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Tang H, Xie L, Liu L, Shen Y, Yang P, Wu J, Zhao X, Li Y, Wang Z, Mao Y. Renal fat deposition measured on dixon-based MRI is significantly associated with early kidney damage in obesity. Abdom Radiol (NY) 2024:10.1007/s00261-024-04391-9. [PMID: 38839650 DOI: 10.1007/s00261-024-04391-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/14/2024] [Accepted: 05/15/2024] [Indexed: 06/07/2024]
Abstract
PURPOSE To investigate the renal fat deposition on Dixon-based magnetic resonance imaging (MRI) and to explore the predictive value of renal fat biomarkers of magnetic resonance (MR-RFBs) for early kidney damage in obesity. METHODS This prospective study included 56 obese volunteers and 47 non-obese healthy volunteers. All volunteers underwent renal magnetic resonance examinations. The differences in MR-RFBs [including renal proton density fat fraction (PDFF), renal sinus fat volume (RSFV), and perirenal fat thickness (PRFT)] measured on Dixon-based MRI between the obese and non-obese volunteers were analyzed using a general linear model, taking sex, age, diabetes, and hypertension as covariates. The relationship between estimated glomerular filtration rate (eGFR) and demographic, laboratory, and imaging parameters in obese volunteers was examined by correlation analysis. RESULTS Obese volunteers had higher MR-RFBs than non-obese volunteers after controlling for confounders (all p < 0.001). Renal PDFF (r = - 0.383; p = 0.004), RSFV (r = - 0.368; p = 0.005), and PRFT (r = - 0.451; p < 0.001) were significantly negatively correlated with eGFR in obesity. After adjusting for age, sex, body mass index, diabetes, hypertension, visceral adipose tissue, subcutaneous adipose tissue, renal PDFF, and RSFV, PRFT remained independently negatively associated with eGFR (β = - 0.587; p = 0.003). CONCLUSIONS All MR-RFBs are negatively correlated with eGFR in obesity. The MR-RFBs, especially PRFT, may have predictive value for early kidney damage in obesity.
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Affiliation(s)
- Huali Tang
- Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, China
| | - Lianghua Xie
- Department of Radiology, Affiliated Hospital of Guilin Medical University, No.15 Lequn Road, Guilin Guangxi, China
| | - Liu Liu
- Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, China
| | - Yan Shen
- Chongqing Three Gorges Medical College, Chongqing, China
| | - Ping Yang
- Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, China
| | - Jiamei Wu
- Department of Radiology, Chongqing Dongnan Hospital, No.98 Tongjiang Avenue, Chayuan New District, Nan'an District, Chongqing, China
| | - Xiaofang Zhao
- Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, China
| | - Yi Li
- Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, China
| | - Zhihong Wang
- Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, China
| | - Yun Mao
- Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, China.
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Ordulj I, Tandara M, Jerković K, Šarić F, Beneš M, Lovrić Kojundžić S, Marinović Guić M, Budimir Mršić D. Does the Location of Fat Accumulation Affect the Degree of Aortic and Renal Arterial Calcification? Biomedicines 2024; 12:860. [PMID: 38672214 PMCID: PMC11048273 DOI: 10.3390/biomedicines12040860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 03/31/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
The vascular risk associated with obesity is particularly associated with visceral adiposity, but recent studies suggest that ectopic fat might contribute to the increased risk of atherosclerotic cardiovascular disease. Our study aimed to explore the connection between arterial calcification of the aorta and renal arteries with visceral and ectopic fat deposits, including liver, pancreatic, and renal sinus fat. Retrospective analysis of thoracoabdominal multi-slice computed tomography (MSCT) scans of 302 patients included measurements of calcification volumes of thoracic and abdominal aorta, and of both renal arteries. On the same scans, the visceral fat volume, liver-to-spleen ratio, pancreatic-to-spleen ratio, and both renal sinus fat areas were retrieved. Logistic regression showed the left kidney sinus fat area to be the most strongly associated with calcifications in the aorta and both renal arteries (coef. from 0.578 to 0.913, p < 0.05). The visceral fat positively predicted aortic calcification (coef. = 0.462, p = 0.008), and on the contrary, the pancreatic fat accumulation even showed protective effects on thoracic and abdominal aorta calcification (coef. = -0.611 and -0.761, p < 0.001, respectively). The results suggest that ectopic fat locations differently impact the calcification of arteries, which should be further explored.
