1.Evaluation of metoprolol standard dosing pathway in Chinese patients with acute coronary syndrome: a prospective multicenter single-arm interventional study.
Xiao-Yun YIN ; Yun-Mei ZHANG ; Ai-Dong SHEN ; Jing-Ping WANG ; Zhe-Xun LIAN ; Yi-Bing SHAO ; Wen-Qi ZHANG ; Shu-Ying ZHANG ; Yang ZHENG ; Kang CHENG ; Biao XU ; Cheng-Xing SHEN ; Rong-Chong HUANG ; Jin-Cheng GUO ; Guo-Sheng FU ; Dong-Kai SHAN ; Dan-Dan LI ; Yun-Dai CHEN
Journal of Geriatric Cardiology 2023;20(4):256-267
OBJECTIVE:
To evaluate the feasibility and tolerability of metoprolol standard dosing pathway (MSDP) in Chinese patients with acute coronary syndrome (ACS).
METHODS:
In this multicenter, prospective, open label, single-arm and interventional study that was conducted from February 2018 to April 2019 in fifteen Chinese hospitals. A total of 998 hospitalized patients aged ≥ 18 years and diagnosed with ACS were included. The MSDP was applied to all eligible ACS patients based on the standard treatment recommended by international guidelines. The primary endpoint was the percentage of patients achieving the target dose at discharge (V2). The secondary endpoints included the heart rate and blood pressure at V2 and four weeks after discharge (V4), and percentage of patients experiencing bradycardia (heart rate < 50 beats/min), hypotension (blood pressure < 90/60 mmHg) and transient cardiac dysfunction at V2 and V4.
RESULTS:
Of the 998 patients, 29.46% of patients achieved the target dose (≥ 95 mg/d) at V2. The total population was divided into two groups: target group (patients achieving the target dose at V2) and non-target group (patients not achieving the target dose at V2). There was significant difference in the reduction of heart rate from baseline to discharge in the two groups (-4.97 ± 11.90 beats/min vs. -2.70 ± 9.47 beats/min, P = 0.034). There was no significant difference in the proportion of bradycardia that occurred in the two groups at V2 (0 vs. 0, P = 1.000) and V4 (0.81% vs. 0.33%, P = 0.715). There was no significant difference in the proportion of hypotension between the two groups at V2 (0.004% vs. 0.004%, P = 1.000) and V4 (0 vs. 0.005%, P = 0.560). No transient cardiac dysfunction occurred in two groups during the study. A total of five adverse events (1.70%) and one serious adverse event (0.34%) were related to the pathway in target group.
CONCLUSIONS
In Chinese ACS patients, the feasibility and tolerability of the MSDP have been proved to be acceptable.
2.WU Lian-zhong's experience in treating spasmodic torticollis by Kaiqiao Shunjin method.
Li YU ; Bei-Liang MIAO ; Yan SHEN ; Si-Qi LI ; Shu WANG ; Lian-Zhong WU
Chinese Acupuncture & Moxibustion 2022;42(6):679-682
Professor WU Lian-zhong's experience in treating spasmodic torticollis by Kaiqiao Shunjin method (resuscitation and regulating muscle) is summarized in this paper. The pathogenesis of spasmodic torticollis is the occluded brain orifices and delirium, qi disorder of meridian tendons, specifically divided into five categories: damp-heat, liver-yang hyperactivity, liver-kidney yin deficiency, deficiency of the governor vessel, excess of the governor vessel. The treatment should be based on the symptoms and the root causes, the symptoms should be the main treatment, and the root cause should be treated based on syndrome differentiation. The main treatment is Kaiqiao Shunjin method (resuscitation and regulating muscle), and to take the chief (five heart acupoints-Shuigou [GV 26], Laogong [PC 8], Yongquan [KI 1]), deputy (Yintang [GV 24+], Shangxing [GV 23] through Baihui [GV 20], Ximen [PC 4]), assistant (Fenglong [ST 40], Lianquan [CV 23], combined with tongue needle prick), envoy (Hanyan [GB 4]) as the basic main acupoints, at the same time cooperate with local acupoints to remove knots and accumulation. Finally, syndrome differentiation is adopted to dredge meridians and disperse knots, regulate the governor vessel, and nourish yin and dispel wind.
Acupuncture Points
;
Acupuncture Therapy/history*
;
Humans
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Meridians
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Needles
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Syndrome
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Torticollis/therapy*
3.A multicenter epidemiological study of acute bacterial meningitis in children.
