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1.
Heliyon ; 10(2): e24438, 2024 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-38312542

RESUMO

The present study investigated the potential anti-obesity properties of Citrus depressa Hayata (CDH) juice in HBV transgenic mice, as well as the impact of fermentation on the effectiveness of the juice. The results revealed that fermentation increased the levels of polyphenols and hesperidin in CDH juice. The animal study demonstrated that both juices were effective in mitigating the weight gain induced by a high-fat diet by correcting metabolic parameter imbalances, reducing hepatic lipid accumulation, and reversing hepatic immune suppression. Furthermore, fermented juice exhibited superior efficacy in managing body weight and inhibiting the expansion of white adipose tissue (WAT). Fermented juice significantly enhanced adiponectin production and PPARγ expression in WAT, while also reducing hypertrophy. This study offers valuable insights into the potential role of CDH juices in combating obesity associated with high fat consumption and underscores the promise of CDH juice as a functional beverage.

2.
Osteoporos Int ; 35(3): 523-531, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37947843

RESUMO

Most studies investigating the association between physical activity and osteoporosis prevention only focused on specific types of physical activity. This study's evidence regarding the combined effects or interaction of sleep duration and physical activity. The findings emphasize the role of sleep duration and physical activity in association with osteoporosis. PURPOSE: The associations between physical activity, sleep duration, and prevalent osteoporosis in Taiwanese adults were studied in this cross-sectional study. METHODS: The Taiwan Biobank enrolled a community-based cohort of ~ 120,000 volunteers (as of April 30, 2020) between 30 and 76 years of age with no history of cancer. Amongst, bone mineral density (BMD) measures by dual-energy X-ray absorptiometry (DXA) were available in 22,402 participants. After excluding individuals who had no complete data of BMI (n = 23), MET score (n = 207), T-score (n = 8,826), and sleep duration (n = 16), 13,330 subjects were included as the primary cohort. Univariate and multivariable regression analyses were performed to determine the associations between the presence of osteoporosis, physical activity level, sleep duration, and other variables. RESULTS: The results showed that after adjustment, subjects with physical activity < 20 METs/week and ≥ 20 METs/week (aOR = 1.017 and 0.767, respectively) were associated with risk of osteoporosis than those with zero MET. The odds of osteoporosis were not significantly lower in subjects who slept for ≥ 8 h/day (aOR = 0.934,p=0.266). In addition, compared to short sleepers with no physical activity, adults with increased physical activity ≥ 20 METs/week and sleep ≥ 8 h/day had a significantly lowest likelihood of osteoporosis (aOR = 0.702). Those with medium physical activity (< 20 METs/week) plus average sleep duration (6.5-8 h/day) did not have significant higher odds of osteoporosis (aOR = 1.129,p=0.151). CONCLUSION: The findings emphasize the joint role of sleep duration and physical activity in association with osteoporosis. Adults with high physical activity plus high sleep hours have the highest BMD and lowest risk of osteoporosis.


Assuntos
Osteoporose , Duração do Sono , Adulto , Humanos , Taiwan/epidemiologia , Estudos Transversais , Bancos de Espécimes Biológicos , Osteoporose/etiologia , Osteoporose/complicações , Densidade Óssea , Absorciometria de Fóton , Exercício Físico
3.
Nat Prod Res ; : 1-6, 2023 Sep 23.
Artigo em Inglês | MEDLINE | ID: mdl-37740591

RESUMO

Thirty-four phytochemicals were isolated from dry tubers of Bletilla striata Rchb.f. The compounds were classified as bibenzyls 1-14, dihydrophenanthrenes 15, 17, 20, 21, phenanthrenes 16, 18, 19, simple benzoids 22-24, a fatty acid 25, glucosyloxybenzyl 2-isobutylmalates 26-32, and glucosyloxybenzyl cinnamates 33, 34. Compounds 1-4, 7, 8, 11, 12, and 16 inhibited melanogenesis (17.96-55.27%) induced by α-MSH in B16F10 cells at 10-40 µM. However, compounds 9, 10, 17, 18, and 21 exhibited significant cytotoxicity against melanomas, with IC50 values of 12-34 µM. Additionally, compounds 15, 17, 19, 20, 23, 31, and 33 reduced the ROS generation induced by H2O2 in HaCaT cells at 6.25-100 µM. In particular, compounds 15, 19, and 20 strongly inhibited ROS generation, with IC50 values of 2.15-9.48 µM. Consequently, compounds 1-4, 7-12, and 15-21 may be the strongest leads to follow in B. striata extract for further research on the skin disorders, hyperpigmentation, melanoma, and ageing.

