ÖZ
Karmaşık bir bozukluk olarak kabul edilen küresel bir sorun olan obezite, çevresel, genetik ve epigenetik faktörlerden etkilenir. Genetik keşifler, epigenetik değişiklikler, beslenme rolleri, hormonal etkiler, inflamasyon ve orta yaşta karın bölgesinde yağlanmanın kesin sorunu öne çıkan faktörlerdir. Bu makale, obezitenin biyolojisiyle ilgili güncel teorilerin bir özetini sunmaktadır. Nöroöstrojenlerin obezite gelişimindeki belirgin rolü de açıklanmıştır. Bu derleme ayrıca, anne obezitesinin fetal karaciğer gelişimini ve daha sonraki çocukluk çağı obezitesini nasıl etkilediğini, anne aşırı beslenmesinin uzun vadeli metabolik etkilerini vurgulayarak incelemektedir. Makale ayrıca, ergenlik obezitesi ve bunun yavruda obezite gelişimine etkisi ile ilgili en son verilerin ve sadece anne obezitesinin değil, baba obezitesinin de yavru üzerindeki etkisinin altını çizmektedir. Nöroöstrojenlerin iştah düzenlemesi ve enerji dengesindeki yeni tanımlanmış rolü, klinik çalışma ve ilaç geliştirme için yeni perspektifler göstermektedir. Ayrıca, obezite için etkili yönetim ve önleme tedbirleri oluşturmak, orta yaşlı bireylerde karın bölgesindeki yağ artışına neden olan mekanizmaları (hormonal değişiklikler, metabolik değişimler ve yaşam tarzı faktörleri gibi) anlamayı gerektirir. Gelişim biyolojisi, genetik ve epigenetikten elde edilen mekanistik bilgilerin klinik uygulaması, obezite bakımında geç aşamadan erken, önleyici ve kişiselleştirilmiş müdahalelere doğru kavramsal bir geçişi desteklemektedir.
Anahtar Kelimeler:
Yağ dokusu öncü hücreleri, nöroöstrojen, epigenetik, FGF19, CP-As
Kaynaklar
1Scully T, Ettela A, LeRoith D, Gallagher EJ. Obesity, type 2 diabetes, and cancer risk. Front Oncol. 2021; 10: 615375.
2Mahmoud AM. An overview of epigenetics in obesity: The role of lifestyle and therapeutic interventions. Int J Mol Sci. 2022; 23: 1341.
3Locke AE, Kahali B, Berndt SI, Justice AE, Pers TH, Day FR, et al. Genetic studies of body mass index yield new insights for obesity biology. Nature. 2015; 518: 197-206.
4Huang C, Chen W, Wang X. Studies on the fat mass and obesity-associated (FTO) gene and its impact on obesity-associated diseases. Genes Dis. 2022; 10: 2351-65.
5Künzel R, Faust H, Bundalian L, Blüher M, Jasaszwili M, Kirstein A, et al. Detecting monogenic obesity: A systematic exome-wide workup of over 500 individuals. Int J Obes (Lond). 2025.
6Lonky S. Outsmarting obesity: A doctor reveals why we gain weight, why it matters, and what we can do about It. Greenleaf Book Group; 2024. Available from: [URL].
7Mijač S, Banić I, Genc AM, Lipej M, Turkalj M. The effects of environmental exposure on epigenetic modifications in allergic diseases. Medicina (Kaunas). 2024; 60: 110.
8Macartney-Coxson D, Benton MC, Blick R, Stubbs RS, Hagan RD, Langston MA. Genome-wide DNA methylation analysis reveals loci that distinguish different types of adipose tissue in obese individuals. Clin Epigenetics. 2017; 9: 48.
9Wali JA, Solon-Biet SM, Freire T, Brandon AE. Macronutrient determinants of obesity, insulin resistance and metabolic health. Biology (Basel). 2021; 10: 336.
10Hayashi T, Kumamoto K, Kobayashi T, Hou X, Nagao S, Harada N, et al. Estrogen synthesized in the central nervous system enhances MC4R expression and reduces food intake. FEBS J. 2025; 292: 3900-9.
11Zangerolamo L, Carvalho M, Solon C, Sidarta-Oliveira D, Soares GM, Marmentini C, et al. Central FGF19 signaling enhances energy homeostasis and adipose tissue thermogenesis through sympathetic activation in obese mice. Am J Physiol Endocrinol Metab. 2025; 328: E524-42.
12Kawai T, Autieri MV, Scalia R. Adipose tissue inflammation and metabolic dysfunction in obesity. Am J Physiol Cell Physiol. 2021; 320: C375-91.
13Mirabelli M, Misiti R, Sicilia L, Brunetti FS, Chiefari E, Brunetti A, et al. Hypoxia in human obesity: new insights from inflammation towards insulin resistance-a narrative review. Int J Mol Sci. 2024; 25: 9802.
14Palmer AK, Jensen MD. Metabolic changes in aging humans: current evidence and therapeutic strategies. J Clin Invest. 2022; 132: e158451.
15Kodoth V, Scaccia S, Aggarwal B. Adverse changes in body composition during the menopausal transition and relation to cardiovascular risk: A contemporary review. Womens Health Rep (New Rochelle). 2022; 3: 573-81.
16van der Valk ES, Savas M, van Rossum EFC. Stress and obesity: Are there more susceptible individuals? Curr Obes Rep. 2018; 7: 193-203.
