Multicenter Prospective Study of Different Induction Regimens of Azacytidine in Treatment of Elderly Patients with Acute Myeloid Leukemia / 中国实验血液学杂志

OBJECTIVE@#To observe the efficacy and safety of different induction regimens of same total dosage of azacitidine (Aza), including standard dose (standard dose group) and low-dose long-term (adjusted dose group), in the treatment of elderly acute myeloid leukemia (AML).@*METHODS@#A total of 103 elderly patients with AML (non-acute promyelocytic leukemia) from January 2020 to June 2021 were enrolled. Aza was administered at the standard dose of 75 mg/(m2·d) for 7 days in the standard dose group (50 cases), while at 100 mg/d for 7-12 days in the adjusted dose group (53 cases). The administration days in adjusted dose group was calculated based on the total standard dose of the patient's single course of treatment. The efficacy and safety between standard dose group and adjusted dose group were compared. Subgroup analysis were performed in the two groups for Aza alone, Aza combined with BCL-2 inhibitor, and Aza combined with low-dose chemotherapy for efficacy and safety.@*RESULTS@#There were no significant differences in overall response rate (ORR), incidence of adverse reaction, and 1-year overall survival (OS) rate between standard dose group and adjusted dose group (P >0.05). The ORR of combination was higher than that of Aza alone (P < 0.05), while there was no significant difference in ORR between Aza combined with BCL-2 inhibitor and Aza combined with low-dose chemotherapy (P >0.05). The combination of BCL-2 inhibitor did not increase the incidence of adverse reactions compared wtih Aza alone. There was a higher risk of myelosuppression and pulmonary infection with a combination of low-dose chemotherapy than with a combination of BCL-2 inhibitor and Aza alone (P <0.05). No significant difference was observed in 1-year OS between Aza alone, Aza combined with BCL-2 inhibitor, and Aza combined with low-dose chemotherapy (P >0.05).@*CONCLUSIONS@#Both two induction regimens can be used in elderly AML patients who cannot tolerate intensive chemotherapy with similar overall effectiveness and safety. Aza combined with low-dose chemotherapy may result in increased ORR and an increased incidence of serious adverse reactions, and may not result in longer survival compared with Aza alone. Aza combined with BCL-2 inhibitor not only has similar effect in complete remission, objective response rate, and OS compared with Aza combined with low-dose chemotherapy, but also has higher safety.

Research advances in relationship between mitochondrial dynamics and cellular energy metabolism and exercise intervention / 生理学报

Mitochondrial dynamics, involving mitochondrial fusion, fission and autophagy, plays an important role in maintaining cellular physiological function and homeostasis. Mitochondria are the "energy plant" of human body, so the changes of mitochondrial fusion, division and autophagy are important for cell respiration and energy production. On the other hand, energy metabolism influences mitochondrial dynamics in turn. This paper reviewed the recent advances in studies on the relationship between energy metabolism and the proteins regulating mitochondrial fusion, fission and autophagy. The association of mitochondrial dynamics with electron chain complex expression, oxidative phosphorylation and ATP synthesis upon exercise intervention will provide theoretical references for the further studies in sports training and disease intervention.

Treatment of 12 patients with diabetic foot ulcers by VSD combined with anterior lateral perforator flap / 中国骨伤

OBJECTIVE@#To explore the clinical efficacy of VSD vacuum suction combined with anterolateral thigh perforator flap in repairing diabetic foot ulcer.@*METHODS@#From June 2015 to December 2017, 12 patients with diabetic foot, including 8 males and 4 females, with an average age of 57.4 years old (ranged 49 to 71 years old) and ulcer formation time (1 month to 2 years) were analyzed retrospectively. The wound area of ulcer ranged from 3 cm×5 cm to 7cm×10 cm. All the patients were treated with debridement and VSD negative pressure aspiration, washing with Chinese medicine lotion and flap repair. The survival, appearance and sensory recovery of the flap were observed.@*RESULTS@#All 12 flaps survived after operation, and the wounds were successfully repaired. The donor site healed well. During the follow-up of 6 to 18 months, the flaps of 12 patients survived well and their appearance was satisfactory, sensory partial recovery.@*CONCLUSIONS@#The clinical effect of VSD negative pressure drainage combined with anterolateral femoral perforator flap after debridement of diabetic foot ulcer is satisfactory and worth popularizing.

