Application of trauma-focused cognitive behavioral therapy among children and adolescents with childhood household dysfunction / 中南大学学报(医学版)

Childhood household dysfunction(CHD)is a common adverse childhood experience,which brings the heavy physical and mental afflictions to children and adolescents.Trauma-focused cognitive behavioral therapy(TF-CBT)is an evidence-based psychotherapy that helps children and adolescents who have experienced childhood trauma with traumatic memories.It aims to enhance the coping abilities of CHD children and adolescents,thereby improving the negative effects caused by trauma and effectively reducing psychological burden.TF-CBT can effectively improve post-traumatic stress disorder,emotional and behavioral problems,and family function in children and adolescents with CHD.It is recommended to conduct high-quality original research in the future,develop targeted TF-CBT intervention plans based on potential predictive factors,adopt a combination of online and offline methods,and construct TF-CBT interventions suitable for the Chinese CHD population to meet the mental health service needs of CHD children and adolescents.

Comparison of the application methods and effects of skin flaps in the repair of defects in different parts of the nose according to the concept of aesthetic nosesubunits / 中华耳鼻咽喉头颈外科杂志

Objective: To analyze the difference of application methods and effects of local flap in small and medium-sized defects of different aesthetic subunits of nose, in order to provide reference for clinical work. Methods: A retrospective analysis was made on 59 patients with external nasal masses and scars who underwent surgical treatment in the Department of Aesthetic Plastic Surgery of the Affiliated Hospital of Qingdao University from July 1, 2021 to January 30, 2022, including 27 females and 32 males, aged 15 to 69 years. Using Likert scale, the repair methods and effects of local flap for nasal soft tissue defects were evaluated and summarized from three aspects of texture, flatness and scar concealment. GraphPad Prism 5.0 software was used for data statistics and analysis. Results: The use of skin flaps to repair small and medium-sized areas of the nose could achieve satisfactory results. For patients with different subunits, in terms of skin flatness and scar concealment degree in the operation area, patients' satisfaction with the dorsal and lateral nasal areas was higher than that of the alar and tip areas, respectively (F=6.40, P=0.001; F=10.57, P<0.001). For patients with different skin flap repair methods, the satisfaction of patients with Z-plasty and Dufourmentel skin flap was higher than that of other skin flap repair methods (F=4.38, P=0.002), and the satisfaction of patients with Dufourmentel skin flap was the highest in the degree of scar concealment (F=2.57, P=0.038). Conclusions: In the small and medium-sized defects of the nose, the use of multiple local flaps can achieve good cosmetic effects and functional recovery. The operator should select the appropriate flap repair method according to the characteristics of different aesthetic subunits of the nose.

Efficacy and Safety of Decitabine Combined with Modified EIAG Regimen in the Treatment of Patients with Relapsed/Refractory Acute Myeloid Leukemia and High-risk Myelodysplastic Syndrome / 中国实验血液学杂志

OBJECTIVE@#To investigate the efficacy, prognosis and safety of decitabine combined with modified EIAG regimen in the treatment of patients with relapsed/refractory acute myeloid leukemia (AML) and high-risk myelodysplastic syndrome (MDS).@*METHODS@#The clinical data of 44 patients with relapsed/refractory AML and high-risk MDS admitted to our hospital from January 2017 to December 2020 were analyzed retrospectively. The patients were equally divided into D-EIAG group (decitabine combined with EIAG regimen) and D-CAG group (decitabine combined with CAG regimen) according to clinical treatment regimen. The complete response (CR), CR with incomplete hematologic recover (CRi), morphologic leukemia-free state (MLFS), partial response (PR), overall response rate (ORR), modified composite complete response (mCRc), overall survival (OS) time, 1-year OS rate, myelosuppression and adverse reactions between the two groups were compared.@*RESULTS@#In D-EIAG group, 16 patients (72.7%) achieved mCRc (CR+CRi+MLFS), 3 patients (13.6%) achieved PR, and ORR (mCRc+PR) was 86.4%. In D-CAG group, 9 patients (40.9%) achieved mCRc, 6 patients (27.3%) achieved PR, and ORR was 68.2%. Difference was observed in mCRc rate between the two groups (P=0.035), but not in ORR (P>0.05). The median OS time of D-EIAG group and D-CAG group was 20 (2-38) months and 16 (3-32) months, and 1-year OS rate was 72.7% and 59.1%, respectively. There was no significant difference in 1-year OS rate between the two groups (P>0.05). After induction chemotherapy, the median time for absolute neutrophil count recovery to 0.5×109/L in D-EIAG group and D-CAG group was 14 (10-27) d and 12 (10-26) d, for platelet count recovery to 20×109/L was 15 (11-28) d and 14 (11-24)d, the median red blood cell suspension transfusion volume was 8 (6-12) U and 6 (6-12) U, and the median apheresis platelet transfusion volume was 4 (2-8) U and 3 (2-6) U, respectively. There were no statistically significant differences in comparison of the above indicators between the two groups (P>0.05). The hematological adverse reactions of patients were mainly myelosuppression. Grade III-IV hematological adverse events occurred in both groups (100%), with no increase in the incidence of non-hematological toxicities such as gastrointestinal reactions or liver function damage.@*CONCLUSION@#Decitabine combined with EIAG regimen in the treatment of relapsed/refractory AML and high-risk MDS can improve remission rate, provide an opportunity for subsequent therapies, and have no increase in adverse reactions compared with D-CAG regimen.

