Gelsemium elegans, a vine plant of Loganiaceae, has both medicinal and forage values. However, it is susceptible to low temperatures during growth. Exploring low temperature response genes is of great significance for cold resistance breeding of G. elegans. Ethylene response factors (ERFs) are the transcription factors of the AP2/ERF superfamily and play a crucial role in plant stress response. In this study, based on the unigene GeERF involved in the response to low temperature stress in the transcriptome of G. elegans, a full-length cDNA sequence of the transcription factor GeERF4B-1 was cloned from the leaves of G. elegans by reverse transcription-polymerase chain reaction (RT-PCR). Bioinformatics analysis showed that GeERF4B-1 had an open reading frame of 759 bp, encoding a protein composed of 252 amino acid residues and with a relative molecular weight of 27 kDa. The deduced protein was predicted to be an unstable, alkaline, and hydrophilic protein. The phylogenetic tree showed that GeERF4B-1 was in the same clade as the B-4 subfamily of the ERF family. The results of the subcellular localization experiment revealed that GeERF4B-1 was located in the nucleus. Real time quantitative PCR (RT-qPCR) analysis indicated that GeERF4B-1 was expressed in the root, stem, and leaf of G. elegans, with the highest expression level in the root. Compared with the control, the treatments with a low temperature (4 ℃), methyl jasmonate (MeJA), and abscisic acid (ABA) up-regulated the expression level of GeERF4B-1, which reached the peak at 24-48 h. This result revealed that GeERF4B-1 actively responded to low temperature, MeJA, and ABA stresses. However, both sodium chloride (NaCl) and drought treatments down-regulated the expression of GeERF4B-1. In addition, a prokaryotic expression vector of GeERF4B-1 was constructed, and a fusion protein of approximately 52 kDa was yielded after induced expression. The results of the plate stress assay showed that compared with the control, the prokaryotic strain expressing GeERF4B-1 demonstrated enhanced tolerance to low temperatures and sensitivity to salt and mannitol stresses. This study provides theoretical references and potential genetic resources for breeding G. elegans varieties with stress resistance.
Transcription Factors/metabolism* ; Plant Proteins/metabolism* ; Gelsemium/metabolism* ; Acetates/pharmacology* ; Gene Expression Regulation, Plant ; Phylogeny ; Cold Temperature ; Amino Acid Sequence ; Cyclopentanes/metabolism* ; Oxylipins/metabolism* ; Stress, Physiological/genetics* ; Abscisic Acid/metabolism* ; Cloning, Molecular

Objective:Currently,patients with pre-exsiting donor-specific antibody(DSA)are prone to antibody-mediated rejection(AMR)after surgery and are at a relatively high risk of postoperative complications and graft failure.The risk of postoperative complications and graft failure is relatively high.This study aims to discuss the clinical outcome of DSA-positive kidney transplantation and analyze the role and safety of preoperative pretreatment in DSA-positive kidney transplantation,providing single-center treatment experience for DSA-positive kidney transplantation. Methods:We retrospectively analyzed the clinical data of 15 DSA-positive kidney transplants in the Department of Renal Transplantation of First Affiliated Hospital of Zhengzhou University from August 2017 to July 2022.Eight cases were organ donation after citizen's death(DCD)kidney transplant recipients,of which 3 cases in the early stage were not treated with preoperative desensitisation therapy(DCD untreated group,n=3),and 5 recipients were treated with preoperative rituximab desensitisation(DCD preprocessing group,n=5).The remaining 7 cases were living related donors recipients(LRD)who received preoperative desensitisation treatment with rituximab and plasma exchange(LRD preprocessing group,n=7).We observed and recorded the incidence of complications with changes in renal function and DSA levels in the recipients and the survival of the recipients and transplanted kidneys at 1,3 and 5 years,and to compare the differences in recovery and postoperative complications between 3 groups. Results:All 15 recipients were positive for preoperative panel reactive antibody(PRA)and DSA and were treated with methylprednisolone+rabbit anti-human thymocyte immunoglobulin induction before kidney transplantation.DCD untreated group all suffered from DSA level rebound,delayed renal graft function(DGF)and rejection reaction after surgery.After the combined treatment,DSA level was reduced and the graft renal function returned to normal.The DCD preprocessing group were all without antibody rebound,1 recipient developed DGF and the renal function returned to normal after plasmapheresis,and the remaining 4 recipients recovered their renal function to normal within 2 weeks after the operation.In the LRD preprocessing group,2 cases had antibody rebound and 1 case had rejection,but all of them recovered to normal after treatment,and DSA was maintained at a low level or even disappeared.The incidence of DGF and rejection in the DCD untreated group were significantly higher than that in the DCD preprocessing group and the LRD preprocessing group;and there were no significant difference in the incidence of postoperative haematuria,proteinuria,bacterial and fungal infections,and BK virus infection between the 3 groups(all P>0.05).A total of 11 of the 15 recipients were followed up for more than 1 year,6 for more than 3 years,and 1 for more than 5 years,and the survival rates of both the recipients and the transplanted kidneys were 100%. Conclusion:Effective preoperative pretreatment with desensitization therapy can effectively prevent antibody rebound in DSA-positive kidney transplantation and reduce perioperative complications.

