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1.
Small ; 20(16): e2308469, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38032176

RESUMO

Triboelectric nanogenerators (TENGs) have manifested a remarkable potential for harvesting environmental energy and have the prospects to be utilized for various uses, for instance, self-powered sensing devices, flexible wearables, and marine corrosion protection. However, the potential for further development of TENGs is restricted on account of their low output power that in turn is determined by their surface charge density. The current review majorly focuses on the selection and optimization of triboelectric materials. Subsequently, various methods capable of enhancing the surface charge density of TENGs, including environmental regulation, charge excitation, charge pumping, electrostatic breakdown, charge trapping, and liquid-solid structure are comprehensively reviewed. Lastly, the review is concluded by highlighting the existing challenges in enhancing the surface charge density of TENGs and exploring potential opportunities for future research endeavors in this area.

2.
Nanotechnology ; 35(36)2024 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-38861977

RESUMO

Flexible pressure sensors have attracted wide attention because of their applications in wearable electronic, human-computer interface, and healthcare. However, it is still a challenge to design a pressure sensor with adjustable sensitivity in an ultrawide response range to satisfy the requirements of different application scenarios. Here, a laser patterned graphene pressure sensor (LPGPS) is proposed with adjustable sensitivity in an ultrawide response range based on the pre-stretched kirigami structure. Due to the out-of-plane deformation of the pre-stretched kirigami structure, the sensitivity can be easily tuned by simply modifying the pre-stretched level. As a result, it exhibits a maximum sensitivity of 0.243 kPa-1, an ultrawide range up to 1600 kPa, a low detection limit (6 Pa), a short response time (42 ms), and excellent stability with high pressure of 1200 kPa over 500 cycles. Benefiting from its high sensitivity and ultrawide response range, the proposed sensor can be applied to detect physiological and kinematic signals under different pressure intensities. Additionally, taking advantage of laser programmable patterning, it can be easily configured into an array to determine the pressure distribution. Therefore, LPGPS with adjustable sensitivity in an ultrawide response range has potential application in wearable electronic devices.

3.
Br J Cancer ; 128(8): 1514-1520, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36797357

RESUMO

BACKGROUND: Patient selection is key in Phase I studies, and prognosis can be difficult to estimate in heavily pre-treated patients. Previous prognostic models like the Royal Marsden Hospital (RMH) score or using the neutrophil-lymphocyte ratio (NLR) have not been validated in current novel therapies nor in the Asian Phase I population. METHODS: We conducted a retrospective review of 414 patients with solid tumours participating in Phase I studies at our centre between October 2013 and December 2020. RESULTS: The RMH model showed poorer prognosis with increasing scores [RMH score 1, HR 1.28 (95% CI: 0.96-1.70); RMH score 2, HR 2.27 (95% CI: 1.62-3.17); RMH score 3, HR 4.14 (95% CI: 2.62-6.53)]. NLR did not improve the AUC of the model. Poorer ECOG status (ECOG 1 vs. 0: HR = 1.59 (95% CI = 1.24-2.04), P < 0.001) and primary tumour site (GI vs. breast cancer: HR = 3.06, 95% CI = 2.16-4.35, P < 0.001) were prognostic. CONCLUSIONS: We developed a NCIS prognostic score with excellent prognostic ability for both short-term and longer-term survival (iAUC: 0.71 [95% CI 0.65-0.76]), and validated the RMH model in the largest Asian study to date.


Assuntos
Neoplasias da Mama , Humanos , Feminino , Prognóstico , Resultado do Tratamento , Neoplasias da Mama/terapia , Linfócitos , Seleção de Pacientes , Estudos Retrospectivos , Neutrófilos
4.
Langmuir ; 38(49): 15245-15252, 2022 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-36441907

