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Zhou SG, Lu LJ, Yao YP, Shi L, Dai L, Hui YZ. [Florid cystic endosalpingiosis of uterine subserosa: report of a case]. Zhonghua Bing Li Xue Za Zhi 2024; 53:204-205. [PMID: 38281796 DOI: 10.3760/cma.j.cn112151-20230926-00219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Affiliation(s)
- S G Zhou
- Department of Pathology, Beijing Wuzhou Women and Children's Hospital, Beijing 100022, China
| | - L J Lu
- Department of Pathology, Beijing Wuzhou Women and Children's Hospital, Beijing 100022, China
| | - Y P Yao
- Department of Pathology, Beijing Wuzhou Women and Children's Hospital, Beijing 100022, China
| | - L Shi
- Department of Gynecology, Beijing Wuzhou Women and Children's Hospital, Beijing 100022, China
| | - L Dai
- Department of Pathology, Peking University People's Hospital, Beijing 100044, China
| | - Y Z Hui
- Department of Pathology, Beijing Wuzhou Women and Children's Hospital, Beijing 100022, China
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Zhang YQ, Wang R, Zhao DL, Shao MM, Geng SH, Lu LJ. [Efficacy and safety of modified Hartel approach in the treatment of primary trigeminal neuralgia with radiofrequency thermocoagulation]. Zhonghua Yi Xue Za Zhi 2023; 103:1134-1139. [PMID: 37055231 DOI: 10.3760/cma.j.cn112137-20221220-02681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
Objective: To assess the efficacy and safety of modified Hartel approach in the treatment of primary trigeminal neuralgia with radiofrequency thermocoagulation. Methods: A total of 89 patients with primary trigeminal neuralgia in Nanjing Drum Tower Clinical College of Xuzhou Medical University from July 2021 to July 2022 were prospectively included, and were divided into experimental group (n=45, modified Hartel approach: selecting 2.0 cm lateral to and 1.0 cm below angulus oris as insertion point) and control group (n=44, traditional Hartel approach: selecting 2.5 cm lateral to the angulus oris as insertion point) according to the random number table method. There were 19 males and 26 females in the experimental group, and aged (67.6±8.8) years. Meanwhile, there were 19 males and 25 females in the control group, and aged (64.8±11.7) years. All the patients were treated by CT-guided radiofrequency thermocoagulation. The success rate of one-time puncture, number of punctures, the time of puncture, operation time, numerical rating scale (NRS) scores and complications were recorded and compared between the two groups. Results: The success rate of one-time puncture in experimental group was 64.4% (29/45), which was higher than that in control group 31.8% (14/44) (P<0.05). The number of punctures [M (Q1, Q3)], the time of puncture [M (Q1, Q3)] and operation time in the experimental group were 1 (1, 2), 218 (206, 378) s, (19.9±2.7) min, which were less than those of control group [2 (1, 3), 390 (231, 598) s, (27.0±3.9) min] (all P<0.05). The NRS scores [M (Q1, Q3)] of 1 day, 1 month and 3 months after surgery in the experimental group were 1 (1, 2), 1 (0, 2) and 1(0, 1), respectively, which were lower than the baseline level [6 (6, 7)] (all P<0.05). The NRS scores [M (Q1, Q3)] of 1 day, 1 month and 3 months after surgery in the control group were 1 (1, 2), 1 (0, 2) and 1 (0, 2), respectively, which were lower than the baseline level [6 (6, 7)] (all P<0.05). There was no statistically significant difference in the incidence of nausea and vomiting, facial numbness, and decreased masticatory muscle strength between the two groups (all P>0.05) In the experimental group, two patients had puncture needles into the oral cavity, with timely detection and replacement of puncture needles, and no infection occurred. There was no cerebrospinal fluid leakage and decreased corneal reflex in both groups. Conclusion: The modified Hartel approach can significantly improve the success rate of one-time puncture via foramen ovale, reduce the operation time and the incidence of postoperative facial swelling, which is a safe and effective puncture method.
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Affiliation(s)
- Y Q Zhang
- Nanjing Drum Tower Clinical College of Xuzhou Medical University, Nanjing 210008, China
| | - R Wang
- Department of Pain Medicine, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - D L Zhao
- Department of Pain Medicine, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - M M Shao
- Department of Anesthesiology, Nanjing University Medical School, Nanjing 210093, China
| | - S H Geng
- Department of Pain Medicine, Nanjing Drum Tower Clinical College of Traditional Chinese and Western Medical University, Nanjing 210008, China
| | - L J Lu
- Nanjing Drum Tower Clinical College of Xuzhou Medical University, Nanjing 210008, China
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Li J, Zhou M, Feng JQ, Hong SM, Yang SY, Zhi LX, Lin WY, Zhu C, Yu YT, Lu LJ. Bulk RNA Sequencing With Integrated Single-Cell RNA Sequencing Identifies BCL2A1 as a Potential Diagnostic and Prognostic Biomarker for Sepsis. Front Public Health 2022; 10:937303. [PMID: 35832273 PMCID: PMC9272057 DOI: 10.3389/fpubh.2022.937303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 05/31/2022] [Indexed: 02/05/2023] Open
Abstract
Background Sepsis is one of the leading causes of morbidity and mortality worldwide in the intensive care unit (ICU). The prognosis of the disease strongly depends on rapid diagnosis and appropriate treatment. Thus, some new and accurate sepsis-related biomarkers are pressing needed and their efficiency should be carefully demonstrated. Methods Differential expression analysis and weighted gene co-expression network analysis (WGCNA) were applied to detect sepsis and monocyte/macrophage-related genes. Least absolute shrinkage and selection operator (LASSO) and random forest regression analyses were used in combination to screen out prognostic genes. Single-cell RNA sequence profiling was utilized to further verify the expression of these genes on a single cell level. Receiver operating characteristic (ROC) curve and decision curve analysis (DCA) were also applied to verify the diagnostic value of the target biomarkers. Results The intersections of the genes detected by differential expression and WGCNA analyses identified 141 overlapping candidate genes that were closely related to sepsis and macrophages. The LASSO and random forest regression analyses further screened out 17 prognostic genes. Single-cell RNA sequencing analysis detected that FCGR1A and BCL2A1 might be potential biomarkers for sepsis diagnosis and the diagnostic efficacy of BCL2A1 was further validated by ROC curve and DCA. Conclusions It was revealed that BCL2A1 had good diagnostic and prognostic value for sepsis, and that it can be applied as a potential and novel biomarker for the management of the disease.
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Affiliation(s)
- Jun Li
- Department of Rheumatology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Mi Zhou
- Department of Rheumatology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jia-Qi Feng
- Department of Rheumatology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Soon-Min Hong
- Department of Rheumatology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Shao-Ying Yang
- Department of Rheumatology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Lang-Xian Zhi
- Department of Rheumatology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wan-Yi Lin
- Department of Rheumatology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Cheng Zhu
- Department of Disease Prevention and Control, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yue-Tian Yu
- Department of Critical Care Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liang-Jing Lu
- Department of Rheumatology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Han Y, Li R, Yang RQ, Zhang CM, Liu HS, Gao W, Wen LT, Chen J, Chen Y, Lu LJ, Zha DJ. [Analysis of clinical features and surgical outcomes of petrous bone cholesteatomas]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:827-834. [PMID: 35866275 DOI: 10.3760/cma.j.cn115330-20210630-00398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To analyze the clinical features and surgical outcomes of petrous bone cholesteatomas (PBCs). Methods: Data from 39 PBCs patients treated in the Department of Otorhinolaryngology, Xijing Hospital from September 2011 to December 2017 were reviewed retrospectively, including 23 males, 16 femals, aged 12-71 years old, with the median age of 37. Clinical classifications, surgical methods, facial and hearing function, and intraoperative and postoperative complications were made summary analysis. Results: In this study, five patients were congenital PBCs and 34 patients were acquired PBCs. The common clinical symptoms were hearing loss (100%, 39/39), ear discharge/pus (89.7%, 35/39) and facial paralysis (46.2%, 18/39). According to Sanna's classification, 14 cases were supralabyrinthine, including three cases underwent transcochlear (TC) approach, six cases underwent transotic (TO) approach and five underwent translabyrinthine (TL) approach. 10 cases were infralabyrinthine, including eight cases underwent subtotal petrosectomy, one case underwent TO approach and one underwent TL approach.10 cases were massive, including seven cases underwent TC approach, three cases underwent TO approach. Five cases were infralabyrinthine-apical, including two cases underwent TC approach, two cases underwent TO approach, and one case underwent endoscope assisted infratemporal fossa type B. The degree of facial nerve (FN) dysfunction from high to low was massive (6/10), supralabyrinthine (8/14), infralabyrinthine-apical (2/5) and infralabyrinthine (2/10). 19 cases involved in facial nerve operation, three cases underwent FN decompression, four cases underwent FN rerouting, four cases underwent nerve grafting, and one case underwent facial-hypoglossal anastomosis. Preoperative FN involvement in 18 cases, and the FN function was improved in 14 cases after surgery. The improved rate of postoperative FN function was 77.8%. The bone conducted hearing retained 50.0% (14/28) postoperatively. Five cases with cerebrospinal fluid leak were managed by inserting free muscle plugs and cavity obliteration. Two cases with the cholesteatomas matrix involved the sigmoid sinus and the jugular bulb, and occlusion of the sigmoid sinus was performed. Postoperatively, two patients presented with synkinesis. The patients were followed up for 40 to 115 months, and there was no recurrence. Conclusions: There are no specific clinical manifestations for PBCs, thus, it is difficult in early diagnosis and treatment. According to Sanna's classification, preoperative FN and hearing function, the best surgical approach should be selected with minimal recurrences and perioperative morbidity.
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Affiliation(s)
- Y Han
- Department of Otorhinolaryngology, Xijing Hospital, Air Force Medical University, Xi'an 710032, China National Clinical Research Center for Otolaryngologic Diseases of Shaanxi Sub Center, Xi'an 710032, China
| | - R Li
- Department of Otorhinolaryngology, Xijing Hospital, Air Force Medical University, Xi'an 710032, China National Clinical Research Center for Otolaryngologic Diseases of Shaanxi Sub Center, Xi'an 710032, China Yan'an University Graduate School,Yan'an 716000, China
| | - R Q Yang
- Department of Otorhinolaryngology, Xijing Hospital, Air Force Medical University, Xi'an 710032, China National Clinical Research Center for Otolaryngologic Diseases of Shaanxi Sub Center, Xi'an 710032, China
| | - C M Zhang
- Department of Otorhinolaryngology, Xijing Hospital, Air Force Medical University, Xi'an 710032, China National Clinical Research Center for Otolaryngologic Diseases of Shaanxi Sub Center, Xi'an 710032, China
| | - H S Liu
- Department of Radiology, Xi'an Central Hospital, Xi'an Jiaotong University, Xi'an 710003, China
| | - W Gao
- Department of Otorhinolaryngology, Tangdu Hospital, Air Force Medical University, Xi'an 710038, China
| | - L T Wen
- Department of Otorhinolaryngology, Xijing Hospital, Air Force Medical University, Xi'an 710032, China National Clinical Research Center for Otolaryngologic Diseases of Shaanxi Sub Center, Xi'an 710032, China
| | - J Chen
- Department of Otorhinolaryngology, Xijing Hospital, Air Force Medical University, Xi'an 710032, China National Clinical Research Center for Otolaryngologic Diseases of Shaanxi Sub Center, Xi'an 710032, China
| | - Y Chen
- Department of Otorhinolaryngology, Xijing Hospital, Air Force Medical University, Xi'an 710032, China National Clinical Research Center for Otolaryngologic Diseases of Shaanxi Sub Center, Xi'an 710032, China
| | - L J Lu
- Department of Otorhinolaryngology, Tangdu Hospital, Air Force Medical University, Xi'an 710038, China
| | - D J Zha
- Department of Otorhinolaryngology, Xijing Hospital, Air Force Medical University, Xi'an 710032, China National Clinical Research Center for Otolaryngologic Diseases of Shaanxi Sub Center, Xi'an 710032, China
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Wang AC, Xie JL, Wang YN, Sun XF, Lu LJ, Sun YF, Gu YQ. [Autopsies and placental examinations of perinatal fetal deaths: a clinicopathological analysis of 105 cases]. Zhonghua Bing Li Xue Za Zhi 2022; 51:431-436. [PMID: 35511639 DOI: 10.3760/cma.j.cn112151-20210908-00657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To summarize the clinicopathological factors related to perinatal fetal death and to evaluate importance of fetal autopsy and placental pathology. Methods: The clinicopathological data of 105 perinatal fetal deaths in Beijing Haidian Maternal and Child Health Hospital from November 2012 to December 2020 were retrospectively analyzed. Relevant literature was also reviewed. Results: The maternal age of the deceased fetuses ranged from 22 to 43 years with the average (31.35±4.04 years), and the gestational weeks were 28-40+6 weeks. Among them, 101 were singleton cases and 4 twin cases. 103 fetuses died in uterus and 2 died during delivery. Relevant factors analysis of the 105 perinatal fetal deaths showed that 86 cases (81.9%, 86/105) were related to umbilical cord/placental abnormality, 10 cases (9.5%, 10/105) uterine infection, 6 cases (5.7%, 6/105) fetal factors, 1 case was fetal maternal blood transfusion syndrome, 1 case twin blood transfusion syndrome, and 1 case died of complete uterine rupture. Among the 86 cases related to umbilical cord/placental abnormality, the diagnosis was most often based on the gross examination of placenta. The most common cause of death was umbilical cord torsion with thin root, followed by placental abruption, tight umbilical cord winding, vascular rupture and umbilical cord true knot. The morphology of placenta revealed mainly functional changes. Among the 10 cases related to intrauterine infections, the placenta generally showed lobular placental edema. The morphological characteristics of ascending infection were mainly acute chorioamnionitis, and the morphological characteristics of blood-borne infection were mainly acute or chronic villitis, as well as villous interstitial inflammation. Identification of viral inclusions suggested viral etiology, while the final diagnosis was relied on laboratory testing. Among the 6 cases related to fetal abnormality, the diagnostic value of placenta was limited and the diagnosis could be made with fetal autopsy. Conclusion: The causes of perinatal fetal death are complex, diverse, and often the synergistic result of multiple factors. Fetal autopsy and placental pathology are the key technical means to identify the cause of death and deserve more attention and utilization.