Clinical application of three-dimensional printing implant template in the restoration of free-end missing teeth / 中国组织工程研究

BACKGROUND:Three-dimensional (3D) printing technology is currently one of the most advanced industrial manufacturing technologies. The surgical template prepared based on the 3D printing technology is mainly made of resin, and a great improvement in its accuracy is required. However, the clinical application of the surgical template made of metal is rarely reported. OBJECTIVE:To evaluate the clinical value of 3D-printing implant template in the restoration of free-end missing teeth.METHODS:A prospective study was conducted in 64 enrolled patients with free end-tooth defects. All the patients were randomly assigned to receive traditional implant template (control group,n=32) or 3D-printing implant template (study group,n=32), and 3-6 months later, the patients were subjected to crown restoration. At 6 months after crown restoration, cone beam computed tomography was performed to compare the deviation of the implant tip and neck (including vertical, buccolingual, mesial-distal). Success rate and chewing rate were compared between the two groups at 6 months after crown restoration; patient satisfaction assessment was done and compared between the two groups at 1 year after crown restoration. RESULTS AND CONCLUSION:There were no significant differences between the two groups in the success rate and chewing rate (98.7％ vs. 95.6％; 97.4％ vs. 97.1％,P>0.05). The vertical, buccolingual, mesial-distal deviations of the implant tip were significantly lower in the study group than the control group (P<0.05), while there was no difference in the vertical and buccolingual deviations of the implant neck between the two groups (P>0.05), and the mesial-distal deviation of the implant neck was significantly lower in the study group than the control group (P<0.05). In addition, there was no difference in the patient satisfaction between the study and control groups (94％vs. 91％, P>0.05). To conclude, the 3D printing implant template can effectively reduce implant excursion based on the assurance of therapeutic efficacy and patient satisfaction, which is of great significance in the restoration of free-end tooth loss.

Effects of different intensity exercise training on apoptosis-related microRNAs and the targeted proteins in cardiomyocytes / 中国应用生理学杂志

OBJECTIVE@#To detect the levels of miR-1, miR-21 and their targeted proteins in hearts of mice after different exercise training, and discuss potential molecular mechanism.@*METHODS@#Male C57BL/6 mice were randomly divided to 3 groups:sedentary (SE), exercise training 1(ET1) and exercise training 2 (ET2). SE did not do any exercise; ET1 undertook swimming training for 8 weeks, once a day, 5 days/week. Swimming 30 min in the 1 week, and the duration was increased 10 min per week to 90 min and maintained in the 7 and 8 week. ET2 performed the same work as ET1 and switched to twice a day by the end of the 5th week. TUNEL assay was applied to test myocardial apoptosis. Western blot and RT-PCR were used to detect proteins and miRs levels respectively.@*RESULTS@#Compared with SE, in ET1, myocardial apoptosis and miR-1 level did not change, but its targeted protein Bcl-2 increased significantly(<0.01). miR-21 and its targeted protein PDCD4 did not change significantly. In ET2, myocardial apoptosis and miR-1 level were decreased significantly(<0.05). Bcl-2 was increased significantly(<0.01). miR-21 also increased significantly (<0.05), but PDCD4 did not decrease significantly.@*CONCLUSIONS@#Exercise training in ET2 other than ET1 could down-regulate myocardial apoptosis. Alterations of miR-1 and Bcl-2 may be responsible for this cardioprotection. PDCD4 is not sensitive to exercise training, it is likely that miR-21 and other targeted proteins participate in exercise-regulative apoptosis.

