1
|
Zhang T, Pang C, Xu M, Zhao Q, Hu Z, Jiang X, Guo M. The role of immune system in atherosclerosis: Molecular mechanisms, controversies, and future possibilities. Hum Immunol 2024; 85:110765. [PMID: 38369442 DOI: 10.1016/j.humimm.2024.110765] [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: 07/17/2023] [Revised: 02/06/2024] [Accepted: 02/08/2024] [Indexed: 02/20/2024]
Abstract
Numerous cardiovascular disorders have atherosclerosis as their pathological underpinning. Numerous studies have demonstrated that, with the aid of pattern recognition receptors, cytokines, and immunoglobulins, innate immunity, represented by monocytes/macrophages, and adaptive immunity, primarily T/B cells, play a critical role in controlling inflammation and abnormal lipid metabolism in atherosclerosis. Additionally, the finding of numerous complement components in atherosclerotic plaques suggests yet again how heavily the immune system controls atherosclerosis. Therefore, it is essential to have a thorough grasp of how the immune system contributes to atherosclerosis. The specific molecular mechanisms involved in the activation of immune cells and immune molecules in atherosclerosis, the controversy surrounding some immune cells in atherosclerosis, and the limitations of extrapolating from relevant animal models to humans were all carefully reviewed in this review from the three perspectives of innate immunity, adaptive immunity, and complement system. This could provide fresh possibilities for atherosclerosis research and treatment in the future.
Collapse
Affiliation(s)
- Tianle Zhang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
| | - Chenxu Pang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
| | - Mengxin Xu
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
| | - Qianqian Zhao
- School of Medical Technology, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
| | - Zhijie Hu
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
| | - Xijuan Jiang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China.
| | - Maojuan Guo
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China.
| |
Collapse
|
2
|
Lin F, Zhao J, Lu YX, Zou JZ, Xiao P, Liang JQ, Pang C, Gu QL. [Analysis of clinical characteristics of children with adenoid hypertrophy and pharyngolaryngeal reflux]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2024; 59:140-146. [PMID: 38369792 DOI: 10.3760/cma.j.cn115330-20231221-00318] [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: 02/20/2024]
Abstract
Objectives: To explore the clinical characteristics of children with adenoid hypertrophy (AH) and laryngopharyngeal reflux (LPR) by detecting the expression of pepsin in adenoids as a standard for AH with LPR. Methods: A total of 190 children who were admitted for surgical treatment due to AH were included in the study. The main clinical symptoms of the patients were recorded, and the degree of adenoid hypertrophy was evaluated. Before the surgery, Reflux Symptom Index (RSI) and Reflux Finding Score (RFS) were used to evaluate the reflux symptoms. After the surgery, pepsin immunohistochemical staining was performed on the adenoid tissue, and according to the staining results, the patients were divided into study group (pepsin staining positive) and control group (pepsin staining negative). SPSS 19.0 software was used for statistical analysis. Quantitative data conforming to normal distribution between the two groups were tested by two-independent sample t test, and quantitative data with skewed distribution were tested by Mann-Whitney U test. Results: The positive rate of pepsin staining in the 190 AH patients was 78.4% (149/190). The study group had higher levels of preoperative symptoms such as erythema and/or congestion of the pharynx(2.1±0.7 vs. 1.8±0.6,t=2.23), vocal cord edema[1.0(0, 1.0) vs. 1.0(0, 1.0), Z=2.00], diffuse laryngeal edema[0(0, 1.0) vs. 0(0, 0), Z=2.48], posterior commissure hypertrophy[(1.4±0.6 vs. 1.1±0.5), t=2.63], and a higher total score on the RFS scale than the control group(6.2±2.7 vs. 5.0±2.6, t=2.47), with statistical differences (P<0.05). The sensitivity and specificity of RFS score in diagnosing AH with LPR were 24.8% and 80.5%, respectively. When RFS>5 was used as the positive threshold, the sensitivity and specificity of RFS score in diagnosing AH with LPR were 61.1% and 58.5%, respectively. There was a statistical difference in the number of positive cases of RFS score between the study group and the control group(91 vs. 17,χ2=5.04,P=0.032). Conclusions: LPR is common in AH children. Children with AH and LPR have specific performance in electronic laryngoscopy, such as erythema with edema in the pharynx, posterior commissure hypertrophy, and vocal cord edema.
Collapse
Affiliation(s)
- F Lin
- Department of Otorhinolaryngology Head and Neck Surgery, Children's Hospital, Capital Institute of Pediatrics,Beijing 100020,China
| | - J Zhao
- Department of Otorhinolaryngology Head and Neck Surgery, Children's Hospital, Capital Institute of Pediatrics,Beijing 100020,China
| | - Y X Lu
- Department of Otorhinolaryngology Head and Neck Surgery, Children's Hospital, Capital Institute of Pediatrics,Beijing 100020,China
| | - J Z Zou
- Department of Pathology, Children's Hospital Capital Institute of Pediatrics,Beijing 100020,China
| | - P Xiao
- Department of Pathology, Children's Hospital Capital Institute of Pediatrics,Beijing 100020,China
| | - J Q Liang
- Department of Otorhinolaryngology Head and Neck Surgery, Children's Hospital, Capital Institute of Pediatrics,Beijing 100020,China
| | - C Pang
- Department of Otorhinolaryngology Head and Neck Surgery, Children's Hospital, Capital Institute of Pediatrics,Beijing 100020,China
| | - Q L Gu
- Department of Otorhinolaryngology Head and Neck Surgery, Children's Hospital, Capital Institute of Pediatrics,Beijing 100020,China
| |
Collapse
|
3
|
Pang C, Zhang B, Chen Y. [Cystic echinococcosis misdiagnosed as hepatic cyst: a case report]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2023; 35:322-324. [PMID: 37455108 DOI: 10.16250/j.32.1374.2022222] [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: 07/18/2023]
Abstract
This case report presents the diagnosis and treatment of a case of cystic echinococcosis misdiagnosed as hepatic cyst. The case had anaphylactic shock caused by extravasation of cyst fluid during extraction of hepatic cyst and suffered from postoperative recurrence of echinococcosis. This case report may provide insights into diagnosis and treatment of cystic echinococcosis among healthcare workers in non-endemic areas.
Collapse
Affiliation(s)
- C Pang
- Department of Laboratory Medicine, Guiyang Public Health Treatment Center, Guiyang, Guizhou 550004, China
| | - B Zhang
- Department of Laboratory Medicine and Pathology, Hospital of the Chinese People's Liberation Army 83rd Group Army, China
| | - Y Chen
- Department of Laboratory Medicine and Pathology, Hospital of the Chinese People's Liberation Army 83rd Group Army, China
| |
Collapse
|
4
|
Pang C, Nisbet R, Gibson M, Evans N, Khalifa M, Papadopoulou A, Tsui J, Hamilton G, Brookes J, Lim CS. 522 Early Follow-Up Quality of Life and Mental Health of Patients with Congenital Vascular Malformations Cared for in a Multi-Disciplinary Specialist Center. Br J Surg 2022. [DOI: 10.1093/bjs/znac269.306] [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] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Aim
To evaluate the early follow-up quality of life (QoL), pain and mental health of patients with congenital vascular malformation (CVM) receiving care by a single multi-disciplinary specialist center
Method
This was a prospective observational study. All patients with CVM who received care (supportive treatment only, open surgery, targeted pharmacological therapy, embolosclerotherapy), and had follow-up, between February 1st 2018 and January 31st 2020 were included. The health-related QoL, pain, and mental health were assessed with validated questionnaires: SF-36, VAS-P and HADS. The CVM were categorized into types – low-flow (LFVM) and high-flow (HFVM), and anatomical locations. Paired t-test was used for all analyses. P<0.05 were considered significant.
Results
110 patients (85 LFVM and 25 HFVM) with a mean age of 36.9 years were included. Significant improvement was found in the bodily pain domain of SF-36 and VAS-P (both P = 0.01) in all patients. However, only patients with HFVM reported significant improvement in the bodily pain domain of SF-36 (P=0.002) and VAS-P (P = 0.02). Patients who received supportive treatment only reported significant improvement in mental health (P=0.004) and social functioning (P=0.03) domains of SF-36. Meanwhile, patients treated with embolo-sclerotherapy reported significant improvement only in VAS-P (P=0.02). Patients who received targeted pharmacological therapy reported no significant early changes.
Conclusions
The effects of care on early follow-up QoL, pain and mental health of patients with CVM were heterogenous. Future research is required to understand the various factors that affect the QoL and mental health of these patients, as well as the holistic approaches to manage them.
Collapse
Affiliation(s)
- C Pang
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London , London , United Kingdom
| | - R Nisbet
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
| | - M Gibson
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
| | - N Evans
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
| | - M Khalifa
- Department of Interventional Radiology, Royal Free London NHS Foundation Trust , London , United Kingdom
| | - A Papadopoulou
- Department of Interventional Radiology, Royal Free London NHS Foundation Trust , London , United Kingdom
| | - J Tsui
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London , London , United Kingdom
| | - G Hamilton
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London , London , United Kingdom
| | - J Brookes
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
- Department of Interventional Radiology, Royal Free London NHS Foundation Trust , London , United Kingdom
| | - CS Lim
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London , London , United Kingdom
| |
Collapse
|
5
|
Pang C, Arasakumar D, Evans N, Papadopoulou A, Khalifa M, Hamilton G, Brookes J, Lim CS. 518 Efficacy and Safety of Embolo-Sclerotherapy of Low-Flow Vascular Malformations Based on the Experience from a Single Specialist Centre. Br J Surg 2022. [DOI: 10.1093/bjs/znac269.305] [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] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Aim
To evaluate the efficacy and safety of embolo-sclerotherapy (EST) of low-flow vascular malformations (LFVM) in a specialist vascular anomalies centre.
