Obesity and Non-Alcoholic Fatty Liver Disease: Pathophysiology and Management Focused
Article Main Content
The continuing rise of obesity epidemic in the global population has been markedly associated with the escalating occurrence and severity of non-alcoholic fatty liver disease (NAFLD). This condition represents a complex metabolic imbalance, primarily characterized by excessive intrahepatic accumulation of triglycerides, known as hepatic steatosis. This pathophysiological process is initiated by the disproportionation between the uptake of dietary fatty acids in plasma, as well as the increase of de novo fatty acid synthesis, which is not equally accompanied by the exportation and oxidation of fatty acid in the form of triglycerides. As mentioned earlier, the underlying metabolic process becomes a significant risk factor for developing cardiometabolic complications, involving type 2 diabetes mellitus, insulin resistance, and dyslipidemia. This review presents a comprehensive understanding of the pathogenesis and pathophysiology of obesity and NAFLD to determine innovative management approaches for the prevention and treatment of the disease.
References
-
Chalasani, N., Younossi, Z., Lavine, J.E., et al., “The diagnosis and management of non-alcoholic fatty liver disease: practice Guideline by the American Association for the Study of Liver Diseases, American College of Gastroenterology, and the American Gastroenterological Association,” Hepatology, vol. 55, no. 6, pp. 2005-2023, 2012.
DOI
|
Google Scholar
1
-
Leite, N.C., Araujo, A.L., Villela-Nogueira, C.A., et al., “Prevalence and associated factors of non-alcoholic fatty liver disease in patients with type-2 diabetes mellitus,” Liver International: Official Journal of the International Association for the Study of the Liver, vol. 29, no. 1, pp. 113-119, 2009.
DOI
|
Google Scholar
2
-
Ogden, C.L., Carroll, M.D., Kit, B.K., et al., “Prevalence of obesity and trends in body mass index among US children and adolescents, 1999-2010,” JAMA, vol. 307, no. 5, pp. 483-490, 2012.
DOI
|
Google Scholar
3
-
Tsigos, C., Hainer, V., Basdevant, A., et al., “Management of obesity in adults: European clinical practice guidelines,” Obesity Facts, vol. 1, no. 2, pp. 106-116, 2008.
DOI
|
Google Scholar
4
-
Ogden C.L., Carroll M.D., “Prevalence of overweight, obesity, and extreme obesity among adults: United States, trends 1960–1962 through 2007–2008,” National Center for Health Statistics, 2010.
DOI
|
Google Scholar
5
-
Kim, C.H., Younossi, Z.M., “Non-alcoholic fatty liver disease: a manifestation of the metabolic syndrome,” Cleveland Clinic Journal of Medicine, vol. 75, no. 10, pp. 721-728, 2008.
DOI
|
Google Scholar
6
-
Younossi, Z.M., “Review article: current management of non-alcoholic fatty liver disease and non-alcoholic steatohepatitis,” Aliment Pharmacol Ther., vol. 28, pp. 2-12, 2008.
DOI
|
Google Scholar
7
-
Ahmed, A., Wong, R.J., Harrison, S.A., “Non-alcoholic fatty liver disease review: Diagnosis, treatment and outcomes,” Clin Gastroenterol Hepatol., vol. 13, pp. 2062-2070, 2015.
DOI
|
Google Scholar
8
-
Trovato, F.M., Castrogiovanni, P., Szychlinska, M.A., et al., “Early effects of high-fat diet, extra-virgin olive oil and vitamin D in a sedentary rat model of non-alcoholic fatty liver disease,” Histol Histopathol., vol. 33, pp. 1201-1213, 2018.
Google Scholar
9
-
Cholankeril, G., Patel, R., Khurana, S., et al., “Hepatocellular carcinoma in non-alcoholic steatohepatitis: Current knowledge and implications for management,” World J Hepatol., vol. 9, pp. 533-543, 2017.
