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Jiang Y, Dong L, Pan YQ, Zhao J, Li WF, Zhang TF, Zhang T, Dai DW. Efficacy of neuroendoscopic-assisted surgery in the management of symptomatic sacral perineural (Tarlov) cysts: a technical report. Front Surg 2024; 11:1307460. [PMID: 38486796 PMCID: PMC10937351 DOI: 10.3389/fsurg.2024.1307460] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 02/12/2024] [Indexed: 03/17/2024] Open
Abstract
Introduction The Tarlov cysts are pathological enlargements of the cerebrospinal fluid spaces between the endoneurium and perineurium, which can cause intolerable sciatic pain, motor impairment of lower limbs, and bladder/bowel dysfunction. Currently, the treatment results are unsatisfactory due to the low cure rates and extensive surgical trauma. Thus, there is an ongoing exploration of surgical techniques for Tarlov treatment. In the current study, we present a novel neuroendoscopic-assisted technique that combines the fenestration, leakage sealing, and tamponade of the Tarlov cyst. Methods Between January 2020 and December 2021, a total of 32 Tarlov patients were enrolled and received neuroendoscopic-assisted surgery. Their pre- and post-surgical Visual Analogue Scale (VAS) scores, major complaints, and MR imaging were recorded for comparison. Results 27 of 32 patients (84.4%) patients demonstrated immediate pain relief as their VAS scores decreased from 5.6 ± 1.5 to 2.5 ± 1.1 (p < 0.01) on the first day after surgery. At the 3-month follow-up, the patients' average VAS score continued to decrease (1.94 ± 0.8). Meanwhile, saddle paresthesia, urinary incontinence, and constipation were relieved in 6 (50%), 4 (80%), and 5 (41.7%), respectively, according to patients self-report. No surgical-related complication was observed in any of the cases. Discussion We conclude that neuroendoscopic-assisted surgery is an effective surgical method for symptomatic Tarlov cysts with minimized complications.
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Affiliation(s)
- Ying Jiang
- Cerebrovascular Diseases Center, Department of Neurosurgery, Renji Hospital, Shanghai, China
| | - Lan Dong
- Department of Emergency, Shanghai Chang Zheng Hospital, Shanghai, China
| | - Yi-Qi Pan
- Department of Otorhinolaryngology, Shanghai Jiao-Tong University School of Medicine Ruijin Hospital, Shanghai, China
| | - Jun Zhao
- Department of Neurosurgery, Shanghai University of Medicine & Health Science Affiliated Zhoupu Hospital, Shanghai, China
| | - Wen-Fang Li
- Department of Emergency, Shanghai Chang Zheng Hospital, Shanghai, China
| | - Teng-Fei Zhang
- Department of Emergency, Shanghai Chang Zheng Hospital, Shanghai, China
| | - Ting Zhang
- Department of Emergency, Shanghai Chang Zheng Hospital, Shanghai, China
| | - Da-Wei Dai
- Department of Neurosurgery, Renji Hospital, Shanghai, China
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Dai DW, Wang GM, Zhang TF, Wang CH, Gulberdiyev A, Qiu YM, Han S. Syringo-Subarachnoid Shunt with Tube Versus T-Tube via the Dorsal Root Entry Zone Approach for Eccentric Syringomyelia. World Neurosurg 2024:S1878-8750(24)00237-7. [PMID: 38360206 DOI: 10.1016/j.wneu.2024.02.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 02/06/2024] [Indexed: 02/17/2024]
Abstract
OBJECTIVE This study compared the clinical therapeutic efficacy of syringo-subarachnoid shunt placement with direct tube and T-tube via the dorsal root entry zone (DREZ) approach for treatment of eccentric syringomyelia. METHODS A retrospective study was performed of 41 patients with idiopathic or secondary eccentric syringomyelia from November 2011 to December 2022. Syringo-subarachnoid shunt placement with direct tube or T-tube via the DREZ approach was performed. The modified Japanese Orthopaedic Association low back pain scale was used to investigate the severity of clinical symptoms. Magnetic resonance imaging was used to investigate therapeutic efficacy(reduction of the cavity volume by >10% was considered an improvement and 50% was considered a significant improvement). RESULTS Incision length of the spinal cortex in the direct tube group was shorter than in the T-tube group (3.10 ± 0.28 cm vs. 5.03 ± 0.19 cm), with a significant difference between the 2 groups (t = -52.56, P < 0.001). Modified Japanese Orthopaedic Association score 3 months postoperatively was significantly better than the preoperative score in both the direct tube group(t = 40.954, P < 0.001) and the T-tube group(t = 24.769, P < 0.001). Statistical comparison revealed there was no difference in imaging improvement between the direct tube group and T-tube group 3 months (χ2 = 0.20, P = 0.655) and 12 months (χ2 = 0.21, P = 0.647) postoperatively. CONCLUSIONS Syringo-subarachnoid shunt placement with direct tube via the DREZ approach for treatment of eccentric syringomyelia is safer than with T-tube via the DREZ approach due to smaller incision length and less of a space-occupying effect with same therapeutic efficacy.
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Affiliation(s)
- Da-Wei Dai
- Department of Neurosurgery, Renji Hospital, Shanghai Jiaotong University, Shanghai, China; Department of Neurosurgery, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Guang-Ming Wang
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Teng-Fei Zhang
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Chun-Hui Wang
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Abdylla Gulberdiyev
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Yong-Ming Qiu
- Department of Neurosurgery, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Shuo Han
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, Shanghai, China.
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Chen HY, Li Q, Zhou PP, Yang TX, Liu SW, Zhang TF, Cui Z, Lyu JJ, Wang YG. Mechanisms of Chinese Medicine in Gastroesophageal Reflux Disease Treatment: Data Mining and Systematic Pharmacology Study. Chin J Integr Med 2023; 29:838-846. [PMID: 35997858 DOI: 10.1007/s11655-022-3538-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2022] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To identify specific Chinese medicines (CMs) that may benefit patients with gastroesophageal reflux disease (GERD), and explore the action mechanism. METHODS Domestic and foreign literature on the treatment of GERD with CMs was searched and selected from China National Knowledge Infrastructure, China Science and Technology Journal Database, Wanfang Database, and PubMed from October 1, 2011 to October 1, 2021. Data from all eligible articles were extracted to establish the database of CMs for GERD. Apriori algorithm of data mining techniques was used to analyze the rules of herbs selection and core Chinese medicine formulas were identified. A system pharmacology approach was used to explore the action mechanism of these medicines. RESULTS A total of 278 prescriptions for GERD were analyzed, including 192 CMs. Results of Apriori algorithm indicated that Evodiae Fructus and Coptidis Rhizoma were the highest confidence combination. A total of 32 active ingredients and 66 targets were screened for the treatment of GERD. Enrichment analysis showed that the mechanisms of action mainly involved pathways in cancer, fluid shear stress and atherosclerosis, advanced glycation end product (AGE), the receptor for AGE signaling pathway in diabetic complications, bladder cancer, and rheumatoid arthritis. CONCLUSION Evodiae Fructus and Coptidis Rhizoma are the core drugs in the treatment of GERD and the potential mechanism of action of these medicines includes potential target and pathways.
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Affiliation(s)
- Hao-Yu Chen
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China
| | - Qi Li
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China
| | - Ping-Ping Zhou
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China
| | - Tian-Xiao Yang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China
| | - Shao-Wei Liu
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China
| | - Teng-Fei Zhang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China
| | - Zhen Cui
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China
| | - Jing-Jing Lyu
- Department of Gastroenterology, Hebei Province Hospital of Chinese Medicine, Shijiazhuang, 050091, China
| | - Yan-Gang Wang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China.
- Department of Gastroenterology, Beijing University of Chinese Medicine Third Affiliated Hospital, Beijing, 100029, China.