Cai Yun WANG ; Hong Mei XU ; Jiao TIAN ; Si Qi HONG ; Gang LIU ; Si Xuan WANG ; Feng GAO ; Jing LIU ; Fu Rong LIU ; Hui YU ; Xia WU ; Bi Quan CHEN ; Fang Fang SHEN ; Guo ZHENG ; Jie YU ; Min SHU ; Lu LIU ; Li Jun DU ; Pei LI ; Zhi Wei XU ; Meng Quan ZHU ; Li Su HUANG ; He Yu HUANG ; Hai Bo LI ; Yuan Yuan HUANG ; Dong WANG ; Fang WU ; Song Ting BAI ; Jing Jing TANG ; Qing Wen SHAN ; Lian Cheng LAN ; Chun Hui ZHU ; Yan XIONG ; Jian Mei TIAN ; Jia Hui WU ; Jian Hua HAO ; Hui Ya ZHAO ; Ai Wei LIN ; Shuang Shuang SONG ; Dao Jiong LIN ; Qiong Hua ZHOU ; Yu Ping GUO ; Jin Zhun WU ; Xiao Qing YANG ; Xin Hua ZHANG ; Ying GUO ; Qing CAO ; Li Juan LUO ; Zhong Bin TAO ; Wen Kai YANG ; Yong Kang ZHOU ; Yuan CHEN ; Li Jie FENG ; Guo Long ZHU ; Yan Hong ZHANG ; Ping XUE ; Xiao Qin LI ; Zheng Zhen TANG ; De Hui ZHANG ; Xue Wen SU ; Zheng Hai QU ; Ying ZHANG ; Shi Yong ZHAO ; Zheng Hong QI ; Lin PANG ; Cai Ying WANG ; Hui Ling DENG ; Xing Lou LIU ; Ying Hu CHEN ; Sainan SHU
Chinese Journal of Pediatrics 2022;60(10):1045-1053
Objective: To analyze the clinical epidemiological characteristics including composition of pathogens , clinical characteristics, and disease prognosis acute bacterial meningitis (ABM) in Chinese children. Methods: A retrospective analysis was performed on the clinical and laboratory data of 1 610 children <15 years of age with ABM in 33 tertiary hospitals in China from January 2019 to December 2020. Patients were divided into different groups according to age,<28 days group, 28 days to <3 months group, 3 months to <1 year group, 1-<5 years of age group, 5-<15 years of age group; etiology confirmed group and clinically diagnosed group according to etiology diagnosis. Non-numeric variables were analyzed with the Chi-square test or Fisher's exact test, while non-normal distrituction numeric variables were compared with nonparametric test. Results: Among 1 610 children with ABM, 955 were male and 650 were female (5 cases were not provided with gender information), and the age of onset was 1.5 (0.5, 5.5) months. There were 588 cases age from <28 days, 462 cases age from 28 days to <3 months, 302 cases age from 3 months to <1 year of age group, 156 cases in the 1-<5 years of age and 101 cases in the 5-<15 years of age. The detection rates were 38.8% (95/245) and 31.5% (70/222) of Escherichia coli and 27.8% (68/245) and 35.1% (78/222) of Streptococcus agalactiae in infants younger than 28 days of age and 28 days to 3 months of age; the detection rates of Streptococcus pneumonia, Escherichia coli, and Streptococcus agalactiae were 34.3% (61/178), 14.0% (25/178) and 13.5% (24/178) in the 3 months of age to <1 year of age group; the dominant pathogens were Streptococcus pneumoniae and the detection rate were 67.9% (74/109) and 44.4% (16/36) in the 1-<5 years of age and 5-<15 years of age . There were 9.7% (19/195) strains of Escherichia coli producing ultra-broad-spectrum β-lactamases. The positive rates of cerebrospinal fluid (CSF) culture and blood culture were 32.2% (515/1 598) and 25.0% (400/1 598), while 38.2% (126/330)and 25.3% (21/83) in CSF metagenomics next generation sequencing and Streptococcus pneumoniae antigen detection. There were 4.3% (32/790) cases of which CSF white blood cell counts were normal in etiology confirmed group. Among 1 610 children with ABM, main intracranial imaging complications were subdural effusion and (or) empyema in 349 cases (21.7%), hydrocephalus in 233 cases (14.5%), brain abscess in 178 cases (11.1%), and other cerebrovascular diseases, including encephalomalacia, cerebral infarction, and encephalatrophy, in 174 cases (10.8%). Among the 166 cases (10.3%) with unfavorable outcome, 32 cases (2.0%) died among whom 24 cases died before 1 year of age, and 37 cases (2.3%) had recurrence among whom 25 cases had recurrence within 3 weeks. The incidences of subdural effusion and (or) empyema, brain abscess and ependymitis in the etiology confirmed group were significantly higher than those in the clinically diagnosed group (26.2% (207/790) vs. 17.3% (142/820), 13.0% (103/790) vs. 9.1% (75/820), 4.6% (36/790) vs. 2.7% (22/820), χ2=18.71, 6.20, 4.07, all P<0.05), but there was no significant difference in the unfavorable outcomes, mortility, and recurrence between these 2 groups (all P>0.05). Conclusions: The onset age of ABM in children is usually within 1 year of age, especially <3 months. The common pathogens in infants <3 months of age are Escherichia coli and Streptococcus agalactiae, and the dominant pathogen in infant ≥3 months is Streptococcus pneumoniae. Subdural effusion and (or) empyema and hydrocephalus are common complications. ABM should not be excluded even if CSF white blood cell counts is within normal range. Standardized bacteriological examination should be paid more attention to increase the pathogenic detection rate. Non-culture CSF detection methods may facilitate the pathogenic diagnosis.
