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1.
Altern Ther Health Med ; 30(11): 340-345, 2024 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-38430161

RESUMEN

Objective: To report the efficacy and safety of combination therapy with selinexor, palbociclib, pembrolizumab, and umbilical cord blood NK cells for advanced hepatocellular carcinoma (HCC).Advanced HCC has a poor prognosis and limited effective treatment options. Exploring personalized combination treatment strategies is critically important for improving outcomes in patients with advanced HCC. This study aims to provide preliminary evaluation of the clinical effectiveness and safety of this combination regimen in this high-risk population, and lay the groundwork for larger studies to bring more treatment choices to patients with advanced HCC. Methods: A 67-year-old male patient with advanced HCC and multiple metastases was treated with palbociclib 75mg on days 1-14 of a 28-day cycle, pembrolizumab 200mg intravenous infusion, selinexor 40mg weekly, and umbilical cord blood NK cell (12×109 cells) infusion on days 1, 14, 28 and 42. Imaging examinations and tumor marker detection were performed before and after two cycles of treatment to evaluate response. Results: After two cycles of combination treatment, follow-up PET-CT showed partial response with the liver tumors reduced in size by approximately 60%, lung metastases reduced by approximately 90%, and FDG uptake decreased more than 90% in lymph nodes and bone metastases. The AFP level decreased compared to baseline. Liver function tests including albumin, bilirubin and prothrombin time improved. The patient's performance status also improved from ECOG 2 to ECOG 1. Conclusions: This case report describes preliminary signals that the combination of selinexor, palbociclib, pembrolizumab, and umbilical cord blood NK cells may warrant further investigation for the treatment of advanced HCC. Objective response was observed based on standardized response criteria. However, due to the limitations of a single-arm case study design, definitive conclusions cannot be drawn regarding the efficacy or safety profile of this personalized combination approach. Larger and more robust clinical trials are needed to fully validate if this treatment strategy can achieve clinical benefit for advanced HCC. Future studies should aim to elucidate potential biomarkers that may help identify patients most likely to respond to this combination regimen. Exploring optimal patient selection criteria could also help maximize clinical benefit. Further research is warranted to continue exploring precision medicine combinations involving immunotherapy, targeted agents and cellular therapies for advanced HCC.


Asunto(s)
Anticuerpos Monoclonales Humanizados , Carcinoma Hepatocelular , Hidrazinas , Neoplasias Hepáticas , Piperazinas , Piridinas , Triazoles , Humanos , Masculino , Neoplasias Hepáticas/tratamiento farmacológico , Triazoles/uso terapéutico , Carcinoma Hepatocelular/tratamiento farmacológico , Anciano , Piridinas/uso terapéutico , Piridinas/farmacología , Anticuerpos Monoclonales Humanizados/uso terapéutico , Anticuerpos Monoclonales Humanizados/farmacología , Hidrazinas/uso terapéutico , Hidrazinas/farmacología , Piperazinas/uso terapéutico , Células Asesinas Naturales/efectos de los fármacos , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Medicina de Precisión
2.
N Engl J Med ; 387(9): 799-809, 2022 09 01.
Artículo en Inglés | MEDLINE | ID: mdl-36053505

RESUMEN

BACKGROUND: Data on the effectiveness and safety of dolutegravir-based antiretroviral therapy (ART) for human immunodeficiency virus type 1 (HIV-1) infection in pregnancy as compared with other ART regimens commonly used in the United States and Europe, particularly when initiated before conception, are limited. METHODS: We conducted a study involving pregnancies in persons with HIV-1 infection in the Pediatric HIV/AIDS Cohort Study whose initial ART in pregnancy included dolutegravir, atazanavir-ritonavir, darunavir-ritonavir, oral rilpivirine, raltegravir, or elvitegravir-cobicistat. Viral suppression at delivery and the risks of infants being born preterm, having low birth weight, and being small for gestational age were compared between each non-dolutegravir-based ART regimen and dolutegravir-based ART. Supplementary analyses that included participants in the Swiss Mother and Child HIV Cohort Study were conducted to improve the precision of our results. RESULTS: Of the pregnancies in the study, 120 were in participants who received dolutegravir, 464 in those who received atazanavir-ritonavir, 185 in those who received darunavir-ritonavir, 243 in those who received rilpivirine, 86 in those who received raltegravir, and 159 in those who received elvitegravir-cobicistat. The median age at conception was 29 years; 51% of the pregnancies were in participants who started ART before conception. Viral suppression was present at delivery in 96.7% of the pregnancies in participants who received dolutegravir; corresponding percentages were 84.0% for atazanavir-ritonavir, 89.2% for raltegravir, and 89.8% for elvitegravir-cobicistat (adjusted risk differences vs. dolutegravir, -13.0 percentage points [95% confidence interval {CI}, -17.0 to -6.1], -17.0 percentage points [95% CI, -27.0 to -2.4], and -7.0 percentage points [95% CI, -13.3 to -0.0], respectively). The observed risks of preterm birth were 13.6 to 17.6%. Adjusted risks of infants being born preterm, having low birth weight, or being small for gestational age did not differ substantially between non-dolutegravir-based ART and dolutegravir. Results of supplementary analyses were similar. CONCLUSIONS: Atazanavir-ritonavir and raltegravir were associated with less frequent viral suppression at delivery than dolutegravir. No clear differences in adverse birth outcomes were observed with dolutegravir-based ART as compared with non-dolutegravir-based ART, although samples were small. (Funded by the Eunice Kennedy Shriver National Institute of Child Health and Human Development and others.).


