scholarly journals The “GG” genotype of rs26802 variant in the ghrelin gene is a potential protective factor against nonalcoholic fatty liver disease

Author(s):  
Gholamreza Rezamand ◽  
Touraj Mahmoudi ◽  
Seidamir Pasha Tabaeian ◽  
Hamid Farahani ◽  
Fatemeh Shahinmehr ◽  
...  

Abstract Background Nonalcoholic fatty liver disease (NAFLD) is an emerging global chronic liver disease worldwide. Considering the powerful association between NAFLD, insulin resistance (IR) and obesity, as well as the key role of ghrelin in these metabolic disorders, we hypothesized that some single nucleotide polymorphisms (SNPs) of the ghrelin (GHRL) and ghrelin receptor (GHSR) genes might be associated with NAFLD. Methods We conducted a case-control retrospective study of 150 cases with biopsy-proven NAFLD and 155 controls. The diagnosis of NAFLD was established before the start of the genotyping process. All the 305 subjects were genotyped for GHRL SNP rs26802 or -501T>G and GHSR SNP rs572169 or Arg159Arg using the PCR-RFLP method. Results The GHRL rs26802 “GG” genotype compared with the “TT” genotype and “TT+TG” genotype appears to be a marker of decreased NAFLD susceptibility even after adjustment for confounding factors (P = 0.006; OR = 0.14, 95% CI = 0.03–0.56 and P = 0.003; OR = 0.16, 95% CI = 0.05–0.53, respectively). However, we observed no significant difference in genotype or allele frequencies between the cases and controls for GHSR SNP rs572169. Conclusions These findings proposed, for the first time, that the GHRL rs26802 “GG” genotype has a protective effect against NAFLD. Nonetheless, this observation warrants further investigations in other populations.

2021 ◽  
Vol 30 (2) ◽  
pp. 233-239
Author(s):  
Seidamir Pasha Tabaeian ◽  
Touraj Mahmoudi ◽  
Mohammad Sabzikarian ◽  
Gholamreza Rezamand ◽  
Reza Dabiri ◽  
...  

Background and Aims: Nonalcoholic fatty liver disease (NAFLD) is a growing problem and the commonest cause of chronic liver disease throughout the world. Given the strong association between NAFLD and insulin resistance and obesity, as well as the central role of ghrelin in these metabolic disorders, we explored whether ghrelin (GHRL) and ghrelin receptor (GHSR) gene polymorphisms were associated with susceptibility to NAFLD. Methods: In this case-control retrospective study which was conducted between April 2010 and July 2013, GHRL (rs696217 or Leu72Met) and GHSR (rs2922126) gene polymorphisms were genotyped in 153 cases with biopsy-proven NAFLD and 157 controls using the polymerase chain reaction - restriction fragment length polymorphism method. Results: The GHRL rs696217 “GT+TT” genotype or “GT” genotype compared with the “GG” genotype occurred less frequently in the patients with NAFLD than the controls and the differences remained significant after adjustment for confounding factors such as age and body mass index (p=0.018; OR=0.35, 95%CI: 0.14–0.84 and p=0.046; OR=0.40, 95%CI: 0.16–0.98, respectively). Furthermore, the GHRL rs696217 ‘T’ allele compared with ‘G’ allele was significantly underrepresented in the cases (p=0.007; OR=0.33, 95%CI: 0.15-0.76). Nevertheless, no significant difference was found for GHSR rs2922126 gene polymorphism. Conclusions: Our findings suggested, for the first time, that the GHRL rs696217 or Leu72Met “GT+TT” genotype and “GT” genotype compared with “GG” genotype, as well as the “T” or Met72 allele compared with “G” or Leu72 allele had a protective effect for NAFLD susceptibility. However, other studies are required to confirm these findings.


