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1.
Climacteric ; 25(5): 483-489, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35420045

RESUMO

OBJECTIVE: This study evaluated the construct validity of the Depression Anxiety Stress Scales-21 (DASS-21) for menopausal women in Indonesia. METHODS: This cross-sectional study included 236 women aged 45-60 years and assessed internal consistency using Cronbach's α. The study used convenience sampling. Test-retest reliability was measured twice on an extra 30 women at 1-week and 2-week intervals. Confirmatory factor analysis (CFA) was employed to investigate its structural model fit. RESULTS: The intraclass correlation coefficient for the test-retest reliability ranged between 0.95 and 0.96. The overall Cronbach's α coefficient of the DASS-21 was 0.95. The CFA results indicated that the goodness-of-fit index was 0.85, comparative fit index was 0.95, root-mean-square error of approximation was 0.07, related fit index was 0.91 and normed fit index was 0.92. CONCLUSIONS: This study's results indicated that the DASS-21 has satisfactory validity and reliability for detecting depression, anxiety and stress in menopausal women in Indonesia.


Assuntos
Ansiedade , Depressão , Ansiedade/diagnóstico , Estudos Transversais , Depressão/diagnóstico , Feminino , Humanos , Indonésia , Menopausa , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
2.
Climacteric ; 22(5): 454-459, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-30810401

RESUMO

Objective: This study assessed the construct validity of the Menopause Rating Scale (MRS) in Indonesia. Methods: The study included 240 women aged over 45 years in Indonesia. The MRS measures psychological, somatic-vegetative, and urogenital symptoms using 11 items obtained from participants' daily symptom records. The intraclass correlation coefficient (ICC) and Cronbach's alpha coefficient were measured to examine the test-retest reliability and internal consistency reliability. The test-retest reliability was evaluated by an extra 30 participants twice at 2-week intervals. For construct validity, exploratory factor analysis (EFA) was employed to assess factor structure and confirmatory factor analysis (CFA) was used to evaluate the structural model fit of the MRS. Results: The ICC for the test-retest reliability ranged between 0.90 and 0.95. The Cronbach alpha coefficients in the somatic-vegetative, psychological, and urogenital dimensions were 0.92, 0.93, and 0.95, respectively. The Kaiser-Meyer-Olkin value was 0.96, and the Bartlett's test of sphericity was statistically significant and adequate for EFA. CFA was tested using the second-order model with three first-order factors and yielded an excellent model fit. Conclusion: Results indicated that the brief questionnaire of the MRS possesses acceptable construct validity for evaluating menopause symptoms in Indonesian women.


Assuntos
Menopausa/psicologia , Psicometria , Índice de Gravidade de Doença , Estudos Transversais , Análise Fatorial , Feminino , Humanos , Indonésia , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Inquéritos e Questionários
3.
Transplant Proc ; 50(9): 2606-2610, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30401360

RESUMO

BACKGROUND: The safety of the living donor in living-donor liver transplantation (LDLT) is always the first priority, meanwhile, the graft-to-recipient weight ratio (GRWR) and the anatomy of the liver allograft must also not be compromised in order to warrant tranplatation success. When it comes to the allograft of the right lobe of the liver without the middle hepatic vein (R-M), the outflow and adequate drainage for the territory of middle hepatic vein (MHV) is one critical concern. Despite publications in some high-volume transplant centers on the positive results of using expanded polytetrafluoroethylene (ePTFE) grafts to substitute those of autologous veins, complications related to the ePTFE graft have not been well discussed. METHODS: From July 2012 to June 2016, 129 adult patients who underwent living donor liver transplantation in Taipei Veterans General Hospital were analyzed. There were 3 cases of adjacent organ erosion with gas bubbles in the lumen of an ePTFE graft, including gastrointestinal (GI) tract penetration in 2 out of the first 15 cases that used the venous graft of ringed expanded polytetrafluoroethylene (rPTFE). The patient survival rate during this period was compared and radiological findings of rPTFE function and clinical signs of erosion with infection were also examined to raise the concerns of safety as well as early detection of complications of rPTFE. RESULTS: The overall 1-year patient survival rate was 90%, of which the right lobe wih MHV (R+M) group was 93.5% and the R-M group was 91.9%. For the mean of GRWR, the R+M group was 1.05 ± 0.19 and R-M group was 1.19 ± 0.27, while those who needed reconstruction with vein grafts was 0.96 ± 0.11. Among the R-M group, 24 out of 88 cases (27.3%) needed reconstruction of MHV tributaries. Of the 24 cases, 15 cases were done with rPTFE and the 1-year patient survival rate of the rPTFE group was 73%, which is significantly worse (P = .008) than the non-rPTFE (89%) and non-reconstructed (97%) groups. The mean GRWR is significantly higher (P = .001) in the non-reconstructed group (1.19 ± 0.27) than in the rPTFE (0.99 ± 0.11) and non-rPTFE (0.94 ± 0.11) groups. The venous grafts patency rate between the different graft types is no different, and there is also significance in warm ischemic time (P = .009) between the non-reconstructed (49 ± 15), rPTFE (81 ± 51), and non-rPTFE (56 ± 18) groups in the mean minutes. CONCLUSION: In cases of fever of unknown cause in patients receiving LDLT with rPTFE graft, a regular computed tomography (CT) scan with contrast and gas bubbles within the graft lumen is the best way for early detection of graft related infection and suspicious GI tract penetration. To decrease the risks of tissue reaction induced by ePTFE graft in LDLT, omentum patches or other inert agents can be introduced as a buffer between the graft and adjacent organs, especially the GI tracts. However, research in material science shall be explored to solve the problem in the future.