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Wang LL, Li RT, Zang ZH, Song YX, Zhang YZ, Zhang TF, Wang FZ, Hao GP, Cao L. 6-Methoxydihydrosanguinarine exhibits cytotoxicity and sensitizes TRAIL-induced apoptosis of hepatocellular carcinoma cells through ROS-mediated upregulation of DR5. Med Oncol 2023; 40:266. [PMID: 37566135 DOI: 10.1007/s12032-023-02129-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 07/18/2023] [Indexed: 08/12/2023]
Abstract
6-methoxydihydrosanguinarine (6-MS), a natural benzophenanthridine alkaloid extracted from Macleaya cordata (Willd.) R. Br, has shown to trigger apoptotic cell death in cancer cells. However, the exact mechanisms involved have not yet been clarified. The current study reveals the underlying mechanisms of 6-MS-induced cytotoxicity in hepatocellular carcinoma (HCC) cells and investigates whether 6-MS sensitizes TNF-related apoptosis inducing ligand (TRAIL)-induced apoptosis. 6-MS was shown to suppress cell proliferation and trigger cell cycle arrest, DNA damage, and apoptosis in HCC cells. Mechanisms analysis indicated that 6-MS promoted reactive oxygen species (ROS) generation, JNK activation, and inhibits EGFR/Akt signaling pathway. DNA damage and apoptosis induced by 6-MS were reversed following N-acetyl-l-cysteine (NAC) treatment. The enhancement of PARP cleavage caused by 6-MS was abrogated by pretreatment with JNK inhibitor SP600125. Furthermore, 6-MS enhanced TRAIL-mediated HCC cells apoptosis by upregulating the cell surface receptor DR5 expression. Pretreatment with NAC attenuated 6-MS-upregulated DR5 protein expression and alleviated cotreatment-induced viability reduction, cleavage of caspase-8, caspase-9, and PARP. Overall, our results suggest that 6-MS exerts cytotoxicity by modulating ROS generation, EGFR/Akt signaling, and JNK activation in HCC cells. 6-MS potentiates TRAIL-induced apoptosis through upregulation of DR5 via ROS generation. The combination of 6-MS with TRAIL may be a promising strategy and warrants further investigation.
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Affiliation(s)
- Lin-Lin Wang
- School of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, People's Republic of China
| | - Ruo-Tong Li
- Department of Pathology, Tai' an Central Hospital, Taian, 271000, People's Republic of China
| | - Zi-Heng Zang
- School of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, People's Republic of China
| | - Yun-Xuan Song
- School of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, People's Republic of China
| | - Yu-Zhe Zhang
- School of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, People's Republic of China
| | - Teng-Fei Zhang
- School of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, People's Republic of China
| | - Feng-Ze Wang
- School of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, People's Republic of China
- Department of Pathology, The Second Affiliated Hospital of Shandong First Medical University, Taian, 271000, People's Republic of China
| | - Gang-Ping Hao
- School of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, People's Republic of China.
| | - Lu Cao
- Department of Pathology, The Second Affiliated Hospital of Shandong First Medical University, Taian, 271000, People's Republic of China.
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Jiang Y, Huang W, Wu XJ, Shi XL, Hu RR, Chen W, Zhang TF, Xu XL, Huang CG, Hou LJ. Invention of a non-invasive intracranial pressure (ICP) monitoring system - an enlightenment from a hydrocephalus study. Br J Neurosurg 2022; 36:693-698. [PMID: 35393907 DOI: 10.1080/02688697.2022.2059057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Mechanical obstruction is the most common cause of shunt failure for hydrocephalic patients. However, the diagnosis is extremely challenging and often requires invasive testing methods. Thus, a simple and non-invasive technique is in urgent need to predict the intracranial pressure (ICP) of hydrocephalic patients during their post-surgical follow-up, which could help neurosurgeons to determine the conditions of the shunt system. MATERIALS AND METHODS Two groups of patients were enrolled in the current study. In group I, patients were enrolled as they were diagnosed with high ICP hydrocephalus and received shunt surgery. The shunt valve pressures were taken for their post-surgical ICP. Meanwhile, the participants of group II exhibited abnormally increased lumbar puncture opening pressure (LPOP; from 180 to 400 mmH2O). Both the ICP and LPOP were used to match with their corresponding tympanic membrane temperature (TMT). RESULTS When patients' ICP were in the normal range (group I, from 50 to 180 mmH2O), the TMT correlated with ICP in a linear regression model (R2 = 0.59, p < 0.001). Interestingly, when patients exhibited above-normal ICP (LPOP was from 180 to 400 mmH2O), their TMT fit well with the ICP in a third-order polynomial regression (R2 = 0.88). When the ICP was 287.98 mmH2O, the TMT approached the vertex, which was 38.54 °C. Based on this TMT-ICP algorithm, we invented a non-invasive ICP monitor system. Interestingly, a tight linear correlation was detected between the ICP data drawn from the non-invasive device and Codman ICP monitoring system (R2 = 0.93, p < 0.01). CONCLUSIONS We believe the TMT-ICP algorithm (the Y-Jiang model) could be used for preliminary prediction of shunt malfunction as well as monitoring ICP changes.
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Affiliation(s)
- Ying Jiang
- Department of Neurosurgery, Shanghai Chang Zheng Hospital, Shanghai, People's Republic of China
| | - Wei Huang
- Department of Minimally Invasive Neurosurgery, The First affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Xiao-Jun Wu
- Department of Neurosurgery, Shanghai Cancer Center, Shanghai Fu-Dan University School of Medicine, Shanghai, People's Republic of China
| | - Xiao-Lei Shi
- Department of Radiology, Shanghai Chang Zheng Hospital, Shanghai, People's Republic of China
| | - Rong-Rong Hu
- Department of Radiology, Shanghai Chang Zheng Hospital, Shanghai, People's Republic of China
| | - Wen Chen
- Department of Neurosurgery, Shanghai Chang Zheng Hospital, Shanghai, People's Republic of China
| | - Teng-Fei Zhang
- Department of Neurosurgery, Shanghai Chang Zheng Hospital, Shanghai, People's Republic of China
| | - Xiao-Long Xu
- Department of Neurosurgery, Shanghai Chang Hai Hospital, Shanghai, People's Republic of China
| | - Cheng-Guang Huang
- Department of Neurosurgery, Shanghai Chang Zheng Hospital, Shanghai, People's Republic of China
| | - Li-Jun Hou
- Department of Neurosurgery, Shanghai Chang Zheng Hospital, Shanghai, People's Republic of China
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Xing L, Lv HT, Liu SG, Wang WB, Zhang TF, Liu JH, Bian W. The effect of gemcitabine combined with AMD3100 applying to cholangiocarcinoma RBE cell lines to CXCR4/CXCL12 axis. Scand J Gastroenterol 2021; 56:914-919. [PMID: 34165373 DOI: 10.1080/00365521.2021.1906944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
PURPOSE To evaluate the effect of AMD3100 treatment to cholangiocarcinoma by analyzing the relationship between them, and provide experimental evidence for whether AMD3100 can become a clinical treatment drug for cholangiocarcinoma. MATERIALS AND METHODS Cholangiocarcinoma RBE cell lines were used in this study. MTT cell proliferation test was used for evaluating the effect of gemcitabine and AMD3100 to cell. CXCR4, N-cadherin, VEGF-C and MMP-9 were detect by RT-PCR and western. Transwell was used for evaluating the invasion effect. RESULTS We demonstrated that as the concentration of gemcitabine increasing from 0.33, 3.33 to 33.33 uM, the cell survival rate was 76.65%, 71.40%, 52.25%, respectively. RT-PCR and Western blot that gemcitabine could affect the expression of CXCR4 protein and the level of mRNA transcription in a dose-dependent manner. N-cadherin VEGF-C, MMP-9 mRNA transcription level showed a significant upward trend in gemcitabine group. In Transwell test, the number of cells in the gemcitabine group was significantly higher than that in the no-medication group (p < .05), the AMD3100 group and the combination group of gemcitabine and AMD3100, the difference between the no-medication group and the AMD3100 monotherapy group was not significant, and the combination group was between them. CONCLUSIONS This study showed that gemcitabine significantly inhibited the growth of cholangiocarcinoma RBE cells in a dose-dependent manner, and gemcitabine can affect the expression of CXCR4, N-cadherin, VEGF-C, MMP-9 protein and mRNA. Cell invasion and metastasis-related factors decreased after AMD3100 combined with gemcitabine.