RESUMO

The accumulation of ice may cause serious safety problems in numerous fields. A photothermal superhydrophobic surface is considered to be useful for preventing ice formation because of its environmentally friendly, energy-saving, and excellent anti-icing/de-icing properties. However, it easily fails to work in the absence of sunlight. To improve its anti-icing property without sunlight irradiation, a multifunctional photothermal phase-change superhydrophobic film (MPPSF) consisting of phase-change microcapsules (PCMs) and carbon nanotubes (CNTs) was fabricated using a facile spraying method. Benefitting from the excellent light-thermal conversion effect of CNTs, the surface temperature could increase from -20 to 130.1 °C within 180 s under 808 nm near-infrared laser irradiation of 1 W/cm2, thus realizing high-efficiency de-icing. Meanwhile, a portion of the light-thermal energy was stored in the MPPSF because of the phase change of the PCMs. Without sunlight irradiation, the latent heat of the PCMs was released when the external temperature approached the phase-transition temperature. The synergistic effects of the phase-transition latent heat release and superhydrophobicity allowed the MPPSF to effectively hinder the formation of ice for 10.1 min at -20 °C. Therefore, this MPPSF with outstanding anti-icing and de-icing performances is expected to achieve ice prevention and removal in all-days.

5.
J Cell Physiol ; 236(6): 4528-4537, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33230810

RESUMO

The tumor microenvironment significantly affects tumor progression, and tumor cells can also remodel the tumor microenvironment through complex interaction. Inflammasomes are innate immune system receptors/sensors that regulate an inflammatory response mainly mediated by the nucleotide-binding oligomerization domain-like receptors in macrophages, which can also influence the formation, progression and therapeutic response of cancer. However, the effects of tumor-derived factors in the microenvironment on inflammasomes have rarely been reported. In this study, we found that lactate, as the main metabolite of tumor cells could specifically activate the nucleotide-binding oligomerization domain, leucine rich repeat and pyrin domain-containing protein 3 inflammasome through increasing the level of reactive oxygen species (ROS) in THP-1-derived macrophages. Furthermore, we showed that transforming growth factor-ß (TGF-ß), a cytokine accumulated in the tumor microenvironment, could be induced by lactate treatment in tumor cells, and in turn inhibit inflammasome activation induced by lactate and other canonical ligands in macrophages. In addition, TGF-ß might induce autophagy of macrophages in a SMAD-dependent manner, leading to ROS clearance and eventually inhibiting the activation of inflammasomes. Collectively, these results indicated that in the tumor microenvironment, tumor-derived lactate could act as a danger signal alerting innate immunity, but nevertheless tumor cells produced more TGF-ß to avoid immune surveillance.


Assuntos
Neoplasias Colorretais/metabolismo , Inflamassomos/metabolismo , Ácido Láctico/metabolismo , Macrófagos/metabolismo , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Comunicação Parácrina , Fator de Crescimento Transformador beta/metabolismo , Microambiente Tumoral , Neoplasias Colorretais/imunologia , Neoplasias Colorretais/patologia , Meios de Cultivo Condicionados/metabolismo , Células HCT116 , Humanos , Imunidade Inata , Inflamassomos/imunologia , Interleucina-1beta/metabolismo , Macrófagos/imunologia , Proteína 3 que Contém Domínio de Pirina da Família NLR/genética , Espécies Reativas de Oxigênio/metabolismo , Transdução de Sinais , Células THP-1 , Evasão Tumoral
6.
Hong Kong Med J ; 26(6): 520-525, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33350964

RESUMO

Abnormal uterine bleeding in premenopausal women is a common gynaecological symptom and composes of abnormality in the frequency, duration, regularity, and flow volume of menstruation. It could constitute the presentation of various gynaecological malignancies. An appropriate history and physical examination are mandatory to ascertain the diagnosis. Depending on the clinical condition, a complete blood picture, thyroid function test, clotting profile, chlamydia test, cervical smear, and pregnancy test can be performed. Ultrasound should be performed in cases with a pelvic mass, unsatisfactory physical examination, persistent symptoms, or no response to medical treatment. In women aged ≥40 years, an out-patient endometrial biopsy with Pipelle should be performed. In women aged <40 years with risk factors for endometrial cancer, persistent symptoms, or no response to medical treatment, an endometrial biopsy should be performed to rule out endometrial cancer. Hysteroscopy or saline infusion sonohysterography is more sensitive than ultrasound for diagnosing endometrial pathology. Details of the above recommendations are presented.


