1
|
Liu ZL, Meng XY, Bao RJ, Shen MY, Sun JJ, Chen WD, Liu F, He Y. Single cell deciphering of progression trajectories of the tumor ecosystem in head and neck cancer. Nat Commun 2024; 15:2595. [PMID: 38519500 PMCID: PMC10959966 DOI: 10.1038/s41467-024-46912-6] [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: 05/04/2023] [Accepted: 03/14/2024] [Indexed: 03/25/2024] Open
Abstract
Head and neck squamous cell carcinoma is the sixth most common cancer worldwide and has high heterogeneity and unsatisfactory outcomes. To better characterize the tumor progression trajectory, we perform single-cell RNA sequencing of normal tissue, precancerous tissue, early-stage, advanced-stage cancer tissue, lymph node, and recurrent tumors tissue samples. We identify the transcriptional development trajectory of malignant epithelial cells and a tumorigenic epithelial subcluster regulated by TFDP1. Furthermore, we find that the infiltration of POSTN+ fibroblasts and SPP1+ macrophages gradually increases with tumor progression; their interaction or interaction with malignant cells also gradually increase to shape the desmoplastic microenvironment and reprogram malignant cells to promote tumor progression. Additionally, we demonstrate that during lymph node metastasis, exhausted CD8+ T cells with high CXCL13 expression strongly interact with tumor cells to acquire more aggressive phenotypes of extranodal expansion. Finally, we delineate the distinct features of malignant epithelial cells in primary and recurrent tumors, providing a theoretical foundation for the precise selection of targeted therapy for tumors at different stages. In summary, the current study offers a comprehensive landscape and deep insight into epithelial and microenvironmental reprogramming throughout initiation, progression, lymph node metastasis and recurrence of head and neck squamous cell carcinoma.
Collapse
Affiliation(s)
- Z L Liu
- Department of Oral Maxillofacial & Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology Shanghai, Shanghai, 200011, China
| | - X Y Meng
- Department of Oral Maxillofacial & Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology Shanghai, Shanghai, 200011, China
| | - R J Bao
- Shanghai Institute of Immunology, State Key Laboratory of Oncogenes and Related Genes, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - M Y Shen
- Shanghai Institute of Immunology, State Key Laboratory of Oncogenes and Related Genes, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - J J Sun
- Department of Oral Pathology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology Shanghai, Shanghai, 200011, China
| | - W D Chen
- Novel Bioinformatics Co., Ltd, Shanghai, China
| | - F Liu
- Department of Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Y He
- Department of Oral Maxillofacial & Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology Shanghai, Shanghai, 200011, China.
| |
Collapse
|
2
|
Wu TH, Lu YJ, Chiang MR, Chen PH, Lee YS, Shen MY, Chiang WH, Liu YC, Chuang CY, Amy Lin HC, Hu SH. Lung metastasis-Harnessed in-Situ adherent porous organic nanosponge-mediated antigen capture for A self-cascaded detained dendritic cells and T cell infiltration. Biomaterials 2024; 305:122443. [PMID: 38160627 DOI: 10.1016/j.biomaterials.2023.122443] [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: 06/12/2023] [Revised: 10/06/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
The infiltration of cytotoxic T lymphocytes promises to suppress the most irresistible metastatic tumor for immunotherapy, yet immune privilege and low immunogenic responses in these aggressive clusters often restrict lymphocyte recruitment. Here, an in situ adherent porous organic nanosponge (APON) doubles as organ selection agent and antigen captor to overcome immune privilege is developed. With selective organ targeting, the geometric effect of APON composed of disc catechol-functionalized covalent organic framework (COF) boosts the drug delivery to lung metastases. Along with a self-cascaded immune therapy, the therapeutic agents promote tumor release of damage-associated molecular patterns (DAMPs), and then, in situ deposition of gels to capture these antigens. Furthermore, APON with catechol analogs functions as a reservoir of antigens and delivers autologous DAMPs to detain dendritic cells, resulting in a sustained enhancement of immunity. This disc sponges (APON) at lung metastasis as antigen reservoirs and immune modulators effectively suppress the tumor in 60 days and enhanced the survival rate.
Collapse
Affiliation(s)
- Ting-Hsien Wu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Yu-Jen Lu
- Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou, Tao-Yuan 33305, Taiwan; The College of Medicine, Chang Gung University, Tao-Yuan 33302, Taiwan
| | - Min-Ren Chiang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Pin-Hua Chen
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Yu-Sheng Lee
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Ming-Yin Shen
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 300044, Taiwan; Department of Surgery, China Medical University Hsinchu Hospital, Hsinchu County, 30272, Taiwan
| | - Wen-Hsuan Chiang
- Department of Chemical Engineering, National Chung Hsing University, Taichung, 402, Taiwan
| | - Yu-Chen Liu
- Laboratory for Human Immunology (Single Cell Genomics), WPI Immunology Frontier Research Center, Osaka University, Osaka, 565-0871, Japan
| | - Chun-Yu Chuang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Hsiao-Chun Amy Lin
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Shang-Hsiu Hu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 300044, Taiwan.
| |
Collapse
|
3
|
Shen MY, Fingerhut A. Robotic Right Colectomy With Complete Mesocolic Excision, D3 Lymph Node Dissection, and Intracorporeal Anastomosis. Dis Colon Rectum 2024; 67:e122-e123. [PMID: 37962116 DOI: 10.1097/dcr.0000000000002828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Affiliation(s)
- Ming-Yin Shen
- Department of Surgery, China Medical University Hsinchu Hospital, Hsinchu, Taiwan
| | - Abraham Fingerhut
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine Shanghai, China
- Section for Surgical Research, Department of Surgery, Medical University of Graz, Graz, Austria
| |
Collapse
|
4
|
Han LQ, Shen MY, Tang XY, Wan PX, Lao LD, He T. [Best evidence summary of prevention strategies for pressure injury in adult hospitalized burn patients]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:867-873. [PMID: 37805803 DOI: 10.3760/cma.j.cn501225-20230328-00101] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/09/2023]
Abstract
Objective: To summarize the best evidence of prevention strategies for pressure injury in adult hospitalized burn patients. Methods: A bibliometric approach was used. Systematic searches were carried out to retrieve the published evidence of prevention strategies for pressure injury in adult hospitalized burn patients in the official websites of relevant academic organizations such as International Society for Burn injury, American Burn Association, and Japanese Dermatology Association, National Pressure Injury Advisory Panel, European Pressure Injury Advisory Panel, Pan Pacific Pressure Injury Alliance International Guidelines Website, foreign language databases such as UpToDate, BMJ Best Practice, MedSci, Joanna Briggs Institute Evidence-Based Practice Database, Cochrane Library, Web of Science, Embase, and PubMed, and Chinese databases such as China Biology Medicine disc, China National Knowledge Infrastructure, Wanfang Database, and China Clinical Guidelines Library. The literature types include clinical decision-making, evidence summary, guidelines, systematic review, and expert consensus. The search time was till February 21st, 2023. Two researchers independently screened the literature and evaluated the quality, and other researchers extracted and graded the evidence according to the topic. Results: A total of 10 papers were included, including 6 evidence summaries, 3 guidelines, and 1 expert consensus, all with high literature quality. After extracting evidence and classifying, 27 pieces of best evidences were summarized from three aspects, including prevention training and supervision, risk assessment, and prevention measures of pressure injury. Conclusions: A total of 27 pieces of best evidences of prevention strategies for pressure injury in adult hospitalized burn patients were summarized from 3 aspects. Medical workers can follow the best evidence and give personalized prevention strategies according to the specific condition of adult hospitalized burn patients to reduce the incidence of pressure injury.
Collapse
Affiliation(s)
- L Q Han
- Shulan International Medical College, Zhejiang Shuren University, Hangzhou 310011, China
| | - M Y Shen
- Shulan International Medical College, Zhejiang Shuren University, Hangzhou 310011, China
| | - X Y Tang
- School of Nursing, Zhejiang University,Hangzhou 310058,China
| | - P X Wan
- Shulan International Medical College, Zhejiang Shuren University, Hangzhou 310011, China
| | - L D Lao
- Wound Specialist Nursing Clinic, Shulan (Hangzhou) Hospital, Hangzhou 310022, China
| | - T He
- Shulan International Medical College, Zhejiang Shuren University, Hangzhou 310011, China
| |
Collapse
|
5
|
Lin CY, Shen MY, Chen WTL, Yang CA. Evaluation of the Prognostic Value of Low-Frequency KRAS Mutation Detection in Circulating Tumor DNA of Patients with Metastatic Colorectal Cancer. J Pers Med 2023; 13:1051. [PMID: 37511664 PMCID: PMC10381461 DOI: 10.3390/jpm13071051] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/24/2023] [Accepted: 06/25/2023] [Indexed: 07/30/2023] Open
Abstract
KRAS mutation in tumor tissue is a well-known predictor of resistance to the treatment of anti-EGFR antibodies in metastatic colorectal cancers (mCRC). However, the prognostic value of low-frequency plasma circulating tumor DNA (ctDNA) KRAS mutation in predicting treatment resistance in pretreated mCRC patients remains controversial. This study retrospectively reviewed the clinical course, including response to anti-EGFR and anti-VEGF therapies, and changes in serum tumor marker levels along with image studies in mCRC patients with <1.5% KRAS mutations detected in plasma ctDNA by next-generation sequencing (NGS) at a single center in Taiwan. We identified six pretreated mCRC patients with low-frequency KRAS G12V/G12D/G12S/G13D mutations (variant allele frequency 0.26~1.23%) in plasma ctDNA. Co-occurring low-frequency ctDNA mutations in APC, TP53, MAP2K1, KEAP1, or CTNNB1 were also detected. Although all six patients had treatment adjustments within one month after the ctDNA genetic test, image-evident tumor progression was noted in all patients within a median of 4 months afterwards. Re-challenge therapy with a combination of anti-EGFR, anti-VEGF, and FOLFIRI chemotherapy was found to be ineffective in a patient with 0.38% KRAS G12D mutation in baseline ctDNA. Our study suggests that the detection of low-frequency KRAS mutations in ctDNA could be used as a predictor of treatment response in mCRC patients.
Collapse
Affiliation(s)
- Chien-Yu Lin
- Integrated Precision Health and Immunodiagnostic Center, Department of Laboratory Medicine, China Medical University Hsinchu Hospital, Zhubei City 302, Taiwan
| | - Ming-Yin Shen
- Department of Colorectal Surgery, China Medical University Hsinchu Hospital, Zhubei City 302, Taiwan
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan
| | - William Tzu-Liang Chen
- Department of Colorectal Surgery, China Medical University Hsinchu Hospital, Zhubei City 302, Taiwan
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan
- College of Medicine, China Medical University, Taichung 404, Taiwan
| | - Chin-An Yang
- Integrated Precision Health and Immunodiagnostic Center, Department of Laboratory Medicine, China Medical University Hsinchu Hospital, Zhubei City 302, Taiwan
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan
- College of Medicine, China Medical University, Taichung 404, Taiwan
| |
Collapse
|
6
|
Shen MY, Zhang L, Zhu SZ, Pan JJ, Tang YM, Li Q, Zhou MG, He TJ. [Associations between different levels of blood pressure and risk of prediabetes]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1939-1944. [PMID: 36572467 DOI: 10.3760/cma.j.cn112338-20220505-00379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Objective: To explore sex and rural-urban differences in the associations of different blood pressure levels with the risk of prediabetes. Methods: We used a multi-stage stratified cluster random sampling method to investigate 21 637 residents aged ≥18 years from 10 survey areas in Hubei province in 2020. The data on questionnaire, physical measurements, and laboratory indicators of the participants were collected. The associations of different blood pressure levels with risk of prediabetes by sex and regions were analyzed using multivariate logistic regressions after complex weighting. Results: A total of 16 111 subjects were included. The prevalence (95%CI) of prediabetes, impaired fasting glucose (IFG), impaired glucose tolerance (IGT), and IFG complicated with IGT were 25.1% (14.4%-35.9%), 12.7% (3.2%-22.1%), 8.1% (6.3%-9.8%), and 4.4% (2.3%-6.5%), respectively. After multivariate adjustment, the risk of prediabetes, IFG, IGT, and IFG complicated with IGT increased with the increment of blood pressure (both P for trend <0.05). The positive dose-response relationships between blood pressure levels and risk of prediabetes were also significant among male, urban, and rural residents (both P for trend <0.05), and the interactions between sex and blood pressure showed significant associations for risk of prediabetes and IGT (both P for interaction <0.05). Conclusions: Higher blood pressure levels were associated with an increased risk of prediabetes. The association with prediabetes was stronger in males, but no significant difference was found between urban and rural residents. More distinctive and effective prevention and control strategies should be developed for different populations.
