Objective:To assess the association of single nucleotide polymorphisms of rs700519 and rs4646 loci of cytochrome P450 19A1 ( CYP19A1) gene with risk of breast cancer. Methods:Two hundred patients with breast cancer treated at Xinxiang Central Hospital between January 2019 and January 2024 and 100 healthy individuals were enrolled as the study group and control group, respectively. The genotypes of the CYP19A1 gene at the rs700519 and rs4646 loci were determined by direct sequencing. The general data, distribution of CYP19A1 genotypes and alleles were compared between the two groups. This study has been approved by the Medical Ethics Committee of Xinxiang Central Hospital (Ethics No.2021-182). Results:No significant difference was found in age, body mass index, times of conception and proportion of menopause between the two groups ( P>0.05). The frequencies of AA genotype and A allele at the rs700519 locus, and the CC genotype and C allele at the rs4646 locus in the study group were significantly higher than those of the control group ( P<0.05). The frequencies of AA genotype at the rs700519 locus and CC genotype at the rs4646 locus in patients with breast cancer at stages Ⅲ-Ⅳ were significantly higher than those at stage Ⅰ-Ⅱ ( P<0.05). Conclusion:Polymorphisms of CYP19A1 gene at the rs700519 and rs4646 loci are associated with susceptibility of breast cancer. The AA and CC genotypes at the two loci may increase the risk for breast cancer.

OBJECTIVE: To assess the association of single nucleotide polymorphisms of rs700519 and rs4646 loci of cytochrome P450 19A1 (CYP19A1) gene with risk of Breast cancer. METHODS: Two hundred patients with breast cancer treated at Xinxiang Central Hospital between January 2019 and January 2024 and 100 healthy individuals were enrolled as the study group and control group, respectively. The genotypes of the CYP19A1 gene at the rs700519 and rs4646 loci were determined by direct sequencing. The general data, distribution of CYP19A1 genotypes and alleles were compared between the two groups. This study has been approved by the Medical Ethics Committee of Xinxiang Central Hospital (Ethics No. 2021-182). RESULTS: No significant difference was found in age, body mass index, times of conception and proportion of menopause between the two groups (P > 0.05). The frequencies of AA genotype and A allele at the rs700519 locus, and the CC genotype and C allele at the rs4646 locus in the study group were significantly higher than those of the control group (P < 0.05). The frequencies of AA genotype at the rs700519 locus and CC genotype at the rs4646 locus in patients with breast cancer at stages III-IV were significantly higher than those at stage I-II (P < 0.05). CONCLUSION Polymorphisms of CYP19A1 gene at the rs700519 and rs4646 loci are associated with susceptibility of breast cancer. The AA and CC genotypes at the two loci may increase the risk for breast cancer.
Humans ; Female ; Breast Neoplasms/genetics* ; Aromatase/genetics* ; Polymorphism, Single Nucleotide/genetics* ; Middle Aged ; Genetic Predisposition to Disease ; Adult ; Genotype ; Case-Control Studies ; Alleles ; Gene Frequency ; Risk Factors ; Aged

Objective:Based on a single-center retrospective study,to explore the efficacy of intervertebral fusion through different approaches combined with pedicle screw internal fixation in the treatment of single-segment low-grade lumbar spondylolisthesis.Methods:This study retrospectively analyzed the clinical data of 87 patients with single-segment low-grade lumbar spondylolisthesis who were treated in our hospital from January 2021 to August 2022,the cases were divided into Group A(41 cases)and Group B(46 cases)according to the differences in surgical methods.Group A received treatment with posterior lumbar interbody fusion(PLIF)combined with pedicle screw internal fixation,while Group B received treatment with percutaneous endoscopic posterior lumbar interbody fusion(PE-PLIF)combined with pedicle screw internal fixation.Both groups were followed up for two years.The Visual Analogue Scale(VAS)scores of the waist and legs,perioperative indicators,recovery of lumbar function[Japanese Orthopaedic Association(JOA)score,Oswestry Disability Index(ODI)score],and serum inflammatory mediators levels[interleukin-1α(IL-1α),transforming growth factor β1(TGF-β1),interleukin-6(IL-6)],the rate of lumbar interbody fusion,the rate of lumbar spondylolisthesis and the incidence of postoperative complications of the two groups were compared.Results:The operation time and the number of intraoperative X-ray fluoroscopy sessions in group B were both more than those in group A,while the hospital stay,the intraoperative blood loss and total incision length in Group B were all shorter than those in group A(P＜0.05).The VAS scores of the waist and legs in both groups decreased at 3 d after operation and the last follow-up(P＜0.05),and the VAS scores of the waist and legs in group B were lower than those in group A(P＜0.05).The ODI scores of both groups decreased at 3 d after operation and the last follow-up,and the ODI scores of group B were lower than those in group A;The JOA score increased,and the JOA scores of group B were all higher than those in group A(P＜0.05).Serum IL-1α,TGF-β1 and IL-6 levels in both groups decreased at 3 d and 7 d after operation,and serum IL-1α,TGF-β1 and IL-6 levels in group B were all lower than those in group A(P＜0.05).There was no statistically significant difference in the incidence of complications,the rate of lumbar interbody fusion,and the rate of lumbar spondylolisthesis between the two groups(P＞0.05).Conclusion:Compared with PLIF,PE-PLIF combined with pedicle screw internal fixation in the treatment of single-segment low-grade lumbar.spondylolisthesis,can better relieve the degree of pain of the waist and legs,improve lumbar dysfunction,regulate serum inflammatory mediators levels more effectively,and has higher safety and significant therapeutic efficacy.

