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1.
Braz. j. biol ; 842024.
Artículo en Inglés | LILACS-Express | LILACS, VETINDEX | ID: biblio-1469311

RESUMEN

Abstract Earias vittellaFabricius, 1794 (Noctuidae: Lepidoptera) is deliberated to be one of the most destructive pests of cotton and okra vegetation in the world including Asia. The pest has established resistance to various synthetic insecticides. The use of bio-pesticide is one of the unconventional approaches to develop a vigorous ecosystem without harming non- target pests and beneficial natural insect fauna. In the present study, the toxicity levels of Citrullus colocynthis seed extract have been evaluated against the populations of E. vittellaunder standardized laboratory conditions. The toxic effects of C. colocynthis on development periods, protein contents and esterase activity of the life stages of E. vittella were also evaluated. The toxicity levels of methanol, ethanol, hexane, water and profenofos were evaluated on the 1st instar larvae of E. vittella. LC30 and LC80 concentrations exhibited the effectiveness of methanol-based C. colocynthis seed extract against 1st instar larvae of E. vitella. The enhanced larval and pupal periods were revealed in treated samples during the comparison with untreated samples. The intrinsic rate of increase, net reproductive rate in the LC30 and LC80 concentrations exposed larvae remained less than the control treatment. Fecundity, the esterase activity and protein contents were declined in LC30 and LC80 treated samples as compared to the control. The present findings suggest that C. colosynthis extracts based botanical insecticides are beneficial, ecosystem sustainable and can be integrated with insect management programs from environment safety perspective.


Resumo Earias vittella Fabricius, 1794 (Noctuidae: Lepidoptera) é considerada uma das pragas mais destrutivas de algodão e quiabo no mundo, incluindo a Ásia. Essa praga estabeleceu resistência a vários inseticidas sintéticos. O uso de biopesticidas é uma das abordagens não convencionais para desenvolver um ecossistema saudável sem prejudicar as pragas não alvo e a fauna natural benéfica de insetos. No presente estudo, os níveis de toxicidade do extrato de semente de Citrullus colocynthis foram avaliados nas populações de E. vittella em condições de laboratório padronizadas. Os efeitos tóxicos de C. colocynthis nos períodos de desenvolvimento, conteúdo de proteína e atividade esterase das fases de vida de E. vittella também foram avaliados. Os níveis de toxicidade de metanol, etanol, hexano, água e profenofós foram avaliados em larvas de 1º instar de E. vittella. As concentrações de LC30 e LC80 apresentaram eficácia do extrato de sementes de C. colocynthis à base de metanol contra larvas de 1º instar de E. vittella. Os períodos larval e pupal aumentados foram revelados nas amostras tratadas durante a comparação com as amostras não tratadas. A taxa intrínseca de aumento e a taxa reprodutiva líquida nas concentrações de larvas expostas LC30 e LC80 permaneceram menores do que o tratamento controle. A fecundidade, a atividade da esterase e o conteúdo de proteína diminuíram nas amostras tratadas com LC30 e LC80 em comparação com o controle. As presentes descobertas sugerem que os extratos de C. colocynthis à base de inseticidas botânicos são benéficos, sustentáveis para o ecossistema e podem ser integrados com programas de manejo de insetos do ponto de vista da segurança ambiental.

2.
Braz. j. biol ; 84: e254479, 2024. tab, graf
Artículo en Inglés | LILACS, VETINDEX | ID: biblio-1355910

RESUMEN

Abstract Earias vittellaFabricius, 1794 (Noctuidae: Lepidoptera) is deliberated to be one of the most destructive pests of cotton and okra vegetation in the world including Asia. The pest has established resistance to various synthetic insecticides. The use of bio-pesticide is one of the unconventional approaches to develop a vigorous ecosystem without harming non- target pests and beneficial natural insect fauna. In the present study, the toxicity levels of Citrullus colocynthis seed extract have been evaluated against the populations of E. vittellaunder standardized laboratory conditions. The toxic effects of C. colocynthis on development periods, protein contents and esterase activity of the life stages of E. vittella were also evaluated. The toxicity levels of methanol, ethanol, hexane, water and profenofos were evaluated on the 1st instar larvae of E. vittella. LC30 and LC80 concentrations exhibited the effectiveness of methanol-based C. colocynthis seed extract against 1st instar larvae of E. vitella. The enhanced larval and pupal periods were revealed in treated samples during the comparison with untreated samples. The intrinsic rate of increase, net reproductive rate in the LC30 and LC80 concentrations exposed larvae remained less than the control treatment. Fecundity, the esterase activity and protein contents were declined in LC30 and LC80 treated samples as compared to the control. The present findings suggest that C. colosynthis extracts based botanical insecticides are beneficial, ecosystem sustainable and can be integrated with insect management programs from environment safety perspective.


