-3 fold higher Lp(a) levels than whites in diabetic and non-diabetic samples. There was significant difference by gender (interaction p<0.001), but not race, in the association of Lp(a) with CAC in type-2 diabetic subjects. In age and race adjusted analysis of diabetic women, Lp(a) was associated with CAC [Tobit regression ratio 2.76 (95% CI 1.73-4.40), p<0.001]. Adjustment for exercise, medications, Framingham risk score, metabolic syndrome, BMI, CRP and hemoglobin A1c attenuated this effect, but the association of Lp(a) with CAC remained significant [2.25, (1.34-3.79), p = 0.002]. This relationship was further maintained in women stratified by race, or by the use of HRT or lipid lowering drugs. In contrast, Lp(a) was not associated with CAC in diabetic men, nor in non-diabetic men and women. CONCLUSIONS: Lp(a) is a strong independent predictor of CAC in type-2 diabetic women, regardless of race, but not in men. Lp(a) does not relate to CAC in men or women without type-2 diabetes.

Effect of rosiglitazone on HDL metabolism in subjects with metabolic syndrome and low HDL.

Treatment with the peroxisome proliferator-activated receptor γ agonist rosiglitazone has been reported to increase HDL-cholesterol (HDL-C) levels, although the mechanism responsible for this is unknown. We sought to determine the effect of rosiglitazone on HDL apolipoprotein A-I (apoA-I) and apoA-II metabolism in subjects with metabolic syndrome and low HDL-C. Subjects were treated with placebo followed by rosiglitazone (8 mg) once daily. At the end of each 8 week treatment, subjects (n = 15) underwent a kinetic study to measure apoA-I and apoA-II production rate (PR) and fractional catabolic rate. Rosiglitazone significantly reduced fasting insulin and high-sensitivity C-reactive protein (hsCRP) and increased apoA-II levels. Mean apoA-I and HDL-C levels were unchanged following rosiglitazone treatment, although there was considerable individual variability in the HDL-C response. Rosiglitazone had no effect on apoA-I metabolism, whereas the apoA-II PR was increased by 23%. The change in HDL-C in response to rosiglitazone was significantly correlated with the change in apoA-II concentration but not to changes in apoA-I, measures of glucose homeostasis, or hsCRP. Treatment with rosiglitazone significantly increased apoA-II production in subjects with metabolic syndrome and low HDL-C but had no effect on apoA-I metabolism. The change in HDL-C in response to rosiglitazone treatment was unrelated to effects on apoA-I, instead being related to the change in the metabolism of apoA-II.

Inflammation, coronary artery calcification and cardiovascular events in incident renal transplant recipients.

OBJECTIVE: Coronary artery calcification (CAC) predicts cardiovascular events in the general population. We conducted a prospective study to determine if inflammatory markers were predictive of CAC and if CAC predicted cardiovascular events and mortality in incident renal transplant recipients. METHODS: A prospective cohort of 112 asymptomatic incident renal transplant recipients who had no prior history of coronary artery revascularization or myocardial infarction had coronary calcifications measured early post-transplant and at least 18 months later by Agatston score and volume method. RESULTS: The mean CAC score was 367.7 (682.3). Inflammatory markers such as WBC and CRP were predictive of CAC severity. Recipients with cardiovascular events (n=11) or death (n=12) during the follow-up period had higher mean [675.1 (669.3) vs. 296.8 (669.0), p=0.02] and median [434.8 vs. 28.9, p=0.01] CAC score compared to those without them. Recipients with CAC score less than 100 had a better cumulative survival rate compared to the recipients with CAC score greater than 100 [95.1% vs. 82.3%, p=0.03]. We found a significant unadjusted and adjusted association between CAC score and cardiovascular events and mortality. A quarter (25.9%) of recipients had CAC progression. Coronary calcification progression also predicted cardiovascular events and mortality after adjustment for diabetes and dialysis vintage. CONCLUSION: CAC is prevalent in renal recipients and is predictive of cardiovascular events and mortality. Coronary calcification progression is common and predict clinical outcomes. Inflammatory markers are predictive of CAC severity at time of transplant, but are not predictive of future cardiovascular event or mortality.

On-statin cholesteryl ester transfer protein mass and risk of recurrent coronary events (from the pravastatin or atorvastatin evaluation and infection therapy-thrombolysis in myocardial infarction 22 [PROVE IT-TIMI 22] study).

Although cholesteryl ester transfer protein (CETP) plays an important role in human lipoprotein metabolism, its relation to coronary artery disease remains controversial. The present study evaluated the relation between on-statin CETP mass and recurrent coronary events. The plasma CETP mass, measured after 4 months of statin therapy, was quantified in 3,218 patients enrolled in the Pravastatin or Atorvastatin Evaluation and Infection Therapy-Thrombolysis in Myocardial Infarction 22 (PROVE IT-TIMI 22) study. Of the 3,218 patients, 150 experienced the combined end point of recurrent myocardial infarction or death from coronary causes during a mean follow-up of 1.8 years. An increasing on-statin CETP mass was inversely related to the risk of coronary events in both unadjusted (hazard ratio [HR] per SD increase 0.77, 95% confidence interval 0.65 to 0.92, p = 0.005) and fully adjusted (HR per SD increase 0.81, 95% confidence interval 0.67 to 0.98, p = 0.027) analyses that included traditional cardiovascular risk factors. A similar trend was observed across increasing CETP mass quartiles (p trend = 0.07). A significant interaction between the CETP mass and on-treatment low-density lipoprotein (LDL) cholesterol was noted (p interaction = 0.007). A CETP mass greater than the median was associated with a decreased risk in patients with LDL cholesterol less than the median of 80 mg/dl (HR 0.52, 95% confidence interval 0.31 to 0.89, p = 0.02), but not in patients with LDL cholesterol greater than the median. In conclusion, an increasing on-statin CETP mass was inversely related to the coronary outcomes in this large clinical trial-based cohort, particularly among those with low LDL cholesterol levels. This finding is consistent with CETP facilitating reverse cholesterol transport in the setting of robust LDL clearance and might have important implications for efforts to optimally target patients with pharmacologic CETP inhibition.