Adolescent
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Brain Abscess
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Child
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Child, Preschool
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Escherichia coli
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Female
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Humans
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Hydrocephalus
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Infant
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Infant, Newborn
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Male
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Meningitis, Bacterial/epidemiology*
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Retrospective Studies
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Streptococcus agalactiae
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Streptococcus pneumoniae
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Subdural Effusion
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beta-Lactamases
4.Risk factors for recurrence and survival analysis in locally advanced T4a papillary thyroid carcinoma after R0 resection.
Jia Ming CHEN ; Ju Guo FANG ; Qi ZHONG ; Yan Song LIN ; Li Zhen HOU ; Hong Zhi MA ; Ling FENG ; Shi Zhi HE ; Qian SHI ; Meng LIAN ; Meng WANG ; Xixi SHEN
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2022;57(9):1044-1051
Objective: To investigate the treatment outcomes and risk factors of postoperative recurrence in T4a papillary thyroid carcinoma (PTC). Methods: A total of 185 patients with locally advanced T4a PTC treated in Beijing Tongren Hospital, Capital Medical University from January 2006 to December 2019 were retrospectively analyzed, including 127 females and 58 males, aged between 18 and 80 years, with 74 patients aged over 55 years. According to AJCC thyroid tumor staging, 111 cases were stage I (T4aN0M0 26 cases, T4aN1aM0 35 cases, and T4aN1bM0 50 cases) and 74 cases were stage Ⅲ (T4aN0M0 29 cases, T4aN1aM0 19 cases, and T4aN1bM0 26 cases). Kaplan-Meier method was used to calculate the overall survival and the recurrence-free rate, and univariate and multivariate logistic regression analyses on the clinical data were performed. Results: Recurrent laryngeal nerve invasion was observed in 150 cases, trachea invasion in 61 cases, esophagus invasion in 30 cases, and laryngeal structure invasion in 10 cases. Postoperative follow-up periods were 24-144 months, with an average of 68.29 months. Of the 185 patients, 18 (9.73%) had recurrences or metastases, including 9 cases (4.86%) died of recurrences or metastases. The 5-year and 10-year overall survival rates were respectively 95.21% and 93.10%. The 5-year and 10-year disease-free survival rates were respectively 89.65% and 86.85%. Univariate analysis showed that age of onset, tumor diameter, preoperative recurrent laryngeal nerve palsy, esophageal invasion and cervical lymph node metastasis were the risk factors for postoperative recurrence of T4a PTC(all P<0.05). Multivariate analysis showed that preoperative recurrent laryngeal nerve palsy (OR=3.27, 95%CI: 1.11-9.61, P=0.032) and lateral cervical lymph node metastasis (OR=4.71, 95%CI: 1.19-18.71, P=0.027) were independent risk factors for T4a PTC recurrence. Survival rate of patients with T4a PTC involving only the recurrent laryngeal nerve or the outer tracheal membrane was significantly better than that of patients with tracheal invasion (P<0.05). Conclusions: T4a PTC patients with R0 resection can still achieve good efficacy. Preoperative recurrent laryngeal nerve palsy and lateral cervical lymph node metastasis are independent risk factor for postoperative recurrence in the patients.
