Search

Copyright of Fudan University Journal of Medical Sciences is the property of Fudan University Journal of Medical Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Fudan University Journal of Medical Sciences is the property of Fudan University Journal of Medical Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Fudan University Journal of Medical Sciences is the property of Fudan University Journal of Medical Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To investigate the effect of cesarean scar defect (CSD)on subsequent pregnancy outcome. Method Fifty-six pregnant women with CSD and 253 without CSD who delivered during 2013 and 2018 at Obstetrics and Gynecology Hospital，Fudan University were chosen and divided into two groups. Clinical data of the maternal and the newnatal in the two groups were collected and retrospectively analysed. Results There was no signifcant difference between the two groups in newnatal apgar score and the incidence of preterm birth，placenta adhesion，postpartum hemorrhage or utertine.CSD group had a higher rate of IVF-ET pregnancy，prolonged menstruation and abnormal lower uterine segment during caserean section and the birthweight of newborns was lighter. Data of CSD in 21 women in CSD group were available and depths of CSD were deeper in those who didn’t have prolonged menstruation. There was no significant difference between women with and without abnormal lower uterine segment in the length，width，depth and thickness of residual tissue of CSD.Binary logistic regression analysis indicated that CSD wasn’t correlated with infertility and CSD depth wasn’t correlated with prolonged menstruation. Conclusion CSD could cause prolonged menstruation which wasn’t correlate with CSD depth. CSD increased the incidence of abnormal lower uterine segment. CSD might not have an adverse effect on subsequent pregnancy outcome. [ABSTRACT FROM AUTHOR]

With the rapid development of the internet and artificial intelligence,the concept of "internet +" becomes more and more common,and the artificial intelligence is also changing our lives."Internet + medicine" means the internet plus traditional medicine.This is not the simple addition of the two concepts,but means using the internet technology,combing the internet and traditional medicine together.There are many problems existing in traditional gynecologic tumor managements,including uneven distribution of the patients,repeated tests and long management cycles.In "internet +"era,these problems may be solved.In this review,we focused on how to use related technology to prevent genecologic tumors in three levels,and what we need to know on information safety,technical bottleneck and quality control problems. [ABSTRACT FROM AUTHOR]

To investigate the residue and dissipation of albendazole in tobacco and provide reference for the setting of maximum residue limit (MRL), an analytical method and a good agricultural practices (GAP) experiment of albendazole residues in tobacco were established and had been tested for samples by using QuEChERS and high performance liquid chromatography-tandem triple quadrupole mass spectrometry (HPLC-MS/MS). Good linearity between the mass concentration of albendazole and the corresponding peak area was achieved from 0.001 to 1 mg/L, with a coefficient of determination higher than 0.998. At three addition levels of 0.02, 0.2 and 2 mg/kg, the recoveries of albendazole in fresh tobacco leaves ranged from 94% to 97%, with the relative standard deviation (RSD) was 1.2%-2.7%. At three addition levels of 0.01, 0.1 and 2 mg/kg, the recovery of albendazole in cured tobacco leaves were 85%-104%, with the RSD was 2.0%-8.1%. If the lowest spiked concentration was recognized as the limit of quantitation (LOQ), the LOQs of albendazole in cured tobacco leaves and fresh tobacco leaves were 0.01 and 0.02 mg/kg, respectively. The dissipation and terminal residue levels of albendazole in tobacco demonstrated that the half-life of albendazole in fresh tobacco leaves was 5.4 to 16.1 days. When sprayed at 90 and 135 g a.i./hm2 for three times, the terminal residues of albendazole in cured tobacco leaves at the pre-harvest interval of 7, 14 and 21 days were 0.14-3.04 mg/kg, 0.33-2.20 mg/kg and 0.17-1.85 mg/kg, respectively. It is recommended that the MRLs should be 2 mg/kg. The pesticide should be used in accordance to the recommended dosage and application interval. 21 days after the last spray, the residue was less than 2 mg/kg, which demonstrated that the residual risk level was low. [ABSTRACT FROM AUTHOR]

An analytical method for the determination of sedaxane residues in brown rice was established by QuEChERS and liquid chromatography-tandem mass spectrometry (LC-MS/MS). The samples were extracted with a mixture of acetonitrile and water (80/20, V/V), purified by dispersion solid phase extraction with PSA as sorbent, and quantified using LC-MS/MS by external standard method. The results showed that good linearity was obtained in the range from 0.001 to 0.1 mg/L, with R2 > 0.996. At the fortified levels of 0.004, 0.01 and 0.1 mg/kg, the recoveries of sedaxane in brown rice samples were 83%-95% with the relative standard deviations (RSD) of 3.9%-12%. The limit of quantitation (LOQ) was 0.004 mg/kg in brown rice samples, which was significantly lower than the maximum residue limit (MRL) of 0.01 mg/kg set by the Codex Alimentarius Commission. The proposed method is simple, accurate and sensitive. Hence, it could be used for the detection of sedaxane residues in brown rice. A market survey of 40 brown rice samples from 6 provinces was carried out, and the residual amount of sedaxane was less than 0.004 mg/kg in all samples. The dietary risk assessment showed that the use of sedaxane in rice was currently at a low risk in China. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Pesticide Science / Nongyaoxue Xuebao is the property of Chinese Journal of Pesticide Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objectives]The purpose of this research is to obtain an efficient rapid propagation and leaf regeneration system of pear. [Methods] Taking stems of pear variety ' Xuehuali' as materials, the optimal medium lor propagation was evaluated by bud proliferation rate and plant height through adjusting the 6-benzyladenine(6-BA) and indole-3-1 mtytric acid (IBA) ratio. The leaves of 'Xuehuali' were used as explants, a high-efficiency system for leaf regeneration was constructed by comparing the effects of basal medium types, leaf inoculation ways, hormone types and concentration, and dark incubation time on leaf regeneration rate, callus incidence, average regeneration-bud number per leaf and browning rate. [Results] The results showed that the optimal medium for 'Xuehuali' propagation was MS medium containing 1.0 mg·L-16-BA and 0.3 mg·L-1BA, the bud proliferation rate was 4.1 and the plant height was 2.66 cm. The optimal medium for leaf regeneration of ' Xuehuali' was NN69 medium containing 1.5 mg·L TDZ( thidiazuron) and 0.2 mg·L IBA. The leaf regeneration rate was achieved at 70.83%, the average regeneration-bud number per leaf was 2.06, coupled with 1(X)% of callus incidence and zero of browning rate. The leaf regeneration rate was improved when the abaxial side of leaf touched the medium, and the highest regeneration rate was observed under the treatment of 21 days dark incubation. The tissue browning could be effectively prevented through shortening the lime of dark incubation and increasing the content of eytokinin and auxin. The optimal medium for the primary culture of regeneration-bud was MS medium containing 0.2 mg·L-1 IBA and 1.0 mg-L-1 6-BA. [Conclusions]This research achieved a high-efficiency propagation system and leaf regeneration system, which laid an effectively theoretical and practical basis for rapid propagation and genetic transformation of ' Xuehuali' and provided a valuable reference to the solution of the problem of browning in leaf regeneration of pear. [ABSTRACT FROM AUTHOR]