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1.
Artigo em Inglês | MEDLINE | ID: mdl-38274289

RESUMO

Objective: To assess early care and education professionals' breastfeeding knowledge and practices before and after an e-learning program. Participants: Early care and education professionals from New Hampshire (U.S.A.) licensed child care programs were invited to complete a pre-assessment followed by a 90-minute e-learning breastfeeding program. Three months post-training, participants were invited to complete the post-assessment. Analysis: McNemar tests were used to assess changes from pre-post-assessment for dichotomous variables. McNemar-Bowker tests were used to determine differences from pre-post for variables with more than two categories. When the McNemar-Bowker test was significant, a multiple comparison correction (Bonferroni) was used. Results: 114 participants completed the e-learning program and pre-post assessment. Results showed significant improvement from pre-post in 10 of 15 breastfeeding knowledge questions related to health of baby, mother and child care centers, economics, and environmental impact. There were significant changes from pre-post in 24 of 50 breastfeeding practice questions in handling breast milk, promoting breastfeeding, and supporting mothers. Conclusions and Implications: This study indicates improvement in early care and education professionals' breastfeeding knowledge and practices; however, opportunities exist to design targeted initiatives to further strengthen practices that support breastfeeding families in the child care environment.

2.
J Hosp Infect ; 100(3): 270-275, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-29730141

RESUMO

INTRODUCTION: Antimicrobial stewardship programmes (ASPs) serve as the primary method to prevent and manage the development of antimicrobial resistance. Rural settings may lack the recommended personnel and resources needed to provide antimicrobial stewardship services. METHODS: An electronic survey was distributed via e-mail to pharmacy directors or antimicrobial stewardship programme directors of licensed hospitals within Public Health Region 4/5N of East Texas. RESULTS: Sixty percent of ASPs were established <12 months prior to the survey administration. All ASPs had pharmacist involvement, with only one (5%) having formal infectious diseases (ID) training through postgraduate education. Ninety percent of ASPs had a physician champion, with five (27.8%) physicians having formal ID training. Most institutions lacked one or more recommended antimicrobial stewardship practices. When compared with ASPs established for <12 months, ASPs existing for at least 12 months were more likely to have protocols to change antimicrobials from intravenous to enteral forms (100% vs 50%, P = 0.042), provide education to patients and families on appropriate antimicrobial use (87.5% vs 33.3%, P = 0.028), and track antimicrobial purchasing costs (87.5% vs 33.3%, P = 0.028). CONCLUSIONS: Institutions in rural settings require additional resources, personnel, and time to implement ASPs and perform various antimicrobial stewardship practices.


Assuntos
Antibacterianos/uso terapêutico , Gestão de Antimicrobianos , Pesquisa sobre Serviços de Saúde , Estudos Transversais , Hospitais Rurais , Humanos , População Rural , Texas
3.
Diabet Med ; 33(11): 1528-1535, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27028025

RESUMO

AIMS: To study the impact of glycaemic control on urinary incontinence in women who participated in the Diabetes Control and Complications Trial (DCCT; 1983-1993) and its observational follow-up study, the Epidemiology of Diabetes Interventions and Complications (EDIC; 1994-present). METHODS: Study participants were women who completed, at both years 10 (2003) and 17 (2010) of the EDIC follow-up, the urological assessment questionnaire (UroEDIC). Urinary incontinence was defined as self-reported involuntary leakage of urine that occurred at least weekly. Incident urinary incontinence was defined as weekly urinary incontinence present at EDIC year 17 but not at EDIC year 10. Multivariable regression models were used to examine the association of incident urinary incontinence with comorbid prevalent conditions and glycaemic control (mean HbA1c over the first 10 years of EDIC). RESULTS: A total of 64 (15.3%) women with Type 1 diabetes (mean age 43.6 ± 6.3 years at EDIC year 10) reported incident urinary incontinence at EDIC year 17. When adjusted for clinical covariates (including age, DCCT cohort assignment, DCCT treatment arm, BMI, insulin dosage, parity, hysterectomy, autonomic neuropathy and urinary tract infection in the last year), the mean EDIC HbA1c was associated with increased odds of incident urinary incontinence (odds ratio 1.03, 95% CI 1.01-1.06 per mmol/mol increase; odds ratio 1.41, 95% CI 1.07-1.89 per % HbA1c increase). CONCLUSIONS: Incident urinary incontinence was associated with higher HbA1c levels in women with Type 1 diabetes, independent of other recognized risk factors. These results suggest the potential for women to modify their risk of urinary incontinence with improved glycaemic control. (Clinical Trials Registry no: NCT00360815 and NCT00360893).