Collapse
Affiliation(s)
- M Y Shen
- Department of Disease Surveillance, Institute of Chronic Disease Control and Prevention, Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, China
| | - L Zhang
- Department of Disease Surveillance, Institute of Chronic Disease Control and Prevention, Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, China
| | - S Z Zhu
- Department of Disease Surveillance, Institute of Chronic Disease Control and Prevention, Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, China
| | - J J Pan
- Department of Disease Surveillance, Institute of Chronic Disease Control and Prevention, Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, China
| | - Y M Tang
- Department of Disease Surveillance, Institute of Chronic Disease Control and Prevention, Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, China
| | - Q Li
- Department of Disease Surveillance, Institute of Chronic Disease Control and Prevention, Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, China
| | - M G Zhou
- Department of Disease Surveillance, Institute of Chronic Disease Control and Prevention, Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, China
| | - T J He
- Department of Disease Surveillance, Institute of Chronic Disease Control and Prevention, Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, China
| |
Collapse
|
7
|
Kraler S, Wenzl FA, Shen MY, Von Eckardstein A, Raeber L, Mach F, Nanchen D, Matter C, Gencer B, Camici GG, Chen CH, Akhmedov A, Luescher TF. Quality matters: low-density lipoprotein electronegativity but not quantity determines mortality risk in acute coronary syndromes. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Changes in the protein composition of low-density lipoprotein (LDL) particles induce a shift in their electronegativity, a phenomenon implicated in both pro-inflammatory and pro-atherogenic signalling (1). While high levels of LDL foster the build-up of atherosclerotic plaques, and as such the susceptibility for the development of acute coronary syndromes (ACS), LDL levels assessed at the time of presentation fail to associate with fatal events following the index event (2). Experimental data suggest that altered LDL electronegativity exerts functional effects on both the myocardium and vasculature (1,3).
Purpose
We aimed to study the association between LDL electronegativity, assessed at the time of acute presentation, and all-cause mortality following the index ACS.
Methods
We designed a case-cohort study in 2'619 ACS patients prospectively recruited in the investigator-driven, multicentre SPUM-ACS study (ClinicalTrials.gov Identifier: NCT01000701). Plasma LDL levels were quantified at baseline and LDL was chromatographically resolved into 5 subfractions (L1-L5), with the L1/L5 ratio serving as a proxy for overall LDL electronegativity. By employing least-squares ordinary regression models determinants of plasma L1, L5, and the L1/5 ratio were studied, and the association with mortality of both LDL levels and its electronegativity were estimated using weighted Cox regression models.
Results
Cases and controls showed similar lipid profiles, but distinct LDL electronegativity, demonstrated by an increase in the L1/L5 ratio in cases vs. controls (P<0.05; Fig. 1). The highest-ranked determinants of the L1/L5 ratio were total cholesterol, LDL, high-density lipoprotein, age and triglycerides. Higher L1/L5 ratios were associated with increased risk all-cause and cardiovascular death at both 30-day (adjusted [adj.] hazard ratio [HR], 2.35, 95% confidence interval [CI], 1.81–3.03, and 2.37, 95% CI, 1.83–3.07, per standard-deviation [SD] increase) and 1-year intervals (adj. HR, 1.88, 95% CI 1.43–2.46, and 1.81, 95% CI 1.36–2.42 per SD increase). In contrast, LDL levels were not associated with these outcomes, neither at 30-day (adj. HR, 1.20, 95% CI, 0.64–2.24, and 1.20, 95% CI, 0.64–2.56 per SD increase) nor 1-year intervals (adj. HR, 1.35, 95% CI, 0.69–2.63, and 1.25, 95% CI 0.56–2.78 per SD increase). These associations were independent of age, sex, cardiometabolic risk factors and baseline risk, as assessed by the updated GRACE score. When compared with established risk factors (hsTnT levels, BMI, Killip class, eGFR, LDL levels), the L1/L5 ratio superseded several risk factors as an independent predictor for fatal events following ACS (Fig. 2).
Conclusions
In contemporary patients with ACS, LDL electronegativity independently predicts fatal events after the acute event, while LDL levels do not. Our results suggest that LDL quality rather than quantity provides predictive utility for premature death within 1 year after the index ACS.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Swiss National Science FoundationSwiss Heart FoundationTheodor-Ida Herzog StiftungFoundation for Cardiovascular Research – Zurich Heart House
Collapse
Affiliation(s)
- S Kraler
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
| | - F A Wenzl
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
| | - M Y Shen
- China Medical University, Graduate Institute of Biomedical Sciences , Taichung , Taiwan
| | | | - L Raeber
- Bern University Hospital, Inselspital , Bern , Switzerland
| | - F Mach
- University Hospital of Geneva , Geneva , Switzerland
| | - D Nanchen
- Centre for Primary Care and Public Health (Unisante) , Lausanne , Switzerland
| | - C Matter
- University Hospital Zurich , Zurich , Switzerland
| | - B Gencer
- University of Bern, Institute of Primary Health Care (BIHAM) , Bern , Switzerland
| | - G G Camici
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
| | - C H Chen
- Texas Heart Institute , Houston , United States of America
| | - A Akhmedov
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
| | - T F Luescher
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
| |
Collapse
|
8
|
Chen YC, Fingerhut A, Tsai YY, Chang SC, Ke TW, Shen MY, Tzu-Liang Chen W. Laparoscopic Reintervention for Intraperitoneal Leaks After Colonic Surgery: Do We Need a Routine Stoma? Surg Innov 2022; 29:697-704. [PMID: 35227152 DOI: 10.1177/15533506211070177] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
INTRODUCTION No universal consensus exists on the management of intraperitoneal anastomosis leakage after colonic surgery. The aim of the study was to evaluate the outcomes of laparoscopic reintervention without stoma creation for intraperitoneal leaks after colonic surgery. MATERIAL AND METHODS Single tertiary center study conducted from January 2010 to December 2020. 54 patients with intraperitoneal leakage were divided into 2 groups according to whether they received a stoma (n = 37) or not (n = 17) during laparoscopic reintervention. Short term outcome was analyzed. RESULTS Patients in the no stoma group had lower American Society of Anesthesiologists (ASA) score (P = .009), lower Acute Physiology And Chronic Health Evaluation II (APACHE II) score (5 vs. 10; P < .001) compared with the stoma group. Intensive care unit admission (43.2% vs. 5.8%; P = .006) and major complications (35.1% vs. 5.8%; P = .015) occurred more in the stoma group compared to the no stoma group. After multivariate logistic regression analysis, initial surgical procedure (P = .001) and APACHE II score (P = .039) were significant predictors of no stoma. The APACHE II score(P = .035) was an independent predictor of major complications. Finally, Receiver Operating Characteristic curve analysis showed that the cutoff value of APACHE II score for no stoma was 7.5. CONCLUSIONS In our study, APACHE II score was an independent predictor of stoma formation and the cutoff value of APACHE II score for no stoma was 7.5. Our results need to be confirmed by larger and randomized studies. In particular, a specific APACHE II threshold to omit a stoma in this setting remains to be determined.
Collapse
Affiliation(s)
- Yi-Chang Chen
- Attending Surgeon, Department of Colorectal Surgery, RinggoldID:%2038020China Medical University Hospital, Taichung, Taiwan
| | - Abe Fingerhut
- Associate professor Surgical Research Unit, Department of Surgery, Medical University of Graz, and Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Minimally Invasive Surgery Center, Poissy, France
| | - Yuan-Yao Tsai
- Attending Surgeon, Department of Colorectal Surgery, RinggoldID:%2038020China Medical University Hospital, Taichung, Taiwan
| | - Sheng-Chi Chang
- Attending Surgeon, Department of Colorectal Surgery, RinggoldID:%2038020China Medical University Hospital, Taichung, Taiwan
| | - Tao-Wei Ke
- Attending Surgeon, Department of Colorectal Surgery, RinggoldID:%2038020China Medical University Hospital, Taichung, Taiwan
| | - Ming-Yin Shen
- Director, Department of Colorectal Surgery, RinggoldID:%2038020China Medical University Hospital, Taiwan, China
| | | |
Collapse
|
9
|
Meng XN, Shen MY, Shen T, Han CM. [Nursing care of one patient with neuromyelitis optica spectrum disorders complicated with pressure ulcers]. Zhonghua Shao Shang Za Zhi 2020; 36:610-611. [PMID: 32842413 DOI: 10.3760/cma.j.cn501120-20190416-00190] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
On February 11, 2019, a 37-year-old female patient with neuromyelitis optica spectrum disorders was admitted to the Second Affiliated Hospital of Zhejiang University School of Medicine, and her acute osteomyelitis was caused by infection of multiple pressure ulcer wounds with Staphylococcus aureus. The patient was diagnosed and treated with multidisciplinary cooperation. The nurses focused on the strict observation of the syndrome of neuromyelitis optica spectrum disorders during hormone reduction therapy, guarded against the rebound of condition, implemented wound care in stages according to the diagnosis and treatment plan, maintained effective drainage, ensured appropriate negative pressure, and strengthened nutrition to promote wound healing. After active treatment and careful nursing care, the patient recovered and was discharged on the 39th day after admission.
Collapse
Affiliation(s)
- X N Meng
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - M Y Shen
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - T Shen
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - C M Han
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| |
Collapse
|
10
|
Lu FC, Shen MY, Shen T, Chen HQ, Fu YH, Han CM. [Evidence summary for postoperative hypothermia rewarming in adults with severe burns]. Zhonghua Shao Shang Za Zhi 2020; 36:582-586. [PMID: 32842404 DOI: 10.3760/cma.j.cn501120-20190402-00158] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To retrieve, evaluate, and summarize the best evidence for postoperative hypothermia rewarming in adults with severe burns. Methods: Foreign language databases including Cochrane Library, Joanna Briggs Institute Evidence-Based Health Care Center Database, PubMed, Ovid-Medline, BMJ Best Practice, and Web of Science were retrieved with the search terms of " severe burn/major burn/severe degree burn" , " hypothermia/warming intervention/hypothermia/temperature/body temperature change" , and " postoperative /perioperative/peri-operative/post-operative" and Chinese databases including Chinese Journal Full-Text Database, Wanfang Database, and VIP Database were retrieved with the search terms of "//" , "/" , and "" to obtain all the publicly published evidence for postoperative hypothermia rewarming in adults with severe burns from the establishment of each database to April 2018, including systematic evaluations, guidelines, expert consensus, evidence summary, and original research closely related to the evidence. The literatures were screened and evaluated for their quality, the evidences were extracted from them, evaluated, classified in order to summarize the best evidences. Results: A total of 8 literatures were included, including one systematic evaluation, three guidelines, one expert consensus, and three evidence summaries. Finally, the best evidences in 8 aspects including the body temperature monitoring site, body temperature monitoring frequency, surface heating, in vivo heating, rewarming start, multi-strategy rewarming, equipment, and personnel training were summarized. Conclusions: Based in the evidence-based nursing method, this study retrieves and evaluates the literature, summarizes the evidence analysis and evaluation, and obtains the best evidences of postoperative hypothermia rewarming in adult patients with severe burns, which provides a strong reference for the clinical implementation of rewarming.