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Affiliation(s)
- A C Wang
- Department of Pathology, Haidian Maternal and Children Health Hospital, Beijing 100081, China
| | - J L Xie
- Department of Pathology, Haidian Maternal and Children Health Hospital, Beijing 100081, China
| | - Y N Wang
- Department of Pathology, Haidian Maternal and Children Health Hospital, Beijing 100081, China
| | - X F Sun
- Department of Pathology, Haidian Maternal and Children Health Hospital, Beijing 100081, China
| | - L J Lu
- Department of Pathology, Haidian Maternal and Children Health Hospital, Beijing 100081, China
| | - Y F Sun
- Department of Pathology, Haidian Maternal and Children Health Hospital, Beijing 100081, China
| | - Y Q Gu
- Department of Pathology, Haidian Maternal and Children Health Hospital, Beijing 100081, China
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Wang AC, Xie JL, Wang YN, Sun XF, Lu LJ, Sun YF, Gu YQ. [Singleton placentas with abnormal shape: a clinicopathological analysis of 130 cases]. Zhonghua Bing Li Xue Za Zhi 2022; 51:39-43. [PMID: 34979752 DOI: 10.3760/cma.j.cn112151-20210508-00346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the pathological characteristics of singleton placenta with abnormal shape and its influence on the outcome of maternal-fetal pregnancy. Methods: The clinicopathological data of singleton placentas with abnormal shape from January 2014 to December 2020 in the Department of Pathology, Haidian Maternal and Children Health Hospital were analyzed retrospectively. Results: There were 130 singleton placentas with abnormal shape in this cohort, including 48 succenturiate placentas, 12 bilobed placentas, 50 marginate placentas, 13 circumvallate placentas, 3 annular placentas, 2 membranous placentas and 2 fenestrated placentas. Gestational age ranged from 29+5 to 40+4 weeks. There were 51 cases of premature rupture of membranes, 11 cases of placenta previa, 5 cases of placental abruption, 15 cases of placental adhesion/implantation and 27 cases of postpartum hemorrhage. There were 46 preterm fetuses,28 fetuses with fetal growth restriction, 22 fetuses with intrauterine distress, and 1 fetus with intrauterine death. Grossly, the placental lobules of succenturiate placentas had apparent size difference, while two lobules of bilobate placenta were more consistent. The chorionic plate size was smaller than the bottom plate of circumvallate placenta, the folded fetal membrane in the rim of placenta was thickened (termed marginate placenta if there was no thickening). The membranous placenta was characterized by a thin, large membrane-like shape. Annular placenta showed characteristic hollow cylinder, ring or horseshoe-shape. Fenestrated placenta was characterized by tissue defects near central area. Microscopically, functional/morphologic changes were the main manifestations of inadequate maternal-fetal perfusion, including villous infarction, distal villous dysplasia and excessive villous maturation. Conclusions: The abnormal shaped singleton placentas showed variable extent of inadequate maternal-fetal perfusion, which may lead to adverse pregnancy outcomes such as premature delivery, fetal growth restriction, intrauterine distress or fetal death.
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Affiliation(s)
- A C Wang
- Department of Pathology, Haidian Maternal & Children Health Hospital, Beijing 100081, China
| | - J L Xie
- Department of Pathology, Haidian Maternal & Children Health Hospital, Beijing 100081, China
| | - Y N Wang
- Department of Pathology, Haidian Maternal & Children Health Hospital, Beijing 100081, China
| | - X F Sun
- Department of Pathology, Haidian Maternal & Children Health Hospital, Beijing 100081, China
| | - L J Lu
- Department of Pathology, Haidian Maternal & Children Health Hospital, Beijing 100081, China
| | - Y F Sun
- Department of Pathology, Haidian Maternal & Children Health Hospital, Beijing 100081, China
| | - Y Q Gu
- Department of Pathology, Haidian Maternal & Children Health Hospital, Beijing 100081, China
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Liu YX, Zhu C, Wu ZX, Lu LJ, Yu YT. A bibliometric analysis of the application of artificial intelligence to advance individualized diagnosis and treatment of critical illness. Ann Transl Med 2022; 10:854. [PMID: 36111047 PMCID: PMC9469176 DOI: 10.21037/atm-22-913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 07/08/2022] [Indexed: 02/05/2023]
Abstract
Background Artificial intelligence (AI) has been extensively applied in the individualized diagnosis and treatment of critical illness, and numerous studies have been published on this topic. Therefore, a bibliometric analysis of these publications should be performed to provide a direction of hot topics and future research trends. Methods A bibliometric analysis was performed on the research articles to identify the hot topics and any unsolved issues regarding the use of AI in individualized diagnosis and treatment of critical illness. Articles published from January 2011 to December 2021 were retrieved from the Web of Science (WOS) core collection database for bibliometric analysis, and a cross-sectional analysis of the relevant studies that had been registered at ClinicalTrials.gov was also conducted. Results The number of articles published showed an annually increasing trend, with a worldwide geographic distribution over the past decade. Ultimately, 427 research articles were included in the bibliometric analysis. The relevant articles were divided into four separate clusters that focused on AI application aspects, prediction model establishment, coronavirus disease 2019 (COVID-19) treatment and outcome assessments, respectively. “Machine learning” was the most frequent keyword (147 occurrences, 165 links, and 395 total link strengths) followed by “risk”, “models”, and “mortality”. With 205 articles, the United States of America (USA) had interacted the most with other countries (20 links, and 94 total link strength), while the domestic research institutes in China had infrequently collaborated with others. Approximately 130 trials focusing on the application of AI in the intensive care unit (ICU) and emergency department (ED) had been registered at ClinicalTrial.gov, and most of them (n=71, 54.6%) were interventional. The main research objectives of these trials were to provide decision making assistance and establish prediction models. However, only 3.8% (5 trials) of them had reached exact conclusions which favored the application of AI. Conclusions The application of AI has raised great interest in critical illness and has mainly been focused on decision making assistance and prediction model establishment. Cooperation between agencies engaged in AI research needs to be strengthened. An increasing number of trials have been registered at ClinicalTrial.gov, and the results of them are promising. Keywords Bibliometric analysis; artificial intelligence (AI); individualized diagnosis; critical care medicine; emergency department (ED)
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Affiliation(s)
- Yang-Xi Liu
- Department of Pharmacy, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Cheng Zhu
- Department of Disease Prevention and Control, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhi-Xiong Wu
- Department of Critical Care Medicine, Huadong Hospital, Fudan University, Shanghai, China
| | - Liang-Jing Lu
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yue-Tian Yu
- Department of Critical Care Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Pan XQ, Wang R, Zhao DL, Zhang YQ, Shao MM, Han Y, Lu LJ. [Application of 3D-printed navigation plate in pulsed radiofrequency therapy of dorsal root ganglion in thoracic postherpetic neuralgia]. Zhonghua Yi Xue Za Zhi 2021; 101:3542-3548. [PMID: 34808745 DOI: 10.3760/cma.j.cn112137-20210702-01491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the accuracy, efficacy and safety of 3D-printed personalized navigation template in the treatment of thoracic postherpetic neuralgia (PHN) with dorsal root ganglion pulsed radiofrequency (DRG-PRF). Methods: A total of 63 patients with thoracic PHN from March 2019 to December 2020 in Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School were enrolled and randomly divided into study group (n=31) and control group (n=32) by random number table method. The study group received DRG-PRF treatment assisted by 3D-printed navigation template, while the control group received DRG-PRF treatment guided by conventional CT. The one-time success rate of puncture, the incidence of puncture times ≥3, the number of punctures, puncture time, visual analogue scale (VAS) score and surgical complications between the two groups were compared. Results: The one-time success rate of puncture in study group was 84.9% (79/93), which was higher than that of control group [30.2% (29/96)] (P<0.001). The incidence of puncture times ≥3, the number of punctures, puncture time in study group were 4.3% (4/93), 1 (1, 1) and 2.9 (2.8, 3.0) min, respectively, which were lower than that of the control group [21.9% (21/96), 2(1, 3), 9.0 (4.5, 12.9) min, respectively] (all P<0.01). No difference was found in VAS score at each time point before and after surgery between the two groups (all P>0.05). There was one case of pleura puncture in the control group, but no other complications such as straying into vertebral canal, hematoma, spinal cord injury, limb movement disorder, infection were found in the two groups. Conclusions: 3D-printed personalized navigation template is an effective method to guide DRG-PRF for the treatment of thoracic postherpetic neuralgia. It can significantly improve the surgical efficiency of DRG-PRF, but has no significant effect on the surgical efficacy.