2021 ◽  
Vol 5 (2) ◽  
pp. 34-37
Author(s):  
Zhahid Hassan ◽  
Muzamil Latief ◽  
Mahroosa Ramzan ◽  
Farhat Abbas ◽  
Summyia Farooq

Nonalcoholic fatty liver disease (NAFLD) is associated with insulin resistance, obesity, and other features of metabolic syndrome. It is identified as the most common cause of liver enzyme derangement. Lately, NAFLD has generated interest in exploring treatment options, including weight loss and dietary interventions. An association of NAFLD with metabolic syndrome has been suggested in contemporary literature. In this study, we attempted to look into the association of NAFLD with metabolic syndrome. In this study, 80 adult NAFLD patients were recruited from a tertiary care hospital. Among these, 42 were males and 38 females with a mean age of 44.46±13.146 years (range 18–82 years). Grades of fatty liver and presence or absence of metabolic syndrome were studied in this patient population. Patients who did not qualify for the criteria of met-abolic syndrome were placed in Group 1 and those who fulfilled the stated criteria were considered in Group 2. There were 29 (36.25%) patients in Group 1 and 51 (63.75%) in Group 2. All the patients in Group 1 were having Grade I fatty liver whereas patients in Group 2 were found to having varying grades of fatty liver, with six patients having Grade III fatty liver. We found statistically significant difference in various parameters of study (liver enzymes, high-density lipoprotein (HDL), triglycerides, and blood pressure) between Group 1 and Group 2. Ultrasound evidence of a fatty liver should be considered as a predictor of metabolic syndrome, and these patients must be investigated for the different components of metabolic syndrome so as to have early diagnosis and intervention to alter development of long-term metabolic disorders and their inherent complications.


2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Bin Huang ◽  
Shengju Yang ◽  
Shandong Ye

Thyroid function and type 2 diabetes mellitus (T2DM) are both associated with increased risks of adverse clinical outcomes in nonalcoholic fatty liver disease (NAFLD). Our study is aimed at evaluating the association between thyroid function and NAFLD in T2DM patients with normal thyroid function (euthyroid) and analyzing the potential effects of metformin on the pathological process. Overall, 369 T2DM patients were enrolled between July 2017 and September 2018 and stratified into NAFLD and non-NAFLD groups. Data on age, gender, body mass index (BMI, kg/m2), metformin use, and basal metabolic rate (BMR) were obtained from participants’ records. All patients were tested for biochemical markers, indexes of glucose metabolism, lipid metabolism, bone metabolism, and thyroid function at baseline. Multivariate analyses detected increased odds of NAFLD among individuals with T2DM per unit increase in their BMI and free triiodothyronine (FT3) and thyroid stimulating hormone (TSH); the odds ratios (OR) were 1.25, 3.02, and 1.58, respectively (all p<0.05). Positive correlations were detected between alanine aminotransferase (ALT) and FT3 (r=0.221, p=0.010), and negative correlations were noted between TSH and BMR (r=−0.618, p<0.001) and between BMR and FT3 (r=−0.452, p<0.001) in T2DM subjects with NAFLD. A significant difference in serum FT3 (t=2.468, p=0.0167) and TSH (t=2.658, p=0.010) levels was found between obese individuals with NAFLD who used and did not use metformin. The pathological mechanism of T2DM complicated by NAFLD in euthyroid patients may be associated with insulin resistance and a thyroid hormone resistance-like manifestation, i.e., relevant hypothyroidism. Metformin can potentially decrease the double-resistance situation, especially in obese individuals.


2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Qing-Yang Xu ◽  
Han Li ◽  
Hai-Xia Cao ◽  
Qin Pan ◽  
Jian-Gao Fan