DOI
|
Google Scholar
10
-
Satapathy, S.K., Sanyal, A.J., “Epidemiology and natural history of non-alcoholic fatty liver disease,” Seminars in Liver Disease, vol. 35, no. 3, pp. 1-15, 2015.
DOI
|
Google Scholar
11
-
Vajro, P., Lenta, S., Socha, P., et al., “Diagnosis of non-alcoholic fatty liver disease in children and adolescents: position paper of the ESPGHAN Hepatology Committee,” JPGN, vol. 54, no. 5, pp. 700-713, 2012.
DOI
|
Google Scholar
12
-
Divella, R., Mazzocca, A., Daniele, A., et al., “Obesity, non-alcoholic fatty liver disease and adipocytokines network in promotion of cancer,” Int J Biol Sci., vol. 15, no. 3, pp. 610-616, 2019.
DOI
|
Google Scholar
13
-
Choi, S., Diehl, A., “Hepatic triglyceride synthesis and non-alcoholic fatty liver disease,” Curr Opin Lipidol., vol. 19, pp. 295-300, 2008.
DOI
|
Google Scholar
14
-
Rector, R.S., Thyfault, J.P., Wei, Y., et al., “Non-alcoholic fatty liver disease and the metabolic syndrome: an update,” World J Gastroenterol, vol. 14, pp. 185-192, 2008.
DOI
|
Google Scholar
15
-
Combs, T., Berg, A., Obici, S., et al., “Endogenous glucose production is inhibited by the adipose-derived protein Acrp30,” J Clin Invest., vol. 108, pp. 1875-1188, 2001.
DOI
|
Google Scholar
16
-
Rajala, M., Scherer, P., “Minireview: the adipocyte at the crossroads of energy homeostasis, inflammation, and atherosclerosis,” Endocrinology, vol. 144, pp. 3765-3773, 2003.
DOI
|
Google Scholar
17
-
Li, Z., Yang, S., Lin, H, et al., “Probiotics and antibodies to TNF inhibit inflammatory activity and improve non-alcoholic fatty liver disease,” Hepatology, vol. 37, pp. 343-359, 2003.
DOI
|
Google Scholar
18
-
Unger, R., “Lipotoxic diseases,” Annu Rev Med., vol. 53, pp. 319-336, 2002.
DOI
|
Google Scholar
19
-
Leclercq, I.A., Farrell, G.C., Schriemer, R., et al., “Leptin is essential for the hepatic fibrogenic response to chronic liver injury,” J Hepatol., vol. 27, pp. 206-213, 2002.
DOI
|
Google Scholar
20
-
Bugianesi, E., McCullough, A., Marchesini, G., “Insulin resistance: A metabolic pathway to chronic liver disease,” Hepatology, vol. 42, pp. 987-1000, 2005.
DOI
|
Google Scholar
21
-
Jiang, J., Torok, N., “Non-alcoholic steatohepatitis and the metabolic syndrome,” Metab Syndr Relat Disord., vol. 6, pp. 1-8, 2005.
Google Scholar
22
-
Angulo P., “Non-alcoholic fatty liver disease,” N Engl J Med., vol. 346, pp. 1221-1231, 2002.
DOI
|
Google Scholar
23
-
Polyzos, S.A., Kountouras, J., Mantzoros, C.S., “Adipose tissue, obesity and non-alcoholic fatty liver disease,” Minerva Endocrinol., vol. 42, pp. 92-108, 2017.
DOI
|
Google Scholar
24
-
Mota, M., Banini, B.A., Cazanave, S.C., et al., “Molecular mechanisms of lipotoxicity and glucotoxicity in non-alcoholic fatty liver disease,” Metabolism, vol. 65, pp. 1049-1061, 2016.
DOI
|
Google Scholar
25
-
Tordjman, J., Guerre-Millo, M., Clement, K., “Adipose tissue inflammation and liver pathology in human obesity,” Diabetes Metab., vol. 34, pp. 658-663, 2008.
