RESUMO
Objective: To investigate the effects of derived neutrophil to lymphocyte ratio (dNLR) and lung immune prognostic index (LIPI) score on the overall survival (OS) of non-surgical elderly non-small cell lung cancer (NSCLC) patients. Methods: Clinical and pathological data of NSCLC patients in Hebei General Hospital from January 2014 to June 2018 were collected retrospectively. The dNLR value was calculated based on the results of blood routine before treatment, and the optimal cut-off value of dNLR was obtained by ROC curve. The patients were divided into low dNLR level group and high dNLR level group based on the optimal dNLR cut-off value. The groups were classified as good, intermediate and poor based on the LIPI score consisting of lactate dehydrogenase (LDH) and dNLR tested before treatment. The Kaplan-Meier method and Log rank test were used for survival analysis, and the Cox risk proportional regression model was used for analysis of prognostic influences. Results: The area under the ROC curve for dNLR predicting prognosis in non-surgical elderly NSCLC patients was 0.591 (95% CI: 0.491, 0.692; P=0.093). The optimal cut-off value for dNLR predicting prognosis in elderly NSCLC patients was 2.515, with a sensitivity of 45.5% and a specificity of 81.8%. The gender, BMI, pathological type and degree of tumor differentiation were associated with dNLR levels (P<0.05). The median survival times were 16 and 10 months for patients in the low dNLR level group (dNLR<2.51) and high dNLR level group (dNLR≥2.51), respectively (P<0.001), and 15, 10 and 6 months for patients with good, intermediate and poor LIPI scores, respectively (P<0.001). The age, gender, smoking, pathological type, tumor differentiation, clinical stage, BMI, dNLR level, LDH level and LIPI scores were all associated with patient prognosis (P<0.05), and age≥76 years, tumor differentiation and clinical stage â ¢ and â £ were independent factors influencing patient prognosis (P<0.05). Conclusion: No matter what treatment measures are taken, dNLR level and LIPI score are related to patients' prognosis, and non-surgical elderly NSCLC patients with high dNLR level and poor LIPI score before treatment have worse prognoses.
Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Linfócitos , Neutrófilos , Idoso , Carcinoma Pulmonar de Células não Pequenas/diagnóstico , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Humanos , L-Lactato Desidrogenase , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/tratamento farmacológico , Linfócitos/imunologia , Neutrófilos/imunologia , Prognóstico , Estudos RetrospectivosRESUMO
To explore the correlation between the changes of the intestinal flora of newly treated pulmonary tuberculosis patients and the immune indicators of the body, and to provide a reference for the prevention and treatment of pulmonary tuberculosis. A single-center and case-control study was adopted. From October 2020 to April 2021, 43 patients with newly diagnosed tuberculosis in the Department of Tuberculosis, Affiliated Changsha Central Hospital,University of South China were selected as the control group. 43 cases of newly treated pulmonary tuberculosis (PTB), 43 healthy control (HC) during the same period, collected fresh feces and whole blood of subjects, and used Illumina Hiseq high-throughput sequencing technology to analyze 16S of all microorganisms in feces The V4 region of rRNA was amplified and sequenced, and the structure of the intestinal flora was analyzed by QIIME software. Use flow cytometry to determine the subject's immune indicators (CD3+, CD4+, CD8+, CD4+CD25+CD127-Treg, CD14+CD16+, CD14+CD16-), and analyze the changes in intestinal flora and immune function in newly treated pulmonary tuberculosis patients Inherent connection. The χ² test, t test, and Wilcox rank sum test were used to analyze the differences in age, gender, α diversity, and relative abundance of the two groups of people. Compared with the HC group, the alpha diversity of the intestinal flora in the PTB group decreased (shannon index: t=3.906, P=0.000 2; simpson index: Z=553, P=0.004 7; chao1 index: t=5.395, P=0.000 0). ß diversity analysis showed that there were significant differences in the structure of the intestinal flora between the two groups (P=0.000). Species difference analysis showed that at the phylum level, the relative abundance of Firmicutes in the PTB group was significantly lower than that in the HC group (Z=486.0, P=0.000 5). At the genus level, there are 15 different bacterial genera between the two groups. In the PTB group, bifidobacterium, enterococcus, lactobacillus, anaerostipes, the relative abundance of the above 5 genera of veillonella is higher than that of the HC group (P<0.05); Butyricimonas, clostridium, and broutella (blautia), coprococcus, dorea, lachnospira, roseburia, faecalibacterium, ruminococcus, the relative abundance of 10 bacterial genera including dialister was lower than that of the HC group (P<0.05). Comparison of immune indexes between groups showed that CD14+CD16+monocytes (%) in the PTB group were higher than those in the HC group (t=2.456, P=0.001 6<0.05), while CD14+CD16-monocytes (%) were lower than HC (t=-4.368, P=0.000<0.05), while the differences in CD3+, CD4+, CD8+, CD4+/CD8+and Treg (CD4+CD25+CD127-) were not statistically significant (P>0.05). Spearman correlation analysis showed that Firmicutes in the PTB group was negatively correlated with CD4+/CD8+, CD14+CD16+(r=-0.218, P=0.048; r=-0.245, P=0.025), and positively correlated with CD14+CD16-Correlation (r=0.250, P=0.022); At the genus level, Faecalis is positively correlated with CD4+/CD8+and CD4+(r=0.250, P=0.023; r=0.258, P=0.019); Rosella and CD3+, CD8+and CD14+CD16-are positively correlated (r=0.27, P=0.024; r=0.219, P=0.046; r=0.027, P=0.039), and negatively correlated with CD14+CD16+(r=-0.280, P= 0.01). Changes in the structure of the intestinal flora of newly treated pulmonary tuberculosis patients may be one of the influencing factors of the immune function of the body. Targeted optimization of the structure of the intestinal flora and improvement of the body's immunity may be used as an effective auxiliary treatment for pulmonary tuberculosis.
