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Ling B, Chen L, Zhang J, Cao X, Ye W, Ouyang Y, Chi F, Ding Z. [Dosimetric analysis of different optimization algorithms for three-dimensional brachytherapy for gynecologic tumors]. Nan Fang Yi Ke Da Xue Xue Bao 2024; 44:773-779. [PMID: 38708512 DOI: 10.12122/j.issn.1673-4254.2024.04.20] [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: 05/07/2024]
Abstract
OBJECTIVE To investigate the dosimetric difference between manual and inverse optimization in 3-dimensional (3D) brachytherapy for gynecologic tumors. METHODS This retrospective study was conducted among a total of 110 patients with gynecologic tumors undergoing intracavitary combined with interstitial brachytherapy or interstitial brachytherapy. Based on the original images, the brachytherapy plans were optimized for each patient using Gro, IPSA1, IPSA2 (with increased volumetric dose limits on the basis of IPSA1) and HIPO algorithms. The dose-volume histogram (DVH) parameters of the clinical target volume (CTV) including V200, V150, V100, D90, D98 and CI, and the dosimetric parameters D2cc, D1cc, and D0.1cc for the bladder, rectum, and sigmoid colon were compared among the 4 plans. RESULTS Among the 4 plans, Gro optimization took the longest time, followed by HIPO, IPSA2 and IPSA1 optimization. The mean D90, D98, and V100 of HIPO plans were significantly higher than those of Gro and IPSA plans, and D90 and V100 of IPSA1, IPSA2 and HIPO plans were higher than those of Gro plans (P < 0.05), but the CI of the 4 plans were similar (P > 0.05). For the organs at risk (OARs), the HIPO plan had the lowest D2cc of the bladder and rectum; the bladder absorbed dose of Gro plans were significantly greater than those of IPSA1 and HIPO (P < 0.05). The D2cc and D1cc of the rectum in IPSA1, IPSA2 and HIPO plans were better than Gro (P < 0.05). The D2cc and D1cc of the sigmoid colon did not differ significantly among the 4 plans. CONCLUSION Among the 4 algorithms, the HIPO algorithm can better improve dose coverage of the target and lower the radiation dose of the OARs, and is thus recommended for the initial plan optimization. Clinically, the combination of manual optimization can achieve more individualized dose distribution of the plan.
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Affiliation(s)
- B Ling
- Department of Radiation Medicine, School of Public Health, Southern Medical University, Guangzhou 510515, China
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - L Chen
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - J Zhang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - X Cao
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - W Ye
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Y Ouyang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - F Chi
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Z Ding
- Department of Radiation Medicine, School of Public Health, Southern Medical University, Guangzhou 510515, China
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Geng P, Ling B, Yang Y, Walline JH, Song Y, Lu M, Wang H, Zhu Q, Tan D, Xu J. THIRD bedside ultrasound protocol for rapid diagnosis of undifferentiated shock: a prospective observational study. Hong Kong Med J 2022; 28:383-391. [PMID: 36171145 DOI: 10.12809/hkmj219648] [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: 06/16/2023] Open
Abstract
INTRODUCTION It is clinically challenging to differentiate the pathophysiological types of shock in emergency situations. Here, we evaluated the ability of a novel bedside ultrasound protocol (Tamponade/tension pneumothorax, Heart, Inferior vena cava, Respiratory system, Deep venous thrombosis/aorta dissection [THIRD]) to predict types of shock in the emergency department. METHODS An emergency physician performed the THIRD protocol on all patients with shock who were admitted to the emergency department. All patients were closely followed to determine their final clinical diagnoses. The kappa index, sensitivity, specificity, positive predictive value, and negative predictive value were calculated for the initial diagnostic impression provided by the THIRD protocol, compared with each patient's final diagnosis. RESULTS In total, 112 patients were enrolled in this study. The kappa index between initial impression and final diagnosis was 0.81 (95% confidence interval=0.73-0.89; P<0.001). For hypovolaemic, cardiogenic, distributive, and obstructive types of shock, the sensitivities of the THIRD protocol were 100%, 100%, 93%, and 100%, respectively; the sensitivity for a 'mixed' shock aetiology was 86%. The negative predictive value of the THIRD protocol for all five types of shock was ≥96%. CONCLUSION Initial diagnostic judgements determined using the THIRD protocol showed favourable agreement with the final diagnosis in patients who presented with undifferentiated shock. The THIRD protocol has great potential for use as a bedside approach that can guide the rapid management of undifferentiated shock in emergency settings, particularly for patients with obstructive, hypovolaemic, or cardiogenic shock.
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Affiliation(s)
- P Geng
- Department of Emergency Medicine, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, Yangzhou, China
| | - B Ling
- Department of Emergency Medicine, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, Yangzhou, China
| | - Y Yang
- Department of Emergency Medicine, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, Yangzhou, China
| | - J H Walline
- Accident and Emergency Medicine Academic Unit, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong
| | - Y Song
- Department of Emergency Medicine, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, Yangzhou, China
| | - M Lu
- Department of Emergency Medicine, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, Yangzhou, China
| | - H Wang
- Department of Emergency Medicine, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, Yangzhou, China
| | - Q Zhu
- Department of Emergency Medicine, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, Yangzhou, China
| | - D Tan
- Department of Emergency Medicine, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, Yangzhou, China
| | - J Xu
- Department of Emergency Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
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Chacko E, Ling B, Avny N, Barak Y, Cullum S, Sundram F, Cheung G. Mindfulness-Based Cognitive Therapy for Stress Reduction in Family Carers of People Living with Dementia: A Systematic Review. Int J Environ Res Public Health 2022; 19:614. [PMID: 35010874 PMCID: PMC8744610 DOI: 10.3390/ijerph19010614] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 01/27/2023]
Abstract
The prevalence of dementia is increasing and the care needs of people living with dementia are rising. Family carers of people living with dementia are a high-risk group for psychological and physical health comorbidities. Mindfulness-based interventions such as mindfulness-based cognitive therapy show potential for reducing stress experienced by family carers of people living with dementia. This study aims to systematically assess the efficacy of mindfulness-based cognitive therapy in reducing stress experienced by family carers of people living with dementia. Electronic databases including MEDLINE, APA PsycINFO, EMBASE, CINAHL, Scopus, Web of Science, Cochrane Library, AMED, ICTRP, and ALOIS were searched for relevant studies up to August 2020. All types of intervention studies were included. Quantitative findings were explored. Seven studies were eligible for inclusion. The analysis showed that there was a statistically significant reduction in self-rated carer stress in four studies for the mindfulness-based cognitive therapy group compared to controls. One study that was adequately powered also showed reductions in carer burden, depression, and anxiety compared to control. Mindfulness-based cognitive therapy appears to be a potentially effective intervention for family carers of people living with dementia, but large, high-quality randomized controlled trials in ethnically diverse populations are required to evaluate its effectiveness.
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Affiliation(s)
- Emme Chacko
- Faculty of Medical and Health Sciences, The University of Auckland, Auckland 1142, New Zealand; (B.L.); (S.C.); (F.S.); (G.C.)
| | - Benjamin Ling
- Faculty of Medical and Health Sciences, The University of Auckland, Auckland 1142, New Zealand; (B.L.); (S.C.); (F.S.); (G.C.)
| | - Nadav Avny
- Auckland District Health Board, Auckland 1023, New Zealand;
| | - Yoram Barak
- Department of Psychological Medicine, Dunedin School of Medicine, University of Otago, Dunedin 9016, New Zealand;
| | - Sarah Cullum
- Faculty of Medical and Health Sciences, The University of Auckland, Auckland 1142, New Zealand; (B.L.); (S.C.); (F.S.); (G.C.)
| | - Fred Sundram
- Faculty of Medical and Health Sciences, The University of Auckland, Auckland 1142, New Zealand; (B.L.); (S.C.); (F.S.); (G.C.)
| | - Gary Cheung
- Faculty of Medical and Health Sciences, The University of Auckland, Auckland 1142, New Zealand; (B.L.); (S.C.); (F.S.); (G.C.)
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Jia M, Xu Y, Shao B, Guo Z, Hu L, Pataer P, Abass K, Ling B, Gong Z. Diagnostic magnetic resonance imaging in synovial chondromatosis of the temporomandibular joint. Br J Oral Maxillofac Surg 2021; 60:140-144. [PMID: 34848098 DOI: 10.1016/j.bjoms.2021.02.024] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 02/16/2021] [Indexed: 10/21/2022]
Abstract
The aim of this paper was to investigate the clinical and magnetic resonance imaging (MRI) features of synovial chondromatosis (SC) of the temporomandibular joint (TMJ). Fourteen patients with SC of the TMJ were included in the study. Clinical and MRI features were analysed and divided into three types based on MRI classification: type I with loose bodies, type II with homogeneous masses, and type III with a mixture of loose bodies and homogeneous masses. All SCs occurred in the superior compartment of the TMJ. There were two patients (14%) categorised as type I, five (36%) as type II and seven (50%) as type III. Four patients (29%) had disc perforation, and nine had bone erosion; among those nine, seven (78%) had type III and two (22%) type II. Histological examination showed inflammation and calcification in the synovial membrane and, and cartilage of the hyaline type in all cases. MRI has advantages in the diagnosis of SC.
