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1.
BMJ Open ; 14(4): e074064, 2024 Apr 19.
Article in English | MEDLINE | ID: mdl-38643002

ABSTRACT

OBJECTIVES: Identify the windows of opportunity for the diagnosis of chronic kidney disease (CKD) and the prevention of its adverse outcomes and quantify the potential population gains of such prevention. DESIGN AND SETTING: Observational, population-wide study of residents in the Stockholm and Skåne regions of Sweden between 1 January 2015 and 31 December 2020. PARTICIPANTS: All patients who did not yet have a diagnosis of CKD in healthcare but had CKD according to laboratory measurements of CKD biomarkers available in electronic health records. OUTCOME MEASURES: We assessed the proportions of the patient population that received a subsequent diagnosis of CKD in healthcare, that used guideline-directed pharmacological therapy (statins, renin-angiotensin aldosterone system inhibitors (RAASi) and/or sodium-glucose cotransporter-2 inhibitors (SGLT2i)) and that experienced adverse outcomes (all-cause mortality, cardiovascular mortality or major adverse cardiovascular events (MACE)). The potential to prevent adverse outcomes in CKD was assessed using simulations of guideline-directed pharmacological therapy in untreated subsets of the study population. RESULTS: We identified 99 382 patients with undiagnosed CKD during the study period. Only 33% of those received a subsequent diagnosis of CKD in healthcare after 5 years. The proportion that used statins or RAASi was of similar size to the proportion that didn't, regardless of how advanced their CKD was. The use of SGLT2i was negligible. In simulations of optimal treatment, 22% of the 21 870 deaths, 27% of the 14 310 cardiovascular deaths and 39% of the 22 224 MACE could have been avoided if every patient who did not use an indicated medication for their laboratory-confirmed CKD was treated with guideline-directed pharmacological therapy for CKD. CONCLUSIONS: While we noted underdiagnosis and undertreatment of CKD in this large contemporary population, we also identified a substantial realisable potential to improve CKD outcomes and reduce its burden by treating patients early with guideline-directed pharmacological therapy.


Subject(s)
Hydroxymethylglutaryl-CoA Reductase Inhibitors , Renal Insufficiency, Chronic , Sodium-Glucose Transporter 2 Inhibitors , Humans , Angiotensin-Converting Enzyme Inhibitors/therapeutic use , Cohort Studies , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Sodium-Glucose Transporter 2 Inhibitors/therapeutic use , Renal Insufficiency, Chronic/therapy
2.
Am J Case Rep ; 25: e943858, 2024 Apr 15.
Article in English | MEDLINE | ID: mdl-38620025

ABSTRACT

BACKGROUND Close observation, statins, fibrate treatment, and lifestyle changes can safely manage asymptomatic individuals with severe hypertriglyceridemia (HTG) and minimal risk of symptom development. However, the risk of medication-induced liver injury in patients taking statin-fibrate makes management more challenging, and may require hospital admission and close monitoring with follow-up. CASE REPORT We present a rare case of a 43-year-old man with asymptomatic severe HTG exceeding 11.370 mg/dL with mixed hyperlipidemia, managed initially with high-intensity statins and fibrate. However, due to the concurrent use of statin and fibrates, the patient subsequently developed an acute liver injury. Hence, the oral medications had to be stopped, and the patient was admitted to the hospital for an insulin drip. Even during the hospital course, the patient's triglyceride (TG) levels showed resistance to the recommended dose of insulin and he required a higher insulin dose. He was discharged on fenofibrate and subcutaneous insulin to keep the TG level under 500. Fibrate was stopped, and high-intensity statin was used as primary prevention with lifestyle modifications. CONCLUSIONS This instance highlights the necessity of increased cognizance and cooperative endeavors in handling severe asymptomatic HTG. Our results highlight the significance of further research into the management of severe asymptomatic HTG in cases of injury to the liver. This work adds essential knowledge to the ongoing discussion about managing a rare case complicated by acute liver injury.