Resumo Earias vittella Fabricius, 1794 (Noctuidae: Lepidoptera) é considerada uma das pragas mais destrutivas de algodão e quiabo no mundo, incluindo a Ásia. Essa praga estabeleceu resistência a vários inseticidas sintéticos. O uso de biopesticidas é uma das abordagens não convencionais para desenvolver um ecossistema saudável sem prejudicar as pragas não alvo e a fauna natural benéfica de insetos. No presente estudo, os níveis de toxicidade do extrato de semente de Citrullus colocynthis foram avaliados nas populações de E. vittella em condições de laboratório padronizadas. Os efeitos tóxicos de C. colocynthis nos períodos de desenvolvimento, conteúdo de proteína e atividade esterase das fases de vida de E. vittella também foram avaliados. Os níveis de toxicidade de metanol, etanol, hexano, água e profenofós foram avaliados em larvas de 1º instar de E. vittella. As concentrações de LC30 e LC80 apresentaram eficácia do extrato de sementes de C. colocynthis à base de metanol contra larvas de 1º instar de E. vittella. Os períodos larval e pupal aumentados foram revelados nas amostras tratadas durante a comparação com as amostras não tratadas. A taxa intrínseca de aumento e a taxa reprodutiva líquida nas concentrações de larvas expostas LC30 e LC80 permaneceram menores do que o tratamento controle. A fecundidade, a atividade da esterase e o conteúdo de proteína diminuíram nas amostras tratadas com LC30 e LC80 em comparação com o controle. As presentes descobertas sugerem que os extratos de C. colocynthis à base de inseticidas botânicos são benéficos, sustentáveis ​​para o ecossistema e podem ser integrados com programas de manejo de insetos do ponto de vista da segurança ambiental.


Asunto(s)
Animales , Citrullus colocynthis , Insecticidas , Mariposas Nocturnas , Extractos Vegetales/farmacología , Ecosistema , Larva
3.
Braz J Biol ; 84: e254479, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35019105

RESUMEN

Earias vittellaFabricius, 1794 (Noctuidae: Lepidoptera) is deliberated to be one of the most destructive pests of cotton and okra vegetation in the world including Asia. The pest has established resistance to various synthetic insecticides. The use of bio-pesticide is one of the unconventional approaches to develop a vigorous ecosystem without harming non- target pests and beneficial natural insect fauna. In the present study, the toxicity levels of Citrullus colocynthis seed extract have been evaluated against the populations of E. vittellaunder standardized laboratory conditions. The toxic effects of C. colocynthis on development periods, protein contents and esterase activity of the life stages of E. vittella were also evaluated. The toxicity levels of methanol, ethanol, hexane, water and profenofos were evaluated on the 1st instar larvae of E. vittella. LC30 and LC80 concentrations exhibited the effectiveness of methanol-based C. colocynthis seed extract against 1st instar larvae of E. vitella. The enhanced larval and pupal periods were revealed in treated samples during the comparison with untreated samples. The intrinsic rate of increase, net reproductive rate in the LC30 and LC80 concentrations exposed larvae remained less than the control treatment. Fecundity, the esterase activity and protein contents were declined in LC30 and LC80 treated samples as compared to the control. The present findings suggest that C. colosynthis extracts based botanical insecticides are beneficial, ecosystem sustainable and can be integrated with insect management programs from environment safety perspective.


Asunto(s)
Citrullus colocynthis , Insecticidas , Mariposas Nocturnas , Animales , Ecosistema , Larva , Extractos Vegetales/farmacología
4.
Eur Arch Paediatr Dent ; 22(4): 667-674, 2021 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-33566287

RESUMEN

PURPOSE: With the advancements in technology, dental pedagogy has also evolved, and new learning technologies have emerged. Virtual reality (VR) as an education tool in dentistry is underutilised. VR as an adjunct in local anaesthesia (LA) teaching in paediatric dentistry has not been investigated. The study aimed to investigate dental student's perception of dental LA VR simulation on a paediatric patient and to determine whether this can improve students learning experience. METHODS: Seventy-one students participated in a self-administered questionnaire before and after the use of dental LA VR simulator. Descriptive analysis was performed to determine the perceptions of experience gained through VR. The data were tabulated, graphed, and analysed using SPSS and GraphPad Prism software. RESULTS: The study noted that 89.9% of participants perceived that it would improve their LA skills. After using dental LA VR, 83.1% of participants experienced more engaged in the learning activity, and 55.0% of participants agreed/strongly agreed that it improved their understanding of anatomical landmarks. Around 56.4% of participants agreed/strongly agreed that it added value compared with traditional LA teaching methods. CONCLUSION: It can be concluded that the use of VR simulation can enhance students engagement and learning experience in paediatric dentistry settings and can be used as an additional means of LA training.