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Affiliation(s)
- M Jia
- Oncological Department of Oral & Maxillofacial Surgery, the First Affiliated Hospital (the Affiliated Stomatological Hospital) of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Institute of Stomatology, No. 137 Li YuShan South Road, Urumqi, Xinjiang, China
| | - Y Xu
- Oncological Department of Oral & Maxillofacial Surgery, the First Affiliated Hospital (the Affiliated Stomatological Hospital) of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Institute of Stomatology, No. 137 Li YuShan South Road, Urumqi, Xinjiang, China
| | - B Shao
- Oncological Department of Oral & Maxillofacial Surgery, the First Affiliated Hospital (the Affiliated Stomatological Hospital) of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Institute of Stomatology, No. 137 Li YuShan South Road, Urumqi, Xinjiang, China
| | - Z Guo
- Oncological Department of Oral & Maxillofacial Surgery, the First Affiliated Hospital (the Affiliated Stomatological Hospital) of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Institute of Stomatology, No. 137 Li YuShan South Road, Urumqi, Xinjiang, China
| | - L Hu
- Oncological Department of Oral & Maxillofacial Surgery, the First Affiliated Hospital (the Affiliated Stomatological Hospital) of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Institute of Stomatology, No. 137 Li YuShan South Road, Urumqi, Xinjiang, China
| | - P Pataer
- Oncological Department of Oral & Maxillofacial Surgery, the First Affiliated Hospital (the Affiliated Stomatological Hospital) of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Institute of Stomatology, No. 137 Li YuShan South Road, Urumqi, Xinjiang, China
| | - K Abass
- Oncological Department of Oral & Maxillofacial Surgery, the First Affiliated Hospital (the Affiliated Stomatological Hospital) of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Institute of Stomatology, No. 137 Li YuShan South Road, Urumqi, Xinjiang, China
| | - B Ling
- Oncological Department of Oral & Maxillofacial Surgery, the First Affiliated Hospital (the Affiliated Stomatological Hospital) of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Institute of Stomatology, No. 137 Li YuShan South Road, Urumqi, Xinjiang, China
| | - Z Gong
- Oncological Department of Oral & Maxillofacial Surgery, the First Affiliated Hospital (the Affiliated Stomatological Hospital) of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Institute of Stomatology, No. 137 Li YuShan South Road, Urumqi, Xinjiang, China.
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Chen FY, Xiao M, Ling B, Liu L, Chen L. Vitamin D does not improve lung function decline in COPD: a meta-analysis. Eur Rev Med Pharmacol Sci 2020; 23:8637-8644. [PMID: 31646598 DOI: 10.26355/eurrev_201910_19181] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Vitamin D deficiency plays an important role in chronic obstructive pulmonary disease (COPD). However, the effects of vitamin D supplementation on lung function decline in COPD were inconsistently reported and a meta-analysis is thus needed. MATERIALS AND METHODS Eligible cohort and randomized controlled trials (RCTs) were searched from databases including PubMed, Embase, and Web of Science. Pooled standardized mean difference (SMD) with 95% confidence interval (CI) was calculated in a random or fixed effects model. RESULTS Eight studies reaching the inclusion criteria and involving 687 COPD patients were included. Pooled effect size showed vitamin D treatment resulted in no significant improvements in FEV1 (SMD: 0.38, 95% CI: -0.13 to 0.88, p= 0.144), FVC (SMD: 0.55, 95% CI: -0.49 to 1.58, p=0.299), and FEV1/FVC (SMD: 0.00, 95% CI: -0.27-0.27, p=0.995) in COPD patients. Subgroup analysis revealed neither short-term (<6 months) (SMD: 0.10, 95% CI: -0.17 to 0.37, p=0.479) nor long-term (≥6 months) (SMD: 0.52, 95% CI: -0.23 to 1.27, p=0.172) vitamin D exposure could significantly benefit lung function decline in COPD. CONCLUSIONS This meta-analysis shows neither short-term nor long-term additional supplementation of vitamin D can benefit the lung function decline in COPD. Moreover, large scale RCTs focusing on COPD smokers with low level of vitamin D should be considered.
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Affiliation(s)
- F-Y Chen
- Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan, China.
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Wang W, Hao M, Chen CL, Liu P, Ling B, Kang S, Lu AW, Wang WL, Zhao WD, Zhu QY, Zhao YY, Zhao HW, Jin SL, Ni Y, Lang JH. [Trend in proportion and clinicopathological characteristics of young women with stage Ⅰa2 to Ⅱa2 cervical cancer]. Zhonghua Fu Chan Ke Za Zhi 2019; 54:666-672. [PMID: 31648442 DOI: 10.3760/cma.j.issn.0529-567x.2019.10.004] [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 analyze the 13 years trend in proportion, risks factors and clinicopathological characteristics of young women with stage Ⅰa2 to Ⅱa2 cervical cancer by using multi-center data of cervical cancer in China. Methods: The clinicopathological data of 46 313 patients with cervical cancer treated from 37 hospitals in China were obtained from January 2004 to December 2016. Using clinical and pathologic data, each patient's stage was reclassified by the 2018 International Federation of Gynecology and Obstetrics (FIGO) staging system. A total of 19 041 patients were selected according to the following criteria: FIGO stage Ⅰa2 to Ⅱa2, underwent type B or C radical hysterectomy and pelvic lymphadenectomy. All the patients were divided into two groups: the study group of 1 888 patients aged 35 years or younger and the control group of 17 153 patients aged over 35 years. The 13 years trend in proportion of young women with stage Ⅰa2 to Ⅱa2 cervical cancer, risks factors and clinicopathological characteristics of two groups were retrospectively analyzed. Results: (1) The total number of hospitalized patients with stage Ⅰa2 to Ⅱa2 cervical cancer increased annually. However, a downward trend of patients aged 35 years or younger was observed (P<0.01) . The constituent ratio of patients aged 35 years or younger was significantly greater during 2004-2010 than that during 2011-2016 [12.6% (820/6 484) and 8.5% (1 068/12 557) , respectively; χ(2)=82.101, P<0.01]. (2) Compared with patients aged over 35 years, patients aged 35 years or younger had an earlier age at menarche, a later age at marriage, lesser gravida and parity (all P<0.01). The positive rate of high-risk HPV infection was not statistically different between two groups (all P>0.05). (3) The proportions of stage Ⅰ, exophytic type and non-squamous histological type in patients aged 35 years or younger were clearly higher than those in patients aged over 35 years (83.4% vs 68.5%, P<0.01; 63.2% vs 56.2%, P<0.01; 13.9% vs 12.0%, P<0.05, respectively). Whereas the poor differentiation ratios of the two groups had no statistical significance (P>0.05). (4) As for the postoperative pathological risk factors, the rate of surgical margin involvement in patients aged 35 years or younger was lower than that aged over 35 years (1.1% vs 1.8%, P<0.05), and the rate of depth of stromal invasion >1/2 in patients aged 35 years or younger was lower than that in patients aged over 35 years (40.1% vs 50.9%, P<0.01). In addition, there were no significant difference in parametrial margin involvement, tumor size and lymph vascular space invasion between two groups (all P>0.05). Conclusions: The trend in proportion among hospitalized patients for stage Ⅰa2 to Ⅱa2 cervical cancer in young women is decreasing yearly. Compared with cervical cancer in middle-aged and elderly women, cervical cancer in young women have an earlier age at menarche, a higher proportion of stage Ⅰ patients and non-squamous histological type. In terms of the postoperative pathological risk factors, the rate of surgical margin involvement and depth of stromal invasion >1/2 in young women with cervical cancer are lower than in middle-aged and elderly women.
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Affiliation(s)
- W Wang
- Department of Obstetrics and Gynecology, the Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - M Hao
- Department of Obstetrics and Gynecology, the Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - C L Chen
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - P Liu
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - B Ling
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing 100029, China
| | - S Kang
- Department of Gynecology, Fourth Hospital, Hebei Medical University, Shijiazhuang 050019, China
| | - A W Lu
- Department of Obstetrics and Gynecology, Shenzhen Hospital, Southern Medical University, Shenzhen 518101, China
| | - W L Wang
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, China
| | - W D Zhao
- Department of Obstetrics and Gynecology, Anhui Provincial Hospital, Hefei 236048, China
| | - Q Y Zhu
- Department of Obstetrics and Gynecology, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - Y Y Zhao
- Department of Obstetrics and Gynecology, the Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - H W Zhao
- Department of Gynecology, Shanxi Provincial Cancer Hospital, Taiyuan 030001, China
| | - S L Jin
- Department of Obstetrics and Gynecology, Peace Hospital Affiliated with Changzhi Medical College, Changzhi 046000, China
| | - Y Ni
- Department of Obstetrics and Gynecology, Yuncheng Central Hospital in Shanxi Province, Yuncheng 044000, China
| | - J H Lang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
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Markossian TW, Kramer HJ, Burge NJ, Pacold IV, Leehey DJ, Huo Z, Schneider J, Ling B, Stroupe KT. Low statin use in nondialysis-dependent chronic kidney disease in the absence of clinical atherosclerotic cardiovascular disease or diabetes. Clin Kidney J 2019; 12:530-537. [PMID: 31384445 DOI: 10.1093/ckj/sfy131] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Indexed: 11/13/2022] Open
Abstract
Background Both reduced glomerular filtration rate and increased urine albumin excretion, markers of chronic kidney disease (CKD), are associated with increased risk of atherosclerotic cardiovascular disease (ASCVD). However, CKD is not recognized as an ASCVD risk equivalent by most lipid guidelines. Statin medications, especially when combined with ezetimibe, significantly reduce ASCVD risk in patients with nondialysis-dependent CKD. Unless physicians recognize the heightened ASCVD risk in this population, statins may not be prescribed in the absence of clinical cardiovascular disease or diabetes, a recognized ASCVD risk equivalent. We examined statin use in adults with nondialysis-dependent CKD and examined whether the use differed in the presence of clinical ASCVD and diabetes. Methods This study ascertained statin use from pharmacy dispensing records during fiscal years 2012 and 2013 from the US Department of Veterans Affairs Healthcare System. The study included 581 344 veterans aged ≥50 years with nondialysis-dependent CKD Stages 3-5 with no history of kidney transplantation or dialysis. The 10-year predicted ASCVD risk was calculated with the pooled risk equation. Results Of veterans with CKD, 62.1% used statins in 2012 and 55.4% used statins continuously over 2 years (2012-13). Statin use in 2012 was 76.2 and 75.5% among veterans with CKD and ASCVD or diabetes, respectively, but in the absence of ASCVD, diabetes or a diagnosis of hyperlipidemia, statin use was 21.8% (P < 0.001). The 10-year predicted ASCVD risk was ≥7.5% in 95.1% of veterans with CKD, regardless of diabetes status. Conclusions Statin use is low in veterans with nondialysis-dependent CKD in the absence of ASCVD or diabetes despite high-predicted ASCVD risk. Future studies should examine other populations.