Assuntos
Diabetes Mellitus Tipo 1/complicações , Diabetes Mellitus Tipo 1/epidemiologia , Hemoglobinas Glicadas/metabolismo , Incontinência Urinária/epidemiologia , Adolescente , Adulto , Glicemia/metabolismo , Diabetes Mellitus Tipo 1/sangue , Diabetes Mellitus Tipo 1/terapia , Feminino , Seguimentos , Humanos , Incidência , Pessoa de Meia-Idade , Estudos Multicêntricos como Assunto/estatística & dados numéricos , Ensaios Clínicos Controlados Aleatórios como Assunto/estatística & dados numéricos , Fatores de Risco , Inquéritos e Questionários , Incontinência Urinária/sangue , Incontinência Urinária/etiologia , Adulto Jovem
5.
J Plast Reconstr Aesthet Surg ; 64(12): 1621-6, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21840779

RESUMO

BACKGROUND: The free anterolateral thigh flap (ALT) is now used as a 'workhorse flap'. The donor site morbidity is thought to be minimal, although most evidence derives from questionnaire-based studies rather than rigorous objective clinical assessment. In particular, robust quantitative data on thigh sensibility and quadriceps function is lacking. The aim of this study was to provide a comprehensive clinical assessment of donor site morbidity. METHODS: We performed a prospective study of consecutive free ALT perforator flaps performed at Salisbury Foundation Trust between March 2008 and April 2010. The donor site was assessed at six months including a questionnaire (symptoms, function), scar analysis (Vancouver Scar Scale, VSS), and evaluation of quadriceps power and lateral thigh sensibility (compared with the contralateral unoperated thigh). RESULTS: One hundred ALT flaps were performed on 97 patients (mean age 46.8 years). The donor site was closed directly in 88 cases and using a split skin graft in 12 cases. At follow-up (n=68), tingling was the most common reported symptom (59%), whereas pain, itching and muscle herniation were reported infrequently. Donor site scars were mostly flat, pale and soft but widened. Pathological scarring was rare. Sensibility was reduced in donor thighs (p<0.001) and correlated with flap width but peak quadriceps contraction was similar between donor and unoperated thighs. CONCLUSIONS: There was a high throughput and diverse application of ALT flap reconstructions during the study period. Reduced sensibility was common around the scar but rarely troublesome. Quadriceps function was not affected even when dissection of intramuscular perforators was required. The ALT is a versatile flap that can deliver a large skin paddle with minimal impact on thigh function.


Assuntos
Músculo Quadríceps/fisiologia , Retalhos Cirúrgicos , Coxa da Perna/fisiologia , Sítio Doador de Transplante , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Contração Muscular/fisiologia , Dinamômetro de Força Muscular , Estudos Prospectivos , Sítio Doador de Transplante/fisiologia , Adulto Jovem
6.
Injury ; 42(4): 381-4, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21145546

RESUMO

INTRODUCTION: The provision of a complex lower-limb trauma service has significant resource implications. This financial burden is not recognised by the current fixed price tariff system (Payment by Results). The aim of this study was to compare the actual costs of treatment with reimbursement. METHODS: We conducted a prospective study in two large regional plastic surgery centres in the UK, Salisbury Foundation Trust (SFT) and the Frenchay Hospital, Bristol (FH). The total cost of treatment for consecutive patients with complex lower limb trauma requiring free tissue transfer was calculated and compared with the Health Resource Group (HRG) tariff. RESULTS: A cost analysis was performed on 20 patients (10 Salisbury, 10 Frenchay) with open tibial fractures (all grade IIIb Gustillo & Anderson) requiring free-flap reconstruction (15 anterolateral thigh (ALT) flaps, one serratus, one latissimus dorsi (LD), one scapular and two gracilis). The mean treatment cost of performing a free flap was £12792 ± £970 SEM (SFT) and £10953 ± £650 (FH). In both centres, the cost was more than double the HRG tariff (£4220 SFT, £4892 FH, p < 0.05). CONCLUSIONS: Our study highlights the considerable disparity between the cost of managing patients with severe lower-limb trauma and the remuneration by Primary Care Trusts (PCTs). Accurate cost analysis of these cases will allow hospital trusts to negotiate appropriate tariffs with PCTs and develop services, which are cost neutral.