Carbon Chain Length Determines Inhibitory Potency of Perfluoroalkyl Sulfonic Acids on Human Placental 3β-Hydroxysteroid Dehydrogenase 1: Screening, Structure-Activity Relationship, and In Silico Analysis / 生物医学与环境科学（英文）

OBJECTIVE@#This study aimed to compare 9 perfluoroalkyl sulfonic acids (PFSA) with carbon chain lengths (C4-C12) to inhibit human placental 3β-hydroxysteroid dehydrogenase 1 (3β-HSD1), aromatase, and rat 3β-HSD4 activities.@*METHODS@#Human and rat placental 3β-HSDs activities were determined by converting pregnenolone to progesterone and progesterone secretion in JEG-3 cells was determined using HPLC/MS-MS, and human aromatase activity was determined by radioimmunoassay.@*RESULTS@#PFSA inhibited human 3β-HSD1 structure-dependently in the order: perfluorooctanesulfonic acid (PFOS, half-maximum inhibitory concentration, IC 50: 9.03 ± 4.83 μmol/L) > perfluorodecanesulfonic acid (PFDS, 42.52 ± 8.99 μmol/L) > perfluoroheptanesulfonic acid (PFHpS, 112.6 ± 29.39 μmol/L) > perfluorobutanesulfonic acid (PFBS) = perfluoropentanesulfonic acid (PFPS) = perfluorohexanesulfonic acid (PFHxS) = perfluorododecanesulfonic acid (PFDoS) (ineffective at 100 μmol/L). 6:2FTS (1H, 1H, 2H, 2H-perfluorooctanesulfonic acid) and 8:2FTS (1H, 1H, 2H, 2H-perfluorodecanesulfonic acid) did not inhibit human 3β-HSD1. PFOS and PFHpS are mixed inhibitors, whereas PFDS is a competitive inhibitor. Moreover, 1-10 μmol/L PFOS and PFDS significantly reduced progesterone biosynthesis in JEG-3 cells. Docking analysis revealed that PFSA binds to the steroid-binding site of human 3β-HSD1 in a carbon chain length-dependent manner. All 100 μmol/L PFSA solutions did not affect rat 3β-HSD4 and human placental aromatase activity.@*CONCLUSION@#Carbon chain length determines inhibitory potency of PFSA on human placental 3β-HSD1 in a V-shaped transition at PFOS (C8), with inhibitory potency of PFOS > PFDS > PFHpS > PFBS = PFPS = PFHxS = PFDoS = 6:2FTS = 8:2FTS.

