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Han M, Shao ZY, Yin LN, Che YQ, Qiu LX. [Occupational protection effect of two protective devices for manual cleaning and oiling of dental handpieces on operators]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:463-466. [PMID: 37400411 DOI: 10.3760/cma.j.cn121094-20220617-00325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Objective: To explore the occupational protective effect of different protective devices on the operators during manual cleaning and oiling of dental handpieces, and to provide a basis for the selection of appropriate protective methods. Methods: From November 2020 to December 2021, 20 high-speed dental handpieces of the same brand were selected and randomly divided into disposable protective bag group and small aerosol safety cabinet group by drawing lots, with 10 in each group. After recording the model, they were distributed to the clinical fixed consulting room for use, and were collected by specially-assigned personnel every day for manual cleaning under the protection of the two devices. By measuring the number of airborne colonies, the concentrations of particulate matter and the satisfaction of operators, the occupational protection effect of the two protective devices on operators was evaluated. Results: Under the protection of the two devices, the average number of airborne colonies after operation was less than 1 CFU/ml. When no protective device was used, the number concentration of particulate matter produced during operation was (21595.70±8164.26) pieces/cm(3). The number concentrations of particles produced by disposable protective bag group [ (6800.24±515.05) pieces/cm(3)] and small aerosol safety cabinet group [ (5797.15±790.50) pieces/cm(3)] were significantly lower than those without any protective device (P<0.001). The number concentration of particle matter of small aerosol safety cabinet group was significantly lower than that of disposable protective bag group (P<0.001). In the satisfaction evaluation of operators, small aerosol safety cabinet group [ (3.53±0.82) points] was significantly better than disposable protective bag group [ (2.23±1.10) points] (P<0.001) . Conclusion: The use of small aerosol safety cabinet during manual cleaning and oiling of dental handpieces has good protective effect, superior safety performance and strong clinical applicability, and has advantages in occupational protection of clinical operators.
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Affiliation(s)
- M Han
- Fourth Clinical Division, Peking University School and Hospital of Stomatology, Beijing 100025, China
| | - Z Y Shao
- Fourth Clinical Division, Peking University School and Hospital of Stomatology, Beijing 100025, China
| | - L N Yin
- Fourth Clinical Division, Peking University School and Hospital of Stomatology, Beijing 100025, China
| | - Y Q Che
- Fourth Clinical Division, Peking University School and Hospital of Stomatology, Beijing 100025, China
| | - L X Qiu
- Fourth Clinical Division, Peking University School and Hospital of Stomatology, Beijing 100025, China
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Sun B, Zhao J, Shao ZY. MiR-572 promotes the development of non-small cell lung cancer by targeting KLF2. Eur Rev Med Pharmacol Sci 2022; 26:3083-3090. [PMID: 35587058 DOI: 10.26355/eurrev_202205_28725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE The aim of this study was to uncover the role of miR-572 in regulating proliferative and migratory abilities in non-small cell lung cancer (NSCLC) and the possible mechanism. PATIENTS AND METHODS Expression levels of miR-572 in 46 matched NSCLC and paracancerous samples were detected. The relationship between miR-572 level and clinical features of NSCLC was analyzed. Subsequently, the regulatory effects of miR-572 on proliferative and migratory abilities in lung cancer cells were assessed by functional experiments. Finally, the downstream genes of miR-572 were tested by luciferase assay, and their functions in the development of NSCLC were finally explored by rescue experiments. RESULTS It was found that miR-572 was upregulated in NSCLC samples. High level of miR-572 predicted high rates of lymphatic and distant metastases, as well as poor prognosis in NSCLC. Besides, the knockdown of miR-572 suppressed proliferative and migratory abilities in A549 and SPC-A1 cells. KLF2 was identified to be the downstream gene of miR-572, which was involved in the regulation of NSCLC phenotypes influenced by miR-572. CONCLUSIONS MiR-572 is closely linked to metastasis and prognosis in NSCLC patients, and it promotes the malignant development of NSCLC via targeting KLF2.
