1.Further Recognization of Disease Name in Traditional Chinese Medicine for Knee Osteoarthritis Based on Micropathologic Phenotypes
Hongfei WU ; Yushi CUI ; Yun GAO ; Shuai ZHANG ; Mingyuan WANG ; Xingping ZHANG ; Zhilong ZHANG
Journal of Traditional Chinese Medicine 2025;66(11):1089-1093
		                        		
		                        			
		                        			This paper interprets the disease name related to bi (痹) disease in traditional Chinese medicine (TCM) from the perspective of micropathological phenotypes in knee osteoarthritis (KOA). By systematically reviewing classical TCM literature on the pathogenesis and clinical features of different subtypes such as damp-retention bi, bone bi, and tendon bi, and integrating these with current research on pathological subtypes of KOA including the synovitis type, cartilage-meniscus type, and subchondral bone type, the study explores the correlation between traditional disease terms and modern micropathological phenotypes. The author proposes subtype classifications of damp-retention bi corresponding to synovial inflammation, bone bi related to abnormal subchondral bone remodeling, and tendon bi representing cartilage and meniscus degeneration. This approach provides a microscopic biological explanation for TCM syndrome differentiation and offers new perspectives for advancing integrative diagnostic and therapeutic strategies in both Chinese and western medicine. 
		                        		
		                        		
		                        		
		                        	
2.Differentiation and Treatment of Co-morbidity of Osteoporosis and Knee Osteoarthritis based on the Concept of "Wei (痿) and Bi (痹) Unity"
Yushi CUI ; Hongfei WU ; Yun GAO ; Runmin LAI ; Xingping ZHANG ; Shuai ZHANG ; Mingyuan WANG ; Yamin LI
Journal of Traditional Chinese Medicine 2024;65(15):1565-1570
		                        		
		                        			
		                        			Osteoporosis and knee osteoarthritis often co-occur and are closely related in terms of epidemiology, clinical symptoms, pathogenesis and other aspects. Therefore, it is necessary to manage the co-morbidity and treat the two as a whole. Based on the overall relationship between wei (痿) and bi (痹) in TCM, it is believed that osteoporosis and knee osteoarthritis have marrow loss and bone atrophy as the core pathogenesis of co-morbidity, and microfractures as the central pathological link. The overall treatment is rooted in boosting kidney, supplementing marrow and strengthening the bones. According to the pathological manifestations of microfractures in the process of co-morbidity, and the different deficiency and excess characteristics of wei and bi, it can be divided into three types, "wei emerging with mild bi", "wei and bi progressing simultaneously", and "emphasis on both wei and bi", for treatment. In terms of "wei emerging with mild bi", that is the early stage of osteoporosis, the traditional Daoyin (导引) is the main therapy. For "wei and bi progressing simultaneously", it can be divided into three stages further, including the onset stage, remission stage, and recovery stage of knee pain, treated with Taohong Siwu Decoction (桃红四物汤), Bushen Huoxue Formula (补肾活血方) and self-made Bushen Qianggu Formula (补肾强骨方) as the main formula respectively. For "emphasis on both wei and bi", the proven formula, Qianggu Zhitong Formula (强骨止痛方), is taken as the main prescription. 
		                        		
		                        		
		                        		
		                        	
3.Influence of Guizhi Jia Longgu Mulitang on Expression of IL-10 and TNF-α in Insomnia Rats with Sensory Dysfunction Dominated by Lung
Jinhong WU ; Xingping ZHANG ; Deqi YAN ; Ruining LIANG ; Xu CHEN ; Zhengting LIANG ; Honglin JIA ; Hui WANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(13):20-27
		                        		
