Research progress on neoadjuvant immunotherapy for esophageal cancer / 中华放射肿瘤学杂志

Neoadjuvant therapy, especially neoadjuvant chemoradiotherapy, has become the standard preoperative treatment for locally advanced resectable esophageal cancer, whereas the recurrence and distant metastasis rates after surgery remain high. In recent years, programmed cell death protein 1 (PD-1) / programmed death-ligand 1 (PD-L1) immune checkpoint inhibitors have been widely adopted in immunotherapy for cancer. Whether PD-1/PD-L1 immune checkpoint inhibitors combined with neoadjuvant chemotherapy / neoadjuvant chemoradiotherapy could further improve clinical efficacy, increase the complete surgical resection rate and safety are current research hotspots. In this article, neoadjuvant immunotherapy combined with chemotherapy / radiochemotherapy for esophageal cancer was reviewed.

Application value of indocyanine green fluorescence in sentinel lymph node biopsy for early-stage tongue cancer and oropharyngeal cancer / 中南大学学报(医学版)

OBJECTIVES@#Occult cervical lymph node metastasis is the most important reason for recurrence of early-stage tongue cancer and oropharyngeal cancer. Cervical sentinel lymph node (SLN) biopsy may help to identify them. Pigment dyes and radionuclide were used to label SLN. Both of them had shortage. This study aims to investigate the application and clinical value of indocyanine green fluorescence imaging in cervical SLN biopsy for patients with early-stage tongue cancer and oropharyngeal cancer.@*METHODS@#Retrospective analysis was conducted on 23 patients with early tongue cancer and oropharyngeal cancer, who received surgical treatment and used indocyanine green as a tracer to find SLN in Hunan Cancer Hospital from April to October 2021. The detection rate of SLN was calculated and the distribution of SLN in different regions of the neck was analyzed.@*RESULTS@#SLN was successfully identified in 22 of 23 patients, with a detection rate of 95.65%. Among these 22 patients, 3 patients were found to have cancer metastasis, and the rate of occult lymph node metastasis was 13.63%. No pathologically positive lymph nodes were detected in SLN-negative patients, and thus the positive predictive rate was 100%. For patients with primary lesions located in the anterior 2/3 of the tongue, the constituent ratios of SLN in neck area I, II, III, and IV were 15.15%, 71.72%, 13.13%, and 0, respectively. For patients with primary lesions located in base of the tongue, the constituent ratios of SLN in neck area I, II, III, and IV were 0, 44.44%, 44.44%, and 11.12%, respectively.@*CONCLUSIONS@#Indocyanine green fluorescence imaging has a high detection rate with accurate positive prediction in the anterior cervical SLN biopsy in patients with early-stage tongue cancer and oropharyngeal cancer. Meanwhile, it can also reflect the lymphatic drainage of tumors located at different primary sites, which has high clinical value.

Discussion on medication rules of constipation in Guide to Clinical Practice with Medical Records based on data mining / 国际中医中药杂志

Objective:To explore the medication rules of Ye Tianshi in the treatment of constipation from his clinical records. Methods:The drugs in the prescriptions of intestinal obstruction and stool closure were collected in Guide to Clinical Practice with Medical Records. Then the frequency of the prescriptions and the herbs for the treatment,as well as the herbal natures, flavors and meridian belongings were analyzed by Excel, SPSS 22.0 and SPSS Modeler software. Results:The main syndrome types of Ye's treatment of fecal occlusive disease were internal accumulation of dampness and heat, deficiency of kidney Yang, hyperactivity of fire due to yin deficiency, deficiency of liver and kidney Yin, and dysfunction of lung. The medicinal properties were mainly warm, cold and flat, and the tastes were mainly sweet, pungent and bitter, and the meridians mainly belonged to spleen and stomach, lung, liver, kidney and heart. Armeniacae Semen Amarum, Angelica sinensis, Poria, Semen Platycladi, Trichosanthes kirilowii Maxim, Semen Persicae were often used. The commonly used drug pairs, included Armeniacae Amarum Semen and Trichosanthes kirilowii Maxim, Armeniacae Amarum Semen and Radix Curcumae Aromaticae, Angelica sinensis and Semen Platycladi and so on. Conclusions:Ye Tianshi takes spleen and stomach as the center, pays attention to the important position of dampness pathogen in the pathogenic process, and pays attention to lung Qi purging, liver Qi drainage and bladder gasification. It provides new treatment ideas and methods, guiding future doctors.

