RESUMO
OBJECTIVE: To determine whether ultrasonic manifestations of Hashimoto's thyroiditis (HT) related to embryo qualities or pregnancy outcomes in women with thyroid autoimmunity (TAI) undergoing in vitro fertilization/intracytoplasmic sperm injection. METHODS: Our study was a retrospective cohort study. A total of 589 euthyroid women enrolled from January 2017 to December 2019. 214 TAI women and 375 control women were allocated in each group according to serum levels of thyroid peroxidase antibodies (TPOAb) and/or anti-thyroglobulin antibodies (TgAb). Basal serum hormone levels and thyroid ultrasound were assessed, embryo qualities, pregnancy outcomes were collected from medical records. Diagnosis of thyroid ultrasound was used for subanalysis. Logistic regression was used to evaluate outcomes of embryo development and pregnancy. RESULTS: Implantation rate was significantly lower in euthyroid women with TAI compared with control group (TAI group: 65.5% vs. Control group: 73.0%, adjusted OR (95% CI): 0.65 (0.44, 0.97), p = 0.04). We further stratified TAI group into two groups: one group with HT features under ultrasound and another group with normal thyroid ultrasound. After regression analysis, TAI women with HT morphological changes had a lower chance of implantation compared with control group (TAI group with HT: 64.1% vs. Control group: 73.0%, adjusted OR (95% CI): 0.63 (0.41, 0.99), p = 0.04), while there was no significant difference on implantation rate between TAI women with normal thyroid ultrasound and control group. Other outcomes, such as embryo qualities and pregnancy rate, were comparable between TAI and control groups. CONCLUSIONS: A higher risk of implantation failure was seen among euthyroid women with TAI, especially women with HT morphological changes under ultrasound. The underlying mechanisms of implantation failure among euthyroid HT patients need further research.
Assuntos
Implantação do Embrião , Injeções de Esperma Intracitoplásmicas , Glândula Tireoide , Ultrassonografia , Humanos , Feminino , Adulto , Gravidez , Estudos Retrospectivos , Glândula Tireoide/diagnóstico por imagem , Glândula Tireoide/imunologia , Fertilização in vitro , Doença de Hashimoto/sangue , Doença de Hashimoto/diagnóstico por imagem , Doença de Hashimoto/imunologia , Taxa de Gravidez , Autoanticorpos/sangue , Resultado da Gravidez , AutoimunidadeRESUMO
Phospholipase C (PLC) has important biological functions in specific cancer types, immune disorders and neurodegeneration. Here, an ultrasensitive electrochemical sensor for PLC was developed via signal amplification based on breathing atom transfer radical polymerization (ATRP). First, phosphatidylethanolamine (PE) was immobilized on the surface of a gold electrode by L-cysteine and cross-linker. Then, PE was specially hydrolyzed by PLC to obtain the phosphate groups and tethered with the ATRP initiator α-bromophenacetic acid (BPAA) by the coordination action of Zr4+. After the breathing ATRP, a large number of electroactive monomers (ferrocenylmethyl methacrylate, FcMMA) were successfully grafted from BPAA. The experimental results indicated that the detection signal of the obtained electrode (sensor) was proportional to the concentration of PLC. The sensor showed a low detection limit of 0.270 U L-1 and a wide linear range of 1-40 U L-1 (R2 = 0.997). Most importantly, the sensor was successfully applied to detect PLC in breast cancer cells (MCF-7, MDA-MB-231) and nontumor cells (MCF-10A). The value obtained by our electrochemical sensor had no obvious difference from that determined by the commercial ELISA kit. These results showed that the fabricated PLC sensor had acceptable potential in clinical applications.
