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1.
Environ Health Insights ; 18: 11786302241257819, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38863689

RESUMEN

Background: The usage of solid cooking fuels is widely prevalent in low and middle-income countries, including India, and contributes to indoor air pollution (IAP), which has detrimental health effects. Moreover, time spent inside the house increases as people age. In this context, the present study tried to understand the association between exposure to indoor air pollution and unhealthy symptoms, including shortness of breath, dizziness, headache, fatigue, wheezing, and cough among middle-aged and older adults in India. Methods: We extracted the unit-level individual data (N = 63 790) from the Longitudinal Aging Study in India (LASI)-Wave 1 (2017-2018). The statistical analyses used were Chi-square test and binary logistic regression, which estimated the odds ratio to identify the determinants of the unhealthy symptoms. Results: The odds of shortness of breath (adjusted OR: 1.14, 99% CI: 1.05-1.23), dizziness (adjusted OR: 1.28, 99% CI: 1.21-1.35), fatigue (adjusted OR: 1.32, 99% CI: 1.26-1.39), wheezing (adjusted OR: 1.30, 99% CI: 1.19-1.42), and cough (adjusted OR: 1.36, 99% CI: 1.27-1.45) were higher among individuals from households where solid cooking fuels was used. Similarly, the odds of shortness of breath, headache, wheezing, and cough were higher among individuals with a household member who smoked inside the house. The results indicated that the odds of shortness of breath, headache, and cough were significantly lower among participants exposed to incense use. Conclusion: Based on the results of this study, we suggest developing programs to combat the sources of indoor air pollution and the associated unhealthy symptoms, especially in rural settings. It is also important to bring awareness and practice clean fuel usage at individual and community levels to improve population health.


This study is the first of its kind to explore indoor air pollution and unhealthy symptoms among a large sample in India. We believe it will contribute significantly to the global literature on indoor pollution and health outcomes.

2.
Mycopathologia ; 176(3-4): 225-32, 2013 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23813152

RESUMEN

Fungal infections of foot in patients with diabetes are not uncommon; however, foot infection due to Fusarium species has been rarely reported. We report here a case of a 50-year-old male with type 2 diabetes who developed multiple spontaneous nodular lesions on right foot without any systemic symptoms and signs for 6 months. The lesions were unresponsive to broad-spectrum antibacterial treatment. Fine needle aspiration cytology of nodular lesions revealed the presence of fungal hyphae, and Fusarium species was isolated from the same sample which was identified as Fusarium solani species complex: Fusarium falciforme. Radiological investigations and blood culture ruled out any dissemination of the disease. The lesions healed after voriconazole therapy for 3 months. No relapse was noted at the end of the next 6-month follow-up. All reported cases of Fusarium infection of foot in patients with diabetes in English and non-English literature since 1970 have been reviewed.


Asunto(s)
Complicaciones de la Diabetes/diagnóstico , Complicaciones de la Diabetes/patología , Diabetes Mellitus Tipo 2/complicaciones , Pie/patología , Fusariosis/diagnóstico , Fusariosis/patología , Fusarium/aislamiento & purificación , Antifúngicos/uso terapéutico , Biopsia con Aguja Fina , Pie/microbiología , Fusarium/clasificación , Humanos , Masculino , Persona de Mediana Edad , Pirimidinas/uso terapéutico , Triazoles/uso terapéutico , Voriconazol
3.
J Forensic Odontostomatol ; 41(2): 2-9, 2023 Aug 27.
Artículo en Inglés | MEDLINE | ID: mdl-37634171

RESUMEN

Sex determination or sex estimation from a single or fragment of bone is always difficult in the absence of other bones from the same individual. The current study was an attempt to estimate the sex of an individual from the posterior ramus of mandible or the mandibular ramus flexure. A retrospective study was conducted using orthopantomographs (OPGs) of 200 males and 200 females between the age group of 20 - 70 years. Each radiographic image was examined for the presence of a flexure or notching on the posterior border of the ramus in relation to occlusal plane as the method followed by Loth & Henneberg 1996.The study resulted in samples that were correctly classified as females 59.5% and males 57.5 %. The overall correct sex estimation was achieved in 58.5% of the cases. The predictive accuracy or assessment was higher for females compared to males. Consequently, the posterior ramus of mandible or mandibular ramus flexure can be considered as supplementary rather than a definitive means of sex determination. Hence, it is preferable to include as many parameters as possible to attain optimal accuracy.