		                        			
		                        			ObjectiveTo investigate the effects of Guizhi Jia Longgu Mulitang on the expression difference of interleukin-10 (IL-10) and tumor necrosis factor -α (TNF-α) in related organs of insomnia rats with sensory dysfunction dominated by lung and study the mechanism of Guizhi Jia Longgu Mulitang in improving insomnia. MethodSD rats were randomly divided into the blank group, model group, western medicine group, and traditional Chinese medicine (TCM) group, with 10 rats in each group. The rats were deprived of sleep by shallow water environment method in a long platform, and the modeling lasted for 42 d. The blank group and model group were given 0.05 mL·kg-1 normal saline by gavage, and the western medicine group and TCM group were given drugs during modeling. To be specific, the western medicine group was given 0.105 mg·kg-1 dexzopiclone tablet by gavage, while the TCM group was given 7 600 mg·kg-1 Guizhi Jia Longgu Mulitang by gavage, both lasting for 28 days. After successful modeling, the Morris water maze experiment was performed on the 42nd day to detect the motion and spatial memory ability of rats. The levels of IL-10 and TNF-α in serum were detected by enzyme-linked immunosorbent assay (ELISA). The protein expression of IL-10 and TNF-α in the lung and brain tissue of rats was detected by Western blot. The levels of IL-10 and TNF-α in the lung and brain tissue of rats were detected by immunohistochemistry. ResultCompared with the blank group, the sleep stages non-rapid eye movement ( NREM ) and rapid eye movement ( REM ) of the model group were significantly shortened (P<0.5, P<0.01), and the wake stage was significantly increased (P<0.01). The total time and distance of platform exploration were significantly increased (P<0.01). In the target quadrant (the third quadrant), the percentage of exploration time and the times of crossing the platform were significantly decreased (P<0.01). ELISA results showed that the serum IL-10 level was significantly decreased (P<0.01), and TNF-α level was significantly increased (P<0.01). The results of Western blot showed that the protein expression of IL-10 in brain and lung tissue of rats was significantly decreased (P<0.01), and the protein expression of TNF-α was significantly increased (P<0.01). The results of immunohistochemistry showed that the expression of IL-10 in the brain and lung tissue of rats was significantly decreased (P<0.01), and that of TNF-α was significantly increased (P<0.01). Compared with the model group, the NREM stage and REM stage of the western medicine group and the TCM group were significantly increased (P<0.5, P<0.01), and the wake stage was shortened (P<0.5). The total time and distance of platform exploration were significantly decreased (P<0.01). In the target quadrant (the third quadrant), the percentage of exploration time and the times of crossing the platform were significantly increased (P<0.05, P<0.01). The serum IL-10 level was significantly increased (P<0.01), and the serum TNF-α level was significantly decreased according to the ELISA results (P<0.01). The results of Western blot showed that the protein expression of IL-10 in brain tissue and lung tissue was significantly increased (P<0.01), and the protein expression of TNF-α was significantly decreased (P<0.01). The results of immunohistochemistry showed that the expression of IL-10 in brain tissue and lung tissue was significantly increased (P<0.05, P<0.01), and the expression of TNF-α was significantly decreased (P<0.05, P<0.01). ConclusionGuizhi Jia Longgu Mulitang can improve the expression of IL-10 and TNF-α in brain and lung tissue of insomnia rats with sensory dysfunction dominated by lung, prolong sleep time, and then improve insomnia. The mechanism may be related to improving the expression level of inflammatory factors. 
		                        		
		                        		
		                        		
		                        	
4.Clinical characteristics of children with severe SARS-CoV-2 infection in Yunnan
Yin LI ; Xiaozhong HU ; Congyun LIU ; Xingping TAO ; Rui WANG ; Rui LU ; Yang LI ; Yan PU ; Canrong MU ; Jianhong XU ; Hongmin FU
Chinese Journal of Pediatrics 2024;62(5):451-456
		                        		