Sleep quality and sleep disturbances in Chinese pregnant women: a multicenter cross-sectional study / 中华耳鼻咽喉头颈外科杂志

Objective: This study aims to investigate the sleep quality of pregnant women in Xuhui District, Shanghai, and the related factors of sleep disturbances during pregnancy. Methods: From February 2019 to February 2021, we used online integrated sleep questionnaire (including PSQI, BQ, ESS, AIS) in Shanghai Jiao Tong University School of Medicine Affiliated Sixth People's Hospital, The International Peace Maternity and Child Health Hospitals of China Welfare Institution, and Shanghai Eighth People's Hospital, to investigate the sleep quality across pregnancy. We also collected maternal physical examination results, childbearing history, sociodemographic, and other clinical data. The prevalences and related factors of various sleep disturbances in pregnant women were analyzed, including insufficient/excessive nighttime sleep, low sleep efficiency, difficulty falling asleep, poor sleep quality, insomnia, daytime sleepiness, and high risk of sleep-disordered breathing (SDB). Results: This study includes 1 898 cases in the first trimester (T1), 3 099 cases in the second trimester (T2), and 1 539 cases in the third trimester (T3). Poor sleep quality (38.6%), daytime sleepiness (mild 41.9%, moderate 17.7%, severe 2.1%), and suspicious insomnia (32.3%) are most prevalent among women in T1 (P<0.01). In comparison, short sleep time (2.7%), long sleep time (8.6%), difficulty falling asleep (12.2%), poor sleep efficiency (35.4%), very poor sleep quality (6.7%), clinical insomnia (21.8%), and high-risk SDB (6.4%) are most prevalent among women in T3 (P<0.05). During pregnancy, late gestation (OR=1.016, 95%CI: 1.006-1.025) and multiple induced/drug abortions (OR=1.329, 95%CI: 1.043-1.692) are risk factors for poor sleep quality (PSQI>5), while multiple full-term deliveries (OR=0.800, 95%CI: 0.675-0.949) is its protective factor. Advanced maternal age (OR=0.976, 95%CI: 0.956-0.997), multiple full-term deliveries (OR=0.808, 95%CI: 0.680-0.959), late gestation (OR=0.983, 95%CI: 0.974-0.992) and hypertension (OR=0.572, 95%CI: 0.401-0.814) are protective factors for daytime sleepiness (ESS>6). The high-risk pregnancy category (OR=9.312, 95%CI: 1.156-74.978) is a risk factor for insomnia (AIS≥4), while multiple full-term deliveries (OR=0.815, 95%CI: 0.691-0.961) is its protective factor. High BMI (OR=1.334, 95%CI: 1.270-1.402) and hypertension (OR=4.427, 95%CI: 2.539-7.719) are risk factors for high-risk SDB in pregnant women. Conclusions: The prevalences of various sleep disturbances are high throughout pregnancy. Noticeably, symptoms of maternal SDB develop along with pregnancy. Different types of sleep disturbances are associated with different factors. Women of high-risk pregnancy category, in late gestation, with high BMI, hypertension, a history of induced/drug abortion, or without a history of full-term delivery can be at high risk of sleep disturbances during pregnancy.

Obstructive sleep apnea and metabolic syndrome: an association study based on a large sample clinical database / 中华耳鼻咽喉头颈外科杂志

