RESUMO
Objective To understand the epidemiological characteristics and psychological factors of senile arrhythmia in Xining area, and provide theoretical basis for the prevention and treatment of senile arrhythmia. Methods A total of 518 elderly patients treated in the department of Cardiology in Xining area from June 2018 to June 2020 were selected and divided into control group (without arrhythmia) and study group (with arrhythmia) according to whether the patients were complicated with arrhythmia. All subjects underwent 24h electrocardiographic monitoring to record heart rate, heart rate lead electrocardiogram and 24h dynamic electrocardiogram examination. Refer to the patient's medical records for general information, including age, gender, coronary heart disease, hypertension, etc.; Psychological factors such as depression, anxiety, sleep and quality of life were analyzed. The correlation between PSQI score, HAMA-14 score, HAMD-17 score and arrhythmia was analyzed by Pearson correlation analysis. Results Among 518 patients, 305 (58.89%) were complicated with arrhythmia, including 155 males and 150 females, with an average age of 76.15±3.79. Atrial arrhythmia accounted for 38.36% (117/305), sinus tachycardia accounted for 28.52% (87/305). Ventricular arrhythmias accounted for 11.48% (35/305); The incidence of arrhythmia in 70-79 year olds was significantly higher than that in 60-69 year olds (χ2=8.358 , P2=6.801, P2=1.534, P>0.05). The incidence of arrhythmia was significantly higher in patients with hypertension and coronary heart disease (χ2=16.401, χ2=9.772 , P<0.05). There were significant differences in PSQI score, HAMA-14 score, HAMD-17 score between the two groups (P<0.05). Pearson correlation analysis showed that PSQI score, HAMD-14 score and HAMD-17 score were positively correlated with the occurrence of arrhythmia in the elderly population in Xining area, with correlation coefficients r=0.417 , 0.607 , 0.653 (P<0.05). Conclusion The incidence of arrhythmia increases in the elderly population in Xining area, mainly in the rural elderly population, which is associated with depression and anxiety and sleep disorders and other psychological factors. Early detection and early intervention can improve the response to treatment and accessibility.
RESUMO
In this work, a sensitive and efficient method was established and validated for qualitative and quantitative analysis of major quassinoid diterpenoids constituents from the extract of Eurycoma longifolia by ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry(UPLC-Q-TOF-MS) and ultra-performance liquid chromatography coupled with a triple quadrupole mass spectrometry(UPLC-QQQ-MS/MS). The UPLC-Q-TOF-MS analysis was performed on an Agilent Eclipse Plus C_(18) RRHD(2.1 mm×100 mm,1.8 µm) column with acetonitrile and 0.1% formic acid water as mobile phase by gradient elution. The UPLC-QQQ-MS/MS analysis was performed on an Agilent Eclipse Plus C_(18) RRHD(2.1 mm×50 mm, 1.8 µm)column with acetonitrile and 0.1% formic acid water as mobile phase by gradient elution. The data was collected by electrospray ionization in positive mode. According to the contrast of the reference standards and the accurate masses of molecules, a total of 32 quassinoid diterpenoids in E. longifolia extract were identified by UPLC-Q-TOF-MS. For quantitative the linear range of 4 detected quassinoid diterpenoids were good(r≥0.999 6), and the overall recoveries ranged from 90.35% to 106.4%, with the RSD ranging from 1.8% to 3.6%. The method was accurate, reliable and efficient, and could comprehensively reflect the chemical constituents and content of E. longifolia, and could provide a reference for further elucidating its pharmacological basis and quality control.
Assuntos
Medicamentos de Ervas Chinesas , Eurycoma , Quassinas , Cromatografia Líquida de Alta Pressão , Diterpenos , Espectrometria de Massas em TandemRESUMO
Tyrosinase is an important enzyme in controlling the formation of melanin in melanosome, and plays a key role in the pigmentation of hair and skin. The abnormal expression or activation of tyrosinase is associated with several diseases such as albinism, vitiligo, melanoma and Parkinson disease. Excessive deposition of melanin could cause diseases such as freckles and brown spots in the human body, and it is also closely related to browning of fruits and vegetables and insect molting. Detecting and inhibiting the activity of tyrosinase is of extraordinary value in the progress of diagnosis and treatment of these dis-eases. Therefore, many selective optical detection probes and small molecular inhibitors have been developed, and have made significant contributions to the basic and clinical research on these diseases. In this paper, the detection and inhibition of tyrosinase and their application in whitening products are reviewed, with special emphasis on development of fluorescent probes and inhibitors. Hopefully, this review will help design more efficient and sensitive tyrosinase probes and inhibitors, as well as shed light on novel treatment of diseases such as melanoma.