		                        			
		                        			Objective:To investigate the clinical characteristics of 130 children with severe SARS-CoV-2 infection in Yunnan province after the relaxation of non-pharmaceutical interventions, and analyze the risk factors for mortality.Methods:This study is a retrospective case summary that analyzed the demographic data, underlying diseases, clinical diagnoses, disease outcomes, and laboratory results of 130 children with severe COVID-19 infections admitted to nine top-tier hospitals in Yunnan Province from December 2022 to March 2023. According to the prognosis, the patients were divided into survival group and death group. The clinical and laboratory data between the two groups were compared, and the risk factors of death were evaluated. The χ2 test and Mann-Whitney U test were employed to compare between groups, while Spearman correlation test and multiple Logistic regression were used to analyze the risk factors for death. The predictive value of independent risk factors was evaluated by receiver operating characteristic curve. Results:The 130 severe patients included 80 males and 50 females with an onset age of 28.0 (4.5, 79.5) months. There were 97 cases in the survival group and 33 cases in the death group with no significant differences in gender and age between the two groups ( P>0.05). Twenty-five cases (19.2%) out of the 130 patients had underlying diseases, and the number with underlying diseases was significantly higher in death group than in survival group (36.4% (12/33) vs. 13.4%(13/97), χ2=8.36, P=0.004). The vaccination rate in the survival group was significantly higher than that in the death group (86.1% (31/36) vs. 7/17, χ2=9.38, P=0.002). A total of 42 cases (32.3%) of the 130 patients were detected to be infected with other pathogens, but there was no significant difference in the incidence of co-infection between the death group and the survival group (39.3%(13/33) vs. 29.9% (29/97), χ2=1.02, P>0.05). Among the 130 cases, severe respiratory cases were the most common 66 cases (50.8%), followed by neurological severe illnesses 34 cases (26.2%) and circulatory severe 13 cases (10%). Compared to the survival group, patients in the death group had a significantly higher levels of neutrophil, ferritin, procalcitonin, alanine aminotransferase, lactate dehydrogenase, creatine kinase isoenzyme, B-type natriuretic peptide, interleukin-6 and 10 (6.7 (4.0, 14.0) vs. 3.0 (1.6, 7.0)×10 9/L, 479 (298, 594) vs. 268 (124, 424) μg/L, 4.8 (1.7, 10.6) vs. 2.0 (1.1, 3.1) μg/L, 66 (20, 258) vs. 23 (15, 49) U/L, 464 (311, 815) vs. 304 (252, 388) g/L, 71(52, 110) vs. 24(15, 48) U/L, 484 (160, 804) vs. 154 (26, 440) ng/L, 43 (23, 102) vs. 19 (13, 27) ng/L, 216 (114, 318) vs. 86 (45, 128) ng/L, Z=-4.21, -3.67, -3.76, -3.31, -3.75, -5.74, -3.55, -4.65, -5.86, all P<0.05). The correlated indexes were performed by multivariate Logistic regression and the results showed that vaccination was a protective factor from death in severe cases ( OR=0.01, 95% CI 0-0.97, P=0.049) while pediatric sequential organ failure assessment (PSOFA) ( OR=3.31, 95% CI 1.47-7.47, P=0.004), neutrophil-to-lymphocyte ratio (NLR) ( OR=1.56, 95% CI 1.05-2.32, P=0.029) and D dimer ( OR=1.49, 95% CI 1.00-1.02, P=0.033) were independent risk factors for death (all P<0.05). The area under the curve of the three independent risk factors for predicting death were 0.86 (95% CI 0.79-0.94), 0.89 (95% CI 0.84-0.95) and 0.87 (95% CI 0.80-0.94), all P<0.001, and the cut-off values were 4.50, 3.66 and 4.69 mg/L, respectively. Conclusions:Severe SARS-CoV-2 infection can occur in children of all ages, primarily affecting the respiratory system, but can also infect the nervous system, circulatory system or other systems. Children who died had more severe inflammation, tissue damage and coagulation disorders. The elevations of PSOFA, NLR and D dimer were independent risk factors for death in severe children.
		                        		
		                        		
		                        		
		                        	
5.Evaluation of the effect of contrast medium injection in CT enhanced examination of malignant tumor patients with standardized nursing procedure of totally implantable venous power port
Yanli PENG ; Yifan WANG ; Shuli FENG ; Xingping TANG ; Yuanfang LIU ; Yanping LUO ; Xiang ZHANG ; Ming GAO ; Zehong YANG ; Hong DENG
Chinese Journal of Practical Nursing 2024;40(22):1705-1709
		                        		
		                        			
		                        			Objective:To explore the standardization of totally implantable venous power port of nursing process in CT enhancement and application effect of contrast medium injection, so as to provide a safer and more efficient way for contrast medium injection in CT enhanced examination for patients with malignant tumors.Methods:A non-randomized prospective study was conducted, 358 patients with malignant tumors were selected in Sun Yat-sen Memorial Hospital, Sun Yat-sen University who underwent CT enhanced examination from August 1, 2022 to July 31, 2023, 179 patients who had been implanted totally implantable venous power port were selected as the experimental group, and the standardized nursing procedure was given. The other 179 patients were the control group, using radiology routine high-pressure intravenous indwelling needle as the contrast medium access, with routine peripheral venous nursing process. The incidence of contrast medium extravasation during CT enhanced examination was observed and compared between the two groups.Results:All the patients were included. There were 85 males and 94 females, aged (55.50±11.72) years old in the control group. There were 83 males and 96 females, aged (54.50±12.24) years old in the experimental group. The incidence of contrast medium extravasation was 0 in the experimental group and 3.35%(6/179) in the control group. The difference between the two groups was statistically significant (Fisher exact probability, P<0.05). Conclusions:The application of standardized nursing procedure of totally implantable venous power port to the injection of contrast medium in CT enhanced examination of malignant tumor patients, can significantly reduce the incidence of contrast medium extravasation.
		                        		