Assuntos
Microbioma Gastrointestinal , Tuberculose Pulmonar , Estudos de Casos e Controles , Correlação de Dados , Humanos , MonócitosRESUMO
ABSTRACT: Metabolomics is an interdisciplinary subject that rose in the post-genomic era, which focuses on quantitative study of the response of living organisms to outside stimulation and pathophysiological changes, as well as multiple dynamic response of the level of in vivo metabolites caused by genetic mutation. It is extensively used in basic research of system biology, materia medica, clinical medicine, etc. In the forensic field, metabolomics mainly focuses on forensic toxicology, but with the generalization of certain techniques, it's foreseeable that metabolomics has a broad research prospect in forensic pathology. This article summarizes the major analysis techniques and methods of metabolomics, describes the research status of metabolomic techniques in the field of forensic pathology application research, including postmortem interval and death cause. Moreover, this article summarizes and discusses the potential applicable areas, in order to provide reference for relative research and application.
Assuntos
Patologia Legal , Metabolômica , Mudanças Depois da Morte , Autopsia , Patologia Legal/tendências , Toxicologia Forense , HumanosRESUMO
ABSTRACT: Age estimation is of great significance in the fields of criminal investigation and forensic identification. It can provide the age information of individuals to judicial departments to facilitate the development of judicial work. In recent years, age estimation methods expanded from the morphological level to the molecular biology level. With the rapid development of epigenetics represented by DNA methylation, and the advancement of DNA methylation detection technology together with the detection platform, many age estimation methods based on DNA methylation biomarkers, or using several biological fluids, such as blood, blood stains, saliva, semen stains, etc. are developed. Currently, researches related to age estimation based on DNA methylation are relatively widely carried out. This paper summarizes the researches on age estimation based on DNA methylation, in order to provide references for related studies and forensic applications.
Assuntos
Envelhecimento/genética , Metilação de DNA , Genética Forense/métodos , Epigênese Genética , Epigenômica , Humanos , SêmenRESUMO
ABSTRACT: Objective To study the structure and differences of bacterial communities in different soils, and to explore the effectiveness of 16S rRNA sequencing in identification of different soil. Methods Soil samples from 7 places in Shanghai were collected, then bacterial genomic DNA were extracted from them. The fragments of hypervariable region from 16S rRNA sequences were sequenced with high-throughput sequencing techniques. The results were quantified or visualized with bioinformatics software. The differences in diversity and abundance among the three kinds of bacterial communities in soil samples from grassland, forests and beaches were compared and analyzed. Results The statistical differences that existed among the alpha diversity indexes of bacterial communities in soil samples of grassland, forests and beaches had statistical significance. The relative abundance and diversity of bacterial communities in these three kinds of soil were significantly different. Grassland soil had higher Acidobacteria abundance, forest soil had higher Proteobacteria abundance, beach soil had higher Actinobacteria abundance. However, the differences in soil bacterial communities in artificial grasslands, natural grasslands and industrial district grasslands did not have statistical significance. Conclusion 16S rRNA sequencing can effectively distinguish different soils. This method may be able to provide clues for first crime scene inference in criminal cases.
Assuntos
DNA Bacteriano/genética , Genética Forense , Sequenciamento de Nucleotídeos em Larga Escala/métodos , RNA Ribossômico 16S/genética , Microbiologia do Solo , Biodiversidade , China , FilogeniaRESUMO
Circular RNA ï¼circRNAï¼ is a type of noncoding RNA with tissue specificity and high stability, which forms a closed continuous loop and is abundantly expressed in tissue cells. According to recent research, the regulatory function of circRNA elucidating in the occurrence and development of disease shows a potential for diagnosing clinical disease and revealing disease mechanism. This paper reviews the biological characteristics, analysis methods of circRNA and its research progress in clinical application as biomarker, and outlooks its application in the field of forensic medicine.
