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1.
Cancer ; 130(14): 2462-2471, 2024 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-38529676

RESUMEN

BACKGROUND: Cervical cancer associated with human papillomavirus has the highest cancer incidence and mortality for women in Botswana because of a high HIV prevalence and limited screening. This study investigates the significance of HIV on the overall survival (OS) of patients with locally advanced cervical cancer by various treatment categories (curative chemoradiation, definitive radiation [RT] alone, or palliative RT alone). METHODS: This study included patients diagnosed with cervical cancer between 2013 and 2020, prospectively enrolled in the Botswana Prospective Cancer Cohort. OS based on HIV status and completion of planned treatment regimen was estimated by the Kaplan-Meier method. Comparisons of 2-year OS by HIV status was performed by the log-rank test, univariate and multivariable Cox analyses adjusting for cancer stage, RT dose, number of chemotherapy cycles, and baseline hemoglobin levels. RESULTS: Of 1131 patients diagnosed with stage IB-IVB cervical cancer, 69.8% were women living with HIV (n = 789). For patients receiving curative chemoradiation, HIV status was not significantly associated with OS in unadjusted (p = .987) and adjusted (p = .578) analyses. For RT only treatment and definitive (high-dose) RT alone, HIV status was significantly associated with OS in unadjusted analysis (HR = 1.77, p = .002; HR = 1.95, p = .014), but not in adjusted analysis (p = .227, p = .73). For patients receiving palliative (low-dose) RT, HIV status was not associated with OS in unadjusted (p = .835) or adjusted analysis (p = .359). CONCLUSIONS: In Botswana, a resource-limited setting, HIV status had no significant effect on 2-year OS in patients with cervical cancer with well-managed HIV receiving chemoradiation, RT alone, or palliative RT. This demonstrates that patients living with HIV receiving antiretroviral treatment can receive clinically appropriate treatment with no evidence that HIV may lead to poorer outcomes.


Asunto(s)
Quimioradioterapia , Infecciones por VIH , Cuidados Paliativos , Neoplasias del Cuello Uterino , Humanos , Femenino , Neoplasias del Cuello Uterino/terapia , Neoplasias del Cuello Uterino/virología , Neoplasias del Cuello Uterino/mortalidad , Neoplasias del Cuello Uterino/patología , Botswana/epidemiología , Persona de Mediana Edad , Adulto , Cuidados Paliativos/métodos , Infecciones por VIH/complicaciones , Estudios Prospectivos , Anciano , Estadificación de Neoplasias
2.
Ann Surg ; 275(2): e463-e472, 2022 02 01.
Artículo en Inglés | MEDLINE | ID: mdl-32541227

RESUMEN

OBJECTIVE: This study aims to present a full spectrum of individual patient presentations of pancreatic fistula risk, and to define the utility of mitigation strategies amongst some of the most prevalent, and vulnerable scenarios surgeons encounter. BACKGROUND: The FRS has been utilized to identify technical strategies associated with reduced CR-POPF incidence across various risk strata. However, risk-stratification using the FRS has never been investigated with greater granularity. By deriving all possible combinations of FRS elements, individualized risk assessment could be utilized for precision medicine purposes. METHODS: FRS profiles and outcomes of 5533 PDs were accrued from 17 international institutions (2003-2019). The FRS was used to derive 80 unique combinations of patient "scenarios." Risk-matched analyses were conducted using a Bonferroni adjustment to identify scenarios with increased vulnerability for CR-POPF occurrence. Subsequently, these scenarios were analyzed using multivariable regression to explore optimal mitigation approaches. RESULTS: The overall CR-POPF rate was 13.6%. All 80 possible scenarios were encountered, with the most frequent being scenario #1 (8.1%) - the only negligible-risk scenario (CR-POPF rate = 0.7%). The moderate-risk zone had the most scenarios (50), patients (N = 3246), CR-POPFs (65.2%), and greatest non-zero discrepancy in CR-POPF rates between scenarios (18-fold). In the risk-matched analysis, 2 scenarios (#59 and 60) displayed increased vulnerability for CR-POPF relative to the moderate-risk zone (both P < 0.001). Multivariable analysis revealed factors associated with CR-POPF in these scenarios: pancreaticogastrostomy reconstruction [odds ratio (OR) 4.67], omission of drain placement (OR 5.51), and prophylactic octreotide (OR 3.09). When comparing the utilization of best practice strategies to patients who did not have these conjointly utilized, there was a significant decrease in CR-POPF (10.7% vs 35.5%, P < 0.001; OR 0.20, 95% confidence interval 0.12-0.33). CONCLUSION: Through this data, a comprehensive fistula risk catalog has been created and the most clinically-impactful scenarios have been discerned. Focusing on individual scenarios provides a practical way to approach precision medicine, allowing for more directed and efficient management of CR-POPF.


