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Huang L, Luo X, Shao J, Yan H, Qiu Y, Ke P, Zheng W, Xu B, Li W, Sun D, Cao D, Chen C, Zhuo F, Lin X, Tang F, Bao B, Zhou Y, Zhang X, Li H, Li J, Wan D, Yang L, Chen Y, Zhong Q, Gu X, Liu J, Huang L, Xie R, Li X, Xu Y, Luo Z, Liao M, Wang H, Sun L, Li H, Lau GW, Duan C. Epidemiology and characteristics of the dengue outbreak in Guangdong, Southern China, in 2014. Eur J Clin Microbiol Infect Dis 2015; 35:269-77. [DOI: 10.1007/s10096-015-2540-5] [Citation(s) in RCA: 20] [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] [Received: 07/05/2015] [Accepted: 11/29/2015] [Indexed: 01/27/2023]
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Jiang J, Tang F, Pan XC, Liu HM, Niu XH, Wang YX, Xu DF, Yang HF, Xie BP, Song FQ, Dudin P, Kim TK, Hoesch M, Das PK, Vobornik I, Wan XG, Feng DL. Signature of Strong Spin-Orbital Coupling in the Large Nonsaturating Magnetoresistance Material WTe2. Phys Rev Lett 2015; 115:166601. [PMID: 26550888 DOI: 10.1103/physrevlett.115.166601] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Indexed: 06/05/2023]
Abstract
We report the detailed electronic structure of WTe2 by high resolution angle-resolved photoemission spectroscopy. We resolved a rather complicated Fermi surface of WTe2. Specifically, there are in total nine Fermi pockets, including one hole pocket at the Brillouin zone center Γ, and two hole pockets and two electron pockets on each side of Γ along the Γ-X direction. Remarkably, we have observed circular dichroism in our photoemission spectra, which suggests that the orbital angular momentum exhibits a rich texture at various sections of the Fermi surface. This is further confirmed by our density-functional-theory calculations, where the spin texture is qualitatively reproduced as the conjugate consequence of spin-orbital coupling. Since the spin texture would forbid backscatterings that are directly involved in the resistivity, our data suggest that the spin-orbit coupling and the related spin and orbital angular momentum textures may play an important role in the anomalously large magnetoresistance of WTe2. Furthermore, the large differences among spin textures calculated for magnetic fields along the in-plane and out-of-plane directions also provide a natural explanation of the large field-direction dependence on the magnetoresistance.
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Affiliation(s)
- J Jiang
- State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433, China
| | - F Tang
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, People's Republic of China
| | - X C Pan
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, People's Republic of China
| | - H M Liu
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, People's Republic of China
| | - X H Niu
- State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433, China
| | - Y X Wang
- State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433, China
| | - D F Xu
- State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433, China
| | - H F Yang
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese Academy of Sciences, Shanghai 200050, China
| | - B P Xie
- State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433, China
| | - F Q Song
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, People's Republic of China
| | - P Dudin
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - T K Kim
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - M Hoesch
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - P Kumar Das
- CNR-IOM, TASC Laboratory AREA Science Park-Basovizza, 34149 Trieste, Italy
- International Centre for Theoretical Physics, Strada Costiera 11, 34100 Trieste, Italy
| | - I Vobornik
- CNR-IOM, TASC Laboratory AREA Science Park-Basovizza, 34149 Trieste, Italy
| | - X G Wan
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093, People's Republic of China
| | - D L Feng
- State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433, China
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Tang F, Lane S, Korsak A, Paton JFR, Gourine AV, Kasparov S, Teschemacher AG. Lactate-mediated glia-neuronal signalling in the mammalian brain. Nat Commun 2015; 5:3284. [PMID: 24518663 PMCID: PMC3926012 DOI: 10.1038/ncomms4284] [Citation(s) in RCA: 249] [Impact Index Per Article: 27.7] [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: 08/06/2013] [Accepted: 01/20/2014] [Indexed: 12/12/2022] Open
Abstract
Astrocytes produce and release L-lactate as a potential source of energy for neurons. Here we present evidence that L-lactate, independently of its caloric value, serves as an astrocytic signalling molecule in the locus coeruleus (LC). The LC is the principal source of norepinephrine to the frontal brain and thus one of the most influential modulatory centers of the brain. Optogenetically activated astrocytes release L-lactate, which excites LC neurons and triggers release of norepinephrine. Exogenous L-lactate within the physiologically relevant concentration range mimics these effects. L-lactate effects are concentration-dependent, stereo-selective, independent of L-lactate uptake into neurons and involve a cAMP-mediated step. In vivo injections of L-lactate in the LC evokes arousal similar to the excitatory transmitter, L-glutamate. Our results imply the existence of an unknown receptor for this ‘glio-transmitter’. The astrocytic release of the metabolite L-lactate is implicated in modulating neuronal activity in the brain. Here, the authors show that L-lactate released from astrocytes excites noradrenergic neurons in the locus coeruleus and triggers the release of noradrenaline, increasing network excitability.
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Affiliation(s)
- F Tang
- 1] School of Physiology and Pharmacology, University of Bristol, Bristol BS8 1TD, UK [2]
| | - S Lane
- 1] School of Physiology and Pharmacology, University of Bristol, Bristol BS8 1TD, UK [2]
| | - A Korsak
- Department of Neuroscience, Physiology & Pharmacology, University College London, London WC1E 6BT, UK
| | - J F R Paton
- School of Physiology and Pharmacology, University of Bristol, Bristol BS8 1TD, UK
| | - A V Gourine
- Department of Neuroscience, Physiology & Pharmacology, University College London, London WC1E 6BT, UK
| | - S Kasparov
- School of Physiology and Pharmacology, University of Bristol, Bristol BS8 1TD, UK
| | - A G Teschemacher
- School of Physiology and Pharmacology, University of Bristol, Bristol BS8 1TD, UK
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Xu P, Li X, Tang F, Liu YH, Kou X, Zhao ML, Li B, Guo L, Liu XG, Zhao Q. Seroprevalence and risk factors for Toxoplasma gondii in sheep and goats in Jinzhou, Northeastern China. Trop Biomed 2015; 32:563-567. [PMID: 26695220] [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: 06/05/2023]
Abstract
In the present study, serum samples from 402 sheep and 216 goats were collected from 5 counties in Jinzhou from August to October 2012 and antibodies to Toxoplasma gondii were detected by modified agglutination test (MAT). Overall, 104 (16.8%) had antibodies to T. gondii with antibody titres of 1:25 to 1:800. Seropositive samples were distributed in all the 5 counties and seroprevalences of T. gondii varied significantly with flock size, age and rearing system, but not with breed, gender and farm location. The seroprevalences in small farms (18.3%, 95/518, 95% confidence interval [CI], 15.0-21.7%) were statistically higher than that in large farms (9%, 9/100, 95% CI, 3.4-14.6%) (P < 0.05), older animals were statistically higher than that in younger animals (P < 0.01). The prevalence in extensively and semi intensively raised samples was statistically higher than that in intensively raised animals (P < 0.01). Small flock size and extensive rearing system are the potential risk factors for the prevalence of Toxoplasma infection in sheep and goats in Jinzhou. This is the first report of T. gondii infection in sheep and goats in Jinzhou, northeastern China, and of an association of seropositivity to T. gondii and the risk factors.