Assuntos
Técnicas de Diagnóstico Obstétrico e Ginecológico/normas , Ginecologia/normas , Pré-Menopausa , Hemorragia Uterina/diagnóstico , Adolescente , Adulto , Biópsia/normas , Endométrio/diagnóstico por imagem , Feminino , Hong Kong , Humanos , Histeroscopia/normas , Ultrassonografia/normas , Adulto Jovem
7.
Ann Oncol ; 30(2): 236-242, 2019 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-30590484

RESUMO

BACKGROUND: For primary triple-negative breast cancer (TNBC) treated with neoadjuvant chemotherapy (NAC), higher pretreatment tumor-infiltrating lymphocytes (TILs) correlates with increased pathologic complete response (pCR) rates, and improved survival. We evaluated the added prognostic value of residual disease (RD) TILs to residual cancer burden (RCB) in predicting survival post-NAC. PATIENTS AND METHODS: We combined four TNBC NAC patient cohorts who did not achieve pCR. RD TILs were investigated for associations with recurrence-free survival (RFS), and overall survival (OS) using Cox models with stromal TILs as a continuous variable (per 10% increment). The likelihood ratio test was used to evaluate added prognostic value of RD TILs. RESULTS: A total of 375 RD TNBC samples were evaluable for TILs and RCB. The median age was 50 years, with 62% receiving anthracycline/taxane chemotherapy. The RCB class after NAC was 11%, 50%, and 39% for I, II, and III, respectively. The median RD TIL level was 20% (IQR 10-40). There was a positive correlation between RD TIL levels and CD8+ T-cell density (ρ = 0.41). TIL levels were significantly lower with increasing post-NAC tumor (P = 0.005), nodal stage (P = 0.032), but did not differ by RCB class (P = 0.84). Higher RD TILs were significantly associated with improved RFS (HR: 0.86; 95% CI 0.79-0.92; P < 0.001), and improved OS (HR: 0.87; 95% CI 0.80-0.94; P < 0.001), and remained significant predictors in multivariate analysis (RFS P = 0.032; OS P = 0.038 for OS). RD TILs added significant prognostic value to multivariate models including RCB class (P < 0.001 for RFS; P = 0.021 for OS). The positive prognostic effect of RD TILs significantly differed by RCB class for RFS (PInt=0.003) and OS (PInt=0.008) with a greater magnitude of positive effect observed for RCB class II than class III. CONCLUSIONS: TIL levels in TNBC RD are significantly associated with improved RFS and OS and add further prognostic information to RCB class, particularly in RCB class II.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Linfócitos do Interstício Tumoral/imunologia , Terapia Neoadjuvante/mortalidade , Neoplasia Residual/patologia , Neoplasias de Mama Triplo Negativas/patologia , Idoso , Linfócitos T CD8-Positivos/imunologia , Progressão da Doença , Feminino , Seguimentos , Humanos , Neoplasia Residual/tratamento farmacológico , Neoplasia Residual/imunologia , Prognóstico , Receptor ErbB-2/metabolismo , Taxa de Sobrevida , Neoplasias de Mama Triplo Negativas/tratamento farmacológico , Neoplasias de Mama Triplo Negativas/imunologia
8.
Phys Rev Lett ; 123(24): 247204, 2019 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-31922852

RESUMO

We present the ultralow-temperature specific heat and thermal conductivity measurements on single crystals of triangular-lattice compound EtMe_{3}Sb[Pd(dmit)_{2}]_{2}, which has long been considered as a gapless quantum spin liquid candidate. In specific heat measurements, a finite linear term is observed, consistent with the previous work [S. Yamashita et al., Nat. Commun. 2, 275 (2011)NCAOBW2041-172310.1038/ncomms1274]. However, we do not observe a finite residual linear term in the thermal conductivity measurements, and the thermal conductivity does not change in a magnetic field of 6 T. These results are in sharp contrast to previous thermal conductivity measurements on EtMe_{3}Sb[Pd(dmit)_{2}]_{2} [M. Yamashita et al., Science 328, 1246 (2010)SCIEAS0036-807510.1126/science.1188200], in which a huge residual linear term was observed and attributed to highly mobile gapless excitations, likely the spinons of a quantum spin liquid. In this context, the true ground state of EtMe_{3}Sb[Pd(dmit)_{2}]_{2} has to be reconsidered.