		                        		
		                        		
		                        	
6.Validation of bacterial endotoxin test for aluminum hydroxide adjuvant by TAL method
Yu PANG ; Mengxue ZHANG ; Zhijing MA ; Fei WANG ; Xuan GUO ; Xingping HAO ; Chengjin SUN
Drug Standards of China 2024;25(4):380-386
		                        		
		                        			
		                        			Objective:To establish a TAL gel-clot bacterial endotoxin test for aluminum hydroxide adjuvant.Methods:According to the bacterial endotoxin test in general chapter 1143 of the Chinese Pharmacopoeia 2020,pre-interference test was performed using 3 types of buffer solutions and Ca-Mg additive by orthogonal design.The interference test and sample preparation validation were carried out using different batches of aluminum hydroxide adjuvant from 2 TAL manufacturers.Results:No interference was obtained through pre-interference test.Under the validated conditions,aluminum hydroxide adjuvant combined with phosphate buffered saline and Ca-Mg additive was employed to remove interference in bacteria endotoxin test.Conclusion:The established TAL gel-clot method is applicable to bacterial endotoxin test for aluminum hydroxide adjuvant.
		                        		
		                        		
		                        		
		                        	
7.Retrospective analysis of 67 cases of neurosyphilis with abnormal mental behaviors as the initial symptom
Juanjuan WANG ; Rong CHEN ; Jiang JI ; Wenxing SU ; Yuqian WEI ; Ying ZHAO ; Xingping YIN ; Yuhua SU ; Xin SHI
Chinese Journal of Dermatology 2022;55(3):231-234
		                        		
		                        			
		                        			Objective:To analyze clinical characteristics of neurosyphilis patients with abnormal mental behaviors as the initial symptom, and to provide a reference for clinical classification of, as well as outcome prediction and efficacy monitoring in neurosyphilis.Methods:Clinical data were collected from 67 HIV-negative neurosyphilis patients with abnormal mental behaviors as the initial symptom in the Second Affiliated Hospital of Soochow University from November 2012 to November 2019, and retrospectively analyzed. Statistical analysis was carried out by using t test. Results:Among the 67 patients, 52 (77.6%) were males, and 15 (22.4%) were females; there were 63 (94.0%) middle-aged and elderly patients and 4 (6.0%) adolescent patients; 38 (56.7%) patients were diagnosed with progressive general paresis, 21 (31.3%) with meningovascular neurosyphilis, 1 (1.5%) with meningeal neurosyphilis, 3 (4.5%) with tabes dorsalis, and 4 (6.0%) with mixed-type neurosyphilis. As laboratory examination showed, 67 patients all presented with positive serum rapid plasma reagin (RPR) test, serum Treponema pallidum particle agglutination (TPPA) test, and cerebrospinal fluid TPPA test, 55 (82.1%) had positive cerebrospinal fluid RPR test, 47 (70.1%) had elevated cerebrospinal fluid protein levels of > 0.45 g/L, 50 (74.6%) had increased white blood cell counts of > 8 ×10 6/L in cerebrospinal fluids, and 28 (41.8%) had elevated IgG levels in cerebrospinal fluids. Magnetic resonance imaging of the brain revealed multiple ischemic foci in 21 (31.3%) cases, multiple leukodystrophy in 17 (25.4%) , cerebral atrophy in 15 (22.4%) , infarction in 8 (11.9%) , and encephalitis-like changes in 2 (3.0%) . Of the 67 patients, 48 were treated with penicillin in aqueous solutions, 15 with ceftriaxone, and 4 with doxycycline. Six months later, the follow-up showed that 46 (68.7%) patients responded to the treatment, and the early course of disease was significantly shorter in the highly responsive group than in the poorly responsive group ( P < 0.05) . Conclusion:The middle-aged and elderly males were predominant in the neurosyphilis patients with abnormal mental behaviors as the initial symptom, magnetic resonance imaging is helpful for clinical classification and prognosis prediction of neurosyphilis, and early and standardized antisyphilitic treatment can markedly improve the prognosis of patients.
		                        		