Asunto(s)
Realidad Virtual , Anestesia Local , Anestésicos Locales , Niño , Competencia Clínica , Educación en Odontología , Humanos , Odontología Pediátrica
5.
Front Psychol ; 12: 769407, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-35222142

RESUMEN

Cancer and its treatment pose challenges that affect not only patients but also their significant others, including intimate partners. Accumulating evidence suggests that couples' ability to communicate effectively plays a major role in the psychological adjustment of both individuals and the quality of their relationship. Two key conceptual models have been proposed to account for how couple communication impacts psychological and relationship adjustment: the social-cognitive processing (SCP) model and the relationship intimacy (RI) model. These models posit different mechanisms and outcomes, and thus have different implications for intervention. The purpose of this project is to test and compare the utility of these models using comprehensive and methodologically rigorous methods. Aims are: (1) to examine the overall fit of the SCP and RI models in explaining patient and partner psychological and relationship adjustment as they occur on a day-to-day basis and over the course of 1 year; (2) to examine the fit of the models for different subgroups (males vs. females, and patients vs. partners); and (3) to examine the utility of various methods of assessing communication by examining the degree to which baseline indices from different measurement strategies predict self-reported adjustment at 1-year follow up. The study employs a longitudinal, multi-method approach to examining communication processes including: standard self-report questionnaires assessing process and outcome variables collected quarterly over the course of 1 year; smartphone-based ecological momentary assessments to sample participant reports in real time; and laboratory-based couple conversations from which we derive observational measures of communicative behavior and affective expression, as well as vocal indices of emotional arousal. Participants are patients with stage II-IV breast, colon, rectal, or lung cancer and their spouses/partners, recruited from two NCI-designated comprehensive cancer centers. Results will be published in scientific journals, presented at scientific conferences, and conveyed to a larger audience through infographics and social media outlets. Findings will inform theory, measurement, and the design and implementation of efficacious interventions aimed at optimizing both patient and partner well-being.

6.
J Glob Oncol ; 2(6): 381-386, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-28717724

RESUMEN

PURPOSE: Global cancer burden has increasingly shifted to low- and middle-income countries and is particularly pronounced in Africa. There remains a lack of comprehensive cancer information as a result of limited cancer registry development. In Moshi, Tanzania, a regional cancer registry exists at Kilimanjaro Christian Medical Center. Data quality is unknown. Our objective was to evaluate the completeness and quality of the Kilimanjaro Cancer Registry (KCR). METHODS: In October 2015, we conducted a retrospective review of KCR by validating the internal consistency of registry records with medical and pathology records. We randomly sampled approximately 100 total registry cases. Four reviewers not associated with the KCR manually collected data elements from medical records and compared them with KCR data. RESULTS: All 100 reviewed registry cases had complete cancer site and morphology included in the registry. Six had a recorded stage. For the majority (n = 92), the basis of diagnosis was pathology. Pathology reports were found in the medical record for 40% of patients; for the remainder, these were stored separately in the pathology department. Of sampled registry cases, the KCR and medical records were 98% and 94% concordant for primary cancer site and morphology, respectively. For 28%, recorded diagnosis dates were within 14 days of what was found in the medical record, and for 32%, they were within 30 days. CONCLUSION: The KCR has a high level of concordance for classification and coding when data are retrieved for validation. This parameter is one of the most important for measuring data quality in a regional cancer registry.

7.
J Oncol Pract ; 11(2): 145-50, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25515717

RESUMEN

PURPOSE: The impact of financial burden among patients with cancer has not yet been measured in a way that accounts for inter-relationships between quality of life, perceived quality of care, disease status, and sociodemographic characteristics. PATIENTS AND METHODS: In a national, prospective, observational, population- and health care systems-based cohort study, patients with colorectal or lung cancer were enrolled from 2003 to 2006 within 3 months of diagnosis. For this analysis, surviving patients who were either disease free or had advanced disease were resurveyed a median 7.3 years from diagnosis. Structural equation modeling was used to investigate relationships between financial burden, quality of life, perceived quality of care, and sociodemographic characteristics. RESULTS: Among 1,000 participants enrolled from five geographic regions, five integrated health care systems, or 15 Veterans Administration Hospitals, 89% (n = 889) were cancer free, and 11% (n = 111) had advanced cancer. Overall, 48% (n = 482) reported difficulties living on their household income, and 41% (n = 396) believed their health care to be "excellent." High financial burden was associated with lower household income (adjusted odds ratio [OR] = 0.61 per $20k per year, P < .001) and younger age (adjusted OR = 0.63 per 10 years; P < .001). High financial burden was also associated with poorer quality of life (adjusted beta = -0.06 per burden category; P < .001). Better quality of life was associated with fewer perceptions of poorer quality of care (adjusted OR = 0.85 per 0.10 EuroQol units; P < .001). CONCLUSION: Financial burden is prevalent among cancer survivors and is related to patients' health-related quality of life. Future studies should consider interventions to improve patient education and engagement with regard to financial burden.