Assuntos
Tempo de Internação/economia , Extremidade Inferior/cirurgia , Procedimentos de Cirurgia Plástica/economia , Retalhos Cirúrgicos/economia , Fraturas da Tíbia/economia , Adulto , Codificação Clínica , Feminino , Custos de Cuidados de Saúde , Humanos , Tempo de Internação/estatística & dados numéricos , Masculino , Estudos Prospectivos , Procedimentos de Cirurgia Plástica/métodos , Fraturas da Tíbia/cirurgia
7.
J Hand Surg Eur Vol ; 35(5): 417-8, 2010 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-20515987

RESUMO

Absence of flexor digitorum superficialis function in the little finger is a relatively common congenital anomaly that can complicate assessment of little finger injuries. We reviewed the prevalence of unilateral and bilateral absence of superficialis function in the published literature. In appropriate studies identified (1352 people), the anomaly was unilateral in 92 individuals (6.8%) and bilateral in 81 (6.0%). If superficialis function is absent in one little finger, the probability of absence in the opposite hand is 0.64. If superficialis function is present, the probability of absence in the other little finger is 0.02 (1 in 50). Absence of little finger superficialis function in one hand is therefore not a reliable indicator of this function in the opposite hand.


Assuntos
Dedos/anormalidades , Tendões/anormalidades , Traumatismos dos Dedos/diagnóstico , Humanos
8.
Prostate Cancer Prostatic Dis ; 12(3): 285-7, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19488065

RESUMO

The National Institutes of Health-chronic prostatitis symptom index (NIH-CPSI) is a commonly used 13-item questionnaire for the assessment of symptom severity in men with chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS). For each item, score ranges are 0-1 (6 items), 0-3 (2 items), 0-5 (3 items), 0-6 (1 item) and 0-10 (1 item). This scoring system is straightforward, but items with wider score ranges are de facto weighted more, which could adversely affect the performance characteristics of the questionnaire. We rescored the NIH-CPSI so that equal weights were assigned to each item, and compared the performance of the standard and rescored questionnaires using the original validation dataset. Both the original and revised versions of the scoring algorithm discriminated similarly among groups of men with CP (n=151), benign prostatic hyperplasia (n=149) and controls (n=134). The internal consistency of the questionnaire was slightly better with the revised scoring, but values with the standard scoring were sufficiently high (Cronbach's >or=0.80). We conclude that although the rescored NIH-CPSI provides better face validity than the standard scoring algorithm, it requires additional calculation efforts and yields only marginal improvements in performance.


Assuntos
Dor Pélvica/diagnóstico , Prostatite/diagnóstico , Algoritmos , Doença Crônica , Humanos , Masculino , National Institutes of Health (U.S.) , Psicometria , Índice de Gravidade de Doença , Inquéritos e Questionários , Estados Unidos
9.
Nutr Metab Cardiovasc Dis ; 19(4): 247-52, 2009 May.
Artigo em Inglês | MEDLINE | ID: mdl-18804988

RESUMO

BACKGROUND AND AIMS: CD44 and its splice variants can be expressed on all leukocytes, conferring adhesive properties and enhancing cellular recruitment to the endothelium during inflammation. CD44 expression is increased in inflammatory conditions such as rheumatoid arthritis and CD44 variant 3 (CD44v3) expression may be associated with inflammation. We have examined CD44 and CD44v3 expression on peripheral blood monocytes from patients with peripheral arterial disease (PAD) and healthy controls. We have also examined the effect of fish oil supplementation on these markers. METHODS AND RESULTS: CD44 and CD44v3 were assessed at baseline and following dietary supplementation with fish oil for 12 weeks in both PAD and control groups. Monocytes from PAD patients had higher CD44 expression than those from controls (median intensity fluorescence (MIF): 480+/-278 vs 336+/-251 (mean+/-SD); p<0.001). Following 12 weeks' dietary supplementation with fish oil, CD44 expression was reduced in PAD patients (MIF: 480+/-278 vs 427+/-262; p=0.05) but not in controls (336+/-251 vs 355+/-280; ns). Monocyte CD44v3 expression was lower in cultured monocytes from PAD patients compared to those from controls (0.15+/-0.15 vs 0.22+/-0.14 OD units; p<0.02). This was increased in the PAD group following fish oil supplementation (0.15+/-0.14 to 0.27+/-0.23 OD units; p<0.001). CONCLUSION: Monocyte CD44 and CD44v3 expression are altered in arterial disease but are returned towards levels seen in control subjects by dietary fish oil supplementation.