Asunto(s)
Fármacos Anti-VIH , Infecciones por VIH , Inhibidores de la Proteasa del VIH , VIH-1 , Compuestos Heterocíclicos con 3 Anillos , Oxazinas , Piperazinas , Nacimiento Prematuro , Piridonas , Adulto , Fármacos Anti-VIH/efectos adversos , Fármacos Anti-VIH/uso terapéutico , Sulfato de Atazanavir/efectos adversos , Sulfato de Atazanavir/uso terapéutico , Cobicistat/efectos adversos , Cobicistat/uso terapéutico , Estudios de Cohortes , Darunavir/efectos adversos , Darunavir/uso terapéutico , Femenino , Infecciones por VIH/tratamiento farmacológico , Inhibidores de la Proteasa del VIH/efectos adversos , Inhibidores de la Proteasa del VIH/uso terapéutico , Compuestos Heterocíclicos con 3 Anillos/efectos adversos , Compuestos Heterocíclicos con 3 Anillos/uso terapéutico , Humanos , Recién Nacido , Oxazinas/efectos adversos , Oxazinas/uso terapéutico , Piperazinas/efectos adversos , Piperazinas/uso terapéutico , Embarazo , Nacimiento Prematuro/inducido químicamente , Piridonas/efectos adversos , Piridonas/uso terapéutico , Quinolonas/efectos adversos , Quinolonas/uso terapéutico , Raltegravir Potásico/efectos adversos , Raltegravir Potásico/uso terapéutico , Rilpivirina/efectos adversos , Rilpivirina/uso terapéutico , Ritonavir/efectos adversos , Ritonavir/uso terapéutico , Estados Unidos
3.
Nat Commun ; 13(1): 676, 2022 02 03.
Artículo en Inglés | MEDLINE | ID: mdl-35115492

RESUMEN

Ferroptosis is a nonapoptotic cell death process that requires cellular iron and the accumulation of lipid peroxides. In progressive rheumatoid arthritis (RA), synovial fibroblasts proliferate abnormally in the presence of reactive oxygen species (ROS) and elevated lipid oxidation. Here we show, using a collagen-induced arthritis (CIA) mouse model, that imidazole ketone erastin (IKE), a ferroptosis inducer, decreases fibroblast numbers in the synovium. Data from single-cell RNA sequencing further identify two groups of fibroblasts that have distinct susceptibility to IKE-induced ferroptosis, with the ferroptosis-resistant fibroblasts associated with an increased TNF-related transcriptome. Mechanistically, TNF signaling promotes cystine uptake and biosynthesis of glutathione (GSH) to protect fibroblasts from ferroptosis. Lastly, low dose IKE together with etanercept, a TNF antagonist, induce ferroptosis in fibroblasts and attenuate arthritis progression in the CIA model. Our results thus imply that the combination of TNF inhibitors and ferroptosis inducers may serve as a potential candidate for RA therapy.


Asunto(s)
Artritis Experimental/prevención & control , Artritis Reumatoide/prevención & control , Ferroptosis/efectos de los fármacos , Fibroblastos/efectos de los fármacos , Imidazoles/farmacología , Cetonas/farmacología , Piperazinas/farmacología , Inhibidores del Factor de Necrosis Tumoral/farmacología , Animales , Artritis Experimental/genética , Artritis Experimental/metabolismo , Artritis Reumatoide/genética , Artritis Reumatoide/metabolismo , Células Cultivadas , Modelos Animales de Enfermedad , Quimioterapia Combinada , Etanercept/farmacología , Etanercept/uso terapéutico , Fibroblastos/citología , Fibroblastos/metabolismo , Glutatión/metabolismo , Humanos , Imidazoles/uso terapéutico , Cetonas/uso terapéutico , Peroxidación de Lípido/efectos de los fármacos , Ratones , Piperazinas/uso terapéutico , Especies Reactivas de Oxígeno/metabolismo , Membrana Sinovial/citología , Inhibidores del Factor de Necrosis Tumoral/uso terapéutico
4.
Sci Rep ; 11(1): 21396, 2021 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-34725436

RESUMEN

Both EZH2 and its homolog EZH1 function as histone H3 Lysine 27 (H3K27) methyltransferases and repress the transcription of target genes. Dysregulation of H3K27 trimethylation (H3K27me3) plays an important role in the development and progression of cancers such as hepatocellular carcinoma (HCC). This study investigated the relationship between the expression of EZH1/2 and the level of H3K27me3 in HCC. Additionally, the role of EZH1/2 in cell growth, tumorigenicity, and resistance to sorafenib were also analyzed. Both the lentiviral knockdown and the pharmacological inhibition of EZH1/2 (UNC1999) diminished the level of H3K27me3 and suppressed cell growth in liver cancer cells, compared with EZH1 or EZH2 single knockdown. Although a significant association was observed between EZH2 expression and H3K27me3 levels in HCC samples, overexpression of EZH1 appeared to contribute to enhanced H3K27me3 levels in some EZH2lowH3K27me3high cases. Akt suppression following sorafenib treatment resulted in an increase of the H3K27me3 levels through a decrease in EZH2 phosphorylation at serine 21. The combined use of sorafenib and UNC1999 exhibited synergistic antitumor effects in vitro and in vivo. Combination treatment canceled the sorafenib-induced enhancement in H3K27me3 levels, indicating that activation of EZH2 function is one of the mechanisms of sorafenib-resistance in HCC. In conclusion, sorafenib plus EZH1/2 inhibitors may comprise a novel therapeutic approach in HCC.


Asunto(s)
Antineoplásicos/uso terapéutico , Benzamidas/uso terapéutico , Carcinoma Hepatocelular/terapia , Proteína Potenciadora del Homólogo Zeste 2/antagonistas & inhibidores , Indazoles/uso terapéutico , Neoplasias Hepáticas/terapia , Piperazinas/uso terapéutico , Complejo Represivo Polycomb 2/antagonistas & inhibidores , Piridonas/uso terapéutico , Sorafenib/uso terapéutico , Anciano , Animales , Carcinoma Hepatocelular/genética , Línea Celular Tumoral , Regulación hacia Abajo/efectos de los fármacos , Proteína Potenciadora del Homólogo Zeste 2/genética , Femenino , Terapia Genética , Humanos , Neoplasias Hepáticas/genética , Masculino , Ratones SCID , Persona de Mediana Edad , Complejo Represivo Polycomb 2/genética
5.
Front Immunol ; 12: 705361, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34489957

RESUMEN

Immunogenic cell death (ICD) is a form of regulated cell death (RCD) induced by various stresses and produces antitumor immunity via damage-associated molecular patterns (DAMPs) release or exposure, mainly including high mobility group box 1 (HMGB1), calreticulin (CRT), adenosine triphosphate (ATP), and heat shock proteins (HSPs). Emerging evidence has suggested that ionizing radiation (IR) can induce ICD, and the dose, type, and fractionation of irradiation influence the induction of ICD. At present, IR-induced ICD is mainly verified in vitro in mice and there is few clinical evidence about it. To boost the induction of ICD by IR, some strategies have shown synergy with IR to enhance antitumor immune response, such as hyperthermia, nanoparticles, and chemotherapy. In this review, we focus on the molecular mechanisms of ICD, ICD-promoting factors associated with irradiation, the clinical evidence of ICD, and immunogenic forms of cell death. Finally, we summarize various methods of improving ICD induced by IR.


