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Meng Q, Fang Z, Mao X, Tang R, Liang C, Hua J, Wang W, Shi S, Yu X, Xu J. Metabolic reprogramming of cancer-associated fibroblasts in pancreatic cancer contributes to the intratumor heterogeneity of PET-CT. Comput Struct Biotechnol J 2023; 21:2631-2639. [PMID: 37153537 PMCID: PMC10160596 DOI: 10.1016/j.csbj.2023.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/21/2023] [Accepted: 04/06/2023] [Indexed: 05/09/2023] Open
Abstract
Intratumor heterogeneity of positron emission tomography-computed tomography (PET-CT) is reflected by variable 18F-fluorodeoxyglucose (FDG) uptake. Increasing evidence has shown that neoplastic and non-neoplastic components can affect the total 18F-FDG uptake in tumors. Cancer-associated fibroblasts (CAFs) is considered as the main non-neoplastic components in tumor microenvironment (TME) of pancreatic cancer. Our study aims to explore the impact of metabolic changes in CAFs on heterogeneity of PET-CT. A total of 126 patients with pancreatic cancer underwent PET-CT and endoscopic ultrasound elastography (EUS-EG) before treatment. High maximum standardized uptake value (SUVmax) from the PET-CT was positively correlated with the EUS-derived strain ratio (SR) and indicated poor prognosis of patients. In addition, single-cell RNA analysis showed that CAV1 affected glycolytic activity and correlated with glycolytic enzyme expression in fibroblasts in pancreatic cancer. We also observed the negative correlation between CAV1 and glycolytic enzyme expression in the tumor stroma by using immunohistochemistry (IHC) assay in the SUVmax-high and SUVmax-low groups of pancreatic cancer patients. Additionally, CAFs with high glycolytic activity contributed to pancreatic cancer cell migration, and blocking CAF glycolysis reversed this process, suggesting that glycolytic CAFs promote malignant biological behavior in pancreatic cancer. In summary, our research demonstrated that the metabolic reprogramming of CAFs affects total 18F-FDG uptake in tumors. Thus, an increase in glycolytic CAFs with decreased CAV1 expression promotes tumor progression, and high SUVmax may be a marker for therapy targeting the neoplastic stroma. Further studies should clarify the underlying mechanisms.
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Affiliation(s)
- Qingcai Meng
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Zengli Fang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Xiaoqi Mao
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Rong Tang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Chen Liang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Jie Hua
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Wei Wang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Si Shi
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Xianjun Yu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
- Correspondence to: Chief of the Chinese Study Group for Pancreatic Cancer (CSPAC); Chair of the Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center; Director of the Pancreatic Cancer Institute, Fudan University, No. 270 Dong'An Road, Xuhui District, Shanghai 200032, China.
| | - Jin Xu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
- Correspondence to: Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong'An Road, Xuhui District, Shanghai 200032, China.
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Dalby S, Skallerup S, Baun C, Christensen LG, Rathe M, Palner M, Husby S, Moeller JB. PET/CT imaging detects intestinal inflammation in a mouse model of doxorubicin-induced mucositis. Front Oncol 2022; 12:1061804. [PMID: 36591502 PMCID: PMC9798215 DOI: 10.3389/fonc.2022.1061804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 12/01/2022] [Indexed: 12/23/2022] Open
Abstract
Introduction A severe side effect of cancer chemotherapy is the development of gastrointestinal mucositis, characterised by mucosal inflammation. We investigated if 2-deoxy-2-[18F] fluoro-D-glucose positron emission tomography combined with computed tomography (2-[18F]FDG-PET/CT) could visualise gastrointestinal mucositis in mice treated with the chemotherapeutic agent doxorubicin. Methods In this study, gastrointestinal inflammation was longitudinally evaluated by 2-[18F]FDG-PET/CT scans before and 1, 3, 6, and 10 days after treatment with doxorubicin. Doxorubicin-treated mice were compared to saline-treated littermates using the abdominal standard uptake value of 2-[18F]FDG corrected for body weight (SUVBW). Results Abdominal SUVBW was significantly increased on day 1 (p < 0.0001), day 3 (p < 0.0001), and day 6 (p < 0.05) in the doxorubicin-treated group compared to controls. Abdominal SUVBW returned to baseline levels on day 10. In the doxorubicin group, the largest weight loss was observed on day 3 (control vs doxorubicin, mean percent of baseline weight: (98.5 ± 3.2% vs 87.9 ± 4.6%, p < 0.0001). Moreover, in the doxorubicin-treated group, villus lengths were decreased by 23-28% on days 1 and 3 in the small intestine (p < 0.05), and jejunal levels of tumour necrosis factor and interleukin-1β were significantly increased on day 3 (p < 0.05). Discussion Together, these findings indicate that sequential 2-[18F]FDG-PET/CT scans can objectively quantify and evaluate the development and resolution of intestinal inflammation over time in a mouse model of doxorubicin-induced mucositis.