Method
All patients with LFVM who underwent EST from 01 January 2015–31 December 2019 were retrospectively reviewed. All ESTs were performed with foam STS 3%, ethanol, coils and/or other substances e.g., triamcinolone. LFVMs were grouped according to Puig's classification. The outcome measures were treatment effects and complications. Continuous variables were compared using analysis of variance (ANOVA) F test. Other discrete variables were compared using Chi-squared tests. P<0.05 were considered significant.
Results
A total of 207 patients, with a mean age of 32 years (range 1–71 years) were included. The use of EST with foam STS was significantly lower for type I LFVM (61.8%) compared to others (p<0.001). However, significantly higher type I LFVM (26.5%) were treated with surgery than EST (p<0.001). Overall, outcome categories were significantly different across all types of LFVM (p<0.001), with more discharges for Type I (52.9%) LFVMs but more failure to follow-up in patients with Type II (24.5%) LFVM. EST complications was significantly higher with type I (14.7%) LFVMs (p=0.030). The doses of STS in the first procedure were significantly different across all types of LFVM (p<0.001) with most type I LFVM patients receiving ≤2ml.
Conclusions
EST particularly with foam sclerotherapy is clinically effective and safe for patients with LFVM especially in those with Puig's type I and II lesions. This classification may provide an important guide to volume of sclerosant required and the potential success rate.
Collapse
Affiliation(s)
- C Pang
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London , London , United Kingdom
| | - D Arasakumar
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
| | - N Evans
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
| | - A Papadopoulou
- Department of Interventional Radiology, Royal Free London NHS Foundation Trust , London , United Kingdom
| | - M Khalifa
- Department of Interventional Radiology, Royal Free London NHS Foundation Trust , London , United Kingdom
| | - G Hamilton
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London , London , United Kingdom
| | - J Brookes
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
- Department of Interventional Radiology, Royal Free London NHS Foundation Trust , London , United Kingdom
| | - CS Lim
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust , London , United Kingdom
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London , London , United Kingdom
| |
Collapse
|
6
|
Pang C, Nisbet R, Gibson M, Evans N, Khalifa M, Papadopoulou A, Tsui J, Hamilton G, Brookes J, Lim CS. O064 Early follow-up quality of life and mental health of patients with congenital vascular malformations cared for in a multi-disciplinary specialist center. Br J Surg 2022. [DOI: 10.1093/bjs/znac242.064] [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] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Abstract
Introduction
To evaluate the early follow-up quality of life (QoL), pain and mental health of patients with congenital vascular malformation (CVM) receiving care by a single multi-disciplinary specialist centre
Methods
All patients with CVM who received care (supportive treatment only, open surgery, targeted pharmacological therapy, embolosclerotherapy), and had follow-up, between 1 February 2018 and 31 January 2020 were included. The health-related QoL, pain, and mental health were assessed with validated questionnaires: SF-36, VAS-P and HADS. The CVM were categorized into types – low-flow (LFVM) and high-flow (HFVM), and anatomical locations. Paired t-test was used for all analyses. Differences were considered significant at P<0.05.
Results
110 patients (85 LFVM and 25 HFVM) with a mean age of 36.9 years were included. Significant improvement was found in the bodily pain domain of SF-36 and VAS-P (both P = 0.01) in all patients. However, only patients with HFVM reported significant improvement in the bodily pain domain of SF-36 (P=0.002) and VAS-P (P = 0.02). Patients who received supportive treatment only reported significant improvement in mental health (P=0.004) and social functioning (P=0.03) domains of SF-36. Meanwhile, patients treated with embolosclerotherapy reported significant improvement only in VAS-P (P=0.02). Patients who received targeted pharmacological therapy reported no significant early changes.
Conclusion
The effects of care on early follow-up QoL, pain and mental health of patients with CVM were heterogenous. Future research is required to understand the various factors that affect the QoL and mental health of these patients, as well as the holistic approaches to manage them.
Take-home message
The effects of care on early follow-up QoL, pain and mental health of patients with CVM were heterogenous. Future research is required to understand the various factors that affect the QoL and mental health of these patients, as well as the holistic approaches to manage them.
Collapse
Affiliation(s)
- C Pang
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London
| | - R Nisbet
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust
| | - M Gibson
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust
| | - N Evans
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust
| | - M Khalifa
- Department of Interventional Radiology, Royal Free London NHS Foundation Trust
| | - A Papadopoulou
- Department of Interventional Radiology, Royal Free London NHS Foundation Trust
| | - J Tsui
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London
| | - G Hamilton
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London
| | - J Brookes
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust
- Department of Interventional Radiology, Royal Free London NHS Foundation Trust
| | - CS Lim
- Department of Vascular Surgery, Royal Free London NHS Foundation Trust
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London
| |
Collapse
|
7
|
Wang M, Lin F, Yi XL, Pang C. [The pertinence of cognitive function of attention deficit hyperactivity disorder and OSA]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:227-230. [PMID: 35196773 DOI: 10.3760/cma.j.cn115330-20210413-00200] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- M Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Children's Hospital affiliated to Capital Institute of Pediatrics, Beijing 100020, China
| | - F Lin
- Department of Otorhinolaryngology Head and Neck Surgery, Children's Hospital affiliated to Capital Institute of Pediatrics, Beijing 100020, China
| | - X L Yi
- Department of Otorhinolaryngology Head and Neck Surgery, Children's Hospital affiliated to Capital Institute of Pediatrics, Beijing 100020, China
| | - C Pang
- Department of Otorhinolaryngology Head and Neck Surgery, Children's Hospital affiliated to Capital Institute of Pediatrics, Beijing 100020, China
| |
Collapse
|
8
|
Pang C, Bian SN, Liu CH, Guo LL, Cui Y, Lin F, Yin X, Liu C, Guan K. [The characteristics and change of aeroallergens in children from 2015 to 2020 in a hospital of pediatric in Beijing]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:840-846. [PMID: 34304420 DOI: 10.3760/cma.j.cn112150-20210506-00441] [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: 11/05/2022]
Abstract
Objective: To analyze the characteristics of clinical distribution and change of aeroallergens in children with allergic diseases from 2015 to 2020. Methods: Children who visited Capital Institute of Pediatrics affiliated Children's Hospital, suspected of allergic diseases and received serum aeroallergens specific immunoglobulin E (sIgE) test were retrospectively enrolled (1 to 14 years old). sIgE was detected by Phadia1000 system with radioallergosorbent test fluorescent enzyme-linked immunoassay. The characteristics and change of the aeroallergens among the 6 years was analyzed. Enumeration data were expressed by percentage and categorical variables were compared by the independent samples t-test and Pearson χ2 test. Results: In total 4 608 tests (4 575 patients) of children were enrolled, the average age was (5.4±2.9) years old, with the median age of 5.0 years old. 3 176 were boys (68.9%), and 1 432 were girls (31.1%). 4 294 children were from the north of China (93.2%), 295 children were from the south of China (6.4%), and 19 children were from unknown regions (0.4%). In total the most common aeroallergen was mold mixture (1 956/4 457 tests, 43.9%) and Alternaria alternata (276/630 tests, 43.8%), followed by Artemisia (300/889 tests, 33.7%), Humulus scandens (12/38 tests, 31.6%) and grass mixture (909/2 874 tests, 31.6%). Among the 6 years, mold, grass pollen and tree pollen sensitization increased, and mold [38/130 (29.2%) vs 1 574/3 233 (48.7%)], grass pollen [11/77 (14.3%) vs 1 069/3 072 (34.8%)] increased significantly (χ2 was 18.953 and 49.559, respectively, P=0.000). Positive rate of tree pollen increased [1/10 (10.0%) vs 516/2 122 (24.3%)], but did not have statistical significance (χ²=1.111, P=0.292). Dust mite [36/146 (24.7%) vs 321/1 408 (22.8%)] and hair of pets [7/33 (21.2%) vs 321/1 408 (17.1%)] sensitization didn't change greatly (χ2 =0.258, P =0.611; χ2 =0.379, P =0.538). In 2015, the most common aeroallergens was mold (38/130, 29.2%), followed by dust mite (36/146, 24.7%), while in 2020, the most common aeroallergens was still mold (1 574/3 233, 48.7%), with grass pollen (1 069/3 072, 34.8%) and tree pollen (516/2 122, 24.3%) ranked after. Conclusion: Mold might be the most common aeroallergens in allergic children in Beijing area. With time went on, dust mite was gradually exceeded by grass pollen and tree pollen.
