Analysis of the causes of long-standing pelvic anterior sacral space infection and discussion of management techniques / 中华肿瘤杂志

Objective: To investigate the causes and management of long-term persistent pelvic presacral space infection. Methods: Clinical data of 10 patients with persistent presacral infection admitted to the Cancer Hospital of Zhengzhou University from October 2015 to October 2020 were collected. Different surgical approaches were used to treat the presacral infection according to the patients' initial surgical procedures. Results: Among the 10 patients, there were 2 cases of presacral recurrent infection due to rectal leak after radiotherapy for cervical cancer, 3 cases of presacral recurrent infection due to rectal leak after radiotherapy for rectal cancer Dixons, and 5 cases of presacral recurrent infection of sinus tract after adjuvant radiotherapy for rectal cancer Miles. Of the 5 patients with leaky bowel, 4 had complete resection of the ruptured nonfunctional bowel and complete debridement of the presacral infection using an anterior transverse sacral incision with a large tipped omentum filling the presacral space; 1 had continuous drainage of the anal canal and complete debridement of the presacral infection using an anterior transverse sacral incision. 5 post-Miles patients all had debridement of the presacral infection using an anterior transverse sacral incision combined with an abdominal incision. The nine patients with healed presacral infection recovered from surgery in 26 to 210 days, with a median time of 55 days. Conclusions: Anterior sacral infections in patients with leaky gut are caused by residual bowel secretion of intestinal fluid into the anterior sacral space, and in post-Miles patients by residual anterior sacral foreign bodies. An anterior sacral caudal transverse arc incision combined with an abdominal incision is an effective surgical approach for complete debridement of anterior sacral recalcitrant infections.

Death-Related Factors in Patients With Acute Exacerbation of Chronic Obstructive Pulmonary Disease Treated by Sequential Mechanical Ventilation / 中国医学科学院学报

Objective To analyze the death-related factors of elderly patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD) treated by sequential mechanical ventilation,so as to provide evidence for clinical practice. Methods The clinical data of 1204 elderly patients (≥60 years old) with AECOPD treated by sequential mechanical ventilation from June 2015 to June 2021 were retrospectively analyzed.The probability and influencing factors of death were analyzed. Results Among the 1204 elderly patients with AECOPD treated by sequential mechanical ventilation,167 (13.87%) died.Multivariate analysis showed that plasma procalcitonin ≥0.5 μg/L (OR=2.762, 95%CI=1.920-3.972, P<0.001),daily invasive ventilation time ≥12 h (OR=2.202, 95%CI=1.487-3.262,P<0.001),multi-drug resistant bacterial infection (OR=1.790,95%CI=1.237-2.591,P=0.002),oxygenation index<39.90 kPa (OR=2.447,95%CI=1.625-3.685,P<0.001),glycosylated hemoglobin >6% (OR=2.288,95%CI=1.509-3.470,P<0.001),and acute physiology and chronic health evaluation Ⅱ score ≥25 points (OR=2.126,95%CI=1.432-3.156,P<0.001) were independent risk factors for death in patients with AECOPD treated by sequential mechanical ventilation.Oral care>twice/d (OR=0.676,95%CI=0.457-1.000,P=0.048) and sputum excretion>twice/d (OR=0.492, 95%CI=0.311-0.776, P=0.002) were independent protective factors for death in elderly patients with AECOPD treated by sequential mechanical ventilation. Conclusions The outcomes of sequential mechanical ventilation in the treatment of elderly patients with AECOPD are affected by a variety of factors.To reduce the mortality,we put forward the following measures:attaching great importance to severe patients,restoring oxygenation function,shortening unnecessary invasive ventilation time,controlling blood glucose,preventing multidrug resistant bacterial infection,oral care twice a day,and sputum excretion twice a day.

Advances in online two-dimensional liquid chromatography for natural product screening / 药学学报

As a treasure resource of novel drug lead compounds, how to rapidly and high-efficiently screen and isolate active components from natural products is critical. Thanks to its high resolution, high automation and flexible integration, online two-dimensional liquid chromatography has great potential for screening active ingredients from complex matrices by integrating a highly specific bio-recognition process into a two-dimensional liquid chromatography system before, on or after the column separation. This review comprehensively summarized recent developments, applications and shortcomings of online two-dimensional liquid chromatography for natural product screening from different integration modes, including pre-column, on-column and post-column screening methods.