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Affiliation(s)
- Talar W Markossian
- Center for Innovation in Complex Chronic Healthcare, Hines Veterans Administration Hospital, Hines, IL, USA.,Department of Public Health Sciences, Loyola University Chicago, Maywood, IL, USA
| | - Holly J Kramer
- Department of Public Health Sciences, Loyola University Chicago, Maywood, IL, USA.,Department of Medicine, Loyola University Chicago, Maywood, IL, USA.,Medicine Service Line, Hines Veterans Administration Hospital, Hines, IL, USA
| | - Nicholas J Burge
- Medicine Service Line, Hines Veterans Administration Hospital, Hines, IL, USA
| | - Ivan V Pacold
- Department of Medicine, Loyola University Chicago, Maywood, IL, USA.,Medicine Service Line, Hines Veterans Administration Hospital, Hines, IL, USA
| | - David J Leehey
- Department of Medicine, Loyola University Chicago, Maywood, IL, USA.,Medicine Service Line, Hines Veterans Administration Hospital, Hines, IL, USA
| | - Zhiping Huo
- Center for Innovation in Complex Chronic Healthcare, Hines Veterans Administration Hospital, Hines, IL, USA
| | - Julia Schneider
- Department of Medicine, Loyola University Chicago, Maywood, IL, USA.,Medicine Service Line, Hines Veterans Administration Hospital, Hines, IL, USA
| | - Benjamin Ling
- Department of Medicine, Loyola University Chicago, Maywood, IL, USA.,Medicine Service Line, Hines Veterans Administration Hospital, Hines, IL, USA
| | - Kevin T Stroupe
- Center for Innovation in Complex Chronic Healthcare, Hines Veterans Administration Hospital, Hines, IL, USA.,Department of Public Health Sciences, Loyola University Chicago, Maywood, IL, USA
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Markossian TW, Kramer HJ, Burge NJ, Pacold IV, Leehey DJ, Huo Z, Schneider J, Ling B, Stroupe KT. Statin use among Veterans with dialysis-dependent chronic kidney disease. Hemodial Int 2019; 23:206-213. [PMID: 30779455 DOI: 10.1111/hdi.12730] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 11/26/2018] [Indexed: 11/29/2022]
Abstract
INTRODUCTION The benefits of statin medications in patients receiving maintenance dialysis remains controversial and clinical trials overall have shown no benefit. Potential side effects of statin medications include myalgias, myopathy, and memory loss and risk of side effects associated with statin medications increase with higher statin doses. We examined statin use and statin dose among Veterans with dialysis dependent CKD. Such information may help clinicians modulate medication use and reduce pill burden in appropriate patients. METHODS This cross-sectional analysis ascertained medication utilization by linking records from the U.S. Department of Veteran's Affairs (VA) Managerial Cost Accounting Pharmacy National Data Extracts and Medicare Part D during calendar year 2013 for Veterans with dialysis-dependent CKD enrolled in and/or using VA healthcare. The venue of dialysis and patient characteristics were ascertained by linking VA Medical SAS datasets, VA Fee Basis datasets (for non-VA care paid for by VA), Medicare claims and the United States Renal Data Systems patient core files. FINDINGS We identified 18,494 Veterans with dialysis-dependent CKD who were enrolled in and/or used VA healthcare, had no history of kidney transplantation, and were alive on January 1, 2014. More than half (58.1%) of Veterans with dialysis-dependent CKD used statins and 35.7% of statin utilization was high dose. Statins were the third most commonly prescribed medication after beta blockers (64.8%) and phosphate binders (64.5%). DISCUSSION Statins are a commonly prescribed medication among Veterans receiving maintenance dialysis and approximately one-third of statin utilization is high dose in this population. Future studies should examine patient preferences, comorbidities, and dialysis characteristics that impact the risks and benefits of statin use in order to identify those patients who will or will not benefit from continued statin use.
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Affiliation(s)
- Talar W Markossian
- Center for Innovation in Complex Chronic Healthcare, Veterans Administration Hospital, Hines, Illinois, USA.,Department of Public Health Sciences, Loyola University Chicago, Maywood, Illinois, USA
| | - Holly J Kramer
- Medicine Service Line, Hines Veterans Administration Hospital, Hines, Illinois, USA.,Department of Public Health Sciences, Loyola University Chicago, Maywood, Illinois, USA.,Department of Medicine, Division of Nephrology and Hypertension, Loyola University Chicago, Maywood, Illinois, USA
| | - Nicholas J Burge
- Medicine Service Line, Hines Veterans Administration Hospital, Hines, Illinois, USA
| | - Ivan V Pacold
- Medicine Service Line, Hines Veterans Administration Hospital, Hines, Illinois, USA.,Department of Cardiology, Loyola University Chicago, Maywood, Illinois, USA
| | - David J Leehey
- Medicine Service Line, Hines Veterans Administration Hospital, Hines, Illinois, USA.,Department of Medicine, Division of Nephrology and Hypertension, Loyola University Chicago, Maywood, Illinois, USA
| | - Zhiping Huo
- Center for Innovation in Complex Chronic Healthcare, Veterans Administration Hospital, Hines, Illinois, USA
| | - Julia Schneider
- Medicine Service Line, Hines Veterans Administration Hospital, Hines, Illinois, USA.,Department of Medicine, Division of Nephrology and Hypertension, Loyola University Chicago, Maywood, Illinois, USA
| | - Benjamin Ling
- Medicine Service Line, Hines Veterans Administration Hospital, Hines, Illinois, USA.,Department of Medicine, Division of Nephrology and Hypertension, Loyola University Chicago, Maywood, Illinois, USA
| | - Kevin T Stroupe
- Center for Innovation in Complex Chronic Healthcare, Veterans Administration Hospital, Hines, Illinois, USA.,Department of Public Health Sciences, Loyola University Chicago, Maywood, Illinois, USA
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Ling B, Perez S, May A, Veazey R, Wu Y, Johnson AM, Xiang SH, Li J, Foley B, Doyle-Meyers L, Panganiban A, Kaur A. Persistence of SIV in the brain of SIV-infected Chinese rhesus macaques with or without antiretroviral therapy. J Virus Erad 2017. [DOI: 10.1016/s2055-6640(20)30595-1] [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: 10/23/2022] Open
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10
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Wu Y, Hetrick B, Iqbal S, Ling B. Partial control of viral rebound with a Rev-dependent lentiviral vector carrying HSV-tk gene in SIV-infected rhesus macaques. J Virus Erad 2017. [DOI: 10.1016/s2055-6640(20)30569-0] [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: 11/26/2022] Open
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Liang J, Chen G, Deng L, Liu FJ, Wu LJ, Li Q, Shen X, Yang YJ, Ling B. Laparoscopic extraperitoneal uterine suspension with suture line instead of mesh. BJOG 2017; 124 Suppl 3:64-70. [PMID: 28856865 DOI: 10.1111/1471-0528.14735] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2017] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To compare the safety and effectiveness of two different materials (mesh and suture line) used in laparoscopic extraperitoneal uterine suspension. DESIGN A retrospective observational study. SETTING Gynaecology departments in two hospitals in China. POPULATION Women with symptomatic pelvic organ prolapse (POP) of stage II or higher. METHODS The women were divided into two groups according to the two different materials for laparoscopic extraperitoneal uterine suspension: mesh or suture line. The baseline characteristics, perioperative details, complications, objective and subjective indexes of the two groups were compared. MAIN OUTCOME MEASURES The primary outcome was subjective satisfaction rate based upon validated questionnaires. The secondary outcome was objective anatomic assessment with the POP-Q system. RESULTS No difference was found in baseline characteristics and perioperative details except that there were more cases of cardiovascular disease (CVD) and associated other surgeries in the Line than the Mesh group (36 versus 19, P < 0.05; 12 versus 2, P < 0.05). Statistically significant improvements were found in anatomical measures of points Aa, Ba, Ap, Bp, C and TVL (P < 0.01), as well as functional and quality-of-life measures (P < 0.01 for PFDI-20 and PFIQ-7) between both groups. The postoperative PFDI-20, PFIQ-7 and PGI-I scores were not different between two groups (P > 0.05). Two cases of deep wound infection were observed in Mesh group at 3-month follow up. CONCLUSIONS Laparoscopic extraperitoneal linear uterine suspension is easy to perform and is associated with fewer mesh-related complications. It is more secure, especially in elderly women and in those with physical complications. TWEETABLE ABSTRACT Laparoscopic extraperitoneal linear uterine suspension is safe, with fewer mesh-related complications.