Asunto(s)
Fístula Pancreática/epidemiología , Pancreaticoduodenectomía , Complicaciones Posoperatorias/epidemiología , Medicina de Precisión , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo
3.
J Clin Psychol ; 77(9): 1973-1984, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-33625735

RESUMEN

OBJECTIVES: Cognitive processes, such as schema modes and cognitive distortions, may play a role in the genesis and maintenance of affective, interpersonal, and behavioral difficulties in individuals with Borderline Personality Disorder (BPD). This study aimed at exploring the schema modes and cognitive distortions in individuals with BPD. METHODS: Using a mixed-method approach, 30 individuals with BPD and 30 healthy participants were assessed on the Borderline Personality Questionnaire, the Schema Mode Inventory, the Cognitive Distortions Scale, and a semi-structured interview schedule. RESULTS: The BPD group had higher scores than the control group on all the maladaptive schema modes and cognitive distortions subscales. The child modes were the commonest and were also the strongest correlate of BPD symptomatology. Qualitative analysis of the content of the semi-structured interview also corroborated these findings. CONCLUSIONS: There could be many schema modes and cognitive distortions operating behind the diverse psychopathology seen in BPD.


Asunto(s)
Trastorno de Personalidad Limítrofe , Niño , Cognición , Humanos , Proyectos de Investigación , Encuestas y Cuestionarios
4.
Obstet Gynecol ; 141(3): 555-562, 2023 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-36735413

RESUMEN

OBJECTIVE: To compare frequency of perinatal death between pregnant patients who completed the mRNA coronavirus disease 2019 (COVID-19) vaccination series and unvaccinated patients. METHODS: This retrospective cohort study included 15,865 pregnant patients who delivered 16,132 newborns after 20 weeks of gestation within a large regional health system between January 1, 2021, and December 31, 2021. Patients who received two doses of mRNA vaccine (Pfizer-BioNTech [BNT162b2] or Moderna [mRNA-1273]) were included in the vaccinated group and were compared with unvaccinated patients. Exclusions included partial vaccination, viral-vector vaccine, major congenital anomalies, and higher-order multiple gestation. Our primary outcome was perinatal death, including stillbirth and neonatal death, which was evaluated by logistic regression. Unadjusted odds ratios and adjusted odds ratios (aORs) were reported, controlling for age, body mass index (BMI), diabetes, hypertension, smoking, twin gestation, and insurance status. Propensity score matching was also performed. RESULTS: A total of 15,865 patients were included in the final analysis: 2,069 in the vaccination group and 13,796 in the control group. Only 13.0% of the cohort was included in the vaccination group; however, the vaccination rate increased over the course of the study period as the vaccine became more widely available and accepted. Vaccinated patients were older, with higher rates of people of non-Black racial non-Hispanic ethnic backgrounds, people with private insurance, and those with higher BMIs. Vaccination was associated with a lower incidence of perinatal death (0.5% vaccinated group vs 0.8% unvaccinated group, aOR 0.20 0.05-0.88). Vaccination against COVID-19 was also associated with lower rates of preterm delivery (aOR 0.63, 0.48-0.82), neonates with very low birth weight (aOR 0.35, 0.15-0.84), and neonatal intensive care unit (NICU) admission (aOR 0.66, 0.52-0.85). The association between vaccination and lower rates of perinatal death was no longer significant after propensity score matching. CONCLUSION: In a large retrospective cohort study, receipt of the primary mRNA COVID-19 vaccination series was associated with a lower rate of several adverse pregnancy outcomes, including perinatal death, preterm delivery, neonates with very low birth weight, and NICU admission. Although the decreased rates of perinatal death did not remain significant after propensity score matching, there was evidence of directional benefit for vaccinated patients.