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Affiliation(s)
- Li Xing
- Department of Gastrointestinal Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
| | - Hai-Tao Lv
- Department of Hepatobiliary Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
| | - San-Guang Liu
- Department of Hepatobiliary Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
| | - Wen-Bin Wang
- Department of Hepatobiliary Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
| | - Teng-Fei Zhang
- Department of Hepatobiliary Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
| | - Jian-Hua Liu
- Department of Hepatobiliary Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
| | - Wei Bian
- Department of Hepatobiliary Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
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Wei Q, Fang ZY, Zhang ZM, Zhang TF. Therapeutic tumor vaccines — a rising star to benefit cancer patients. Artif Intell Cancer 2021; 2:25-41. [DOI: 10.35713/aic.v2.i3.25] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/11/2021] [Accepted: 06/22/2021] [Indexed: 02/06/2023] Open
Abstract
Malignant tumors are still a worldwide threat to human health. Tumor treatment strategies are constantly evolving, and the advent of tumor immunotherapy has brought up hope to many types of tumors, especially for those that are refractory to conventional therapies including surgery, radiotherapy, and chemotherapy. Tumor vaccines can initiate or amplify an anti-tumor immune response in tumor patients through active immunization, and therefore occupy an important position in tumor immunotherapy. The main types of tumor vaccines include tumor cell vaccines, dendritic cell vaccines, polypeptide vaccines and nucleic acid vaccines. Due to factors such as poor antigen selection and suppressive tumor microenvironment, earliest tumor vaccines on clinical trials failed to achieve satisfactory clinical effects. However, with the development of second-generation genome sequencing technologies and bioinformatics tools, it is possible to predict neoantigens generated by tumor-specific mutations and therefore prepare personalized vaccines. This article summarizes the global efforts in developing tumor vaccines and highlights several representative tumor vaccines in each category.
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Affiliation(s)
- Qian Wei
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
| | - Zhao-Yuan Fang
- Key Laboratory of Systems Biology, Institute of Biochemistry and Cell Biology, Shanghai 200031, China
| | - Zi-Meng Zhang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
| | - Teng-Fei Zhang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
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Yu C, Zhang P, Zhang TF, Sun L. IL-34 regulates the inflammatory response and anti-bacterial immune defense of Japanese flounder Paralichthys olivaceus. Fish Shellfish Immunol 2020; 104:228-236. [PMID: 32502613 DOI: 10.1016/j.fsi.2020.05.073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 05/24/2020] [Accepted: 05/26/2020] [Indexed: 06/11/2023]
Abstract
Interleukin (IL)-34 is a relatively recently discovered cytokine with pleiotropic effects on various cellular activities, including immune response. In fish, the knowledge on the function of IL-34 is limited. In the present work, we investigated the function of Japanese flounder Paralichthys olivaceus IL-34 (PoIL-34) in association with inflammation and immune defense. PoIL-34 possesses the conserved structure of IL-34 superfamily and shares 21.52% sequence identity with murine IL-34. PoIL-34 expression was detected in a wide range of tissues of flounder, in particular intestine, and was regulated to a significant extent by bacterial infection in a time-dependent fashion. In vitro studies showed that recombinant PoIL-34 (rPoIL-34) bound peripheral blood leukocytes (PBLs) and promoted ROS production, acid phosphatase activity, and cellular resistance against bacterial infection. At the molecular level, rPoIL-34 enhanced the expressions of inflammatory cytokines and specific JAK and STAT genes. Similar stimulatory effects of rPoIL-34 were observed in vivo. When PoIL-34 was overexpressed in flounder, the expressions of pro- and anti-inflammatory mediators were significantly affected in a tissue-dependent manner, which correlated with an augmented ability of the fish to eliminate invading pathogens from tissues. Together, these results indicated that PoIL-34 regulated inflammatory response probably via specific JAK/STAT pathways and had a significant influence on the immune defense of flounder against bacterial infection.
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Affiliation(s)
- Chao Yu
- CAS Key Laboratory of Experimental Marine Biology, CAS Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; University of Chinese Academy of Sciences, Beijing, China
| | - Peng Zhang
- CAS Key Laboratory of Experimental Marine Biology, CAS Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; University of Chinese Academy of Sciences, Beijing, China
| | - Teng-Fei Zhang
- CAS Key Laboratory of Experimental Marine Biology, CAS Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; University of Chinese Academy of Sciences, Beijing, China
| | - Li Sun
- CAS Key Laboratory of Experimental Marine Biology, CAS Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
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Zuo LQ, Zhang TF, Zhang ZK, Hou JX, Liu GJ, Du JL, Li LJ. A 3D binuclear salen-based multifunctional MOF: Degradation of MO dye and highly selective sensing of Fe3+. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2018.11.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Du YB, Zhang TF, Cui K, Jin SL, Xi Y, Ma W. [The influence of Thymidine Phosphorylase genetic variation on clinical outcomes and safety of colorectal cancer patients received adjuvant chemotherapy after R0 resection]. Zhonghua Yi Xue Za Zhi 2018; 98:2569-2573. [PMID: 30220141 DOI: 10.3760/cma.j.issn.0376-2491.2018.32.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Objective: To study the association between Thymidine Phosphorylase (TYMP) genetic variation and clinical outcomes and safety of postoperative colorectal cancer (CRC) patients. Methods: A total of 235 patients with colorectal cancer underwent surgical treatment were included in this retrospective analysis. Peripheral blood and the postoperative tissue specimen of the CRC patients were collected for the genotyping of polymorphism and TYMP mRNA expression, respectively. The correlation between polymorphism and clinical outcomes and safety of postoperative CRC patients were analysed. Results: Located in the upstream, 5633C>T was of clinical significance. The prevalence of 5633C>T in TYMP among the CRC patients were as follows: CC genotype 149 cases (63.40%), CT genotype 73 cases (31.06%), TT genotype 13 cases (5.54%), minor allele frequency of 5633C>T is 0.21. The distribution of three genotypes was in accordance with Hardy-Weinberg Equilibrium (P=0.313). CT genotype and TT genotype patients were merged in the comparison of prognosis. The survival analysis of patients with different genotypes found that the median Overall Survival (OS) of CT/TT genotype and CC genotype were 5.8 and 4.5 year, which was statistically significant (P=0.009). Adjusted in multivariate Cox regression analysis, CT/TT genotype was an independent favorable factor for OS (HR=0.67, P=0.015). Additionally, of the 87 postoperative tissue specimens, the results showed that the expression of TYMP in cancer tissues of the patients with CT or TT genotypes were significantly higher than those of the wild type CC genotype patients (P=0.019). And the safety analysis showed that the incidence of grade 3 hand-foot syndrome among CT/TT genotype patients were higher than that of CC genotype patients (33.72% vs 20.13%, OR=1.68, P=0.021). Conclusion: The polymorphism 5633C>T of TYMP may impact the prognosis of CRC patients received adjuvant chemotherapy by influencing the mRNA expression of TYMP.
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Affiliation(s)
- Y B Du
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
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Li PH, Zheng PP, Zhang TF, Wen GY, Shao HB, Luo QP. Fowl adenovirus serotype 4: Epidemiology, pathogenesis, diagnostic detection, and vaccine strategies. Poult Sci 2018; 96:2630-2640. [PMID: 28498980 DOI: 10.3382/ps/pex087] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 03/20/2017] [Indexed: 12/13/2022] Open
Abstract
Fowl adenovirus (FAdV) serotype-4 is highly pathogenic for chickens, especially for broilers aged 3 to 5 wk, and it has emerged as one of the foremost causes of economic losses to the poultry industry in the last 30 years. The liver is a major target organ of FAdV-4 infections, and virus-infected chickens usually show symptoms of hydropericardium syndrome. The virus is very contagious, and it is spread both vertically and horizontally. It can be isolated from infected liver homogenates and detected by several laboratory diagnostic methods (including an agar gel immunodiffusion test, indirect immunofluorescence assays, counterimmunoelectrophoresis, enzyme-linked immunosorbent assays, restriction endonuclease analyses, polymerase chain reaction (PCR), real-time PCR, and high-resolution melting-curve analyses). Although inactivated vaccines have been deployed widely to control the disease, attenuated live vaccines and subunit vaccines also have been developed, and they are more attractive vaccine candidates. This article provides a comprehensive review of FAdV-4, including its epidemiology, pathogenesis, diagnostic detection, and vaccine strategies.
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Affiliation(s)
- P H Li
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Special 1, Nanhuyaoyuan, Hongshan District, Wuhan, 430064, China.,Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Science, Wuhan, China
| | - P P Zheng
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Special 1, Nanhuyaoyuan, Hongshan District, Wuhan, 430064, China.,Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Special 1, Nanhuyaoyuan, Hongshan District, Wuhan, 430064, China
| | - T F Zhang
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Special 1, Nanhuyaoyuan, Hongshan District, Wuhan, 430064, China.,Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Special 1, Nanhuyaoyuan, Hongshan District, Wuhan, 430064, China
| | - G Y Wen
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Special 1, Nanhuyaoyuan, Hongshan District, Wuhan, 430064, China.,Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Special 1, Nanhuyaoyuan, Hongshan District, Wuhan, 430064, China
| | - H B Shao
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Special 1, Nanhuyaoyuan, Hongshan District, Wuhan, 430064, China.,Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Special 1, Nanhuyaoyuan, Hongshan District, Wuhan, 430064, China
| | - Q P Luo
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Special 1, Nanhuyaoyuan, Hongshan District, Wuhan, 430064, China.,Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Special 1, Nanhuyaoyuan, Hongshan District, Wuhan, 430064, China
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12
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Kong WY, Wu GA, Wang KY, Zhang TF, Zou YF, Wang DD, Luo LB. Graphene-β-Ga 2 O 3 Heterojunction for Highly Sensitive Deep UV Photodetector Application. Adv Mater 2016; 28:10725-10731. [PMID: 27748975 DOI: 10.1002/adma.201604049] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 08/30/2016] [Indexed: 05/14/2023]
Abstract
A deep UV light photodetector is assembled by coating multilayer graphene on beta-gallium oxide (β-Ga2 O3 ) wafer. Optoelectronic analysis reveals that the heterojunction device is virtually blind to light illumination with wavelength longer than 280 nm, but is highly sensitive to 254 nm light with very good stability and reproducibility.
