The primary role of transfer RNA(tRNA)is to connect a specific amino acid to its 3' end, use its anticodon to match the codon on messenger RNA(mRNA), and deliver the corresponding amino acid to the ribosome for protein synthesis.tRNA exists in two forms: precursor tRNA and mature tRNA.When acted upon by enzymes like Dicer, elaC ribonuclease Z 2(ELAC2), angiopoietin(ANG), and other ribonucleases, tRNA is broken down into tRNA-derived stress-induced RNA(tiRNA)and tRNA-derived fragments(tRF).Recent advancements in RNA sequencing technology have led to increased interest in tiRNA and tRF, shedding light on their roles in various physiological and pathological processes.tRNA-derived small molecules(tsRNA)function similarly to microRNA(miRNA), influencing gene expression and protein synthesis.They show promise as diagnostic markers and potential therapeutic targets for age-related diseases.This review offers a comprehensive analysis of tsRNA classification, biological functions, research advancements, and clinical applications in age-related conditions.

The primary role of transfer RNA(tRNA)is to connect a specific amino acid to its 3' end, use its anticodon to match the codon on messenger RNA(mRNA), and deliver the corresponding amino acid to the ribosome for protein synthesis.tRNA exists in two forms: precursor tRNA and mature tRNA.When acted upon by enzymes like Dicer, elaC ribonuclease Z 2(ELAC2), angiopoietin(ANG), and other ribonucleases, tRNA is broken down into tRNA-derived stress-induced RNA(tiRNA)and tRNA-derived fragments(tRF).Recent advancements in RNA sequencing technology have led to increased interest in tiRNA and tRF, shedding light on their roles in various physiological and pathological processes.tRNA-derived small molecules(tsRNA)function similarly to microRNA(miRNA), influencing gene expression and protein synthesis.They show promise as diagnostic markers and potential therapeutic targets for age-related diseases.This review offers a comprehensive analysis of tsRNA classification, biological functions, research advancements, and clinical applications in age-related conditions.

Unicorn lotus is a plant tuber in the araceae family, which has therapeutic effects such as dispelling cold and dampness, dispelling wind and phlegm, and treating stroke. However, acute poisoning of fresh Unicorn lotus has been rarely reported domestically and internationally. This article reports a case of poisoning caused by chewing unicorn lotus. The patient experienced numbness in the lips, swelling and rupture of the oral cavity, continuous salivation, difficulty swallowing and obvious burning sensation in the throat, accompanied by shortness of breath and mild hypoxemia. After receiving comprehensive treatments such as oxygen therapy, electrocardiographic monitoring, cleaning of necrotic oral mucosa, anti infection, inhibition of oral salivary secretion, and nutritional support, the patient finally recovered and was discharged.

Objective:To assess the efficacy of parent training (PT) on attention deficit hyperactivity disorder (ADHD) symptoms, behavioral problems, and parenting stress in child with ADHD or ADHD symptoms.Methods:Randomized controlled trials of the effect of PT on ADHD symptoms in Chinese children with ADHD or ADHD symptoms were collected by PsychINFO, PubMed, EMBASE, Web of science, Scopus, China National Knowledge database, WanFang database, the China Science and Technology Journal Database and the China Biology Medicine disc. The quality of the included studies was evaluated by version 2 of the Cochrane tool for assessing risk of bias in randomized trial. Forest plots were drawn using Review Manager 5.4.1, sensitivity analyses of results were performed using Stata 18.0 to assess the stability of the results, and publication bias was assessed using funnel plots and Egger's test.Results:A total of 10 studies containing 571 subjects in the experimental group and 562 subjects in the control group met the inclusion exclusion criteria. Significant differences were observed in various measures, including overall ADHD symptoms (MD=-2.43, 95% CI: -3.95--0.91), inattention (MD=-1.10, 95% CI: -1.94--0.26), hyperactivity/impulsivity (SMD=-0.58, 95% CI: -0.87--0.28), overall conduct problems (SMD=-0.80, 95% CI: -1.05--0.55), conduct problem (SMD=-1.34, 95% CI: -2.31--0.37), learning problem (SMD=-0.81, 95% CI: -1.40--0.23), impulsivity/hyperactivity (SMD=-0.53, 95% CI: -0.78--0.29), hyperactivity index (SMD=-1.27, 95% CI: -1.99--0.55), parenting stress index (SMD=-0.69, 95% CI: -1.12--0.26), difficult child (MD=-1.96, 95% CI: -3.44--0.48), dysfunctional interaction (MD=-3.10, 95% CI: -4.43--1.78), and parenting distress (MD=-3.35, 95% CI: -4.59--2.12)(all P<0.05). However, no significant differences were observed in oppositional-defiant disorder, anxiety, or somatic problem. Conclusions:The initial findings suggested that PT was effective for Chinese children with ADHD or ADHD symptoms.The addition of PT appeared to improve core symptoms of ADHD (inattention and hyperactivity/impulsivity), conduct problems, and parental stress more effectively than routine care alone.