Mechanism study of rhubarb-peach kernel regulation of feces metabolic profile in mice with adenomyosis / 药学学报

This paper aims to investigate the regulatory mechanism of blood-activating and stasis-dissipating drugs on fecal metabolic characteristics of rhubarb-peach kernel in mice with adenomyosis (AM) using fecal metabolome method. Adenomyosis was modeled by pituitary transplantation, and after the end of modeling administration, fecal samples were collected from mice. Non-targeted metabolomics studies were performed using liquid chromatography-mass spectrometry (LC-MS) to compare the metabolic characteristics of the feces of mice in each group and to find intestinal differential metabolites and potential differential metabolic pathways. The results showed that compared with the normal group, 5-hydroxy-L-tryptophan, histidine, L-acetylcarnitine, 16-hydroxy hexadecanoic acid, thromboxane B2, etc. were significantly up-regulated, L-urobilin and prostaglandin D3 were down-regulated in the feces of the model group, and were reversed after treatment with the rhubarb-peach kernel. The results of metabolic pathway enrichment analysis showed that tryptophan metabolism and histidine metabolism were the main intervention pathways of the rhubarb-peach kernel on AM intestinal metabolism. This study found that the underlying mechanism of the rhubarb-peach kernel in the treatment of AM is related to the intervention of intestinal metabolism of tryptophan, histidine, bile acid, choline and arachidonic acid, and the regulation of pro-inflammatory microenvironment and fatty acid metabolic homeostasis. This study has been approved by the Experimental Animal Ethics Committee of China Three Gorges University (No. 20190801).

Efficacy of posterior atlantoaxial joint release in treating craniovertebral junction deformity combined with atlantoaxial instability / 西安交通大学学报(医学版)

【Objective】 To evaluate the curative effect of posterior atlantoaxial joint release and internal fixation in treating unstable craniocervical junction malformation （UCVJM）. 【Methods】 This study retrospectively enrolled 31 patients with UCVJM， who received posterior atlantoaxial joint release and internal fixation between January 2015 and December 2018. The pre- and postoperative changes of the Japanese Orthopaedic Association （JOA） scores， the cervicomedullary angle （CMA）， the atlantodental interval （ADI） and the height above the Chamberlain line of the odontoid （H） were traced to evaluate whether clinical symptoms， compression of spinal cord， horizontal and vertical dislocation of atlantoaxial were improved postoperatively. 【Results】 The average operation duration， bleeding during operation and the average days of hospitalization were （168.38±38.21）min， （147.09±59.84）mL， and （9.54±2.81） days， respectively. None of the patients had vertebral artery or spinal cord injury during operation. JOA score， ADI， H， and CMA were （11.94±1.37） points， （2.72±1.08）mm， （3.03±0.78）mm， and （145.35±8.00）° respectively on the 6th days after operation compared with the preoperative （9.94±1.26） points， （4.96±1.60）mm， （6.89±1.36） mm and （122.16±9.58）°， with statistical differences， which indicated all indexes were improved （all P<0.001）. During 6-25 months’ follow-up， there was no internal fixation looseness or displacement and JOA score was increased to （13.16±1.19） for all the patients in the last follow-up （all P<0.001）. 【Conclusion】 The posterior atlantoaxial joint release combined with internal fixation is safe and effective for patients with UCVJM.

The Pattern of Time to Onset and Resolution of Immune-Related Adverse Events Caused by Immune Checkpoint Inhibitors in Cancer: A Pooled Analysis of 23 Clinical Trials and 8,436 Patients / Journal of the Korean Cancer Association, 대한암학회지

Purpose@#The occurrence pattern of immune-related adverse events (irAEs) induced by immune checkpoint inhibitor (ICI) in cancer treatment remains unclear. @*Materials and Methods@#Phase II-III clinical trials that evaluated ICI-based treatments in cancer and were published between January 2007 and December 2019 were retrieved from public electronic databases. The pooled median time to onset (PMT-O), resolution (PMT-R), and immune-modulation resolution (PMT-IMR) of irAEs were generated using the metamedian package of R software. @*Results@#Twenty-two eligible studies involving 23 clinical trials and 8,436 patients were included. The PMT-O of all-grade irAEs ranged from 2.2 to 14.8 weeks, with the longest in renal events. The PMT-O of grade ≥ 3 irAEs was significantly longer than that of all-grade irAEs induced by programmed cell death protein 1 (PD-1) and its ligand 1 (PD-L1) inhibitors (27.5 weeks vs. 8.4 weeks, p < 0.001) and treatment of nivolumab (NIV) plus ipilimumab (IPI) (7.9 weeks vs. 6.0 weeks, p < 0.001). The PMT-R of all-grade irAEs ranged from 0.1 to 54.3 weeks, with the shortest and longest in hypersensitivity/infusion reaction and endocrine events, respectively. The PMT-IMR of grade ≥ 3 irAEs was significantly shorter than that of all-grade irAEs caused by PD-1/PD-L1 blockade (6.9 weeks vs. 40.6 weeks, p=0.002) and NIV+IPI treatment (3.1 weeks vs. 5.9 weeks, p=0.031). @*Conclusion@#This study revealed the general and specific occurrence pattern of ICI-induced irAEs in pan-cancers, which was deemed to aid the comprehensive understanding, timely detection, and effective management of ICI-induced irAEs.

