1.Methodology for the Development of Clinical Practice Guidelines for Chinese Patent Medicine(Part 5): Retrieval and Synthesis of Key Information on Rational Drug Use
Ziteng HU ; Ning LIANG ; Lijiao YAN ; Yujing ZHANG ; Fuqiang ZHANG ; Yaxin CHEN ; Bin LIU ; Qianzi CHE ; Yixiang LI ; Jing GUO ; Nannan SHI ; Yanping WANG
Journal of Traditional Chinese Medicine 2024;65(2):167-171
Recommendations for Chinese patent medicine (CPM) based on key information on rational drug use are one of the important conditions for enhancing guideline enforceability as well as facilitating guideline implementation. In this study, we discussed in detail of the key information on the rational use of CPM in five aspects, which are dosage, drug discontinuation, drug-drug and drug-food interactions, safety and economy. Following the process of multi-source search, synthesis and prioritization, it is suggested to collect key information on the rational use of CPM from a multi-source search of drug instructions, policy documents, literature, and clinical experts' experiences. Then the searched information should be summarized and prioritized with the principle that taking drug instructions as the basis and other-sources information for check and supplementation. Finally, methodological recommendations for the retrieval and synthesis of key information on rational drug use in guideline recommendations has been formed.
2.Based on the correlation between "yang transforming qi,yin shaping up the body" and epicardial adipose tissue,discussing the prevention and treatment strategies of atrial fibrillation by traditional Chinese medicine
Jin LIU ; Qingyong HE ; Gaocan REN ; Yixiang LI
Journal of Beijing University of Traditional Chinese Medicine 2024;47(8):1131-1138
Epicardial adipose tissue (EAT) is a fat reservoir close to the myocardium and visceral pericardium. It has special anatomical and physiological characteristics. The volume and deposition site of EAT are closely related to the occurrence and development of atrial fibrillation (AF). This article discusses the connotation of the traditional Chinese medicine theory," yang transforming qi and yin shaping up the body",and holds that the essence of abnormal accumulation of EAT is "yang transforming qi deficiency and yin constituting form too much". Yin pathogen gradually accumulates,local yin and yang imbalance occurs,and abnormal secretion occurs. With the extension of time,the intrinsic yang heat is accompanied and becomes increasingly exuberant. Finally,yin is difficult to control yang,resulting in EAT infiltrating normal tissues,inducing and promoting the occurrence and progression of AF. Under the guidance of this theory,when distinguishing the amount of yin and yang between the body and EAT,considering the ability of "yang transforming qi" and "yin constituting form" in the whole and part,the method of supporting yang and eliminating yin should be reasonably selected. At the beginning of the disease,it is mainly to restore "yang transforming qi". By avoiding the accumulation of evil from the yin,it dissipates the body of the yin that has become. When the disease progresses,it is necessary to " eliminate pathogenic factor",supplemented by different treatment methods such as eliminating dampness,activating qi,and promoting blood circulation. Furthermore,the whole course of the disease should take care of the patient's deficiency,pay attention to strengthening yang and tonifying the healthy qi,and eliminate yin and evil promptly to improve clinical efficacy.
3.Trilogy of drug repurposing for developing cancer and chemotherapy-induced heart failure co-therapy agent.
Xin CHEN ; Xianggang MU ; Lele DING ; Xi WANG ; Fei MAO ; Jinlian WEI ; Qian LIU ; Yixiang XU ; Shuaishuai NI ; Lijun JIA ; Jian LI
Acta Pharmaceutica Sinica B 2024;14(2):729-750
Chemotherapy-induced complications, particularly lethal cardiovascular diseases, pose significant challenges for cancer survivors. The intertwined adverse effects, brought by cancer and its complication, further complicate anticancer therapy and lead to diminished clinical outcomes. Simple supplementation of cardioprotective agents falls short in addressing these challenges. Developing bi-functional co-therapy agents provided another potential solution to consolidate the chemotherapy and reduce cardiac events simultaneously. Drug repurposing was naturally endowed with co-therapeutic potential of two indications, implying a unique chance in the development of bi-functional agents. Herein, we further proposed a novel "trilogy of drug repurposing" strategy that comprises function-based, target-focused, and scaffold-driven repurposing approaches, aiming to systematically elucidate the advantages of repurposed drugs in rationally developing bi-functional agent. Through function-based repurposing, a cardioprotective agent, carvedilol (CAR), was identified as a potential neddylation inhibitor to suppress lung cancer growth. Employing target-focused SAR studies and scaffold-driven drug design, we synthesized 44 CAR derivatives to achieve a balance between anticancer and cardioprotection. Remarkably, optimal derivative 43 displayed promising bi-functional effects, especially in various self-established heart failure mice models with and without tumor-bearing. Collectively, the present study validated the practicability of the "trilogy of drug repurposing" strategy in the development of bi-functional co-therapy agents.