Collapse
Affiliation(s)
- C Pang
- Department of Otorhinolaryngology Head and Neck Surgery, Capital Institute of Pediatrics Affiliated Children's Hospital,Beijing 100020, China
| | - S N Bian
- Department of Allergy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College,Beijing 100730, China
| | - C H Liu
- Department of Allergy, Capital Institute of Pediatricsaffiliated Children's Hospital,Beijing 100020, China
| | - L L Guo
- Department of Information Center, Capital Institute of Pediatricsaffiliated Children's Hospital,Beijing 100020, China
| | - Y Cui
- Department of Information Center, Capital Institute of Pediatricsaffiliated Children's Hospital,Beijing 100020, China
| | - F Lin
- Department of Otorhinolaryngology Head and Neck Surgery, Capital Institute of Pediatrics Affiliated Children's Hospital,Beijing 100020, China
| | - X Yin
- Department of Otorhinolaryngology Head and Neck Surgery, Capital Institute of Pediatrics Affiliated Children's Hospital,Beijing 100020, China
| | - C Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Capital Institute of Pediatrics Affiliated Children's Hospital,Beijing 100020, China
| | - K Guan
- Department of Allergy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College,Beijing 100730, China
| |
Collapse
|
9
|
Pang C, Evans N, Papadopoulou A, Khalifa M, Tsui J, Hamilton G, Lim CS, Brookes J. O75: SINGLE CENTRE EXPERIENCE OF SIROLIMUS THERAPY IN HEAD AND NECK VASCULAR MALFORMATIONS. Br J Surg 2021. [DOI: 10.1093/bjs/znab117.075] [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] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Introduction
To assess the efficacy and safety of Sirolimus in the treatment of low-flow head and neck (H&N) vascular malformations
Method
Patients who presented to our tertiary referral clinic were assessed for eligibility. Suitable patients were commenced on Sirolimus at 0.8 mg/m2, administered orally twice daily, which was approved by our trust Drug and Therapeutic Committee. Patients were reviewed on a monthly basis for a total of six months with an additional one-month review to check for effects upon ceasing treatment. Efficacy and safety were measured through functional and radiological response, laboratory investigations and quality of life questionnaire (36-Item Short Form Health Survey (SF-36), Hospital Anxiety and Depression Scale (HADS) and Visual Analogue Score for Pain (VAS-P)).
Result
Seven patients (mean age 39 years, range 23-65 years) were recruited. One patient did not complete treatment due to intolerable side effects. All patients had a partial response with no patients showing disease progression or complete response. All post-treatment MRI scans showed stable disease with five patients demonstrating a decrease in lesion volume. Five patients reported return of symptoms at one-month post review upon discontinuation of treatment. No statistical significance (P>0.05) in all eight domains of SF-36, HADS, VAS-P and radiological vascular lesion volume between pre- and post-treatment. Most common reported side effects were mouth ulcers (n=2) and metabolic/laboratory abnormality (n=2)
Conclusion
Sirolimus is an effective and safe treatment for patients with complicated low-flow H&N vascular malformations. This provides an alternative treatment where interventional therapy is considered to be limited or challenging.
Take-home message
Sirolimus is an effective and safe treatment option for patients with complicated low-flow head and neck vascular malformations where interventional therapy is limited or challenging.
Collapse
Affiliation(s)
- C Pang
- Royal Free Vascular Malformation Service, Department of Vascular Surgery, Royal Free London NHS Foundation Trust, London, United Kingdom, London
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London, UK
| | - N Evans
- Royal Free Vascular Malformation Service, Department of Vascular Surgery, Royal Free London NHS Foundation Trust, London, United Kingdom, London
| | - A Papadopoulou
- Department of Interventional Radiology, Royal Free London NHS Foundation Trust, London, UK
| | - M Khalifa
- Department of Interventional Radiology, Royal Free London NHS Foundation Trust, London, UK
| | - J Tsui
- Royal Free Vascular Malformation Service, Department of Vascular Surgery, Royal Free London NHS Foundation Trust, London, United Kingdom, London
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London, UK
- NIHR UCLH Biomedical Research Centres, London, UK
| | - G Hamilton
- Royal Free Vascular Malformation Service, Department of Vascular Surgery, Royal Free London NHS Foundation Trust, London, United Kingdom, London
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London, UK
| | - CS Lim
- Royal Free Vascular Malformation Service, Department of Vascular Surgery, Royal Free London NHS Foundation Trust, London, United Kingdom, London
- Department of Surgical Biotechnology, Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London, UK
- NIHR UCLH Biomedical Research Centres, London, UK
| | - J Brookes
- Royal Free Vascular Malformation Service, Department of Vascular Surgery, Royal Free London NHS Foundation Trust, London, United Kingdom, London
- Department of Interventional Radiology, Royal Free London NHS Foundation Trust, London, UK
| |
Collapse
|
10
|
Wang Z, Pang C, Lu YX, Lin F, Gao Y, Chen JX. [Encephalopathy as the first manifestation: a case report of deep neck abscess in a child]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:387-389. [PMID: 33832199 DOI: 10.3760/cma.j.cn115330-20201016-00810] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- Z Wang
- Department of Otorhinolaryngology, Capital Institute of Pediatrics Children's Hospital, Beijing 100020, China
| | - C Pang
- Department of Otorhinolaryngology, Capital Institute of Pediatrics Children's Hospital, Beijing 100020, China
| | - Y X Lu
- Department of Otorhinolaryngology, Capital Institute of Pediatrics Children's Hospital, Beijing 100020, China
| | - F Lin
- Department of Otorhinolaryngology, Capital Institute of Pediatrics Children's Hospital, Beijing 100020, China
| | - Y Gao
- Department of Otorhinolaryngology, Capital Institute of Pediatrics Children's Hospital, Beijing 100020, China
| | - J X Chen
- Department of Neurology, Capital Institute of Pediatrics Children's Hospital, Beijing 100020, China
| |
Collapse
|
11
|
Zhang YQ, Chen X, Fu CL, Zhang W, Zhang DL, Pang C, Liu M, Wang JY. FENDRR reduces tumor invasiveness in prostate cancer PC-3 cells by targeting CSNK1E. Eur Rev Med Pharmacol Sci 2020; 23:7327-7337. [PMID: 31539119 DOI: 10.26355/eurrev_201909_18838] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Prostate cancer, one of the most common malignant tumors in urology, now has become a malignant disease that seriously threatens the health of men in China. Although there are a large number of clinical studies on the treatment of patients with prostate cancer, many patients have entered the advanced stage of diagnosis, and little is known about its pathogenesis. MATERIALS AND METHODS We identified a series of ncRNA and TF by differential expression analysis, co-expression analysis, enrichment analysis, connectivity analysis, and hypergeometric test strategies for prostate cancer expression genomes. RESULTS 53 modules related to prostate cancer PC-3 cells were obtained, involving module focusing of 4448 genes. Based on these modules, we predicted that miR-26a-5p, miR-130a-3p, miR-519d-3p, etc. have important regulatory effects on prostate cancer PC-3 cells. At the same time, a series of transcription factors (relating to RELA, SOX10, TP53, and TWIST2, etc.) were obtained and may play a key regulatory role in prostate cancer PC-3 cell-related modules. CONCLUSIONS These results suggest that FENDRR in prostate cancer may reduce tumor invasion in prostate cancer PC-3 cells by targeting CSNK1E, which may have favourable effort to better understand the underlying pathogenesis of prostate cancer and provide a tough theoretical basis for further studying prostate cancer.
Collapse
Affiliation(s)
- Y-Q Zhang
- Department of Urology Surgery, Beijing Hospital, National Center of Gerontology, Beijing, P.R. China. Yaqun Zhang, MD; e-mail:
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Li R, Narumi K, Chiba A, Hirano Y, Tsuya D, Yamamoto S, Saitoh Y, Okubo N, Ishikawa N, Pang C, Chen F, Amekura H. Matrix-material dependence on the elongation of embedded gold nanoparticles induced by 4 MeV C 60 and 200 MeV Xe ion irradiation. Nanotechnology 2020; 31:265606. [PMID: 32155610 DOI: 10.1088/1361-6528/ab7e70] [Citation(s) in RCA: 1] [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: 06/10/2023]
Abstract
We report the elongation of embedded Au nanoparticles (NPs) in three different matrices, i.e. amorphous carbon (a-C), crystalline indium tin oxide (InxSn1-xOz; ITO) and crystalline calcium fluoride (CaF2), under irradiations of 4 MeV C60 + cluster ions and 200 MeV Xe14+ ions. Under 4 MeV C60 cluster irradiation, strong sputtering is induced in CaF2 layer so that the whole the layer was completely lost at a fluence of 5 × 1013 ions cm-2. Au NPs were partly observed in the SiO2, probably due to the recoil implantation. Amorphous carbon (a-C) layer exhibits low sputtering loss even under 4 MeV C60 irradiation. However, the elongation in a-C layer was low. While the ITO layer showed a certain decrease in thickness under 4 MeV C60 irradiation, large elongation of Au NPs was observed under both 4 MeV C60 and 200 MeV Xe irradiation. The ITO layer preserved the crystallinity even after large elongation was induced. This is the first report of the elongation of metal NPs in a crystalline matrix.