Assuntos
Técnicas Biossensoriais , DNA , DNA/análise , Polimerização , Técnicas Biossensoriais/métodos , Limite de Detecção , Eletrodos , Técnicas Eletroquímicas/métodosRESUMO
Aim: To assess baseline histogram parameters from apparent diffusion coefficient (ADC) images in predicting early treatment response in newly diagnosed multiple myeloma (NDMM) patients. Methods: The histogram parameters of lesions in 68 NDMM patients were obtained with the Firevoxel software. The presence of deep response after two cycles of induction was recorded. Results: Some parameters were significantly different between the two groups, for example, ADC 75% in lumbar spine (p = 0.026). No significant difference in mean ADC for any anatomic site was found (all p > 0.05). The combination of ADC 75, ADC 90 and ADC 95% in lumbar spine; ADC skewness and ADC kurtosis in rib achieved a sensitivity of 100% in predicting deep response. Conclusion: Histogram analysis of ADC images can describe NDMM heterogeneity and accurately predict treatment response.
Assuntos
Mieloma Múltiplo , Humanos , Mieloma Múltiplo/diagnóstico por imagem , Mieloma Múltiplo/terapia , Interpretação de Imagem Assistida por Computador/métodos , Imagem de Difusão por Ressonância Magnética/métodos , Imageamento por Ressonância Magnética , Software , Estudos RetrospectivosRESUMO
Co-exposure to heavy metal and antibiotic pollution might result in complexation and synergistic interactions, affecting rice growth and further exacerbating pollutant enrichment. Therefore, our study sought to clarify the influence of different Tetracycline (TC) and Cadmium(Cd) concentration ratios (both alone and combined) on rice growth, pollutant accumulation, and transportation during the tillering stage in hydroponic system. Surprisingly, our findings indicated that the interaction between TC and Cd could alleviate the toxic effects of TC/Cd on aerial rice structures and decrease pollutant burdens during root elongation. In contrast, TC and Cd synergistically promoted the accumulation of TC/Cd in rice roots. However, their interaction increased the accumulation of TC in roots while decreasing the accumulation of Cd when the toxicant doses increased. The strong affinity of rice to Cd promoted its upward transport from the roots, whereas the toxic effects of TC reduced TC transport. Therefore, the combined toxicity of the two pollutants inhibited their upward transport. Additionally, a low concentration of TC promoted the accumulation of Cd in rice mainly in the root tip. Furthermore, a certain dose of TC promoted the upward migration of Cd from the root tip. Laser ablation-inductively coupled plasma mass spectrometry demonstrated that Cd mainly accumulated in the epidermis and stele of the root, whereas Fe mainly accumulated in the epidermis, which inhibited the absorption and accumulation of Cd by the rice roots through the generation of a Fe plaque. Our findings thus provide insights into the effects of TC and Cd co-exposure on rice growth.
Assuntos
Poluentes Ambientais , Compostos Heterocíclicos , Oryza , Cádmio/toxicidade , Tetraciclina , AntibacterianosRESUMO
BACKGROUND. The recently released Myeloma Response Assessment and Diagnosis System (MY-RADS) for multiple myeloma (MM) evaluation using whole-body MRI (WB-MRI) describes the total burden score. However, assessment is confounded by red bone marrow hyperplasia in anemia. OBJECTIVE. The purpose of this study is to assess the utility of the MY-RADS total burden score, ADC, and fat fraction (FF) from WB-MRI in predicting early treatment response in patients with newly diagnosed MM and to compare the utility of these measures between patients with and without anemia. METHODS. This retrospective study included 56 patients (40 men, 16 