Asunto(s)
Muerte Celular Inmunogénica/efectos de la radiación , Alarminas/fisiología , Animales , Antígenos de Neoplasias/inmunología , Biomarcadores , Terapia Combinada , Citocinas/fisiología , Relación Dosis-Respuesta en la Radiación , Ferroptosis/efectos de la radiación , Proteína HMGB1/fisiología , Humanos , Hipertermia Inducida , Ratones , Morfolinas/uso terapéutico , Necroptosis/efectos de la radiación , Neoplasias/tratamiento farmacológico , Neoplasias/inmunología , Neoplasias/radioterapia , Piperazinas/uso terapéutico , Pirroles/uso terapéutico , Tolerancia a Radiación , Radiación Ionizante
6.
Hepatology ; 74(4): 1971-1993, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-33931882

RESUMEN

BACKGROUND AND AIMS: Synthetic cyclin-dependent kinase (CDK) 4/6 inhibitors exert antitumor effects by forcing RB1 in unphosphorylated status, causing not only cell cycle arrest but also cellular senescence, apoptosis, and increased immunogenicity. These agents currently have an indication in advanced breast cancers and are in clinical trials for many other solid tumors. HCC is one of promising targets of CDK4/6 inhibitors. RB family dysfunction is often associated with the initiation of HCC; however, this is revivable, as RB family members are not frequently mutated or deleted in this malignancy. APPROACH AND RESULTS: Loss of all Rb family members in transformation related protein 53 (Trp53)-/- mouse liver resulted in liver tumor reminiscent of human HCC, and re-expression of RB1 sensitized these tumors to a CDK4/6 inhibitor, palbociclib. Introduction of an unphosphorylatable form of RB1 (RB7LP) into multiple liver tumor cell lines induced effects similar to palbociclib. By screening for compounds that enhance the efficacy of RB7LP, we identified an I kappa B kinase (IKK)ß inhibitor Bay 11-7082. Consistently, RB7LP expression and treatment with palbociclib enhanced IKKα/ß phosphorylation and NF-κB activation. Combination therapy using palbociclib with Bay 11-7082 was significantly more effective in hepatoblastoma and HCC treatment than single administration. Moreover, blockade of IKK-NF-κB or AKT pathway enhanced effects of palbociclib on RB1-intact KRAS Kirsten rat sarcoma viral oncogene homolog mutated lung and colon cancers. CONCLUSIONS: In conclusion, CDK4/6 inhibitors have a potential to treat a wide variety of RB1-intact cancers including HCC when combined with an appropriate kinase inhibitor.


Asunto(s)
Carcinoma Hepatocelular/tratamiento farmacológico , Proliferación Celular/efectos de los fármacos , Neoplasias Hepáticas/tratamiento farmacológico , Piperazinas/farmacología , Inhibidores de Proteínas Quinasas/farmacología , Piridinas/farmacología , Aminopiridinas/farmacología , Aminopiridinas/uso terapéutico , Animales , Bencimidazoles/farmacología , Bencimidazoles/uso terapéutico , Carcinoma Hepatocelular/genética , Proliferación Celular/genética , Supervivencia Celular/efectos de los fármacos , Quinasa 4 Dependiente de la Ciclina/antagonistas & inhibidores , Quinasa 6 Dependiente de la Ciclina/antagonistas & inhibidores , Células Hep G2 , Humanos , Técnicas In Vitro , Neoplasias Hepáticas/genética , Neoplasias Hepáticas Experimentales/tratamiento farmacológico , Neoplasias Hepáticas Experimentales/genética , Ratones , Trasplante de Neoplasias , Piperazinas/uso terapéutico , Inhibidores de Proteínas Quinasas/uso terapéutico , Purinas/farmacología , Purinas/uso terapéutico , Piridinas/uso terapéutico , Proteína de Retinoblastoma , Proteína p53 Supresora de Tumor/genética , Proteínas de Xenopus
7.
Metabolism ; 119: 154749, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-33722534

RESUMEN

BACKGROUND: Polycystic ovary syndrome (PCOS) is the most common metabolic and endocrine disorder among reproductive-age women, and the leading cause of anovulatory infertility. 11ß-hydroxysteroid dehydrogenases-1 (11ß-HSD1) catalysing the conversion of inactive cortisone to active cortisol plays a crucial role in various metabolic diseases. However, whether 11ß-HSD1 is associated with the pathogenesis of PCOS and whether 11ß-HSD1 can be a treating target of PCOS remain unknown. METHODS: This study was first designed to explore the role of 11ß-HSD1 in PCOS development and the effect of selective 11ß-HSD1 inhibitor administration on PCOS treatment. Follicular fluid and granulosa cells (GCs) were collected from 32 non-PCOS patients and 37 patients with PCOS to measure cortisol and 11ß-HSDs levels. Female Sprague-Dawley rats (3-week-old) were injected with dehydroepiandrosterone (DHEA) to induce PCOS and their ovaries were collected to measure the abundance of corticosterone (CORT) and 11ß-HSDs. To determine the role of 11ß-HSD1 in PCOS development, we overexpressed 11ß-HSD1 in the ovaries of female rats (5-week-old) or knocked down the expression of 11ß-HSD1 in the ovaries from PCOS rats via lentivirus injection. After lentivirus infection, the body weights, ovarian weights, estrous cycles, reproductive hormones and morphology of the ovary were analysed in rats from different experimental groups. Then to figure out the translational potential of the selective 11ß-HSD1 inhibitor in treating PCOS, PCOS rats were treated with BVT.2733, a selective 11ß-HSD1 inhibitor and a cluster of PCOS-like traits were analysed, including insulin sensitivity, ovulatory function and fertility of rats from the Control, PCOS and PCOS+BVT groups. Rat ovarian explants and human GCs were used to explore the effect of CORT or cortisol on ovarian extracellular matrix remodelling. RESULTS: The elevated expression of 11ß-HSD1 contributed to the increased cortisol and corticosterone (CORT) concentrations observed in the ovaries of PCOS patients and PCOS rats respectively. Our results showed that ovarian overexpression of 11ß-HSD1 induced a cluster of PCOS phenotypes in rats including irregular estrous cycles, reproductive hormone dysfunction and polycystic ovaries. While knockdown of ovarian 11ß-HSD1 of PCOS rats reversed these PCOS-like changes. Additionally, the selective 11ß-HSD1 inhibitor BVT.2733 alleviated PCOS symptoms such as insulin resistance (IR), irregular estrous cycles, reproductive hormone dysfunction, polycystic ovaries, ovulatory dysfunction and subfertility. Moreover, we showed that cortisol target ovarian insulin signalling pathway and ovarian extracellular matrix (ECM) remodelling in vivo, in ovarian explants and in GCs. CONCLUSION: Elevated 11ß-HSD1 abundance in ovarian is involved in the pathogenesis of PCOS by impairing insulin signalling pathway and ECM remodelling. Selective inhibition of 11ß-HSD1 ameliorates a cluster of PCOS phenotypes. Our study demonstrates the selective 11ß-HSD1 inhibitor as a novel and promising strategy for the treatment of PCOS.