9.
BMC Neurol ; 19(1): 294, 2019 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-31747879

RESUMO

BACKGROUND: Transient ischemic attack (TIA) patients are at high risk of recurrent vascular events; timely management can reduce that risk by 70%. The Protocol-guided Rapid Evaluation of Veterans Experiencing New Transient Neurological Symptoms (PREVENT) developed, implemented, and evaluated a TIA quality improvement (QI) intervention aligned with Learning Healthcare System principles. METHODS: This stepped-wedge trial developed, implemented and evaluated a provider-facing, multi-component intervention to improve TIA care at six facilities. The unit of analysis was the medical center. The intervention was developed based on benchmarking data, staff interviews, literature, and electronic quality measures and included: performance data, clinical protocols, professional education, electronic health record tools, and QI support. The effectiveness outcome was the without-fail rate: the proportion of patients who receive all processes of care for which they are eligible among seven processes. The implementation outcomes were the number of implementation activities completed and final team organization level. The intervention effects on the without-fail rate were analyzed using generalized mixed-effects models with multilevel hierarchical random effects. Mixed methods were used to assess implementation, user satisfaction, and sustainability. DISCUSSION: PREVENT advanced three aspects of a Learning Healthcare System. Learning from Data: teams examined and interacted with their performance data to explore hypotheses, plan QI activities, and evaluate change over time. Learning from Each Other: Teams participated in monthly virtual collaborative calls. Sharing Best Practices: Teams shared tools and best practices. The approach used to design and implement PREVENT may be generalizable to other clinical conditions where time-sensitive care spans clinical settings and medical disciplines. TRIAL REGISTRATION: clinicaltrials.gov: NCT02769338 [May 11, 2016].


Assuntos
Diagnóstico Precoce , Ataque Isquêmico Transitório/diagnóstico , Melhoria de Qualidade , Protocolos Clínicos , Atenção à Saúde/métodos , Humanos , Avaliação de Programas e Projetos de Saúde , Veteranos
10.
Phys Rev Lett ; 121(20): 207003, 2018 Nov 16.
Artigo em Inglês | MEDLINE | ID: mdl-30500229

RESUMO

A general feature of unconventional superconductors is the existence of a superconducting dome in the phase diagram. Here we report a series of discrete superconducting phases in the simplest iron-based superconductor, FeSe thin flakes, by continuously tuning the carrier concentration through the intercalation of Li and Na ions with a solid ionic gating technique. Such discrete superconducting phases are robust against the substitution of 20% S for Se, but they are vulnerable to the substitution of 2% Cu for Fe, highlighting the importance of the iron site being intact. The superconducting phase diagram for FeSe derivatives is given, which is distinct from that of other unconventional superconductors.

11.
J Nanosci Nanotechnol ; 18(6): 4082-4086, 2018 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-29442746

RESUMO

Disposable microfluidic chips are becoming increasingly important for biological and chemical researches. Future advances in their commercial applications depends on the mass fabrication of low cost microfluidic chip. In this study we are presenting a simple, low cost and fast way of fabricating PMMA microfluidic chips based on laser erosion. The influence of the width and depth of PMMA microchannels on erosion current and erosion times was analyzed. To bond the open PMMA microchannels at low pressure and temperature, sticky tape assist bonding method was proposed. By this method, the microfluidic chip can be fully sealed without using any equipment. The leakage test indicated that the bonded microfluidic chip can endure an pressure up to 0.82 MPa.

