RESUMO
Objective: To summarize the characteristics of pregnant women with critical congenital heart disease, and to explore continuous, integrated, multidisciplinary management for this segment of population. Methods: The clinical records of pregnant women with severe congenital heart disease with a history of intensive care who were treated in Guangdong Provincial People's Hospital from January 1, 2008 to December 31, 2020 were retrospectively analyzed. Results: (1) A total of 132 cases were included, including 128 pregnant women [gestational age (28.0±8.8) weeks] and 4 puerpera cases (6-32 days postpartum), 63.6% (84/132) from economic underdeveloped rural areas, and 78.0% (103/132) by the municipal hospital, irregular prenatal examination accounted for 59.1% (78/132). The main type of congenital heart disease was shunt lesion (55.3%, 73/132). 90.9% (120/132) with mWHO risk classification stage â £ were assigned to it. The main cardiovascular complication was pulmonary hypertension (64.4%, 85/132). 46.2% (61/132) of the patients had been diagnosed with congenital heart disease before pregnancy, and 70.5% (93/132) of the patients had not received any treatment before pregnancy. (2) All patients received obstetric-led, multidisciplinary care. The rescue success rate was 96.2% (127/132), and no serious obstetric complications occurred. The mortality within 24 hours after discharge was 3.8% (5/132). 16.7% (22/132) underwent cardiac surgery during pregnancy, of which 77.3% (17/22) continued their pregnancy beyond 34 weeks. Totally, the delivery week was (30.5±8.6) weeks, and the main mode was cesarean section (71.2%, 94/132). The average weight of 99 live births (including 1 twin pregnancy) was (2 167±698) g. Preterm birth, fetal growth restriction, and congenital malformations were the main fetal comorbidities. Conclusions: Pregnant women with severe congenital heart disease mainly come from areas with underdeveloped economic and medical levels. Later disease intervention, pregnancy retention despite of clear pregnancy contraindications are the distinctive features, which leaded to a significant increase of incidence of maternal and fetal complications, and an increase of the consumption of medical resources. Multidisciplinary active treatment and cardiac surgery during pregnancy could relatively improve maternal and fetal pregnancy outcomes.
Assuntos
Cardiopatias Congênitas , Resultado da Gravidez , Humanos , Feminino , Gravidez , Cardiopatias Congênitas/terapia , Cardiopatias Congênitas/complicações , Estudos Retrospectivos , China/epidemiologia , Adulto , Recém-Nascido , Idade Gestacional , Complicações Cardiovasculares na Gravidez/terapia , Complicações Cardiovasculares na Gravidez/epidemiologia , Cesárea/estatística & dados numéricos , Hipertensão Pulmonar/terapia , Hipertensão Pulmonar/epidemiologiaRESUMO
AIM: To assess the feasibility of applying field-of-view (FOV) optimised and constrained undistorted single-shot (FOCUS) diffusion-weighted imaging (DWI) in the thyroid gland by comparing its image quality with conventional DWI (C-DWI) qualitatively and quantitatively using a dedicated surface coil exclusively designed for the thyroid gland at 3 T magnetic resonance imaging (MRI). MATERIALS AND METHODS: In this prospective study, 32 healthy volunteers who had undergone 3 T the thyroid gland MRI with FOCUS-DWI and C-DWI were enrolled. Two independent reviewers assessed the overall image quality, artefacts, sharpness, and geometric distortion based on a five-point Likert scale. The signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), and apparent diffusion coefficient (ADC) were quantified for both sequences. Interobserver agreement, qualitative scores, and quantitative parameters were compared between two sequences. RESULTS: Agreement between the two readers was good for FOCUS-DWI (κ = 0.714-0.778) and moderate to good for C-DWI (κ = 0.525-0.672) in qualitative image quality assessment. Qualitatively, image quality (overall image quality, artefacts, sharpness, and geometric distortion) was significantly better in FOCUS-DWI than that in the C-DWI (all p<0.05); however, quantitatively, FOCUS-DWI had significantly lower SNRs (p<0.001) and CNRs (p=0.012) compared with C-DWI. The ADC value on FOCUS-DWI was significantly higher than that on C-DWI (p<0.001). CONCLUSION: FOCUS-DWI depicted the thyroid gland with significantly better image quality qualitatively and less ghost artefacts, but had significantly lower SNR and CNR quantitatively, compared with C-DWI, suggesting that both DWI sequences have advantages and could be chosen for different purposes.