4.Methods and Challenges for Identifying and Controlling Confounding Factors in Traditional Chinese Medicine Observational Studies
Guozhen ZHAO ; Ziheng GAO ; Chen ZHAO ; Huizhen LI ; Ning LIANG ; Bin LIU ; Qianzi CHE ; Haili ZHANG ; Yixiang LI ; Feng ZHOU ; He LI ; Bo LI ; Nannan SHI
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(22):120-126
As a supplement to randomized controlled trials, observational studies can provide evidence for the effectiveness of traditional Chinese medicine (TCM) treatment measures. They can also study influencing factors of diseases, etiology, and prognosis. However, there is a confounding effect due to the lack of randomization, which seriously affects the causal inference between the study factors and the outcome, resulting in confounding bias. Therefore, identifying and controlling confounding factors are key issues to be addressed in TCM observational studies. According to the causal network and the characteristics of TCM theory, confounding factors can be categorized into measured and unmeasured confounding factors. In addition, attention must be paid to identifying confounding factors and intermediate variables, as well as the interaction between confounding factors and study factors. For methods of controlling confounding factors, measured confounding factors can be controlled by stratification, multifactor analysis, propensity scores, and disease risk scores. Unmeasured and unknown confounding factors can be corrected using instrumental variable methods, difference-in-difference methods, and correction for underlying event rate ratios. Correcting and controlling confounding factors can ensure a balance between groups, and confounding bias can be reduced. In addition, methods such as sensitivity analysis and determination of interactions make the control of confounding factors more comprehensive. Due to the unique characteristics of TCM, observational studies of TCM face unique challenges in identifying and controlling confounding factors, including the ever-changing TCM treatment measures received by patients, the often-overlooked confounding effects in the four diagnostic information of TCM, and the lack of objective criteria for TCM evidence-based diagnosis. Some scholars have already conducted innovative explorations to address these issues, providing a methodological basis for conducting higher-quality TCM observational studies, so as to obtain more rigorous real-world evidence of TCM and gradually develop quality evaluation criteria for OS that are consistent with the characteristics of TCM.