Adolescent
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Adult
;
Aged
;
Aged, 80 and over
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Carcinoma/pathology*
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Carcinoma, Papillary/surgery*
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Female
;
Humans
;
Lymphatic Metastasis
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Male
;
Middle Aged
;
Neoplasm Recurrence, Local/surgery*
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Retrospective Studies
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Risk Factors
;
Survival Analysis
;
Thyroid Cancer, Papillary/surgery*
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Thyroid Neoplasms/pathology*
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Thyroidectomy/adverse effects*
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Vocal Cord Paralysis/etiology*
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Young Adult
5.External Quality Analysis of Quality Indicators on Specimen Acceptability
Yuan-Yuan YE ; Wei WANG ; Hai-Jian ZHAO ; Feng-Feng KANG ; Wei-Xing LI ; Zhi-Ming LU ; Wei-Min ZOU ; Yu-Qi JIN ; Wen-Fang HUANG ; Bin XU ; Fa-Lin CHEN ; Qing-Tao WANG ; Hua NIU ; Bin-Guo MA ; Jian-Hong ZHAO ; Xiang-Yang ZHOU ; Zuo-Jun SHEN ; Wei-Ping ZHU ; Yue-Feng L(U) ; Liang-Jun LIU ; Lin ZHANG ; Li-Qiang WEI ; Xiao-Mei GUI ; Yan-Qiu HAN ; Jian XU ; Lian-Hua WEI ; Pu LIAO ; Xiang-Ren A ; Hua-Liang WANG ; Zhao-Xia ZHANG ; Hao-Yu WU ; Sheng-Miao FU ; Wen-Hua PU ; Lin PENG ; Zhi-Guo WANG
Journal of Modern Laboratory Medicine 2018;33(2):134-138,142
Objective To analyze the status of quality indicators(QI) on specimen acceptability and establish preliminary qual ity specification.Methods Web based External Quality Assessment system was used to collect data of laboratories partici pated in "Medical quality control indicators in clinical laboratory" from 2015 to 2017,including once in 2015 and 2017 and twice in 2016.Rate and sigma scales were used to evaluate incorrect sample type,incorrect sample container,incorrect fill level and anticoagulant sample clotted.The 25th percentile (P25) and 75th percentile (P75) of the distribution of each QI were employed to establish the high,medium and low specification.Results 5 346,7 593,5 950 and 6 874 laboratories sub mitted the survey results respectively.The P50 of biochemistry (except incorrect fill level),immunology and microbiology reach to 6σ.The P50 of clinical laboratory is 4 to 6σ except for incorrect sample container.There is no significant change of the continuous survey results.Based on results in 2017 to establish the quality specification,the P25 and P75 of the four QIs is 0 and 0.084 4 %,0 and 0.047 6 %,0 and 0.114 2 %,0 and 0.078 4 %,respectively.Conclusion According to the results of the survey,most laboratories had a faire performance in biochemistry,immunology and microbiology,and clinical laboratory needs to be strengthened.Laboratories should strengthen the laboratory information system construction to ensure the actual and reliable data collection,and make a long time monitoring to achieve a better quality.