Effects of Celastrol on Accelerated Healing of Skin Wounds of Diabetic Ulceration in Rats and Mechanism Revealed by Nuclear Magnetic Resonance-based Metabonomics / 分析化学

The experimental SD rats were randomly divided into normal control group (Con group),diabetic ulcer model group (DM group) and Celastrol group (Cel group).Except the control group,diabetic ulceration rat models were established by intraperitoneal injection of streptozotocin along with skin scald.And then,each group was treated by spraying the saline solution on the affected skin with (Cel group) or without (Con group and DM group) Cel (q.d.×14 d).Nuclear magnetic resonance (NMR)-based metabonomic analysis was applied to detect metabolic characteristics,accompanied by healing rate calculation and HE and Masson staining to study therapeutic effect of celastrol on accelerated healing of skin wounds of diabetic ulceration rats,which could be used to elucidate therapeutic effects of celastrol on the rat diabetic ulceration and its mechanism.The results showed that celastrol could induce epithelial regeneration of the rat ulcer wound,regulate the infiltration of inflammatory cells and the distribution of collagen fibers,and promote the healing of the ulcer wound.About 20 endogenous potential differential metabolites were screened and identified by partial least square analysis.Metabolic pathway analysis was carried out to show that celastrol can significantly recovery the level of the tricarboxylic acid cycle,promote its energy supply,accelerate the protein synthesis,improve mitochondrial dysfunction and oxidative stress,and accelerate the self-repair ability of skin tissue.Celastrol can promote the healing of ulcers skins of the diabetic rats,which contribute to experimental basis of the drugs for the treatment of diabetic ulcers.

Effects of exercise training on myocardial mitochondrial miR-499-CaN-Drp-1 apoptotic pathway in mice / 中国应用生理学杂志

<p><b>OBJECTIVE</b>To detect the levels of miR-499 and relative proteins in hearts of mice after exercise training, and investigate the mechanism of exercise-regulative apoptosis.</p><p><b>METHODS</b>Male C57BL/6 mice were randomly divided into 3 groups( n = 14): sedentary (SE), exercise training 1 (ET1) and exercise training 2 (ET2) group. SE did not do any exercise. ET1 performed swimming training for 8 weeks. ET2 performed the same work as ET1 until the 5th week. Then, mice trained twice a day until the end of training. TUNEL assay was applied to test myocardial apoptosis, RT-PCR and Western blot were used to detect miR-499 and proteins levels respectively.</p><p><b>RESULTS</b>Compared with SE, stress in ET1 failed to affect apoptotic index (AI) and miR-499-CaN-Drp-1 pathway (P > 0.05). In contrast, exercise load in ET2 increased miR-499 level, decreased Drp-1 level and AI with statistical significance respectively (P < 0.05), but neither CaN expression nor CaN activity was changed significantly (P > 0.05).</p><p><b>CONCLUSION</b>Swimming training can inhibit myocardial apoptosis, and the decrease in Drp-l may be responsible for the reduced myocardial apoptosis. CaN, the upstream protein, does not participate in exercise-regulative apoptosis.</p>

Effects of aerobic exercise training on antihypertension and expressions of VEGF, eNOS of skeletal muscle in spontaneous hypertensive rats / 中国应用生理学杂志

<p><b>OBJECTIVE</b>To investigate effects of exercise training on vascular regulators and discuss its antihypertensive mechanism.</p><p><b>METHODS</b>Rats were divided into three groups (n = 7): spontaneous hypertensive rats control group (SHR-C), training group (SHR-T) and normotensive wistar-kyoto control group (WKY-C). Aerobic exercise consisted of 10 weeks of swimming training for 5 days/week. Exercise duration was 40 min in the first week, then 50 min in the second week, from the third week to the end of training, duration was maintained at 60 min. After training, vascular endothelial growth factor (VEGF) and other biomarkers in soleus were measured by RT-PCR and immunoblotting.</p><p><b>RESULTS</b>VEGF and endothelial NO synthase (eNOS) in SHR-C were lower than that in WKY-C (P < 0.05). Blood pressure in SHR-C and SHR-T were higher than that in WKY-C before training; After training, compared with SHR-C, VEGFR2, eNOS, VEGF and VEGF mRNA increased significantly in SHR-T paralleled with marked decreases in blood pressure and heart rate respectively (P < 0.05, P < 0.01).</p><p><b>CONCLUSION</b>Aerobic exercise training lowered the blood pressure in spontaneous hypertensive rats, and promoted VEGF mRNA level and expressions of VEGF, VEGFR2 and eNOS. The up-regulations of these vascular regulators could benefit angiogenesis and contribute to the antihypertensive effects.</p>