Asunto(s)
11-beta-Hidroxiesteroide Deshidrogenasa de Tipo 1/antagonistas & inhibidores , 11-beta-Hidroxiesteroide Deshidrogenasa de Tipo 1/fisiología , Piperazinas/uso terapéutico , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Sulfonamidas/uso terapéutico , Tiazoles/uso terapéutico , 11-beta-Hidroxiesteroide Deshidrogenasa de Tipo 1/metabolismo , Animales , Células Cultivadas , Modelos Animales de Enfermedad , Evaluación Preclínica de Medicamentos , Inhibidores Enzimáticos/farmacología , Inhibidores Enzimáticos/uso terapéutico , Femenino , Humanos , Infertilidad Femenina/tratamiento farmacológico , Infertilidad Femenina/metabolismo , Infertilidad Femenina/patología , Resistencia a la Insulina/fisiología , Ovario/enzimología , Ovario/metabolismo , Piperazinas/farmacología , Síndrome del Ovario Poliquístico/etiología , Síndrome del Ovario Poliquístico/metabolismo , Síndrome del Ovario Poliquístico/patología , Ratas , Ratas Sprague-Dawley , Sulfonamidas/farmacología , Tiazoles/farmacología
8.
Molecules ; 26(4)2021 Feb 11.
Artículo en Inglés | MEDLINE | ID: mdl-33670094

RESUMEN

Unapproved ingredients included in herbal medicines and dietary supplements have been detected as adulterated synthetic drugs used for erectile dysfunction. Extraction from a dietary supplement was performed to isolate the compounds by HPLC analysis. The structural characterization was confirmed using mass spectrometry (ESI-TOF/MS and LC-MS/MS), 1H NMR, and 13C NMR spectroscopy techniques. Results identified the thus-obtained compound to be sulfoaildenafil, a thioketone analogue of sildenafil. The biological activities of this active compound have been focused for the first time by the experimental point of view performance in vitro. The results revealed that sulfoaildenafil can affect the therapeutic level of nitric oxide through the upregulation of nitric oxide synthase and phosphodiesterase type 5 (PDE5) gene expressions. This bulk material, which displays structural similarity to sildenafil, was analyzed for the presence of a PDE5 inhibitor using a theoretical calculation. These unique features of the potential activity of PDE5 protein and its inhibitors, sildenafil and sulfoaildenafil, may play a key consideration for understanding the mode of actions and predicting the biological activities of PDE5 inhibitors.


Asunto(s)
Fosfodiesterasas de Nucleótidos Cíclicos Tipo 5/genética , Suplementos Dietéticos , Disfunción Eréctil/tratamiento farmacológico , Inhibidores de Fosfodiesterasa 5/química , Cromatografía Líquida de Alta Presión , Fosfodiesterasas de Nucleótidos Cíclicos Tipo 5/química , Fosfodiesterasas de Nucleótidos Cíclicos Tipo 5/efectos de los fármacos , Disfunción Eréctil/patología , Regulación Enzimológica de la Expresión Génica/efectos de los fármacos , Medicina de Hierbas , Humanos , Espectroscopía de Resonancia Magnética , Masculino , Espectrometría de Masas , Modelos Moleculares , Estructura Molecular , Inhibidores de Fosfodiesterasa 5/uso terapéutico , Piperazinas/química , Piperazinas/uso terapéutico , Citrato de Sildenafil/química , Citrato de Sildenafil/uso terapéutico , Sulfonas/química , Sulfonas/uso terapéutico
9.
Lancet HIV ; 8(1): e33-e41, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-33387477

RESUMEN

BACKGROUND: Dolutegravir has been widely available in Brazil since 2017. Following the signal that infants born to women with dolutegravir exposure at conception in Botswana had a higher risk of neural tube defects (NTDs), public health leaders initiated a national investigation to evaluate periconception dolutegravir exposure among all pregnant Brazilian women with HIV and its potential association with risk of NTDs, stillbirth, or miscarriage before 22 weeks (also called spontaneous abortion). METHODS: In this retrospective, observational, national, cohort study, we identified all women with pregnancies and possible dolutegravir exposure within 8 weeks of estimated date of conception between Jan 1, 2017, and May 31, 2018, and approximately 3:1 matched pregnant women exposed to efavirenz between Jan 1, 2015, and May 31, 2018, using the Brazilian antiretroviral therapy database. We did detailed chart reviews for identified women. The primary outcomes were NTD and a composite measure of NTD, stillbirth, or miscarriage. NTD incidences were calculated with 95% CI. The composite outcome was examined with logistic regression using propensity score matching weights to balance confounders. FINDINGS: Of 1427 included women, 382 were exposed to dolutegravir within 8 weeks of estimated date of conception. During pregnancy, 183 (48%) of 382 dolutegravir-exposed and 465 (44%) of 1045 efavirenz-exposed women received folic acid supplementation. There were 1452 birth outcomes. There were no NTDs in either dolutegravir-exposed (0, 95% CI 0-0·0010) or efavirenz-exposed groups (0, 95% CI 0-0·0036). There were 23 (6%) stillbirths or miscarriages in 384 dolutegravir-exposed fetuses and 28 (3%) in the 1068 efavirenz-exposed fetuses (p=0·0037). Logistic regression models did not consistently indicate an association between dolutegravir exposure and risk of stillbirths or miscarriages. After study closure, two confirmed NTD outcomes in fetuses with periconception dolutegravir exposure were reported to public health officials. An updated estimate of NTD incidence incorporating these cases and the estimated number of additional dolutegravir-exposed pregnancies between Jan 1, 2015 and Feb 28, 2019, is 0·0018 (95% CI 0·0005-0·0067). INTERPRETATION: Neither dolutegravir nor efavirenz exposure was associated with NTDs in our national cohort; incidence of NTDs is probably well under 1% in dolutegravir-exposed HIV-positive women but still slightly above HIV-uninfected women (0·06%) in Brazil. FUNDING: The Brazilian Ministry of Health and the United States' National Institutes of Health.