Objective: To investigate the prevalence and associated risk factors of metabolic syndrome (MS) in patients with obstructive sleep apnea (OSA). Methods: From July 2007 to June 2017, a total of 8 155 adult subjects, including 6 484 males and 1 671 females, aged 18-90 (43.13±12.28), body mass index 14.61~59.56 (25.59±3.98) kg/m2,who were admitted to the Department of Otorhinolaryngology head and Neck surgery of The Sixth People's Hospital affiliated to Shanghai Jiao Tong University, were retrospectively analyzed. All patients underwent polysomnography and biochemical tests. Subjects were divided into four groups (non-OSA, mild OSA, moderate OSA, and severe OSA) according to OSA severity. The prevalence of MS was expressed as percentage, and the correlation between OSA and MS and its characteristic pathophysiological indicators was evaluated by logistic regression model after adjusting for factors such as gender, age, BMI, neck circumference, hip circumference, smoking and alcohol consumption, and was expressed by odds ratio (OR). SPSS 25.0 software was used for statistical analysis. Results: The overall prevalence of MS was 43.6%, and that of non-/mild/moderate/severe OSA group was 18.6%, 30.4%, 43.8%, 57.1%.Logistic regression showed that patients with mild/moderate/severe OSA had an increased risk of MS compared with non-OSA patients, with adjusted OR values and confidence intervals of 1.27 (1.05-1.54), 1.84 (1.53-2.22), and 2.08 (1.76-2.46), respectively (P<0.01).In addition, indicators of OSA anoxic burden [oxygen drop index(Toxygen=7.1), minimum blood oxygen(Tminimum=56.3), blood oxygen saturation below 90% cumulative time ratio (TCT90=10.6) ]were closely associated with MS disease(P<0.01), but sleep fragmentation index (arousals index) was not significantly associated with MS disease. Conclusion: The risk of MS gradually increases with the severity of OSA, and the indicators reflecting OSA hypoxia burden are closely related to MS disease.

Efficacy of Han-uvulopalatopharyngoplasty (HUPPP) combined with radiofrequency ablation of tongue base or HUPPP with traction of tongue base on moderate to severe patients with obstructive sleep apnea hypopnea syndrome (OSAHS):a multicenter randomized controlled trial / 中华耳鼻咽喉头颈外科杂志

Objective: To compare the therapeutic efficacy of Han-uvulopalatopharyngoplasty (HUPPP) combined with radiofrequency ablation of tongue base or HUPPP with traction of tongue base on moderate to severe patients with obstructive sleep apnea hypopnea syndrome (OSAHS). Methods: This is a multicenter randomized controlled trial. From March 2017 to July 2019, moderate to severe OSAHS patients from three clinical center in Shanghai who were intolerant to continuous positive airway pressure (CPAP) and with velopharyngeal and glossopharyngeal plane obstruction were enrolled in this study. According to the surgical type, they were 1∶1 randomized to HUPPP plus radiofrequency ablation of tongue base group (Ablation group) or HUPPP plus traction of tongue base group (Traction group). All patients completed over-night standard Polysomnography (PSG), upper-airway assessment (Friedman classification, Müller test, CT and cephalometric examination), preoperative routine examination, Epworth Sleepiness Scale (ESS) and Quebec sleep questionnaire (QSQ). Six to 12 months after operation, all the above-mentioned examinations were repeatedly performed. Changes of aforementioned variables before and after operation were assessed. Results: A total of 43 patients with moderate to severe OSAHS were enrolled in this study. One patient lost to follow-up, the remaining 21 were allocated to Ablation group and 21 were allocated to Traction group. The total therapeutic efficacy of all patients was 69.05% (61.90% in Ablation group and 76.19% in Traction group), but there was no statistical significance between the two groups (P= 0.317). The value of sleep scale score (ESS and QSQ), objective sleep variables (apnea-hypopnea index, oxygen saturation, percentage of time with blood oxygen less than 90% in total sleep time, oxygen desaturation index and micro-arousals) and upper airway cross-sectional area (palatopharyngeal and retrolingual area) of the two groups were improved (P<0.05), but the differences between the two groups were not statistically significant (P>0.05). Conclusion: For moderate to severe OSAHS who had glossopharyngeal plane obstruction, both HUPPP plus radiofrequency ablation of tongue base or HUPPP plus traction of tongue base are effective treatment for OSAHS, and the curative effect is similar. The choice of surgical type could be selected according to patient's or surgical conditions.