12.
Pharmacogenomics J ; 16(4): 303-4, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27168097

RESUMO

Clinical applications of prenatal genetic screening currently focus on detection of aneuploidy and other genetic diseases in the developing fetus. Growing evidence suggests that the fetal genome may also be informative about fetal exposures through contributions to placental transport as well as placental and fetal metabolism. Possible clinical applications of prenatal pharmacogenomic screening include prospective optimization of medication selection and dosage, as well as retrospective assessment of whether a fetus was previously exposed to significant risk. Newly available noninvasive methods of prenatal genetic screening mean that relevant fetal genotypes could be made available to obstetricians for use in management of a current pregnancy. This promising area for research merits more attention than it has thus far received.The Pharmacogenomics Journal advance online publication, 10 May 2016; doi:10.1038/tpj.2016.33.


Assuntos
Pesquisa Biomédica/métodos , Sistema Enzimático do Citocromo P-450/genética , Proteínas de Membrana Transportadoras/genética , Farmacogenética/métodos , Testes Farmacogenômicos , Variantes Farmacogenômicos , Diagnóstico Pré-Natal/métodos , Animais , Biotransformação , Sistema Enzimático do Citocromo P-450/metabolismo , Feminino , Feto/metabolismo , Genótipo , Humanos , Proteínas de Membrana Transportadoras/metabolismo , Fenótipo , Placenta/metabolismo , Gravidez
13.
Blood ; 123(25): 3972-8, 2014 Jun 19.
Artigo em Inglês | MEDLINE | ID: mdl-24782507

RESUMO

Active cancer is the major predictor of venous thromboembolism (VTE) recurrence, but further stratification of recurrence risk is uncertain. In a population-based cohort study of all Olmsted County, Minnesota, residents with active cancer-related incident VTE during the 35-year period from 1966 to 2000 who survived 1 day or longer, we estimated VTE recurrence, bleeding on anticoagulant therapy, and survival and tested cancer and noncancer characteristics and secondary prophylaxis as predictors of VTE recurrence and bleeding, using Cox proportional hazards modeling. Of 477 patients, 139 developed recurrent VTE over the course of 1533 person-years of follow-up. The adjusted 10-year cumulative VTE recurrence rate was 28.6%. The adjusted 90-day cumulative incidence of major bleeding on anticoagulation was 1.9%. Survival was significantly worse for patients with cancer who had recurrent VTE (particularly pulmonary embolism) and with bleeding on anticoagulation. In a multivariable model, brain, lung, and ovarian cancer; myeloproliferative or myelodysplastic disorders; stage IV pancreatic cancer; other stage IV cancer; cancer stage progression; and leg paresis were associated with an increased hazard, and warfarin therapy was associated with a reduced hazard, of recurrent VTE. Recurrence rates were significantly higher for cancer patients with 1 or more vs no predictors of recurrence, suggesting these predictors may be useful for stratifying recurrence risk.


Assuntos
Hemorragia/epidemiologia , Neoplasias/epidemiologia , Vigilância da População/métodos , Tromboembolia Venosa/epidemiologia , Idoso , Anticoagulantes/uso terapêutico , Estudos de Coortes , Comorbidade , Feminino , Humanos , Incidência , Perna (Membro)/fisiopatologia , Masculino , Pessoa de Meia-Idade , Minnesota/epidemiologia , Análise Multivariada , Estadiamento de Neoplasias , Neoplasias/patologia , Paresia/epidemiologia , Prognóstico , Modelos de Riscos Proporcionais , Recidiva , Medição de Risco/métodos , Medição de Risco/estatística & dados numéricos , Fatores de Risco , Tromboembolia Venosa/tratamento farmacológico , Tromboembolia Venosa/patologia , Varfarina/uso terapêutico
14.
Nanotechnology ; 26(21): 215302, 2015 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-25946991