Collapse
Affiliation(s)
- F C Lu
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - M Y Shen
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - T Shen
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - H Q Chen
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Y H Fu
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - C M Han
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| |
Collapse
|
11
|
Jiang B, Shen MY, Shen T. [Nursing of one patient with extremely severe burn-blast combined injury complicated with acute kidney injury caused by dust explosion]. Zhonghua Shao Shang Za Zhi 2020; 36:603-605. [PMID: 32842410 DOI: 10.3760/cma.j.cn501120-20190415-00188] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
On January 31, 2018, a 21-year-old male patient with extremely severe burn-blast combined injury complicated with acute kidney injury caused by dust explosion of crospovidone was admitted to the Second Affiliated Hospital of Zhejiang University School of Medicine. The following nursing measures were carried out, aiming at the condition of the patient. We strengthened the management of fluid intake and output volume, prevented hypothermia and unplanned disembarkation during the period of continuous renal replacement therapy with burn shock and acute kidney injury. For traumatic pneumothorax, we took a good care of the closed chest drainage tube and implemented a ventilation strategy of low tide and low positive end expiratory pressure. During the infection with carbapenem-resistant Klebsiella pneumoniae, the environmental disinfection of the care unit was optimized and polymyxin B drug care was done. After 71 days of comprehensive treatment and nursing care, the patient recovered and was discharged from hospital. This case suggests that, in view of the renal function and lung function of patients with extremely severe burn-blast combined injury, individualized treatment and nursing measures are helpful to improve the cure rate and prognosis.
Collapse
Affiliation(s)
- B Jiang
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - M Y Shen
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - T Shen
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| |
Collapse
|
12
|
Chen HQ, Shen MY, Shao HW, Han CM. [Practice of nosocomial infection management in burn department based on the American hospital evaluation standard of the Joint Commission International]. Zhonghua Shao Shang Za Zhi 2020; 36:488-492. [PMID: 32594709 DOI: 10.3760/cma.j.cn501120-20190206-00020] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective: To explore the role of continuous quality improvement measures based on the American hospital evaluation standard of the Joint Commission International (JCI) in prevention and control of nosocomial infection in Burn Department of the Second Affiliated Hospital of Zhejiang University School of Medicine (hereinafter referred to as the author' s department). Methods: From 2013 to 2018, based on 11 JCI standards related to infection prevention and control and the current situation of the author' s department, more than 50 doctors, nurses, and nursing assistants from the author' s department participated in continuous improvement of the three-level management system of nosocomial infection in the author' s department, focusing on implementing of management of patient with multidrug resistant bacteria infection, optimizing the infection control management of instrument and cloth, and implementing target management on 5 indicators such as hand hygiene implementation rate, and carrying out inspection, quality management, and improvement on 11 items of prevention and control of nosocomial infection. The implementation rate of hand hygiene from 2013 to 2018 and the accuracy rate of hand hygiene from 2016 to 2018 of medical staff in the author' s department, and incidences of catheter-related bloodstream infection (CRBSI) of central venous, catheter-associated urinary tract infection (CAUTI), and ventilator associated pneumonia (VAP) of burn intensive care unit in the author's department from 2013 to 2018 were monitored.The following 7 indicators were monitored from 2013 to 2018, including false negative rate of nosocomial infection, incidence of hyperglycemia during intensive insulin treatment for severely burned patients, the implementation rate of CRBSI preventive measures, the specification rate of surface fixation of indwelling catheter, the implementation rate of VAP preventive measures, the accuracy rate of bed temperature during the use of suspended bed, and the implementation rate of hand hygiene of standardized training medical staff in the author' s department before and after improvement. Data were statistically analyzed with chi-square test. Results: The implementation rate of hand hygiene of medical staff in the author' s department was 88.0%-89.5% from 2013 to 2018, the correct rate of hand hygiene of medical staff in the author' s department was 95.10%-97.35%, and both reached the target values. The incidences of CRBSI in 2015, VAP in 2017, and CAUTI in 2013, 2014, and 2017 of burn intensive care unit failed to reach the respective target value and reached the respective target value after quality improvement, and the above-mentioned 3 indicators reached the respective target value in other years. From 2013 to 2018, the false negative rate of nosocomial infection and the incidence of hyperglycemia during intensive insulin treatment of severely burned patients in the author' s department after improvement were significantly lower than those before improvement (χ(2)=24.50, 4.74, P<0.05 or P<0.01), the implementation rate of CRBSI preventive measures, the specification rate of surface fixation of indwelling catheter, the implementation rate of VAP preventive measures, and the accuracy rate of bed temperature during the use of suspended bed after improvement in the author' s department were significantly higher than those before improvement (χ(2)=13.78, 6.50, 20.37, 13.92, P<0.05 or P<0.01), and the implementation rate of hand hygiene of standardized training medical staff in the author' s department after improvement was similar to that before improvement (χ(2)=1.71, P>0.05). Conclusions: The introduction of JCI standard can improve the implementation rate and accuracy rate of hand hygiene of medical staff in burn department, reduce the incidences of CRBSI, CAUTI, and VAP, and improve the effect of prevention and control of nosocomial infection in burn department.
Collapse
Affiliation(s)
- H Q Chen
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - M Y Shen
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - H W Shao
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - C M Han
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| |
Collapse
|
13
|
Shen MY, Chang SH, Liu TI, Lu TY, Sabu A, Chen HH, Chiu HC. Combo-targeted nanoassemblies as a chemotherapy delivery system against peritoneal carcinomatosis colorectal cancer. Biomater Sci 2020; 8:3885-3895. [PMID: 32539060 DOI: 10.1039/d0bm00583e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Peritoneal carcinomatosis colorectal cancer (pcCRC) is one of the most challenging cases in clinical treatment due to its aggressive characteristics and diagnostic limitations, impeding the therapeutic efficacy of chemotherapy. In this study, a poly(lactic-co-glycolic acid) nanoparticle (NP)-based drug delivery system capable of encapsulating the chemodrug SN38 and enhancing drug accumulation in metastatic tumors was developed for the treatment of pcCRC. The SN38-loaded NPs with a diameter of ca. 160 nm were decorated with N-acetyl histidine-modified d-α-tocopheryl polyethylene glycol succinate (TPGS) and folate-TPGS on their surfaces for enhancing drug accumulation through surface charge conversion in a mildly acidic tumor microenvironment and further allowing the NPs to selectively target the folate receptor-overexpressed colon cancer cells. This hierarchically targeted drug delivery strategy improved not only the highly enhanced cellular uptake of drug-loaded NPs, but also the prominent anticancer effect against CT26 cancer cells in vitro. In vivo studies demonstrated the sound tumor inhibition of the SN38-loaded NPs in terms of large reductions in both tumor size and nodule number and prolongation of the survival time of pcCRC-bearing mice, indicating their high therapeutic potential for the practical treatment of pcCRC.
Collapse
Affiliation(s)
- Ming-Yin Shen
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan.
| | | | | | | | | | | | | |
Collapse
|
14
|
Liu TI, Lu TY, Chang SH, Shen MY, Chiu HC. Dual stimuli-guided lipid-based delivery system of cancer combination therapy. J Control Release 2020; 318:16-24. [DOI: 10.1016/j.jconrel.2019.12.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/25/2019] [Accepted: 12/03/2019] [Indexed: 12/18/2022]
|
15
|
Guan X, Liu Z, Parvaiz A, Longo A, Saklani A, Shafik AA, Cai JC, Ternent C, Chen L, Kayaalp C, Sumer F, Nogueira F, Gao F, Han FH, He QS, Chun HK, Huang CM, Huang HY, Huang R, Jiang ZW, Khan JS, da JM, Pereira C, Nunoo-Mensah JW, Son JT, Kang L, Uehara K, Lan P, Li LP, Liang H, Liu BR, Liu J, Ma D, Shen MY, Islam MR, Samalavicius NE, Pan K, Tsarkov P, Qin XY, Escalante R, Efetov S, Jeong SK, Lee SH, Sun DH, Sun L, Garmanova T, Tian YT, Wang GY, Wang GJ, Wang GR, Wang XQ, Chen WTL, Yong Lee W, Yan S, Yang ZL, Yu G, Yu PW, Zhao D, Zhong YS, Wang JP, Wang XS. International consensus on natural orifice specimen extraction surgery (NOSES) for gastric cancer (2019). Gastroenterol Rep (Oxf) 2020; 8:5-10. [PMID: 32104581 PMCID: PMC7034234 DOI: 10.1093/gastro/goz067] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 11/16/2019] [Accepted: 11/21/2019] [Indexed: 02/06/2023] Open
Abstract
At present, natural orifice specimen extraction surgery (NOSES) has attracted more and more attention worldwide, because of its great advantages including minimal cutaneous trauma and post-operative pain, fast post-operative recovery, short hospital stay, and positive psychological impact. However, NOSES for the treatment of gastric cancer (GC) is still in its infancy, and there is great potential to improve its theoretical system and clinical practice. Especially, several key points including oncological outcomes, bacteriological concerns, indication selection, and standardized surgical procedures are raised with this innovative technique. Therefore, it is necessary to achieve an international consensus to regulate the implementation of GC-NOSES, which is of great significance for healthy and orderly development of NOSES worldwide.
