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Ahmad MU, Lee D, Tennakoon L, Chao TE, Spain D, Staudenmayer K. Angioembolization for splenic injuries: does it help? Retrospective evaluation of grade III-V splenic injuries at two level I trauma centers. Trauma Surg Acute Care Open 2024; 9:e001240. [PMID: 38646615 PMCID: PMC11029436 DOI: 10.1136/tsaco-2023-001240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 03/22/2024] [Indexed: 04/23/2024] Open
Abstract
Background Splenic angioembolization (SAE) has increased in utilization for blunt splenic injuries. We hypothesized lower SAE usage would not correlate with higher rates of additional intervention or mortality when choosing initial non-operative management (NOM) or surgery. Study design Trauma registries from two level I trauma centers from 2010 to 2020 were used to identify patients aged >18 years with grade III-V blunt splenic injuries. Results were compared with the National Trauma Data Bank (NTDB) for 2018 for level I and II centers. Additional intervention or failure was defined as any subsequent SAE or surgery. Mortality was defined as death during admission. Results There were 266 vs 5943 patients who met inclusion/exclusion criteria at Stanford/Santa Clara Valley Medical Center (SCVMC) versus the NTDB. Initial intervention differed significantly between cohorts with the use of SAE (6% vs 17%, p=0.000). Failure differed significantly between cohorts (1.5% vs 6.5%, p=0.005). On multivariate analysis, failure in NOM was significantly associated with NTDB cohort status, age 65+ years, more than one comorbidity, mechanism of injury, grade V spleen injury, and Injury Severity Score (ISS) 25+. On multivariate analysis, failure in SAE was significantly associated with Shock Index >0.9 and 10+ units blood in 24 hours. On multivariate analysis, a higher risk of mortality was significantly associated with NTDB cohort status, age 65+ years, no private insurance, more than one comorbidity, mechanism of injury, ISS 25+, 10+ units blood in 24 hours, NOM, more than one hospital complications, anticoagulant use, other Abbreviated Injury Scale ≥3 abdominal injuries. Conclusions Compared with national data, our cohort had less SAE, lower rates of additional intervention, and had lower risk-adjusted mortality. Shock Index >0.9, grade V splenic injuries, and increased transfusion requirements in the first 24 hours may signal a need for surgical intervention rather than SAE or NOM and may reduce mortality in appropriately selected patients. Level of evidence Level II/III.
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Affiliation(s)
- M Usman Ahmad
- Department of Surgery, Stanford University, Stanford, California, USA
| | - David Lee
- Loma Linda University School of Medicine, Loma Linda, California, USA
| | | | - Tiffany Erin Chao
- Department of Surgery, Stanford University, Stanford, California, USA
- Department of Surgery, Santa Clara Valley Medical Center, San Jose, California, USA
| | - David Spain
- Department of Surgery, Stanford University, Stanford, California, USA
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Sun Z, Zhang T, Ahmad MU, Zhou Z, Qiu L, Zhou K, Xiong W, Xie J, Zhang Z, Chen C, Yuan Q, Chen Y, Feng W, Xu Y, Yu L, Wang W, Yu J, Li G, Jiang Y. Comprehensive assessment of immune context and immunotherapy response via noninvasive imaging in gastric cancer. J Clin Invest 2024; 134:e175834. [PMID: 38271117 PMCID: PMC10940098 DOI: 10.1172/jci175834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 01/22/2024] [Indexed: 01/27/2024] Open
Abstract
BACKGROUNDThe tumor immune microenvironment can provide prognostic and therapeutic information. We aimed to develop noninvasive imaging biomarkers from computed tomography (CT) for comprehensive evaluation of immune context and investigate their associations with prognosis and immunotherapy response in gastric cancer (GC).METHODSThis study involved 2,600 patients with GC from 9 independent cohorts. We developed and validated 2 CT imaging biomarkers (lymphoid radiomics score [LRS] and myeloid radiomics score [MRS]) for evaluating the IHC-derived lymphoid and myeloid immune context respectively, and integrated them into a combined imaging biomarker [LRS/MRS: low(-) or high(+)] with 4 radiomics immune subtypes: 1 (-/-), 2 (+/-), 