4.
Nutrients ; 14(15)2022 Aug 05.
Artigo em Inglês | MEDLINE | ID: mdl-35956379

RESUMO

Consuming a Mediterranean-style diet (MED) is helpful for primary prevention of atherosclerotic cardiovascular disease (ASCVD). However, few studies have compared mortality in ASCVD subjects with different degrees of adherence to the MED diet or have evaluated the contributions of individual diet components. We analyzed National Health and Nutrition Examination Survey (NHANES) participants with a history of coronary heart disease (CHD) or stroke (N = 2052) in a period from 1999 to 2010. Their individual vital status was linked to the National Death Index till the end of 2011. The level of adherence to the MED diet was quantified using a 9-point evaluation score (aMED score). Cox regression models were used to compare the different levels of adherence to the MED diet, and contributions of individual components of the MED diet on cardiovascular, cancer, and all-cause mortality. Among the 2052 subjects with CHD or stroke, 29.0% (596 of 2052) died after a median follow-up of 5.6 years. In Cox regression analysis, higher absolute aMED score (HR 0.798, p = 0.0079) or above median aMED score (score 4-9) (HR 0.646, p = 0.0013) was negatively associated with all-cause mortality. Among various components of the MED diet, intake of more whole grains or nuts was significantly associated with a lower all-cause mortality. In contrast, a higher aMED score was not associated with less cardiovascular mortality. In a secondary analysis that excluded deaths within 2 years of the NHANES study entry, the above median aMED score (score 4-9) was negatively associated with both all-cause and cardiovascular mortality. In conclusion, subjects with a history of CHD or stroke adhering better to the MED diet in the NHANES study had a lower all-cause mortality during follow-ups. Consuming more whole grains or nuts had a lower all-cause mortality. The protective effect of adherence to the MED diet on decreasing cardiovascular mortality was seen only after excluding those who died within first two years of the NHANES study entry.


Assuntos
Doenças Cardiovasculares , Doença das Coronárias , Dieta Mediterrânea , Acidente Vascular Cerebral , Doenças Cardiovasculares/prevenção & controle , Humanos , Inquéritos Nutricionais , Modelos de Riscos Proporcionais , Fatores de Risco , Acidente Vascular Cerebral/prevenção & controle
5.
Nat Prod Res ; 36(12): 3133-3137, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34278895

RESUMO

Three glycosylated stilbenes (1-3), two anthraquinones (4, 5), one lignan (6), five tannins (7-11), two amino acids (12, 13), and one auronol (14) were isolated from the root of Ampelopsis japonica. All compounds, except for 4, 6, and 11 were obtained from this species for the first time. Compounds 6-9 could notably inhibit ROS generations in HaCaT keratinocyte cells with IC50 values of 5.28, 4.83, 0.87, and 1.66 µM, respectively. Compounds 8-10 showed potent DPPH free radical scavenging effects with IC50 values of 14.37, 16.08, and 12.11 µM, individually. In anti-melanogenesis assay, only 8 and 9 could decrease 7.93% and 11.66% melanin contents induced by α-MSH in B16F10 melanoma cells at 40 µM and moderately inhibit tyrosinase activities. By far, galloylhamameloses 8 and 9 were found to exhibit both antioxidant and anti-melanogenesis properties that could be further developed as cosmeceutical agents for skin disorders.


Assuntos
Ampelopsis , Melanoma Experimental , Animais , Antioxidantes/química , Linhagem Celular Tumoral , Melaninas , Monofenol Mono-Oxigenase
6.
Molecules ; 26(19)2021 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-34641450

RESUMO

Three new tuliposides H-J (1-3) and 11 known compounds were obtained from the methanolic extracts of the bulbs of Amana edulis for the first time. Their structures were elucidated by NMR, MS, and IR spectroscopic data, optical rotation, and Mosher's method. The melanogenesis properties of all the isolates were evaluated in B16 melanoma cells. Consequently, tributyl citrate (9) had anti-melanogenesis activity but was cytotoxic toward B16. (+)-Pyroglutamic acid (4), (+)-butyl 5-oxopyrrolidine-2-carboxylate (6), (-)-3-hydroxy-2-methylbutyrolactone (10), and 5-(hydroxymethyl)furfural (12) had increased melanin productions and tyrosinase activities. Those active components could be further studied as the candidates against melanoma and vitiligo for skin diseases or whitening/hypopigmentation for hair.


Assuntos
Glucosídeos/farmacologia , Liliaceae/química , Melanoma Experimental/tratamento farmacológico , Compostos Fitoquímicos/farmacologia , Extratos Vegetais/farmacologia , Animais , Melaninas/metabolismo , Camundongos , Monofenol Mono-Oxigenase/metabolismo , Células Tumorais Cultivadas
7.
J Microbiol Immunol Infect ; 54(5): 801-807, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34217634

RESUMO

BACKGROUND: Coronavirus disease 2019 (COVID-19) manifests symptoms as common etiologies of respiratory tract infections (RTIs). During the pandemic of COVID-19, identifying the etiologies correctly from patients with RTI symptoms was crucial in not only disease control but preventing healthcare system from collapsing. By applying sensitive PCR-based molecular assays, we detected the etiologic agents and delineated the epidemiologic picture of RTIs in the early phase of COVID-19 pandemic. METHODS: From December 2019 to February 2020, we screened patients presented with RTIs using multiplex PCR-based diagnostic assays. Data from pediatric and adult patients were compared with different months and units in the hospital. RESULTS: Of all 1631 patients including 1445 adult and 186 pediatric patients screened, 8 viruses and 4 bacteria were identified. Positive rates were 25% in December, 37% in January, and 20% in February, with pediatric patients having higher positive rates than adults (Ps < 0.001). In pediatric patients, RhV/EnV was the most commonly detected, followed by parainfluenza viruses. Most Mycoplasma pneumoniae infection occurred in pediatric patients. RhV/EnV was the most commonly detected agent in pediatric patients admitted to intensive care units (ICUs), while influenza accounted for the majority of adult cases with critical illness. Noticeably, seasonal coronavirus ranked second in both adult and pediatric patients with ICU admission. CONCLUSION: While we focused on the pandemic of COVID-19, common etiologies still accounted for the majority of RTIs and lead to severe diseases, including other seasonal coronaviruses.