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Affiliation(s)
- Ivan Ordulj
- Clinical Department of Diagnostic and Interventional Radiology, University Hospital of Split, Spinčićeva 1, 21000 Split, Croatia; (I.O.); (M.T.); (K.J.); (F.Š.); (S.L.K.); (M.M.G.)
| | - Mirko Tandara
- Clinical Department of Diagnostic and Interventional Radiology, University Hospital of Split, Spinčićeva 1, 21000 Split, Croatia; (I.O.); (M.T.); (K.J.); (F.Š.); (S.L.K.); (M.M.G.)
| | - Kristian Jerković
- Clinical Department of Diagnostic and Interventional Radiology, University Hospital of Split, Spinčićeva 1, 21000 Split, Croatia; (I.O.); (M.T.); (K.J.); (F.Š.); (S.L.K.); (M.M.G.)
| | - Frano Šarić
- Clinical Department of Diagnostic and Interventional Radiology, University Hospital of Split, Spinčićeva 1, 21000 Split, Croatia; (I.O.); (M.T.); (K.J.); (F.Š.); (S.L.K.); (M.M.G.)
| | - Miodrag Beneš
- Institute of Public Health Sveti Rok Virovitica, Podravina County, 33000 Virovitica, Croatia;
| | - Sanja Lovrić Kojundžić
- Clinical Department of Diagnostic and Interventional Radiology, University Hospital of Split, Spinčićeva 1, 21000 Split, Croatia; (I.O.); (M.T.); (K.J.); (F.Š.); (S.L.K.); (M.M.G.)
- School of Medicine, University of Split, Šoltanska 2, 21000 Split, Croatia
- University Department of Health Studies, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia
| | - Maja Marinović Guić
- Clinical Department of Diagnostic and Interventional Radiology, University Hospital of Split, Spinčićeva 1, 21000 Split, Croatia; (I.O.); (M.T.); (K.J.); (F.Š.); (S.L.K.); (M.M.G.)
- School of Medicine, University of Split, Šoltanska 2, 21000 Split, Croatia
- University Department of Health Studies, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia
| | - Danijela Budimir Mršić
- Clinical Department of Diagnostic and Interventional Radiology, University Hospital of Split, Spinčićeva 1, 21000 Split, Croatia; (I.O.); (M.T.); (K.J.); (F.Š.); (S.L.K.); (M.M.G.)
- School of Medicine, University of Split, Šoltanska 2, 21000 Split, Croatia
- University Department of Health Studies, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia
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Bragina A, Rodionova Y, Druzhinina N, Suvorov A, Osadchiy K, Ishina T, Vasilchenko M, Khalenyan M, Dishkaya S, Podzolkov V. Relationship Between Perivascular Adipose Tissue and Cardiovascular Risk Factors: A Systematic Review and Meta-Analysis. Metab Syndr Relat Disord 2024; 22:1-14. [PMID: 37878791 DOI: 10.1089/met.2023.0097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023] Open
Abstract
We conducted a systematic review and meta-analysis aimed at estimating the association between perivascular adipose tissue (PVAT) and some of the cardiovascular risk factors. A systematic search was conducted from January 1980 up to and including 2022 to identify studies that examined the relationship between PVAT and cardiovascular risk factors as obesity and its indices, hypertension, lipids, and glucose intolerance/diabetes. The Medline and Embase databases were searched using the PubMed and Scopus. Data were extracted from 23 studies that fit the criteria. To conduct meta-analysis, we used an approximation of equating the method of correlating assessment because different authors used either Pearson or Spearman correlation. Interrelations of PVAT and body mass index were analyzed in eight studies. Most studies revealed reliable direct correlation; the results of the meta-analysis also showed a significant (P = 0.37, P < 0.01, n = 12,346) correlation. PVAT and waist circumference were analyzed in six studies. Meta-analysis on the selected sample (n = 10,947) showed a significant (r = 0.45, P < 0.01) correlation. Relationship between PVAT and hypertension was revealed in three studies. Direct correlations were found in all studies. Meta-analysis showed the reliability of the correlation dependence (r = 0.21, P < 0.01, n = 3996). PVAT and blood glucose was evaluated in three studies (n = 3689). In each study a reliable (P < 0.05) direct correlation was obtained. Meta-analysis showed a significant correlation of weak strength (r = 0.24, P < 0.01). We demonstrated significant positive correlations of PVAT with the levels of total cholesterol (r = 0.05, P < 0.01), low-density lipoprotein cholesterol (r = 0.13, P < 0.01), and triglycerides (r = 0.29, P < 0.01), and a negative relationship with high-density lipoprotein cholesterol (r = -0.18, P < 0.01) in this meta-analysis. Despite some limitations, the findings of this systematic review and meta-analysis confirmed that PVAT significantly correlates with studied cardiovascular risk factors. Because PVAT presents a great interest in terms of cardiovascular remodeling and cardiovascular disease, its assessment in patients with and without cardiovascular pathology needs further research.