The Pattern of Time to Onset and Resolution of Immune-Related Adverse Events Caused by Immune Checkpoint Inhibitors in Cancer: A Pooled Analysis of 23 Clinical Trials and 8,436 Patients / Journal of the Korean Cancer Association, 대한암학회지

Purpose@#The occurrence pattern of immune-related adverse events (irAEs) induced by immune checkpoint inhibitor (ICI) in cancer treatment remains unclear. @*Materials and Methods@#Phase II-III clinical trials that evaluated ICI-based treatments in cancer and were published between January 2007 and December 2019 were retrieved from public electronic databases. The pooled median time to onset (PMT-O), resolution (PMT-R), and immune-modulation resolution (PMT-IMR) of irAEs were generated using the metamedian package of R software. @*Results@#Twenty-two eligible studies involving 23 clinical trials and 8,436 patients were included. The PMT-O of all-grade irAEs ranged from 2.2 to 14.8 weeks, with the longest in renal events. The PMT-O of grade ≥ 3 irAEs was significantly longer than that of all-grade irAEs induced by programmed cell death protein 1 (PD-1) and its ligand 1 (PD-L1) inhibitors (27.5 weeks vs. 8.4 weeks, p < 0.001) and treatment of nivolumab (NIV) plus ipilimumab (IPI) (7.9 weeks vs. 6.0 weeks, p < 0.001). The PMT-R of all-grade irAEs ranged from 0.1 to 54.3 weeks, with the shortest and longest in hypersensitivity/infusion reaction and endocrine events, respectively. The PMT-IMR of grade ≥ 3 irAEs was significantly shorter than that of all-grade irAEs caused by PD-1/PD-L1 blockade (6.9 weeks vs. 40.6 weeks, p=0.002) and NIV+IPI treatment (3.1 weeks vs. 5.9 weeks, p=0.031). @*Conclusion@#This study revealed the general and specific occurrence pattern of ICI-induced irAEs in pan-cancers, which was deemed to aid the comprehensive understanding, timely detection, and effective management of ICI-induced irAEs.

Determination of polyaminopropyl biguanide in cosmetics by high performance liquid chromatography / 上海预防医学

Objective:To establish a high performance liquid chromatographic（HPLC） quantitative method for the determination of polyaminopropyl biguanide（PAPB） in cosmetics. Methods:Different forms of cosmetic samples were prepared by ultrasonic extraction and followed by high speed centrifugation of the extraction solution. The supernatant was degreased by hexane， and then was filtered by 0.22 μm millipore filter. The continued filtrate was taken for analysis. An Agilent reversed phase column， Zorbax SB-C18（5 μm，4.6 mm×250 mm）was used with 0.02 mol/L ammonium acetate buffer （pH=4.8） ： methanol （60∶40） as the mobile phase under the condition of isocratic elution. Diode array detection method was used for PAPB determination. Qualitative and quantitative determination of PAPB was conducted in 51 batches of commercially available cosmetics. Results:The relative standard deviations （RSD） were in the range of 1.2 %-4.4 %（n=6）； the recoveries were in the range of 97.5 %-106.5 %.The method showed a good linearity within the concentration range of 5-1 000 μg/mL with correlation coefficient of 0.999 62； The detection limit was 15 mg/kg. In 51 batches of commercially available cosmetics. One batch of makeup remover showed positive resullt， which was consistent with the UV spectrum of the standard. Conclusion:We have established a HPLC method for accurate quantification of PAPB. It can be used for analyzing the cosmetics products.