3 (-/+), and 4 (+/+). We further evaluated the imaging biomarkers' predictive values on prognosis and immunotherapy response.RESULTSThe developed imaging biomarkers (LRS and MRS) had a high accuracy in predicting lymphoid (AUC range: 0.765-0.773) and myeloid (AUC range: 0.736-0.750) immune context. Further, similar to the IHC-derived immune context, 2 imaging biomarkers (HR range: 0.240-0.761 for LRS; 1.301-4.012 for MRS) and the combined biomarker were independent predictors for disease-free and overall survival in the training and all validation cohorts (all P < 0.05). Additionally, patients with high LRS or low MRS may benefit more from immunotherapy (P < 0.001). Further, a highly heterogeneous outcome on objective response rate was observed in 4 imaging subtypes: 1 (-/-) with 27.3%, 2 (+/-) with 53.3%, 3 (-/+) with 10.2%, and 4 (+/+) with 30.0% (P < 0.0001).CONCLUSIONThe noninvasive imaging biomarkers could accurately evaluate the immune context and provide information regarding prognosis and immunotherapy for GC.
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Affiliation(s)
- Zepang Sun
- Department of General Surgery & Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Taojun Zhang
- Department of General Surgery & Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | | | - Zixia Zhou
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, California, USA
| | - Liang Qiu
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, California, USA
| | - Kangneng Zhou
- College of Computer Science, Nankai University, Tianjin, China
| | - Wenjun Xiong
- Department of Gastrointestinal Surgery, Guangdong Provincial Hospital of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jingjing Xie
- Graduate Group of Epidemiology, UCD, Davis, California, USA
| | - Zhicheng Zhang
- JancsiTech and Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Chuanli Chen
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qingyu Yuan
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yan Chen
- Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen, China
| | - Wanying Feng
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yikai Xu
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lequan Yu
- The Department of Statistics and Actuarial Science, The University of Hong Kong, HKSAR, Hong Kong, China
| | - Wei Wang
- Department of Gastric Surgery, and State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Jiang Yu
- Department of General Surgery & Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Guoxin Li
- Department of General Surgery & Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Yuming Jiang
- Department of Radiation Oncology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
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Jiang Y, Zhang Z, Wang W, Huang W, Chen C, Xi S, Ahmad MU, Ren Y, Sang S, Xie J, Wang JY, Xiong W, Li T, Han Z, Yuan Q, Xu Y, Xing L, Poultsides GA, Li G, Li R. Biology-guided deep learning predicts prognosis and cancer immunotherapy response. Nat Commun 2023; 14:5135. [PMID: 37612313 PMCID: PMC10447467 DOI: 10.1038/s41467-023-40890-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 08/15/2023] [Indexed: 08/25/2023] Open
Abstract
Substantial progress has been made in using deep learning for cancer detection and diagnosis in medical images. Yet, there is limited success on prediction of treatment response and outcomes, which has important implications for personalized treatment strategies. A significant hurdle for clinical translation of current data-driven deep learning models is lack of interpretability, often attributable to a disconnect from the underlying pathobiology. Here, we present a biology-guided deep learning approach that enables simultaneous prediction of the tumor immune and stromal microenvironment status as well as treatment outcomes from medical images. We validate the model for predicting prognosis of gastric cancer and the benefit from adjuvant chemotherapy in a multi-center international study. Further, the model predicts response to immune checkpoint inhibitors and complements clinically approved biomarkers. Importantly, our model identifies a subset of mismatch repair-deficient tumors that are non-responsive to immunotherapy and may inform the selection of patients for combination treatments.