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Affiliation(s)
- B Sun
- Department of Thoracic Surgery, Jining No. 1 People's Hospital, Jining, China.
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Moon PM, Shao ZY, Wambiekele G, Appleton CTG, Laird DW, Penuela S, Beier F. Global Deletion of Pannexin 3 Resulting in Accelerated Development of Aging-Induced Osteoarthritis in Mice. Arthritis Rheumatol 2021; 73:1178-1188. [PMID: 33426805 DOI: 10.1002/art.41651] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 01/07/2021] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Osteoarthritis (OA) results in pathologic changes in the joint tissue. The mechanisms driving disease progression remain largely unclear, and thus disease-modifying treatments are lacking. Pannexin 3 (Panx3) was identified as a potential mediator of cartilage degeneration in OA, and our previous study in mice indicated that deletion of the Panx3 gene delayed surgically induced cartilage degeneration. This study was undertaken to examine the role of Panx3 in other OA subtypes, particularly primary OA during aging, in a mouse model of aging-induced OA. METHODS Wild-type (WT) and Panx3-/- C57BL/6J (Black-6) mice, ages 18-24 months, were analyzed by micro-computed tomography to investigate bone mineral density and body composition. Joints were harvested from the mice, and histopathologic analysis of the joint tissue for OA development was conducted with a specific focus on changes in articular cartilage, subchondral bone, and synovial tissue. RESULTS Global loss of Panx3 in aging mice was not associated with increased mortality or changes in body composition. Mice lacking Panx3 had shorter appendicular skeletons than WT mice, but overall the body compositions appeared quite similar. Panx3 deletion dramatically accelerated cartilage degeneration and subchondral bone thickening with aging in both 18-month-old and 24-month-old mice, while promoting synovitis in 18-month-old mice. CONCLUSION These observations in a mouse model of OA suggest that Panx3 has a protective role against the development of primary aging-associated OA. It appears that Panx3 has opposing context-specific roles in joint health following traumatic injury versus that associated with aging. These data strongly suggest that there are differences in the molecular pathways driving different subtypes of OA, and therefore a detailed understanding of these pathways could directly improve strategies for OA diagnosis, therapy, and research.
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Affiliation(s)
- P M Moon
- University of Western Ontario, London, Ontario, Canada
| | - Z Y Shao
- University of Western Ontario, London, Ontario, Canada
| | - G Wambiekele
- University of Western Ontario, London, Ontario, Canada
| | | | - D W Laird
- University of Western Ontario, London, Ontario, Canada
| | - S Penuela
- University of Western Ontario, London, Ontario, Canada
| | - F Beier
- University of Western Ontario, London, Ontario, Canada
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Peng J, Ren XF, Yang C, Lan TB, Shao ZY, Chen Y. Effects of inflammatory response on renal function and TGF-β1 pathway of rats with aging-related kidney damage by upregulating the expression of CD36. Eur Rev Med Pharmacol Sci 2021; 24:8957-8967. [PMID: 32965022 DOI: 10.26355/eurrev_202009_22837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to explore the effects of inflammatory response on renal function and TGF-β1 pathway of rats with aging-related kidney damage by upregulating the CD36 expression. MATERIALS AND METHODS A total of 70 pathogen free (PF) Sprague-Dawley (SD) male rats were enrolled. The rats injected with normal saline and D-galactose were assigned to a control group and a model group, respectively. Those injected with both D-galactose and different concentrations of casein were assigned to casein A, B, and C groups accordingly, and 16 rats injected with D-galactose and with CD36 gene knocked out were assigned to a treatment group. The following methods were employed to determine the following factors of the rats: ELISA for serum inflammatory factors, Western blot for CD36 in kidney tissues, Real Time-PCR for TGF-β1, and Smad (2, 3, and 7) mRNA, radioimmunoassay for hyaluronic acid (HA) and laminin (LN), and colorimetry for the expression quantity of plasma superoxide dismutase (SOD) and malondialdehyde (MDA). An automatic biochemical analyzer was used to determine blood, urine, and renal function indexes. RESULTS After successful modeling, the model group showed significantly higher inflammatory indexes than the control group. The relative expression of CD36 in the model group was significantly higher than that in the control group and treatment group, and significantly lower than that in the casein groups. Both inflammatory indexes and relative expression of CD36 increased with the increase of casein concentration in the casein groups. Groups with severer inflammatory response showed higher renal function indexes, and higher expression of TGF-β1, Smad2, Smad3, HA, LN, and MDA, and those with decreased CD36 level showed lower renal function index levels. The Smad7 expression and SOD were contrary. CONCLUSIONS Inflammatory stress can promote the CD36 expression in renal tissues of aging rats and oxidative stress and affect TGF-β1/Smad pathway, thus aggravating renal fibrosis and renal damage in rats.