Objective To standardize nursing management on postoperative patients with a left ventricular assist-ant device(LVAD).Methods The first draft of the Consensus was formed on the basis of literature review.2 rounds of expert consultations and a round of online meeting discussion were held for adjustments and modifications the draft of the Consensus.Results The recovery rate of the inquiry questionnaire was 93.75%.The authority coefficients of the 2 rounds of inquiry experts were 0.927 and 0.920.The concentration degree of expert opinions for each indicator was greater than 3.5 score,and the coefficient of variation was less than 0.25.The Kendall harmony coefficients for 2 rounds of correspondence were 0.402 and 0.407(P<0.01).The final Consensus formed through expert consultations and meetings includes 7 themes:hemodynamic monitoring,LVAD function monitoring,coagulation function monitoring,percutaneous cable and wound care,exercise rehabilitation care,health education and guidance,and pre-discharge assessment.Conclusion The Consensus is scientific,rigorous,and authoritative.The Consensus covers all aspects of postoperative care for patients with LVAD,and it will benefit to clinical practice.

Unicorn lotus is a plant tuber in the araceae family, which has therapeutic effects such as dispelling cold and dampness, dispelling wind and phlegm, and treating stroke. However, acute poisoning of fresh Unicorn lotus has been rarely reported domestically and internationally. This article reports a case of poisoning caused by chewing unicorn lotus. The patient experienced numbness in the lips, swelling and rupture of the oral cavity, continuous salivation, difficulty swallowing and obvious burning sensation in the throat, accompanied by shortness of breath and mild hypoxemia. After receiving comprehensive treatments such as oxygen therapy, electrocardiographic monitoring, cleaning of necrotic oral mucosa, anti infection, inhibition of oral salivary secretion, and nutritional support, the patient finally recovered and was discharged.

Objective:To explore the optimization of surgical procedures for laryngotracheal stenosis and its effect analysis.Methods:The data of 32 patients with acquired laryngotracheal stenosis who received surgical treatment from October 2015 to December 2021 were analyzed retrospectively. The age ranged from 19 to 72 years, with an average of (34.0±9.0) years. The medical history ranged from 1 to 32 months (median 3 months). As for etiology, there were 30 cases of iatrogenic laryngotracheal stenosis, including 20 cases of tracheal intubation and 10 cases of tracheotomy (7 cases of percutaneous tracheotomy and 3 cases of traditional tracheotomy). There were 1 case of laryngotracheal trauma and 1 case of airway Penicillium marneffei infection. According to Myer-Cotton grading system, grade Ⅳ stenosis was found in 14 cases, including 12 cases involving trachea and 2 cases involving trachea and subglottic area.There were 18 cases of grade Ⅲ, all of which involved the cervical trachea 5 cases failed in operation in other hospitals. According to stenosis grading, course of disease, primary disease control and the patient′s general condition, the surgical plan was determined individually. The operations of end-to-end anastomosis, circumferential tracheal partial resection, T-tube placement and CO 2 laser tracheal scar resection were performed respectively. The recovery of airway function and perioperative complications were observed one year after operation. Results:End-to-end anastomosis was performed in 16 cases, and partial circumferential tracheal resection in 2 cases, and tracheal granulation (scar) resection by CO 2 laser in 2 cases and T-tube insertion in 12 cases. Eighteen cases which performed end-to-end anastomosis, partial resection of circumferential trachea in and 2 cases which performed laser tracheal scar resection were all recovered airway function at one stage. After 1 year, 19 cases were cured and 1 case was effective. Of 12 patients with T tube implantation, 11 cases were successfully extubated after 6-12 months, 7 cases were cured after 1 year, 2 cases were effective and 3 cases were ineffective. Among the 3 cases of failure, 2 cases were successfully extubated by sleeve resection and end-to-end anastomosis in the second stage, and the other case refused to accept other treatment methods and the T-tube was placed again, and the tube was blocked and the patient survived. During the follow-up period, the total cure rate was 87.5%, the effective rate was 9.4%, and the total extubation rate was 96.9%.The most common complication was subcutaneous emphysema, accounting for 78% (25/32), but no serious mediastinal emphysema or pneumothorax occurred. In the T-tube implantation group, granulation tissue grew in different degrees around the neck wound after operation, and improved or disappeared after 6-9 months. Anterior cervical tracheal fistula occurred in 4 cases of T-tube implantation group after extubation, which were cured by sealing the stoma. There were no complications such as severe bleeding or perioperative death. Conclusion:When there were various factors, the optimization of the surgical plan according to the degree of stenosis, the course of disease, the control of primary disease and the general condition was an important guarantee to improve the curative effect of laryngotracheal stenosis.