5.Effects of Electroacupuncture at "Fengchi" (GB 20), "Yanglingquan" (GB 34) and "Waiguan" (TE 5) on PPARγ/NF-κB Signalling Pathway in Trigeminal Vascular System in Acute Migraine Model Rats
Zhuozhong HE ; Lei TAN ; Yixiang ZENG ; Shengli ZHOU ; Haojia WEN ; Yang YANG ; Runze TU ; Wei'ai LIU ; Ke HE ; Lei FU
Journal of Traditional Chinese Medicine 2024;65(23):2468-2475
ObjectiveTo investigate the possible mechanism of electroacupuncture at Fengchi (GB 20), Yanglingquan (GB 34) and Waiguan (TE 5) for acute migraine attacks by peroxisome proliferator-activated receptor γ/ nuclear transcription factor-κB pathway in the trigeminal neurovascular system. MethodsForty SD rats were randomly divided into blank group, model group, electroacupuncture group, electroacupuncture plus inhibitor group, and agonist group, 8 rats in each group. Except for the blank group, rats were injected with inflammation decoction intracranial catheter to establish rat models of acute migraine. Thirty minutes after modelling, the electroacupuncture group was given 0.9% NaCl solution by intraperitoneal injection and then electroacupuncture at "Fengchi" (GB 20), "Yanglingquan" (GB 34), and "Waiguan" (TE 5) for 30 mins; the electroacupuncture plus inhibitor group was given PPARγ inhibitor T0070907 (1.5 mg/kg) and eclectroacupuncture as the above for 30 mins; the agonist group was given PPARγ inhibitor pioglitazone hydrochloride (10 mg/kg) for 30 mins. Rats in the blank group and the model group were injected intraperitoneally with 0.9% NaCl solution and then bound and restrained for 30 mins. Behavioural scores were evaluated before modelling, 30 mins after modelling (pre-intervention) and post-intervention; after the last behavioural test, PPARγ, NF-κB p65 mRNA content in rat dura mater was detected by real-time fluorescence quantitative PCR; protein expression of PPARγ, NF-κB p65, interleukin 6 (IL-6), tumour necrosis factor α (TNF-α) in spinal trigeminal nucleus of rats was detected by protein blotting; immunofluorescence double-labelling method was used to detect the fluorescence intensity of PPARγ, NF-κB p65 in spinal trigeminal nucleus of rats. ResultsCompared with the blank group at the same time, the behavioural scores of rats in the remaining groups increased after modelling and after intervention (P<0.01). Compared with the model group at the same time, the beha-vioural scores of rats in the electroacupuncture group, electroacupuncture plus inhibitor group, and agonist group decreased after the intervention (P<0.01). Compared with the electroacupuncture group at the same time, beha-vioural scores reduced in the agonist group and elevated in the electroacupuncture plus inhibitor group after intervention (P<0.01). Compared with the blank group, expression of PPARγ and NF-κB p65 mRNA elevated in the dura mater of rats in the model group, and expression of PPARγ, NF-κB p65, IL-6, and TNF-α protein enhanced in spinal trigeminal nucleus, and the fluorescence intensity of PPARγ and NF-κB p65 enhanced (P<0.01). Compared with the model group, PPARγ mRNA expression in dura mater elevated and NF-κB p65 mRNA expression reduced in each intervention group, PPARγ protein expression in spinal trigeminal nucleus enhanced, and NF-κB p65, IL-6, and TNF-α protein expression weakened; in the electroacupuncture group and the agonist group, PPARγ fluorescence intensity enhanced, and the fluorescence intensity of NF-κB p65 weakened in each intervention group (P<0.05 or P<0.01). Compared with the electroacupuncture group, in the electroacupuncture plus inhibitor group, PPARγ mRNA, protein expression and fluorescence intensity reduced, NF-κB p65 mRNA, protein expression and fluorescence intensity elevated, and IL-6 and TNF-α protein expression enhanced; in the agonist group, PPARγ mRNA and protein expression elevated, NF-κB p65 mRNA and protein expression reduced, and IL-6 and TNF-α protein expression decreased (P<0.05 or P<0.01). ConclusionElectroacupuncture at "Fengchi" (GB 20), "Yanglingquan" (GB 34) and "Waiguan" (TE 5) can can reduce the symptoms of acute migraine attacks in rats, and its mechanism may be related to the up-regulation of PPARγ expression and the reduction of NF-κB expression, thus inhibiting the neurogenic inflammatory response.
6.Advances in drug therapy of diabetic retinopathy
Minghao CHEN ; Peiyu LIU ; Xuan WANG ; Yixiang WU ; Yujin JIANG ; Chaoyang ZHANG ; Jingfa ZHANG
Journal of Shanghai Jiaotong University(Medical Science) 2024;44(7):822-829
Diabetic retinopathy(DR)is one of the most common microvascular complications of diabetes and has become one of the leading causes of blindness and visual impairment in diabetes patients.The pathogenesis of DR is multifaceted,involving inflammation,oxidative stress,neurovascular abnormalities,and other factors that present potential targets for disease management interventions.Currently,anti-vascular endothelial growth factor(VEGF)drugs serve as the primary treatment for advanced stages of DR when irreversible neurovascular damage and visual impairment have occurred.Additionally,some patients show poor or no response to anti-VEGF treatment.There is a lack of early intervention options for the initial phases of the disease.Therefore,there is an urgent need to develop novel local or systemic therapies based on the underlying mechanisms of DR to enable early prevention and treatment with the aim of preserving patients' vision.Medications targeting various pathways including anti-inflammatory agents(corticosteroids and nonsteroidal anti-inflammatory drugs),neurotrophic and neuroprotective drugs,drugs modulating biochemical pathways,antioxidant phytochemicals,and gene therapy can complement each other in terms of therapeutic effects to benefit a larger number of individuals affected by DR.This article reviews previous research reports on the pathogenesis,drug treatment methods,and potential therapeutic targets associated with DR in order to provide guidance for clinical practice.