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Affiliation(s)
- J Liang
- Department of Obstetrics and Gynaecology, China-Japan Friendship Hospital, Beijing, China
| | - G Chen
- Department of Obstetrics and Gynaecology, Anhui Provincial Hospital, Anhui, China
| | - L Deng
- Department of Obstetrics and Gynaecology, China-Japan Friendship Hospital, Beijing, China
| | - F J Liu
- Department of Obstetrics and Gynaecology, China-Japan Friendship Hospital, Beijing, China
| | - L J Wu
- Department of Obstetrics and Gynaecology, China-Japan Friendship Hospital, Beijing, China
| | - Q Li
- Department of Obstetrics and Gynaecology, China-Japan Friendship Hospital, Beijing, China
| | - X Shen
- Department of Obstetrics and Gynaecology, China-Japan Friendship Hospital, Beijing, China
| | - Y J Yang
- Department of Obstetrics and Gynaecology, China-Japan Friendship Hospital, Beijing, China
| | - B Ling
- Department of Obstetrics and Gynaecology, China-Japan Friendship Hospital, Beijing, China
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Gruber M, van Der Meer G, Ling B, Barber C, Mills N, Neeff M, Salkeld L, Mahadevan M. The bacterial species associated with aspirated foreign bodies in children. Auris Nasus Larynx 2017; 45:598-602. [PMID: 28779997 DOI: 10.1016/j.anl.2017.07.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 04/04/2017] [Accepted: 07/11/2017] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Inhaled foreign bodies in children are common and may be complicated by secondary airway tract infection. The inhaled foreign body may act as carrier of infectious material and the aim of this study was to explore the bacterial species associated with aspirated foreign bodies in a cohort of children. METHODS Retrospective case series of 34 patients who underwent rigid laryngobronchoscopy because of foreign body aspiration. Each patient had a sample taken from tracheobronchial secretions during the procedure. RESULTS The average patient age was 31.2 months and the average hospital stay was 2.5 days. Of the foreign bodies 24 (71%) were organic in nature and 10 (29%) were non-organic. Twenty eight (82.3%) patients had mixed oropharyngeal flora organisms growth. Fifteen (44%) samples were positive for organisms other than oropharyngeal flora with the most common cultured organisms being: Streptococcus pneumonia (4/12%), Haemophilus influenza (4/12%), Moraxella catarrhalis (4/12%). Four samples (12%) grew a fungus; Candida albicans was cultured in 3 patients and Aspergillus glaucus was identified in one sample. Of the non-oropharyngeal organisms 7(47%) demonstrated antibiotic resistance with four having resistance to amoxycillin, two resistant to penicillin and one resistant to cotrimoxazole. CONCLUSION Some children who present with aspirated foreign body may be complicated with secondary airway infection. Antibacterial treatment might be considered in some of these cases. The regimen of antibiotics should aim to cover oropharyngeal flora, S. pneumonia, H. influenza and Moraxella catarrhalis.
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Affiliation(s)
- Maayan Gruber
- Paediatric Otolaryngology Unit, Starship Children's Hospital, Auckland, New Zealand; Faculty of Medicine, Bar-Ilan University, Israel.
| | - Graeme van Der Meer
- Paediatric Otolaryngology Unit, Starship Children's Hospital, Auckland, New Zealand
| | - Benjamin Ling
- Paediatric Otolaryngology Unit, Starship Children's Hospital, Auckland, New Zealand
| | - Colin Barber
- Paediatric Otolaryngology Unit, Starship Children's Hospital, Auckland, New Zealand
| | - Nikki Mills
- Paediatric Otolaryngology Unit, Starship Children's Hospital, Auckland, New Zealand
| | - Michel Neeff
- Paediatric Otolaryngology Unit, Starship Children's Hospital, Auckland, New Zealand
| | - Lesley Salkeld
- Paediatric Otolaryngology Unit, Starship Children's Hospital, Auckland, New Zealand
| | - Murali Mahadevan
- Paediatric Otolaryngology Unit, Starship Children's Hospital, Auckland, New Zealand
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Li R, Ling B, Lu P. Development of quantitative monoclonal antibody-specific immobilization of platelet antigens assay for antibodies against human platelet antigen-1a, 3a, and 5b. Platelets 2017; 29:71-75. [DOI: 10.1080/09537104.2017.1294681] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- R.S. Li
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - B. Ling
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - P. Lu
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
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Chen Q, Gong Z, Li C, Shao B, Liu H, Ling B. Expression of the interleukin-21 and phosphorylated extracellular signal regulated kinase 1/2 in Kimura disease. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.490] [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: 10/19/2022]
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15
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Gong Z, Liu H, Ling B, Abasi K, Chen Q. Nasolabial island flap for reconstruction of anterior maxilla defects class I and II. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.616] [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: 10/19/2022]
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16
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Markossian T, Burge N, Ling B, Schneider J, Pacold I, Bansal V, Leehey D, Stroupe K, Chang A, Kramer H. Controversies Regarding Lipid Management and Statin Use for Cardiovascular Risk Reduction in Patients With CKD. Am J Kidney Dis 2016; 67:965-77. [PMID: 26943983 DOI: 10.1053/j.ajkd.2015.12.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 12/07/2015] [Indexed: 11/11/2022]
Abstract
Adults with chronic kidney disease (CKD) are at heightened risk for dying of cardiovascular disease. Results from randomized clinical trials of statin drugs versus placebo demonstrate that statin drugs or statin plus ezetimibe reduce the absolute risk for coronary heart disease and mortality among adults with non-dialysis-dependent CKD. The Kidney Disease: Improving Global Outcomes 2013 clinical practice guideline for lipid management in CKD recommends that adults 50 years or older with non-dialysis-dependent CKD be treated with a statin or statin plus ezetimibe regardless of low-density lipoprotein cholesterol levels. However, at least 9 guidelines published during the last 5 years address lipid management for primary and secondary prevention of atherosclerotic cardiovascular disease, and not all guidelines address the utility of lipid-lowering therapy in adults with CKD. Because most patients with CKD receive most of their clinical care from non-nephrologists, differences in recommendations for lipid-lowering therapy for cardiovascular disease prevention may negatively affect the clinical care of adults with CKD and cause confusion for both patients and providers. This review addresses the identification and management of lipid levels in patients with CKD and discusses the existing controversies regarding testing and treatment of lipid levels in the CKD population.
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Affiliation(s)
- Talar Markossian
- Hines Veterans Administration Hospital, Hines, IL; Department of Medicine, Loyola University Chicago, Maywood, IL
| | | | - Benjamin Ling
- Hines Veterans Administration Hospital, Hines, IL; Department of Medicine, Loyola University Chicago, Maywood, IL
| | - Julia Schneider
- Hines Veterans Administration Hospital, Hines, IL; Department of Medicine, Loyola University Chicago, Maywood, IL
| | - Ivan Pacold
- Hines Veterans Administration Hospital, Hines, IL; Department of Medicine, Loyola University Chicago, Maywood, IL
| | - Vinod Bansal
- Department of Medicine, Loyola University Chicago, Maywood, IL
| | - David Leehey
- Hines Veterans Administration Hospital, Hines, IL; Department of Medicine, Loyola University Chicago, Maywood, IL
| | - Kevin Stroupe
- Hines Veterans Administration Hospital, Hines, IL; Department of Medicine, Loyola University Chicago, Maywood, IL
| | - Alex Chang
- Department of Medicine, Geisinger Medical Center, Danville, PA
| | - Holly Kramer
- Hines Veterans Administration Hospital, Hines, IL; Department of Medicine, Loyola University Chicago, Maywood, IL.
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Chen XZ, Fang Y, Shi YH, Cui JH, Li LY, Xu YC, Ling B. Deciphering the spectrum of somatic mutations in the entire mitochondrial DNA genome. Genet Mol Res 2015; 14:4331-7. [PMID: 25966205 DOI: 10.4238/2015.april.30.5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The mitochondrion is a crucial intracellular organelle responsible for regulating cellular energy metabolism, producing free radicals, initiating and executing the apoptotic pathways. Previous studies have shown that somatic mutations in mitochondrial DNA are associated with various tumors, which may be involved during carcinogenesis and tumor progression. To examine the mutation pattern in cancer, 625 reported somatic mutations in the mitochondrial DNA genome were analyzed. We found that, except for deletions and insertions, most somatic mutations were point mutations, accounting for 89.44% of somatic mutations. Transition was the predominant form of somatic mutation in the entire mitochondrial DNA genome, accounting for 87.12% of point mutations, most of which were homoplastic. Frequency statistics analysis of point mutations indicated that, except for 3 tRNA genes, the mutations were distributed on all resting genes and in the D-loop region, with the latter showing the highest frequency of somatic mutation (19.34%), followed by the tRNA leucine 2 gene and non-coding regions between base pairs 5892 and 5903, while 13 coding-region genes and 2 rRNA genes showed a relatively lower frequency of somatic point mutations. Nonsynonymous mutations and terminal amino acid changes were the primary point somatic mutations detected from 13 coding-region genes, which may cause mitochondrial dysfunction in cancer cells. We found that the somatic mutations may affect the mitochondrial DNA genome; the non-coding region should be examined to identify somatic mutations as potential diagnostic biomarkers for early detection of cancer.