Assuntos
COVID-19/epidemiologia , Surtos de Doenças , Infecções Respiratórias/epidemiologia , Infecções Respiratórias/etiologia , Adulto , COVID-19/diagnóstico , Criança , Humanos , Influenza Humana/diagnóstico , Influenza Humana/epidemiologia , Reação em Cadeia da Polimerase Multiplex , Pandemias , Vírus da Parainfluenza 1 Humana , Vírus da Parainfluenza 2 Humana , Pneumonia por Mycoplasma/diagnóstico , Pneumonia por Mycoplasma/epidemiologia , Estudos Retrospectivos , SARS-CoV-2/genética , SARS-CoV-2/isolamento & purificação , Estações do Ano , Taiwan/epidemiologia
8.
Influenza Other Respir Viruses ; 15(4): 478-487, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33825310

RESUMO

BACKGROUND: Physical distancing and facemask use are worldwide recognized as effective non-pharmaceutical interventions (NPIs) against the coronavirus disease-2019 (COVID-19). Since January 2020, Taiwan has introduced both NPIs but their effectiveness on non-COVID-19 respiratory viruses (NCRVs) remain underexplored. METHODS: This retrospective observational study examined electronic records at a tertiary hospital in northern Taiwan from pre-COVID (January-December 2019) to post-COVID period (January-May 2020). Patients with respiratory syndromes were tested for both enveloped (eg, influenza virus and seasonal coronavirus) and non-enveloped RVs (eg, enterovirus and rhinovirus) using multiplex reverse transcription polymerase chain reaction assays. Monthly positivity rates of NCRVs among adult and pediatric patients were analyzed with comparison between pre- and post-COVID periods. RESULTS: A total of 9693 patients underwent 12 127 multiplex RT-PCR tests. The average positivity rate of NCRVs reduced by 11.2% (25.6% to 14.4%) after nationwide PHIs. Despite the COVID-19 pandemic, the most commonly identified enveloped and non-enveloped viruses were influenza virus and enterovirus/rhinovirus, respectively. Observed reduction in NCRV incidence was predominantly contributed by enveloped NCRVs including influenza viruses. We did not observe epidemiological impacts of NPIs on non-enveloped viruses but an increasing trend in enterovirus/rhinovirus test positivity rate among pediatric patients. Our data were validated using Taiwan's national notification database. CONCLUSIONS: Our frontline investigation suggests that the current NPIs in Taiwan might not effectively control the transmission of non-enveloped respiratory viruses, despite their protective effects against influenza and seasonal coronavirus. Health authorities may consider using hydrogen peroxide or chloride-based disinfectants as additional preventative strategies against non-enveloped respiratory viruses in the post-COVID-19 era.


Assuntos
Controle de Doenças Transmissíveis/métodos , Infecções Respiratórias/prevenção & controle , Viroses/prevenção & controle , Adulto , COVID-19/epidemiologia , COVID-19/prevenção & controle , Criança , Humanos , Máscaras , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase Multiplex , Distanciamento Físico , Infecções Respiratórias/diagnóstico , Infecções Respiratórias/epidemiologia , Estudos Retrospectivos , SARS-CoV-2 , Especificidade da Espécie , Taiwan/epidemiologia , Centros de Atenção Terciária , Proteínas do Envelope Viral/genética , Proteínas do Envelope Viral/metabolismo , Viroses/diagnóstico , Viroses/epidemiologia , Vírus/classificação , Vírus/genética , Vírus/isolamento & purificação
9.
Sci Rep ; 10(1): 17585, 2020 10 16.
Artigo em Inglês | MEDLINE | ID: mdl-33067501