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Affiliation(s)
- Sina Dalby
- Hans Christian Andersen Children’s Hospital, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Sofie Skallerup
- Department of Cancer and Inflammation Research, Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Christina Baun
- Department of Nuclear Medicine, Odense University Hospital, Odense, Denmark
| | | | - Mathias Rathe
- Hans Christian Andersen Children’s Hospital, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Mikael Palner
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Nuclear Medicine, Odense University Hospital, Odense, Denmark
| | - Steffen Husby
- Hans Christian Andersen Children’s Hospital, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Jesper Bonnet Moeller
- Department of Cancer and Inflammation Research, Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
- Danish Institute for Advanced Study, University of Southern Denmark, Odense, Denmark
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Ruan D, Wang Y, Fang J, Teng X, Li B. FDG-avid antrum-pylorus ulcer, adjacent lymph node, and abdominal wall nodule mimicking gastric cancer with metastases. Radiol Case Rep 2022; 17:1396-1401. [PMID: 35251424 PMCID: PMC8892020 DOI: 10.1016/j.radcr.2022.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 01/30/2022] [Accepted: 02/02/2022] [Indexed: 11/30/2022] Open
Abstract
Gastric cancer presents with similar clinical symptoms as gastric ulcer, and the morphologic features of gastroscopy overlap considerably. We report a 58-year-old man with the clinical presentation of recurrent gastric discomfort and black stools. A suspected malignant tumor of the gastric antrum-pylorus was observed on gastroscopy. Contrast-enhanced CT showed enhancement of the lesion. PET/CT revealed an FDG-avid lesion at the gastric antrum-pylorus, an intense FDG-uptake perigastric lymph node, and an enlarged nodule with high FDG uptake in the right abdominal wall. Subsequent surgical pathology revealed an inflammatory ulcer of the gastric antrum-pylorus with reactive hyperplastic lymph node, while the lesion in the right abdominal wall was a scar nodule. This case suggests that when multiple FDG-avid lesions accompany an atypical gastric ulcer, it can easily lead to misdiagnosis, and therefore more emphasis should be placed on histopathological analysis.
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Affiliation(s)
- Dan Ruan
- Department of Nuclear Medicine, Xiamen Branch, Zhongshan Hospital, Fudan University, Fujian, 361015, China
| | - Yanhong Wang
- Department of Nuclear Medicine, Xiamen Branch, Zhongshan Hospital, Fudan University, Fujian, 361015, China
| | - Janyao Fang
- Department of Nuclear Medicine, Xiamen Branch, Zhongshan Hospital, Fudan University, Fujian, 361015, China
| | - Xinyu Teng
- Department of Nuclear Medicine, Xiamen Branch, Zhongshan Hospital, Fudan University, Fujian, 361015, China
| | - Beilei Li
- Department of Nuclear Medicine, Xiamen Branch, Zhongshan Hospital, Fudan University, Fujian, 361015, China.,Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, Shanghai, 20032, China.,Nuclear Medicine Institute of Fudan University, Shanghai, 200032, China.,Shanghai Institute of Medical Imaging, Shanghai, China
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4
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Zhang J, Li Z, Zhang L, Dong A, Zhu Y. FDG PET/CT in Cryptogenic Multifocal Ulcerating Stenosing Enteropathy. Clin Nucl Med 2022; 47:281-282. [PMID: 34653049 DOI: 10.1097/rlu.0000000000003931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
ABSTRACT Cryptogenic multifocal ulcerating stenosing enteropathy (CMUSE) is a rare and exclusive small intestine disease, characterized by repeated anemia or obstruction resulting from multiple shallow ulcers with strictures in the small intestine. We present a case of CMUSE showing multiple foci of activity in the small bowel on FDG PET/CT. This case indicates that CMUSE should be included in the differential diagnosis of multifocal FDG activity in the small bowel along with lymphoma, carcinoma, tuberculosis, Crohn disease, Behçet disease, and drug-induced enteropathy.
