Objective To use chromosome microarray analysis(CMA)technology to detect and analyze spontaneous abortion tissues,and explore the genetic factors that contribute to the occurrence of spontaneous abortion.Methods The abortion tissues of totally 1 038 patients with spontaneous abortion who came to the hospital for treatment from January 1,2019 to December 31,2021 were collected.CMA technology was used to detect the tissues,and the results were analyzed for genetic etiology.Results Among 1 038 cases of spontane-ous abortion patients,901 cases were qualified for sampling and 901 cases were actually tested.There were 443 cases of chromosomal abnormalities and(or)copy number variations(CNV)with unknown significance de-tected by CMA,with an abnormality rate of 49.17％.There were 41 cases of pathogenic CNV,accounting for 9.26％of the total abnormalities.There were statistically significant differences in the total chromosome ab-normality rate(x2=17.37)and chromosome number abnormality rate(x2=26.43)of aborted fetuses among different age groups of pregnant women(P＜0.001).There were statistically significant differences in the to-tal chromosome abnormality rate(x2=19.63)and chromosome number abnormality rate(x2=22.66)of dif-ferent miscarriage tissues during pregnancy(P＜0.001).Conclusion The application of CMA technology to detect the miscarriage tissue of patients with spontaneous abortion can improve the detection rate of chromo-somal abnormalities in miscarriage embryos,discover potential genetic factors,and provide genetic guidance for patients' next pregnancy.

Objective To establish models for real-time dynamic monitoring of intracellular cytoplasmic adenosine triphosphate(ATP)and mitochondrial ATP levels in cells in order to study the changes in metabolic processes.Methods The lentiviral plasmids of the cytoplasmic chemogenetic green fluorescent protein(GFP)ATP probe(Chemo-G)and those of the mitochondrial-localized chemogenetic GFP ATP probe(mito-Chemo-G)were constructed before being transfected into HEK293T together with the helper plasmids,respectively.Chemo-G and mito-Chemo-G lentiviruses were obtained.HeLa cells were infected with the lentivirus.Puromycin resistance selection and flow cytometry cell sorting were employed to identify and isolate the infected HeLa cells.The growth and GFP expressions of HeLa cells were observed.A live-cell imaging system was used for continuous imaging of the cells,with stimuli added at specific time points to alter intracellular ATP levels to observe changes in the fluorescence intensity of the ATP probe.Results Lentiviral plasmids containing Chemo-G and mito-Chemo-G sequences were constructed.Two cell lines which could stably express Chemo-G and mito-Chemo-G were established that exhibited strong growth and accurate intracellular fluorescence localization.Live-cell imaging revealed that after the addition of 2-deoxy-D-glucose(2-DG)into HeLa-Chemo-G,the fluorescence resonance energy transfer(FRET)/GFP ratio showed a decrease that was partially reversed by the addition of glucose.The FRET/GFP ratio increased after histamine stimulation,but rapidly decreased after the addition of oligomycin.Conclusion The Chemo-G and mito-Chemo-G lentiviral vectors and stably transfected cell lines HeLa-Chemo-G and HeLa-mito-Chemo-G are constructed,which provides reliable experimental models for studying cellular metabolism and changes in intracellular ATP levels.

Outpatient humanistic care refered to providing a full process of caring medical services to outpatients. In order to standardize the human caring services for outpatients in medical institutions, promote the comprehensive service level of outpatient services, and improve the patient′s medical experience, Chinese Association for Life Care issued the group standard of Management Norms for Human caring of Outpatients in April 2023. This standard clarified the relevant terms and definitions of human caring for outpatients, specified the basic requirements for human caring, the humanistic quality and care responsibilities of outpatient staff, the outpatient care environment and facilities, the outpatient care process and measures, and quality management. It designed standardized and personalized full process care service norms, providing references for medical institutions at all levels to promote the development of human caring for outpatients.