Asunto(s)
Pueblo Asiatico , Mandíbula , Determinación del Sexo por el Esqueleto , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Oclusión Dental , Mandíbula/diagnóstico por imagen , Polímeros , Estudios Retrospectivos , Determinación del Sexo por el Esqueleto/métodos
4.
Acta Neurol Scand ; 124(3): 211-4, 2011 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-20969559

RESUMEN

OBJECTIVE: To compare the medication dose reduction between deep brain stimulation (DBS) of the globus pallidus interna (GPi) vs subthalamic nucleus (STN) in matched patients with Parkinson's disease (PD). MATERIALS AND METHODS: Records of 12 patients with PD who underwent GPi-DBS at our institution from 2002 to 2008 were matched by pre-operative PD medication doses and pre-operative motor Unified Parkinson's Disease Rating Scale (UPDRS) scores to 12 cases of STN-DBS. PD medication doses were converted to levodopa equivalent doses (LEDs). RESULTS: GPi and STN groups had similar mean pre-operative LEDs and motor UPDRS scores. At 6 months post-DBS, there was no significant difference in percent reduction in LEDs between the GPi (47.95%) and STN (37.47%) groups (P = 0.52). The mean post-operative 'medication off/stimulation on' motor UPDRS scores did not differ significantly between GPi (15.33) and STN (16.25) groups (P = 0.74). The mean percent reduction in motor UPDRS scores was also similar between GPi (58.44%) and STN (58.98%) patients (P = 0.94). CONCLUSIONS: We conclude that in disease-matched patients with PD undergoing DBS, both GPi and STN may result in similar reduction in PD medication doses.


Asunto(s)
Estimulación Encefálica Profunda/estadística & datos numéricos , Globo Pálido/fisiología , Levodopa/administración & dosificación , Enfermedad de Parkinson/tratamiento farmacológico , Enfermedad de Parkinson/cirugía , Núcleo Subtalámico/fisiología , Anciano , Antiparkinsonianos/administración & dosificación , Estimulación Encefálica Profunda/métodos , Humanos , Estudios Longitudinales , Persona de Mediana Edad , Vías Nerviosas/efectos de los fármacos , Vías Nerviosas/fisiopatología , Vías Nerviosas/cirugía , Enfermedad de Parkinson/fisiopatología , Estudios Retrospectivos , Tiempo , Resultado del Tratamiento
5.
Rheumatol Int ; 31(12): 1561-5, 2011 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-20490806

RESUMEN

The objective of the present study is to compare and quantify the postural differences and joint pain distribution between subjects with benign joint hypermobility syndrome (BJHS) and the normal population. This observational, non-randomized, and controlled study was conducted at Rheumatology and Physical Medicine and Rehabilitation Medicine Departments of a tertiary care teaching hospital. Subjects comprise 35 persons with diagnosis of BJHS, and the control group was matched for age and sex. Reedco's Posture score (RPS) and visual analogue scale (VAS) were the outcome measures. The subjects were assessed for pain in ten major joints and rated on a VAS. A standard posture assessment was conducted using the Reedco's Posture score. The same procedure was executed for an age- and sex-matched control group. Mean RPS for the BJHS group was 55.29 ± 8.15 and for the normal group it was 67 ± 11.94. The most common postural deviances in subjects with BJHS were identified in the following areas of head, hip (Sagittal plane), upper back, trunk, and lower back (Coronal plane). Intensity of pain was found to be more in BJHS persons than that of the normal persons, and the knee joints were the most affected. The present study compared and quantified the postural abnormalities and the pain in BJHS persons. The need for postural re-education and specific assessment and training for the most affected joints are discussed. There is a significant difference in posture between subjects with BJHS and the normal population. BJHS persons need special attention to their posture re-education during physiotherapy sessions to reduce long-term detrimental effects on the musculoskeletal system.


Asunto(s)
Inestabilidad de la Articulación/fisiopatología , Dolor/fisiopatología , Equilibrio Postural/fisiología , Adolescente , Adulto , Niño , Femenino , Humanos , Inestabilidad de la Articulación/terapia , Traumatismos de la Rodilla/terapia , Articulación de la Rodilla/fisiopatología , Masculino , Dimensión del Dolor , Modalidades de Fisioterapia , Adulto Joven
7.
Bone Joint J ; 101-B(7_Supple_C): 98-103, 2019 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-31256646