Assuntos
Prótese Vascular , Transplante de Fígado/efeitos adversos , Transplante de Fígado/métodos , Doadores Vivos , Complicações Pós-Operatórias/etiologia , Adulto , Prótese Vascular/efeitos adversos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Politetrafluoretileno , Complicações Pós-Operatórias/diagnóstico , Tomografia Computadorizada por Raios X/métodos
4.
Int J Obstet Anesth ; 34: 10-14, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29519667

RESUMO

BACKGROUND: This study set out to compare the onset and duration of rocuronium-induced neuromuscular blockade in second trimester pregnant women and non-pregnant women receiving general anesthesia. METHODS: Forty-seven pregnant (Group P) and forty-seven non-pregnant (Group C) women were enrolled. Anesthesia was induced with propofol 2.0 mg/kg and rocuronium 0.6 mg/kg, and neuromuscular blockade was assessed with an accelerometric sensor using train-of-four stimulation (TOF-Watch® SX). Tracheal intubation was performed at maximum depression of the first twitch (T1) and anesthesia was maintained with sevoflurane 1.5-2.5% and 50% oxygen in air. We recorded the times to maximum T1 depression and 5% and 25% T1 recovery, as well as the mean arterial pressure and heart rate at baseline, injection of rocuronium, intubation, and 5% and 25% T1 recovery. RESULTS: The onset of rocuronium-induced neuromuscular blockade (time to maximum T1 depression) did not differ significantly between the groups. The duration (time to 25% T1 recovery) was significantly longer in Group P than in Group C (45.7 ±â€¯12.9 min vs 40.6 ±â€¯10.4 min, P <0.037). During the recovery period from the blockade, the mean arterial pressure was significantly lower in Group P than in Group C. CONCLUSION: Our data showed that the rocuronium-induced neuromuscular blockade did not significantly differ in onset but lasted significantly longer in second trimester pregnant women compared with non-pregnant women.


Assuntos
Androstanóis , Bloqueio Neuromuscular/métodos , Fármacos Neuromusculares não Despolarizantes , Segundo Trimestre da Gravidez , Adulto , Período de Recuperação da Anestesia , Anestesia Geral , Pressão Arterial/efeitos dos fármacos , Feminino , Frequência Cardíaca/efeitos dos fármacos , Humanos , Intubação Intratraqueal , Gravidez , Rocurônio
5.
Clin Exp Immunol ; 180(3): 509-19, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25652232

RESUMO

Infants exposed to maternal HIV-1 provide an opportunity to assess correlates of HIV-1-specific interferon (IFN)-γ responses and may be informative in the development of HIV-1 vaccines. HIV-1-infected women with CD4 counts 200-500 cells/mm(3) were randomized to short-course zidovudine/nevirapine (ZDV/NVP) or highly active anti-retroviral therapy (HAART) between 2003 and 2005. Maternal plasma and breastmilk HIV-1 RNA and DNA were quantified during the first 6-12 months postpartum. HIV-1 gag peptide-stimulated enzyme-linked immunospot (ELISPOT) assays were conducted in HIV-1-exposed, uninfected infants (EU), and correlates were determined using regression and generalized estimating equations. Among 47 EU infants, 21 (45%) had ≥1 positive ELISPOT result during follow-up. Infants had a median response magnitude of 177 HIV-1-specific spot-forming units (SFU)/106 peripheral blood mononuclear cells (PBMC) [interquartile range (IQR)=117-287] directed against 2 (IQR = 1-3) gag peptide pools. The prevalence and magnitude of responses did not differ by maternal anti-retroviral (ARV) randomization arm. Maternal plasma HIV-1 RNA levels during pregnancy (P=0.009) and breastmilk HIV-1 DNA levels at 1 month (P=0.02) were associated with a higher magnitude of infant HIV-1-specific ELISPOT responses at 1 month postpartum. During follow-up, concurrent breastmilk HIV-1 RNA and DNA (cell-free virus and cell-associated virus, respectively) each were associated positively with magnitude of infant HIV-1-specific responses (P=0.01). Our data demonstrate the importance of antigenic exposure on the induction of infant HIV-1-specific cellular immune responses in the absence of infection.