Relationship between home literacy environment and emotional regulation in children: the mediating effect of the parent-child relationship / 中国当代儿科杂志

OBJECTIVES@#To study the impact of the home literacy environment on children's emotional regulation skills and the mediating role of the parent-child relationship between them.@*METHODS@#A stratified cluster sampling approach was employed to select 1 626 preschool children from five kindergartens in Nanjing. Questionnaires were used to collect detailed information on the home literacy environment, children's emotional regulation skills, and the parent-child relationship. A mediation model was established using the Process program in SPSS macro, and the significance of the mediation effect was tested using the Bootstrap method.@*RESULTS@#The findings revealed a positive correlation between the home literacy environment and children's emotional regulation skills (r=0.217, P<0.001), as well as parent-child intimacy (r=0.065, P<0.01). Conversely, a negative correlation was found between the home literacy environment and parent-child conflict (r=-0.129, P<0.001). Additionally, parent-child conflict demonstrated a negative correlation with children's emotional regulation skills (r=-0.443, P<0.001), while parent-child intimacy exhibited a positive correlation (r=0.247, P<0.001). The home literacy environment exerted a significant direct effect on children's emotional regulation skills (β=0.162, P<0.001), and the mediating effect of the parent-child relationship accounted for 25.54% of the total effect.@*CONCLUSIONS@#The home literacy environment significantly influences children's emotional regulation skills, with the parent-child relationship partially mediating this relationship.

A new method of anterior talofibular ligament reconstruction: Arthroscopically artificial ligament reconstruction with tensional remnant-repair / 中华创伤杂志(英文版)

PURPOSE@#To investigate the clinical effects of arthroscopically artificial ligament reconstruction with tensional remnant-repair in patients who are obese, and/or with demand for highly intensive sports, and/or with poor-quality ligament remnants.@*METHODS@#A retrospective case series study was performed on patients treated by arthroscopically anterior talofibular ligament (ATFL) reconstruction with tensional remnant repair technique from January 2019 to August 2021. General data, including demographics, surgical time, and postoperative adverse events, were recorded. The American Orthopaedic Foot and Ankle Society score (AOFAS), foot and ankle ability measure (FAAM), visual analog scale (VAS), and anterior talar translation were measured preoperatively and at 6 weeks, 3 months, and 2 years postoperatively. Ultrasonography examination was performed preoperatively and 2 years postoperatively to evaluate the ATFL. Data were analyzed using SPSS 19.0. F test was used to analyze the pre- and postoperative VAS, FAAM, and AOFAS scores. The significance was set at p < 0.05.@*RESULTS@#There were 20 males and 10 females among the patients with a mean age of (30.71 ± 5.81) years. The average surgical time was (40.21 ± 8.59) min. No adverse events were observed after surgery. At 2 years postoperatively, the anterior talar translation test showed grade 0 laxity in all patients. VAS score significantly decreased from preoperatively to 6 weeks, 3 months, and 2 years postoperatively (p < 0.001). Improvement of FAAM score and the AOFAS score from preoperatively to 6 weeks, 3 months, and 2 years postoperatively was statistically significant (p < 0.001). At 3 months postoperatively, most patients (23/30) could return to their pre-injured activities of daily living status. At 2 years postoperatively, all patients were able to return to their pre-injured activities of daily living status, and almost every patient (18/19) who expected highly intensive sports returned to sports with only 1 obese patient failing to achieve the goal. The ultrasonography examination at 2 years postoperatively showed that there was a linear band structure of soft tissue on the tension-rich fiber tape image from the fibular to the talar attachment sits of ATFL.@*CONCLUSION@#The novel arthroscopically artificial ligament reconstruction with tensional remnant-repair technique for ATFL achieved satisfactory clinical outcomes in the short and medium term after operation, and allowed early return to pre-injured activities, which could be a reliable option for patients with chronic lateral ankle instability.

