scholarly journals The level of endogenous testosterone and its correlation with lipid profile in men older than 40 years with acute myocardial infarction

2020 ◽  
Vol 77 (8) ◽  
pp. 804-810
Author(s):  
Branko Barac ◽  
Sanja Stankovic ◽  
Milika Asanin ◽  
Zorana Vasiljevic-Pokrajcic ◽  
Svetlana Vujovic
Keyword(s):  
Lipid Profile ◽  
Significant Positive Correlation ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Apolipoprotein A1 ◽  
Acute Myocardial Infarct ◽  
Healthy Men ◽  
Positive Correlation ◽  
Group I ◽  
Group Ii

Background/Aim. The influence of lipid profile on acute myocardial infarct (AMI) is well known. On the other hand, the role of testosterone (T), as one of the possible predictive factors of AMI in men and its influence on lipid profile in men is still controversial. The aim of the study was to determine levels of T in AMI and six months after AMI in the same group of patients, and to compare with T levels in healthy men. Also we correlated T levels with lipid profile in patients with AMI and 6 months after AMI. Methods. The study was designed as prospective study. Patients were divided into III groups: Group I included 35 men, aged 55 ? 3 years, with AMI. Group II included the same 35 patients, analyzed 6 months after AMI. The group III consisted of 20 healthy men aged 57 ? 2.12 years (control group). Blood samples of the group I (AMI) were taken in the first 12 hours from the AMI beginning and also 6 months after AMI (group II). Following analyses were performed: levels of total cholesterol, triglycerides, low density lipoprotein (LDL) cholesterol, high density lipoprotein (HDL) cholesterol, lipoprotein(a) [Lp(a)], apolipoprotein A1 (Apo A1), apolipoprotein B (Apo B) and T. Results. Levels of T in patients with AMI (16.86 ? 7.18 nmol/L) as well as 6 months after AMI (18.12 ? 7.96 nmol/L) were statistically significantly lower than those in healthy persons of the same age (27.11 ? 10.48 nmol/L) (p < 0.001). In the group I, statistically significant, positive correlation was found between levels of T and HDL cholesterol (r = 0.403, p < 0.05), and levels of T and Apo A1 (r = 0.747, p < 0.01). In the group II, statistically significant, positive correlation was also found between levels of T and HDL cholesterol (r = 0.388, p < 0.05) and T and Apo A1(r = 0.354, p < 0.05). Conclusion. This study showed that men, over 40 years of age, with AMI had statistically significantly lower concentrations of endogenous T compared to healthy male population of the same age. Levels of T in the same patients after 6 months from AMI maintained statistically significantly lower values in comparison to those in healthy men.

scholarly journals A Comparative Study of Lipid Profile in Obese and Nonobese Men attending Master Health Checkup

2017 ◽  
Vol 21 (2) ◽  
pp. 73-75
Author(s):  
S Vinod Babu ◽  
Anusha R Jagadeesan ◽  
Jothimalar Ramalingam
Keyword(s):  
Comparative Study ◽  
Lipid Profile ◽  
Total Cholesterol ◽  
Ldl Cholesterol ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
P Value ◽  
Health Checkup ◽  
Group I ◽  
Significant Difference

ABSTRACT Introduction Obesity is emerging as an epidemic worldwide. Obesity is associated with a number of comorbid conditions, such as diabetes mellitus, hypertension, cancer, dyslipidemia, cardiovascular abnormalities, anemia, obstructive sleep apnea, and psychosocial abnormalities. Aim This study aims at comparing the lipid profile levels of obese and nonobese men. Materials and methods This was a case—control study conducted at a tertiary care center. Totally, 80 men in the age group of 20 to 47 years attending the master health checkup were included in the study, out of which 40 men with normal body mass index (BMI) of 18 to 25 belonged to group I and 40 men with increased BMI of 30 and above belonged to group II. Lipid profile parameters, such as triglycerides (TGLs), total cholesterol, high-density lipoprotein (HDL) cholesterol, and low-density lipoprotein (LDL) cholesterol were estimated in them. The data were statistically analyzed using Statistical Package for the Social Sciences (SPSS) software version 15.0. Results Statistically significant difference was found in the total cholesterol levels with a p-value of 0.040 while the difference in LDL cholesterol was statistically highly significant with a p-value of 0.040. Conclusion Among lipid profile parameters, only total cholesterol and LDL cholesterol showed significant difference between the obese and nonobese individuals. However, the other parameters like HDL cholesterol and TGLs did not show any significant difference. How to cite this article Babu SV, Jagadeesan AR, Ramalingam J. A Comparative Study of Lipid Profile in Obese and Nonobese Men attending Master Health Checkup. Indian J Med Biochem 2017;21(2):73-75.