Assuntos
Imagem de Difusão por Ressonância Magnética , Glândula Tireoide , Imagem de Difusão por Ressonância Magnética/métodos , Humanos , Estudos Prospectivos , Reprodutibilidade dos Testes , Razão Sinal-Ruído , Glândula Tireoide/diagnóstico por imagemRESUMO
Objective: To explore the value of low-dose indocyanine green (ICG) fluorescence imaging in laparoscopic cholecystectomy (LC) for acute cholecystitis. Methods: Clinical data of 198 patients with acute cholecystitis and had received LC in Changzhou No.2 People's Hospital from January 2020 to September 2021 were collected. In the fluorescence group (n=97), peripheral intravenous injection of ICG was performed 15 minutes before LC, while conventional white light was applied in the control group (n=101). The efficiency of bile duct discrimination, operation time, intraoperative bleeding and postoperative complications were compared between the two groups. Results: Of the 198 patients, 86 were males and 112 females. The differences were not statisticly significant in age [52 (44, 63) vs 56 (46, 68) years, P>0.05], history of chronic inflammation [34(35.1%) vs 31(30.7%) cases, P>0.05] and other clinical baseline data between the two groups. Compared with the control group, the fluorescence group had higher efficiency of bile duct identification [18 (16,19) vs 38 (28,55) min,P<0.001], shorter operation time [45 (40,60) vs 80 (65,100) min,P<0.001], less intraoperative bleeding [10 (5,15) vs 60 (20,100) ml,P<0.001], and less postoperative liver function damage [alanine aminotransferase 35.0 (23.4,51.0) vs 98.3 (67.0,134.8)U/L,P<0.001]. In the control group, there was one case of biliary duct injury during operation, one case of postoperative biliary fistula, and one case of postoperative hemorrhage. No similar adverse event was found in fluorescence group. Conclusions: ICG fluorescence imaging can improve the efficiency of LC for patients with acute cholecystitis. It is easy to operate and has a good clinical application value.
Assuntos
Sistema Biliar , Colecistectomia Laparoscópica , Colecistite Aguda , Hepatopatias , Colecistectomia Laparoscópica/métodos , Colecistite Aguda/cirurgia , Corantes , Feminino , Humanos , Verde de Indocianina , MasculinoRESUMO
Objective: To evaluate the clinical characteristics and prognosis of gallbladder cancer (GBC) patients in China. Methods: This retrospective multicenter cohort study enrolled 3 528 consecutive GBC patients diagnosed between January 2010 to December 2017 in 15 hospitals from 10 provinces. There were 1 345 (38.12%) males and 2 183 (61.88%) females.The age of diagnosis was (63.7±10.8) years old (range: 26 to 99 years old) .There were 213 patients (6.04%) in stage 0 to â , whereas 1 059 (30.02%) in stage â ¡ to â ¢, 1 874 (53.12%) in stage â £, and 382 (10.83%) unavailable. Surgery was performed on 2 255 patients (63.92%) . Three hundred and thirty-six patients received chemotherapy or radiotherapy (9.52%; of which 172 were palliative); 1 101 (31.21%) received only supportive treatment.The patient source, treatment and surgery, pathology, concomitant gallstone, and prognosis were analyzed. Results: Among the 3 528 GBC patients, 959 (27.18%) were from East China, 603 (17.09%) from East-North China, 1 533 (43.45%) from Central China, and 433(12.27%) from West China. Among the 1 578 resectable tumor, 665 (42.14%) underwent radical surgery, 913 (57.86%) underwent surgery that failed to follow the guidelines.Eight hundred and ninety-one (56.46%) patients were diagnosed before surgery, 254 (16.10%) during surgery, and 381 (24.14%) after surgery (time point of diagnosis couldn't be determined in 52 patients) .Among the 1 578 patients with resectable tumor, 759 (48.10%) had concomitant gallstone.Among the 665 patients underwent radical surgery, 69 (10.4%) showed positive resection margin, 510 (76.7%) showed negative resection margin, and 86 (12.9%) unreported margin status.The 5-year overall survival rate (5yOS) for the 3 528-patient cohort was 23.0%.The 5yOS for patients with resectable tumor was 39.6%, for patients with stage â £B tumor without surgery was 5.4%, and for patients with stage â £B tumor underwent palliative surgery was 4.7%. Conclusions: More than half GBC patients in China are diagnosed in stage â £.Curative intent surgery is valuable in improving prognosis of resectable GBC.The treatment of GBC needs further standardization.Effective comprehensive treatment for GBC is in urgent need.