Assuntos
Suplementos Nutricionais , Ácidos Docosa-Hexaenoicos/administração & dosagem , Ácido Eicosapentaenoico/administração & dosagem , Receptores de Hialuronatos/sangue , Monócitos/efeitos dos fármacos , Doenças Vasculares Periféricas/tratamento farmacológico , Administração Oral , Idoso , Idoso de 80 Anos ou mais , Cápsulas , Células Cultivadas , Combinação de Medicamentos , Humanos , Masculino , Pessoa de Meia-Idade , Monócitos/imunologia , Doenças Vasculares Periféricas/imunologia , Isoformas de Proteínas , Resultado do Tratamento
10.
Cell Death Differ ; 15(5): 831-40, 2008 May.
Artigo em Inglês | MEDLINE | ID: mdl-18259199

RESUMO

Deregulation of apoptotic pathways plays a central role in cancer pathogenesis. X-linked inhibitor of apoptosis protein (XIAP), is an antiapoptotic molecule, whose elevated expression has been observed in tumor specimens from patients with prostate carcinoma. Studies in human cancer cell culture models and xenograft tumor models have demonstrated that loss of XIAP sensitizes cancer cells to apoptotic stimuli and abrogates tumor growth. In view of these findings, XIAP represents an attractive antiapoptotic therapeutic target for prostate cancer. To examine the role of XIAP in an immunocompetent mouse cancer model, we have generated transgenic adenocarcinoma of the mouse prostate (TRAMP) mice that lack XIAP. We did not observe a protective effect of Xiap deficiency in TRAMP mice as measured by tumor onset and overall survival. In fact, there was an unexpected trend toward more aggressive disease in the Xiap-deficient mice. These findings suggest that alternative mechanisms of apoptosis resistance are playing a significant oncogenic role in the setting of Xiap deficiency. Our study has implications for XIAP-targeting therapies currently in development. Greater understanding of these mechanisms will aid in combating resistance to XIAP-targeting treatment, in addition to optimizing selection of patients who are most likely to respond to such treatment.


Assuntos
Adenocarcinoma/metabolismo , Modelos Animais de Doenças , Neoplasias da Próstata/metabolismo , Proteínas Inibidoras de Apoptose Ligadas ao Cromossomo X/metabolismo , Adenocarcinoma/patologia , Animais , Apoptose/fisiologia , Proliferação de Células , Feminino , Humanos , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Metástase Neoplásica , Neoplasias da Próstata/patologia , Isoformas de Proteínas/genética , Isoformas de Proteínas/metabolismo , Taxa de Sobrevida , Proteínas Inibidoras de Apoptose Ligadas ao Cromossomo X/genética
11.
Urology ; 65(3): 616-21, 2005 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-15780403

RESUMO

OBJECTIVES: To enumerate the amount of circulating tumor cells (CTCs) in patients with advanced prostate cancer and to investigate the relationship between these numbers, prostate-specific antigen (PSA) and prostate-specific membrane antigen (PSM) expression, and clinical parameters. METHODS: Whole blood was collected in proprietary CellSave tubes. Mononuclear cell fractions were isolated using epithelial cell antibody-coated magnetic nanoparticles. On one half of each immunomagnetically enriched cell fraction, automated fluorescent microscopy was used to identify the epithelial tumor cells. From the remainder of each sample, RNA extraction, cDNA synthesis, and polymerase chain reaction amplification of PSA and PSM were performed. RESULTS: Eighty-four patients with advanced prostate cancer submitted 130 samples for analysis. Intact CTCs were identified in 62% of samples; 83.3% of CTC-positive and 0% of CTC-negative samples were reverse transcriptase-polymerase chain reaction positive for PSA and PSM (P = 0.001). A significant positive correlation was found between the CTC number and PSA (r = 0.49), alkaline phosphatase (r = 0.47), and lactate dehydrogenase (r = 0.55) levels, and a significant negative correlation with hemoglobin (r = -0.35). The initial Gleason grade, prior therapy, current therapy, and type of metastasis (bone, soft tissue) did not correlate significantly with the CTC number. CONCLUSIONS: The presence of intact CTCs and the expression of PSA and PSM demonstrated robust agreement. The tumor cell numbers reflected current disease status and correlated significantly with the clinical disease indicators of PSA, hemoglobin, and liver function tests. These findings warrant further investigation of the diagnostic and prognostic value of enumerating intact CTCs.