Antioxidant and antiaging effect of traditional Thai rejuvenation medicines in Caenorhabditis elegans / 中西医结合学报

OBJECTIVE@#This study explored the rejuvenation mechanisms of Thai polyherbal medicines using different approaches, including in vitro methods, as well as a well-defined nematode model, Caenorhabditis elegans.@*METHODS@#THP-R-SR012 decoction was selected from 23 polyherbal medicines, based on metal-chelating and chain-breaking antioxidant capacities. The influences of this extract on the survival and some stress biomarkers of C. elegans under paraquat-induced oxidative stress were evaluated. Furthermore, lifespan analysis and levels of lipofuscin accumulation were examined in senescent nematodes. The phytochemical profile of THP-R-SR012 was analyzed.@*RESULTS@#Supplementation with THP-R-SR012 decoction significantly increased the mean lifespan and reduced the oxidative damage to C. elegans under oxidative stress conditions. Further, THP-R-SR012 supplementation slightly influenced the lifespan and the level of lipofuscin accumulation during adulthood. Antioxidant-related phytochemical constituents of THP-R-SR012 decoction were rutin, naringenin, 3,4-dihydroxybenzoic acid, gallic acid, glycyrrhizic acid, demethoxycurcumin and 18α-glycyrrhetinic acid.@*CONCLUSION@#The antioxidant potential of THP-R-SR012 was due to its scavenging properties, its enhancement of antioxidant-related enzyme activities, and the presence of the antioxidant-related compound. These results support the traditional use of THP-R-SR012 decoction as a tonic for nourishing and strengthening the whole body.

Breakfast consumption and influencing factors of primary and middle school students in rural poor areas of Guizhou Province / 中国学校卫生

Objective@#To understand the current situation of breakfast consumption and its influencing factors in primary and middle school students in a poor rural area in a city in Guizhou Province, and to provide scientific basis for child nutrition education and intervention.@*Methods@#A stratified cluster sampling method was used to conduct a questionnaire survey of breakfast behavior and influencing factors among 2 833 students from 3 primary schools and 3 middle schools in a area of Guizhou Province from April to June 2019.@*Results@#The most frequently consumed breakfast was rice noodle products(71.66%), followed by fresh vegetables(45.89%), milk(35.55%), meat/egg/fish(29.33%), beans(19.52%), and fresh fruits(18.74%). The proportion of having breakfast everyday among elementary and middle school students who was 62.97%, and having breakfast 4-6 days peer week was 22.80%, and 14.23% with ≤3 days peer week, and the proportion of boys who ate breakfast every day(65.07%) was higher than girls(61.00%)(χ2=10.01, P<0.05). The proportion of low quality breakfast was 71.87%, and girls(73.68%) were higher than boys(69.94%)(χ2=9.29, P<0.05). Logistic regression analysis showed that grade of school, boarding school, and sleep quality are all influencing factors for whether to eat breakfast every day; grade of school, whether to stay at school were factors that affect breakfast quality(P<0.05).@*Conclusion@#The frequency and quality of breakfast need more improvement among middle and primary school students in a poor rural area of a city in Guizhou Province. Students, parents, and teachers should be educated on nutrition to promote healthy eating and sleeping habits and improve student health.

Cervical cancer with intraspinal epidural space metastasis: A case report and literature review / 肿瘤

Objective: To introduce the diagnosis and treatment of a patient suffering from cervical cancer with intraspinal epidural space metastasis, aiming to provide the further insight into the metastasis of advanced cervical cancer for clinicians. Methods: A middle-aged female patient with multiple metastasis of advanced cervical cancer was reported. The diagnosis and treatment process of this case was analyzed, and the related literatures were reviewed. Results: A 41 years old female was admitted to the hospital in July 2019 owing to the acratia and numbness of double lower limbs for 1 week. Moreover, the patient suffered from cervical cancer and had been operated for more than 4 years. According to her medical history and the test of contrast-enhanced MR of thoracolumbar segment, the lesion located in the intraspinal epidural space on the height of T5-7 vertebral body was considered to be metastatic cancer. To alleviate the symptom, the patient received the palliative operation. The mass obtained from the intraspinal epidural space by operation was pathologically confirmed as the cervical cancer metastasis. The myodynamia of double lower limbs increased 1 month after operation. However, the patient died from multiple organ failure due to advanced cancer in December 2019. Conclusion: The advanced cervical cancer generally invades the organs by hematogenous metastasis, but the intraspinal epidural metastasis is very rare and the prognosis is very poor. Therefore, it should be highly suspected that cervival cancer may be accompanied by brain or intraspinal epidural metastasis if the patient has cervical cancer history and the symptoms of nerve system.