Assuntos
Infecções por HIV/imunologia , Infecções por HIV/virologia , HIV-1/imunologia , Leite Humano/virologia , Carga Viral , Adulto , Fármacos Anti-HIV/uso terapêutico , Terapia Antirretroviral de Alta Atividade , Contagem de Linfócito CD4 , Feminino , Infecções por HIV/tratamento farmacológico , Infecções por HIV/metabolismo , Humanos , Imunidade Celular , Lactente , Recém-Nascido , Interferon gama/sangue , Quênia , Gravidez , Adulto Jovem
6.
Clin Microbiol Infect ; 20(10): O721-9, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24330047

RESUMO

In patients with community-onset acute pyelonephritis (CO-APN), assessing the risk factors for poor clinical response after 72 h of antibiotic treatment (early clinical failure) is important. The objectives of this study were to define those risk factors, and to assess whether early clinical failure influences mortality and treatment outcomes. We prospectively collected the clinical and microbiological data of women with CO-APN in South Korea from March 2010 to February 2012. The numbers of cases in the early clinical success and early clinical failure groups were 840 (79.1%) and 222 (20.9%), respectively. Final clinical failure and mortality were higher in the early clinical failure group than in the early clinical success group (14.9% vs 2.3%, p <0.001; 6.8% vs 0.1%, p 0.001, respectively). In a multiple logistic regression model, the risk factors for early clinical failure among the total 1062 patients were diabetes mellitus (OR 1.5; 95% CI 1.1-2.1), chronic liver diseases (OR 3.3; 95% CI 1.6-6.7), malignancy (OR 2.2; 95% CI 1.1-4.4), Pitt score ≥2 (OR 2.5; 95% CI 1.6-3.8), presence of azotaemia (OR 1.8; 95% CI 1.2-2.7), white blood cell count ≥20 000/mm(3) (OR 2.5; 95% CI 1.6-4.0), serum C-reactive protein level ≥20 mg/dL (OR 1.7; 95% CI 1.2-2.4), and history of antibiotic usage within the previous year (OR 1.5; 95% CI 1.1-2.2). Analysing the subgroup of 743 patients with CO-APN due to Enterobacteriaceae, fluoroquinolone resistance of the uropathogen was another factor associated with early clinical failure (OR 1.7; 95% CI 1.1-2.5). Simple variables of underlying diseases, previous antibiotic usage and initial laboratory test outcomes can be used to decide on the direction of treatment in CO-APN.


Assuntos
Antibacterianos/administração & dosagem , Pielonefrite/tratamento farmacológico , Pielonefrite/mortalidade , Adulto , Idoso , Infecções Comunitárias Adquiridas/tratamento farmacológico , Infecções Comunitárias Adquiridas/mortalidade , Feminino , Humanos , Pessoa de Meia-Idade , Estudos Prospectivos , Análise de Regressão , República da Coreia/epidemiologia , Fatores de Risco , Índice de Gravidade de Doença , Fatores de Tempo , Falha de Tratamento
7.
Infection ; 41(3): 603-12, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23504297

RESUMO

OBJECTIVES: The aim of this study was to determine the risk factors and clinical characteristics of community-acquired acute pyelonephritis (CA-APN) caused by extended-spectrum ß-lactamase (ESBL)-producing organisms. METHODS: From March 2010 to February 2011, patients with CA-APN were recruited in 11 hospitals in South Korea. Clinical and microbiological data were collected prospectively, and the ESBLs and multilocus sequence types of the ESBL-producing Escherichia coli were characterized. Comparison between CA-APN caused by ESBL-producing Enterobacteriaceae and those by non-ESBL-producing organisms was performed. RESULTS: A total of 566 patients were recruited. Enterobacteriaceae were detected in 526 patients. Forty-six isolates (46/526, 8.7 %) were positive for ESBLs. Clinical and microbiological failure did not differ between the two groups, despite there being fewer patients with ESBL-positive isolates provided with appropriate antibiotics initially (19.6 vs. 93.8 %, p < 0.001). However, the duration of hospitalization was longer in the ESBL group (10.5 vs. 7.0 days, p = 0.012). In a logistic regression model, Charlson score ≥1 point [odds ratio (OR) 3.4, 95 % confidence interval (CI) 1.6-7.0, p = 0.001], antibiotics usage during the previous year (OR 3.1, 95 % CI 1.4-7.2, p = 0.008), and urinary catheterization during the previous month (OR 4.4, 95 % CI 1.1-17.6, p = 0.035) were associated with the risks of CA-APN by ESBL producers. CTX-M-15 (48 %) and CTX-M-14 (38 %) were the most common ESBLs. ST131 was the most common clone (7/24, 29.1 %), which was more frequently resistant to cefepime, fosfomycin, and temocillin. CONCLUSIONS: The risk factors for CA-APN by ESBL producers were Charlson score ≥1 point, antibiotics usage during the previous year, and urinary catheterization during the previous month.