Assuntos
Separação Imunomagnética , Células Neoplásicas Circulantes/patologia , Neoplasias da Próstata/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Antígenos de Superfície/análise , Progressão da Doença , Glutamato Carboxipeptidase II/análise , Humanos , Masculino , Pessoa de Meia-Idade , Antígeno Prostático Específico/análise , Neoplasias da Próstata/química
12.
Proc Natl Acad Sci U S A ; 100(11): 6736-40, 2003 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-12748385

RESUMO

The morbidity and mortality associated with impaired/delayed fracture healing remain high. Our objective was to identify a small nonpeptidyl molecule with the ability to promote fracture healing and prevent malunions. Prostaglandin E2 (PGE2) causes significant increases in bone mass and bone strength when administered systemically or locally to the skeleton. However, due to side effects, PGE2 is an unacceptable therapeutic option for fracture healing. PGE2 mediates its tissue-specific pharmacological activity via four different G protein-coupled receptor subtypes, EP1, -2, -3, and -4. The anabolic action of PGE2 in bone has been linked to an elevated level of cAMP, thereby implicating the EP2 and/or EP4 receptor subtypes in bone formation. We identified an EP2 selective agonist, CP-533,536, which has the ability to heal canine long bone segmental and fracture model defects without the objectionable side effects of PGE2, suggesting that the EP2 receptor subtype is a major contributor to PGE2's local bone anabolic activity. The potent bone anabolic activity of CP-533,536 offers a therapeutic alternative for the treatment of fractures and bone defects in patients.


Assuntos
Dinoprostona/agonistas , Consolidação da Fratura/efeitos dos fármacos , Piridinas/farmacologia , Receptores de Prostaglandina E/agonistas , Animais , Desenvolvimento Ósseo , Linhagem Celular , Cães , Humanos , Masculino , Piridinas/sangue , Ratos , Receptores de Prostaglandina E Subtipo EP2
13.
Reprod Suppl ; 60: 155-67, 2002.
Artigo em Inglês | MEDLINE | ID: mdl-12220155

RESUMO

Fertility control offers a potential alternative to traditional methods for regulating the growth of overabundant wild ungulate populations. However, current technology is limited due to practical treatment application, undesirable side-effects and economic considerations. A promising non-steroidal, non-immunological approach to contraception involves the use of a potent GnRH agonist. Two experiments were conducted to evaluate the effectiveness of a GnRH agonist (leuprolide) for controlling fertility in captive female wapiti and to assess physiological and behavioural side-effects of the treatment. In Expt 1, the optimum dose of agonist treatment was determined by measuring serum LH response of eight female wapiti to four formulations of leuprolide (0, 45, 90 and 180 mg) administered as a subcutaneous (s.c.) bioimplant. In Expt 2, the effects of leuprolide on wapiti pregnancy rates, duration of suppression of serum LH and progesterone secretion, and short-term behavioural and physiological side-effects were evaluated. All concentrations of leuprolide in Expt 1 were equally effective in reducing serum LH to non-detectable values throughout the 130 day trial. In Expt 2, leuprolide administered before the breeding season was 100% effective at preventing pregnancy in treated females. Serum LH and progesterone were reduced to baseline values by day 92 and remained at this concentration for 195-251 days after treatment, and returned to pretreatment concentrations in the following breeding season. Reproductive behaviour rates were similar for treated and untreated wapiti for all behaviour categories for both the breeding and post-breeding seasons. Haematology and blood chemistry parameters of treated and un-treated females were similar, and seasonal intake and body weight dynamics appeared normal. In conclusion, leuprolide is a safe, effective contraceptive agent and can potentially suppress fertility in female wapiti for one breeding season.


