The Impact of GLP-1 Receptor Agonists on Patients with Diabetes on Insulin Therapy

Objective: The clinical benefit of adding a glucagon-like peptide-1 receptor agonist (GLP-1RA) to basal-bolus or very high dose insulin regimens is unclear. This study investigated the impact of adding a GLP-1RA to a spectrum of insulin regimens (basal, basal-bolus, and U-500) to determine the impact on hemoglobin A1c (HbA1c), weight loss, and total daily insulin dose (TDD) over the course of 12 months.Methods: A retrospective chart review was conducted on 113 participants with type 2 diabetes mellitus using insulin therapy. Each participant's HbA1c, body weight, and TDD were recorded prior to initiation of GLP-1RA therapy and at the 3, 6, and 12-month time points while on combination therapy.Results: Across all participants, the HbA1c values decreased significantly from a baseline of 8.9 (74 mmol/mol) ± 0.14% to 8.2 (66 mmol/mol) ± 0.14% (P<.01) in the first 3 months, 8.0 (64 mmol/mol) ± 0.12% (P<.01) at 6 months, to 8.3 (67 mmol/mol) ± 0.14% (P<.01) at 12 months. There was no significant decrease in weight or TDD with the addition of a GLP-1RA overall or in different insulin groups. However, there was a clinically significant decrease in weight over the study duration.Conclusion: The results of this study suggest that adding a GLP-1RA to various insulin regimens may help to achieve glycemic goals while avoiding the less desirable side effects of weight gain and increasing insulin regimens. However, the expected weight loss and decrease in TDD may not be as sizable in the clinical setting.Abbreviations: DCOE = Diabetes Center of Excellence; DM = diabetes mellitus; GLP-1RA = glucagon-like peptide-1 receptor agonist; HbA1c = hemoglobin A1c; RCT = randomized controlled trial; TDD = total daily dose     

GLP-1及其受体激动剂Exendin-4临床适应症的扩展

GLP-1及其受体激动剂Exendin-4是治疗糖尿病的一种理想药物,是近年来新的研究热点之一。近年发现,该类药物可从多个生理角度发挥功能,揭示其临床适应症可能有进一步的扩展空间。对GLP-1及Exendin-4的各种已知和潜在的临床适应症进行了概述,这些适应症除了各型糖尿病外,还包括肥胖症、神经系统和心脏的疾病以及其他各种潜在适应症。     

2型糖尿病患者早期使用胰高血糖素样受体激动剂

糖尿病目前已成为继心血管疾病和肿瘤之后的第三位主要非传染性疾病,其中90%为2型糖尿病患者。胰高血糖素样肽-1类似物(GLP-I类似物)作为一种新型的降糖药物,具有降低体重、降低收缩压、改善胰岛细胞功能,已成为2型糖尿病治疗的新热点。艾塞那肽和利拉鲁肽作为肠促胰素激素,与人体内天然GLP-1保持了高度同源性(97%)。近几年来受到人们广泛关注。本综述针对2型糖尿病患者早期使用胰岛素样受体激动剂艾塞那肽和利拉鲁肽的安全性和有效性进行评估。     

SGLT-2 Inhibitor Therapy Added to GLP-1 Agonist Therapy in the Management of T2DM

Objective: To assess the real-world efficacy and safety of canagliflozin therapy added to type 2 diabetes mellitus (T2DM) patients who have received a minimum 1 year of glucagon-like peptide-1 (GLP-1) agonist therapy.Methods: This pre-post observational study assessed the efficacy and safety of canagliflozin in a group of T2DM patients from a community endocrinology practice who received GLP-1 agonist therapy for a minimum of 12 months. The primary study outcome was change in mean glycated hemoglobin (HbA1c) level from baseline. Secondary endpoints included changes in average weight, and comparison of the percentage of patients obtaining an HbA1c <7%.Results: A total of 75 patients met all the study criteria. Baseline patient characteristics were as follows: average age, 58 ± 9 years; mean duration of T2DM, 14 ± 6 years; 56% male; 92% Caucasian; baseline body mass index (BMI), 39.4 ± 9.4 kg/m²; and mean baseline HbA1c, 7.94 ± 0.69%. HbA1c and weight were significantly reduced by 0.39% and 4.6 kg, respectively. Adverse effects were reported by 13 (17.3%) patients, including 4 (5.3%) who discontinued canagliflozin because of adverse reactions.Conclusion: Canagliflozin was generally well tolerated and significantly further reduced mean HbA1c levels and body weight in patients with T2DM when added to GLP-1 regimen.Abbreviations:BP = blood pressureBUN = blood urea nitrogenCANTATA = Canagliflozin Treatment and Trial AnalysisDBP = diastolic blood pressureDKA = diabetic ketoacidosisDPP-4 = dipeptidyl peptidase-4EMR = electronic medical recordFDA = Food and Drug AdministrationGFR = glomerular filtration rateGLP-1 = glucagon-like peptide-1HbA1c = glycated hemoglobinHDL-C = high-density lipoprotein cholesterolLDL-C = low-density lipoprotein cholesterolSCr = serum creatinineSGLT-2 = sodium glucose cotransporter 2T2DM = type 2 diabetes mellitusTZD = thiazolidinedioneUTI = urinary tract infection     