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Affiliation(s)
- Anna Bragina
- Department of Faculty Therapy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
- World-Class Research Center "Digital biodesign and personalized healthcare," I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Yulia Rodionova
- Department of Faculty Therapy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
- World-Class Research Center "Digital biodesign and personalized healthcare," I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Natalia Druzhinina
- Department of Faculty Therapy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
- World-Class Research Center "Digital biodesign and personalized healthcare," I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Alexandr Suvorov
- World-Class Research Center "Digital biodesign and personalized healthcare," I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Konstantin Osadchiy
- Department of Faculty Therapy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Tatiana Ishina
- Department of Faculty Therapy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Maria Vasilchenko
- Department of Faculty Therapy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Milena Khalenyan
- Department of Faculty Therapy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Selen Dishkaya
- Department of Faculty Therapy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Valeriy Podzolkov
- Department of Faculty Therapy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
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Lu F, Fan J, Li F, Liu L, Chen Z, Tian Z, Zuo L, Yu D. Abdominal adipose tissue and type 2 diabetic kidney disease: adipose radiology assessment, impact, and mechanisms. Abdom Radiol (NY) 2024; 49:560-574. [PMID: 37847262 DOI: 10.1007/s00261-023-04062-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/09/2023] [Accepted: 09/11/2023] [Indexed: 10/18/2023]
Abstract
Diabetic kidney disease (DKD) is a significant healthcare burden worldwide that substantially increases the risk of kidney failure and cardiovascular events. To reduce the prevalence of DKD, extensive research is being conducted to determine the risk factors and consequently implement early interventions. Patients with type 2 diabetes mellitus (T2DM) are more likely to be obese. Abdominal adiposity is associated with a greater risk of kidney damage than general obesity. Abdominal adipose tissue can be divided into different fat depots according to the location and function, including visceral adipose tissue (VAT), subcutaneous adipose tissue (SAT), perirenal adipose tissue (PAT), and renal sinus adipose tissue (RSAT), which can be accurately measured by radiology techniques, such as computed tomography (CT) and magnetic resonance imaging (MRI). Abdominal fat depots may affect the development of DKD through different mechanisms, and radiologic abdominal adipose characteristics may serve as imaging indicators of DKD risk. This review will first describe the CT/MRI-based assessment of abdominal adipose depots and subsequently describe the current studies on abdominal adipose tissue and DKD development, as well as the underlying mechanisms in patients of T2DM with DKD.
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Affiliation(s)
- Fei Lu
- School of Medical Imaging, Weifang Medical University, Weifang, 261053, Shandong, China
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Jinlei Fan
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Fangxuan Li
- Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Lijing Liu
- Department of Imaging, Yantaishan Hospital, Yantai, 264001, Shandong, China
| | - Zhiyu Chen
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Ziyu Tian
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Liping Zuo
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Dexin Yu
- School of Medical Imaging, Weifang Medical University, Weifang, 261053, Shandong, China.
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China.