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Affiliation(s)
- Wei-Yu Kong
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Guo-An Wu
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Kui-Yuan Wang
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Teng-Fei Zhang
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Yi-Feng Zou
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Dan-Dan Wang
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Lin-Bao Luo
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
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13
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Zhao W, Yang J, Zhang J, Wang W, Zhang T, Han L, Cui D, Peng Q, Xu Z. Efficient optical image amplifier using periodically poled lithium niobate. Appl Opt 2015; 54:9172-9176. [PMID: 26560570 DOI: 10.1364/ao.54.009172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
An efficient optical image amplification scheme has been proposed and demonstrated using the quasi-phase-matched optical parametric amplifier. Pumped with the 152 μJ per pulse pump laser at 532 nm, the input weak infrared image at 1064 nm with 3.5 pJ energy is amplified with a 55 dB optical gain using only a 3 mm long MgO-doped periodically poled lithium niobate (MgO:PPLN) crystal. A spatial resolution of 17 lines/mm on the surface of the PPLN crystal is obtained. Further numerical simulation indicates that our scheme enables efficient image enhancement with a long pulsed pumping source, such as nanosecond lasers.
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14
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Wang M, Li JS, Ping Y, Li ZQ, Wang LP, Guo Q, Zhang Z, Yue DL, Wang F, Zhang TF, Islam MS, Zhang Y. The host HLA-A*02 allele is associated with the response to pegylated interferon and ribavirin in patients with chronic hepatitis C virus infection. Arch Virol 2015; 160:1043-54. [PMID: 25666200 DOI: 10.1007/s00705-015-2361-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 01/31/2015] [Indexed: 12/16/2022]
Abstract
Human leukocyte antigen (HLA) alleles are associated with both the progression of chronic hepatitis C (CHC) and the sustained virological response (SVR) to antiviral therapy. HLA-A*02 is the most common HLA allele in people of European/Caucasian descent and the Chinese and Japanese population. Therefore, we investigated whether HLA-A*02 expression is associated with disease outcome in Chinese CHC patients. Three hundred thirty-one treatment-naïve CHC patients were recruited in this study. The expression of HLA-A*02 was tested by FACS and LABType SSO assays. All patients were treated weekly with pegylated interferon plus ribavirin (PEG-IFN/RBV) according to a standard protocol. Virological response was assessed by TaqMan assay at the 4th, 12th, 24th, and 48th week of therapy, and again at the 24th week post-therapy. By the end of the study, 293 CHC patients, including 144 HLA-A*02-positive patients and 149 HLA-A*02-negative patients, were evaluable for analysis. There were no statistical differences in clinicopathological parameters between HLA-A*02-positive and negative patients before antiviral therapy (P > 0.05). The HLA-A*02-positive patients had a higher rapid virological response (RVR, 74.3 % versus 62.4 %, P = 0.03) and SVR (78.5 % versus 64.4 %, P = 0.01) and a lower relapse rate (4.2 % versus 11.9 %, P = 0.03) than HLA-A*02-negative patients. Multivariable logistic regression analysis showed that HLA-A*02 expression, liver fibrosis stages <S3, HCV genotype 2a, IL-28B rs8099917 TT, and RVR were independent predictive factors of SVR (P < 0.05). Host HLA-A*02 allele expression is associated with SVR, highlighting the importance of considering HLA-A*02 as a predictor of the response to PEG-IFN/RBV treatment in the Chinese population with CHC.
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Affiliation(s)
- Meng Wang
- Department of Gastroenterology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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15
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Liang FX, Zhang DY, Zou YF, Hu H, Zhang TF, Wu YC, Luo LB. Tunable p-type doping of Si nanostructures for near infrared light photodetector application. RSC Adv 2015. [DOI: 10.1039/c4ra16781c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A near infrared light nano-heterojunction photodetector was fabricated by combining graphene and boron doped p-type silicon nanowires, which were synthesized by a co-thermal evaporation method.
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Affiliation(s)
- Feng-Xia Liang
- School of Materials Science and Engineering
- Anhui Provincial Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei
- P. R. China
| | - Deng-Yue Zhang
- School of Materials Science and Engineering
- Anhui Provincial Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei
- P. R. China
| | - Yi-feng Zou
- School of Electronic Science and Applied Physics
- Hefei University of Technology
- Hefei
- P. R. China
| | - Han Hu
- School of Electronic Science and Applied Physics
- Hefei University of Technology
- Hefei
- P. R. China
| | - Teng-Fei Zhang
- School of Electronic Science and Applied Physics
- Hefei University of Technology
- Hefei
- P. R. China
| | - Yu-Cheng Wu
- School of Materials Science and Engineering
- Anhui Provincial Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei
- P. R. China
| | - Lin-Bao Luo
- School of Electronic Science and Applied Physics
- Hefei University of Technology
- Hefei
- P. R. China
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16
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Fu CY, Xia RL, Zhang TF, Lu Y, Zhang SF, Yu ZQ, Jin T, Mou XZ. Hemokinin-1(4-11)-induced analgesia selectively up-regulates δ-opioid receptor expression in mice. PLoS One 2014; 9:e90446. [PMID: 24587368 PMCID: PMC3938741 DOI: 10.1371/journal.pone.0090446] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Accepted: 01/30/2014] [Indexed: 12/01/2022] Open
Abstract
Our previous studies have shown that an active fragment of human tachykinins (hHK-1(4-11)) produced an opioid-independent analgesia after intracerebroventricular (i.c.v.) injection in mice, which has been markedly enhanced by a δ OR antagonist, naltrindole hydrochloride (NTI). In this study, we have further characterized the in vivo analgesia after i.c.v. injection of hHK-1(4-11) in mouse model. Our qRT-PCR results showed that the mRNA levels of several ligands and receptors (e.g. PPT-A, PPT-C, KOR, PDYN and PENK) have not changed significantly. Furthermore, neither transcription nor expression of NK1 receptor, MOR and POMC have changed noticeably. In contrast, both mRNA and protein levels of DOR have been up-regulated significantly, indicating that the enhanced expression of δ opioid receptor negatively modulates the analgesia induced by i.c.v. injection of hHK-1(4-11). Additionally, the combinatorial data from our previous and present experiments strongly suggest that the discriminable distribution sites in the central nervous system between hHK-1(4-11) and r/mHK-1 may be attributed to their discriminable analgesic effects. Altogether, our findings will not only contribute to the understanding of the complicated mechanisms regarding the nociceptive modulation of hemokinin-1 as well as its active fragments at supraspinal level, but may also lead to novel pharmacological interventions.