		                        		
		                        		
		                        	
8.Wang's Yijing Decoction Combined with Conventional Therapy: Performance in Treating Polycystic Ovary Syndrome with Kidney Deficiency and Phlegm-dampness Syndrome and Regulating Effect on Intestine-brain Axis
Zhenzhen CHANG ; Jinquan WANG ; Li QIAO ; Wenjing ZHANG ; Xingping GUO
Chinese Journal of Experimental Traditional Medical Formulae 2022;28(13):145-151
		                        		
		                        			
		                        			ObjectiveTo observe the therapeutic effect of Wang's Yijing decoction combined with conventional therapy on the treatment of polycystic ovary syndrome (PCOS) with kidney deficiency and phlegm-dampness syndrome and its regulating effect on the intestine-brain axis. MethodThe 132 patients from the gynecological clinic of Shanxi Bethune Hospital were randomly assigned into a control group and an observation group, with 66 patients in each group. The patients in the control group were treated with drospirenone and ethinylestradiol tablets and metformin tablets, and those in the observation group were administrated with Wang's Yijing decoction on the basis of the therapy in the control group. The treatment in both groups lasted for 3 menstrual cycles. The changes in menstrual blood volume, color, and texture, as well as that in the menstrual cycle before and after treatment were scored. Further, the Rosenfield, hirsutism, and kidney deficiency and phlegm-dampness syndrome were scored before and after treatment. Pelvic ultrasound was performed before and after treatment to compare the bilateral ovarian volume. The levels of anti-mullerian hormone (AMH), estradiol (E2), luteinizing hormone (LH), follicle-stimulating hormone (FSH), testosterone (T), dihydrotestosterone (DHT), and sex hormone-binding globulin (SHBG) were measured before and after treatment, and the free androgen index (FAI) was calculated. After the fasting insulin and fasting blood glucose were examined before and after treatment, the homeostatic model assessment of insulin resistance (HOMA-IR) was calculated. The levels of ghrelin, glucagon-like peptide-1 (GLP-1), peptide tyrosine-tyrosine (PYY) in serum and short-chain fatty acids (SCFAs) in fresh stool were measured before and after treatment. ResultThe treatments in both groups lowered the scores of irregular menstruation, Rosenfield, hirsutism, and kidney deficiency and phlegm-dampness syndrome (P<0.01), and the scores in the observation group were lower than those in the control group (P<0.01). After treatment, the T, DHT, FAI, AMH, E2, LH, and FSH levels lowered (P<0.01), while the SHBG level elevated (P<0.01). In addition, the AMH, E2, LH, T, DHT, and FAI in the observation group were lower than those in control group, while the SHBG level presented an opposite trend (P<0.01). After treatment, the bilateral ovarian volume and HOMA-IR of the two groups decreased (P<0.01), and were lower in the observation group than in the control group (P<0.05, P<0.01). The treatments in both groups elevated the levels of ghrelin, GLP-1, PYY, and SCFAs (P<0.01), which were higher in the observation group than in the control group (P<0.01). After treatment, the recovery rate in the observation group was 65.57% (40/61), which was higher than 44.83% (26/58) in the control group (χ2=5.180, P<0.05). ConclusionWang's Yijing decoction combined with conventional western medicine treatment can regulate the intestine-brain axis, endocrine and metabolic disorders, and sex hormones, adjust the menstrual cycle, and alleviate clinical symptoms, demonstrating good clinical effect for the PCOS patients with kidney deficiency and phlegm dampness syndrome. 
		                        		
		                        		
		                        		
		                        	
9.Chinese medicine Yangmo decoction ameliorates intrauterine adhesion prognosis following hysteroscopic adhesiolysis.
Xingping ZHAO ; Shuhan HE ; Zhaoling YOU ; Hua WANG ; Dabao XU ; Aiqian ZHANG
Journal of Central South University(Medical Sciences) 2022;47(11):1540-1549
		                        		
		                        			OBJECTIVES:
		                        			Hysteroscopic adhesiolysis (HA) remains the mainstay on treatment for intrauterine adhesions (IUA). The fertility outcome of patients with moderate and severe intrauterine adhesions after HA is still far from satisfactory. Estrogen combined with progesterone is the most common treatment; however, they do not help in improving the fertility rate to the maximum because of the limitations. This retrospective, non-randomized controlled study will assess the effects of traditional Chinese medicine Yangmo decoction after HA in restoration of the endometrium and improvement of the fertility rate.
		                        		