Subject(s)
Fenofibrate , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Hyperlipidemias , Hypertriglyceridemia , Insulins , Male , Humans , Adult , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Hypertriglyceridemia/drug therapy , Hypertriglyceridemia/complications , Hyperlipidemias/complications , Fenofibrate/therapeutic use , Insulins/therapeutic use
3.
BMJ Open ; 14(4): e078692, 2024 Apr 17.
Article in English | MEDLINE | ID: mdl-38631840

ABSTRACT

INTRODUCTION: This study aims to reduce potentially inappropriate prescribing (PIP) of statins and foster healthy lifestyle promotion in cardiovascular disease (CVD) primary prevention in low-risk patients. To this end, we will compare the effectiveness and feasibility of several de-implementation strategies developed following the structured design process of the Behaviour Change Wheel targeting key determinants of the clinical decision-making process in CVD prevention. METHODS AND ANALYSIS: A cluster randomised implementation trial, with an additional control group, will be launched, involving family physicians (FPs) from 13 Integrated Healthcare Organisations (IHOs) of Osakidetza-Basque Health Service with non-zero incidence rates of PIP of statins in 2021. All FPs will be exposed to a non-reflective decision assistance strategy based on reminders and decision support tools. Additionally, FPs from two of the IHOs will be randomly assigned to one of two increasingly intensive de-implementation strategies: adding a decision information strategy based on knowledge dissemination and a reflective decision structure strategy through audit/feedback. The target population comprises women aged 45-74 years and men aged 40-74 years with moderately elevated cholesterol levels but no diagnosed CVD and low cardiovascular risk (REGICOR<7.5%), who attend at least one appointment with any of the participating FPs (May 2022-May 2023), and will be followed until May 2024. We use the Reach, Effectiveness, Adoption, Implementation and Maintenance (RE-AIM) framework to evaluate outcomes. The main outcome will be the change in the incidence rate of PIP of statins and healthy lifestyle counselling in the study population 12 and 24 months after FPs' exposure to the strategies. Moreover, FPs' perception of their feasibility and acceptability, and patient experience regarding the quality of care received will be evaluated. ETHICS AND DISSEMINATION: The study was approved by the Basque Country Clinical Research Ethics Committee and was registered in ClinicalTrials.gov (NCT04022850). Results will be disseminated in scientific peer-reviewed journals. TRIAL REGISTRATION NUMBER: NCT04022850.


Subject(s)
Cardiovascular Diseases , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Male , Humans , Female , Delivery of Health Care , Clinical Decision-Making , Primary Prevention/methods , Randomized Controlled Trials as Topic , Clinical Trials, Phase II as Topic
4.
BMC Prim Care ; 25(1): 116, 2024 Apr 17.
Article in English | MEDLINE | ID: mdl-38632550

ABSTRACT

BACKGROUND: People living with HIV (PLWH) may be at heightened risk for cardiovascular disease (CVD). Statin use and lifestyle changes reduce the risk of CVD but remain under-prescribed among PLWH. The objective of this study was to characterize knowledge of CVD and statin use, current usage, barriers to taking statins, and information desired by PLWH to improve statin uptake among PLWH in Los Angeles, CA. METHODS: Between April 2019 and April 2020, we conducted four focus group discussions (n = 37) with patients across three public community health clinics that serve PLWH in Los Angeles County, California. All clinics participated in a larger study to improve statin prescribing for PLWH. We asked about knowledge of statins, willingness to take a statin, possible barriers to statin usage, preferred information sources for health information, and desired information about statins. We utilized standard qualitative content analysis methods to identify themes. RESULTS: We found a range in the awareness of statins, with some participants reporting never having heard of statins while others had a history of statin use. There were concerns about the potential long-term effect of statin use, but participants expressed willingness to use CVD medications generally and statins specifically, especially if recommended by their healthcare provider. Participants also expressed interest in potential alternatives to statin usage such as exercising regularly and nutritious eating. CONCLUSIONS: More interventions are needed to increase statin use among PLWH to improve CVD outcomes, which also has implications for HIV progression. Clinics should aim to increase patient and provider knowledge about CVD risk and statin use for PLWH and provide shared decision-making tools that are easy to use and culturally appropriate.