Single-nucleotide polymorphisms (SNPs) of apolipoprotein C3 (APOC3) play important role in lipid metabolism, and dyslipidemia underlies nonalcoholic fatty liver disease (NAFLD). But the correlation of serum lipidomics, APOC3 SNPs, and NAFLD remains limited understood. Enrolling thirty-four biopsy-proven NAFLD patients from Tianjin, Shanghai, Fujian, we investigated their APOC3 genotype and serum lipid profile by DNA sequencing and ultraperformance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), respectively. Scoring of hepatocyte steatosis, ballooning, lobular inflammation, and liver fibrosis was then performed to reveal the role of lipidomics-affecting APOC3 SNPs in NAFLD-specific pathological alterations. Here, we reported that APOC3 SNPs (rs4225, rs4520, rs5128, rs2070666, and rs2070667) intimately correlated to serum lipidomics in NAFLD patients. A allele instead of G allele at rs2070667, which dominated the SNPs underlying lipidomic alteration, exhibited downregulatory effect on triacylglycerols (TGs: TG 54 : 7, TG 54 : 8, and TG 56 : 9) containing polyunsaturated fatty acid (PUFA). Moreover, subjects with low-level PUFA-containing TGs were predisposed to high-grade lobular inflammation (TG 54 : 7, rho = − 0.454 and P = 0.007 ; TG 54 : 8, rho = − 0.411 and P =0.016; TG 56 : 9, rho = − 0.481 and P = 0.004 ). The significant correlation of APOC3 rs2070667 and inflammation grading [G/G vs. G/A+A/A: 0.00 (0.00 and 1.00) vs. 1.50 (0.75 and 2.00), P = 0.022 ] further confirmed its pathological action on the basis of lipidomics-impacting activity. These findings suggest an inhibitory effect of A allele at APOC3 rs2070667 on serum levels of PUFA-containing TGs, which are associated with high-grade lobular inflammation in NAFLD patients.


2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Takumi Hirata ◽  
Kengo Tomita ◽  
Toshihide Kawai ◽  
Hirokazu Yokoyama ◽  
Akira Shimada ◽  
...  

Aim.This study compared the effects of telmisartan and losartan on nonalcoholic fatty liver disease (NAFLD) and biochemical markers of insulin resistance in hypertensive NAFLD patients with type 2 diabetes mellitus.Methods.This was a randomized, open-label, parallel-group comparison of therapy with telmisartan or losartan. Nineteen hypertensive NAFLD patients with type 2 diabetes were randomly assigned to receive telmisartan at a dose of 20 mg once a day (n=12) or losartan at a dose of 50 mg once a day (n=7) for 12 months. Body fat area as determined by CT scanning and hepatic fat content based on the liver-to-spleen (L/S) ratio, as well as several parameters of glycemic and lipid metabolism, were compared before and after 12 months.Results.The telmisartan group showed a significant decline in serum free fatty acid (FFA) level (from0.87±0.26to0.59±0.22 mEq/L (mean ± SD),P=0.005) and a significant increase in L/S ratio (P=0.049) evaluated by CT scan, while these parameters were not changed in the losartan group.Conclusion.Although there was no significant difference in improvement in liver enzymes with telmisartan and losartan treatment in hypertensive NAFLD patients with type 2 diabetes after 12 months, it is suggested that telmisartan may exert beneficial effects by improving fatty liver.Erratum to “Effect of Telmisartan or Losartan for Treatment of Nonalcoholic Fatty Liver Disease: Fatty Liver Protection Trial by Telmisartan or Losartan Study (FANTASY)”


2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Tamara Milovanovic Alempijevic ◽  
Milica Stojkovic Lalosevic ◽  
Igor Dumic ◽  
Nevena Jocic ◽  
Aleksandra Pavlovic Markovic ◽  
...  

Objective. Keeping in mind the rising prevalence of nonalcoholic fatty liver disease (NAFLD) and the need to establish noninvasive tests for its detection, the aim of our study was to investigate whether platelet count (PC), mean platelet volume (MPV), and platelet distribution width (PDW) can predict the presence of liver fibrosis in this group of patients. Methods. In 98 patients with NAFLD and 60 healthy volunteers, complete blood counts with automated differential counts were performed and values of PC, PDW, MPV, and PCT were analyzed. Results. Patients with NAFLD had lower PC and higher MPV, PCT, and PDW compared to the controls (P < 0.05). When NAFLD group was stratified according to severity of liver fibrosis, there was a statistically significant difference in the average values of PDW and PC between the groups (P < 0.05). Conclusion. Patients with NAFLD have significantly higher values of PCT, PDW, and MPV when compared to the healthy controls. Further studies are needed to establish their potential use for prediction of the degree of liver steatosis and fibrosis in NAFLD patients.