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Affiliation(s)
- X Q Pan
- Nanjing Drum Tower Clinical College of Xuzhou Medical University,Nanjing 210008,China
| | - R Wang
- Department of Pain Medicine,Nanjing Drum Tower Hospital,the Affiliated Hospital of Nanjing University Medical School,Nanjing 210008,China
| | - D L Zhao
- Department of Pain Medicine,Nanjing Drum Tower Hospital,the Affiliated Hospital of Nanjing University Medical School,Nanjing 210008,China
| | - Y Q Zhang
- Nanjing Drum Tower Clinical College of Xuzhou Medical University,Nanjing 210008,China
| | - M M Shao
- Medical School of Nanjing University,Nanjing 210093,China
| | - Y Han
- Department of Pain Medicine,Nanjing Drum Tower Hospital,the Affiliated Hospital of Nanjing University Medical School,Nanjing 210008,China
| | - L J Lu
- Nanjing Drum Tower Clinical College of Xuzhou Medical University,Nanjing 210008,China
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Zhou SG, Lu LJ, Dai L, Yang SH, Hui YZ. [Endometrial cavernous hemangiomatous polyp: report of a case]. Zhonghua Bing Li Xue Za Zhi 2021; 50:1061-1063. [PMID: 34496503 DOI: 10.3760/cma.j.cn112151-20210319-00215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- S G Zhou
- Department of Pathology, Beijing Wuzhou Women and Children's Hospital, Beijing 100022, China
| | - L J Lu
- Department of Pathology, Beijing Wuzhou Women and Children's Hospital, Beijing 100022, China
| | - L Dai
- Department of Pathology, Peking University People's Hospital, Beijing 100044, China
| | - S H Yang
- Department of Gynecology, Beijing Wuzhou Women and Children's Hospital, Beijing 100022, China
| | - Y Z Hui
- Department of Pathology, Beijing Wuzhou Women and Children's Hospital, Beijing 100022, China
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Xu A, Ye Y, Fu Q, Lian X, Chen S, Guo Q, Lu LJ, Dai M, Lv X, Bao C. Prognostic values of anti-Ro52 antibodies in anti-MDA5-positive clinically amyopathic dermatomyositis associated with interstitial lung disease. Rheumatology (Oxford) 2021; 60:3343-3351. [PMID: 33331866 DOI: 10.1093/rheumatology/keaa786] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [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: 05/15/2020] [Revised: 08/11/2020] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE Anti-Ro52 antibody often co-occurs with anti-Jo1 antibody in antisynthetase syndrome and their co-occurrence correlates with a more aggressive clinical phenotype and poorer prognosis. The strong association of anti-Ro52 antibody with anti-melanoma differentiation-associated protein-5 (anti-MDA5) antibody has been indicated in juvenile myositis. The aim of this study was to assess the clinical significance of anti-Ro52 antibody in a cohort of adult patients with anti-MDA5-positive clinically amyopathic dermatomyositis with interstitial lung disease (CADM-ILD). METHODS We assessed a cohort of 83 consecutive patients with anti-MDA5-positive CADM-ILD. Anti-MDA5 antibodies and anti-Ro52 antibodies were detected in immunoblotting and semi-quantitatively analysed by densitometry. Clinical features and the 24 month survival were compared between anti-MDA5-positive patients with and without anti-Ro52 antibodies. RESULTS Anti-Ro52 antibodies were found in 74.7% of anti-MDA5-positive CADM-ILD patients and were associated with an increased frequency of rapidly progressive interstitial lung disease (RP-ILD; 54.8% vs 23.8%; P = 0.014) and cutaneous ulcerations (27.4% vs 4.8%; P = 0.033). The cumulative 24 month survival rate tended to be lower in patients with anti-Ro52 antibodies than patients without (59.9% vs 85.7%; P = 0.051). The combination of anti-Ro52 antibody status and anti-MDA5 antibody levels further stratified patients' survival rates, showing that the survival rate of patients who were dual positive for anti-MDA5 antibody and anti-Ro52 antibody was significantly lower than patients with mild positive anti-MDA5 antibody alone (59.9% vs 100%; P = 0.019). CONCLUSION Anti-Ro52 antibody is highly prevalent in anti-MDA5-positive CADM-ILD patients and their coexistence correlates with a subgroup of patients with more aggressive phenotypes. The combination of anti-MDA5 antibody levels and anti-Ro52 antibody status could help to predict patients' prognosis and guide risk-based therapy.
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Affiliation(s)
- Antao Xu
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Ye
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiong Fu
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xinyue Lian
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sheng Chen
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiang Guo
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liang-Jing Lu
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Min Dai
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xia Lv
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chunde Bao
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Zhang H, Pan JJ, Jiang XF, Lin JJ, Lu LJ, Chu JG. [Study of portal venous pressure gradient to predict high-hepatic encephalopathy-risk population post TIPS]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:72-74. [PMID: 33548970 DOI: 10.3760/cma.j.cn501113-20190716-00248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Transjugular intrahepatic portosystemic shunt (TIPS) can effectively reduce the portal venous pressure and relieve the clinical complications related to portal hypertension. However, hepatic encephalopathy (HE) is still the main complication post TIPS. Studies have shown that patients over 65 years old with liver function reserve in Child-Pugh grade C are the high-HE-risk group post TIPS, and early TIPS treatment can benefit the survival of these high-risk patients. In this study, TIPS was used to treat 60 cases aged > 65 years old and liver function reserve in Child-Pugh grade C (decompensated liver cirrhosis) with esophagogastric variceal bleeding. The clinical results of 1-year was observed and the porto systemic gradient (PSG) was evaluated. The relationship between the incidence of HE and the PSG of patients with and without HE were compared to evaluate the effect of PSG on the incidence of HE.
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Affiliation(s)
- H Zhang
- Department of Gastroenterology, Wenzhou Central Hospital, Wenzhou 325000, China
| | - J J Pan
- Department of Radiology, Wenzhou People's Hospital, Wenzhou 325000, China
| | - X F Jiang
- Department of Gastroenterology, Wenzhou Central Hospital, Wenzhou 325000, China
| | - J J Lin
- Department of Gastroenterology, Wenzhou Central Hospital, Wenzhou 325000, China
| | - L J Lu
- Department of Gastroenterology, Wenzhou Central Hospital, Wenzhou 325000, China
| | - J G Chu
- Department of Radiology, Air Force General Hospital, Beijing 100142, China
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12
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Gao F, Ren JY, Bi BJ, Lu LJ, Han Z, Pan YH. Double Kirschner-wires percutaneous antegrade intramedullary fixation for treatment of unstable phalangeal neck fractures in adults. J BIOL REG HOMEOS AG 2020; 34:623-627. [PMID: 32486633 DOI: 10.23812/20-07-l-44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- F Gao
- Department of Hand and Foot Surgery, The Affiliated Hospital of Qingdao University; Shandong, China
| | - J Y Ren
- Department of Hand and Foot Surgery, The Affiliated Hospital of Qingdao University; Shandong, China
| | - B J Bi
- Department of Hand and Foot Surgery, The Affiliated Hospital of Qingdao University; Shandong, China
| | - L J Lu
- Department of Hand Surgery, The First Hospital of Jilin University, Jilin, China
| | - Z Han
- Department of Hand and Foot Surgery, The Affiliated Hospital of Qingdao University; Shandong, China
| | - Y H Pan
- Department of Hand and Foot Surgery, The Affiliated Hospital of Qingdao University; Shandong, China
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Gao W, Lu LJ, Wen LT, Han Y, Song YL, Chen Y, Zha DJ. [Surgical management of petrous bone cholesteatoma and facial nerve protection]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:97-100. [PMID: 30808129 DOI: 10.13201/j.issn.1001-1781.2019.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Indexed: 11/12/2022]
Abstract
Objective: To discuss the therapeutic scheme of petrous bone cholesteatoma(PBC) and the technique of facial nerve reconstruction. Method: The data of 28 patients who underwent surgery for PBC in our center were analyzed retrospectively. All patients were diagnosed radiologically with PBCs and reconfirmed pathologically after surgery. The surgical approach was discussed basing Sanna's classification of PBCs, and the facial nerve outcomes were analyzed moreover. Result: PBC cases 11 were supralabyrinthine, 4 infralabyrinthine, 3 infralabyrinthine-apical, 10 massive and none apical. The facial nerve was involved in 50% of the cases. The translabyrinthine approach were used in 3 cases. The transotic approach was used in 7 cases in this series.The transcochlear approach type was applied in 12 cases. The Infratemporal fossa type B approach and subtotal petrosectomy were employed in 2 cases and 4 cases respectively. Active management of the nerve(rerouting, anastomosis, or grafting) was required in 14 cases, postoperative facial nerve function were inproved in 10 cases(71.43%). Conclusion: The appropriate surgery approach was vitally important to radical disease clearance in PBCs. The facial nerve preservation was preceded hearing preservation. Active facial nerve management were beneficial to facial nerve recovery..
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Affiliation(s)
- W Gao
- Department of Otolaryngology Head and Neck Surgery, the Air Force Military Medical University, Tangdu Hospital, Xi'an, 710038, China
| | - L J Lu
- Department of Otolaryngology Head and Neck Surgery, the Air Force Military Medical University, Tangdu Hospital, Xi'an, 710038, China
| | - L T Wen
- Department of Otolaryngology Head and Neck Surgery, the Air Force Military Medical University, Xijing Hospital
| | - Y Han
- Department of Otolaryngology Head and Neck Surgery, the Air Force Military Medical University, Xijing Hospital
| | - Y L Song
- Department of Otolaryngology Head and Neck Surgery, the Air Force Military Medical University, Xijing Hospital
| | - Y Chen
- Department of Otolaryngology Head and Neck Surgery, the Air Force Military Medical University, Xijing Hospital
| | - D J Zha
- Department of Otolaryngology Head and Neck Surgery, the Air Force Military Medical University, Xijing Hospital
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Su SS, Wang SL, Lu LJ, Lin L. Association of Interleukin-23 Receptor Gene Single Nucleotide Polymorphisms with Ankylosing Spondylitis. Ann Clin Lab Sci 2016; 46:470-473. [PMID: 27650612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE It has been shown previously that the IL-23 receptor (IL-23R) variants are associated with ankylosing spondylitis (AS). It is unknown whether IL-23R is associated with AS in the Chinese population. The present study was performed to examine the association of IL-23R gene polymorphisms with susceptibility to AS in the Chinese population. METHODS A total of 157 Chinese Han patients with AS and 150 ethnically matched healthy controls were enrolled. All patients were diagnosed with AS according to the modified New York criteria. 8 single nucleotide polymorphisms (SNPs) of the IL-23R gene cluster were genotyped. RESULTS None of the 8 IL-23R SNPs were found to be associated with AS in the Chinese population. CONCLUSION The association of IL-23R and AS that is seen in Caucasian patients with AS is not present in Chinese patients with AS.
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Affiliation(s)
- Song-Sen Su
- Department of Rheumatology, First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, Fujian, China
| | - Su-Li Wang
- Department of Rheumatology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Liang-Jing Lu
- Department of Rheumatology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ling Lin
- Department of Rheumatology, the Second Affiliated Hospital, Fujian Medical University, Quanzhou, Fujian, China
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Swertfeger D, Li H, Rebholz S, Shah AS, Davidson WS, Lu LJ. Abstract 547: Proteomic Correlation of Gel Filtration Lipoprotein Subfractions with Atheroprotective Functions of HDL. Arterioscler Thromb Vasc Biol 2016. [DOI: 10.1161/atvb.36.suppl_1.547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
HDL has been shown to possess a variety of cardio-protective functions, including removal of excess cholesterol from the periphery, inhibition of oxidation, and stimulation of endothelial function. It has been proposed that various HDL sub-particles exist, each with distinct protein and lipid compositions. We hypothesized that fractionation of plasma would separate HDL particles with different protein compositions into distinct populations responsible for different HDL functions. Plasma from 10 healthy adults was fractionated by gel filtration and the protein composition of phospholipid containing fractions was analyzed by mass spectrometry. Each fraction was assessed for its ability to efflux cholesterol from macrophages, as well as its ability to inhibit LDL oxidation. Correlations were made between individual proteins in the HDL fractions and their ability to participate in both functional assays. One peak of activity was found in the cholesterol efflux assay when analyzing fractions in the HDL range. Cholesterol efflux activity did not correlate strongly with any protein in the HDL range of fractions, though there was a weak correlation with Protein S (r=0.337, p<0.01). However, the phospholipid (PL) and cholesterol (CH) concentration of the fractions correlated strongly with efflux (r=0.75. and r=0.61 respectively, both p<0.00001) across all fractions (both LDL and HDL). In contrast, the PL or CH content were not correlated with anti-oxidation activity. However, there were 2 strong peaks of anti-oxidation activity in the HDL range that did correlate with specific proteins (all values of r>0.3 and p<0.05). Activity in the first peak, fraction 25, in the small HDL range, correlated most strongly with ceruloplasmin and inter-α-trypsin inhibitor 4, while activity in the second peak, fraction 28, in the minimally lipidated/free protein range, correlated with gelsolin and albumin. In conclusion, we have shown that PL and CH correlate more strongly with cholesterol efflux than any protein in the HDL sub-fractions, while the protein composition of particular HDL sub-fractions is a better indicator of its anti-oxidative capacity than the PL or CH concentration.