women; mean age, 57.4 ± 9.6 [SD] years) with newly diagnosed MM who underwent baseline WB-MRI including DWI and modified Dixon sequences. Two radiologists recorded total burden score using MY-RADS and measured the ADC and FF of diffuse and focal disease sites. Mean values across sites were derived. Interobserver agreement was evaluated, and the mean assessments of the readers were used for further analyses. Presence of deep response after four cycles of induction chemotherapy was recorded. Patients were classified as having anemia if their hemoglobin level was less than 100 g/L. The utility of WBMRI parameters in predicting deep response was assessed. RESULTS. A total of 24 of 56 patients showed deep response, and 25 of 56 patients had anemia. Interobserver agreement, which was expressed using intraclass correlation coefficients, ranged from 0.95 to 0.99. Among patients without anemia, those with deep response compared with those without deep response had a lower total burden score (9.0 vs 18.0), a lower ADC (0.79 × 10-3 mm2/s vs 1.08 × 10-3 mm2/s), and a higher FF (0.21 vs 0.10) (all p < .001). The combination of these three parameters (optimal cutoffs: ≤ 15 for total burden score, ≤ 0.84 × 10-3 mm2/s for ADC, and > 0.16 for FF) achieved sensitivity of 93.8%, specificity of 93.3%, and accuracy of 93.5% for predicting deep response. In patients with anemia, none of the three parameters were significantly different between patients with and without deep response (all p > .05), and the combination of parameters achieved sensitivity of 56.3%, specificity of 100.0%, and accuracy of 72.0%. CONCLUSION. Low total burden score, low ADC, and high FF from WB-MRI may predict deep response in patients with MM, although only among those without anemia. CLINICAL IMPACT. WB-MRI findings may help guide determination of prognosis and initial treatment selection in MM.
Assuntos
Anemia/complicações , Imageamento por Ressonância Magnética/métodos , Mieloma Múltiplo/diagnóstico por imagem , Mieloma Múltiplo/patologia , Sistemas de Informação em Radiologia , Imagem Corporal Total/métodos , Tecido Adiposo/diagnóstico por imagem , Efeitos Psicossociais da Doença , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Mieloma Múltiplo/complicações , Valor Preditivo dos Testes , Estudos Retrospectivos , Resultado do TratamentoRESUMO
Photo racemization of 2,2'-dihydroxy-1,1'-binaphthyl (BINOL) and its monomethyl ether, monobutyl ether, and dimethyl ether was studied by means of circularly dichroism spectra, chiral HPLC, and theoretical calculations of rotation energy barriers. Racemization was fastest for BINOL and about one seventh as fast for the monomethyl and monobutyl ethers while it was too slow to be detected for the dimethyl ether under the present conditions.
Assuntos
Naftalenos , Cromatografia Líquida de Alta Pressão , EstereoisomerismoRESUMO
A novel series of graveolinine derivatives were synthesized and evaluated as potential anti-Alzheimer agents. Compound 5f exhibited the best inhibitory activity for acetylcholinesterase (AChE) and had surprisingly potent inhibitory activity for butyrylcholinesterase (BuChE), with IC50 values of 0.72⯵M and 0.16⯵M, respectively. The results from Lineweaver-Burk plot and molecular modeling study indicated non-competitive inhibition of AChE by compound 5f. In addition, these derivatives showed potent self-induced ß-amyloid (Aß) aggregation inhibition. Moreover, 5f didn't show obvious toxicity against PC12 and HepG2 cells at 50⯵M. Finally, in vivo studies confirmed that 5f significantly ameliorates the cognitive performances of scopolamine-treated ICR mice. Therefore, these graveolinine derivatives should be thoroughly and systematically studied for the treatment of Alzheimer's disease.
