Endocrinology and metabolism (Seoul, Korea)最新文献

{"title":"Revisiting Pituitary Incidentalomas: Insights from Prevalence Data and Consensus Recommendations.","authors":"Yoon-A Hwang, Cheol Ryong Ku","doi":"10.3803/EnM.2025.2688","DOIUrl":"https://doi.org/10.3803/EnM.2025.2688","url":null,"abstract":"","PeriodicalId":520607,"journal":{"name":"Endocrinology and metabolism (Seoul, Korea)","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145338249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"LGALS3BP Induces Insulin Resistance via TLR2-IKKα/β Pathway-Mediated IRS1 Serine Phosphorylation.","authors":"Minjeong Sung, Dae-Hwan Kim, Eun-Gene Sun, Jun-Eul Hwang, Sang-Hee Cho, Ik-Joo Chung, Hyun-Jeong Shim, Woo Kyun Bae","doi":"10.3803/EnM.2025.2448","DOIUrl":"https://doi.org/10.3803/EnM.2025.2448","url":null,"abstract":"<p><strong>Background: </strong>Insulin resistance (IR) disrupts hepatic glucose and lipid metabolism, contributing to metabolic dysfunction-associated steatotic liver disease (MASLD) and progression to severe liver complications. Galectin-3-binding protein (LGALS3BP) is a secreted glycoprotein implicated in inflammation and metabolic disorders. Elevated LGALS3BP levels are associated with MASLD and type 2 diabetes (T2D), but its role in IR remains unclear.</p><p><strong>Methods: </strong>LGALS3BP-deficient models were used to investigate its role in IR and inflammation. Glucose metabolism and insulin signaling were assessed in high-fat diet (HFD)-fed mice. Hepatic cell lines were employed to evaluate the direct effects of LGALS3BP on insulin signaling and inflammation. Mechanistic insights were obtained through RNA sequencing, structural modeling, immunoprecipitation, and protein/gene expression analyses.</p><p><strong>Results: </strong>LGALS3BP deficiency improved insulin sensitivity in HFD-fed mice by enhancing glucose tolerance, lowering serum glucose and insulin, and increasing hepatic insulin signaling, without altering lipid accumulation. In vitro, LGALS3BP deficiency enhanced insulin signaling and suppressed gluconeogenesis, whereas recombinant LGALS3BP impaired insulin signaling and upregulated gluconeogenesis. RNA sequencing revealed activation of Toll-like receptor 2 (TLR2) and nuclear factor-kappa B (NF-κB) pathways by LGALS3BP. Immunoprecipitation confirmed a direct interaction between LGALS3BP and TLR2, leading to inhibitor kappa kinase (IKK)/NF-κB activation and increased insulin receptor substrate-1 (IRS1) serine phosphorylation, a key inhibitory modification in IR. Furthermore, LGALS3BP deficiency attenuated hepatic fibrosis under chronic HFD, accompanied by downregulated inflammatory signaling pathways.</p><p><strong>Conclusion: </strong>LGALS3BP contributes to IR through inflammatory responses, particularly via TLR2-IKKα/β signaling that regulates IRS1 serine phosphorylation. LGALS3BP deficiency improves insulin sensitivity and reduces inflammation, suggesting that targeting LGALS3BP may represent a potential therapeutic strategy for metabolic disorders such as T2D and MASLD.</p>","PeriodicalId":520607,"journal":{"name":"Endocrinology and metabolism (Seoul, Korea)","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145351270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Early Dose Escalation of Tirzepatide after Switching from Semaglutide in Type 2 Diabetes Mellitus.","authors":"Noboru Kurinami, Masafumi Takada, Seigo Sugiyama, Akira Yoshida, Kunio Hieshima, Tomoko Suzuki, Fumio Miyamoto, Keizo Kajiwara, Katsunori Jinnouchi, Kenji Ashida, Masatoshi Nomura, Hideaki Jinnouchi","doi":"10.3803/EnM.2025.2420","DOIUrl":"https://doi.org/10.3803/EnM.2025.2420","url":null,"abstract":"<p><p>Tirzepatide has demonstrated greater efficacy than semaglutide in improving glycemic control and reducing body weight in patients with type 2 diabetes mellitus (T2DM). However, the optimal tirzepatide dose following a switch from 1.0 mg of