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Affiliation(s)
- P Xu
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - X Li
- Jinzhou Center for Animal Disease Control and Prevention, Jinzhou, Liaoning Province 121004, P.R. China
| | - F Tang
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - Y H Liu
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - X Kou
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - M L Zhao
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - B Li
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - L Guo
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - X G Liu
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - Q Zhao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, P.R. China
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Fu J, Ai J, Jin M, Jiang C, Zhang J, Shi C, Lin Q, Yuan Z, Qi X, Bao C, Tang F, Zhu Y. Emergence of a new GII.17 norovirus variant in patients with acute gastroenteritis in Jiangsu, China, September 2014 to March 2015. ACTA ACUST UNITED AC 2015; 20. [PMID: 26111236 DOI: 10.2807/1560-7917.es2015.20.24.21157] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
From September 2014 to March 2015, 23 outbreaks of norovirus (NoV) acute gastroenteritis occurred in Jiangsu, China. Partial sequencing of the NoV capsid gene suggested that 16 of the 23 outbreaks were related to a new GII.17 variant. This variant was first detected in sporadic specimens in October 2014, and became predominant in February 2015. Analysis of the RNA-dependent RNA polymerase (RdRp), and complete capsid including the protruding domain P2 sequences confirmed this GII.17 variant as distinct from previously identified GII variants.
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Affiliation(s)
- J Fu
- Key Lab of Enteric Pathogenic Microbiology, Ministry of Health, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
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Round WH, Stefanoyiannis AP, Ng KH, Rodriguez LV, Thayalan K, Han Y, Tang F, Fukuda S, Srivastava R, Krisanachinda A, Shiau AC, Deng X. AFOMP Policy No 5: career progression for clinical medical physicists in AFOMP countries. Australas Phys Eng Sci Med 2015; 38:217-21. [DOI: 10.1007/s13246-015-0355-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 03/30/2015] [Indexed: 10/23/2022]
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Xue G, Zippelius A, Wicki A, Mandala M, Tang F, Massi D, Hemmings BA. Integrated Akt/PKB Signaling in Immunomodulation and Its Potential Role in Cancer Immunotherapy. J Natl Cancer Inst 2015; 107:djv171. [DOI: 10.1093/jnci/djv171] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 05/22/2015] [Indexed: 12/17/2022] Open
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Yang Y, Zhang Y, Fang L, Halloran ME, Ma M, Liang S, Kenah E, Britton T, Chen E, Hu J, Tang F, Cao W, Feng Z, Longini IM. Household transmissibility of avian influenza A (H7N9) virus, China, February to May 2013 and October 2013 to March 2014. ACTA ACUST UNITED AC 2015; 20:21056. [PMID: 25788253 DOI: 10.2807/1560-7917.es2015.20.10.21056] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
To study human-to-human transmissibility of the avian influenza A (H7N9) virus in China, household contact information was collected for 125 index cases during the spring wave (February to May 2013), and for 187 index cases during the winter wave (October 2013 to March 2014). Using a statistical model, we found evidence for human-to-human transmission, but such transmission is not sustainable. Under plausible assumptions about the natural history of disease and the relative transmission frequencies in settings other than household, we estimate the household secondary attack rate (SAR) among humans to be 1.4% (95% CI: 0.8 to 2.3), and the basic reproductive number R0 to be 0.08 (95% CI: 0.05 to 0.13). The estimates range from 1.3% to 2.2% for SAR and from 0.07 to 0.12 for R0 with reasonable changes in the assumptions. There was no significant change in the human-to-human transmissibility of the virus between the two waves, although a minor increase was observed in the winter wave. No sex or age difference in the risk of infection from a human source was found. Human-to-human transmissibility of H7N9 continues to be limited, but it needs to be closely monitored for potential increase via genetic reassortment or mutation.
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Affiliation(s)
- Y Yang
- Department of Biostatistics and Emerging Pathogens Institute, University of Florida, Gainesville, Florida, United States
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Abstract
Hepcidin is a key protein of iron metabolism, which may play an important role in the prognosis of patients with chronic renal failure on maintenance hemodialysis. The purpose of this study was to investigate the relationship between the prognosis of maintenance hemodialysis patients and serum hepcidin level. We enrolled 60 patients on maintenance hemodialysis and 30 healthy controls from March 2012 to December 2012 in our hospital. Peripheral blood samples were collected to determine hepcidin by an ELISA method. Hepcidin levels of hemodialysis patients were significantly higher than those of the healthy control group. Hepcidin level was positively correlated with the degree of anemia in the dialysis group. Therefore, we conclude that hepcidin level is significantly increased in patients with chronic renal failure on maintenance hemodialysis and that increased hepcidin seriously affects the prognosis of chronic renal failure.
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Affiliation(s)
- P Zhang
- The Department of Nephrology, 452nd Hospital of the Chinese, People's Liberation Army, Chengdu, China
| | - L-N Yang
- The Department of Nephrology, 452nd Hospital of the Chinese, People's Liberation Army, Chengdu, China
| | - G Wang
- The Department of Nephrology, 452nd Hospital of the Chinese, People's Liberation Army, Chengdu, China
| | - F-E Li
- The Department of Nephrology, 452nd Hospital of the Chinese, People's Liberation Army, Chengdu, China
| | - F Tang
- The Department of Nephrology, 452nd Hospital of the Chinese, People's Liberation Army, Chengdu, China
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Yao X, Tang F, Yu M, Zhu H, Chu Z, Li M, Liu W, Hua J, Peng S. Expression profile of Nanos2 gene in dairy goat and its inhibitory effect on Stra8 during meiosis. Cell Prolif 2014; 47:396-405. [PMID: 25195564 DOI: 10.1111/cpr.12128] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 06/15/2014] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVES Nanos2, an RNA-binding protein, belongs to the Nanos gene-coding family and contains two CCHC zinc-finger motifs. In mouse, it plays a pivotal role in male germ cell development, and self-renewal of spermatogonial stem cells. However, little is known of its expression pattern and functions in dairy goat testis. MATERIALS AND METHODS Immunohistochemistry and quantitative reverse transcription-polymerase chain reaction (qRT-PCR) were used to generate the expression profile of Nanos2 in dairy goat testis. Furthermore, its overexpression effects on male germline stem cells (mGSCs) were studied using qRT-PCR, immunofluorescence, dual-luciferase reporter assay and western blotting. RESULTS Nanos2 is a conservative gene expressed widely in various tissues, especially in pancreas, and it displays higher expression in adult testes than in other age groups. Overexpression of Nanos2 significantly downregulated meiosis-related genes, including Stra8 and Scp3, which induced inhibition of meiosis. Results from dual-luciferase reporter assay and western blotting indicated that Nanos2 directly downregulated Stra8 in goat GmGSCs. CONCLUSIONS Taken together, these results suggest that Nanos2 plays an important role in spermatogonia and that its overexpression restrained meiosis in the dairy goat.
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Affiliation(s)
- X Yao
- College of Veterinary Medicine, Northwest Agriculture and Forestry University, Yangling, 712100, China; Shaanxi Stem Cell Engineering and Technology Research Center, Northwest Agriculture and Forestry University, Yangling, 712100, China
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Abstract
Anemia in patients with chronic renal insufficiency (CRI) is related to the chronic inflammatory state, low iron absorption rate, and low utilization rate. As a key protein for iron metabolism, hepcidin plays an important role in CRI anemia. The study aimed to determine the correlation between hepcidin level and renal anemia. Ninety CRI anemia patients treated in our hospital from February 2012 to December 2012 were enrolled in the study to compare with a healthy control group of 40 cases by measuring the hepcidin level and analyzing the correlation between hepcidin level and CRI anemia. The hepcidin level was significantly higher in the CRI anemia group than the control group; there was a positive correlation between hepcidin level and serum ferritin as well as IL-6 level. Hepcidin level was significantly related to degree of anemia, indicating that an increase in hepcidin level will result in anemia.