7.Relationship between clopidogrel resistance and genetic variability in Kawasaki disease children with coronary artery lesions
Yinyin CAO ; Qiyang PAN ; Jian LI ; Xiaofang ZHONG ; Xuecun LIANG ; Lan HE ; Chen CHU ; Quming ZHAO ; Lu ZHAO ; Feng WANG ; Shuna SUN ; Yixiang LIN ; Guoying HUANG ; Fang LIU
Chinese Journal of Pediatrics 2024;62(10):981-988
Objective:To analyze the distribution of clopidogrel metabolism-related gene variability in Kawasaki disease (KD) children with coronary artery lesions (CAL) across different age groups and the impact of genetic variability on the efficacy of clopidogrel antiplatelet therapy.Methods:A retrospective cohort study was conducted. Clinical data were collected from 46 KD children with CAL who were hospitalized in the Cardiovascular Center of Children′s Hospital of Fudan University between January 2021 and August 2022 and were treated with clopidogrel, including gender, age, body mass index, course of KD, CAL severity grade, and baseline platelet count. According to their age, the children were divided into ≥2-year-old group and <2-year-old group. Their platelet responsiveness was assessed by adenosine diphosphate-induced platelet inhibition rate (ADPi) calculated via thromboelastography, and children were categorized into high on-treatment platelet reactivity (HTPR) and normal on-treatment platelet reactivity (NTPR) groups. Genotypes of CYP2C19, PON1 and ABCB1 were detected. The t test, one-way analysis of variance and Chi-square test were used for intergroup comparison. Results:Among the 46 KD children with CAL, 34 were male and 12 were female; 37 were ≥2-year-old and 9 were <2-year-old; 25 cases were in the HTPR group and 21 cases were in the NTPR group, with 19 HTPR and 18 NTPR in the ≥2-year-old group, and 6 HTPR and 3 NTPR in the <2-year-old group. Genetic analysis showed that 92 alleles among the 46 children, with frequencies of CYP2C19*1, CYP2C19*2, CYP2C19*3, CYP2C19*17, PON1 192Q, PON1 192R, ABCB1 3435C, ABCB1 3435T at 59% (54/92), 32% (29/92), 9% (8/92), 1% (1/92), 36% (36/92), 64% (59/92), 63% (58/92) and 37% (34/92), respectively. Analysis of the impact of genotype on ADPi revealed that in children aged ≥2 years, those with CYP2C19*1/*3 genotype had significantly lower ADPi than those with CYP2C19*1/*1 genotype ((34±15)% vs. (61±29)%, t=2.18, P=0.036). There were also no significant difference in ADPi among children with PON1 192Q homozygous, PON1 192R heterozygote and PON1 192R homozygous genotypes ((40±22)% vs. (52±33)% vs. (65±27)%, F=2.17, P=0.130), or among those with ABCB1 3435C homozygous, ABCB1 3435T heterozygote and ABCB1 3435T homozygous genotypes ((55±34)% vs. (60±27)% vs. (49±24)%, F=0.33, P=0.719). In <2-year-old group, there were no significant differences in ADPi across CYP2C19*1/*1, CYP2C19*1/*2 and CYP2C19*2*2 genotypes ((40±20)% vs. (53±37)% vs. (34±16)%, F=0.37, P>0.05). There were no significant differences in ADPi across CYP2C19*1/*1 and CYP2C19*1/*3 genotypes ((44±27)% vs. (42±20)%, t=0.08, P>0.05). There were no significant differences in ADPi across PON1 192Q homozygous, PON1 192R heterozygote and PON1 192R homozygous genotypes (45% vs. (55±27)% vs. (24±5)%, F=1.83, P>0.05). There were no significant differences in ADPi across ABCB1 3435C homozygous, ABCB1 3435T heterozygote and ABCB1 3435T homozygous genotypes ((36±16)% vs. (50±35)% vs. 45%, F=0.29, P>0.05). The risk analysis of HTPR in different genotypes revealed that in children aged ≥2 years, carrying at least 1 or 2 loss-of-function alleles of CYP2C19 was a risk factor for HTPR ( OR=4.69, 10.00, 95% CI 1.11-19.83, 0.84-119.32, P=0.033, 0.046, respectively), and PON1 192R homozygosity and carrying at least one PON1 192R allele were protective factors against HTPR ( OR=0.08, 0.13, 95% CI 0.01-0.86, 0.01-1.19, P=0.019, 0.043, respectively). Conclusion:KD children aged ≥2 years carrying CYP2C19 loss-of-function alleles and PON1 192Q are more likely to develop HTPR.
