1
|
Jin LL, He MY, Zhou H, Xie WP, Kong H. [Effects of macrophage glycolytic reprogramming on tuberculosis granuloma formation]. Zhonghua Jie He He Hu Xi Za Zhi 2023; 46:834-838. [PMID: 37536997 DOI: 10.3760/cma.j.cn112147-20221119-00912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
The formation of granulomatous lesions is a typical pathological feature of tuberculosis, and infection with Mycobacterium tuberculosis is the main cause. Although the mechanism underlying granuloma formation remains unclear, increasing evidence suggests that immune metabolism plays an important role. In this review, we summarized the latest advances in macrophage glycolytic reprogramming in tuberculosis granuloma formation to discover new methods for early diagnosis and provided new ideas for tuberculosis therapeutics based on the regulation of immune metabolism.
Collapse
Affiliation(s)
- L L Jin
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - M Y He
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - H Zhou
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - W P Xie
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - H Kong
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| |
Collapse
|
2
|
He MY, Zeng FF, Wu Y, Miao Q. [A case of Wiedemann-Steiner syndrome characterized by amenorrhoea, hypertrichosis, short stature, intellectual disability]. Zhonghua Nei Ke Za Zhi 2023; 62:438-441. [PMID: 37032141 DOI: 10.3760/cma.j.cn112138-20220709-00503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Affiliation(s)
- M Y He
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai 200040, China Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - F F Zeng
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Y Wu
- Department of Radiology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Q Miao
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai 200040, China
| |
Collapse
|
3
|
De Oliveira Duarte S, Rancoule C, He MY, Baury M, Sotton S, Vallard A, Espenel S, Guy JB, Guillaume É, Vial N, Magné N, Rehailia-Blanchard A. Use of 4D-CT for radiotherapy planning and reality in France: Data from a national survey. Cancer Radiother 2019; 23:395-400. [PMID: 31331842 DOI: 10.1016/j.canrad.2019.02.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/15/2019] [Accepted: 02/21/2019] [Indexed: 12/25/2022]
Abstract
PURPOSE Lung and some digestive tumours move during a respiratory cycle. Four-dimensional scanography (4D-CT) is commonly used in treatment planning to account for respiratory motion. Although many French radiotherapy centres are now equipped, there are no guidelines on this subject to date. We wanted to draw up a description of the use of the 4D-CT for the treatment planning in France. METHODS AND MATERIAL We conducted a survey in all French radiotherapy centres between March and April 2017. RESULTS One hundred and seventy-two were contacted. The participation rate was 88.37%. The use of the 4D-CT seems to be common and concerned planning for 15.28% of kidney and adrenal cancers, 19.72% of pancreatic cancers, 27.78% of oesophageal cancers and 73.24% of lung cancers in case of normofractionated treatments. The use of the 4D-CT was also widespread in the case of stereotactic body radiation therapy: with 61.11% in the case of pulmonary irradiation and 34.72% in the case of hepatic irradiation. Many centres declared they carried out several 4D-CT for treatment planning (29, 55% in case of stereotactic body radiation therapy for lung tumours and 20% for liver tumours). Private centres tend to repeat 4D-CT more. CONCLUSION Although the use of the 4D-CT appears to be developing, it remains very heterogeneous. To date, the repetition of the 4D-CT has been very poorly studied and could be the subject of clinical studies, allowing to define in which indications and for which populations there is a real benefit.