Collapse
Affiliation(s)
- R Li
- Hydrogen Materials Engineering Group, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0003, Japan. School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Zhou YR, Pang C, Chen SL, Tang XF. [Doxycycline inhibits paraquat-induced pulmonary fibrosis via TGF-β1/Smad pathway]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:337-341. [PMID: 31177710 DOI: 10.3760/cma.j.issn.1001-9391.2019.05.004] [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 investigate the possible mechanism of doxycycline inhibiting paraquat-induced pulmonary fibrosis and provide a theoretical basis for its clinical application. Methods: Human lung fibroblast HFL1 cells were selected as the research object in the cell group. Divided into blank group, paraquat group, paraquat+doxycycline group. The expression of TGF-β1, a-SMA, Smad3 and Smad2 protein was detected by ELISA using 40 ml of paraquat 40 umol/L and 3 mg/L of oleic acid 10 mg/L. In the animal group, 120 healthy and clean SD rats were randomly divided into three groups: blank group, paraquat group, paraquat+doxycycline group. The expression of TGF-β1, a-SMA, Smad3 and Smad2 protein in lung tissue of mice at 1 day, 3 days, 7 days, 14 days and 21 days was detected by Elisa method. The expression of TGF-β1, a-SMA, Smad3 and Smad2 protein in lung tissue of 21-day mice was detected by Western Blotting. The pathological changes of lung tissue were observed by HE staining for 1 day, 3 days, 7 days, 14 days and 21 days. Results: In the cell group experiment, the expression of TGF-β1, a-SMA, Smad3 and Smad2 protein increased gradually with paraquat in the paraquat group, and the expression of TGF-β1, a-SMA, Smad3 and Smad2 protein was significantly higher than that in the blank group. The difference was statistically significant (P<0.05) . The expressions of TGF-β1, a-SMA, Smad3 and Smad2 in the paraquat+doxycycline group were significantly lower than those in the paraquat group, but still higher than the blank group, the difference was statistically significant (P<0.05) . Conclusion: Doxycycline inhibits paraquat-induced pulmonary fibrosis by inhibiting the expression of TGF-β1, a-SMA and Smad3, Smad2 proteins.
Collapse
Affiliation(s)
- Y R Zhou
- Shenyang Medical College, Shenyang 110002, China
| | - C Pang
- The Sencond Affiliated Hospital of Shenyang Medical College, Shenyang 110001, China
| | - S L Chen
- Shenyang Medical College, Shenyang 110002, China
| | - X F Tang
- Shenyang Medical College, Shenyang 110002, China
| |
Collapse
|
14
|
Wang ZX, Lin F, Li LS, Cui L, Guan K, Pang C. [Analysis of sensitization spectrum and clinical features of children with adenoid hypertrophy and perennial rhinitis]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:351-353. [PMID: 30970408 DOI: 10.13201/j.issn.1001-1781.2019.04.015] [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] [Received: 12/08/2018] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the sensitization spectrum and clinical features of children with adenoid hypertrophy and perennial rhinitis.Method:A total of 121 children with adenoidal hypertrophy and perennial rhinitis were enrolled in the ENT Department of the Children's Hospital of the Capital Institute of Pediatrics and the Allergy Department of Peking Union Medical College Hospital from July to October in 2017. Nasopharyngoscopy was performed, and specific IgE were measured by blood sampling, and the sensitization spectrum and clinical characteristics of the children were analyzed. Result: Adenoid hypertrophy combined with allergic rhinitis accounted for 64.5% of the total, mold sensitization was the most common, accounting for 78.2% of allergic rhinitis patients, including boys accounted for 67.2%, gender differences were statistically significant(P<0.05). Patients with allergic rhinitis had a more severe endoscopic appearance, with a higher proportion of 4 degree, accounting for 75.0% of the total number of children with 4 degree under the nasopharyngoscopy, and only 25.0% of children without defined allergens. There was a significant difference between this two groups(P<0.05). Conclusion: Allergic rhinitis is closely related to adenoid hypertrophy, and the effect of allergen on the clinical manifestations of patients with adenoid hypertrophy should be emphasized.
Collapse
Affiliation(s)
- Z X Wang
- Department of Allergy, Peking Union Medical College Hospital, Bejing, 100730, China
| | | | | | | | | | | |
Collapse
|
15
|
Soichot M, Pang C, Gourlain H, Bourgogne E, Delhotal B, Houze P, Megarbane B, Labat L. Intérêt de l’analyse toxicologique dans la prise en charge des transporteurs de drogues intracorporels. Toxicologie Analytique et Clinique 2018. [DOI: 10.1016/j.toxac.2018.04.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
16
|
Pang C, Liang JQ, Gu QL. [Effect of treating obstructive sleep apnea-hypopnea syndrome on chronic cough in children]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 52:586-591. [PMID: 28822411 DOI: 10.3760/cma.j.issn.1673-0860.2017.08.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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 understand the effect of treating obstructive sleep apnea hypopnea syndrome (OSAHS) on chronic cough in children. Methods: A total of 100 consecutive children with OSAHS diagnosed by polysomnography(PSG) and chronic cough were included in this study. All children underwent cough condition assessment, OSA-18 scales and MS-IOS before and after surgery, and all children were followed-up for 3 months. Children were separated into three groups according to the severity of OSAHS. Related parameters like Zr, Rf, R5, R20, X5, X35, Rc, Rp obtained from MS-IOS, OSA-18 scores and cough scores were compared between different groups using paired t-test or Wilcoxon sum test. Results: There existed significantly positive correlations between AHI and scores of OSA-18(r=0.653, P<0.01). AHI positively related to cough scores including diurnal(r=0.470, P<0.01)and nocturnal cough scores(r=0.459, P<0.01). Scores of OSA-18 had similarity in correlations with diurnal(r=0.527, P<0.01)and nocturnal cough scores(r=0.532, P<0.01). All children got improved in OSA-18 scales and cough scores after treatment. In details, the three groups were mild group(n=34), moderate group(n=37), severe group(n=29). OSA-18 scales decreased dramatically in each group after surgery, Z values were -5.014, -5.035, -4.624 respectively(P=0.000). Cough scores in day and night got reduced after treatment, Z values were -5.112, -5.102, -5.394, -5.374, -4.777, -4.770 in three groups. Rp in all children got alleviated after surgical management, Z were -3.150, -5.035, -5.374(P=0.000). Other parameters were analyzed using paired t test. Z5, R5, R20, R35 got reduced in all three groups.X5 got reduced in mild and moderate groups. Rc reduced only in the moderate group. Conclusions: OSAHS may be a trigger or inducer of chronic cough. Active treatment of OSAHS via surgery can improve the quality of children's life and alleviate the symptoms of cough in day and night.
Collapse
Affiliation(s)
- C Pang
- Department of Otorhinolaryngology, Capital Institute of Pediatrics Affiliated Children's Hospital, Beijing 100020, China
| | - J Q Liang
- Department of Otorhinolaryngology, Capital Institute of Pediatrics Affiliated Children's Hospital, Beijing 100020, China
| | - Q L Gu
- Department of Otorhinolaryngology, Capital Institute of Pediatrics Affiliated Children's Hospital, Beijing 100020, China
| |
Collapse
|
17
|
Yang XY, Zhang M, Luo XP, Wang JJ, Yin L, Pang C, Wang GA, Shen YX, Wu DT, Zhang L, Ren YC, Wang BY, Zhang HY, Zhou JM, Han CY, Zhao Y, Feng TP, Hu DS, Zhao JZ. [Body mass index, waist circumference and waist-to-height ratio associated with the incidence of type 2 diabetes mellitus: a cohort study]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 50:328-33. [PMID: 27029364 DOI: 10.3760/cma.j.issn.0253-9624.2016.04.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the association between body mass index (BMI), waist circumference (WC), waist-to-height ratio (WHtR), and the incidence risk of type 2 diabetes mellitus (T2DM). METHODS In total, 20 194 participants ≥18 years old were selected randomly by cluster sampling from two township (town) of the county in Henan province from July to August of 2007 and July to August of 2008 and the investigation included questionnaires, anthropometric measurements, fasting plasma glucose, and lipid profile examination were performed at baseline; 17 236 participants were enrolled in this cohort study. 14 720 (85.4%) were followed up from July to August 2013 and July to October 2014. Finally, 11 643 participants (4 301 males and 7 342 females) were included in this study. Incidence density and Cox proportional hazards regression models were used to evaluate the risk of T2DM associated with baseline BMI, WC, WHtR, and their dynamic changes. RESULTS After average of 6.01 years following up for 11 643 participants, 613 developed T2DM and the incidence density was 0.89 per 100 person-years. After adjusted for baseline sex, age, smoking, drinking, family history of diabetes, as well as the difference of fasting plasma-glucose (FPG), total cholesterol (TC), triglyceride (TG), high density lipoprotein cholesterol (HDL-C), systolic blood pressure (SBP), diastolic blood pressure (DBP) between baseline and follow-up, Cox Proportional-Hazards regression analysis indicated that T2DM risk of baseline BMI overweight group, BMI obesity group, abnormal WC group and abnormal WHtR group were significantly higher than that of the corresponding baseline normal groups , and the incidence risk of T2DM reached the highest for those whose baseline BMI, WC and WHtR were all abnormal, the corresponding HR (95%CI) were 2.05 (1.62-2.59), 3.01 (2.33-3.90), 2.34 (1.89-2.90), 2.88 (2.21-3.74), 3.32 (2.50-4.40), respectively. Whether baseline BMI/WC was normal or not, T2DM risk increased if baseline WHtR was abnormal, and the HR (95%CI) of baseline normal BMI/abnormal WHtR group, baseline abnormal BMI/abnormal WHtR group, baseline normal WC/abnormal WHtR group, baseline abnormal WC/abnormal WHtR group were 1.88 (1.29-2.74), 3.08 (2.34-4.05), 2.15(1.53-3.00), 3.22 (2.45-4.23), respectively. The analysis for dynamic changes of BMI, WC, and WHtR indicated that in baseline normal WC or WHtR group, T2DM risk increased when baseline normal WC or WHtR developed abnormal at follow-up, and the corresponding HR (95%CI) were 1.79 (1.26-2.55), 2.12(1.32-3.39), respectively. In baseline abnormal WC or WHtR group, T2DM risk decresed when baseline abnormal WC or WHtR reversed to normal at follow-up, and the corresponding HR (95%CI) were 2.16 (1.42-3.29), 2.62 (1.63-4.20), respectively. CONCLUSION BMI, WC, and WHtR were associated with increased T2DM risk. The more abnormal aggregation of BMI, WC, and WHtR presents, the higher T2DM risk was. T2DM risk could be decreased when abnormal WC or WHtR reversed to normal.