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Affiliation(s)
- Jian Zhang
- From the Shanghai University, Shanghai Universal Medical Imaging Diagnostic Center
| | - Zhi Li
- School of Medicine, Shanghai University
| | - Ling Zhang
- Department of Gastroenterology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University
| | - Aisheng Dong
- Departments of Nuclear Medicine, Changhai Hospital, Navy Medical University, Shanghai, China
| | - Yuzhao Zhu
- From the Shanghai University, Shanghai Universal Medical Imaging Diagnostic Center
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5
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Sugita S, Yamato M, Hatabu T, Kataoka Y. Involvement of cancer-derived EMT cells in the accumulation of 18F-fluorodeoxyglucose in the hypoxic cancer microenvironment. Sci Rep 2021; 11:9668. [PMID: 33994540 PMCID: PMC8126561 DOI: 10.1038/s41598-021-88414-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 04/06/2021] [Indexed: 12/13/2022] Open
Abstract
A high rate of glycolysis, one of the most common features of cancer, is used in positron emission tomography (PET) imaging to visualize tumor tissues using 18F-fluorodeoxyglucose (18F-FDG). Heterogeneous intratumoral distribution of 18F-FDG in tissues has been established in some types of cancer, and the maximum standardized uptake value (SUVmax) has been correlated with poor prognosis. However, the phenotype of cells that show high 18F-FDG accumulation in tumors remains unknown. Here, we combined quantitative micro-autoradiography with fluorescence immunohistochemistry to simultaneously visualize 18F-FDG distribution, the expression of multiple proteins, and hypoxic regions in the cancer microenvironment of a human A431 xenograft tumor in C.B-17/Icr-scid/scid mice. We found that the highest 18F-FDG accumulation was in cancer-derived cells undergoing epithelial-mesenchymal transition (EMT) in hypoxic regions, implicating these regions as a major contributor to increased glucose metabolism, as measured by 18F-FDG-PET.
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Affiliation(s)
- Sachi Sugita
- Laboratory of Animal Physiology, Graduate School of Environmental and Life Science, Okayama University, Okayama, Okayama, 700-8530, Japan.,Laboratory for Cellular Function Imaging, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan
| | - Masanori Yamato
- Laboratory for Cellular Function Imaging, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan.,Multi-Modal Microstructure Analysis Unit, RIKEN-JEOL Collaboration Center, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan
| | - Toshimitsu Hatabu
- Laboratory of Animal Physiology, Graduate School of Environmental and Life Science, Okayama University, Okayama, Okayama, 700-8530, Japan
| | - Yosky Kataoka
- Laboratory for Cellular Function Imaging, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan. .,Multi-Modal Microstructure Analysis Unit, RIKEN-JEOL Collaboration Center, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan.
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6
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Ji X, Dong H, Dong A. Ileal Ulcer Associated With a Large Bezoar Mimicking Malignancy on FDG PET/CT. Clin Nucl Med 2021; 46:93-94. [PMID: 33181734 DOI: 10.1097/rlu.0000000000003364] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A 34-year-old woman presented with abdominal pain for 2 months. Abdominal CT revealed a large bezoar in the distal ileum with surrounding thickened ileal wall and enlarged mesentery lymph nodes. On FDG PET/CT, the thickened ileal wall and enlarged mesentery lymph nodes showed increased FDG uptake. Ileal malignancy with mesentery lymph node metastasis was suspected. The distal ileum and enlarged mesentery lymph nodes were removed. Benign ileal ulcer and mesentery reactive lymphoid hyperplasia were confirmed by histopathology.