RESUMEN

AIMS: The aim of this study was to determine the general postoperative opioid consumption and rate of appropriate disposal of excess opioid prescriptions in patients undergoing primary unilateral total knee arthroplasty (TKA). PATIENTS AND METHODS: In total, 112 patients undergoing surgery with one of eight arthroplasty surgeons at a single specialty hospital were prospectively enrolled. Three patients were excluded for undergoing secondary procedures within six weeks. Daily pain levels and opioid consumption, quantity, and disposal patterns for leftover medications were collected for six weeks following surgery using a text-messaging platform. RESULTS: Overall, 103 of 109 patients (94.5%) completed the daily short message service (SMS) surveys. The mean oral morphine equivalents (OME) consumed during the six weeks post-surgery were 639.6 mg (sd 323.7; 20 to 1616) corresponding to 85.3 tablets of 5 mg oxycodone per patient. A total of 66 patients (64.1%) had stopped taking opioids within six weeks of surgery and had the mean equivalent of 18 oxycodone 5 mg tablets remaining. Only 17 patients (25.7%) appropriately disposed of leftover medications. CONCLUSION: These prospectively collected data provide a benchmark for general opioid consumption after uncomplicated primary unilateral TKA. Many patients are prescribed more opioids than they require, and leftover medication is infrequently disposed of appropriately, which increases the risk for illicit diversion. Cite this article: Bone Joint J 2019;101-B(7 Supple C):98-103.


Asunto(s)
Analgésicos Opioides/uso terapéutico , Artroplastia de Reemplazo de Rodilla/efectos adversos , Manejo del Dolor/métodos , Dolor Postoperatorio/prevención & control , Pautas de la Práctica en Medicina , Anciano , Anciano de 80 o más Años , Prescripciones de Medicamentos/estadística & datos numéricos , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Dolor Postoperatorio/epidemiología , Estudios Prospectivos , Encuestas y Cuestionarios , Estados Unidos/epidemiología
8.
Br J Cancer ; 99(10): 1748-53, 2008 Nov 18.
Artículo en Inglés | MEDLINE | ID: mdl-18841155

RESUMEN

Testicular germ cell tumours (TGCT) cluster in families, but responsible genes remain unidentified. The association between testicular microlithiasis (TM) and testicular carcinoma in situ (CIS) suggests that TM may be a TC risk factor. We report testicular ultrasound findings in men with familial TGCT (FTGCT) and their unaffected relatives. A total of 81 men (48 affected and 33 unaffected) from 31 families with > or =2 TC cases underwent testicular ultrasound. Testicular microlithiasis was defined as either 'classic' (> or =5 microliths) or 'limited' (<5 microliths). Statistical analyses used Fisher's exact test and permutation testing. Testicular microlithiasis was more frequent in the contralateral testicles of men with a history of TGCT (affected men) than in unaffected men (48 vs 24%, P=0.04). The association appeared stronger for classic TM (21 vs 9%) than for limited TM (27 vs 15%). Testicular microlithiases were bilateral in six out of seven (87%) unaffected men. Among affected men, TM was not associated with histology, age at diagnosis or cancer treatment. Of the 31 families, 10 accounted for a majority (61%) of the TM cases identified (P=0.11). Testicular microlithiasis was more prevalent among FTGCT family members than described previously in the general population, and was more common among FTGCT cases vs unaffected blood relatives. Testicular microlithiasis appeared to cluster in certain families. These findings suggest both a familial predisposition to TM and an association between TM and FTGCT. If proven, this could be clinically important to men in FTGCT families, and may be useful in identifying specific genes involved in FTGCT.


Asunto(s)
Litiasis/epidemiología , Neoplasias de Células Germinales y Embrionarias/epidemiología , Enfermedades Testiculares/epidemiología , Neoplasias Testiculares/epidemiología , Adulto , Comorbilidad , Familia , Humanos , Masculino , Prevalencia
9.
Cell Death Differ ; 12 Suppl 1: 962-70, 2005 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-15832179

RESUMEN

The destruction of CD4(+) T cells and eventual induction of immunodeficiency is a hallmark of the human immunodeficiency virus type 1 infection (HIV-1). However, the mechanism of this destruction remains unresolved. Several auxiliary proteins have been proposed to play a role in this aspect of HIV pathogenesis including a 14 kDa protein named viral protein R (Vpr). Vpr has been implicated in the regulation of various cellular functions including apoptosis, cell cycle arrest, differentiation, and immune suppression. However, the mechanism(s) involved in Vpr-mediated apoptosis remains unresolved, and several proposed mechanisms for these effects are under investigation. In this review, we discuss the possibility that some of these proposed pathways might converge to modulate Vpr's behavior. Further, we also discuss caveats and future directions for investigation of the interesting biology of this HIV accessory gene.