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Affiliation(s)
- X Z Chen
- Department of Intensive Care Unit, The Second People's Hospital of Yunnan Province, Kunming, Yunnan Province, China
| | - Y Fang
- Department of Anesthesiology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, China
| | - Y H Shi
- Department of Clinical Laboratory, Shanxi Tumor Hospital, Taiyuan, Shanxi, China
| | - J H Cui
- Department of Anatomy, Medical Training Center of Shenyang Command, PLA, Dalian, Liaoning, China
| | - L Y Li
- Department of Cardiology and Clinical Laboratory, 211 Hospital of PLA, Harbin, Heilongjiang, China
| | - Y C Xu
- Department of Cardiology and Clinical Laboratory, 211 Hospital of PLA, Harbin, Heilongjiang, China
| | - B Ling
- Department of Intensive Care Unit, The Second People's Hospital of Yunnan Province, Kunming, Yunnan Province, China
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Li RS, Qiao ZL, Ling B, Lu P. Establishment of reference panel for human platelet antigen genotyping. Vox Sang 2014; 107:166-70. [PMID: 24697294 DOI: 10.1111/vox.12149] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 02/28/2014] [Accepted: 03/04/2014] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVES Human platelet antigens (HPAs) are platelet-specific alloantigens associated with polymorphisms of platelet surface glycoproteins (GPs), and they can induce alloantibodies when individuals lacking a particular polymorphism are exposed to them via pregnancy or transfusion. Immune responses to HPAs are involved in the pathogenesis of several clinical syndromes. HPA genotyping is therefore important for clinical diagnosis and laboratory research. This study aims to establish a reference panel for HPA genotyping. MATERIALS AND METHODS Genomic DNA extracted from human blood was used as the template for amplifying HPA (1a-5a and 15a) gene fragments using specific primers. The amplified products were cloned into pGM-T vectors, which were transformed into competent TOP10 cells. After clone screening and amplification, the plasmids were extracted and sequenced. Next, the gene fragments HPA-1b-5b and 15b were obtained by site-directed mutagenesis using the corresponding HPA-1a-5a and 15a plasmids as template DNA. RESULTS We successfully constructed reference plasmids for HPA genotyping with HPA-1a-5a, 15a, HPA-1b-5b and 15b. The DNA sequences were consistent with those published in GenBank. CONCLUSION Obtaining reference DNA for low-frequency HPAs is very difficult, and the successful construction of reference plasmids for the six HPA systems may solve this problem. Establishment of this panel has laid the foundation for future research on HPA genotyping.
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Affiliation(s)
- R S Li
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
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20
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Chang QH, Guo GL, Wang T, Ji LC, Huang L, Ling B, Yang HF. Few-layer graphene direct deposition on Ni and Cu foil by cold-wall chemical vapor deposition. J Nanosci Nanotechnol 2012; 12:6516-6520. [PMID: 22962776 DOI: 10.1166/jnn.2012.5432] [Citation(s) in RCA: 3] [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: 06/01/2023]
Abstract
We report an alternative synthesis process, cold-wall thermal chemical vapor deposition (CVD), is replied to directly deposit single-layer and few-layer graphene films on Ar plasma treated Ni and Cu foils using CH4 as carbon source. Through optimizing the process parameters, large scale single-layer graphene grown on Ni foil is comparable to that grown on Cu foil. The graphene films were able to be transferred to other substrates such as SiO2/Si, flexible transparent PET and verified by optical microscopy, Raman microscopy and scanning electron microscopy. The sheet resistance and transmission of the transferred graphene films on PET substrate were also discussed.
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Affiliation(s)
- Q H Chang
- Key Laboratory of Optoelectronic Materials and Device, Department of Physics, Shanghai Normal University, Shanghai 200234, China
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21
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Feng D, Cao Z, Li C, Zhang L, Zhou Y, Ma J, Liu R, Zhou H, Zhao W, Wei H, Ling B. Combination of valproic acid and ATRA restores RARβ2 expression and induces differentiation in cervical cancer through the PI3K/Akt pathway. Curr Mol Med 2012; 12:342-54. [PMID: 22229477 DOI: 10.2174/156652412799218949] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Revised: 12/22/2011] [Accepted: 01/01/2011] [Indexed: 11/22/2022]
Abstract
Epigenetic silencing of the tumor suppressor gene, RARβ2, through histone deacetylation has been established as an important process of cervical carcinogenesis. This pivotal role has led to the suggestion that a combination of retinoids selective for RARβ2 with histone deacetylase (HDAC) inhibitors may have therapeutic potential. Valproic acid (VPA), a HDAC inhibitor, has a critical role in the regulation of gene expression through histone acetylation and causes transformed cells to undergo growth arrest, differentiation, and apoptosis. Therefore, we hypothesized that the combination of VPA and ATRA could restore RARβ2 expression, thus resulting in enhanced anti-neoplastic activity in cervical cancer. Here, we show that VPA combined with ATRA led to hyperacetylation of histone H3 and a significant alteration of gene expression in cervical cancer cells, including RARβ2 gene expression, which was upregulated 50- to 90-fold. The combination therapy effectively inhibited the growth of cervical cancer cells more than the single agent treatment both in vitro and in vivo. The additive effects were associated with a significant upregulation of p21(CIP1) and p53 as well as a pronounced decrease in p-Stat3. Furthermore, the combined treatment led to cell cycle arrest predominantly at the G1 phase, and it preferentially induced cell differentiation rather than apoptosis in cervical cancer cells. The differentiation program was determined by the presence of E-cadherinmediated adhesion and activation of the PI3K/Akt pathway. Taken together, these results provide new insight into the mechanisms of enhanced antitumor activity of the HDAC inhibitor and ATRA regimen, thus offering a new therapeutic strategy for cervical cancer patients.
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Affiliation(s)
- D Feng
- Anhui Province Key Laboratory of Molecular Medicine, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, China
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Wang G, Long G, Ling B, Wei C, Chen H, Wu L, Yin T, Tang C. 742 INHIBITORY EFFECTS OF SAPPAN LIGNUM EXTRACT ON VASCULAR RESTENOSIS IN THE RAT CAROTID ARTERY BALLOON INJURY MODEL. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70743-7] [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: 11/16/2022]
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23
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Chen L, Chen H, Zhang X, Ling B, Dai Y, Ma G, Zheng J. P46 Adverse events of nimotuzumab combination therapy in patients with advanced carcinoma. EJC Suppl 2011. [DOI: 10.1016/j.ejcsup.2011.02.047] [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: 10/18/2022] Open
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Ling B, Sun XW, Zhao JL, Shen YQ, Dong ZL, Sun LD, Li SF, Zhang S. One-dimensional single-crystalline bismuth oxide micro/nanoribbons: morphology-controlled synthesis and luminescent properties. J Nanosci Nanotechnol 2010; 10:8322-8327. [PMID: 21121334 DOI: 10.1166/jnn.2010.3051] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Based on a facile vapor-phase transport method without any catalyst and template, one-dimensional single-crystalline bismuth oxide (Bi2O3) micro/nanoribbons were fabricated on silicon substrates in large quantities and morphology-controlled fabrication of Bi2O3 was achieved from a single precursor. The widths of Bi2O3 ribbons varied from 0.2 to 20 microm depending on the deposition temperatures. The thickness was in the range of 0.1-2 microm and the length reached several hundred micrometers and even millimeter range. The detailed composition and structural analysis confirmed the single-crystalline nature of alpha-Bi2O3 micro/nanoribbons with monoclinic structure. The photoluminescence spectrum of a single Bi2O3 ribbon showed a broadband emission from 450 to 750 nm in the visible region, consisting two peaks located at 589 and 697 nm which were primarily originated from the impurity ions and crystal defects. A self-catalyzed vapor-solid model was proposed to account for the growth mechanism of Bi2O3 ribbons with different morphologies.
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Affiliation(s)
- B Ling
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798
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Gong ZC, Lin ZQ, Moming A, Ling B, Liu H, Hu M, Long X. Extra-articular diffuse tenosynovial giant cell tumour of the infratemporal fossa: report of a case and literature review. Int J Oral Maxillofac Surg 2010; 39:820-4. [PMID: 20409688 DOI: 10.1016/j.ijom.2010.02.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2009] [Revised: 07/24/2009] [Accepted: 02/12/2010] [Indexed: 12/01/2022]
Abstract
The authors describe a 34-year-old man who presented with an unapparent swelling on the right preauricular zygomatic region, with progressive limitation of mouth opening and slight temporomandibular joint pain. Based on fine-needle aspiration cytology and radiological investigations, the patient was diagnosed preoperatively as having a possible tenosynovial giant cell tumour (TGCT). Surgical treatment was effective and no local recurrence was observed. Histological and immunohistochemical examination diagnosed an extra-articular diffuse TGCT. The clinical features, histopathological characteristics, imaging modalities, diagnostic methods and treatment of TGCT are discussed and a review of the relevant literature is presented.
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Affiliation(s)
- Z-C Gong
- Key Laboratory for Oral Biomedical Engineering of the Ministry of Education, School and Hospital of Stomatology, Wuhan University, Hubei, People's Republic of China
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Wei L, Jiang J, Tu Z, Wu R, Li Y, Ling B, Li L, Wang H. O995 Genomic amplification of the human telomerase gene in the screening of cervical lesions. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61368-0] [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: 10/20/2022]
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Ballon A, Ling B, Lelke A, Sader R, Landes CA. Complex facial trauma with combined surgical and orthodontic rehabilitation. J Maxillofac Oral Surg 2009; 8:173-7. [DOI: 10.1007/s12663-009-0042-7] [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] [Received: 03/06/2009] [Accepted: 06/08/2009] [Indexed: 10/20/2022] Open
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Feng D, Zhou Y, Ling B, Gao T, Shi Y, Wei H, Tian Z. Effects of the conditioned medium of mesenchymal stem cells on mouse oocyte activation and development. Braz J Med Biol Res 2009; 42:506-14. [DOI: 10.1590/s0100-879x2009000600006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2008] [Accepted: 03/11/2009] [Indexed: 11/22/2022] Open
Affiliation(s)
| | | | - B. Ling
- Anhui Medical University; Anhui Medical University, China
| | - T. Gao
- Anhui Medical University, China
| | | | - H.M. Wei
- University of Science and Technology of China, China
| | - Z.G. Tian
- University of Science and Technology of China, China
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Ling B, Feng DQ, Zhou Y, Gao T, Wei HM, Tian ZG. Effect of conditioned medium of mesenchymal stem cells on the in vitro maturation and subsequent development of mouse oocyte. ACTA ACUST UNITED AC 2008; 41:978-85. [PMID: 19039379 DOI: 10.1590/s0100-879x2008005000053] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2007] [Accepted: 10/17/2008] [Indexed: 11/22/2022]
Abstract
Mesenchymal stem cells (MSCs) secrete a variety of cytokines and growth factors in addition to self-renewal and multiple forms of differentiation. Some of these secreted bioactive factors could improve meiotic maturation in vitro and subsequent embryo developmental potential. The aim of the present study was to determine whether in vitro maturation (IVM) of mouse oocyte with or without cumulus cells could be improved by contact with conditioned medium (CM) of MSCs as well as the efficiency of CM to support follicular growth and oocyte maturation in the ovarian organ of mice cultured on soft agar. The developmental potential of matured oocyte was assessed by blastocyst formation after in vitro fertilization (IVF). Germinal vesicle stage oocytes with or without cumulus cells were subjected to IVM in either CM, Dulbecco's modified Eagle's medium (DMEM), alpha-minimum essential medium (alpha-MEM) or human tubal fluid (HTF). Approximately 120 oocytes were studied for each medium. CM produced a higher maturation rate (91.2%) than DMEM (54.7%), alpha-MEM (63.5%) and HTF (27.1%). Moreover, CM improved embryo development to blastocyst stage significantly more than DMEM and HTF (85 vs 7% and 41.7%, respectively) but there was no significant difference compared with alpha-MEM (85 vs 80.3%). The behavior of cortical granules of IVM oocytes cultured in CM revealed cytoplasmic maturation. Moreover, CM also supported preantral follicles growth well in organotypic culture on soft agar resulting in the maturation of 60% of them to developmentally competent oocytes. The production of estrogen progressively increased approximately 1-fold every other day during organ culture, while a dramatic 10-fold increase in progesterone was observed 17 h after human chorionic gonadotropin stimulus at the end of culture. Thus, CM is an effective medium for preantral follicle growth, oocyte maturation, and sequential embryo development.