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Affiliation(s)
- Xia Ji
- From the Department of Gastroenterology, The Second Affiliated Hospital, Jiaxing University, Jiaxing
| | - Hui Dong
- Department of Pathology, Eastern Hepatobiliary Surgery Hospital
| | - Aisheng Dong
- Department of Nuclear Medicine, Changhai Hospital, Navy Military Medical University, Shanghai, China
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7
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Shangguan C, Gan G, Zhang J, Wu J, Miao Y, Zhang M, Li B, Mi J. Cancer-associated fibroblasts enhance tumor 18F-FDG uptake and contribute to the intratumor heterogeneity of PET-CT. Theranostics 2018; 8:1376-1388. [PMID: 29507627 PMCID: PMC5835943 DOI: 10.7150/thno.22717] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 12/05/2017] [Indexed: 12/14/2022] Open
Abstract
Purpose: Elevated glucose uptake is a hallmark of cancer. Fluorodeoxyglucose (FDG) uptake was believed to indicate the aggressiveness of tumors and the standardized uptake value (SUV) is a well-known measurement for FDG uptake in positron emission tomography-computed tomography (PET/CT). However, the SUV is variable due to the heterogeneity of tumors. Methods: 126 patients with colorectal cancer underwent 18F-FDG PET/CT scanning before surgery between Jan 2011 and April 2016. Cancer-associated fibroblast (CAF) densities were calculated with the inForm Advanced image analysis software and were comparatively analyzed between patients with high and low maximum SUV (SUVmax-high and SUVmax-low). Glucose uptake was evaluated in induced and isolated CAFs and CAF-cocultured colon cancer HCT116 cells. Moreover, micro-PET/CT was performed on xenografted tumors and autoradiography was performed in the AOM/DSS induced colon cancer model. Results: CAFs were glycolytic, evidenced by glucose uptake and upregulated HK2 expression. Compared to non-activated fibroblasts (NAFs), CAFs were more dependent on glucose and sensitive to a glycolysis inhibitor. CAFs increased the SUVmax in xenograft tumors and spontaneous colon cancers. Moreover, multivariate analysis revealed that the SUVmax was only associated with tumor size among conventional parameters in colon cancer patients (126 cases, p = 0.009). Besides tumor size, the CAF density was the critical factor associated with SUVmax and outcome, which was 2.27 ± 0.74 and 1.68 ± 0.45 in the SUVmax-high and the SUVmax-low groups, respectively (p = 0.014). Conclusion: CAFs promote tumor progression and increase SUVmax of 18F-FDG, suggesting CAFs lead to the intratumor heterogeneity of the SUV and the SUVmax is a prognostic marker for cancer patients.
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Development of Diagnostic Techniques for Early Rheumatoid Arthritis Using Positron Emission Tomography with [11C]PK11195 and [11C]Ketoprofen Tracers. Mol Imaging Biol 2017; 19:746-753. [DOI: 10.1007/s11307-016-1039-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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[ 18F]FDG Uptake in the Aortic Wall Smooth Muscle of Atherosclerotic Plaques in the Simian Atherosclerosis Model. BIOMED RESEARCH INTERNATIONAL 2016; 2016:8609274. [PMID: 28101514 PMCID: PMC5215192 DOI: 10.1155/2016/8609274] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 11/02/2016] [Accepted: 11/28/2016] [Indexed: 12/17/2022]
Abstract
Atherosclerosis is a self-sustaining inflammatory fibroproliferative disease that progresses in discrete stages and involves a number of cell types and effector molecules. Recently, [18F]fluoro-2-deoxy-D-glucose- ([18F]FDG-) positron emission tomography (PET) has been suggested as a tool to evaluate atherosclerotic plaques by detecting accumulated macrophages associated with inflammation progress. However, at the cellular level, it remains unknown whether only macrophages exhibit high uptake of [18F]FDG. To identify the cellular origin of [18F]FDG uptake in atherosclerotic plaques, we developed a simian atherosclerosis model and performed PET and ex vivo macro- and micro-autoradiography (ARG). Increased [18F]FDG uptake in the aortic wall was observed in high-cholesterol diet-treated monkeys and WHHL rabbits. Macro-ARG of [18F]FDG in aortic sections showed that [18F]FDG was accumulated in the media and intima in the simian model as similar to that in WHHL rabbits. Combined analysis of micro-ARG with immunohistochemistry in the simian atherosclerosis model revealed that most cellular [18F]FDG uptake observed in the media was derived not only from the infiltrated macrophages in atherosclerotic plaques but also from the smooth muscle cells (SMCs) of the aortic wall in atherosclerotic lesions.