Paraoxonase 1 (PON1) and its relationship to lipid variables, age and gender in healthy volunteers

Biologia ◽  
2006 ◽  
Vol 61 (6) ◽  
Author(s):  
Katarína Sumegová ◽  
Pavel Blažíček ◽  
Bianca Fuhrman ◽  
Iveta Waczulíková ◽  
Zdeňka Ďuračková
Keyword(s):  
Lipid Profile ◽  
Serum Lipid ◽  
Oxidized Ldl ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Atherogenic Index ◽  
Paraoxonase 1 ◽  
Serum Lipid Profile ◽  
Positive Correlation ◽  
Paraoxonase Activity

AbstractRecent studies implied that low-density lipoprotein (LDL) modified predominantly by oxidation or glycation, significantly contributes to the formation of atherosclerotic lesions. In contrast to oxidized LDL (ox-LDL), high-density lipoprotein (HDL) is able to prevent accumulation of ox-LDL in arterial walls. This antiatherogenic property of HDL is attributed in part to several enzymes associated with the lipoprotein, including HDL-associated paraoxonase 1 (PON1). In this study we analyzed PON1 arylesterase/paraoxonase activities in relation to serum lipid profile, gender and age in thirty clinically healthy Slovak volunteers. Our results showed that PON1 arylesterase and paraoxonase activities were lower in citrated plasma than in serum by 16.6% and 27.3%, respectively. Among serum lipoproteins, only HDL-cholesterol level showed significant positive correlation with PON1 arylesterase activity (p = 0.042). Likewise, we found a significant relationship between atherogenic index (AI = total cholesterol/HDL-cholesterol) and PON1 arylesterase activity (p = 0.023). No significant correlation could be demonstrated between PON1 paraoxonase activity and serum lipid profile, age or gender. Furthermore, it was found that PON1 paraoxonase/arylesterase activities were higher in women compared with both investigated activities in men, but these differences were not statistically significant. These results confirmed a positive correlation between HDL-cholesterol and PON1 arylesterase activity. Moreover, it was found out that PON1 paraoxonase activity is not influenced either by gender or by age. PON1 arylesterase activity was however affected by gender to a limited extent.

scholarly journals Apolipoprotein A-I and Apolipoprotein B: Better Indicators of Dyslipidemia in Diabetic Retinopathy Patients?

2017 ◽  
Vol 21 (2) ◽  
pp. 142-146
Author(s):  
Aliya Nusrath ◽  
Dyavegowda Namitha ◽  
Arasegowda Rajeswari ◽  
Yeliyur D Shilpashree ◽  
N Asha Rani
Keyword(s):  
Diabetic Retinopathy ◽  
Lipid Profile ◽  
Plasma Glucose ◽  
Apolipoprotein B ◽  
Density Lipoprotein ◽  
Apo B ◽  
Postprandial Plasma Glucose ◽  
Apolipoprotein A ◽  
Group I ◽  
Group Ii

ABSTRACT Diabetic retinopathy (DR) remains the leading cause of mortality and disability in adults with diabetes. Recently apolipoprotein A-I (Apo A-I) and apolipoprotein B (Apo B) have been found to be associated with biophysiological changes of DR than traditional lipids. The objective of the present study was to evaluate the lipid profile including Apo A-I, Apo B, and Apo B/Apo A-I levels in diabetes patients with or without retinopathy. The present study was conducted at Adichunchanagiri Institute of Medical Sciences and Hospital, India. The total numbers of subjects were 90, divided into three groups. Group I included 30 healthy controls, group II included 30 cases of diabetes mellitus (DM) without retinopathy, and group III had 30 cases of DR. Blood samples were drawn under aseptic precautions from study subjects. The investigations carried out were fasting plasma glucose (FPG), postprandial plasma glucose (PPPG), and lipid profile including Apo A-I and Apo B in all subjects. The FPG, PPPG, lipid profile, and apolipoproteins (Apo A-I and Apo B) were estimated using autoanalyzer EM 200.There was significant increase in FPG, PPPG, total cholesterol, triglycerides (TGs), low-density lipoproteins (LDLs) and no significant decrease in high-density lipoprotein (HDL) levels in group II and III subjects. There was significant decrease in Apo A-I and increase in Apo B levels and Apo B/Apo A-I ratio in group II and III subjects. There is a suggestive association of TGs, LDL, and Apo B/Apo A-I ratio in diabetic subjects with and without retinopathy. The Apo A-I, Apo B, and ratio of Apo B/Apo A-I are strong indicators of dyslipidemia in diabetic and DR patients. The ratio of Apo B/Apo A-I is better associated with DR and may contribute to development and progression of DR. How to cite this article Namitha D, Nusrath A, Rajeswari A, Rani NA, Shilpashree YD. Apolipoprotein A-I and Apolipoprotein B: Better Indicators of Dyslipidemia in Diabetic Retinopathy Patients? Indian J Med Biochem 2017;21(2):142-146.