Assuntos
Neoplasias da Vesícula Biliar/terapia , Adulto , Idoso , Idoso de 80 Anos ou mais , China , Feminino , Neoplasias da Vesícula Biliar/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Prognóstico , Estudos RetrospectivosRESUMO
The new allele A*02:355 differs from A* 02:03:01 at positions 98 (TâA) and 102(AâC) resulting in an amino acid exchange F9âT. Interallelic sequence exchange is more likely the mechanism of its origination. The amino acid replacement influences the HLA peptide binding cleft and might have significant functional effects.
Assuntos
Alelos , Substituição de Aminoácidos , Antígeno HLA-A2/genética , Mutação , Povo Asiático , Sequência de Bases , Éxons , Expressão Gênica , Antígeno HLA-A2/imunologia , Transplante de Células-Tronco Hematopoéticas , Teste de Histocompatibilidade , Humanos , Análise de Sequência de DNA , Doadores de TecidosRESUMO
Objective: To evaluate the efficacy of non-invasive prenatal screening (NIPS) in the detection of fetal aneuploidies. Methods: Cell free DNA was sequenced in 5 566 pregnant women to identify the fetal aneuploidies in the First Affiliated Hospital of Zhengzhou University from January 1(st), 2015 to March 15(th), 2016. Among them, 5 230 (93.96%, 5 230/5 566) were singleton pregnancies and 336 (6.04%, 336/5 566) were twin pregnancies. In singleton pregnancies, 1 809 (34.59%, 1 809/5 230) were women with advanced maternal age, and 3 421 (65.41%, 3 421/5 230) were young women. The positive results of NIPS were validated by karyotyping through invasive procedures and neonatal outcomes were followed up by telephone. Results: Among the 5 566 women, 69 (1.24%, 69/5 566) got positive NIPS results, with 66 in singleton pregnancies and 3 in twin pregnancies. Two were monochorionic diamniotic twins and 1 was dichorionic twin pregnancy. The positive predictive value of NIPS for trisomy 21, 18 and 13 were 100.0%, 90.9% and 100.0%, and was 55.6% for sex chromosome aneuploidies. There was no false negative case found during the follow-up. In the advanced maternal age group and young women group, the prevalence rates of fetal chromosomal aneuploidies were 1.11%(20/1 809) and 0.94%(32/3 421), respectively. In the young women with soft markers in fetal ultrasound, the prevalence of fetal chromosomal aneuploidies was 1.44% (7/487), and in serum high risk women, it was 0.94% (7/747). In women with the serum screening risk with cut-off value, 0.89%(9/1 016) had fetal aneuploidies, and the prevalence was 0.77%(9/1 171) in volunteers. There was no statistically significant difference among these groups (P=0.636). Conclusions: There is no difference in the detection rate of fetal aneuploidies between high-risk women in serum screening and volunteers in NIPS. NIPS is more suitable as a first line screening test for women without fetal ultrasound abnormalities. It should be used carefully when there is ultrasound abnormalities.
Assuntos
Aneuploidia , Testes para Triagem do Soro Materno , Diagnóstico Pré-Natal/métodos , Ultrassonografia Pré-Natal/métodos , Adulto , Cromossomos Humanos Par 18 , Síndrome de Down/diagnóstico , Feminino , Feto , Humanos , Cariotipagem , Idade Materna , Gravidez , Gravidez Múltipla , Gravidez de Gêmeos , Cuidado Pré-Natal , Trissomia/diagnósticoRESUMO
A*02:512 differs from A*02:01:01:01 by one nucleotide at nt 506.