Subject(s)
Cardiovascular Diseases , HIV Infections , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Humans , United States , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Los Angeles
5.
Front Immunol ; 15: 1339338, 2024.
Article in English | MEDLINE | ID: mdl-38655259

ABSTRACT

Antiretroviral therapies (ART) have reduced human immunodeficiency virus (HIV) infection-associated morbidity and mortality improving the life of people with HIV (PWH). However, ART lead to residual HIV production, which in conjunction with microbial translocation and immune dysfunction contributes to chronic inflammation and immune activation. PWH on ART remain at an increased risk for cardiovascular diseases (CVDs) including myocardial infarction and stroke; which in part is explained by chronic inflammation and immune activation. Lifestyle factors and certain ART are associated with dyslipidemia characterized by an increase of low-density lipoprotein (LDL), which further contributes in the increased risk for CVDs. Lipid-lowering agents like statins are emerging as immune modulators in decreasing inflammation in a variety of conditions including HIV. The international randomized clinical trial REPRIEVE has shed light on the reduction of CVDs with statin therapy among PWH. Such reports indicate a more than expected benefit of statins beyond their lipid-lowering effects. Bempedoic acid, a first-in-class non-statin LDL-lowering drug with immune modulatory effects, may further aid PWH in combination with statins. Herein, we critically reviewed studies aimed at lipid-lowering and immune-modulating roles of statins that may benefit aging PWH.


Subject(s)
HIV Infections , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Humans , HIV Infections/drug therapy , HIV Infections/immunology , HIV Infections/complications , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Hypolipidemic Agents/therapeutic use , Dyslipidemias/drug therapy , Dyslipidemias/immunology , Cardiovascular Diseases/etiology , Anti-HIV Agents/therapeutic use , Anti-HIV Agents/adverse effects
6.
Ann Intern Med ; 177(4): JC39, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38560908

ABSTRACT

SOURCE CITATION: Ray KK, Nicholls SJ, Li N, et al; CLEAR OUTCOMES Committees and Investigators. Efficacy and safety of bempedoic acid among patients with and without diabetes: prespecified analysis of the CLEAR Outcomes randomised trial. Lancet Diabetes Endocrinol. 2024;12:19-28. 38061370.


Subject(s)
Diabetes Mellitus , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Adult , Humans , Diabetes Mellitus/drug therapy , Dicarboxylic Acids/adverse effects , Fatty Acids/adverse effects , Hydroxymethylglutaryl-CoA Reductase Inhibitors/adverse effects
8.
Eur Rev Med Pharmacol Sci ; 28(7): 2860-2877, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38639527

ABSTRACT

Heart failure (HF) is a condition with growing morbidity and mortality. Dyslipidemia in HF is not concentrated around hypercholesterolemia as in coronary artery disease. As a corollary, the robust benefits seen with statins across the spectrum of CAD have not been replicated in HF. Multiple potential pleiotropic effects of statins include anti-inflammatory, antioxidant, endothelial stabilization, antiapoptotic, anti-thrombotic, and modulation of the autonomic system apart from lipid lowering. These benevolent actions need to be counterbalanced with the potential derangement of ubiquinone, selenoprotein and endotoxin pathways. While small randomized and non-randomized studies demonstrated a multitude of benefits in clinical and surrogate endpoints, two large RCTs failed to demonstrate unequivocal benefits. However, multiple large meta-analyses do demonstrate definite improvement in clinical endpoints including death and heart failure hospitalization. The clinical likelihood of benefit was higher in younger patients with less advanced HF and use of lipophilic statins.


Subject(s)
Coronary Artery Disease , Dyslipidemias , Heart Failure , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Humans , Dyslipidemias/drug therapy , Heart Failure/drug therapy , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Hydroxymethylglutaryl-CoA Reductase Inhibitors/pharmacology , Randomized Controlled Trials as Topic , Meta-Analysis as Topic
9.
Biochem Biophys Res Commun ; 710: 149841, 2024 May 28.
Article in English | MEDLINE | ID: mdl-38588613