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Affiliation(s)
- L-N Yang
- The Department of Nephrology, 452nd Hospital of the Chinese People's Liberation Army, Chengdu, China
| | - P Zhang
- The Department of Nephrology, 452nd Hospital of the Chinese People's Liberation Army, Chengdu, China
| | - F Tang
- The Department of Nephrology, 452nd Hospital of the Chinese People's Liberation Army, Chengdu, China
| | - G Wang
- The Department of Nephrology, 452nd Hospital of the Chinese People's Liberation Army, Chengdu, China
| | - F-E Li
- The Department of Nephrology, 452nd Hospital of the Chinese People's Liberation Army, Chengdu, China
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Wong P, Cheung M, WS O, Tang F. Intermedin inhibits norepinephrine-induced contraction of rat seminal vesicle. Asian Pacific Journal of Reproduction 2014. [DOI: 10.1016/s2305-0500(14)60022-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Zhang J, Dou Y, Zhong Z, Su J, Xu D, Tang F, Zhang X, Zhao Y, Zeng X, Zhang F, You X. Clinical characteristics and therapy exploration of active human cytomegalovirus infection in 105 lupus patients. Lupus 2014; 23:889-97. [PMID: 24836584 DOI: 10.1177/0961203314532560] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [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: 05/18/2013] [Accepted: 03/14/2014] [Indexed: 11/16/2022]
Abstract
Systemic lupus erythematosus (SLE) has protean clinical manifestations of varying severity over the course of its onset, exacerbation, remission and flare that could often pose significant challenges for clinicians in their decision making as to whether to treat aggressively or to look for concurrent conditions such as infection with opportunistic pathogens. Human cytomegalovirus (HCMV) is one of those pathogens and is frequently encountered in our daily management of lupus patients. To investigate the clinical characteristics and therapeutic options of active HCMV infection in patients with SLE, we retrospectively reviewed clinical data of 105 inpatients in our department of Rheumatology and Clinical Immunology of Peking Union Medical College Hospital (PUMCH) diagnosed with both SLE and active HCMV infection from January 2006 to January 2012. Three groups were designated that included 42 cases of HCMV triggering SLE, 31 cases of HCMV exacerbating SLE, and 32 cases of HCMV mimicking SLE flare based on the relationship of HCMV infection and SLE. 1) Hematocytopenia (81%), fever (73.3%) and liver dysfunction (54.3%) were the most common clinical manifestations. The differences among the three groups with regard to butterfly erythema, cutaneous vasculitis, arthritis, serositis, central nervous system involvement and renal involvement were statistically significant (p < 0.05). 2) Positive rate of HCMV-pp65, compared with HCMV-IgM and HCMV-DNA, was the highest (84.9%) in patients with SLE and active HCMV infection. 3) Following 14-21 days of inductive treatment with ganciclovir, a total of 26 out of 56 patients were still positive with HCMV-IgM (nine of 19, 47.6%) and pp65 (17/37, 45.9%). Among them, seven cases suffered HCMV relapses in three months with six cases of sustained HCMV-pp65 antigenemia. In conclusion, hematocytopenia, fever and liver dysfunction should remind us to consider HCMV infection. Butterfly erythema, cutaneous vasculitis, arthritis, serositis, central nervous system involvement and renal lesion were relatively characteristic symptoms of lupus activity. HCMV-pp65 is a sensitive indicator to guide antiviral therapy. Induction therapy using ganciclovir with a duration of 14∼21 days is not sufficient, and continued HCMV-pp65 positivity may require prolonged antiviral treatment in lupus patients.
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Affiliation(s)
- J Zhang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China Department of Immunology and Rheumatology, LiHuili Hospital, Medical School of Ningbo University, Ningbo, China
| | - Y Dou
- Department of Clinical Lab, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Z Zhong
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - J Su
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - D Xu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - F Tang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X Zhang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Y Zhao
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X Zeng
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - F Zhang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X You
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
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Li Y, Lu J, Peng Z, Tan G, Liu N, Huang D, Zhang Z, Duan C, Tang X, Tang F. P0033 N,N′-dinitrosopiperazine-mediated AGR2 in metastasis of nasopharyngeal carcinoma. Eur J Cancer 2014. [DOI: 10.1016/j.ejca.2014.03.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Peng Z, Li Y, Tan G, Tang F. P0035 N,N′-dinitrosopiperazine involvement in metastasis of nasopharyngeal carcinoma by mediation of protein phosphorylation. Eur J Cancer 2014. [DOI: 10.1016/j.ejca.2014.03.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Liao SB, Cheung KH, Cheung MPL, Wong PF, O WS, Tang F. Adrenomedullin increases the short-circuit current in the rat prostate: Receptors, chloride channels, the effects of cAMP and calcium ions and implications on fluid secretion. Andrology 2014; 2:474-80. [PMID: 24711244 DOI: 10.1111/j.2047-2927.2014.00189.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2013] [Revised: 12/22/2013] [Accepted: 01/12/2014] [Indexed: 12/01/2022]
Abstract
In this study, we have investigated the effects of adrenomedullin on chloride and fluid secretion in the rat prostate. The presence of adrenomedullin (ADM) in rat prostate was confirmed using immunostaining, and the molecular species was determined using gel filtration chromatography coupled with an enzyme-linked assay for ADM. The effects of ADM on fluid secretion were studied by short-circuit current technique in a whole mount preparation of the prostate in an Ussing chamber. The results indicated that the ADM level was higher in the ventral than the dorso-lateral prostate and the major molecular species was the active peptide. ADM increased the short-circuit current through both the cAMP- and calcium-activated chloride channels in the ventral lobe, but only through the calcium-activated channels in the dorso-lateral lobe. These stimulatory effects were blocked by the calcitonin gene-related peptide (CGRP) receptor antagonist, hCGRP8-37. We conclude that ADM may regulate prostatic fluid secretion through the chloride channels, which may affect the composition of the seminal plasma bathing the spermatozoa and hence fertility.
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Affiliation(s)
- S B Liao
- Department of Anatomy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; Department of Physiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; Department of Obstetrics and Gynecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
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Querri A, Ohkado A, Yoshimatsu S, Agujo P, Tang F, Medina A, Vianzon R, Shimouchi A. Strengthening linkage on tuberculosis control in urban marginalized communities in metro Manila. Int J Infect Dis 2014. [DOI: 10.1016/j.ijid.2014.03.1060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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68
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Tang F, Yao X, Zhu H, Mu H, Niu Z, Yu M, Yang C, Peng S, Li G, Hua J. Expression pattern of Ngn3 in dairy goat testis and its function in promoting meiosis by upregulating Stra8. Cell Prolif 2013; 47:38-47. [PMID: 24450812 DOI: 10.1111/cpr.12077] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Accepted: 09/19/2013] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES Ngn3 is a typical transcription factor and marker of differentiating spermatogonial stem cells (SSCs) in mouse, belonging to the basic helix-loop-helix (bHLH) family. Its gene is specifically expressed in A type spermatogonia in mouse testis, thus plays a critical role in controlling differentiation of SSCs. However, roles of Ngn3 and its protein in dairy goat testis remain unknown. MATERIALS AND METHODS Testis development and expression patterns of Ngn3 were analysed by immunofluorescence and quantitative reverse transcription-polymerase chain reaction (QRT-PCR) in the dairy goat. Furthermore, effects of its overexpression on male germline stem cells (mGSCs) were evaluated by QRT-PCR, immunofluorescence, luciferase reporter assay and western blotting. RESULTS Revealed that Ngn3 was expressed more highly during puberty and in the adult than in testis of other ages. Overexpression of Ngn3 promoted expression of meiosis-related gene Stra8 and stem-cell differentiation marker CD117, but suppressed expression of Plzf, a classical marker of SSCs. Furthermore, Ngn3 did not promote expression of Stra8 directly as shown in transcription and translation levels detected by luciferase reporter assay and western blotting. CONCLUSIONS Taken together, these results suggest that Ngn3 plays an important role in spermatogenesis and that overexpression of Ngn3 can promote meiosis in testis of the dairy goat.