GLP-1 受体激动剂联合门冬胰岛素30 对2 型糖尿病患者控糖效果及体重的影响

目的:探讨胰高血糖素样肽-1(GLP-1)受体激动剂联合门冬胰岛素30对2型糖尿病患者控糖效果及体重的影响。方法:选取116例2型糖尿病患者为研究对象,随机数字表法分成研究组(A组,n=58)和对照组(B组,n=58)两组。B组予以门冬胰岛素30治疗方案,A组则采用门冬胰岛素30联合利拉鲁肽治疗方案,均持续治疗24周后观察疗效。比对两组患者治疗前后控糖指标、脂质生化指标及体重指数(BMI)等变化情况,记录其甲级血糖控制率、血糖总控制率及低血糖发生率差异。结果:1治疗6个月后,两组患者除HDL-C水平较治疗前对比无统计学意义(P0.05)外,FBG、2 h PG、Hb A1c等控糖指标,TG、TC、LDL-C等脂质生化指标及BMI水平均较治疗前显著降低,其中A组降幅大于B组,差异具有统计学意义(P0.05);2A组甲级控制率及血糖总控制率分别为70.7%和100.0%,均显著高于B组的37.9%和93.1%(P0.05);3两组患者治疗期间均无严重不良反应及严重低血糖事件发生,其中A组轻微低血糖发生率为6.9%(4/58),显著低于B组的24.1%(14/58),差异具有统计学意义(P0.05)。结论:将门冬胰岛素30联合GLP-1受体激动剂方案应用于2型糖尿病患者的临床治疗中,疗效确切,血糖控制效果良好,能有效改善其血脂水平、抑制体重发展,于患者预后提升有利。     

Improved Glycaemia Correlates with Liver Fat Reduction in Obese,Type 2 Diabetes,Patients Given Glucagon-Like Peptide-1 (GLP-1) Receptor Agonists

Glucagon-like peptide-1 receptor agonists (GLP-1 RA) are effective for obese patients with type 2 diabetes mellitus (T2DM) because they concomitantly target obesity and dysglycaemia. Considering the high prevalence of non-alcoholic fatty liver disease (NAFLD) in patients with T2DM, we determined the impact of 6 months’ GLP-1 RA therapy on intrahepatic lipid (IHL) in obese, T2DM patients with hepatic steatosis, and evaluated the inter-relationship between changes in IHL with those in glycosylated haemoglobin (HbA₁c), body weight, and volume of abdominal visceral and subcutaneous adipose tissue (VAT and SAT). We prospectively studied 25 (12 male) patients, age 50±10 years, BMI 38.4±5.6 kg/m² (mean ± SD) with baseline IHL of 28.2% (16.5 to 43.1%) and HbA₁c of 9.6% (7.9 to 10.7%) (median and interquartile range). Patients treated with metformin and sulphonylureas/DPP-IV inhibitors were given 6 months GLP-1 RA (exenatide, n = 19; liraglutide, n = 6). IHL was quantified by liver proton magnetic resonance spectroscopy (¹H MRS) and VAT and SAT by whole body magnetic resonance imaging (MRI). Treatment was associated with mean weight loss of 5.0 kg (95% CI 3.5,6.5 kg), mean HbA_1c reduction of 1·6% (17 mmol/mol) (0·8,2·4%) and a 42% relative reduction in IHL (−59.3, −16.5%). The relative reduction in IHL correlated with that in HbA₁c (ρ = 0.49; p = 0.01) but was not significantly correlated with that in total body weight, VAT or SAT. The greatest IHL reduction occurred in individuals with highest pre-treatment levels. Mechanistic studies are needed to determine potential direct effects of GLP-1 RA on human liver lipid metabolism.     