Assuntos
Anticoncepção/veterinária , Cervos , Hormônio Liberador de Gonadotropina/antagonistas & inibidores , Leuprolida/administração & dosagem , Animais , Comportamento Animal/efeitos dos fármacos , Colorado , Anticoncepção/métodos , Cervos/sangue , Preparações de Ação Retardada , Relação Dose-Resposta a Droga , Feminino , Hormônio Luteinizante/sangue , Controle da População , Gravidez , Progesterona/sangue
14.
Am J Pathol ; 159(6): 2239-48, 2001 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-11733373

RESUMO

Most large bowel cancers are moderately to well-differentiated adenocarcinomas comprised chiefly or entirely of glands lined by tall columnar cells. We have identified a subset of poorly differentiated colon carcinomas with a distinctive histopathological appearance that we term large cell minimally differentiated carcinomas (LCMDCs). These tumors likely include a group of poorly differentiated carcinomas previously described by others as medullary adenocarcinomas. To better understand the pathogenesis of these uncommon neoplasms, we compared molecular features of 15 LCMDCs to those present in 25 differentiated adenocarcinomas (DACs) of the colon. Tumors were examined for alterations commonly seen in typical colorectal carcinomas, including increased p53 and beta-catenin immunoreactivity, K-ras gene mutations, microsatellite instability, and loss of heterozygosity of markers on chromosomes 5q, 17p, and 18q. In addition, tumors were evaluated by immunohistochemistry for CDX2, a homeobox protein whose expression in normal adult tissues is restricted to intestinal and colonic epithelium. Markedly reduced or absent CDX2 expression was noted in 13 of 15 (87%) LCMDCs, whereas only 1 of the 25 (4%) DACs showed reduced CDX2 expression (P < 0.001). Nine of 15 (60%) LCMDCs had the high-frequency microsatellite instability phenotype, but only 2 of 25 (8%) DACs had the high-frequency microsatellite instability phenotype (P = 0.002). Our findings provide support for the hypothesis that the molecular pathogenesis of LCMDCs is distinct from that of most DACs. CDX2 alterations and DNA mismatch repair defects have particularly prominent roles in the development of LCMDCs.


Assuntos
Carcinoma de Células Grandes/patologia , Neoplasias do Colo/patologia , Proteínas de Ligação a DNA , Proteínas de Homeodomínio/biossíntese , Repetições de Microssatélites/genética , Transativadores , Proteínas Adaptadoras de Transdução de Sinal , Adenocarcinoma/genética , Adenocarcinoma/metabolismo , Adenocarcinoma/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Fator de Transcrição CDX2 , Carcinoma de Células Grandes/genética , Carcinoma de Células Grandes/metabolismo , Proteínas de Transporte , Cromossomos Humanos Par 17/genética , Cromossomos Humanos Par 18/genética , Cromossomos Humanos Par 5/genética , Neoplasias do Colo/genética , Neoplasias do Colo/metabolismo , Proteínas do Citoesqueleto/análise , Feminino , Genes ras/genética , Humanos , Imuno-Histoquímica , Perda de Heterozigosidade , Masculino , Pessoa de Meia-Idade , Proteína 1 Homóloga a MutL , Proteína 2 Homóloga a MutS , Mutação , Proteínas de Neoplasias/análise , Proteínas Nucleares , Proteínas Proto-Oncogênicas/análise , Proteína Supressora de Tumor p53/análise , beta Catenina
15.
Mutat Res ; 480-481: 71-5, 2001 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-11506800

RESUMO

Antimutator strains are strains that have a lower mutation rate than the wild-type strain. We have reexamined the properties of one reported antimutator strain of Escherichia coli, termed mud [Mol. Gen. Genet. 153 (1977) 87]. This strain contains a temperature-sensitive mutation in the purB gene, leading to adenine-dependent growth at higher temperature. When grown at permissive or semi-permissive temperature in the absence of adenine it displays large reductions in the number of both spontaneous and mutagen-induced mutants (e.g. several hundred-fold for valine-resistant mutants). However, our studies show that strains containing the purB allele generate mutations at the same level as the wild-type strain, and that the apparent antimutator effect is the consequence of the delayed appearance of mutants on the selective plates. This delay likely results from the combined stress exerted by the adenine deficiency and the presence of the selective agent (i.e. valine).


