1.Potential drugs for early Alzheimer's disease:Donanemab injection
The Chinese Journal of Clinical Pharmacology 2024;40(9):1372-1374
Donanemab is a novel anti-amyloid antibody medication that is primarily used to treat early-stage symptomatic Alzheimer's disease.Clinical investigations have demonstrated that it modulates issues with cognitive function and everyday functioning.Preclinical research has discovered that it reduces amyloid deposition in the hippocampus and cortical layers of the brain.To better comprehend cutting-edge novel medications,this article examines the latest research on donanemab.
2.Genetic Stability of a Recombinant Biocontrol Bacteria 308R(pKSH)
Yan-Qin LI ; Yan BAI ; Quan SHEN ;
Microbiology 1992;0(05):-
Biocontrol bacteria 308R(pKSH) with hrpN of Erwinia amyloyora. It can secrete the Harpin protein which can induce plant resistance. After successive growth in antibiotic-free LB medium for 50 generations, only 23.1% of the cell still retained the plasmid pKSH, in comparison with 4.75% of the cosmid pCPP430. Sprayed onto the leaves of tomato, the recombinant strain maintained a population density of over 10~ 5 cfu/cm~ 2 when kept under high humidity in thirteen days, but if without humidity, the strain keep 10~ 4 cfu/cm~ 2 over in five days. On the tomato leaves, the stability of the recombinant strain 308R(pKSH) was higher than the strain 308R(pCPP430). The experiment indicated that the recombinant strain 308R(pKSH) had higher stability compared with the strain 308R(pCPP430), but that was not enough. In this paper reasons for unstability and strategies for improving were discussed for the recombinant strain.
4.Celomic and retroperitoneal lipoleiomyosarcoma: report of a case.
Xiu-zhen LI ; Hong-quan WEI ; Bai-zhou LI
Chinese Journal of Pathology 2011;40(5):343-344
Abdominal Neoplasms
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metabolism
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pathology
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surgery
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Actins
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metabolism
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Angiomyolipoma
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metabolism
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pathology
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Desmin
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metabolism
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Diagnosis, Differential
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Humans
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Leiomyosarcoma
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metabolism
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pathology
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surgery
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Liposarcoma
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metabolism
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pathology
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surgery
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Male
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Middle Aged
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Neoplasms, Multiple Primary
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metabolism
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pathology
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surgery
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Retroperitoneal Neoplasms
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metabolism
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pathology
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surgery
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S100 Proteins
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metabolism
5.The relationship between juxtapapillary duodenal diverticulum and recurrence of biliary stones
Wenhui BAI ; Li CHENG ; Ping JIANG ; Guang LUO ; Quan SUN
Chinese Journal of General Surgery 2014;29(7):495-498
Objective To explore whether the presence of juxtapapillary duodenal diverticula (JPDD) risks biliary stone disease and recurrence.Methods 829 patients undergoing ERCP in our hospital from Aug 2008 to Dec 2012 were divided into four groups:biliary stone disease (n =609) non-stone biliary abnormality (n =124) common bile duct malformation with cholelithiasis (n =38) and normal control group (n =58).There were 206 patients with JPDD and 623 patients without JPDD.Biliary stoneformation,post-ERCP pancreatitis,cannulation failure,and stone recurrence were compared between those with JPDD and those without.Results The incidence of JPDD in biliary stone disease group (27.8%) was significantly higher than in non-stone biliary anatomical abnormality group (18.5 %) (x2 =4.512,P < 0.05).In biliary stone disease group,rates of post-ERCP pancreatitis were significantly higher in JPDD cases (33.7%) compared to those without JPDD (13.8%) (x2 =30.841,P < 0.05).The cannulation failure rate was also higher in patients with JPDD (15.4%) compared to JPDD negative (6.8%) (x2 =0.731,P <0.05).Recurrence rates in biliary stone disease were significantly higher in patients with JPDD (19.5%) when compared to JPDD-lacking individuals (9.3%) (x2 =14.51,P < 0.05).Conclusions JPDD is a risk factor for biliary stone formation.JPDD also is associated with post-ERCP pancreatitis,cannulation failure and biliary stone recurrence.
6.Genetic Transformation of Phytoene Synthase Gene into Ginseng Callus Cells
Yuan-Hua YU ; Bai-Quan DU ; Yong ZHANG ; Li ZHANG ;
China Biotechnology 2006;0(02):-
Phytoene synthase is a rate-limiting enzyme in the pathway of carotenoid biosynthesis.To aim at establishing a transformation of Ginseng callus cells, elevating the nutritive value through encouraging the composition of corresponding carotenoid,taking Ginseng callus cells as acceptor,psy gene were transformed into cells via Agrobacterium-mediated. The factors affecting genetict ransformation were also investigated seperately from concentrations of A.tumefaciens, age of Ginseng callus cells, infection time and co-culture time. PCR,PCR-Southern and RT-PCR analysis from the transferred gene plants proved that psy gene has been transferred into Ginseng callus cells and can be expressed. The content of ?-carotene was increased by an average of 26 times.A base of improving and raising the contents of carotenoid in the Ginseng callus cell was established.
7.Causal analysis of blood heat syndrome in psoriasis vulgaris
Yan-Ping BAI ; Ji-Juan ZENG ; Ding-Quan YANG ;
China Journal of Traditional Chinese Medicine and Pharmacy 2005;0(08):-
Objective:To analyze the cause of the blood heat syndrome in psoriasis.Methods: Made the investigation form about information of psoriatic patients through DME method and reference both Chinese and foreign documents,analyzed main component of data by SAS software.Results: The first main component of blood heat syndrome in psoriasis are infection,drinking,dietetic problem,and emotion;the second main component is family history;the third main component is dampness;the forth main component is the allergy to the food;the fifth is outside irritation.Through the corresponding investigation we found that food include hot food,beef,sheep and sea food,emotion problem include over work and stress,dampness include work and living in humid place for long time,outside stimulus meant chemical stimulus.Conclusion: The main cause of the blood heat syndrome in psoriasis are infection,drinking,dietetic problem,and emotion,family history,humidity,allergy to the food and chemical stimulus in order.