AIM:To describe the dynamic characteristics of mitochondria in the development of mouse embryonic hematopoietic stem cells,and to explore the function of mitochondria in this process.METHODS:Single-cell transcrip-tomic data of continuous developmental hematopoietic stem cell-related populations were analyzed to describe the dynamic changes of genes related to mitochondrial synthesis and energy metabolism.To explore the dynamic changes in the number and activity of mitochondria during the development of hematopoietic stem cells,we detected the mitochondrial number and mitochondrial membrane potential of the cells in each stage of hematopoietic stem cell development by fluorescent probe staining combined with flow cytometry.We added small molecule inhibitors of mitochondrial synthesis and energy metabolism and used hematopoietic cell colony formation assay to detect the effect of mitochondrial function inhibition on the induction of hematopoietic products in vitro.RESULTS:(1)Single-cell transcriptome analysis showed that genes in-volved in mitochondrial synthesis and oxidative phosphorylation were significantly up-regulated in endothelial cell and type Ⅰ pre-hematopoietic stem cell compared with those involved in glycolysis,and these genes could significantly distinguish continuous dynamic populations.(2)The results of fluorescence staining and flow cytometry analysis showed that mito-chondrial number and mitochondrial membrane potential had an increasing trend during the continuous development of he-matopoietic stem cell,reaching the highest level in the precursor stage of type 2 pre-hematopoietic stem cell,and decreasing in the mature hematopoietic stem cell of fetal liver.(3)Compared with control group,inhibition of mitochondrial respirato-ry chain Ⅰ and Ⅴ significantly reduced the number of hematopoietic colonies(P<0.05).CONCLUSION:(1)Genes re-lated to mitochondrial synthesis and oxidative phosphorylation are highly expressed in hemogenic endothelial cells and type Ⅰpre-hematopoietic stem cells,and can be used to distinguish continuous developing populations.(2)The mitochondrial number and mitochondrial membrane potential increased continuously during hematopoietic stem cell development and reached the highest level in type 2 pre-hematopoietic stem cells.(3)Inhibition of mitochondrial respiratory chain Ⅰ and Ⅴ significantly reduced the production of hematopoietic products in vitro.

OBJECTIVE: To explore the genetic etiology of a fetus with Cornelia de Lange syndrome type 1. METHODS: Clinical data of the fetus was collected. Genomic DNA was extracted from amniotic fluid and peripheral blood samples of the parents and subjected to low-depth copy number variant sequencing, whole exome sequencing (WES) and Sanger sequencing. Pathogenicity of the candidate variant was predicted based on the guidelines of American College of Medical Genetics and Genomics (ACMG). Minigene assay was used to assess the effect of the variant on mRNA splicing. RESULTS: WES revealed that the fetus has harbored a heterozygous c.5808+5gG>A variant in the intron of the NIPBL gene, which was predicted to affect the mRNA splicing. The same variant was not detected in either parent. The variant was not recorded in ExAC, 1000G and dbSNP databases. Comprehensive analysis showed that the variant was deleterious and may result in skipping of exon 31 during mRNA splicing. CONCLUSION The fetus was diagnosed with Cornelia de Lange syndrome type 1. Splicing variant identified by WES may be verified by minigene assay in vitro, which can provide more evidence for the prediction of its pathogenicity.
Cell Cycle Proteins/genetics* ; De Lange Syndrome/genetics* ; Female ; Fetus ; Humans ; Mutation ; Pregnancy ; Prenatal Diagnosis ; RNA, Messenger

Objective:To study the clinical and laboratory characteristics of neonatal isolated sulfite oxidase deficiency (ISOD).Methods:An infant with neonatal ISOD admitted to our hospital was retrospectively analyzed. Using key words "isolated sulfite oxidase deficiency", "SUOX gene", "Infant, newborn", databases including CNKI, Wanfang database, National library and literature center of science and technology, China science paper online, PubMed, Web of Science and EMBASE (up to January 2021) were searched and literature review was conducted. The clinical manifestations, laboratory results, treatment and prognosis were analyzed.Results:Our patient was a full-term male infant with eye movement disorder, refractory seizures, feeding difficulties, increased muscle tone, developmental retardation and microcephaly. Urine sulfite paper-strip test was positive. Uric acid was normal. Whole exon sequencing (WES) revealed SUOX c.475G>T and c.1201A>G compound heterozygous mutations. Cranial MRI showed multiple encephalomalacia and brain atrophy at 5-month of age. The infant died at 8-month. In the literature review, a total of 29 articles and 32 cases of neonatal ISOD were found. 87.5% of the cases developed symptoms within 1-week after birth. All had convulsive seizures. Some of them had feeding difficulties, muscle tone changes, developmental retardation, microcephaly and ectopia lentis. Cranial imaging showed white matter cystic lesions and brain atrophy. Laboratory examination showed elevated urinary sulfite and S-sulfocysteine. Uric acid and xanthine/hypoxanthine were normal. Blood homocysteine was decreased. 23 cases received genetic testing and all of them had SUOX mutations. The treatment was mainly symptomatic relief and supportive treatment. During follow-up, 15 cases died, 13 cases survived and 4 cases were unknown. All the surviving children had drug-resistant convulsions and developmental retardation.Conclusions:Neonatal ISOD may present with refractory convulsions, feeding difficulties and developmental retardation. Cystic white matter changes and brain atrophy may be seen on cranial imaging. Elevated urinary sulfites, decreased blood homocysteine and normal uric acid are important clues for diagnosis. Genetic testing is helpful for early diagnosis.