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Affiliation(s)
- Yuming Jiang
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA, USA
| | - Zhicheng Zhang
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA, USA
- JancsiTech and Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Wei Wang
- Department of Gastric Surgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Weicai Huang
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Chuanli Chen
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Sujuan Xi
- The Reproductive Medical Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - M Usman Ahmad
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Yulan Ren
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA, USA
| | - Shengtian Sang
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA, USA
| | - Jingjing Xie
- Graduate Group of Epidemiology, University of California Davis, Davis, CA, USA
| | - Jen-Yeu Wang
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA, USA
| | - Wenjun Xiong
- Department of Gastrointestinal Surgery, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Tuanjie Li
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhen Han
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qingyu Yuan
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yikai Xu
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lei Xing
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA, USA
| | - George A Poultsides
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Guoxin Li
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| | - Ruijiang Li
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA, USA.
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Vega EA, Newhook TE, Mellado S, Ruzzenente A, Okuno M, De Bellis M, Panettieri E, Ahmad MU, Merlo I, Rojas J, De Rose AM, Nishino H, Sinnamon AJ, Donadon M, Hauger MS, Guevara OA, Munoz C, Denbo JW, Chun YS, Tran Cao HS, Sanchez Claria R, Tzeng CWD, De Aretxabala X, Vivanco M, Brudvik KW, Seo S, Pekolj J, Poultsides GA, Torzilli G, Giuliante F, Anaya DA, Guglielmi A, Vinuela E, Vauthey JN. Benchmarks and Geographic Differences in Gallbladder Cancer Surgery: An International Multicenter Study. Ann Surg Oncol 2023; 30:4904-4911. [PMID: 37149547 DOI: 10.1245/s10434-023-13531-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 04/05/2023] [Indexed: 05/08/2023]
Abstract
BACKGROUND High-quality surgery plays a central role in the delivery of excellent oncologic care. Benchmark values indicate the best achievable results. We aimed to define benchmark values for gallbladder cancer (GBC) surgery across an international population. PATIENTS AND METHODS This study included consecutive patients with GBC who underwent curative-intent surgery during 2000-2021 at 13 centers, across seven countries and four continents. Patients operated on at high-volume centers without the need for vascular and/or bile duct reconstruction and without significant comorbidities were chosen as the benchmark group. RESULTS Of 906 patients who underwent curative-intent GBC surgery during the study period, 245 (27%) were included in the benchmark group. These were predominantly women (n = 174, 71%) and had a median age of 64 years (interquartile range 57-70 years). In the benchmark group, 50 patients (20%) experienced complications within 90 days after surgery, with 20 patients (8%) developing major complications (Clavien-Dindo grade ≥ IIIa). Median length of postoperative hospital stay was 6 days (interquartile range 4-8 days). Benchmark values included ≥ 4 lymph nodes retrieved, estimated intraoperative blood loss ≤ 350 mL, perioperative blood transfusion rate ≤ 13%, operative time ≤ 332 min, length of hospital stay ≤ 8 days, R1 margin rate ≤ 7%, complication rate ≤ 22%, and rate of grade ≥ IIIa complications ≤ 11%. CONCLUSIONS Surgery for GBC remains associated with significant morbidity. The availability of benchmark values may facilitate comparisons in future analyses among GBC patients, GBC surgical approaches, and centers performing GBC surgery.
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Affiliation(s)
- Eduardo A Vega
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
- Department of Surgery, Saint Elizabeth's Medical Center, Boston University School of Medicine, Boston, MA, USA.