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MESH Headings
- Analgesia
- Animals
- Blotting, Western
- Female
- Gene Expression/drug effects
- Humans
- Injections, Intraventricular
- Male
- Mice, Inbred ICR
- Peptide Fragments/administration & dosage
- Peptide Fragments/pharmacology
- Pro-Opiomelanocortin/genetics
- Pro-Opiomelanocortin/metabolism
- Protein Precursors/genetics
- Protein Precursors/metabolism
- Receptors, Opioid, delta/genetics
- Receptors, Opioid, delta/metabolism
- Receptors, Opioid, mu/genetics
- Receptors, Opioid, mu/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Tachykinins/administration & dosage
- Tachykinins/chemistry
- Tachykinins/genetics
- Tachykinins/metabolism
- Tachykinins/pharmacology
- Up-Regulation/drug effects
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Affiliation(s)
- Cai-Yun Fu
- Lab of Proteomics and Molecular Enzymology, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China
- Institute for Cell-Based Drug Development of Zhejiang Province, Hangzhou, China
- * E-mail: (CF); (XM); (ZY)
| | - Rui-Long Xia
- Lab of Proteomics and Molecular Enzymology, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China
| | - Teng-Fei Zhang
- Lab of Proteomics and Molecular Enzymology, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yan Lu
- Lab of Proteomics and Molecular Enzymology, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China
| | - Shi-Fu Zhang
- Lab of Proteomics and Molecular Enzymology, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zhi-Qiang Yu
- Center for BioEnergetics, The Biodesign Institute, and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona, United States of America
- * E-mail: (CF); (XM); (ZY)
| | - Tao Jin
- Zhejiang Provincial People’s Hospital, Hangzhou, China
| | - Xiao-Zhou Mou
- Zhejiang Provincial People’s Hospital, Hangzhou, China
- Institute for Cell-Based Drug Development of Zhejiang Province, Hangzhou, China
- * E-mail: (CF); (XM); (ZY)
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17
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Wei P, Li XW, Fan C, Zhang TF, Liu YK, Su Y, Yang ZJ. [Fine root biomass and carbon storage in surface soil of Cinnamomum camphora plantation in rainy area of West China]. Ying Yong Sheng Tai Xue Bao 2013; 24:2755-2762. [PMID: 24483067] [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: 06/03/2023]
Abstract
Fine root in forest ecosystems plays an important role in global C cycle. In this study, a measurement was made on the fine root biomass and carbon storage in the surface soil (0-30 cm) of a 31 year-old Cinnamomum camphora plantation in the Rainy Area of West China in November, 2010-December, 2011. The total biomass and carbon storage of the fine roots (living and dead) in the surface soil were 1592.29 kg x hm(-2) and 660.68 kg C x hm(-2), in which, living fine roots accounted for 91.1% and 91.8% respectively. The total biomass and carbon storage of the first five order living roots and dead roots decreased significantly with increasing soil depth, and the living root biomass and carbon storage increased significantly with root order. The sum of the biomass and carbon storage of living and dead fine roots was the largest in autumn and the smallest in winter, but the biomass and carbon storage of the dead fine roots were the largest in winter and the smallest in summer. The biomass and carbon storage of the first two order roots were the largest in summer and the smallest in winter, while those of the last three order roots were the largest in autumn and the smallest in winter. The spatial heterogeneity of soil moisture and nutrients was the main factor affecting the fine root biomass and carbon storage.
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Affiliation(s)
- Peng Wei
- College of Forestry, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - Xian-Wei Li
- College of Forestry, Sichuan Agricultural University, Ya'an 625014, Sichuan, China
| | - Chuan Fan
- College of Forestry, Sichuan Agricultural University, Ya'an 625014, Sichuan, China
| | - Teng-Fei Zhang
- College of Forestry, Sichuan Agricultural University, Ya'an 625014, Sichuan, China
| | - Yun-Ke Liu
- College of Forestry, Sichuan Agricultural University, Ya'an 625014, Sichuan, China
| | - Yu Su
- College of Forestry, Sichuan Agricultural University, Ya'an 625014, Sichuan, China
| | - Zheng-Ju Yang
- College of Forestry, Sichuan Agricultural University, Ya'an 625014, Sichuan, China
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Xie ZL, Zhang TF, Chen XZ, Li GD, Zhang JG. Effects of maturity stages on the nutritive composition and silage quality of whole crop wheat. Asian-Australas J Anim Sci 2012; 25:1374-80. [PMID: 25049492 PMCID: PMC4093009 DOI: 10.5713/ajas.2012.12084] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 06/24/2012] [Accepted: 05/15/2012] [Indexed: 11/27/2022]
Abstract
The changes in yields and nutritive composition of whole crop wheat (Triticum aestivum L.) during maturation and effects of maturity stage and lactic acid bacteria (LAB) inoculants on the fermentation quality and aerobic stability were investigated under laboratory conditions. Whole crop wheat harvested at three maturation stages: flowering stage, milk stage and dough stage. Two strains of LAB (Lactobacillus plantarum: LAB1, Lactobacillus parafarraqinis: LAB2) were inoculated for wheat ensiling at 1.0×105 colony forming units per gram of fresh forage. The results indicated that wheat had higher dry matter yields at the milk and dough stages. The highest water-soluble carbohydrates content, crude protein yields and relative feed value of wheat were obtained at the milk stage, while contents of crude fiber, neutral detergent fiber and acid detergent fiber were the lowest, compared to the flowering and dough stages. Lactic acid contents of wheat silage significantly decreased with maturity. Inoculating homofermentative LAB1 markedly reduced pH values and ammonia-nitrogen (NH3-N) content (p<0.05) of silages at three maturity stages compared with their corresponding controls. Inoculating heterofermentative LAB2 did not significantly influence pH values, whereas it notably lowered lactic acid and NH3-N content (p<0.05) and effectively improved the aerobic stability of silages. In conclusion, considering both yields and nutritive value, whole crop wheat as forage should be harvested at the milk stage. Inoculating LAB1 improved the fermentation quality, while inoculating LAB2 enhanced the aerobic stability of wheat silages at different maturity stages.
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Veri MC, Burke S, Huang L, Li H, Gorlatov S, Tuaillon N, Alderson R, Rainey J, Ciccarone V, Zhang T, Shah K, Jin L, Moore P, Koenig S, Johnson S, Bonvini E. Negative modulation of B-cell function via inhibitory receptor signaling by using novel diabody-based Dual-Affinity Re-Targeting (DART) molecules (96.14). The Journal of Immunology 2010. [DOI: 10.4049/jimmunol.184.supp.96.14] [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: 01/02/2023]
Abstract
Abstract
The Fc receptor, CD32B, functions as an inhibitory receptor and, when co-ligated with the B-cell antigen receptor (BCR) complex, dampens signaling and immune activation. Ligation of activating and inhibitory receptors is an obligatory event for CD32B inhibition coupling in B cells, which heightens the need for a bispecific molecule for interventional purposes. To exploit this mechanism, we have engineered a novel and stable bispecific diabody scaffold that facilitates heterodimeric assembly with high predictability. This Dual-Affinity Re-Targeting (DART) scaffold was used to couple an Fv specific for the inhibitory receptor, CD32B, with an Fv specific for the Ig-beta component (CD79B) of the BCR. The resulting CD32BxCD79B DART molecule was capable of co-ligating the activating and the inhibitory receptors on the B-cell surface, resulting in reduced BCR-induced calcium mobilization and phosphorylation of selected signaling molecules. These biochemical changes correlated with inhibition of B-cell proliferation and Ig secretion upon B-cell activation. In addition, a DART protein specific for the mouse orthologs of CD32B and CD79B reduced disease severity in a collagen-induced arthritis model. This novel approach to B-cell function modulation forms the basis for translating inhibitory signaling into therapeutic tools for managing autoimmune and inflammatory diseases.
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Affiliation(s)
| | | | | | - Hua Li
- 1MacroGenics, Inc., Rockville, MD
| | | | | | | | | | | | | | - Kay Shah
- 1MacroGenics, Inc., Rockville, MD
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Abstract
Wind pollination can provide reproductive insurance for animal-pollinated dioecious plants in the absence of available pollinators, but combinations of insect and wind pollination (ambophily) have rarely been studied in hermaphrodite herbs. We examined the stable occurrence of insect pollination and wind pollination over 4 years in a population of a biennial Aconitum species (A. gymnandrum) with actinomorphic and degenerate sepals. The total frequency of visits of two bumblebee species showed no distinct fluctuations in the studied population among the 4 years. However, seed production of netted flowers after emasculation indicated wind pollination had occurred. The seed number of bagged flowers with one visit by bumblebees was significantly less than that of netted flowers after one visit, or in control flowers. Both seed number and fruit set of netted flowers were significantly lower than in control flowers. These results suggest that wind pollination provides supplementary pollen to unvisited and/or once-visited flowers, but accounts for only a small amount of seed production compared to bumblebee pollination in natural conditions. Such a combination of insect and wind pollination might play an important role in maintaining sexual reproduction of this biennial herb, allowing it to persist in arid habitats on the Qinghai-Tibetan Plateau, especially during Quaternary glacial periods when pollinator populations oscillated extensively.