Collapse
Affiliation(s)
- S De Oliveira Duarte
- Département de radiothérapie, Institut de cancérologie de la Loire Lucien-Neuwirth, 108, bis, avenue Albert-Raimond, 42270 Saint-Priest-en-Jarez, France; CS 60032, École universitaire de physique et d'ingénierie, université Clermont-Auvergne, 49, boulevard François-Mitterrand, 63001 Clermont-Ferrand, France
| | - C Rancoule
- Département de radiothérapie, Institut de cancérologie de la Loire Lucien-Neuwirth, 108, bis, avenue Albert-Raimond, 42270 Saint-Priest-en-Jarez, France
| | - M Y He
- Département de radiothérapie, Institut de cancérologie de la Loire Lucien-Neuwirth, 108, bis, avenue Albert-Raimond, 42270 Saint-Priest-en-Jarez, France; Oncology department, Affiliated Hospital of Guizhou Medical University, China
| | - M Baury
- Département de radiothérapie, Institut de cancérologie de la Loire Lucien-Neuwirth, 108, bis, avenue Albert-Raimond, 42270 Saint-Priest-en-Jarez, France
| | - S Sotton
- Département de radiothérapie, Institut de cancérologie de la Loire Lucien-Neuwirth, 108, bis, avenue Albert-Raimond, 42270 Saint-Priest-en-Jarez, France
| | - A Vallard
- Département de radiothérapie, Institut de cancérologie de la Loire Lucien-Neuwirth, 108, bis, avenue Albert-Raimond, 42270 Saint-Priest-en-Jarez, France
| | - S Espenel
- Département de radiothérapie, Institut de cancérologie de la Loire Lucien-Neuwirth, 108, bis, avenue Albert-Raimond, 42270 Saint-Priest-en-Jarez, France
| | - J-B Guy
- Département de radiothérapie, Institut de cancérologie de la Loire Lucien-Neuwirth, 108, bis, avenue Albert-Raimond, 42270 Saint-Priest-en-Jarez, France
| | - É Guillaume
- Département de radiothérapie, Institut de cancérologie de la Loire Lucien-Neuwirth, 108, bis, avenue Albert-Raimond, 42270 Saint-Priest-en-Jarez, France
| | - N Vial
- Département de radiothérapie, Institut de cancérologie de la Loire Lucien-Neuwirth, 108, bis, avenue Albert-Raimond, 42270 Saint-Priest-en-Jarez, France
| | - N Magné
- Département de radiothérapie, Institut de cancérologie de la Loire Lucien-Neuwirth, 108, bis, avenue Albert-Raimond, 42270 Saint-Priest-en-Jarez, France
| | - A Rehailia-Blanchard
- Département de radiothérapie, Institut de cancérologie de la Loire Lucien-Neuwirth, 108, bis, avenue Albert-Raimond, 42270 Saint-Priest-en-Jarez, France.
| |
Collapse
|
4
|
Rehailia-Blanchard A, He MY, Rancoule C, Guillaume É, Guy JB, Vial N, Nivet A, Orliac H, Chargari C, Magné N. [Medical prevention and treatment of radiation-induced urological and nephrological complications]. Cancer Radiother 2019; 23:151-160. [PMID: 30898418 DOI: 10.1016/j.canrad.2018.05.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 05/09/2018] [Accepted: 05/30/2018] [Indexed: 02/02/2023]
Abstract
Abdominal and pelvic irradiations play a major place in the management of patients with cancer and present a risk of acute and late side effects. Radiation-induced lesions can affect kidney or urological structures. These side effects can have an impact in the quality of life of patients. The aim of this article is to describe the physiopathology, the symptomatology, and the principles of management of radiation-induced nephropathy, uretheritis, cystitis, and urethritis.
Collapse
Affiliation(s)
- A Rehailia-Blanchard
- Département de radiothérapie, institut de cancérologie Lucien-Neuwirth, 108 bis, rue Albert-Raimond, 42270 Saint-Priest en Jarez, France.
| | - M Y He
- Département de radiothérapie, institut de cancérologie Lucien-Neuwirth, 108 bis, rue Albert-Raimond, 42270 Saint-Priest en Jarez, France; Oncology departement, affiliated hospital of Guizhou medical university, 550004 China
| | - C Rancoule
- Département de radiothérapie, institut de cancérologie Lucien-Neuwirth, 108 bis, rue Albert-Raimond, 42270 Saint-Priest en Jarez, France
| | - É Guillaume
- Département de radiothérapie, institut de cancérologie Lucien-Neuwirth, 108 bis, rue Albert-Raimond, 42270 Saint-Priest en Jarez, France
| | - J-B Guy
- Département de radiothérapie, institut de cancérologie Lucien-Neuwirth, 108 bis, rue Albert-Raimond, 42270 Saint-Priest en Jarez, France
| | - N Vial
- Département de radiothérapie, institut de cancérologie Lucien-Neuwirth, 108 bis, rue Albert-Raimond, 42270 Saint-Priest en Jarez, France
| | - A Nivet
- Département de radiothérapie, CHU de Limoges, 2, avenue Martin-Luther-King, 87000 Limoges, France
| | - H Orliac
- Département de radiothérapie, CHU de Limoges, 2, avenue Martin-Luther-King, 87000 Limoges, France