scholarly journals Pengaruh pemberian yogurt sinbiotik tepung pisang tanduk terhadap profil lipid tikus sindrom metabolik

2017 ◽  
Vol 13 (4) ◽  
pp. 159 ◽  
Author(s):  
Zana Fitriana Octavia ◽  
Kis Djamiatun ◽  
Nyoman Suci
Keyword(s):  
Metabolic Syndrome ◽  
Lipid Profile ◽  
Cholesterol Level ◽  
Total Cholesterol Level ◽  
Intervention Group ◽  
Hdl Cholesterol ◽  
Control Group ◽  
Group I ◽  
Banana Flour ◽  
Group Ii

Background: The metabolic syndrome, which is characterized by hyperglycemia, obesity, dyslipidemia, hypertension, prothrombic and proinflamatory state, is a risk factor for cardiovascular disease and diabetes mellitus. The synbiotic yogurt of tanduk banana (Musa paradisiaca fa. corniculata) flour contains lactic acid bacteria, fructooligosaccarides, flavonoids, and vitamin C which all of them play role in improving the lipid profile.Objective: The aim of this study was to prove the effect of synbiotic yogurt of tanduk banana flour on lipid profile of metabolic syndrome rats.Method: This study was an true experimental with pre-post test  control group design. The subject of this study were 18 metabolic syndrome male Wistar rats divided into 3 groups,i.e control group (standart diet), intervention group I (standart diet and synbiotic yogurt of banana flour 0,009 ml/g weight/day), and intervention group II (standart diet and synbiotic yogurt of banana flour 0,018 ml/g weight/day). The intervention period was 2 weeks. Different test before and after intervention used paired t-test. The difference test between groups used One-Way ANOVA and Kruskal wallis.Results: The result showed that both of intervention group improved lipid profile significantly (p<0,05). The intervention group II showed more effective improvement of lipid profile significantly (p<0,05) than intervention group I. The intervention group II decreased triglycerides level 41,56%; total cholesterol level 41,39%; LDL-cholesterol level 57,5%; and increased HDL-cholesterol level 139,62%.Conclucion: The intervention of synbiotic yogurt of  tanduk banana flour can decrease triglyceride level, total cholesterol level, LDL-cholesterol level, and increase HDL-cholesterol level.

scholarly journals A study of lipid profile in subclinical hypothyroidism in tertiary care hospital, Kolkata, India

2020 ◽  
Vol 7 (5) ◽  
pp. 760
Author(s):  
Kaushik Saha ◽  
Dipa Saha
Keyword(s):  
Lipid Profile ◽  
Total Cholesterol ◽  
Subclinical Hypothyroidism ◽  
Ldl Cholesterol ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Low Density ◽  
Care Hospital ◽  
Group I ◽  
Group Ii