		                        			METHODS:
		                        			A total of 427 patients, who met the inclusion criteria, aged between 20 and 45 years and diagnosed with moderate or severe IUA underwent HA at the Third Xiangya Hospital from January to August 2021, were enrolled for this study. Participants were assigned into 2 groups: A Yangmo decoction group (n=213, patients were given Yangmo decoction consisting of Ginseng flower, Sanchi flower, Daidai flower, Snow lotus, Licorice and so on after HA), and an estrogen and progesterone group (n=214, patients were given estrogen and progesterone after HA). The following basic information was collected retrospectively for both groups, including age, parity, history of abortion, menstrual status, and times of hysteroscopic interventions. American Fertility Society (AFS) score was used by a senior surgeon and the density of opening of endometrial glands was evaluated during HA. The parameters were obtained from three-dimensional transvaginal ultrasound (3D-TVUS) preoperatively and postoperatively, to evaluate the efficacy of Yangmo decoction, estrogen, and progesterone. All patients were followed up on telephone to determine the fertility rate until 6 months from the last HA.
		                        		
		                        			RESULTS:
		                        			Based on the basic information collected preoperatively, there were no significant differences between the groups (all P>0.05). Postoperatively, patients in the Yangmo decoction group had a better surgical success rate with a more significant AFS reduction (P<0.001), better density of opening of endometrial glands in the uterine cavity (P<0.000 1) after HA, and a better fertility rate (40.4%) in the time of 6 months after the last HA than those of the estrogen and progesterone group.
		                        		
		                        			CONCLUSIONS
		                        			Yangmo decoction has better therapeutic efficacy in the treatment of intrauterine adhesion after HA than the combined effect of estrogen and progesterone. Yangmo decoction helps restore the endometrium and improve the fertility rate, therefore, it can be adopted as a routine practice for IUA patients who have fertility requirements.
		                        		
		                        		
		                        		
		                        			Humans
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		                        			Young Adult
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		                        			Adult
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		                        			Middle Aged
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		                        			Retrospective Studies
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		                        			Progesterone/therapeutic use*
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		                        			East Asian People
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		                        			Medicine, Chinese Traditional
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		                        			Estrogens/therapeutic use*
		                        			
		                        		
		                        	
10.Impact of the number of chemotherapy cycle of concurrent chemotherapy during radiotherapy on clinical prognosis of limited-stage small cell lung cancer
Xingping GE ; Hao YU ; Jiaqi ZHANG ; Zhen ZHANG ; Youyou WANG ; Peng WANG ; Liming XU ; Ningbo LIU ; Lujun ZHAO
Chinese Journal of Radiation Oncology 2021;30(7):671-675
		                        		
		                        			
		                        			Objective:To investigate the role of concurrent chemoradiotherapy in the treatment of limited-stage small cell lung cancer (LS-SCLC) and the impact of the number of chemotherapy cycle during radiotherapy (RT) on clinical prognosis.Methods:Patients with LS-SCLC treated with definitive radiotherapy from May, 2008 to September, 2016 were included in the study. The primary endpoint was overall survival (OS), which was calculated from the start of treatment to the date of death or last follow-up. The effect of the number of concurrent chemotherapy cycle and other clinical factors on clinical efficacy was analyzed. Survival analysis was performed with Kaplan- Meier method, and multivariate analysis was performed with Cox regression model. Results:Three hundred and seventeen patients were eligible for the analysis. Among them, 129 patients received sequential chemoradiotherapy and 188 patients received concurrent chemoradiotherapy. Among patients receiving concurrent chemoradiotherapy, 86 patients received 1 cycle of concurrent chemotherapy and 102 cases of 2 cycles of concurrent chemotherapy. The median follow-up time was 22.47 months. Multivariate survival analysis showed that only clinical stage, timing of RT administration and prophylactic cranial irradiation (PCI) were the independent prognostic factor for OS. The median OS in patients who received 1 cycle and 2 cycles of concurrent chemotherapy during RT were 33.8 months and 30.4 months ( P=0.400). No matter in elder patients or in younger patients, in early RT group or in late RT group and application of PCI or not, the number of concurrent chemotherapy cycle exerted no significant impact on OS. The incidence of grade 3 or above adverse events was 20% in the 1-cycle concurrent chemotherapy group, and 13.7% in the 2-cycle concurrent chemotherapy group. Conclusions:Concurrent chemoradiotherapy is the standard treatment of LS-SCLC. Two cycles of concurrent chemotherapy during RT is not necessarily superior to 1 cycle of concurrent chemotherapy. The optimal number of concurrent chemotherapy cycle during RT need to be studied in a large prospective randomized clinical trial.
		                        		
		                        		
		                        		
		                        	
            
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