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Affiliation(s)
- J Peng
- Department of Nephrology, Central Theater Command General Hospital of the Chinese People's Liberation Army, Wuhan, China.
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Li Z, Yang AJ, Wei FM, Zhao XH, Shao ZY. Significant association of DIRC1 overexpression with tumor progression and poor prognosis in gastric cancer. Eur Rev Med Pharmacol Sci 2018; 22:8682-8689. [PMID: 30575946 DOI: 10.26355/eurrev_201812_16633] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE DIRC1, Disrupted in Renal Cancer 1, was identified as a breakpoint-spanning gene in a chromosomal translocation, which was associated with the onset and progression of some cancers. However, the expression in human gastric cancer (GC) and the role of DIRC1 in human gastric tumorigenesis are unknown. Thereby, the main purpose of this study was to unearth the association of DIRC1 with GC. MATERIALS AND METHODS By analyzing The Cancer Genome Atlas (TCGA) datasets, the expression of DIRC1 in GC and normal gastric tissues were compared. Besides, its association with clinicopathological significance, overall survival (OS) and independent prognosis were analyzed by Pearson's x2 test, Kaplan-Meier method and Cox proportional hazards model, respectively. Functionally, the knockdown of DIRC1 was performed by siRNA method; moreover, its effects on the proliferation and metastasis of GC cells were examined by CCK-8 and transwell assays. Furthermore, the key markers of protein kinase B (AKT)/mammalian target of rapamycin (mTOR) signaling were tested by Western blot assay. RESULTS The results showed that high expression of DIRC1 was found in GC tissues compared with normal gastric tissues. High expression of DIRC1 was associated with more cases of severer tumor malignancy and shorter OS; besides, high-level of DIRC1 was suggested to be an independent prognostic factor for GC. Furthermore, the knockdown of DIRC1 inhibited SGC-7901 GC cells proliferation, migration and invasion. Mechanically, the activity of AKT/mTOR signaling was suppressed by the knockdown of DIRC1. CONCLUSIONS These findings offer clinical associations and an in vitro evidence showing that the knockdown of DIRC1 impeded the GC carcinogenicity possibly via suppression of AKT/mTOR signaling. This work might provide a potential therapeutic target for GC treatment.
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Affiliation(s)
- Z Li
- Department of Radiotherapy, Qilu Hospital of Shandong University, Jinan, Shandong, P.R. China.