Collapse
Affiliation(s)
- Xu Guan
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | - Zheng Liu
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | | | - Antonio Longo
- European Center of Coloproctology and Pelvic Diseases-Multimedica Hospital, Milan, Italy
| | - Avanish Saklani
- Department of GI Surgical Oncology, Tata Memorial Hospital, Mumbai, India
| | - Ali A Shafik
- Department of Colorectal Surgery, Cairo University, Cairo, Egypt
| | - Jian-Chun Cai
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, Xiamen, Fujian, P. R. China
| | - Charles Ternent
- Section of Colon and Rectal Surgery, Creighton University School of Medicine, Omaha, NE, USA
| | - Lin Chen
- Department of General Surgery, Chinese People's Liberation Army General Hospital, Beijing, P. R. China
| | - Cuneyt Kayaalp
- Department of Gastrointestinal Surgery, Inonu University, Malatya, Turkey
| | - Fatih Sumer
- Department of Gastrointestinal Surgery, Inonu University, Malatya, Turkey
| | | | - Feng Gao
- Department of Colorectal Cancer Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P. R. China
| | - Fang-Hai Han
- Department of Gastroenterological Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Qing-Si He
- Department of General Surgery, Shandong University Qilu Hospital, Jinan, Shandong, P. R. China
| | - Ho-Kyung Chun
- Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Chang-Ming Huang
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, P. R. China
| | - Hai-Yang Huang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | - Rui Huang
- Department of Colorectal Cancer Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P. R. China
| | - Zhi-Wei Jiang
- Department of General Surgery, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, P. R. China
| | - Jim S Khan
- Department of Colorectal Surgery, Portsmouth, Hospitals NHS, Trust, Queen Alexandra Hospital, Portsmouth, UK
| | - Joaquim Manuel da
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China.,Poole Hospital NHS Trust, Poole, UK.,European Center of Coloproctology and Pelvic Diseases-Multimedica Hospital, Milan, Italy.,Department of GI Surgical Oncology, Tata Memorial Hospital, Mumbai, India.,Department of Colorectal Surgery, Cairo University, Cairo, Egypt.,Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, Xiamen, Fujian, P. R. China.,Section of Colon and Rectal Surgery, Creighton University School of Medicine, Omaha, NE, USA.,Department of General Surgery, Chinese People's Liberation Army General Hospital, Beijing, P. R. China.,Department of Gastrointestinal Surgery, Inonu University, Malatya, Turkey.,Department of Surgery, Hospital de Braga, Braga, Portugal.,Department of Colorectal Cancer Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P. R. China.,Department of Gastroenterological Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P. R. China.,Department of General Surgery, Shandong University Qilu Hospital, Jinan, Shandong, P. R. China.,Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, P. R. China.,Department of General Surgery, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, P. R. China.,Department of Colorectal Surgery, Portsmouth, Hospitals NHS, Trust, Queen Alexandra Hospital, Portsmouth, UK.,King's College Hospital, London, UK.,Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China.,Division of Surgical Oncology, Department of Surgery, Nagoya University School of Medicine, Nagoya, Japan.,Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, P. R. China.,Department of Gastric Cancer, Tianjin Medical University Cancer Institute & Hospital, Tianjin, P. R. China.,Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P. R. China.,Department of Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P. R. China.,Department of General Surgery, Xinqiao, Hospital, Third Military Medical University, Chongqing, P. R. China.,Department of Surgery, China Medical University Hospital, Taichung, Taiwan, China.,Department of Surgery, Shaheed Suhrawardy Medical College, Dhaka, Bangladesh.,Department of Surgery, Klaipeda University Hospital, Klaipeda, Lithuania.,Department of Gastrointestinal Surgery, Shenzhen People's Hospital & Second Clinical Medical College of Jinan University, Shenzhen, Guangdong, P. R. China.,Clinic of Colorectal and Minimally Invasive Surgery, Sechenov First Moscow State Medical University, Moscow, Russia.,Department of General Surgery, Zhongshan, Hospital, Fudan University, Shanghai, P. R. China.,Universidad Central de Venezuela, Centro, Medico Loira, Caracas, Venezuela.,Colorectal Surgery Department, Sechenov First Moscow State Medical University, Moscow, Russia.,Department of Surgery, Yang Hospital, Seoul, South Korea.,Department of Surgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, South Korea.,Department of Gastric and Colorectal Surgery, Jilin University First Hospital, Changchun, Jilin, P. R. China.,Department of Gynecologic Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China.,Department of Pancreatic and Gastric Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China.,Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P. R. China.,Department of General Surgery, Shanxi, Provincial, People's, Hospital, The, Third Affiliated, Hospital, Medical College, Xi'an Jiao Tong University, Xi'an, Shaanxi, P. R. China.,Department of surgery, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea.,Department of Gastrointestinal Surgery, Qinghai University Affiliated Hospital, Xining, Qinghai, P. R. China.,Department of Gastrointestinal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China.,Department of General Surgery, Qilu Hospital of Shandong University (Qingdao), Qingdao, Shandong, P. R. China.,Department of General Surgery, Center of Minimal Invasive Gastrointestinal Surgery, Southwest, Hospital, Army Medical University (Third Military Medical University), Chongqing, P. R. China.,Endoscopy Center and Endoscopy Research Institute, Zhongshan, Hospital, Fudan University, Shanghai, P. R. China
| | - Costa Pereira
- Department of Surgery, Hospital de Braga, Braga, Portugal
| | | | - Jung Tack Son
- Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Liang Kang
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Keisuke Uehara
- Division of Surgical Oncology, Department of Surgery, Nagoya University School of Medicine, Nagoya, Japan
| | - Ping Lan
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Le-Ping Li
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, P. R. China
| | - Han Liang
- Department of Gastric Cancer, Tianjin Medical University Cancer Institute & Hospital, Tianjin, P. R. China
| | - Bing-Rong Liu
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P. R. China
| | - Juan Liu
- Department of Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P. R. China
| | - Dan Ma
- Department of General Surgery, Xinqiao, Hospital, Third Military Medical University, Chongqing, P. R. China
| | - Ming-Yin Shen
- Department of Surgery, China Medical University Hospital, Taichung, Taiwan, China
| | | | | | - Kai Pan
- Department of Gastrointestinal Surgery, Shenzhen People's Hospital & Second Clinical Medical College of Jinan University, Shenzhen, Guangdong, P. R. China
| | - Petr Tsarkov
- Clinic of Colorectal and Minimally Invasive Surgery, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Xin-Yu Qin
- Department of General Surgery, Zhongshan, Hospital, Fudan University, Shanghai, P. R. China
| | - Ricardo Escalante
- Universidad Central de Venezuela, Centro, Medico Loira, Caracas, Venezuela
| | - Sergey Efetov
- Colorectal Surgery Department, Sechenov First Moscow State Medical University, Moscow, Russia
| | | | - Suk-Hwan Lee
- Department of Surgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, South Korea
| | - Dong-Hui Sun
- Department of Gastric and Colorectal Surgery, Jilin University First Hospital, Changchun, Jilin, P. R. China
| | - Li Sun
- Department of Gynecologic Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | - Tatiana Garmanova
- Clinic of Colorectal and Minimally Invasive Surgery, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Yan-Tao Tian
- Department of Pancreatic and Gastric Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | - Gui-Yu Wang
- Department of Colorectal Cancer Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P. R. China
| | - Guo-Jun Wang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P. R. China
| | - Guo-Rong Wang
- Department of General Surgery, Shanxi, Provincial, People's, Hospital, The, Third Affiliated, Hospital, Medical College, Xi'an Jiao Tong University, Xi'an, Shaanxi, P. R. China
| | - Xiao-Qiang Wang
- Department of General Surgery, Shanxi, Provincial, People's, Hospital, The, Third Affiliated, Hospital, Medical College, Xi'an Jiao Tong University, Xi'an, Shaanxi, P. R. China
| | | | - Woo Yong Lee
- Department of surgery, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
| | - Su Yan
- Department of Gastrointestinal Surgery, Qinghai University Affiliated Hospital, Xining, Qinghai, P. R. China
| | - Zu-Li Yang
- Department of Gastrointestinal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Gang Yu
- Department of General Surgery, Qilu Hospital of Shandong University (Qingdao), Qingdao, Shandong, P. R. China
| | - Pei-Wu Yu
- Department of General Surgery, Center of Minimal Invasive Gastrointestinal Surgery, Southwest, Hospital, Army Medical University (Third Military Medical University), Chongqing, P. R. China
| | - Dan Zhao
- Department of Gynecologic Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | - Yun-Shi Zhong
- Endoscopy Center and Endoscopy Research Institute, Zhongshan, Hospital, Fudan University, Shanghai, P. R. China
| | - Jian-Ping Wang
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Xi-Shan Wang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| |
Collapse
|
16
|
Xu T, Shen MY, Wang XG, Qu CD, Lu FC. [Treatment and nursing of one patient with burns on perineal region and complicated by secondary multiple organ injuries by exposing to paraquat fluid]. Zhonghua Shao Shang Za Zhi 2019; 35:546-547. [PMID: 31357828 DOI: 10.3760/cma.j.issn.1009-2587.2019.07.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
On March 18, 2016, one 53 years old man with burns on perineal region and complicated by secondary multiple organ injuries by exposing to paraquat fluid was admitted to our department. Comprehensive treatment measures including protective mechanical ventilation, intensive care, vacuum sealing drainage, anti-infection, and organ protection were conducted sequentially. Through 33 days of comprehensive treatment and nursing, the patient's condition substantially improved and he left hospital. This case presents that paraquat fluid absorption through skin and mucosa can also lead to severe systemic poisoning, and multiple organ protection is the key to improve the prognosis of this patient.
Collapse
Affiliation(s)
- T Xu
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | | | | | | | | |
Collapse
|
17
|
Shen MY, Liu TI, Yu TW, Kv R, Chiang WH, Tsai YC, Chen HH, Lin SC, Chiu HC. Hierarchically targetable polysaccharide-coated solid lipid nanoparticles as an oral chemo/thermotherapy delivery system for local treatment of colon cancer. Biomaterials 2019; 197:86-100. [DOI: 10.1016/j.biomaterials.2019.01.019] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 01/08/2019] [Accepted: 01/08/2019] [Indexed: 02/06/2023]
|
18
|
Guan X, Liu Z, Longo A, Cai JC, Tzu-Liang Chen W, Chen LC, Chun HK, Manuel da Costa Pereira J, Efetov S, Escalante R, He QS, Hu JH, Kayaalp C, Kim SH, Khan JS, Kuo LJ, Nishimura A, Nogueira F, Okuda J, Saklani A, Shafik AA, Shen MY, Son JT, Song JM, Sun DH, Uehara K, Wang GY, Wei Y, Xiong ZG, Yao HL, Yu G, Yu SJ, Zhou HT, Lee SH, Tsarkov PV, Fu CG, Wang XS. International consensus on natural orifice specimen extraction surgery (NOSES) for colorectal cancer. Gastroenterol Rep (Oxf) 2019; 7:24-31. [PMID: 30792863 PMCID: PMC6375350 DOI: 10.1093/gastro/goy055] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 12/26/2018] [Indexed: 12/19/2022] Open
Abstract
In recent years, natural orifice specimen extraction surgery (NOSES) in the treatment of colorectal cancer has attracted widespread attention. The potential benefits of NOSES including reduction in postoperative pain and wound complications, less use of postoperative analgesic, faster recovery of bowel function, shorter length of hospital stay, better cosmetic and psychological effect have been described in colorectal surgery. Despite significant decrease in surgical trauma of NOSES have been observed, the potential pitfalls of this technique have been demonstrated. Particularly, several issues including bacteriological concerns, oncological outcomes and patient selection are raised with this new technique. Therefore, it is urgent and necessary to reach a consensus as an industry guideline to standardize the implementation of NOSES in colorectal surgery. After three rounds of discussion by all members of the International Alliance of NOSES, the consensus is finally completed, which is also of great significance to the long-term progress of NOSES worldwide.
Collapse
Affiliation(s)
- Xu Guan
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Bejing, China
| | - Zheng Liu
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Bejing, China
| | - Antonio Longo
- Department of Coloproctology and Pelvic Diseases, Humanitas Gavazzeni, Bergamo, Italy
| | - Jian-Chun Cai
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, Xiamen, China
| | | | - Lu-Chuan Chen
- Department of Abdominal Surgery, Fujian Medical University Cancer Hospital, Fuzhou, China
| | - Ho-Kyung Chun
- Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | | | - Sergey Efetov
- Colorectal Surgery Department, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Ricardo Escalante
- Universidad Central de Venezuela, Centro Medico Loira, Caracas, Venezuela
| | - Qing-Si He
- Department of General Surgery, Shandong University Qilu Hospital, Jinan, China
| | - Jun-Hong Hu
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Cuneyt Kayaalp
- Department of Gastrointestinal Surgery, Inonu University, Malatya, Turkey
| | - Seon-Hahn Kim
- Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, Seoul, South Korea
| | - Jim S Khan
- Department of Colorectal Surgery, Portsmouth Hospitals NHS Trust, Queen Alexandra Hospital, Portsmouth, UK
| | - Li-Jen Kuo
- Division of Colorectal Surgery, Taipei Medical University Hospital, Taipei, Taiwan, China
| | - Atsushi Nishimura
- Department of Surgery, Nagaka Chuo General Hospital, Nagaoka City, Japan
| | | | - Junji Okuda
- Innovation Unit / Colorectal Cancer, Osaka Medical College Hospital Cancer Center, Osaka, Japan
| | - Avanish Saklani
- Department of GI Surgical Oncology, Tata Memorial Hospital, Mumbai, India
| | - Ali A Shafik
- Department of Colorectal Surgery, Cairo University, Cairo, Egypt
| | - Ming-Yin Shen
- Department of Surgery, China Medical University Hospital, Taichung, Taiwan, China
| | - Jung-Tack Son
- Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Jun-Min Song
- Department of Anorectal Surgery, First Affiliated Hospital, Zhengzhou University, Zhengzhou, China
| | - Dong-Hui Sun
- Department of Gastric and Colorectal Surgery, Jilin University First Hospital, Changchun, China
| | - Keisuke Uehara
- Division of Surgical Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Gui-Yu Wang
- Department of Colorectal Cancer Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Ye Wei
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhi-Guo Xiong
- Department of Gastrointestinal Surgery, Hubei Provincial Cancer Hospital, Wuhan, China
| | - Hong-Liang Yao
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Gang Yu
- Department of Surgery, People's Hospital of Linzi District, Affiliated to Binzhou Medical College, Zibo, China
| | - Shao-Jun Yu
- Department of Surgical Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hai-Tao Zhou
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Bejing, China
| | - Suk-Hwan Lee
- Department of Surgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, South Korea
| | - Petr V Tsarkov
- Clinic of Colorectal and Minimally Invasive Surgery, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Chuan-Gang Fu
- Department of Gastrointestinal Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xi-Shan Wang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Bejing, China
| | | |
Collapse
|
19
|
Tsai YC, Vijayaraghavan P, Chiang WH, Chen HH, Liu TI, Shen MY, Omoto A, Kamimura M, Soga K, Chiu HC. Targeted Delivery of Functionalized Upconversion Nanoparticles for Externally Triggered Photothermal/Photodynamic Therapies of Brain Glioblastoma. Am J Cancer Res 2018; 8:1435-1448. [PMID: 29507632 PMCID: PMC5835948 DOI: 10.7150/thno.22482] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 12/05/2017] [Indexed: 12/15/2022] Open
Abstract
Therapeutic efficacy of glioblastoma multiforme (GBM) is often severely limited by poor penetration of therapeutics through blood-brain barrier (BBB) into brain tissues and lack of tumor targeting. In this regard, a functionalized upconversion nanoparticle (UCNP)-based delivery system which can target brain tumor and convert deep tissue-penetrating near-infrared (NIR) light into visible light for precise phototherapies on brain tumor was developed in this work. Methods: The UCNP-based phototherapy delivery system was acquired by assembly of oleic acid-coated UCNPs with angiopep-2/cholesterol-conjugated poly(ethylene glycol) and the hydrophobic photosensitizers. The hybrid nanoparticles (ANG-IMNPs) were characterized by DLS, TEM, UV/vis and fluorescence spectrophotometer. Cellular uptake was examined by laser scanning confocal microscopy and flow cytometry. The PDT/PTT effect of ANG-IMNPs was evaluated using MTT assay. Tumor accumulation of NPs was determined by a non-invasive in vivo imaging system (IVIS). The in vivo anti-glioma effect of ANG-IMNPs was evaluated by immunohistochemical (IHC) examination of tumor tissues and Kaplan-Meier survival analysis. Results: In vitro data demonstrated enhanced uptake of ANG-IMNPs by murine astrocytoma cells (ALTS1C1) and pronounced cytotoxicity by combined NIR-triggered PDT and PTT. In consistence with the increased penetration of ANG-IMNPs through endothelial monolayer in vitro, the NPs have also shown significantly enhanced accumulation at brain tumor by IVIS. The IHC tissue examination confirmed prominent apoptotic and necrotic effects on tumor cells in mice receiving targeted dual photo-based therapies, which also led to enhanced median survival (24 days) as compared to the NP treatment without angiopep-2 (14 days). Conclusion: In vitro and in vivo data strongly indicate that the ANG-IMNPs were capable of selectively delivering dual photosensitizers to brain astrocytoma tumors for effective PDT/PTT in conjugation with a substantially improved median survival. The therapeutic efficacy of ANG-IMNPs demonstrated in this study suggests their potential in overcoming BBB and establishing an effective treatment against GBM.