| | - C Chargari
- Département de radiothérapie, Gustave-Roussy Cancer Campus, 114, rue Édouard-Vaillant, 94805 Villejuif, France; Inserm, U1030, 114, rue Édouard-Vaillant, 94805 Villejuif , France; Université Paris Sud, université Paris-Saclay, 94270 Le Kremlin-Bicêtre, France; Institut de recherche biomédicale des armées, D19, 91220 Brétigny-sur-Orge, France
| | - N Magné
- Département de radiothérapie, institut de cancérologie Lucien-Neuwirth, 108 bis, rue Albert-Raimond, 42270 Saint-Priest en Jarez, France
| |
Collapse
|
5
|
Vallard A, Rancoule C, Espenel S, Garcia MA, Langrand-Escure J, He MY, Ben Mrad M, El Meddeb Hamrouni A, Ouni S, Trone JC, Rehailia-Blanchard A, Guillaume E, Vial N, Riocreux C, Guy JB, Magné N. Harnessing drug/radiation interaction through daily routine practice: Leverage medical and methodological point of view (MORSE 02-17 study). Radiother Oncol 2018; 129:471-478. [PMID: 29937210 DOI: 10.1016/j.radonc.2018.06.010] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 06/02/2018] [Accepted: 06/04/2018] [Indexed: 12/30/2022]
Abstract
BACKGROUND Safety profile of the interaction between anticancer drugs and radiation is a recurrent question. However, there are little data regarding the non-anticancer treatment (NACT)/radiation combinations. The aim of the present study was to investigate concomitant NACTs in patients undergoing radiotherapy in a French comprehensive cancer center. METHODS A prospective cross-sectional study was conducted. All cancer patients undergoing a palliative or curative radiotherapy were consecutively screened for six weeks in 2016. Data on NACTs were collected. RESULTS Out of 214 included patients, a NACT was concomitantly prescribed to 155 patients (72%), with a median number of 5 NACTs per patient (range: 1-12). The most prescribed drugs were anti-hypertensive drugs (101 patients, 47.2%), psychotropic drugs (n = 74, 34.6%), analgesics (n = 78, 36.4%), hypolipidemic drugs (n = 57, 26.6%), proton pump inhibitors (n = 46, 21.5%) and antiplatelet drugs (n = 38, 17.8%). Although 833 different molecules were reported, only 20 possible modifiers of cancer biological pathways (prescribed to 74 patients (34.5%)) were identified. Eight out of the 833 molecules (0.9%), belonging to six drug families, have been investigated in 28 ongoing or published clinical trials in combo with radiotherapy. They were prescribed to 63 patients (29.4%). CONCLUSION Drug-radiation interaction remains a subject of major interest, not only for conventional anticancer drugs, but also for NACTs. New trial designs are thus required.
Collapse
Affiliation(s)
- A Vallard
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France; Cellular and Molecular Radiobiology Laboratory, CNRS UMR 5822, IPNL, 69622 Villeurbanne, France
| | - C Rancoule
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France; Cellular and Molecular Radiobiology Laboratory, CNRS UMR 5822, IPNL, 69622 Villeurbanne, France
| | - S Espenel
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France; Cellular and Molecular Radiobiology Laboratory, CNRS UMR 5822, IPNL, 69622 Villeurbanne, France
| | - M-A Garcia
- General Health Department, Hygée Institute, Avenue Albert Raimond, BP 60008, 42271 Saint-Priest en Jarez, France
| | - J Langrand-Escure
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France
| | - M Y He
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France
| | - M Ben Mrad
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France
| | - A El Meddeb Hamrouni
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France
| | - S Ouni
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France
| | - J-C Trone
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France
| | - A Rehailia-Blanchard
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France
| | - E Guillaume
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France
| | - N Vial
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France
| | - C Riocreux
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France
| | - J-B Guy
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France; Cellular and Molecular Radiobiology Laboratory, CNRS UMR 5822, IPNL, 69622 Villeurbanne, France
| | - N Magné
- Radiotherapy Department, Lucien Neuwirth Cancer Institute, 42270 St Priest en Jarez, France; Cellular and Molecular Radiobiology Laboratory, CNRS UMR 5822, IPNL, 69622 Villeurbanne, France.