Assuntos
Infecções Comunitárias Adquiridas/epidemiologia , Infecções por Enterobacteriaceae/epidemiologia , Enterobacteriaceae/enzimologia , Pielonefrite/epidemiologia , beta-Lactamases/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Infecções Comunitárias Adquiridas/microbiologia , Infecções Comunitárias Adquiridas/patologia , Enterobacteriaceae/classificação , Enterobacteriaceae/genética , Enterobacteriaceae/isolamento & purificação , Infecções por Enterobacteriaceae/microbiologia , Infecções por Enterobacteriaceae/patologia , Humanos , Pessoa de Meia-Idade , Tipagem de Sequências Multilocus , Estudos Prospectivos , Pielonefrite/microbiologia , Pielonefrite/patologia , República da Coreia/epidemiologia , Fatores de Risco
8.
Br J Cancer ; 107(9): 1624-30, 2012 Oct 23.
Artigo em Inglês | MEDLINE | ID: mdl-23033006

RESUMO

BACKGROUND: We assessed the association of human papillomavirus (HPV) infection and cervical intraepithelial neoplasia (CIN) with various characteristics, CD4 count and use of combination antiretroviral therapy (cART) among HIV-positive women. METHODS: Cross-sectional study of 498 HIV-positive women who underwent HPV PCR-based testing, cytology, and systematic cervical biopsy. RESULTS: In all, 68.7% of women were HPV-positive, 52.6% had high-risk (hr) HPV, and 40.2% multiple type infections. High-risk human papillomavirus-positivity did not vary significantly by age but it was negatively associated with education level. The most frequent types in 113 CIN2/3 were HPV16 (26.5%), HPV35 (19.5%), and HPV58 (12.4%). CD4 count was negatively associated with prevalence of hrHPV (P<0.001) and CIN2/3 among non-users of cART (P=0.013). Combination antiretroviral therapies users (≥2 year) had lower hrHPV prevalence (prevalence ratio (PR) vs non-users=0.77, 95% confidence interval (CI): 0.61-0.96) and multiple infections (PR=0.68, 95% CI: 0.53-0.88), but not fewer CIN2/3. The positive predictive value of hrHPV-positivity for CIN2/3 increased from 28.9% at age <35 years to 53.3% in ≥45 years. CONCLUSION: The burden of hrHPV and CIN2/3 was high and it was related to immunosuppression level. Combination antiretroviral therapies ( ≥2 year) use had a favourable effect on hrHPV prevalence but cART in our population may have been started too late to prevent CIN2/3.


Assuntos
Infecções por HIV/epidemiologia , Infecções por Papillomavirus/epidemiologia , Displasia do Colo do Útero/epidemiologia , Neoplasias do Colo do Útero/epidemiologia , Adulto , Estudos de Coortes , Estudos Transversais , Feminino , Infecções por HIV/virologia , Humanos , Quênia/epidemiologia , Pessoa de Meia-Idade , Infecções por Papillomavirus/virologia , Prevalência , Neoplasias do Colo do Útero/virologia , Displasia do Colo do Útero/virologia
9.
J Viral Hepat ; 18(10): e447-52, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21914062

RESUMO

Widespread use of lamivudine in antiretroviral therapy may lead to hepatitis B virus resistance in HIV-HBV coinfected patients from endemic settings where tenofovir is not readily available. We evaluated 389 Kenyan HIV-infected adults before and for 18 months after starting highly active antiretroviral therapy with stavudine, lamivudine and nevirapine. Twenty-seven (6.9%) were HBsAg positive and anti-HBs negative, 24 were HBeAg negative, and 18 had HBV DNA levels ≤ 10,000 IU/mL. Sustained HBV suppression to <100 IU/mL occurred in 89% of 19 evaluable patients. Resistance occurred in only two subjects, both with high baseline HBV DNA levels. Lamivudine resistance can emerge in the setting of incomplete HBV suppression but was infrequently observed among HIV-HBV coinfected patients with low baseline HBV DNA levels.


Assuntos
Fármacos Anti-HIV/administração & dosagem , Farmacorresistência Viral , Infecções por HIV/tratamento farmacológico , Vírus da Hepatite B/efeitos dos fármacos , Hepatite B/tratamento farmacológico , Lamivudina/administração & dosagem , Adulto , Terapia Antirretroviral de Alta Atividade/métodos , DNA Viral/sangue , Feminino , Infecções por HIV/complicações , Hepatite B/complicações , Hepatite B/virologia , Anticorpos Anti-Hepatite B/sangue , Antígenos de Superfície da Hepatite B/sangue , Vírus da Hepatite B/isolamento & purificação , Humanos , Quênia , Masculino , Nevirapina/administração & dosagem , Estavudina/administração & dosagem , Resultado do Tratamento , Carga Viral
10.
Anaesth Intensive Care ; 39(4): 611-7, 2011 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21823378