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Sun DS, Zhang JD, Li L, Dai Y, Yu JM, Shao ZY. Accelerated hyperfractionation field-involved re-irradiation combined with concurrent capecitabine chemotherapy for locally recurrent and irresectable rectal cancer. Br J Radiol 2011; 85:259-64. [PMID: 21385917 DOI: 10.1259/bjr/28173562] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To evaluate the efficacy and treatment-related toxicity of accelerated hyperfractionation field-involved re-irradiation combined with concurrent capecitabine chemotherapy for locally recurrent and irresectable rectal cancer (LRIRC). METHODS 72 patients with LRIRC who underwent the treatment were studied. Three-dimensional conformal accelerated hyperfractionation radiotherapy (3D-CAHRT) was performed and the dose was delivered with a schedule of 1.2 Gy twice daily, with an interval of at least 6 h between fractions, 5 days a week. Concurrent capecitabine chemotherapy was administered twice daily. After 36 Gy in 30 fractions over 3 weeks, patients were evaluated to define the resectability of the disease. If resection was not feasible irradiation was resumed until the total dose administered to the tumour reached 51.6-56.4 Gy. RESULTS Two patients temporarily interrupted concurrent chemoradiation because of Grade IV diarrhoea. The remaining 70 patients completed the planned concurrent chemoradiation. In all patients, the complete response rate was 8.3% and the partial response rate was 51.4%. The overall response rate was 59.7% and clinical benefit rate was 93.1%. Symptomatic responses proved to be obvious and tumour resection was performed in 18 patients. The overall median survival time and median progression-free survival time were 32 and 17 months, respectively. 3 year overall survival and progression-free survival were 45.12% and 31.19%, respectively. Severely acute toxicities included Grade III-IV diarrhoea and granulocytopenia with 9.7% and 8.3% incidence respectively. Small bowel obstruction was severely late toxicity, and the incidence was 1.4%. CONCLUSION Three-dimensional conformal accelerated hyperfractionation field-involved re-irradiation combined with concurrent capecitabine chemotherapy might be an effective and well-tolerated regimen for patients with LRIRC.
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Affiliation(s)
- D-S Sun
- Department of Oncology, the Second Hospital of Shandong University, Jinan, Shandong Province, China
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Chen MJ, Shao ZY, Zhang WJ, Wang ZH, Zhang WH, Hu HS. X-knife stereotactic radiosurgery on the trigeminal ganglion to treat trigeminal neuralgia: a preliminary study. ACTA ACUST UNITED AC 2011; 53:223-8. [PMID: 21302189 DOI: 10.1055/s-0030-1269926] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Stereotactic radiosurgery is an attractive option for elderly patients and those who do not tolerate the more invasive surgical procedures available for trigeminal neuralgia (TN). In the majority of the studies, the target location was designated as the proximal nerve at the root entry zone (REZ). The purpose of this article was to evaluate the efficacy of and complications associated with X-knife stereotactic radiosurgery on the trigeminal ganglion (TG) for TN. PATIENTS AND METHODS 40 patients with typical idiopathic TN were treated with X-knife. The maximum radiation dose was 70 Gy. A 4-mm collimator and a 9-arc technique were employed. Treatment was focused at the TG. RESULTS At the last follow-up (mean follow-up period: 7.9 months, range: 1-19 months), pain relief for all patients was excellent in 16 (40%), good in 17 (42.5%), for a total success rate of 82.8%. The mean time to initial relief was 12.5 days ranging from immediate in onset (<24 h) to 2 months. One patient (3.0%) experienced some recurrent pain. 3 patients (7.5%) experienced noticeable subjective facial numbness. Hearing impairment was found in 1 patient (2.5%), and ulceration of the temporal skin was seen in 2 patients (5%). CONCLUSION Similar to other TN radiosurgery reports, X-knife stereotactic radiosurgery for TN provides effective pain relief with a low complication rate.