Background: Objective was to study lipid profile in patients of subclinical hypothyroidism in tertiary centre in Kolkata, West Bengal and compare the same with matched controls.Methods: This observational study (single exposure) was conducted May 2019 to Nov 2019 at Department of Medicine, KPC Medical College, Jadavpur, Kolkata in subjects diagnosed with Sub Clinical Hypothyroidism [defined as normal T3 or FT3, normal T4 or FT4, and with increased TSH. Sixty patients with subclinical hypothyroidism were selected after careful exclusion; lipid profile was compared with matched controls.Results: Between the two groups (group I - controls vs. group II - cases), the values were as follows: Mean serum total T3 value was 114.03±29.22 ng/dl vs. 106.15±36.24 ng/dl (p = 0.3476); mean total T4 was 7.07±1.69 μg/dl vs. 6.86±1.31 μg/dl (p = 0.535); mean TSH was 3.17±1.28 μIU/ml vs. 9.77±4.19 μIU/ml (p <0.0001). Lipid profile pattern (group I vs. group II) was as follows: Mean total cholesterol (TC) 125.50±9.18 mg/dl vs. 162.07±42.32 mg/dl (p <0.0001), mean triglycerides (TG) is 136.65±14.82 mg/dl vs. 148.90±65.27 mg/dl (p = 0.3236), low-density lipoprotein (LDL)-cholesterol is 62.17±7.40 mg/dl vs. 98.81±33.26 mg/dl (p <0.0001), high-density lipoprotein (HDL)-cholesterol 39.17±6.62 mg/dl vs. 34.27±9.63 mg/dl (p = 0.0702), very low-density lipoprotein (VLDL) levels are 34.54±15.38 mg/dl vs. 32.08±13.21 mg/dl (p = 0.5245)..Conclusions: Subclinical hypothyroidism is associated with increased serum total cholesterol and LDL-Cholesterol levels. Therefore, there is a potential association between Subclinical hypothyroidism and atherosclerosis.

scholarly journals Relationship of Glycated Haemoglobin with Lipid Profile among Patients with Type 2 Diabetes Mellitus

2017 ◽  
Vol 7 (1) ◽  
pp. 43-47 ◽  
Author(s):  
Tasrina Shamnaz Samdani ◽  
Palash Mitra ◽  
Muhammad Abdur Rahim
Keyword(s):  
Type 2 Diabetes ◽  
Blood Glucose ◽  
Lipid Profile ◽  
Significant Positive Correlation ◽  
Fasting Blood Glucose ◽  
Density Lipoprotein ◽  
Lipoprotein Cholesterol ◽  
Diabetic Patients ◽  
Positive Correlation

Background: Glycated hemoglobin (HbA1c) is widely used as an index of mean glycaemia, a measure of risk for the development of diabetic complications and a measure of the quality of diabetes care. Patients with type 2 diabetes have an increased prevalence of dyslipidemia. Treatment of dyslipidaemia improves cardiovascular outcomes. The aim of this study was to determine the impact of glycemic control on lipid profile.Methods: This cross-sectional study was conducted among 300 type 2 diabetic patients admitted in BIRDEM General Hospital from November 2013 to April 2015. Fasting blood samples were collected and different lipid fractions along with fasting blood glucose and HbA1c were estimated. Pearson’s correlation test was applied to evaluate the correlation between HbA1c and components of lipid profile.Results: The mean value of total cholesterol (TC), triglyceride (TG), low density lipoprotein-cholesterol (LDLC), fasting blood glucose (FBG) and HbA1c were higher and high density lipoprotein-cholesterol (HDL-C) was lower in females when compared with these values for males. HbA1c had significant positive correlation with LDL-C (p=0.045) and negative correlation with HDL-C (p=0.024). Serum lipid profile and glycaemic controls were significantly (p=0.000) better in older age group (age ? 50 years).Conclusions: Significant positive correlation of HbA1c with lipid profiles specially LDL-C suggested that HbA1c can also be used as predictor of dyslipidemia in addition to glycemic control.Birdem Med J 2017; 7(1): 43-47

scholarly journals Spondias mombin promotes gastric mucosa and lipid profile status in gastric ulceration

2014 ◽  
Vol 31 (02) ◽  
pp. 082-088
Author(s):  
A. Akinlolu ◽  
K. Ghazali ◽  
O. Ameen ◽  
A. Odewabi
Keyword(s):  
Lipid Profile ◽  
Gastric Acidity ◽  
Density Lipoprotein ◽  
Physiological Saline ◽  
Gastric Ulceration ◽  
Lipoprotein Cholesterol ◽  
Bark Extract ◽  
Spondias Mombin ◽  
Group I ◽  
Group Ii