RESUMO
Motor neuron disease(MND) is a group of progressive motor neuron diseases and the pathogenesis is not well defined.The pathologic hallmark of MND is death of lower motor neurons(consisting of anterior horn cells in the spinal cord and their brainstem homologues innervating bulbar muscles) and upper, or corticospinal, motor neurons.The clinical manifestations of MND are mucsle weakness, muscle atrophy, fasciculations, bulbar paralysis and positive pyramidal signs.Traditional Chinese medicine(TCM) named MND as flaccidity syndrome.Recently, some scholars have proposed that "MND" can be regarded as an independent research object of TCM.At present, symptomatic supportive treatment is the main treatment for MMD in western medicine, which can only slow the progress of the disease.TCM treatment for MND has advantages of more effective than western medicine, fewer adverse reactions and lower price.So TCM can be used as an effective method for combined treatment of MND.This article reviews the research progress of syndrome and treatment of MND with TCM.
RESUMO
Motor neuron disease(MND) is a group of progressive motor neuron diseases and the pathogenesis is not well defined.The pathologic hallmark of MND is death of lower motor neurons (consisting of anterior horn cells in the spinal cord and their brainstem homologues innervating bulbar muscles ) and upper, or corticospinal,motor neurons.The clinical manifestations of MND are mucsle weakness ,muscle atrophy,fasciculations,bulbar paralysis and positive pyramidal signs.Traditional Chinese medicine ( TCM) named MND as flaccidity syndrome.Recently,some scholars have proposed that "MND" can be regarded as an independent research object of TCM.At present,symptomatic supportive treatment is the main treatment for MMD in western medicine ,which can only slow the progress of the disease.TCM treatment for MND has advantages of more effective than western medicine ,fewer adverse reactions and lower price.So TCM can be used as an effective method for combined treatment of MND.This article reviews the research progress of syndrome and treatment of MND with TCM.
RESUMO
Objective To explore the correlation between serum lipoprotein-associated phospholipase A2 (Lp-PLA2) level with the occurrence of ischemic stroke and prognosis in the patients with hypertension . Methods Eighty-eight patients with hypertension in this hospital from January 2013 to January 2016 were se-lected ,including 34 cases of simple hypertension and 54 cases of hypertension complicating ischemic stroke . The Lp-PLA2 level was detected .The severity of ischemic stroke was evaluated on 1 ,14 d after admission by adopting the NIHSS .The patients with hypertension complicating ischemic stroke were divided into the good prognosis group and poor prognosis group according to the NIHSS change situation .Moreover the independent predictive factors of prognosis were evaluated by adopting the Logistic multivariate regression .Results The Lp-PLA2 level in the patients with hypertension complicating ischemic stroke was significantly higher than that in the patients with simple hypertension .The Lp-PLA2 level (OR=1 .523 ,95％ CI=1 .323-1 .657) and NIHSS score (OR=3 .275 ,95％ CI=1 .402 -6 .208) at admission were the independent predictive factors of poor prognosis .Conclusion Serum Lp-PLA2 level is closely correlated with the occurrence and prognosis of ische-mic stroke in the patients with hypertension ,which can serve an evaluation index for the occurrence and prognosis of ischemic stroke in the patients with hypertension and provides an objective basis for the clinical therapy .