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Affiliation(s)
- B Ling
- Department of Obstetrics and Gynecology, Anhui Provincial Hospital Affiliated, Anhui Medical University, Hefei 230001, China.
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Olkowski AA, Wojnarowicz C, Nain S, Ling B, Alcorn JM, Laarveld B. A study on pathogenesis of sudden death syndrome in broiler chickens. Res Vet Sci 2008; 85:131-40. [PMID: 17904171 DOI: 10.1016/j.rvsc.2007.08.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2007] [Revised: 08/01/2007] [Accepted: 08/15/2007] [Indexed: 12/01/2022]
Abstract
Sudden death syndrome (SDS) in fast growing broiler chickens has been recognized as a patho-physiological entity for four decades, but its pathogenesis still remains unknown. More recent investigations provided evidence that link SDS to cardiac arrhythmia, but the mechanism triggering arrhythmogenesis and factors responsible for fatal outcome are poorly understood. In order to understand the chain of events leading to SDS in broilers, the present study focused on putative mechanisms that trigger arrhythmia and mechanisms that predispose the myocardium to fatal arrhythmia. Susceptibility of broilers to cardiac arrhythmia under stress conditions was evaluated using a simulated stress test with epinephrine. Detailed histopathological evaluation of the broiler heart was undertaken to identify structural features that may predispose the myocardium to fatal arrhythmia. The simulated stress challenge revealed that many broilers are highly susceptible to stress induced cardiac arrhythmia. In some broilers the stress challenge induced severe ventricular arrhythmia, and the life threatening nature of this arrhythmia was evidenced by the fact that several birds showing the most severe arrhythmic responses, died suddenly within several days after the stress challenge. Examination of hearts of broilers that died of SDS revealed microscopic lesions in the cardiomyocytes, and widespread changes in the sub-endocardial and mural His-Purkinje system (HPS). Immune staining for Caspase-3 confirmed that numerous Purkinje cells in the left ventricular myocardium from broiler chickens that died of SDS were undergoing apoptosis. The observed lesions suggest that the electrical stability of the myocardium was compromised. Taken together, our findings indicate that stress is a most likely trigger of cardiac arrhythmia in broilers, whereas the pathological changes seen in the myocardium and in the HPS in fast growing broilers provide a very conducive milieu for sustained ventricular arrhythmia. In cases where the electrical stability of the myocardium is compromised, even an episodic arrhythmic event may readily degenerate to catastrophic ventricular fibrillation and sudden death. We conclude that the combination of stress and changes in the cardiomyocytes and HPS are the key requisite features in the pathogenesis of SDS.
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Affiliation(s)
- A A Olkowski
- Department of Animal and Poultry Science, University of Saskatchewan, 6D34 Agriculture Building, 51 Campus Drive, Saskatoon, SK, Canada.
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Nain S, Ling B, Bandy B, Alcorn J, Wojnarowicz C, Laarveld B, Olkowski AA. The role of oxidative stress in the development of congestive heart failure in a chicken genotype selected for rapid growth. Avian Pathol 2008; 37:367-73. [DOI: 10.1080/03079450802179850] [Citation(s) in RCA: 15] [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] [Indexed: 01/29/2023]
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Ratner N, Miller SJ, Ling B, Huang YN, Bennett MR, Mckinnon R, Rizvi TA. CNS glial progenitors and schwann cells in neurofibromatosis Type 1. J Neurochem 2008. [DOI: 10.1046/j.1471-4159.81.s1.48_2.x] [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: 11/20/2022]
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Nain S, Ling B, Alcorn J, Wojnarowicz CM, Laarveld B, Olkowski AA. Biochemical factors limiting myocardial energy in a chicken genotype selected for rapid growth. Comp Biochem Physiol A Mol Integr Physiol 2007; 149:36-43. [PMID: 17988909 DOI: 10.1016/j.cbpa.2007.10.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2007] [Revised: 09/24/2007] [Accepted: 10/01/2007] [Indexed: 11/28/2022]
Abstract
Broiler chickens (Gallus gallus) genetically selected for rapid growth are inherently predisposed to heart failure. In order to understand the biochemical mechanisms associated with the deterioration of heart function and development of congestive heart failure (CHF) in fast-growing chickens, this study examined several factors critical for myocardial energy metabolism. Measured variables included cardiac energy substrates [creatine phosphate (CrP), adenosine triphosphate (ATP), l-carnitine], activity of selected cytosolic enzymes [creatine kinase (CK; EC 2.7.3.2), lactate dehydrogenase (LDH; EC 1.1.1.27)] and mitochondrial enzymes [pyruvate dehydrogenase (PDH; EC 1.2.4.1), alpha-ketoglutarate dehydrogenase (alpha-KGDH; EC 1.2.4.2)]. The CK activities were higher in fast-growing and CHF broilers as compared to slow-growing broilers (p<0.05). Cardiac LDH and alpha-KGDH activities were not changed (p>0.05), whereas PDH activity was highest (p<0.05) in broilers with CHF. Deterioration of heart function is correlated with lowered cardiac ATP, CrP, and l-carnitine levels (all p<0.05). Depletion of high energy phosphate substrates, ATP and CrP, is evident in fast-growing chickens and those that developed CHF. Increased activity of CK suggests that cardiac energy management in fast-growing broilers and those with CHF largely depends on contribution of this pathway to regeneration of ATP from CrP. In this scenario, inadequate level of CrP is a direct cause of ATP insufficiency, whereas low cardiac l-carnitine, because of its role in fatty acid transport, is most likely an important factor contributing to shortage of key substrate required for synthesis of cardiac ATP. The insufficiencies in cardiac energy substrate synthesis provide metabolic basis of myocardial dysfunction in chickens predisposed to heart failure.
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Affiliation(s)
- S Nain
- Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, Canada
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Ling B, Walczyk M, Agarwal A, Carroll W, Liu W, Brenner R. Darbepoetin alfa administered once monthly maintains hemoglobin concentrations in patients with chronic kidney disease. Clin Nephrol 2005; 63:327-34. [PMID: 15909591 DOI: 10.5414/cnp63327] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.8] [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: 11/18/2022] Open
Abstract
BACKGROUND Darbepoetin alfa is an erythropoiesis-stimulating glycoprotein that functions by the same mechanism as recombinant human erythropoietin (rHuEPO), but has a three-fold longer serum half-life. Reduction in the frequency of darbepoetin alfa administration would be beneficial to patients with renal disease and their healthcare providers. This study evaluated the effect of extending the darbepoetin alfa dosing interval to once monthly in patients with chronic kidney disease (CKD) not receiving dialysis. METHODS This study was a multicenter, open-label study of 97 patients with CKD not on dialysis. Patients receiving stable subcutaneous doses of darbepoetin alfa once every two weeks were converted to darbepoetin alfa once monthly for 29 weeks. The proportion of patients who successfully maintained hemoglobin concentrations between 10.0 and 12.0 g/dl and the mean darbepoetin alfa dose were evaluated. Safety measurements (e.g. adverse events, laboratory parameters, blood pressure) and seroreactivity were assessed. RESULTS Hemoglobin concentration was maintained within the target range in 79% (95% confidence interval (CI) = 71% to 87%) of all patients receiving darbepoetin alfa and in 85% (95% Cl = 78% - 93%) of patients who completed the study period. The mean +/- standard deviation monthly darbepoetin alfa dose was similar between baseline (88.7 +/- 49.9 microg) and the evaluation period (86.6 +/- 78.8 microg). The safety profile for monthly darbepoetin alfa administration was comparable with that previously observed with more-frequent administration. CONCLUSION Patients with CKD who are clinically stable on darbepoetin alfa administered once every two weeks can be safely and effectively converted to darbepoetin alfa administered once monthly.
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Affiliation(s)
- B Ling
- Mountain Kidney Associates, 10 McDowell Street, 8801, Asheville, NC 28801, USA.