Collapse
|
20
|
Huang WC, Shen MY, Chen HH, Lin SC, Chiang WH, Wu PH, Chang CW, Chiang CS, Chiu HC. Monocytic delivery of therapeutic oxygen bubbles for dual-modality treatment of tumor hypoxia. J Control Release 2015; 220:738-50. [DOI: 10.1016/j.jconrel.2015.09.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 08/31/2015] [Accepted: 09/09/2015] [Indexed: 01/24/2023]
|
21
|
Chen HH, Huang WC, Chiang WH, Liu TI, Shen MY, Hsu YH, Lin SC, Chiu HC. pH-Responsive therapeutic solid lipid nanoparticles for reducing P-glycoprotein-mediated drug efflux of multidrug resistant cancer cells. Int J Nanomedicine 2015; 10:5035-48. [PMID: 26346762 PMCID: PMC4531030 DOI: 10.2147/ijn.s86053] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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] [Indexed: 01/02/2023] Open
Abstract
In this study, a novel pH-responsive cholesterol-PEG adduct-coated solid lipid nanoparticles (C-PEG-SLNs) carrying doxorubicin (DOX) capable of overcoming multidrug resistance (MDR) breast cancer cells is presented. The DOX-loaded SLNs have a mean hydrodynamic diameter of ~100 nm and a low polydispersity index (under 0.20) with a high drug-loading efficiency ranging from 80.8% to 90.6%. The in vitro drug release profiles show that the DOX-loaded SLNs exhibit a pH-controlled drug release behavior with the maximum and minimum unloading percentages of 63.4% at pH 4.7 and 25.2% at pH 7.4, respectively. The DOX-loaded C-PEG-SLNs displayed a superior ability in inhibiting the proliferation of MCF-7/MDR cells. At a DOX concentration of 80 μM, the cell viabilities treated with C-PEG-SLNs were approximately one-third of the group treated with free DOX. The inhibition activity of C-PEG-SLNs could be attributed to the transport of C-PEG to cell membrane, leading to the change of the composition of the cell membrane and thus the inhibition of permeability glycoprotein activity. This hypothesis is supported by the confocal images showing the accumulation of DOX in the nuclei of cancer cells and the localization of C-PEG on the cell membranes. The results of in vivo study further demonstrated that the DOX delivered by the SLNs accumulates predominantly in tumor via enhanced permeability and retention effect, the enhanced passive tumor accumulation due to the loose intercellular junctions of endothelial cells lining inside blood vessels at tumor site, and the lack of lymphatic drainage. The growth of MCF-7/MDR xenografted tumor on Balb/c nude mice was inhibited to ~400 mm3 in volume as compared with the free DOX treatment group, 1,140 mm3, and the group treated with 1,2 distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxy(polyethylene glycol)] solid lipid nanoparticles, 820 mm3. Analysis of the body weight of nude mice and the histology of organs and tumor after the administration of DOX-loaded SLNs show that the SLNs have no observable side effects. These results indicate that the C-PEG-SLN is a promising platform for the delivery of therapeutic agents for MDR cancer chemotherapy.
Collapse
Affiliation(s)
- Hsin-Hung Chen
- Department of Chemical Engineering, National Chung Hsing University, Taichung, Taiwan
| | - Wen-Chia Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Wen-Hsuan Chiang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Te-I Liu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Ming-Yin Shen
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan ; Department of Surgery, National Taiwan University Hospital-Hsinchu Branch, Hsinchu, Taiwan
| | - Yuan-Hung Hsu
- Pharmaceutical Optimization Technology Division, Biomedical Technology and Device Research Laboratory, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Sung-Chyr Lin
- Department of Chemical Engineering, National Chung Hsing University, Taichung, Taiwan
| | - Hsin-Cheng Chiu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| |
Collapse
|
22
|
Liu YA, Chung YC, Shen MY, Pan ST, Kuo CW, Peng SJ, Pasricha PJ, Tang SC. Perivascular Interstitial Cells of Cajal in Human Colon. Cell Mol Gastroenterol Hepatol 2014; 1:102-119. [PMID: 28247865 PMCID: PMC5301165 DOI: 10.1016/j.jcmgh.2014.11.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Accepted: 11/12/2014] [Indexed: 01/24/2023]
Abstract
BACKGROUND & AIMS Interstitial cells of Cajal (ICC) closely associate with nerves and smooth muscles to modulate gut motility. In the ICC microenvironment, although the circulating hormones/factors have been shown to influence ICC activities, the association between ICC and microvessels in the gut wall has not been described. We applied three-dimensional (3D) vascular histology with c-kit staining to identify the perivascular ICC and characterize their morphologic and population features in the human colon wall. METHODS Full-thickness colons were obtained from colectomies performed for colorectal cancer. We targeted the colon wall away from the tumor site. Confocal microscopy with optical clearing (use of immersion solution to reduce scattering in optical imaging) was performed to simultaneously reveal the ICC and vascular networks in space. 3D image rendering and projection were digitally conducted to illustrate the ICC-vessel contact patterns. RESULTS Perivascular ICC were identified in the submucosal border, myenteric plexus, and circular and longitudinal muscles via high-definition 3D microscopy. Through in-depth image projection, we specified two contact patterns-the intimate cell body-to-vessel contact (type I, 18% of ICC in circular muscle) and the long-distance process-to-vessel contact (type II, 16%)-to classify perivascular ICC. Particularly, type I perivascular ICC were detected with elevated c-kit staining levels and were routinely found in clusters, making them readily distinguishable from other ICC in the network. CONCLUSIONS We propose a new subclass of ICC that closely associates with microvessels in the human colon. Our finding suggests a functional relationship between these mural ICC and microvessels based on the morphologic proximity.
Collapse
Key Words
- 3D Histology
- 3D, three-dimensional
- 5-HT, serotonin
- ICC
- ICC, interstitial cells of Cajal
- ICC-CM, ICC in the circular muscle
- ICC-LM, ICC in the longitudinal muscle
- ICC-MY, ICC around the myenteric plexus
- ICC-SM, ICC at the submucosal border
- Mural Cells
- NA, numerical aperture
- PBS, phosphate-buffered saline
- SCF, stem cell factor
- c-kit
Collapse
Affiliation(s)
- Yuan-An Liu
- Connectomics Research Center, National Tsing Hua University, Hsinchu, Taiwan
| | - Yuan-Chiang Chung
- Department of Surgery, Cheng Ching General Hospital, Chung Kang Branch, Taichung, Taiwan
| | - Ming-Yin Shen
- Division of Colorectal Surgery, National Taiwan University Hospital, Hsinchu Branch, Hsinchu, Taiwan
| | - Shien-Tung Pan
- Department of Pathology, Miaoli General Hospital, Miaoli, Taiwan
| | - Chun-Wei Kuo
- Department of Pathology, National Taiwan University Hospital, Hsinchu Branch, Hsinchu, Taiwan
| | - Shih-Jung Peng
- Connectomics Research Center, National Tsing Hua University, Hsinchu, Taiwan
- Department of Medical Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Pankaj J. Pasricha
- Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Shiue-Cheng Tang
- Connectomics Research Center, National Tsing Hua University, Hsinchu, Taiwan
- Department of Medical Science, National Tsing Hua University, Hsinchu, Taiwan
- Correspondence Address correspondence to: Shiue-Cheng Tang, PhD, National Tsing Hua University, Department of Medical Science, 101, Section 2, Kuang Fu Road, Hsinchu 30013, Taiwan. fax: (886) 3-571-5934.
| |
Collapse
|
23
|
Chiang WH, Huang WC, Chang YJ, Shen MY, Chen HH, Chern CS, Chiu HC. Doxorubicin-Loaded Nanogel Assemblies with pH/Thermo-triggered Payload Release for Intracellular Drug Delivery. MACROMOL CHEM PHYS 2014. [DOI: 10.1002/macp.201400145] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wen-Hsuan Chiang
- Department of Biomedical Engineering and Environmental Sciences; National Tsing Hua University; Hsinchu 30013 Taiwan
| | - Wen-Chia Huang
- Department of Biomedical Engineering and Environmental Sciences; National Tsing Hua University; Hsinchu 30013 Taiwan
| | - Yu-Jen Chang
- Department of Biomedical Engineering and Environmental Sciences; National Tsing Hua University; Hsinchu 30013 Taiwan
| | - Ming-Yin Shen
- Department of Biomedical Engineering and Environmental Sciences; National Tsing Hua University; Hsinchu 30013 Taiwan
- Department of Surgery; National Taiwan University Hospital-Hsinchu Branch; Hsinchu 30013 Taiwan
| | - Hsin-Hung Chen
- Department of Chemical Engineering; National Chung Hsing University; Taichung 402 Taiwan
| | - Chorng-Shyan Chern
- Department of Chemical Engineering; National Taiwan University of Science and Technology; Taipei 106 Taiwan
| | - Hsin-Cheng Chiu
- Department of Biomedical Engineering and Environmental Sciences; National Tsing Hua University; Hsinchu 30013 Taiwan
| |
Collapse
|
24
|
Huang YF, Chiang WH, Huang WC, Chen HH, Shen MY, Lin SC, Chern CS, Chiu HC. pH-responsive hierarchical transformation of charged lipid assemblies within polyelectrolyte gel layers with applications for controlled drug release and MR imaging contrast. J Mater Chem B 2014; 2:4988-4992. [DOI: 10.1039/c4tb00771a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Cationic DOTAP assemblies within poly(acrylic acid) gel effectively modulate drug release and MR imaging contrast by pH-induced morphological transformation.