Assuntos
Alelos , Antígeno HLA-A2/genética , Mutação Puntual , Povo Asiático , Sequência de Bases , Transplante de Medula Óssea , Códon , Éxons , Genótipo , Antígeno HLA-A2/imunologia , Teste de Histocompatibilidade , Humanos , Dados de Sequência Molecular , Alinhamento de Sequência , Análise de Sequência de DNA , Doadores de TecidosRESUMO
The new A*29:49 differs from A*29:01:01:01 by one nucleotide at nt 368.
Assuntos
Alelos , Antígenos HLA-A/genética , Sequência de Bases , Éxons/genética , Humanos , Dados de Sequência Molecular , Alinhamento de SequênciaRESUMO
A*31:65: one nucleotide change resulting in a new motif CAC at codon 84 in HLA-A.
Assuntos
Alelos , Povo Asiático/genética , Antígenos HLA-A/genética , Teste de Histocompatibilidade , Doadores de Tecidos , Sequência de Bases , China , Éxons/genética , Humanos , Dados de Sequência Molecular , Alinhamento de SequênciaRESUMO
The new allele DRB1*03:80 has a single nucleotide change at position 239(CâG) in exon 2 from the closest matching allele DRB1*03:06.
Assuntos
Alelos , Cadeias HLA-DRB1/genética , Mutação Puntual , Povo Asiático/genética , Sequência de Bases , Transplante de Medula Óssea , Éxons , Cadeias HLA-DRB1/imunologia , Teste de Histocompatibilidade , Humanos , Dados de Sequência Molecular , Doadores de TecidosRESUMO
B*35:189: one nucleotide change resulting in a new motif GGG at codon 35 in HLA-B.
Assuntos
Alelos , Antígenos HLA-B/genética , Motivos de Nucleotídeos , Polimorfismo de Nucleotídeo Único , Substituição de Aminoácidos , Povo Asiático , Códon , Éxons , Antígenos HLA-B/imunologia , Teste de Histocompatibilidade , Humanos , Dados de Sequência Molecular , Análise de Sequência de DNA , Homologia de Sequência do Ácido Nucleico , Doadores de TecidosRESUMO
Syphilis is a sexually transmitted infection caused by the Treponema pallidum subspecies pallidum spirochaete bacterium. The killer immunoglobulin-like receptor (KIR) gene family encodes cell surface receptors that are found on natural killer (NK) cells and certain T-cell subsets. NK cells are fast-acting effector lymphocytes of innate immunity that respond to infection. The activity of NK cells depends on the dynamic balance of activating and inhibitory signals that are transmitted through respective receptors including KIRs. KIR2DS4 is the only activating KIR gene in KIR haplotype A. KIR1D is a partial deletion KIR2DS4 variant encoding protein devoid of transmembrane region. Up to now, there is no knowledge of association of KIR2DS4 and its variant KIR1D with syphilis in a population that belongs to KIR gene haplotype A. Polymerase chain reaction with sequence-specific primers (PCR-SSP) method was used to genotype KIR genes in 190 patients with syphilis and 192 healthy controls. The gene frequencies of KIR2DS4 and KIR1D were analysed for the association with syphilis in patients and healthy controls who belong to KIR gene haplotype A. The gene frequency of KIR1D/KIR1D in patients with syphilis classified as haplotype A was 16.85% and was significantly higher than that in the control group (6.59%) (P = 0.032). However, there was no significant difference for the gene frequencies of KIR2DS4/KIR2DS4 and KIR2DS4/KIR1D between the two groups (P > 0.05). KIR1D/KIR1D was found in association with susceptibility to syphilis in the Chinese Han population that belongs to KIR gene haplotype A.