Effects of danshen injection on the proliferation of rheumatoid arthritis fibroblast-like synoviocytes cultured with human serum / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To investigate the effects of Danshen Injection (DSI) on the proliferation of rheumatoid arthritis fibroblast-like synoviocytes (RA FLSs) cultured in RA patients' serum.</p><p><b>METHODS</b>The RA FLSs harvested from RA patients' synovial fluid were primarily cultured by routines. The cells were cultured with 10% inactivated human serum (the healthy human serum and the RA patients' serum) for 24 h. Then DSI at the final concentration of 0. 4 mg/mL was added in the cells for further 24 h culture. By taking 10% fetal calf serum as the control, the morphological changes were observed under optical microscope. The proliferation was analyzed by MTT. The apoptosis was detected by flow cytometry. The total RNA was extracted and reverse transcription was performed. The Bax mRNA expression was detected by fluorescent quantitative PCR.</p><p><b>RESULTS</b>(1) After human serum was added in the healthy human serum and RA patients' serum, cells could grow adhering to the wall. Compared with the fetal calf serum group (FCS), the cell density was higher in the healthy human serum group than in the fetal calf serum group, with no obvious morphological changes. (2) MTT results showed that, compared with the fetal calf serum group, the absorbance value (OD) obviously increased in the healthy human serum group and the RA patients' serum group, showing statistical difference (P <0.01). After adding DSI at the final concentration of 0.4 mg/mL, cells from different serums were inhibited to various degrees (with OD significantly decreased, P <0.05). The OD value significantly increased more in the healthy human serum group and the RA patients' serum group than in the fetal calf serum group, showing statistical difference (P <0.01). There was statistical difference between the healthy human serum group and the RA patients' serum group (P <0.01). (3) The apoptosis rate in the RA patients' serum group obviously decreased with statistical difference, when compared with the Salvia miltiorrhiza free fetal calf serum group (P >0. 01). The apoptosis rate in the fetal calf serum group and the RA patients' serum group significantly increased after adding 0.4 mg/mL Salvia miltiorrhiza, showing statistical difference when compared with the Salvia miltiorrhiza free fetal calf serum group and the Salvia miltiorrhiza free RA patients' serum group (P <0.05). The FLSs were effected by 0.4 mg/mL Salvia miltiorrhiza, the apoptosis rate significantly decreased in the healthy human serum group and the RA patients' serum group, showing statistical difference when compared with the fetal calf serum group (P <0. 05, P <0.01). (4) The expression of Bax gene significantly increased in the RA patients' serum group and the fetal calf serum group after action of 0.4 mg/mL Salvia miltiorrhiza, showing statistical difference (P <0. 01). When 0.4 mg/mL Salvia miltiorrhiza was added, the expression of Bax mRNA obviously increased in the healthy human serum group and the RA patients' serum group, showing statistical difference when compared with the fetal calf serum group (P <0.01).</p><p><b>CONCLUSIONS</b>(1) Although healthy human serum can be favorable to the growth of RA FLSs, the fetal calf serum could reflect the actual results better in the cyto biological research on specific diseases (if there is no serum from patients with corresponding disease). (2) DSI could inhibit the proliferation of RA FLSs through promoting their apoptosis.</p>

Establishment of model of traditional Chinese medicine injections post-marketing safety monitoring / 中国中药杂志

<p><b>OBJECTIVE</b>To establish a nurse based post-marketing safety surveillance model for traditional Chinese medicine injections (TCMIs).</p><p><b>METHOD</b>A TCMIs safety monitoring team and a research hospital team engaged in the research, monitoring processes, and quality control processes were established, in order to achieve comprehensive, timely, accurate and real-time access to research data, to eliminate errors in data collection.</p><p><b>RESULT</b>A triage system involving a study nurse, as the first point of contact, clinicians and clinical pharmacists was set up in a TCM hospital. Following the specified workflow involving labeling of TCM injections and using improved monitoring forms it was found that there were no missing reports at the ratio of error was zero.</p><p><b>CONCLUSION</b>A research nurse as the first and main point of contact in post-marketing safety monitoring of TCM as part of a triage model, ensures that research data collected has the characteristics of authenticity, accuracy, timeliness, integrity, and eliminate errors during the process of data collection. Hospital based monitoring is a robust and operable process.</p>