RESUMO

This study was designed to determine the optimal dose of remifentanil required for the successful insertion of Streamlined Liner of the Pharynx Airway (SLIPA) and to compare it to that required for laryngeal mask airway (LMA) insertion in patients receiving a propofol infusion at a standard effect-site concentration. Fifty-eight patients scheduled to undergo general anaesthesia were randomly assigned to either the SLIPA (n = 29) or LMA (n = 29) group. All patients were premedicated with midazolam 0.05 mg x kg(-1) and glycopyrrolate 0.004 mg x kg(-1) intramuscularly. After the administration of lignocaine 1 mg x kg(-1) intravenously, a propofol infusion was started at an effect-site concentration of 3.5 microg x ml(-1) with a remifentanil infusion without a neuromuscular blocking agent. The remifentanil dose was determined by the modified up-and-down method starting in each group at 4 ng x ml(-1). Six minutes after induction, the airway device was inserted. Airway device insertion was classified as 'success' or 'failure' based on patient response. From the isotonic regression analysis and bootstrap distribution, the EC50 of remifentanil for SLIPA and LMA were 0.93 ng x ml(-1) (95% confidence interval [CI] 0.81 to 1.50 ng x ml(-1) and 1.36 ng x ml(-1) (95% CI 1.19 to 2.06 ng x ml(-1)) respectively, and the EC95 for SLIPA and LMA insertions were 1.90 ng x ml(-1) (95% CI 1.39 to 1.95) and 2.43 ng x ml(-1) (95% CI 1.80 to 2.46 ng x ml(-1)) respectively. Using the 83% CIs from the bootstrap distribution, EC50 for SLIPA was significantly less than that of LMA (0.83 to 1.23 vs 1.26 to 2.00, respectively) (P < 0.05). These findings suggest that the insertion of SLIPA needs about a 32% lower depth of anaesthesia than LMA insertion.


Assuntos
Manuseio das Vias Aéreas/instrumentação , Anestésicos Intravenosos/farmacologia , Máscaras Laríngeas , Piperidinas/farmacologia , Propofol/administração & dosagem , Adolescente , Adulto , Anestesia Geral , Anestésicos Intravenosos/administração & dosagem , Anestésicos Intravenosos/farmacocinética , Pressão Sanguínea/efeitos dos fármacos , Índice de Massa Corporal , Equipamentos Descartáveis , Relação Dose-Resposta a Droga , Entropia , Feminino , Frequência Cardíaca/efeitos dos fármacos , Hemodinâmica/fisiologia , Humanos , Infusões Intravenosas , Masculino , Pessoa de Meia-Idade , Piperidinas/administração & dosagem , Piperidinas/farmacocinética , Remifentanil , Falha de Tratamento , Adulto Jovem
11.
Ann Trop Med Parasitol ; 104(1): 73-80, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20149294

RESUMO

As there appeared to be no data available on Toxocara canis infection in the children of Swaziland, a serological survey of T. canis infection was recently conducted among 92 children aged 3-12 years from rural slums in the low- and middle-veld. A child was considered seropositive if, in western blots based on the excretory-secretory antigens of larval T. canis, his or her serum gave a positive result when diluted 1 : 64. Forty-one (44.6%) of the children were found seropositive. There were no statistically significant differences in seroprevalence between the 49 boys and 43 girls investigated (46.9% v. 41.8%) or between the eight subjects aged 12 years and the 47 aged < or = 5 years (62.5% v. 38.3%); the corresponding odds ratios were 0.81 (95% confidence interval=0.36-1.86; P=0.62) and 2.69 (95% confidence interval=0.57-12.62; P=0.20), respectively. The 66 subjects from the middleveld were, however, significantly more likely to be seropositive than the 26 subjects from the lowveld (54.5% v. 19.2%; odds ratio=5.04, with a 95% confidence interval of 1.70-14.98; P<0.01). It seems likely that T. canis infection is common among the children who live in slums in Swaziland, particularly in the country's middleveld, probably as the result of poor hygiene and poor sanitation.


Assuntos
Antígenos de Helmintos/imunologia , Proteínas de Helminto/imunologia , Toxocara canis/imunologia , Toxocaríase/epidemiologia , Adulto , Distribuição por Idade , Animais , Antígenos de Helmintos/isolamento & purificação , Western Blotting , Criança , Pré-Escolar , Reações Cruzadas , Doenças do Cão/parasitologia , Doenças do Cão/transmissão , Cães , Ensaio de Imunoadsorção Enzimática/métodos , Essuatíni/epidemiologia , Feminino , Proteínas de Helminto/isolamento & purificação , Humanos , Masculino , Áreas de Pobreza , Saneamento/normas , Estudos Soroepidemiológicos , Toxocaríase/imunologia , Toxocaríase/transmissão , População Urbana
12.
Oncogene ; 29(10): 1431-50, 2010 Mar 11.
Artigo em Inglês | MEDLINE | ID: mdl-20023697