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Affiliation(s)
- F Tang
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Key Lab for Animal Biotechnology of Agriculture Ministry of China, Northwest A&F University, Yangling, Shaanxi, 712100, China
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69
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Liu W, Yang K, Qi X, Xu K, Ji H, Ai J, Ge A, Wu Y, Li Y, Dai Q, Liang Q, Bao C, Bergquist R, Tang F, Zhu Y. Spatial and temporal analysis of human infection with avian influenza A(H7N9) virus in China, 2013. Euro Surveill 2013; 18. [DOI: 10.2807/1560-7917.es2013.18.47.20640] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Binary file ES_Abstracts_Final_ECDC.txt matches
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Affiliation(s)
- W Liu
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - K Yang
- Department of Schistosomiasis Control, Jiangsu Institute of Parasitic Diseases, Wuxi, China
| | - X Qi
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - K Xu
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - H Ji
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - J Ai
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - A Ge
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Y Wu
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Y Li
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Q Dai
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Q Liang
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - C Bao
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | | | - F Tang
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Y Zhu
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
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Sun Y, Xu L, Liu D, Zhang X, Han W, Wang Y, Chen H, Chen Y, Wang F, Wang J, Ji Y, Tang F, Liu K, Huang XJ. Incidence of invasive fungal disease after unmanipulated haploidentical stem cell transplantation was significantly higher than that after HLA-matched sibling transplantation. Clin Microbiol Infect 2013; 19:1029-34. [DOI: 10.1111/1469-0691.12120] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 11/02/2012] [Accepted: 11/25/2012] [Indexed: 01/21/2023]
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71
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Liao SB, Cheung KH, Cheung MPL, To YT, O WS, Tang F. Adrenomedullin increased the short-circuit current in the pig oviduct through chloride channels via the CGRP receptor: mediation by cAMP and calcium ions but not by nitric oxide. Biol Reprod 2013; 89:99. [PMID: 23966326 DOI: 10.1095/biolreprod.113.109934] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [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: 01/23/2023] Open
Abstract
The oviduct serves as a site for the fertilization of the ovum and the transport of the conceptus down to the uterus for implantation. In this study, we investigated the presence of adrenomedullin (ADM) and its receptor component proteins in the pig oviduct. The effect of ADM on oviductal secretion, the specific receptor, and the mechanisms involved were also investigated. The presence of ADM and its receptor component proteins in the pig oviduct were confirmed using immunostaining. Short-circuit current (I(sc)) technique was employed to study chloride ion secretion in the oviductal epithelium. ADM increased I(sc) through cAMP- and calcium-activated chloride channels, and this effect could be inhibited by the CGRP receptor antagonist, hCGRP8-37. In contrast, the nitric oxide synthase inhibitor, L-NG-nitroarginine methyl ester (L-NAME), could not block the effect of ADM on I(sc). In summary, ADM may increase oviductal fluid secretion via chloride secretion independent of the nitric oxide pathway for the transport of sperm and the conceptus.
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Affiliation(s)
- S B Liao
- Department of Anatomy, Li Ka Shing Faculty of Medicine, University of Hong Kong, Pokfulam, Hong Kong, China
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72
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Wu J, Zhu H, Song W, Li M, Liu C, Li N, Tang F, Mu H, Liao M, Li X, Guan W, Li X, Hua J. Identification of Conservative MicroRNAs in Saanen Dairy Goat Testis Through Deep Sequencing. Reprod Domest Anim 2013; 49:32-40. [DOI: 10.1111/rda.12217] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 06/20/2013] [Indexed: 01/28/2023]
Affiliation(s)
- J Wu
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - H Zhu
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - W Song
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - M Li
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - C Liu
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - N Li
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - F Tang
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - H Mu
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - M Liao
- College of Life Science Northwest A & F University Yangling China
| | - X Li
- Institute of Animal Science Chinese Academy of Agricultural Sciences Beijing China
| | - W Guan
- Institute of Animal Science Chinese Academy of Agricultural Sciences Beijing China
| | - X Li
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - J Hua
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
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Ai J, Huang Y, Xu K, Ren D, Qi X, Ji H, Ge A, Dai Q, Li J, Bao C, Tang F, Shi G, Shen T, Zhu Y, Zhou M, Wang H. Case-control study of risk factors for human infection with influenza A(H7N9) virus in Jiangsu Province, China, 2013. Euro Surveill 2013; 18:20510. [PMID: 23827526 DOI: 10.2807/1560-7917.es2013.18.26.20510] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We describe a case-control study performed in Jiangsu, China, to evaluate risk factors for human infection with novel avian influenza A(H7N9) virus. Twenty-five cases and 93 controls matched by age, sex, and location were included in the study. Direct contact with poultry or birds in the two weeks before illness onset, chronic medical conditions (hypertension excluded), and environment-related exposures were significantly associated with A(H7N9) infection.
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Affiliation(s)
- J Ai
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, China
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74
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Zhang Y, Chen Z, Bao Y, Du Z, Li Q, Zhao Y, Tang F. Invasive neuroendocrine carcinoma of the breast: a prognostic research of 107 Chinese patients. Neoplasma 2013; 60:215-22. [PMID: 23259792 DOI: 10.4149/neo_2013_029] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Neuroendocrine carcinoma (NEC) of the breast, a distinct type of mammary carcinoma whose terminology was not proposed until 2003, has not been well recognized or studied. The aim of our study is to evaluate the clinicopathological features and outcomes of this type of tumor. We conducted a comparative study on 107 NEC patients and 475 invasive ductal carcinoma, not otherwise specified(IDC, NOS) patients from the Department of Pathology, Huashan Hospital, Fudan University, to determine the demographic, pathological, and clinical features at presentation, along with patient outcomes and prognostic factors. With an older age at presentation, NECs are more likely to be estrogen receptor(ER)/ progesterone receptor (PR) positive and human epidermal growth factor receptor 2 (HER-2) negative, and have a higher propensity for local recurrence and poorer overall survival(OS). Higher T classification, M classification, TNM stage, the expression of Ki67, and the absence of PR expression are prognostically of poorer OS and distant recurrence-free survival(DRFS). Distant metastasis is also a dependent prognostic factor. NEC of the breast is a distinct type of neoplasm with higher malignancy. Novel therapies such as the endocrine therapy should be explored and studies with larger case number and longer follow-up will be needed.
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Affiliation(s)
- Y Zhang
- Department of Pathology, Fudan University, Shanghai, China
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75
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Liao SB, Wong PF, Cheung BMY, Tang F. Effects of adrenomedullin on tumour necrosis factor alpha, interleukins, endothelin-1, leptin, and adiponectin in the epididymal fat and soleus muscle of the rat. Horm Metab Res 2013; 45:31-7. [PMID: 22956308 DOI: 10.1055/s-0032-1321879] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Adrenomedullin (ADM) is a peptide hormone, which participates in the development of metabolic syndrome. In this study, we have investigated the interaction of ADM and cytokines, endothelin-1 (EDN-1) and adipokines in the epididymal fat and the soleus muscle. Epididymal fat and soleus muscles from adult male Sprague-Dawley rat were incubated with ADM at concentration of 100 nM for the study of the gene expression and secretion of tumour necrosis factor (TNF-α), EDN-1, leptin, adiponectin, interleukin 1β (IL-1β), and IL-6. The effects of TNF-α and EDN-1 on ADM gene expression and secretion were also investigated. The results showed that ADM decreased the gene expression and protein secretion of TNF-α in both the epididymal fat and the soleus muscle and decreased IL-1β gene expression and secretion in the soleus muscle. It also decreased endothelin gene expression and adiponectin gene expression and release and increased IL-6 and leptin gene expression and secretion in the epididymal fat. These effects were effectively blocked by the calcitonin gene-related peptide (CGRP) receptor antagonist, hCGRP8-37, but not by the ADM receptor antagonist, hADM22-52. The reduction of inflammatory cytokines and EDN-1 may help to decrease insulin resistance and increase glucose uptake. As TNF-α also increases ADM levels in the epididymal fat and the soleus muscle and EDN-1 also increases ADM levels in the epididymal fat, they may form a feedback loop with ADM in these tissues. The increase in leptin and the decrease in adiponectin by ADM in the epididymal fat may have opposite effects on metabolism.