2型糖尿病合并高血压患者个性化延续护理研究

为探讨个性化延续护理对2型糖尿病合并高血压患者生活质量及服药依从性影响,本研究选取2015年6月至2017年1月在哈励逊国际和平医院治疗的150例2型糖尿病合并高血压患者,随机分组,对照组患者应用常规护理,试验组患者给予个性化延续护理,观察比较两组患者血糖、血压、焦虑自评量表(self-rating anxiety scale, SAS)、抑郁自评量表(self-rating depression scale, SDS)、自尊量表(self-esteem scale,SES)、依从性差异。结果显示,12个月后试验组患者空腹血糖(7.59±1.26) mmol/L,糖化血红蛋白(glycated hemoglobin, HbAIC)(5.62±1.28)%较对照组明显下降(p<0.05);12个月后试验组患者收缩压(116.08±9.41) mmHg、舒张压(90.35±6.92) mmHg明显低于对照组(p<0.05);试验组患者SAS (35.13±4.27)分、SDS (31.42±2.09)分、SES (25.01±5.85)分同对照组比较明显改善(p<0.05);试验组患者依从性97.33%、不良生活习惯改善94.67%、健康知识掌握98.67%同对照组比较显著升高(p<0.05)。本研究结论初步表明针对2型糖尿病合并高血压患者应用个性化延续护理可改善患者血糖和血压水平,提高患者生活质量和治疗依从性,值得推广应用。     

Self-Care Associated with Home Exercises in Patients with Type 2 Diabetes Mellitus

The objective of this study was to verify self-care guidelines together with lower limb home exercises alter ankle and foot plantar pressure and alignment in patient with Type 2 Diabetes Mellitus (DM) measuring health and sociodemographic factors. The health factors analyzed were sensitivity and circulation aspects, risk rating, and neuropathy symptom score, ankle and foot alignment (photogrammetry), plantar pressures, and postural stability (baropodometry) before and after administering these guidelines and home exercises in 97 patients type 2 DM during 10 months. The self-care guidelines and exercises changed the forefoot alignment (Right Foot – Initial vs Final, p = 0.04; Left Foot, P<0.01), the center of the force displacement in the mediolateral (Right Foot - Initial versus Final, p = 0.02; Left Foot, P<0.01), and the anterior-posterior (Right foot - Initial versus Final, p = 0.01) direction, and body balance (Initial versus Final, p = 0.02). There was no change in the remaining assessed parameters. Self-care associated with the guidelines for home exercises for the lower limbs in patients with type 2 DM are effective in maintaining and improving the alignment of the feet, mediolateral stability and prevention of complications.

Trial Registration

The Brazilian Clinical Trials Registry RBR-8854CD     

Clinical Efficacy and Patient Satisfaction with U-500 Insulin Pump Therapy in Patients with Type 2 Diabetes

ObjectiveTo determine the safety and efficacy of U-500 regular insulin in pump therapy and to assess satisfaction with U-500 insulin pump therapy in patients with type 2 diabetes and severe insulin resistance.MethodsWe performed a retrospective review of medical records of 6 patients with type 2 diabetes and insulin resistance who had been using U-500 insulin pump therapy for at least 6 months. In addition, we conducted a telephone follow-up patient satisfaction survey.ResultsThe mean age of the patients was 57 ± 6 years. Of the 6 patients (3 men and 3 women), 4 were white, 1 was black, and 1 was Asian. The mean hemoglobin A1c value before continuous subcutaneous insulin infusion therapy with U-500 regular insulin was 9.1% ± 1.8%, and the mean U-100 insulin dose required was 391 ± 91 U/day. In comparison, the mean U-500 insulin dose required at 6 months was 59.2 ± 13.6 U/day, which is equivalent to 296 ± 68 U/day of U-100 insulin (P = 0.04), and the mean hemoglobin A1c value at 6 months after treatment with the insulin pump using U-500 regular insulin was 6.9% ± 0.9% (P = 0.03). In addition, our study patients lost a mean of 6.1 lb during the 6-month period, and no patient had clinically significant episodes of hypoglycemia. The majority of the patients reported a higher satisfaction with the U-500 insulin pump therapy in comparison with conventional insulin treatment.ConclusionU-500 insulin pump therapy is a novel alternative for patients with type 2 diabetes and severe insulin resistance who have not met glycemic control goals with use of standard intensive insulin regimens. (Endocr Pract. 2007;13:721-725)     