Biomechanical characteristics of lumbosacral vertebra with unidirectional axial fusion fixation system / 中国组织工程研究

BACKGROUND: It is very important to apply a new technique of minimally invasive, firm fixation and antirotation in the treatment of lumbosacral degenerative diseases. OBJECTIVE: To provide theoretical basis for clinical application by biomechanical study on the treatment of lumbosacral vertebra instability with unidirectional axial fusion internal fixation system. METHODS: Six fresh adult lumbosacral specimens were selected, and the lumbosacral motion segments (L3-S5) were intercepted and divided into the following five groups: The intact normal control group (N group), bilateral isthmus fissure group (UN group), bilateral isthmus fissure + spur axial fusion internal fixation group (A group), bilateral isthmus fissure + axial screw fixation group (B group), bilateral spondylolysis + axial screw fixation alone + pedicle screw fixation on both sides group (C group). The three-dimensional motion range of flexion, lateral bending and rotation of segment L5/S1 in each group of internal fixation was compared with the axial compression resistance. RESULTS AND CONCLUSION: (1) The stability of fixed mode in A, B and C groups was better than that in the N group and the UN group under different directions of motion, and there were statistically significant differences between the groups (P 0.05). (3) In the left and right direction of rotation, the three-dimensional motion range of rotation in the A group was significantly reduced compared with that in the B group, and there was no significant difference between A group and C group (P > 0.05). (4) The lumbosacral vertebra unidirectional axial fusion internal fixation system has good biomechanical stability and strong anti-rotation ability, and is expected to be used in clinic.

Effect of anteromedial thigh perforator flap on repair of defects caused by oral cancer surgery / 中华医学美学美容杂志

Objective:To introduce the advantages and clinical experience of relaying antero thigh flap in the resurfacing of the donor defect after anteromedial thigh (AMT) flap transfer for oral cancer defect reconstruction.Methods:The number, courses and location of antero thigh perforators were recorded in 6 adult specimens, (3 male and 3 female). Specimen was produced via femoral artery perfusion after joining lead oxide red setting, up to the inguinal ligament, down to the superior margin of patella, lateral to the lateral femoral intermuscular septum, medial near the lateral margin of adductor longus muscle. From February 2016 to December 2018 in Hunan Provincial Cancer Hospital, 13 cases (11 male and 2 female) with oral carcinoma (8 tongue carcinoma and 5 buccal cancer), leaving tongue or mouth defects which were reconstructed by free AMT perforator flaps.Results:All free AMT flaps were harvested smoothly, the flap size ranged from 7.5 cm×4.5 cm to 13.0 cm×7.5 cm, the donor sites were reconstructed with relaying ALT flaps in 10 cases, with relaying AMT flaps in 3 cases, the relaying ALT flap size ranged from 8.5 cm×5.0 cm to 18.0 cm×7.0 cm, the relaying AMT flap size ranged from 7.5 cm×4.0 cm to 15.0 cm×7.0 cm. All flaps survived uneventfully, no vascular crisis or wound dehiscence, infection occurred. All patients were followed up for 12~28 months, all flaps healed smoothly, only linear scar was left in the donor sites, the color, appearance and contour of flaps were natural, and the function of thighs were not affected.Conclusions:When it is difficult to elevate the free anterolateral thigh flap, the free anteromedial thigh flap can be used to repair the oral cancer defect. When the direct closure of the flap donor area is of big tension, the relaying antero flap can be used to reconstruct the donor site, minimize the operation time and improve the outcome.

