1.Recurrent implantation failure: gamete and embryo factors.
National Journal of Andrology 2014;20(6):544-547
Despite the immense achievement in the field of IVF in recent years, many patients still suffer from recurrent implantation failure. Therefore, much attention has been drawn to its etiology and treatment. Chromosomal abnormality, sperm DNA damage, zona hardening, and inappropriate culture conditions are important factors that lead to recurrent implantation failure. Results of studies suggest that preimplantation genetic screening does not improve the rate of implantation or live birth. Comparative genomic hybridization array and single nucleotide polymorphism array could offer a more comprehensive screening of chromosomes. Assisted hatching may help to solve the problem of zona hardening in some situations. Co-culture and blastocyst transfer could be conducive to the improvement of the rates of implantation and pregnancy. Cytoplasmic transfer may give a solution to ooplasmic composition anomalies.
Chromosome Aberrations
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Coculture Techniques
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Embryo Implantation
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Embryo Transfer
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Female
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Fertilization in Vitro
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Germ Cells
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Humans
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Male
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Pregnancy
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Preimplantation Diagnosis
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Treatment Failure
2. "Sweating" of traditional Chinese medicinal materials during primary processing and its mechanisms of enzymatic reaction and chemical conversion
Chinese Traditional and Herbal Drugs 2013;44(10):1219-1225
Primary processing of traditional Chinese medicinal materials (TCMM) is an important link which closely relates to the quality of products in TCMM. The traditional primary processing method and technology systems were derived from the long-term practices and experiences, which are distinctive, colorful, diverse, and scientific. The method of "sweating" is a critical step for processing the rhizome, root, cortex, and sclerotium and helpful for distributing moisture from inside to outside of TCMM in drying process, regulating and promoting the enzymatic reaction and chemical conversion by enzyme and germs, and starting or accelerating the biotransformation and chemical conversion of primary/secondary metabolites, which could directly affect the quality of TCMM. In this paper, the authors discuss the origins and development, purpose, and significance of "sweating" processing and the mechanisms of enzymatic reaction and chemical conversion of chemical compositions during the primary processing of "sweating". These data may provide the foundation and support for processing in normalization and standardization and formulating the Standard Operating Procedure (SOP) of primary processing of TCMM.
3. Establishment and practice for evaluating model of best harvest time of traditional Chinese medicinal materials
Chinese Traditional and Herbal Drugs 2010;41(11):1755-1760
The harvest time of traditional Chinese medicinal materials (TCMM) is a very essential part for production of TCMM, and affects their quality and yield. The research on the best harvest time of TCMM has been a key problem taken into account more and more with practicing GAP of TCMM. Based on thoughts and methods of resource chemistry, this paper established an evaluated mode to objectively determine the best harvest time of Angelica sinensis through system investigating from different producing areas and harvest times, and characterize the phenology and multi-index components comprehensive criteria. The author firstly proposed the suitable methods of the best harvest time of TCMM, which was a basis of theory and methods of resource chemistry of TCMM, and including the time-space relationships and laws of substances dynamic accumulation. These data could provide the guidance for standardized production and guaranteed quality and yield of TCMM.
4.Value and difficulties in the application of measurement uncertainty for routine HbA1c assay
Zijie LIU ; Zhen JIN ; Yong DUAN
Chinese Journal of Laboratory Medicine 2014;37(12):884-886
Diabetes mellitus has became a growing public health problem,its acute and chronic complications threaten the patient's dramatically.HbA1c is recognized as the gold standard for blood glucose evaluation in patients with diabetes It has reported that the incideut rafe of diabetes related will decline remarkably when HbA1c decline by 1%,so the detection accuracy of the HbA1c is very important in the diabetes patient's management.Uncertainty of measurement can reflect the detation accuracy,which will benifite the value of HbA1c.
5.Relationship of blood pressure variability and heart rate variability with prostatic volume in patients with benign prostatic hyperplasia
Jiangli JIN ; Xiaoyun ZHENG ; Duan QIAN
Chinese Journal of Geriatrics 2014;33(5):477-480
Objective To investigate the relationship of blood pressure variability(BPV) and heart rate variability(HRV) with prostatic volume (PV) in patients with benign prostatic hyperplasia (BPH).Methods A total of 133 patients admitted to our department between January 2011 to April 2013 were analyzed retrospectively.The patients were divided into BPH group and non-BPH group according to the PV value.The ambulatory blood pressure monitoring was used to measure the blood pressure parameters,including 24-hour systolic blood pressure (SBP),24-hour diastolic blood pressure (DBP),day time systolic blood pressure(DSBP),day time diastolic blood pressure (DDBP),night systolic blood pressure (NSBP),night diastolic blood pressure(NDBP),the standard deviation of DSBP(DSBPSD),DDBPSD,NSBPSD,and NDBPSD.At the same time,heart rate variability was measured by 24 hours Holter monitor.The ambulatory electrocardiogram was used for calculating normal to normal intervals (SDNN),standard deviation of the averages of R-R internals in all 5-minute segments(SDANN),rate mean square of the differences of successive RR intervals(RMSSD),percentage of RR intervals differing >50 ms (PNN50%).The differences of the ambulatory blood pressure parameters or heart rate variability were compared between the two groups.Results The levels of 24-hour SBP,DSBP,and DSBP-SD were higher in the BPH group than in the non-BPH group[(126.03±14.66)mmHg (1 mmHg=0.133 kPa) vs.(118.88 ±10.79) mmHg,(126.97±14.46)mmHg vs.(119.94±11.24)mmHg,(12.52±3.85)mmHg vs.(11.04±2.44)mmHg,all P<0.05].All the parameters of HRV were significantly different between the two groups [(97.22±38.14)mmHg vs.(119.23±36.16)mmHg、(90.11±34.4)mmHg vs.(107.1144.4)mmHg、(19.11±2.76)mmHg vs.(31.96±21.10)mmHg、(2.31±2.87)% vs.(5.02±4.88)%,all P<0.05]Conclusions The BPV and HRV are the important influencing factors for PV in BHP patients.