Characterization, isolation, and culture of spermatogonial stem cells in / 亚洲男科学杂志(英文版)

Spermatogonial stem cells (SSCs) have great applications in both reproductive and regenerative medicine. Primates including monkeys are very similar to humans with regard to physiology and pathology. Nevertheless, little is known about the isolation, the characteristics, and the culture of primate SSCs. This study was designed to identify, isolate, and culture monkey SSCs. Immunocytochemistry was used to identify markers for monkey SSCs. Glial cell line-derived neurotrophic factor family receptor alpha-1 (GFRA1)-enriched spermatogonia were isolated from monkeys, namely Macaca fascicularis (M. fascicularis), by two-step enzymatic digestion and magnetic-activated cell sorting, and they were cultured on precoated plates in the conditioned medium. Reverse transcription-polymerase chain reaction (RT-PCR), immunocytochemistry, and RNA sequencing were used to compare phenotype and transcriptomes in GFRA1-enriched spermatogonia between 0 day and 14 days of culture, and xenotransplantation was performed to evaluate the function of GFRA1-enriched spermatogonia. SSCs shared some phenotypes with rodent and human SSCs. GFRA1-enriched spermatogonia with high purity and viability were isolated from M. fascicularis testes. The freshly isolated cells expressed numerous markers for rodent SSCs, and they were cultured for 14 days. The expression of numerous SSC markers was maintained during the cultivation of GFRA1-enriched spermatogonia. RNA sequencing reflected a 97.3% similarity in global gene profiles between 0 day and 14 days of culture. The xenotransplantation assay indicated that the GFRA1-enriched spermatogonia formed colonies and proliferated in vivo in the recipient c-Kit

Mental health status of adolescents with adverse childhood experience and the influencing factors / 中南大学学报(医学版)

Adverse childhood experience (ACE) is potentially negative experience that occurs between 0 and 18 years old. The ACE adolescents have prominent mental health problems such as emotional regulation disorder, unstable interpersonal relationship, poor coping ability, and cognitive dysfunction. Until now, the factors affecting the mental health of ACE adolescents are not clear, but it is certain that the ecosystem in which ACE adolescents life affects their mental health. Specifically, the parent-child relationship, the school environment, the peer relationship in the micro-system, and the interaction between the parent-child relationship and other interpersonal relationship in the meso-system have been confirmed to be significantly related to the mental health of ACE adolescents. In the appearance system, the neighborhood cohesion, the level of family income, the educational level of parents and the different social and cultural background in the macro-system all have different degrees of impact on the development of ACE adolescents' psychological behaviors. In the diachronic system, the time and frequency of suffering from ACE have different effects on the mental health regarding the ACE adolescents.

The Effect of Novel Phosphodiesterase 4 Inhibitor ZL-n-91 to the Proliferation of Leukemia Cells / 中国实验血液学杂志

OBJECTIVE@#To investigate the inhibitory effects of novel phosphodiesterase 4 inhibitor ZL-n-91 to the proliferation of leukemia cells L1210 and K562.@*METHODS@#CCK-8 method was used to detect the effect of ZL-n-91 to the proliferation of L1210 and K562 cells, and the proliferation rate, IC@*RESULTS@#ZL-n-91 showed a significant inhibitory effect to the proliferation of leukemia cells L1210 and K562 in a dose-dependent manner (P<0.001). After treated by ZL-n-91, the leukemia cells L1210 and K562 in the S-phase in cell cycle decreased significantly compared with those in control group (P<0.01). The apoptosis of leukemia cells L1210 and K562 could be induced by ZL-n-91 (P<0.001), and the expression level of apoptosis related protein BAX significantly increased. In the animal experiment, the result showed that ZL-n-91 could significantly inhibit the growth of subcutaneously transplantation tumor (P<0.05).@*CONCLUSION@#The novel phosphodiesterase 4 inhibitor ZL-n-91 can effectively inhibit the proliferation of leukemia cells L1210 and K562, which has the potential of anti-leukemia drug development.