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Oh E, Cho NJ, Kang H, Kim SH, Park HK, Kwon SH. Computed tomography evaluation of skeletal muscle quality and quantity in people with morbid obesity with and without metabolic abnormality. PLoS One 2023; 18:e0296073. [PMID: 38134035 PMCID: PMC10745145 DOI: 10.1371/journal.pone.0296073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
We investigated the differences in quantity and quality of skeletal muscle between metabolically healthy obese (MHO) and metabolically unhealthy obese (MUO) individuals using abdominal CT. One hundred and seventy-two people with morbid obesity who underwent bariatric surgery and 64 healthy control individuals participated in this retrospective study. We divided the people with morbid obesity into an MHO and MUO group. In addition, nonobese metabolic healthy people were included analysis to provide reference levels. CT evaluation of muscle quantity (at the level of the third lumbar vertebra [L3]) was performed by calculating muscle anatomical cross-sectional area (CSA), which was normalized to patient height to produce skeletal muscle index (SMI). Muscle quality was assessed as skeletal muscle density (SMD), which was calculated from CT muscle attenuation. To characterize intramuscular composition, muscle attenuation was classified into three categories using Hounsfield unit (HU) thresholds: -190 HU to -30 HU for intermuscular adipose tissue (IMAT), -29 to +29 HU for low attenuation muscle (LAM), and +30 to +150 HU for normal attenuation muscle (NAM). People with morbid obesity comprised 24 (14%) MHO individuals and 148 (86%) MUO individuals. The mean age of the participants was 39.7 ± 12.5 years, and 154 (65%) participants were women. MUO individuals had a significantly greater total skeletal muscle CSA than MHO individuals in the model that adjusted for all variables. Total skeletal muscle SMI, SMD, NAM index, LAM index, and IMAT index did not differ between MHO and MUO individuals for all adjusted models. Total skeletal muscle at the L3 level was not different in muscle quantity, quality, or intramuscular composition between the MHO and MUO individuals, based on CT evaluation. MHO individuals who are considered "healthy" should be carefully monitored and can have a similar risk of metabolic complications as MUO individuals, at least based on an assessment of skeletal muscle.
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Affiliation(s)
- Eunsun Oh
- Department of Radiology, Soonchunhyang University Seoul Hospital, Seoul, Korea
| | - Nam-Jun Cho
- Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Heemin Kang
- Department of Radiology, Soonchunhyang University Seoul Hospital, Seoul, Korea
| | - Sang Hyun Kim
- Department of General Surgery, Soonchunhyang University Seoul Hospital, Seoul, Korea
| | - Hyeong Kyu Park
- Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul, Korea
| | - Soon Hyo Kwon
- Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul, Korea
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Ogon I, Takashima H, Morita T, Fukushi R, Takebayashi T, Teramoto A. Association of central sensitization, visceral fat, and surgical outcomes in lumbar spinal stenosis. J Orthop Surg Res 2023; 18:886. [PMID: 37990264 PMCID: PMC10662108 DOI: 10.1186/s13018-023-04376-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 11/15/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND Controversy remains regarding predictors of surgical outcomes for patients with lumbar spinal stenosis (LSS). Pain sensitization may be an underlying mechanism contributing to LSS surgical outcomes. Further, obesity is associated with dissatisfaction and poorer outcomes after surgery for LSS. Therefore, this study aimed to examine the relationship between central sensitization (CS), visceral fat, and surgical outcomes in LSS. METHODS Patients with LSS were categorized based on their central sensitization inventory (CSI) scores into low- (CSI < 40) and high- (CSI ≥ 40) CSI subgroups. The participants completed clinical outcome assessments preoperatively and 12 months postoperatively. RESULTS Overall, 60 patients were enrolled in the study (28 men, 32 women; mean age: 62.1 ± 2.8 years). The high-CSI group had significantly higher mean low back pain (LBP), leg pain, and leg numbness visual analogue scale (VAS) scores than the low-CSI group (p < 0.01). The high-CSI group had a significantly higher mean visceral fat area than the low-CSI group (p < 0.01). Postoperatively, LBP VAS score was significantly worse in the high-CSI group. Relative to preoperatively, postoperative leg pain and leg numbness improved significantly in both groups. CONCLUSIONS We believe that neuro decompression can be effective for LSS surgical outcomes in patients with CS; nonetheless, it should be approached with caution owing to the potential for worsening LBP. Additionally, visceral fat is an important indicator suggesting the involvement of CS.