Conjoined bipedicle deep inferior epigastric perforator flap in reconstruction of unilateral breast / 中华显微外科杂志

Objective:To explore the clinical application of conjoined bipedicle deep inferior epigastric perforator flap (DIEP) in reconstruction of unilateral breast for patients with breast cancer.Methods:From August, 2007 to Feburary, 2017, 41 cases of breast cancer patients received conjoined bipedicle DIEP to reconstruct breasts at the same time of radial operation of mastocarcinoma or in the second phase. Their age ranged from 27 to 49 (34.5±2.7) years old. Twenty-two cases had one-staged and other 19 had two-staged breast reconstruction. All patients were in scheduled followed-up.Results:In this study, 41 conjoined bipedicle DIEP were harvested, including 12 of lateral branch type, 9 of medial branch type, and 20 of combined lateral and medial branch type. The length of flap was (24.5±0.5) cm, the width of flap was (10.8±2.8) cm, and the thickness of flap was(5.5±0.4) cm. The length of flap pedicle was (12.5±0.6) cm. The average weight of flap was 565 (ranged 365-1 050) g. The vascular combinations in the receiving area included: ①Eighteen cases of proximal and distal thoracic vessels. ②Eleven cases proximal ends of internal mammary vessels and lateral thoracic vessels. ③Eight cases of proximal ends of internal mammary vessels and thoracodorsal vessels. ④Four cases thoracodorsal vessels and lateral thoracic vessels. In 3 patients, in order to further promote the venous outflow of the flap, the superficial inferior epigastric vein of the flap was anastomosed with the thoracoacromial vein of the recipient area. All flaps were successful and completely survived without marginal necrosis or infection. The shape, texture and elasticity of the reconstructed breasts were good without flap contractive deformity. There were only linear scars left in the donor sites, and function of abdomen was not affected. All 41 patients were followed-up for 12 to 50 months, with an average of 15.8 months with satisfied results. No local recurrence happened. Only linear scar was left in the donor site of abdomen, and the function of abdominal wall was not affected. In all cases bilateral rectus abdominis muscle strength was level 5.Conclusion:The conjoined bipedicle DIEP could be a safe and valuable option as an alternative method for autologous breast reconstruction.

Analysis on clinical data in 36 cases of recurrent glioblastoma retreatment / 重庆医学

Objective To study the factors influencing prognosis in the patients with recurrent glioblastoma muhiforme (GBM) and to investigate the effect of retreatemt.Methods The retrospective analysis method was adopted to collect the clinical and follow up data in 36 cases of recurrent GBM retreatment in the neurosurgery department of this hospital from March 2008 to March 2013.The prognosis influencing factors were analyzed.Results The univariate analysis results showed that the gender,resection degree,treatment mode and initial scheme had the influence on the progression free survival(P＜0.05).The resection degree had an impact on the overall survival(P＜0.05).The multivariate analysis results showed that KPS score,resection degree and treatment mode had effect on the progression free survival(P＜0.05).The resection degree had an influence on the overall survival (P＜0.05).Conclusion If the patients with recurrent GBM still hasthe chance of operation whole excision,the re-treatment can reach the effect for relieving the symptoms,improving the quality of life and prolonging the survival period.

Study on a New Ultraviolet Sterilizer to the Surface Disinfection of the Ultrasound Probe / 生物医学与环境科学（英文）

We studied the disinfection effect of a new ultraviolet (UV) sterilizer and its utilization on ultrasound probe surfaces. Carrier quantitative germicidal tests, simulated on-the-spot trials, and organic substance influence tests were used to carry out experimental observation. Artificially infected probes were disinfected using the sterilizer or a germicidal lamp for comparison. The total number and types of bacteria were determined and identified. Our results demonstrated the sterilizer had the best disinfection effect among three different disinfection methods in hospital. The sterilizer has been used in a hospital setting for 2 years with no notable damage to the ultrasound probe instrument. It has the advantages of fast disinfection, high disinfection effect, and good compatibility with the ultrasound instrument, worthy of being a promoted application in medical institutions.