Assuntos
Povo Asiático/genética , Receptores KIR/genética , Sífilis/genética , Adulto , Estudos de Casos e Controles , Feminino , Frequência do Gene , Técnicas de Genotipagem , Haplótipos , Humanos , Masculino , Pessoa de Meia-Idade , Fenótipo , Polimorfismo Genético , Sífilis/etnologia , Treponema pallidum/patogenicidade , Adulto JovemRESUMO
Ferromagnetic La5/8Ca3/8MnO3 (LCMO) and Ferroelectric ErMnO3 (EMO) multilayer thin films with sandwich structure (LCMO/EMO/LCMO) were grown on (LaAlO3)0.3(Sr2AlTaO6)0.7 (001) [LSAT (001)] substrates by pulsed laser deposition (PLD) method. For these films, the structural characterization was carried out by X-ray diffraction (XRD), and the temperature-dependence resistivity (p-T) showing the metal-insulator transition (Tp) also was measured. In the multilayer thin films the LCMO (002) peak move to lower Bragg angles after annealing at 900 degrees C for 30 hours under 1atm Oxygen pressure, and this condition is much different from the LCMO single layer films where the (002) peak moves to higher Bragg angle after annealing due to the lattice mismatch between the LCMO layer and the substrate. By increasing the thickness of LCMO, the multilayer samples show two MR peaks in a wide temperature range during the process of M-l transition. This phenomenon is attributed to a new (La5/8Ca3/8)xEr(1-x)MnO3 layer produced by the solubility between LCMO and EMO layers after high-temperature annealing. In this paper, we provide some evidence of dissolution between LCMO and EMO layers, and discuss the influence on structure and electronic transport properties in the composite thin films by annealing.
RESUMO
A novel human leukocyte antigen (HLA)-B allele, B*5535, has been identified in a Chinese individual by sequence-based typing, which has seven nucleotide changes from the closest matching allele B*5502 resulting in two amino acids changes: 69 Glu-->Met; 70 Glu-->Ala.
Assuntos
Alelos , Povo Asiático/genética , Sequência de Bases , Antígenos HLA-B/genética , Alanina/metabolismo , Substituição de Aminoácidos , Códon , Primers do DNA , Éxons , Ácido Glutâmico/genética , Haplótipos , Humanos , Metionina/metabolismo , Dados de Sequência Molecular , Técnicas de Amplificação de Ácido Nucleico , Reação em Cadeia da Polimerase , Polimorfismo Genético , Análise de Sequência de DNARESUMO
A novel human leukocyte antigen B allele, B*9552, has been identified by sequence-based typing in a donor of Chinese Marrow Donor Program, which has one nucleotide change at position 272 (C-->A) in exon 2 from the closest matching allele B*15010101, resulting in an amino acid substitution from Ser to Tyr at codon 91.
Assuntos
Alelos , Antígenos HLA-B/genética , Doadores de Tecidos , Substituição de Aminoácidos , Sequência de Bases , Células da Medula Óssea , China , Antígeno HLA-B15 , Humanos , Dados de Sequência Molecular , Reação em Cadeia da Polimerase , Análise de Sequência de DNA , Homologia de Sequência do Ácido NucleicoRESUMO
A novel HLA-B allele, B*4096, has been identified in a Chinese individual by sequence-based typing, which has seven nucleotide changes from the closest matching allele B*40060101 resulting in five amino acid changes: 101Ser-->Asn; 104Ser-->Thr; 105Leu-->Ala; 106Arg--> Leu and 107Gly-->Arg.
Assuntos
Povo Asiático/genética , Antígenos HLA-B/genética , Teste de Histocompatibilidade , Alelos , Substituição de Aminoácidos/genética , Sequência de Bases , Teste de Histocompatibilidade/métodos , Humanos , Dados de Sequência Molecular , Polimorfismo de Nucleotídeo Único , Análise de Sequência de DNA/métodos , Homologia de Sequência do Ácido NucleicoRESUMO
A novel human leukocyte antigen DRB1 allele, DRB1*1219, has been identified in a Chinese leukaemia patient and his family by polymerase chain reaction sequence-based typing, which has one nucleotide change at position 341 (C-->T) in exon 2 from the closest matching allele DRB1*120201, resulting in an amino acid substitution from Ala-->Val at codon 85.