8.Front-line therapy for brain metastases and non-brain metastases in advanced epidermal growth factor receptor-mutated non-small cell lung cancer: a network meta-analysis.
Yixiang ZHU ; Chengcheng LIU ; Ziyi XU ; Zihua ZOU ; Tongji XIE ; Puyuan XING ; Le WANG ; Junling LI
Chinese Medical Journal 2023;136(21):2551-2561
BACKGROUND:
The brain is a common metastatic site in patients with non-small cell lung cancer (NSCLC), resulting in a relatively poor prognosis. Systemic therapy with epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitors (TKIs) is recommended as the first-line treatment for EGFR -mutated, advanced NSCLC patients. However, intracranial activity varies in different drugs. Thus, brain metastasis (BM) should be considered when choosing the treatment regimens. We conducted this network meta-analysis to explore the optimal first-line therapeutic schedule for advanced EGFR -mutated NSCLC patients with different BM statuses.
METHODS:
Randomized controlled trials focusing on EGFR-TKIs (alone or in combination) in advanced and EGFR -mutant NSCLC patients, who have not received systematic treatment, were systematically searched up to December 2021. We extracted and analyzed progression-free survival (PFS) and overall survival (OS). A network meta-analysis was performed with the Bayesian statistical model to determine the survival outcomes of all included therapy regimens using the R software. Hazard ratios (HRs) and 95% confidence intervals (CIs) were used to compare intervention measures, and overall rankings of therapies were estimated under the Bayesian framework.
RESULTS:
This analysis included 17 RCTs with 5077 patients and 12 therapies, including osimertinib + bevacizumab, aumolertinib, osimertinib, afatinib, dacomitinib, standards of care (SoC, including gefitinib, erlotinib, or icotinib), SoC + apatinib, SoC + bevacizumab, SoC + ramucirumab, SoC + pemetrexed based chemotherapy (PbCT), PbCT, and pemetrexed free chemotherapy (PfCT). For patients with BM, SoC + PbCT improved PFS compared with SoC (HR = 0.40, 95% CI: 0.17-0.95), and osimertinib + bevacizumab was most likely to rank first in PFS, with a cumulative probability of 34.5%, followed by aumolertinib, with a cumulative probability of 28.3%. For patients without BM, osimertinib + bevacizumab, osimertinib, aumolertinib, SoC + PbCT, dacomitinib, SoC + ramucirumab, SoC + bevacizumab, and afatinib showed superior efficacy compared with SoC (HR = 0.43, 95% CI: 0.20-0.90; HR = 0.46, 95% CI: 0.31-0.68; HR = 0.51, 95% CI: 0.34-0.77; HR = 0.50, 95% CI: 0.38-0.66; HR = 0.62, 95% CI: 0.43-0.89; HR = 0.64, 95% CI: 0.44-0.94; HR = 0.61, 95% CI: 0.48-0.76; HR = 0.71, 95% CI: 0.50-1.00), PbCT (HR = 0.29, 95% CI: 0.11-0.74; HR = 0.31, 95% CI: 0.15-0.62; HR = 0.34, 95% CI: 0.17-0.69; HR = 0.34, 95% CI: 0.18-0.64; HR = 0.42, 95% CI: 0.21-0.82; HR = 0.43, 95% CI: 0.22-0.87; HR = 0.41, 95% CI: 0.22-0.74; HR = 0.48, 95% CI: 0.31-0.75), and PfCT (HR = 0.14, 95% CI: 0.06-0.32; HR = 0.15, 95% CI: 0.09-0.26; HR = 0.17, 95% CI: 0.09-0.29; HR = 0.16, 95% CI: 0.10-0.26; HR = 0.20, 95% CI: 0.12-0.35; HR = 0.21, 95% CI: 0.12-0.39; HR = 0.20, 95% CI: 0.12-0.31; HR = 0.23, 95% CI: 0.16-0.34) in terms of PFS. And, SoC + apatinib showed relatively