Relationship between serum level of caveolin-1 and early neurological deterioration in patients with acute cerebral infarction / 上海交通大学学报（医学版）

Objective·To investigate the relationship between serum level of caveolin-1 (Cav-1) and early neurological deterioration (END) in patients with acute cerebral infarction. Methods·A total of 126 consecutive patients with acute cerebral infarction were recruited from July 2016 to January 2017 in Department of Neurology, the First Affiliated Hospital of Chongqing Medical University. The serum Cav-1 levels of all patients were detected by enzyme-linked immunosorbent assay (ELISA) test. The neurological deficits were assessed by the National Institutes of Health Stroke Scale (NIHSS) and the Glasgow Coma Scale (GCS) at the same time. Compared with the admission baseline NIHSS score, if second motor NIHSS score increased ≥ 1 point or the total NIHSS score increased ≥ 2 points within 3 days after hospitalization, they were classified as END group, otherwise they were classified as non-END group. Multivariable Logistic regression analysis was used to examine the independent predictors of END in the patients. Receiver operating characteristic (ROC) curves were obtained to explore Cav-1 levels in predicting END. Results·Serum Cav-1 levels in END group were significantly higher than those in non-END group [(29.88±19.57) ng/mL vs (16.08±13.37) ng/mL, P=0.000]. Based on the ROC curves, the best cut-off point of serum Cav-1 for predicting END was 16.55 ng/mL. The sensitivity and specificity were 73.33％ and 74.07％, respectively. Multivariable Logistic regression analysis showed that Cav-1≥16.55 ng/mL remained an independent predictor of END (OR=4.936, 95％CI 1.608-15.155, P=0.005). Conclusion·Serum Cav-1 is an independent predictor of END in patients with acute cerebral infarction.

Mechanism of Poly(I∶C)-induced apoptosis in lung adenocarcinoma A549 cells / 国际肿瘤学杂志

Objective To study the effects of Poly(I:C) on lung adenocarcinoma A549 cells viability and illuminate the mechanism of Poly (I:C)-induced apoptosis in A549 cells.Methods A549 cells were transfected with the complex of Poly(I:C) and lipofectamine 3000.The viability of A549 cells was tested by methyl thiazolyl tetrazolium (MTF) method.The apoptotic cells were tested by flow cytometry.The caspase proteins were tested by Western blotting and the expressions of interferon-β (IFN-β) and CXCL-10 were assayed by real-time PCR.After employing the pan-caspase inhibitor Z-VAD-FMK and caspase-8 inhibitor Z-IETD-FMK,the variation of Poly (I:C) proapoptosis in A549 cells was observed.RNA interfering experiments were employed to knock down melanoma differentiation related antigen 5 (MDA5) or retinoic acidinduced gene Ⅰ (RIG-Ⅰ),and the above indexes were tested.Results The viability of A549 cells was significantly reduced to 74.92％ ±--6.24％ after 200 ng/ml Poly (I:C) transfection compared with that before transfection (95.32％ ± 3.05％,t =2.883,P =0.041).The apoptotic rates induced by 100,200,400 ng/ml Poly(I:C) were 9.97％-± 0.88％,23.63％-± 1.41％,32.57％-± 2.39％,respectively.All of them were higher than that in the control group (0.74％-± 0.15％),with significant differences (t =4.489,P =0.002;t =11.616,P =0.000;t =16.932,P =0.000).Besides,the death receptor pathway proteins such as TNF-related apoptosis inducing ligand (TRAIL),cleaved-caspase-8 and cleaved-caspase-3 increased obviously.MDA5/RIG-Ⅰ pathway was also activated dramatically and the expressions of IFN-β,CXCL-10 were significantly up-regulated.The apoptotic rates reduced to 3.17％ ± 0.66％,5.35％ ± 0.64％ with pancaspase inhibitor Z-VAD-FMK and caspase-8 inhibitor Z-IETD-FMK pretreatment,compared with the control group (15.87％ ±0.93％),and the differences were statistically significant (t =8.643,P =0.001;t =6.824,P =0.002).Moreover,the expressions of TRAIL,IFN-β and CXCL-10 induced by Poly (I:C) were inhibited with MDA5 or RIG-Ⅰ depletion.Conclusion Poly(I:C) can reduce the survival rate of A549 cells and promote the apoptosis mainly by activating the death-receptor pathway mediated by MDA5/RIG-Ⅰ probably,which may involve in IFN-β,CXCL-10.