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Affiliation(s)
- S B Liao
- Department of Anatomy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
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76
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Kim H, Chen CT, Frisch H, Tang F, Kao CM. An Application of Micro-channel Plate Photomultiplier Tube to Positron Emission Tomography. Phys Procedia 2012; 37:1480-1487. [PMID: 23227135 DOI: 10.1016/j.phpro.2012.03.748] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We are developing a Time-of-Flight Positron Emission Tomography detector using flat panel micro-channel plate photomultiplier tubes (MCP PMT). The high-speed waveform sampling data acquisition is adopted to exploit the fast time response of MCP PMT efficiently by using transmission-line readout scheme. To demonstrate the feasibility of the proposed detector, prototype detector modules were built using Photonis XP85022 MCP PMT, transmission-line board (TL), and high-speed waveform sampling electronics equipped with DRS4 chips. The MCP/TL module was coupled to single LYSO crystal, and experimental tests have been conducted in a coincidence setup to measure the responses to 511 keV annihilation photon. The details of the prototype module, experimental setup, and the preliminary results are presented and discussed.
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Affiliation(s)
- H Kim
- Department of Radiology, University of Chicago, Chicago, IL 60637
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77
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Tang F, Zhuo W, He L, Zhao C, Xu Y. Preparation and emanation properties of an ion-exchanged solid thoron source. Radiat Prot Dosimetry 2012; 152:66-70. [PMID: 22908351 DOI: 10.1093/rpd/ncs190] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
For the calibration purpose of thoron ((220)Rn) measurements, solid sources with constant (220)Rn emanation are generally desired. In this study, Th(4+) in the thorium nitrate powder was successfully exchanged to the surfaces of sodium benzenesulphonate resins with a bead diameter of ∼0.5 mm by using the ion-exchange method. Tests of (220)Rn emanating from the ion-exchanged resin indicated that the emanation rates were nearly constant, provided both the air humidity and air temperature were controlled. As the resin can be easily prepared to be of various sizes and activities of sources, the ion-exchanged resin is considered as a promising standard source for calibrations of (220)Rn measurements.
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Affiliation(s)
- F Tang
- Shanghai Institute of Measurements and Testing Technology, 1500 Zhangheng Rd., Shanghai 201203, China
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78
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Querri A, Ohkado A, Poblete R, Agujo P, Tang F, Arias E, Medina A, Mantala M, Vianzon R, Lagahid J, Shimouchi A. Tuberculosis Diagnostic Committees' contribution to the National TB Program in Manila and Quezon Cities. Public Health Action 2012; 2:82-6. [PMID: 26392958 DOI: 10.5588/pha.12.0006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Accepted: 06/28/2012] [Indexed: 11/10/2022] Open
Abstract
SETTING The Philippines Tuberculosis Diagnostic Committees (TBDCs) were created to improve the quality of diagnosis of sputum smear-negative chest radiography suggestive of pulmonary tuberculosis (sn-PTB). OBJECTIVE To determine current TBDC activities, obstacles and possible solutions for improvements in the quality of diagnosis of sn-PTB in Manila City and Quezon City. DESIGN A descriptive review of TBDC Masterlist records and interviews with TBDC members using a semi-structured questionnaire. RESULTS A record review of nine of 10 TBDCs was conducted, with interviews of 33 of the 49 current members. During the second and third quarters of 2009, respectively 1142 and 1563 sn-PTB cases were evaluated by the TBDCs in both cities. Of these, 53% in Manila City and 65% in Quezon City were classified as active TB patients. There were significant variations in the percentage of patients recommended for anti-tuberculosis treatment by the TBDC. The participation of its members is based on their expressed commitment to program sustainability. CONCLUSION TBDC activities contribute to TB control in the Philippines by ensuring the judicious use of resources. Further research to assess the contributions of TBDCs in reducing diagnostic and treatment delays, and factors affecting the sustainability of the TBDCs, is recommended.
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Affiliation(s)
- A Querri
- Research Institute of Tuberculosis/Japan Anti-Tuberculosis Association Philippines, Inc., Manila, The Philippines
| | - A Ohkado
- Research Institute of Tuberculosis/Japan Anti-Tuberculosis Association Philippines, Inc., Manila, The Philippines
| | - R Poblete
- Research Institute of Tuberculosis/Japan Anti-Tuberculosis Association Philippines, Inc., Manila, The Philippines
| | - P Agujo
- Manila City Health Department, Manila, The Philippines
| | - F Tang
- Quezon City Health Department, Quezon, The Philippines
| | - E Arias
- Quezon City Health Department, Quezon, The Philippines
| | - A Medina
- Center for Health Development, National Capital Region, Department of Health, Mandaluyong, The Philippines
| | - M Mantala
- Research Institute of Tuberculosis/Japan Anti-Tuberculosis Association Philippines, Inc., Manila, The Philippines
| | - R Vianzon
- National Center for Disease Control and Prevention, Department of Health, Manila, The Philippines
| | - J Lagahid
- National Center for Disease Control and Prevention, Department of Health, Manila, The Philippines
| | - A Shimouchi
- Research Institute of Tuberculosis/Japan Anti-Tuberculosis Association Philippines, Inc., Manila, The Philippines
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Wang W, Zhang D, Lu F, Wang S, Tang F. The effect of span length to height ratio of reinforced concrete slabs on pressure-impulse diagram with multiple failure modes under blast loading. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20122604015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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80
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Zhao H, Chen S, Tang F, Jiang J, Li C, Miao H, Chen F, Fang W, Guo W. Morphological characteristics and chromosome behaviour in F1, F2 and BC1 progenies between Chrysanthemum × morifolium and Ajania pacifica. RUSS J GENET+ 2012. [DOI: 10.1134/s1022795412080108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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81
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Zhao H, Chen S, Tang F, Jiang J, Li C, Miao H, Chen F, Fang W, Guo W. Morphological characteristics and chromosome behaviour in F1, F2 and BC1 progenies between Chrysanthemum x morifolium and Ajania pacifica. Genetika 2012; 48:951-961. [PMID: 23035546] [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: 06/01/2023]
Abstract
The garden chrysanthemum (Chrysanthemum x morifolium) variety 'Aoyunhuoju' (2n = 6x = 54) was crossed as female with Ajania pacifica (2n = 10x = 90) to produce an intergeneric F1 hybrid, which was used both as a source ofF2 progeny and as a parent for a first back-cross with 'Aoyunhuoju'. The morphology of all of the F1 hybrids and hybrid derivatives was intermediate with respect to the two parents, although the BC1 progenies resembled 'Aoyunhuoju' more closely than any of the F1 and F2 progenies did. In the F1 hybrid, the density of silvery hairs on the lower leaf surface and along the margin of the leaf was lower than in A. pacifica, while that in the BC1 generation, this trait was less prominent than in the F1. The somatic chromosome number of the F1, F2 (with an exception of F2-6 of a mainly 63) and BC1 generations was 2n = 8x = 72, 2n = 8x = 72 and 2n = 7x = 63 respectively, as expected. The hybrids and their derivatives retained a variable degree of fertility. There was a low frequency of meiotic chromosome pairing failure in all three hybrid generations, with most of the chromosomes involved as bivalents. Some BC1 individuals show potential for commercialization thanks both to their flower shape and the inheritance of the silvery leaf trait from A. pacifica.