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Affiliation(s)
- Debi Swertfeger
- Div of Biomedical Informatics, Cincinnati Children's Hosp, Cincinnati, OH
| | - Hailong Li
- Div of Biomedical Informatics, Cincinnati Children's Hosp, Cincinnati, OH
| | | | - Amy S Shah
- Endocrinology, Cincinnati Children's Hosp, Cincinnati, OH
| | - W S Davidson
- Dept of Pathology, Univ of Cincinnati, Cincinnati, OH
| | - L J Lu
- Div of Biomedical Informatics, Cincinnati Children's Hosp, Cincinnati, OH
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Wang FF, Huang XF, Shen N, Leng L, Bucala R, Chen SL, Lu LJ. A genetic role for macrophage migration inhibitory factor (MIF) in adult-onset Still's disease. Arthritis Res Ther 2014; 15:R65. [PMID: 23721694 PMCID: PMC4060242 DOI: 10.1186/ar4239] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 10/17/2013] [Accepted: 05/30/2013] [Indexed: 11/13/2022] Open
Abstract
Introduction Adult-onset still's disease (AOSD) is a rare systemic inflammatory disorder in which abnormalities in inflammatory cytokines production appear to play a pathophysiological role. Our previous work has reported increased expression of macrophage migration inhibitory factor (MIF) and revealed its correlation with disease severity and activity in AOSD. A -173 G/C single nucleotide polymorphism (SNP) (rs755622) and a -794 CATT5-8 repeat (rs5844572) in the MIF promoter have been reported. In this study, we sought to explore the relationship between functional MIF promoter polymorphisms and MIF expression in AOSD. Methods 100 patients and 200 controls were recruited in the study. A polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay was utilized to analyze the -173 G/C SNP (rs755622) and PCR-based size discrimination assay was applied to detect the -794 CATT5-8 repeat (rs5844572) in the MIF promoter. Plasma MIF levels were measured by ELISA. MIF mRNA levels were quantified by real-time reverse transcription (RT)-PCR. Bisulfate genomic sequencing was employed to evaluate DNA methylation status within the MIF promoter. Results We identified that the frequencies of MIF -794 CATT5 (P = 0.001) allele and the expression of MIF (P <0.001) were increased in patients compared to healthy controls. Plasma levels of MIF in patients with CC genotype were higher than those of patients with GC or GG genotypes (P = 0.05). In patients with established AOSD, a higher frequency of -794 CATT7 containing MIF genotypes was observed in those with liver dysfunction (P = 0.009). Haplotype analysis revealed a higher representation of the MIF haplotype defined by -173*C/-794 CATT5 (C5) in AOSD patients (P = 0.001). Conclusion Functional promoter polymorphisms in the MIF gene influence plasma MIF levels in AOSD and may contribute to disease susceptibility or clinical presentation of AOSD.
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Feng FM, Liu XX, Sun YH, Zhang P, Sun SF, Zhang B, Wang XT, Lu LJ. Independent and joint effects of the IL-6 and IL-10 gene polymorphisms in pulmonary tuberculosis among the Chinese Han population. Genet Mol Res 2014; 13:7766-72. [PMID: 25299090 DOI: 10.4238/2014.september.26.14] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We investigated the association between interleukin (IL)-6 and IL-10 gene polymorphisms and the susceptibility to pulmonary tuberculosis (PTB). DNA samples were obtained from 191 Han Chinese patients with PTB and 191 healthy control subjects. IL-6 (-572, -174, -597) and IL-10 (-1082, -819) polymorphisms were analyzed using polymerase chain reaction-restriction fragment length polymorphism. The IL-6 -572 C/C and IL-10 -819 T/T genotypes were observed less frequently in the case group than in the control group, with crude odds ratios of 0.591 [95% confidence interval (CI) = 0.381-0.917] and 0.401 (95%CI = 0.257-0.627), respectively. A significant association remained after adjusting for environmental factors in multivariate logistic analysis. The homozygote genotypes of IL-6 -572 and IL-10 -819 had an adjusted OR of 0.565 (95%CI = 0.356-0.898) and 0.341 (95%CI = 0.210-0.553), respectively. These results indicate that the mutant heterozygote IL-10 -1082 A/ G+G/G genotype and the homozygote IL-10 -819 T/T genotype have a combined effect on PTB. These results suggest that the IL-6 -572 C/C and IL-10 -819 T/T genotype polymorphisms are protective factors against PTB.
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Affiliation(s)
- F M Feng
- Key Laboratory of Occupational Health and Safety, School of Public Health, Hebei United University, Tangshan, China
| | - X X Liu
- Key Laboratory of Occupational Health and Safety, School of Public Health, Hebei United University, Tangshan, China
| | - Y H Sun
- Key Laboratory of Occupational Health and Safety, School of Public Health, Hebei United University, Tangshan, China
| | - P Zhang
- Tangshan Tuberculosis Hospital, Tangshan, China
| | - S F Sun
- College of Nursing and Rehabilitation, Hebei United University, Tangshan, China
| | - B Zhang
- Key Laboratory of Occupational Health and Safety, School of Public Health, Hebei United University, Tangshan, China
| | - X T Wang
- Key Laboratory of Occupational Health and Safety, School of Public Health, Hebei United University, Tangshan, China
| | - L J Lu
- Key Laboratory of Occupational Health and Safety, School of Public Health, Hebei United University, Tangshan, China
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Li HJ, Zhang X, Zhang F, Wen XH, Lu LJ, Shen J. Enhanced repair effect of toll-like receptor 4 activation on neurotmesis: assessment using MR neurography. AJNR Am J Neuroradiol 2014; 35:1608-14. [PMID: 24874529 DOI: 10.3174/ajnr.a3977] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND PURPOSE Alternative use of molecular approaches is promising for improving nerve regeneration in surgical repair of neurotmesis. The purpose of this study was to determine the role of MR imaging in assessment of the enhanced nerve regeneration with toll-like receptor 4 signaling activation in surgical repair of neurotmesis. MATERIALS AND METHODS Forty-eight healthy rats in which the sciatic nerve was surgically transected followed by immediate surgical coaptation received intraperitoneal injection of toll-like receptor 4 agonist lipopolysaccharide (n = 24, study group) or phosphate buffered saline (n = 24, control group) until postoperative day 7. Sequential T2 measurements and gadofluorine M-enhanced MR imaging and sciatic functional index were obtained over an 8-week follow-up period, with histologic assessments performed at regular intervals. T2 relaxation times and gadofluorine enhancement of the distal nerve stumps were measured and compared between nerves treated with lipopolysaccharide and those treated with phosphate buffered saline. RESULTS Nerves treated with lipopolysaccharide injection achieved better functional recovery and showed more prominent gadofluorine enhancement and prolonged T2 values during the degenerative phase compared with nerves treated with phosphate buffered saline. T2 values in nerves treated with lipopolysaccharide showed a more rapid return to baseline level than did gadofluorine enhancement. Histology exhibited more macrophage recruitment, faster myelin debris clearance, and more pronounced nerve regeneration in nerves treated with toll-like receptor 4 activation. CONCLUSIONS The enhanced nerve repair with toll-like receptor 4 activation in surgical repair of neurotmesis can be monitored by using gadofluorine M-enhanced MR imaging and T2 relaxation time measurements. T2 relaxation time seems more sensitive than gadofluorine M-enhanced MR imaging for detecting such improved nerve regeneration.
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Affiliation(s)
- H J Li
- From the Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangdong, China
| | - X Zhang
- From the Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangdong, China
| | - F Zhang
- From the Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangdong, China
| | - X H Wen
- From the Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangdong, China
| | - L J Lu
- From the Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangdong, China
| | - J Shen
- From the Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangdong, China.
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Song Y, Zhu LA, Wang SL, Leng L, Bucala R, Lu LJ. Multi-dimensional health assessment questionnaire in China: reliability, validity and clinical value in patients with rheumatoid arthritis. PLoS One 2014; 9:e97952. [PMID: 24848431 PMCID: PMC4029794 DOI: 10.1371/journal.pone.0097952] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 04/27/2014] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVE To evaluate the psychometric properties and clinical utility of Chinese Multidimensional Health Assessment Questionnaire (MDHAQ-C) in patients with rheumatoid arthritis (RA) in China. METHODS 162 RA patients were recruited in the evaluation process. The reliability of the questionnaire was tested by internal consistency and item analysis. Convergent validity was assessed by correlations of MDHAQ-C with Health Assessment Questionnaire (HAQ), the 36-item Short-Form Health Survey (SF-36) and the Hospital anxiety and depression scales (HAD). Discriminant validity was tested in groups of patients with varied disease activities and functional classes. To evaluate the clinical values, correlations were calculated between MDHAQ-C and indices of clinical relevance and disease activity. Agreement with the Disease Activity Score (DAS28) and Clinical Disease Activity Index (CDAI) was estimated. RESULTS The Cronbach's alpha was 0.944 in the Function scale (FN) and 0.768 in the scale of psychological status (PS). The item analysis indicated all the items of FN and PS are correlated at an acceptable level. MDHAQ-C correlated with the questionnaires significantly in most scales and scores of scales differed significantly in groups of different disease activity and functional status. MDHAQ-C has moderate to high correlation with most clinical indices and high correlation with a spearman coefficient of 0.701 for DAS 28 and 0.843 for CDAI. The overall agreement of categories was satisfying. CONCLUSION MDHAQ-C is a reliable, valid instrument for functional measurement and a feasible, informative quantitative index for busy clinical settings in Chinese RA patients.
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Affiliation(s)
- Yang Song
- Department of Rheumatology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Li-an Zhu
- Department of Medicine, Section of Rheumatology, Yale University School of Medicine, New Haven, Connecticut, United States of America
- * E-mail: (LJL); (LAZ)
| | - Su-li Wang
- Department of Rheumatology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Lin Leng
- Department of Medicine, Section of Rheumatology, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Richard Bucala
- Department of Medicine, Section of Rheumatology, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Liang-Jing Lu
- Department of Rheumatology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- * E-mail: (LJL); (LAZ)
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Wang FF, Zhu LA, Zou YQ, Zheng H, Wilson A, Yang CD, Shen N, Wallace DJ, Weisman MH, Chen SL, Lu LJ. New insights into the role and mechanism of macrophage migration inhibitory factor in steroid-resistant patients with systemic lupus erythematosus. Arthritis Res Ther 2012; 14:R103. [PMID: 22551315 PMCID: PMC3446480 DOI: 10.1186/ar3828] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 04/04/2012] [Accepted: 05/02/2012] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Glucocorticoid (GC) therapy remains important in improving the prognosis of patients with systemic lupus erythematosus (SLE). However, some patients do not achieve an effective response with GC treatment, creating an obstacle to the remission of SLE. Identification of the underlying mechanisms responsible for steroid resistance can be significant. Macrophage migration inhibitory factor (MIF) arouses our interest because of its reciprocal relationship with GCs. In the present study, we investigated for the first time whether MIF correlated with steroid resistance in SLE and explored potential mechanisms of action. METHODS Sixty-two patients with SLE (40 steroid sensitive and 22 steroid resistant) and 21 normal controls were recruited. Serum levels of MIF were measured by ELISA. Cytosolic MIF and IκB expression in peripheral blood mononuclear cells (PBMCs) were determined by western blotting. The electrophoretic mobility shift assay was assessed by NF-κB in nuclear aliquots. Gene silencing was applied to reduce expression of MIF in PBMCs in steroid-resistant patients. PBMCs obtained from steroid-sensitive patients were treated with recombinant human MIF of different concentrations. RESULTS MIF levels in serum and PBMCs were higher in steroid-resistant patients compared with steroid-sensitive patients and controls. In contrast to the steroid-sensitive group, NF-κB levels were significantly higher and IκB levels lower in steroid-resistant patients. After MIF gene silencing, IκB levels in cells from steroid-resistant patients were increased. In steroid-sensitive patients, a decrease in IκB levels and an increase in NF-κB expression from baseline were detected in PBMCs treated with a higher concentration of recombinant human MIF. Treatment with recombinant human MIF did not regulate expression of IκB and NF-κB in PBMCs from patients treated with an anti-MIF monoclonal antibody. CONCLUSIONS Our results indicated that MIF may play a role in the formation of steroid resistance in SLE by affecting the NF-κB/IκB signaling cascade. As a regulator of glucocorticoid sensitivity, MIF may be a potential target for steroid sparing.