Asunto(s)
Vacunas contra la COVID-19 , COVID-19 , Muerte Perinatal , Nacimiento Prematuro , Femenino , Humanos , Recién Nacido , Embarazo , Vacuna BNT162 , COVID-19/epidemiología , COVID-19/prevención & control , COVID-19/complicaciones , Vacunas contra la COVID-19/efectos adversos , Resultado del Embarazo/epidemiología , Nacimiento Prematuro/epidemiología , Nacimiento Prematuro/etiología , Estudios Retrospectivos , Vacunación/efectos adversos
5.
Planta Med ; 78(2): 109-14, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-22083897

RESUMEN

Hot flushes are due to the lack of estrogens and are the most characteristic climacteric complaints. Hormone replacement therapy was the standard treatment but now its use is limited because of side effects. Need therefore arises to search for non-estrogenic alternatives. The molting hormone 20-beta-hydroxyecdysone (Ecd) is produced by several plants including spinach and has no estrogenic or androgenic properties but enhances GABAergic effects in neurons. Since GABAergic compounds can ameliorate hot flushes, we investigated the effects of Ecd on subcutaneous body temperature of intact and ovariectomized (ovx) rats. The subcutaneous body temperature was recorded at 5-min intervals over a period of 3 hours. Rats were then ovx, and skin temperatures were recorded after an acute intravenous (5 mg) and during subchronic and chronic oral application of Ecd (73 mg/animal/day). For additional control purposes, a group of ovx rats received food containing estradiol-17 ß (E2). Skin temperature in individual ovx animals fluctuated largely with peaks (hot flushes) occurring every 20-40 minutes. Following the i.v. treatment with Ecd, skin temperature dropped by more than 1 °C, an effect much larger than in the controls. One and two weeks later, hot flushes were only seen in ovx controls but not in intact, E2-, or Ecd-treated animals. As a consequence, E2 and Ecd intake significantly (p < 0.05) reduced the mean temperature in ovx rats during the various time points of the study. These results suggest that Ecd is efficient to prevent hot flushes in ovx rats.


Asunto(s)
Ecdisona/uso terapéutico , Agonistas del GABA/uso terapéutico , Sofocos/tratamiento farmacológico , Fitoterapia , Extractos Vegetales/uso terapéutico , Temperatura Cutánea/efectos de los fármacos , Spinacia oleracea/química , Animales , Ecdisona/administración & dosificación , Ecdisona/farmacología , Estradiol/farmacología , Femenino , Agonistas del GABA/administración & dosificación , Agonistas del GABA/farmacología , Ovariectomía , Extractos Vegetales/administración & dosificación , Extractos Vegetales/farmacología , Ratas , Ratas Sprague-Dawley
6.
Psychiatry Res ; 267: 414-419, 2018 09.
Artículo en Inglés | MEDLINE | ID: mdl-29960939

RESUMEN

Individuals with Borderline Personality Disorder (BPD) frequently manifest psychotic symptoms. Certain cognitive biases have been implicated in the genesis and maintenance of psychotic symptoms. The present study aimed at exploring whether individuals with BPD manifest these cognitive biases. Twenty-eight individuals with BPD and 28 healthy participants were assessed on four sub-domains of the Davos Assessment of Cognitive Biases Scale, viz. jumping to conclusions, belief inflexibility, attention for threat and external attribution. The BPD group had significantly higher scores on all the four cognitive biases in comparison to the healthy controls. Thus, the findings of the present study indicate that individuals with BPD manifest cognitive biases implicated in psychosis more prominently than healthy individuals. These findings can be used to improve the existing psychotherapeutic techniques for BPD.