RESUMO

The p53-inducible gene 3 (PIG3) is originally isolated as a p53 downstream target gene, but its function remains unknown. Here, we report a role of PIG3 in the activation of DNA damage checkpoints, after UV irradiation or radiomimetic drug neocarzinostatin (NCS). We show that depletion of endogenous PIG3 sensitizes cells to DNA damage agents, and impaired DNA repair. PIG3 depletion also allows for UV- and NCS-resistant DNA synthesis and permits cells to progress into mitosis, indicating that PIG3 knockdown can suppress intra-S phase and G2/M checkpoints. PIG3-depleted cells show reduced Chk1 and Chk2 phosphorylation after DNA damage, which may directly contribute to checkpoint bypass. PIG3 exhibited diffuse nuclear staining in the majority of untreated cells and forms discrete nuclear foci in response to DNA damage. PIG3 colocalizes with gamma-H2AX and 53BP1 to sites of DNA damage after DNA damage, and binds to a gamma-H2AX. Notably, PIG3 depletion decreases the efficient induction and maintenance of H2AX phosphorylation after DNA damage. Moreover, PIG3 contributes to the recruitment of 53BP1, Mre11, Rad50 and Nbs1 to the sites of DNA break lesions in response to DNA damage. Our combined results suggest that PIG3 is a critical component of the DNA damage response pathway and has a direct role in the transmission of the DNA damage signal from damaged DNA to the intra-S and G2/M checkpoint machinery in human cells.


Assuntos
Ciclo Celular/fisiologia , Dano ao DNA , Reparo do DNA/fisiologia , Peptídeos e Proteínas de Sinalização Intracelular/metabolismo , Proteínas Proto-Oncogênicas/metabolismo , Antibióticos Antineoplásicos/farmacologia , Apoptose/efeitos dos fármacos , Apoptose/efeitos da radiação , Western Blotting , Ciclo Celular/efeitos dos fármacos , Ciclo Celular/efeitos da radiação , Linhagem Celular Tumoral , Quinase 1 do Ponto de Checagem , Quinase do Ponto de Checagem 2 , Reparo do DNA/efeitos dos fármacos , Reparo do DNA/efeitos da radiação , Citometria de Fluxo , Células HCT116 , Células HeLa , Histonas/metabolismo , Humanos , Peptídeos e Proteínas de Sinalização Intracelular/genética , Fosforilação/efeitos dos fármacos , Fosforilação/efeitos da radiação , Proteínas Quinases/metabolismo , Proteínas Serina-Treonina Quinases/metabolismo , Proteínas Proto-Oncogênicas/genética , Interferência de RNA , Proteína 1 de Ligação à Proteína Supressora de Tumor p53 , Raios Ultravioleta , Zinostatina/farmacologia
13.
Br J Pharmacol ; 158(7): 1743-52, 2009 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-19845673

RESUMO

BACKGROUND AND PURPOSE: Earlier we reported that 7,8-dihydro-8-oxo-deoxyguanosine (8-oxo-dG), an oxidatively modified guanine nucleoside, exerted anti-inflammatory activity through inactivation of the GTP binding protein, Rac. In the present study, the effects of 8-oxo-dG were investigated on responses to antigen challenge in sensitized mice, as Rac is also involved at several steps of the immune process including antigen-induced release of mediators from mast cells. EXPERIMENTAL APPROACH: Mice were sensitized and challenged with ovalbumin without or with oral administration of 8-oxo-dG during the challenge. Effects of 8-oxo-dG were assessed by measuring lung function, cells and cytokines in broncho-alveolar lavage fluid (BALF) and serum levels of antigen-specific IgE. Rac activity in BALF cells was also measured. KEY RESULTS: 8-oxo-dG inhibited the increased airway resistance and decreased lung compliance of sensitized and challenged mice to the levels of non-sensitized control mice and lowered the increased leukocytes particularly, eosinophils, in BALF. Furthermore, 8-oxo-dG suppressed allergy-associated immune responses, such as raised anti- ovalbumin IgE antibody in serum, increased expression of CD40 and CD40 ligand in lung, increased interleukin-4, -5, -13, interferon-gamma and tumour necrosis factor-alpha in BALF and mRNA levels of these cytokines in BALF cells, dose-dependently. The corresponding purine, 8-oxo-guanine, showed no effects in the same experiments. Finally, 8-oxo-dG, but not 8-oxo-guanine, inhibited the increased Rac activity in sensitized and challenged mice. CONCLUSION AND IMPLICATIONS: 8-Oxo-dG had anti-allergic actions that might be mediated by Rac inactivation. This compound merits further evaluation of its therapeutic potential in allergic asthma.