Assuntos
Medicina Legal/tendências , Marcadores Genéticos , RNA , Biomarcadores , Humanos , RNA CircularRESUMO
This study further evaluated the in vitro and in vivo anti-Helicobacter pylori activities and potential underlying mechanism of patchouli alcohol (PA), a tricyclic sesquiterpene. In the in vitro assay, the capacities of PA to inhibit and kill H. pylori were tested on three standard strains at different pH values and on 12 clinical isolates. The effects of PA on H. pylori adhesion (and its alpA, alpB, and babA genes), motility (and its flaA and flaB genes), ultrastructure, and flagellation were investigated. Moreover, the H. pylori resistance to and postantibiotic effect (PAE) of PA were determined. Furthermore, the in vivo effects of PA on H. pylori eradication and gastritis were examined. Results showed that MICs of PA against three standard strains (pH 5.3 to 9) and 12 clinical isolates were 25 to 75 and 12.5 to 50 µg/ml, respectively. The killing kinetics of PA were time and concentration dependent, and its minimal bactericidal concentrations (MBCs) were 25 to 75 µg/ml. In addition, H. pylori adhesion, motility, ultrastructure, and flagellation were significantly suppressed. PA also remarkably inhibited the expression of adhesion genes (alpA and alpB) and motility genes (flaA and flaB). Furthermore, PA treatment caused a longer PAE and less bacterial resistance than clarithromycin and metronidazole. The in vivo study showed that PA can effectively eradicate H. pylori, inhibit gastritis, and suppress the expression of inflammatory mediators (COX-2, interleukin 1ß, tumor necrosis factor alpha, and inducible nitric oxide synthase [iNOS]). In conclusion, PA can efficiently kill H. pylori, interfere with its infection process, and attenuate gastritis with less bacterial resistance, making it a potential candidate for new drug development.
Assuntos
Antibacterianos/farmacologia , Gastrite/tratamento farmacológico , Infecções por Helicobacter/tratamento farmacológico , Helicobacter pylori/efeitos dos fármacos , Sesquiterpenos/farmacologia , Adesinas Bacterianas/biossíntese , Adesinas Bacterianas/genética , Animais , Aderência Bacteriana/efeitos dos fármacos , Proteínas da Membrana Bacteriana Externa/biossíntese , Proteínas da Membrana Bacteriana Externa/genética , Proteínas de Bactérias/biossíntese , Proteínas de Bactérias/genética , Claritromicina/farmacologia , Feminino , Flagelina/biossíntese , Flagelina/genética , Gastrite/microbiologia , Expressão Gênica/efeitos dos fármacos , Infecções por Helicobacter/microbiologia , Helicobacter pylori/isolamento & purificação , Humanos , Hidroliases/biossíntese , Hidroliases/genética , Inflamação/tratamento farmacológico , Inflamação/microbiologia , Masculino , Metronidazol/farmacologia , Camundongos , Camundongos Endogâmicos C57BL , Testes de Sensibilidade Microbiana , Oxirredutases/biossíntese , Oxirredutases/genéticaRESUMO
HLA-A*24:02:60 allele differs from A*24:02:01:01 by one nucleotide substitution at nt 564 from C to T.
Assuntos
Genes MHC Classe I , Antígenos HLA-A/genética , Alelos , Sequência de Bases , Medula Óssea , China , Humanos , Masculino , Dados de Sequência Molecular , Alinhamento de Sequência , Homologia de Sequência do Ácido Nucleico , Doadores de TecidosRESUMO
The novel HLA-B*40:229 allele shows one nucleotide difference from B*40:02:01 in exon 2 at nucleotide position 97 (C â T).
Assuntos
Alelos , Antígeno HLA-B40/genética , Mutação Puntual , Sequência de Bases , Transplante de Medula Óssea , China , Códon , Éxons , Genótipo , Antígeno HLA-B40/imunologia , Teste de Histocompatibilidade , Humanos , Dados de Sequência Molecular , Alinhamento de Sequência , Análise de Sequência de DNA , Doadores de TecidosRESUMO
The newly detected HLA-B*40:210 allele has two nucleotide changes in exon 2 compared to B*40:49 allele.