Author(s):  
Bin Liu ◽  
Huan Zheng ◽  
Guanghui Liu ◽  
Zhiling Li

Background: Insulin resistance(IR) is confirmed as a key feature of nonalcoholic fatty liver disease (NAFLD) in children and adolescents. Numerous studies report that adiponectin (APN) levels are inversely associated with the status of IR in adults with NAFLD. This study aimed to investigate the relationship between serum total APNand homeostasis model assessment insulin resistance(HOMA-IR) in adolescents with NAFLD. Methods: 382 newly-diagnosed NAFLD adolescents, aged 9-16 years old, were enrolled and divided into 3 subgroups according to the APNtertile. Simple and multiple linear regression analyses were performed to assess the correlation between HOMA-IR and APN in boys and girls, respectively. Results: The HOMA-IR values tended to decrease in boys according to APN tertiles: 5.6(4.4-7.3) vs. 5.2(4.6-6.9) vs. 4.9(4.1-5.8) (P<0.01), and there was a significant difference in the HOMA-IR values among three APN tertile subgroups in girls(P<0.01).Univariate analysis showed thatbody mass index, waist circumference, weight-to-height ratio, fasting blood glucose, insulin, triglyceride, and APN were significantly associated with HOMA-IR in boys (P<0.05). In girls, body mass index, fasting blood glucose, insulin, total cholesterol, triglyceride, and APN were significantly associated with HOMA-IR (P<0.05).APN was found to be a significant determinant for HOMA-IR only in boys (β=-0.147, P<0.01). Conclusion: Our findings showed that APN was an independent and significant determinant for increased HOMA-IR in boys with NAFLD. Further studies are needed to explore the underlying mechanisms.


QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Emad A Awad ◽  
Ahmed M ElGhandour ◽  
Ahmed M Mansour ◽  
Riham H AbdelHamid

Abstract Background Nonalcoholic fatty liver disease (NAFLD) is the most prevalent chronic liver disease worldwide, ranging from simple steatosis and nonalcoholic steatohepatitis (NASH) to liver cirrhosis, with its complications including hepatocellular carcinoma (HCC). Aim of the Work to evaluate the efficacy and reliability of Hyaluronic Acid as a potential noninvasive biomarker for diagnosis and prognosis of NAFLD and to compare it with the traditional noninvasive techniques and if it can replace liver biopsy. Patients and Methods This cross-sectional study was conducted on 63 subjects from the Gastroenterology and Hepatology Department of Ain Shams University Hospital. They were divided into three different groups as following: a healthy control group, fatty liver and nonalcoholic steatohepatitis (NASH). All patients and controls were subjected to routine laboratory tests and serum Hyaluronic acid test. Results There were high statistical significant differences between groups as regard INR. Regarding to liver functions, there was a high statistical significant difference between groups as regard AST and ALT ,Bilirubin and Albumin.. Comparison between groups regarding to RBS, there was high statistical significant difference between groups as regard RBS. Comparison between groups regarding to lipid profile, there was high statistical significant difference between groups as regard LDL and cholesterol. Regarding to APRI and Fib4, there was high statistical significant difference between groups as regard APRI and Fib4. Regarding to H.A, there was high statistical significant difference between groups as regard H.A. The study shows that there is non-significant correlation between either APRI or Fib4 and H.A in fatty liver, and there is also nonsignificant correlation either APRI or Fib4 and H.A in NASH. Conclusion Hyaluronic Acid can be reliably used as an accurate and specific noninvasive biomarker for the diagnosis of Nonalcoholic fatty Liver Disease and staging of the severity of disease compared with the traditional known noninvasive scores


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