| |
Collapse
|
6
|
Zhou WC, Li YM, Zhang H, Li X, Zhang L, Meng WB, Zhu KX, Zhang QB, He MY. Therapeutic effects of endoscopic therapy combined with enteral nutrition on acute severe biliary pancreatitis. Chin Med J (Engl) 2011; 124:2993-2996. [PMID: 22040542] [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: 05/31/2023] Open
Abstract
BACKGROUND Acute severe biliary pancreatitis (ASBP) is a severe and fatal disease, and the expenditure is huge and therapeutic effects are still not satisfactory. This study aimed to improve the therapeutic effects and reduce the expenditure of ASBP treatment. METHODS One hundred and five patients diagnosed with ASBP were referred to our department from January 2004 to July 2009. Diagnosis was based on the 2007 criteria of the Chinese Society of Surgery. Patients were divided into two groups; the E group: 50 patients who underwent endoscopic retrograde choledochopancreatography (ERCP) + endoscopic sphincterotomy (EST) + endoscopic lithotripsy basket (ESR) + endoscopic retrograde biliary drainage (ERBD) and enteral nutrition (EN), and the R group: 55 patients who underwent traditional treatment without ERCP. Subsequently, subjective symptoms, signs, biochemical analysis, serum endotoxin, tumor necrosis factor a, grades by computed tomography (CT), cost of hospitalization and length of stay were compared between the two groups. RESULTS All enrolled patients complied well with all therapeutic regimens. Endoscopic therapy that combined EN could significantly improve symptoms, clinical signs, laboratory values, tumor necrosis factor a and endotoxin while significantly reducing hospital expenditure and length of hospital stay. The experimental findings revealed that there were obvious advantages in the E group compared with the R group. CONCLUSIONS Endoscopic therapy combined with EN is an effective, safe and economic therapeutic regimen of ASBP.
Collapse
Affiliation(s)
- Wen-Ce Zhou
- Department II of General Surgery, the First Hospital of Lanzhou University, the First Clinical Medical School of Lanzhou University, Lanzhou, Gansu 730000, China
| | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Guo XJ, Xiao B, Zhang XL, Luo SY, He MY. Experimental study on air-stream gasification of biomass micron fuel (BMF) in a cyclone gasifier. Bioresour Technol 2009; 100:1003-1006. [PMID: 18713664 DOI: 10.1016/j.biortech.2008.07.007] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 03/18/2008] [Revised: 07/02/2008] [Accepted: 07/08/2008] [Indexed: 05/26/2023]
Abstract
Based on biomass micron fuel (BMF) with particle size of less than 250 microm, a cyclone gasifier concept has been considered in our laboratory for biomass gasification. The concept combines and integrates partial oxidation, fast pyrolysis, gasification, and tar cracking, as well as a shift reaction, with the purpose of producing a high quality of gas. In this paper, experiments of BMF air-stream gasification were carried out by the gasifier, with energy for BMF gasification produced by partial combustion of BMF within the gasifier using a hypostoichiometric amount of air. The effects of ER (0.22-0.37) and S/B (0.15-0.59) and biomass particle size on the performances of BMF gasification and the gasification temperature were studied. Under the experimental conditions, the temperature, gas yields, LHV of the gas fuel, carbon conversion efficiency, stream decomposition and gasification efficiency varied in the range of 586-845 degrees C, 1.42-2.21 N m(3)/kg biomass, 3806-4921 kJ/m(3), 54.44%-85.45%, 37.98%-70.72%, and 36.35%-56.55%, respectively. The experimental results showed that the gasification performance was best with ER being 3.7 and S/B being 0.31 and smaller particle, as well as H(2)-content. And the BMF gasification by air and low temperature stream in the cyclone gasifier with the energy self-sufficiency is reliable.
Collapse
Affiliation(s)
- X J Guo
- School of Environment and Materials Engineering, Yantai University, Road. Qingquan 32, Yantai 264005, China.
| | | | | | | | | |
Collapse
|
8
|
Mercer C, He MY, Wang R, Evans AG. Mechanisms governing the inelastic deformation of cortical bone and application to trabecular bone. Acta Biomater 2006; 2:59-68. [PMID: 16701859 DOI: 10.1016/j.actbio.2005.08.004] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2005] [Revised: 07/28/2005] [Accepted: 08/10/2005] [Indexed: 10/25/2022]
Abstract
To understand the inelastic response of bone, a three-part investigation has been conducted. In the first, unload/reload tests have been used to characterize the hysteresis and provide insight into the mechanisms causing the strain. The second part devises a model for the stress/strain response, based on understanding developed from the measurements. The model rationalizes the inelastic deformation in tension, as well as the permanent strain and hysteresis. In the third part, a constitutive law representative of the deformation is selected and used to illustrate the coupled buckling and bending of ligaments that arise when trabecular bone is loaded in compression.