Asunto(s)
Apoptosis , Linfocitos T CD4-Positivos/virología , Productos del Gen vpr/fisiología , VIH-1/fisiología , Proteínas Adaptadoras Transductoras de Señales , Animales , Linfocitos T CD4-Positivos/inmunología , Linfocitos T CD4-Positivos/metabolismo , Complejo del Señalosoma COP9 , Proteínas Portadoras/fisiología , Factores Eucarióticos de Iniciación/fisiología , Productos del Gen vpr/antagonistas & inhibidores , Productos del Gen vpr/farmacología , Proteínas HSP70 de Choque Térmico/farmacología , Humanos , Membranas Intracelulares/efectos de los fármacos , Potenciales de la Membrana/efectos de los fármacos , Mitocondrias/efectos de los fármacos , Complejos Multiproteicos/fisiología , Péptido Hidrolasas/fisiología , Receptores de Glucocorticoides/efectos de los fármacos , Transducción de Señal/efectos de los fármacos , Productos del Gen vpr del Virus de la Inmunodeficiencia Humana
10.
Clin Cancer Res ; 5(9): 2324-9, 1999 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-10499600

RESUMEN

We conducted a Phase II clinical trial of the antiproliferative, antimetastatic, and antiangiogenic agent carboxyamido-triazole (CAI), using pharmacokinetic assessment to guide drug dosing. Fifteen patients who had stage D2 androgen-independent prostate cancer with soft tissue metastases were enrolled. Because CAI previously had been shown to decrease prostate-specific antigen secretion in vitro, this marker was not used to assess disease status. The dose of CAI used in this study was calculated so that plasma steady-state maximum concentrations between 2.0 and 5.0 microg/ml would be maintained. Following the initial dosage adjustment, 93% (14 of 15) of patients were within the predicted range. Fourteen of 15 patients were evaluable for response. All of the 14 evaluable patients demonstrated progressive disease at approximately 2 months. Twelve patients progressed by computed tomography and or bone scan at 2 months, whereas two patients demonstrated clinical progression at 1.5 and 2 months. One patient was removed from study at 6 weeks due to grade II peripheral neuropathy lasting >1 month. Although no clinical responses were noted, a 27.7% decrease in serum vascular endothelial growth factor concentration was observed. CAI does not possess clinical activity in patients with androgen-independent prostate cancer and soft tissue metastases. Pharmacokinetically guided dosing, although found to be feasible using a Bayesian approach, was not found to be of practical benefit. Although plasma CAI concentrations were maintained within the designated range, grade III toxicity requiring drug discontinuation was still observed.


Asunto(s)
Adenocarcinoma/tratamiento farmacológico , Adenocarcinoma/metabolismo , Andrógenos/fisiología , Antineoplásicos/farmacocinética , Antineoplásicos/uso terapéutico , Neoplasias Hormono-Dependientes/tratamiento farmacológico , Neoplasias de la Próstata/tratamiento farmacológico , Neoplasias de la Próstata/metabolismo , Triazoles/farmacocinética , Triazoles/uso terapéutico , Anciano , Inhibidores de la Angiogénesis/efectos adversos , Inhibidores de la Angiogénesis/farmacocinética , Inhibidores de la Angiogénesis/uso terapéutico , Antineoplásicos/efectos adversos , Humanos , Masculino , Persona de Mediana Edad , Neoplasias Hormono-Dependientes/metabolismo , Triazoles/efectos adversos
11.
Clin Cancer Res ; 7(7): 1888-93, 2001 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-11448901

RESUMEN

PURPOSE: Thalidomide is a potent teratogen that causes dysmelia in humans. Recently, in vitro data suggested that it inhibits angiogenesis. Prostate cancer is dependent on the recruitment of new blood vessels to grow and metastasize. Based on those data, we initiated a Phase II trial of thalidomide in patients with metastatic androgen-independent prostate cancer. EXPERIMENTAL DESIGN: This was an open-label, randomized Phase II study. Thalidomide was administered either at a dose of 200 mg/day (low-dose arm) or at an initial dose of 200 mg/day that escalated to 1200 mg/day (high-dose arm). RESULTS: A total of 63 patients were enrolled onto the study (50 patients on the low-dose arm and 13 patients on the high-dose arm). Serum prostate-specific antigen (PSA) decline of > or = 50% was noted in 18% of patients on the low-dose arm and in none of the patients on the high-dose arm. Four patients were maintained for > 150 days. The most prevalent complications were constipation, fatigue, neurocortical, and neurosensory. CONCLUSION: Thalidomide, an antiangiogenesis agent, has some activity in patients with metastatic prostate cancer who have failed multiple therapies. A total of 27% of all patients had a decline in PSA of > or = 40%, often associated with an improvement of clinical symptoms. Because our preclinical studies had shown that thalidomide increases PSA secretion, we believe that the magnitude of PSA decline seen in our trial justifies further study.