| | - Timothy E Newhook
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Sebastian Mellado
- Department of Surgery, Saint Elizabeth's Medical Center, Boston University School of Medicine, Boston, MA, USA
- Tuft University School of Medicine, Boston, MA, USA
| | - Andrea Ruzzenente
- Department of Surgery, Dentistry, Gynecology and Pediatrics, Division of General and Hepatobiliary Surgery, G.B. Rossi University Hospital, University of Verona, Verona, Italy
| | - Masayuki Okuno
- Department of Gastroenterological Surgery, Hyogo Medical University, Nishinomiya, Hyogo, Japan
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Mario De Bellis
- Department of Surgery, Dentistry, Gynecology and Pediatrics, Division of General and Hepatobiliary Surgery, G.B. Rossi University Hospital, University of Verona, Verona, Italy
| | - Elena Panettieri
- Hepatobiliary Surgery Unit, Fondazione "Policlinico Universitario A. Gemelli" IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - M Usman Ahmad
- Department of Surgery, Stanford University, Stanford, CA, USA
| | - Ignacio Merlo
- General Surgery and Liver Transplant Unit, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Jesus Rojas
- UGI & HPB Surgery Unit, Hospital Regional de Talca, Universidad Catolica del Maule, Talca, Chile
| | - Agostino M De Rose
- Hepatobiliary Surgery Unit, Fondazione "Policlinico Universitario A. Gemelli" IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Hiroto Nishino
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Andrew J Sinnamon
- Section of Hepatobiliary Tumors, Department of Gastrointestinal Oncology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, USA
| | - Matteo Donadon
- Division of Hepatobiliary and General Surgery, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Marit S Hauger
- Department of Hepato-Pancreato-Biliary Surgery, Oslo University Hospital, Oslo, Norway
| | - Oscar A Guevara
- Department of Surgery, Instituto Nacional de Cancerologia, Bogota, Colombia
| | - Cesar Munoz
- UGI & HPB Surgery Unit, Hospital Regional de Talca, Universidad Catolica del Maule, Talca, Chile
| | - Jason W Denbo
- Section of Hepatobiliary Tumors, Department of Gastrointestinal Oncology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, USA
| | - Yun Shin Chun
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Hop S Tran Cao
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Rodrigo Sanchez Claria
- General Surgery and Liver Transplant Unit, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Ching-Wei D Tzeng
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Xabier De Aretxabala
- Gallbladder Consortium Chile, Department of Digestive Surgery, Hepato-Pancreato-Biliary Surgery Unit, Surgery Service, Sotero del Rio Hospital and Clinica Alemana de Santiago, Santiago, Chile
| | - Marcelo Vivanco
- Gallbladder Consortium Chile, Department of Digestive Surgery, Hepato-Pancreato-Biliary Surgery Unit, Surgery Service, Sotero del Rio Hospital and Clinica Alemana de Santiago, Santiago, Chile
| | - Kristoffer W Brudvik
- Department of Hepato-Pancreato-Biliary Surgery, Oslo University Hospital, Oslo, Norway
| | - Satoru Seo
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Juan Pekolj
- General Surgery and Liver Transplant Unit, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | | | - Guido Torzilli
- Division of Hepatobiliary and General Surgery, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Felice Giuliante
- Hepatobiliary Surgery Unit, Fondazione "Policlinico Universitario A. Gemelli" IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Daniel A Anaya
- Section of Hepatobiliary Tumors, Department of Gastrointestinal Oncology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, USA
| | - Alfredo Guglielmi
- Department of Surgery, Dentistry, Gynecology and Pediatrics, Division of General and Hepatobiliary Surgery, G.B. Rossi University Hospital, University of Verona, Verona, Italy
| | - Eduardo Vinuela
- Gallbladder Consortium Chile, Department of Digestive Surgery, Hepato-Pancreato-Biliary Surgery Unit, Surgery Service, Sotero del Rio Hospital and Clinica Alemana de Santiago, Santiago, Chile
| | - Jean-Nicolas Vauthey
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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Ahmad MU, Javadi C, Poultsides GA. Neoadjuvant Treatment Strategies for Resectable Proximal Gastric, Gastroesophageal Junction and Distal Esophageal Cancer. Cancers (Basel) 2022; 14:cancers14071755. [PMID: 35406527 PMCID: PMC8996907 DOI: 10.3390/cancers14071755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/23/2022] [Accepted: 03/25/2022] [Indexed: 01/27/2023] Open
Abstract
Simple Summary The five-year survival for resectable proximal gastric, gastroesophageal junction (GEJ), and distal esophageal cancer ranges from 30 to 60% globally. Neoadjuvant and/or perioperative therapy has emerged as a treatment tool to improve patient selection for surgery, resectability, and locoregional control of the disease. As a result, treatment strategies have evolved from the first trials in the late 1980s to the pivotal CROSS trial updated in 2015. The review summarizes current clinical trials and treatment recommendations with regard to neoadjuvant and/or perioperative therapy for patients with adenocarcinoma and squamous cell carcinoma of the distal esophagus, GEJ, and proximal stomach. Abstract Neoadjuvant treatment strategies for resectable proximal gastric, gastroesophageal junction (GEJ), and distal esophageal cancer have evolved over several decades. Treatment recommendations differ based on histologic type—squamous cell carcinoma (SCC) versus adenocarcinoma (AC)—as well as the exact location of the tumor. Recent and older clinical trials in this area were critically reviewed. Neoadjuvant chemoradiation with concurrent taxane- or fluoropyrimidine-based chemotherapy has an established role for both AC and SCC of the distal esophagus and GEJ. The use of perioperative chemotherapy for gastric AC is based on the FLOT4 and MAGIC trials; however, the utility of neoadjuvant chemoradiation in this setting requires further evaluation. Additional clinical trials evaluating chemotherapy, targeted therapy, immunotherapy, and radiation that are currently in process are highlighted, given the need for further disease control.