Collapse
Affiliation(s)
- Yi-Fong Huang
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402, Taiwan
| | - Wen-Hsuan Chiang
- Department of Biomedical Engineering and Environmental Sciences
- National Tsing Hua University
- Hsinchu 300, Taiwan
| | - Wen-Chia Huang
- Department of Biomedical Engineering and Environmental Sciences
- National Tsing Hua University
- Hsinchu 300, Taiwan
| | - Hsin-Hung Chen
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402, Taiwan
| | - Ming-Yin Shen
- Department of Biomedical Engineering and Environmental Sciences
- National Tsing Hua University
- Hsinchu 300, Taiwan
- Department of Surgery
- National Taiwan University Hospital-Hsinchu Branch
| | - Sung-Chyr Lin
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402, Taiwan
| | - Chorng-Shyan Chern
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106, Taiwan
| | - Hsin-Cheng Chiu
- Department of Biomedical Engineering and Environmental Sciences
- National Tsing Hua University
- Hsinchu 300, Taiwan
| |
Collapse
|
25
|
Liu YA, Pan ST, Hou YC, Shen MY, Peng SJ, Tang SC, Chung YC. 3-D visualization and quantitation of microvessels in transparent human colorectal carcinoma [corrected]. PLoS One 2013; 8:e81857. [PMID: 24324559 PMCID: PMC3843693 DOI: 10.1371/journal.pone.0081857] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 10/16/2013] [Indexed: 12/13/2022] Open
Abstract
Microscopic analysis of tumor vasculature plays an important role in understanding the progression and malignancy of colorectal carcinoma. However, due to the geometry of blood vessels and their connections, standard microtome-based histology is limited in providing the spatial information of the vascular network with a 3-dimensional (3-D) continuum. To facilitate 3-D tissue analysis, we prepared transparent human colorectal biopsies by optical clearing for in-depth confocal microscopy with CD34 immunohistochemistry. Full-depth colons were obtained from colectomies performed for colorectal carcinoma. Specimens were prepared away from (control) and at the tumor site. Taking advantage of the transparent specimens, we acquired anatomic information up to 200 μm in depth for qualitative and quantitative analyses of the vasculature. Examples are given to illustrate: (1) the association between the tumor microstructure and vasculature in space, including the perivascular cuffs of tumor outgrowth, and (2) the difference between the 2-D and 3-D quantitation of microvessels. We also demonstrate that the optically cleared mucosa can be retrieved after 3-D microscopy to perform the standard microtome-based histology (H&E staining and immunohistochemistry) for systematic integration of the two tissue imaging methods. Overall, we established a new tumor histological approach to integrate 3-D imaging, illustration, and quantitation of human colonic microvessels in normal and cancerous specimens. This approach has significant promise to work with the standard histology to better characterize the tumor microenvironment in colorectal carcinoma.
Collapse
Affiliation(s)
- Yuan-An Liu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Shien-Tung Pan
- Department of Pathology, Miaoli General Hospital, Miaoli, Taiwan
| | - Yung-Chi Hou
- Department of Surgery, National Taiwan University Hospital - Hsinchu, Branch, Hsinchu, Taiwan
| | - Ming-Yin Shen
- Department of Surgery, National Taiwan University Hospital - Hsinchu, Branch, Hsinchu, Taiwan
| | - Shih-Jung Peng
- Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan
| | - Shiue-Cheng Tang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan
- Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan
- Department of Medical Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Yuan-Chiang Chung
- Department of Surgery, National Taiwan University Hospital - Hsinchu, Branch, Hsinchu, Taiwan
- Department of Surgery, Cheng Ching General Hospital, Chung Kang Branch, Taichung, Taiwan
| |
Collapse
|
26
|
Liu YA, Chung YC, Pan ST, Shen MY, Hou YC, Peng SJ, Pasricha PJ, Tang SC. 3-D imaging, illustration, and quantitation of enteric glial network in transparent human colon mucosa. Neurogastroenterol Motil 2013; 25:e324-38. [PMID: 23495930 DOI: 10.1111/nmo.12115] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 02/15/2013] [Indexed: 12/13/2022]
Abstract
BACKGROUND Enteric glia form a network in the intestinal mucosa and have been suggested to engage in multidirectional interactions with the epithelium, blood vessels, nerves, and immune system. However, due to the dispersed nature of the glial network, standard histology cannot provide a global view of the network architecture. We prepared transparent human colon mucosa for three-dimensional (3-D) confocal microscopy with S100B immunostaining to reveal the location-dependent glial network for qualitative and quantitative analyses. METHODS Full-thickness human colons were acquired from colectomies performed for colorectal cancer. We targeted the mucosa away from the tumor site to characterize the glial network morphology. Optical clearing (use of immersion solution to reduce scattering) was applied to generate transparent specimens for deep-tissue microscopy. KEY RESULTS Two features of the glial network were seen: (i) A dense glial population resides at the crypt base/mucosal boundary in contact with the lymphatic vessels, and (ii) from the base, the glial network elongates along the crypt axis with peri-cryptic and peri-vascular connections toward the opening. We quantified the mucosal glia as the S100B-positive cells with at least two processes extending from the cell body. Examples of the global and in-depth imaging of adenoma were given to illustrate the morphological correlation between the loss of glial fibers and the aberrant crypts. CONCLUSIONS & INFERENCES We have established a useful approach for 3-D imaging, panoramic illustration, and quantitation of the enteric glia in the human colon mucosa to help characterize their roles with mucosal components in health and disease.
Collapse
Affiliation(s)
- Y A Liu
- Connectomics Research Center, National Tsing Hua University, Hsinchu, Taiwan
| | | | | | | | | | | | | | | |
Collapse
|
27
|
Chiang WH, Huang WC, Chang CW, Shen MY, Shih ZF, Huang YF, Lin SC, Chiu HC. Functionalized polymersomes with outlayered polyelectrolyte gels for potential tumor-targeted delivery of multimodal therapies and MR imaging. J Control Release 2013; 168:280-8. [PMID: 23562635 DOI: 10.1016/j.jconrel.2013.03.029] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 01/22/2013] [Accepted: 03/10/2013] [Indexed: 10/27/2022]
Abstract
A novel tumor-targeting polymersome carrier system capable of delivering magnetic resonance imaging (MRI) and chemotherapy is presented in this study. The doxorubicin (DOX)-loaded magnetic polymersomes were first attained by the self-assembly of lipid-containing copolymer, poly(acrylic acid-co-distearin acrylate), in aqueous solution containing citric acid-coated superparamagnetic iron oxide nanoparticles (SPIONs), and followed by DOX loading via electrostatic attraction. To further functionalize these artificial vesicles with superior in vivo colloidal stability, pH-tunable drug release and active tumor-targeting, chitosan and poly(γ-glutamic acid-co-γ-glutamyl oxysuccinimide)-g-poly(ethyleneglycol)-folate (FA) were deposited in sequence onto the assembly outer surfaces. The interfacial nanogel layers via complementary electrostatic interactions and in-situ covalent cross-linking were thus produced. These nanogel-caged polymersomes (NCPs) show excellent anti-dilution and serum proteins-repellent behaviors. Triggerable release of the encapsulated DOX was governed by dual external stimuli, pH and temperature. When these theranostic NCPs were effectively internalized by HeLa cells via FA receptor-mediated endocytosis and then exposed to high frequency magnetic fields (HFMF), the combined effects of both pH and magnetic hyperthermia-triggered drug release and thermo-therapy resulted in greater cytotoxicity than the treatment by DOX alone. By virtue of the SPION clustering effect in the assembly inner aqueous compartments, the SPION/DOX-loaded NCPs displayed an r₂ relaxivity value (255.2 F emM⁻¹ S⁻¹) higher than Resovist (183.4 F emM⁻¹ S⁻¹), a commercial SPION-based T₂ contrast agent. The high magnetic relaxivity of the tumor-targeting NCPs coupled with their enhanced cellular uptake considerably promoted the MRI contrast of targeted cancer cells. These results demonstrate the great potential of the FA-decorated SPION/DOX-loaded NCPs as an advanced cancer theranostic nanodevice.
Collapse
Affiliation(s)
- Wen-Hsuan Chiang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Lin JK, Shen MY, Lin TC, Lan YT, Wang HS, Yang SH, Li AFY, Chang SC. Distribution of a single nucleotide polymorphism of insulin-like growth factor-1 in colorectal cancer patients and its association with mucinous adenocarcinoma. Int J Biol Markers 2010; 25:195-199. [PMID: 21161940] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/22/2010] [Indexed: 05/30/2023]
Abstract
PURPOSE To analyze the difference in the distribution of an insulin growth factor-1 (IGF-1) polymorphism (-2995 C/A) between young and old colorectal cancer (CRC) patients. METHODS Information from 950 CRC patients undergoing surgery at the Taipei Veterans General Hospital between 2000 and 2005 was collected. The IGF-1 polymorphism was analyzed in patients in extreme age ranges at the time of CRC onset (i.e., under the 20th and above the 80th percentiles, respectively). Associations between clinicopathological variables and the IGF-1 polymorphism were analyzed. RESULTS Young CRC patients had a higher frequency of advanced disease (58.7%) and mucinous adenocarcinoma (20%) than old CRC patients. Among old CRC patients, the frequency of the AA genotype of IGF-1 was 12.7% (24/189), which was significantly higher than in young patients (4.2%). Other clinicopathological factors including tumor location, differentiation, lymphovascular invasion, and TNM stage were not associated with the AA genotype of IGF-1. Mucinous differentiation (but not the other clinicopathological factors) was significantly associated with the CA/AA genotype of IGF-1 (39/195). CONCLUSIONS Older patients had a higher frequency of the AA genotype of IGF-1(-2995 C/A), while younger patients more often had advanced disease and mucinous adenocarcinoma.
Collapse
Affiliation(s)
- Jen-Kou Lin
- Division of Colon and Rectal Surgery, Department of Surgery, Taipei Veterans General Hospital, National Yang-Ming University, Taipei, Taiwan
| | | | | | | | | | | | | | | |
Collapse
|
29
|
Huo HB, Wang C, Yan FD, Ren HZ, Shen MY. Room temperature SnO2 thin film gas sensor fabricated on Si nanospikes. J Nanosci Nanotechnol 2009; 9:4817-4819. [PMID: 19928155 DOI: 10.1166/jnn.2009.1218] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The SnO2 thin film CO gas sensors have been fabricated on silicon nanostructured surface made using a femtosecond pulsed laser irradiation. The measurement shows a significant response to the CO gas at room temperature. While a SnO2 sensor fabricated on a flat surface shows no response when CO gas exists at room temperature. The high area/volume ratio and sharp structures of the nanospikes enhance the sensitivity of SnO2 at room temperature.
Collapse
Affiliation(s)
- H B Huo
- Department of Physics, University of Massachusetts Lowell, One University Avenue, Lowell, Massachusetts 01854, USA
| | | | | | | | | |
Collapse
|
30
|
Shen MY, Huang IP, Chen WS, Chang JT, Lin JK. Influence of pneumoperitoneum on tumor growth and pattern of intra-abdominal tumor spreading: in vivo study of a murine model. Hepatogastroenterology 2008; 55:947-951. [PMID: 18705304] [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: 05/26/2023]
Abstract
BACKGROUND/AIMS The employment of laparoscopy in the treatment of locally advanced colorectal cancer is still questioned by many surgeons, mainly due to the fear of spreading tumors by the laparoscopic procedure. However, it is still unknown whether laparoscopy is actually associated with increased tumor dissemination, especially for those with tumor invasion through the serosa. The main purpose of this study is to investigate the effect of pneumoperitoneum on the intra-abdominal tumor growth and spreading of colon cancer cells by an animal study of murine model. METHODOLOGY Under anesthesia, 10(6) tumor cells (CT26) were inoculated into the lower abdominal cavity of BALB/c mice by a mini-laparotomy. The mice were randomized to undergo pneumoperitoneum with CO2 (n=10), helium (n=10), or to act as controls (n=10). Pneumoperitoneum was established over 20 min at a pressure of 10cm H2O. The distribution pattern and the weight of peritoneal tumor growth of each mouse were recorded and analyzed at 15 days after surgery. RESULTS The mean ratios of the tumor mass over the total body weight of the mice were 0.77+/-1.13% (control group), 4.30+/-0.86% (CO2 pneumoperitoneum), and 2.17+/-0.88% (helium pneumoperi-toneum). The mean tumor weight ratio (3.23+/-1.38%) of the pneumoperitoneal group was 4 times larger than that of the control group (p<0.001). Regarding the use of different insufflation gases over tumor growth, CO2 accelerates tumor growth more significantly than helium (p<0.001). Intraabdominal distribution (p=0.047) and diaphragm spreading (p<0.001) were significantly greater in the pneumoperitoneum group than the control group. CONCLUSIONS The results of this animal study imply that presence of a pneumoperitoneum enhances the implantation and growth of free intraperitoneal malignant colon cancer cells in this in vivo mouse model. The results of the current study suggest that insufflation during pneumoperitoneum may play an important role in the development of peritoneal dissemination when there are free tumor cells in the intra-abdominal cavity, and the effect of using CO2 might be greater than that of using helium.