Asunto(s)
Infecciones por VIH/complicaciones , Inhibidores de Integrasa VIH/efectos adversos , Compuestos Heterocíclicos con 3 Anillos/efectos adversos , Defectos del Tubo Neural/etiología , Oxazinas/efectos adversos , Piperazinas/efectos adversos , Piridonas/efectos adversos , Aborto Espontáneo/epidemiología , Aborto Espontáneo/etiología , Adulto , Terapia Antirretroviral Altamente Activa/efectos adversos , Brasil/epidemiología , Comorbilidad , Femenino , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/epidemiología , Infecciones por VIH/virología , Inhibidores de Integrasa VIH/administración & dosificación , Inhibidores de Integrasa VIH/uso terapéutico , Compuestos Heterocíclicos con 3 Anillos/administración & dosificación , Compuestos Heterocíclicos con 3 Anillos/uso terapéutico , Humanos , Defectos del Tubo Neural/diagnóstico , Defectos del Tubo Neural/epidemiología , Oxazinas/administración & dosificación , Oxazinas/uso terapéutico , Piperazinas/administración & dosificación , Piperazinas/uso terapéutico , Embarazo , Resultado del Embarazo , Piridonas/administración & dosificación , Piridonas/uso terapéutico , Estudios Retrospectivos , Mortinato , Adulto Joven
10.
Protein Cell ; 12(8): 599-620, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-33000412

RESUMEN

The cystine/glutamate antiporter SLC7A11 (also commonly known as xCT) functions to import cystine for glutathione biosynthesis and antioxidant defense and is overexpressed in multiple human cancers. Recent studies revealed that SLC7A11 overexpression promotes tumor growth partly through suppressing ferroptosis, a form of regulated cell death induced by excessive lipid peroxidation. However, cancer cells with high expression of SLC7A11 (SLC7A11high) also have to endure the significant cost associated with SLC7A11-mediated metabolic reprogramming, leading to glucose- and glutamine-dependency in SLC7A11high cancer cells, which presents potential metabolic vulnerabilities for therapeutic targeting in SLC7A11high cancer. In this review, we summarize diverse regulatory mechanisms of SLC7A11 in cancer, discuss ferroptosis-dependent and -independent functions of SLC7A11 in promoting tumor development, explore the mechanistic basis of SLC7A11-induced nutrient dependency in cancer cells, and conceptualize therapeutic strategies to target SLC7A11 in cancer treatment. This review will provide the foundation for further understanding SLC7A11 in ferroptosis, nutrient dependency, and tumor biology and for developing novel effective cancer therapies.


Asunto(s)
Sistema de Transporte de Aminoácidos y+/genética , Antineoplásicos/uso terapéutico , Cistina/metabolismo , Ferroptosis/efectos de los fármacos , Neoplasias/tratamiento farmacológico , Sistema de Transporte de Aminoácidos y+/antagonistas & inhibidores , Sistema de Transporte de Aminoácidos y+/metabolismo , Cistina/antagonistas & inhibidores , Metilación de ADN/efectos de los fármacos , Ferroptosis/genética , Regulación Neoplásica de la Expresión Génica , Glucosa/antagonistas & inhibidores , Glucosa/metabolismo , Glutamina/antagonistas & inhibidores , Glutamina/metabolismo , Glutatión/antagonistas & inhibidores , Glutatión/metabolismo , Histonas/genética , Histonas/metabolismo , Humanos , Terapia Molecular Dirigida , Neoplasias/genética , Neoplasias/metabolismo , Neoplasias/patología , Piperazinas/uso terapéutico , Transducción de Señal , Sorafenib/uso terapéutico , Sulfasalazina/uso terapéutico
12.
Sci Rep ; 10(1): 14154, 2020 08 25.
Artículo en Inglés | MEDLINE | ID: mdl-32843690

RESUMEN

The cool sensor transient receptor potential melastatin channel 8 (TRPM8) is highly expressed in trigeminal and dorsal root ganglia, playing a key role in cold hypersensitivity associated to different peripheral neuropathies. Moreover, these channels are aberrantly expressed in different cancers, and seem to participate in tumor progression, survival and invasion. Accordingly, the search for potent and selective TRPM8 modulators attracted great interest in recent years. We describe new heterocyclic TRPM8 antagonist chemotypes derived from N-cloroalkyl phenylalaninol-Phe conjugates. The cyclization of these conjugates afforded highly substituted ß-lactams and/or 2-ketopiperazine (KP) derivatives, with regioselectivity depending on the N-chloroalkyl group and the configuration. These derivatives behave as TRPM8 antagonists in the Ca2+ microfluorometry assay, and confirmed electrophysiologically for the best enantiopure ß-lactams 24a and 29a (IC50, 1.4 and 0.8 µM). Two putative binding sites by the pore zone, different from those found for typical agonists and antagonists, were identified by in silico studies for both ß-lactams and KPs. ß-Lactams 24a and 29a display antitumor activity in different human tumor cell lines (micromolar potencies, A549, HT29, PSN1), but correlation with TRPM8 expression could not be established. Additionally, compound 24a significantly reduced cold allodynia in a mice model of oxaliplatin-induced peripheral neuropathy.