superior PFS when compared with PbCT (HR = 0.44, 95% CI: 0.22-0.92) and PfCT (HR = 0.21, 95% CI: 0.12-0.39), but similar PFS to SoC (HR = 0.65, 95% CI: 0.42-1.03). No statistical differences were observed for PFS in patients without BM between PbCT and SoC (HR = 1.49, 95% CI: 0.84-2.64), but both showed favorable PFS when compared with PfCT (PfCT vs. SoC, HR = 3.09, 95% CI: 2.06-4.55; PbCT vs. PfCT, HR = 0.14, 95% CI: 0.06-0.32). For patients without BM, osimertinib + bevacizumab was most likely to rank the first, with cumulative probabilities of 47.1%. For OS, SoC + PbCT was most likely to rank first in patients with and without BM, with cumulative probabilities of 46.8%, and 37.3%, respectively.
CONCLUSION
Osimertinib + bevacizumab is most likely to rank first in PFS in advanced EGFR -mutated NSCLC patients with or without BM, and SoC + PbCT is most likely to rank first in OS.
Humans
;
Carcinoma, Non-Small-Cell Lung/metabolism*
;
Afatinib/therapeutic use*
;
Lung Neoplasms/metabolism*
;
Bevacizumab/therapeutic use*
;
Bayes Theorem
;
Network Meta-Analysis
;
Protein Kinase Inhibitors/therapeutic use*
;
Pemetrexed/therapeutic use*
;
ErbB Receptors/genetics*
;
Brain Neoplasms/genetics*
;
Mutation/genetics*
9.Mutation characteristics of ethambutol resistance gene of Mycobacterium tuberculosis in Guangxi
Gang LIU ; Rushu LAN ; Huifang QIN ; Xiaoling QIN ; Yixiang QIN ; Ruolan XU ; Dan LUO
The Journal of Practical Medicine 2023;39(24):3261-3266
Objective To investigate the mutation characteristics and influencing factors of ethambutol(EMB)resistance gene of Mycobacterium tuberculosis in Guangxi Zhuang Autonomous region,and to provide evidence for molecular diagnosis and clinical treatment of tuberculosis.Methods A total of 655 strains of Myco-bacterium tuberculosis(52 ethambutol resistant strains and 603 ethambutol sensitive strains)were collected continuously from 30 TB drug resistance monitoring sites in Guangxi in 2018-2019,and the mutation characteristics and influencing factors of ethambutol resistant genes were analyzed by whole genome sequencing.Results Among 655 strains of Mycobacterium tuberculosis,54 strains had ethambutol drug resistance gene mutation,the mutation rate was 8.24%(54/655).Among 52 EMB-resistant strains detected by proportional method,21 had gene mutation,the mutation rate was 40.38%(21/52),and 33 of 603 EMB-sensitive strains had gene mutation,the mutation rate was 5.47%(33/603).The gene mutation rate in drug-resistant strains was higher than that in sensitive strains(χ2 = 77.133,P = 0.000).The coincidence rate of EMB drug resistance phenotype and gene mutation was 40.38%(21/52),and the results of the two tests were not highly consistent(Kappa = 0.343,P<0.001).The mutant genes of 54 strains were embA,embB and embC,and there were 20 mutant forms,among which 29 were mutated at unit point,accounting for 53.70%(29/54),and 25 were mutated at joint site,accounting for 46.30%(25/54).Among the unit point mutations,embB306(35.19%)had the highest mutation proportion,followed by embB497(5.56%)and embB406(3.70%).Among the joint site mutations,embC270+embB378 had the highest mutation proportion(22.22%),The second was embB306+embA-12(3.70%).Gender,anti-tuberculosis treatment history,genotype