17Farhana A, Rehman A. Metabolic consequences of weight reduction. [Updated 2023 Jul 10]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025.
18Wang G, Li G, Song A, Zhao Y, Yu J, Wang Y, et al. Distinct adipose progenitor cells emerging with age drive active adipogenesis. Science. 2025; 388: eadj0430.
19Wang J, Chang CY, Yang X, Zhou F, Liu J, Feng Z, et al. Leukemia inhibitory factor, a double-edged sword with therapeutic implications in human diseases. Mol Ther. 2023; 31: 331-43.
20Kim HJ, Kwon O. Nutrition and exercise: cornerstones of health with emphasis on obesity and type 2 diabetes management-a narrative review. Obes Rev. 2024; 25: e13762.
21Chao AM, Jastreboff AM, White MA, Grilo CM, Sinha R. Stress, cortisol, and other appetite-related hormones: Prospective prediction of 6-month changes in food cravings and weight. Obesity (Silver Spring). 2017 25: 713-20.
22Amorín R, Liu L, Moriel P, DiLorenzo N, Lancaster PA, Peñagaricano F. Maternal diet induces persistent DNA methylation changes in the muscle of beef calves. Sci Rep. 2023;13:1587.
23Akkila SS, Noel KI, Ibraheem MM. Adipose tissue elastography, anthropometric parameters and non-alcoholic fatty liver disease in obese adults: A cross-sectional study. Al-Rafidain J Med Sci. 2025 Apr 5;8(2):30-4.
24Harmancıoğlu B, Kabaran S. Maternal high fat diets: impacts on offspring obesity and epigenetic hypothalamic programming. Front Genet. 2023; 14: 1158089.
25St-Germain LE, Castellana B, Baltayeva J, Beristain AG. Maternal Obesity and the Uterine Immune Cell Landscape: The Shaping Role of Inflammation. Int J Mol Sci. 2020; 21: 3776.
26Suter MA, Ma J, Vuguin PM, Hartil K, Fiallo A, Harris RA, Charron MJ, Aagaard KM. In utero exposure to a maternal high-fat diet alters the epigenetic histone code in a murine model. Am J Obstet Gynecol. 2014; 210: 463.e1-11.
27Huang H, Balzer NR, Seep L, Splichalova I, Blank-Stein N, Viola MF, et al. Kupffer cell programming by maternal obesity triggers fatty liver disease. Nature. 2025; 644: 790-8.
28Huang H, Splichalova I, Balzer N, Splichalova I, Blank-Stein N, Viola MF, et al. Developmental programming of Kupffer cells by maternal obesity causes fatty liver disease in the offspring. 10 August 2023, PREPRINT (Version 1) available at Research Square.
29Wang YW, Yu HR, Tiao MM, Tain YL, Lin IC, Sheen JM, et al. Maternal obesity related to high fat diet induces placenta remodeling and gut microbiome shaping that are responsible for fetal liver lipid dysmetabolism. Front Nutr. 2021; 8: 736944.
30Noel KI. A reciprocal relationship between oxidative stress, antioxidants, and cancer: A review. Siriraj Med J. 2024; 76: 550-6.
31Kitaba NT, Østergaard TM, Lønnebotn M, Accordini S, Real FG, Malinovschi A, et al. Father’s adolescent body silhouette is associated with offspring asthma, lung function and BMI through DNA methylation. Commun Biol. 2025; 8: 796.
32Rajić S, Delerue T, Ronkainen J, Zhang R, Ciantar J, Kostiniuk D, et al. Regulation of nc886 (vtRNA2-1) RNAs is associated with cardiometabolic risk factors and diseases. Clin Epigenetics. 2025; 17: 68.
33Heijmans BT, Tobi EW, Stein AD, Putter H, Blauw GJ, Susser ES, et al. Persistent epigenetic differences associated with prenatal exposure to famine in humans. Proc Natl Acad Sci U S A. 2008;105: 17046-9.
34Jaddoe VW, de Jonge LL, Hofman A, Franco OH, Steegers EA, Gaillard R. First trimester fetal growth restriction and cardiovascular risk factors in school age children: Population based cohort study. BMJ. 2014; 348: g14.
35Sharp GC, Alfano R, Ghantous A, Urquiza J, Rifas-Shiman SL, Page CM, et al. Paternal body mass index and offspring DNA methylation: Findings from the PACE consortium. Int J Epidemiol. 2021; 50: 1297-315.
36Soubry A, Schildkraut JM, Murtha A, Wang F, Huang Z, Bernal A, et al. Paternal obesity is associated with IGF2 hypomethylation in newborns: Results from a Newborn Epigenetics Study (NEST) cohort. BMC Med. 2013; 11: 29.
37Al-Rubai A, Ibraheem MM, Hameed AF, Noel KI, Eleiwi SA. Comparison of placental expression of basic fibroblast growth factor and insulin-like growth factor-1 in placentae of normal, pregnancy-induced hypertension, and preeclamptic pregnancies in Iraqi mothers. Medical Journal of Babylon. 2023; 20: 681-8.
38Berenson GS, Srinivasan SR, Bao W, Newman WP 3rd, Tracy RE, Wattigney WA. Association between multiple cardiovascular risk factors and atherosclerosis in children and young adults. The Bogalusa Heart Study. N Engl J Med. 1998; 338: 1650-6.