1.Construction of Recombinant Adenovirus Expression Vector of Human Sema4C Gene and Its Expression in Mouse Myoblasts Cell Line C2C12
Hai-Tao WU ; Shu-Hong LIU ; Yan WU ; Jun-Die FAN ; Wen-Hong FAN ; Ming FAN ;
China Biotechnology 2006;0(04):-
To generate recombinant adenovirus expression vector of human Sema4C gene and observe its expression in mouse myoblasts cell line C2C12 for ensuring easy access to investigate the role of Sema4C gene during myogenesis. The recombinant plasmid was packaged and amplified after being transfected in HEK293 cells through Lipofectamine. After infecting C2C12 myoblasts with recombinant adenovirus vector, the adenoviral infection efficiency was determined by confocal microscope which showed that the expression of green fluorescence could be detected at 12h and then reached peak at 24h after recombinant adenovirus infection. The infection efficiency was almost 100% confirmed by FACS examination. Detection of WB indicated that the expression of Sema4C in C2C12 of recombinant adenoviral infection group was significantly higher than that of the control group (P
2.Application of the theories of materiomic release kinetics to the evaluation of the sustained release kinetics and synchronicity of yinqiaojiedu honeyed pills.
Die LING ; Ji-Wen ZHANG ; Li-Bing CHEN ; Meng LIN ; Wei-Hong GE ; Jing-Kai GU
Acta Pharmaceutica Sinica 2008;43(11):1140-1146
Yinqiaojiedu honeyed pills were equally divided into 1/4, 1/8, 1/12, and 1/16 parts. The materiomics release rates within 12 h of the intact Yinqiaojiedu honeyed pills and the divided granules were determined by the paddle method with a rotate speed at 100 r x min(-1), and the materiome was quantified by UV-scan and Kalman filter methods. The intact Yinqiaojiedu honeyed pills behaved typical sustained release profiles, while the well-divided portions also maintained a sustained release profile over 2-4 h. The release rates were well correlated with the extents for the divisions of the pills. The Weibull distribution parameters, Td and T50, were reduced in line with the particle size, indicating that the ways of administration of the pills may play a role in the in vivo pharmacokinetics of the pills. The visualization results showed obvious difference of materiomic release synchronicities between the intact pills and the equally divided particles, and the divisions enhanced the asynchronization. Therefore the novel theory of materiomic release/dissolution kinetics of traditional Chinese medicines (TCMs) quantitatively proved the traditional dosage form, namely, honeyed pills, as a prototype of the sustained-release dosage form with a visualization of the scientific connotation to the old saying in the classics of TCM, Pills, the moderate ones in action. In terms of materiome increase for each period of the release profiles, the materiomic release synchronicity was visually demonstrated. The novel theories provided methodological basis for the evaluation of traditional dosage forms and the design of the modern drug delivery systems for TCMs.
Delayed-Action Preparations
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Drug Combinations
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Drug Delivery Systems
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Drugs, Chinese Herbal
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administration & dosage
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chemistry
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isolation & purification
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pharmacokinetics
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Kinetics
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Medicine, Chinese Traditional
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Particle Size
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Plants, Medicinal
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chemistry
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Solubility
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Technology, Pharmaceutical
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methods
3.Association of Visit-to-Visit Variability of Blood Pressure with Cardiovascular Disease among Type 2 Diabetes Mellitus Patients: A Cohort Study
Zhe Bin YU ; Die LI ; Xue Yu CHEN ; Pei Wen ZHENG ; Hong Bo LIN ; Meng Ling TANG ; Ming Juan JIN ; Jian Bing WANG ; Kun CHEN
Diabetes & Metabolism Journal 2019;43(3):350-367
BACKGROUND: Increasing evidence has shown that visit-to-visit variability (VVV) of blood pressure (BP) is associated with an increased risk of cardiovascular disease (CVD). The objective of this study was to evaluate the impact of VVV of systolic blood pressure (SBP) and diastolic blood pressure (DBP) on the risk of CVD among patients with type 2 diabetes mellitus (T2DM) in China. METHODS: We conducted a retrospective cohort study of 10,163 T2DM patients who were not previously diagnosed with CVD from January 2008 to December 2012 in Ningbo, China. The VVV of BP was calculated using five metrics, including standard deviation (SD), coefficient of variation (CV), variation independent of mean, average real variability, and successive variability (SV) of measurements, obtained over a 24-month measurement period. Hazard ratios and 95% confidence intervals (CIs) were estimated by Cox proportional hazards regression models for the associations of variability in BP with risk of CVD. RESULTS: A total of 894 CVD events were observed during a median follow-up of 49.5 months. The hazard ratio in the highest quintile of SD of SBP was 1.24 (95% CI, 1.01 to 1.52) compared with patients in the lowest quintile. The association between higher VVV of DBP and risk of CVD was not consistent across different metrics and sensitivity analyses. CONCLUSION: Higher VVV of SBP was associated with an increased risk of CVD, irrespective of the mean SBP level. Future studies are needed to confirm these findings.