Objective:To establish a rapid and accurate duplex real-time fluorescent reverse transcription-recombinase polymerase amplification/recombinase-aided amplification（RT-RPA/RAA）detection method for identification and differentiation of Nipah virus（NiV），Langya virus（LayV），Mojiang virus（MoJV），and Cedar virus（CedV）.Methods:First，specific primers and probes were designed targeting the conserved L gene regions of NiV and LayV，as well as the conserved N gene regions of MoJV and CedV，respectively. The four viruses were divided into two groups for duplex detection. Subsequently，the optimal primer and probe combinations were screened by comparing the amplification efficiency of different primer pair combinations（F1/R1，F1/R2，F2/R1，F2/R2）. The reaction temperature was optimized through temperature gradient settings from 37 ℃ to 42 ℃，and the amounts of primers and probes were optimized to establish the duplex real-time fluorescent RT-RPA/RAA detection system. Finally，the detection performance was evaluated through specificity，sensitivity，and stability tests，as well as clinical sample validation.Results:The selected primer pairs（NiV primer pair F2/R1，LayV primer pair F1/R1，MoJV primer pair F2/R2，and CedV primer pair F2/R2）all demonstrated optimal amplification efficiency when combined with their corresponding probes. The optimal annealing temperature was 39 ℃，and the minimum detection limit was 101-102 copies/μl. The method could effectively distinguish target viruses from other non-target viruses，and repeated experiments showed good stability（ R2> 0.90）. Additionally，detection results for Malaysian NiV strains and various clinical samples were consistent with the Taqman multiplex qRT-PCR method. Conclusion:The duplex real-time fluorescent RT-RPA/RAA detection method successfully established in this study can rapidly and accurately identify and differentiate four important henipavirus-like viruses：NiV，LayV，MoJV，and CedV. It features simple operation，rapid reaction，high specificity，and good stability，providing an effective molecular detection tool for rapid field diagnosis，surveillance，and control of these zoonotic viruses.

Objective:Based on a single-center retrospective study,to explore the efficacy of intervertebral fusion through different approaches combined with pedicle screw internal fixation in the treatment of single-segment low-grade lumbar spondylolisthesis.Methods:This study retrospectively analyzed the clinical data of 87 patients with single-segment low-grade lumbar spondylolisthesis who were treated in our hospital from January 2021 to August 2022,the cases were divided into Group A(41 cases)and Group B(46 cases)according to the differences in surgical methods.Group A received treatment with posterior lumbar interbody fusion(PLIF)combined with pedicle screw internal fixation,while Group B received treatment with percutaneous endoscopic posterior lumbar interbody fusion(PE-PLIF)combined with pedicle screw internal fixation.Both groups were followed up for two years.The Visual Analogue Scale(VAS)scores of the waist and legs,perioperative indicators,recovery of lumbar function[Japanese Orthopaedic Association(JOA)score,Oswestry Disability Index(ODI)score],and serum inflammatory mediators levels[interleukin-1α(IL-1α),transforming growth factor β1(TGF-β1),interleukin-6(IL-6)],the rate of lumbar interbody fusion,the rate of lumbar spondylolisthesis and the incidence of postoperative complications of the two groups were compared.Results:The operation time and the number of intraoperative X-ray fluoroscopy sessions in group B were both more than those in group A,while the hospital stay,the intraoperative blood loss and total incision length in Group B were all shorter than those in group A(P＜0.05).The VAS scores of the waist and legs in both groups decreased at 3 d after operation and the last follow-up(P＜0.05),and the VAS scores of the waist and legs in group B were lower than those in group A(P＜0.05).The ODI scores of both groups decreased at 3 d after operation and the last follow-up,and the ODI scores of group B were lower than those in group A;The JOA score increased,and the JOA scores of group B were all higher than those in group A(P＜0.05).Serum IL-1α,TGF-β1 and IL-6 levels in both groups decreased at 3 d and 7 d after operation,and serum IL-1α,TGF-β1 and IL-6 levels in group B were all lower than those in group A(P＜0.05).There was no statistically significant difference in the incidence of complications,the rate of lumbar interbody fusion,and the rate of lumbar spondylolisthesis between the two groups(P＞0.05).Conclusion:Compared with PLIF,PE-PLIF combined with pedicle screw internal fixation in the treatment of single-segment low-grade lumbar.spondylolisthesis,can better relieve the degree of pain of the waist and legs,improve lumbar dysfunction,regulate serum inflammatory mediators levels more effectively,and has higher safety and significant therapeutic efficacy.