Effects comparison of chemical hypoxia induced by cobalt chloride and hypoxia environment on rat pulmonary arterial fibroblasts / 重庆医学

Objective To compare the effects of cobalt chloride (CoCl2) induced chemical hypoxia and hypoxia environment on the proliferation,migration and phenotype transformation of rat primary pulmonary artery fibroblasts (PAFs).Methods Primary PAFs were isolated and cultured.Cells were stimulated by CoCl2,or hypoxia cell culture (1% O2) was used to stimulate and induce PAFs.Then the effects of CoCI2 and hypoxia environment on PAFs were compared by CCK-8 assay,scratch assay,transwell assay,phenotype marker protein expression and PI3K/Akt signaling pathway protein expression.Results Compared with the control group,100 μmol/mL CoCl2 stimulation had no significant effect on the cell proliferation activity,cell migration ability and phenotype transformation ability of PAFs (P>0.05);while 1% O2 could significantly improve the cell proliferation and migration activities of PAFs as well as the upregulation of α-SMA expression (P<0.05).Conclusion There exist differences of effects between CoCl2 induced chemical hypoxia and hypoxia environment on promoting cell proliferation, cell migration and phenotype transformation in PAFs.

Distribution of pathogens from bile and clinical characteristics of patients with hepatobiliary diseases / 中国感染控制杂志

Objective To investigate isolation of pathogens from bile and clinical characteristics of patients with hepatobiliary diseases.Methods Bacterial culture result of bile and related clinical data of patients with hepatobiliary diseases in a hospital were collected and analyzed by retrospective survey.Results A total of 406 bile specimens from patients with hepatobiliary diseases were collected,the positive rate of culture was 64.53％.Of 262 positive specimens,62.21％ (n =163),32.83％ (n =86),and 4.96％ (n =13) were isolated single pathogen,2 kinds of pathogens,and 3 kinds of pathogens respectively.374 pathogenic strains were isolated,242 (64.71％),131 (35.02 ％),and 1 (0.27 ％) were gram-negative bacteria,gram-positive bacteria,and fungus respectively.Patients with cirrhosis of liver,history of hepatobiliary surgery,and cholelithiasis had higher isolation rates of pathogens from bile than control group(all P＜0.05),isolation rates of pathogens from bile in patients with cholelithiasis of different sites were varied;but there was no significant differences among patients of different age,gender,and whether or not with hepatobiliary tumors(all P＞0.05).There were no statistical difference in constitute of pathogenic species from bile between patients with and without gallstones,as well as with and without history of hepatobiliary surgery(both P＞0.05);while constitute of pathogenic species from bile between patients with and without cirrhosis of liver was statistically different(x2 =14.058,P =0.001).Conclusion Pathogens from bile in patients with hepatobiliary diseases are mainly Enterobacteriaceae and Enterococcus spp.which caused single infection.Positive culture rate of pathogens from bile is higher in patients with cholelithiasis,history of hepatobiliary surgery,and liver cirrhosis.

Effect of rapamycin on proliferation of rat heart valve interstitial cells in vitro / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the effect of rapamycin on the proliferation of rat valvular interstitial cells in primary culture.</p><p><b>METHODS</b>The interstitial cells isolated from rat aortic valves were cultured and treated with rapamycin, and the cell growth and cell cycle changes were analyzed using MTT assay and flow cytometry, respectively. RT-PCR was used to detect mRNA expression levels of S6 and P70S6K in cells, and the protein expressions level of S6, P70S6K, P-S6, and P-P70S6K were detected using Western blotting.</p><p><b>RESULTS</b>Rat aortic valvular interstitial cells was isolated successfully. The rapamycin-treated cells showed a suppressed proliferative activity (P<0.05), but the cell cycle distribution remained unaffected. Rapamycin treatment resulted in significantly decreased S6 and P70S6K protein phosphorylation level in the cells (P<0.05).</p><p><b>CONCLUSION</b>The mechanism by which rapamycin inhibits the proliferation of valvular interstitial cells probably involves suppression of mTOR to lower S6 and P70S6K phosphorylation level but not direct regulation of the cell cycle.</p>