RESUMO

The relationship between serum uric acid (SUA) and cardiovascular (CV) mortality in patients with chronic kidney disease (CKD) has been described as either a J- or U-shaped function. However, its effect in non-diabetic CKD (and varying severities of CKD) remains unclear. We analyzed the database of the National Health and Nutrition Examination Survey, USA, from the years 1999 to 2010. We then grouped the subjects into 4 categories according to their SUA levels: (a) < 5 mg/dl, (b) 5-7 mg/dl, (c) 7-9 mg/dl and (d) ≥ 9 mg/dl. For mortality comparison purposes (CV related, cancer related and all-cause mortality), we set the SUA group of 5-7 mg/dl as the reference. We also separated this population into moderate (stage 3) and severe (stages 4 and 5) CKD. A total of 1860 participants were included in this study. Results showed that the group with the lowest SUA levels (< 5 mg/dl), were the least male gender (19.25%), had the lowest body mass index (26.41(95% CI = 25.66-27.16) kg/m2), highest systolic blood pressure (139.02 (95% CI 135.72-142.32) mmHg), highest high-density cholesterol (59.55 (95% CI 57.37-61.74) mg/dl), lowest blood glucose (95.46 (95% CI 93.16-97.76) mg/dl), highest total cholesterol (210.31 (95% CI 203.36-217.25) mg/dl), lowest serum albumin (4.09 (95% CI 4.04-4.14) g/dl), highest estimated glomerular filtration rate (eGFR) (47.91 (95% CI 45.45-50.49) ml/min/1.732m2), least history of hypertension (54.4%), and least total energy intake (1643.7 (95% CI 1536.13-1751.27) kcal/day). In the group with SUA ≥ 9 mg/dl, patients had higher all-cause mortality (HR = 2.15) whatever their baseline CVD status. In non-DM CKD patients with a CVD history, the group with SUA ≥ 9 mg/dl had the highest all-cause mortality (HR = 5.39), CVD mortality (HR = 8.18) and CVD or cancer (HR = 8.25) related mortality. In non-DM patients with severe CKD (eGFR < 30 ml/min/1.732m2), the group with SUA < 5 had a significantly increased all-cause mortality. On the contrary, in non-DM patients with moderate CKD (eGFR = 30-60 ml/min/1.832m2), the group with SUA ≥ 9 had a significantly increased all-cause mortality. In moderate non-DM CKD, SUA ≥ 9 mg/dl is associated with higher all-cause mortality. However, once progressing to severe non-DM CKD, SUA < 5 mg/dl is associated with higher all-cause mortality (even though it has the least risk factors for metabolic syndrome).


Assuntos
Insuficiência Renal Crônica/metabolismo , Insuficiência Renal Crônica/mortalidade , Ácido Úrico/análise , Idoso , Índice de Massa Corporal , Doenças Cardiovasculares/metabolismo , Bases de Dados Factuais , Feminino , Taxa de Filtração Glomerular/fisiologia , Humanos , Hipertensão/metabolismo , Masculino , Síndrome Metabólica/metabolismo , Inquéritos Nutricionais , Insuficiência Renal Crônica/sangue , Fatores de Risco , Estados Unidos , Ácido Úrico/sangue
10.
Int J Clin Pract ; 74(7): e13505, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32239620

RESUMO

BACKGROUND: We aimed to investigate the effect of a low-protein intake on all-cause mortality in subjects with an estimated glomerular filtration rate (eGFR) ≧60 mL/min/1.73 m2 with or without albuminuria using data from the National Health and Nutrition Examination Survey (NHANES). METHODS: We analysed participants in the NHANES from 2003 to 2010. We excluded participants with an eGFR less than 60 mL/min/1.73 m2 from the analyses. Low-protein intake was defined as a protein intake of less than 0.8 g/kg/day. The Healthy Eating Index 2010 was used to assess diet quality. The vital status of all participants in the NHANES was determined by linking to the National Death Index through the end of 2011. The hazard ratios (HRs) for the association of low-protein intake and mortality were determined using weighted Cox proportional hazards regression models. RESULTS: A total of 7730 participants were included in the analyses. After a median follow up of 4.7 years, 462 participants died. A low-protein intake was associated with a higher risk of mortality (HRs 1.394, 95% CI 1.121-1.734, P = .004) with adjustment for diet quality and relevant risk factors. The higher risk of mortality associated with a low-protein intake was consistent in subjects with or without albuminuria (P interaction .280). CONCLUSION: A protein intake of less than 0.8 g/kg/day was associated with a higher risk of mortality in subjects with an eGFR ≧60 mL/min/1.73 m2 , irrespective of whether they had albuminuria.


Assuntos
Albuminúria/mortalidade , Proteínas Alimentares/uso terapêutico , Taxa de Filtração Glomerular , Inquéritos Nutricionais , Deficiência de Proteína/prevenção & controle , Adulto , Idoso , Albuminúria/complicações , Albuminúria/prevenção & controle , Dieta/estatística & dados numéricos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Deficiência de Proteína/etiologia , Risco , Fatores de Risco , Fatores de Tempo
11.
Diagnostics (Basel) ; 10(3)2020 Mar 06.
Artigo em Inglês | MEDLINE | ID: mdl-32155787

RESUMO

BACKGROUND: The role of circulating tumor cells (CTCs) for predicting the recurrence of cancer in lung cancer patients after surgery remains unclear. METHODS: A negatively selected protocol of CTC identification was applied. For all the enrolled patients, CTC testing was performed before and after surgery on the operation day (day 0), postoperative day 1, and day 3. The daily decline and trend of CTCs were analyzed to correlate with cancer relapse. The mixed model repeated measures (MMRM) adjusted by cancer characteristics was applied for statistical significance. RESULTS: Fifty patients with lung mass undergoing surgery were enrolled. Among 41 primary lung cancers, 26 (63.4%) were pathological stage Tis and I. A total of 200 CTC tests were performed. MMRM analysis indicated that surgery could contribute to a CTC decline after surgery in all patients with statistical significance (p = 0.0005). The daily decrease of CTCs was statistically different between patients with and without recurrence (p = 0.0068). An early rebound of CTC counts on postoperative days 1 and 3 was associated with recurrence months later. CONCLUSION: CTC testing can potentially serve as a tool for minimal residual disease detection in early-staged lung cancer after curative surgery.