Collapse
Affiliation(s)
- X Y Yang
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Zhang HY, Shi WH, Zhang M, Yin L, Pang C, Feng TP, Zhang L, Ren YC, Wang BY, Yang XY, Zhou JM, Han CY, Zhao Y, Zhao JZ, Hu DS. [Establishing a noninvasive prediction model for type 2 diabetes mellitus based on a rural Chinese population]. Zhonghua Yu Fang Yi Xue Za Zhi 2016; 50:397-403. [PMID: 27141894 DOI: 10.3760/cma.j.issn.0253-9624.2016.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To provide a noninvasive type 2 diabetes mellitus (T2DM) prediction model for a rural Chinese population. METHODS From July to August, 2007 and July to August, 2008, a total of 20 194 participants aged ≥18 years were selected by cluster sampling technique from a rural population in two townships of Henan province, China. Data were collected by questionnaire interview, anthropometric measurement, and fasting plasma glucose and lipid profile examination. A total 17 265 participants were followed up from July to August, 2013 and July to October, 2014. Finally, 12 285 participants were selected for analysis. Data for these participants were randomly divided into a derivation group (derivation dataset, n= 6 143) and validation group (validation dataset, n=6 142) by 1∶1, respectively. Randomization was carried out by the use of computer-generated random numbers. A Cox regression model was used to analyze risk factors of T2DM in the derivation dataset. A T2DM prediction model was established by multiplying β by 10 for each significant variable. After the total score was calculated by the model, analysis of the receiver operating characteristic (ROC) curve was performed. The area under the ROC curve (AUC) was used for evaluating model predictability. Furthermore, the model's predictability was validated in the validation dataset and compared with the Finnish Diabetes Risk Score (FINDRISC) model. RESULTS A total 779 of 12 285 participants developed T2DM during the 6-year study period. The incidence rate was 6.12% in the derivation dataset (n=376) and 6.56% in the validation dataset (n=403). The difference was not statistically significant (χ(2)=1.00, P=0.316). A total of four noninvasive T2DM prediction models were established using the Cox regression model. The ROCs of the risk score calculated by the prediction models indicated that the AUCs of these models were similar (0.67-0.70). The AUC and Youden index of model 4 was the highest. The optimal cut-off value, sensitivity, specificity, and Youden index were scores of 25, 65.96%, 66.47%, and 0.32, respectively. Age, sleep time, BMI, waist circumference, and hypertension were selected as predictive variables. Using age<30 years as reference, β values were 1.07, 1.58, and 1.67 and assigned scores were 11, 16, and 17 for age groups 30-44, 45-59, and ≥60 years, respectively. Using sleep time<8.0 h/d as reference, the β value and assigned score were 0.27 and 3, respectively, for sleep time ≥10.0 h/d. Using BMI 18.5-23.9 kg/m(2) as reference, β values were 0.53 and 1.00 and assigned scores 5 and 10, respectively, for BMI 24.0-27.9 kg/m(2), and ≥28.0 kg/m(2). Using waist circumference <85 cm for males/< 80 cm for females as reference, β values were 0.44 and 0.65 and assigned scores 4 and 7, respectively, for 85 cm ≤ waist circumference <90 cm for males/80 cm≤ waist circumference <85 cm for females, and waist circumference ≥90 cm for males/≥85 cm for females. Using nonhypertension as reference, the respective β value and assigned score were 0.34 and 3 for hypertension. The AUC performance of this model and the FINDRISC model was 0.66 and 0.64 (P=0.135), respectively, in the validation dataset. CONCLUSION Based on this cohort study, a noninvasive prediction model that included age, sleep time, BMI, waist circumference, and hypertension was established, which is equivalent to the FINDRISC model and applicable to a rural Chinese population.
Collapse
Affiliation(s)
- H Y Zhang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Qiu MJ, Tian H, Pang C, Yang ZJ, Li CQ, Xu L. The curative effects of LPN combined LCA in treating with middle and advanced renal cancer. Eur Rev Med Pharmacol Sci 2016; 20:584-588. [PMID: 26957257] [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: 06/05/2023]
Abstract
OBJECTIVE To discuss the curative effects of laparoscopy partial nephrectomy (LPN) combined with laparoscopy cryoablation (LCA) in treating renal cancer. PATIENTS AND METHODS A total of 58 patients that were diagnosed with phase III-IV renal cancer in the Hospital from February 2013 to October 2014 were enrolled in this study. After obtaining the approval of Ethics Committee of the Hospital as well as the informed consent of the patients and their relatives, the patients were randomly divide into two groups: control group consisted of 24 patients, who were treated with LPN + chemo radiotherapy and the observation group consisted of 34 patients, who were treated with LPN in combination of LCA + chemo radiotherapy. RESULTS The rate of successful operation was significantly higher in the observation group than in control group and the prevalence of per procedural complications in observation group was significantly lower than that of control group, and these differences had statistical significance (p < 0.05). Glomerular filtration rate (eGFR) after operation and 6-month follow-up in observation group was significantly higher than that in control group, and the level of serum creatinine (sCr) was significantly lower compared to the control group and the differences had statistical significance (p < 0.05). Follow-up survival rate of patients in the observation group was significantly higher than that of control group, recurrence rate and recurrence time of patients in the observation group was significantly lower than those of control group and the difference had statistical significance (p < 0.05). CONCLUSIONS LPN combined LCA therapy was quite effective in treating with middle and advanced renal cancer. Compared with pure LPN therapy, LPN combined LCA therapy could significantly improve the surgical effects, retain the functions of the renal unit and improve the patients' prognosis.
Collapse
Affiliation(s)
- M-J Qiu
- Department of Urology, the Affiliated Hexian Memorial Hospital of Southern Medical University Guangzhou, Guangdong, China.
| | | | | | | | | | | |
Collapse
|
20
|
Wang B, Zhuang R, Luo X, Yin L, Pang C, Feng T, You H, Zhai Y, Ren Y, Zhang L, Li L, Zhao J, Hu D. Prevalence of Metabolically Healthy Obese and Metabolically Obese but Normal Weight in Adults Worldwide: A Meta-Analysis. Horm Metab Res 2015; 47:839-45. [PMID: 26340705 DOI: 10.1055/s-0035-1559767] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The objective of the present study was to summarize the prevalence and influencing factors of metabolically healthy obese (MHO) and metabolically obese but normal weight (MONW) among people ≥ 18 years old in the general population worldwide. We searched for studies of the prevalence of MHO and MONW published in English and Chinese up to October 2013. Pooled prevalence estimates were calculated by a random-effects model according to a Q test. The effects of gender, region, age, sample size, smoking, and alcohol consumption on MHO and MONW were analyzed. Differences between subgroups were assessed by chi-square test. Publication bias was estimated by Egger's test. Studies of MHO and MONW showed heterogeneity (I(2)=99.4% and I(2)=99.7%, respectively). The overall prevalence of MHO and MONW was 7.27% (95% CI 5.92-8.90%) and 19.98% (95% CI 16.54-23.94%), respectively. American populations had the highest MHO prevalence and European populations the highest MONW prevalence. Different patterns of MHO and MONW were observed in the subgroup analysis with respect to gender, age, sample size, smoking, alcohol consumption, and metabolically healthy criteria. The prevalence of both MHO and MONW were affected by gender, region, age, sample size, smoking, alcohol consumption, and metabolically healthy criteria, but studies showed high heterogeneity.