Assuntos
Escherichia coli/genética , Mutação/genética , Adenilossuccinato Liase/genética , Alelos , Análise Mutacional de DNA , DNA Bacteriano/genética , Escherichia coli/efeitos dos fármacos , Frequência do Gene , Fenótipo , Temperatura , Fatores de Tempo , Valina/farmacologia
16.
J Urol ; 166(3): 958-61, 2001 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11490254

RESUMO

PURPOSE: Patients considering radical prostatectomy often inquire as to when they can expect to regain urinary continence. However, there is a paucity of patient self-reported data regarding the recovery of continence during the initial 3 months after surgery. Our objectives were to assess urinary continence changes early in the postoperative period and determine which of 2 commonly used definitions of continence more closely relate to patient reported urinary impairment. MATERIALS AND METHODS: A prospective study of 90 men with clinically localized prostate cancer who selected radical prostatectomy as primary therapy was conducted. Repeated measures of urinary continence as defined by 1) total urinary control, 2) the use of 1 or 0 pads daily, and 3) small or no problem with urinary function were obtained with a brief survey preoperatively and postoperatively. RESULTS: At 56 days after removal of urethral catheters, the actuarial rates of urinary continence recovery based on definitions 1 to 3 were 43%, 84% and 82%, respectively. The use of definition 2 for continence resulted in a 1.9 times higher actuarial rate for continence recovery when compared to definition 1 at 56 days (p <0.001). However, strong agreement was observed between definitions 2 and 3 (kappa = 0.69). CONCLUSIONS: Urinary control is recovered in a significant proportion of men who undergo radical prostatectomy during the initial 3 months. Continence rates will vary significantly based on the use of alternative definitions. The clinical practice of asking patients how many pads daily they use may be valid, as it corresponds well to the impairment they have.


Assuntos
Prostatectomia/efeitos adversos , Incontinência Urinária/etiologia , Idoso , Humanos , Masculino , Estudos Prospectivos , Neoplasias da Próstata/cirurgia , Fatores de Tempo , Incontinência Urinária/diagnóstico , Incontinência Urinária/epidemiologia
17.
J Clin Oncol ; 19(11): 2844-50, 2001 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-11387356

RESUMO

PURPOSE: Melanoma is the fastest growing solid tumor among men and women and accounts for 79% of skin cancer-related deaths. Research has identified that distress is frequently associated with a diagnosis of cancer and may slow treatment-seeking and recovery, increasing morbidity and even mortality through faster disease course. Given that the 5-year survival rates for individuals with melanoma are determined primarily by the depth and extent of spread, distress that interferes with seeking treatment has the potential to be life-threatening. PATIENTS AND METHODS: The current study was designed to identify levels of distress present in individuals seeking treatment at a large, Midwestern, multidisciplinary melanoma clinic. It also focused on determining the quality of life, level of anxiety, and coping strategies used by individuals with melanoma before treatment. Given that the course of treatment and outcome for patients with stage IV disease is vastly different from that of patients with stages I to III disease, they were excluded from the study. RESULTS: Results indicated that most individuals who are presenting to a melanoma clinic do not report a clinically significant level of distress. However, there is some variability in this, with 29% of patients reporting moderate to high levels of distress. Moreover, analyses suggest that distressed individuals are more likely to use maladaptive coping strategies, such as escape-avoidance coping, and to have poorer quality of life. CONCLUSION: Although most individuals do not present with significant levels of distress, a significant minority are distressed and rely more heavily on coping strategies that do not benefit them. Such individuals would likely benefit most from psychological intervention.


Assuntos
Adaptação Psicológica , Comportamentos Relacionados com a Saúde , Melanoma/psicologia , Neoplasias Cutâneas/psicologia , Estresse Psicológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Ansiedade , Diagnóstico Diferencial , Feminino , Humanos , Masculino , Melanoma/patologia , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Qualidade de Vida , Neoplasias Cutâneas/patologia
18.
J Occup Environ Med ; 43(2): 101-9, 2001 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-11227627

RESUMO

The cost of mental illness to employers has been well documented; however, efforts to effectively reduce the costs of psychiatric disability are adversely affected by the fragmentation of health care services. This report is a case study of a program in which a managed behavioral health care organization managed the psychiatric disability of a telecommunications company. Compared with a non-random cohort of claimants not managed under the pilot, the duration of disability was reduced by 23% (17.1 days). Patient and provider satisfaction with the program was high. This study illustrates the potential for effectively reducing the cost of psychiatric disability and the challenges in coordinating health care.