Expansion of China's free antiretroviral treatment program / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>In 2003, China's National Free Antiretroviral Treatment Program (NFATP) was initiated as a pilot, which covered only 100 HIV/AIDS patients. By 2011, the pilot had evolved into a nationwide program and had provided free treatment for over 150 000 patients. The objective of this study was to report and evaluate the progress of China's free antiretroviral treatment program.</p><p><b>METHODS</b>The NFATP Database was systematically reviewed and a total of 150 692 HIV/AIDS patients were included in this study. Program progress indicators including the number of treated HIV/AIDS patients, follow-up visit rate, CD4 test rate, and viral load test rate were summarized and examined over a calendar year to evaluate the progress of NFATP quantitatively and qualitatively.</p><p><b>RESULTS</b>By the end of 2011, a total of 150 692 HIV/AIDS patients had been treated through the NFATP and 122 613 of them were still on treatment. Of all patients, about 72% were enrolled during the past four years. The dominant transmission route was blood related in the early phase of the NFATP, but gradually changed to sexual contact. Besides quantitative improvements, progress indicators also demonstrated significant qualitative improvements that the program had made during the past 9 years.</p><p><b>CONCLUSIONS</b>Great achievement has been made by China's NFATP. China's experience indicates the importance of a comprehensive response to the success of its treatment program. However, to ensure the quality and sustainability of treatment in the long term, more attention and resources should be paid towards program management.</p>

Serum sCD44v6 and sE-cadherin levels in patients with esophageal squamous cell carcinoma / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To investigate the serum levels of sCD44v6 and sE-cadherin (sE-cad) in patients with esophageal squamous cell carcinoma.</p><p><b>METHODS</b>The serum samples were collected from 65 cases of esophageal squamous cell carcinoma, 32 cases of erosive esophagitis and 35 healthy subjects. Serum sCD44v6 and sE-cad levels were measured by enzyme linked immunosorbent assay (ELISA).</p><p><b>RESULTS</b>The mean levels of serum sCD44v6 and sE-cad in esophageal squamous cell carcinoma patients were significantly higher than those of erosive esophagitis patients and normal controls (both P<0.05). There was no significant difference in serum sCD44v6 and sE-cad levels between erosive esophagitis patients normal controls (P=0.566 and P=0.708, respectively). Serum sCD44v6 and sE-cad levels of esophageal cancer patients were not correlated with their clinicopathological features. Serum sCD44v6 level is not correlated with sE-cad level in squamous cell carcinoma patients(P=0.651).</p><p><b>CONCLUSION</b>Serum sCD44v6 and sE-cad might be a potential marker for screening of esophageal squamous cell carcinoma.</p>

Effects of HiLo for two weeks on erythrocyte immune adhesion and leukocyte count of swimmers / 中国应用生理学杂志

<p><b>OBJECTIVE</b>To investigate the effects of living high-training low (HiLo) on innate immunity in blood of elite swimmers.</p><p><b>METHODS</b>Six female swimmers undertook HiLo for two weeks, erythrocyte adhesion function and counts of leukocyte were tested in different time of training period.</p><p><b>RESULTS</b>Red blood cell C3b receptor ring rate (RBC-C3bRR) decreased and red blood cell immune complex matter ring rate (RBC-ICR) increased significantly (P < 0.05), the two markers returned to base line 1 week after training. Counts of leukocyte and granulocyte decreased significantly (P < 0.05), and they recovered 1 week after training; Counts of lymphocyte and monocyte decreased without significance during training and did not recovered after training.</p><p><b>CONCLUSION</b>Immunity of erythrocyte and granulocyte decreased quickly, but lymphocyte and monocyte recovered slowly, swimmers were adaptive to the training.</p>