Asunto(s)
Neoplasias Colorrectales/economía , Neoplasias Colorrectales/psicología , Costo de Enfermedad , Neoplasias Pulmonares/economía , Neoplasias Pulmonares/psicología , Calidad de Vida , Anciano , Anciano de 80 o más Años , Neoplasias Colorrectales/epidemiología , Femenino , Humanos , Neoplasias Pulmonares/epidemiología , Masculino , Persona de Mediana Edad , Percepción , Estudios Prospectivos , Calidad de la Atención de Salud , Índice de Severidad de la Enfermedad , Sobrevivientes
8.
BMC Health Serv Res ; 14: 315, 2014 Jul 19.
Artículo en Inglés | MEDLINE | ID: mdl-25038783

RESUMEN

BACKGROUND: Concerns about unsustainable costs in the US Medicare program loom as the number of retirees increase and experiences serious and costly illnesses like cancer. Engagement of stakeholders, particularly cancer patients and their families, in prioritizing insured services offers a valuable strategy for informing Medicare coverage policy. We designed and evaluated a decision exercise that allowed cancer patients and family members to choose Medicare benefits for advanced cancer patients. METHODS: The decision tool, Choosing Health plans All Together (CHAT) was modified to select services for advanced cancer patients. Patients with a cancer history (N = 246) and their family members (N = 194) from North Carolina participated in 70 CHAT sessions. Variables including participants' socio-demographic characteristics, health status, assessments of the exercise and results of group benefit selections were collected. Routine descriptive statistics summarized participant characteristics and Fisher's exact test compared group differences. Qualitative analysis of group discussions were used to ascertain reasons for or against selecting benefits. RESULTS: Patients and family members (N = 440) participated in 70 CHAT exercises. Many groups opted for such services as palliative care, nursing facilities, and services not currently covered by the Medicare program. In choosing among four levels of cancer treatment coverage, no groups chose basic coverage, 27 groups (39%) selected intermediate coverage, 39 groups (56%) selected high coverage, and 4 groups (6%) chose the most comprehensive cancer coverage. Reasons for or against benefit selection included fairness, necessity, need for prioritizing, personal experience, attention to family needs, holistic health outlook, preference for comfort, freedom of choice, and beliefs about the proper role of government. Participants found the exercise very easy (59%) or fairly easy (39%) to understand and very informative (66%) or fairly informative (31%). The majority agreed that the CHAT exercise led to fair decisions about priorities for coverage by which they could abide. CONCLUSIONS: It is possible to involve cancer patients and families in explicit discussions of their priorities for affordable advanced cancer care through the use of decision tools designed for this purpose. A key question is whether such a conversation is possible on a broader, national level.


Asunto(s)
Conducta de Elección , Técnicas de Apoyo para la Decisión , Familia/psicología , Medicare , Neoplasias/psicología , Neoplasias/terapia , Demografía , Femenino , Prioridades en Salud , Necesidades y Demandas de Servicios de Salud , Humanos , Beneficios del Seguro , Masculino , North Carolina , Estados Unidos
9.
Infect Agent Cancer ; 9: 17, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24904686

RESUMEN

BACKGROUND: In low- and middle-income countries, the association between delay to treatment and prognosis for Kaposi's sarcoma (KS) patients is yet to be studied. METHODS: This is a prospective study of HIV-infected adults with histologically-confirmed KS treated at the Uganda Cancer Institute (UCI). Standardized interviews were conducted in English or Luganda. Medical records were abstracted for KS stage at admission to UCI. Multivariable logistic regression assessed relationships between diagnostic delay and stage at diagnosis. RESULTS: Of 161 patients (90% response rate), 69% were men, and the mean age was 34.0 years (SD 7.7). 26% had been seen in an HIV clinic within 3 months, 72% were on antiretroviral therapy, and 26% had visited a traditional healer prior to diagnosis. 45% delayed seeking care at UCI for ≥3 months from symptom onset. Among those who delayed, 36% waited 6 months, and 25% waited 12 months. Common reasons for delay were lack of pain (48%), no money (32%), and distance to UCI (8%). In adjusted analysis patients who experienced diagnostic delay were more likely than those who did not delay to have poor-risk KS stage (OR 3.41, p = 0.002, 95% CI: 1.46-7.45). In adjusted analyses visiting a traditional healer was the only variable associated with greater likelihood of delay (OR 2.69, p = 0.020, 95% CI: 1.17-6.17). CONCLUSIONS: Diagnostic delay was associated with poor-risk stage at diagnosis, and visiting a traditional healer was associated with higher odds of delay. The relationship between traditional and Western medicine presents a critical intervention point to improve KS-related outcomes in Uganda.