RESUMO

A method for obtaining a low-cost and high-replication precision two-dimensional (2D) nanofluidic device with a polymethyl methacrylate (PMMA) sheet is proposed. To improve the replication precision of the 2D PMMA nanochannels during the hot embossing process, the deformation of the PMMA sheet was analyzed by a numerical simulation method. The constants of the generalized Maxwell model used in the numerical simulation were calculated by experimental compressive creep curves based on previously established fitting formula. With optimized process parameters, 176 nm-wide and 180 nm-deep nanochannels were successfully replicated into the PMMA sheet with a replication precision of 98.2%. To thermal bond the 2D PMMA nanochannels with high bonding strength and low dimensional loss, the parameters of the oxygen plasma treatment and thermal bonding process were optimized. In order to measure the dimensional loss of 2D nanochannels after thermal bonding, a dimension loss evaluating method based on the nanoindentation experiments was proposed. According to the dimension loss evaluating method, the total dimensional loss of 2D nanochannels was 6 nm and 21 nm in width and depth, respectively. The tensile bonding strength of the 2D PMMA nanofluidic device was 0.57 MPa. The fluorescence images demonstrate that there was no blocking or leakage over the entire microchannels and nanochannels.

15.
Oncologist ; 19(7): 704-11, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24869929

RESUMO

The decision regarding adjuvant therapy for patients with stage II colon cancer remains a challenge. In contrast to stage III colon cancer, for which compelling clinical data support the use of adjuvant chemotherapy, the clinical benefit of systemic therapy in unselected patients with stage II disease is modest at best. Risk stratification based on clinicopathologic features and DNA mismatch repair status is commonly used in adjuvant therapy decisions, but these factors do not have a desired level of precision in identifying patients at high risk. Recently, gene expression platforms have been developed to further define risk and to assist in therapeutic decision making for patients with stage II disease. This review describes those platforms that are furthest along in clinical development, in an effort to place their potential clinical application in context.


Assuntos
Neoplasias do Colo/tratamento farmacológico , Neoplasias do Colo/genética , Tomada de Decisões , Quimioterapia Adjuvante , Neoplasias do Colo/patologia , Neoplasias do Colo/cirurgia , Perfilação da Expressão Gênica , Humanos , Estadiamento de Neoplasias
16.
Lung Cancer ; 188: 107442, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-38171156

RESUMO

OBJECTIVES: NTRK fusions result in constitutively active oncogenic TRK proteins responsible for âˆ¼ 0.2 % of non-small cell lung cancer (NSCLC) cases. Approximately 40 % of patients with advanced NSCLC develop CNS metastases; therefore, treatments with intracranial (IC) efficacy are needed. In an integrated analysis of three phase I/II studies (ALKA-372-001: EudraCT 2012-000148-88; STARTRK-1: NCT02097810; STARTRK-2: NCT02568267), entrectinib, a potent, CNS-active, TRK inhibitor, demonstrated efficacy in patients with NTRK fusion-positive (fp) NSCLC (objective response rate [ORR]: 64.5 %; 2 August 2021 data cut-off). We present updated data for this cohort. MATERIALS AND METHODS: Eligible patients were ≥ 18 years with locally advanced/metastatic, NTRK-fp NSCLC with ≥ 12 months of follow-up. Tumor responses were assessed by blinded independent central review (BICR) per RECIST v1.1 at Week 4 and every eight weeks thereafter. Co-primary endpoints: ORR; duration of response (DoR). Secondary endpoints included progression-free survival (PFS); overall survival (OS); IC efficacy; safety. Enrolment cut-off: 2 July 2021; data cut-off: 2 August 2022. RESULTS: The efficacy-evaluable population included 51 patients with NTRK-fp NSCLC. Median age was 60.0 years (range 22-88); 20 patients (39.2 %) had investigator-assessed baseline CNS metastases. Median survival follow-up was 26.3 months (95 % CI 21.0-34.1). ORR was 62.7 % (95 % CI 48.1-75.9), with six complete and 26 partial responses. Median DoR and PFS were 27.3 months (95 % CI 19.9-30.9) and 28.0 months (95 % CI 15.7-30.4), respectively. Median OS was 41.5 months. In patients with BICR-assessed baseline CNS metastases, IC-ORR was 64.3 % (n = 9/14; 95 % CI 35.1-87.2), including seven complete responders, and IC-DoR was 55.7 months. In the safety-evaluable population (n = 55), most treatment-related adverse events were grade 1/2; no treatment-related deaths were reported. CONCLUSION: Entrectinib has continued to demonstrate deep and durable systemic and IC responses in patients with NTRK-fp NSCLC.