6.New situation and new strategies——research and development and internationalization of new drugs and health products of traditional Chinese medicine
Ning JIANG ; Chun-Hui QI ; Liang CAO ; Lan-Ying CHEN ; Jin-Hui GU ; Yong KANG ; Inkyeom KIM ; Xiao-Yuan LIAN ; Yin LU ; Gui-Yuan LYU ; Ke NIE ; Yun QI ; SCHINI-KERTH VALÉRIE ; SPEDDING MICHAEL ; WAINWRIGHT CHERRY ; Yue-Hua WANG ; Wei XIAO ; Yong YANG ; Lin-Zhong YU ; Dan-Shen ZHANG ; Yong-He ZHANG ; Wen-Xia ZHOU ; Guan-Hua DU ; Yong-Xiang ZHANG
Chinese Journal of Pharmacology and Toxicology 2018;32(1):1-50
The 2017 China (Lianyungang) International Medical Technology Conference was held in Lianyungang,Jiangsu Province during November 15-17,2017.During this conference,the Division for Traditional Chinese Medicine and Natural Products Pharmacology of Chinese Pharmacological Society (CNPHARS) and Jiangsu Kanion Pharmaceutical Co. Ltd.jointly held the Forum on R&D and Interna-tionalization of New Drugs and Health Products of Traditional Chinese Medicine.The forum was co-chaired by Professor ZHANG Yong-xiang, President of CNPHARS, Chair of Division for Traditional Chinese Medicine and Natural Products Pharmacology of CNPHARS,and Chair of the Natural Product Section of Inter-national Union of Basic&Clinical Pharmacology(IUPHAR), Professor DU Guan-hua,former President of CNPHARS and Vice-Chair of Division for Traditional Chinese Medicine and Natural Products Pharmacology of CNPHARS,and Dr.XIAO Wei,Chairman of the Board of Jiangsu Kanion Pharmaceutical Co. Ltd. And Vice-Chair of Division for Traditional Chinese Medicine and Natural Products Pharmacology of CNPHARS. More than 70 scholars attended the forum, including four foreign experts [Michael SPEDDING, Secretary-General of IUPHAR; Professor Valérie B. SCHINI-KERTH, Vice-Chair of the Natural Product Section of IUPHAR; Professor Cherry WAINWRGHT, Director of Centre for Natural Product Drugs of Robert Gordon University; Professor InKyeom KIM, Director of the Korean Society of Pharmacology], members of the Division for Traditional Chinese Medicine and Natural Products Pharmacology of CNPHARS and leading researchers at Jiangsu Kanion Pharmaceutical Co.,Ltd.GU Jin-hui,Director of the Division of National Science and Technology Major Project for Drug Innovation,Department of Health Science,Technology and Education,National Health and Family Planning Commission of the People's Republic of China was also invited to attend the forum. Representatives discussed the R&D and internationalization of new drugs and health products of traditional Chinese medicine.The summary of views and advice of some experts was published here for the purpose of promoting domestic and overseas academic exchange, and playing an active role in improving the level of R&D and internationalization of new drugs and health products of traditional Chinese medicine in China.
7.Optimization of Purification and Isolation of Punicalagin from Pomegranate Peel
Shu LIU ; Wanli SHEN ; Guan LIAN ; Wen CHEN ; Rong QI
China Pharmacist 2017;20(1):14-19
Objective: To establish the methods for extraction and isolation of punicalagin from pomegranate peel, and further study the purification and quantification of punicalagin. Methods: Using an ultrasonic-assisted extraction method, punicalagin in pomegranate peel was extracted at room temperature by 50% ethanol with 20-fold volume of raw material. The content of punicalagin in the crude extract was determined by HPLC. To optimize the purification process of punicalagin, static adsorption and desorption experi-ments were employed to study five kinds of macroporous adsorbent resins (D101, A8-8, NKA-9, HPD-100 and HPD-500) for the one with the highest purification efficacy of punicalagin. In addition, the technical parameters of the macroporous adsorbent resin were opti-mized to obtain punicalagin with higher purity. Punicalagin was further separated and purified by using a reverse phase MCI GEL CHP20P column. Results:HPD500 resin showed the best ability to absorb and separate punicalagin in among five kinds of macro-porous adsorbent resins. The best technical parameters were as follows:the mass concentration of sample solution was 15 mg·ml-1 , the loading amount was 2BV, the pH was 2 and the eluting solvent was 8BV of 30% ethanol. With the best process as described a-bove, the content of punicalagin extracted from pomegranate peel increased from 10. 3% to 30. 7%. The obtained punicalagin could be further purified to 61. 3% from 30% in ethanol eluate by the reverse phase MCI GEL CHP20P column. Conclusion:HPD500 resin is the most effective in the purification of punicalagin from pomegranate peel, and the content of punicalagin can be dramatically increased after the purification by a reverse phase MCI GEL CHP20P column. The optimized process shows good reproducibility and stability.
