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Joshi K, Espino DM, Shepherd DE, Mahmoodi N, Roberts KJ, Chatzizacharias N, Marudanayagam R, Sutcliffe RP. Pancreatic anastomosis training models: Current status and future directions. Pancreatology 2024; 24:624-629. [PMID: 38580492 DOI: 10.1016/j.pan.2024.03.020] [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: 11/30/2023] [Revised: 02/23/2024] [Accepted: 03/27/2024] [Indexed: 04/07/2024]
Abstract
Postoperative pancreatic fistula (POPF) is a major cause of morbidity and mortality after pancreatoduodenectomy (PD), and previous research has focused on patient-related risk factors and comparisons between anastomotic techniques. However, it is recognized that surgeon experience is an important factor in POPF outcomes, and that there is a significant learning curve for the pancreatic anastomosis. The aim of this study was to review the current literature on training models for the pancreatic anastomosis, and to explore areas for future research. It is concluded that research is needed to understand the mechanical properties of the human pancreas in an effort to develop a synthetic model that closely mimics its mechanical properties. Virtual reality (VR) is an attractive alternative to synthetic models for surgical training, and further work is needed to develop a VR pancreatic anastomosis training module that provides both high fidelity and haptic feedback.
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Affiliation(s)
- Kunal Joshi
- Department of HPB surgery, University Hospitals Birmingham NHS Foundation Trust, University of Birmingham, UK
| | - Daniel M Espino
- Department of Mechanical Engineering, University of Birmingham, UK
| | | | - Nasim Mahmoodi
- Department of Mechanical Engineering, University of Birmingham, UK
| | - Keith J Roberts
- Department of HPB surgery, University Hospitals Birmingham NHS Foundation Trust, University of Birmingham, UK
| | - Nikolaos Chatzizacharias
- Department of HPB surgery, University Hospitals Birmingham NHS Foundation Trust, University of Birmingham, UK
| | - Ravi Marudanayagam
- Department of HPB surgery, University Hospitals Birmingham NHS Foundation Trust, University of Birmingham, UK
| | - Robert P Sutcliffe
- Department of HPB surgery, University Hospitals Birmingham NHS Foundation Trust, University of Birmingham, UK.
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Wang Y, Tian XF, Cheng J, Xu XL, Cao JY, Dong Y, Dietrich CF. Normal value of virtual touch imaging quantification elastography in measurements of pancreas. Clin Hemorheol Microcirc 2024:CH232092. [PMID: 38393894 DOI: 10.3233/ch-232092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2024]
Abstract
OBJECTIVE To evaluate pancreatic tissue stiffness and provide a normal reference shear wave velocity (SWV) value of pancreas from healthy adults by Virtual Touch Imaging Quantification (VTIQ) measurements. METHODS Healthy adult volunteers without known history of hepatobiliary or pancreatic diseases were included. VTIQ elastography (Siemens ACUSON Sequoia, 5C-1 transducer) was used. SWV values were measured at the cephalic, corpus and tail of pancreas and replicated different operators' obtained data. Subgroups were classified according to the volunteers' gender, age, body mass index (BMI), depth of measurements and the echogenicity of the pancreas. RESULTS From February 2023 to July 2023, 33 healthy adult volunteers were included. The success rate of VTIQ measurements in cephalic, corpus and tail regions was 90.90 % (30/33), 96.97 % (32/33) and 90.90 % (30/33) respectively. The color elastograms of healthy adult pancreas showed uniform blue or simultaneously blue and green. The average SWV values were 0.97±0.26 m/s for cephalic, 0.91±0.24 m/s for corpus and 0.97±0.25 m/s for pancreatic tail respectively (P = 0.198). The mean SWV values of pancreas did not show significant difference with age, gender or depth (P > 0.05). BMI was an influence factor in the measurements of SWV values of cephalic and tail of pancreas (P < 0.05). Pancreas with hyperechoic parenchyma showed higher mean SWV values (P < 0.05). The intra-observer (ICC = 0.938 [95% CI: 0.869-0.971]) and the inter-observer (ICC = 0.887 [95% CI: 0.760-0.947]) agreements of VTIQ measurements were excellent. CONCLUSIONS The mean SWV value of the pancreas in healthy adults was 0.96±0.20 m/s (range: 0.52-1.74 m/s). VTIQ technique can be used in pancreatic stiffness measurements with good reliability.