Collapse
Affiliation(s)
- B Wang
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, P. R. China
| | - R Zhuang
- School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, P. R. China
| | - X Luo
- Department of Preventive Medicine, Shenzhen University School of Medicine, Shenzhen, P. R. China
| | - L Yin
- Department of Prevention and Health Care, Military Hospital of Henan Province, Zhengzhou, P. R. China
| | - C Pang
- Department of Prevention and Health Care, Military Hospital of Henan Province, Zhengzhou, P. R. China
| | - T Feng
- Department of Prevention and Health Care, Military Hospital of Henan Province, Zhengzhou, P. R. China
| | - H You
- Department of Blood Transfusion, Xijing Hospital, The Fourth Military Medical University, Xian, P. R. China
| | - Y Zhai
- Department of Public Health Surveillance and Advisory, Zhejiang Provincial Centre for Disease Control and Prevention, Hangzhou, P. R. China
| | - Y Ren
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, P. R. China
| | - L Zhang
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, P. R. China
| | - L Li
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, P. R. China
| | - J Zhao
- Department of Prevention and Health Care, Military Hospital of Henan Province, Zhengzhou, P. R. China
| | - D Hu
- Department of Preventive Medicine, Shenzhen University School of Medicine, Shenzhen, P. R. China
| |
Collapse
|
21
|
Pang C, Chu Y. Recurrence of Liver Transplantation Combined With Lung and Diaphragm Resection for Alveolar Echinococcosis: A Case Report. Transplant Proc 2015; 47:2278-81. [DOI: 10.1016/j.transproceed.2015.06.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Accepted: 06/16/2015] [Indexed: 11/16/2022]
|
22
|
Pang C, Sharma D, Sankar T. Spontaneous regression of Merkel cell carcinoma: A case report and review of the literature. Int J Surg Case Rep 2014; 7C:104-8. [PMID: 25603307 PMCID: PMC4336382 DOI: 10.1016/j.ijscr.2014.11.027] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 11/07/2014] [Accepted: 11/08/2014] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Merkel cell carcinoma (MCC) is a rare and highly aggressive primary cutaneous neuroendocrine carcinoma, most often occurring in the elderly. Recurrence is frequent and in 40% of cases regional and distant metastases develop. Despite this, there have been reports of spontaneous regression. We report the first case of MCC with primary complete spontaneous regression of the nose in an 86-year-old woman following an incisional biopsy. PRESENTATION OF CASE An 86-year-old woman presented with a violaceous lump on the left side of the nose measuring 25 × 25 mm. Incisional biopsy of the lesion showed MCC and immunohistochemistry confirmed diagnosis. Following an 8-week period the lesion completely disappeared and histology did not show any residual MCC but immunohistochemistry demonstrated a mixture of T and B cells. DISCUSSION Complete spontaneous regression (CSR) is rare. The literature documents 22 similar cases of CSR of MCC. From this case report and previous literature the most likely reason for regression is a T-cell mediated immune response. CONCLUSION To the best of our knowledge, this is the first described case of MCC with primary CSR of the nose. Exact mechanism of regression remains unclear. Further research is needed in identifying pathway of immune response and possible immunotherapy as a cure.
Collapse
Affiliation(s)
- C Pang
- University of Leicester, Medical school, United Kingdom.
| | - D Sharma
- Department of Histopathology, Leicester Royal Infirmary Hospital, United Kingdom.
| | - T Sankar
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Kettering General Hospital, United Kingdom.
| |
Collapse
|
23
|
Giorgadze T, Kanhere R, Pang C, Ganote C, Miller LE, Tabaczka P, Brown E, Husain M. Small cell carcinoma of the cervix in liquid-based Pap test: Utilization of split-sample immunocytochemical and molecular analysis. Diagn Cytopathol 2010; 40:214-9. [PMID: 20891001 DOI: 10.1002/dc.21542] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Accepted: 08/09/2010] [Indexed: 11/09/2022]
Affiliation(s)
- T Giorgadze
- Department of Pathology, Wayne State University, Detroit, Michigan 48201-2018, USA.
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Song F, Parekh S, Hooper L, Loke YK, Ryder J, Sutton AJ, Hing C, Kwok CS, Pang C, Harvey I. Dissemination and publication of research findings: an updated review of related biases. Health Technol Assess 2010; 14:iii, ix-xi, 1-193. [PMID: 20181324 DOI: 10.3310/hta14080] [Citation(s) in RCA: 538] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVES To identify and appraise empirical studies on publication and related biases published since 1998; to assess methods to deal with publication and related biases; and to examine, in a random sample of published systematic reviews, measures taken to prevent, reduce and detect dissemination bias. DATA SOURCES The main literature search, in August 2008, covered the Cochrane Methodology Register Database, MEDLINE, EMBASE, AMED and CINAHL. In May 2009, PubMed, PsycINFO and OpenSIGLE were also searched. Reference lists of retrieved studies were also examined. REVIEW METHODS In Part I, studies were classified as evidence or method studies and data were extracted according to types of dissemination bias or methods for dealing with it. Evidence from empirical studies was summarised narratively. In Part II, 300 systematic reviews were randomly selected from MEDLINE and the methods used to deal with publication and related biases were assessed. RESULTS Studies with significant or positive results were more likely to be published than those with non-significant or negative results, thereby confirming findings from a previous HTA report. There was convincing evidence that outcome reporting bias exists and has an impact on the pooled summary in systematic reviews. Studies with significant results tended to be published earlier than studies with non-significant results, and empirical evidence suggests that published studies tended to report a greater treatment effect than those from the grey literature. Exclusion of non-English-language studies appeared to result in a high risk of bias in some areas of research such as complementary and alternative medicine. In a few cases, publication and related biases had a potentially detrimental impact on patients or resource use. Publication bias can be prevented before a literature review (e.g. by prospective registration of trials), or detected during a literature review (e.g. by locating unpublished studies, funnel plot and related tests, sensitivity analysis modelling), or its impact can be minimised after a literature review (e.g. by confirmatory large-scale trials, updating the systematic review). The interpretation of funnel plot and related statistical tests, often used to assess publication bias, was often too simplistic and likely misleading. More sophisticated modelling methods have not been widely used. Compared with systematic reviews published in 1996, recent reviews of health-care interventions were more likely to locate and include non-English-language studies and grey literature or unpublished studies, and to test for publication bias. CONCLUSIONS Dissemination of research findings is likely to be a biased process, although the actual impact of such bias depends on specific circumstances. The prospective registration of clinical trials and the endorsement of reporting guidelines may reduce research dissemination bias in clinical research. In systematic reviews, measures can be taken to minimise the impact of dissemination bias by systematically searching for and including relevant studies that are difficult to access. Statistical methods can be useful for sensitivity analyses. Further research is needed to develop methods for qualitatively assessing the risk of publication bias in systematic reviews, and to evaluate the effect of prospective registration of studies, open access policy and improved publication guidelines.
Collapse
Affiliation(s)
- F Song
- School of Medicine, Health Policy and Practice, University of East Anglia, Norwich, UK
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Zhang XM, Liu Y, Bae H, Pang C, Yu M. Phase modulation with micromachined resonant mirrors for low-coherence fiber-tip pressure sensors. Opt Express 2009; 17:23965-23974. [PMID: 20052107 DOI: 10.1364/oe.17.023965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This letter presents a simple phase modulation scheme for interrogation of low-coherence interferometry based fiber-tip pressure sensors to enable real-time monitoring and miniaturization of the entire sensor system. The key idea is to introduce a sinusoidal modulation signal and retrieve the sensing cavity length change using a simple algorithm, without resorting to any time information. In experiments, phase modulation has been achieved by using a silicon-micromachined tunable Fabry-Pérot interferometer, which is integrated with a light source and a photodiode onto a single chip. Compared with the conventional interrogation methods, this scheme possesses the merits of being less susceptible to disturbance, easy control and easy miniaturization, making it particularly suitable for sensing in constrained spaces and harsh environments.
Collapse
Affiliation(s)
- X M Zhang
- Department of Applied Physics, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong S.A.R., China
| | | | | | | | | |
Collapse
|
26
|
Pang C, Gesuele F, Bruyant A, Blaize S, Lérondel G, Royer P. Enhanced light coupling in sub-wavelength single-mode silicon on insulator waveguides. Opt Express 2009; 17:6939-6945. [PMID: 19399066 DOI: 10.1364/oe.17.006939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report on NIR efficient end-coupling in single-mode silicon on insulator waveguides. Efficient coupling has been achieved using Polymer-Tipped Optical Fibers (PTOF) of adaptable radius of curvature (ROC). When compared with commercial micro lenses, systematic studies as a function of PTOF ROC, lead for subwavelength PTOF to a coupling factor enhancement as high as 2.5. This experimental behavior is clearly corroborated by radial FDTD simulations and an absolute coupling efficiency of about 50% is also estimated.