Assuntos
Doença de Alzheimer/tratamento farmacológico , Inibidores da Colinesterase/farmacologia , Metoxaleno/análogos & derivados , Acetilcolinesterase/metabolismo , Doença de Alzheimer/metabolismo , Peptídeos beta-Amiloides/antagonistas & inibidores , Animais , Comportamento Animal/efeitos dos fármacos , Butirilcolinesterase/metabolismo , Sobrevivência Celular/efeitos dos fármacos , Inibidores da Colinesterase/síntese química , Inibidores da Colinesterase/química , Relação Dose-Resposta a Droga , Electrophorus , Células Hep G2 , Cavalos , Humanos , Masculino , Metoxaleno/síntese química , Metoxaleno/química , Metoxaleno/farmacologia , Camundongos , Estrutura Molecular , Células PC12 , Fragmentos de Peptídeos/antagonistas & inibidores , Ratos , Relação Estrutura-AtividadeRESUMO
BACKGROUND: The incidence of papillary thyroid carcinoma (PTC) has been increasing worldwide in recent years. Therefore, novel potential therapeutic targets for PTC are urgently needed. Enhancer of zeste homolog 2 (EZH2), a methyltransferase belonging to PRC2, plays important roles in epigenetic silencing and cell cycle regulation. EZH2 overexpression has been found in several malignant tumor tissues, while its expression and function in PTC are largely unknown. METHODS: Sixty-five cases of PTC tissue confirmed by pathology and 30 cases of normal thyroid tissue adjacent to PTC tissue were collected from patients undergoing surgical treatment, between February 2003 and February 2006. We investigated the clinic pathologic significance of EZH2 expression using Realtime-PCR and IHC in 65 human PTC tissues and 30 normal thyroid tissue samples. The EZH2 expression in human PTC cell lines (K1 and W3) and the normal thyroid follicular epithelial cell line Nthy-ori 3-1 was analyzed by Western blotting and Realtime PCR. The expressions of ERα and ERß in cell lines were analyzed by Realtime PCR.The tumor cell biological behavior was evaluated by CCK8 assay, colony formation assay, transwell migration assay and xenograft tumors model. RESULTS: Higher rate of EZH2 expression was found in PTC tissues than in normal thyroid tissues, EZH2 expression is associated with lymph node metastasis and recurrent. Inhibition of EZH2 in PTC cell lines downregulates cellular proliferation and migration. PTC is a disease with high incidence of female and E2-ERα upregulates EZH2 expression. CONCLUSIONS: These results suggest a potential role of EZH2 for the PTC growth and metastasis. As a novel therapy, a pharmacological therapy targeting EZH2 has full potential in treatment of PTC.
Assuntos
Proteína Potenciadora do Homólogo 2 de Zeste/genética , Receptor alfa de Estrogênio/metabolismo , Regulação Neoplásica da Expressão Gênica , Câncer Papilífero da Tireoide/genética , Câncer Papilífero da Tireoide/metabolismo , Adulto , Idoso , Animais , Estudos de Casos e Controles , Linhagem Celular Tumoral , Movimento Celular , Proliferação de Células , Modelos Animais de Doenças , Proteína Potenciadora do Homólogo 2 de Zeste/metabolismo , Feminino , Xenoenxertos , Humanos , Imuno-Histoquímica , Masculino , Camundongos , Pessoa de Meia-Idade , Metástase Neoplásica , Estadiamento de Neoplasias , Câncer Papilífero da Tireoide/patologia , Carga TumoralRESUMO
BACKGROUND: Triglycerides (TG) to high-density lipoprotein cholesterol (HDL-C) ratio (TG/HDL-C) has been recommended as a surrogate marker for insulin resistance. In the present study, we aimed to investigate the relationship between TG/HDL-C and NAFLD in an apparently healthy population. METHODS: A total of 18,061 subjects who participated in a health checkup program were included. NAFLD was diagnosed by ultrasonography. RESULTS: The prevalence rate of NAFLD was 24.8% in the whole population, and progressively increased across the quartiles of TG/HDL-C (4.9, 14.1, 26.8 and 53.5%, respectively, P < 0.001). After adjustment for confounding factors, TG/HDL-C was independently associated with the risk of NAFLD. Compared with the first quartile of TG/HDL-C (Q1), the odds ratios (95% confidence intervals) for NAFLD in the increasing quartiles (Q2-Q4) were 2.1(1.8-2.6), 3.6 (3.0-4.3) and 9.2(7.6-11.1), respectively. In addition, the area under receiver operator characteristic curve (95% confidence interval) of TG/HDL-C for NAFLD was 0.85 (0.84-0.86) in women and 0.79 (0.78-0.80) in men, significantly higher than that of TG, TC, LDL-C, HDL-C, ALT and AST (P < 0.05). The optimal cutoff point of TG/HDL-C for detection of NAFLD was 0.9 in women (sensitivity = 78.8%, specificity = 77.3%) and 1.4 in men (sensitivity = 70.7%, specificity = 73.5%). CONCLUSIONS: TG/HDL-C is independently associated with NAFLD in apparently healthy individuals and may be used as a surrogate for NAFLD.