Asunto(s)
Atención , Trastorno de Personalidad Limítrofe/psicología , Cognición , Trastornos Psicóticos/psicología , Adulto , Femenino , Humanos , Masculino , Percepción Social , Adulto Joven
7.
J Gastrointest Surg ; 22(1): 88-97, 2018 01.
Artículo en Inglés | MEDLINE | ID: mdl-28875275

RESUMEN

INTRODUCTION: This study aims to understand patients' perspectives and satisfaction with choosing surgery for the treatment of pancreatic cystic lesions (PCLs). METHODS: A 62-question survey was administered to 113 patients who had a resection for a PCL by 12 surgeons at two pancreatic specialty centers (2004-2016). Patients' final diagnoses and perioperative outcomes were correlated to the survey's results using univariate analysis. RESULTS: Fear of cancer was quite or extremely important in most respondents' decision to have surgery (95.4%). Respondents were quite or fully satisfied with the outcomes of surgery (91.1%) and with the decision-making process (89.3%). Distress from anxiety about the cyst before surgery (58.6%) largely outweighed that from postsurgical lifestyle changes (14.4%). Furthermore, 88.7% of patients with pathologically non-malignant disease were quite or fully satisfied with their decision to have surgery, and patients with mucinous neoplasms reported high satisfaction rates independent of grade of dysplasia or malignancy (p = 0.641). CONCLUSION: Patients with a resected PCL are highly satisfied with their decision to have surgery, regardless of the final diagnosis or clinical outcome. Fear of cancer is the main driver in the decision-making process, and the anxiety of harboring a cyst is a greater cause of distress than are postsurgical lifestyle changes.


Asunto(s)
Toma de Decisiones , Quiste Pancreático/cirugía , Neoplasias Pancreáticas/cirugía , Satisfacción del Paciente , Adulto , Anciano , Anciano de 80 o más Años , Ansiedad/etiología , Miedo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pancreatectomía , Quiste Pancreático/patología , Quiste Pancreático/psicología , Neoplasias Pancreáticas/patología , Neoplasias Pancreáticas/psicología , Encuestas y Cuestionarios , Adulto Joven
8.
J Glob Oncol ; 4: 1-11, 2018 09.
Artículo en Inglés | MEDLINE | ID: mdl-30241185

RESUMEN

INTRODUCTION: The number and lifespan of individuals living with HIV have increased significantly with the scale-up of antiretroviral therapy. Furthermore, the incidence of breast cancer in women with HIV is growing, especially in sub-Saharan Africa (SSA). However, the association between HIV infection and breast cancer is not well understood. METHODS: A literature search was performed to identify articles published in journals pertaining to breast cancer and HIV, with an emphasis on SSA. Selected US-based studies were also identified for comparison. RESULTS: Among the 56 studies reviewed, the largest study examined 314 patients with breast cancer and HIV in the United States. There is no consensus on whether HIV infection acts as a pro-oncogenic or antioncogenic factor in breast cancer, and it may have no relation to breast cancer. A higher incidence of breast cancer is reported in high-income countries than in SSA, although breast cancer in SSA presents at a younger age and at a more advanced stage. Some studies show that patients with breast cancer and HIV experience worse chemotherapy toxicity than do patients without HIV. Data on treatment outcomes are limited. The largest study showed worse treatment outcomes in patients with HIV, compared with their counterparts without HIV. CONCLUSION: HIV infection has not been associated with different clinical presentation of breast cancer. However, some evidence suggests that concurrent diagnosis of HIV with breast cancer is associated with increased therapy-related toxicity and worse outcomes. Systematic prospective studies are needed to establish whether there is a specific association between breast cancer and HIV.