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Affiliation(s)
- Fang-Fang Wang
- Department of Rheumatology, Renji Hospital, Shanghai Jiaotong University School of Medicine, 145 Middle Shan Dong Road, Shanghai 200001, China
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Gordon SM, Shah AS, Lu LJ, Deng J, Dolan LM, Urbina EM, Davidson WS. Abstract 445: Phospholipid Levels Associated with Specific High-Density Lipoprotein Subfractions Predict Cardiovascular Risk in Young Adults with Type 2 Diabetes. Arterioscler Thromb Vasc Biol 2012. [DOI: 10.1161/atvb.32.suppl_1.a445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Risk for atherosclerosis is greatly increased in people who have type 2 diabetes (T2D). Because of this, the emerging epidemic of adolescent T2D holds ominous implications for premature cardiovascular disease (CVD). High density lipoprotein cholesterol (HDL-C) represents the body’s natural defense against CVD but its levels are depressed in individuals with T2D. Recent studies indicate HDL exists as distinct subspecies raising the possibility that certain species may be more cardioprotective than others. However, little is known regarding the role of HDL subspecies in T2D, especially in the adolescent population. Thus we sought to evaluate HDL subspecies and determine whether certain subspecies are associated with protection against the development of early atherosclerosis as measured by carotid intima medial thickness (IMT). Healthy controls and youth with T2D were recruited. Whole plasma was analyzed by high-resolution gel filtration chromatography to resolve HDL sized particles and lipids in each fraction were quantitated by colorimetric assay. T-tests were used to evaluate group differences and linear regression models were constructed to determine independent predictors of carotid IMT. Youth with T2D had higher BMI, total cholesterol and lower HDL-C compared to healthy controls, p<0.05. The groups did not differ in LDL-C, triglycerides or BP. Phospholipid distributions of HDL subspecies were found to be shifted in participants with T2D compared to controls (p<0.05). There was a significant inverse correlation between carotid IMT and the phospholipid content of larger HDL subfractions 22-24 (p<0.05) in youth with T2D. Linear models demonstrate HDL fraction 22 was the only independent predictor of carotid IMT while HDL-C, LDL-C, total -C and triglycerides were not significant. These data suggest an altered HDL particle subclass distribution may better predict protection against early atherosclerosis. Thus analyzing the HDL subspecies may be a more powerful approach to assessing cardiovascular risk than the currently accepted standard of HDL-C.
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Affiliation(s)
- Scott M Gordon
- Pathology and Laboratory Medicine, Univ of Cincinnati, Cincinnati, OH
| | - Amy S Shah
- Endocrinology, Cincinnati Children’s Hosp, Cincinnati, OH
| | - L J Lu
- Biomedical Informatics, Cincinnati Children’s Hosp, Cincinnati, OH
| | - Jingyuan Deng
- Biomedical Informatics, Cincinnati Children’s Hosp, Cincinnati, OH
| | | | | | - W S Davidson
- Pathology and Laboratory Medicine, Univ of Cincinnati, Cincinnati, OH
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Lu LJ, Wallace DJ, Navarra SV, Weisman MH. Lupus Registries: Evolution and Challenges. Semin Arthritis Rheum 2010; 39:224-45. [DOI: 10.1016/j.semarthrit.2008.08.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2008] [Revised: 08/07/2008] [Accepted: 08/25/2008] [Indexed: 11/27/2022]
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Zhang CY, Lu LJ, Li FH, Li HL, Gu YY, Chen SL, Bao CD. Evaluation of Risk Factors That Contribute to High Prevalence of Premature Atherosclerosis in Chinese Premenopausal Systemic Lupus Erythematosus Patients. J Clin Rheumatol 2009; 15:111-6. [DOI: 10.1097/rhu.0b013e31819d8489] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Zou YQ, Lu LJ, Li SJ, Zeng T, Wang XD, Bao CD, Chen SL, Yang CD. The levels of macrophage migration inhibitory factor as an indicator of disease activity and severity in adult-onset Still's disease. Clin Biochem 2008; 41:519-24. [DOI: 10.1016/j.clinbiochem.2008.01.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2007] [Revised: 01/03/2008] [Accepted: 01/09/2008] [Indexed: 11/28/2022]
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25
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Tang WH, Yuan ST, Wang BS, Lu LJ, Ding J, Yuan ZR. Establishment of a subcutaneous model of the human extrahepatic bile duct carcinoma in nude mice via transplantation of histologically intact tumor tissue. J Exp Clin Cancer Res 2004; 23:661-7. [PMID: 15743037] [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: 05/02/2023]
Abstract
The purpose of the study was to establish the subcutaneous model of human extrahepatic bile duct carcinoma in nude mice so as to provide a suitable model for the study of extrahepatic bile duct carcinoma. Surgical specimens of the patient with extrahepatic bile duct carcinoma were transplanted into the subcutaneous layer of nude mice. Growth curve of transplanted tumors was drawn and its morphological and biological characteristics, as well as choromosome were observed. A well differentiated mucinous adenocarcinoma model of human bile duct carcinoma in nude mice, designated as HBDCM1-ZSH (Human Bile Duct Carcinoma Model No. 1 established by Zhong Shan Hospital in April, 2001), was established via subcutaneous transplantation of the surgically resected tumor from a 56-year-old Chinese man. HBDCM1-ZSH has been maintained for 13 passages and exhibited 98.1% transplantability. Mean latent periods were 26 days. Transplanted tumors exhibited the characteristics of the original tumor in morphology and biology. Chromosomal analysis revealed numerical abnormalities ranging from 67 to 84. HBDCM1-ZSH expressed carcinoembryonic antigen (CEA), carbohydrate antigen (CA)19-9, cytokeratin (CK7, CK19, CK20), PCNA, AB and PAS. In conclusion, HBDCM1-ZSH is similar to human extrahepatic bile duct carcinoma and provides an applicable animal model for research on extrahepatic bile duct carcinoma.
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Affiliation(s)
- W H Tang
- Dept. of General Surgery, Zhong Shan Hospital of Fudan University, Shanghai, China
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26
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Abstract
There is an increasing public interest in foods and dietary supplements containing phytoestrogens for the maintenance of health. A workshop was convened to assess evidence for the potential benefits of phytoestrogen-containing foods or supplements on diseases or conditions affecting older populations. Preclinical, clinical, and epidemiologic data on the cardiovascular system, various cancers, bone diseases, and menopausal symptoms were the focus of the discussions. Research on the basis of consumer food choices as well as a presentation from the FDA regarding approval of the use of soy foods to reduce the risk of cardiovascular disease were also presented. Based on the information presented, isoflavone-containing soy foods may have favorable effects on the cardiovascular system, but major knowledge gaps still exist regarding effects ofphytoestrogen supplements on bone diseases, various cancers, menopausal symptoms, and cognitive function.
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Affiliation(s)
- L J Lu
- Department of Preventive Medicine and Community Health, The University of Texas Medical Branch, Galveston 77555-1109, USA
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27
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Abstract
Soy intakes have been associated with reduced rates of breast cancer in some Asian populations. The isoflavones daidzein and genistein and other components of soybeans may modulate endocrine function and lead to beneficial health effects. This study determined the effects of a soy diet containing minimum amounts of isoflavones on circulating levels of ovarian hormones and gonadotropins. Nine healthy, regularly cycling women consumed a constant soya-containing diet on a metabolic unit starting on day 2 of a menstrual cycle until day 2 of the next cycle. The soy diet was calculated to maintain constant body weight and included a 36-oz portion of soymilk that provided 334 kilocalories and less than 5 mg/day of total isoflavones. The energy distribution of the soy diet was 35.9% fat, 14.0% protein, and 49.8% carbohydrate whereas the home diets averaged 39% fat, 16.6% protein, and 42.5% carbohydrate. For the group, the soya diet provided more carbohydrate (P = 0.002) and less protein (P = 0.005) than the home diets. Daily consumption of the soya diet reduced daily circulating levels of 17beta-estradiol over the entire menstrual cycle by 20% (P < 0.01, paired t test, two-tailed) and progesterone by 33% (P < 0.0001) compared with levels during the home diet period, but had no effect on LH, FSH, or sex hormone-binding globulin. The decreases in follicular phase 17beta-estradiol during the soy diet can be accounted for by changes in energy intakes, nutrient density, and fiber intake, whereas changes in luteal phase 17beta-estradiol were most strongly associated with differences in fiber intake. Changes in progesterone levels were most strongly associated with changes in protein intake and much less with other nutrients. Isoflavones were not detectable in plasma and urine during either the soy or home diet periods. These results suggest that at least under the conditions of this study, a soy diet with low levels of isoflavones and low energy intake from protein can reduce circulating ovarian steroids without altering gonadotropins. Our results are consistent with previous studies showing decreased ovarian hormone levels and decreased risk of breast cancer in populations consuming soya diets and an inverse relationship between animal protein intake and breast cancer risk and, therefore, may have implications for breast cancer prevention.
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Affiliation(s)
- L J Lu
- Departments of Preventive Medicine and Community Health, The University of Texas Medical Branch, Galveston, Texas 77555, USA.
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28
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Cao S, Hudnall SD, Kohen F, Lu LJ. Measurement of estrogen receptors in intact cells by flow cytometry. Cytometry 2000; 41:109-14. [PMID: 11002266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
BACKGROUND Estrogen receptor (ER) levels in tumor cells are important for determining the outcome of treatment and the prognosis of breast cancer patients. Flow cytometry is a convenient tool for quantifying the ER in cells, but a more sensitive, reproducible method for immunostaining the ER with anti-ER antibody is needed. Materials and Methods ER-positive human breast cancer cells MCF-7 and T47D, and ER-negative MDA-MBA-321 cells, were fixed and permeabilized by three different protocols. The cells were then stained by indirect immunofluorescence, using two commercial antibodies to ER (MA1-310 and DAKO 1D5), or by direct immunofluorescence using FITC-labeled anti-idiotypic antibody clone 1D(5). The stained cells were analyzed by flow cytometry. RESULTS The fixation of cells with a mixture of 0.25% paraformaldehyde and 70% methanol, permeabilization with 0.05% Triton X-100, and increasing antibody and antigen reaction time led to 80-99% of cells being stained with anti-ER antibodies. The relative brightness of ER immunostaining was as follows: anti-idiotypic antibody ID5 > MA1-310 > DAKO 1D5. CONCLUSIONS Direct immunofluorescence with the FITC-labeled anti-idiotypic antibody of permeabilized cells resulted in improved specific staining of the ER, as compared to indirect immunofluorescence with anti-ER antibodies of fixed and permeabilized cells. Increasing the length of staining, and treatment of cells with Triton X-100, are both necessary to improve the staining of intracellular antigen for flow cytometric analysis.
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Affiliation(s)
- S Cao
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston, Texas 77555-1110, USA
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29
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Lu LJ, Anderson KE, Grady JJ, Kohen F, Nagamani M. Decreased ovarian hormones during a soya diet: implications for breast cancer prevention. Cancer Res 2000; 60:4112-21. [PMID: 10945618] [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: 02/17/2023]
Abstract
Ovarian hormones are biomarkers for breast cancer risk. Soybean consumption may be responsible in part for lower levels of ovarian hormones and decreased rates of breast cancer in women in Asia compared with Western populations. Soybeans contain a significant amount of the isoflavones daidzein and genistein, which are weak estrogens. The purpose of this study was to determine whether soya feeding decreases circulating levels of ovarian hormones and gonadotropins. Ten healthy, regularly cycling women consumed a constant soya-containing diet on a metabolic unit, starting on day 2 of a menstrual cycle until day 2 of the next cycle. Blood and urine samples were obtained daily for one menstrual cycle before and during soy feeding. The diet was calculated to maintain constant body weight, included 400 kilocalories from a 36-ounce portion of soymilk, and provided 113-207 mg/day (154.0+/-8.4 mg/day, mean +/- SE) of total isoflavones. For the group, the soya diet provided more carbohydrate and less protein than the home diets. Daily consumption of the soya diet reduced circulating levels of 17beta-estradiol by 25% (P<0.01, Wilcoxon signed rank test, two-tailed) and of progesterone by 45% (P<0.0001) compared with levels during the home diet period but had no effect on luteinizing hormone or follicle-stimulating hormone. Mean menstrual cycle length did not change during the soya diet; a slight decrease in mean luteal cycle length was marginally statistically significant (P = 0.06). Urinary excretion of isoflavones was 33.8+/-5.3 mg/day (mean +/- SE) and when expressed as percentage of intake, varied substantially (21.9+/-3.3% of intake; range, 9.1-36.7%) among the subjects. Mean daily serum levels of daidzein and genistein (free and conjugated forms) 15 h after soymilk were 2.89+/-0.53 microg/ml and 0.85+/-0.22 microg/ml, respectively, indicating systemic bioavailability of these substances. Secondary analyses by multiple regression showed that decreases in follicular and luteal phase 17beta-estradiol levels were positively associated with urinary isoflavone excretion, an association affected by age, and were inversely associated with decreases in protein intake. Decreases in progesterone levels during the soya diet were inversely associated with increases in intakes of genistein and were affected by the interaction of the intakes of daidzein with energy or with fiber. Consumption of an isoflavone-containing soya diet reduced levels of ovarian steroids in normal women over the entire menstrual cycle without affecting gonadotropins. This suggests that at least under the conditions of this study, soya-induced reductions of circulating ovarian steroids are not mediated by gonadotropins. Decreases in ovarian hormones are related to isoflavones contained in soy and also to energy intake and other components such as protein and fiber but not fat. Our results may explain decreased ovarian hormone levels and decreased risk of breast cancer in populations consuming soya diets and have implications for reducing breast cancer risk by dietary intervention.