10.
J Clin Oncol ; 32(8): 809-15, 2014 Mar 10.
Artículo en Inglés | MEDLINE | ID: mdl-24493712

RESUMEN

PURPOSE: High-quality supportive care is an essential component of comprehensive cancer care. We implemented a patient-centered quality of cancer care survey to examine and identify predictors of quality of supportive care for bowel problems, pain, fatigue, depression, and other symptoms among 1,109 patients with colorectal cancer. PATIENTS AND METHODS: Patients with new diagnosis of colorectal cancer at any Veterans Health Administration medical center nationwide in 2008 were ascertained through the Veterans Affairs Central Cancer Registry and sent questionnaires assessing a variety of aspects of patient-centered cancer care. We received questionnaires from 63% of eligible patients (N = 1,109). Descriptive analyses characterizing patient experiences with supportive care and binary logistic regression models were used to examine predictors of receipt of help wanted for each of the five symptom categories. RESULTS: There were significant gaps in patient-centered quality of supportive care, beginning with symptom assessment. In multivariable modeling, the impact of clinical factors and patient race on odds of receiving wanted help varied by symptom. Coordination of care quality predicted receipt of wanted help for all symptoms, independent of patient demographic or clinical characteristics. CONCLUSION: This study revealed substantial gaps in patient-centered quality of care, difficult to characterize through quality measurement relying on medical record review alone. It established the feasibility of collecting patient-reported quality measures. Improving quality measurement of supportive care and implementing patient-reported outcomes in quality-measurement systems are high priorities for improving the processes and outcomes of care for patients with cancer.


Asunto(s)
Neoplasias Colorrectales/terapia , Atención Integral de Salud/normas , Hospitales de Veteranos , Oncología Médica/normas , Satisfacción del Paciente , Calidad de la Atención de Salud/normas , United States Department of Veterans Affairs , Anciano , Anciano de 80 o más Años , Neoplasias Colorrectales/diagnóstico , Neoplasias Colorrectales/etnología , Neoplasias Colorrectales/psicología , Estudios Transversales , Prestación Integrada de Atención de Salud/normas , Femenino , Accesibilidad a los Servicios de Salud/normas , Encuestas Epidemiológicas , Humanos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Oportunidad Relativa , Atención Dirigida al Paciente/normas , Calidad de Vida , Sistema de Registros , Encuestas y Cuestionarios , Resultado del Tratamiento , Estados Unidos
11.
Curr Opin Support Palliat Care ; 6(1): 69-76, 2012 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-22228030

RESUMEN

PURPOSE OF REVIEW: This review summarizes recent developments in the management of gastrointestinal symptoms experienced by cancer patients and provides a framework for education, assessment and monitoring, and treatment. RECENT FINDINGS: Although many viable treatment options exist, gastrointestinal symptoms - particularly nausea and vomiting, constipation, and diarrhea - continue to challenge both patients and clinicians. Current clinical guidelines now recommend that patients treated with moderate emetic risk chemotherapy regimens be preferentially treated with the 5-hydroxytryptamine type 3 (5-HT3) receptor antagonist, palonosetron, in combination with dexamethasone. A large randomized trial has also recently validated that single-dose fosaprepitant is equivalent to the standard 3-day, aprepitant regimen. New medications, such as skin patch delivery of granisetron for nausea or methylnaltrexone for constipation, show promise in both the management of symptoms and as preventive agents. The integration of complementary and alternative therapies, such as relaxation techniques, ginger, and electroacupuncture may also assist with symptom relief. Accurate assessment is essential, but often problematic, especially as the patient's experience of gastrointestinal distress is often disproportionate with objective measures. New methodologies that harness technology to collect patient-reported outcomes may improve the accuracy of assessment, provide a better picture of the patient's experience of gastrointestinal symptoms, and deliver a means to simultaneously monitor symptoms, educate patients, and collect longitudinal data. SUMMARY: Palliative management of gastrointestinal symptoms in advanced cancer patients requires a multipronged approach that entails effective assessment, judicious use of latest evidence-based approaches, and monitoring that incorporates both clinical measures and patient-reported outcomes. When combined with refinements in the overall clinical approach to symptom management, standardized instruments that streamline data collection and enable data warehousing will support better symptom management.


Asunto(s)
Enfermedades Gastrointestinales/etiología , Neoplasias/complicaciones , Vómitos/etiología , Antieméticos/uso terapéutico , Antineoplásicos/efectos adversos , Dexametasona/uso terapéutico , Enfermedades Gastrointestinales/tratamiento farmacológico , Enfermedades Gastrointestinales/patología , Zingiber officinale , Granisetrón/uso terapéutico , Humanos , Isoquinolinas/uso terapéutico , Náusea/tratamiento farmacológico , Náusea/etiología , Náusea/patología , Neoplasias/patología , Cuidados Paliativos , Palonosetrón , Quinuclidinas/uso terapéutico , Antagonistas de la Serotonina/uso terapéutico , Resultado del Tratamiento , Vómitos/tratamiento farmacológico , Vómitos/patología
12.
Cancer Chemother Pharmacol ; 67(2): 465-74, 2011 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-21079958