Asunto(s)
Analgésicos/uso terapéutico , Antineoplásicos/uso terapéutico , Hiperalgesia/tratamiento farmacológico , Piperazinas/uso terapéutico , Canales Catiónicos TRPM/antagonistas & inhibidores , beta-Lactamas/uso terapéutico , Analgésicos/síntesis química , Analgésicos/farmacología , Animales , Antineoplásicos/síntesis química , Antineoplásicos/farmacología , Línea Celular Tumoral , Frío/efectos adversos , Simulación por Computador , Citofotometría , Evaluación Preclínica de Medicamentos , Masculino , Ratones , Modelos Moleculares , Simulación del Acoplamiento Molecular , Estructura Molecular , Oxaliplatino/toxicidad , Técnicas de Placa-Clamp , Enfermedades del Sistema Nervioso Periférico/inducido químicamente , Enfermedades del Sistema Nervioso Periférico/tratamiento farmacológico , Piperazinas/síntesis química , Piperazinas/farmacología , Relación Estructura-Actividad , beta-Lactamas/síntesis química , beta-Lactamas/farmacología
13.
Nature ; 583(7817): 620-624, 2020 07.
Artículo en Inglés | MEDLINE | ID: mdl-32669709

RESUMEN

Approximately 75% of all breast cancers express the oestrogen and/or progesterone receptors. Endocrine therapy is usually effective in these hormone-receptor-positive tumours, but primary and acquired resistance limits its long-term benefit1,2. Here we show that in mouse models of hormone-receptor-positive breast cancer, periodic fasting or a fasting-mimicking diet3-5 enhances the activity of the endocrine therapeutics tamoxifen and fulvestrant by lowering circulating IGF1, insulin and leptin and by inhibiting AKT-mTOR signalling via upregulation of EGR1 and PTEN. When fulvestrant is combined with palbociclib (a cyclin-dependent kinase 4/6 inhibitor), adding periodic cycles of a fasting-mimicking diet promotes long-lasting tumour regression and reverts acquired resistance to drug treatment. Moreover, both fasting and a fasting-mimicking diet prevent tamoxifen-induced endometrial hyperplasia. In patients with hormone-receptor-positive breast cancer receiving oestrogen therapy, cycles of a fasting-mimicking diet cause metabolic changes analogous to those observed in mice, including reduced levels of insulin, leptin and IGF1, with the last two remaining low for extended periods. In mice, these long-lasting effects are associated with long-term anti-cancer activity. These results support further clinical studies of a fasting-mimicking diet as an adjuvant to oestrogen therapy in hormone-receptor-positive breast cancer.


Asunto(s)
Neoplasias de la Mama/dietoterapia , Neoplasias de la Mama/tratamiento farmacológico , Dietoterapia/métodos , Ayuno/fisiología , Fulvestrant/uso terapéutico , Animales , Factores Biológicos/sangre , Neoplasias de la Mama/patología , Dieta Saludable/métodos , Modelos Animales de Enfermedad , Progresión de la Enfermedad , Resistencia a Antineoplásicos/efectos de los fármacos , Proteína 1 de la Respuesta de Crecimiento Precoz/metabolismo , Femenino , Fulvestrant/administración & dosificación , Humanos , Insulina/sangre , Factor I del Crecimiento Similar a la Insulina/metabolismo , Leptina/sangre , Células MCF-7 , Ratones Endogámicos NOD , Ratones SCID , Fosfohidrolasa PTEN/metabolismo , Piperazinas/administración & dosificación , Piperazinas/uso terapéutico , Piridinas/administración & dosificación , Piridinas/uso terapéutico , Receptores de Estrógenos , Receptores de Progesterona , Tamoxifeno/efectos adversos , Tamoxifeno/uso terapéutico , Ensayos Antitumor por Modelo de Xenoinjerto
14.
Medicine (Baltimore) ; 99(27): e20808, 2020 Jul 02.
Artículo en Inglés | MEDLINE | ID: mdl-32629666

RESUMEN

RATIONALE: Palbociclib (PAL) is a first-in-class selective inhibitor of the cyclin-dependent kinases 4 (CDK4) and CDK6 and is indicated for the treatment of hormone receptor (HR)-positive/human epidermal growth factor receptor 2 (HER2)-negative metastatic breast cancer (MBC) in combination with fulvestrant (FUL) in postmenopausal women. Antrodia cinnamomea (AC), a well-known Chinese folk medicine in Taiwan, possesses numerous biological capabilities, most notably an anti-tumor effect. However, the clinical use of AC as complementary medicine combined with adjuvant therapy is unexplored. In this case report, we evaluated AC combined with PAL plus FUL to reduce the tumor burden in an MBC patient. PATIENT CONCERNS: A Slovenian woman diagnosed with relapsed bone metastases of breast cancer (BC) was unable to undergo surgery and refused radiation therapy due to fear of side effects; she also feared the side effects of adjuvants. However, she was eager to live with a high quality of life. DIAGNOSIS: Stage IV, HR-positive/HER2-negative BC with relapse of bone metastases. INTERVENTIONS: After diagnosis of relapse of bone metastases, she received adjuvant with PAL plus FUL. Additionally, she chose to take AC orally (10 g/d). OUTCOMES: The pain was mostly relieved, and the side effects of adjuvant therapy reduced. Magnetic resonance imaging revealed reduction of tumor size at the fifth month of adjuvant therapy plus AC. After 14 months of adjuvant therapy plus AC, the tumors at the thoracic vertebrae T1 and T3 were found to have shrunk from 35.2 and 12.0 mm to 28.1 and 9.9 mm, respectively. Remarkably, no further metastases were observed. LESSONS: According to the circulating tumor cells (CTCs) test data, AC had better anti-tumor efficacy on active tumor cells than PAL plus FUL. Thus, AC could be an effective complementary medicine for adjuvant therapy in patients with HR-positive/HER2-negative MBC. Interestingly, continued elevation of carcinoma antigen 15-3 and lactate dehydrogenase levels but decreasing levels of alkaline phosphatase were observed, which may be indicative of the potent efficacy of treatment resulting in massive tumor cell death. The CTCs test may be a sensitive approach to monitor the progression of BC and subsequently evaluate the efficiency of therapy.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Antrodia , Neoplasias Óseas/tratamiento farmacológico , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias Óseas/secundario , Neoplasias de la Mama/patología , Femenino , Fulvestrant/uso terapéutico , Humanos , Imagen por Resonancia Magnética , Persona de Mediana Edad , Piperazinas/uso terapéutico , Piridinas/uso terapéutico , Calidad de Vida , Receptor ErbB-2/metabolismo , Receptores de Estrógenos/metabolismo
15.
Clin Ther ; 42(7): 1192-1209.e12, 2020 07.
Artículo en Inglés | MEDLINE | ID: mdl-32591103