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Affiliation(s)
- Izaya Ogon
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, 291, South-1, West-16, Chuo-ku, Sapporo, 060-8543, Japan.
| | - Hiroyuki Takashima
- Faculty of Health Sciences, Hokkaido University, North-12, West-5, Kitaku, Sapporo, 060-0812, Japan
| | - Tomonori Morita
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, 291, South-1, West-16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Ryunosuke Fukushi
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, 291, South-1, West-16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Tsuneo Takebayashi
- Department of Orthopaedic Surgery, Sapporo Maruyama Orthopaedic Hospital, 1-3, North-7, West-27, Chuo-ku, Sapporo, 060-0007, Japan
| | - Atsushi Teramoto
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, 291, South-1, West-16, Chuo-ku, Sapporo, 060-8543, Japan
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Zhang QH, Chen LH, An Q, Pi P, Dong YF, Zhao Y, Wang N, Fang X, Pu RW, Song QW, Lin LJ, Liu JH, Liu AL. Quantification of the renal sinus fat and exploration of its relationship with ectopic fat deposition in normal subjects using MRI fat fraction mapping. Front Endocrinol (Lausanne) 2023; 14:1187781. [PMID: 37621645 PMCID: PMC10446762 DOI: 10.3389/fendo.2023.1187781] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/29/2023] [Indexed: 08/26/2023] Open
Abstract
Purpose To determine the renal sinus fat (RSF) volume and fat fraction (FF) in normal Chinese subjects using MRI fat fraction mapping and to explore their associations with age, gender, body mass index (BMI) and ectopic fat deposition. Methods A total of 126 subjects were included in the analysis. RSF volume and FF, visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) area, and hepatic and pancreatic FFs were measured for each subject. The comparisons in gender were determined using two-tailed t-tests or the nonparametric Mann-Whitney U-test for normally or non-normally distributed data for continuous variables and the chi-square test for categorical variables. Comparisons of RFS volume and FF between right and left kidneys were determined using paired sample t-tests. Multivariable logistic models were performed to confirm whether RSF differences between men and women are independent of VAT or SAT area. When parameters were normally distributed, the Pearson correlation coefficient was used; otherwise, the Spearman correlation coefficient was applied. Results The RSF volumes (cm3) of both kidneys in men (26.86 ± 8.81 for right and 31.62 ± 10.32 for left kidneys) were significantly bigger than those of women (21.47 ± 6.90 for right and 26.03 ± 8.55 for left kidneys) (P < 0.05). The RSF FFs (%) of both kidneys in men (28.33 ± 6.73 for right and 31.21 ± 6.29 for left kidneys) were significantly higher than those of the women (23.82 ± 7.74 for right and 27.92 ± 8.15 for left kidneys) (P < 0.05). The RSF differences between men and women are independent of SAT area and dependent of VAT area (except for right RSF volume). In addition, the RSF volumes and FFs in both kidneys in the overall subjects show significant correlations with age, BMI, VAT area, hepatic fat fraction and pancreatic fat fraction (P < 0.05). However, the patterns of these correlations varied by gender. The RSF volume and FF of left kidney were significantly larger than those of the right kidney (P < 0.05). Conclusion The association between renal sinus fat and ectopic fat deposition explored in this study may help establish a consensus on the normal values of RSF volume and FF for the Chinese population. This will facilitate the identification of clinicopathological changes and aid in the investigation of whether RSF volume and FF can serve as early biomarkers for metabolic diseases and renal dysfunction in future studies.