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Affiliation(s)
- L J Lu
- Department of Preventive Medicine, The University of Texas Medical Branch, Galveston 77555, USA.
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30
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Josyula S, Lu LJ, Salazar JJ, Nerurkar PV, Jones AB, Grady JJ, Snyderwine EG, Anderson LM. DNA adducts of 2-amino-3-methylimidazo[4,5-f]quinoline (IQ) in fetal tissues of patas monkeys after transplacental exposure. Toxicol Appl Pharmacol 2000; 166:151-60. [PMID: 10906279 DOI: 10.1006/taap.2000.8964] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Transplacental genotoxicity of the heterocyclic amine food-derived mutagen/carcinogen 2-amino-3-methylimidazo[4,5-f]quinoline (IQ) has been investigated by (32)P-postlabeling assay for IQ-DNA adducts in maternal liver, placenta, and several fetal tissues of patas monkeys, after exposure to 15, 35, or 50 mg/kg IQ near the end of gestation or to the highest dose in the first or second trimester. Dose-dependent adduct formation occurred in all tissues, with the highest levels occurring in maternal liver. Adduct amounts were similar among fetal tissues and placenta, except for lower levels in fetal brain and slightly more adducts in fetal liver. Adducts in placenta, fetal liver, lung, kidney, skin, and adrenal gland, but not in maternal liver or fetal brain, increased significantly as gestation progressed. Pretreatment with phenobarbital, which induces CYP enzymes that detoxify IQ, decreased adducts in maternal liver and possibly placenta, but not in fetal tissues. The CYP inducer beta-naphthoflavone caused a significant increase in IQ-DNA adducts in fetal lungs. Regression analysis suggested that IQ activation in maternal and fetal liver and possibly placenta contributed to adduct formation in fetal tissues; adducts in placenta and/or fetal liver were strong predictors for those in most fetal tissues. The results indicate that exposure of pregnant primates to IQ results in DNA adduct formation in most fetal tissues, especially late in gestation; that upregulation of maternal detoxification does not provide fetal protection; and that adducts in placenta indicate adduct levels in fetal tissues.
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Affiliation(s)
- S Josyula
- Department of Preventive Medicine and Community Health, The University of Texas Medical Branch, Galveston, Texas 77555-1110, USA
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31
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Wan XS, Lu LJ, Anderson KE, Ware JH, Kennedy AR. Urinary excretion of Bowman-Birk inhibitor in humans after soy consumption as determined by a monoclonal antibody-based immunoassay. Cancer Epidemiol Biomarkers Prev 2000; 9:741-7. [PMID: 10919746] [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: 02/17/2023] Open
Abstract
The Bowman-Birk inhibitor (BBI) found in soybeans is a serine protease inhibitor with anticarcinogenic activity. In the present study, an ELISA for BBI was developed with the use of a monoclonal antibody against a reduced form of BBI. This newly developed ELISA method was used to measure the urinary levels of BBI metabolites in nine human subjects after consumption of 36-oz or 60-oz soymilk (containing 105 or 175 mg of BBI) at two time points 36 h apart. The results demonstrate that urinary BBI excretion rates peaked within 6 h and decreased to baseline levels within 12-24 h after soymilk ingestion. The changes in BBI:creatinine ratios in urine closely paralleled the changes in urinary BBI excretion rates after soymilk consumption. These data suggest that BBI ingested p.o. is absorbed and could be bioavailable for cancer chemoprevention in other organs in addition to those in the gastrointestinal tract.
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Affiliation(s)
- X S Wan
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia 19104, USA.
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32
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Lu LJ, Cree M, Josyula S, Nagamani M, Grady JJ, Anderson KE. Increased urinary excretion of 2-hydroxyestrone but not 16alpha-hydroxyestrone in premenopausal women during a soya diet containing isoflavones. Cancer Res 2000; 60:1299-305. [PMID: 10728690] [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: 02/15/2023]
Abstract
Asian diets high in soy are associated with lower risk for breast cancer compared with Western diets. Moreover, higher levels of two putative carcinogenic metabolites of 17beta-estradiol, 4- and 16alpha-hydroxyestrogen, and lower amounts of anticarcinogenic metabolites, 2-hydroxyestrogens, have been associated with greater breast cancer risk. In this study, we tested the hypothesis that consumption of a soya diet containing the weakly estrogenic isoflavones genistein and daidzein may alter the metabolism of 17beta-estradiol to 2- and 16alpha-hydroxylated products. Eight pre-menopausal women were placed on a soya-containing, constant diet in a metabolic unit. The diet provided 400 kilocalories from soymilk and 113-202 mg/day (158 +/- 26 mg/day, mean +/- SD) isoflavones daily for a complete menstrual cycle. After a washout period of 4 months, the subjects consumed the same diet, but with soymilk that contained <4.5 mg/day isoflavones ("isoflavone-free"). Urine samples were collected for 24 h daily for the entire cycle during each soya diet period for the analysis of daidzein, genistein, and 2- and 16alpha-hydroxyestrone. Subjects excreted measurable amounts of daidzein (11.6-39.2 mg/day) and genistein (2.9-18.2 mg/day) during the isoflavone-rich soya diet but not during the isoflavone-free soya diet. The diet rich in isoflavones increased the cycle mean daily urinary excretion of 2-hydroxyestrone (averaged over the entire cycle) from 11.6 +/- 2.06 to 17.0 +/- 2.96 nmol/12-h (P = 0.03), a 47% increase. However, the mean daily excretion of 16alpha-hydroxyestrone did not change (7.0 +/- 1.14 nmol/12-h during the isoflavone-free and 7.7 +/- 1.25 nmol/12-h during the isoflavone-rich diet; P = 0.36). The ratio of 2-hydroxyestrone to 16alpha-hydroxyestrone was higher during the isoflavone-rich soya diet (2.6 +/- 0.34) than during the isoflavone-free diet (2.0 +/- 0.32; P = 0.01), a 27% increase. These results suggest that soya isoflavones increase the metabolism of endogenous estrogens to the protective 2-hydroxylated estrogens in women, and this may play an important role in lowering 17beta-estradiol levels and the long-term risk for breast cancer.
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Affiliation(s)
- L J Lu
- Department of Preventive Medicine and Community Health, The University of Texas Medical Branch, Galveston 77555-1110, USA.
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Zhang JS, Ding J, Tang QM, Li M, Zhao M, Lu LJ, Chen LJ, Yuan ST. Synthesis and antitumour activity of novel diterpenequinone salvicine and the analogs. Bioorg Med Chem Lett 1999; 9:2731-6. [PMID: 10509925 DOI: 10.1016/s0960-894x(99)00472-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.6] [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: 11/23/2022]
Abstract
A novel diterpenequinone named salvicine (4), structurally modified derivative of a natural product, and a series of the novel analogs have been prepared. Most of the analogs were found to be potently active against tumor cell lines in vitro. Further study on 4 in vivo demonstrated that it possessed a significant antineoplastic activity against murine S-180 Sarcoma and Lewis lung cancer, and human lung adenocarcinoma xenografts A-549 and LAX-83. The preclinical studies of 4 are now under way.
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Affiliation(s)
- J S Zhang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, People's Republic of China.
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Abstract
Phytoestrogenic isoflavones that are abundant in soybeans may be an important group of natural products that could play a critical role in preventing several chronic human diseases. To facilitate studying the relationship of soya exposure and chronic diseases, we report a simple method for measuring an isoflavone, genistein, in human urine and plasma. The method is a competitive enzyme-linked immunoassay that utilizes a conjugate of horseradish peroxidase (HRP) and genistein as tracer and a monoclonal antibody to genistein (clone 10D8) generated through the 6-position of genistein. Genistein, in diluted hydrolyzed urine or plasma of subjects who ingested soy milk, competes with HRP-genistein conjugate for the binding sites of anti-genistein antibody on rabbit anti-mouse IgG-coated plates. After a one-hour incubation, the wall-bound genistein-HRP activity, after reaction with a chromogen, is measured colorimetrically at 450 nm and is inversely correlated with concentrations of genistein over the range of 0.1-32 ng/well. The sensitivity limit of the method is 0.5 ng of genistein per well or 0.5 ng per 10 microliters of urine and plasma. Urine and plasma levels of genistein measured by this immunoassay correlated well (R2 = 0.92 for urine and 0.77 for plasma) with those determined by chromatographic techniques. This method can be used to assess soya exposure in humans and could facilitate epidemiological studies of the relationship of soya diets and chronic diseases, including cancer.
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Affiliation(s)
- F Kohen
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
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35
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Abstract
Soybean consumption may be protective against hormone-dependent cancers, possibly in part because of the isoflavones daidzein and genistein, which are weakly estrogenic. This paper reviews our studies of the metabolism and disposition of these phytoestrogens in humans. During 1 mo of daily soy ingestion in a metabolic unit [1.065 L (36 oz) soymilk, providing 80-210 mg of each isoflavone daily], women initially excreted more isoflavone conjugates in urine than did men. Recoveries of conjugates of genistein, daidzein, and equol were 24%, 66%, and 28% of the amounts ingested in women, respectively, and 15%, 47%, and 15%, respectively, of those in men. A progressive decrease in urinary excretion of genistein and daidzein was observed in women but not in men during the study. At least 10% of ingested daidzin was excreted in urine as equol conjugate in one man and one woman after the first soy ingestion. Three more women but no more men developed the ability to produce and excrete large amounts of equol. Absorption rate constants (k(e)) of the isoflavones were estimated to be 0.24-0.50 h(-1). The elimination rates (k(e)) for genistein, daidzein, and equol were 0.1, 0.16, and 0.08 h(-1), respectively, in women and 0.19, 0.25, and 0.13 h(-1), respectively, in men. Thus, the excretion half-life values of genistein were longer in women (7, 4, and 9 h, respectively) than in men (4, 3, and 5 h, respectively) after the first soy ingestion. The excretion half-life shortened progressively in women but lengthened progressively in men over the study period. Thus, isoflavone metabolism and disposition were affected by the duration of soy ingestion and by sex.
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Affiliation(s)
- L J Lu
- Department of Preventive Medicine and Community Health, The University of Texas Medical Branch, Galveston 77555-1110, USA.
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36
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Kohen F, Lichter S, Gayer B, DeBoever J, Lu LJ. The measurement of the isoflavone daidzein by time resolved fluorescent immunoassay: a method for assessment of dietary soya exposure. J Steroid Biochem Mol Biol 1998; 64:217-22. [PMID: 9605417 DOI: 10.1016/s0960-0760(97)00156-8] [Citation(s) in RCA: 24] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We report a novel method for the measurement of urinary daidzein that is suitable for assessment of dietary soya exposure. The method incorporates the following features: (i) a highly specific monoclonal antibody to daidzein (clone 4E4) raised through the 7 position of daidzein and (ii) a europium labeled ovalbumin daidzein conjugate. In the present format, dilute urine samples of subjects who ingested soy milk are hydrolyzed with beta-glucuronidase for 30 min on rabbit anti-mouse coated plates. Afterwards, the specific monoclonal antibody to daidzein, clone 4E4, and europium labeled ovalbumin daidzein conjugate are added. After 1 h incubation, the wall bound fluorescence of europium is measured by time resolved fluorescence and is inversely proportional to the concentration of daidzein over the range 0.1-10 ng daidzein/well. The method demonstrates good sensitivity, precision and comparability with the chemical method GC-FID. Unlike the chemical method, the present immunoassay technique for daidzein is applicable for the measurement of large amounts of samples in epidemiological studies for the assessment and monitoring of human exposure to soya food.
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Affiliation(s)
- F Kohen
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot, Israel.