12.
J Clin Med ; 8(12)2019 Dec 03.
Artigo em Inglês | MEDLINE | ID: mdl-31816820

RESUMO

Aim: This study aimed to compare mortality risks across uric acid (UA) levels between non-diabetes adults and participants with diabetes and to investigate the association between hyperuricemia and mortality risks in low-risk adults. Methods: We analyzed data from adults aged >18 years without coronary heart disease and chronic kidney disease (n = 29,226) from the National Health and Nutrition Examination Survey (1999-2010) and the associated mortality data (up to December 2011). We used the Cox proportional hazards models to examine the risk of all-cause and cause-specific (cardiovascular disease (CVD) and cancer) mortality at different UA levels between adults with and without diabetes. Results: Over a median follow-up of 6.6 years, 2069 participants died (495 from CVD and 520 from cancers). In non-diabetes adults at UA ≥ 5 mg/dL, all-cause and CVD mortality risks increased across higher UA levels (p-for-trend = 0.037 and 0.058, respectively). The lowest all-cause mortality risk in participants with diabetes was at the UA level of 5-7 mg/dL. We set the non-diabetes participants with UA levels of <7 mg/dL as a reference group. Without considering the effect of glycemic control, the all-cause mortality risk in non-diabetes participants with UA levels of ≥7 mg/dL was equivalent to risk among diabetes adults with UA levels of <7 mg/dL (hazard ratio = 1.44 vs. 1.57, p = 0.49). A similar result was shown in CVD mortality risk (hazard ratio = 1.80 vs. 2.06, p = 0.56). Conclusion: Hyperuricemia may be an indicator to manage multifaceted cardiovascular risk factors in low-risk adults without diabetes, but further studies and replication are warranted.

13.
BMC Cancer ; 19(1): 1167, 2019 Dec 02.
Artigo em Inglês | MEDLINE | ID: mdl-31791269

RESUMO

BACKGROUND: Circulating tumor cells (CTCs) are associated with breast cancer prognosis. Research is limited regarding the role of circulating cancer stem-like cells (cCSCs) considering the treatment response and survival among patients with metastatic breast cancer. Accordingly, we performed this prospective study to clarify the prognostic significance of baseline cCSCs for metastatic breast cancer in terms of first-line chemotherapy. METHODS: Between April 2014 and January 2016, we prospectively enrolled 48 patients with stage IV breast invasive ductal carcinoma who underwent first-line chemotherapy. We identified and analyzed CTCs and cCSCs by using a protocol based on negative selection and flow cytometry before chemotherapy. CTCs were identified as EpCAM+Hoechst+CD45- cells and cCSCs as CD133+EpCAM+Hoechst+CD45- cells. cCSCs were expressed as a percentage of CTCs. The associations between CTCs, cCSCs, and the clinicopathological variables that were predictive of the treatment response and survival outcome were analyzed using univariate and multivariate analyses. RESULTS: We identified CTCs in all the enrolled patients, with a median number of 33.9/mL CTCs. CSCs were isolated in 97.9% of the patients; the median percentage of cCSCs was 14.7%. A high baseline level of cCSCs was correlated with an inferior tumor response rate (54.2% vs. 95.8%, p < 0.001), overall survival (OS; median: 27.7 months vs. not reached, p < 0.001), and progression-free survival (PFS; median: 5.7 vs. 18.0 months, p < 0.001). Multivariate analysis revealed that along with other clinical variables, baseline cCSCs remained an independent prognostic factor for OS and PFS. CONCLUSIONS: Baseline cCSCs predict the treatment response as well as survival in patients with metastatic breast cancer undergoing first-line chemotherapy. Therefore, the measurement of cCSCs may assist in identifying early cancer treatment response and prognosis.


Assuntos
Neoplasias da Mama/mortalidade , Carcinoma Ductal de Mama/mortalidade , Células Neoplásicas Circulantes/patologia , Células-Tronco Neoplásicas/patologia , Antígeno AC133/imunologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Carcinoma Ductal de Mama/tratamento farmacológico , Carcinoma Ductal de Mama/patologia , Contagem de Células , Feminino , Humanos , Biópsia Líquida , Pessoa de Meia-Idade , Células Neoplásicas Circulantes/imunologia , Células-Tronco Neoplásicas/imunologia , Prognóstico , Estudos Prospectivos , Análise de Sobrevida , Resultado do Tratamento
14.
São Paulo med. j ; 137(6): 523-529, Nov.-Dec. 2019. tab
Artigo em Inglês | LILACS | ID: biblio-1094520