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Affiliation(s)
- M-J Chen
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China
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Qin MH, Xu QH, Shao ZY, Gao Y, Fu YJ, Lu XM, Gao PJ, Holmbom B. Effect of bio-treatment on the lipophilic and hydrophilic extractives of wheat straw. Bioresour Technol 2009; 100:3082-7. [PMID: 19268580 DOI: 10.1016/j.biortech.2009.01.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2008] [Revised: 01/27/2009] [Accepted: 01/29/2009] [Indexed: 05/17/2023]
Abstract
Wheat straw, an important papermaking raw material in China, was treated with a white-rot fungus of Phanerochaete chrysosporium ME446, and the lipophilic and hydrophilic extractives from the control and bio-treated samples were analyzed by GC and GC-MS. Bio-treatment of wheat straw could alter the chemical composition of both the lipophylic and hydrophilic extractives. Sugars and phenolic substances such as coniferyl alcohol, 4-hydroxycinnamic acid, 1-guaiacylglycerol and ferulic acid were substantially degraded or consumed by the fungus. More lipophilic substances such as wax, glycerides and steryl esters were degraded into the corresponding components, resulting in much higher concentrations of fatty acids and sterols in the bio-treated samples. Obviously, the bio-treatment of wheat straw was of benefit to pitch control in pulping and papermaking processes, in the view of degradation of the more lipophilic substances. In addition, the bio-treatment could increase the lignin concentration in hot-water extractives of wheat straw.
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Affiliation(s)
- M H Qin
- Shandong Key Laboratory of Pulp and Paper Engineering, Shandong Institute of Light Industry, University Park of Science and Technology, Jinan 250353, China.
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Jing FJ, Huang N, Liu YW, Zhang W, Zhao XB, Fu RKY, Wang JB, Shao ZY, Chen JY, Leng YX, Liu XY, Chu PK. Hemocompatibility and antibacterial properties of lanthanum oxide films synthesized by dual plasma deposition. J Biomed Mater Res A 2008. [PMID: 18257083 DOI: 10.1016/j.tsf.2006.07.137] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Lanthanum oxide (La(2)O(3)) films with good hemocompatibility and antibacterial properties have been fabricated using dual plasma deposition. X-ray photoelectron spectroscopy (XPS) shows that La exists in the +3 oxidation state. The band gap of the materials is determined to be 3.6 eV. Activated partial thromboplastin time (APTT) and blood platelet adhesion tests were used to evaluate the blood compatibility. The bacteria, Staphylococcus aureus, were used in plate counting tests to determine the surface antibacterial properties. The APTT is a little longer than those of blood plasma and stainless steel (SS). Furthermore, the numbers of adhered, aggregated, and morphologically changed platelets are reduced compared with those on low-temperature isotropic carbon and SS. The antibacterial plate-counting test indicates that La(2)O(3) has good antibacterial activity against S. aureus. These unique hemocompatibility and antibacterial properties make La(2)O(3) useful in many biomedical applications.
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Affiliation(s)
- F J Jing
- Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People's Republic of China
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Pan CJ, Shao ZY, Tang JJ, Wang J, Huang N. In vitro studies of platelet adhesion, activation, and protein adsorption on curcumin-eluting biodegradable stent materials. J Biomed Mater Res A 2007; 82:740-6. [PMID: 17326229 DOI: 10.1002/jbm.a.31108] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A major complication of coronary stenting is in-stent restenosis (ISR) due to thrombus formation. We hypothesized that locally released curcumin from coronary stent surface would inhibit ISR due to thrombus formation because of antithrombosis of curcumin. In the present work, curcumin-eluting polylactic acid-co-glycolic acid (PLGA) films were fabricated and their properties in vitro were investigated. The in vitro platelet adhesion and activation, as well as protein adsorption on curcumin-loading PLGA films were investigated to evaluate the blood compatibility of curcumin-eluting films. The structure of curcumin-eluting PLGA film and control was examined by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy indicating that the peaks of curcumin did not shift in curcumin-eluting films. The results of contact angle and surface free energy indicated that loading curcumin in PLGA would make PLGA become more hydrophilic, which contributed to the increase of polar fraction of surface free energy. With the increase of curcumin in films, platelets adhering to the curcumin-eluting films decreased significantly. The number of activation platelets decreased after incorporating curcumin in PLGA films. Loading curcumin in PLGA film can markedly reduce the fibrinogen adsorption. All results indicated that incorporating curcumin in PLGA film can improve the blood compatibility of PLGA films. It can be used to fabricate drug-eluting stent to prevent thrombosis formation.