semaglutide remains unclear. This retrospective study included 15 T2DM patients who switched to tirzepatide due to inadequate weight loss. All patients started tirzepatide at 2.5 mg, with escalation to either 7.5 mg (n=10) or 10 mg (n=5). Changes in glycated hemoglobin (HbA1c) and body weight were assessed over a 3-month period. The 10 mg group experienced a significant reduction in HbA1c (-0.7%±0.3%, P<0.01) and a non-significant trend toward weight loss (-6.6±5.4 kg, P=0.07). In contrast, no significant changes were observed in the 7.5 mg group. There were no statistically significant differences between groups. Since 10 mg of tirzepatide significantly improved glycemic control after switching from 1.0 mg of semaglutide, early escalation to 10 mg may be beneficial for patients who respond inadequately to semaglutide.</p>","PeriodicalId":520607,"journal":{"name":"Endocrinology and metabolism (Seoul, Korea)","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145295025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lack of Association between Vitamin D Insufficiency and Cardiovascular or Fracture Risk: A UK Biobank Study.","authors":"Yongin Cho, Jong Hyun Jhee, Jong Ho Jhee, Hye-Sun Park","doi":"10.3803/EnM.2025.2482","DOIUrl":"https://doi.org/10.3803/EnM.2025.2482","url":null,"abstract":"<p><strong>Background: </strong>Vitamin D deficiency has been linked to increased risks of fractures and cardiovascular (CV) events, but the clinical relevance of the 'insufficiency' range remains unclear. We investigated CV and fracture risks across vitamin D levels, with a focus on the insufficiency range.</p><p><strong>Methods: </strong>Using UK Biobank data, we analyzed 375,044 participants aged 40 to 69 years. Vitamin D status was categorized as deficient (<50 nmol/L), insufficient (≥50 to <75 nmol/L), or sufficient (≥75 nmol/L). Outcomes included three-point major adverse cardiovascular events (3P-MACE; myocardial infarction, stroke, and CV mortality) and major osteoporotic fractures, assessed via hospital records, registries, and death certificates.</p><p><strong>Results: </strong>The vitamin D-deficient group had an increased risk of CV events (adjusted hazard ratio [aHR], 1.17; 95% confidence interval [CI], 1.11 to 1.24) and fractures (aHR, 1.09; 95% CI, 1.01 to 1.18) compared to the vitamin D-sufficient group. Within the deficient group, the severely deficient group (<30 nmol/L) exhibited a markedly higher risk (aHR, 1.29; 95% CI, 1.21 to 1.37 for 3PMACE; and aHR, 1.20; 95% CI, 1.10 to 1.32 for fractures). In contrast, the vitamin D-insufficient group (50 to 75 nmol/L) showed no significant increase in the risk of either outcome, with no clear benefit or harm observed. Spline curve analysis revealed a negative correlation between vitamin D levels and risk, which was observed only within the deficient range and not within the insufficient range.</p><p><strong>Conclusion: </strong>Vitamin D deficiency is strongly associated with increased CV disease and fracture risks, whereas the insufficiency range shows no significant risk or benefit, raising questions about its clinical relevance.</p>","PeriodicalId":520607,"journal":{"name":"Endocrinology and metabolism (Seoul, Korea)","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145294988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Progranulin Deficiency on Inflammation and Fibrosis in the Kidneys and Liver of Diabetic Mice Fed a High-Fat Diet.","authors":"Hiroko Sakuma, Maki Murakoshi, Shinji Hagiwara, Terumi Shibata, Yusuke Suzuki, Tomohito Gohda","doi":"10.3803/EnM.2025.2339","DOIUrl":"https://doi.org/10.3803/EnM.2025.2339","url":null,"abstract":"<p><strong>Background: </strong>Progranulin (PGRN) is an important regulator of inflammation, insulin resistance, and autophagy. However, the effects of PGRN deficiency on these processes in the kidneys and liver in diabetes remain unclear. In addition, the differential effects of PGRN deficiency and sodium-glucose co-transporter-2 (SGLT2) inhibitors on these organs are unknown.