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Affiliation(s)
- Qin-He Zhang
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Li-Hua Chen
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Qi An
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Peng Pi
- Department of Medical Imaging, Dalian Medical University, Dalian, China
| | - Yi-Fan Dong
- Department of Medical Imaging, Dalian Medical University, Dalian, China
| | - Ying Zhao
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Nan Wang
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xin Fang
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Ren-Wang Pu
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Qing-Wei Song
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Liang-Jie Lin
- Clinical & Technical Solutions, Philips Healthcare, Beijing, China
| | - Jing-Hong Liu
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Ai-Lian Liu
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
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Lee EJ, Song N, Chung ES, Heo E, Lee H, Kim H, Jeon JS, Noh H, Kim SH, Kwon SH. Changes in abdominal fat depots after bariatric surgery are associated with improved metabolic profile. Nutr Metab Cardiovasc Dis 2023; 33:424-433. [PMID: 36642613 DOI: 10.1016/j.numecd.2022.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 12/20/2022] [Accepted: 12/20/2022] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND AIMS Obesity associated with a change in the quantity and quality of fat depots. Using computed tomography (CT), we analyzed abdominal fat depots in patients with obesity after bariatric surgery according to their metabolic health status. METHODS AND RESULTS We recruited 79 individuals with metabolically unhealthy obesity before bariatric surgery and compared them with age-sex matched healthy controls. The volume and fat attenuation index (FAI) of fat depots were measured using CT scans that were conducted prior to and a year after bariatric surgery. 'Metabolically healthy' was defined as having no hypertension, normal fasting glucose and a waist-to-hip ratio of <1.05 for men and <0.95 for women. Individuals who achieved a metabolic health status conversion (MHC) (n = 29, 37%)-from unhealthy to healthy-were younger (p < 0.001) as compared to individuals without MHC. Pre-surgery BMI and reduction of BMI did not differ between the two groups (p = 0.099, p = 0.5730). Bariatric surgery reduced the volume and increased the FAI of fat depots. Baseline lower abdominal periaortic adipose tissue (AT) volume (p = 0.014) and great percent reduction in renal sinus AT volume after surgery (p = 0.019) were associated with MHC after surgery. Increased intraperitoneal AT FAI (p = 0.031) was also associated with MHC. CONCLUSION MHC was not associated with improvement in general obesity, based on indicators such as reduction of BMI after surgery. Weight reduction induced specific abdominal fat depot changes measured by CT are positively associated with MHC.
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Affiliation(s)
- Eun Ji Lee
- Department of Radiology, Soonchunhyang University Seoul Hospital, South Korea
| | - Nayoung Song
- Division of Nephrology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, South Korea
| | - Eui Seok Chung
- Division of Nephrology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, South Korea
| | - Eun Heo
- Department of Pharmaceutical Engineering, Soonchunhyang University, South Korea
| | - Haekyung Lee
- Division of Nephrology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, South Korea
| | - Hyungnae Kim
- Division of Nephrology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, South Korea
| | - Jin Seok Jeon
- Division of Nephrology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, South Korea
| | - Hyunjin Noh
- Division of Nephrology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, South Korea
| | - Sang Hyun Kim
- Department of Surgery, Soonchunhyang University Seoul Hospital, South Korea
| | - Soon Hyo Kwon
- Division of Nephrology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, South Korea.
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Ogon I, Teramoto A, Takashima H, Terashima Y, Yoshimoto M, Emori M, Iba K, Takebayashi T, Yamashita T. Associations between visceral fat chronic low back pain and central sensitization in patients with lumbar spinal stenosis. J Back Musculoskelet Rehabil 2022; 35:1035-1041. [PMID: 35213342 DOI: 10.3233/bmr-210124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Pain sensitization may be one of the mechanisms contributing to chronic low back pain (CLBP). OBJECTIVE To evaluate the association between visceral fat, CLBP, and central sensitization (CS); describe the relationship between low back pain (LBP) intensity and CS; and identify possible correlation between visceral fat and LBP intensity. METHODS Patients with CLBP were divided using their CS inventory (CSI) scores into low- (CSI < 40) and high-CSI (CSI ⩾ 40) subgroups. We compared computed tomography (CT) measurements and scores for association with pain according to the visual analogue scale (VAS) between the two groups. RESULTS The low-CSI and the high-CSI groups had 47 patients (67.1%; 21 men, 26 women) and 23 patients (32.9%; 11 men and 12 women), respectively. The high-CSI group had a significantly higher mean VAS score (p< 0.01) and estimated mean visceral fat area (p< 0.05) than the low-CSI group. There was a moderate positive correlation between VAS score and visceral fat (standardised partial regression coefficient: 0.659, p< 0.01) in the high-CSI group according to multiple linear regression analysis adjusted for age and sex. CONCLUSIONS Visceral fat is associated with CLBP, regardless of sex or age, and may be a potential therapeutic target for CLBP with CS.