Research progress on plant-derived exosome-like nanoparticles and their applications / 中国中药杂志

Plant-derived exosome-like nanoparticles(PELNs) are a class of membranous vesicles with diameters approximately ranging from 30 to 300 nm, isolated from plant tissues. They contain components such as proteins, lipids, and nucleic acids. PELNs play an important role in the metabolism of plant substances and immune defense, and can also cross-regulate the physiological activities of fungi and animal cells, showing significant potential applications. In recent years, research on PELNs has significantly increased, highlighting three main issues:(1) the mixed sources of plant materials for PELNs;(2) the lack of a unified system for isolating and characterizing PELNs;(3) the urgent need to elucidate the molecular mechanisms underlying the cross-regulation of biological functions by PELNs. This article focused on these concerns. It began by summarizing the biological origin and composition of PELNs, discussing the techniques for isolating and characterizing PELNs, and analyzing their biomedical applications and potential future research directions., aiming to promote the establishment of standardized research protocols for PELNs and provide theoretical references for in-depth exploration of the mechanisms underlying PELNs' cross-regulatory effects.

Research on mixed teaching platform of pediatric clinical laboratory practice teaching based on the Laboratory Quality Management System / 中华医学教育探索杂志

Objective:To explore application of mixed teaching platform in the clinical practice teaching of the laboratory medicine in Children's hospitals.Methods:We constructed a mixed online and offline teaching platform based on the Laboratory Quality Management System (LQMS) in the Children's Hospital of Chongqing Medical University. The undergraduates from Batch 2016 ( n=15) and Batch 2018 ( n=12) of College of Laboratory Medicine of Chongqing Medical University were taken as control group and experimental group respectively. Traditional teaching method was adopted by the control group, and the mixed teaching method was adopted by the experimental group. The results of two groups' clinical practice assessment, rate of outstanding students (total score ≥ 90) and rate of satisfaction (score ≥ 90) were compared to evaluate the teaching effect. SPSS 17.0 was used to conduct t-test and Chi-square test. Results:The database of teaching platform includes 68 teaching cases, 198 pieces of courseware, 305 clinical cases and 3 036 atlases. The test bank has accumulated 4 657 tests, covering clinical laboratory, immunology, biochemistry, microbiology and blood transfusion. The results of students in experimental group were significantly better than those of the control group [the score of clinical practice assessment: (85.90±5.04) vs. (78.90±6.75)( P<0.05); rate of outstanding students: 33.3% (4/12) vs. 6.7% (1/15), P>0.05; rate of satisfaction: 86.7% (13/15) vs. 100.0% (12/12) ( P>0.05). Conclusion:The mixed online and offline teaching platform based on the LQMS is highly recognized by students and can significantly improve the effect of clinical practice teaching, which can provide typical medical case teaching at any time and make up for limited case type in children's hospital.

Determination of paclitaxel prodrug in SD rat plasma by LC-MS/MS and its application in preclinical pharmacokinetic studies / 药学学报

A fast and sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the determination of prodrug of paclitaxel (Pro-PTX) and paclitaxel (PTX) in rat plasma was developed. The plasma samples were subjected to protein precipitation with acetonitrile (0.1% formic acid), and then separated by LC with an Ultimate AQ-C18 column (50 mm × 3.0 mm, 3 μm) and acetonitrile-1 mmol·L-1 ammonium formate (containing 0.1% formic acid) as the mobile phase. Multiple reaction monitoring (MRM) scanning mode was used to detect the ion responses m/z 983.4→415.2 (Pro-PTX), m/z 854.4→286.1 (PTX) and m/z 808.3→527.2 (Docetaxel, internal standard) by using a triple quadrupole tandem mass spectrometer with electrospray ionization source and positive ion mode. The method validation results show that the linear ranges of Pro-PTX and PTX in plasma were 2.00-500 ng·mL-1 (r > 0.99) and 4.00-1 000 ng·mL-1 (r > 0.99), the lower limit of quantification was 2.00 ng·mL-1 and 4.00 ng·mL-1, respectively; the quality control samples with low, medium and high concentrations of Pro-PTX and PTX were within the batch, the relative standard deviation (RSD) between batches were all less than 9%; the relative deviation (RE) was within the range of ± 9%; In the stability test, both Pro-PTX and PTX in plasma were stable under various storage conditions. The method was sensitive, specific, and reproducible, and was suitable for the pharmacokinetic study of Pro-PTX in rats. Animal experiments were approved by the Ethics Committee of Laboratory Animal Management and Animal Welfare, Institute of Materia Medica, Chinese Academy of Medical Sciences (No.: 00003552).