Assuntos
Antialérgicos/farmacologia , Desoxiguanosina/análogos & derivados , Imunoglobulina E/imunologia , Proteínas rac de Ligação ao GTP/metabolismo , 8-Hidroxi-2'-Desoxiguanosina , Administração Oral , Animais , Antialérgicos/administração & dosagem , Asma/tratamento farmacológico , Asma/imunologia , Líquido da Lavagem Broncoalveolar/imunologia , Citocinas/metabolismo , Desoxiguanosina/administração & dosagem , Desoxiguanosina/farmacologia , Relação Dose-Resposta a Droga , Feminino , Guanina/análogos & derivados , Guanina/farmacologia , Mastócitos/efeitos dos fármacos , Mastócitos/imunologia , Mastócitos/metabolismo , Camundongos , Camundongos Endogâmicos BALB C , Ovalbumina , Testes de Função Respiratória
14.
Bioinspir Biomim ; 4(3): 036001, 2009 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-19567970

RESUMO

Burst-and-coast swimming performance in fish-like locomotion is studied via two-dimensional numerical simulation. The numerical method used is the collocated finite-volume adaptive Cartesian cut-cell method developed previously. The NACA00xx airfoil shape is used as an equilibrium fish-body form. Swimming in a burst-and-coast style is computed assuming that the burst phase is composed of a single tail-beat. Swimming efficiency is evaluated in terms of the mass-specific cost of transport instead of the Froude efficiency. The effects of the Reynolds number (based on the body length and burst time), duty cycle and fineness ratio (the body length over the largest thickness) on swimming performance (momentum capacity and the mass-specific cost of transport) are studied quantitatively. The results lead to a conclusion consistent with previous findings that a larval fish seldom swims in a burst-and-coast style. Given mass and swimming speed, a fish needs the least cost if it swims in a burst-and-coast style with a fineness ratio of 8.33. This energetically optimal fineness ratio is larger than that derived from the simple hydromechanical model proposed in literature. The calculated amount of energy saving in burst-and-coast swimming is comparable with the real-fish estimation in the literature. Finally, the predicted wake-vortex structures of both continuous and burst-and-coast swimming are biologically relevant.


Assuntos
Biomimética/métodos , Metabolismo Energético/fisiologia , Peixes/fisiologia , Modelos Biológicos , Esforço Físico/fisiologia , Natação/fisiologia , Animais , Simulação por Computador
15.
Thyroid ; 17(3): 267-9, 2007 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-17381361

RESUMO

Metastatic disease to the thyroid is not an unusual finding at autopsies, but it is rare to be found in clinical situations. We present the first case of adenocarcinoma of the proximal esophagus presenting as a thyroid mass in a young healthy patient without any previous history of malignancy. This case highlights the importance of thorough work-up when addressing a thyroid mass. A high index of suspicion should be maintained in order to be able to detect unusual etiologies of thyroid conditions, especially when histopathology is not characteristic for primary thyroidal malignancies.


Assuntos
Adenocarcinoma/diagnóstico , Diagnóstico Diferencial , Neoplasias Esofágicas/diagnóstico , Neoplasias da Glândula Tireoide/diagnóstico , Adulto , Biópsia , Humanos , Masculino , Metástase Neoplásica , Prognóstico , Tomografia Computadorizada por Raios X
16.
Surg Endosc ; 21(2): 234-7, 2007 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-17160652

RESUMO

BACKGROUND: Surgical experience and outcomes for hand-assisted laparoscopic colectomy were evaluated to define a learning curve. METHODS: This study included 60 patients who underwent hand-assisted laparoscopic colectomies performed by a single surgeon. They were analyzed as three consecutive equal groups: A, B, and C. Pearson's chi-square test and one-way analysis of variance (ANOVA) were used to compare differences in demographics and perioperative parameters. Operative times were analyzed to document the learning curve for the procedure. RESULTS: There were no significant differences between the three groups in terms of age, sex, operative procedure, or comorbidity. Groups B and C showed significantly shorter operative times, significantly earlier recoveries of gastrointestinal function, less blood loss, and shorter hospital stays than group A. The incidence of operative complications was not significantly different among the three groups (35% vs 5% vs 15%; p = 0.07). CONCLUSIONS: Approximately 21 to 25 cases were needed to achieve proficiency in this series.


Assuntos
Colectomia/métodos , Doenças do Colo/cirurgia , Colonoscópios , Colonoscopia/métodos , Adulto , Idoso , Análise de Variância , Distribuição de Qui-Quadrado , Colectomia/instrumentação , Doenças do Colo/patologia , Neoplasias do Colo/patologia , Neoplasias do Colo/cirurgia , Feminino , Seguimentos , Humanos , Aprendizagem , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Dor Pós-Operatória/fisiopatologia , Complicações Pós-Operatórias/epidemiologia , Probabilidade , Estudos Prospectivos , Resultado do Tratamento
17.
J Infect ; 54(6): 578-83, 2007 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-17175028

RESUMO

OBJECTIVES: The high incidence of invasive liver abscess caused by Klebsiella pneumoniae in Taiwan, contrasted with the rareness of this disease in Western countries, has aroused special interest. There have been few detailed reports from other Asian countries. To investigate a current epidemiology of K. pneumoniae liver abscess in Korea and to determine K serotype distribution in K. pneumoniae strains causing liver abscess, we performed a nationwide prospective study. METHODS: Community-acquired, culture-proven liver abscess cases were enrolled between 2004 and 2005. Etiologies and clinical features were analyzed. K. pneumoniae isolates were serotyped according to K antigen. Meta-analysis was done to determine the time trend of the etiologies of liver abscess in Korea. RESULTS: Out of 371 cases collected prospectively, 290 (78.2%) were caused by K. pneumoniae. Most K. pneumoniae liver abscesses were monomicrobial. Diabetes mellitus was the most common underlying disease (39.9%). Distant metastatic infections were frequently observed (8.7%). magA PCR revealed that 95 (59.4%) out of 160 K. pneumoniae isolates belonged to the K1 serotype. CONCLUSIONS: Our study indicates that K. pneumoniae has emerged as a major etiologic agent of liver abscess in Korea, and these emerging infections seem to be attributable to invasive K. pneumoniae strains with capsular K1 serotype.