RESUMO
OBJECTIVE: To study the inhibiting effect of Endostar combined with ginsenoside Rg3 on breast cancer tumor growth in tumor-bearing mice. METHODS: Female mice were selected as experimental animals, and breast cancer tumor-bearing mouse models were established and then divided into groups A, B, C and D that respectively received saline, recombinant human endostatin, ginsenosides Rg3 and recombinant human endostatin combined with Rg3 intervention; 7 d, 14 d and 21 d after intervention, tumor tissue volume was measured; 21 d after intervention, mice were killed, tumor tissue was collected, and mRNA contents of angiogenesis molecules, invasion molecules, autophagy marker molecules and autophagy signaling pathway molecules were detected. RESULTS: At 7 d, 14 d and 21 d after intervention, tumor tissue volume of groups B, C and D was lower than that of group A, and tumor tissue volume of group D was lower than that of groups B and C; mRNA contents of VEGFA, VEGFB, VEGFC, MMP2, MMP9, p62, mTOR, PI3K, Akt, JNK and Beclin-1 in tumor tissue of groups B, C and D were significantly lower than those of group A, and LC3-II/LC3-I was significantly higher than that of group A; mRNA contents of VEGFA, VEGFB, VEGFC, MMP2, MMP9, p62, mTOR, PI3K, Akt, JNK and Beclin-1 in tumor tissue of group D were significantly lower than those of groups B and C, and LC3-II/LC3-I was higher than that of groups B and C. CONCLUSIONS: Endostar combined with ginsenoside Rg3 has stronger inhibiting effect on breast cancer tumor growth in tumor-bearing mice than single drug, and it can inhibit angiogenesis and cell invasion, and enhance cell autophagy.
RESUMO
Objective To develop a set of information system for managing procedure in rehabilitation hospital, which can coordinate the services of rehabilitation teams characterized by the modern rehabilitation model. Methods Based on the working pattern of the rehabili-tation teams, and combined with the hospital information system and electronic medical records, the closed-loop management information system was developed, with the core of treatment-task schedules and feedbacks, and treatment-record communications. Results and Conclu-sion The Rehabilitation Treatment Management System was developed, which established the intelligent treatment process, realized the closed-loop management of resource sharing and treatment task.
RESUMO
Objective: To study the inhibiting effect of Endostar combined with ginsenoside Rg3 on breast cancer tumor growth in tumor-bearing mice. Methods: Female mice were selected as experimental animals, and breast cancer tumor-bearing mouse models were established and then divided into groups A, B, C and D that respectively received saline, recombinant human endostatin, ginsenosides Rg3 and recombinant human endostatin combined with Rg3 intervention; 7 d, 14 d and 21 d after intervention, tumor tissue volume was measured; 21 d after intervention, mice were killed, tumor tissue was collected, and mRNA contents of angiogenesis molecules, invasion molecules, autophagy marker molecules and autophagy signaling pathway molecules were detected. Results: At 7 d, 14 d and 21 d after intervention, tumor tissue volume of groups B, C and D was lower than that of group A, and tumor tissue volume of group D was lower than that of groups B and C; mRNA contents of VEGFA, VEGFB, VEGFC, MMP2, MMP9, p62, mTOR, PI3K, Akt, JNK and Beclin-1 in tumor tissue of groups B, C and D were significantly lower than those of group A, and LC3-II/LC3-I was significantly higher than that of group A; mRNA contents of VEGFA, VEGFB, VEGFC, MMP2, MMP9, p62, mTOR, PI3K, Akt, JNK and Beclin-1 in tumor tissue of group D were significantly lower than those of groups B and C, and LC3-II/LC3-I was higher than that of groups B and C. Conclusions: Endostar combined with ginsenoside Rg3 has stronger inhibiting effect on breast cancer tumor growth in tumor-bearing mice than single drug, and it can inhibit angiogenesis and cell invasion, and enhance cell autophagy.