Collapse
Affiliation(s)
- Ming-Yin Shen
- Division of Colon and Rectal Surgery, Department of Surgery, Veterans General Hospital,Taipei, Taiwan
| | | | | | | | | |
Collapse
|
31
|
Sheu JR, Hsiao G, Shen MY, Chou CY, Lin CH, Chen TF, Chou DS. Inhibitory mechanisms of kinetin, a plant growth-promoting hormone, in platelet aggregation. Platelets 2003; 14:189-96. [PMID: 12850843 DOI: 10.1080/0953710021000060925] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Kinetin has been shown to have anti-aging effects on several different systems including plants and human cells. The aim of this study was to examine the detailed inhibitory mechanisms of kinetin in platelet aggregation. In this study, kinetin concentration-dependently (50-150 microM) inhibited platelet aggregation in human platelets stimulated by agonists. Kinetin (70 and 150 microM) also concentration-dependently inhibited intracellular Ca2+ mobilization and phosphoinositide breakdown in platelets stimulated by collagen (1 microg/ml). Kinetin (70 and 150 microM) significantly inhibited thromboxane A2 formation stimulated by collagen (1 microg/ml) and arachidonic acid (60 microM) in human platelets. In addition, kinetin (70 and 150 microM) significantly increased the formation of cyclic AMP. Intracellular pH values were measured spectrofluorometrically using the fluorescent probe BCECF-AM in platelets. The thrombin-evoked increase in pHi was markedly inhibited in the presence of kinetin (70 and 150 microM). Rapid phosphorylation of a platelet protein of molecular weight (Mr) 47000 (P47), a marker of protein kinase C activation, was triggered by collagen (1 microg/ml). This phosphorylation was inhibited by kinetin (70 and 150 microM). In conclusion, these results indicate that the anti-platelet activity of kinetin may be involved in the following pathways: kinetin's effects may initially be due to inhibition of the activation of phospholipase C and the Na+/H+ exchanger. This leads to lower intracellular Ca2+ mobilization, followed by inhibition of TxA2 formation and then increased cyclic AMP formation, followed by a further inhibition of the Na+/H+ exchanger, ultimately resulting in markedly decreased intracellular Ca2+ mobilization and phosphorylation of P47. These results suggest that kinetin has an effective anti-platelet effect and that it may be a potential therapeutic agent for arterial thrombosis.
Collapse
Affiliation(s)
- J R Sheu
- Graduate Institute of Medical Sciences, Taipei Medical University, Taiwan.
| | | | | | | | | | | | | |
Collapse
|
32
|
Sheu JR, Hsiao G, Shen MY, Lin WY, Tzeng CR. The hyperaggregability of platelets from normal pregnancy is mediated through thromboxane A2 and cyclic AMP pathways. Clin Lab Haematol 2002; 24:121-9. [PMID: 11985559 DOI: 10.1046/j.1365-2257.2002.t01-1-00430.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
There is substantial evidence of increased platelet reactivity in vivo and in vitro during pregnancy, with the risk of developing pre-eclampsia. In this study, platelet function was studied during 28-40 weeks of gestation in a group of women who remained normotensive and in a group of nonpregnant female controls. Platelet aggregation stimulated by thrombin and adenosine diphosphate was markedly enhanced in washed platelets from pregnant subjects. Thrombin (0.04 U/ml)-evoked increases in intracellular Ca+2 mobilization of Fura 2-AM-loaded platelets were also enhanced in pregnant subjects. The binding of fluorescein isothiocyanate (FITC)-triflavin (2 microg/ml) to the glycoprotein IIb/IIIa complex in thrombin-activated platelets did not differ significantly between the nonpregnant and pregnant groups. Thromboxane A2 (TXA2) formation in both resting and thrombin-activated platelets from pregnant subjects was significantly greater than from nonpregnant subjects. Levels of cyclic adenosine monophosphate (cAMP) in both resting and prostaglandin E1-treated platelets (10 micromol/l) from pregnant subjects were significantly lower than those from nonpregnant subjects. There were no significant differences between nonpregnant and pregnant subjects in platelet cAMP levels in the presence of imidazole (600 micromol/l) and indomethacin (500 micromol/l). Intracellular pH values in platelets were measured spectrofluorometrically using the fluorescent probe, BCECF-AM. The increase in intracellular pH stimulated by thrombin (0.04 U/ml) in pregnant subjects was markedly greater than that in observed nonpregnant subjects. We conclude that the agonist-induced hyperaggregability of platelets in normal pregnancy may be due, at least partly, to stimulation of the Na+/H+ exchanger and subsequently to elevated intracellular Ca+2 mobilization, and then to increased TXA2 formation and a lowered level of cAMP, which leads to further increases in intracellular Ca+2 mobilization, and finally to enhanced platelet aggregation.
Collapse
Affiliation(s)
- J R Sheu
- Graduate Institute of Medical Sciences, Department of Pharmacology, Taipei Medical University, Taipei 110, Taiwan.
| | | | | | | | | |
Collapse
|
33
|
Shen MY, Liu YH, Sinusas AJ, Fetterman R, Bruni W, Drozhinin OE, Zaret BL, Wackers FJ. Quantification of regional myocardial wall thickening on electrocardiogram-gated SPECT imaging. J Nucl Cardiol 1999; 6:583-95. [PMID: 10608585 DOI: 10.1016/s1071-3581(99)90095-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Current assessment of regional left ventricular function with electrocardiogram (ECG)-gated single photon emission computed tomography (SPECT) imaging is generally performed by visual inspection. The objective of this study was to develop and validate a new computer algorithm for quantifying regional left ventricular wall thickening on ECG-gated SPECT images. METHODS Regional wall thickening was measured from count density changes during the cardiac cycle observed in 24-sector circumferential count distribution profiles generated from each of 8 frames of an ECG-gated SPECT study. Wall thickening was expressed as the percent count increase during systole relative to end diastole. The program was tested in a phantom simulation and in patient studies consisting of a pilot study (n = 40) and a validation study (n = 33). In the phantom study varying degrees of wall thickening were simulated. The pilot study included 20 normal subjects with low likelihood (<3%) of coronary disease and 20 patients with prior myocardial infarction. Mean wall thickening - 2 standard deviations, measured in normal subjects, defined the lower limit of normal wall thickening. This criterion was tested in the validation study in 13 normal subjects and 20 patients with prior myocardial infarction. Abnormal wall thickening was characterized by extent (percent of circumferential profile) and severity (minimal thickening). RESULTS The phantom study showed excellent linear correlation between wall thickening computed by the new software and actual wall thickening (r = 0.98). Interobserver and intraobserver reproducibility of quantitative assessment of minimal wall thickening were excellent (r = 0.98 and 0.99, P < .001). Regional wall thickening varied considerably from apex to base in the same ventricle among normal subjects. The average lower limit of normal wall thickening was 25% to 30% at the apex, 19% to 24% in the mid-ventricle, and 13% to 20% at the base of the left ventricle. In the validation study 11 of 13 normal subjects had wall thickening profiles within the pre-defined normal range. All 20 patients with prior myocardial infarction had abnormal regional wall thickening. Minimal regional wall thickening in the infarct areas was 5.4% +/- 5.5%, compared with 30.1% +/- 9.1% wall thickening in comparable anatomic areas in normal subjects (P < .001). CONCLUSION Regional wall thickening can be quantified reliably from regional count density changes during the cardiac cycle on ECG-gated SPECT images. The new software measured the extent and severity of abnormal regional wall thickening relative to normal files. The method is highly reproducible. Clinical validation showed good differentiation between normal subjects and patients with prior infarction. Quantification of regional wall thickening may enhance diagnostic accuracy and reproducibility of interpretation of gated SPECT imaging.
Collapse
Affiliation(s)
- M Y Shen
- Department of Internal Medicine (Cardiovascular Medicine), Yale University School of Medicine, New Haven, Conn 06520-8042, USA
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Liu YH, Sinusas AJ, Shi CQ, Shen MY, Dione DP, Heller EN, Wackers FJ. Quantification of technetium 99m-labeled sestamibi single-photon emission computed tomography based on mean counts improves accuracy for assessment of relative regional myocardial blood flow: experimental validation in a canine model. J Nucl Cardiol 1996; 3:312-20. [PMID: 8799250 DOI: 10.1016/s1071-3581(96)90091-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [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] [Indexed: 02/02/2023]
Abstract
BACKGROUND Quantification of single-photon emission computed tomographic (SPECT) images is generally based on determination of maximal counts on radial sectors of short-axis slices. We hypothesized that analysis of mean counts may reduce estimation error. METHODS AND RESULTS We compared quantitative 99mTc-labeled sestamibi (MIBI) SPECT based on maximal myocardial counts with that based on mean myocardial counts for accuracy of quantifying relative regional myocardial perfusion in a canine model of permanent left anterior descending coronary artery occlusion. MIBI and radiolabeled microspheres were injected during left anterior descending coronary artery occlusion. Relative microsphere myocardial blood flow was expressed as a percentage of normal (left circumflex coronary artery territory) blood flow. SPECT imaging was performed in vivo and ex vivo. Relative MIBI uptake on SPECT short-axis slices was quantified with normalized circumferential profiles based on maximal and mean counts. In vivo and ex vivo SPECT relative myocardial count density was compared to relative myocardial blood flow in six dogs. In the comparisons, percent errors in estimating the relative blood flow and relative flow deficit with MIBI SPECT imaging were calculated. There was an excellent correlation between absolute myocardial tissue MIBI activity and regional myocardial blood flow for each of the six dogs (r = 0.90 to 0.98). The correlations between relative myocardial count density on SPECT and relative blood flow for individual sectors were similar for maximal and mean count profiles (maximal, 0.79 to 0.83; mean, 0.77 to 0.82). Comparing the nadirs of in vivo and ex vivo circumferential count profiles, the correlations were slightly better (maximal, 0.82 to 0.91; mean, 0.87 to 0.91). Average percent errors in assessing relative blood flow and relative flow deficit were decreased significantly by use of mean count profiles (p < 0.05). CONCLUSIONS Relative SPECT count density with either maximal or mean count profiles correlated well with relative myocardial blood flow. Compared with maximal count profiles, quantification with mean count profiles improved estimation of relative flow.