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Affiliation(s)
- C J Pan
- School of Materials Science and Engineering, SouthWest Jiaotong University, Chengdu 610031, China
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Pan CJ, Tang JJ, Shao ZY, Wang J, Huang N. Improved blood compatibility of rapamycin-eluting stent by incorporating curcumin. Colloids Surf B Biointerfaces 2007; 59:105-11. [PMID: 17540543 DOI: 10.1016/j.colsurfb.2007.04.015] [Citation(s) in RCA: 32] [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] [Subscribe] [Scholar Register] [Received: 03/20/2007] [Revised: 04/10/2007] [Accepted: 04/25/2007] [Indexed: 11/17/2022]
Abstract
This paper dealt with improving the blood compatibility of the rapamycin-eluting stent by incorporating curcumin. The rapamycin- and rapamycin/curcumin-loaded PLGA (poly(d,l-lactic acid-co-glycolic acid)) coatings were fabricated onto the surface of the stainless steel stents using an ultrasonic atomization spray method. The structure of the coating films was characterized by Fourier transform infrared spectroscopy (FTIR). The optical microscopy and scanning electron microscopy (SEM) images of the drug-eluting stents indicated that the surface of all drug-eluting stents was very smooth and uniform, and there were not webbings and "bridges" between struts. There were not any cracks and delaminations on stent surface after expanded by the angioplasty balloon. The in vitro platelet adhesion and activation were investigated by static platelet adhesion test and GMP140 (P-selection), respectively. The clotting time was examined by activated partially prothromplastin time (APTT) test. The fibrinogen adsorption on the drug-loaded PLGA films was evaluated by enzyme-linked immunosorbent assay (ELISA). All obtained data showed that incorporating curcumin in rapamycin-loaded PLGA coating can significantly decrease platelet adhesion and activation, prolong APTT clotting time as well as decrease the fibrinogen adsorption. All results indicated that incorporating curcumin in rapamycin-eluting coating obviously improve the blood compatibility of rapamycin-eluting stents. It was suggested that it may be possible to develop a drug-eluting stent which had the characteristics of not only good anti-proliferation but also improved anticoagulation.
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Affiliation(s)
- C J Pan
- Key Laboratory of Advanced Materials Technology, Education Ministry, Southwest Jiaotong University, Chengdu 610031, China
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Shao ZY, Li J, Sim CJ, Li JY, Li ZY, Nan FJ, Guo YW. O-methyl nakafuran-8 lactone, a new sesquiterpenoid from a hainan marine sponge Dysidea sp. J Asian Nat Prod Res 2006; 8:223-7. [PMID: 16864428 DOI: 10.1080/10286020500383882] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
A new sesquiterpenoid, O-methyl nakafuran-8 lactone (1) has been isolated from a Hainan sponge Dysidea sp. and the structure of the new compound proposed by spectral data, was confirmed by X-ray diffraction analysis. The complete 1H- and 13C-NMR assignments were made on the basis of detailed 2D NMR spectral analysis. Compound 1 showed strong inhibitory bioactivity against PTP1B with IC50 value of 1.58 microM.
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Affiliation(s)
- Z-Y Shao
- State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Zhangjiang High-Tech Park, Shanghai 201203, China
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Abstract
The genetic structure of seven mainland and island Asian populations of Bombus ignitus was investigated using nine microsatellite markers and the sequences of part of the mitochondrial cytochrome b (cytb) gene. While microsatellite markers showed high genetic variability, no sequence variation was found in the cytb gene fragment analyzed. The number of microsatellite alleles ranged from 9 to 24. Gene diversities per locus per population ranged from 0.378 to 0.992. Analysis of molecular variance (AMOVA) and most pairwise F(ST) values showed significant genetic differentiation between mainland and island populations. Cytb sequences data and microsatellite bottleneck tests indicated that almost all populations were subjected to recent bottlenecks. Our results suggest that B. ignitus populations diverged due to recent bottlenecks and geographic isolation.