RESUMO

ABSTRACT BACKGROUND: Findings regarding the effects of hyperuricemia on renal function and mortality have been inconsistent. OBJECTIVES: To investigate the effects of hyperuricemia on incident renal replacement therapy and all-cause mortality among patients with chronic kidney disease (CKD). DESIGN AND SETTING: Retrospective cohort study conducted in a medical center in Taiwan. METHODS: Patients with CKD in stages 3-5, without histories of renal replacement therapy, were consecutively recruited from 2007 to 2013. Their medical history, laboratory and medication data were collected from hospital records. The mean uric acid level in the first year of follow-up was used for analyses. Hyperuricemia was defined as mean uric acid level ≥ 7.0 mg/dl in men or ≥ 6.0 mg/dl in women. The primary outcomes were incident renal replacement therapy and all-cause mortality, and these data were retrospectively collected from hospital records until the end of 2015. RESULTS: A total of 4,381 patients were analyzed (mean age 71.0 ± 14.8 years; males 62.7%), and the median follow-up period was 2.5 years. Patients with hyperuricemia were at increased risk of incident renal replacement therapy and all-cause mortality, especially those with CKD in stages 4 or 5. Compared with patients with CKD in stage 3 and normouricemia, patients with CKD in stages 4 or 5 presented significantly higher risk of all-cause mortality only if they had hyperuricemia. CONCLUSIONS: In patients with CKD in stages 3-5, hyperuricemia was associated with higher risk of incident renal replacement therapy and all-cause mortality. Whether treatment with uric acid-lowering drugs in these patients would improve their outcomes merits further investigation.


Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Terapia de Substituição Renal , Hiperuricemia/sangue , Insuficiência Renal Crônica/sangue , Ácido Úrico/análise , Índice de Gravidade de Doença , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Fatores de Risco , Seguimentos , Hiperuricemia/complicações , Hiperuricemia/fisiopatologia , Hiperuricemia/mortalidade , Insuficiência Renal Crônica/complicações , Insuficiência Renal Crônica/fisiopatologia , Insuficiência Renal Crônica/mortalidade , Taxa de Filtração Glomerular
15.
EBioMedicine ; 40: 528-540, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30709770

RESUMO

BACKGROUND: Acute lung injury (ALI) is a severe life-threatening inflammatory disease. Neutrophil activation is a major pathogenic factor in ALI. Protein kinase B (PKB)/AKT regulates diverse cellular responses, but the significance in neutrophilic inflammation and ALI remains unknown. METHODS: Human neutrophils and neutrophil-like differentiated HL-60 (dHL-60) cells were used to examine the anti-inflammatory effects of 5,7-dimethoxy-1,4-phenanthrenequinone (CLLV-1). The therapeutic potential of CLLV-1 was determined in a mouse model of lipopolysaccharide (LPS)-induced ALI. FINDINGS: CLLV-1 inhibited respiratory burst, degranulation, adhesion, and chemotaxis in human neutrophils and dHL-60 cells. CLLV-1 inhibited the phosphorylation of AKT (Thr308 and Ser473), but not of ERK, JNK, or p38. Furthermore, CLLV-1 blocked AKT activity and covalently reacted with AKT Cys310 in vitro. The AKT309-313 peptide-CLLV-1 adducts were determined by NMR or mass spectrometry assay. The alkylation agent-conjugated AKT (reduced form) level was also inhibited by CLLV-1. Significantly, CLLV-1 ameliorated LPS-induced ALI, neutrophil infiltration, and AKT activation in mice. INTERPRETATION: Our results identify CLLV-1 as a covalent allosteric AKT inhibitor by targeting AKT Cys310. CLLV-1 shows potent anti-inflammatory activity in human neutrophils and LPS-induced mouse ALI. Our findings provide a mechanistic framework for redox modification of AKT that may serve as a novel pharmacological target to alleviate neutrophilic inflammation.


Assuntos
Sítio Alostérico , Infiltração de Neutrófilos/efeitos dos fármacos , Neutrófilos/efeitos dos fármacos , Neutrófilos/imunologia , Fenantrenos/farmacologia , Domínios e Motivos de Interação entre Proteínas/efeitos dos fármacos , Proteínas Proto-Oncogênicas c-akt/química , Quinonas/farmacologia , Anti-Inflamatórios/química , Anti-Inflamatórios/farmacologia , Adesão Celular/efeitos dos fármacos , Quimiotaxia de Leucócito/imunologia , Células HL-60 , Humanos , Modelos Moleculares , Conformação Molecular , Neutrófilos/metabolismo , Fenantrenos/química , Ligação Proteica , Proteínas Proto-Oncogênicas c-akt/antagonistas & inibidores , Proteínas Proto-Oncogênicas c-akt/metabolismo , Quinonas/química , Espécies Reativas de Oxigênio , Relação Estrutura-Atividade
16.
Fitoterapia ; 130: 125-133, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30149097

RESUMO

Six new diterpenes, leojaponins G-L (1-6) along with 19 known compounds (7-25) were isolated from Leonurus japonicus. Their structures were elucidated by NMR, MS, IR, UV, and ECD spectroscopic data. Anti-melanogenesis assay indicated that 7 could safely and dose-dependently decrease melanin production in B16F10 melanoma cell with an IC50 value of 59.1 µM, but moderately inhibit tyrosinase activity. Without cytotoxicities at 20 µM, compounds 11, 14, 15, and 17-21 showed significant melanogenesis stimulation activities at the percentages of 7.7-48.2. Antioxidants 19 and 24 could notably inhibit ROS production in a dose-dependent manner with percentages of 24.7-42.2 and 27.9-40.2, respectively among the concentrations of 0.16 to 100 µM. Our results demonstrated L. japonicus and its constituents could be potential botanical resources of cosmeceutical development for treatment and prevention of skin disorders.