Assuntos
Doenças Transmissíveis Emergentes , Infecções por Klebsiella/epidemiologia , Klebsiella pneumoniae/isolamento & purificação , Abscesso Hepático/epidemiologia , Idoso , Antígenos de Bactérias/imunologia , Sequência de Bases , Primers do DNA , Feminino , Humanos , Infecções por Klebsiella/microbiologia , Klebsiella pneumoniae/imunologia , Coreia (Geográfico)/epidemiologia , Abscesso Hepático/microbiologia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
19.
Surg Endosc ; 18(3): 554-6, 2004 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-15108694

RESUMO

Traditional surgical management of a chronic enterocutaneous fistula requires laparotomy, but the optimal site of incision is unclear. Laparoscopy and adhesiolysis may offer an alternative approach. Two cases of non-healing enterocutaneous fistula within chronic, granulating wounds are described. The laparoscope was placed subcostally using the Hasson technique with additional ports placed under direct vision. After clearing the anterior abdominal wall of all but the fistula-containing bowel, an incision was made circumferentially around the granulation bed. Resection and primary anastomosis was performed in standard fashion. Lateral component separation allowed primary wound closure. Both patients were discharged without sequelae and doing well at last follow-up (mean 12 months). A laparoscopic approach to non-healing enterocutaneous fistulas seems safe and technically feasible. When combined with lateral component separation, it may result in reduction of inadvertent enterotomies and optimal management of the wound without the use of prosthetic mesh.


Assuntos
Parede Abdominal/cirurgia , Fístula Cutânea/cirurgia , Fístula Intestinal/cirurgia , Laparoscopia/métodos , Complicações Pós-Operatórias/cirurgia , Adenocarcinoma/tratamento farmacológico , Adenocarcinoma/cirurgia , Anastomose Cirúrgica/métodos , Quimioterapia Adjuvante , Doença Crônica , Colectomia , Colo Transverso/cirurgia , Neoplasias do Colo/tratamento farmacológico , Neoplasias do Colo/cirurgia , Colostomia , Terapia Combinada , Doença Diverticular do Colo/complicações , Doença Diverticular do Colo/cirurgia , Estudos de Viabilidade , Seguimentos , Hérnia Ventral/etiologia , Hérnia Ventral/cirurgia , Humanos , Perfuração Intestinal/etiologia , Perfuração Intestinal/cirurgia , Masculino , Pessoa de Meia-Idade , Aderências Teciduais/cirurgia , Cicatrização
20.
Surg Endosc ; 18(4): 577-81, 2004 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15026923

RESUMO

BACKGROUND: We compared the perioperative parameters and outcomes achieved with hand-assisted laparoscopic colectomy (HALC) vs open colectomy (OC) for the management of benign and malignant colorectal disease, including cancer patients treated with curative intent. METHODS: Sixty eligible patients were randomized to either HALC (n = 30) or OC (n = 30) treatment groups. We used Pearson's chi-square and two-sample t-tests to compare the differences in demographics and perioperative parameters. RESULTS: There were no significant differences in age, gender distribution, disease pattern, operative procedure, comorbidity, or history of abdominal surgery. The HALC patients had significantly shorter hospital stays and incision lengths, faster recovery of gastrointestinal function, less analgesic use and blood loss, and lower pain scores on postoperative days 1, 3, and 14. There were no significant differences in operative time, complications, or time to return to normal activity. CONCLUSION: Hand-assisted laparoscopic colectomy (HALC) is safe and produces better therapeutic results in terms of perioperative parameters than OC.


Assuntos
Colectomia/métodos , Doenças do Colo/cirurgia , Neoplasias Colorretais/cirurgia , Laparoscopia/métodos , Doenças Retais/cirurgia , Adulto , Idoso , Analgésicos/uso terapêutico , Perda Sanguínea Cirúrgica , Colectomia/estatística & dados numéricos , Procedimentos Cirúrgicos Eletivos/estatística & dados numéricos , Feminino , Mãos , Humanos , Laparoscopia/estatística & dados numéricos , Tempo de Internação/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Dor Pós-Operatória/tratamento farmacológico , Dor Pós-Operatória/epidemiologia , Estudos Prospectivos , Recuperação de Função Fisiológica , Resultado do Tratamento
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