Abstract Introduction: Spondias mombin has been reported to possess medicinal properties. Material and Methods: This study evaluated the anti-ulcer properties of Spondias mombin. Rats of Group I received physiological saline only while 40mg/kg/bodyweight of Indomethacin (an ulcerogen) was administered to rats of Groups II - VI. Four hours after administrations of the ulcerogen; rats of Groups III - VI were treated daily with oral administrations of 250, 500 and 1000mg/kg/bodyweight of Spondias mombin bark extract and 40mg/kg/bodyweight of Omeprazole respectively for four days. Rats were euthanized on Days 1 (Group II) and 5 (Groups I and III - VI); stomach and liver samples were removed for evaluations of gastric acidity, histo-pathological and lipid profile status. Results: AAnalyses of gastric acidity and lipid profile status in the stomach and liver samples of rats of Group II showed statistically significant higher levels (P≤0.05) of gastric acidity, total cholesterol, low density lipoprotein-cholesterol and triglycerides but lower high density lipoprotein-cholesterol levels (P≤0.05) when compared to rats of Groups I, and III - VI. Histo-pathological evaluations showed dose-dependent restorations of stomach and liver histology to pre-ulceration states in rats of Groups III - VI. Conclusions: This study concluded that Spondias mombin administrations promoted histo-pathological restorations of the stomach and liver; and lipid profile status of male wistar rats in Indomethacin - induced gastric ulceration.

HDL-enriched miR-30a-5p is associated with HDL-cholesterol levels and glucose metabolism in healthy men and women

Epigenomics ◽  
2021 ◽  
Author(s):  
Andrée-Anne Clément ◽  
Véronique Desgagné ◽  
Cécilia Légaré ◽  
Simon-Pierre Guay ◽  
Marjorie Boyer ◽  
...  
Keyword(s):  
Density Lipoprotein ◽  
Resistance Index ◽  
Hdl Cholesterol ◽  
Model Assessment ◽  
Women Patients ◽  
Men And Women ◽  
Healthy Men ◽  
Cholesterol Levels ◽  
Cardiometabolic Markers ◽  
Generation Sequencing

Aim: To investigate the associations between high-density lipoprotein (HDL)-enriched miRNAs and the cardiometabolic profile of healthy men and women. Patients & methods: miRNAs were quantified using next-generation sequencing of miRNAs extracted from purified HDL and plasma from 17 healthy men and women couples. Results: Among the HDL-enriched miRNAs, miR-30a-5p correlated positively with HDL-cholesterol levels, whereas miR-144-5p and miR-30a-5p were negatively associated with fasting insulin levels and Homeostasis model assessment of insulin resistance index. Overall, miR-30a-5p, miR-150-5p and sex contributed to 45% of HDL-cholesterol variance. A model containing only miR-30a-5p, age and sex explained 41% of fasting glucose variance. Conclusion: HDL-enriched miRNAs, notably miR-30a-5p, are associated with cardiometabolic markers. These miRNAs could play a role in HDL’s protective functions, particularly regarding glucose-insulin homeostasis.

Serum Interleukin-6 and Lipid Atherogenic Index Risk Ratios as Interpreters of Cardiac Disease in Obese and Non Obese Male Patients of Coronary Artery Disease

2021 ◽  
Vol 15 (6) ◽  
pp. 1203-1205
Author(s):  
S. Naz ◽  
M. Raza ◽  
A. Akbar ◽  
A. N. Zaidi ◽  
S. Khaliq ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Lipid Profile ◽  
Interleukin 6 ◽  
Significant Positive Correlation ◽  
Atherogenic Index ◽  
Positive Correlation ◽  
Male Patients ◽  
Artery Disease ◽  
Obese Male