Objective:To study the role of myocardial work parameters in early identification of myocardial injury in neonatal asphyxia.Methods:From July 2020 to December 2021, neonates diagnosed with mild neonatal asphyxia admitted to the Department of Neonatology of our hospital within 24 h after birth were prospectively enrolled into the asphyxia group. Neonates without asphyxia during the same period were selected as the control group and matched with the asphyxia group for gender, gestational age and birth weight at a ratio of 1:1~1:2. The asphyxia group was subgrouped into preterm asphyxia group and term asphyxia group. All neonates received echocardiography within 24 h after birth. Multiple parameters were measured including M-mode, two-dimensional image, Doppler image, global longitudinal strain (GLS) and myocardial work parameters [global work index (GWI), global constructive work (GCW), global wasted work (GWW), global work efficiency (GWE)]. The level of serum N-terminal pro brain natriuretic peptide (NT-proBNP) was recorded in the asphyxia group. The data were compared between the asphyxia group and the control group. Correlations between myocardial work parameters and other parameters were analyzed.Results:A total of 33 cases were in the asphyxia group and 43 cases were in the control group. The preterm asphyxia group (18 cases) showed significantly lower GWI and GCW than the preterm control group (18 cases) [GWI: (702±153) mmHg vs. (879±205) mmHg, GCW: (1 016±221) mmHg vs. (1 200±271) mmHg] ( P<0.05). No differences existed in GLS, GWW and GWE. The term asphyxia group (15 cases) showed significantly lower GWW than the term control group (25 cases) [45.0 (30.0, 65.0) mmHg vs. 71.0 (35.5,85.5) mmHg] ( P<0.05). No differences existed in GLS, GWI, GCW and GWE. GWI was negatively correlated with serum NT-proBNP level ( r=-0.327, P<0.05). Conclusions:GWI and GCW may indicate myocardial injury in preterm neonates with mild asphyxia.

Presynaptic dopaminergic PET imaging is a useful method for the diagnosis of parkinsonism. Based on the expert consensus on operation and clinical application of dopamine transporter brain PET imaging technology published in 2020, this paper further recommends the relevant elements of result interpretation of presynaptic dopaminergic PET imaging.

Objective To explore the significance of time-zero renal biopsy on evaluating renal function and postoperative complications after transplantation from donation in old age donors.Methods Clinical and pathological data of 112 transplantations with time-zero renal biopsy which performed in the First Affiliated Hospital of Zhengzhou Hospital from August 2016 to April 2017 were collected.Based on donor age and Remuzzi score,112 transplantations were divided into four groups:Group A (donor age ＜50 years and Remuzzi score is 0 to 3) with 58 recipients,Group B (donor age ＜50 years and score is 4 to 6) with 9 recipients,Group C (donor age≥50 years and score is 0 to 3) with 35 recipients,and Group D (donor age≥50 years and score is 4 to 60) with 10 recipients.Renal function and postoperative complications of recipients in each group were recorded and compared among groups.Results The estimated glomerular filtration rate (eGFR) at 6th month after operation was significantly negatively correlated with glomerular sclerosis (r=-0.398,P=0.05),arteriolar hyaline degeneration (r=-0.416,P＜0.05) and arterial intimal fibrosis (r=-0.242,P＜0.05).Arteriolar hyaline degeneration (β=-0.249,P＜0.05) and arterial intimal fibrosis (β=-0.246,P=0.020) were the independent correlated factors of eGFR at 6th month after operation.The levels of serum creatinine of group D were higher than those in the other three groups at each time after operation(all P＜0.05);Moreover,in group D the eGFR values at each time were lower than those in the other three groups(P＜0.05).Additionally,the incidences of acute rejection within 6 months after operation in group C and D were higher than those in group A and B (all P＜0.05),but the incidences of delayed graft function,hematuria,proteinuria among four groups were not significantly different (all P＞ 0.05).Conclusions Patients who accepted older kidney with moderate histological lesions show worse renal function and higher incidence of acute rejection after transplantation.Recipient selection and postoperative immunosuppressive treatment should be more cautious for those renal donors.