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10
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Hayasaka D, Nishi K, Fuchigami T, Shiogama K, Onouchi T, Shimada S, Tsutsumi Y, Morita K. 18F-FDG PET imaging for identifying the dynamics of intestinal disease caused by SFTSV infection in a mouse model. Oncotarget 2016; 7:140-7. [PMID: 26700962 PMCID: PMC4807988 DOI: 10.18632/oncotarget.6645] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 12/05/2015] [Indexed: 11/25/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging disease that causes fever, enteritis, thrombocytopenia, and leucopenia and can be fatal in up to 30% of cases. However, the mechanism of severe disease is not fully understood. Molecular imaging approaches, such as positron-emission tomography (PET), are functional in vivo imaging techniques that provide real-time dynamics of disease progression, assessments of pharmacokinetics, and diagnoses for disease progression. Molecular imaging also potentially provides useful approaches to explore the pathogenesis of viral infections. Thus, the purpose of this study was to image the pathological features of SFTSV infection in vivo by PET imaging. In a mouse model, we showed that 18F-FDG accumulations clearly identified the intestinal tract site as a pathological site. We also demonstrated that 18F-FDG PET imaging can assess disease progression and response to antiserum therapy within the same individual. This is the first report demonstrating a molecular imaging strategy for SFTSV infection. Our results provide potentially useful information for preclinical studies such as the elucidation of the mechanism of SFTSV infection in vivo and the assessment of drugs for SFTS treatment.
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Affiliation(s)
- Daisuke Hayasaka
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Sakamoto, Nagasaki, Japan.,Leading Graduate School Program, Nagasaki University, Sakamoto, Nagasaki, Japan
| | - Kodai Nishi
- Department of Radioisotope Medicine, Atomic Bomb Diseases Institute, Nagasaki University, Sakamoto, Nagasaki, Japan
| | - Takeshi Fuchigami
- Department of Hygienic Chemistry, Graduate School of Biomedical Sciences, Nagasaki University, Bunkyo-machi, Nagasaki, Japan
| | - Kazuya Shiogama
- Department of Pathology, Fujita Health University School of Medicine, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, Japan
| | - Takanori Onouchi
- Department of Pathology, Fujita Health University School of Medicine, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, Japan
| | - Satoshi Shimada
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Sakamoto, Nagasaki, Japan.,Leading Graduate School Program, Nagasaki University, Sakamoto, Nagasaki, Japan
| | - Yutaka Tsutsumi
- Department of Pathology, Fujita Health University School of Medicine, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, Japan
| | - Kouichi Morita
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Sakamoto, Nagasaki, Japan.,Leading Graduate School Program, Nagasaki University, Sakamoto, Nagasaki, Japan
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11
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Role of 18F-fluorodeoxyglucose Positron Emission Tomography in the Monitoring of Inflammatory Activity in Crohn's Disease. Inflamm Bowel Dis 2016; 22:2619-2629. [PMID: 27753695 DOI: 10.1097/mib.0000000000000924] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Fluorine-fluorodeoxyglucose positron emission tomography (F-FDG PET) has recently attracted interest for the measurement of disease activity in Crohn's disease (CD). The aim of this study was to assess the utility of FDG-PET as a marker of progression of inflammatory activity and its response to treatment in patients with CD. METHODS Twenty-two patients with active CD were recruited prospectively to undergo FDG-PET scanning at 2 time points. All 22 index scans were used to assess sensitivity and specificity against a reference standard magnetic resonance imaging measure. Correlations with clinicopathological markers of severity (Harvey-Bradshaw Index, C-reactive protein, and calprotectin) were also performed. Of note, 17/22 patients participated in the longitudinal component and underwent scanning before and 12 weeks after the initiation of anti-tumor necrosis factor alpha therapy. Patients were subcategorized on the basis of a clinically significant response, and responsiveness of the PET measures was assessed using previously described indices. Of note, 5/22 patients took part in the test-retest component of the study and underwent scanning twice within a target interval of 1 week, to assess the reproducibility of the PET measures. RESULTS The sensitivity and specificity of F-FDG PET were 88% and 70%, respectively. Standardized uptake value (SUV)-related PET measures correlated significantly both with C-reactive protein and Harvey-Bradshaw Index in cross-sectional and longitudinal analyses. (G)SUVMAX and (G)SUVMEAN demonstrated favorable responsiveness and reliability characteristics (responsiveness ratio of Guyatt >0.80 and % variability <20%) compared with volume-dependent FDG-PET measures. A proportion of the FDG signal (10%-30%) was found to originate from the lumen of diseased segments. CONCLUSIONS F-FDG PET may be useful for longitudinal monitoring of inflammatory activity in CD.