RESUMEN

PURPOSE: The aim of this study was to evaluate the cost-effectiveness and net monetary benefit of olaparib maintenance therapy compared with no maintenance therapy after first-line platinum-based chemotherapy in newly diagnosed advanced BRCA1/2-mutated ovarian cancer from the Italian National Health Service (NHS) perspective. METHODS: We developed a lifetime Markov model in which a cohort of patients with newly diagnosed advanced BRCA1/2-mutated ovarian cancer was assigned to receive either olaparib maintenance therapy or active surveillance (Italian standard of care) after first-line platinum-based chemotherapy to compare cost-effectiveness and net monetary benefit of the 2 strategies. Data on clinical outcomes were obtained from related clinical trial literature and extrapolated using parametric survival analyses. Data on costs were derived from Italian official sources and relevant real-world studies. The incremental cost-effectiveness ratio (ICER), incremental cost-utility ratio (ICUR), and incremental net monetary benefit (INMB) were computed and compared against an incremental cost per quality-adjusted life-year (QALY) gained of €16,372 willingness-to-pay (WTP) threshold. We used deterministic sensitivity analysis (DSA) and probabilistic sensitivity analysis (PSA) to assess how uncertainty affects results; we also performed scenario analyses to compare results under different pricing settings. FINDINGS: In the base-case scenario, during a 50-year time horizon, the total costs for patients treated with olaparib therapy and active surveillance were €124,359 and €97,043, respectively, and QALYs gained were 7.29 and 4.88, respectively, with an ICER of €9,515 per life-year gained, an ICUR of €11,345 per QALY gained, and an INMB of €12,104. In scenario analyses, considering maximum selling prices for all other drugs, ICUR decreased to €11,311 per QALY and €7,498 per QALY when a 10% and 20% discount, respectively, was applied to the olaparib official price, and the INMB increased to €12,186 and €21,366, respectively. DSA found that the model results were most sensitive to the proportion of patients with relapsing disease in response to platinum-based chemotherapy, time receiving olaparib first-line maintenance treatment, and subsequent treatments price. According to PSAresults, olaparib was associated with a probability of being cost-effective at a €16,372 per QALY WTP threshold ranging from 70% to 100% in the scenarios examined. IMPLICATIONS: Our analysis indicates that olaparib maintenance therapy may deliver a significant health benefit with a contained upfront cost during a 50-year time horizon, from the Italian NHS perspective, providing value in a setting with curative intent.


Asunto(s)
Antineoplásicos/economía , Antineoplásicos/uso terapéutico , Neoplasias Ováricas/tratamiento farmacológico , Neoplasias Ováricas/economía , Ftalazinas/economía , Ftalazinas/uso terapéutico , Piperazinas/economía , Piperazinas/uso terapéutico , Proteína BRCA1/genética , Proteína BRCA2/genética , Análisis Costo-Beneficio , Método Doble Ciego , Femenino , Humanos , Italia , Persona de Mediana Edad , Mutación , Programas Nacionales de Salud , Neoplasias Ováricas/genética , Neoplasias Ováricas/mortalidad , Compuestos de Platino/economía , Compuestos de Platino/uso terapéutico , Años de Vida Ajustados por Calidad de Vida , Análisis de Supervivencia
16.
J Manag Care Spec Pharm ; 26(7): 826-831, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32584682

RESUMEN

Despite the achieved advancement in pharmacological cancer treatments, the majority of postmenopausal women with hormone receptor-positive metastatic breast cancer (mBC) will experience disease progression. Research into alternative therapies with improved efficacy and reduced side effects has led to the development of a new class of oral anticancer medications, the cyclin-dependent kinase (CDK) 4/6 inhibitors, which include palbociclib, ribociclib, and abemaciclib. Nonetheless, there is growing evidence that the effectiveness of oral anticancer medications is sub-optimal, being influenced by low adherence, sociodemographic factors, and adverse effect profiles. In addition, there is a disconnect between the high price tags of CDK 4/6 inhibitors and their observed effectiveness, raising questions about their value. Currently, the existing knowledge base on the effectiveness and cost-effectiveness of newer oral anticancer medications in understudied populations with possible health disparities is scant. This commentary discusses what is known about palbociclib's clinical effectiveness, safety, and adherence and suggests the need for further studies of real-world effectiveness and cost-effectiveness to help establish the value of newer oncologic drugs, such as palbociclib. DISCLOSURES: No funding supported the writing of this article. The authors have nothing to disclose.


Asunto(s)
Antineoplásicos/uso terapéutico , Neoplasias de la Mama/tratamiento farmacológico , Análisis Costo-Beneficio/tendencias , Piperazinas/uso terapéutico , Ensayos Clínicos Pragmáticos como Asunto/métodos , Piridinas/uso terapéutico , Receptor ErbB-2 , Antineoplásicos/economía , Neoplasias de la Mama/economía , Neoplasias de la Mama/genética , Femenino , Humanos , Piperazinas/economía , Ensayos Clínicos Pragmáticos como Asunto/economía , Piridinas/economía , Ensayos Clínicos Controlados Aleatorios como Asunto/economía , Ensayos Clínicos Controlados Aleatorios como Asunto/métodos , Receptor ErbB-2/genética
17.
Zhongguo Zhen Jiu ; 40(6): 601-4, 2020 Jun 12.
Artículo en Chino | MEDLINE | ID: mdl-32538009