8.Role and significance of PANP in laparoscopic surgery for low rectal cancer
dong Lian SHEN ; hai Wen QI ; cai Guang CAO ; ling Xin ZONG
Chinese Journal of Current Advances in General Surgery 2017;20(8):639-641,672
Objective:To investigate the clinical significance of preserving autonomic nerve (PANP) in patients with low rectal cancer.Methods:The clinical data of 68 cases of patients with low rectal cancer who underwent laparoscopic surgery in our hospital from March 2014 to January 2016 were retrospectively analyzed.According to the surgical methods,the patients were divided into PANP group and non PANP group.Two groups of patients with postoperative micturition function,sexual function and quality of life were observed,compared with the two groups of patients with postoperative satisfaction differences.Results:In retention of PANP group of patients with postoperative ultrasonic residual urine volume was lower than that in non retention in PANP group were less and recovery of automatic micturition time is short retention in PANP group,IPSS score was lower than that in non low retention in PANP group,the difference is statistically significant(P<0.05);The female and male patients with retention of PANP group were better than those of non retention PANP group,and the difference was statistically significant (P<0.05);There was no significant difference in quality of life between the two groups before surgery.After surgery,the quality of life of the two groups was lower than before treatment,and the decrease of PANP group was more obvious than that of the non retention group (P<0.05).Conclusions:The autonomic nerve preservation in the operation of low rectal cancer has a good protective effect on the urinary function and sexual function,and can obviously improve the quality of life of patients after operation.
9.Value of Brain Natriuretic Peptide for the Diagnosis and Treatment of Chronic Left Heart Failure and Cor Pulmonale
Lina LOU ; Lian CHEN ; Jingyuan SHEN ; Lin CAO ; Qi NI ; Fang CHEN
Chinese Journal of Clinical Medicine 2015;(2):186-188
Objective:To investigate the variation of plasma braln natriuretic peptide(BNP) and its value for diagnosis and treatment in patients with hypertension accompanied by chronic left heart fallure or chronic obstructive pulmonary disease (COPD) accompanied by cor pulmonale(CP) .Methods:A total of 36 patients with hypertension accompanied by chronic left heart fallure and 34 patients with COPD accompanied by CP ,who were admitted to Shanghal Second People’s Hospital from Nov 2010 to Nov 2013 ,were enrolled as study subjects .Meanwhile ,30 normal control were enrolled .Quantitative detection of plasma BNP level was done in each group before and after the treatment .Results:The levels of plasma BNP in the hypertension accompanied by chronic left heart fallure group and the COPD accompanied by CP group before the treatment were higher than that in the control group(P<0 .05) .The levels of plasma BNP in the hypertension accompanied by chronic left heart fallure group was higher than that in the COPD accompanied by CP group before the treatment(P< 0 .05) .After the treatment ,the levels of plasma BNP in both the hypertension accompanied by chronic left heart fallure group and the COPD accompanied by CP group decreased (P<0 .05) .The level of plasma BNP in the hypertension accompanied by chronic left heart fallure group was higher than that in the COPD accompanied by CP group after the treatment(P<0 .05) .Conclusions:BNP can be used as the index for differential diagnosis and therapeutic effect assessment of CP and chronic left heart fallure .
10.Preparation and sustained-release property of prednisolone implantable films
Qiang LI ; Yanyu LIN ; Peng QI ; Jiazuo SHEN ; Lin LI ; Kejian LIAN
Chinese Journal of Tissue Engineering Research 2014;(39):6342-6347
BACKGROUND:In recent years, the use of prednisolone has good achievements in functional recovery after peripheral nerve injury, but its short half-life, instable plasma concentrations and greater adverse reactions limit its clinical application. OBJECTIVE:To prepare prednisolone implantable films and to explore the sustained-release property of prednisolone implantable films. METHODS:Novel reverse micellar emulsion-solvent evaporation method was used to prepare nanoparticles which contains prednisolone, and we investigated the properties of prednisolone-loaded nanoparticles, including morphological form, diameter, drug loading, encapsulation efficiency, in vitro release properties. Then, composite film was prepared with the nanoparticles above and col agen, chitosan, soybean phosphatidylcholine. The properties of composite films, such as morphological form, the interaction among film materials, in vitro releasing curve, were investigated. RESULTS AND CONCLUSION:The prednisolone-loaded nanoparticles displayed favorable microstructure such as smooth surface, consistent diameters. The mean diameter of the nanoparticle was 500 nm and the max encapsulation efficiency of the nanoparticle was more than 90%. The nanoparticle displayed obvious sustained-release effect in vitro, but it exhibited a certain burst release phenomenon. We found that the nanoparticles were uniformly distributed inside and on the surface of the composite film;and the in vitro release rate of the film was slower and more stable than the nanoparticles. The composite film displayed favorable sustained-release effect with no burst release. From what we have il ustrated above, we can safely come to a conclusion that the prednisolone-loaded film possesses good sustained-release effects.

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