</p><p><strong>Methods: </strong>Three diabetic mouse models were used: high-fat diet and nicotinamide/streptozotocin-induced diabetic wild-type (WT) and PGRN-knockout (KO) mice (WT-diabetes mellitus [DM] and KO-DM, respectively) and WT-DM mice treated with an SGLT2 inhibitor (tofogliflozin; WT-DM/Tofo).</p><p><strong>Results: </strong>Despite similar glycemic control in WT-DM/Tofo and KO-DM mice, expression of inflammation- and fibrosis-related genes in the kidneys was highest in WT-DM mice, lower in KO-DM mice, and lowest in WT-DM/Tofo mice. WT-DM/Tofo mice also showed increased anti-microtubule-associated protein 1A/1B-light chain 3B and decreased p62 protein levels compared with KO-DM mice. In contrast, hepatic mRNA levels related to inflammation and fibrosis were improved in both WT-DM/Tofo and KO-DM mice. Moreover, hepatic protein levels of peroxisome proliferator-activated receptor γ (PPARγ) were elevated in both groups compared with WT-DM mice, while those of PPARα were increased in WT-DM/Tofo mice compared with both WT-DM and KO-DM mice.</p><p><strong>Conclusion: </strong>Kidney inflammation and fibrosis were ameliorated in WT-DM/Tofo mice, but these improvements were limited by autophagy insufficiency in KO-DM mice. Additionally, both WT-DM/Tofo and KO-DM mice demonstrated improved liver inflammation and fibrosis; in the former, this was associated with enhanced fatty acid oxidation via PPARα activation, while in the latter, it appeared to result from improved insulin sensitivity and anti-inflammatory effects through PPARγ activation.</p>","PeriodicalId":520607,"journal":{"name":"Endocrinology and metabolism (Seoul, Korea)","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145194385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating Birth and Thyroid Outcomes of Maternal-Fetal Environmental Exposures (IBM-E): A Cohort Protocol for Dietary Iodine and Endocrine Disruptors.","authors":"Yun Ji Jung, Jeong Eun Shin, Ju-Hee Yoon, Suhra Kim, Hayan Kwon, Sungbo Shim, Dong Yeob Shin, Minseo Gim, Younglim Kho, JoonHo Lee","doi":"10.3803/EnM.2025.2475","DOIUrl":"https://doi.org/10.3803/EnM.2025.2475","url":null,"abstract":"<p><strong>Background: </strong>Endocrine-disrupting chemicals (EDCs) are environmental pollutants that may impair maternal and fetal health by disrupting hormonal systems, including the thyroid. Both iodine deficiency and excess are associated with thyroid dysfunction and adverse obstetrical outcomes. However, the combined impacts of EDCs and iodine exposure on maternal-fetal thyroid homeostasis remain undetermined. We established the Investigating Birth and Thyroid Outcomes of Maternal-Fetal Environmental Exposures (IBM-E) cohort to prospectively assess the effects of maternal exposures to dietary iodine and EDCs on thyroid function, pregnancy complications, and offspring growth and development.</p><p><strong>Methods: </strong>In this prospective observational study, we aim to enroll 556 pregnant women between 2024 and 2027 at a tertiary hospital in Korea. Maternal blood and urine samples will be collected at six time points, spanning from early pregnancy through 15 months postpartum, with infant samples collected at three time points. EDCs will be quantified using ultra-high performance liquid chromatography-tandem mass spectrometry. Thyroid function and urinary iodine concentration will be measured in both mothers and infants.</p><p><strong>Results: </strong>As of the current interim analyses of 193 mothers and 229 neonates, 15.0% of mothers had thyroid dysfunction and 11.4% developed preeclampsia. Preterm birth occurred in 23.8% of cases, and 16.6% of neonates were small for gestational age.