Umbilical cord milking on neonatal outcomes following cesarean section: a meta-analysis / 中华围产医学杂志

Objective:To evaluate the effect of umbilical cord milking (UCM) on neonatal outcomes after cesarean section.Methods:Chinese and English databases (including CNKI, Wanfang, China Biology Medicine Disc, VIP, Yiigle, PubMed, Embase, CINAHL, Web of Science, the Cochrane Library, and Google Scholar) and ClinicalTrials.gov were retrieved from the inception to July 2023. Randomized controlled trials regarding UCM in neonates from different races who were born by cesarean section were included. The outcomes were postnatal hemoglobin level, hematocrit value, peak serum bilirubin level, phototherapy, cord blood pH value, intraventricular hemorrhage, death, polycythemia, neonatal necrotizing enterocolitis, and Apgar score. The risk of bias among the included studies was confined to low or possible risk according to the Cochrane Risk of Bias Assessment Tool 2.0. RevMan5.3 was used for meta-analysis, and subgroup analysis was performed among neonates with different gestational ages. The certainty of evidence was evaluated using the grades of recommendations assessment, development, and evaluation (GRADE) framework.Results:A total of 11 articles involving 2 347 neonates (1 322 full-term and 1 025 preterm infants) were included. Meta-analysis results showed that: (1) Compared with the immediate cord clamping, UCM increased the hemoglobin level within 24 h and 48-72 h after birth ( MD=1.40, 95% CI: 1.11-1.70, Z=9.32; MD=0.86, 95% CI: 0.69-1.02, Z=10.02, both P<0.01), hematocrit value within 24 h and 48-72 h after birth ( MD=2.73, 95% CI: 0.18-5.29, Z=2.09, P=0.04; MD=3.57, 95% CI: 2.29-4.85, Z=5.46, P<0.01). However, no significant differences were found in the peak bilirubin level, phototherapy, cord blood pH, and Apgar score at 1 and 5 min (all P>0.05). (2) Compared with delayed cord clamping, UCM increased the hemoglobin level ( MD=0.83, 95% CI: 0.75-0.91, Z=20.11, P<0.01) and hematocrit value ( MD=2.34, 95% CI: 1.25-3.43, Z=4.20, P<0.01) within 24 h after birth, but not in the hematocrit value at 48-72 h after birth ( MD=－0.38, 95% CI:－2.27-1.52, Z=0.39, P=0.70) or the peak bilirubin level ( MD=－0.65, 95% CI:－2.16-1.04, Z=0.69, P=0.49). Sensitivity analysis showed that for full-term neonates born by cesarean section, the peak bilirubin level in the UCM group was significantly lower than that in the delayed cord clamping group ( MD=－1.30, 95% CI:－2.26-0.34, Z=2.66, P<0.01). Still, the incidence of phototherapy, intraventricular hemorrhage (grade Ⅰ-Ⅳ), death, polycythemia, neonatal necrotizing enterocolitis, and Apgar score at 1 min and 5 min showed no statistical differences (all P>0.05). Conclusions:UCM could increase the short-term postnatal hemoglobin and hematocrit levels in neonates born by cesarean section, which might prevent neonatal anemia in the short term without increasing the adverse neonatal outcomes. Little effects were observed on the peak bilirubin level, phototherapy, polycythemia, etc. More high-quality and large-sample randomized controlled trials are needed in the future.

A Research Progress and the Prospective of Hirudo Nipponica / 世界科学技术-中医药现代化

Hirudo nipponica Whitman,a Chinese medicine which has a strong effect on platelet aggregation and antithrombin activity,is involved in the studies.The current situation is adverse to the cultivation,development and utilization of H.nipponica.Prior to summarizing the current research status and the unresolved problems and the prospective of H.nipponica,domestic and foreign literatures over the H.nipponica was discussed and judged,aiming at providing a reference for the comprehensive development and utilization of H.nipponica.

Expression of subtilisin-like protease gene from Hirsutella sinensis before and after infecting Hepialus gonggaensis / 药学学报

To address the role of Pr1 gene in the process of Hirsutella sinensis infecting Hepialus gonggaensis, differential expression of subtilisin-like protease gene was detected. In the present study, Pr1 gene analogues from H. sinensis were obtained by PCR strategy using specific primers designed from conserved regions of Pr1 gene reported in the GenBank. Then we detected the changes in the expression of Pr1 gene before and after infecting H. gonggaensis using real-time quantitative PCR. We obtained the partial sequence of Pr1 gene with the length of 535 bp (GenBank accession: KC009680). Real-time PCR results showed that the expression level of Pr1 gene was significantly different among 8 samples (P < 0.01). Pr1 gene showed the obvious higher expression level (2-3 folds) after infecting the H. gonggaensis, suggesting that the Pr1 gene may play an important role in the process of H. sinensis infecting H. gonggaensis. The present study paves a way for further identification on infectivity assessment of H. sinensis.