Collapse
Affiliation(s)
- C Pang
- Laboratoire de Nanotechnologies et d'Instrumentation Optique, ICD, CNRS (FRE2848), Université de Technologie de Troyes, Troyes, France
| | | | | | | | | | | |
Collapse
|
27
|
Jia WP, Pang C, Chen L, Bao YQ, Lu JX, Lu HJ, Tang JL, Wu YM, Zuo YH, Jiang SY, Xiang KS. Epidemiological characteristics of diabetes mellitus and impaired glucose regulation in a Chinese adult population: the Shanghai Diabetes Studies, a cross-sectional 3-year follow-up study in Shanghai urban communities. Diabetologia 2007; 50:286-92. [PMID: 17180353 DOI: 10.1007/s00125-006-0503-1] [Citation(s) in RCA: 159] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2006] [Accepted: 09/26/2006] [Indexed: 01/15/2023]
Abstract
AIMS/HYPOTHESIS To estimate the prevalence and incidence of diabetes mellitus and impaired glucose regulation (IGR) in a Chinese population aged 20-94 years. SUBJECTS AND METHODS A group of 5,628 randomly selected adults, aged 20-94 years, living in the Huayang and Caoyang communities in Shanghai, China, were investigated between 1998 and 2001. During 2002-04, 2,666 subjects were followed up. All the participants underwent anthropometric measurements, blood biochemical analyses and a 75-g OGTT. RESULTS Based on the 2000 census data of China, the age-standardised prevalences were 6.87% for diabetes and 8.53% for IGR at baseline. More than two in five cases with diabetes were undiagnosed. The age-adjusted prevalence of diabetes and IGR increased with age. The age-adjusted prevalences of hypertension, dyslipidaemia and overweight in males were significantly higher (p < 0.001) than in females. The 3-year cumulative incidence rates of diabetes and IGR were 4.96 and 11.10%, respectively. The relative risk of developing diabetes was significantly higher in subjects with IGR than in subjects with NGT (p < 0.001). CONCLUSIONS/INTERPRETATION The prevalence and incidence rates for diabetes or IGR have increased dramatically over the last decades, especially in younger age groups. A large proportion of cases are undiagnosed. We strongly recommend that population-based diabetes screening programmes should be implemented and generalised for younger people.
Collapse
Affiliation(s)
- W P Jia
- Department of Endocrinology and Metabolism, Shanghai Jiaotong University, Affiliated Sixth People's Hospital, Shanghai Diabetes Institute, Shanghai Clinical Center of Diabetes, 600 Yishan Road, Shanghai, 200233, China.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Zhang X, Liang X, Yang B, Chen M, Huang F, Pang C, Qin G, Senatore EM, Presicce GA. 321 PREGNANCIES ESTABLISHED FOLLOWING TRANSFER OF IN VITRO-PRODUCED FRESH AND FROZEN - THAWED BUFFALO (BUBALUS BUBALIS) EMBRYOS. Reprod Fertil Dev 2007. [DOI: 10.1071/rdv19n1ab321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The objective of this study was to evaluate the feasibility of obtaining pregnancies in the buffalo (Bubalus bubalis) species, following transfer of fresh and frozen–thawed in vitro-produced embryos during the months of April and May in southern China. Embryos produced from oocytes recovered by ovum pickup (OPU), from Murrah and Nili-Ravi buffaloes, were transferred into synchronized local F1 swamp � Murrah/Nili-Ravi heifers to establish pregnancies. In vitro maturation (IVM) was performed in 50-�L droplets of TCM-199 supplemented with 10% FBS, 0.5 �g mL-1 of LH, 5 �g mL-1 of FSH, and 1 �g mL-1 of estradiol in a humidified gas atmosphere of 5% CO2 in air at 39�C for 22 to 24 h. A concentration of 2 million spermatozoa was prepared in TALP supplemented with 0.6% BSA fraction V, 60 �g mL-1 of heparin, 0.2 mM penicillamine, and 0.1 mM hypotaurine, and co-incubated in 50-�L droplets up to 24 h. Co-culture on granulosa cell monolayer in TCM-199 supplemented with 10% FBS (GIBCO, Grand Island, NY), 0.25 mM Na pyruvate, and 50 �g mL-1 of kanamicin was allowed up to 8 days. A total of 923 antral follicles were punctured and 647 cumulus–oocyte complexes (COCs) were recovered (70%) over 3 replicates on 40 buffalo donors in twice-weekly collections. A total of 462 COCs were selected based on the presence of at least one layer of granulosa cells and were used for IVM and IVF, with a resulting cleavage of 257 (55.6%), leading to 22 morula (4.7%) and 93 blastocysts (20.1%). Embryo development was evaluated from Days 6 to 8, and grades 1 and 2 blastocysts to expanding blastocysts were used for transfer as fresh or following freezing and thawing. Recipients were synchronized by the Ovsynch protocol, and to match the recipient estrous cycle to the stage of in vitro embryo development, a second gonadotropin-releasing hormone was administered to recipients at the time of OPU on donors. For both fresh and frozen–thawed embryos, each recipient received 2 embryos into the uterine horn ipsilateral to the ovary bearing the corpus luteum. Following the Ovsynch protocol, a total of 26 out of 47 recipients (57.4%) were found to be suitable as recipients by palpation per rectum, receiving 52 fresh embryos and resulting in 7 pregnancies (26.9%). Thirty embryos were cryopreserved by conventional freezing using 1.8 M ethylene glycol and a freezing protocol, from seeding to plunging into liquid nitrogen, of -0.3�C min. Subsequently, embryos were transferred following thawing into 15 out of 20 recipients originally subjected to the Ovsynch protocol. Only 2 recipients were diagnosed as pregnant (13.3%). No statistical difference in pregnancy rate was found following the transfer of fresh vs. frozen–thawed embryos (P > 0.05). Further improvements are needed to optimize the establishment of pregnancies. A closer monitoring by ultrasound of recipients subjected to synchronization protocols will favor a better selection of more suitable animals.
Collapse
|
29
|
Liang X, Zhang X, Yang B, Chen M, Huang F, Pang C, Liao C, Qin G, Wei S, Yang C. Repeated Ovum Pick-Up and In-vitro Embryo Production in Buffalo. Italian Journal of Animal Science 2007. [DOI: 10.4081/ijas.2007.s2.759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
30
|
Abstract
This work presents a new electrolysis-based microelectromechanical systems (MEMS) diaphragm actuator. Electrolysis is a technique for converting electrical energy to pneumatic energy. Theoretically electrolysis can achieve a strain of 136 000% and is capable of generating a pressure above 200 MPa. Electrolysis actuators require modest electrical power and produce minimal heat. Due to the large volume expansion obtained via electrolysis, small actuators can create a large force. Up to 100 µm of movement was achieved by a 3 mm diaphragm. The actuator operates at room temperature and has a latching and reversing capability.
Collapse
Affiliation(s)
- C Pang
- Caltech Micromachining Lab, California Institute of Technology, Pasadena, CA 91125, USA
| | | | | | | |
Collapse
|
31
|
Tougas G, Spaziani R, Hollerbach S, Djuric V, Pang C, Upton AR, Fallen EL, Kamath MV. Cardiac autonomic function and oesophageal acid sensitivity in patients with non-cardiac chest pain. Gut 2001; 49:706-12. [PMID: 11600476 PMCID: PMC1728517 DOI: 10.1136/gut.49.5.706] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Acid reflux can elicit non-cardiac chest pain (NCCP), possibly through altered visceral sensory or autonomic function. The interactions between symptoms, autonomic function, and acid exposure are poorly understood. AIM To examine autonomic function in NCCP patients during exposure to oesophageal acid infusion. SUBJECTS AND METHODS Autonomic activity was assessed using power spectral analysis of heart rate variability (PSHRV), before and during oesophageal acidification (0.1 N HCl), in 28 NCCP patients (40.5 (10) years; 13 females) and in 10 matched healthy controls. Measured PSHRV indices included high frequency (HF) (0.15-0.5 Hz) and low frequency (LF) (0.06-0.15 Hz) power to assess vagal and sympathetic activity, respectively. RESULTS A total of 19/28 patients had angina-like symptoms elicited by acid. There were no significant manometric changes observed in either acid sensitive or insensitive patients. Acid sensitive patients had a higher baseline heart rate (82.9 (3.1) v 66.7 (3.5) beats/min; p<0.005) and lower baseline vagal activity (HF normalised area: 31.1 (1.9)% v 38.9 (2.3)%; p< 0.03) than acid insensitive patients. During acid infusion, vagal cardiac outflow increased (p<0.03) in acid sensitive but not in acid insensitive patients. CONCLUSIONS Patients with angina-like pain during acid infusion have decreased resting vagal activity. The symptoms elicited by perception of acid are further associated with a simultaneous increase in vagal activity in keeping with a vagally mediated pseudoaffective response.
Collapse
Affiliation(s)
- G Tougas
- Division of Gastroenterology, McMaster University, Hamilton, Ontario, Canada.
| | | | | | | | | | | | | | | |
Collapse
|
32
|
Shao X, Pang C, Su Q. A novel method to calculate the approximate derivative photoacoustic spectrum using continuous wavelet transform. Fresenius J Anal Chem 2000; 367:525-9. [PMID: 11225825 DOI: 10.1007/s002160000404] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A novel method based on continuous wavelet transform (CWT) using Haar wavelet function for approximate derivative calculation of analytical signals is proposed and successfully used in processing the photoacoustic signal. An approximate nth derivative of an analytical signal can be obtained by applying n times of the wavelet transform to the signal. The results obtained from four other different methods--the conventional numerical differentiation, the Fourier transform method, the Savitzky-Golay method, and the discrete wavelet transform (DWT) method--were compared with the proposed CWT method; it was demonstrated that all the results are almost the same for signals without noise, but the proposed CWT method is superior to the former four methods for noisy signals. The approximate first and second derivative of the photoacoustic spectrum of Pr(Gly)3Cl3.3H2O and PrCl3.6H2O were obtained using the proposed CWT method; the results are satisfactory.