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Enzymatic synthesis of 2-deoxyglucose-containing maltooligosaccharides for tracing the location of glucose absorption from starch digestion. Carbohydr Polym 2015; 132:41-9. [DOI: 10.1016/j.carbpol.2015.06.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 06/02/2015] [Accepted: 06/04/2015] [Indexed: 12/27/2022]
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13
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Sugaya T, Sakamoto S, Tominaga K, Nakano M, Sugaya H, Hiraishi H. Feasibility of detecting small intestinal disease by FDG-PET/CT. ACTA ACUST UNITED AC 2015; 40:2193-9. [PMID: 26070746 DOI: 10.1007/s00261-015-0457-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Positron emission tomography (PET)/computed tomography with (18)F-fluorodeoxyglucose (FDG) is widely used for the diagnosis of malignant tumors. However, we occasionally encounter cases in which pathological accumulation is indistinguishable from physiological accumulation. We conducted a retrospective study of the maximum standardized uptake value (SUVmax) and the distribution pattern of FDG accumulation in 80 evaluable patients with records of accumulation in the small intestine identified from data acquired at Dokkyo Medical University PET Center from March 2005 to December 2010. Our aim was to distinguish pathological accumulation from physiological accumulation. Nineteen of the 80 patients had lesions that required some form of treatment. These lesions were categorized as pathological accumulation, while other 65 lesions in 61 patients were categorized as physiological accumulation. Cases with diffuse accumulation in the intestinal tract were assigned to Group L (linear), all others to Group F (focal), in our analysis. Lesions were focal in 22 patients and linear in 62. The pathological accumulation group had a mean SUVmax of 12.2, which was higher than that of 5.0 in the physiological accumulation group, and included more lesions that were categorized into Group F (16 of 19 lesions). The sensitivity and specificity for detecting focal accumulation regarded as being pathological accumulation were 84% and 91%, respectively, and accuracy was 89%. The sensitivity and specificity with a cut-off SUVmax of 5.87 obtained in the ROC analysis were 84% and 78%, respectively, and accuracy was 80%. Evaluation of SUVmax in the small intestine and the distribution pattern of FDG accumulation may be useful for diagnosing lesions in the small intestine.
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Affiliation(s)
- Takeshi Sugaya
- Department of Gastroenterology, Dokkyo Medical University, 880, Kitakobayashi, Mibu, Shimotsuga, Tochigi, 321-0293, Japan.
| | | | - Keiichi Tominaga
- Department of Gastroenterology, Dokkyo Medical University, 880, Kitakobayashi, Mibu, Shimotsuga, Tochigi, 321-0293, Japan
| | - Masakazu Nakano
- Department of Gastroenterology, Dokkyo Medical University, 880, Kitakobayashi, Mibu, Shimotsuga, Tochigi, 321-0293, Japan
| | - Hitoshi Sugaya
- Department of Gastroenterology, Dokkyo Medical University, 880, Kitakobayashi, Mibu, Shimotsuga, Tochigi, 321-0293, Japan
| | - Hideyuki Hiraishi
- Department of Gastroenterology, Dokkyo Medical University, 880, Kitakobayashi, Mibu, Shimotsuga, Tochigi, 321-0293, Japan
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Utility of respiratory-gated small-animal PET/CT in the chronologic evaluation of an orthotopic lung cancer transplantation mouse model. Radiol Phys Technol 2015; 8:266-77. [PMID: 25921487 DOI: 10.1007/s12194-015-0316-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 04/16/2015] [Accepted: 04/20/2015] [Indexed: 01/07/2023]
Abstract
Our aim in this study was to clarify the effects of respiratory-gated PET in the evaluation of lung cancer according to the (18)F-FDG uptake in an orthotopic transplantation mouse model. We created such a model, and we performed PET/CT. The mice were divided into two groups according to tumor volume: a small-tumor group (<20 mm(3)) and a large-tumor group (>20 mm(3)). We reconstructed the following conditions based on list-mode data: non-gated (3D) images and gated (4D) images, divided based on the respiratory cycle (expiration phase, stable phase, and inspiration phase). We calculated the maximum standardized uptake values (SUVmax) in each phase. We used the % difference [= (4D SUVmax - 3D SUVmax)/3D PET SUVmax × 100 (%)] to evaluate the differences in the 4D SUVmax and 3D SUVmax. The 4D SUVmax values were significantly higher than the 3D SUVmax, regardless of the tumor size. The % difference for the small tumors was greater than that for the large tumors, and it was highest in the stable phase. We conclude that the SUVmax in the stable phase under respiratory-gated PET are the most reliable. The SUVmax observed under non-gated PET are considered to be more frequently underestimated in cases involving small tumors than in those involving large tumors. In the chronologic study evaluating the time course of tumor development, the size of the tumor is small in early stage, and respiratory-gated PET is effective in reducing the underestimation of such tumors caused by respiratory motion.