ABSTRACT

Prostate cancer is the most prevalent malignancy in men. While diagnostic and therapeutic interventions have substantially improved in recent years, disease relapse, treatment resistance, and metastasis remain significant contributors to prostate cancer-related mortality. Therefore, novel therapeutic approaches are needed. Statins are inhibitors of the 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR), the rate-limiting enzyme of the mevalonate pathway which plays an essential role in cholesterol homeostasis. Numerous preclinical studies have provided evidence for the pleiotropic antitumor effects of statins. However, results from clinical studies remain controversial and have shown substantial benefits to even no effects on human malignancies including prostate cancer. Potential statin resistance mechanisms of tumor cells may account for such discrepancies. In our study, we treated human prostate cancer cell lines (PC3, C4-2B, DU-145, LNCaP) with simvastatin, atorvastatin, and rosuvastatin. PC3 cells demonstrated high statin sensitivity, resulting in a significant loss of vitality and clonogenic potential (up to - 70%; p < 0.001) along with an activation of caspases (up to 4-fold; p < 0.001). In contrast, C4-2B and DU-145 cells were statin-resistant. Statin treatment induced a restorative feedback in statin-resistant C4-2B and DU-145 cells through upregulation of the HMGCR gene and protein expression (up to 3-folds; p < 0.01) and its transcription factor sterol-regulatory element binding protein 2 (SREBP-2). This feedback was absent in PC3 cells. Blocking the feedback using HMGCR-specific small-interfering (si)RNA, the SREBP-2 activation inhibitor dipyridamole or the HMGCR degrader SR12813 abolished statin resistance in C4-2B and DU-145 and induced significant activation of caspases by statin treatment (up to 10-fold; p < 0.001). Consistently, long-term treatment with sublethal concentrations of simvastatin established a stable statin resistance of a PC3SIM subclone accompanied by a significant upregulation of both baseline as well as post-statin HMGCR protein (gene expression up to 70-fold; p < 0.001). Importantly, the statin-resistant phenotype of PC3SIM cells was reversible by HMGCR-specific siRNA and dipyridamole. Our investigations reveal a key role of a restorative feedback driven by the HMGCR/SREBP-2 axis in statin resistance mechanisms of prostate cancer cells.


Subject(s)
Acyl Coenzyme A , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Prostatic Neoplasms , Male , Humans , Hydroxymethylglutaryl-CoA Reductase Inhibitors/pharmacology , Hydroxymethylglutaryl CoA Reductases/genetics , Hydroxymethylglutaryl CoA Reductases/metabolism , Sterol Regulatory Element Binding Protein 1 , Simvastatin/pharmacology , Prostatic Neoplasms/drug therapy , Prostatic Neoplasms/genetics , Caspases , Dipyridamole
10.
G Ital Cardiol (Rome) ; 25(5): 318-326, 2024 May.
Article in Italian | MEDLINE | ID: mdl-38639122

ABSTRACT

Over the last decade, several innovative therapeutic options have been developed and marketed for the management of hypercholesterolemia. However, the impossibility of a contextual update of international guidelines and the limits imposed by national regulatory authorities do not allow the use of these treatments in many patients, in particular in those at higher cardiovascular risk. Real-world studies show that the use of lipid-lowering therapies is inadequate even among patients at higher cardiovascular risk, with only 20% achieving recommended low-density lipoprotein cholesterol (LDL-C) levels and the use of combination therapies implemented in only 24% of patients. This review aims to highlight the benefits of an approach based on combination therapy and to propose a therapeutic algorithm that includes oral combination therapy, where necessary also in triple association (statin, ezetimibe and bempedoic acid), as an initial approach based on the most favorable cost-effectiveness ratio for patients at higher cardiovascular risk and the use of injectable anti-proprotein convertase subtilisin/kexin 9 therapies if the recommended LDL-C goal is not achieved.


Subject(s)
Anticholesteremic Agents , Cardiovascular Diseases , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Hypercholesterolemia , Humans , Cholesterol, LDL , Cardiovascular Diseases/prevention & control , Cardiovascular Diseases/chemically induced , Risk Factors , Hypercholesterolemia/complications , Hypercholesterolemia/drug therapy , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Ezetimibe/therapeutic use , Proprotein Convertase 9 , Heart Disease Risk Factors , Anticholesteremic Agents/therapeutic use
12.
Sci Rep ; 14(1): 7805, 2024 04 02.
Article in English | MEDLINE | ID: mdl-38565856

ABSTRACT

Given the pleiotropic effects of statins beyond their lipid-lowering effects, there have been attempts to evaluate the role of statin therapy in IPF, but they have shown inconclusive results. Data from the National Health Insurance Service (NHIS) database of South Korea were used to investigate the effects of statin therapy on IPF. The IPF cohort consisted of a total of 10,568 patients who were newly diagnosed with IPF between 2010 and 2017. These patients were then matched in a 1:3 ratio to 31,704 subjects from a control cohort without IPF, with matching based on age and sex. A case-control study was performed to evaluate the association between statin use and the risk for IPF, and the multivariable analysis revealed that statin use was associated with a lower risk for IPF (adjusted OR 0.847, 95% CI 0.800-0.898). Using the IPF cohort, we also evaluated whether statin use at the time of diagnosis was associated with future clinical outcomes. The statin use at the time of IPF diagnosis was associated with improved overall survival (adjusted HR 0.779, 95% CI 0.709-0.856). Further prospective studies are needed to clarify the role of statin therapy in IPF.