RESUMO
OBJECTIVE@#To study the inhibiting effect of Endostar combined with ginsenoside Rg3 on breast cancer tumor growth in tumor-bearing mice.@*METHODS@#Female mice were selected as experimental animals, and breast cancer tumor-bearing mouse models were established and then divided into groups A, B, C and D that respectively received saline, recombinant human endostatin, ginsenosides Rg3 and recombinant human endostatin combined with Rg3 intervention; 7 d, 14 d and 21 d after intervention, tumor tissue volume was measured; 21 d after intervention, mice were killed, tumor tissue was collected, and mRNA contents of angiogenesis molecules, invasion molecules, autophagy marker molecules and autophagy signaling pathway molecules were detected.@*RESULTS@#At 7 d, 14 d and 21 d after intervention, tumor tissue volume of groups B, C and D was lower than that of group A, and tumor tissue volume of group D was lower than that of groups B and C; mRNA contents of VEGFA, VEGFB, VEGFC, MMP2, MMP9, p62, mTOR, PI3K, Akt, JNK and Beclin-1 in tumor tissue of groups B, C and D were significantly lower than those of group A, and LC3-II/LC3-I was significantly higher than that of group A; mRNA contents of VEGFA, VEGFB, VEGFC, MMP2, MMP9, p62, mTOR, PI3K, Akt, JNK and Beclin-1 in tumor tissue of group D were significantly lower than those of groups B and C, and LC3-II/LC3-I was higher than that of groups B and C.@*CONCLUSIONS@#Endostar combined with ginsenoside Rg3 has stronger inhibiting effect on breast cancer tumor growth in tumor-bearing mice than single drug, and it can inhibit angiogenesis and cell invasion, and enhance cell autophagy.
RESUMO
Recently pseudorabies outbreaks have occurred in many vaccinated farms in China. To identify genetic characteristics of pseudorabies virus (PRV) strains, we obtained the genomic sequences of PRV strains HeN1 and JS, which were compared to 4 PRV genomes and 729 partial gene sequences. PRV strains isolated in China showed marked sequence divergence compared to European and American strains. Phylogenetic analysis revealed that for the first time PRV can be divided into 2 distinct clusters, with Chinese strains being genotype II and PRVs isolated from other countries being genotype I. Restriction fragment length polymorphism analysis confirmed differences between HeN1 and Bartha strains, as did the presence of unique insertion/deletion polymorphisms and microsatellites. This divergence between the two genotypes may have been generated from long-term, independent evolution, which could also explain the low efficacy of the Bartha vaccine in protecting pigs infected with genotype II PRV.
Assuntos
Variação Genética , Herpesvirus Suídeo 1/classificação , Herpesvirus Suídeo 1/genética , Pseudorraiva/epidemiologia , Pseudorraiva/virologia , Animais , China/epidemiologia , Análise por Conglomerados , DNA Viral/química , DNA Viral/genética , Genoma Viral , Genótipo , Herpesvirus Suídeo 1/isolamento & purificação , Epidemiologia Molecular , Dados de Sequência Molecular , Filogenia , Análise de Sequência de DNA , Homologia de Sequência , SuínosRESUMO
One sediment core was obtained from the center of Yamenqi Lake at the Songnen Plain in eastern China in August 2010 using a gravity corer. The sediment samples were digested using HNO3-HClO4-HF. Concentrations of the metals Cr, Cu, Mn, Ni, Fe, Pb, Zn, Cd, Al, Ba, Ca, K, Li, Mg, Na and Sr were determined using inductively coupled plasma-mass spectrometry (ICP-MS). With the dating approach, the characteristics and polluted history of heavy metals in lake sediments were determined. The heavy metal pollution of sediment was discussed based on the enrichment factor. The results are listed as following:(1) the contents of all elements had a smooth variation trend before 1950,and fluctuated severely from 1950 to 1990. The contents of Mn, Zn, Cd, Pb, Fe, Ni, Cr, Cu, Ca, Li and Sr increased obviously since 1990. (2) Mn, Zn, Pb and Cd showed light contamination degree. Contents of Ni, Cr and Cu were below the contamination level.
Assuntos
Poluição Ambiental/análise , Sedimentos Geológicos/química , Lagos/química , Metais Pesados/análise , China , Monitoramento AmbientalRESUMO
Through routine and nested PCR amplifications, four complete genome sequences of porcine Torque teno virus (TTV) type II were obtained from swine herds. By comparison with the TTV genome sequences deposited in GenBank, we found the most divergent types so far described. The level of genetic diversity between these genomes is higher than would be expected within a single virus species. A nucleotide and amino acid phylogenetic tree was constructed.