A retrospective cohort study on reduction of AIDS mortality among patients enrolled in national-free antiretroviral treatment programme in two cities in China / 中华预防医学杂志

<p><b>OBJECTIVE</b>To determine the effect of national free highly active antiretroviral treatment (HAART) on reduction of mortality and relevant risk factors among adult Acquired immunodeficiency syndrome (AIDS) patients.</p><p><b>METHODS</b>A retrospective cohort study was conducted and all AIDS patients diagnosed before Aug. 30th, 2008 in Zhumadian, Henan province, and Fuyang, Anhui province were enrolled in this study, where HAART initiated in early time. The data and information were collected such as AIDS progress, diagnosis, treatment, death and et al.</p><p><b>RESULTS</b>Among 10,394 AIDS patients, the mean age was (41.7 +/- 9.3) year-old, 50.3% (5233/10,394) were male, 85.0% (8808/10,394) were married, 95.1% (9880/10,394) were farmers, and 81.2% (8438/10,394) were former plasma donors (FPDs). The coverage of HAART increased from 5.2% in 2002 to 66.5% in 2008. Conversely, the overall mortality declined from 35.4/100 person-years in 2002 to 5.9/100 person-years in 2008. In a multivariate Cox proportional hazards analysis, the greatest risk factor for mortality was non-HAART, with a hazard ratio (HR) 4.3 (95%CI: 4.0 - 4.7). Among treated patients, compared with higher CD(4)(+) T cell counts (> 200 cells/microl), those initiating therapy with lower CD(4)(+) T cell counts, were at greater risk to death (< 50 cells/microl, HR = 7.9; 50 - 199 cells/microl, HR = 2.8). Number of opportunistic infections (OIs) was risk to mortality (HR = 2.1). In addition, other risk factors included male, age (>or= 50 years old), and other infection way except FPDs (HR were 1.4, 1.6 and 1.8).</p><p><b>CONCLUSION</b>The national free treatment program has significantly reduced the AIDS mortality rate among HIV-infected FPDs through the use of generic antiretroviral drugs in rural clinical settings. The effective reduction of AIDS mortality could be realized through increased coverage of therapy.</p>

Study on the quality of life and influencing factors among people living with AIDS / 中华流行病学杂志

Objective Studing the main influencing risk factors to provide evidence for improving the quality of life among people living with HIV. Methods The quality of life on 758 patients with HIV was evaluated by the Medical Outcomes Study Short-Form Health Survey (SF-36) and some potential risk factors as personal characteristics and disease condition were studied. Means and standard deviations of data were calculated and differences among groups and variances were tested using Student's t test, followed by step-wise multivariate regression. Results The SF-36 two summary scores of 758 patients with HIV appeared to be 45.34±8.77 and 41.92±12.01 respectively. The physical component surmmary scores (PCS) had a gradual decrease with the increase of age. However, mental component summary scores (MCS) had a gradual decrease with the increase of time receiving the treatment. Male patients reported having a better quality of life (QOL) than female, and patients who were infected through injecting drug use and sexual transmission reported to have had better QOL than patients who were infected through paid blood plasma donation. Compare to patients having low CD4+ count, those having higher CD4+ count reported to have better QOL. Conclusion Patients being young, female, infected through paid blood plasma donation, having low CD4+ count, or treated for longer period, would have unsatisfactory QOL.

Tandem application of flow cytometry and polymerase chain reaction for choice targets of minimal residual disease in childhood acute lymphoblastic leukemia / 中国当代儿科杂志