DOI
|
Google Scholar
26
-
Nati, M., Haddad, D., Birkenfeld, A.L., et al., “The role of immune cells in metabolism-related liver inflammation and development of non-alcoholic steatohepatitis (NASH),” Rev Endocr Metab Disord., vol. 17, pp. 29-39, 2016.
DOI
|
Google Scholar
27
-
National Institute for Health and Care Excellence (UK), “Non-alcoholic fatty liver disease: assessment and management,” Available from http://www.niceorg.ukguidanceng49.
Google Scholar
28
-
Paul, J., Venugopal, R.V., Peter, L., et al., “Effects of lifestyle modification on liver enzyme and Fibroscan in Indian patients with non-alcoholic fatty liver disease,” Gastroenterol Rep., vol. 6, pp. 49-53, 2018.
DOI
|
Google Scholar
29
-
Saab, S., Mallam, D., Cox, G.A., et al., “Impact of coffee on liver diseases: a systematic review,” Liver Int, vol. 34, pp. 495-504, 2014.
DOI
|
Google Scholar
30
-
Setiawan, V.W., Porcel, J., Wei, P., et al., “Coffee drinking and alcoholic and non-alcoholic fatty liver diseases and viral hepatitis in the multiethnic cohort,” Clin Gastroenterol Hepatol., vol. 15, no. 8, pp. 1305-1307, 2017.
DOI
|
Google Scholar
31
-
Wenxia, L., Sainan, L., Jingjing, L., et al., “Effects of omega-3 fatty acid in non-alcoholic fatty liver disease: a meta-analysis,” Gastroenterol Res Pract., vol. 2016, no. 1459790, 2016.
Google Scholar
32
-
Salomone, F., Galvano, F., Li, V.G., “Molecular bases underlying the hepatoprotective effects of coffee,” Nutrients, vol. 9, no. 1, pp. 85, 2017.
DOI
|
Google Scholar
33
-
Marchesini, G., Day, C.P., Dufour, J.F., et al., “EASL-EASD-EASO clinical practice guidelines for the management of non-alcoholic fatty liver disease,” J Hepatol., vol. 64, pp. 1388-1402, 2016.
DOI
|
Google Scholar
34
-
US Department of Agriculture. Available at: www.choosemyplate.gov; and American Heart Association. Available at: www.heart.org.
Google Scholar
35
-
Kargulewicz, A., Stankowiak-Kulpa, H., Grzymislawski, M., “Dietary recommendations for patients with non-alcoholic fatty liver disease,” Prz Gastroenterol., vol. 9, no. 1, pp. 18-23, 2014.
DOI
|
Google Scholar
36
-
Zelber-Sagi, S., Kessler, A., Brazowsky, E., et al., “A double-blind randomized placebo-controlled trial of orlistat for the treatment of non-alcoholic fatty liver disease,” Clin Gastroenterol Hepatol., vol. 4, pp. 639-644, 2006.
DOI
|
Google Scholar
37
-
Harrison, S.A., Brunt, E.M., Fecht, W.J., et al., “Orlistat for overweight subjects with non-alcoholic steatohepatitis (NASH): a randomized prospective trial,” Hepatology, vol. 49, pp. 80-86, 2009.
DOI
|
Google Scholar
38
-
Uygun, A., Kadayifci, A., Isik, A.T., et al., “Metformin in the treatment of patients with non-alcoholic steatohepatitis,” Aliment Pharmacol Ther., vol. 19, pp. 537-544, 2004.
DOI
|
Google Scholar
39
-
Belfort, R., Harrison, S.A., Brown, K., et al., “A placebo-controlled trial of pioglitazone in subjects with non-alcoholic steatohepatitis,” N Engl J Med., vol. 355, pp. 2297-2307, 2006.
DOI
|
Google Scholar
40
-
Sanyal, A.J., Chalasani, N., Kowdley, K.V., et al., “Pioglitazone, vitamin E, or placebo for nonalcoholic steatohepatitis,” N Engl J Med., vol. 362, pp. 1675-1685, 2010.