Collapse
Affiliation(s)
- Y H Liu
- Department of Medicine, Yale University School of Medicine, New Haven, Conn., USA
| | | | | | | | | | | | | |
Collapse
|
35
|
Shen MY, Koyama S, Saito M, Goto T, Kuroda N. Second-harmonic generation resonant to the 1S orthoexciton level of cuprous oxide. Phys Rev B Condens Matter 1996; 53:13477-13481. [PMID: 9983091 DOI: 10.1103/physrevb.53.13477] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
36
|
de Lanerolle NC, Gunel M, Sundaresan S, Shen MY, Brines ML, Spencer DD. Vasoactive intestinal polypeptide and its receptor changes in human temporal lobe epilepsy. Brain Res 1995; 686:182-93. [PMID: 7583284 DOI: 10.1016/0006-8993(95)00365-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [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] [Indexed: 01/26/2023]
Abstract
The distribution of the VIP receptor in the human hippocampus was studied by receptor autoradiography using [3-iodotyrosyl-125I]Vasoactive Intestinal Peptide (VIP) as a ligand, and the relationship of receptor distribution to the distribution of the peptide (visualized by immunocytochemistry) was examined in hippocampi surgically removed from patients with medically intractable temporal lobe epilepsy (TLE) and hippocampi obtained at autopsy from neurologically normal subjects. In the autopsy hippocampi and hippocampi from TLE patients with extrahippocampal temporal lobe lesions [125I]VIP binding was highest in the dentate molecular layer, with lower levels in the fields of Ammon's Horn (CA fields) and the subiculum. In hippocampi from patients with no temporal lobe lesions but considerable hippocampal neuronal loss there were significant elevations in the levels of ligand binding in all CA fields and the subiculum. Ligand binding densities in all CA fields of the patient hippocampi were strongly negatively correlated with neuronal numbers. Immunocytochemical localization of VIP shows no obvious change in the distribution patters of VIP immunoreactivity in the patient groups. This is the first demonstration of VIP and its receptor distribution in the human hippocampus. It is suggested that the elevated levels of receptor binding in the hippocampal seizure focus may indicate a mechanism for greater excitability of neurons and/or for their survivability in the face of the increased excitation and potential for injury in a seizure focus.
Collapse
Affiliation(s)
- N C de Lanerolle
- Section of Neurosurgery, Yale University School of Medicine, New Haven, CT 06520-8039, USA
| | | | | | | | | | | |
Collapse
|
37
|
Hilbert DM, Shen MY, Rapp UR, Rudikoff S. T cells induce terminal differentiation of transformed B cells to mature plasma cell tumors. Proc Natl Acad Sci U S A 1995; 92:649-53. [PMID: 7846031 PMCID: PMC42677 DOI: 10.1073/pnas.92.3.649] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Major interest in the analysis of mature plasma cell neoplasias of mice and humans has focused on identification of precursor cells that give rise to mature malignant plasma cells. Although several laboratories have recently suggested that such cells are present in the granulomas of pristane-treated mice and the bone marrow of some multiple myeloma patients, the in vivo cellular interactions required for their differentiation into mature plasma cell tumors remains unclear. Given the extensive interactions of peripheral T cells and normal B cells, we assessed the potential role of T cells in plasma-cell tumor development, by using a myc, raf-containing retrovirus, J3V1, to induce plasmacytomas in normal BALB/c mice, T-cell-deficient nude mice, and T-cell-reconstituted nude mice. The B-lineage tumors arising in normal BALB/c mice were uniformly mature plasmacytomas, most of which secreted immunoglobulin. In contrast, nude mice yielded predominantly non-immunoglobulin-secreting B-cell lymphomas with a phenotype characteristic of peripheral B cells. T-cell reconstitution of nude mice prior to tumor induction resulted in a shift from B-cell lymphomas to plasmacytomas. These results imply that transformation can occur prior to terminal differentiation of B cells and that such transformed cells can be driven to terminal differentiation by peripheral T cells. These findings further suggest that, in human multiple myeloma, the ability of T cells to influence the differentiation state of transformed B cells may provide a mechanism by which malignant plasma cells found in the bone marrow could arise from clonotypically related less-mature B cells found in both the bone marrow and periphery.
Collapse
Affiliation(s)
- D M Hilbert
- Laboratory of Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| | | | | | | |
Collapse
|
38
|
Zhang SL, Hou YT, Shen MY, Li J, Yuan SX. Multiphonon Raman scattering resonant with two kinds of excitons in a (CdTe)2(ZnTe)4/ZnTe short-period-superlattice multiple quantum well. Phys Rev B Condens Matter 1993; 47:12937-12940. [PMID: 10005495 DOI: 10.1103/physrevb.47.12937] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
39
|
Bai Y, Shen MY, Zhang DF, Lai CN, Chen Y, Sun YX, Yang ZG. Immunophenotyping of 515 cases of acute lymphoblastic leukemia in China. Sci China B 1991; 34:1319-28. [PMID: 1801840] [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: 12/28/2022]
Abstract
Using cell surface markers and a panel of monoclonal antibodies, 515 cases of acute lymphoblastic leukemia (ALL) were immunophenotyped. T cell type ALL (T-ALL), non-T cell type ALL (Non-T-ALL) including common ALL (C-ALL), Null-ALL and B cell type ALL (B-ALL) were found. These major subtypes of ALL were further divided according to their phenotypes in detail. It was noticed that the phenotypes of these subtypes of ALL reflected basically the phenotypes of normal T or B cells at various differentiation stages or certain population of lymphocytes. The diagnosis of cell lineage was more precise when based on immunophenotyping than morphological description. The combination of morphological and immunological classification can improve the diagnosis of acute leukemias. In addition, it was observed that the immunophenotyping was relevant to clinicopathologic features, responses to therapy and prognosis of ALL patients. The incidences of major subtypes of ALL, the age distribution of ALL subsets and male sex bias with T-ALL in Chinese are discussed.
Collapse
Affiliation(s)
- Y Bai
- Institute of Basic Medical Sciences, Beijing, PRC
| | | | | | | | | | | | | |
Collapse
|
40
|
Shen MY, Bai Y, Lai CN. [Correlation of immunophenotype with clinical features in T-cell acute lymphoblastic leukemia]. Zhonghua Nei Ke Za Zhi 1991; 30:35-9, 61. [PMID: 2032495] [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: 12/29/2022]
Abstract
The immunophenotype of leukemicblasts from 111 patients with T-ALL or T-NHL were further examined by using a panel of standardized McAbs of CD nomenclature to human leukocyte differentiation antigens. Four major subsets of T-ALL were defined: pre T-ALL, immature T-ALL (I), common T-ALL (II) and mature T-ALL (III), with the percentages 20.7%, 20.7%, 20.7% and 37.0% respectively. In addition there was a case with M-T acute hybrid leukemia. Some of the clinical features of the patients with T-ALL and T-NHL were compared. It was found that male predominance, older age, higher leukocyte count, lower platelet level, relative higher hemoglobin level and increased incidence of extramedullary involvement, including hepatomegaly, splenomegaly and lymphadenopathy were alike for all subsets of T-ALL cases. However, the average white cell level and incidence of lymphadenopathy in the pre T-ALL subset significantly differed from those in other subsets. The correlation of immunophenotype with morphologic characterization was also discussed in this paper.
Collapse
Affiliation(s)
- M Y Shen
- Institute of Basic Medical Sciences, Beijing, China
| | | | | |
Collapse
|
41
|
Abstract
The majority of patients with temporal lobe epilepsy show hippocampal sclerosis, which pathologically represents neuronal loss and gliosis. We studied volumetric neuronal density on a representative mid to mid-posterior level slice of hippocampi surgically removed from intractable temporal lobe epilepsy cases, and compared the results between 25 non-tumor epilepsy (NTE) cases and 5 tumor-associated epilepsy (TAE) cases. Eleven age-matched non-epileptic autopsy cases were studied as controls. Cells were counted in the CA1 through CA4 fields and the stratum granulosum of the dentate fascia. In NTE every hippocampal field showed statistically significant loss of neurons, the neuronal density in each field ranging from 35% to 50% of that of control. The mean neuronal density between the TAE and NTE groups also showed statistically significant differences in all hippocampal fields. The neuronal density of hippocampal fields of NTE ranged from 43% to 58% of that of TAE. Tumor-associated epilepsy cases, however, failed to show any statistically significant deviation from the control in their neuronal density. The etiology of the difference in neuronal density between the TAE and NTE groups is discussed.
Collapse
Affiliation(s)
- J H Kim
- Section of Neuropathology, Yale University School of Medicine, New Haven, CT 06510
| | | | | | | | | |
Collapse
|
42
|
Chang JW, Zhang X, Wang JJ, Ma TX, Dong KQ, Wang WC, Han SN, Shen MY. Distribution of juxtaglomerular cells and synthesis and release of renin granules in patients with renal artery stenosis. Chin Med J (Engl) 1989; 102:934-9. [PMID: 2517739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
100 pieces of renal tissue from 4 patients with renal artery stenosis were studied histologically. Juxtaglomerular cells were found not only in the region close to the glomerulus but also in the proximal 2/3 of the afferent arteriole of the glomerulus, but not in the interlobular arterioles. In the cytoplasm of juxtaglomerular cells, three kinds of granules were found: crystalline granules (immature), the round or ovoid granules (mature), and the lobulated granules (fusion). Renin was synthesized in the rough endoplasmic reticulum and packaged in the Golgi complex. Electron microscopic findings suggested that the secretory microvesicles were produced on the surface of Golgi complex. They fused to form primary crystalline granules, which were enlarged by renin supplied by transportation vesicles and finally formed typical crystalline granules. The mature renin granules (round or ovoid) moved toward the periphery of the cytoplasma. Their limiting membranes on the side toward the basement membrane disintegrated and formed microvesicular bodies passing through the periplasm, and the basement membrane and were discharged into the interstitial matrix.
Collapse
|
43
|
Shen MY, Chu JP. [The proliferation and differentiation capacity of hemopoietic stem cells after large-dose 60Co irradiation]. Shi Yan Sheng Wu Xue Bao 1988; 21:63-9. [PMID: 3201846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
44
|
Shen MY, Chu JP. [The potential residual damage of hemopoietic stem cells after large-dose 60Co irradiation]. Shi Yan Sheng Wu Xue Bao 1988; 21:71-7. [PMID: 3059728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
45
|
Lee YS, Lien WP, Shen MY, Chen JJ, Chang FZ. Dynamic changes of coronary sinus enzyme activities during selective coronary cinearteriography. Taiwan Yi Xue Hui Za Zhi 1980; 79:548-55. [PMID: 6933212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
46
|
Lee YS, Hsu TS, Lien WP, Shen MY, Chen JJ, Chang FZ. Hemodynamic and metabolic studies on congestive liver. Taiwan Yi Xue Hui Za Zhi 1980; 79:280-5. [PMID: 6930449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
47
|
Billheimer JT, Shen MY, Carnevale HN, Horton HR, Jones EE. Isolation and characterization of acetylornithine delta-transaminase of wild-type Escherichia coli W. Comparison with arginine-inducible acetylornithine delta-transaminase. Arch Biochem Biophys 1979; 195:401-13. [PMID: 112925 DOI: 10.1016/0003-9861(79)90367-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
48
|
Lee YS, Lien WP, Shen MY, Chen JS, Chang FZ, Chen JJ. Cardiac enzyme study in the diagnosis of acute myocardial infarction-simultaneous determinations of creatine phosphokinase isoenzymes and lactate dehydrogenase isoenzymes. Taiwan Yi Xue Hui Za Zhi 1977; 76:604-11. [PMID: 270552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
49
|
Shen MY, Hsu ZS. Antigenicity of sperm: immunization of rabbits with pig's sperm. CHINESE J PHYSIOL 1975; 22:17-30. [PMID: 1235338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The state of antibody production and the tissue and species specificities together with the sperm immobilizing action of various antibodies in rabbits were examined after immunization with pig's sperm. Before the immunization, the titers of various antibodies against pig's sperm seemed to be generally higher in male than in virgin female, but they became no obvious difference between the two sexes after the immunization. Precipitins of the sera obtained by immunizing rabbits with pig's spermatozoa extract reacted not only with pig's spermatozoa extract but also with heterologous spermatozoa extract to moderate degree, but no cross reaction with pig's serum or heterologous serum was visible, and it was not associated with the sperm immobilization. The sperm-microagglutinin obtained by immunization with pig's spermatozoa showed strong species specificity and moderate tissue specificity. The motility of the sperm was not obviously inhibited by sperm agglutinin. The titer of it was the highest among the immune antibodies, but there are problems in detecting the specific antibody because spontaneous sperm agglutination is common and it is difficult to determine whether the agglutination is due to antisperm antibody or to a nonspecific factor. The evidence that strong tissue and species specific sperm-immobilizing antibody could be produced by immunizing rabbits with heterologous pig's sperm in both sexes gives us the confidence that sperm immobilization by immunization of both sexes with homologous sperm could contribute to human population control in the future.
Collapse
|