Collapse
Affiliation(s)
- C Mercer
- Materials Department, University of California Santa Barbara, Santa Barbara, 93106, USA.
| | | | | | | |
Collapse
|
9
|
Dong YZ, Liu ZL, Shan XH, Qiu T, He MY, Liu B. Allopolyploidy in wheat induces rapid and heritable alterations in DNA methylation patterns of cellular genes and mobile elements. Genetika 2005; 41:1089-95. [PMID: 16161630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Whereas accumulating recent evidences indicate that allopolyploid formation in plants is accompanied by rapid and non-Mendelian genomic changes, some other works showed genomic stasis in both nascent and natural allopolyploids. To further study the issue, we performed global DNA fingerprinting of a newly synthesized allohexaploid wheat and its natural counterpart, the common wheat, by AFLP analysis. It was found that ca. 20% bands showed deviation from parental additivity in both synthetic and the natural common wheat. Sequence analysis indicates that a majority of the changed bands represent known-function genes and transposable elements. DNA gel blot analysis showed that the main type of changes in the amphiploid is epigenetic in nature, i.e., alteration in DNA methylation patterns. Two types of alterations in methylation, random and non-random, were detected, and both types were stably inherited. Possible causes and implications of the epigenetic changes in allopolyploid genome evolution and speciation are discussed.
Collapse
Affiliation(s)
- Y Z Dong
- Laboratory of Molecular Epigenetics, Northeast Normal University, Changchun 130024, China
| | | | | | | | | | | |
Collapse
|
10
|
He MY, Nie LP, Lin XP, Yuan XH, Xie NH. [The clinical use of "2x4" orthodontic technique for mixed dentition's anterior crossbite]. Shanghai Kou Qiang Yi Xue 2001; 10:287. [PMID: 14994024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- M Y He
- Department of Orthodontics, People's Hospital of Cuiping District, Yibin 644000 Sichuan province, China
| | | | | | | | | |
Collapse
|
11
|
Li JL, Shu GM, He MY. [Studies on medicinal plant resources of heizhu ravine in Ebian County and their sustainable utilization]. Zhongguo Zhong Yao Za Zhi 2000; 25:14-6. [PMID: 12205965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
OBJECTIVE To find out the medicinal plant resources of Heizhu Ravine in Ebian County and put forward some principles and measures for their sustainable utilization. METHOD On-the-spot investigation and sample measuring, calculating, visiting and assessing. RESULTS The general situation about these resources was expounded. New curative effects of 3 species, distribution and region output of 7 superiority resource species, 1 plant pesticide species, 3 species suitable for extensive propagation and 7 rare species on the verge of extinction were also reported. CONCLUSION This area has more than 1500 species of medicinal plants, of which about 300 are original traditional Chinese medicinal herb in most use and 1200 are used in folk medicine or as important medicinal raw mAterials.
Collapse
Affiliation(s)
- J L Li
- Sichuan Institute of Chinese Materia Medica, Sichuan Chengdu 610041, China
| | | | | |
Collapse
|
12
|
Zhang X, De Los Angeles JE, He MY, Dalton JT, Shams G, Lei L, Patil PN, Feller DR, Miller DD, Hsu FL. Medetomidine analogs as alpha 2-adrenergic ligands. 3. Synthesis and biological evaluation of a new series of medetomidine analogs and their potential binding interactions with alpha 2-adrenoceptors involving a "methyl pocket". J Med Chem 1997; 40:3014-24. [PMID: 9301663 DOI: 10.1021/jm960642q] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The synthesis and the biological evaluation of a new series of medetomidine analogs are reported. The substitution pattern at the phenyl ring of the tetralin analogs had a distinct influence on the alpha 2-adrenoceptor binding affinity. 4-Methylindan analog 6 was the most potent alpha 2-adrenoceptor binding ligand among these 4-substituted imidazoles, and its alpha 2-adrenoceptor selectivity was greater than the 5-methyl tetralin analog 4c. Ligand-pharmacophore and receptor modeling were combined to rationalize alpha 2-adrenoceptor binding data of the imidazole analogs in terms of ligand-receptor interactions. The structure-activity relationships that were apparent from this and previous studies were qualitatively rationalized by the binding site models of the alpha 2-adrenoceptor. The benzylic methyl group of medetomidine or the naphthyl analog 2a was superimposable with the alpha-methyl group of (-)-alpha-methylnorepinephrine and fit into the proposed "methyl pocket" of the alpha 2-adrenoceptor defined by the residues Leu110, Leu169, Phe391, and Thr395.