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Affiliation(s)
- H Zhao
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
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82
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Kang C, Tang F, Liu Y, Wu Y, Wang X. A portable gas sensor based on cataluminescence. LUMINESCENCE 2012; 28:313-7. [DOI: 10.1002/bio.2383] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 04/12/2012] [Accepted: 04/21/2012] [Indexed: 11/11/2022]
Affiliation(s)
- C Kang
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments and Mechanology; Tsinghua University; Beijing; 100084; PR China
| | - F Tang
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments and Mechanology; Tsinghua University; Beijing; 100084; PR China
| | - Y Liu
- Department of Chemistry; Tsinghua University; Beijing; 100084; PR China
| | - Y Wu
- Department of Chemistry; Tsinghua University; Beijing; 100084; PR China
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83
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Liao SB, Li HWR, Ho JC, Yeung WSB, Ng EHY, Cheung ANY, Tang F, O WS. Possible role of adrenomedullin in the pathogenesis of tubal ectopic pregnancy. J Clin Endocrinol Metab 2012; 97:2105-12. [PMID: 22456622 DOI: 10.1210/jc.2011-3290] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
CONTEXT Tubal ectopic pregnancy (tEP) is currently the leading cause of pregnancy-related deaths during the first trimester. Our current knowledge on the molecular pathogenesis is limited. OBJECTIVE The objective of the study was to find out the possible role of adrenomedullin (ADM) in the pathogenesis of tEP. DESIGN This was an experimental in vitro study on oviductal tissue. SETTING The study was conducted at a university teaching hospital. PATIENTS AND INTERVENTIONS Patients included those having oviducts removed surgically during salpingectomy for tEP or hysterectomy for benign gynecological conditions. Oviductal tissues were incubated in hormonal condition mimicking early pregnancy before used for in vitro experiments. MAIN OUTCOME MEASURES Plasma ADM concentration, oviductal expression of ADM and its receptors, ciliary beat frequency, smooth muscle contraction were measured. RESULTS The ciliary beat frequency and frequency of muscle contraction were lower in the oviducts from patients with tEP than those from simulated normal pregnancy. The plasma and oviductal tissue ADM levels were also lower. The decreases in ciliary beat and frequency of contraction were restored to normal after ADM treatment. CONCLUSIONS The results suggest that the lower ADM level in the oviducts of tEP may lead to the decrease in ciliary beating and muscle contraction, with the result that the embryo is retained and implanted in the oviduct. Our findings explain for the first time the etiology of tubal pregnancy on the basis of an impairment of the transport of the fertilized ovum resulting from an ADM deficiency and raise the possibility of using the plasma ADM level as a predictor for tubal ectopic pregnancy.
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Affiliation(s)
- S B Liao
- Department of Anatomy, The University of Hong Kong, First Floor, Laboratory Block, Faculty of Medicine Building, 21 Sassoon Road, Pokfulam, Hong Kong
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84
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Ohkado A, Poblete R, Mercader M, Querri A, Agujo P, Tang F, Medina A, Vianzon L, Lagahid J, Date T. Effectiveness of a training course on the quality assurance of chest radiography in the Philippines. Int J Tuberc Lung Dis 2012; 16:379-83. [PMID: 22640452 DOI: 10.5588/ijtld.11.0436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING Socio-economically underprivileged areas in urban settings in the Philippines. OBJECTIVE To determine the effectiveness of a training course in quality chest radiography (CXR). METHODS A descriptive, observational intervention study in which a questionnaire was administered to X-ray facility staff before training, and CXRs were reviewed before and after a training course for radiological technologists in Manila and Quezon City in the Philippines from 2009 to 2010. Course participants submitted six CXRs, each taken before and after training. Two senior radiological technologists blinded to the CXR profiles assessed the CXRs independently, using an assessment sheet developed by the Tuberculosis Coalition for Technical Assistance. RESULTS Forty radiological technologists from 10 facilities in Manila City and nine in Quezon City participated in the training. A total of 36 participants submitted the required set of CXRs. The assessment indicated that the training effectively improved the quality of CXRs in terms of identification marking (Wilcoxon matched-pairs signed-rank sum test, P = 0.00), contrast (P = 0.00), sharpness (P = 0.01), artefacts (P = 0.00), and the total score of the factors (P = 0.00). CONCLUSION The significant improvement in the total score of assessment factors strongly suggests a positive impact of the training course on improving the quality of CXRs.
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Affiliation(s)
- A Ohkado
- Research Institute of Tuberculosis/Japan Anti-Tuberculosis Association Philippines, Manila, The Philippines.
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85
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Abstract
In this study, the gene expression of adrenomedullin (Adm) in the peripheral tissues which include lung, adrenal, kidney, and heart during development was investigated in the rat. The preproadrenomedullin (preproAdm) mRNA and mRNAs of its related receptor components, calcitonin receptor-like receptor (Crlr), and receptor activity-modifying proteins (Ramp1, 2 and 3) of the lung, adrenal, kidney, and heart were measured by real-time RT-PCR and the ADM peptide measured by radioimmunoassay in 1-, 7-, 21-day-old rats and the adult rats. From day 1 to 21, preproAdm mRNA levels increased with age in the lung, the kidney, and the heart but decreased with age in the adrenal. ADM levels, however, increased with age in the lung but decreased with age in the kidney, the adrenal, and the heart. The preproAdm levels in the lung, in the kidney, and in the adrenal all increased in the adult rat. ADM peptide levels, however, decreased in the adult rat. Crlr and Ramp2 gene expression increased with age in the lung, in the kidney, and in the heart but decreased with age in the adrenal in the prepubertal rats. The results indicate that the levels of preproAdm mRNA, ADM peptide and its receptor component mRNAs in different tissues followed different patterns of changes during development.
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Affiliation(s)
- P F Wong
- Department of Physiology, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, China
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86
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Pernalete N, Tang F, Chang SM, Cheng FY, Vetter P, Stegemann M, Grantner J. Development of an evaluation function for eye-hand coordination robotic therapy. IEEE Int Conf Rehabil Robot 2012; 2011:5975423. [PMID: 22275624 DOI: 10.1109/icorr.2011.5975423] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This paper is the continuation of a work presented at ICORR 07, in which we discussed the possibility of improving eye-hand coordination in children diagnosed with this problem, using a robotic mapping from a haptic user interface to a virtual environment. Our goal is to develop, implement and refine a system that will assess and improve the eye-hand coordination and grip strength in children diagnosed with poor graphomotor skills. A detailed analysis of patters (e.g., labyrinths, letters and angles) was conducted in order to select three very distinguishable levels of difficulty that could be included in the system, and which would yield the greatest benefit in terms of assessment of coordination and strength issues as well as in training. Support algorithms (position, force, velocity, inertia and viscosity) were also developed and incorporated into the tasks in order to introduce general computer assistance to the mapping of the user's movements to the computer screen without overriding the user's commands to the robotic device. In order to evaluate performance (given by %accuracy and time) of the executed tasks, a sophisticated evaluation function was designed based on image analysis and edge detection algorithms. This paper presents the development of the haptic tasks, the various assistance algorithms, the description of the evaluation function and the results of a study implemented at the Motor Development Clinic at Cal Poly Pomona. The results (Accuracy and Time) of this function are currently being used as inputs to an Intelligent Decision Support System (described in), which in turn, suggests the next task to be executed by the subject based on his/her performance.
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Affiliation(s)
- N Pernalete
- California State Polytechnic University, Pomona, USA.
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87
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Kim H, Chen CT, Frisch H, Tang F, Kao CM. A Prototype TOF PET Detector Module Using a Micro-Channel Plate Photomultiplier Tube with Waveform Sampling. Nucl Instrum Methods Phys Res A 2012; 662:26-32. [PMID: 22347762 PMCID: PMC3279923 DOI: 10.1016/j.nima.2011.09.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We are exploring a large area flat panel micro-channel plate photomultiplier tube (MCP PMT) under development for an application to time-of-flight positron emission tomography (TOF PET). High speed waveform sampling with transmission-lines is adopted for reading out the signal with precise time and space information with a small number of low-power channels. As a demonstration of the concept, detector modules have been built using 2″×2″ Photonis Planacon MCP PMTs (XP85022) and prototype transmission-line (TL) boards. The signals from the MCP PMT through the transmission-lines are sampled by DRS4 evaluation boards running at 5 giga-samples per second (GS/s). The event information is extracted by processing the digitized waveforms. For experimental tests, a single 3×3×10 mm(3) LYSO crystal is optically coupled to each MCP PMT; the detector responses to 511 keV annihilation photon from a (22)Na source are measured using the data taken in coincidence mode. As a preliminary result, we obtain a position resolution of ∼2.8 mm (0.3 mm) (FWHM) along (perpendicular to) the transmission-line, ∼309 ps (FWHM) for coincidence time resolution, and ∼14% (FWHM) of energy resolution at 511 keV. This initial result gives a promise that the large area MCP PMT is applicable to TOF PET.