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Affiliation(s)
- Ying Wang
- Department of Ultrasound, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xiao-Fan Tian
- Department of Ultrasound, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Juan Cheng
- Department of Ultrasound, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xin-Liang Xu
- Department of Ultrasound, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jia-Ying Cao
- Department of Ultrasound, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yi Dong
- Department of Ultrasound, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Christoph F Dietrich
- Department Allgemeine Innere Medizin, Kliniken Hirslanden Beau Site, Salem und Permanence, Bern, Switzerland
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Huang J, Peng J, Long H, Ruan S, Yao L, Xie X, Lin M, Zhang X. Feasibility and Measurement Value of Pancreatic 2-D Shear Wave Elastography in Healthy Adults: Evaluation, Influencing Factors, Reference Range, Measurement Stability and Reproducibility. ULTRASOUND IN MEDICINE & BIOLOGY 2024; 50:184-190. [PMID: 37880058 DOI: 10.1016/j.ultrasmedbio.2023.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 09/15/2023] [Accepted: 09/20/2023] [Indexed: 10/27/2023]
Abstract
OBJECTIVE The present study was aimed at assessing the success rate and measurement value, determining the influencing factors and reference range and examining the intra-operator stability and inter-operator reproducibility of pancreatic 2-D shear wave elastography (SWE) measurement in healthy adults. METHODS In 2022, 387 healthy adults were prospectively recruited. Logistic regression and linear regression analyses were used to explore the factors influencing the success rate and the measurement value of pancreatic 2-D SWE measurement, respectively. A two-sided 95% reference range was estimated accordingly. The intraclass correlation coefficient was calculated to evaluate the intra-operator stability and inter-operator reproducibility of the pancreatic 2-D SWE measurement. RESULTS The pancreatic body (89.6%) bore the highest while the tail (72.8%) bore the lowest success rate of pancreatic 2-D SWE measurement. Sex and body mass index (BMI) were the independent factors influencing measurement success rate in all three parts of the pancreas. Mean measurement values (Emean) were not the same in the three parts of the pancreas of the same participant. BMI and image depth were the independent factors influencing Emean in the pancreatic body, while region of interest depth and BMI were the only independent factors influencing Emean in the pancreatic head and tail, respectively. The intra-operator stability of pancreatic 2-D SWE measurement was found to be excellent, whereas its inter-operator reproducibility was poor to good. CONCLUSION Pancreatic 2-D SWE is a reliable technique for evaluating pancreatic stiffness in healthy adults, but its success rate and measurement value are influenced by multiple factors.
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Affiliation(s)
- Jiayao Huang
- Department of Medical Ultrasonics, Sun Yat-sen University First Affiliated Hospital, Guangzhou, Guangdong, China
| | - Jianyun Peng
- Department of Medical Ultrasonics, Sun Yat-sen University First Affiliated Hospital, Guangzhou, Guangdong, China
| | - Haiyi Long
- Department of Medical Ultrasonics, Sun Yat-sen University First Affiliated Hospital, Guangzhou, Guangdong, China
| | - Simin Ruan
- Department of Medical Ultrasonics, Sun Yat-sen University First Affiliated Hospital, Guangzhou, Guangdong, China
| | - Lu Yao
- Department of Medical Ultrasonics, Sun Yat-sen University First Affiliated Hospital, Guangzhou, Guangdong, China
| | - Xiaoyan Xie
- Department of Medical Ultrasonics, Sun Yat-sen University First Affiliated Hospital, Guangzhou, Guangdong, China
| | - Manxia Lin
- Department of Medical Ultrasonics, Sun Yat-sen University First Affiliated Hospital, Guangzhou, Guangdong, China
| | - Xiaoer Zhang
- Department of Medical Ultrasonics, Sun Yat-sen University First Affiliated Hospital, Guangzhou, Guangdong, China.
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Kattner N. Immune cell infiltration in the pancreas of type 1, type 2 and type 3c diabetes. Ther Adv Endocrinol Metab 2023; 14:20420188231185958. [PMID: 37529508 PMCID: PMC10387691 DOI: 10.1177/20420188231185958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 06/16/2023] [Indexed: 08/03/2023] Open
Abstract
The different types of diabetes differ in disease pathogenesis but share the impairment or loss of β-cell function leading to chronic hyperglycaemia. While immune cells are present throughout the whole pancreas in normality, their number and activation is increased in diabetes. Different patterns and composition of inflammation could be observed in type 1, type 2 and type 3c diabetes. Immune cells, pancreatic stellate cells and fibrosis were present in the islet microenvironment and could add to β-cell dysfunction and therefore development and progression of diabetes. First studies investigating the use of anti-inflammatory drugs demonstrate their ability to rescue remaining β-cell function and their potential benefit in diabetes treatment. This article provides an overview of immune cell infiltrates in different types of diabetes, highlights the knowledge of their impact on β-cell function and introduces the potential of immunomodulatory strategies.