Assuntos
HDL-Colesterol/sangue , Hepatopatia Gordurosa não Alcoólica/sangue , Triglicerídeos/sangue , Adulto , Biomarcadores/sangue , Índice de Massa Corporal , Estudos Transversais , Feminino , Humanos , Resistência à Insulina , Masculino , Pessoa de Meia-Idade , Hepatopatia Gordurosa não Alcoólica/diagnósticoRESUMO
OBJECTIVE: We aimed to investigate the six susceptibility loci of GD identified from European population in Chinese Han population and further to estimate the genetic heterogeneity of them in stratification of our GD patients. DESIGN: Dense mapping studies based on GWAS. PATIENTS: A total of 1536 GD patients and 1516 controls in GWAS stage and 1994 GD patients and 2085 controls and 5033 GD patients and 5389 controls in two replication stages. MEASUREMENTS: Based on our previous GWAS data, independently GD-associated SNPs in each region were identified by TagSNP analysis and logistic regression analysis. The association of these SNPs was investigated in 1994 GD patients and 2085 controls, and then, the significantly associated SNPs (P < 0.05) were further genotyped in a second cohort including 5033 GD patients and 5389 controls. RESULTS: After the first replication stage, four SNPs from three regions with Pfirst < 0.05 were further selected and genotyped in another independent cohort. The association of two SNPs with GD was confirmed in combined Chinese cohorts: rs12575636 at 11q21 (Pcombined = 7.55 × 10-11 , OR = 1.27) and rs1881145 in TRIB2 at 2p25.1 (Pcombined = 5.59 × 10-8 , OR = 1.14). Further study disclosed no significant difference for these SNPs between GD subsets. However, eQTL data revealed that SESN3 could be a potential susceptibility gene of GD in 11q21 region. CONCLUSIONS: Out of the six susceptibility loci of GD identified from European population, two risk loci were confirmed in a large Chinese Han population. There is variability in GD genetic susceptibility in different ethnic groups. SESN3 is a potential susceptible gene of GD in 11q21.
Assuntos
Doença de Graves/epidemiologia , Doença de Graves/genética , Adulto , Povo Asiático/genética , Estudos de Casos e Controles , Feminino , Predisposição Genética para Doença/genética , Estudo de Associação Genômica Ampla , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único/genética , Adulto JovemRESUMO
OBJECTIVE: To explore the patterns of mediastinal lymph node metastases and prognostic factors of recurrence in patients undergoing curative resection of stage IIIA-N2 non-small cell lung cancer (NSCLC). METHODS: A total of 92 patients underwent curative operation and pathologically diagnosed as stage IIIA-N2 NSCLC were retrospectively reviewed. The clinicopathological data were compared between the recurrence and non-recurrence groups. And the potential prognostic factors were included for multivariate analysis using Cox proportional hazard model. RESULTS: The 3 and 5-year recurrence rates were 61.0% and 70.2% respectively. For univariate analysis, the prognostic factors were number of metastatic lymph nodes, positive lymph node ratio, number of metastatic mediastinal lymph nodes (MLN), positive MLN ratio, number of MLN metastasis > 3, multiple station metastasis, trans-regional metastasis and multi-zonal metastasis. A multivariate analysis using Cox regression identified 2 independent factors of prognosis: trans-regional MLN metastasis (P = 0.035) and number of MLN metastasis >3 (P = 0.045). The recurrence risk of patients with trans-regional MLN metastasis was 2.0 times higher than those with regional MLN metastasis while the recurrence risk of patients with number of MLN metastasis >3 was 2.2 times higher than those with number of MLN metastasis of 1-3. CONCLUSION: Recurrence risk of stage IIIA-N2 non-small cell lung cancer (NSCLC) after curative resection may be estimated by location and number of MLN metastasis. And the subgroup with trans-regional MLN metastasis and number of MLN metastasis >3 carries the highest risk of recurrence.
Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Linfonodos , Metástase Linfática , Mediastino , Análise Multivariada , Estadiamento de Neoplasias , Período Pós-Operatório , Prognóstico , Modelos de Riscos Proporcionais , Recidiva , Estudos Retrospectivos , Fatores de RiscoRESUMO
Titanacyclopentadienes, prepared from [Cp2TiBu2] and either two equivalents of an alkyne or a diyne, were treated with PMe3 (3â equiv) at 50 °C for 3â h and then with azobenzene at room temperature for 12â h to give 4,5,6-trisubstituted indene derivatives with the loss of one substituent in good yields. This reaction contrasts sharply with our previously reported reaction for the formation of 4,5,6,7-tetrasubstituted indene derivatives without the loss of substituents by the treatment of titanacyclopentadienes with azobenzene without PMe3. (13)Câ NMR spectroscopy of the product derived from a (13)C-enriched complex revealed that the five carbon atoms originating from a Cp ligand were arranged linearly in the trisubstituted indene derivatives, in contrast to the 4,5,6,7-tetrasubsituted indene derivatives, in which the corresponding five carbon atoms are arranged in a ring.
Assuntos
Ciclopentanos/química , Titânio/química , Espectroscopia de Ressonância Magnética Nuclear de Carbono-13 , Ligantes , Estrutura MolecularRESUMO
OBJECTIVE: Associations between IL2RA and various autoimmune diseases have been reported in Caucasians. We investigated whether genetic polymorphisms at the IL2RA locus were associated with Graves' disease (GD) in the Chinese Han population. DESIGN: We performed a genome-wide association study (GWAS) in 1 536 GD patients and 1 516 controls. The 1000 Genomes Project data were adopted as references for imputation analysis. After forward and conditional logistic regressions, we found that rs11256313 was the major risk variant in the CD25/IL2RA region. Thus, we further genotyped rs11256313 in a replication cohort with 3 694 GD patients and 3 510 controls using ABI 7900HT TaqMan Real-Time PCR System. RESULTS: Nine single nucleotide polymorphisms (SNPs) in the IL2RA block were nominally associated with GD in our GWAS (0·01 < P < 0·05). After imputation analysis, 13 imputed SNPs in the IL2RA block were weakly associated with GD (P ≤ 0·05). Logistic regression analysis suggested that the imputed rs11256313 could represent the IL2RA block (P = 0·003). However, we failed to replicate the association of rs11256313 in a larger cohort (P = 0·145). A subphenotype analysis of rs11256313 on thyroid hormone receptor antibody (TRAb) and gender showed that there was no association in any of the subphenotype groups (P > 0·05). CONCLUSIONS: The results suggested that common genetic polymorphisms at IL2RA do not exert a significant genetic effect on the development of GD in the Chinese Han population. Previously reported associations between CD25/IL2RA and autoimmune diseases including GD in Caucasians again imply that heterogeneity exists in different ethnic populations.