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Ling B, Veazey RS, Penedo C, Xu K, Lifson JD, Marx PA. Longitudinal follow up of SIVmac pathogenesis in rhesus macaques of Chinese origin: emergence of B cell lymphoma. J Med Primatol 2002; 31:154-63. [PMID: 12390537 DOI: 10.1034/j.1600-0684.2002.02001.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [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: 11/23/2022]
Abstract
Two subspecies of rhesus (Rh) macaques, the Chinese (Ch) and Indian (Ind) subspecies were infected intravenously with 100TCID50 SIVmac239. CD4+, CD8+ T cells, plasma viral loads, depletion of intestinal lymphocytes with memory phenotype, humoral immune responses and clinical courses were monitored for 600 days. The pathogenesis of SIVmac was also compared with primary human immunodeficiency virus (HIV) infection of humans. Plasma viral loads in Ch Rh were lower in the acute and chronic phases compared with Ind Rh. SIVmac pathogenesis in Ch Rh was closer to virus loads in untreated HIV infected humans. Ch Rh had higher CD4/CD8 ratios, stronger antibody responses and interestingly, less depletion of intestinal memory CCR5+ CD4+ T lymphocytes compared with Ind Rh. One Ch Rh developed B cell origin lymphoma at 570 days post-infection, the first such report in this subspecies. Three of four Ind Rh developed AIDS within 6 months. The findings indicate that Ch Rh are more resistant to SIVmac pathogenesis compared with Ind Rh and that Ch Rh paralleled HIV-1 infections in untreated adult humans. The SIVmac infected Ch Rh subspecies are an acceptable model for HIV/AIDS.
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Affiliation(s)
- B Ling
- Aaron Diamond AIDS Research Center, The Rockefeller University, New York, NY, USA
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Ling B, Li S, Zhu O, Zhang B. [A pilot study on arsenic removal facilities for central supply of drinking water]. Wei Sheng Yan Jiu 2001; 30:323-5. [PMID: 12561608] [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: 02/28/2023]
Abstract
In order to promote the application and industrialization of an arsenic removal agent developed in this project, and to improve the technology, it is necessary to have a median sized facility to test the effects, capacity and regeneration of the agent. A facility with the capacity of 1 m3/h for arsenic removal was installed in a bottled water plant, which has been operated since April 1999. The results showed that the arsenic content of effluent water has met the requirement of the national standard for drinking water. The effect of arsenic removal was by 2 mg/g. The annual cost per person was only 1.46 Yuan RMB. The operation and maintenance of the facility was simple and no need to adjust the pH of influents and effluents. The chemical regenerative agent was safe, low cost and effective. Therefore, the facility can be used in rural areas and the water plants while the arsenic in source water was higher than 0.05 mg/L.
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Affiliation(s)
- B Ling
- Institute of Environmental Health & Engineering, Chinese Academy of Preventive Medicine, Beijing 100050, China
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Ling B, Li S, Zhu Y, Zhang B. [Study on an enhancing agent for removing arsenic from drinking water]. Wei Sheng Yan Jiu 2001; 30:155-7. [PMID: 12525087] [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: 02/28/2023]
Abstract
Drinking water contaminated by arsenic for an extended period of time could be detrimental to the health of people. Some preliminary symptoms could be alleviated by drinking water non-contaminated. It is important to develop an arsenic removal agent with a specific property of most efficient, cost-effective and easy for operation. The results showed that the capacity of the agent developed in this study was 10 times higher for arsenic removal than other agent available. The lowest arsenic content of the treated water was 0.05 mg/L. The special function of this agent was arsenic removing without changing other components and the concentrations of other elements in the treated water. The operation and management was simple without adjusting pH of the influent and effluent water. The agent was 5 times cheaper in cost than alumina or activated carbon, because it was a reusable oxidation-catalyst. Therefore, the agent could be widely applied in drinking water plants or used as a purifier at home in the high arsenic areas.
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Affiliation(s)
- B Ling
- Institute of Environmental Hygiene and Engineering, Chinese Academy of Preventive Medicine, Beijing 100050, China
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Kai X, Zhang Q, Ling B, Chen Y. [Determination of lead in whole blood by graphite furnace atomic absorption spectrometry with matrix modifier and L'vov platform]. Guang Pu Xue Yu Guang Pu Fen Xi 2001; 21:244-246. [PMID: 12947636] [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: 05/24/2023]
Abstract
Lead in whole blood has been determined by graphite furnace atomic absorption spectrometry with matrix modifier and L'vov platform. It's found that addition of the mixture solution of 0.6% NH4H2PO4 and 0.4% NH4NO3 as matrix modifier, the ash temperature will increase up to 900 degrees C. 750 degrees C is practically used for ash temperature. D2 lamp is used for background correction. Lead in whole blood was directly determined after addition of 0.3% Triton X-100 without digestion. The analytical results of six whole samples is satisfactory. The recoveries are 93%-106%. The relative standard deviations are 3%-7%. The sensitivity of characteristic mass is 6.0 pg/1%.
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Affiliation(s)
- X Kai
- Department of Chemistry, Anqing Normal College, 246011 Anqing
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Ling B, Han GG, Shi N, Shang Q. [Disinfection for cistern water]. Wei Sheng Yan Jiu 2001; 30:74-6. [PMID: 11321954] [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: 02/19/2023]
Abstract
Rainwater is often collected into cisterns (pits or tanks) for household using as drinking water source in the rural areas of the northwest and the southeast coast in China, where no enough fresh water resource is available. However, the total number of bacteria and coliforms in the cisterns water was higher than the standard of that in drinking water. In order to ensure the safety for drinking, the effectiveness, conditions of treatment and cost for such disinfection methods compared with solar radiation, ultraviolet (UV), chloridation, micro-filteration and KDF were studied in 10 households in Cixi of Zhejiang Province and Weiyuan of Gansu Provinces, respectively. The micro-filteration is more compatible for bacteria removal in the tanks, while chloridation more for disinfection in the underground pits.
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Affiliation(s)
- B Ling
- Institute of Environmental Health and Engineering, Chinese Academy of Preventive Medicine, Beijing 100050, China
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40
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Ling B, Zhuang H, Wang L, Zhao H, Zhang S. [Analysis of hepatitis G virus genotypes in some areas of China]. Zhonghua Yu Fang Yi Xue Za Zhi 2000; 34:354-7. [PMID: 11860949] [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 study the genotype distribution of hepatitis G virus (HGV) isolated from different population in some areas of China. METHODS A total of 12 strains of HGV were isolated from different areas of China (three from Guangxi Zhuang Autonomous Region, three from Hebei Province, one from Heilongjiang, Jiangxi, Guangdong, Jiangsu, Anhui, Jilin Provinces and Xinjiang Autonomous Region each). The HGV 5' untranslated region (UTR) of the 12 isolates was sequenced and compared with other 26 isolates previously reported (17 from China and nine from other countries). RESULTS The nucleotide sequences of five HGV clones isolated from the same patient with HGV infection were identical, with the homology of 99.1% - 100%, indicating that variation of HGV in the same human body was very limited. Genotyping could be based on the sequence of one positive clone isolated from a patient with HGV infection. The homology of the nucleotide sequences in the 12 isolates was 96.8% - 99.4%, suggesting that they belonged to the same genotype. The homology of the 12 isolates was 88.0% - 89.7%, 87.2% - 90.3% and 94.7% - 96.3%, respectively, as compared with HGV genotypes 1 (U36380), 2 (U44402) and 3 (D90601), which indicated that all the 12 HGV isolates belonged to genotype 3. Phylogenetic distance analysis of the 38 isolates suggested that HGV strains isolated from China could be further divided into different subgroups. CONCLUSION The majority of Chinese HGV isolates belonged to genotype 3 and they could be further divided into different subgroups.
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Affiliation(s)
- B Ling
- School of Basic Medical Sciences, Peking University, Beijing 100083, China
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41
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Ling B. Health impairments arising from drinking water polluted with domestic sewage and excreta in China. Schriftenr Ver Wasser Boden Lufthyg 2000; 105:43-6. [PMID: 10842792] [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: 02/16/2023]
Abstract
Raw water of poor quality still causes many drinking-water associated health problems all over China, largely because of poor sanitation, inadequate disposal of sewage and excreta. Eutrophication due to excess of total nitrogen and phosphorous in some sources for drinking-water has led to massive proliferation of cyanobacteria. The dominant species of cyanophyta can produce microcystins, a potent liver cancer promotor. As in previous studies, high incidence of liver cancer coincided with high microcystin concentration in the source water, especially in pond water. A frequent consequence of heavy pollution of source water is further the high incidence of infectious intestinal diseases, which are more than 10-100 times as frequent in China than in developed countries.
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Affiliation(s)
- B Ling
- Institute of Environmental Health & Engineering, Chinese Academy of Preventive Medicine, Beijing, China
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Zhang C, Ling B, Liu J, Wang G. [Toxic effect of fluoride-arsenic on the reproduction and development of rats]. Wei Sheng Yan Jiu 2000; 29:138-40. [PMID: 12725053] [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: 03/02/2023]
Abstract
To determine the effects of the fluoride-arsenic exposure on the reproductive function and the development of offspring. Two generations-one nest reproduction was studied in Wistar rats to assess the changes of reproductive function and structure of ovary and development of their offspring after rats were exposed to different doses of fluoride(NaF)-arsenic(As2O3) orally. The rates of the pregnancy, normal parturition, survival and feeding survival in high dose group were lower than that in low dose groups and control. The rates of pregnancy were 73.08% and 61.54% in high dose groups, and 92.31% and 84.62% in the control. But the contents of fluoride and arsenic in rats' offspring were increased. The weights of rats' offspring in high dose group were lighter than that in control. The average weights were 38.45 g in high dose group and 60.84 g in control one month after birth. Pathological changes could be found in each stage of oocytes with transmission electron microscope(TEM). Conclusion Fluoride-arsenic exposure has adverse effects on the reproductive system and the development of rats' offspring.