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Affiliation(s)
- Nicole Kattner
- Translational and Clinical Research Institute, Newcastle University, Medical School, Framlington Place, Newcastle upon Tyne, UK
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Paratore M, Garcovich M, Ainora ME, Del Vecchio LE, Cuccia G, Riccardi L, Pompili M, Gasbarrini A, Zocco MA. The Role of Transabdominal Ultrasound Elastography in Gastrointestinal Non-Liver Diseases: Current Application and Future Prospectives. Diagnostics (Basel) 2023; 13:2266. [PMID: 37443663 DOI: 10.3390/diagnostics13132266] [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: 05/08/2023] [Revised: 06/28/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023] Open
Abstract
Ultrasound imaging is the first-line investigation for patients with abdominal symptoms, as it effectively depicts the gastrointestinal tract and enables the diagnosis of multiple pathological conditions. Among different recent ultrasound technological advancements, elastography enables the evaluation of various tissue characteristics, such as neoplastic transformation or fibroinflammatory status. In recent years, ultrasound elastography has been utilized extensively for the study of liver diseases and in numerous other clinical settings, including gastrointestinal diseases. Current guidelines suggest the use of transabdominal ultrasound elastography to characterize bowel wall lesions, to assess gastrointestinal contractility, to diagnose and grade chronic pancreatitis; however, no specific indications are provided. In the present paper, we summarize the evidence concerning the application of different ultrasound elastography modalities in gastrointestinal non-liver diseases.
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Affiliation(s)
- Mattia Paratore
- Medicina Interna e Gastroenterologia, CEMAD Digestive Disease Center, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy
| | - Matteo Garcovich
- Medicina Interna e Gastroenterologia, CEMAD Digestive Disease Center, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy
| | - Maria Elena Ainora
- Medicina Interna e Gastroenterologia, CEMAD Digestive Disease Center, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy
| | - Livio Enrico Del Vecchio
- Medicina Interna e Gastroenterologia, CEMAD Digestive Disease Center, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy
| | - Giuseppe Cuccia
- Medicina Interna e Gastroenterologia, CEMAD Digestive Disease Center, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy
| | - Laura Riccardi
- Medicina Interna e Gastroenterologia, CEMAD Digestive Disease Center, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy
| | - Maurizio Pompili
- Medicina Interna e Gastroenterologia, CEMAD Digestive Disease Center, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy
- Medicina Interna e del Trapianto di Fegato, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy
| | - Antonio Gasbarrini
- Medicina Interna e Gastroenterologia, CEMAD Digestive Disease Center, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy
- Università Cattolica del Sacro Cuore, Largo A. Gemelli 8, 00168 Rome, Italy
| | - Maria Assunta Zocco
- Medicina Interna e Gastroenterologia, CEMAD Digestive Disease Center, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy
- Università Cattolica del Sacro Cuore, Largo A. Gemelli 8, 00168 Rome, Italy
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Combined Application of Patient-Derived Cells and Biomaterials as 3D In Vitro Tumor Models. Cancers (Basel) 2022; 14:cancers14102503. [PMID: 35626107 PMCID: PMC9139582 DOI: 10.3390/cancers14102503] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/09/2022] [Accepted: 05/16/2022] [Indexed: 02/01/2023] Open
Abstract
Simple Summary For years, cancer has remained the second leading cause of death in U.S. and Europe even though cancer mortality has decreased, as new advances in medical treatment have made this decrease possible. Chemotherapy has remained the gold standard and “one-size-fits-all” treatment for cancer, yet this approach has lacked precision and, at times, failed. Recent studies attempt to mimic the spatial microenvironment of cancer tissue to better study chemotherapy agents by combining patient-derived cells and three-dimensional (3D) scaffold, bioprinting, spheroid, and hydrogel culturing. This commentary aims to collect and discuss recent findings concerning the combined application of biomaterials with patient-derived cancer cells to better study and test therapies in vitro, that will further personalize and facilitate the treatment of various cancers, and also address the limitation and challenges in developing these 3D models. Abstract Although advances have been made in cancer therapy, cancer remains the second leading cause of death in the U.S. and Europe, and thus efforts to continue to study and discover better treatment methods are ongoing. Three-dimensional (3D) tumor models have shown advantages over bi-dimensional (2D) cultures in evaluating the efficacy of chemotherapy. This commentary aims to highlight the potential of combined application of biomaterials with patient-derived cancer cells as a 3D in vitro model for the study and treatment of cancer patients. Five studies were discussed which demonstrate and provided early evidence to create 3D models with accurate microenvironments that are comparable to in vivo tumors. To date, the use of patient-derived cells for a more personalized approach to healthcare in combination with biomaterials to create a 3D tumor is still relatively new and uncommon for application in clinics. Although highly promising, it is important to acknowledge the current limitations and challenges of developing these innovative in vitro models, including the need for biologists and laboratory technicians to become familiar with biomaterial scaffolds, and the effort for bioengineers to create easy-to-handle scaffolds for routine assessment.