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Nomura S, Nozaki S, Hamazaki T, Takeda T, Ninomiya E, Kudo S, Hayashinaka E, Wada Y, Hiroki T, Fujisawa C, Kodama H, Shintaku H, Watanabe Y. PET imaging analysis with 64Cu in disulfiram treatment for aberrant copper biodistribution in Menkes disease mouse model. J Nucl Med 2014; 55:845-51. [PMID: 24627433 DOI: 10.2967/jnumed.113.131797] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
UNLABELLED Menkes disease (MD), an X-linked recessive disorder of copper metabolism caused by mutations in the copper-transporting ATP7A gene, results in growth failure and severe neurodegeneration in early childhood. Subcutaneous copper-histidine injection is the standard treatment for MD, but it has limited clinical efficacy. Furthermore, long-term copper injection causes excess copper accumulation in the kidneys, resulting in renal dysfunction. To attempt to resolve this issue, we used PET imaging with (64)Cu to investigate the effects of disulfiram on copper biodistribution in living mice serving as an animal model for MD (MD model mice). METHODS Macular mice were used as MD model mice, and C3H/He mice were used as wild-type mice. Mice were pretreated with 2 types of chelators (disulfiram, a lipophilic chelator, and d-penicillamine, a hydrophilic chelator) 30 min before (64)CuCl2 injection. After (64)CuCl2 injection, emission scans covering the whole body were performed for 4 h. After the PET scans, the brain and kidneys were analyzed for radioactivity with γ counting and autoradiography. RESULTS After copper injection alone, marked accumulation of radioactivity ((64)Cu) in the liver was demonstrated in wild-type mice, whereas in MD model mice, copper was preferentially accumulated in the kidneys (25.56 ± 3.01 percentage injected dose per gram [%ID/g]) and was detected to a lesser extent in the liver (13.83 ± 0.26 %ID/g) and brain (0.96 ± 0.08 %ID/g). Copper injection with disulfiram reduced excess copper accumulation in the kidneys (14.54 ± 2.68 %ID/g) and increased copper transport into the liver (29.42 ± 0.98 %ID/g) and brain (5.12 ± 0.95 %ID/g) of MD model mice. Copper injection with d-penicillamine enhanced urinary copper excretion and reduced copper accumulation in most organs in both mouse groups. Autoradiography demonstrated that disulfiram pretreatment induced copper transport into the brain parenchyma and reduced copper accumulation in the renal medulla. CONCLUSION PET studies with (64)Cu revealed that disulfiram had significant effects on the copper biodistribution of MD. Disulfiram increased copper transport into the brain and reduced copper uptake in the kidneys of MD model mice. The application of (64)Cu PET for the treatment of MD and other copper-related disorders may be useful in clinical settings.