Asunto(s)
Inhibidores de la Angiogénesis/uso terapéutico , Neoplasias de la Próstata/tratamiento farmacológico , Talidomida/uso terapéutico , Anciano , Anciano de 80 o más Años , Andrógenos/fisiología , Relación Dosis-Respuesta a Droga , Factores de Crecimiento Endotelial/sangre , Factor 2 de Crecimiento de Fibroblastos/sangre , Factor 2 de Crecimiento de Fibroblastos/efectos de los fármacos , Estudios de Seguimiento , Humanos , Linfocinas/sangre , Linfocinas/efectos de los fármacos , Linfotoxina-alfa/sangre , Masculino , Persona de Mediana Edad , Trastornos del Humor/inducido químicamente , Neovascularización Patológica/patología , Neutropenia/inducido químicamente , Antígeno Prostático Específico/sangre , Antígeno Prostático Específico/efectos de los fármacos , Neoplasias de la Próstata/irrigación sanguínea , Neoplasias de la Próstata/patología , Análisis de Supervivencia , Factores de Tiempo , Resultado del Tratamiento , Factor de Necrosis Tumoral alfa/efectos de los fármacos , Factor de Necrosis Tumoral alfa/metabolismo , Factor A de Crecimiento Endotelial Vascular , Factores de Crecimiento Endotelial Vascular
12.
Diabetes Care ; 24(11): 1978-83, 2001 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-11679468

RESUMEN

OBJECTIVE: To determine whether insulin resistance and secretion differ in obese premenopausal African-American women with and without glucose intolerance. RESEARCH DESIGN AND METHODS: A total of 63 women underwent oral glucose tolerance tests (OGTTs). A total of 48 women underwent frequently sampled intravenous glucose tolerance tests (FSIGTs). Insulin resistance was determined from the insulin sensitivity index (S(I)) from the FSIGT. Insulin secretion during the OGTT was determined by (I(30 min) - I(0 min))/(G(30 min) - G(0 min)) and during the FSIGT by the acute insulin response to glucose (AIRg). The disposition index, the product of AIRg and S(I), was used to determine whether AIRg was adequate to compensate for insulin resistance. Statistical analyses included one-way analysis of variance with Bonferroni corrections for multiple comparisons and regression analyses. RESULTS: The women were divided into three groups: nonobese glucose tolerant (n = 32), obese glucose tolerant (n = 17), and obese glucose intolerant (n = 14). The BMI of the three groups were 24.8 +/- 2.3, 37.8 +/- 5.5, and 42.0 +/- 7.6 kg/m(2) (mean +/- SD), respectively (P < 0.0001). The ages of the three groups were 34.9 +/- 8.4, 32.1 +/- 5.0, and 41.1 +/- 6.3 years (P = 0.011). S(I) was higher in the nonobese women than in the obese glucose-tolerant women (3.99 +/- 1.44 vs. 2.66 +/- 2.14 l x mU(-1) x min(-1), P = 0.03). S(I) was similar in the obese glucose-intolerant and obese glucose-tolerant women (2.12 +/- 1.27 vs. 2.66 +/- 2.14 l x mU(-1) x min(-1), P = 0.9). OGTT showed that insulin secretion was lower in the glucose-intolerant than the obese glucose-tolerant women (1.73 +/- 1.38 vs. 3.62 +/- 2.11, P = 0.005). FSIGT showed that AIRg was not significantly lower in glucose-intolerant than in obese glucose-tolerant women (807 +/- 665 vs. 1,253 +/- 655 mU x l(-1) x min, P = 0.078). The disposition index was lower in glucose-intolerant than in obese glucose-tolerant women (1,324 +/- 1,061 vs. 2,656 +/- 1,415, P = 0.014). CONCLUSIONS: Obese premenopausal African-American women with and without glucose intolerance have a similar degree of insulin resistance but differ in insulin secretion.