<p><b>OBJECTIVE</b>Minimal residual disease (MRD) is one of the most important prognostic factors in childhood acute lymphoblastic leukemia (ALL). Flow cytometry and PCR are two common techniques for examining MRD in ALL. This study aimed to identify MRD targets by tandem application of both techniques in children with ALL.</p><p><b>METHODS</b>From September 2001 to October 2003, 126 children with newly diagnosed ALL were enrolled on the treatment protocol ALL-XH-99. Tandem application of flow cytometry and PCR was performed to identify MRD targets in these patients.</p><p><b>RESULTS</b>1. Using sets of combined antibodies, immunophenotypic expression of leukemia cells was observed in 95 of 106 B-lineage ALL cases (89.6%). Only one aberrant immunophenotype was observed in 11 cases (11.6%) and most patients with B-lineage ALL (88.4%) expressed at least two suitable targets. 2. Using PCR technique, T-cell receptor (TCR) or immunoglobulin gene rearrangements were identified in 26 of 27 patients (96.3%). Two or more monoclonal/ bi-allelic gene rearrangements were identified in 17 cases (65.4%). The majority (70%) of T-lineage ALL cases contained TCRVgammaI-Jgamma1.3/2.3. Cross-lineage TCR rearrangements were found in 57.1% of cases with B-lineage ALL. 3. Suitable MRD targets of immunophenotypic abnormalities or antigen receptor gene rearrangements were detected in 121 patients (96.0%).</p><p><b>CONCLUSIONS</b>MRD targets were identified using tandem application of flow cytometry and PCR in almost of children with ALL. Cross-lineage TCR rearrangements and bi-allelic gene rearrangements were observed in many patients.</p>

Motorcycle accidents in China / 中华创伤杂志(英文版)

<p><b>OBJECTIVE</b>To analyze the characteristics and causes of motorcycle accidents in China from 2000 to 2005.</p><p><b>METHODS</b>We collected data on possession of motorcycles and automobiles, number of traffic crashes, casualty and economic loss from 2000-2005 Statistic Annual Report of Traffic Management Bureau, Ministry of Public Security of China. The data was processed statistically by SPSS 11.0 software package.</p><p><b>RESULTS</b>During 6 years, the number of motorcycle accidents were up to 122,300 in 2003, which was the highest, and then gradually decreased. However, the casualty had the tendency of consistent increase, for example, the motorcycle accidents resulted in 26,200 deaths and 157,500 injuries in 2005. The mortality per 10, 000 motorcycles and the ratio of deaths to injuries were lower than those of automobiles, but the mortality per 100 motorcycle accidents was significantly higher than that of automobiles (P less than 0.01).</p><p><b>CONCLUSIONS</b>China has attached great importance to the management of traffic safety, which is beneficial to control and reduce traffic accidents in recent years. However, the casualty keeps increasing annually. Therefore, it is urgent to strengthen the management of motorcycles, promote the education of motorcyclists, take effective traffic measures and improve the first-aid system of traffic injuries.</p>

Road crash in China from 2003 to 2005 / 中华创伤杂志(英文版)

<p><b>OBJECTIVE</b>To analyze characteristics and causes of road crash and injuries in China from 2003 to 2005.</p><p><b>METHODS</b>The data of road crash in 2003-2005 were collected to study the characteristics including total vehicle number, occurrence rates of traffic accidents and serious traffic accidents so as to discuss the causes and characteristics of road crash in China.</p><p><b>RESULTS</b>From 2003 to 2005, the numbers of traffic accidents, injuries and deaths as well as the mortality rates per 100,000 persons and per 10,000 vehicles declined in China. Until 2005, the total number of traffic accidents decreased to 450,000 and deaths to 99,000, with the mortality rate per 10,000 vehicles being 7.6 persons. While the drivers and passengers accounted for 33.2% and 26.6% of death casualties respectively in 2005. Most traffic accidents were caused by drivers, especially those with driving experience less than 3 years. Traffic accidents occurred on suburban roads accounted for 60%. The mortality rate of the traffic accidents per 100 km on the first grade road ranked the highest. The mortality rate of the traffic accidents on expressways ranked the highest, with continual increase of death and injury.</p><p><b>CONCLUSIONS</b>At present, the increase trend of traffic accidents and casualties in China has been slowed down to some extent and shows a declining tendency, but the situation is far away from being optimistic. In order to cut down the number of traffic accidents and casualties, we should pay more attention to training and managing drivers with less than three driving years and those driving buses. Strict prevention measures should be laid on traffic accidents on first grade roads, expressways and suburban roads as well as the enhancement on improving first-aid system.</p>

Primary diffuse large B-cell lymphoma of central nervous system belongs to activated B-cell-like subgroup: a study of 47 cases / 中华病理学杂志