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Yu H, Yu T, Wang J, Wei F, Gong H, Dong H, He X, Wang Z, Yang J. Validation of a three-dimensional printed dry lab pancreaticojejunostomy model in surgical assessment: a cross-sectional study. BMJ Open 2022; 12:e052295. [PMID: 35105574 PMCID: PMC8808463 DOI: 10.1136/bmjopen-2021-052295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
OBJECTIVES Until now, there have been few tools to evaluate whether a surgeon was technically ready to perform a safe pancreaticojejunostomy (PJ). In the current study, we aimed to evaluate whether a three-dimensional model could mimic a real surgical situation and distinguish between surgeons of different levels of experiences. DESIGN A three-dimensional PJ dry laboratory model was printed. Eight experienced pancreatic surgeons were tasked to evaluate the appearance and tactile sensation of the model. Proficiency was scored based on 15 surgeons with various levels of pancreatic experience performing a PJ on the three-dimensional model. Additionally, the time of manipulation and NASA Task Load Index (NASA-TLX) scores were recorded for each operation. SETTING Our study was conducted in multimedical centre in China. RESULTS Compared with real surgical situations, this model had similar appearance (3.96±0.55 out of five points) and tactile sensation (3.85±0.46 out of five points) according to the expert evaluation. Additionally, the chief surgeon group scored the best in proficiency (based on NASA-TLX scores and operative time), and there were statistical differences for performances among surgeons of various levels (p<0.05). CONCLUSION The three-dimensional PJ model could mimic a real surgical situation and can distinguish between surgeons of different levels of experiences.
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Affiliation(s)
- Hao Yu
- Key Laboratory of Laparoscopic Technology of Zhejiang Province, Zhejiang University School of Medicine, Sir Run Run Shaw Hospital, Hangzhou, Zhejiang, China
- Department of Thoracic Surgery, Zhejiang University School of Medicine, Sir Run Run Shaw Hospital, Hangzhou, Zhejiang, China
| | - Tunan Yu
- Key Laboratory of Laparoscopic Technology of Zhejiang Province, Zhejiang University School of Medicine, Sir Run Run Shaw Hospital, Hangzhou, China
- Department of General Surgery, Zhejiang University School of Medicine, Sir Run Run Shaw Hospital, Hangzhou, Zhejiang, China
| | - Jiulong Wang
- Department of General Surgery, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Wenzhou, China
| | - Fangqiang Wei
- Department of Hepatobiliary and Pancreatic Surgery, Hangzhou Medical College, Hangzhou, China
| | - Haibo Gong
- Department of Research and Development, Ningbo Trandomed 3D Medical Technology Co., Ltd, Ningbo, Zhejiang, China
| | - Haiying Dong
- Department of Oncology, Hangzhou Medical College, Hangzhou, China
| | - Xinzhong He
- Department of Hepatobiliary and Pancreatic Surgery, The First People's Hospital of Tongxiang City, Jiaxing, Zhejiang, China
| | - Zhifei Wang
- Department of Hepatobiliary and Pancreatic Surgery, Hangzhou Medical College, Hangzhou, China
| | - Jin Yang
- Key Laboratory of Laparoscopic Technology of Zhejiang Province, Zhejiang University School of Medicine, Sir Run Run Shaw Hospital, Hangzhou, Zhejiang, China
- Department of General Surgery, Zhejiang University School of Medicine, Sir Run Run Shaw Hospital, Hangzhou, Zhejiang, China
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