</p><p><strong>Conclusion: </strong>The IBM-E cohort is designed to enable the longitudinal assessment of gestational environmental exposures and their potential impacts on maternal and fetal thyroid function, as well as pregnancy and neonatal outcomes. The findings of this study may inform preventive strategies and guide policy development in perinatal environmental health.</p>","PeriodicalId":520607,"journal":{"name":"Endocrinology and metabolism (Seoul, Korea)","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145139870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High TRAb Titer at Diagnosis Predicts Persistent Positivity and Relapse in Graves' Disease after Prolonged Antithyroid Therapy.","authors":"Zimiao Chen, Jinglu Xu, Wenrui Kang, Yang Zhang, Rujun Chen, Xiaohua Gong","doi":"10.3803/EnM.2025.2405","DOIUrl":"https://doi.org/10.3803/EnM.2025.2405","url":null,"abstract":"<p><strong>Background: </strong>The association between high thyrotropin receptor antibody (TRAb) titers at diagnosis and long-term outcomes following prolonged antithyroid drug (ATD) therapy in Graves' disease (GD) remains unclear. This study examined TRAb dynamics and outcomes in high-titer patients receiving prolonged ATD.</p><p><strong>Methods: </strong>In this retrospective cohort (2018-2021), 1,148 of 3,052 newly diagnosed GD patients met inclusion criteria (≥18-month ATD course, TRAb negativity before withdrawal, and ≥12-month follow-up). Initial TRAb levels were defined as low-titer (<5.25 IU/L, 3×upper normal limit [UNL]), intermediate-titer (5.25-10.5 IU/L), and high-titer (>10.5 IU/L, 6×UNL). Outcomes included TRAb dynamics, treatment duration, and relapse.</p><p><strong>Results: </strong>High-titer patients required longer therapy (50 months vs. 30 months vs. 22 months, P<0.001) and slower thyroid-stimulating hormone normalization (6 months vs. 4 months vs. 2 months, both P<0.001). TRAb negativity at 24/48 months occurred in 91.85%/99.26% (low-titer), 52.38%/75.24% (intermediate-titer), and 12.70%/52.68% (high-titer) (P<0.001). High-titer patients showed fluctuant (46.20%) or smoldering (28.89%) trends. Remission rates declined with higher TRAb titer (60.45% vs. 42.70% vs. 30.47%, P<0.001). High-titer patients showed increased risk of persistent TRAb positivity (2.17-fold; 95% confidence interval [CI], 1.55 to 3.05) and relapse (1.66-fold; 95% CI, 1.45 to 3.22). Thresholds of 10.90 IU/L and 16.01 IU/L predicted positivity and relapse, respectively. Definitive therapy post-relapse was more common in high-titer patients (38.29% vs. 16.98% in low-titer, P<0.001).</p><p><strong>Conclusion: </strong>High TRAb titers strongly predict persistent TRAb positivity and relapse after ATD withdrawal. Cut-off at 10.90 and 16.01 IU/L may guide prognosis and treatment.</p>","PeriodicalId":520607,"journal":{"name":"Endocrinology and metabolism (Seoul, Korea)","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145070721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Establishing Blood-Based Biomarkers for Sarcopenia: Current Challenges and Future Directions.","authors":"Beom-Jun Kim","doi":"10.3803/EnM.2025.2600","DOIUrl":"https://doi.org/10.3803/EnM.2025.2600","url":null,"abstract":"","PeriodicalId":520607,"journal":{"name":"Endocrinology and metabolism (Seoul, Korea)","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144985279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical Utility of Liquid Chromatography-Tandem Mass Spectrometry for Thyroglobulin Measurement in Comparison with Immunoradiometric Assay and Chemiluminescence Microparticle Immunoassay.","authors":"Hyunju Park, Eungjun Yoon, Sang-Mi Kim, Tae Hyuk Kim, Jae Hoon Chung, Soo-Youn Lee, Sun Wook Kim","doi":"10.3803/EnM.2025.2413","DOIUrl":"https://doi.org/10.3803/EnM.2025.2413","url":null,"abstract":"<p><strong>Background: </strong>The liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed to overcome interference from thyroglobulin autoantibodies (TgAb); however, it has not yet been implemented in Korea. This study aimed to confirm the accuracy of LC-MS/MS compared to conventional methods and to identify its advantages in patients with thyroid carcinoma (TC).