<p><b>OBJECTIVE</b>To investigate the histogenetic origin of primary central nervous system diffuse large B-cell lymphoma (DLBCL) with respect to the stage of B-cell differentiation, and identification of the relevant prognostic markers.</p><p><b>METHODS</b>Immunohistochemical staining (EnVision method) for CD10, bcl-6, MUM-1, CD138 and FOXP1 antigens was performed on 47 paraffin-embedded sections.</p><p><b>RESULTS</b>CD10, bcl-6, MUM-1 and FOXP1 expression in the tumor cells were 6.4%, 53.2%, 91.5% and 93.6% respectively. There was no expression of CD138 in all the cases. Among the 47 patients, 43 cases (91.5%) showed an activated B-cell-like (ABC) phenotype: 21 (44.7%) were bcl-6+ and MUM-1+, suggesting an "activated germinal center (GC) B-cell-like" in origin; 22 (46.8%) were exclusively MUM-1+, suggesting an "activated non-GCB" in origin. No significant correlation of the classification and FOXP1 expression found on the outcome (P=0.279 and P=0.154).</p><p><b>CONCLUSIONS</b>Most primary central nervous system DLBCL are shown belonging to the ABC subgroup, suggesting that primary central nervous system DLBCL is quite similar to a DLBCL subset, which is derived from late GC to early post-GC B cell. The classification and FOXP1 expression do not show prognostic value in primary central nervous system DLBCL.</p>

Histologic subtyping and prognosis of thymoma: a study of 108 cases / 中华病理学杂志

<p><b>OBJECTIVE</b>To study the prognostic and clinical relevance of histologic subtyping of thymoma according to the World Health Organization (WHO) classification.</p><p><b>METHODS</b>The clinicopathologic features of 108 patients with thymoma removed surgically were retrospectively reviewed. The histologic diagnosis of the tumors was made on the basis of 2004 WHO classification by two experienced pathologists. The correlation between Masaoka tumor stage, WHO histologic subtype, completeness of resection, presence of myasthenia gravis, other clinical parameters (including age, gender and tumor size) and survival was studied.</p><p><b>RESULTS</b>According to WHO classification, there were 7 cases (6.5%) of type A thymoma, 19 cases (17.6%) of type AB thymoma, 23 cases (21.3%) of type B1 thymoma, 19 cases (17.6%) of type B2 thymoma, 27 cases (25.0%) of type B3 thymoma and 13 cases (12.0%) of type C thymoma. According to Masaoka tumor staging, 36 cases (33.3%) were in stage I, 34 cases (31.5%) in stage II, 27 cases (25.0%) in stage III and 11 cases (10.2%) in stage IV(a). The association between histologic subtype and Masaoka tumor stage was statistically significant (P = 0.000). The 5-year survival rates of type A, AB, B1, B2 and B3 thymoma cases were 100%, 100%, 93%, 83% and 43%, respectively; while the 10-year survival rates were 100%, 100%, 81%, 70% and 33%, respectively. The median survival time of type C thymoma was 62.5 months. Type B2 and B3 thymoma cases had an intermediate prognostic ranking in comparison with type C thymoma and other groups (P = 0.000). The 5-year survival rates of tumors in stage I, II and III were 100%, 77% and 54%, respectively; while the 10-year survival rates were 100%, 70% and 27%, respectively. The median survival time of patients in stage IV(a) was 14.0 months. Masaoka tumor stage was highly significant in predicting survival of patients (P = 0.000). On multivariate analysis, Masaoka tumor stage was an independent predictive factor for survival (P = 0.027). On the other hand, the WHO subtype (type A to B1 versus type B2 to B3 versus type C) and completeness of resection could predict the tumor-related survival.</p><p><b>CONCLUSIONS</b>The Masaoka tumor stage is the single most important prognostic factor of thymoma. The WHO histologic subtype and completeness of resection affect mainly the post-operative survival. The classification of thymoma may also reflect the clinical behavior of the tumor. Type A, AB and B1 thymomas belong to the low-risk group, while type B2 and B3 thymomas have an intermediate prognostic ranking. Type C thymoma carries the worst prognosis.</p>