Dilated cardiomyopathy(DCM)is a common disease leading to heart failure,arrhythmia,and sudden death.The etiology of DCM is complex and diverse,and the mechanisms have not been fully elucidated.Conventional interventions have a limited ability to improve the prognosis of patients,who have a 10-year survival rate of less than 25％.This study aimed to summarize the construction and characteristics of a DCM animal model and evaluate the clinical compatibility of the model with traditional Chinese and Western medicines.Analysis was based on domestic and overseas research into DCM animal models,Western clinical diagnostic criteria,and traditional Chinese medicine syndrome differentiation.The DCM modeling method mainly involved gene editing,drug induction,immune induction,viral infection,and rapid pacing induction.Experimental animals included muroids,zebrafish,Drosophila,and pigs,of which mice and rats were most commonly used.Gene editing was the most commonly used method for modelling DCM,followed by doxorubicin-induction.In the literature,the experimental animals,drugs,single or cumulative doses,administration method,and modeling period used varied among studies involving DCM animal models.The level of clinical anastomosis according to traditional Chinese and Western medicines varied considerably,being generally lower in traditional Chinese medicine than Western medicine in the same model.In addition,the modeling standards for DCM animal models were mostly based on Western medicine theories.The differentiation of syndrome models and information collection for the four diagnoses have not been standardized and unified.In the future,stable and homogeneous animal models of high clinical consistency combining both disease and syndrome need to be established to provide a basis for DCM mechanism research and drug development.

Dilated cardiomyopathy(DCM)is a common disease leading to heart failure,arrhythmia,and sudden death.The etiology of DCM is complex and diverse,and the mechanisms have not been fully elucidated.Conventional interventions have a limited ability to improve the prognosis of patients,who have a 10-year survival rate of less than 25％.This study aimed to summarize the construction and characteristics of a DCM animal model and evaluate the clinical compatibility of the model with traditional Chinese and Western medicines.Analysis was based on domestic and overseas research into DCM animal models,Western clinical diagnostic criteria,and traditional Chinese medicine syndrome differentiation.The DCM modeling method mainly involved gene editing,drug induction,immune induction,viral infection,and rapid pacing induction.Experimental animals included muroids,zebrafish,Drosophila,and pigs,of which mice and rats were most commonly used.Gene editing was the most commonly used method for modelling DCM,followed by doxorubicin-induction.In the literature,the experimental animals,drugs,single or cumulative doses,administration method,and modeling period used varied among studies involving DCM animal models.The level of clinical anastomosis according to traditional Chinese and Western medicines varied considerably,being generally lower in traditional Chinese medicine than Western medicine in the same model.In addition,the modeling standards for DCM animal models were mostly based on Western medicine theories.The differentiation of syndrome models and information collection for the four diagnoses have not been standardized and unified.In the future,stable and homogeneous animal models of high clinical consistency combining both disease and syndrome need to be established to provide a basis for DCM mechanism research and drug development.

Objective:To establish a risk prediction model for prolonged mechanical ventilation in adult heart transplant recipients.Methods:This study used structured language to query hospital electronic medical record systems. From January 2004 to December 2021, 957 adult recipients undergoing cardiac transplantation at Fuwai Hospital of the Chinese Academy of Medical Sciences were selected as the study subject using a convenience sampling. This study collected basic information, past history, preoperative blood creatinine, preoperative total bilirubin, preoperative ventilation assistance, and intraoperative donor heart cold ischemia time. The enrolled patients were divided into a training group ( n=717) and a validation group ( n=240) in a ratio of 3∶1. Based on the training group data, a risk prediction model was constructed using two-way stepwise Logistic regression. The prediction performance of the model was evaluated using the area under the receiver operating characteristic (ROC) curve, sensitivity and specificity based on the validation group data. Results:A total of 957 adult heart transplant recipients were included, and 18.39% (176/957) of them experienced prolonged mechanical ventilation (>24 hours) after surgery. Based on the model established by the training group data, 7 independent risk factors for prolonged mechanical ventilation after surgery were clarified, including age ≥ 60 years old ( OR=1.820), history of blood transfusion ( OR=5.237), previous cardiac surgery ( OR=2.826), preoperative total bilirubin≥ 34.2 μmol/L ( OR=1.861), preoperative ventilator assistance ( OR=9.421), preoperative intra-aortic balloon pump assistance ( OR=1.826), intraoperative donor heart cold ischemia time≥ 360 min ( OR=2.093) ( P<0.05). The area under the curve of the model was 0.676 (95% confidence interval was 0.581 to 0.770), with a sensitivity of 0.500, and a specificity of 0.796. Conclusions:Based on the data of adult heart transplant recipients from a single center, this study established a relatively simple and objective risk prediction model that can predict the prolonged mechanical ventilation in adult heart transplant recipients, and has good clinical value.