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Abstract
In the realm of clinical ethics as well as in health policy and organizational ethics, the onus of our work as ethicists is to optimize the medical care and experience of the patient to better target ethical dilemmas that develop in the course of care delivery. The role of ethics is critical in all aspects of medicine, but particularly so in the difficult and often challenging cases that arise in the care of pregnant women and newborns. One exemplary situation is that when a pregnant woman and her partner consider neonatal organ donation after receiving news of a terminal diagnosis and expected death of the newborn. While a newer, less practiced form of organ donation, this approach is gaining greater visibility as an option for parents facing this terminal outcome. The aim of our paper is to highlight some of the key ethical issues associated with neonatal organ donation and identify clinical and logistical aspects of implementing such an approach to facilitate organ donation.
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Affiliation(s)
- M U Ahmad
- Center for Bioethics, Cleveland Clinic, Cleveland, OH, USA
| | - R M Farrell
- Center for Bioethics, Cleveland Clinic, Cleveland, OH, USA.,Department of Obstetrics and Gynecology, Cleveland Clinic, Cleveland, OH, USA
| | - K L Weise
- Center for Bioethics, Cleveland Clinic, Cleveland, OH, USA.,Pediatric Institute, Cleveland Clinic Children's, Cleveland, OH, USA
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Ahmad MU, Riley KD, Ridder TS. Acute Colonic Pseudo-Obstruction After Posterior Spinal Fusion: A Case Report and Literature Review. World Neurosurg 2020; 142:352-363. [PMID: 32659357 DOI: 10.1016/j.wneu.2020.07.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 06/30/2020] [Accepted: 07/02/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Acute colonic pseudo-obstruction (ACPO) or Ogilvie's syndrome occurs in 0.22%-7% of patients undergoing surgery, with a mortality of up to 46%. ACPO increased median hospital days versus control in spinal surgery (14 vs. 6 days; P < 0.001). If defined as postoperative ileus, the incidence was 7%-13.4%. Postoperative ileus is associated with 2.9 additional hospital days and an $80,000 increase in cost per patient. We present a case of ACPO in an adult patient undergoing spinal fusion for correction of scoliosis and review the available literature to outline clinical characteristics and surgical outcomes. CASE DESCRIPTION The patient was a 31-year-old woman with untreated advanced scoliosis with no history of neurologic issues. T2-L3 spinal instrumentation and fusion was completed. Plain abdominal radiography showed of dilated cecum 11 cm and the department of general surgery was consulted. Neostigmine administration was planned after conservative treatment failure after transfer to the intensive care unit. The patient was discharged home with no recurrence >60 days. Thirty cases were found in our literature review using PubMed and Embase databases and summarized. CONCLUSIONS Of 30 cases reviewed, only 3 cases of ACPO were specific to patients undergoing spinal fusion for scoliosis. According to the literature, 20% of patients had resolution with conservative treatment, 40% with neostigmine, and 30% with surgical intervention. Other noninvasive treatments may have similar efficacy in preventing complications leading to surgical invention. Sixty clinical trials and 9 systematic reviews were summarized with an updated management algorithm.