RESUMEN

PURPOSE: VEGF, mTOR, and EGFR inhibitors have demonstrated anti-tumor and anti-angiogenic effects alone and in combination with each other. This study evaluated the safety, tolerability, and pharmacokinetics of bevacizumab, everolimus, and erlotinib combination. METHODS: Doublet therapy consisted of bevacizumab at 10 mg/kg every 14 days and everolimus 5 mg daily which escalated to 10 mg daily. Erlotinib 75 mg daily was added to the phase II dose recommended phase II dose (RPTD) of bevacizumab and everolimus. Dose-limiting toxicity (DLT) was assessed in cycle 1. RESULTS: Forty-eight patients with advanced solid malignancies were evaluable for DLT and efficacy. No DLTs were observed in the doublet dose escalation. Two DLTs (grade 3 mucositis and grade 3 rash) were observed with the addition of erlotinib 75 mg daily. Consequently, triplet doses were adjusted and were better tolerated. Four patients had a partial response. Median progression-free survival (PFS) for the doublet therapy was 6.0 months (0.5 to 32+ months) and 5.5 months (0.8 to 27+ months) for the triplet therapy. Systemic exposure of everolimus was significantly higher in combination with erlotinib (476 ± 161 ng h/mL) compared to when given alone (393 ± 156 ng h/mL; P = 0.020). CONCLUSIONS: The RPTD for the doublet therapy is bevacizumab 10 mg/kg every 14 days and everolimus 10 mg daily, and the RPTD for the triplet therapy is bevacizumab 5 mg/kg every 14 days, everolimus 5 mg and erlotinib 75 mg daily. Prolonged disease stability was demonstrated in tumors known to respond to mTOR inhibition and potentially resistant to VEGF blockade.


Asunto(s)
Anticuerpos Monoclonales/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias/tratamiento farmacológico , Neoplasias/patología , Quinazolinas/administración & dosificación , Sirolimus/análogos & derivados , Adulto , Anciano , Inhibidores de la Angiogénesis/administración & dosificación , Inhibidores de la Angiogénesis/uso terapéutico , Anticuerpos Monoclonales/farmacocinética , Anticuerpos Monoclonales Humanizados , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/farmacocinética , Bevacizumab , Supervivencia sin Enfermedad , Clorhidrato de Erlotinib , Everolimus , Femenino , Humanos , Masculino , Dosis Máxima Tolerada , Persona de Mediana Edad , Inhibidores de Proteínas Quinasas/administración & dosificación , Inhibidores de Proteínas Quinasas/farmacocinética , Inhibidores de Proteínas Quinasas/uso terapéutico , Quinazolinas/farmacocinética , Sirolimus/administración & dosificación , Sirolimus/farmacocinética , Resultado del Tratamiento
13.
J Clin Oncol ; 28(19): 3176-81, 2010 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-20516431

RESUMEN

PURPOSE: The Veterans Affairs (VA) healthcare system treats approximately 3% of patients with cancer in the United States each year. We measured the quality of nonmetastatic colorectal cancer (CRC) care in VA as indicated by concordance with National Comprehensive Cancer Network practice guidelines (six indicators) and timeliness of care (three indicators). PATIENTS AND METHODS: A retrospective medical record abstraction was done for 2,492 patients with incident stages I to III CRC diagnosed between October 1, 2003, and March 31, 2006, who underwent definitive CRC surgery. Patients were treated at one or more of 128 VA medical centers. The proportion of patients receiving guideline-concordant care and time intervals between care processes were calculated. RESULTS: More than 80% of patients had preoperative carcinoembryonic antigen determination (ie, stages II to III disease) and documented clear surgical margins (ie, stages II to III disease). Between 72% and 80% of patients had appropriate referral to a medical oncologist (ie, stages II to III disease), preoperative computed tomography scan of the abdomen and pelvis (ie, stages II to III disease), and adjuvant fluorouracil-based chemotherapy (ie, stage III disease). Less than half of patients with stages I to III CRC (43.5%) had a follow-up colonoscopy 7 to 18 months after surgery. The mean number of days between major treatment events included the following: 26.6 days (standard deviation [SD], 38.2; median, 20 days) between diagnosis and initiation of treatment (in stages II to III disease); 64.8 [corrected] days (SD, 54.9; median, 50 days) between definitive surgery and start of adjuvant chemotherapy (in stages II to III disease); and 444.2 [corrected] days (SD, 182.1; median, 393 days) between definitive surgery and follow-up colonoscopies (in stages I to III disease). CONCLUSION: Although there is opportunity for improvement in the area of cancer surveillance, the VA performs well in meeting established guidelines for diagnosis and treatment of CRC.