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Affiliation(s)
- Izaya Ogon
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Atsushi Teramoto
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hiroyuki Takashima
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yoshinori Terashima
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Mitsunori Yoshimoto
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Makoto Emori
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kousuke Iba
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tsuneo Takebayashi
- Department of Orthopaedic Surgery, Sapporo Maruyama Orthopaedic Hospital, Sapporo, Japan
| | - Toshihiko Yamashita
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
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Mamopoulos AT, Freyhardt P, Touloumtzidis A, Zapenko A, Katoh M, Gäbel G. Quantification of periaortic adipose tissue in contrast-enhanced CT angiography: technical feasibility and methodological considerations. Int J Cardiovasc Imaging 2022; 38:1621-1633. [PMID: 35218465 PMCID: PMC11142945 DOI: 10.1007/s10554-022-02561-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 02/07/2022] [Indexed: 11/25/2022]
Abstract
To examine the feasibility of the quantification of abdominal periaortic fat tissue (PaFT) (tissue within - 45 to - 195 HU) in enhanced CT-angiographies compared to unenhanced CT-scans and identify methodological issues affecting its clinical implementation. Using OsirixMD, PaFT volume and mean HU value were retrospectively measured within a 5 mm periaortic ring in paired unenhanced and enhanced abdominal aortic CT-scans. The correlation between PaFT values was examined in a derivation cohort (n = 101) and linear regression analysis produced correction factors to convert values from enhanced into values from unenhanced CTs. The conversion factors were then applied to enhanced CTs in a different validation cohort (n = 47) and agreement of corrected enhanced values with values from unenhanced scans was evaluated. Correlation between PaFT Volume und Mean HU from enhanced and unenhanced scans was very high (r > 0.99 and r = 0.95, respectively, p < 0.0001 for both). The correction factors for PaFT Volume and Mean HU were 1.1057 and 1.0011. Potential confounding factors (CT-kilovoltage, slice thickness, mean intraluminal contrast density, aortic wall calcification, longitudinal variation of intraluminal contrast density, aortic diameter) showed no significant effect in a multivariate regression analysis (p > 0.05). Bland-Altman analysis of corrected enhanced and unenhanced values showed excellent agreement and Passing-Bablok regression confirmed minimal/no residual bias. PaFT can be quantified in enhanced CT-angiographies very reliably. PaFT Volume scores are very consistently slightly underestimated in enhanced scans by about 10%, while the PaFT Mean HU value remains practically constant and offers distinct methodological advantages. However, a number of methodological issues remain to be addressed.
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Affiliation(s)
- Apostolos T Mamopoulos
- Faculty of Medicine, Saarland University, Kirrbergerstrasse 100, D-66421, Homburg/Saar, Germany.
- Department of Vascular Surgery, HELIOS Klinikum Krefeld, Lutherplatz 40, 47805, Krefeld, Germany.
| | - Patrick Freyhardt
- Institute for diagnostic and interventional Radiology, HELIOS Klinikum Krefeld, Lutherplatz 40, 47805, Krefeld, Germany
- School of Medicine, Faculty of Health, University Witten/Herdecke, Alfred-Herrhausen-Straße 50, 58455, Witten, Germany
| | | | - Alexander Zapenko
- Department of Vascular Surgery, HELIOS Klinikum Krefeld, Lutherplatz 40, 47805, Krefeld, Germany
| | - Marcus Katoh
- Faculty of Medicine, Saarland University, Kirrbergerstrasse 100, D-66421, Homburg/Saar, Germany
- Institute for diagnostic and interventional Radiology, HELIOS Klinikum Krefeld, Lutherplatz 40, 47805, Krefeld, Germany
| | - Gabor Gäbel
- Department of Vascular Surgery, HELIOS Klinikum Krefeld, Lutherplatz 40, 47805, Krefeld, Germany
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