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Affiliation(s)
- Shiho Nomura
- Department of Pediatrics, Graduate School of Medicine, Osaka City University, Osaka, Japan
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16
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Betton GR. A review of the toxicology and pathology of the gastrointestinal tract. Cell Biol Toxicol 2013; 29:321-38. [DOI: 10.1007/s10565-013-9257-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 08/14/2013] [Indexed: 02/08/2023]
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17
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Detection of early stage atherosclerotic plaques using PET and CT fusion imaging targeting P-selectin in low density lipoprotein receptor-deficient mice. Biochem Biophys Res Commun 2013; 433:47-51. [PMID: 23485468 DOI: 10.1016/j.bbrc.2013.02.069] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Accepted: 02/15/2013] [Indexed: 11/20/2022]
Abstract
BACKGROUND Sensitive detection and qualitative analysis of atherosclerotic plaques are in high demand in cardiovascular clinical settings. The leukocyte-endothelial interaction mediated by an adhesion molecule P-selectin participates in arterial wall inflammation and atherosclerosis. METHODS AND RESULTS A (64)Cu-1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid conjugated anti-P-selectin monoclonal antibody ((64)Cu-DOTA-anti-P-selectin mAb) probe was prepared by conjugating an anti-P-selectin monoclonal antibody with DOTA followed by (64)Cu labeling. Thirty-six hours prior to PET and CT fusion imaging, 3MBq of (64)Cu-DOTA-anti-P-selectin mAb was intravenously injected into low density lipoprotein receptor-deficient Ldlr-/- mice. After a 180min PET scan, autoradiography and biodistribution of (64)Cu-DOTA-anti-P-selectin monoclonal antibody was examined using excised aortas. In Ldlr-/- mice fed with a high cholesterol diet for promotion of atherosclerotic plaque development, PET and CT fusion imaging revealed selective and prominent accumulation of the probe in the aortic root. Autoradiography of aortas that demonstrated probe uptake into atherosclerotic plaques was confirmed by Oil red O staining for lipid droplets. In Ldlr-/- mice fed with a chow diet to develop mild atherosclerotic plaques, probe accumulation was barely detectable in the aortic root on PET and CT fusion imaging. Probe biodistribution in aortas was 6.6-fold higher in Ldlr-/- mice fed with a high cholesterol diet than in those fed with a normal chow diet. (64)Cu-DOTA-anti-P-selectin mAb accumulated selectively in aortic atherosclerotic plaques and was detectable by PET and CT fusion imaging in Ldlr-/- mice. CONCLUSIONS P-selectin is a candidate target molecule for early-phase detection by PET and CT fusion imaging of atherosclerotic plaques.
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Watanabe Y. Molecular Imaging-based Early-Phase and Exploratory Clinical Research. YAKUGAKU ZASSHI 2013; 133:187-95. [DOI: 10.1248/yakushi.12-00246-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yasuyoshi Watanabe
- RIKEN Center for Molecular Imaging Science
- Department of Physiology, Osaka City University Graduate School of Medicine
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Solon EG, Schweitzer A, Stoeckli M, Prideaux B. Autoradiography, MALDI-MS, and SIMS-MS imaging in pharmaceutical discovery and development. AAPS J 2010; 12:11-26. [PMID: 19921438 PMCID: PMC2811645 DOI: 10.1208/s12248-009-9158-4] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2009] [Accepted: 10/30/2009] [Indexed: 12/26/2022] Open
Abstract
Whole-body autoradiography ((WBA) or quantitative WBA (QWBA)), microautoradiography (MARG), matrix-assisted laser desorption/ionization mass spectrometric imaging (MALDI-MSI), and secondary ion mass spectrometric imaging (SIMS-MSI) are high-resolution, molecular imaging techniques used to study the tissue distribution of radiolabeled and nonlabeled compounds in ex vivo, in situ biological samples. WBA, which is the imaging of the whole-body of lab animals, and/or their organ systems; and MARG, which provides information on the localization of radioactivity in histological preparations and at the cellular level, are used to support drug discovery and development efforts. These studies enable the conduct of human radiolabeled metabolite studies and have provided pharmaceutical scientists with a high resolution and quantitative method of accessing tissue distribution. MALDI-MSI is a mass spectrometric imaging technique capable of label-free and simultaneous determination of the identity and distribution of xenobiotics and their metabolites as well as endogenous substances in biological samples. This makes it an interesting extension to WBA and MARG, eliminating the need for radiochemistry and providing molecular specific information. SIMS-MSI offers a complementary method to MALDI-MSI for the acquisition of images with higher spatial resolution directly from biological specimens. Although traditionally used for the analysis of surface films and polymers, SIMS has been used successfully for the study of biological tissues and cell types, thus enabling the acquisition of images at submicrometer resolution with a minimum of samples preparation.
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