Aim: To evaluate serum Interleukin-6, and lipids as predictors of cardiovascular diseases (CVD) in obese and non obese male patients of coronary artery disease (CAD). Methodology: It was cross-sectional comparative study. Serum Interleukin-6 and lipid profile was determined in non diabetic, non smoker and non hypertensive age matched obese and non obese male patients of CAD and healthy subjects. Sixty male subjects were divided equally into groups. Group 1, healthy controls (n=20), group 2, non obese male patients with CAD (n=20) and group 3 included Obese male patients with CAD (n=20). The serum was assayed for lipid profile and interleukin-6 . Results: Age matched healthy and patients were non diabetics, non hypertensive and non smoker with altered lipid profile in obese and non obese male patients with coronary artery disease. Patients have high serum cholesterol, low density cholesterol(LDL-C), Triglyceride(TG,) very low density lipoprotein(VLDL) and interleukin-6. The High density lipoprotein was lowered in both obese and non obese male patients with CAD. Significant positive correlation was observed in CAD group of IL-6 with TC (rho= 0.405, p= 0.009*) , with TG (rho= 0.639, p= 0.000*) ,with LDL (rho= 0.398, p= 0.002*), with VLDL (rho= 0.315, p= 0.014*). Significant negative correlation was observed in CAD group of IL-6 with HDL (rho= -0.565, p= 0.000*) Significant positive correlation was observed in CAD group of IL-6 .Significant positive correlation of IL-6 was observed with AI (rho= 0.602, p= 0.000*). Conclusion: Dyslipidemia, Raised interleukin-6 and strong positive correlation of Atherogenic index with IL-6 are independent risk factors for CVD; using Atherogenic risk ratios as a screening tool for the estimation of CVD risk is useful in patients with CAD. Keywords: Lipid profile, serum interleukin-6,Atherogenic index,coronary artery disease.

scholarly journals Microbiome signature and diversity regulates the level of energy production under anaerobic condition

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. Shaminur Rahman ◽  
M. Nazmul Hoque ◽  
Joynob Akter Puspo ◽  
M. Rafiul Islam ◽  
Niloy Das ◽  
...  
Keyword(s):  
Indicator Species ◽  
Energy Production ◽  
Environmental Temperature ◽  
Group Iv ◽  
Methanosarcina Barkeri ◽  
Spearman Correlation ◽  
Positive Correlation ◽  
Group Iii ◽  
Group I ◽  
Group Ii

AbstractThe microbiome of the anaerobic digester (AD) regulates the level of energy production. To assess the microbiome diversity and composition in different stages of anaerobic digestion, we collected 16 samples from the AD of cow dung (CD) origin. The samples were categorized into four groups (Group-I, Group-II, Group-III and Group-IV) based on the level of energy production (CH4%), and sequenced through whole metagenome sequencing (WMS). Group-I (n = 2) belonged to initial time of energy production whereas Group-II (n = 5), Group-III (n = 5), and Group-IV (n = 4) had 21–34%, 47–58% and 71–74% of CH4, respectively. The physicochemical analysis revealed that level of energy production (CH4%) had significant positive correlation with digester pH (r = 0.92, p < 0.001), O2 level (%) (r = 0.54, p < 0.05), and environmental temperature (°C) (r = 0.57, p < 0.05). The WMS data mapped to 2800 distinct bacterial, archaeal and viral genomes through PathoScope (PS) and MG-RAST (MR) analyses. We detected 768, 1421, 1819 and 1774 bacterial strains in Group-I, Group-II, Group-III and Group-IV, respectively through PS analysis which were represented by Firmicutes, Bacteroidetes, Proteobacteria, Actinobacteria, Spirochaetes and Fibrobacteres phyla (> 93.0% of the total abundances). Simultaneously, 343 archaeal strains were detected, of which 95.90% strains shared across four metagenomes. We identified 43 dominant species including 31 bacterial and 12 archaeal species in AD microbiomes, of which only archaea showed positive correlation with digester pH, CH4 concentration, pressure and temperature (Spearman correlation; r > 0.6, p < 0.01). The indicator species analysis showed that the species Methanosarcina vacuolate, Dehalococcoides mccartyi, Methanosarcina sp. Kolksee and Methanosarcina barkeri were highly specific for energy production. The correlation network analysis showed that different strains of Euryarcheota and Firmicutes phyla exhibited significant correlation (p = 0.021, Kruskal–Wallis test; with a cutoff of 1.0) with the highest level (74.1%) of energy production (Group-IV). In addition, top CH4 producing microbiomes showed increased genomic functional activities related to one carbon and biotin metabolism, oxidative stress, proteolytic pathways, membrane-type-1-matrix-metalloproteinase (MT1-MMP) pericellular network, acetyl-CoA production, motility and chemotaxis. Importantly, the physicochemical properties of the AD including pH, CH4 concentration (%), pressure, temperature and environmental temperature were found to be positively correlated with these genomic functional potentials and distribution of ARGs and metal resistance pathways (Spearman correlation; r > 0.5, p < 0.01). This study reveals distinct changes in composition and diversity of the AD microbiomes including different indicator species, and their genomic features that are highly specific for energy production.

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