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Affiliation(s)
- Y W Duan
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai, China
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21
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Zhang TF, Yu SQ, Wang ZY. RbAp46 inhibits estrogen-stimulated progression of neoplastigenic breast epithelial cells. Anticancer Res 2007; 27:3205-3209. [PMID: 17970062] [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: 05/25/2023]
Abstract
BACKGROUND Despite widespread agreement that estrogens are involved in the etiology of human breast cancer, there is uncertainty as to the molecular mechanisms of estrogen action in early development of breast cancer. MATERIALS AND METHODS MCF10AT3B cells, a cell line derived from a xenograft model of human proliferative breast disease, were used to study the estrogen-stimulated malignant progression of neoplastigenic mammary epithelial cells. A stable cell line was established from MCF10AT3B cells that ectopically expresses the retinoblastoma suppressor (Rb)-associated protein 46 (RbAp46), a component of the histone modifying and remodeling complexes. Western blot and in vitro and in vivo growth assays were used to study the effects of constitutive RbAp46 expression on estrogen-stimulated cell proliferation. RESULTS Estrogen treatment downregulated RbAp46 expression in MCF10AT3B cells. Constitutive RbAp46 expression inhibited estrogen-stimulated cell growth in vitro. In nude mice, RbAp46 expression strongly suppressed estrogen-stimulated tumorigenesis of MCF10AT3B cells. In RbAp46-expressing tumors, beta-catenin protein was highly phosphorylated and the steady state levels of beta-catenin protein were significantly reduced. CONCLUSION RbAp46 plays an important role in the regulation of mitogenic estrogen signaling and dysregulated RbAp46 expression may contribute to estrogen-stimulated breast cancer development.
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Affiliation(s)
- Teng-Fei Zhang
- Department of Surgery, Creighton University Medical School, 2500 California Plaza, Omaha, NE 68178, USA
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22
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Qu C, Srivastava K, Ko J, Zhang TF, Sampson HA, Li XM. Induction of tolerance after establishment of peanut allergy by the food allergy herbal formula-2 is associated with up-regulation of interferon-? Clin Exp Allergy 2007; 37:846-55. [PMID: 17517098 DOI: 10.1111/j.1365-2222.2007.02718.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Peanut (PN)-anaphylaxis is potentially life threatening. We previously reported that a Chinese herbal medicine preparation, food allergy herbal formula-2 (FAHF-2), prevented peanut allergy (PNA) in mice when administered during sensitization. OBJECTIVE To investigate whether FAHF-2 also can prevent anaphylactic reactions when administered to mice with established PNA and, if so, whether protection would persist after cessation of therapy. METHODS C3H/HeJ mice sensitized and boosted over 8 weeks with a standard protocol known to establish PN hypersensitivity received seven weeks of FAHF-2 treatment or water as a sham treatment. Mice were subsequently challenged with PN at week 14 (1-day post-therapy) and week 18 (4-week post-therapy) to evaluate the efficacy and persistence of FAHF-2 treatment by assessing anaphylactic scores, core body temperatures and plasma histamine levels. Serum PN-specific antibody levels and cytokine profiles from splenocytes and mesenteric lymph node (MLN) cells were also determined. RESULTS All sham-treated mice challenged at weeks 14 and 18 showed anaphylactic symptoms. In contrast, FAHF-2-treated mice showed no sign of anaphylactic reactions. PN-specific IgE levels in FAHF-2-treated mice also were reduced whereas IgG2a levels were increased. Furthermore, MLN cells from FAHF-2-treated mice produced markedly less IL-4 and IL-5, but more IFN-gamma, and contained increased numbers of IFN-gamma-producing CD8+ cells as compared with sham-treated mice. CONCLUSION FAHF-2 treatment established PN tolerance in this model, which persisted for at least 4-week post-treatment. This result was associated with modulation of intestinal T helper type 1 cell (Th1) and Th2 cytokine production, and with increased numbers of mesenteric IFN-gamma-producing CD8+ cells.
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Affiliation(s)
- C Qu
- Department of Pediatrics, Division of Allergy and Immunology, Mount Sinai School of Medicine, New York, NY 10029-6574, USA
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23
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Abstract
UNLABELLED In case contaminants are found in enclosed environments such as aircraft cabins or buildings, it is useful to find the contaminant sources. One method to locate contaminant sources is by inverse computational fluid dynamics (CFD) modeling. As the inverse CFD modeling is ill posed, this paper has proposed to solve a quasi-reversibility (QR) equation for contaminant transport. The equation improves the numerical stability by replacing the second-order diffusion term with a fourth-order stabilization term in the governing equation of contaminant transport. In addition, a numerical scheme for solving the QR equation in unstructured meshes has been developed. This paper demonstrates how to use the inverse CFD model with the QR equation and numerical scheme to identify gaseous contaminant sources in a two-dimensional aircraft cabin and in a three-dimensional office. The inverse CFD model could identify the contaminant source locations but not very accurate contaminant source strength because of the dispersive property of the QR equation. The results also show that this method works better for convection dominant flows than the flows that convection is not so important. PRACTICAL IMPLICATIONS This paper presents a methodology that can be used to find contaminant source locations and strengths in enclosed environments with the data of airflow and contaminants measured by sensors. The method can be a very useful tool to find where, what, and how contamination has happened. The results can be used to develop appropriate measures to protect occupants in the enclosed environments from infectious diseases or terrorist releases of chemical/biological warfare agents as well as to decontaminate the environments.
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Affiliation(s)
- T F Zhang
- Air Transportation Center of Excellence for Airliner Cabin Environmental Research (ACER), School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-2088, USA
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Li XM, Zhang TF, Sampson H, Zou ZM, Beyer K, Wen MC, Schofield B. The potential use of Chinese herbal medicines in treating allergic asthma. Ann Allergy Asthma Immunol 2004; 93:S35-44. [PMID: 15330010 DOI: 10.1016/s1081-1206(10)61485-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To discuss the potential use of the Chinese herbal formula MSSM-002 in treating asthma based on its effects on a murine model of allergic asthma, immunoregulatory actions on T(H)2 cells in vitro, and the means of standardization for herbal formula quality control. DATA SOURCES Information presented at the 2002 American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting International Symposium on Complementary Alternative Medicine in San Antonio, TX. STUDY SELECTION All presentations from the ACAAI meeting that discussed MSSM-002 were considered for this review. RESULTS The Chinese herbal formula MSSM-002 suppressed airway hyperreactivity and eosinophilic inflammation in a murine model of allergic asthma. These effects were comparable to dexamethasone but were not accompanied by the suppression of T(H)1 responses seen with dexamethasone. In vitro studies demonstrated that MSSM-002 significantly decreased antigen-induced T(H)2 cytokine secretion by murine T(H)2 polarized splenocytes and human mucosal T(H)2 cell lines, which in contrast to dexamethasone did not cause apoptosis and was not cytotoxic but was associated with decreased GATA-3 expression. Chromatographic fingerprints of MSSM-002 and evaluation of in vivo actions showed that the quality of several batches of MSSM-002 was consistent. CONCLUSION MSSM-002 has a therapeutic effect on allergic asthma and immunoregulatory actions on established T(H)2 cells and may prove to be of potential clinical benefit to asthma patients.
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Affiliation(s)
- Xiu-Min Li
- Department of Pediatrics, Mount Sinai School of Medicine, New York, New York 10029-6574, USA.
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Srivastava K, Teper AA, Zhang TF, Li S, Walsh MJ, Huang CK, Kattan M, Schofield BH, Sampson HA, Li XM. Immunomodulatory effect of the antiasthma Chinese herbal formula MSSM-002 on TH2 cells. J Allergy Clin Immunol 2004; 113:268-76. [PMID: 14767441 DOI: 10.1016/j.jaci.2003.10.062] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND T(H)2 cytokines play a central role in the pathogenesis of allergic asthma. We previously showed that the "antiasthma" Chinese herbal formula MSSM-002 exhibited therapeutic effects on established allergic airway responses in a murine model of allergic asthma. However, the mechanisms underlying these effects are largely unknown. OBJECTIVE The objective of this study was to determine whether and how MSSM-002 modulates an established T(H)2 response and whether the actions of MSSM-002 on T(H)2 cell differs from corticosteroids. METHODS T(H)2 polarized splenocytes (T(H)2-SPCs) from mice with antigen-induced airway hyperresponsiveness and T(H)2 cloned cells, D10 G4.1 (D10), were cultured in the presence or absence of antigen with or without MSSM-002 and dexamethasone, and the proliferative responses and cytokine profiles were determined. Apoptosis and T(H)2 transcription factor GATA-3 expression and binding to IL-4 gene promoter and V(A) enhancer in MSSM-002-treated D10 cells were also determined. RESULTS MSSM-002 significantly decreased antigen-induced proliferation and IL-4 and IL-5 production but increased IFN-gamma production by T(H)2-SPCs, whereas dexamethasone suppressed IFN-gamma as well as IL-4 and IL-5. Anti-IL-12 antibody, although abrogating MSSM-002 induction of IFN-gamma, had no significant effect on MSSM-002 suppression of IL-4 and IL-5 secretion. MSSM-002 also suppressed T(H)2 cytokine secretion by D10 cells, and in contrast to dexamethasone, MSSM-002 did not induce apoptosis of D10 cells. MSSM-002 markedly suppressed GATA-3 mRNA and protein expression and the binding to IL-4 gene promoter and V(A) enhancer in D10 cells. CONCLUSION MSSM-002, in contrast to the overall suppression of T cells by dexamethasone, exhibits immunomodulatory actions on T(H)2 cells caused, at least partially, by downregulation of GATA-3.