Assuntos
Genoma Viral , Torque teno virus/genética , Animais , DNA Viral , Bases de Dados Genéticas , Genes Virais , Variação Genética , Dados de Sequência Molecular , Fases de Leitura Aberta , Filogenia , SuínosRESUMO
Here, we report three complete genome sequences of porcine torque teno virus type I (TTV1) which were obtained from swine tissues and sera from southern China through routine and nested PCR amplification and characterized together with other genome sequences already deposited in GenBank. The results showed that the TTV1 sequences were highly divergent and could be divided into 1a and 1b subtypes.
Assuntos
DNA Viral/química , DNA Viral/genética , Genoma Viral , Torque teno virus/genética , Animais , China , Genótipo , Dados de Sequência Molecular , Filogenia , Análise de Sequência de DNA , Suínos , Torque teno virus/classificação , Torque teno virus/isolamento & purificaçãoRESUMO
Objective To develop a method for dynamically observing the biological efficacy of botulinum toxin A (BTX-A) and to investigate the dose-effect relationship between BTX-A dosage and muscle strength.MethodsFifty-four male Sprague Dawley rats were randomly divided into 9 groups.Groups 1-7 were injected intramuscularly with 0.1 ml BTX-A (0.01 U to 4.0 U) into the gastrocnemius on the right side.Rats in group 8 were injected intramuscularly with an equal volume of saline solution as the control group,and group 9 was used to determine the location of injection.Gastrocnemius muscle strength was evaluated using a self-made evaluation system before and after the toxin injection and on the 3rd,7th,14th,21st,30th,45th,60th and 75th day following.ResultsMuscle strength reached its lowest level on days 3 to 7,with a significant difference in the decline of muscle strength between the test groups and the control group up to day 60.With the lower BTX-A doses (0.01 U,0.1 U,0.5 U,1.0 U),muscle strength had decreased significantly on the 21st day,but recovered to its initial levels in all groups at the same time.There was no significant difference among the 1.0 U,1.5 U,2.0 U and 4.0 U groups.ConclusionsStandardized gastrocnemius injection combined with neuromuscular functional evaluation can establish a model of BTX-A dosage and muscle paralysis which can be used to assess the evolution of the biological efficacy of BTX-A.
RESUMO
<p><b>OBJECTIVE</b>To evaluate the influence of two different types of digestive tract reconstruction on the life quality, nutritional status and tolerance to adjuvant chemotherapy after total gastrectomy in patients with gastric carcinoma.</p><p><b>METHODS</b>The clinical data of a total of 107 patients treated in our department from January 2005 to december 2008 were analyzed retrospectively. Among them, 49 patients underwent digestive tract reconstruction with functional jejunal interposition (FJI group) and 58 patients underwent Roux en-Y jejunal P-type anastomosis (PR group) after total gastrectomy. 79 of 107 (73.8%) patients received postoperative adjuvant chemotherapy with XELOX regimen. The digestive complications and tolerance to chemotherapy were assessed respectively.</p><p><b>RESULTS</b>Neither severe complications nor surgery-related or chemotherapy-related death were observed among the 107 patients. There were statistical differences in the incidence rate of emaciation, dumping syndrome and retention syndrome between the FJI and PR groups (P < 0.05), but no significant statistical difference in incidence rate of reflux esophagitis (P > 0.05). 28 of 40 (70.0%) patients in the FJI group completed all six cycles of chemotherapy, while 12 (30.0%) patients interrupted the treatment due to chemotherapy-related toxicity. 