and MDR might be related to EMB gene mutation(χ2 = 9.388,P = 0.004;χ2 = 27.084,P = 0.000;χ2 = 6.671,P = 0.010;χ2 = 68.826,P = 0.000).Multivariate logistic regression analysis showed that male(OR = 6.150),retreatment(OR = 2.636)and multidrug resistance(OR = 7.333)may be risk factors for EMB resistance gene mutation,and Beijing genotype may be a protective factor for EMB resistance gene mutation(OR = 0.511).Conclusion EMB resistance of Mycobacterium tuberculosis is related to embA,embB and embC gene mutations,and the incidence of EMB resistance phenotype is not high.For male,retreatable,MDR-resistant,and non-Beijing genotype TB patients,attention should be paid to the mutation of the EMB resistance gene.
10.Effect of changes in body mass index on left heart function in early breast cancer patients undergoing anthracycline chemotherapy
Yahui MA ; Yiqi ZHANG ; Yixiang LIU ; Li LYU ; Dongliang LIU
Cancer Research and Clinic 2022;34(10):741-745
Objective:To explore the effect of changes in BMI (ΔBMI) on left ventricular function in early breast cancer patients undergoing anthracycline chemotherapy.Methods:The clinical data of 170 breast cancer patients treated in the Lianyungang Oriental Hospital from January 2018 to October 2021 were retrospectively analyzed. The clinicopathological data and cardiac color doppler ultrasound examination results of the patients were collected. Single-factor and multiple-factor were used to analyze the risk factors of cardiotoxicity in patients after chemotherapy. ΔBMI was calculated and the receiver operating characteristic (ROC) curve was drawn; the cut-off value of the ΔBMI was measured to obtain the diagnostic accuracy.Results:Compared with before chemotherapy, the mean values of BMI, left ventricular end-diastolic volume (EDV), left ventricular end-systolic volume (ESV), left ventricular end-diastolic diameter (LVD), and left ventricular end-systolic diameter (LVS) were increased after chemotherapy, while left ventricular ejection fraction (LVEF) value was decreased. Before and after chemotherapy, the differences between BMI [(22.30±1.88) kg/m 2 vs. (23.59±2.32) kg/m 2] and LVEF [(63.69±4.69)% vs. (59.08±4.28)%] were statistically significant ( t = 3.40 and 4.98, all P < 0.05). The range of ΔBMI was 0-41.3%, and the range of the change of LVEF (ΔLVEF) was 0-15.9%. There was a significant correlation between ΔLVEF and ΔBMI ( r = 0.709, P < 0.001). The incidence of cardiotoxicity was 21.2% (36/170). Logistic regression analysis showed that BMI( OR = 1.639, 95% CI 1.263-2.127, P = 0.000) and ΔBMI ( OR = 1.147, 95% CI 1.071-1.228, P = 0.000) were independent risk factors for cardiotoxicity in early breast cancer patients undergoing anthracycline chemotherapy. According to the cardiotoxicity, the area under the ROC curve of ΔBMI and BMI was 0.757 and 0.687, respectively. When the ΔBMI value was 4.28%, the maximum Youden index was 0.399, the sensitivity was 0.750, and the specificity was 0.649. Conclusion:For breast cancer patients treated with anthracycline chemotherapy, ΔBMI can be used as an effective indicator for predicting cardiotoxicity; when ΔBMI exceeds 4.28%, the risk of cardiotoxicity is high.

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