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Affiliation(s)
- Kamal Srivastava
- Department of Pediatrics, Mount Sinai School of Medicine, New York, NY, USA
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Zhang TF, Yu SQ, Loggie BW, Wang ZY. Inducible expression of RbAp46 activates c-Jun NH2-terminal kinase-dependent apoptosis and suppresses progressive growth of tumor xenografts in nude mice. Anticancer Res 2003; 23:4621-7. [PMID: 14981905] [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: 04/29/2023]
Abstract
BACKGROUND The retinoblastoma (Rb) suppressor-associated protein 46 (RbAp46) is a member of the WD-repeat protein family and a component of histone modifying and remodeling complexes. Previously, we demonstrated that RbAp46 inhibits cell growth and suppresses the transformed phenotypes of tumor cell lines. MATERIALS AND METHODS We established a tetracycline-inducible RbAp46 expression system in Saos-2 cells to test the effects of RbAp46 induction on cell growth in vitro and on tumor formation in vivo. RESULTS We found that inducible expression of RbAp46 activated the c-Jun N-terminal kinase (JNK) signaling pathway and triggered apoptosis in Saos-2 cells. A dominant-negative mutant of JNK1, which can inhibit RbAp46-induced JNK activity, blocked RbAp46-mediated apoptosis. We also found that the induction of RbAp46 expression strongly suppressed the formation of tumors grafted in nude mice and drastically reduced growth of established tumor xenografts. CONCLUSION These results revealed a novel proapoptotic activity for RbAp46 via the JNK pathway and demonstrated that induction of RbAp46 expression inhibits progressive growth of tumor grafts in vivo.
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Affiliation(s)
- Teng-Fei Zhang
- Cancer Center, Creighton University, 2500 California Plaza, Omaha, NE 68178, USA
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Zhang TF, Yu SQ, Guan LS, Wang ZY. Inhibition of breast cancer cell growth by the Wilms' tumor suppressor WT1 is associated with a destabilization of beta-catenin. Anticancer Res 2003; 23:3575-84. [PMID: 14666652] [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: 04/27/2023]
Abstract
The Wilms' tumor suppressor gene, wt1, encodes a zinc-finger protein, WT1, that functions as a potent inhibitor of cell growth. The findings that expression levels of WT1 were down-regulated in breast cancer cell lines and in subsets of primary breast tumors led us to investigate the possible role of WT1 in tumorigenesis of breast cancer. We have established stable cell lines from a breast cancer cell line MDA-MB-231 to express exogenous WT1, and investigated the ability of WT1 to inhibit the transformed phenotype of MDA-MB-231 cells. We found that WT1 suppressed clonal growth of MDA-MB-231 cells in soft-agar and inhibited tumor growth of these cells in nude mice. We also found that the steady state levels of beta-catenin protein and the transcription activity of beta-catenin/Tcf signaling pathway were dramatically decreased in WT1-transfected cells. This decrease of beta-catenin was associated with increased levels of beta-catenin phosphorylation. Furthermore, the expression levels of GSK-3 beta, the kinase that phosphorylates beta-catenin and signals its degradation, were up-regulated in WT1-transfected cells. The results suggest that WT1 inhibits the transformed phenotype of breast cancer cells and down-regulates the beta-catenin/TCF signaling pathway through destabilization of beta-catenin.
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Affiliation(s)
- Teng-Fei Zhang
- Creighton University Medical Center, Omaha, NE 68123, USA
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Zhang TF, Yu SQ, Deuel TF, Wang ZY. Constitutive expression of Rb associated protein 46 (RbAp46) reverts transformed phenotypes of breast cancer cells. Anticancer Res 2003; 23:3735-40. [PMID: 14666671] [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: 04/27/2023]
Abstract
The retinoblastoma (Rb) suppressor associated protein 46 (RbAp46) is a subunit of chromatin modifying and remodeling complexes. Previously, we found that RbAp46 functions as a potent growth inhibitor. It is also a downstream effector of the Wilms' tumor suppressor, WT1. The findings that expression levels of WT1 were down-regulated in breast cancer cell lines and in subsets of primary breast tumors led us to investigate the possible role of RbAp46 in breast cancer tumorigenesis. Here, we found that RbAp46 expression levels were decreased in five established breast cancer cell lines compared to a normal mammary gland epithelial cell line. To investigate the effect of constitutive expression of RbAp46 on the transformed phenotypes of breast cancer cells, we established stable cell lines that constitutively express exogenous RbAp46 using three breast cancer cell lines, MCF-7, MDA-MB-231 and MDA-MB-436. We have found that RbAp46 expression suppressed colony formation of these breast cancer cells in soft-agar, and inhibited tumor formation of these cells in nude mice. Our data demonstrated that constitutive RbAp46 expression suppresses the transformed phenotypes of breast cancer cells, and suggested that dysregulation of RbAp46 expression may contribute to breast cancer tumorigenesis.
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Affiliation(s)
- Teng-Fei Zhang
- Creighton University Medical Center, 2500 California Plaza, Omaha, NE 68178, USA
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Lee SY, Huang CK, Zhang TF, Schofield BH, Burks AW, Bannon GA, Sampson HA, Li XM. Oral administration of IL-12 suppresses anaphylactic reactions in a murine model of peanut hypersensitivity. Clin Immunol 2001; 101:220-8. [PMID: 11683581 DOI: 10.1006/clim.2001.5122] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
There is no satisfactory therapeutic intervention for peanut allergy, which accounts for most life-threatening food allergic reactions. Since IL-12 has been found to inhibit allergic airway responses in a mouse model of asthma and to cure Th2 cytokine-mediated murine schistosomiasis, we hypothesized that IL-12 treatment might also inhibit peanut allergic reactions. Consequently, we investigated the effects of oral IL-12 treatment in a murine model of peanut allergy and found that oral administration of liposome encapsulated rIL-12 could both prevent and reverse peanut hypersensitivity and could reduce histamine release, peanut-specific serum IgE and IgG1, and fecal IgA levels. Oral IL-12 treatment also increased IFN-gamma but did not decrease IL-4 or IL-5 levels. We conclude that oral rIL-12 treatment has therapeutic as well as preventive effects on peanut allergy, which are associated with increased IFN-gamma production.
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Affiliation(s)
- S Y Lee
- Department of Pediatrics, Mount Sinai School of Medicine, New York, NY 10029, USA
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Li XM, Zhang TF, Huang CK, Srivastava K, Teper AA, Zhang L, Schofield BH, Sampson HA. Food Allergy Herbal Formula-1 (FAHF-1) blocks peanut-induced anaphylaxis in a murine model. J Allergy Clin Immunol 2001; 108:639-46. [PMID: 11590394 DOI: 10.1067/mai.2001.118787] [Citation(s) in RCA: 133] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Peanut allergy is a major cause of fatal and near-fatal anaphylactic reactions to foods. There is no curative therapy for this condition. Traditional Chinese medicines have been reported to have antiallergic properties, which might be useful for treating peanut allergy. OBJECTIVE The purpose of this study was to investigate the effects of a Chinese herbal formula, FAHF-1, on peanut anaphylactic reactions in a mouse model of peanut allergy. METHODS Mice were sensitized with freshly ground whole peanut in the presence of cholera toxin and boosted 1 and 3 weeks later. FAHF-1 treatment was initiated 1 week later and continued for 7 weeks. After treatment, mice were challenged with peanut, and anaphylactic symptoms, body temperatures, and plasma histamine and IgE levels were measured. T-cell proliferative responses and cytokine production were also determined. RESULTS FAHF-1 completely blocked peanut-induced anaphylactic symptoms and markedly reduced mast cell degranulation and histamine release. Peanut-specific serum IgE levels were significantly reduced by 2 weeks of treatment at the time of challenge, and they remained lower 4 weeks after discontinuation of treatment. FAHF-1 significantly reduced peanut-induced lymphocyte proliferation as well as IL-4, IL-5, and IL-13 synthesis but not IFN-gamma synthesis. No toxic effects on liver or kidney functions were observed, nor was there any overall immune suppression. CONCLUSION FAHF-1 protected peanut-sensitized mice from anaphylactic reactions and significantly reversed established IgE-mediated peanut allergy. This suggests that FAHF-1 might prove valuable for the treatment of peanut allergy.