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Affiliation(s)
- M Usman Ahmad
- Department of Surgery, University of Colorado School of Medicine, Aurora, Colorado, USA.
| | - Keyan D Riley
- Trauma and Acute Care Surgery, Memorial Hospital, University of Colorado Health, Colorado Springs, Colorado, USA
| | - Thomas S Ridder
- Pediatric and Adult Neurosurgery, UCHealth Brain & Spine Clinic, Children's Hospital of Colorado, Colorado Springs, Colorado, USA
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Ahmad MU, Zhang A, Mhaskar R. A predictive model for decreasing clinical no-show rates in a primary care setting. International Journal of Healthcare Management 2019. [DOI: 10.1080/20479700.2019.1698864] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- M. Usman Ahmad
- Medical Education, University of South Florida (USF) Morsani College of Medicine (MCOM), Tampa, FL, USA
| | - Angie Zhang
- Medical Education, University of South Florida (USF) Morsani College of Medicine (MCOM), Tampa, FL, USA
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Creelan BC, Ahmad MU, Kaszuba FJ, Khalil FK, Welsh AW, Ozdemirli M, Grant NN, Subramaniam DS. Clinical Activity of Nivolumab for Human Papilloma Virus-Related Juvenile-Onset Recurrent Respiratory Papillomatosis. Oncologist 2019; 24:829-835. [PMID: 30842242 DOI: 10.1634/theoncologist.2018-0505] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 02/08/2019] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Juvenile-onset recurrent respiratory papillomatosis (JO-RRP) is a human papilloma virus-mediated progressive benign neoplasm that affects children and young adults. Primary management consists of regular surgical debulking to maintain airway patency and vocal function. Like condyloma acuminata, JO-RRP is associated with immune dysregulation, and T cells isolated from papillomas express an anergic phenotype. Therefore, we hypothesized that programmed death protein 1 axis inhibition could stabilize tumor growth. MATERIALS AND METHODS We treated two patients with refractory JO-RRP using nivolumab, with the primary objective of assessing clinical activity. We explored baseline papilloma features using immunohistochemistry and comprehensive genomic profiling. RESULTS Both patients experienced symptomatic improvement, and interval laryngoscopies revealed a reduction in papillomatosis burden. One patient has not required subsequent surgical debridement for almost 2 years. On pathologic examination of pretreatment papillomas from both cases, infiltrating T cells were evident in the papilloma stroma, and papilloma programmed death ligand 1 expression was absent. Papilloma mutational load ranged between three and six mutations per megabase for each case. From on-treatment biopsy tissue, a higher amount of intraepithelial T cells and programmed death ligand 1 expression were detected in the papilloma. CONCLUSION Nivolumab appears to have promising activity in JO-RRP, and further clinical investigation with more patients in clinical trials is warranted. IMPLICATIONS FOR PRACTICE To the authors' knowledge, this article is the first report describing clinical activity with a programed cell death-1 (PD-1) inhibitor to treat a rare but detrimental type of respiratory tract epithelial neoplasm that afflicts young adults. Two patients were treated, and tumor features, such as mutational load, were examined with the intent to stimulate future hypotheses for translational research. The safety and activity of PD-1 inhibitors in this population still need to be corroborated in clinical trials and should not yet be adopted into clinical practice.