A Novel Peptide with Similar Pharmacology to Exenatide in Rodents as GLP-1 Receptor Agonist

The prevalence of type-2 diabetes is rapidly increasing. Currently, exenatide is the first medicine which mimics incretin. However, it requires subcutaneous injection twice a day, an inconvenient way for patients. In this study, we identified a novel peptide with similar pharmacology to exenatide in rodents as GLP-1 receptor agonist which consists of 17 amino acids (17P). It promotes Ins-1 cell proliferation and insulin secretion and lowers blood glucose of diabetic rats. 17P was synthetized by solid-phase peptide synthesis. Interactions between GLP-1 receptor and 17P were studied by Bio-layer interferometry. Ins-1 cell proliferation was studied by MTT assay. ELISA was used to study Ins-1 cell insulin secretion. In vivo tests were performed with male Wistar rats. We used high fat diet and STZ injection to induce a type-2 diabetic rats model. Then, those rats were randomized to different test groups, and administered exenatide, 17P and saline water injection, to evaluate different responses. Based on HPLC (high performance liquid chromatography) and MS (mass spectrometry), 17P synthesis was successful. Bio-layer interferometry data showed a close interaction between GLP-1 receptor and 17P. 17P treatment of Ins-1 cells for 24 h could promote cell proliferation and insulin secretion in a dose-dependent manner. Administration of 17P in HF-STZ male Wistar rats demonstrated that 17P could lower the level of blood glucose and stabilize the body weight of the diabetic rats. All 17P treatments were similar to treatment with exenatide. In vitro and in vivo studies demonstrated that 17P could relieve symptoms of type-2 diabetes. Therefore, 17P could be developed as a promising type-2 diabetes therapeutic drug.     

Genetic Variants Associated with Lipid Profiles in Chinese Patients with Type 2 Diabetes

Dyslipidemia is a strong risk factor for cardiovascular disease among patients with type 2 diabetes (T2D). The aim of this study was to identify lipid-related genetic variants in T2D patients of Han Chinese ancestry. Among 4,908 Chinese T2D patients who were not taking lipid-lowering medications, single nucleotide polymorphisms (SNPs) in seven genes previously found to be associated with lipid traits in genome-wide association studies conducted in populations of European ancestry (ABCA1, GCKR, BAZ1B, TOMM40, DOCK7, HNF1A, and HNF4A) were genotyped. After adjusting for multiple covariates, SNPs in ABCA1, GCKR, BAZ1B, TOMM40, and HNF1A were identified as significantly associated with triglyceride levels in T2D patients (P < 0.05). The associations between the SNPs in ABCA1 (rs3890182), GCKR (rs780094), and BAZ1B (rs2240466) remained significant even after correction for multiple testing (P = 8.85×10⁻³, 7.88×10⁻⁷, and 2.03×10⁻⁶, respectively). BAZ1B (rs2240466) also was associated with the total cholesterol level (P = 4.75×10⁻²). In addition, SNP rs157580 in TOMM40 was associated with the low-density lipoprotein cholesterol level (P = 6.94×10⁻³). Our findings confirm that lipid-related genetic loci are associated with lipid profiles in Chinese patients with type 2 diabetes.     