Effect of a novel phosphodiesterase 4 inhibitor ZL-n-91 on proliferation, cell cycle and apoptosis of human glioma U87 cells / 中国药理学通报

Aim: To investigate the effect of ZL-n-91, a novel phosphodiesterase 4 (PDE4) inhibitor, on proliferation, cell cycle and apoptosis of human glioma U87 cells. Methods In vitro the different concentrations of ZL-n-91 were set up to evaluate the proliferation of U87 cells by CCK-8 assay. The cell apoptosis and cell cycle distribution were examined by flow cytometry. The expression of CDK2, CDK4, cyclin Dl and apoptosis-related protein Bax and Bcl-2 proteins were detected by Western blot. A subcutaneous transplanted tumor model of U87 in nude mice was established for the in vivo experiment using a dosage of 5 mg · kg

Efficacy of modified posterior fossa decompression in the treatment of Chiari type Ⅰ malformation with the neuroendoscope / 西安交通大学学报(医学版)

【Objective】 To investigate the clinical efficacy of modified posterior fossa decompression in treating Chiari type I malformation under the neuroendoscope. 【Methods】 We made a retrospective analysis of the clinical data of 63 patients with Chiari type I malformation treated at the Neurosurgery Department of The First Affiliated Hospital of Xi’an Jiaotong University from January 2015 to December 2019. Of the patients, 28 ones underwent modified posterior fossa decompression assisted with neuroendoscopy (observation group) while 35 received posterior fossa decompression with duraplasty (control group). Tator grading, syringomyelia improvement and complications were compared between the two groups to evaluate the postoperative efficacy. 【Results】 The operations were successful in all the 63 patients and no death or severe neurological dysfunction was observed. The efficacy rate was 78.6% in the observation group and 54.3% in the control group, with significant difference (P0.05). 【Conclusion】 Modified posterior fossa decompression assisted with neuroendoscope is a safe and effective treatment for Chiari type Ⅰ malformation. Intraoperative dural watertight suture and dural-muscle suspension can help reduce the occurrence of subcutaneous effusion.

Nursing care of a patient with multiple renal transplantation with high sensitization and severe obstructive sleep apnea hypopnea syndrome / 中国实用护理杂志

Objective:To summarize the nursing experience of a patient with multiple renal transplants with high sensitization and severe obstructive sleep apnea hypopnea syndrome.Methods:A phased care intervention was implemented through multidisciplinary joint treatment.Results:The transplanted renal function of the patient recovered well, the concentration of immunopreparations was stable, and the patient was cured and discharged after 30 days of hospitalizationConclusion:Preoperative accurate antibody screening and effective desensitization therapy are the prerequisites for successful operation. Postoperative sleep apnea, rejection and observation and nursing of immunosuppressive drugs are implemented. Personalized rehabilitation guidance and psychological care are implemented throughout the whole process. Strengthening missions and attaching importance to continuous care have effectively protected patients' safety.

The evolution of the nasopharyngeal carcinoma staging system over a 10-year period: implications for future revisions / 中华医学杂志(英文版)

BACKGROUND@#The classification criteria and staging groups for nasopharyngeal carcinoma described in the Union for International Cancer Control/American Joint Committee on Cancer (UICC/AJCC) staging system have been revised over time. This study assessed the proportion of patients whose staging and treatment strategy have changed due to revisions of the UICC/AJCC staging system over the past 10 years (ie, from the sixth edition to the eighth edition), to provide information for further refinement.@*METHODS@#We retrospectively reviewed 1901 patients with non-metastatic nasopharyngeal carcinoma treated in our cancer center between November 2009 and June 2012. The Akaike information criterion and Harrell concordance index were applied to evaluate the performance of the staging system.@*RESULTS@#In total, 25 (1.3%) of the 1901 patients who were staged as T2a according to the sixth edition system were downgraded to T1 in the eighth edition; 430 (22.6%) staged as N0 in the sixth edition were upgraded to N1 in the eighth edition; 106 (5.6%) staged as N1/2 in the sixth edition were upgraded to N3 in the eighth edition. In addition, 51 (2.7%) and 25 (1.3%) of the study population were upstaged from stage I to stage II and stage II to stage IVa, respectively; 10 (0.5%) was downgraded from stage II to stage I. The survival curves of adjacent N categories and staging groups defined by eighth classification system were well-separated. However, there was no significant difference in the locoregional failure-free survival (P = 0.730) and disease-free survival (P = 0.690) rates between the T2 and T3 categories in the eighth edition classification system.@*CONCLUSIONS@#Modifications to the tumor-node-metastasis staging system over the past 10 years have resulted in N classification changes in numerous cases. Although the eighth edition tumor-node-metastasis staging system better predicts survival outcomes, the T classification could be simplified in future revisions.