Collapse
Affiliation(s)
- X Zhang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee, Memphis 38163, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
McMeeking RM, He MY, Chia R. Structural analysis of the Björk-Shiley Delrin heart valve occluder. J Heart Valve Dis 1996; 5 Suppl 2:S229-37. [PMID: 8905523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND AND AIMS OF THE STUDY Impact wear grooves were evident in some Delrin occluder discs of explanted Björk-Shiley Delrin (BSD) heart valves. This study focuses on the finite element analysis (FEA) method to understand the maximum principal stresses experienced during the peak in vivo loading of valves in the closed position. MATERIALS AND METHODS The maximum pressure difference across the valve was measured to be 130 mmHg in a pulse duplicator simulating normal sinus rhythm obtained clinically by cardiac catheterization. The corresponding measured strain was 1.81 x 10(-3). The FEA model incorporated four points of contact between the disc and the orifice ring to estimate the maximum principal stresses in the disc of the BSD heart valve. A linear pressure distribution averaging 130 mmHg was applied so that the finite element results gave a strain of 1.81 x 10(-3) at the gauge location as experimentally observed. RESULTS The largest stress in the Delrin disc of the BSD valve occurred when the occluder made four-point contact with the orifice ring struts. The resulting localized compressive stress on the inflow side could be as high as 42 ksi, assuming the Hertzian contact theory. The magnitude of tensile stresses were less, but were highest on the outlet surface opposite the point of contact. The highest tensile stress for an ungrooved disc was found to be 8.35 ksi, which was below the ultimate tensile strength and yield stress in flexure for Delrin. Therefore, it is unlikely that yielding or tensile failure will occur at this level of stress. Maximum tensile stresses were found to be 1.442 and 1.448 ksi for discs with single and multiple grooves respectively. CONCLUSION The model predicts that as a wear groove is created, the area of contact between the disc and the inlet strut of the BSD valve will increase, thereby reducing average compressive contact stress and hence, the wear rate.
Collapse
Affiliation(s)
- R M McMeeking
- Department of Mechanical and Environmental Engineering, University of California, Santa Barbara 93106, USA
| | | | | |
Collapse
|
14
|
Kaderbhai MA, He MY, Beechey RB, Kaderbhai N. Co-expression of a precursor and the mature protein of wheat ribulose-1,5-bisphosphate carboxylase small subunit from a single gene in Escherichia coli. DNA Cell Biol 1990; 9:11-25. [PMID: 2180428 DOI: 10.1089/dna.1990.9.11] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The cDNA encoding a precursor of wheat ribulose-1,5-bisphosphate carboxylase/oxygenase was inserted in-phase with prokaryotic expression elements in four different vectors. Five expression vectors encoding the small subunit precursors were cloned in Escherichia coli. None of these constructs expressed detectable amounts of the precursor protein, but all directed synthesis of the mature small subunit. The expression of the small subunit was a consequence of an independent, intragenic Shine-Dalgarno sequence optimally located upstream from an ATG specifying the first codon of the mature small subunit portion in the precursor transcript. Similar internal translation signals have been identified in the nuclear-encoded cDNAs of the small-subunit precursors of numerous higher plant genes. The 5' end of the wheat small-subunit precursor was linked with a consensus E. coli DNA sequence such that the modified gene encoded a partial hybrid precursor carrying four additional residues at its amino terminus. The resultant construct, pEI-W3, directed abundant synthesis of both the partially hybrid small-subunit precursor and the mature small subunit, constituting as much as 10% of the total bacterial protein. The bacterially synthesized small subunit precursor was purified to homogeneity. The authenticity of the recombinant protein was verified by its size, immunological properties, amino-terminal sequence, and amino acid composition.
Collapse
Affiliation(s)
- M A Kaderbhai
- Department of Biochemistry, University College of Wales, Aberystwyth, Dyfed, UK
| | | | | | | |
Collapse
|
15
|
Zhang MZ, He MY. [Synthesis of diacylhydrazides of 2-indole and their physiological activity]. Yao Xue Xue Bao 1984; 19:737-41. [PMID: 6443333] [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: 01/20/2023]
|