39 patients in the PR group received chemotherapy, 19 (48.7%) of them completed 6 cycles of chemotherapy but 20 (51.3%) patients interrupted. There was a significant difference in the incidence rate of grade III/IV chemotherapeutic toxicity and completion rate of chemotherapy (P < 0.05).</p><p><b>CONCLUSIONS</b>Both functional jejunal interposition and Roux-Y operation are reasonable and safe procedures of digestive tract reconstruction. The incidence rates of emaciation, dumping syndrome and retention syndrome are lower in the patients with FJI, showing a better tolerance to adjuvant chemotherapy than Roux en-Y jejunal p type anastomosis.</p>
Assuntos
Humanos , Anastomose em-Y de Roux , Métodos , Anastomose Cirúrgica , Métodos , Protocolos de Quimioterapia Combinada Antineoplásica , Usos Terapêuticos , Quimioterapia Adjuvante , Desoxicitidina , Fluoruracila , Gastrectomia , Métodos , Jejuno , Cirurgia Geral , Estado Nutricional , Período Pós-Operatório , Qualidade de Vida , Procedimentos de Cirurgia Plástica , Métodos , Estudos Retrospectivos , Neoplasias Gástricas , Tratamento Farmacológico , Cirurgia GeralRESUMO
Objective To investigate the protectve effects and underlying mechanisms of deferroxamine on glutamate-induced injury in cultured hippocampal neurons.Methods Primarily cultured hippocampal neurons from fetal rat were used in a model of glutamate induced neurotoxicity.There were two experimental groups.Neurons were pretreated with deferroxamine before glutamate in the deferroxamine group, and neurons were treated with glutamate only in the control group.The morphological change was examined under microscope.Hoechst 33342 DNA staining method was used to study the ratio of condensed nuclei.The levels of lactate dehydrogenase (LDH), malonaldehyde (MDA) and hydroxyl radical were determined using biochemistry.The change in calcium signal was detected using microfluorescent technique.Results The neurons pretreated by deferroxamine had intact morphology with the ratio of condensed nuclei at 14% ± 6% compared to 58% ± 6% (t= 8.98, P ＜0.01 ) in the control group.LDH level was (36.42 ± 8.99) U/L in the deferroxamine group and was (68.06 ± 11.26) U/L in the control group ( t =3.25,P＜0.05).The respective levels of hydroxyl radical were (34.21 ±4.23) U/L and (47.06 ±8.79) U/L (t = 3.11, P ＜0.05 ).The respective levels of MDA were (12.26 ± 2.78 ) nmol/mg and (28.86±5.19) nmol/mg(t =4.88,P＜0.01).Conclusion Deferroxamine can protect neurons from glutamate induced damage.The mechanisms include an inhibition of Ca2+ overload and reduction in the levels of MDA and hydroxyl radicals.
RESUMO
Molecular genetic map is a fundamental organizational tool for genomic research. However, a genetic linkage map for Bupleurum chinense DC. has not been developed. In this study, with the theory of pseudo-testcross, 96 F1 plants from an intraspecific cross of B. chinense were used as mapping populations. Twenty eight ISSR (inter-simple sequence repeat) primers and 44 SSR (simple sequence repeat) primers were used to detect the polymorphisms between the parental plants, and of them, 28 ISSRs and 14 SSRs were selected to analyze the F1 populations. The map consisted of 13 linkage groups which included 80 (72 ISSRs and 8 SSRs) loci, and covered 2 633.9 cM with an average density of 33.4 cM. All 13 linkage groups consisted of 2-31 loci ranging in length from 15.4-1295.7 cM. This map will provide a basis for studies on gene mapping, map-based cloning and maker-assisted selection of important traits in B. chinense.