Asunto(s)
Neoplasias de la Mama/complicaciones , Neoplasias de la Mama/epidemiología , Infecciones por VIH/complicaciones , Infecciones por VIH/epidemiología , África del Sur del Sahara/epidemiología , Terapia Antirretroviral Altamente Activa , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/terapia , Terapia Combinada , Femenino , Infecciones por VIH/diagnóstico , Infecciones por VIH/tratamiento farmacológico , Humanos , Incidencia , Vigilancia en Salud Pública , Resultado del Tratamiento
9.
Am J Clin Oncol ; 41(9): 845-850, 2018 09.
Artículo en Inglés | MEDLINE | ID: mdl-30134287

RESUMEN

BACKGROUND: Adjuvant radiation therapy improves overall survival in patients with vulvar cancer with 2+ positive lymph nodes, but its benefit remains uncertain for 1 positive lymph node. METHODS: Using the Surveillance, Epidemiology, and End Results (SEER) database, we identified node-positive, American Joint Committee on Cancer version 6-staged women with squamous cell vulvar carcinoma treated with and without radiation following surgery. The Kaplan-Meier approach assessed overall and cause-specific survival. Propensity score-based, multiply imputed Cox modeling accounted for missing data and selection bias. RESULTS: From 2004 to 2013, 488 versus 206 women did and did not receive adjuvant radiation after surgery. Patient characteristics were well balanced, including home county, index tumor diameter, number of nodes excised, provider type, race, and surgery type (P>0.05). Unbalanced covariates-including median age, grade, number of positive nodes, N-stage-were adjusted using Cox regression. At a median follow-up of 36 months, adjuvant radiation was associated with improved median overall survival across all node-positive patients (54 vs. 24 mo; P<0.01). This survival benefit persisted in women with just one (not reached vs. 39 mo; P<0.01) and 2+ (26 vs. 16 mo; P<0.01) positive lymph nodes. Likewise, all node-positive groups saw a cause-specific survival benefit with adjuvant radiation (all P<0.02). On multivariable Cox regression, adjuvant radiation, age, tumor diameter, number of positive nodes, race, and N-stage associated with survival (P<0.05). CONCLUSIONS: All node positive vulvar cancer patients should benefit from and thus should receive adjuvant radiation, including those with one positive node.


Asunto(s)
Carcinoma de Células Escamosas/mortalidad , Ganglios Linfáticos/patología , Radioterapia Adyuvante/mortalidad , Neoplasias de la Vulva/mortalidad , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma de Células Escamosas/patología , Carcinoma de Células Escamosas/radioterapia , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos , Programa de VERF , Tasa de Supervivencia , Neoplasias de la Vulva/patología , Neoplasias de la Vulva/radioterapia , Adulto Joven
10.
Int J Radiat Oncol Biol Phys ; 101(1): 201-210, 2018 05 01.
Artículo en Inglés | MEDLINE | ID: mdl-29619965