Short-term treatment with high-dose atorvastatin reduces LDL cholesterol but shows no anti-inflammatory effects in normolipidemic subjects with normal CRP levels.

The benefit in reducing cardiovascular risk with statins has been attributed both to cholesterol lowering and pleiotropic effects. These pleiotropic effects are thought to include attenuation of the inflammatory response due to reduced prenylation of proteins in the inflammatory cascade. We conducted studies in normolipidemic subjects to determine if treatment with high-dose (80 mg) atorvastatin could reduce circulating levels of inflammatory markers. We also determined whether high-dose atorvastatin affected the inflammatory response of monocytes stimulated with lipopolysaccharide (LPS) ex vivo. We found that treatment with atorvastatin rapidly and significantly reduced plasma low-density lipoprotein (LDL) cholesterol levels in subjects treated for 2 weeks. However, statin treatment had no discernible effect on plasma levels of the inflammatory markers high-sensitivity C-reactive protein (hsCRP), tumor necrosis factor (TNF)-alpha, or interleukin (IL-6) and no effect on the cytokine response of monocytes following ex vivo stimulation with LPS. High-dose atorvastatin treatment of normolipidemic subjects with normal C-reactive protein levels has no effect on the inflammatory response assessed by monocyte stimulation with LPS ex vivo despite significant reductions in LDL cholesterol levels.

Inflammation induces fibrinogen nitration in experimental human endotoxemia.

Elevated plasma fibrinogen is a prothrombotic risk factor for cardiovascular disease (CVD). Recent small studies report that fibrinogen oxidative modifications, specifically tyrosine residue nitration, can occur in inflammatory states and may modify fibrinogen function. HDL cholesterol is inversely related to CVD and suggested to reduce the oxidation of LDL cholesterol, but whether these antioxidant functions extend to fibrinogen modifications is unknown. We used a recently validated ELISA to quantify nitrated fibrinogen during experimental human endotoxemia (N=23) and in a cohort of healthy adults (N=361) who were characterized for inflammatory and HDL parameters as well as subclinical atherosclerosis measures, carotid artery intima-medial thickness (IMT) and coronary artery calcification (CAC). Fibrinogen nitration increased following endotoxemia and directly correlated with accelerated ex vivo plasma clotting velocity. In the observational cohort, nitrated fibrinogen was associated with levels of CRP and serum amyloid A. Nitrated fibrinogen levels were not lower with increasing HDL cholesterol and did not associate with IMT and CAC. In humans, fibrinogen nitration was induced during inflammation and was correlated with markers of inflammation and clotting function but not HDL cholesterol or subclinical atherosclerosis in our modest sample. Inflammation-induced fibrinogen nitration may be a risk factor for promoting CVD events.

Apolipoprotein B but not LDL cholesterol is associated with coronary artery calcification in type 2 diabetic whites.

OBJECTIVE: Evidence favors apolipoprotein B (apoB) over LDL cholesterol as a predictor of cardiovascular events, but data are lacking on coronary artery calcification (CAC), especially in type 2 diabetes, where LDL cholesterol may underestimate atherosclerotic burden. We investigated the hypothesis that apoB is a superior marker of CAC relative to LDL cholesterol. RESEARCH DESIGN AND METHODS: We performed cross-sectional analyses of white subjects in two community-based studies: the Penn Diabetes Heart Study (N = 611 type 2 diabetic subjects, 71.4% men) and the Study of Inherited Risk of Coronary Atherosclerosis (N = 803 nondiabetic subjects, 52.8% men) using multivariate analysis of apoB and LDL cholesterol stratified by diabetes status. RESULTS: In type 2 diabetes, apoB was associated with CAC after adjusting for age, sex, and medications [Tobit regression ratio of increased CAC for 1-SD increase in apoB; 1.36 (95% CI 1.06-1.75), P = 0.016] whereas LDL cholesterol was not [1.09 (0.85-1.41)]. In nondiabetic subjects, both were associated with CAC [apoB 1.65 (1.38-1.96), P < 0.001; LDL cholesterol 1.56 (1.30-1.86), P < 0.001]. In combined analysis of diabetic and nondiabetic subjects, apoB provided value in predicting CAC scores beyond LDL cholesterol, total cholesterol, the total cholesterol/HDL cholesterol and triglyceride/HDL cholesterol ratios, and marginally beyond non-HDL cholesterol. CONCLUSIONS: Plasma apoB, but not LDL cholesterol, levels were associated with CAC scores in type 2 diabetic whites. ApoB levels may be particularly useful in assessing atherosclerotic burden and cardiovascular risk in type 2 diabetes.