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Lu LJ. Prefocusing optics for soft-x-ray synchrotron-radiation monochromators. Appl Opt 1996; 35:3627-3634. [PMID: 21102757 DOI: 10.1364/ao.35.003627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We present a mirror system to be used for the prefocusing optics of soft-x-ray monochromators using synchrotron radiation from a bending magnet source. The system consists of a cylindrical and a toroidal mirror arranged coplanarly. It can be made, by proper selection of the curvature radii of the mirrors, free of astigmatic coma. The design method is described in detail; the system is evaluated by exact ray-tracing calculations. Also given is a design example of the prefocusing optics in a soft-x-ray synchrotron radiation be aniline.
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Zhang SY, Zhu J, Chen GQ, Du XX, Lu LJ, Zhang Z, Zhong HJ, Chen HR, Wang ZY, Berger R, Lanotte M, Waxman S, Chen Z, Chen SJ. Establishment of a human acute promyelocytic leukemia-ascites model in SCID mice. Blood 1996; 87:3404-9. [PMID: 8605358] [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: 01/31/2023] Open
Abstract
Acute promyelocytic leukemia (APL) is an interesting model for cancer research because of the presence of the specific PML-RARalpha fusion gene associated with the clinical response to retinoic acid differentiation therapy. To better understand and improve differentiation induction with retinoic acid, we have established a human APL-ascites model in SCID mice using the NB4 human APL cell line. NB4 (1 x 10(6) cells) were transplanted into the peritoneum (IP) of SCID mice for 1 month. NB4 ascites cells (A-NB4) appeared, which were then engrafted in SCID mice periodically for 18 passages at an interval of 3 to 4 weeks with a 100% success rate of tumor induction. The mean survival times of SCID mice transplanted with 1 x 10(6) A-NB4 cells was 21.6 +/- 2.3 days. Analysis of the biologic characteristics of ninth passage NB4 ascitic cells was performed and they were found to have the morphologic, immunologic, cytogenetic, and molecular features of cultured NB4 cells. Furthermore, A-NB4 cells were capable of differentiating when treated with all-trans retinoic acid (ATRA), as manifested by enhanced NBT reduction and CD11b expression. In vivo treatment with ATRA in SCID mice for 4 days also increased NBT reduction by A-NB4 cells. ATRA treatment significantly prolonged survival time in the group after transplantation (28.1 +/- 6.8 to 29.1 +/- 8.4 days) compared with the control (P < .001). Furthermore, treatment with adriamycin, an effective chemotherapeutic drug in APL, had a strong growth suppressive effect on A-NB4 cells. These results demonstrate that this SCID-APL (NB4 ascites cells) model is a useful preclinical system for evaluating new or known drugs in the treatment of APL.
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Affiliation(s)
- S Y Zhang
- Shangai Institute of Materia Medica, Rui-Jin Hospital, China
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39
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Lu LJ, Anderson KE, Grady JJ, Nagamani M. Effects of soya consumption for one month on steroid hormones in premenopausal women: implications for breast cancer risk reduction. Cancer Epidemiol Biomarkers Prev 1996; 5:63-70. [PMID: 8770469] [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: 02/02/2023] Open
Abstract
Soybean consumption is associated with reduced rates of breast, prostate, and colon cancer, which is possibly related to the presence of isoflavones that are weakly estrogenic and anticarcinogenic. We examined the effects of soya consumption on circulating steroid hormones in six healthy females 22-29 years of age. Starting within 6 days after the onset of menses, the subjects ingested a 12-oz portion of soymilk with each of three meals daily for 1 month on a metabolic unit. Daily isoflavone intakes were approximately 100 mg of daidzein (mostly as daidzin) and approximately 100 mg of genistein (mostly as genistin). Serum 17 beta-estradiol levels on cycle days 5-7, 12-14, and 20-22 decreased by 31% (P = 0.09), 81% (P = 0.03), and 49% (P = 0.02), respectively, during soya feeding. Decreases persisted for two or three menstrual cycles after withdrawal from soya feeding. The luteal phase progesterone levels decreased by 35% during soya feeding (P = 0.002). Dehydroepiandrosterone sulfate levels decreased progressively during soya feeding by 14-30% (P = 0.03). Menstrual cycle length was 28.3 +/- 1.9 days before soymilk feeding, increased to 31.8 +/- 5.1 days during the month of soymilk feeding (P = 0.06), remained increased at 32.7 +/- 8.4 days (P = 0.11) at one cycle after termination of soymilk feeding, and returned to pre-soya diet levels five to six cycles later. These results suggest that consumption of soya diets containing phytoestrogens may reduce circulating ovarian steroids and adrenal androgens and increase menstrual cycle length. Such effects may account at least in part for the decreased risk of breast cancer that has been associated with legume consumption.
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Affiliation(s)
- L J Lu
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston, TE 77555, USA
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40
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Lu LJ, Lin SN, Grady JJ, Nagamani M, Anderson KE. Altered kinetics and extent of urinary daidzein and genistein excretion in women during chronic soya exposure. Nutr Cancer 1996; 26:289-302. [PMID: 8910911 DOI: 10.1080/01635589609514485] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Soybean consumption may be protective for breast cancer, possibly due in part to the presence of the isoflavones daidzein and genistein, which are weakly estrogenic. The metabolism and disposition of these phytoestrogens during chronic soya exposure were studied on a metabolic unit. Six healthy 22- to 29-year-old women consumed an unrestricted hospital diet for most of the study and ingested 12 oz of soymilk with each meal for one month. At two-week intervals, excretion of isoflavones in urine was studied, during which time the subjects consumed a constant basal diet for three to four days, ingested the full daily 36-oz portion of soymilk within 30 minutes each day for one to two days, and collected urine continuously. Urinary recovery of genistein [initially 23.9 +/- 17.3% (SD) of ingested genistin + genistein], daidzein (initially 66.2 +/- 23.5% of ingested daidzin + daidzein), and equol (initially 28% of the ingested precursors daidzin + daidzein in 1 subject and < 1% in 5 subjects) decreased progressively over four weeks of daily soya ingestion by 42% for genistein (p < 0.05) and 31% for daidzein (p < 0.01) but increased by 3- to 100-fold for equol (4 subjects, p < 0.05). Total amounts excreted and peak levels were similarly affected. The absorption half-lives (t 1/2) for genistein and daidzein were initially 2.7 +/- 0.8 and 1.6 +/- 0.5 hours, respectively, and during four weeks of soymilk ingestion decreased to 2.0 +/- 0.6 (p = 0.04) and 1.4 +/- 0.2 hours (p = 0.06), respectively, suggesting more rapid absorption. The appearance t 1/2 of equol can be estimated for only one subject initially (2.9 hrs), but during four weeks of soya ingestion it could be estimated for three more subjects (4.7 +/- 2.3 hrs). The excretion t 1/2 values for genistein and daidzein were initially 6.7 +/- 0.8 and 4.4 +/- 0.7 hours, respectively, and during four weeks of soymilk ingestion decreased to 4.2 +/- 1.2 (p = 0.005) and 3.2 +/- 1.1 hours (p = 0.005), respectively, suggesting more rapid excretion. For equol, the excretion t 1/2 was initially 9.1 hours (1 subject), and after two and four weeks of soymilk ingestion it was 13.4 +/- 9.7 and 5.5 +/- 1.6 hours (4 subjects, p = 0.046, 2 wks vs. 4 wks), respectively. These results indicate that metabolism and disposition of ingested isoflavones are altered during chronic soya ingestion in women, perhaps from increased metabolic degradation to formation of nonisoflavone metabolites. Increased production of the longer- and stronger-acting estrogenic equol in some women during chronic soymilk ingestion may alter the estrogenic potency of dietary soya isoflavones.
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Affiliation(s)
- L J Lu
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston 77555-1110, USA.
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41
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Abstract
I show analytically and numerically how to use a varied line-space grating to reduce coma aberration in a soft-x-ray synchrotron radiation monochromator: a plane grating in combination with one or more spherical mirrors arranged in front of the grating and rotated around a fixed axis outside the mirror surface. It seems that the variation extent of groove spacing is too small to be manufactured; thus, a holographic grating of equivalent imaging properties is proposed. Based on the analysis of a focusing equation, I found that, if the plane grating is replaced by a spherical one, the monochromator can also be made free of defocus.
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42
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Lu LJ, Kurup VP, Hoffman DR, Kelly KJ, Murali PS, Fink JN. Characterization of a major latex allergen associated with hypersensitivity in spina bifida patients. J Immunol 1995; 155:2721-8. [PMID: 7650400] [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: 01/26/2023]
Abstract
Hypersensitivity to latex proteins present in health care products, particularly in latex gloves, has emerged as an important public health problem in recent years. Most of these latex allergens have not been purified or characterized. Here we report the purification and characterization of a 23-kDa latex polypeptide from nonammoniated natural rubber latex. This purified 23-kDa polypeptide reacted with IgE from 13 of 17 (76%) latex-allergic spina bifida patients, but from only 1 of 5 health care workers with latex allergy. Furthermore, all the sera of patients with anaphylaxis to latex showed reactivity with the 23-kDa polypeptide. This allergen also induced significant lymphocyte proliferation by PBMC from spina bifida patients, but not from health care workers. The 90 amino acid residues sequenced from the 23-kDa polypeptide showed a 45.6% homology with a previously reported latex protein, rubber elongation factor. By using a mAb LAM-1, produced against the 23-kDa allergen, we could also detect this allergen or its epitope in ammoniated latex and natural rubber latex products used in health care management, but not in non-latex extracts studied.
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Affiliation(s)
- L J Lu
- Department of Medicine, Medical College of Wisconsin, Milwaukee 53295, USA
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43
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Lu LJ, Kurup VP, Hoffman DR, Kelly KJ, Murali PS, Fink JN. Characterization of a major latex allergen associated with hypersensitivity in spina bifida patients. The Journal of Immunology 1995. [DOI: 10.4049/jimmunol.155.5.2721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
Hypersensitivity to latex proteins present in health care products, particularly in latex gloves, has emerged as an important public health problem in recent years. Most of these latex allergens have not been purified or characterized. Here we report the purification and characterization of a 23-kDa latex polypeptide from nonammoniated natural rubber latex. This purified 23-kDa polypeptide reacted with IgE from 13 of 17 (76%) latex-allergic spina bifida patients, but from only 1 of 5 health care workers with latex allergy. Furthermore, all the sera of patients with anaphylaxis to latex showed reactivity with the 23-kDa polypeptide. This allergen also induced significant lymphocyte proliferation by PBMC from spina bifida patients, but not from health care workers. The 90 amino acid residues sequenced from the 23-kDa polypeptide showed a 45.6% homology with a previously reported latex protein, rubber elongation factor. By using a mAb LAM-1, produced against the 23-kDa allergen, we could also detect this allergen or its epitope in ammoniated latex and natural rubber latex products used in health care management, but not in non-latex extracts studied.