Assuntos
Antineoplásicos , Benzamidas , Carcinoma Pulmonar de Células não Pequenas , Neoplasias do Sistema Nervoso Central , Neoplasias Pulmonares , Humanos , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Carcinoma Pulmonar de Células não Pequenas/patologia , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/induzido quimicamente , Antineoplásicos/uso terapêutico , Indazóis , Neoplasias do Sistema Nervoso Central/tratamento farmacológico , Neoplasias do Sistema Nervoso Central/genética , Inibidores de Proteínas Quinases/efeitos adversos
17.
Growth Factors ; 31(6): 185-98, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24116709

RESUMO

Abnormal adipogenesis leads to excessive fat accumulation and several health disorders. Mouse fibroblasts (MLC) transfected with ADAM 12S and HB-EGF promoted lipid accumulation. Addition of KBR-7785, an ADAM 12S inhibitor, to HB-EGF/ADAM 12S expressing cells suppressed adipogenesis. BrdU incorporation was attenuated and enhanced mitotracker staining was observed in HB-EGF/ADAM 12S cells. Quantitative real time RT-PCR resulted in elevated levels of expression of three brown adipose tissue (BAT) genes (PRDM16, PGC-1α, and UCP-1), while expression levels of the three white adipose tissue (WAT) genes (PPARγ, C/EBPα, and AKT-1) were unaltered in HB-EGF/ADAM 12S cells. Amino- or carboxy-terminal deletions of HB-EGF (HB-EGFΔN and HB-EGFΔC) co-expressed with ADAM 12S stimulated lipid accumulation. Human epidermoid carcinoma cells (A431) also exhibited lipid accumulation by HB-EGF/ADAM 12S co-expression. These studies suggest ADAM 12S and HB-EGF are involved in cellular plasticity resulting in the production of BAT-like cells and offers insight into novel therapeutic approaches for fighting obesity.


Assuntos
Proteínas ADAM/genética , Tecido Adiposo Marrom/citologia , Tecido Adiposo Marrom/metabolismo , Diferenciação Celular , Peptídeos e Proteínas de Sinalização Intercelular/genética , Proteínas de Membrana/genética , Proteína ADAM12 , Adipogenia/efeitos dos fármacos , Adipogenia/genética , Animais , Carcinoma de Células Escamosas , Linhagem Celular , Linhagem Celular Tumoral , Proliferação de Células , Fibroblastos , Expressão Gênica , Fator de Crescimento Semelhante a EGF de Ligação à Heparina , Humanos , Metabolismo dos Lipídeos , Inibidores de Metaloproteinases de Matriz/farmacologia , Camundongos , Fenótipo , Proteínas Recombinantes/biossíntese , Proteínas Recombinantes/genética , Transfecção
18.
Blood ; 118(10): 2702-7, 2011 Sep 08.
Artigo em Inglês | MEDLINE | ID: mdl-21750316

RESUMO

Standard myeloma treatment response criteria are determined principally by changes in the monoclonal protein. Reduction in the size of the proliferative component of malignant plasma cells may be an additional metric of assessing response to therapy. We retrospectively analyzed 176 patients with newly diagnosed myeloma with a measurable plasma cell labeling index (PCLI) at diagnosis and repeat measurement 4 months after initiation of therapy. PCLI response was defined as a ≥ 60% reduction. Baseline PCLI is an independent prognostic factor; therefore, we categorized patients into 3 groups: PCLI ≥ 3% (high), ≥ 1% (intermediate), and < 1% (low). Patients achieving a greater PCLI response had improved median overall survival of 54 months compared with 29 months in nonresponders (P = .02). Improved median overall survival with PCLI response occurred in the high initial PCLI group (28 vs 7 months; P = .003) and intermediate group (64 vs 24 months; P = .002). The application of PCLI response and serum M-spike response together provided further prognostic information. On multivariate analysis, the prognostic value of PCLI response was independent of ß(2)-microglobulin, elevated creatinine, serum M-spike response, and baseline PCLI. We conclude that a significant reduction in plasma cell proliferation in patients with newly diagnosed myeloma is an important predictor of survival.