Establishment of high-resolution bioassay profiling platform to screen α-glucosidase inhibitors from Malus hupehensis / 药学学报

italic>α-Glucosidase inhibitors play an important role in the treatment of diabetes. This study established a high-resolution bioassay profiling platform for rapidly screening α-glucosidase inhibitors in natural product extracts. Five α-glucosidase inhibitors were identified from Malus hupehensis, namely, 3-hydroxyphloridzin, quercetin-3-O-β-D-glucopyranoside, phloridzin, avicularin and quercitrin. The establishment and successful application of this platform provides a powerful tool for the efficient discovery of anti-diabetic active ingredients in complex systems.

Reconstuctive strategy of the defect of anterior rectus fascia and rectus abdominus muscle / 中华医学美学美容杂志

Objective:To discuss the reconstuctive strategy of the defect of anterior rectus fascia and rectus abdominus muscle in the clinical practice.Methods:Between November 2009 and Janurary 2020, clinical data of 24 female patients that underwent 29 anterior rectus fascia and rectus abdominus muscle reconstructions of defect were reviewed retrospectively. The median age was 42.5 years (range, 35-60 years), including 20 breast reconstructions, 2 pelvic reconstructions, 1 thoracic defect after tumor resection and 1 abdominal defect after tumor resection. According to the location and size of the anterior rectus fascia and rectus abdominus muscle defect, three reconstructive methods were applied: 6 direct clousres were applied if the width of defect was less than half of the anterior rectus fascia, 21 polypropylene mesh onlay reconstructions were applied for which the width of defect was or more than half of the anterior rectus fascia, and 2 direct suture closure were applied for the simple rectus abdominus muscle defect.Results:All the patients healed eventfully without abdominal wound complications, such as infection, hematoma, dehiscence. The patients were followed up for a median period of 30 months (range, 5-126 months). 1 patient died of breast cancer recurrence and matastasis at 36 months postoperatively. No patient developed a mesh infection or required mesh removal secondary to infection or foreign body reaction. There was no abdominal wall hernia, 1 patient developed abdominal bulge without further treatment because of no abdominal wall discomfort.Conclusions:The key of successful operation is different reconstructive methods applied to reconstruct the integrity and stability of abdominal wall, based on the location and size of the anterior rectus fascia and rectus abdominus muscle defect.

Accuracy of ultrasonic localization of cervical anatomy in predicting difficult laryngoscopy / 中华麻醉学杂志

Objective:To evaluate the accuracy of ultrasonic localization of cervical anatomy in predicting difficult laryngoscopy.Methods:A total of 91 patients, with body mass index of 18.2-25.7 kg/m 2, aged 18-75 yr, regardless of gender, with a head and neck mobility>90°, of American Society of Anesthesiologists physical status Ⅰ or Ⅱ, scheduled for elective surgery requiring oral tracheal intubation under general anesthesia, were included in the study.The position of cervical transverse process corresponding to vocal cords (T x), distance from combination of vocal cords to connecting wire of two anterior tubercles of transverse processes (DVA), length of genitoglossus muscle, and distance from skin to combination of vocal cords(DSV)were localized by ultrasound before anesthesia induction.Laryngoscopy was used to expose the glottis, and then endotracheal intubation was performed.Patients were divided into 2 groups according to Cormack-Lehane classification: non-difficult laryngoscopy group (group N) and difficult laryngoscopy group (group L). The areas under the receiver operating characteristic curve (AUC) were used to evaluate the accuracy of T x, DVA, length of genitoglossus muscle and DSV in predicting difficult laryngoscopy. Results:The AUC of T x, DVA, length of genitoglossus muscle and DSV in predicting difficult laryngoscopy was 0.748, 0.851, 0.839 and 0.845, respectively, the sensitivity was 70.83%, 75.00%, 79.17% and 87.50%, respectively, and the specificity was 89.55%, 89.55%, 86.57% and 83.58%, respectively, and the cut-off values were T 4, 4.43 cm, 3.81 cm and 0.72 cm, respectively.There was no statistically significant difference in the AUC of T x, DVA, length of genitoglossus muscle and DSV in predicting difficult laryngoscopy ( P>0.05). Conclusion:T x, DVA, length of genitoglossus muscle and DSV localized by ultrasound all can predict difficult laryngoscopy accurately.