Asunto(s)
Neoplasias Colorrectales/terapia , Hospitales de Veteranos/normas , Garantía de la Calidad de Atención de Salud , Veteranos/estadística & datos numéricos , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias Colorrectales/patología , Femenino , Hospitales de Veteranos/estadística & datos numéricos , Humanos , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Estudios Retrospectivos , Estados Unidos , United States Department of Veterans Affairs
14.
Curr Opin Support Palliat Care ; 3(1): 41-9, 2009 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-19365160

RESUMEN

PURPOSE OF REVIEW: This review summarizes recent developments in the palliative management of gastrointestinal symptoms experienced by advanced cancer patients and provides a framework for detailing that encompasses education, assessment and monitoring, and treatment. RECENT FINDINGS: Although many viable treatment options exist, gastrointestinal symptoms, particularly nausea and vomiting, constipation, and diarrhea, continue to challenge both patients and clinicians. New medications, such as skin patch delivery of granisetron for nausea or methylnaltrexone for constipation, show promise of better symptom management, and are advancing alongside an increasing emphasis on prevention. The integration into care plans of complementary and alternative therapies, such as relaxation techniques and electroacupuncture, may also assist with symptom relief. Accurate assessment is essential but often problematic, especially as the patient's experience of gastrointestinal distress is often incommensurate with objective measures. New methodologies that harness technology to collect patient-reported outcomes may improve the accuracy of assessment, better capture the patient's experience of gastrointestinal symptoms, and provide a means to simultaneously monitor symptoms, educate patients, and collect longitudinal data. SUMMARY: Palliative management of gastrointestinal symptoms in advanced cancer patients requires a multipronged approach that entails effective assessment, judicious use of latest evidence-based approaches, and monitoring that incorporates both clinical measures and patient-reported outcomes. In combination with refinements in the overall clinical approach to symptom management, the deployment of standardized instruments that streamline data collection and enable data warehousing will support better symptom management.


Asunto(s)
Enfermedades Gastrointestinales/diagnóstico , Neoplasias/complicaciones , Índice de Severidad de la Enfermedad , Estreñimiento/diagnóstico , Estreñimiento/tratamiento farmacológico , Estreñimiento/etiología , Diarrea/diagnóstico , Diarrea/tratamiento farmacológico , Diarrea/etiología , Enfermedades Gastrointestinales/tratamiento farmacológico , Enfermedades Gastrointestinales/etiología , Humanos , Náusea/diagnóstico , Náusea/tratamiento farmacológico , Náusea/etiología
15.
Support Care Cancer ; 17(6): 735-44, 2009 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-19096882

RESUMEN

GOALS: Management of the risk of potential chemotherapy-induced neutropenic complications such as febrile neutropenia (FN) and severe neutropenia (SN) is a quality of care priority. How frequently does care at our institution conform to established guidelines? MATERIALS AND METHODS: This retrospective chart review study included a random sample of 305 cancer patients receiving care at a single US academic medical center. Abstracted data included demographics, risk factors, and outcome variables (e.g., development of FN/SN, administration of myeloid growth factors). To evaluate quality of care, we assessed conformance between actual practice and established clinical practice guidelines for the use of myeloid growth factors from the National Comprehensive Cancer Network (NCCN). MAIN RESULTS: Of the 305 cases reviewed, 8% were classified as low risk (<10%), 48% as intermediate risk (10-20%), and 44% as high risk (>20%), using the risk classifications in the NCCN guidelines modified to accommodate illness and other risk factors. Thirty-four percent received prophylactic administration of myeloid growth factors. Half of the cases had adequate documentation of mid-cycle absolute neutrophil count to determine whether FN/SN developed. Among these cases with adequate documentation, 21% developed FN/SN. Use of growth factors did not conform to established quality guidelines. Overall, 77 of 133 (58%) high-risk cases received myeloid growth factors, whereas six of 25 (24%) low-risk cases received myeloid growth factors. CONCLUSIONS: Routine clinical practice in this academic oncology setting was poorly aligned with established guidelines; there is substantial opportunity to standardize clinical strategies and increase conformance with evidence-based guidelines.


Asunto(s)
Antineoplásicos/efectos adversos , Factores Estimulantes de Colonias/uso terapéutico , Neutropenia/prevención & control , Calidad de la Atención de Salud , Centros Médicos Académicos , Adulto , Anciano , Anciano de 80 o más Años , Antineoplásicos/uso terapéutico , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias/tratamiento farmacológico , Neutropenia/inducido químicamente , Guías de Práctica Clínica como Asunto , Estudios Retrospectivos , Factores de Riesgo , Estados Unidos/epidemiología , Adulto Joven
17.
Life Sci ; 75(20): 2377-89, 2004 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-15350815