Asunto(s)
Población Negra , Glucemia/metabolismo , Intolerancia a la Glucosa/sangre , Resistencia a la Insulina/fisiología , Insulina/metabolismo , Islotes Pancreáticos/metabolismo , Obesidad/sangre , Premenopausia/fisiología , Absorciometría de Fotón , Tejido Adiposo/anatomía & histología , Tejido Adiposo/diagnóstico por imagen , Negro o Afroamericano , Composición Corporal , Femenino , Prueba de Tolerancia a la Glucosa , Humanos , Infusiones Intravenosas , Insulina/administración & dosificación , Insulina/sangre , Secreción de Insulina , Anamnesis , National Institutes of Health (U.S.) , Tamaño de los Órganos , Examen Físico , Análisis de Regresión , Tomografía Computarizada por Rayos X , Estados Unidos
13.
J Clin Endocrinol Metab ; 85(11): 4359-66, 2000 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-11095480

RESUMEN

Carney complex (CNC) is a familial multiple neoplasia and lentiginosis syndrome (OMIM 160980, http://www.ncbi.nlm.nih.gov/omim) with features overlapping those of other multiple endocrine neoplasias and hamartomatoses, Peutz-Jeghers syndrome (PJS) in particular. Although a number of patients with CNC and ovarian tumors have been described in individual patient reports, it is unclear whether ovarian lesions constitute a component of the syndrome or are coincidental events. We investigated 18 women with CNC [age at first evaluation, 31.3+/-12.1 yr (mean +/- SD)] prospectively for the development of ovarian tumors over a period of 35.7+/-30.6 months by physical examination and pelvic ultrasonography. They were compared with 11 women (age at first evaluation, 32.9+/-17 yr) who were enrolled under the same protocol (follow up, 32.3+/-25.1 months) and served as a control group. In addition, a registry of 178 women from among a total of 309 patients with CNC was searched retrospectively for any having ovarian tumors. Seven available histological specimens were rereviewed. None of the CNC patients had ovarian tumors analogous to those of PJS. Two patients with CNC in the prospective group developed ovarian tumors and were operated upon. One had bilateral oophorectomy for asynchronous serous cystadenomas. The second patient had a unilateral serous cystadenoma. Resected tumor tissue from both patients was tested for genetic abnormalities of the chromosomal regions to which CNC genetic loci have been mapped. Both showed genomic amplification of chromosomal region 2p16. An additional 10 patients had at least 1 sonogram positive for ovarian cysts. Only 1 of the patients in the control group was found to have a persistent, simple ovarian cyst by ultrasonography. The registry of 178 CNC patients included 4 who had undergone surgery for ovarian tumors. The diagnoses included endometrioid adenocarcinoma (1 patient) and metastatic mucinous adenocarcinoma (the primary site was probably ovarian; 1 patient). In addition, 7 of 12 patients (58%) with CNC, who died of other causes, had ovarian lesions at autopsy. In conclusion, although the same stromal tumor, large-cell calcifying Sertoli cell tumor, affects the testes in CNC and PJS, we did not find such tumors in a small population of CNC patients that was studied prospectively or a larger group of CNC patients that was studied retrospectively. The results of our study also suggested that women with CNC commonly develop ovarian cysts and may be at risk for ovarian carcinoma. The chromosome 2p16 CNC locus was involved in ovarian pathology with apparent copy number gain, suggesting that at least molecularly there is some involvement of the CNC gene(s) in these lesions. Although ovarian tumors do not seem to be a major manifestation of CNC, sonography of the ovaries may be part of the initial evaluation for this genetic syndrome in women with CNC; follow-up of any identified lesion is recommended because of the possible risk for malignancy.


Asunto(s)
Predisposición Genética a la Enfermedad , Síndromes Neoplásicos Hereditarios/genética , Neoplasias Ováricas/genética , Ovario/patología , Adolescente , Adulto , Edad de Inicio , Carcinoma Endometrioide/genética , Carcinoma Endometrioide/patología , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Neoplasia Endocrina Múltiple , Neoplasias Ováricas/diagnóstico por imagen , Neoplasias Ováricas/patología , Estudios Prospectivos , Factores de Tiempo , Ultrasonografía , Neoplasias del Cuello Uterino/genética , Neoplasias del Cuello Uterino/patología , Neoplasias del Cuello Uterino/cirugía
14.
FEBS Lett ; 557(1-3): 99-103, 2004 Jan 16.
Artículo en Inglés | MEDLINE | ID: mdl-14741348