Objective ThispaperpresentedaninvestigationonthesimilaritiesanddifferencesintheclinicalfeaturesandCTfindings betweenallogeneichematopoieticstem celltransplantation (allo-HSCT)inducedandnon-transplantinducedair-leaksyndromes (ALS)inpatientssufferingfromhematopathy,toimprovetheunderstandingofALSinpatientswithhematopathy.Methods Retrospective analysesandcomparisonsofclinicaldataandCTimageswereconductedbetweenGroupA (12patientswithALSafterallo-HSCT) andGroupB (26patientswithnon-transplant-relatedALS).A M annG W hitney U testwasperformedtoevaluatethemeasurementdata, andthe χ 2testor Fisher exacttestwasconductedtoexaminetheenumerationdata.Differencethresholdsof P＜0.05from bothsides weretakentobethedeterminantforstatisticalsignificance.Results TheincidenceratesofALSinpatientswithhematopathyafter anallo-HSCTwerefoundtobesignificantlyhigherthanthoseinpatientsonwhomsuchtransplantshadnotbeenperformed(1.84%. vs.0.06%),P＜0.001.SymptomsofdyspneaweremuchmorefrequentlyobservedingroupAcomparedtogroupB (7/12vs1/26), P＜0.01;whereasthedifferencesforthesymptomsofchesttightness,chestpain,andpharyngalgia werenotadequateintermsofstatistical significance,P＞0.05.IngroupA,theoccurrencesofALSsecondarytolongonsetnon-infectionpulmonarycomplications(LONIPC) associatedwithchronicgraft-versus-hostdisease(cGVHD)werefoundin8/12patients,whereastheoccurrencesin15/26patients weresecondarytopulmonaryinfectioningroupB,P＜0.01.Therewerenostatisticallysignificantdifferencesinage,gender,BMI, backgroundblooddisease,basictreatmentcounts,CTtype,treatmentmethodsandCTdisappearancetimelengthbetweenthetwo groups,P＞0.05.Conclusion Thereweredifferencesintheincidencerates,basiclungdiseasesandclinicalsymptomsbetweenallo-HSCT inducedandnon-transplantinducedALSinpatientssufferingfromhematopathy.Hematopathy-associatedALSwascommoninyoung adultswithlankypostures,patientswithleukemiaasback-grounddisease,patientswithahistoryofchemotherapyandpatientswith pulmonarydiseases.Thecommonsymptomsofpatients with hematopathy-associated ALS were chesttightness and chest pain,andpatients’overallprognosisweregood,meanwhileCT manifestationsweremainlycharacterizedbymixedpulmonary interstitialemphysema(PIE)+pneumomediastinum (PM)andsimplepneumothorax (PT).

Background and purpose: Multidrug resistance of tumor cells is the main factor for the failure of chemotherapy. It is found that the apigenin has the anti-tumor effect, but its role in multidrug resistant cells was rarely reported. This study aimed to investigate the effect of apigenin on multidrug resistant breast cancer cell line MCF-7/ADR, and to explore the role of apigenin in reversing multidrug resistance. Methods: The MCF-7/ADR cells were cultured with different concentrations of apigenin, and the same cells were cultured with ADR in the control group. Thecell proliferation was detected by MTT, the cell cycle distribution was detected by PI, and the cell apoptosis was detect-ed by Annexin V/PI. The drug sensitivity in vitro was detected by the method of MTT, and the drug retention rate was detected by rhodamine 123 accumulation. The expression of P-gp protein was measured by Western blot, the RT-PCR method was used to detect the transcription of multidrug resistance gene MDR1. Results: The MCF-7/ADR cell prolif-eration was inhibited by the apigenin, the cell cycle progression was blocked by the apigenin, and the cell apoptosis was induced by the apigenin. There were significant differences between the apigenin group and the ADR group (P<0.05). The IC50 of ADR on MCF-7/ADR cell was (12.37±0.18) μg/mL with the apigenin effect, while the IC50 of ADR on MCF-7/ADR cell was (39.83±0.29) μg/mL without the apigenin effect (P<0.05). The reversal index was 3.22. The retention rate of rhodamine 123 in MCF-7/ADR cells in the apigenin group was higher than that in the ADR group. The MDR1 gene transcription level in MCF-7/ADR cells was higher than that in the MCF-7 cells, and the P-gp expression in MCF-7/ADR cells was higher than that in the MCF-7 cells. However, the level of MDR1 gene transcription and P-gp expression were down-regulated by the apigenin in the MCF-7/ADR cells. Conclusion: The apigenin had anti-MCF-7/ADR effect, and played the role of reversing multidrug resistance in the MCF-7/ADR cells. The mechanism may be related to down-regulation of the MDR1 gene transcription and the P-gp mediated drug e?ux function.