DOI
|
Google Scholar
41
-
Lincoff, A., Wolski, K., Nicholls, S., et al., “Pioglitazone and risk of cardiovascular events in patients with type 2 diabetes mellitus: a meta-analysis of randomized trials,” JAMA, vol. 298, pp. 1180- 1188, 2007.
DOI
|
Google Scholar
42
-
Harrison, S.A., Torgerson, S., Hayashi, P., et al., “Vitamin E and vitamin C treatment improves fibrosis in patients with non-alcoholic steatohepatitis,” Am J Gastroenterol, vol. 98, pp. 2485-2490, 2003.
DOI
|
Google Scholar
43
-
Sanyal, A.J., Mofrad, P.S., Contos, M.J., et al., “A pilot study of vitamin E versus vitamin E and pioglitazone for the treatment of non-alcoholic steatohepatitis,” Clin Gastroenterol Hepatol., vol. 2, pp. 1107-1115, 2004.
DOI
|
Google Scholar
44
-
Klein, E.A., Thompson, I.M., Tangen, C.M., et al., “Vitamin E and the risk of prostate cancer. The selenium and vitamin E cancer prevention trial (SELECT),” JAMA, vol. 306, pp. 1549-1556, 2011.
DOI
|
Google Scholar
45
-
Leushner, U., Lindenthal, B., Herrman, G., et al., “High-dose ursodeoxycholic acid therapy for non-alcoholic steatohepatitis: a double-blind, randomized, placebo-controlled trial,” Hepatology, vol. 52, pp. 472-479, 2010.
DOI
|
Google Scholar
46
-
Ratziu, V., de Ledinghen, V., Oberti, F., et al., “A randomized controlled trial of high-dose ursodeoxycholic acid for non-alcoholic steatohepatitis,” J Hepatol., vol. 54, pp. 1011-1019, 2011.
DOI
|
Google Scholar
47
-
Spadaro, L., Magliocco, O., Spampinato, D., et al., “Effects of n-3 polyunsaturated fatty acids in subjects with non-alcoholic fatty liver disease,” Dig Liver Dis., vol. 40, pp. 194-199, 2008.
DOI
|
Google Scholar
48
-
Lewis, J.H., Mortensen, M.E., Zweig, S., et al. in Chronic Liver Disease Study Investigators, “Efficacy and safety of high-dose pravastatin in hypercholesterolemic patients with well-compensated chronic liver disease: results of a prospective, randomized, double-blind, placebo-controlled, multicenter trial,” Hepatology, vol. 46, no. 5, pp. 1453-1463, 2007.
DOI
|
Google Scholar
49
-
Nelson, A, Torres, D.M., Morgan, A.E., et al., “A pilot study using simvastatin in the treatment of non-alcoholic steatohepatitis: a randomized placebo-controlled trial,” J Clin Gastroenterol., vol. 43, pp. 990-994, 2009.
DOI
|
Google Scholar
50
-
Zolfaghari, H., Askari, G., Siassi, F., et al., “Intake of nutrients, fiber, and sugar in patients with non-alcoholic fatty liver disease in comparison to healthy individuals,” Int J Prev Med., vol. 7, no. 98, 2016.
DOI
|
Google Scholar
51
-
Beilfuss, A., Sowa, J.P., Sydor, S., et al., “Vitamin D counteracts fibrogenic TGF-beta signalling in human hepatic stellate cells both receptor-dependently and independently,” Gut, vol. 64, pp. 791-799, 2015.
DOI
|
Google Scholar
52
-
Amiri, H.L., Agah, S., Mousavi, S.N., et al., “Regression of non-alcoholic fatty liver by vitamin D supplement: a double-blind randomized controlled clinical trial,” Arch Iran Med, vol. 19, no. 9, pp. 631-638, 2016.
Google Scholar
53
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