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Affiliation(s)
- L J Lu
- Department of Medicine, Medical College of Wisconsin, Milwaukee 53295, USA
| | - V P Kurup
- Department of Medicine, Medical College of Wisconsin, Milwaukee 53295, USA
| | - D R Hoffman
- Department of Medicine, Medical College of Wisconsin, Milwaukee 53295, USA
| | - K J Kelly
- Department of Medicine, Medical College of Wisconsin, Milwaukee 53295, USA
| | - P S Murali
- Department of Medicine, Medical College of Wisconsin, Milwaukee 53295, USA
| | - J N Fink
- Department of Medicine, Medical College of Wisconsin, Milwaukee 53295, USA
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44
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Giri AK, Lu LJ. Genetic damage and the inhibition of 7,12-dimethylbenz[a]anthracene-induced genetic damage by the phytoestrogens, genistein and daidzein, in female ICR mice. Cancer Lett 1995; 95:125-33. [PMID: 7656220 DOI: 10.1016/0304-3835(95)03877-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Populations consuming soybeans have reduced rates of breast, colon and prostate cancer possibly due, in part, to the presence in soybeans of two estrogenic isoflavones, genistein and daidzein. This study investigated the genotoxicity of these soya isoflavones and their interactions with 7,12-dimethylbenz[a]anthracene (DMBA)-induced sister chromatid exchanges (SCE) in bone marrow cells and DNA adduct formations in liver and mammary glands of mice. Groups of female ICR mice were pretreated i.p. with daidzein and/or genistein (10-20 mg/kg per day for 6 days or 50 mg/kg per 12 h for 3 days) or with the solvent, dimethylsulfoxide (DMSO). The mice were implanted with bromodeoxyuridine (BrdU) tablets s.c., and treated with DMBA (50 mg/kg) i.p. and colchicine (4 mg/kg) i.p. 24, 23, and 2 h before sacrifice, respectively. In bone marrow cells. DMBA alone induced 11.73 +/- 1.42 SCE/cell compared to 4.35 +/- 0.83 SCE/cell in the DMSO treated controls (P = 0.001). DMBA induced 20% fewer SCE (P < 0.05) in mice pretreated with daidzein, genistein or a combination of genistein and daidzein (6 x 20 mg/kg per day for 6 days) when compared to mice that received no pretreatments. Genistein at 50 mg/kg per 12 h for 3 days also inhibited DMBA-induced SCE by 20%. However, treatment for 3 days with 50 mg/kg per 12 h of genistein or daidzein alone, or a combination of daidzein plus genistein (without DMBA treatment) also induced more SCE than treatment with only the solvent (DMSO, P < 0.05). Pretreatment with both the low and the high doses of daidzein plus genistein or the high dose of genistein reduced the replication index of bone marrow cells when compared to pretreatment with DMSO (P < 0.05). Pretreatment with genistein reduced DMBA-induced DNA adduct formation by 34%, but this was only marginally significant (P = 0.08) due to the large inter-individual variability in adduct levels. These results show that genistein and daidzein suppress SCE and possibly DNA adduct formation induced by the known carcinogen, DMBA. This response to a low dose isoflavone exposure may be partly responsible for the protective effect against endocrine cancers of soya consumption.
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Affiliation(s)
- A K Giri
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston 77555-1110, USA
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45
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Lu LJ, Kurup VP, Fink JN, Kelly KJ. Comparison of latex antigens from surgical gloves, ammoniated and nonammoniated latex: effect of ammonia treatment on natural rubber latex proteins. J Lab Clin Med 1995; 126:161-168. [PMID: 7636389] [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: 05/21/2023]
Abstract
Immediate hypersensitivity to latex proteins from contact with natural rubber latex gloves has been increasingly reported, especially in health care workers. Proteins in the latex responsible for these reactions may potentially be extractable, adsorbed on glove powder, or remain unextractable. Because these gloves are manufactured from ammoniated natural rubber latex, our knowledge on the effect of ammonia on latex proteins is incomplete. Therefore, we have investigated the effect of ammoniation on the protein profile and antigenicity or allergenicity of natural rubber latex proteins (NAL). Results indicate that ammonia treatment leads to breakdown and even precipitation of certain latex proteins. However, the antigenicity or allergenicity of NAL is preserved in the degraded proteins that present as extractable latex antigens of gloves. In addition to the proteins present in glove extract and proteins adsorbed to glove powder, certain latex proteins (23, 10, and 8 kd) remain firmly bound to glove film as "unextractable" latex antigens that cannot be removed by washing. The unextractable latex antigens may represent the antigens precipitated by ammonia treatment and may be associated with latex allergy.
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Affiliation(s)
- L J Lu
- Department of Medicine, Medical College of Wisconsin, Milwaukee, USA
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46
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Lu LJ, Broemeling LD, Marshall MV, Ramanujam VM. A simplified method to quantify isoflavones in commercial soybean diets and human urine after legume consumption. Cancer Epidemiol Biomarkers Prev 1995; 4:497-503. [PMID: 7549805] [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: 01/25/2023] Open
Abstract
Reliable and economical quantification of micronutrients in diets and human is a critical component of successful epidemiological studies to establish relationships between dietary constituents and chronic disease. Legumes are one of the major dietary components consumed by populations worldwide. Consumption of legumes is thought to play a major role in lowering breast and prostate cancer risk. In this study, a simplified method that uses solid-phase extraction and gas chromatography was developed to measure isoflavones at levels down to 10 micrograms/5ml. With the use of this method, 12.5 g miso (a soybean paste), 12 ounces Isomil, and 12 ounces soymilk had daidzin/daidzein levels of 2, 5, and 12.4 mg, respectively, and genistin/genistein levels of 3, 6.5, and 13.7 mg, respectively. In these products, most of the isoflavones were present as glucosides. With the same method, urinary levels of isoflavones in six 15-17-year-old subjects were determined after soymilk ingestion. Each subject was placed on unrestricted nonsoya diets, and three 12-ounce portions of soymilk were given at 12-h intervals. Males excreted 15.02 +/- 2.74 (SD) mg of daidzein glucuronides/sulfates [mean recovery, 40.4 +/- 7.4% (SD)] by 24 h after the third soymilk ingestion, whereas females excreted 25.56 +/- 5.10 mg (68.7 +/- 13.7%) of daidzein conjugates, which was more than males (P = 0.02). Males and females excreted 7.73 +/- 1.95 mg and 9.11 +/- 0.84 mg of genistein glucuronides/sulfates (20% recovery of genistin intake), respectively, in the urine. Most of the isoflavones were excreted within 24 h after ingestion.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- L J Lu
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston 77555, USA
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47
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Abstract
Spina bifida patients have been shown to be a high-risk group for latex allergy. Of the several latex proteins identified from nonammoniated natural latex, a polypeptide with a molecular mass of about 23 kDa was shown to be one of the major allergens reacting with IgE in the sera from such patients. Using hybridoma technology, a monoclonal antibody (mAb) 1E2 against the 23-kDa latex allergen was produced. The presence of the 23-kDa or related allergens in finished latex products was evaluated using 1E2. Of the 16 extracts of finished latex products, 12 reacted with 1E2. The other four products are not used in health care. Since the majority of latex products used in health care are manufactured from ammoniated latex and ammoniation may alter latex proteins, we also investigated the effect of ammoniation on the 23-kDa allergen. Although ammoniation degraded latex proteins, the 23-kDa antigen could still be detected by using mAb 1E2 on immunoblot of ammoniated latex proteins. Furthermore, ammoniation resulted in the appearance of additional proteins in high molecular weight positions not present in nonammoniated natural latex, which retained the 23-kDa epitope. The 23-kDa allergen could also be detected on surgical gloves after extensive washing.
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Affiliation(s)
- L J Lu
- Department of Medicine, Medical College of Wisconsin, Milwaukee, USA
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48
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Lu LJ, Anderson KE, Gomez G, Nealon WH. Decreased plasma levels of cholecystokinin in healthy males after chronic ingestion of a heat-treated soya product. Cancer Lett 1995; 90:149-55. [PMID: 7736450 DOI: 10.1016/0304-3835(95)03697-u] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Administration of raw soya containing a trypsin inhibitor stimulated excessive release of cholecystokinin (CCK) which led to pancreatic hypertrophy, hyperplasia and cancer in the rats (Booth et al. (1964) Proc. Soc. Exp. Biol. Med., 116, 1067). More postprandial CCK release in healthy humans was observed after ingestion of a single dose of raw soya than heat-treated soya (Calam et al. (1989) Br. J. Nutr., 58, 175). The effect of chronic ingestion of a heat-treated soya product on postprandial CCK release was investigated in six healthy adult males after ingestion of a 36-oz. portion of soymilk daily for 1 month and at 2-3 months after termination of soymilk ingestion. Subjects fasted for 15 h, ingested Lipomul (1.5 g/kg) and provided blood at timed intervals for CCK analysis. The results show that 1-month ingestion of soymilk decreased the magnitude of Lipomul-induced postprandial CCK release in plasma of all six subjects by 5-60% (P < 0.05) compared to those obtained at 2-3 months after the withdrawal from soymilk ingestion. Plasma pancreatic polypeptide (PP) levels were similarly decreased in five of the six subjects by 19-67% (P = 0.03) in line with the regulation of PP by CCK. Thus, prolonged exposure of humans to a heat-treated soya inhibited slightly meal-induced CCK release in contrast to that found in rats after raw soya diets.
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Affiliation(s)
- L J Lu
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston 77555, USA
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49
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Lu LJ, Grady JJ, Marshall MV, Ramanujam VM, Anderson KE. Altered time course of urinary daidzein and genistein excretion during chronic soya diet in healthy male subjects. Nutr Cancer 1995; 24:311-23. [PMID: 8610050 DOI: 10.1080/01635589509514420] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.9] [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: 01/31/2023]
Abstract
Soybean consumption is associated with reduced rates of prostate and other cancers, possibly due in part to the presence of isoflavones. The metabolism and disposition of these soya-derived phytoestrogens after chronic soya exposure were studied on a metabolic unit in six healthy males (21-35 yrs of age) who consumed an unrestricted hospital diet and a 12-oz portion of soymilk with each meal for one month. The daily isoflavone intake was about 100 mg of daidzein (mostly as diadzin) and about 100 of mg of genistein (mostly as genistin). At two-week intervals, excretion of isoflavones in urine was studied, during which time the subjects consumed a constant basal diet for three to four days, ingested the full daily 36-oz portion of soymilk within 30 minutes each day for one to two days, and collected urine continuously. The urinary recovery of ingested diadzin plus daidzein (46.9 +/- 15.2%, mean +/- SD) and genistin plus genistein (14.6 +/- 9.2%) did not change with prolonged soya ingestion. The absorption half-lives (t1/2) for daidzein and genistein and the appearance t1/2 for equol (1 subject) were initially 1.5 +/- 0.4, 1.9 +/- 0.6, and 2.2 hours, respectively, and 2.5 +/- 1.1 (p = 0.06 compared with baseline) 1.4 +/- 0.9 (p = 0.03) compared with baseline), and 4.2 hours, respectively, during one month of soymilk ingestion. The excretion t1/2 for daidzein, genistein, and equol were initially 2.9 +/- 0.5, 3.8 +/- 0.7, and 5.2 hours, respectively, and 3.9 +/- 1.2 (p - 0.03), 5.5 +/- 1.6 (p = 0.02), and 9.7 hours, respectively, during one month of soymilk ingestion. These results indicate that chronic soya exposure did not induce significant changes in the metabolic pathways of isoflavones but altered the time courses of daidzein and genistein excretion. Thus chronic exposure to soya might prolong the tissue exposure to the presumed biologically active free and unconjugated forms of these isoflavones and thereby enhance their oncoprotective effects.
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Affiliation(s)
- L J Lu
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston 77555, USA
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50
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Wang LM, Wan WH, Lu LJ. [A bispecific monoclonal antibody with versatile adaptor mediating different cytotoxicities]. Zhonghua Zhong Liu Za Zhi 1994; 16:83-7. [PMID: 7924869] [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: 01/27/2023]
Abstract
Bispecific monoclonal antibody (bsMAb), secreted by hybrid-hybridoma, has an intact 1g molecule construction with dual antigen binding specificities. bsMAb has several advantages over conventional conjugate in tumor targeting therapy: (1) The damage to both antibody and tumoricidal agents due to chemical crosslinking can be avoided. (2) The antigen modulation can be decreased due to monovalence binding of bsMAb with target antigen. (3) The binding affinity between Fc fragment of bsMAb with heterogenous heavy chains and Fc receptor is decreased, so that nonspecific distribution and side effects can be reduced. (4) The bsMAb can pretarget to tumor site, increasing the T/NT ratio and cytotoxicity. In the present study, A bsMAb with versatile adaptor was designed. In this bsMAb, one arm could react with gastric cancer-associated antigen, and the other with a hapten TNP. The bsMAb could mediate different tumoricidal agents crosslinked to TNP. A variant hybridoma 3H11-HAT(s) secreting McAb against gastric cancer was fused with spleen cells of mice immunized with KLH-TNP. After screening and subcloning, 10 hybrid-hybridomas were obtained, which secreted antibodies against both gastric cancer target cells BGC823 and BSA-TNP. By using special bridge method, only hybrid-hybridomas 6A3 (gamma 2b, mu), and 1G7 (gamma 2b, gamma 2b) were confirmed to secrete bsMAb. Further experiments showed that the bsMAb 6A3 and 1G7 could mediate different cytotoxicities, for example, Ricin-TNP, MMC-HSA-TNP and ADM-BSA-TNP. This system is useful for evaluating different tumoricidal agents in bsMAb targeting therapy, and has potential value in clinics.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- L M Wang
- Department of Biochemistry, Beijing Institute for Cancer Research
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