OBJECTIVETo explore the feasibility, safety and efficacy of intraoperative regional infusion chemotherapy by celiac trunk in advanced gastric cancer patients.

METHODSOne hundred and twenty-six patients with advanced gastric cancer(stageII(-III() were screened from database of Gastrointestinal Surgery Department of Taizhou People's Hospital between January 2008 and December 2010 who underwent R0 resection and D2 lymphadenectomy, received postoperative chemotherapy(XELOX or FOLFOX), and had complete follow-up data. They were divided into infusion chemotherapy group (65 cases) and control group (61 cases) according to regional infusion chemotherapy or not (fluorine 1 000 mg and cisplatin 60 mg). The side effects of chemotherapy, parameters related to the operation, long-term survival and relapse rate were compared between the two groups.

RESULTSThe baseline data between the two groups were comparable(all P>0.05). Postoperative III( and IIII( adverse reaction of chemotherapy was not significantly different between the two groups (P>0.05). The time of postoperative intestinal function recovery [(67.9±14.8) hours vs. (68.9±15.0) hours, t=-0.380, P=0.705), volume of postoperative 1-week drainage [(66.1±17.1) ml vs.(61.9±18.2) ml, t=1.478, P=0.142], recent morbidity of complications[55.4%(36/65) vs. 49.2%(30/61), χ=0.256, P=0.613], and the long-term morbidity of complications [16.9% (11/65) vs. 14.8% (9/61), χ=0.111, P=0.739] were all not significantly different between the two groups. The 3-year survival rate and 3-year relapse-free survival rate in infusion chemotherapy group were significantly higher than those in control group(58.4% vs. 37.7%, χ=5.382, P=0.020; 58.4% vs. 34.4%, χ=6.636, P=0.010).

CONCLUSIONRegional infusion chemotherapy by celiac trunk during operation for advanced gastric cancer patients is safe and feasible, and can reduce the risk of local recurrence and improve survival rate.

Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Celiac Artery ; Chemotherapy, Cancer, Regional Perfusion ; adverse effects ; methods ; mortality ; Cisplatin ; administration & dosage ; adverse effects ; therapeutic use ; Deoxycytidine ; analogs & derivatives ; therapeutic use ; Disease-Free Survival ; Fluorine ; administration & dosage ; adverse effects ; therapeutic use ; Fluorouracil ; analogs & derivatives ; therapeutic use ; Gastrectomy ; Humans ; Leucovorin ; therapeutic use ; Lymph Node Excision ; Neoplasm Recurrence, Local ; prevention & control ; Organoplatinum Compounds ; therapeutic use ; Postoperative Complications ; Recovery of Function ; Stomach Neoplasms ; drug therapy ; mortality ; surgery ; Survival Rate

Magnetic nano gene vector is one of the non-viral gene vectors, modified by functional group to bind cationic transfect reagents. Coupling magnetofection with the universal lipofection we developed a novel somatic cell transfection method as the so-called liposomal magnetofection (LMF). This approach is potential to provide somatic cell cloning with stable genetic cell lines to cultivate transgenic animals. In order to construct such liposomal magnetic gene vectors complexes system, we used nano magnetic gene vector to combine with liposomal cationic transfect reagents by molecular self-assembly. This vectors system successfully carried exogenous gene and then transfected animal somatic cells. Here, we conducted atomic force microscopy (AFM), zeta potential-diameter analysis and other characterization experiments to investegate the size distribution and morphology of magnetic nanoparticles, the way of the vectors to load and concentrate DNA molecules. Our data reveal that, the LMF of Pig Kidney cells exhibited higher transfection efficiency comparing with the transfection mediated by the commercial lipofectamine2000. Moreover, LMF method overcomes the constraint of transient expression mediated by lipofection. Meanwhile, MTT assay showed low cytotoxicity of LMF. Hence, LMF is a feasible, low cytotoxic and effective method of cell transfection.
Animals ; Cations ; Cell Line ; DNA ; Genetic Vectors ; Kidney ; cytology ; Liposomes ; Magnetics ; Nanoparticles ; Swine ; Transfection