Blood Pressure
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Cardiovascular Diseases
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China
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Cohort Studies
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Diabetes Mellitus, Type 2
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Follow-Up Studies
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Humans
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Retrospective Studies
4.Application of ventilator cluster nursing for mechanically ventilated patients in Craniocerebral Department
Yu-Hua ZHOU ; Wei-Yi ZHU ; Yan-Xing XU ; Mei-Qing XU ; Li LIN ; Die-Wen HONG ; Hai-Xiong XU
Chinese Journal of Modern Nursing 2013;19(4):405-407
Objective To study the effect of ventilator cluster nursing in mechanically ventilated patients in Craniocerebral Department.Methods Totals of 60 cases of mechanically ventilated patients admitted during January 2010 to July 2011 in Craniocerebral Department wards were the experimental group,which received ventilator cluster nursing,including raising bed 30-45 °,prevention of peptic ulcer,trying to stop sedatives everyday,prevention of deep vein thrombosis,oral care,attraction of subglottic secretions and hand hygiene.A total of 58 cases of mechanically ventilated patients from June 2008 to December 2009 in the same department were the control group,receiving conventional methods of nursing.Incidence,duration of mechanical ventilation and mortality of ventilator-associated pneumonia (VAP) in two groups were compared.Results The incidence,duration of mechanical ventilation and mortality of VAP were respectively 40.0%,(189.7 ± 64.5) h and 25.0% in the experimental group,72.4%,(331.3 ± 86.7) h and 51.7% in the control group,and the differences were statistically significant (x2/t =12.571,10.089,8.928,respectively; P <0.05).Conclusions Ventilator cluster nursing can reduce the incidence and mortality of VAP,as well as shorten the duration of mechanical ventilation in mechanically ventilated patients in Craniocerebral Department.
5.Preliminary study on the clinical application of temporary treatment denture in difficult edentulous cases before complete denture restoration.
Wen-Qiao ZHOU ; Die LIU ; Tao CHEN ; Yan PENG ; Ting-Ting ZHANG ; Chang-Hong HU
West China Journal of Stomatology 2018;36(3):277-281
OBJECTIVETo explore the clinical effects of treatment denture on difficult edentulous cases before complete denture restoration.
METHODSThirty-six patients who experienced unsuccessful restoration of conventional complete dentures were included in this study. Treatment dentures were fabricated to solve issues such as abnormal occlusion, tissue surface problems, and neuromuscular dysfunction of the stomatognathic system caused by systemic diseases. The final complete dentures were fabricated by duplicating the treatment dentures. Jaw relation index, stability, and retention were evaluated at different stages. Oral health-related quality of life was measured using the Chinese version of Oral Health Impact Profile for edentulous subjects (OHIP-EDENT).
RESULTSAmong the 36 patients, 33 successfully completed the final restoration with positive effects.
CONCLUSIONSTreatment denture is an effective pre-restorative option that can be used to correct abnormal occlusion, improve tissue surface problems, and aid in neuromuscular rehabilitation training. Treatment dentures contribute to the successful restoration of the final complete dentures and is worthy of clinical applications.
6.Diagnosis status and genetic characteristics analysis of Fanconi anemia in China.
Niu LI ; Die Xin HU ; Xia QIN ; Yi Ping ZHU ; Ming ZHOU ; Lan HE ; Li Xian CHANG ; Xiao Jun XU ; Yan DAI ; Xing Yu CAO ; Kai CHEN ; Hong Mei WANG ; Chun Jing WANG ; Yue Lin HE ; Xiao Wen QIAN ; Lan Ping XU ; Jing CHEN
Chinese Journal of Pediatrics 2023;61(10):889-895
Objective: To analyze the clinical and molecular diagnostic status of Fanconi anemia (FA) in China. Methods: The General situation, clinical manifestations and chromosome breakage test and genetic test results of 107 pediatric FA cases registered in the Chinese Blood and Marrow Transplantation Registry Group (CBMTRG) and the Chinese Children Blood and Marrow Transplantation Registry Group (CCBMTRG) from August 2009 to January 2022 were analyzed retrospectively. Children with FANCA gene variants were divided into mild and severe groups based on the type of variant, and Wilcoxon-test was used to compare the phenotypic differences between groups. Results: Of the 176 registered FA patients, 69 (39.2%) cases were excluded due to lack of definitive genetic diagnosis results, and the remaining 107 children from 15 hospitals were included in the study, including 70 males and 37 females. The age at transplantation treatment were 6 (4, 9) years. The enrolled children were involved in 10 pathogenic genes, including 89 cases of FANCA gene, 7 cases of FANCG gene, 3 cases of FANCB gene, 2 cases of FANCE gene and 1 case each of FANCC, FANCD1, FANCD2, FANCF, FANCJ, and FANCN gene. Compound heterozygous or homozygous of loss-of-function variants account for 69.2% (72/104). Loss-of-function variants account for 79.2% (141/178) in FANCA gene variants, and 20.8% (37/178) were large exon deletions. Fifty-five children (51.4%) had chromosome breakage test records, with a positive rate of 81.8% (45/55). There were 172 congenital malformations in 80 children.Café-au-Lait spots (16.3%, 28/172), thumb deformities (16.3%,28/172), polydactyly (13.9%, 24/172), and short stature (12.2%, 21/172) were the most common congenital malformations in Chinese children with FA. No significant difference was found in the number of congenital malformations between children with severe (50 cases) and mild FANCA variants (26 cases) (Z=-1.33, P=0.185). Conclusions: FANCA gene is the main pathogenic gene in children with FA, where the detection of its exon deletion should be strengthened clinically. There were no phenotypic differences among children with different types of FANCA variants. Chromosome break test is helpful to determine the pathogenicity of variants, but its accuracy needs to be improved.
Male
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Female
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Humans
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Child
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Fanconi Anemia/genetics*
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Chromosome Breakage
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Retrospective Studies
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Exons
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China/epidemiology*