Analysis on the factors that influence the treatment outcome of Tibetan nationality new smear-positive pulmonary tuberculosis patients in Qinghai Province / 中华疾病控制杂志

@#Objective To analyze the treatment outcome and related influencing factors of Tibet- an nationality new smear-positive pulmonary tuberculosis patients in Qinghai Province，so as to provide evidence for tuberculosis control and treatment among Tibetan population． Methods Statistical analysis was conducted on 5 564 Tibetan nationality new smear-positive pulmonary tuberculosis cases in Qinghai province who were reported in the China Tuberculosis Information Management System and approved to receive treatment from 2008 to 2017． The main influencing factors were detected by unconditional Logistic regression model analysis，dependent variable was successful treatment or not，independent variables were other factors related to the treatment outcome． Ｒesults The treatment success rate of Tibetan nationality new smear-positive pulmonary tuberculosis cases was 87. 1% ( 4 848 /5 564) ，and the adverse outcome rate was 12. 9% ( 716 /5 564) ． Unconditional Logistic regression model analysis indicated that non-full- course supervision management，living in agricultural and pastoral area，having severe disease，floating population，and age older than 60 years were risk factors of adverse outcome． The odds ratio( OＲ) 95% confidence interval( CI) of the above risk factors were 13. 044( 10. 671-15. 944) ，2. 305( 1. 703-3. 119) ， 2. 090( 1. 346-3. 243) ，1. 967( 1. 443-2. 682) ，and 1. 909( 1. 410-2. 586) ． Clinical consultation，farmers and herdsmen were protective factors． The OＲ( 95% CI) were 0. 451( 0. 375-0. 543) ，and 0. 786( 0. 627- 0. 985) ． Conclusions Treatment success rate of Tibetan nationality new smear positive pulmonary tuberculosis cases was low． Therefore，the directly observed treatment short-course ( DOTS) strategy should be strictly implemented and the full-course supervision management should be strengthened to improve the treatment success rate． More attention should be paid to the elderly，severe，floating，agricultural and pastoral populations among the Tibetan population．

Effects of drought stress on glandular trichomes,stomatal density and volatile exudates of Schizonepeta tenuifolia / 中国中药杂志

In this research,we explored the effect of three groups of water treatments,including severe drought(the corresponding water content of cultivated substrate 5%-10%),moderate drought(45%-50%) and control(85%-90%),and different drought stress time(15,30,45 d) on the glandular trichome density(TD),stomatal density(SD) and volatile exudates of Schizonepeta tenuifolia.The results showed that there were two kinds of glandular trichomes on the surface of S. tenuifolia leaves: peltate and capitate glandular trichomes. The density of capitate glandular trichomes(CTD) was higher than that of peltate glandular trichomes(PTD). Both CTD and PTD on the abaxial surface of leaf were higher than those on the adaxial surface. Under severe drought stress,the CTD and SD were higher than the other two treatments. Under the same stress time,the biomass and leaf surface area of S. tenuifolia decreased with the deepening of stress degree. As the stress time prolonged,the surface area of leaves and biomass gradually increased,and the TD and SD decreased. The most abundant compound in volatile exudates of S. tenuifolia was pulegone. Under drought stress,the relative content of pulegone decreased,and the relative content of other monoterpenoids such as D-limonene and menthone increased. The n-hexadeconic acid and 2-methyl-1-hexadecanol were detected only at the stress of 15 d,while menthone was detected at the stress of 30 d and45 d. Drought stress affected the leaf growth and secondary metabolism of S. tenuifolia.

Questionnaire survey and analysis of implementability of clinical practice guidelines for acupuncture-moxibustion / 中国针灸

The current usage and the existing problems in the implementability of clinical practice guidelines for acupuncture-moxibustion were investigated by questionnaire survey, aiming to provide reference for the development or update of clinical practice guidelines for acupuncture-moxibustion in the future. The results showed most of the acupuncture-moxibustion clinicians did not have a deep understanding of the guidelines, but they had a strong will of uniform standards and related guidelines. Although the published clinical practice guidelines for acupuncture-moxibustion achieved some success, they still had not got rid of the shackles of the previous textbook. The main existing problems in the guidelines included insufficient promotion, poor credibility, no evaluation criteria for curative effect, and lack of consideration for patients' will, etc. As the guidelines for acupuncture-moxibustion were based on the latest evidence of current clinical research, it reflected the low quality of current clinical research on acupuncture-moxibustion and lacking of evidence-based concept among acupuncture-moxibustion clinicians. The implementability of clinical practice guidelines is a key step in evidence-based translational medicine, while the research on the implementability of acupuncture-moxibustion guidelines is still blank. More attention should be paid to this field in the future.