</p><p><strong>Methods: </strong>A total of 206 TC and 18 Hashimoto's thyroiditis samples were collected. TgAb-positive (TgAb-P) was defined as TgAb >60 U/mL. Tg testing was performed using LC-MS/MS, immunoradiometric assay (Tg-IRMA), and chemiluminescence microparticle immunoassay (Tg-CMIA). The interference of TgAb in LC-MS/MS and CMIA methods was evaluated through an in vitro TgAb spiking experiment.</p><p><strong>Results: </strong>The frequency of TgAb-P in TC samples was 76.2%. Correlations between assays were as follows: Tg measurements made by LC-MS/MS (Tg-MS) and Tg-IRMA (R=0.93), Tg-MS and Tg-CMIA (R=0.96), and Tg-CMIA and Tg-IRMA (R=0.99), and it was lower in TgAb-P than TgAb-negative group. Clinical factors (total thyroidectomy, thyroid lobectomy, and Hashimoto's thyroiditis) did not affect these correlations. In TgAb spiking experiments, Tg-CMIA showed false negatives in TgAb-P, whereas Tg-MS did not. Among 21 TC cases with highly suspicious disease recurrence but Tg-IRMA <1 ng/mL, Tg-MS detected Tg ≥0.5 ng/mL in six samples. However, there was no consistent pattern of recurrence or TgAb trends.</p><p><strong>Conclusion: </strong>Correlations between assays were lower in TgAb-P cases. The spike test results show Tg-MS is less prone to false negatives in TgAb-P cases. Tg-MS may improve Tg detection in TgAb-P cases. However, we could not identify a distinct patient group with shared clinical features that would benefit from Tg-MS.</p>","PeriodicalId":520607,"journal":{"name":"Endocrinology and metabolism (Seoul, Korea)","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144986272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reduced Sphingosine-1-Phosphate Levels Exacerbate Type 2 Diabetes Mellitus and Associated Complications in a High-Fat Diet Mouse Model.","authors":"Shih-Chang Hsu, Ching-Lu Chen, Chung Te Liu, Hung-Chieh Lo, Ying-Kuo Liu, Pei-Song Gao, Shau-Ku Huang, Chin-Wang Hsu","doi":"10.3803/EnM.2025.2360","DOIUrl":"https://doi.org/10.3803/EnM.2025.2360","url":null,"abstract":"<p><strong>Background: </strong>Type 2 diabetes mellitus (T2DM) is increasingly prevalent and frequently associated with obesity, insulin resistance, nonalcoholic fatty liver disease, and chronic kidney disease. Emerging evidence suggests sphingosine-1-phosphate (S1P), a bioactive sphingolipid, plays a significant role in the pathogenesis of T2DM. This study aimed to investigate how reduced S1P levels impact T2DM development.</p><p><strong>Methods: </strong>S1P lyase knock-in (S1PLC317A KI) mice, characterized by reduced S1P levels due to impaired S1P degradation, were compared with wild-type (WT) mice. Both groups were fed a high-fat diet (HFD) to induce T2DM. Parameters including body weight, insulin resistance, blood glucose levels, hepatic fat accumulation, and kidney pathology were evaluated. Next-generation sequencing was employed to identify differentially expressed genes.</p><p><strong>Results: </strong>S1PLC317A KI mice exhibited greater body weight, more pronounced insulin resistance, and higher blood glucose levels compared to WT mice on an HFD. Increased hepatic fat deposition and worsened diabetic kidney disease were also observed in KI mice. Sequencing analysis identified 4,656 differentially expressed genes, notably enriched in mitochondrial and bioenergetic pathways, including 133 diabetes-related genes.</p><p><strong>Conclusion: </strong>Reduced S1P levels exacerbate T2DM symptoms, indicating that therapeutic targeting of S1P pathways may offer promising strategies for treating T2DM and its related complications.</p>","PeriodicalId":520607,"journal":{"name":"Endocrinology and metabolism (Seoul, Korea)","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144786415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}