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Affiliation(s)
- H. Kim
- Department of Radiology, University of Chicago, Chicago, IL 60637
| | - C.-T. Chen
- Department of Radiology, University of Chicago, Chicago, IL 60637
| | - H. Frisch
- Enrico Fermi Institute, University of Chicago, Chicago, IL 60637
| | - F. Tang
- Enrico Fermi Institute, University of Chicago, Chicago, IL 60637
| | - C.-M. Kao
- Department of Radiology, University of Chicago, Chicago, IL 60637
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88
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Wang W, Zhang D, Lu F, Wang SC, Tang F. A new non-uniform blast load model for SDOF method of one-way reinforced concrete slab. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20122604016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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89
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Jiang Y, Tang F, Li Z, Cui L, He W. Critical role of γ4 chain in the expression of functional Vγ4Vδ1 T cell receptor of gastric tumour-infiltrating γδT lymphocytes. Scand J Immunol 2011; 75:102-8. [PMID: 21988289 DOI: 10.1111/j.1365-3083.2011.02634.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Vγ4Vδ1 T cell receptor (TCRγ4δ1)-expressing γδT cells were the most dominant subset in gastric tumour-infiltrating γδT cells (γδTIL) we recently analyzed. To study the essential roles of γ and δ chains in assembly and function of TCRγ4δ1, we sequenced and constructed them into lentiviral vectors for the reconstitution of TCRγ4δ1 using different modalities of transduction. We were able to efficiently reconstitute TCRγ4δ1 with functional activities when both γ4 and δ1 chains are coexpressed in TCR-negative J.RT3-T3.5 cells. However, the expression of δ1 chain is greatly diminished when γ4 expression is absent, suggesting that the coexpressing γ4 is critical in maintaining the folding and stability of δ1 product. To functionally study the reconstituted TCRγ4δ1, we examined the cytolytic activity of TCRγ4δ1-reconstituted J.RT3-T3.5 cells and cytokine secretion and found the receptors are fully functional, but their functionality also requires the presence of γ4. Our results demonstrated that γ4 is critical for the stability of δ1 and the function of TCRγ4δ1.
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Affiliation(s)
- Y Jiang
- Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & School of Basic Medicine, Peking Union Medical College, National Key Laboratory of Medical Molecular Biology, Beijing, China
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90
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Hu LH, Xu Y, Zhu W, Wu L, Tang F, Lu KH. Large eddy simulation of pollutant gas dispersion with buoyancy ejected from building into an urban street canyon. J Hazard Mater 2011; 192:940-948. [PMID: 21216525 DOI: 10.1016/j.jhazmat.2010.12.063] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 12/14/2010] [Accepted: 12/15/2010] [Indexed: 05/30/2023]
Abstract
The dispersion of buoyancy driven smoke soot and carbon monoxide (CO) gas, which was ejected out from side building into an urban street canyon with aspect ratio of 1 was investigated by large eddy simulation (LES) under a perpendicular wind flow. Strong buoyancy effect, which has not been revealed before, on such pollution dispersion in the street canyon was studied. The buoyancy release rate was 5 MW. The wind speed concerned ranged from 1 to 7.5m/s. The characteristics of flow pattern, distribution of smoke soot and temperature, CO concentration were revealed by the LES simulation. Dimensionless Froude number (Fr) was firstly introduced here to characterize the pollutant dispersion with buoyancy effect counteracting the wind. It was found that the flow pattern can be well categorized into three regimes. A regular characteristic large vortex was shown for the CO concentration contour when the wind velocity was higher than the critical re-entrainment value. A new formula was theoretically developed to show quantitatively that the critical re-entrainment wind velocities, u(c), for buoyancy source at different floors, were proportional to -1/3 power of the characteristic height. LES simulation results agreed well with theoretical analysis. The critical Froude number was found to be constant of 0.7.
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Affiliation(s)
- L H Hu
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui China.
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91
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Wang LJ, Zhou X, Wang W, Tang F, Qi CL, Yang X, Wu S, Lin YQ, Wang JT, Geng JG. Andrographolide inhibits oral squamous cell carcinogenesis through NF-κB inactivation. J Dent Res 2011; 90:1246-52. [PMID: 21841043 DOI: 10.1177/0022034511418341] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The NF-κB family of transcription factors is essential for promoting cell proliferation and preventing cell apoptosis. We have previously shown that Andrographolide (Andro) isolated from an herbal plant, Andrographis paniculata, covalently modifies reduced cysteine(62) in the oligonucleotide binding pocket of p50 for inhibition of NF-κB activation. Here we report that Andro, but not its inactive structural analog 4H-Andro, potently suppressed squamous cell carcinogenesis induced by 7,12-dimethyl-1,2-benzanthracene (DMBA) in the hamster model of cheek buccal pouch. Compared with 4H-Andro, Andro reduced phosphorylation of p65 (Ser536) and IκBα (Ser32/36) for inhibiting aberrant NF-κB activation, suppressed c-Myc and cyclin D1 expression and attenuated neoplastic cell proliferation, promoted cancerous cell apoptosis, and mitigated tumor-induced angiogenesis. Consistently, Andro retarded growth, decreased proliferation, and promoted apoptosis of Tb cells, a human tongue squamous cell carcinoma cell line, in time- and dose-dependent manners, with concomitant reduction of the expression of NF-κB targeting molecules in vitro. Our results thus demonstrate that NF-κB activation plays important roles in the pathogenesis of chemically induced squamous cell carcinoma. By inhibition of aberrant NF-κB activation, Andro treats chemically induced oral squamous cell carcinogenesis.
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Affiliation(s)
- L-J Wang
- Vascular Biology Research Institute, Guangdong Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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92
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Round WH, Ng KH, Healy B, Rodriguez L, Thayalan K, Tang F, Fukuda S, Srivastava R, Krisanachinda A, Shiau AC, Deng X, Han Y. AFOMP Policy Statement No. 3: recommendations for the education and training of medical physicists in AFOMP countries. Australas Phys Eng Sci Med 2011; 34:303-7. [PMID: 21809140 DOI: 10.1007/s13246-011-0091-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Accepted: 07/24/2011] [Indexed: 11/25/2022]
Abstract
AFOMP recognizes that clinical medical physicists should demonstrate that they are competent to practice their profession by obtaining appropriate education, training and supervised experience in the specialties of medical physics in which they practice, as well as having a basic knowledge of other specialties. To help its member countries to achieve this, AFOMP has developed this policy to provide guidance when developing medical physicist education and training programs. The policy is compatible with the standards being promoted by the International Organization for Medical Physics and the International Medical Physics Certification Board.
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Affiliation(s)
- W H Round
- School of Engineering, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand.
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93
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Liao SB, Ho JC, Tang F, O WS. Adrenomedullin increases ciliary beat frequency and decreases muscular contraction in the rat oviduct. Reproduction 2011; 141:367-72. [DOI: 10.1530/rep-10-0230] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Our laboratory previously showed that oviduct produced the greatest amount of adrenomedullin (ADM) in the rat female reproductive tract. The aim of this study is to investigate the changes in ADM levels resulting from the contact between the sperm and the oviduct and the possible roles of ADM in ciliary beating and oviductal contractility. Oviducts from Sprague–Dawley rats removed at pre- and post-ovulatory stages were cut open longitudinally and treated with ADM and/or receptor blockers before ciliary beat frequency (CBF) was measured. The effects of sperm on ADM production and CBF in the oviduct were also determined. The contraction of the oviduct after treatment with ADM and receptor antagonists was measured using the organ-bath technique. The results showed that ADM increased the CBF in rat oviduct and this stimulating effect was blocked by the calcitonin-gene-related peptide (CGRP) receptor antagonist, hCGRP8–37. CBF was lower in post-ovulatory than pre-ovulatory oviducts. The presence of sperm in the oviduct increased both the ADM level and CBF. ADM treatment was shown to inhibit the contractility of the oviduct by lowering the basal tone and decreasing the contraction amplitude. The ADM receptor antagonist, hADM22–52, was effective in counteracting the relaxation effect of ADM in the oviduct. All in all, these results indicate that ADM may play a crucial role in transporting the gametes/embryos by regulating ciliary beating and muscular contraction.