Assuntos
Doença de Graves/genética , Subunidade alfa de Receptor de Interleucina-2/genética , Povo Asiático/genética , China/epidemiologia , Etnicidade/genética , Estudo de Associação Genômica Ampla , Genótipo , Doença de Graves/epidemiologia , Humanos , Polimorfismo de Nucleotídeo ÚnicoRESUMO
Aflatoxin B1 (AFB1) is usually the major aflatoxin produced by toxigenic strains and has been identified the most potent natural carcinogen. Here, a SERS/fluorescence dual-mode nanosensor has been designed while gold nanoflowers (AuNFs) was used as substrate for the detection of AFB1. AuNFs exhibited excellent SERS enhancement effect as well as the good fluorescence quenching effect which made the dual signal detection possible. First, the surface of AuNFs was modified with AFB1 aptamer via Au-SH group. Then, the complementary sequence functionalized with Cy5 (the signal molecule) was attached to AuNFs based on the base complementary pairing principle. On this case, Cy5 was close to AuNFs, the SERS intensity was greatly enhanced and the fluorescence intensity was quenched. After incubation with AFB1, the aptamer was preferentially combined to its target AFB1. Thus, the complementary sequence detached from AuNFs which caused the SERS intensity of Cy5 decreased while its fluorescence effect recovered. Then, the quantitative detection was realized with two optical properties. The LOD was calculated to be 0.03 ng/mL. It was a convenient and fast detection method which expanded the application of nanomaterials based multi-signal simultaneous detection.
Assuntos
Aptâmeros de Nucleotídeos , Nanopartículas Metálicas , Aflatoxina B1/análise , Ouro/química , Aptâmeros de Nucleotídeos/química , Limite de Detecção , Nanopartículas Metálicas/químicaRESUMO
CONTEXT: Some studies have reported the early miscarriage rate is higher in polycystic ovary syndrome (PCOS) women. However, there is a lack of evidence as to whether the risk of embryo abnormalities increases in PCOS women. OBJECTIVE: This work aimed to evaluate the association between PCOS and embryo ploidy. METHODS: A secondary analysis of a multicenter, randomized controlled trial was conducted from July 2017 to June 2018. The original intent was to identify whether preimplantation genetic test for aneuploidy (PGT-A) improves the live birth rate as compared with in vitro fertilization (IVF). From 14 reproductive centers, 190 patients diagnosed with PCOS and 1:1 age-matched non-PCOS patients were chosen from a PGT-A group. A total of 380 patients with 1118 embryos were included in our study. Intervention included women diagnosed with PCOS, and the main outcome measures were embryonic aneuploidy and embryonic mosaic. RESULTS: After adjusting for potential confounders, the rate of embryonic aneuploidy and embryonic mosaic in the PCOS group were comparable with the control group (embryonic aneuploid rate PCOS group: 14.0% vs control group: 18.3%, adjusted OR [95% CI]: 0.78 [0.54, 1.12]; P = .19; embryonic mosaic rate 10.9% vs 10.1%, adjusted OR [95% CI]: 0.91 [0.59, 1.40]; P = .66). We further stratified PCOS women into 4 groups according to phenotype. The rate of aneuploid and mosaic embryos was comparable between each PCOS phenotype and control group. There was still no significant difference of embryonic aneuploid and embryo mosaic rates among the 4 phenotypes. CONCLUSION: The risk of aneuploid and mosaic embryos did not increase in PCOS women. Thus, we suggest that the miscarriage rate arising from abnormal embryonic chromosomes could be similar between PCOS and non-PCOS women.
Assuntos
Aborto Espontâneo , Síndrome do Ovário Policístico , Diagnóstico Pré-Implantação , Gravidez , Feminino , Humanos , Aborto Espontâneo/epidemiologia , Aborto Espontâneo/etiologia , Síndrome do Ovário Policístico/complicações , Síndrome do Ovário Policístico/epidemiologia , Fertilização in vitro , Testes Genéticos , Aberrações Cromossômicas , Aneuploidia , Blastocisto , Estudos RetrospectivosRESUMO
OBJECTIVE: To explore the correlations of the polymorphisms of phosphodiesterase 8B (PDE8B) gene with Hyperthyroxinemia in Chinese Han population. METHODS: A case-control study of genotype 657366 SNPs was performed by Illumina Human660-Quad BeadChips in 98 Hyperthyroxinemia patients and 1300 controls. And 25 SNPs within PDE8B gene intron 1 were used for association analyses. RESULTS: Allele frequencies of 5 SNPS in PDE8B gene intron 1 showed significant differences between the case and control groups (P < 0.05). In comparison with the control group, the genotypic distributions of rs7714529 (χ(2) = 6.430, P = 0.040), rs12514694 (χ(2) = 7.191, P = 0.027) and rs10066802 (χ(2) = 9.213, P = 0.010) in H-TSH group had significant differences. Haplotype AGTAG (rs7702192/rs7714529/rs251421/rs12514694/rs10066802) was over-represented in hyperthyrotropinemia cases versus the control group. CONCLUSION: PDE8B gene polymorphisms may be correlated with Hyperthyroxinemia in Chinese Han population. And it may provide new concepts for the treatment of thyroid dysfunction.