RESUMEN

PURPOSE: To prospectively compare survival between human immunodeficiency virus (HIV)-infected versus HIV-uninfected cervical cancer patients who initiated curative chemoradiation therapy (CRT) in a limited-resource setting. METHODS AND MATERIALS: Women with locally advanced cervical cancer with or without HIV infection initiating radical CRT in Botswana were enrolled in a prospective, observational, cohort study from July 2013 through January 2015. RESULTS: Of 182 women treated for cervical cancer during the study period, 143 women initiating curative CRT were included in the study. Eighty-five percent of the participants (122 of 143) had stage II/III cervical cancer, and 67% (96 of 143) were HIV-infected. All HIV-infected patients were receiving antiretroviral therapy (ART) at the time of curative cervical cancer treatment initiation. We found no difference in toxicities between HIV-infected and HIV-uninfected women. The 2-year overall survival (OS) rates were 65% for HIV-infected women (95% confidence interval [CI] 54%-74%) and 66% for HIV-uninfected women (95% CI 49%-79%) (P = .70). Factors associated with better 2-year OS on multivariate analyses included baseline hemoglobin >10 g/dL (hazard ratio [HR] 0.37, 95% CI 0.19-0.72, P = .003), total radiation dose ≥75 Gy (HR 0.52, 95% CI 0.27-0.97, P = .04), and age <40 years versus 40-59 years (HR 2.17, 95% CI 1.05-4.47, P = .03). CONCLUSIONS: Human immunodeficiency virus status had no effect on 2-year OS or on acute toxicities in women with well-managed HIV infection who initiated curative CRT in Botswana. In our cohort, we found that baseline hemoglobin levels, total radiation dose, and age were associated with survival, regardless of HIV status.


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Quimioradioterapia/efectos adversos , Infecciones por VIH/tratamiento farmacológico , Neoplasias del Cuello Uterino/terapia , Adulto , Factores de Edad , Botswana , Quimioradioterapia/mortalidad , Intervalos de Confianza , Femenino , Infecciones por VIH/complicaciones , Infecciones por VIH/mortalidad , Seronegatividad para VIH , Humanos , Estimación de Kaplan-Meier , Persona de Mediana Edad , Análisis Multivariante , Estudios Prospectivos , Dosificación Radioterapéutica , Tasa de Supervivencia , Neoplasias del Cuello Uterino/sangre , Neoplasias del Cuello Uterino/complicaciones , Neoplasias del Cuello Uterino/mortalidad
11.
Semin Radiat Oncol ; 27(2): 136-142, 2017 04.
Artículo en Inglés | MEDLINE | ID: mdl-28325239

RESUMEN

Gynecologic carcinomas, including cervical cancer, present a significant burden on low- and middle-income countries (LMICs). Brachytherapy plays an integral role in the treatment of gynecologic carcinomas, as it is essential for both curative and palliative treatment. However, there are numerous geographic and economic barriers to providing brachytherapy to cancer patients in LMICs. This article examines the role and delivery of brachytherapy in gynecological cancer treatment; brachytherapy capacity in LMICs, including infrastructure, equipment, and human resources considerations; commissioning, training, and clinical implementation of brachytherapy in LMICs; other challenges, and strategies for improvement in brachytherapy delivery in LMICs, including innovation and current and upcoming international initiatives.


Asunto(s)
Braquiterapia , Países en Desarrollo , Neoplasias del Cuello Uterino/radioterapia , Femenino , Neoplasias de los Genitales Femeninos/radioterapia , Humanos
12.
J Glob Oncol ; 3(5): 666-670, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29094103

RESUMEN

PURPOSE: Cervical cancer is a major cause of mortality in low- and middle-income countries (LMICs) and the most common cancer diagnosed in women in Botswana. Most women present with locally advanced disease, requiring chemotherapy and radiation. Care co-ordination requires input from a multidisciplinary team (MDT) to deliver appropriate, timely treatment. However, there are limited published examples of MDT implementation in LMICs. METHODS: In May 2015, a weekly MDT clinic for gynecologic cancer care was initiated at Botswana's national referral facility. The MDT clinic served as a forum for discussion and coordination of patients with gynecologic cancer and consisted of a gynecologist, pathologist, medical oncologist, radiation oncologist, palliative care specialist, and nurse coordinator. RESULTS: Between May 2015 and December 2015, 135 patients were seen in the MDT clinic. The mean age of the patients was 49 years. Most (60%) of the patients were HIV positive. The most common diagnosis was cervical cancer (60%), followed by high-grade cervical intraepithelial neoplastic lesions (12%) and vulvar cancer (11%). Only data up to September 2015 were assessed for treatment delays. It was found that only 38% of patients needed more than one visit for care coordination before treatment initiation. Among patients with cervical cancer, the median delay from date of biopsy to start of radiation treatment was 39 days (interquartile range, 34 to 57 days) for patients treated after MDT initiation, compared with 108 days (interquartile range, 71 to 147 days) for patients treated before MDT initiation (P < .001). CONCLUSION: Implementation of MDT clinics in LMICs is feasible and can help reduce delays in treatment initiation, as demonstrated by a gynecologic MDT clinic in Botswana. Streamlining care through MDT clinics can enhance care coordination and improve clinical outcomes. This model can apply to cancer care in other LMICs.