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94
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DePaolo RW, Abadie V, Tang F, Fehlner-Peach H, Hall JA, Wang W, Marietta EV, Kasarda DD, Waldmann TA, Murray JA, Semrad C, Kupfer SS, Belkaid Y, Guandalini S, Jabri B. Co-adjuvant effects of retinoic acid and IL-15 induce inflammatory immunity to dietary antigens. Nature 2011; 471:220-4. [PMID: 21307853 DOI: 10.1038/nature09849] [Citation(s) in RCA: 303] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Accepted: 01/19/2011] [Indexed: 12/18/2022]
Abstract
Under physiological conditions the gut-associated lymphoid tissues not only prevent the induction of a local inflammatory immune response, but also induce systemic tolerance to fed antigens. A notable exception is coeliac disease, where genetically susceptible individuals expressing human leukocyte antigen (HLA) HLA-DQ2 or HLA-DQ8 molecules develop inflammatory T-cell and antibody responses against dietary gluten, a protein present in wheat. The mechanisms underlying this dysregulated mucosal immune response to a soluble antigen have not been identified. Retinoic acid, a metabolite of vitamin A, has been shown to have a critical role in the induction of intestinal regulatory responses. Here we find in mice that in conjunction with IL-15, a cytokine greatly upregulated in the gut of coeliac disease patients, retinoic acid rapidly activates dendritic cells to induce JNK (also known as MAPK8) phosphorylation and release the proinflammatory cytokines IL-12p70 and IL-23. As a result, in a stressed intestinal environment, retinoic acid acted as an adjuvant that promoted rather than prevented inflammatory cellular and humoral responses to fed antigen. Altogether, these findings reveal an unexpected role for retinoic acid and IL-15 in the abrogation of tolerance to dietary antigens.
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Affiliation(s)
- R W DePaolo
- Department of Medicine, University of Chicago, Chicago, Illinois 60637, USA
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96
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Figueiredo M, Lane S, Tang F, Liu BH, Hewinson J, Marina N, Kasymov V, Souslova EA, Chudakov DM, Gourine AV, Teschemacher AG, Kasparov S. Optogenetic experimentation on astrocytes. Exp Physiol 2010; 96:40-50. [PMID: 21041318 DOI: 10.1113/expphysiol.2010.052597] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- M Figueiredo
- School of Physiology and Pharmacology, School of Medical Sciences, University of Bristol, Bristol BS8 1TD, UK
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97
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Wu V, Tang F. Development of Tele-Localization System in Radiotherapy using Personal Data Assistant (PDA) Device via Wireless Communication. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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98
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Tang F, Zhuo W, Zhao C, Chen B, Xu Y, He L. A theoretical study on accurate measurements of thoron with airflow-through scintillation cell method. Radiat Prot Dosimetry 2010; 141:448-451. [PMID: 20876070 DOI: 10.1093/rpd/ncq252] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
For accurate measurements of (220)Rn concentration with airflow-through scintillation cell method, a theoretical study was performed for discussing the influences of sampling flow rate, volumes of sampling tube and scintillation cell on the measurements. It is found that a high flow rate and a large inner volume of scintillation cell as well as a small inner volume of sampling tube are not only preferable for measuring low levels of (220)Rn, but also helpful for enhancing the measurement accuracy. In calibration experiments, both the sampling flow rate and the sampling tube volume should be noted. The variations of the flow rate and tube volume should be considered for accurate measurements in the fields.
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Affiliation(s)
- F Tang
- Shanghai Institute of Measurements and Testing Technology, 1500 Zhangheng Rd., Shanghai, China
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99
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Li QQ, Chen ZQ, Cao XX, Xu JD, Xu JW, Chen YY, Wang WJ, Chen Q, Tang F, Liu XP, Xu ZD. Involvement of NF-κB/miR-448 regulatory feedback loop in chemotherapy-induced epithelial-mesenchymal transition of breast cancer cells. Cell Death Differ 2010; 18:16-25. [PMID: 20798686 DOI: 10.1038/cdd.2010.103] [Citation(s) in RCA: 133] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The epithelial-mesenchymal transition (EMT) induced by chemotherapeutic agents promotes malignant tumor progression; however, the mechanism underlying the drug-induced EMT remains unclear. In this study, we reported that miR-448 is the most downregulated microRNA following chemotherapy. Suppression of miR-448 correlated with EMT induction in breast cancer in vitro and in vivo. With the use of chromatin immunoprecipitation-seq analysis, we demonstrated that miR-448 suppression induces EMT by directly targeting special AT-rich sequence-binding protein-1 (SATB1) mRNA, leading to elevated levels of amphiregulin and thereby, increasing epidermal growth factor receptor (EGFR)-mediated Twist1 expression, as well as nuclear factor κB (NF-κB) activation. On the other hand, we also found that the adriamycin-activated NF-κB directly binds the promoter of miR-448 suppressing its transcription, suggesting a positive feedback loop between NF-κB and miR-448. Furthermore, all patients who received cyclophosphamide (CP), epirubicin plus taxotere/CP, epirubicin plus 5-fluorouracil chemotherapy showed miR-448 suppression, an increased SATB1, Twist1 expression and acquisition of mesenchymal phenotypes. These findings reveal an underlying regulatory pathway, in which the autoregulation between NF-κB and miR-448 is important for restrain miR-448 suppression upon chemotherapy and may have a role in the regulation of chemotherapy-induced EMT. Disruption of the NF-κB-miR-448 feedback loop during clinical treatment may improve the chemotherapy response of human breast cancers in which EMT is a critical component.
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Affiliation(s)
- Q-Q Li
- Department of Pathology, Shanghai Medical College, Fudan University, Shanghai 200032, China
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100
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Chiu PCN, Liao S, Lam KKW, Tang F, Ho JCM, Ho PC, O WS, Yao YQ, Yeung WSB. Adrenomedullin regulates sperm motility and oviductal ciliary beat via cyclic adenosine 5'-monophosphate/protein kinase A and nitric oxide. Endocrinology 2010; 151:3336-47. [PMID: 20444935 DOI: 10.1210/en.2010-0077] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Cilium and flagellum beating are important in reproduction and defects in their motion are associated with ectopic pregnancy and infertility. Adrenomedullin (ADM) is a polypeptide present in the reproductive system. This report demonstrates a novel action of ADM in enhancing the flagellar/ciliary beating of human spermatozoa and rat oviductal ciliated cells. At the concentration found in the seminal plasma, it increases the progressive motility of spermatozoa. ADM binds to its classical receptor, calcitonin receptor-like receptor/receptor activity-modifying protein complex on spermatozoa. ADM treatment increases the protein kinase A activities, the cyclic adenosine monophosphate, and nitric oxide levels of spermatozoa and oviductal cells. Pharmacological activators and inhibitors confirmed that the ADM-induced flagella/ciliary beating was protein kinase A dependent. Whereas nitric oxide donors had no effect on sperm motility, they potentiated the motility-inducing action of protein kinase A activators, demonstrating for the first time the synergistic action of nitric oxide and protein kinase A signaling in flagellar/ciliary beating. The ADM-induced motility enhancement effect in spermatozoa also depended on the up-regulation of intracellular calcium, a known key regulator of sperm motility and ciliary beating. In conclusion, ADM is a common activator of flagellar/ciliary beating. The study provides a physiological basis on possible use of ADM as a fertility regulation drug.
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Affiliation(s)
- Philip C N Chiu
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Queen Mary Hospital, Hong Kong, China
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