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Affiliation(s)
- Ben C Creelan
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - M Usman Ahmad
- Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - Frank J Kaszuba
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Farah K Khalil
- Department of Anatomic Pathology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | | | - Metin Ozdemirli
- Department of Pathology, Georgetown Lombardi Comprehensive Cancer Center, MedStar Georgetown University Medical Center, Washington, D.C., USA
| | - Nazaneen N Grant
- Department of Otolaryngology, Georgetown Lombardi Comprehensive Cancer Center, MedStar Georgetown University Medical Center, Washington, D.C., USA
| | - Deepa S Subramaniam
- Division of Hematology/Oncology, Georgetown Lombardi Comprehensive Cancer Center, MedStar Georgetown University Medical Center, Washington, D.C., USA
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Zhang ZY, Ugwu S, Zhang A, Ahmad MU, Ahmad I, Chiu S, Lee RL. A novel cationic cardiolipin analogue for gene delivery. Pharmazie 2006; 61:10-4. [PMID: 16454198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The optically active R and S isomers of cationic cardiolipin analogues (CCA) were synthesized and evaluated as a liposome based transfection reagent. Both isomers form stable liposomes with mean diameters of about 120 nm without any additional lipid ingredients. No significant change in particle size distribution profile was observed over one-month storage at room temperature (20-25 degrees C). The gel to liquid crystalline phase transition temperature (Tm) of cationic liposomes comprised of both R and S isomers was approximately 2 degrees C, as measured by differential scanning calorimetry (DSC). Both isomers also formed stable liposomes when combined with DOPE. In vitro transfection efficiency of the CCA/DOPE liposomes complexed to plasmid DNA was evaluated using a luciferase reporter gene. Both liposomes composed of R and S isomers of the cationic cardiolipin displayed higher transfection efficiency than commercially available Lipofectin. Further in vivo studies are warranted.
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Matior Rahman AKM, Ahmad MU, Datta BK, Bachar SC, Saha A, Sutradhar RK. Analgesic and antiinflammatory activities ofSida cordifoliaLinn. Indian J Pharmacol 2006. [DOI: 10.4103/0253-7613.25812] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Abstract
Pseudophrynamine, lunacridine and the new compound 2-(2',4',6'-trimethyl-heptenyl)-4-quinozolone were isolated from the leaves of Zanthoxylum budrunga.
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Affiliation(s)
- M U Ahmad
- Department of Chemistry, Jahangirnagar University, Savar, Dhaka, Bangladesh.
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Abstract
The nitrosation of gramine, a tertiary amine alkaloid present in barley malt, was carried out by reaction with sodium nitrite in buffered acetic acid (pH 3.4) for 1 hr at room temperature. Following the previous isolation and identification of the major nitrosation products (Ahmad et al. Fd Chem. Toxic. 1985, 23, 841), two minor products were isolated by HPLC and identified as indolin-3-one oxime and indole-3-aldehyde. Identification was based on mass spectrometry. The results give strong support to the hypothesis that gramine does not undergo nitrosation by nitrosative dealkylation.
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Affiliation(s)
- M U Ahmad
- Department of Food Science & Technology, Oregon State University, Corvallis 97331
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Ahmad MU, Libbey LM, Scanlan RA. Synthesis of N1-nitroso-3-nitromethylindole: a nonvolatile N-nitroso compound isolated from the nitrosation of the alkaloid gramine. Food Addit Contam 1987; 4:45-8. [PMID: 3556675 DOI: 10.1080/02652038709373613] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
An approach to the synthesis of N1-nitroso-3-nitromethylindole, a nitrosation product of the alkaloid gramine, is described. The method involves a few reaction steps starting from indole-3-carbinol.
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Abstract
The nitrosation of gramine, a tertiary amine alkaloid present in barley malt, was carried out by reaction with sodium nitrite in buffered acetic acid (pH 3.4) for 1 hr at room temperature. Two major non-volatile products of the nitrosation reaction were isolated by preparative HPLC and characterized as indole-3-carboxylic acid and N1-nitroso-3-nitromethylindole. This interpretation was supported by spectral data. The nature of these products indicated that gramine did not undergo nitrosation by the expected mechanism of nitrosative dealkylation. A mechanism is offered to explain the labile nature of the dimethylamino group found in gramine.
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Ahmad MU, Husain SK, Ahmad M, Osman SM. Cyclopropenoid fatty acids in seed oils of Sida acuta and Sida rhombifolia (Malvaceae). J AM OIL CHEM SOC 1976; 53:698-9. [PMID: 972241 DOI: 10.1007/bf02586341] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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