14.
Semin Radiat Oncol ; 27(2): 158-163, 2017 04.
Artículo en Inglés | MEDLINE | ID: mdl-28325242

RESUMEN

Rising cancer incidence and mortality in India emphasize the need to address the increasing burden of this disease and the stark inequities in access to radiotherapy and other essential medical treatments. State-of-the-art technology is available within the private sector and a few hospitals in the public sector, but 75% of patients in the public sector in India do not have access to timely radiotherapy. This inequity in access to radiotherapy in the public sector is amplified in rural areas, where most of India׳s population lives. A long-term government commitment to machine purchase and human resource development in the public sector is needed to improve access. A number of innovative initiatives to improve cancer treatment and access have emerged that could support such an investment. These include local production of equipment, twinning programs between institutions in high- and low-income countries to exchange knowledge and expertise, and nongovernmental and state-sponsored schemes to sponsor and support patients in their cancer journey. Strengthening of cancer registries and regulatory bodies with authority to enforce minimum standards is also required to improve care. The more uniform and frequent availability of high-quality radiotherapy can improve cancer outcomes and may be regarded as a marker of a comprehensive and equitable system of health care delivery.


Asunto(s)
Accesibilidad a los Servicios de Salud , Neoplasias/radioterapia , Oncología por Radiación , Atención a la Salud , Humanos , India/epidemiología , Neoplasias/epidemiología , Sector Privado , Sector Público , Oncología por Radiación/organización & administración
15.
Transl Oncol ; 9(4): 295-305, 2016 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-27567952

RESUMEN

BACKGROUND: Earlier detection of transformed cells using target-specific imaging techniques holds great promise. We have developed TAB 004, a monoclonal antibody highly specific to a protein sequence accessible in the tumor form of MUC1 (tMUC1). We present data assessing both the specificity and sensitivity of TAB 004 in vitro and in genetically engineered mice in vivo. METHODS: Polyoma Middle T Antigen mice were crossed to the human MUC1.Tg mice to generate MMT mice. In MMT mice, mammary gland hyperplasia is observed between 6 and 10 weeks of age that progresses to ductal carcinoma in situ by 12 to 14 weeks and adenocarcinoma by 18 to 24 weeks. Approximately 40% of these mice develop metastasis to the lung and other organs with a tumor evolution that closely mimics human breast cancer progression. Tumor progression was monitored in MMT mice (from ages 8 to 22 weeks) by in vivo imaging following retro-orbital injections of the TAB 004 conjugated to indocyanine green (TAB-ICG). At euthanasia, mammary gland tumors and normal epithelial tissues were collected for further analyses. RESULTS: In vivo imaging following TAB-ICG injection permitted significantly earlier detection of tumors compared with physical examination. Furthermore, TAB-ICG administration in MMT mice enabled the detection of lung metastases while sparing recognition of normal epithelia. CONCLUSIONS: The data highlight the specificity and the sensitivity of the TAB 004 antibody in differentiating normal versus tumor form of MUC1 and its utility as a targeted imaging agent for early detection, tumor monitoring response, as well as potential clinical use for targeted drug delivery.

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