RESUMEN

In this investigation, we report the presence of cholinomimetic and acetylcholinesterase (AChE) inhibitory constituents in betel nut, the most commonly used drug in the world after tobacco, ethanol and caffeine. The crude extract of betel nuts or Areca catechu (Ac.Cr) caused a dose-dependent (0.3-300 microg/mL) spasmogenic effect in the isolated rabbit jejunum. The spasmogenic effect was blocked by atropine, similar to that of acetylcholine (ACh), suggestive of muscarinic receptor mediated effect. Both the extract (0.3-10 microg/mL) and physostigmine (0.1-3.0 microM) potentiated the effect of a fixed dose of ACh (10 microM) in a dose-dependent fashion, suggesting acetylcholinesterase (AChE) inhibitory effect. This effect was confirmed in the in vitro assay where both the crude extract (1-100 microg/mL) and physostigmine inhibited the enzyme. In the in vivo model of gastrointestinal transit, Ac.Cr (10-30 mg/kg) enhanced the travel of charcoal meal and also exhibited a laxative effect in mice. The plant extract was subjected to activity-directed fractionation and all resultant fractions showed atropine-sensitive spasmogenicity in rabbit jejunum and also AChE inhibitory effect at doses similar to that for the parent crude extract, the ethyl acetate fraction being slightly less potent. Some of the known constituents of betel nut, including arecoline, were tested for the possible inhibitory effect on AChE, none were found active. The study provides first evidence for the presence of AChE inhibitory constituents in betel nut, though additional direct muscarinic stimulatory effect cannot be ruled out and this study provides sound scientific basis for some of the folkloric uses associated with betel nut chewing.


Asunto(s)
Acetilcolinesterasa/metabolismo , Areca/química , Agonistas Colinérgicos/farmacología , Inhibidores de la Colinesterasa/farmacología , Yeyuno/efectos de los fármacos , Extractos Vegetales/farmacología , Acetilcolina/farmacología , Animales , Atropina/farmacología , Relación Dosis-Respuesta a Droga , Femenino , Yeyuno/enzimología , Masculino , Ratones , Ratones Endogámicos BALB C , Antagonistas Muscarínicos/farmacología , Fisostigmina/farmacología , Conejos , Receptores Muscarínicos/efectos de los fármacos , Vasodilatadores/farmacología
19.
J Ethnopharmacol ; 83(1-2): 13-7, 2002 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-12413702

RESUMEN

Qatoor Ramad (QR) is an ophthalmic formulation of Unani medicine. It is reputed for its beneficial effects in the treatment of the inflammatory conditions of the eyes. The effect of QR eye drops was studied by a double-blind, randomized, prospective, placebo-controlled clinical trial, conducted in 70 patients (20-60 yrs) suffering from different types of conjunctivitis, namely mucopurulent, phlyctenular and allergic conjunctivitis. Local application of two drops (3-4 times/day) of QR was applied to the affected eyes for up to 14 days. Patients were examined at the time of diagnosis and after 2, 7 and 14 days. Clinical efficacy was measured as the cumulative sum score of several signs and symptoms of different types of conjunctivitis. Side effects, if any, were also noted during the study. In mucopurulent conjunctivitis QR showed excellent results. In the few cases of phlyctenular and allergic conjunctivitis it controlled the deterioration and seems to help in improvement. There were no side effects observed during the course of the study and the eye drop was well tolerated by the patients. It is considered to be a useful drug in all conditions studied.


Asunto(s)
Conjuntivitis/tratamiento farmacológico , Soluciones Oftálmicas/uso terapéutico , Fitoterapia , Extractos Vegetales/uso terapéutico , Plantas Medicinales , Adulto , Conjuntivitis/patología , Método Doble Ciego , Femenino , Humanos , Masculino , Persona de Mediana Edad , Soluciones Oftálmicas/administración & dosificación , Extractos Vegetales/administración & dosificación , Estudios Prospectivos , Resultado del Tratamiento
20.
J Ethnopharmacol ; 78(1): 95-8, 2001 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-11585695

RESUMEN

Chronic treatment with Delphinium denudatum (Dd) (Jadwar) (family: Ranunculaceae, 200-1600 mg/kg) suppressed morphine withdrawal jumps in a dose-dependent manner, a sign of the development of dependence to opiate as assessed by naloxone (2 mg/kg) precipitation withdrawal on day 10 of testing in mice. Repeated administration of Dd (200-1600 mg/kg) for 9 days attenuated the development of tolerance to the analgesic effect of morphine (10 mg/kg), also produces significant change in tail-flick latency from the saline pretreated group in a dose-dependent manner.


Asunto(s)
Dependencia de Morfina/tratamiento farmacológico , Fitoterapia , Extractos Vegetales/uso terapéutico , Ranunculaceae/química , Animales , Conducta Animal/efectos de los fármacos , Tolerancia a Medicamentos , Femenino , Masculino , Ratones , Naloxona/farmacología , Antagonistas de Narcóticos/farmacología , Extractos Vegetales/farmacología , Raíces de Plantas/química
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