Subject(s)
Hydroxymethylglutaryl-CoA Reductase Inhibitors , Idiopathic Pulmonary Fibrosis , Humans , Hydroxymethylglutaryl-CoA Reductase Inhibitors/adverse effects , Case-Control Studies , Idiopathic Pulmonary Fibrosis/drug therapy , Idiopathic Pulmonary Fibrosis/epidemiology , Republic of Korea/epidemiology
13.
Diabetes Metab Res Rev ; 40(4): e3793, 2024 May.
Article in English | MEDLINE | ID: mdl-38661109

ABSTRACT

AIMS: The aims of the present study were to assess the effects of lipid-lowering drugs [HMG-CoA reductase inhibitors, proprotein convertase subtilisin/kexin type 9 inhibitors, and Niemann-Pick C1-Like 1 (NPC1L1) inhibitors] on novel subtypes of adult-onset diabetes through a Mendelian randomisation study. MATERIALS AND METHODS: We first inferred causal associations between lipid-related traits [including high-density lipoprotein cholesterol, low-density lipoprotein cholesterol (LDL-C), triglycerides (TG), apolipoproteins A-I, and apolipoproteins B] and novel subtypes of adult-onset diabetes. The expression quantitative trait loci of drug target genes for three classes of lipid-lowering drugs, as well as genetic variants within or nearby drug target genes associated with LDL-C, were then utilised as proxies for the exposure of lipid-lowering drugs. Mendelian randomisation analysis was performed using summary data from genome-wide association studies of LDL-C, severe autoimmune diabetes, severe insulin-deficient diabetes (SIDD), severe insulin-resistant diabetes (SIRD), mild obesity-related diabetes (MOD), and mild age-related diabetes. RESULTS: There was an association between HMGCR-mediated LDL-C and the risk of SIRD [odds ratio (OR) = 0.305, 95% confidence interval (CI) = 0.129-0.723; p = 0.007], and there was an association of PCSK9-mediated LDL-C with the risk of SIDD (OR = 0.253, 95% CI = 0.120-0.532; p < 0.001) and MOD (OR = 0.345, 95% CI = 0.171-0.696; p = 0.003). Moreover, NPC1L1-mediated LDL-C (OR = 0.109, 95% CI = 0.019-0.613; p = 0.012) and the increased expression of NPC1L1 gene in blood (OR = 0.727, 95% CI = 0.541-0.977; p = 0.034) both showed a significant association with SIRD. These results were further confirmed by sensitivity analyses. CONCLUSIONS: In summary, the different lipid-lowering medications have a specific effect on the increased risk of different novel subtypes of adult-onset diabetes.


Subject(s)
Genome-Wide Association Study , Hypolipidemic Agents , Mendelian Randomization Analysis , Proprotein Convertase 9 , Humans , Adult , Hypolipidemic Agents/therapeutic use , Diabetes Mellitus, Type 2/drug therapy , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Membrane Transport Proteins/genetics , Age of Onset , Prognosis , PCSK9 Inhibitors , Male , Quantitative Trait Loci , Diabetes Mellitus, Type 1/drug therapy , Diabetes Mellitus, Type 1/genetics , Female , Biomarkers/analysis , Polymorphism, Single Nucleotide
14.
Nutrients ; 16(7)2024 Mar 27.
Article in English | MEDLINE | ID: mdl-38612996

ABSTRACT

Managing atherosclerotic cardiovascular disease (ASCVD) often involves a combination of lifestyle modifications and medications aiming to decrease the risk of cardiovascular outcomes, such as myocardial infarction and stroke. The aim of this article is to discuss possible omega-3 (n-3) fatty acid-statin interactions in the prevention and treatment of ASCVD and to provide evidence to consider for clinical practice, highlighting novel insights in this field. Statins and n-3 fatty acids (eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)) are commonly used to control cardiovascular risk factors in order to treat ASCVD. Statins are an important lipid-lowering therapy, primarily targeting low-density lipoprotein cholesterol (LDL-C) levels, while n-3 fatty acids address triglyceride (TG) concentrations. Both statins and n-3 fatty acids have pleiotropic actions which overlap, including improving endothelial function, modulation of inflammation, and stabilizing atherosclerotic plaques. Thus, both statins and n-3 fatty acids potentially mitigate the residual cardiovascular risk that remains beyond lipid lowering, such as persistent inflammation. EPA and DHA are both substrates for the synthesis of so-called specialized pro-resolving mediators (SPMs), a relatively recently recognized feature of their ability to combat inflammation. Interestingly, statins seem to have the ability to promote the production of some SPMs, suggesting a largely unrecognized interaction between statins and n-3 fatty acids with relevance to the control of inflammation. Although n-3 fatty acids are the major substrates for the production of SPMs, these signaling molecules may have additional therapeutic benefits beyond those provided by the precursor n-3 fatty acids themselves. In this article, we discuss the accumulating evidence that supports SPMs as a novel therapeutic tool and the possible statin-n-3 fatty acid interactions relevant to the prevention and treatment of ASCVD.