RESUMEN

A 63 residue peptide, p7, encoded by hepatitis C virus was synthesised and tested for ion channel activity in lipid bilayer membranes. Ion channels formed by p7 had a variable conductance: some channels had conductances as low as 14 pS. The reversal potential of currents flowing through the channels formed by p7 showed that they were permeable to potassium and sodium ions and less permeable to calcium ions. Addition of Ca(2+) to solutions made channels formed by p7 less potassium- or sodium-selective. Hexamethylene amiloride, a drug previously shown to block ion channels formed by Vpu encoded by HIV-1, blocked channels formed by p7. In view of the increasing number of peptides encoded by viruses that have been shown to form ion channels, it is suggested that ion channels may play an important role in the life cycle of many viruses and that drugs that block these channels may prove to be useful antiviral agents.


Asunto(s)
Amilorida/análogos & derivados , Amilorida/farmacología , Canales Iónicos/biosíntesis , Membrana Dobles de Lípidos , Proteínas Virales/farmacología , Secuencia de Aminoácidos , Canales Iónicos/efectos de los fármacos , Potenciales de la Membrana/efectos de los fármacos , Datos de Secuencia Molecular , Fragmentos de Péptidos/química , Fragmentos de Péptidos/farmacología , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción , Proteínas Virales/química
15.
Cancer Epidemiol Biomarkers Prev ; 9(9): 917-21, 2000 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-11008909

RESUMEN

There are strong data showing that increased breast cancer risk is associated with increased mammographic density. Tamoxifen has been shown to decrease the risk of invasive breast cancer and decrease breast density. We sought to demonstrate and calculate the extent of change in mammographic density in women who have taken tamoxifen for up to 2 years. We evaluated mammograms from 28 high-risk women who were taking tamoxifen. Four different methods of evaluation were used: (a) two qualitative methods (Wolfe criteria and the American College of Radiology Breast Imaging and Reporting Data System criteria); (b) one semiquantitative method (mammograms were assigned one of five semiquantitative scores by visual inspection); and (c) one quantitative method (computer-aided calculation of fibroglandular area from digitized mammograms). The Wolfe criteria showed a 0.03 category decrease per year (P = 0.50). The American College of Radiology Breast Imaging and Reporting Data System criteria showed a 0.1 category decrease per year (P = 0.12). Semiquantitative criteria showed a 0.2 category decrease per year (P = 0.039). Digitized scores showed a 4.3% decrease per year (P = 0.0007). In conclusion, tamoxifen causes a decrease in mammographic density with use, an effect that is better quantitated with semiquantitative criteria or digitized images. Density change might become useful as a surrogate end point for the effect of tamoxifen and other chemopreventive measures, although our data do not predict an individual's degree of risk reduction.


Asunto(s)
Mama/efectos de los fármacos , Moduladores Selectivos de los Receptores de Estrógeno/farmacología , Tamoxifeno/farmacología , Tretinoina/análogos & derivados , Adulto , Factores de Edad , Anciano , Anticarcinógenos/farmacología , Anticarcinógenos/uso terapéutico , Antineoplásicos/farmacología , Antineoplásicos/uso terapéutico , Biomarcadores de Tumor , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/patología , Carcinoma in Situ/tratamiento farmacológico , Carcinoma in Situ/patología , Carcinoma Ductal de Mama/tratamiento farmacológico , Carcinoma Ductal de Mama/patología , Carcinoma Lobular/tratamiento farmacológico , Carcinoma Lobular/patología , Estudios de Factibilidad , Femenino , Humanos , Mamografía/métodos , Persona de Mediana Edad , Proyectos Piloto , Posmenopausia , Intensificación de Imagen Radiográfica , Reproducibilidad de los Resultados , Moduladores Selectivos de los Receptores de Estrógeno/uso terapéutico , Tamoxifeno/uso terapéutico , Tretinoina/farmacología , Tretinoina/uso terapéutico
16.
Invest Radiol ; 25(6): 703-7, 1990 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-2354934

RESUMEN

A quadtree-based data compression algorithm can provide different levels of compression within and outside of regions of interest (ROIs). The current study shows whether ROI compression can provide greater compression or diagnostic accuracy than uniform quadtree compression. In 75 single CT images from 75 consecutive abdominal examinations, 43 abnormalities were identified and surrounded by ROIs. Three radiologists interpreted the images following (1) 50:1 compression of the entire image; (2) ROI compression at five decreasing compression ratios (with 50:1 compression outside the ROI); and (3) reversible (lossless) compression of the entire image. Reversible compression (compression ratio 3:1) yielded a sensitivity of 96%. ROI compression of 15:1 was achieved with no loss of sensitivity; ROI compression of 28:1 yielded a sensitivity of 91% (not significantly different). At any given compression ratio, diagnostic sensitivity was greater with ROI compression than with uniform quadtree compression. For purposes of image archiving, quadtree-based ROI compression is superior to uniform compression of CT images.