Objective To investigate the clinical significance of serum and urinary levels of neutrophil gelatinase-associated lipocalin (NGAL ) for evaluating changes of residual renal function after living donor kidney resection under different operation model in young versus elderly patients. Methods The clinical data of renal transplants were retrospectively analyzed by successfully using 66 living-related donors at the First Affiliated Hospital of Zhengzhou University from September 2016 to October 2017. According to the operation model and age ,renal donors were divided into 4 groups :group A (young/open) ,group B (young/laparoscopic) ,group C (aged/open) ,and group D (aged/laparoscopic).Blood and urinary NGAL and serum levels of creatinine ,cystatin C ,and other indices of renal function were assayed and collected before and at 1 ,3 ,7 days after operation. Results Both blood NGAL levels and urinary NGAL levels showed no statistically significant difference (all P>0.05) among four groups both before and after operation ,except that urinary NGAL was higher in group C (aged/open) than other groups ,at 1 day after operation ,(P = 0.03).The post-vs.pre-operation level dynamic changes of renal function were four or three times higher in urine or serum NGAL level than in serum creatinine or cystatin C level at 1 day after operation ,which showed an important role for predicting an early residual renal damage and relative treatment. Conclusions NGAL can be used as indices in evaluating changes of residual renal function after living donor kidney resection ,especially in the elderly receiving open kidney resection.

OBJECTIVE:To provide reference for improving the teaching quality of the course of Drug Abuse and ADR Moni-toring in pharmacy master degree candidates. METHODS:In Pharmacy College of Jilin University,traditional teaching method was adopted among pharmacy master degree candidates of grade 2014(n=30,control group);case teaching method was adopted for the course of Drug Abuse and ADR Monitoring among those of grade 2015 (n=32,observation group). The teaching effects were evaluated by questionnaire and examination. RESULTS:Theoretical examination result and case analysis score as well as the rate of excellent case analysis score in observation group were all significantly higher than control group,with statistical signifi-cance (P<0.05). The satisfaction degree of observation group was significantly higher than that of control group in respects of teaching methods,arousing interest in classroom learning,establishing the awareness of safe and rational drug use,with statistical significance (P<0.05). CONCLUSIONS:For the course of Drug Abuse and ADR Monitoring in pharmacy master degree candi-dates,case teaching method improves students'exam results,stimulates students'interest and enthusiasm,promotes the establish-ment of students'safe and rational drug use consciousness and improves teaching quality.

BACKGROUND: Donation after cardiac death (DCD) is becoming the main source of organs for transplantation. Donor and recipient gender may play an important role in preoperative evaluation and recipient selection of transplantation. OBJECTIVE: To analyze the effect of donor and recipient gender on the recovery of renal function after DCD renal transplantation, and to further guide the selection of recipients. METHODS: The clinical data of recipients and donors of DCD kidney transplantation performed at the First Affiliated Hospital of Zhengzhou University from July 2012 to March 2015 were analyzed retrospectively. According to donor and recipient gender, the donors and recipients were divided into four groups: group A (male donor, male recipient), group B (male donor, female recipient), group C (female donor, male recipient), group D (female donor, female recipient). The renal function of the recipients was recorded at 1 and 2 weeks, 1, 3, 6, and 12 months postoperatively to compare the effect of donor and recipient gender on the recovery of renal function. RESULTS AND CONCLUSION: The serum creatinine level in the groups A and B was lower than that in the groups C and D at postoperative different time points, and there was a significant difference at 3, 6 and 12 months postoperatively (P < 0.05). The estimated glomerular filtration rate in the groups A and B was significantly higher than that in the groups C and D at postoperative different time points (P < 0.05). The serum creatinine level in the group C was significantly higher than that in the other three groups at postoperative different time points (P < 0.05). The serum creatinine level in the group A was significantly higher than that in the group B at 3, 6 and 12 months postoperatively (P < 0.05). The glomerular filtration rate in the group A was significantly higher than that in the group C at postoperative different time points (P < 0.05). The glomerular filtration rate in the group B was significantly higher than that in the group D at 12 months postoperatively (P < 0.05). These results suggest that the male donors show superior renal function to the female donors. The postoperative recovery of renal function is relatively slow when the male recipients receive a kidney of female donors. The female recipients with lower body surface area who receive the kidney of elderly male donors with poor renal function can achieve favorable clinical effects. Therefore, the gender should be used as a reference index for selecting potential recipients.