6.Automatic drift of the third molar after the extraction of the second molar
Yao LIU ; Yinzhong DUAN ; Zuolin JIN
Journal of Practical Stomatology 1995;0(04):-
Objective:To investigate the third molar horizontal and vertical drift automatically after the second molar extraction.Methods: 26 patients,aged 11~18 years old, with the indications of second morlar extraction were divided into two groups:15 cases in experimental group with the extraction of the second molar and 11 in control group without the extraction. A cephalometric radiograph of each patient was traced on before and 9 months after treatment. Vertical and horizontal drift and mesio- angulation of the third molar were measured.Results:The third molar vertical mesio-movement (mm)in experimental and control groups was 7.08?2.04 and 2.09?0.47(P
7.The effect of acupuncture combined with auricular application for puerperal hypogalactia
Xuetao DUAN ; Meng MA ; Jin LIU
Chinese Journal of Primary Medicine and Pharmacy 2017;24(1):60-63
Objective To observe the effect of acupuncture and auricular application in the treatment of puerperal hypogalactia.Methods 300 patients with puerperal hypogalactia,according to the principle of random, balanced,together,were divided into 3 groups:Chinese herbal medicine group and acupuncture combined with auricular group and massage group,each group in 1 00cases.Collected patients'informed consent,and obtained the hospital ethics committee approval.The clinical curative effect was observed.Results After 3 days,in the Chinese herbal medicine group 34 cases recovered,24 cases were markedly effective,efficient in 1 5 cases,27 cases were invalid.In the massage group 7 cases recovered,1 3 cases had marked effect,1 5 cases were effective,ineffective in 65 cases.In the acupuncture combined with auricular group 73 cases cured,1 3 cases were markedly effective,effective in 9 cases, 5 cases were ineffective.The total effective rate between the acupuncture combined with auricular group and Chinese herbal medicine group had significant difference(χ2 =9.600,P <0.01 ).The total effective rate between the acupuncture combined with auricular group and the massage group had significant difference (χ2 =1 3.400,P <0.01 ).The total effective rate between Chinese herbal medicine group and massage group had significant difference (χ2 =6.400,P <0.01 ).Conclusion Acupuncture and auricular application has obvious curative effect for patients with postpartum hypogalactia.
8.Brief Discussion on the Economic Value of Applying for Patent and Know-how for Traditional Chinese Medicine
Huimin DUAN ; Lihua SUN ; Danfeng JIN
China Pharmacy 2005;0(19):-
OBJECTIVE:To compare the economic value between patent application and know-how,the two measures for intellectual property rights protection of traditional Chinese medicine.METHOD:The legal features of intellectual property rights protection for Chinese traditional medicine were analyzed and its economic value was evaluated with economic model.RESULTS&CONCLUSION:The know-how has a greater economic value to enterprises under the current intellectual property rights protection system.
9.The perioral muscle pressure of the adults with skeletal crossbite
Jun LENG ; Yinzhong DUAN ; Jun JIN
Journal of Practical Stomatology 2001;0(01):-
Objective:To study the characters of perioral muscle p re ssure of the adult patients with skeletal crossbite. Methods:20 patients were diagnosed to be with skeletal crossbite. The perioral muscle press ures on upper and lower central incisors, first molars and cuspids were measured buccally and lingually at rest position. 10 health adults were served as the co ntrols. Results:The perioral force in skeletal crossbite group was larger than that in the control group on the correspondence area(P0.05). In the skeletal cross bite group, the perioral force on the mandibular area was larger than that on th e correspondence maxillary area(P0.05). The muscle pressure on the labial side was larger than that on t he lingual correspondence side in both groups(P
10.Construction and identification of mcpr1 gene eukaryotic expressing vector
Xiaoyan DUAN ; Yan JIN ; Xin LI
Journal of Practical Stomatology 2001;0(01):-
Objective: To construct a high effective eukaryotic expre ss ing vector containing mcpr1 gene. Methods: mcpr1 gene w as amplified by PCR from the plasmid T-easy/ mcpr1, then PCR product was in serted into eukaryotic expressing vector pcDNA3.1/V5-His B. The positive recomb inant was identified by PCR analysis, HindIII and BamHI restriction analysis and Sequence analysis. Results: A 400 bp DNA fragment was amplified from the recombinant. Sequence analysis and restriction digest demonstrated tha t the mcpr1 gene was successfully inserted into pcDNA3.1/V5-His B plasmid. Conclusion: The eukaryotic expressed vector pcDNA3.1/V5-His B/ mcpr1 has been successfully reconstructed.