8.Comparison of the Curative Effect of Concurrent Chemoradiotherapy and Sequential Chemoradiotherapy in Non-small Cell Lung Cancer
Hua BAI ; Min-Quan HOU ; Xiao-Ning BAI
Journal of Kunming Medical University 2015;36(6):42-45
Objective To analyze the curative effect and toxicity of concurrent chemoradiotherapy and sequential chemoradiotherapy in non-small cell lung cancer patients.Methods 64 patients with unresectable stage Ⅲ non-small cell lung cancer in our hospital between May 2010 and Mar 2013 were randomly assigned into concurrent group and sequential group for this test.Concurrent group patients (32 cases) were given Cisplatin and Gemcitabine on the 1,4,7 week during radiotherapy.Sequential group patients accepted 3 cycles chemotherapy before radiotherapy.Results The response rate was 68.8% in concurrent group,and 43.8% in sequential group.Difference was significant between the response rates of the two groups (P < 0.05).There was significant difference in haematological toxicity,which was 100% in concurrent group and 65.6% in sequential group (P < 0.05).There was no significant difference in rates of radiation pneumonia and radiation esophagitis in the two groups (P > 0.05) Conclusions Concurrent chemoradiotherapy has better curative effect than sequential chemoradiotherapy.Concurrent chemoradiotherapy is a safe and effective treatment for patients with unresectable stage Ⅲ non-small cell lung cancer.
9.Resveratrol increases sensitivity of CNE2 cells to chemotherapeutic drugs under hypoxia.
Fang QUAN ; Shaoqiang ZHANG ; Yanxia BAI ; Xiaobao YAO ; Honghui LI ; Liang YU ; Chengen PAN
Journal of Integrative Medicine 2009;7(10):952-7
Objective: To explore the sensitization effects of resveratrol on CNE2 nasopharyngeal carcinoma cell line with hypoxia-induced chemotherapy resistance and the potential mechanism. Methods: Human CNE2 nasopharyngeal carcinoma cell line was cultured under hypoxic conditions (37 degrees centigrade, 5% CO(2), 2% O(2)) in vitro. The cultured cells were treated with different concentrations of resveratrol for 48 h. Reversal fold (RF) of reseratrol to chemotherapeutic drugs in CNE2 cells was measured by methyl thiazolyl tetrazolium (MTT) assay. Apoptotic rate of CNE2 cells was observed by flow cytometry. Reverse transcription-polymerase chain reaction (RT-PCR) method and Western blotting were used to investigate the expressions of multidrug resistance gene 1 (mdr1), multidrug resistance-associated protein 1 (MRP1) and hypoxia inducible factor 1alpha (HIF-1alpha) in CNE2 cells. Results: Resveratrol combined with chemotherapeutics produced a synergistic effect. The RF of 200 alphamol/L resveratrol to paclitaxel was 2.58. Combined with paclitaxel, 25, 50, 100 and 200 alphamol/L of resveratrol increased the apoptotic rate of CNE2 cells from (22.14+/-1.09)% to (23.24+/-1.37)%, (27.57+/-2.01)%, and (30.36+/-2.31)%, respectively. Resveratrol could down-regulate the expressions of HIF-1alpha, mdr1 and MRP1 significantly. After being treated with resveratrol at different concentrations separately, the expressions of HIF-1alpha, mdr1 and MRP1 in CNE2 cells decreased significantly as compared with paclitaxel alone or paclitaxel plus verapamil (P<0.01). Conclusion: Resveratrol can enhance the sensitivity of CNE2 cells to chemotherapeutic drugs under hypoxia. The potential mechanism is partly attributed to inhibiting the gene expressions of HIF-1alpha, mdr1 and MRP1.
10.The characteristics and clinical application of the ArcCHECK diode array for volumetric-modulated arc therapy verification
Chengqiang LI ; Guangjun LI ; Chuanxian JI ; Jianghong XIAO ; Chang GUO ; Hong QUAN ; Sen BAI
Chinese Journal of Radiation Oncology 2013;(3):253-257
Objective To evaluate the characteristics and clinical suitability of the ArcCHECK diode array for volumetric-modulated arc therapy (VMAT) verification.Methods The intrinsic sensitivity,short and long term reproducibility,dose and dose rate dependence,dose per pulsed dependence,field sizes dependence and directional response of the diodes were measured.The results of the diodes were compared with the measurement results of an ionization chamber and calculated results of treatment planning system.Gamma index was used to analyze the dose difference between the calculation and measurement for random selected 211 verified VMAT plans.Results The ArcCHECK performed well for all tests except directional dependence,which varies from a minimum of-3.9% (seen only when the beam was incident on the diode at 180°) to a maximum of 7.7% (approximately at 255°).Average gamma analysis passing rates with 3 mm/3% for 113 nasopharyngeal cancer,48 cervical cancer and 50 rectal cancer patients VMAT plans were 93.5%,95.7% and 97.5%,respectively,statistical significance has been found between either two of the groups (t=-12.69-4.88,all P< 0.01).Conclusions With proposed calibration method,the ArcCHECK diode array is very suitable for VMAT pretreatment verification,the complexity of VMAT plan is the main factor affecting the passing rate.