Individualized microsurgical analysis of spinal dumbbell tumors / 西安交通大学学报(医学版)

Objective: To explore the individualized surgical approach and microsurgical treatment of spinal dumbbell tumors. Methods: We made a retrospective analysis of the clinical data of 26 cases of spinal dumbbell tumors resected at the Neurosurgery Department of The First Affiliated Hospital of Xi'an Jiaotong University from January 2015 to December 2018. Individualized surgical approach was selected by the Toyama tumor classification and spinal internal fixation was conducted according to the patients' spinal instability before and during the operation. The sensory and motor scores of the American Spinal Cord Injury Association (ASIA) were compared before and after the surgery in order to evaluate the therapeutic effect. Results: All the 26 cases of spinal dumbbell tumors underwent single stage resection. There were 20 cases of schwannoma, 3 cases of ganglion neuroma, 2 cases of spinal meningioma, and 1 case of neurofibroma. The neurological symptoms of the patients were improved to different extent after the operation, and there was no increase in motor dysfunction. The ASIA sensory score was 219.34±1.62 and the ASIA motor score was 98.61±1.25 at 1 month after the surgery, and both of them were significantly higher than those before surgery (P<0.001). The follow-up period was 6-52 months, with an average of 28 months. No tumor recurrence or spinal deformity was observed. Conclusion: Single stage micro-resection of spinal dumbbell tumors could be achieved by modern microsurgical technology and individualized surgical approach according to tumor characteristics. Based on accurate evaluation of the stability of the spine before and during the operation, reasonable selection of spinal internal fixation are crucial for preventing postoperative spinal deformity and improve patients' quality of postoperative life.

Analysis of risk factors for death in patients with corona virus disease 2019 / 中华传染病杂志

Objective:To investigate the risk factors for death in patients with corona virus disease 2019 (COVID-19).Methods:The clinical data of 141 cases of patients diagnosed with COVID-19 at Renmin Hospital of Wuhan University from February 1 to February 26, 2020 were included in this retrospective analysis. The gender, age, time of hospitalization after the onset, clinical manifestations, underlying diseases, laboratory examination indicators (inculding white blood cell counts, neutrophil counts, lymphocyte counts, lymphocyte subsets, immunoglobulin, complement 3, complement 4, D-dimer, fibrinogen), and short term prognosis were compared between the death group and the survival group. Logistic regression was used to analyze the factors influencing the death of COVID-19 patients. The t test, Mann Whitney U test or chi-square test were used for comparison between groups. Results:Of the 141 COVID-19 patients, 52 died and 89 survived. The age, hypertension, chronic respiratory diseases, cardiovascular and cerebrovascular diseases, fever and wheeze of patients in the death group were all higher than those in the survival group, which were (70.7±13.3) years old vs (50.4±15.3) years old, 51.9%(27/52) vs 14.6%(13/89), 15.4%(8/52) vs 4.5%(4/89), 30.8%(16/52) vs 7.9%(7/89), 80.8%(42/52) vs 61.8%(55/89) and 50.0%(26/52) vs 25.8%(23/89), respectively. The differences were all statistically significant ( t=7.972, χ2=22.104, 3.615, 12.392, 5.503 and 8.447, respectively, all P<0.05). The white blood cell count, neutrophil count, CD4 + /CD8 + T lymphocyte, immunoglobulin E, D-dimer, fibrinogen, CD19 + T lymphocyte proportion and CD19 + T lymphocyte count of patients in the death group were all higher than those in the survival group, which were 8.20(5.26, 13.01)×10 9/L vs 5.29(3.96, 7.04)×10 9/L, 7.40(4.54, 11.46)×10 9/L vs 3.16(2.20, 5.01)×10 9/L, 2.32(1.77, 3.11) vs 1.63(1.25, 2.08), 125.0(42.6, 275.0) IU/mL vs 66.8(38.3, 143.0) IU/mL, 7.27(2.11, 16.21) mg/L vs 0.95(0.38, 2.54) mg/L, 4.37(2.72, 6.78) g/L vs 4.10(2.78, 4.97) g/L, (23.19±13.43)% vs (15.38±6.38)%, and (181.5±115.4)/μL vs (98.89±77.64)/μL, respectively. The differences were all statistically significant ( Z=3.944, 4.210, 2.834, 1.190, 5.497, 1.180, t=3.987, 3.411, respectively, all P<0.05). The lymphocyte count, CD3 + T lymphocyte proportion, CD3 + T lymphocyte count, CD8 + T lymphocyte proportion, CD8 + T lymphocyte count, CD16 + CD56 + T lymphocyte count and CD4 + T lymphocyte count were all lower than those in survival group, which were 0.47(0.37, 0.96)×10 9/L vs 1.33(0.90, 1.55)×10 9/L, 48.72%(42.31%, 76.92%) vs 69.91%(65.05%, 75.36%), 223.0(100.0, 403.0)/μL vs 761.0(499.0, 1 092.0)/μL, 13.82%(10.32%, 19.82%) vs 24.90%(20.87%, 29.57%), 55.5(30.5, 106.0)/μL vs 318.0(162.5, 443.5)/μL, 63.0(29.0, 99.5)/μL vs 140.0(69.5, 195.5)/μL and (209.74±140.13)/μL vs (487.61±232.02)/μL, respectively. The differences were all statistically significant ( Z=6.937, 3.944, 5.883, 3.924, 5.703, 3.517 and t=7.558, respectively, all P<0.01). Age, history of hypertension, white blood cell count, D-dimer, and fibrinogen were the risk factors for death of COVID-19 (odds ratio ( OR)=1.170, 10.405, 3.055, 1.128 and 1.343, respectively, all P<0.05). Conclusion:Age, underlying hypertension, white blood cell count, D-dimer and fibrinogen are independent prognostic factors for COVID-19.