Collapse
Affiliation(s)
- X Shao
- Department of Chemistry, University of Science and Technology of China, P.R. China.
| | | | | |
Collapse
|
33
|
Yu XJ, Yang TD, Pang C. [Weightlessness and heat stress on astronauts]. Space Med Med Eng (Beijing) 2000; 13:70-3. [PMID: 12214617] [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: 02/26/2023]
Abstract
Thermal emergency situations have more than once been encountered since the beginning of manned space flights in 1961. This article contemplates human thermal tolerance in weightlessness as complicated with headward [correction of headword] fluid shifts, plasma volume loss, cardiovascular deconditioning, reduced exercise capacity and energy metabolism changes, etc. With these considerations, it is necessary to further investigate the thermoregulation in spaceflight for the health and safety of astronauts.
Collapse
Affiliation(s)
- X J Yu
- Institute of Space Medico-Engineering, Beijing, China
| | | | | |
Collapse
|
34
|
Chan L, Mak Y, Tomlinson B, Baum L, Wu X, Masarei J, Pang C. Compound heterozygosity of Leu252Val and Leu252Arg causing lipoprotein lipase deficiency in a chinese patient with hypertriglyceridemia. Eur J Clin Invest 2000; 30:33-40. [PMID: 10619999 DOI: 10.1046/j.1365-2362.2000.00587.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND We investigated lipoprotein lipase (LPL) gene mutations in a Chinese male with severe hypertriglyceridemia and recurrent pancreatitis. METHODS We screened for LPL sequence mutation in the LPL gene in this patient, his relatives and 160 unrelated hypertriglyceridaemic subjects. We determined the postheparin plasma LPL activity of subjects carrying a LPL mutation and studied the in vitro expression of mutant LPL in COS-1 cells. RESULTS The proband was found to be a compound heterozygote for a novel Leu252Val and a reported Leu252Arg mutation in the LPL gene. He had low plasma levels of postheparin LPL activity and mass. The two mutations segregated independently in his family. In vitro expression analysis showed that Leu252Arg abolished both the catalytic function and secretion of LPL, while Leu252Val abolished the catalytic function but only reduced secretion by about half. We have also detected heterozygous Leu252Val and Leu252Arg mutations each in one hypertriglyceridaemic individual. CONCLUSION These results indicated that the leucine 252 is critical for the catalytic activity and secretion of LPL. Why the substitution by valine instead of arginine resulted only in a partial suppression of LPL secretion, remains to be investigated. Leu252Val and Leu252Arg are the likely cause of hypertriglyceridemia in these subjects because of their deleterious effects on LPL activity or secretion. Leu252Val/Leu252Arg is the first compound heterozygous mutation known to occur in the same codon of the LPL gene. So far they are found only in Chinese.
Collapse
Affiliation(s)
- L Chan
- Chinese University of Hong Kong, Hong Kong
| | | | | | | | | | | | | |
Collapse
|
35
|
Pang C, Kong L. [Kaposi's sarcoma of eyelid and conjunctiva]. Zhonghua Yan Ke Za Zhi 1999; 35:262-4, 14. [PMID: 11835817] [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: 02/23/2023]
Abstract
OBJECTIVE To investigate the clinical and histopathological features of ocular adnexal Kaposi's sarcoma. METHODS 12 consecutive cases of ocular adnexal Kaposi's sarcoma confirmed histopathologically were retrospectively analyzed from Ndola Central Hospital of Zambia in January, 1995-May, 1996. Histopathologic sections of 6 cases were reviewed. RESULTS Among the 12 patients who were all young African males, the serum samples of 4 patients showed positive for human immunodeficiency virus (HIV) test. Most patients had acquired immunodeficiency virus syndrome (AIDS) related symptoms. CONCLUSIONS Ocular adnexal Kaposi's sarcoma is a common ocular manifestation in AIDS and may be the first sign. It is classified into three stages clinically and histopathologically, that is a continuous process.
Collapse
Affiliation(s)
- C Pang
- Henan Institute of Ophthalmology, Zhengzhou 450003
| | | |
Collapse
|
36
|
Zhong N, Ju W, Xu W, Ye L, Shen Y, Wu G, Chen SH, Jin R, Hu XF, Yang A, Liu X, Poon P, Pang C, Zheng Y, Song L, Zhao P, Fu B, Gu H, Brown WT. Frequency of the fragile X syndrome in Chinese mentally retarded populations is similar to that in Caucasians. Am J Med Genet 1999; 84:191-4. [PMID: 10331588 DOI: 10.1002/(sici)1096-8628(19990528)84:3<191::aid-ajmg3>3.0.co;2-8] [Citation(s) in RCA: 25] [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] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Fragile X syndrome is recognized as the most common inherited cause of mental retardation in western countries. The prevalence of the fragile X syndrome in Asian populations is uncertain. We report a multi-institutional collaborative study of molecular screening for the fragile X syndrome from 1,127 Chinese mentally retarded (MR) individuals. We found that 2.8% of the Chinese MR population screened by DNA analysis had the fragile X full mutation. Our screening indicated that the fragile X syndrome prevalence was very close to that of Caucasian subjects. In addition, we found that 62.5% of fragile X chromosomes had a single haplotype for DXS548-FRAXAC1 (21-18 repeats) which was present in only 9.7% of controls. This unique distribution of microsatellite markers flanking the FMR1 CGG repeats suggests that the fragile X syndrome in Chinese populations, as in the Caucasian, may also be derived from founder chromosomes.
Collapse
Affiliation(s)
- N Zhong
- Department of Human Genetics, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, New York 10314, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Ding Z, Shi H, Pang C. [Production of purified Japanese encephalitis vaccine from Vero cells with roller bottles]. Zhonghua Yi Xue Za Zhi 1998; 78:261-2. [PMID: 10923479] [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: 02/17/2023]
Abstract
OBJECTIVE To study the production process of purified Japanese encephalitis (JE) vaccine from Vero cells cultivated in roller bottles to improve the quality of JE vaccine. METHODS The 15 L roller bottles were used for propagation of Vero cells and JE virus, then the virus was inactivated, concentrated, treated by protamine sulphate, purified by sucrose gradient density centrifugation and lyophylized as final product. RESULTS Three batches of high quality lyophylized vaccine were produced and the quality control tests of vaccine for human use had been passed. CONCLUSION Using roller bottles to cultivate continuous cell line-Vero cells for JE vaccine production is feasible.
Collapse
Affiliation(s)
- Z Ding
- National Vaccine & Serum Institute, Beijing
| | | | | |
Collapse
|
38
|
Zhong N, Ju W, Curley D, Wang D, Pietrofesa J, Wu G, Shen Y, Pang C, Poon P, Liu X, Gou S, Kajanoja E, Ryynänen M, Dobkin C, Brown WT. A survey of FRAXE allele sizes in three populations. Am J Med Genet 1996; 64:415-9. [PMID: 8844095 DOI: 10.1002/(sici)1096-8628(19960809)64:2<415::aid-ajmg36>3.0.co;2-g] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
FRAXE is a fragile site located at Xq27-8, which contains polymorphic triplet GCC repeats associated with a CpG island. Similar to FRAXA, expansion of the GCC repeats results in an abnormal methylation of the CpG island and is associated with a mild mental retardation syndrome (FRAXE-MR). We surveyed the GCC repeat alleles of FRAXE from 3 populations. A total of 665 X chromosomes including 416 from a New York Euro-American sample (259 normal and 157 with FRAXA mutations), 157 from a Chinese sample (144 normal and 13 FRAXA), and 92 from a Finnish sample (56 normal and 36 FRAXA) were analyzed by polymerase chain reaction. Twenty-seven alleles, ranging from 4 to 39 GCC repeats, were observed. The modal repeat number was 16 in the New York and Finnish samples and accounted for 24% of all the chromosomes tested (162/665). The modal repeat number in the Chinese sample was 18. A founder effect for FRAXA was suggested among the Finnish FRAXA samples in that 75% had the FRAXE 16 repeat allele versus only 30% of controls. Sequencing of the FRAXE region showed no imperfections within the GCC repeat region, such as those commonly seen in FRAXA. The smaller size and limited range of repeats and the lack of imperfections suggests the molecular mechanisms underlying FRAXE triplet mutations may be different from those underlying FRAXA.
Collapse
Affiliation(s)
- N Zhong
- Department of Human Genetics, New York State Institute for Basic Research for Developmental Disabilities, Staten Island 10314, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Ambler RP, Daniel M, Fleming J, Hermoso JM, Pang C, Waley SG. The amino acid sequence of the zinc-requiring beta-lactamase II from the bacterium Bacillus cereus 569. FEBS Lett 1985; 189:207-11. [PMID: 3930290 DOI: 10.1016/0014-5793(85)81024-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The amino acid sequence of the zinc-requiring beta-lactamase II from Bacillus cereus strain 569 has been determined. It consists of a single polypeptide chain of 227 residues. It is the only example so far fully characterized of a class B beta-lactamase, and is structurally and mechanistically distinct from both the widely distributed class A beta-lactamases (such as the Escherichia coli RTEM enzyme) and from the chromosomally encoded class C enzymes from Gram-negative bacteria.
Collapse
|
40
|
|