Analysis on mechanisms and medication rules of herbal prescriptions for nonalcoholic fatty liver disease based on methods of data mining and biological information / 中国中药杂志

To explore the medication rules of herbal prescriptions for nonalcoholic fatty liver disease,and analyze the possible drug targets and interactions,in order to explore the mechanisms of the herbs. Randomized controlled trials of herbal prescriptions for treating nonalcoholic fatty liver disease were collected from CNKI,Wan Fang,VIP,Sino Med and PubMed databases. The properties,flavors and meridian tropism of herbs were analyzed by using systematic cluster analysis method with SPSS 19. 0 software. Subsequently,the association rules of herbs were analyzed by using Clementine 12. 0 software. Finally,the interactions between targets and relevant signaling pathways were analyzed by Traditional Chinese Medicine Systems Pharmacology Database(TCMSP),Search Tool for the Retrieval of Interacting Genes/Proteins(STRING) and Kyoto Encyclopedia of Genes and Genomes(KEGG). In the 88 prescriptions screened out,the commonly used herbs were Salvia miltiorrhiza,Bupleurum chinense,Alisma orientale,and Crataegus pinnatifida,and the potential signaling pathways were PPAR signaling pathway and calcium signaling pathway. The results showed that the main effects of herbal prescriptions were to improve blood flow/clear blood stasis,clear heatiness/dampness,promote digestion and strengthen spleen. And its mechanism of action may be achieved through the regulation of PPAR signaling pathway and calcium signaling pathway.

Response of growth and photosynthetic characteristics of Polygonatum cyrtonema to shading conditions / 中国中药杂志

The purpose of this experiment was to study the effects of different shading conditions on the growth,physiological characteristics and biomass allocation of Polygonatum cyrtonema,which offered a theoretical basis for its cultivation.Different light environments(100%,80%,60% and 35% light transmittance) were simulated with shading treatments.Growth and photosynthetic indexes of P.cyrtonema were measured and the variances were analyzed.The results show that shading decreased superoxide anion radical(O-·2)production rate and hydrogen peroxide(H_2O_2) accumulation,kept the activity of SOD,POD and CAT enzyme at a high level.Furthermore,The content of chlorophyll a and chlorophyll b,net photosynthetic rate(Pn),stomatal conductance(Gs),transpiration rate(Tr),maximal photochemical efficiency of photosystem Ⅱ(Fv/Fm),photochemical quenching index(q P) and effective quantum yield of photosystem II(ΦPSⅡ) of P.cyrtonema were increased while the intercellular CO2 concentration(Ci),Foand NPQ were decreased by shading.Shading is beneficial to P.cyrtonema growth,can increase the total biomass P.cyrtonema.The allocation proportion of biomass on the aerial portion of P.cyrtonema increased but underground parts decreased with increasing shading conditions.In this study,P.cyrtonema can grow well in shading conditions,shading is beneficial to the formation of the yield and quality of the rhizomes of P.cyrtonema,especially in 65% light transmittance.

The preliminary application of 3-dimensional visual technique without eyepiece in repairing breast defect af-ter radical mastectomy in 2 cases of breast cancer / 中华显微外科杂志

To investigate the possibility of microsurgical anastomosis of artery, vein and lymphat-ic vessel under 3-dimension screen without eyepiece. Methods During March, 2019, 2 cases (48 and 62 years old) were operated for breast reconstruction, chest wall deformity modified, and axillary scar contracture release, under 3-dimension screen without eyepiece.Deep epigastric artery perforators (artery and vein) dissections were carried on, and microsurgical anastomosis of artery, vein and lymphatic vessel were finished. Coupler was used to do the end-to-end anastomosis of veins (2.5 mm), interrupted suture end-to-end anastomosis with 9-0 nylon for artery (2.0 mm). Reverse arm lymphatic dynamic fluorescence methylene blue tracer under Near Infrared Imaging was used to test the func-tion of lymphatic system. The ends of 2 dominant drainage lymphatic vessels was found in the released axillary area (0.2 mm and 0.3 mm, respectively), and were anastomosis to the vein (0.5 mm) of lateral chest lymphatic tissue.Im-mediate methylene blue tracer under near infrared imaging was used to confirm the patency of lymphatic vessels-veins anastomosis and follow-up post operation. Flap were monitored use HHD. Results Two patients recovered well, and the flaps survived completely with appreciated appearances. The lymphedema of the arms were getting better, the peripheral diameter was reduced by about 2.0 cm compared with that before operation. Conclusion The technique of microsurgical anastomosis of artery, vein and lymphatic vessel without eyepiece under 3-dimension screen is possi-ble and safe.