Assuntos
Diterpenos/farmacologia , Leonurus/química , Animais , Antioxidantes/isolamento & purificação , Antioxidantes/farmacologia , Células Cultivadas , Diterpenos/isolamento & purificação , Medicamentos de Ervas Chinesas/farmacologia , Humanos , Queratinócitos/efeitos dos fármacos , Melanoma Experimental , Camundongos , Estrutura Molecular , Compostos Fitoquímicos/isolamento & purificação , Compostos Fitoquímicos/farmacologia , Componentes Aéreos da Planta/química , Espécies Reativas de Oxigênio/metabolismo , Taiwan
17.
J Formos Med Assoc ; 117(2): 153-163, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28392193

RESUMO

BACKGROUND: Oxaliplatin-based chemotherapy is an alternative systemic treatment for patients with metastatic hepatocellular carcinoma (HCC) who were refractory or intolerant to sorafenib. To date, there have been no biomarkers reported to monitor the therapeutic efficacy and to predict the outcomes of HCC patients receiving oxaliplatin-based chemotherapy. METHODS: Eighty-one HCC patients with elevated baseline α-fetoprotein (AFP) levels and extrahepatic spreading who received oxaliplatin-based chemotherapy between 2012 and 2014 were retrospectively enrolled in this study. Two AFP tests were performed, at baseline and 2-4 weeks after the initiation of chemotherapy. The change in AFP levels was calculated for survival analysis. RESULTS: In the AFP decline group (decreased compared to baseline), the median progression-free survival (PFS) and overall survival (OS) were 7.0 months and 12.3 months, respectively. In the AFP nondecline group, the median PFS and OS were 2.3 months and 3.0 months, respectively. The difference in OS between the two groups was significant (p < 0.005). In the multivariate analysis for disease progression, the best response to chemotherapy and AFP decline were independent factors, with p values of 0.004 and 0.009, respectively. In the multivariate analysis for OS, the baseline Child-Pugh score, best response to chemotherapy, and AFP decline were independent prognostic factors, with p values of 0.01, 0.001, and 0.008, respectively. Additionally, the unit change in AFP level was predictive of PFS and OS with p values of 0.007 and 0.001, respectively. CONCLUSION: The change in AFP levels 2-4 weeks after initiating oxaliplatin-based chemotherapy is useful to predict treatment response and survival.


Assuntos
Carcinoma Hepatocelular/sangue , Carcinoma Hepatocelular/mortalidade , Neoplasias Hepáticas/sangue , Neoplasias Hepáticas/mortalidade , alfa-Fetoproteínas/análise , Adulto , Idoso , Antineoplásicos/uso terapêutico , Biomarcadores Tumorais/sangue , Carcinoma Hepatocelular/tratamento farmacológico , Progressão da Doença , Feminino , Humanos , Neoplasias Hepáticas/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Niacinamida/análogos & derivados , Niacinamida/uso terapêutico , Compostos Organoplatínicos/uso terapêutico , Oxaliplatina , Compostos de Fenilureia/uso terapêutico , Estudos Retrospectivos , Índice de Gravidade de Doença , Sorafenibe , Análise de Sobrevida , Taiwan , Fatores de Tempo , Resultado do Tratamento
18.
Oncotarget ; 8(1): 1569-1579, 2017 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-27906669

RESUMO

Hemoglobin (Hb) levels are reportedly related with treatment outcomes and survival in patients of breast cancer. However, the long-term change in Hb levels after treatment and the effects of Hb on survival remain unknown. This retrospective cohort study enrolled 1931 breast cancer patients with pathological stage I-IV between 1/1/2003 and 12/31/2013. Latent class modeling was used to identify trajectories in monthly Hb levels over time. The primary endpoint was 10-year cancer-related death. We identified 5 distinct Hb trajectories: persistent anemia (5.6 %; n = 109), improved anemia (4.8 %, n = 93), mild anemia (21.0%; n = 406), low normal Hb (46.6 %; n = 899), and normal Hb (21.9%; n = 424). Compared with the normal-Hb group, trajectories with low Hb levels had worst 10-year survival. The adjusted hazard ratios were 1.79(95% CI, 0.91-3.53) for the improved anemia group, 1.09(95% CI, 0.68-1.74) for the mild anemia group, 1.06 (95% CI, 0.71-1.60) for the low normal Hb group, and 2.19(95% CI 1.28-3.75) for the persistent anemia group. Our findings show there are five Hb level trajectories during breast cancer treatment. The anemia Hb level trajectory during the first 12 months after treatment reflect the worst cancer-related 10-year survival in breast cancer patients.