Asunto(s)
Algoritmos , Procesamiento de Imagen Asistido por Computador , Tomografía Computarizada por Rayos X , Humanos , Sistemas de Información Radiológica
17.
Clin Nucl Med ; 20(3): 222-5, 1995 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-7750215

RESUMEN

The authors describe a case in which Tc-99m sestamibi demonstrated increased vascularity and uptake in a hyperfunctioning autograft in a patient with recurrent hyperparathyroidism and multiple endocrine neoplasia type 1. Findings were confirmed by differential parathyroid hormone levels in antecubital venous blood samples, ultrasound with color Doppler, MRI, and surgery.


Asunto(s)
Hiperparatiroidismo/diagnóstico por imagen , Glándulas Paratiroides/trasplante , Tecnecio Tc 99m Sestamibi , Femenino , Antebrazo , Humanos , Hiperparatiroidismo/diagnóstico , Hiperparatiroidismo/etiología , Hiperparatiroidismo/cirugía , Imagen por Resonancia Magnética , Persona de Mediana Edad , Neoplasia Endocrina Múltiple Tipo 1/cirugía , Glándulas Paratiroides/diagnóstico por imagen , Glándulas Paratiroides/patología , Cintigrafía , Recurrencia , Trasplante Autólogo , Ultrasonografía Doppler en Color
18.
Indian J Endocrinol Metab ; 18(6): 821-5, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-25364677

RESUMEN

CONTEXT: It is evident that about 30-50% of patients with Vitamin D deficiency (VDD) do not manifest develop secondary hyperparathyroidism (SHPT). A number of theories have been proposed to explain this lack of SHPT, including hypomagnesemia. SETTINGS AND DESIGN: Retrospective review of laboratory database. MATERIALS AND METHODS: We evaluated the differences in serum magnesium (Mg) levels among those with VDD with or without SHPT. A retrospective review of 6255 laboratory data of bone mineral profiles performed in the period of 2007-2013. After excluding patients with hypercalcemia, renal dysfunction/unknown kidney function and primary hypothyroidism, the remaining 1323 patient data were analyzed. SHPT was defined as serum parathyroid hormone >65 in those with VDD. STATISTICAL ANALYSIS USED: ANOVA and Wilcoxon tests as appropriate to compare means. Multivariate logistic regression to analyze relation between variables and outcome of SHPT. RESULTS: We noted that 55% patients (n = 727) had VDD, and among those who had VDD, 23% (n = 170) were hypocalcemic (corrected serum calcium <8.5). Patients with VDD who did not exhibit SHPT were 56% (n = 407). The mean (±standard deviation) serum Mg levels in the entire cohort (n = 1323) was 1.94 ± 0.26 mg/dl and 1.95 ± 0.26 mg/dl in VDD cohort and 2 ± 0.31 mg/dl in the VDD-hypocalcemic cohort. There was no statistical difference in the Mg levels among those with SHPT compared to those without SHPT (P = 0.14). Serum calcium and phosphorus were lower in those with SHPT (P = 0.06 and P < 0.001, respectively). In multivariate logistic regression, serum calcium (P = 0.043), phosphorus (P < 0.001) and severe VDD (P < 0.001) independently correlated with occurrence of SHPT in VDD. CONCLUSIONS: Serum Mg levels did not explain the functional hypoparathyroidism seen in about half of the patients with VDD. A low normal serum calcium and phosphorus levels are more likely to be associated with VDD patients who develop SHPT.

19.
Indian J Endocrinol Metab ; 16(3): 469-71, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22629525

RESUMEN

Adrenal incidentalomas of more than 4 cm size are usually malignant. We describe a 28-year-old woman with a 7-cm, non-functioning, well-demarcated adrenal mass, which was identified as an oncocytoma on histopathological examination. Therefore, a large, non-functioning, unilateral adrenal mass with preserved tumor outline should invoke the suspicion of oncocytoma, which is invariably a benign tumor.

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