Subject(s)
Atherosclerosis , Cardiovascular Diseases , Fatty Acids, Omega-3 , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Humans , Fatty Acids, Omega-3/pharmacology , Fatty Acids, Omega-3/therapeutic use , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Cardiovascular Diseases/drug therapy , Cardiovascular Diseases/prevention & control , Atherosclerosis/drug therapy , Atherosclerosis/prevention & control , Docosahexaenoic Acids/therapeutic use , Eicosapentaenoic Acid/pharmacology , Eicosapentaenoic Acid/therapeutic use , Fatty Acids , Inflammation
15.
J Exp Clin Cancer Res ; 43(1): 114, 2024 Apr 16.
Article in English | MEDLINE | ID: mdl-38627815

ABSTRACT

BACKGROUND: The efficacy of anti-PD-1 therapy is primarily hindered by the limited T-cell immune response rate and immune evasion capacity of tumor cells. Autophagy-related protein 7 (ATG7) plays an important role in autophagy and it has been linked to cancer. However, the role of ATG7 in the effect of immune checkpoint blockade (ICB) treatment on high microsatellite instability (MSI-H)/mismatch repair deficiency (dMMR) CRC is still poorly understood. METHODS: In this study, patients from the cancer genome altas (TCGA) COAD/READ cohorts were used to investigate the biological mechanism driving ATG7 development. Several assays were conducted including the colony formation, cell viability, qRT-PCR, western blot, immunofluorescence, flow cytometry, ELISA, immunohistochemistry staining and in vivo tumorigenicity tests. RESULTS: We found that ATG7 plays a crucial role in MSI-H CRC. Its knockdown decreased tumor growth and caused an infiltration of CD8+ T effector cells in vivo. ATG7 inhibition restored surface major histocompatibility complex I (MHC-I) levels, causing improved antigen presentation and anti-tumor T cell response by activating reactive oxygen species (ROS)/NF-κB pathway. Meanwhile, ATG7 inhibition also suppressed cholesterol accumulation and augmentation of anti-tumor immune responses. Combining ATG7 inhibition and statins improved the therapeutic benefit of anti-PD-1 in MSI-H CRC. Importantly, CRC patients with high expression of both ATG7 and recombinant 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGCR) experienced worse prognosis compared to those with low ATG7 and HMGCR expression. CONCLUSIONS: Inhibition of ATG7 leads to upregulation of MHC-I expression, augments immune response and suppresses cholesterol accumulation. These findings demonstrate that ATG7 inhibition has therapeutic potential and application of statins can increase the sensitivity to immune checkpoint inhibitors.


Subject(s)
Brain Neoplasms , Colorectal Neoplasms , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Neoplastic Syndromes, Hereditary , Humans , Autophagy-Related Protein 7/genetics , Cholesterol , Colorectal Neoplasms/drug therapy , Colorectal Neoplasms/genetics , Colorectal Neoplasms/pathology , DNA Mismatch Repair , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Immune Checkpoint Inhibitors/pharmacology , Immunity , Microsatellite Instability
16.
Indian Heart J ; 76 Suppl 1: S108-S112, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38599725

ABSTRACT

Familial hypercholesterolemia is a common genetic disorder of autosomal inheritance associated with elevated LDL-cholesterol. It is estimated to affect 1:250 individuals in general population roughly estimated to be 5 million in India. The prevalence of FH is higher in young CAD patients (<55 years in men; <60 years in women). FH is underdiagnosed and undertreated. Screening during childhood and Cascade screening of family members of known FH patients is of utmost importance in order to prevent the burden of CAD. Early identification of FH patients and early initiation of the lifelong lipid lowering therapy is the most effective strategy for managing FH. FH management includes pharmaceutical agents (statins and non statin drugs) and lifestyle modification. Inspite of maximum dose of statin with or without Ezetimibe, if target levels of LDL-C are not achieved, Bempedoic acid, proprotein convertase subtilisin/kexin type 9 (PCSK9) Inhibitors/Inclisiran can be added.