Assuntos
Bupleurum , Genética , Mapeamento Cromossômico , Métodos , DNA de Plantas , Genética , Ligação Genética , Repetições de Microssatélites , Plantas Medicinais , Genética , Polimorfismo GenéticoRESUMO
<p><b>BACKGROUND AND OBJECTIVE</b>Colorectal cancer is one of the most common malignant cancers in the world. Although the clinicopathologic staging is the golden criterion for the prognosis at present, the optimum prognostic criteria for colorectal cancer should be a combination of the clinicopathologic staging and the molecular markers. However, there are currently no molecular markers available for the prognosis of colorectal cancer. Several tumor-suppressor genes associated with colorectal cancer have been mapped at the 18q21-23 region. In this study we detected the frequency of loss of heterozygosity (LOH) at chromosome 18q and investigated the relationship between LOH and clinicopathologic features and its prognostic value for patients with stage II colon cancer.</p><p><b>METHODS</b>A total of 106 samples of tumor tissues and corresponding normal mucosa from patients with sporadic stage-II colon cancer were included in this study. All the samples were formalin-fixed and paraffin-embedded. DNA was extracted from tumor tissues and LOH of D18S474, D18S55, D18S58, D18S61 and D18S64 at chromosome 18q was analyzed using polymerase chain reaction (PCR), polyacrylamide gel-electrophoresis, and DNA sequencing method. Multivariate analysis for association between LOH and prognosis in colon cancer patients was performed with Cox proportional hazards regression model.</p><p><b>RESULTS</b>The median follow-up time was 68 months. For 106 patients, 5-year survival rate was 83.6%, which was associated with age and gross tumor type (P = 0.011 and 0.034, respectively). Among 102 patients who were eligible for LOH information, the overall frequency of LOH is 49.0% (50/102), and that of LOH at 5 microsatellite loci of D18S474, D18S55, D18S58, D18S61, and D18S64 was 30.2% (26/86), 23.4% (18/77), 28.6% (20/70), 35.0% (28/80), and 20.8%(15/72), respectively. The occurrence of LOH was significantly associated with tumor location and histopathologic grade (P = 0.023, 0.016 and 0.005, respectively). LOH was more frequent on the left-side, poorly-differentiated adenocarcinoma, and nonmucinous colon cancers. The occurrence of 18q-LOH was significantly associated with 5-year overall survival rate and disease free survival rate (P = 0.008 and 0.006, respectively). The occurrence of 18q-LOH at the loci of D18S474 and D18S61 was significantly associated with 5-year overall survival rate (P = 0.010 and 0.005, respectively). The multivariate analysis showed that only the occurrence of 18q-LOH was significantly associated with prognosis (P = 0.021).</p><p><b>CONCLUSIONS</b>There is a high occurrence of LOH at the loci of 18q. The expression of LOH is significantly associated with tumor location and histopathologic grade. The occurrence of 18q-LOH is an independent poor prognostic factor for the patients with stage-II colon cancer.</p>
Assuntos
Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Adenocarcinoma , Genética , Patologia , Cirurgia Geral , Adenocarcinoma Mucinoso , Genética , Patologia , Cirurgia Geral , Adenocarcinoma Papilar , Genética , Patologia , Cirurgia Geral , Fatores Etários , Cromossomos Humanos Par 18 , Genética , Neoplasias do Colo , Genética , Patologia , Cirurgia Geral , Intervalo Livre de Doença , Seguimentos , Perda de Heterozigosidade , Gradação de Tumores , Estadiamento de Neoplasias , Modelos de Riscos Proporcionais , Taxa de SobrevidaRESUMO
<p><b>BACKGROUND AND OBJECTIVE</b>Although surgery is the only possible means to cure gastric cancer, the prognosis is often discrepant. The American Joint Committee on Cancer / International Union against Cancer (AJCC/UICC) published the TNM classification of Malignant Tumors (seventh edition) for gastric cancer recently. This study aimed to use this new edition staging system to investigate the prognostic factors for gastric cancer.</p><p><b>METHODS</b>The clinicopathologic data of 980 patients with gastric cancer treated by surgical resection in our hospital between January 2000 and December 2006 were analyzed retrospectively. The overall survival rate was determined by using Kaplan-Meier method and log-rank test was used to determine significance. The prognosis was analyzed using univariate analysis and multivariate analysis with the Cox proportional hazards model. The 6th and 7th edition AJCC/UICC TNM staging systems were used to compare the survival outcomes for the cohort of patients.</p><p><b>RESULTS</b>The overall 1-, 3-, 5-year survival rates for the whole group were 82.5%, 58.7%, and 52.6%. The 5-year survival rates for patients with pTNM stage I, II, III, and IV disease classified by the 7th edition staging system were 93.2%, 72.4%, 39.1%, and 5.2%, respectively. In both univariate analysis and Cox multivariate analysis, age, tumor site, tumor size, histological type, resection type, radical resection, lymphatic/venous invasion, depth of invasion, nodal status, metastasis, retrieved lymph nodes, metastatic lymph node ratio, and adjuvant chemotherapy were prognostic factors with these patients.</p><p><b>CONCLUSION</b>Compared with the 6th edition system, the new edition of TNM staging system for gastric cancer can accurately predict the survival after operation.</p>