Assuntos
Programas de Assistência Gerenciada/organização & administração , Serviços de Saúde Mental/organização & administração , Serviços de Saúde do Trabalhador/organização & administração , Adulto , Avaliação da Deficiência , Gerenciamento Clínico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Satisfação do Paciente , Projetos Piloto , Avaliação de Programas e Projetos de Saúde , Estados Unidos
19.
J Occup Environ Med ; 42(11): 1060-9, 2000 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11094784

RESUMO

There is a general lack of health-related research focusing on gender-specific differences within a working population. This research attempts to address that void. Our study relied on the Health Enhancement Research Organization (HERO) database, which consists of claims, enrollment information, and health risk data for 39,999 employees of six large employers. The research objective was to determine the gender-specific association between coronary heart disease (CHD) and (1) the prevalence of modifiable health risks and (2) medical expenditures. To accomplish this, the International Classification of Diseases, 9th Revision-Clinical Modification and Current Procedural Terminology codes were used to identify 2452 employees with CHD within the HERO database. These individuals made up the study group, which included 66% male and 34% female participants. Health risk data were obtained from voluntary participation in a health risk appraisal and biometric evaluation provided by the employers. Health risks evaluated were tobacco use, hypertension, obesity, elevated cholesterol, high blood glucose, sedentary lifestyle, stress, depression, and excessive use of alcohol. Descriptive and multivariate statistical techniques were used to analyze the HERO database. We found that obesity was the most consistent predictor of CHD. It was number one (of 10 health risks) in the male and female group, number two in the male-only group, and number one in the female-only group. High stress was the second most consistent predictor. There was no such consistency relative to medical expenditures. This lack of consistency across the male and female groups relative to the association between health risks and medical expenditures was demonstrated for nearly all other health risks evaluated. This study suggests that within a group of employees with CHD, there are important similarities and differences between men and women with respect to the prevalence of risk factors and the association between health risks and medical expenditures.


Assuntos
Doença das Coronárias/etiologia , Comportamentos Relacionados com a Saúde , Gastos em Saúde/estatística & dados numéricos , Adulto , Doença das Coronárias/epidemiologia , Feminino , Humanos , Estilo de Vida , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Prevalência , Fatores de Risco , Fatores Sexuais
20.
Int J Radiat Oncol Biol Phys ; 48(3): 629-33, 2000 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-11020557

RESUMO

PURPOSE: To study the significance, in terms of overall and cause-specific survival, of biochemical failure after conformal external-beam radiation therapy (RT) for prostate cancer. METHODS AND MATERIALS: Of the 1844 patients in the Radiation Oncology prostate cancer database, 718 were deemed eligible. Patients excluded were those with N1 or M1 disease, those treated after radical prostatectomy, those who received hormone therapy before radiation therapy, and those who died, failed clinically, or had no PSA response in the first 6 months after RT. Patients included were required to have a minimum of 2 post-RT PSAs separated by at least 1 week. Biochemical relapse was defined as 3 consecutive PSA rises. This resulted in 154 patients with biochemical failure. Survival was calculated from the third PSA elevation. The rate of rise of PSA was calculated by fitting a regression line to the four rising PSAs on a ln PSA vs. time plot. RESULTS: There were 41 deaths among the 154 patients with failure in 23 of the 41 due to prostate cancer. The overall survival after failure was 58% at 5 years, while the cause-specific failure was 73% at 5 years. Among the 154 failures, several factors were evaluated for an association with overall survival: age at failure, pre-RT PSA, PSA at second rise, PSA nadir, time from RT to failure, time to nadir, Gleason score, T-stage, and rate of rise, both from the nadir and from the beginning of the rise. None of these factors were significantly associated with an increased risk of death. As expected, the group of patients with biochemical failure have significantly worse prognostic factors than those without biochemical failure: median pre-RT PSA 15.9 vs. 9.0 (p < 0.001), and Gleason score of 7 or greater for 48% of subjects vs. 40% (p = 0.1). Relative PSA rise and slope of ln PSA vs. time were associated with cause-specific mortality (p < 0.001 and p = 0.007, respectively). CONCLUSION: Overall survival after conformal radiotherapy for prostate cancer remains high 5 years after biochemical failure. This high survival rate occurs even though the group of patients with biochemical failure has worse than average adverse preradiation prognostic factors. Thus, although biochemical failure can identify patients who have recurrent disease after RT, the ultimate relationship between this endpoint and death remains to be better defined.


Assuntos
Antígeno Prostático Específico/sangue , Neoplasias da Próstata/radioterapia , Idoso , Humanos , Masculino , Recidiva Local de Neoplasia/sangue , Recidiva Local de Neoplasia/mortalidade , Neoplasias da Próstata/sangue , Neoplasias da Próstata/mortalidade , Radioterapia Conformacional , Recidiva , Taxa de Sobrevida , Fatores de Tempo
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