Subject(s)
Anticholesteremic Agents , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Hyperlipoproteinemia Type II , Male , Humans , Female , Proprotein Convertase 9/therapeutic use , Anticholesteremic Agents/therapeutic use , Cholesterol, LDL , Hyperlipoproteinemia Type II/diagnosis , Hyperlipoproteinemia Type II/epidemiology , Hyperlipoproteinemia Type II/genetics , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use
17.
Indian Heart J ; 76 Suppl 1: S33-S37, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38599727

ABSTRACT

Blood cholesterol has firmly been established as a crucial risk factor for the development of atherosclerotic cardiovascular disease (ASCVD) by elegant epidemiological studies. Naturally, means to reduce blood cholesterol level took the centerstage of research in this field. After initial lukewarm results with nicotinic acid, fibrates and some other agents, statins emerged as the most effective class of medicine to reduce blood cholesterol; in particular, the most atherogenic low density lipoprotein cholesterol (LDL-C). Also, they are very safe and well tolerated. As ASCVD comes in various stages, statins have also been tried in different settings, e.g., primary prevention, secondary prevention, as part of coronary intervention strategy, familial hypercholesterolemia, etc. Almost in all clinical scenarios, statins proved themselves to impart clinical benefit. Though side effects of statins are outweighed by their benefits, nonetheless clinicians should detect the side effects early to avoid major problems.


Subject(s)
Anticholesteremic Agents , Atherosclerosis , Cardiovascular Diseases , Dyslipidemias , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Hyperlipoproteinemia Type II , Humans , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Cholesterol, LDL , Dyslipidemias/drug therapy , Atherosclerosis/prevention & control , Cardiovascular Diseases/prevention & control , Cardiovascular Diseases/drug therapy , Anticholesteremic Agents/therapeutic use
18.
Front Endocrinol (Lausanne) ; 15: 1336357, 2024.
Article in English | MEDLINE | ID: mdl-38586464

ABSTRACT

Objectives: Chronic low-grade inflammation is widely recognized as a pathophysiological defect contributing to ß-cell failure in type 2 diabetes mellitus (T2DM). Statin therapy is known to ameliorate CD8+ T cell senescence, a mediator of chronic inflammation. However, the additional immunomodulatory roles of ezetimibe are not fully understood. Therefore, we investigated the effect of statin or statin/ezetimibe combination treatment on T cell senescence markers. Methods: In this two-group parallel and randomized controlled trial, we enrolled 149 patients with T2DM whose low-density lipoprotein cholesterol (LDL-C) was 100 mg/dL or higher. Patients were randomly assigned to either the rosuvastatin group (N=74) or the rosuvastatin/ezetimibe group (N=75). The immunophenotype of peripheral blood mononuclear cells and metabolic profiles were analyzed using samples from baseline and post-12 weeks of medication. Results: The fractions of CD8+CD57+ (senescent CD8+ T cells) and CD4+FoxP3+ (Treg) significantly decreased after intervention in the rosuvastatin/ezetimibe group (-4.5 ± 14.1% and -1.2 ± 2.3%, respectively), while these fractions showed minimal change in the rosuvastatin group (2.8 ± 9.4% and 1.4 ± 1.5%, respectively). The degree of LDL-C reduction was correlated with an improvement in HbA1c (R=0.193, p=0.021). Changes in the CD8+CD57+ fraction positively correlated with patient age (R=0.538, p=0.026). Notably, the fraction change in senescent CD8+ T cells showed no significant relationship with changes in either HbA1c (p=0.314) or LDL-C (p=0.592). Finally, the ratio of naïve to memory CD8+ T cells increased in the rosuvastatin/ezetimibe group (p=0.011), but not in the rosuvastatin group (p=0.339). Conclusions: We observed a reduction in senescent CD8+ T cells and an increase in the ratio of naive to memory CD8+ T cells with rosuvastatin/ezetimibe treatment. Our results demonstrate the immunomodulatory roles of ezetimibe in combination with statins, independent of improvements in lipid or HbA1c levels.