Effects of Hypoxia on the Growth and Development of the Fetal Ovine Hepatocytes in Primary Culture / 生物医学与环境科学（英文）

OBJECTIVE@#To investigate the development and characterizations of the hepatocytes isolated from fetal ovine and to determine the effect of hypoxia on their growth and metabolism.@*METHODS@#Fresh hepatocytes were isolated from the liver of fetal ovine at late gestation, cultured in specific media, and exposed to normoxia (21% O2) or hypoxia (2% O2). The cellular characteristics and population purity were identified by immunocytochemistry and flow cytometry (FCM). The effects of hypoxia on cell cycle and apoptosis of the hepatocytes were evaluated by FCM, whereas the cellular ultrastructure changes were examined with a transmission electron microscope.@*RESULTS@#The cell purity of hepatocytes was over 95%. Under hypoxia exposure, the hepatocytes showed a gradual increase in proportion at the S phase and in proliferative index, followed with a compatible increase in apoptosis and progressively decreased cell viability. Additionally, the organelles of the hepatocytes demonstrated dramatic changes, including swelling of mitochondria, disorder in cristae arrangement, expansion of endoplasmic reticulum, and a large number of circular lipid droplets emerging in the cytoplasm.@*CONCLUSION@#Fetal ovine hepatocytes could be primarily cultured in a short-term culture system with a high purity of over 95% and with their preserved original characteristics. Hypoxia could induce changes in ultrastructural and inhibit the proliferation of cultured fetal ovine hepatocytes through apoptotic mechanisms.

The clinical and MR features of intracranial nonspecific inflammatory granuloma / 实用放射学杂志

Objective To analyze the clinical and MR features of intracranial nonspecific inflammatory granuloma and improve the accuracy of preoperative diagnosis.Methods The clinical and MR features of 9 intracranial nonspecific inflammatory granuloma cases proved by histopathology were analyzed retrospectively.Results Nine lesions were all located in the supratentorial cerebral hemisphere with large lesion range and obvious peripheral edema.On enhancement MR imaging,the lesions were obviously and irregularly enhanced.There were simple patchy enhancement in 3 cases,patchy enhancement with multiple micronodular enhancement in 4 cases,and multiple micronodular enhancement in 2 cases.None enhancement areas were noticed in all enhancement lesions.There were superficial meningeal enhancements in 4 cases.On MR plain scanning,the MR enhancement area of lesions showed similar signal to the grey matter on T1 WI and low signal similarly to the white matter on T2 WI.On MRS scan,the significant high signal of Cho was detected in 2 cases and their Cho/Cr ratio was over 4.The Cho/Cr ratio was lower than 1.3 in 5 cases.Conclusion There are some specific MR enhancement features in the intracranial nonspecific inflammatory granuloma including multiple small nodules or patchy enhancement,in which there were no enhancement areas,and some cases have meningeal enhancement.