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Affiliation(s)
- C Zhang
- College of Public Health, Xinjiang Medical University, Urumqi 830054, China
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DeClue JE, Heffelfinger S, Benvenuto G, Ling B, Li S, Rui W, Vass WC, Viskochil D, Ratner N. Epidermal growth factor receptor expression in neurofibromatosis type 1-related tumors and NF1 animal models. J Clin Invest 2000; 105:1233-41. [PMID: 10791998 PMCID: PMC315438 DOI: 10.1172/jci7610] [Citation(s) in RCA: 140] [Impact Index Per Article: 5.8] [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: 12/16/2022] Open
Abstract
We have found that EGF-R expression is associated with the development of the Schwann cell-derived tumors characteristic of neurofibromatosis type 1 (NF1) and in animal models of this disease. This is surprising, because Schwann cells normally lack EGF-R and respond to ligands other than EGF. Nevertheless, immunoblotting, Northern analysis, and immunohistochemistry revealed that each of 3 malignant peripheral nerve sheath tumor (MPNST) cell lines from NF1 patients expressed the EGF-R, as did 7 of 7 other primary MPNSTs, a non-NF1 MPNST cell line, and the S100(+) cells from each of 9 benign neurofibromas. Furthermore, transformed derivatives of Schwann cells from NF1(-/-) mouse embryos also expressed the EGF-R. All of the cells or cell lines expressing EGF-R responded to EGF by activation of downstream signaling pathways. Thus, EGF-R expression may play an important role in NF1 tumorigenesis and Schwann cell transformation. Consistent with this hypothesis, growth of NF1 MPNST lines and the transformed NF1(-/-) mouse embryo Schwann cells was greatly stimulated by EGF in vitro and could be blocked by agents that antagonize EGF-R function.
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Affiliation(s)
- J E DeClue
- Laboratory of Cellular Oncology, National Cancer Institute, Bethesda, Maryland 20892, USA.
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Zhang C, Liu J, Ling B, Song X, Gu W, Wang G. [The effect of fluoride-arsenic exposure on the lipid peroxidation and antioxidation of the offspring of rats]. Zhonghua Yu Fang Yi Xue Za Zhi 2000; 34:134-5. [PMID: 11860917] [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 provide information on the effects of the offspring of rats exposed to fluoride-arsenic. METHODS The levels of lipid peroxidation and the abilities of antioxidation were determined in the blood of the rats and their offsprings under two generations-one nest reproductive test. RESULTS The activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in the blood decreased with the increase of exposure dose. For example, the activity of SOD, was 14.56, 13.74, 11.89 and 11.21 micromol x min(-1) x mg Hb(-1) in different dose groups of F(2), respectively. In contrast, the concentration of lipid peroxides (LPO) increased. Eight weeks after exposure, the activities of SOD and GSH-Px increased, the activity of SOD was 13.97, 13.55, 13.47 and 12.76 micromol x min(-1) x mg Hb(-1), respectively, and the concentration of LPO returned to normal level. CONCLUSION Fluoride-arsenic exposure can cause oxidative damage of the rat's offspring.
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Affiliation(s)
- C Zhang
- School of Public Health, Xinjiang Medical University, Urumqi 830054, China
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Zhang C, Ling B, Liu J, Wang G. [Effect of fluoride-arsenic exposure on the neurobehavioral development of rats offspring]. Wei Sheng Yan Jiu 1999; 28:337-8. [PMID: 12016983] [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: 02/25/2023]
Abstract
In order to explain the effects of fluoride-arsenic exposure on the neurobehavioral development of rats, a two generations-one nest reproductive test was used. Wistar rats were exposed to fluoride and arsenic for two generations. The results demonstrated that: with the increasing concentrations of fluoride and arsenic, the positive rates of early physiological development and nerve reflex were decreased obviously, and the abilities of learning and memory of the offspring were decreased, the swimming and enduring anoxia time gradually shortened. The pathological changes of brain under electron microscope were as follows: decreased number of nerve cells, irregular cell nucleus, organellae degeneration, and obvious decreased number of synapses. It was demonstrated that fluoride-arsenic displayed distinct damage on the nerve system of the offspring.
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Affiliation(s)
- C Zhang
- College of Public Health, Xinjiang Medical University, Urumqi 830054, China
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Rosenbaum T, Kim HA, Boissy YL, Ling B, Ratner N. Neurofibromin, the neurofibromatosis type 1 Ras-GAP, is required for appropriate P0 expression and myelination. Ann N Y Acad Sci 1999; 883:203-14. [PMID: 10586246] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
The neurofibromatosis type 1 (NF1) gene product, neurofibromin, regulates activation of the Ras intracellular signaling pathway in Schwann cells. Schwann cells purified from mouse embryos with null mutations in the Nf1 gene increase expression of the major myelin glycoprotein P0. v-Ras expression in cultured Schwann cells partially mimics loss of Nf1, suggesting a role for Ras in upregulation of P0 expression in Nf1-deficient cells. We tested whether loss of Nf1 alters the ability of Schwann cells to form myelin. No significant changes in myelin formation resulted when Nf1-deficient or v-Ras-expressing Schwann cells were cultured with normal neurons. Yet, in organotypic cultures of neurons, Schwann cells, and fibroblasts without neurofibromin, myelination was dramatically reduced. We suggest that Nf1-dependent signaling cascades in neurons and/or fibroblasts, as well as Schwann cells, are required for normal myelination.
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Affiliation(s)
- T Rosenbaum
- Department of Cell Biology, Neurobiology, and Anatomy, University of Cincinnati Medical School, Ohio 45267-0521, USA
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Ling B, Zhuang H, Cui Y. [A cross-sectional study on HGV infection in a rural population]. Zhonghua Yi Xue Za Zhi 1998; 78:359-62. [PMID: 10923441] [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 determine the epidemiological characteristics and clinical significance of HGV infection, and to compare with HBV and HCV infections. METHODS Anti-HGV, HBsAg, anti-HBs, anti-HBc and anti-HCV were detected by enzyme-linked immunoassays (EIA). Anti-HGV positive sera were further tested for HGV RNA by a nested reverse transcription polymerase chain reaction (RT-nPCR). RESULTS The anti-HGV prevalence rate was 12.9%. It was relatively low in children under 10 years, and then increased with age and peaked in the group of 50-60 years of age (29.2%). The positive rate of HBsAg was 12.6%, and it quickly reached the highest (16.2%) in the 5-year old group. The prevalence rate of HBV infection was 64.9%, and increased to a high level in the group of 10 years of age, and maintained high up to 79.2% in the 50 years old group. The HCV infection rate was 15.3%. No anti-HCV positive cases were found in the group under 10 years of age. It was particularly high in the 20-40 years age group, and reached the peak in the group of 30 years old. No significant differences were found in the infection rates of HBV, HCV and HGV between male and female. HGV infection was associated with the history of blood donation, and the sexual transmission between couples. The anti-HGV positive rate of wives with anti-HGV positive husbands was 53.3%, significantly higher than that of those with anti-HGV negative husbands (7.8%). HGV coinfection with HBV or HCV had no influence on serum alanine aminotransferase (ALT). NO ALT elevation was found in the group with HGV infection alone. CONCLUSIONS The epidemiological characteristics of HGV infection are different from those of HBV and HCV. HGV is transmitted by blood and sex, and does not seem to cause liver damage.
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Affiliation(s)
- B Ling
- Department of Microbiology, Beijing Medical University
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Ling B, Berger-Bächi B. Increased overall antibiotic susceptibility in Staphylococcus aureus femAB null mutants. Antimicrob Agents Chemother 1998; 42:936-8. [PMID: 9559813 PMCID: PMC105572 DOI: 10.1128/aac.42.4.936] [Citation(s) in RCA: 29] [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] [Received: 10/06/1997] [Accepted: 02/06/1998] [Indexed: 02/07/2023] Open
Abstract
The staphylococcal pentaglycine side chain of the peptidoglycan is reduced to one glycine in femAB null mutants. This is associated with increased susceptibility to methicillin and to a whole range of unrelated antibiotics as well. Genetic evidence suggests that femAB null mutants are only viable because of a compensatory mutation in an unlinked site.
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Affiliation(s)
- B Ling
- Institute of Medical Microbiology, University of Zürich, Switzerland
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Zhang C, Yao H, Ling B. [Accumulative arsenic level in viscera in offsprings of exposed parent rats]. Zhonghua Yu Fang Yi Xue Za Zhi 1998; 32:76-8. [PMID: 10322801] [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: 02/12/2023]
Abstract
OBJECTIVE To explore the metabolism and accumulation of arsenic in the offsprings of exposed rats. METHODS Arsenic contents in viscera of the rat offsprings, whose parents exposed to different dose of arsenic, were determined with a two-generation reproductive test. RESULTS Arsenic contents in the heart, liver, brain, kidney and spleen of the offsprings correlated with the dose their exposed parents, the highest in the spleen. There was significant difference in arsenic contents of the viscera between two generations of rats. Arsenic contents in the viscera of the offsprings declined significantly one month after stopping exposure to arsenic, but still higher than that in controls. CONCLUSION It suggests that arsenic can deposit in the bodies of the rat offsprings, and excreted from the bodies slowly.
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Affiliation(s)
- C Zhang
- Department of Preventive Medicine, Xinjiang Medical College, Urümqi
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Ling B, Zuo JZ, Zhu XL, Gao JX. Schistosomiasis: the cleanup continues. World Health Forum 1997; 18:161-2. [PMID: 9392998] [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: 02/05/2023]
Abstract
During the past 40 years immense progress has been made in the control of schistosomiasis in China. The authors consider how the 100 million people in the country who are still at risk from the disease can be protected.
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Affiliation(s)
- B Ling
- Institute of Environmental Health and Engineering, Chinese Academy of Preventive Medicine, Beijing, China
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