Subject(s)
Anticholesteremic Agents , Azetidines , Diabetes Mellitus, Type 2 , Hydroxymethylglutaryl-CoA Reductase Inhibitors , Hypercholesterolemia , Humans , Rosuvastatin Calcium/therapeutic use , Ezetimibe/therapeutic use , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Cholesterol, LDL , Anticholesteremic Agents/therapeutic use , Diabetes Mellitus, Type 2/drug therapy , Glycated Hemoglobin , Leukocytes, Mononuclear , Hypercholesterolemia/drug therapy , Azetidines/therapeutic use , Fluorobenzenes/therapeutic use , Pyrimidines , Sulfonamides/therapeutic use , Drug Therapy, Combination , Treatment Outcome , Inflammation/drug therapy , T-Lymphocytes
19.
Nat Commun ; 15(1): 2953, 2024 Apr 05.
Article in English | MEDLINE | ID: mdl-38580662

ABSTRACT

Heart failure with preserved ejection fraction (HFpEF) is associated with endothelial dysfunction. We have previously reported that statins prevent endothelial dysfunction through inhibition of microRNA-133a (miR-133a). This study is to investigate the effects and the underlying mechanisms of statins on HFpEF. Here, we show that statins upregulate the expression of a circular RNA (circRNA-RBCK1) which is co-transcripted with the ring-B-box-coiled-coil protein interacting with protein kinase C-1 (RBCK1) gene. Simultaneously, statins increase activator protein 2 alpha (AP-2α) transcriptional activity and the interaction between circRNA-RBCK1 and miR-133a. Furthermore, AP-2α directly interacts with RBCK1 gene promoter in endothelial cells. In vivo, lovastatin improves diastolic function in male mice under HFpEF, which is abolished by loss function of endothelial AP-2α or circRNA-RBCK1. This study suggests that statins upregulate the AP-2α/circRNA-RBCK1 signaling to suppress miR-133a in cardiac endothelial cells and prevent diastolic dysfunction in HFpEF.


Subject(s)
Heart Failure , Hydroxymethylglutaryl-CoA Reductase Inhibitors , MicroRNAs , Animals , Male , Mice , Endothelial Cells/metabolism , Heart Failure/drug therapy , Heart Failure/genetics , Heart Failure/metabolism , Hydroxymethylglutaryl-CoA Reductase Inhibitors/pharmacology , MicroRNAs/metabolism , RNA, Circular/genetics , Stroke Volume/physiology
20.
J Nepal Health Res Counc ; 21(4): 564-572, 2024 Mar 31.
Article in English | MEDLINE | ID: mdl-38616584

ABSTRACT

BACKGROUND: and objective: Lipid-lowering is an important intervention to reduce cardiovascular morbidity and mortality in the secondary prevention of STEMI. There is no study to analyze the use of statin and LDL-C treatment target attainment among STEMI patients in Nepal. This study aims to assess the use of statin and LDL-C treatment target attainment among STEMI patients. METHODS: It was a prospective observational single-center study conducted at the Shahid Gangalal National Heart Centre, Kathmandu, Nepal outpatient department. An outpatient department-based survey was conducted among STEMI patients who have lipid profile levels at the time of admission for STEMI and after 4-13 weeks of the index event. Lipid profile levels, diagnosis, and risk factors were collected during the outpatient follow-up. RESULTS: Our study included 280 post-STEMI patients; the mean age was 57.5±11.7 years with the majority being male. The mean duration of follow-up was 6.7 ± 0.1 weeks. Rosuvastatin was the preferred statin with 82.1%. The most common dose of statin used was Rosuvastatin 20mg (70%), followed by Atorvastatin 40mg (12.5%). LDL-C levels of <1.4mmol/l were achieved in 44.6% of cases and LDL levels of <1.8mmol/l in 71.8% of cases. In 36.8% of the study population, there was a greater than 50% decline in LDL-C levels. Diabetic patients (55.1% and 83.1%) only have the significant achievement of LDL goal of both <1.4mmol/l and <1.8mmol/l respectively, when compared to those without diabetes (44.9% and 16.9%). CONCLUSIONS: Most of the post-STEMI patients were treated with high doses of statins and achieved the target LDL-C levels.


Subject(s)
Hydroxymethylglutaryl-CoA Reductase Inhibitors , ST Elevation Myocardial Infarction , Humans , Male , Middle Aged , Aged , Female , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Rosuvastatin Calcium , Cholesterol, LDL , Nepal/epidemiology , Outpatients
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