Assuntos
Neoplasias da Mama/sangue , Hemoglobinas/metabolismo , Adulto , Neoplasias da Mama/mortalidade , Feminino , Humanos , Pessoa de Meia-Idade , Análise de Sobrevida , Resultado do Tratamento
19.
Sci Rep ; 6: 31423, 2016 08 17.
Artigo em Inglês | MEDLINE | ID: mdl-27530152

RESUMO

The role of circulating tumour cells (CTCs) in advanced oesophageal cancer (EC) patients undergoing concurrent chemoradiotherapy (CCRT) remains uncertain. A negative selection protocol plus flow cytometry was validated to efficiently identify CTCs. The CTC number was calculated and analysed for survival impact. The protocol's efficacy in CTC identification was validated with a recovery rate of 44.6 ± 9.1% and a coefficient of variation of 20.4%. Fifty-seven patients and 20 healthy donors were enrolled. Initial staging, first response to CRT, and surgery after CRT were prognostic for overall survival, with P values of <0.0001, <0.0001, and <0.0001, respectively. The CTC number of EC patients is significantly higher (P = 0.04) than that of healthy donors. Multivariate analysis for disease-specific progression-free survival showed that surgery after response to CCRT, initial stage, and CTC number (≥21.0 cells/mL) played independent prognostic roles. For overall survival, surgery after CCRT, performance status, initial stage, and CTC number were significant independent prognostic factors. In conclusion, a negative selection plus flow cytometry protocol efficiently detected CTCs. The CTC number before CCRT was an independent prognostic factor in patients with unresectable oesophageal squamous cell carcinoma. Further large-scale prospective studies for validation are warranted.


Assuntos
Carcinoma de Células Escamosas/sangue , Carcinoma de Células Escamosas/mortalidade , Carcinoma de Células Escamosas/terapia , Quimiorradioterapia , Neoplasias Esofágicas/sangue , Neoplasias Esofágicas/mortalidade , Neoplasias Esofágicas/terapia , Células Neoplásicas Circulantes/metabolismo , Adulto , Idoso , Intervalo Livre de Doença , Carcinoma de Células Escamosas do Esôfago , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Células Neoplásicas Circulantes/patologia , Taxa de Sobrevida
20.
Am J Chin Med ; 44(3): 617-36, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27109152

RESUMO

4[Formula: see text]-Hydroxywithanolide E is an active component of the extract of Physalis peruviana that has been reported to exhibit antitumor effects. Although the involvement of reactive oxygen species (ROS) production and the ataxia-telangiectasia mutated protein (ATM)-dependent DNA damage signaling pathway in 4[Formula: see text]-hydroxywithanolide E-induced apoptosis of breast cancer MCF-7 cells was demonstrated in our previous study, the relationship between ROS production and the cellular defense system response in 4[Formula: see text]-hydroxywithanolide E-induced cell death requires further verification. The present study suggests that ROS play an important role in 4[Formula: see text]-hydroxywithanolide E-induced MCF-7 cell death in which anti-oxidants, such as glutathione or N-acetylcysteine, can resist the 4[Formula: see text]-hydroxywithanolide E-induced accumulation of ROS and cell death. Furthermore, N-acetylcysteine or glutathione can reverse the 4[Formula: see text]-hydroxywithanolide E-induced changes in the cell cycle distribution and the expression of cell cycle regulators. We found that the 4[Formula: see text]-hydroxywithanolide E-induced ROS accumulation was correlated with the upregulation of Nrf2 and Nrf2-downstream genes, such as antioxidative defense enzymes. In general, the activity of Nrf2 is regulated by the Ras signalling pathway. However, we demonstrated that Nrf2 was activated during 4[Formula: see text]-hydroxywithanolide E-induced MCF-7 cell death in spite of the 4[Formula: see text]-hydroxywithanolide E-induced inhibition of the Ras/Raf/ERK pathway. The activity and protein expression of superoxide dismutase and catalase were involved in the 4[Formula: see text]-hydroxywithanolide E-induced ROS production in MCF-7 cells. Furthermore, 4[Formula: see text]-hydroxywithanolide E was demonstrated to significantly reduce the sizes of the tumor nodules in the human breast cancer MDA-MB231 xenograft tumor model.


Assuntos
Antineoplásicos Fitogênicos , Antioxidantes , Apoptose/efeitos dos fármacos , Apoptose/genética , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Ciclo Celular/efeitos dos fármacos , Fator 2 Relacionado a NF-E2/metabolismo , Physalis/química , Fitoterapia , Espécies Reativas de Oxigênio/metabolismo , Vitanolídeos/farmacologia , Vitanolídeos/uso terapêutico , Animais , Proteínas Mutadas de Ataxia Telangiectasia , Dano ao DNA/efeitos dos fármacos , Dano ao DNA/genética , Modelos Animais de Doenças , Glutationa , Humanos , Células MCF-7 , Transdução de Sinais/genética , Transdução de Sinais/fisiologia , Vitanolídeos/isolamento & purificação
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