Relevance analysis of amino acid contents in cultivated Cordyceps and cultivation materials / 中国中药杂志

<p><b>OBJECTIVE</b>To clarify the relevance of amino acid content in cultivated Cordyceps and cultivation materials.</p><p><b>METHOD</b>The content of amino acid was determined with L-8800 amino acid analyzer, and the relevance of amino acid content was analyzed with SPSS.</p><p><b>RESULT AND CONCLUSION</b>Except mycelium of the C. sinensis or the blood-lymph of the larva, the cultivated Cordyceps and the main relevant cultivation materials had detected to contain all kinds of amino acids. Except among the mycelium, the blood-lymph of the larva, the part of the larva or of the stroma of cultivated Cordyceps, there was distinct relevance of amino acid contents in cultivated Cordyceps and the cultivation materials (P<0.01).</p>

Study on biological character of Hepialus introduced from Yunnan province / 中国中药杂志

<p><b>OBJECTIVE</b>To study the biological character of Hepialus introduced from Yunnan province.</p><p><b>METHOD</b>H. jianchuanensis introduced from Yunnan was bred artificially to observe its biological character.</p><p><b>RESULT</b>The pupa duration was about 40 d, pupa emergence lasted for one day, female to male ratio was about 1.2:1, the mating peak was 19:30-20:30, the adults duration was about 25 d, the average life time of female was 5-6 d and that of male 6-7 d, the average number of the producing egg was about 300, the average weight of the 100 eggs was 10.33 mg. Lasting period of the larva is 350 d and the infancy larva showed the character of the polyphagy and cold endurance.</p><p><b>CONCLUSION</b>Results indicate that there are some differences in the whole duration, weight of the 100 eggs and the number of the eggs left in the abdomen between H. jianchuanensis and others bred at the Kangding base.</p>

Optimization on Oil Suspension Formulation of Cordyceps sinensis Spawn / 微生物学通报

The particularities of oil suspension formulation can raise the invasive rate of Hirsutella sinensis to host of Hepialidae for the commercialization of artificial cultivation of Cordyceps sinensis. So it is important to develop a high cell viability oil suspension formulation of C. sinensis spawn. According to the characteristics of the oil suspension formulation, MTT assay is adapted and optimized. The result is as follows: reaction time 120 min, reaction temperature 37?C, methylbenzene as extracting agent, and a positive linear correlation established between active cell weights and cell viability. Varieties and concentrations of assistance agents in oil suspension formulation have been selected with the refined MTT assay, and further optimized together with cell concentrations through orthogonal experiment. The optimal combination project was obtained, namely, cell concentration 0.15 g/mL, aluminium stearate 60 mg/mL, and SPAN-80 50 ?L/mL. Results of stability test on the oil suspension formulation indicate that cell viability can maintain above 90% at 4?C after one month.

Comparison of the Mannitol Content in Cordyceps From Different Growing Areas / 中国药房

OBJECTIVE:To gain clear idea of influence of multiorigins of Cordyc ep s on quality and nature of this drug.METHODS:The mannitol contents in the Cordy ceps samples collected from different growing areas were determined and compared ,and their MDR(Mutual Different Rate)was analyzed.RESULTS:The MDRs among specim ens from Sichuan,Tibet and Yunnan were 0.012～0.32 and the MDRs among the Cordyc eps samples from different micro-ecological environment were 0.037～1.36.CONCLU SION:On the mannitol content in Cordyceps,the effect of the species diversity a nd the micro-ecological environment might exceed that of district and climate d ifference.

Scavenging effect of Cordyceps growing in different environment on hydroxyl radical / 中草药

Object To investigate and compare the scavenging effect of Cordyceps growing in different environment on hydroxyl radical. Methods 10-Phennanthroline-Fe 2+ oxidative assay was used to observe the effect of scavenging hydroxyl radical from H_2O_2/Fe 2+ system by the aquenous extracts of Cordyceps. Results Cordyceps from Naqu of Xizang,northwest Yunnan,and northwest Sichuan all showed us the significant effect on scavenging of hydroxyl radical produced from Fenton Reaction. The biggest values of MDR among Cordyceps specimens from various microecological environment surpassed that among specimens of Naqu of Xizang,northwest Yunnan,and northwest of Sichuan. Conclusion The aquenous extracts of Cordyceps could scavenge the hydroxyl radical from Fenton Reaction. The microecological environment for Cordyceps growing has an significant effect on its scavenging action.

Effect of plant growth regulator on medicinal constituent of Dendrobrium nobile / 中草药

Object To study the effect of plant growth regulator on medicinal constituents of Dendrobrium nobile Lindl Methods The root of D nobile was treated by immersing in solutions of plant growth regulator 6 BA and GA 3 Results and Conclusion Both plant growth regulator at certain concentration, resulted in an increase of total soluble sugar content, but without effect on the content of dendrobine GA 3 can significantly elevate the content of total alkaloid in D nobile