Assuntos
Proliferação de Células , Mieloma Múltiplo/mortalidade , Mieloma Múltiplo/terapia , Plasmócitos/citologia , Adulto , Idoso , Medula Óssea/metabolismo , Medula Óssea/patologia , Proteína C-Reativa/metabolismo , Feminino , Imunofluorescência , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Índice Mitótico , Mieloma Múltiplo/patologia , Prognóstico , Taxa de Sobrevida , Microglobulina beta-2/metabolismo
19.
Front Microbiol ; 14: 1207132, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37577423

RESUMO

Diabetic nephropathy (DN) is a severe microvascular complication of diabetes, which increases the risk of renal failure and causes a high global disease burden. Due to the lack of sustainable treatment, DN has become the primary cause of end-stage renal disease worldwide. Gut microbiota and its metabolites exert critical regulatory functions in maintaining host health and are associated with many pathogenesis of aging-related chronic diseases. Currently, the theory gut-kidney axis has opened a novel angle to understand the relationship between gut microbiota and multiple kidney diseases. In recent years, accumulating evidence has revealed that the gut microbiota and their metabolites play an essential role in the pathophysiologic processes of DN through the gut-kidney axis. In this review, we summarize the current investigations of gut microbiota and microbial metabolites involvement in the progression of DN, and further discuss the potential gut microbiota-targeted therapeutic approaches for DN.

20.
Target Oncol ; 18(3): 391-402, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-37060431

RESUMO

BACKGROUND: Phosphatase of regenerating liver-3 (PRL-3) is involved in cellular processes driving metastasis, cell proliferation, invasion, motility and survival. It has been shown to be upregulated and overexpressed in cancer tissue, in contrast to low or no expression in most normal tissue. PRL3-zumab is a first-in-class humanized antibody that specifically binds to PRL-3 oncotarget with high affinity and has been shown to reduce tumor growth and increase survival. OBJECTIVE: In the study, we aimed to determine the safety and efficacy of PRL3-zumab in patients with advanced solid tumors and hematological malignancies. METHODS: We conducted a phase I, first-in-human study in advanced solid tumors and hematological malignancies to investigate the safety, tolerability and efficacy of PRL3-zumab. Response rates were evaluated using the Response Evaluation Criteria in Solid Tumors (RECIST) guideline (version 1.1) for solid tumors. For acute myeloid leukemia (AML) patients, bone marrow response criteria based on the European Leukaemia Network (ELN) 2017 guidelines for AML were used. We also explored the pharmacokinetics and pharmacodynamic relationships of PRL3-zumab in patients. This study was registered with ClinicalTrials.gov: NCT03191682. RESULTS: In the dose-escalation cohort, 11 patients with advanced solid tumors were enrolled into the study. An additional 12 patients with solid tumors and four patients with AML were enrolled in the dose-expansion cohort. Maximum tolerability was not achieved in this study, as there were no dose-limiting toxicities. Potential treatment-emergent adverse events were grade 1 increased stoma output and fatigue and grade 2 vomiting. Best response observed was stable disease in three solid-tumor patients (11.1%). The pharmacokinetics of PRL3-zumab were dose proportional, consistent with an IgG type monoclonal antibody. CONCLUSIONS: PRL3-zumab, a first-in-class humanized antibody, was safe and tolerable in solid tumors and hematological malignancies.


Assuntos
Antineoplásicos , Neoplasias Hematológicas , Leucemia Mieloide Aguda , Neoplasias , Humanos , Neoplasias/tratamento farmacológico , Antineoplásicos/uso terapêutico , Anticorpos Monoclonais/uso terapêutico , Neoplasias Hematológicas/tratamento farmacológico , Dose Máxima Tolerável
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