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Affiliation(s)
- X M Li
- Department of Pediatrics, Mount Sinai School of Medicine, New York, NY 10029-6574, USA
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Lu X, Wu H, Xu GW, Guan AM, Zhao XJ, Song YJ, Zhang TF, Liu B. [Development of a gas chromatographic column system for the on-line analysis of trace tetrahydrofuran in hexane]. Se Pu 2001; 19:196-9. [PMID: 12541794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
A gas chromatographic system using home-made 7 microns thick cross-linked dimethylpolysiloxane columns for the on-line analysis of trace tetrahydrofuran in hexane in a rubber production facility was developed. The experimental parameters of the column system, including the temperature, flow rate as well as the back-flushing and heart-cutting program were investigated. The total column-switching program was suggested. The system has been successfully operated for more than one year with good resolution, stability and precision (RSD < 5%) in analyzing trace tetrahydrofuran (0-250 x 10(-6), V/V) for industrial process control in the rubber production facility.
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Affiliation(s)
- X Lu
- National Chromatographic R. & A. Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116011, China
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Serebrisky D, Teper AA, Huang CK, Lee SY, Zhang TF, Schofield BH, Kattan M, Sampson HA, Li XM. CpG oligodeoxynucleotides can reverse Th2-associated allergic airway responses and alter the B7.1/B7.2 expression in a murine model of asthma. J Immunol 2000; 165:5906-12. [PMID: 11067952 DOI: 10.4049/jimmunol.165.10.5906] [Citation(s) in RCA: 94] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CpG oligodeoxynucleotides (CpG-ODN) administered during Ag sensitization or before Ag challenge can inhibit allergic pulmonary inflammation and airway hyperreactivity in murine models of asthma. In this study, we investigated whether CpG-ODN can reverse an ongoing allergic pulmonary reaction in a mouse model of asthma. AKR mice were sensitized with conalbumin followed by two intratracheal challenges at weekly intervals. CpG-ODN was administered 24 h after the first Ag challenge. CpG-ODN administration reduced Ag-specific IgE levels, bronchoalveolar lavage fluid eosinophils, mucus production, and airway hyperreactivity. We found that postchallenge CpG-ODN treatment significantly increased IFN-gamma concentrations and decreased IL-13, IL-4, and IL-5 concentrations in bronchoalveolar lavage fluids and spleen cell culture supernatants. Postchallenge CpG-ODN treatment also increased B7.1 mRNA expression and decreased B7.2 mRNA expression in lung tissues. These results suggest that CpG-ODN may have potential for treatment of allergic asthma by suppressing Th2 responses during IgE-dependent allergic airway reactions. The down-regulation of Th2 responses by CPG-ODN may be associated with regulation of the costimulatory factors B7.1 and B7.2.
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Affiliation(s)
- D Serebrisky
- Department of Pediatrics, Mount Sinai School of Medicine, New York, NY 10029, USA
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Li XM, Huang CK, Zhang TF, Teper AA, Srivastava K, Schofield BH, Sampson HA. The chinese herbal medicine formula MSSM-002 suppresses allergic airway hyperreactivity and modulates TH1/TH2 responses in a murine model of allergic asthma. J Allergy Clin Immunol 2000; 106:660-8. [PMID: 11031336 DOI: 10.1067/mai.2000.110102] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.0] [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: 11/22/2022]
Abstract
BACKGROUND Asthma is a major public health problem worldwide, and the morbidity and mortality of asthma have increased in the past two decades. The reputed efficacy, low cost, and relative absence of side effects of traditional Chinese medicines (TCMs) have led to increasing interest in the use of TCMs for the treatment of asthma in Western countries. However, there are few well-controlled scientific studies on the efficacy, safety, and mechanisms of action of TCMs used to treat asthma. OBJECTIVE The goal of this study was to investigate the effects of the Chinese herbal medicine formula MSSM-002, derived from TCMs used to treat allergic asthma, on a well-characterized mouse model of allergic asthma. METHODS Mice sensitized intraperitoneally and challenged intratracheally with conalbumin were treated with MSSM-002 24 hours after the first intratracheal challenge. Dexamethasone-treated, saline solution sham-treated, and naive mice served as controls. The effects of MSSM-002 on allergic airway hyperreactivity, inflammation, antigen-specific antibody production, lung histologic features, and cytokine profiles were evaluated. RESULTS MSSM-002 treatment virtually eliminated airway hyperreactivity and markedly reduced the total number of cells and the percent eosinophils in bronchoalveolar lavage fluids compared with the sham-treated group. Lung histologic features showed that MSSM-002 reduced inflammation and mucus production. These effects were equivalent to the effects of dexamethasone, but in contrast to the overall immunosuppressive effects of dexamethasone MSSM-002 treatment decreased antigen-specific IgE, IL-4, IL-5, and IL-13 levels without suppressing IgG2a and IFN-gamma synthesis. CONCLUSION MSSM-002 exhibits anti-airway hyperresponsiveness, anti-airway inflammation, and immunoregulatory effects on T(H)1/T(H)2 responses, which may be useful for treatment of allergic asthma.
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Affiliation(s)
- X M Li
- Department of Pediatrics, Mt Sinai School of Medicine, New York, NY 10029-6574, USA
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Song YY, Xu YZ, Weng SF, Wang LB, Li XF, Zhang TF, Wu JG. Biological effects of rare earth protein complexes: influence of lanthanide ions Eu3+, Tb3+ on secondary structure of calmodulins. Biospectroscopy 1999; 5:371-7. [PMID: 10604289 DOI: 10.1002/(sici)1520-6343(1999)5:6<371::aid-bspy6>3.0.co;2-#] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The secondary structure of four kinds of calmodulins (CaMs; i.e., Brassica campestris pollen CaM, bovine brain CaM, earthworm calcium binding protein, and earthworm new calcium binding protein) in thin films are determined by the FTIR resolution enhanced technique and curve fitting. The variation in the secondary structure of CaM upon its binding with Ca2+, Eu3+, and Tb3+, the assay of phosphodiesterase enzyme, and sodium dodecyl sulfate-polyacrylamide gel electrophoresis are also investigated. The effect of lanthanide ions on the conformation of CaM are described.
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Affiliation(s)
- Y Y Song
- Department of Chemistry, State Key Laboratory of Rare Earth Material Chemistry and Applications, Peking University, Beijing, People's Republic of China
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Shi XP, Zhang TF. [Current status and prospects on traditional Chinese medicine combined with chemotherapy in the treatment of leukemia]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1994; 14:446-8. [PMID: 7950235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Zhang TF, Qin L. [Progress in the study of protein kinase C]. Sheng Li Ke Xue Jin Zhan 1993; 24:123-6. [PMID: 8211061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Abstract
Pyruvate oxidase is an Escherichia coli peripheral membrane flavoprotein which catalyzes the oxidative decarboxylation of pyruvate to acetate and CO2. Pyruvate oxidase, like several other peripheral membrane enzymes, can be activated either by binding to lipid amphiphiles or by limited protease digestion. This paper reports a rapid and convenient method for effecting the large-scale purification of pyruvate oxidase from crude enzyme preparations using a Triton X-114 phase separation technique. It appears likely that this purification procedure can be used successfully with the family of enzymes which respond to both lipid and protease activation.
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Affiliation(s)
- T F Zhang
- Roger Adams Laboratory, Department of Biochemistry, University of Illinois, Urbana 61801
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Abstract
The alpha-peptide of pyruvate oxidase is a 23 residue peptide which is cleaved from the carboxy terminus of the enzyme during proteolytic activation by chymotrypsin (M. Recny et al. (1985) J. Biol. Chem. 260, 14287-14291). Cleavage of alpha-peptide results in the loss of the high affinity lipid-binding site in the enzyme. The beta-peptide of pyruvate oxidase is a 101 residue peptide which also is cleaved from the carboxy terminus of pyruvate oxidase. Cleavage of the beta-peptide from pyruvate oxidase results in the inactivation of the enzyme. The beta-peptide includes the alpha-peptide amino acid sequences at its carboxyl terminus. We now report on the binding of the alpha- and beta-peptides to phospholipid vesicles. Both peptides bind with equal and high affinity to phosphatidylcholine vesicles. We conclude from these results that the alpha-peptide furnishes the membrane-binding site which plays the physiologically important role in the activation of this peripheral membrane enzyme.
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