Clinical Outcomes Using Long-Term Combination Therapy with Insulin Glargine and Exenatide in Patients with Type 2 Diabetes Mellitus

ObjectiveTo examine the long-term effects of combination insulin glargine/exenatide treatment on glycemic control.MethodsWe conducted a 24-month retrospective US chart review of patients with inadequately controlled type 2 diabetes (T2DM) and hemoglobin A_1c (A1C) levels > 7.0% for whom glargine and exenatide were coprescribed in differing order (glargine added after exenatide [exenatide/glargine]; exenatide added after glargine [glargine/exenatide]). Treatment order groups were combined to form a pooled treatment group. Changes from baseline in A1C, patients with A1C ≤ 7.0%, body weight, glargine/exenatide daily dose, oral antidiabetic drug (OAD) use, and hypoglycemia were evaluated.ResultsTreatment groups were similar at baseline; however, patients in the glargine/exenatide group (n = 121) (vs exenatide/glargine group [n = 44]) had longer disease duration (11.8 vs 8.0 years) and took fewer OADs (1.7 vs 2.3). Overall, baseline A1C was 8.8 ± 1.3% and weight was 109.5 ± 25.3 kg. Significant A1C reductions emerged at month 6 and persisted throughout 24 months (vs baseline) in both treatment groups (pooled: –0.7 ± 1.6; P < .001), and 33.0% of patients achieved an A1C level ≤ 7.0%. After 24 months of exenatide/glargine, body weight remained unchanged (0.7 ± 8.3 kg; P = .640). With glargine/exenatide, body weight decreased (–2.5 ± 6.7 kg; P = .001). At month 24, daily glargine dose was 0.40 ± 0.23 units/kg for the exenatide/glargine group and 0.47 ± 0.30 units/kg for the glargine/exenatide group. Hypoglycemia frequency was similar in both treatment groups.ConclusionsRegardless of treatment order, long-term combined therapy with glargine and exenatide for up to 24 months in patients with inadequately controlled T2DM suggests reduction of A1C without significant weight gain or increased hypoglycemia risk. (Endocr Pract. 2012;18:17-25)     

Hba1C Control And Cost-Effectiveness in Patients With Type 2 Diabetes Mellitus Initiated On Canagliflozin or A Glucagon-Like Peptide 1 Receptor Agonist in A Real-World Setting

Objective: To compare glycated hemoglobin (HbA1c) control and medication costs between patients with type 2 diabetes mellitus (T2DM) treated with canagliflozin 300 mg (CANA) or a glucagon-like peptide 1 receptor agonist (GLP-1 RA) in a real-world setting.Methods: Adults with T2DM newly initiated on CANA or a GLP-1 RA (index date) were identified from IQVIA™ Real-World Data Electronic Medical Records U.S. database (March 29, 2012–April 30, 2016). Inverse probability of treatment weighting accounted for differences in baseline characteristics. HbA1c levels at 3-month intervals were compared using generalized estimating equations. Medication costs used wholesale acquisition costs.Results: For both cohorts (CANA: n = 11,435; GLP-1 RA: n = 11,582), HbA1c levels decreased at 3 months postindex and remained lower through 30 months. Absolute changes in mean HbA1c from index to 3 months postindex for CANA and GLP-1 RA were -1.16% and -1.21% (patients with baseline HbA1c ≥7% &lsqb;53 mmol/mol]); -1.54% and -1.51% (patients with baseline HbA1c ≥8% &lsqb;64 mmol/mol]); and -2.13% and -1.99% (patients with baseline HbA1c ≥9% &lsqb;75 mmol/mol]), respectively. Postindex, CANA patients with baseline HbA1c ≥7% had similar HbA1c levels at each interval versus GLP-1 RA patients, except 9 months (mean HbA1c, 7.75% &lsqb;61 mmol/mol] vs. 7.86% &lsqb;62 mmol/mol]; P = .0305). CANA patients with baseline HbA1c ≥8% and ≥9% had consistently lower HbA1c numerically versus GLP-1 RA patients and statistically lower HbA1c at 9 (baseline HbA1c ≥8% or ≥9%), 27, and 30 months (baseline HbA1c ≥9%). Continuous 12-month medication cost $3,326 less for CANA versus GLP-1 RA.Conclusion: This retrospective study demonstrated a similar evolution of HbA1c levels among CANA and GLP-1 RA patients in a real-world setting. Lower medication costs suggest CANA is economically dominant over GLP-1 RA (similar effectiveness, lower cost).Abbreviations:AHA = antihyperglycemic agentBMI = body mass indexCANA = canagliflozin 300 mgDCSI = diabetes complications severity indexeGFR = estimated glomerular filtration rateEMR = electronic medical recordGLP-1 RA = glucagon-like peptide 1 receptor agonistHbA1c = glycated hemoglobinICD-9-CM = International Classification of Diseases–Ninth Revision–Clinical ModificationICD-10-CM = International Classification of Diseases–Tenth Revision–Clinical ModificationIPTW = inverse probability of treatment weightingITT = intent-to-treatMPR = medication possession ratioPDC = proportion of days coveredPS = propensity scorePSM = propensity score matchingQuan-CCI = Quan-Charlson comorbidity indexSGLT2 = sodium-glucose cotransporter 2T2DM = type 2 diabetes mellitusWAC = wholesale acquisition cost     