RESUMEN

OBJECTIVE: To evaluate the clinical effect of filiform fire needling on moderate and severe pain in advanced cancer. METHODS: A total of 66 patients with moderate and severe pain in advanced cancer were randomly divided into an observation group (34 cases, 4 cases dropped off) and a control group (32 cases, 2 cases dropped off). The two groups were treated with oral analgesics continuously for 4 weeks. The moderate pain patients was given bucinnazine hydrochloride tablets (starting at 30 mg, once every 6 hours, increasing by 30%-50% until the titration volume was reached), and the severe pain patients were given oxycodone hydrochloride sustained-release tablets (starting at 20 mg every 12 hours and increasing by 25%-50% until the titration volume was reached). The observation group was cooperated with filiform fire needling at ashi point, Zusanli (ST 36), Liangqiu (ST 34), Qihai (CV 6), Guanyuan(CV 4), Quchi (LI 11) and Waiguan (TE 5) once every other day for 4 weeks. The changes of numerical rating scales (NRS) scores were observed in both groups before and after treatment, and the amount of analgesics and the incidence of adverse reactions were recorded. The clinical effects in the two groups were evaluated. RESULTS: The effective rate was 90.0% (27/30) in the observation group, which was higher than 66.7% (20/30) in the control group (P<0.05). After treatment, the NRS scores of both groups were lower than those before treatment (P<0.05), and the reducing degree in the observation group was larger than that in the control group (P<0.05). The average dosage of bunarizine hydrochloride tablets and oxycodone hydrochloride sustained release tablets to titration volume in the observation group was less than that in the control group (P<0.05). The incidence of adverse reactions was 23.3% (28/120) in the observation group, which was lower than 44.2% (53/120) in the control group (P<0.05). CONCLUSION: Filiform fire needling can alleviate pain symptoms of patients with moderate and severe pain in advanced cancer, reduce the amount of analgesics, and decrease the incidence of adverse reactions.


Asunto(s)
Terapia por Acupuntura , Dolor en Cáncer/terapia , Neoplasias/terapia , Manejo del Dolor , Puntos de Acupuntura , Analgésicos/uso terapéutico , Humanos , Neoplasias/complicaciones , Oxicodona/uso terapéutico , Piperazinas/uso terapéutico , Resultado del Tratamiento
18.
J Laryngol Otol ; 134(4): 316-322, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-32281535

RESUMEN

BACKGROUND: Individuals on anticoagulation therapy are at increased risk of bleeding, including epistaxis. There is a lack of available reversal agents for novel oral anticoagulation therapy. OBJECTIVE: This paper reviews the current literature on epistaxis in the context of novel oral anticoagulation use, in order to recommend guidelines on management. METHOD: A comprehensive search of published literature was conducted to identify all relevant articles published up to April 2019. RESULTS: Patients on oral anticoagulation therapy are over-represented in individuals with epistaxis. Those on novel oral anticoagulation therapy were more likely to relapse compared to patients on classic oral anticoagulants or non-anticoagulated patients. Idarucizumab is an effective antidote for bleeding associated with dabigatran use. Recommendations for epistaxis management in patients on novel oral anticoagulation therapy are outlined. CONCLUSION: Clinicians need to be aware of the potential severity of epistaxis and the increased likelihood of recurrence. High-quality studies are required to determine the efficacy and safety of andexanet alfa and ciraparantag, as well as non-specific reversal agents.


Asunto(s)
Anticuerpos Monoclonales Humanizados/uso terapéutico , Antídotos/uso terapéutico , Epistaxis/tratamiento farmacológico , Administración Oral , Anciano , Anticuerpos Monoclonales Humanizados/administración & dosificación , Anticoagulantes/efectos adversos , Anticoagulantes/uso terapéutico , Antídotos/administración & dosificación , Antitrombinas/efectos adversos , Antitrombinas/uso terapéutico , Arginina/administración & dosificación , Arginina/análogos & derivados , Arginina/uso terapéutico , Concienciación , Dabigatrán/efectos adversos , Dabigatrán/uso terapéutico , Epistaxis/inducido químicamente , Epistaxis/epidemiología , Factor Xa/administración & dosificación , Factor Xa/uso terapéutico , Inhibidores del Factor Xa/efectos adversos , Inhibidores del Factor Xa/uso terapéutico , Primeros Auxilios/normas , Humanos , Masculino , Piperazinas/administración & dosificación , Piperazinas/uso terapéutico , Prevalencia , Proteínas Recombinantes/administración & dosificación , Proteínas Recombinantes/uso terapéutico , Rivaroxabán/efectos adversos , Rivaroxabán/uso terapéutico , Índice de Severidad de la Enfermedad
19.
Future Oncol ; 16(12): 717-732, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-32249603

RESUMEN

Olaparib, an oral PARP-inhibitor, has shown clinical benefit for HER2-negative advanced breast cancer patients carrying a germinal BRCA1/2 mutation. In a randomized Phase III trial, olaparib significantly prolonged progression-free survival as compared with chemotherapy of physician choice. Moreover, in the same trial, a prespecified subgroup analysis reported an overall survival benefit for patients not previously pretreated with chemotherapy for metastatic disease. This review focuses on available preclinical, pharmacokinetic and pharmacodynamic data regarding olaparib and clinical evidence of its antitumor efficacy (both as monotherapy and in combination) and tolerability in breast cancer patients. Open questions, such as use of appropriate biomarkers for patient selection and combination/sequencing with other anticancer drugs, are also addressed.


Asunto(s)
Antineoplásicos/uso terapéutico , Neoplasias de la Mama/tratamiento farmacológico , Ftalazinas/uso terapéutico , Piperazinas/uso terapéutico , Inhibidores de Poli(ADP-Ribosa) Polimerasas/uso terapéutico , Antineoplásicos/farmacología , Neoplasias de la Mama/etiología , Neoplasias de la Mama/metabolismo , Neoplasias de la Mama/patología , Ensayos Clínicos como Asunto , Reparación del ADN/efectos de los fármacos , Susceptibilidad a Enfermedades , Evaluación Preclínica de Medicamentos , Femenino , Humanos , Metástasis de la Neoplasia , Estadificación de Neoplasias , Ftalazinas/farmacología , Piperazinas/farmacología , Inhibidores de Poli(ADP-Ribosa) Polimerasas/farmacología , Transducción de Señal/efectos de los fármacos , Resultado del Tratamiento
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