Application of an effective model in intraoral facial skeletal contour surgeries / 中华整形外科杂志

Intraoral facial contour surgery is one of the most popular craniofacial cosmetic surgeries in China, in spite of its challenging surgical technique and serious complication, such as fracture and bleeding. In addition, the key point, such as inadequate tissue exposure and high soft tissue tension cannot be simulated using traditional three-dimensional model. Consequently, craniomaxillofacial surgery requires a long learning curve for young surgeons. This article describes the establishment and application of a new model for intraoral facial contour surgery. Compared to young surgeons trained using traditional three-dimensional model, the authors confirmed this new surgical model is more reliable and effective. Therefore, it is worthy of being popularized.

Clinical efficacy of two different tricuspid annuloplasty techniques in left cardiac valve surgery

Objective: To investigate the mid-and long-term clinical effects of tricuspid valvuloplasty with the implantation of an artificial plastic ring. Methods: Data of 677 patients who had functional tricuspid regurgitation and left cardiac valve disease and underwent tricuspid valvuloplasty and left cardiac valve surgery were retrospectively. Among these patients, 353 underwent simple suture annuloplasty (group A) while the rest 324 patients underwent artificial plastic ring annuloplasty (group B). The two-year and more-than-two-year clinical and ultrasonocardiograph (UCG) follow-up data of the two groups were obtained and compared. Results: A total of 600 patients (88.6%) completed the long-term follow-up (more than two years). The two-year follow-up showed no significant difference in the incidence of mild tricuspid regurgitation between the two groups (82.2% vs. 92.7%, P=0.37). However, there were significantly more cases that developed into moderate to severe tricuspid regurgitation in group A than in group B (17.8% vs. 7.3%, P=0.031). The long-term follow-up revealed that the recurrence rate of tricuspid regurgitation in group B was significantly lower than that in group A (11.0% vs. 25.0%, P=0.029), and the ratio of cases developing into moderate to severe tricuspid regurgitation in group A was significantly higher than that in group B (28.9% vs. 9.9%, P=0.007). The comparison between the two intra-group time segments showed that the development of tricuspid regurgitation in group A was significantly increased (28.9% vs. 17.8%, P=0.022), but in group B it was relatively stable (9.9% vs. 7.3%, P=0.52). Conclusions: Artificial ring annuloplasty is associated with significantly less tricuspid regurgitation than simple suture annuloplasty.

Effect and mechanism of methanolic extract of Eupatorium to model rats with chronic muscle injury / 中成药

AIM To investigate the effect and mechanism of methanolic extract of Eupatorium (MEOE) to model rats with chronic soft tissue injury.METHODS The model rats were established by mechanical injury and a subsequent two-week normal feeding for respective administration of high,medium and small dosage of MEOE once a day successively for 14 days.An array of indices,the level of superoxide dismutase (SOD),malondialdehyde (MDA),prostaglandin E2 (PGE2),nitric oxide (NO),interleukin-6 (IL-6) and histamine,the expression of tumor necrosis factor-alpha (TNF-α),nitric oxide (NO) and Collagen-Ⅰ/Ⅲ,and the activity of vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF) were measured to analyze the effect of MEOE to model rats with chronic muscle injury.RESULTS MEOE resulted in apparent reduction of contents of MDA,PGE2 and NO,and the levels of TNF-α and IL-6 in muscular tissue (P ＜ 0.05),significantly increased of the SOD in muscular tissue (P ＜ 0.01),a remarkably inhibited expression of the tissue Collagen-Ⅰ/Ⅲ protein (P ＜ 0.01),and significantly improved activity of tissue VEGF and bFGF (P ＜ 0.01).CONCLUSION The certain therapeutic effects of MEOE to rats with chronic muscle injury may correlate with its influence to the levels of inflammatory factors inhibition,the oxidative stress relief,the overexpression of collagen-Ⅰ/Ⅲ inhibition,the VEGF and bFGF activity improvement,and the time spare from the repairing.