Patient Factors Associated with Glucagonlike Peptide 1 Receptor Agonist use with and without Insulin

ObjectiveTo evaluate both the patient factors associated with the initiation of exenatide and the real-world treatment patterns of exenatide use with and without insulin.MethodsUsing retrospective electronic medical records from the General Electric Centricity database, we performed analyses of 2 cohorts to separately evaluate factors associated with initiation of exenatide among patients with type 2 diabetes mellitus and differences between those who initiated exenatide with and without concurrent insulin use. Cohort 1 was used to assess predictors of exenatide initiation and included adults with type 2 diabetes who were active in the database when exenatide became available (October 1, 2005). Cohort 2 was used to identify characteristics of patients who initiated exenatide with and without insulin.ResultsCohort 1 included 190444 adults, and cohort 2 included 9810 adults. In cohort 1, 7383 patients initiated exenatide therapy; factors associated with exenatide initiation were female sex, younger age, body weight of 102.3 kg or greater, body mass index of 35 kg/m² or greater, residence in the southern United States, a lower Charlson Comorbidity Index, previous or existing therapy with triple oral antidiabetic drugs, and insulin plus oral antidiabetic drugs. In cohort 2, 2470 exenatide-treated patients initiated exenatide with insulin (25%) (with or without oral antidiabetic drugs). They were more likely to weigh more than 113.6 kg, have a body mass index greater than 40 kg/m², have a Charlson Comorbidity Index of 2 or greater, and have a baseline hemoglobin A_1c level greater than 9%.ConclusionsExenatide concomitant with insulin use (with or without oral antidiabetic drugs) was common, and was more likely to be prescribed in patients with morbid obesity, comorbid conditions, and poor glycemic control. Randomized controlled trials are needed to confirm the safe and effective use of this combination. (Endocr Pract. 2011;17:707-716)     

Exenatide Therapy in Obese Patients With Type 2 Diabetes Mellitus Treated with Insulin

ObjectiveTo evaluate the effect of exenatide on clinical parameters in obese patients with type 2 diabetes mellitus whose hyperglycemia is not adequately controlled despite treatment with oral hypoglycemic agents and insulin.MethodsIn this retrospective analysis, clinical progress of 52 obese patients with type 2 diabetes treated with exenatide, 5 mcg twice daily, in an outpatient setting was reviewed. Treatment initiation was between September and December 2005. Mean follow-up period was 26 weeks. Thirty-eight patients took exenatide regularly (Group A); 14 patients discontinued exenatide because of insurance, personal, or economic reasons (Group B). Measurements at baseline and at follow-up included body weight; blood pressure; and levels of hemoglobin A_1c (HbA_1c), high-sensitivity C-reactive protein (CRP), and plasma lipids. Insulin dosage requirements were assessed.ResultsMean body weight (± standard error of the mean) decreased by 6.46 ± 0.8 kg (P < .001) in Group A and increased by 2.4 ± 0.6 kg in Group B (P < .001). In Group A, mean HbA_1c decreased by 0.6 ± 0.21% (P = .007), and the insulin dosage requirement decreased for rapid-acting and mixed insulins (P < .02). In Group A, means of the following parameters decreased: serum total cholesterol by 8.5 ± 3.3% (P = .03), triglycerides by 26 ± 7.6% (P = .01), systolic blood pressure by 9.2 ± 3.3 mm Hg (P = .02), and high-sensitivity CRP by 34 ± 14.3% (P = .05). These indices did not change in Group B.ConclusionExenatide effectively treats obese patients with type 2 diabetes on insulin, leading to weight loss and reduction in levels of HbA_lc, systolic blood pressure, triglycerides, and high-sensitivity CRP. (Endocr Pract 2007;13:444-450)     

Insulin Treatment Is Associated with Increased Mortality in Patients with COVID-19 and Type 2 Diabetes

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