Assuntos
Alelos , Substituição de Aminoácidos , Antígeno HLA-B40/genética , Polimorfismo de Nucleotídeo Único , Povo Asiático , Sequência de Bases , Transplante de Medula Óssea , Códon , Éxons , Antígeno HLA-B40/classificação , Antígeno HLA-B40/imunologia , Teste de Histocompatibilidade , Humanos , Dados de Sequência Molecular , Isoformas de Proteínas/classificação , Isoformas de Proteínas/genética , Isoformas de Proteínas/imunologia , Alinhamento de Sequência , Doadores de TecidosRESUMO
HLA-A*11:125 allele differs from A*11:01:01 by one nucleotide substitution at nt 140 from T to C.
Assuntos
Alelos , Antígenos HLA-A/genética , Mutação Puntual , Feminino , Humanos , MasculinoRESUMO
The novel HLA-A*02:06:13 allele shows one nucleotide difference from A*02:06:01 in exon 4 at nucleotide position 657 (TâC).
Assuntos
Povo Asiático , Antígeno HLA-A2/genética , Teste de Histocompatibilidade , Sequência de Bases , Transplante de Medula Óssea , Éxons/genética , Frequência do Gene , Genótipo , Humanos , Dados de Sequência Molecular , Polimorfismo de Nucleotídeo Único , Análise de Sequência de DNA , Doadores de TecidosRESUMO
A novel HLA-DRB1 allele, DRB1*13:26:02, has been identified by sequence-based typing in a Chinese individual.
Assuntos
Alelos , Éxons , Cadeias HLA-DRB1/genética , Mutação , Povo Asiático , Sequência de Bases , Transplante de Medula Óssea , Códon , Cadeias HLA-DRB1/imunologia , Teste de Histocompatibilidade , Humanos , Dados de Sequência Molecular , Alinhamento de Sequência , Análise de Sequência de DNA , Doadores de TecidosRESUMO
HLA-B*40:211 allele differs from HLA-B*40:02:01 by an amino acid exchange at position 132, which has a missense mutation in exon 3 from Ser to Tyr.
Assuntos
Alelos , Antígenos HLA-B/genética , Mutação de Sentido Incorreto , Povo Asiático , Sequência de Bases , Transplante de Medula Óssea , Éxons , Teste de Histocompatibilidade , Humanos , Dados de Sequência Molecular , Alinhamento de Sequência , Análise de Sequência de DNA , Doadores de TecidosRESUMO
The skin is the first barrier to maintain the stability of internal environment of the body and resist harmful factors of external environment, and is easily damaged because of various external factors. When full-thickness skin defects reach a certain level, it is difficult for the skin to repair itself, so wound dressings are needed to promote wound healing. Seeking an ideal dressing that can promote wound healing has long been a hot research topic. Chitosan is a unique biopolysaccharide polymer with good biocompatibility, biodegradability, antibacterial activity, and thermal stability, which has great potential in the development and application of wound dressings. Based on the introduction of properties of chitosan, this article reviews the role and mechanism of chitosan-based wound dressings in wound healing, and summarizes the hemostatic effect, antibacterial effect, delivery effect, and tissue regeneration promotion effect of chitosan, aiming to provide a certain reference for the research and development of new chitosan-based wound dressings in the future.
Assuntos
Quitosana , Quitosana/farmacologia , Quitosana/uso terapêutico , Cicatrização , Bandagens , Pele , Antibacterianos/farmacologia , Hidrogéis/farmacologiaRESUMO
The novel A*33:22 differs from A*33:03:01 by two nucleotides at position 12(A>G)and 19(T>G)of exon 3.
Assuntos
Alelos , Medula Óssea/imunologia , Antígenos HLA-A/genética , Nucleotídeos/genética , Substituição de Aminoácidos , Povo Asiático , Sequência de Bases , Éxons , Loci Gênicos , Antígenos HLA-A/imunologia , Teste de Histocompatibilidade , Humanos , Dados de Sequência Molecular , Isoformas de Proteínas/genética , Isoformas de Proteínas/imunologia , Análise de Sequência de DNA , Homologia de Sequência do Ácido NucleicoRESUMO
The novel B*51:63 is identical to B*51:01:01 with an exception of one base substitution at position 76 (A > C) of exon 3 resulting in codon #116 changed from TAC (Tyr) to TCC (Ser).
Assuntos
Substituição de Aminoácidos , Antígenos HLA-B/classificação , Antígenos HLA-B/genética , Teste de Histocompatibilidade , Sequência de Bases , China , Éxons/genética , Humanos , Dados de Sequência Molecular , Alinhamento de Sequência , Análise de Sequência de DNARESUMO
A novel human leukocyte antigen-B allele, officially named B*15:144 allele, the previous designation B*9544 allele, was found in a potential Chinese bone marrow donor when direct sequence-based typing was carried out. The novel B*15:144 is identical to B*15:02:01 with the exception of two base substitution at position 195 (C>T), 196 (T>G) of exon 3 resulting in codon #156 changed from CTG (Leu) to TGG (Trp).