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Affiliation(s)
- Z-Y Shao
- Laboratory of Coevolution, Shanghai Institute of Plant Physiology & Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 20032, P. R. China
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Shao ZY, Massiani MA, Bazelly B, Antoine M, Khalil A, Carette MF. [Intrapulmonary rupture of a dermoid cyst: MRI findings]. Rev Pneumol Clin 2003; 59:311-316. [PMID: 14707928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We report a case of dermoid cyst of the mediastinum ruptured into the lung. Only a few reports of ruptured mediastinal dermoid cyst have appeared in the literature. A 18-year-old female patient developed a tumor in the anterior mediastinum, which was coincidentally detected by a conventional chest X-ray. CT and MRI demonstrated two components: a cystic mediastinal mass and adjacent parenchymatous condensation. The cystic mass (no enhancement during or after injection) had a fatty structure: high-intensity T1 signal and low-intensity T2 signal. The thin wall (low-intensity signal on T1 and T2) was strongly enhanced during the systemic time and was ruptured. The parenchymatous condensation included a fatty effusion and an inflammatory reaction with the same T1 signal as the cyst, remaining slightly hyperintense on T2 with enhancement after injection. Cine-MRI demonstrated that the mass and the compressed right atrium were independent.
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Affiliation(s)
- Z Y Shao
- Service de Radiologie, Hôpital Tenon, 4, rue de la Chine, 75970 Paris 20 AP-HP, UPMC
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Soloviev MM, Brierley MJ, Shao ZY, Mellor IR, Volkova TM, Kamboj R, Ishimaru H, Sudan H, Harris J, Foldes RL, Grishin EV, Usherwood PN, Barnard EA. Functional expression of a recombinant unitary glutamate receptor from Xenopus, which contains N-methyl-D-aspartate (NMDA) and non-NMDA receptor subunits. J Biol Chem 1996; 271:32572-9. [PMID: 8955083 DOI: 10.1074/jbc.271.51.32572] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
A cDNA encoding a 100-kDa subunit (XenNR1) of the N-methyl-D-aspartate (NMDA) glutamate receptor type has been cloned from Xenopus central nervous system. When XenNR1 is coexpressed in a mammalian cell line with a recently cloned 51-kDa non-NMDA receptor subunit (XenU1), also from Xenopus, it forms a functional unitary receptor exhibiting the pharmacological properties characteristic of both NMDA and non-NMDA receptors. Firstly, XenU1 can replace NR2 subunits, in complementing XenNR1 to introduce the ligand binding properties of a complete NMDA receptor. Second, responses to both NMDA and non-NMDA receptor agonists and antagonists were obtained in patch-clamp recordings from the cotransfected cells, but no significant responses were recorded when the cells were singly transfected. Third, from solubilized cell membranes from the cotransfected cells, an antibody to the NR1 subunit coprecipitated the binding sites of the non-NMDA receptor subunit. The unitary glutamate receptor has a unique set of properties that denote intersubunit interaction, including a glycine requirement for the responses to non-NMDA as well as to NMDA receptor agonists and voltage-dependent block by Mg2+ of the non-NMDA agonist responses.
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Affiliation(s)
- M M Soloviev
- Molecular Neurobiology Unit, Royal Free Hospital School of Medicine, London NW3 2PF, United Kingdom.
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Shao ZY. [Neuropathy of the autonomic nervous system in experimental diabetic animals]. Sheng Li Ke Xue Jin Zhan 1984; 15:321-4. [PMID: 6152709] [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: 01/18/2023]
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