Objective:To assess the association of single nucleotide polymorphisms of rs700519 and rs4646 loci of cytochrome P450 19A1 ( CYP19A1) gene with risk of breast cancer. Methods:Two hundred patients with breast cancer treated at Xinxiang Central Hospital between January 2019 and January 2024 and 100 healthy individuals were enrolled as the study group and control group, respectively. The genotypes of the CYP19A1 gene at the rs700519 and rs4646 loci were determined by direct sequencing. The general data, distribution of CYP19A1 genotypes and alleles were compared between the two groups. This study has been approved by the Medical Ethics Committee of Xinxiang Central Hospital (Ethics No.2021-182). Results:No significant difference was found in age, body mass index, times of conception and proportion of menopause between the two groups ( P>0.05). The frequencies of AA genotype and A allele at the rs700519 locus, and the CC genotype and C allele at the rs4646 locus in the study group were significantly higher than those of the control group ( P<0.05). The frequencies of AA genotype at the rs700519 locus and CC genotype at the rs4646 locus in patients with breast cancer at stages Ⅲ-Ⅳ were significantly higher than those at stage Ⅰ-Ⅱ ( P<0.05). Conclusion:Polymorphisms of CYP19A1 gene at the rs700519 and rs4646 loci are associated with susceptibility of breast cancer. The AA and CC genotypes at the two loci may increase the risk for breast cancer.

Objective:To establish a rapid and accurate duplex real-time fluorescent reverse transcription-recombinase polymerase amplification/recombinase-aided amplification（RT-RPA/RAA）detection method for identification and differentiation of Nipah virus（NiV），Langya virus（LayV），Mojiang virus（MoJV），and Cedar virus（CedV）.Methods:First，specific primers and probes were designed targeting the conserved L gene regions of NiV and LayV，as well as the conserved N gene regions of MoJV and CedV，respectively. The four viruses were divided into two groups for duplex detection. Subsequently，the optimal primer and probe combinations were screened by comparing the amplification efficiency of different primer pair combinations（F1/R1，F1/R2，F2/R1，F2/R2）. The reaction temperature was optimized through temperature gradient settings from 37 ℃ to 42 ℃，and the amounts of primers and probes were optimized to establish the duplex real-time fluorescent RT-RPA/RAA detection system. Finally，the detection performance was evaluated through specificity，sensitivity，and stability tests，as well as clinical sample validation.Results:The selected primer pairs（NiV primer pair F2/R1，LayV primer pair F1/R1，MoJV primer pair F2/R2，and CedV primer pair F2/R2）all demonstrated optimal amplification efficiency when combined with their corresponding probes. The optimal annealing temperature was 39 ℃，and the minimum detection limit was 101-102 copies/μl. The method could effectively distinguish target viruses from other non-target viruses，and repeated experiments showed good stability（ R2> 0.90）. Additionally，detection results for Malaysian NiV strains and various clinical samples were consistent with the Taqman multiplex qRT-PCR method. Conclusion:The duplex real-time fluorescent RT-RPA/RAA detection method successfully established in this study can rapidly and accurately identify and differentiate four important henipavirus-like viruses：NiV，LayV，MoJV，and CedV. It features simple operation，rapid reaction，high specificity，and good stability，providing an effective molecular detection tool for rapid field diagnosis，surveillance，and control of these zoonotic viruses.