Assuntos
3',5'-AMP Cíclico Fosfodiesterases/genética , Hipertireoxinemia/genética , Polimorfismo de Nucleotídeo Único , Adulto , Alelos , Povo Asiático/genética , Estudos de Casos e Controles , Frequência do Gene , Predisposição Genética para Doença , Genótipo , Haplótipos , Humanos , Pessoa de Meia-IdadeRESUMO
Optically active linear polyurethane and a cyclic dimer were synthesized from 2,7-diisocyanatofluorene and 2,2'-dihydroxy-1,1'-binaphthyl. The circular dichroism (CD) spectral intensity of the polymer was amplified at a higher concentration through aggregate formation, while circularly polarized light (CPL) emission was not enhanced. The cyclic dimer's CPL emission was largely amplified (glum 1.1 × 10-2) due to intermolecular excimer formation through aggregation, while the CD intensity was not affected.
Assuntos
Corantes Fluorescentes/química , Poliuretanos/química , Dicroísmo Circular , Teoria da Densidade Funcional , Dimerização , Naftóis/química , EstereoisomerismoRESUMO
BACKGROUND: Lung cancer claims more lives than any other cancer worldwide. Lung adenocarcinoma (LUAD) accounts for approximately 40% of all lung cancers. Members of the Transducin-like Enhancer of split (TLE) protein family repress transcription through multiple mechanisms; however, their prognostic value in LUAD is still unclear. METHODS: A dataset from The Cancer Genome Atlas was used to analyze the relationship between the expression of TLE family members and outcomes of LUAD. The expression of TLE family members in 59 normal and 513 tumor samples in the TCGA dataset was selected. For paired analysis, 57 normal and 57 tumor paired tissues were selected. Gene Ontology (GO) term and Reactome pathway enrichment analyses of the TLE family members were performed. Progression-free survival (PFS) and overall survival (OS) served as endpoints in this study. All statistical analyses were performed with R 3.6.0. RESULTS: The expression levels of TLE family proteins differed between 59 normal and 513 tumor samples. High TLE1 and low TLE2 levels were associated with poor progression-free and OS (all P<0.050). Multivariate analysis demonstrated that high TLE1 expression and low TLE2 expression were independent risk factors for a poor outcome in LUAD. Moreover, the combined expression of these two proteins was a good tool for prognostication. CONCLUSIONS: High TLE1 expression and low TLE2 are independent adverse prognostic factors in LUAD and can serve as prognostic biomarkers.
RESUMO
Axial chirality was induced by circularly polarized light to covalent organic frameworks as well as hyperbranched polymers composed of bezene-1,3,5-triyl core units and oligo(benzene-1,4-diyl) as linker units where variation in induction efficiency was rationally interpreted in terms of internal rotation dynamics studied through CPMAS 13C NMR experiments including CODEX measurements.
RESUMO
Preferred-handed propeller conformation was induced by circularly polarized light irradiation to three amorphous molecules with trigonal symmetry, and the molecules with induced chirality efficiently exhibited blue circularly polarized luminescence. In both chirality induction and luminescence, chirality appeared to be amplified due to intermolecular interactions through π-stacking.