Objective:To analyze the effects of highdose methotrexate(HD-MTX)and lenalidomide as central nervous system(CNS)prophylaxis strategies in patients with diffuse large B-cell lymphoma(DLBCL).Methods:The data of DLBCL patients with high risk of CNS recurrence who were initially treated in Fujian Provincial Hospital and Fujian Cancer Hospital from January 2012 to June 2022 were analyzed retrospectively.The patients were divided into HD-MTX group and lenalidomide group according to different prophylaxis strategies.Each group was further divided into high-risk group and medium-risk group based on CNS-IPI score and/or testicular involvement.The CNS relapse-free survival(CRFS)rate,adverse effects,and the effects of different prophylaxis strategies on overall survival(OS)rate and progression-free survival(PFS)rate were evaluated in different groups and subgroups.Results:There were 200 patients enrolled in this study,80 cases in lenalidomide group and 120 cases in HD-MTX group.According to the delivery timing of prophylactic HD-MTX,the patients in HD-MTX group were further divided into two groups:80 cases at the end of induction chemotherapy and 40 cases during chemotherapy interval.At a median follow-up of 48(14-133)months,the 4-year CRFS rate,4-year PFS rate,and 4-year OS rate of the HD-MTX group was 93.6％,57.2％,and 68.8％,respectively,while that of the lenalidomide group was 90.4％,69.4％and 75.6％.There were no significant differences in 4-year CRFS rate,4-year PFS rate,and 4-year OS rate between HD-MTX group and lenalidomide group(all P＞0.05),but lenalidomide group showed a trend of improvement in PFS.Further subgroup analysis showed that there was no significant difference in 4-year CRFS rate between high-risk patients of the two groups(91.7％vs 83.4％,P＞0.05),while 4-year PFS rate showed difference(49.5％vs 64.2％,P＜0.05).A total of 248 cycles were collected for adverse reaction analysis in the HD-MTX group,and 25 cycles occurred neutropenia accompanied with infection(10.1％),while in lenalidomide group 240 cycles were collected in which 20 cycles occurred neutropenia accompanied with infection(8.3％).Both the two groups had no treatment-related deaths.Conclusion:Compared with HD-MTX,lenalidomide combined with immunochemotherapy can prevent CNS relapse,at the same time,improve prognosis,which is a safe and well tolerated central prophylaxis strategy.

Objective To investigate the incidence rate,clinical characteristics,and prognosis of neonatal stroke in Shenzhen,China.Methods Led by Shenzhen Children's Hospital,the Shenzhen Neonatal Data Collaboration Network organized 21 institutions to collect 36 cases of neonatal stroke from January 2020 to December 2022.The incidence,clinical characteristics,treatment,and prognosis of neonatal stroke in Shenzhen were analyzed.Results The incidence rate of neonatal stroke in 21 hospitals from 2020 to 2022 was 1/15 137,1/6 060,and 1/7 704,respectively.Ischemic stroke accounted for 75％(27/36);boys accounted for 64％(23/36).Among the 36 neonates,31(86％)had disease onset within 3 days after birth,and 19(53％)had convulsion as the initial presentation.Cerebral MRI showed that 22 neonates(61％)had left cerebral infarction and 13(36％)had basal ganglia infarction.Magnetic resonance angiography was performed for 12 neonates,among whom 9(75％)had involvement of the middle cerebral artery.Electroencephalography was performed for 29 neonates,with sharp waves in 21 neonates(72％)and seizures in 10 neonates(34％).Symptomatic/supportive treatment varied across different hospitals.Neonatal Behavioral Neurological Assessment was performed for 12 neonates(33％,12/36),with a mean score of(32±4)points.The prognosis of 27 neonates was followed up to around 12 months of age,with 44％(12/27)of the neonates having a good prognosis.Conclusions Ischemic stroke is the main type of neonatal stroke,often with convulsions as the initial presentation,involvement of the middle cerebral artery,sharp waves on electroencephalography,and a relatively low neurodevelopment score.Symptomatic/supportive treatment is the main treatment method,and some neonates tend to have a poor prognosis.

To reduce the subjectivity and uncertainty present in the current international methods of drug value pricing when converting value into monetary prices,based on the hedonic pricing theory,it considers the post-negotiation price between manufacturers and payers as a reasonable price reference in the value pricing of Chinese patent medicine.By constructing an indicator system for the characteristics of Chinese patent medicine,it selects and measures the value characteristic variables that affect the price of Chinese patent medicine.It serves as the theoretical foundation and research basis for establishing a Hedonic price model between characteristic price variables and negotiation prices,thereby promoting the enhancement of rationality and objectivity in value-guided pricing of Chinese patent medicine.