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1.
Gynecol Oncol ; 175: 41-44, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37321154

RESUMO

OBJECTIVE: The objective of this study was to examine the feasibility and success rate of intraoperative injection of radiotracer and blue dye performed by the surgeon without the use of preoperative lymphoscintigraphy for the detection of sentinel lymph nodes in clinically early stage vulvar cancer. METHODS: All patients with clinically early stage vulvar cancer who underwent attempted sentinel lymph node biopsy using intraoperative injection of Technetium-99 m (99mTc) tracer and blue dye performed by the surgeon after induction of anesthesia at single academic institution from 12/2009 to 5/2022 were identified. Demographic and clinicopathologic variables were collected. Data were compared using descriptive statistics. RESULTS: One hundred sixty-four patients (median age 66.4 years) underwent intraoperative injection of radioactive tracer and dye for sentinel lymph node biopsy. Most patients (n = 156, 95.1%) were white. Squamous cell carcinoma accounted for 138 cases (84.1%), melanoma for 10 (6.1%), extra-mammary invasive Paget's disease for 11 (6.7%), and other histologies for 5 (3%). A majority of cases were stage I disease on final pathology (n = 119, 72.6%). Most patients (n = 117, 71%) had tumors located within 2 cm of the midline and underwent planned bilateral groin assessment, while 47 (29%) had well lateralized lesions and underwent unilateral groin assessment. For the patients undergoing unilateral groin assessment, 44 of 47 (93.6%) had successful unilateral mapping. Of the patients who underwent bilateral groin assessment, 87 of 117 (74.4%) had successful bilateral mapping, and 26 of 117 (22.2%) had successful unilateral mapping. Of the 26 patients who underwent bilateral assessment but only had unilateral mapping, 19 had unilateral mapping to ipsilateral groin but failed contralateral mapping, six had midline lesions with successful mapping to one groin but failed mapping to the other groin, and one had unilateral mapping to the contralateral groin but not ipsilateral groin. The total successful sentinel lymph node mapping rate in this cohort was 86.5% (243/281 total sentinel lymph node attempts). CONCLUSION: In this cohort, the overall success rate of sentinel lymph node mapping and biopsy was 86.5%. The high rate of successful sentinel lymph node mapping supports the use of intraoperative radiotracer and blue dye injection by trained providers.


Assuntos
Linfonodo Sentinela , Neoplasias Vulvares , Feminino , Humanos , Idoso , Biópsia de Linfonodo Sentinela , Neoplasias Vulvares/diagnóstico por imagem , Neoplasias Vulvares/cirurgia , Neoplasias Vulvares/patologia , Linfonodos/patologia , Traçadores Radioativos , Estudos de Viabilidade , Metástase Linfática/patologia , Excisão de Linfonodo , Linfonodo Sentinela/diagnóstico por imagem , Linfonodo Sentinela/cirurgia , Linfonodo Sentinela/patologia
2.
Ear Nose Throat J ; 99(6): NP62-NP63, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31072191

RESUMO

BACKGROUND: The pathogens most commonly associated with acute bacterial rhinosinusitis include Streptococcus pneumonia, Haemophilus influenza, and Moraxella catarrhalis. The pathogens most commonly associated with chronic rhinosinusitis include Staphylococcus aureus and various anaerobic organisms, including Prevotella, Porphyromonas, Fusobacterium, and Peptostreptococcus. This case report illustrates a case of chronic rhinosinusitis associated with the Staphylococcus lentus organism, a well-known animal pathogen that has never been documented in the sinonasal cavity before. METHODS: The medical records of an adult patient who presented to the otolaryngology office were reviewed. The literature available was reviewed. RESULTS: A 62-year-old man presented with chronic rhinosinusitis refractory to medical management. He was taken to the operating room for functional endoscopic sinus surgery and cultures were obtained, which returned positive for Staphylococcus lentus. He had no known animal contacts at home or work. He improved with surgery and appropriate antibiotic therapy. CONCLUSIONS: Staphylococcus lentus has never before been reported as a human pathogen in the sinonasal cavities. Otolaryngologists must routinely obtain cultures of mucus or tissue during sinus surgery in order to ensure appropriate antibiotic treatment after surgery and resolution of patient symptoms.


Assuntos
Rinite/microbiologia , Sinusite/microbiologia , Infecções Estafilocócicas/microbiologia , Staphylococcus , Doença Crônica , Humanos , Masculino , Pessoa de Meia-Idade
3.
Gynecol Oncol ; 152(2): 304-309, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30503049

RESUMO

OBJECTIVE: Evaluate the ability of an office-administered phenotypic frailty assessment to predict chemotherapy tolerance in older adult gynecologic oncology patients, and describe practice patterns for chemotherapy administration in this population. METHODS: Prospective, single-institution cohort study of gynecologic oncology patients 65 or older initiating chemotherapy. Phenotypic frailty testing at an office visit encompassed components of two validated frailty assessments: Fried Score (physical testing and patient response) and FRAIL Scale (patient response only). Patients were followed through three cycles of neoadjuvant chemotherapy or six cycles of adjuvant chemotherapy. Standard statistics examined the relationship of frailty to chemotherapy regimen, ability to complete chemotherapy, and complications. RESULTS: Eighty patients were included, 65% with ovarian and 34% with endometrial cancer. On average 57% of patients were fit, 32% intermediately frail, and 11% frail. 68% received adjuvant chemotherapy versus 32% neoadjuvant. The majority (81%) received IV chemotherapy on a 21-day cycle and 81% initially received a regimen consistent with standard-of-care chemotherapy (SOCC). Age was not associated with receiving SOCC, or tolerance or completion of chemotherapy. Frailty was associated with non-initiation of SOCC in all patients and inability to complete SOCC in adjuvant patients. Complications and regimen alterations were common but were not associated with frailty. CONCLUSIONS: There is a need to develop tools to help physicians predict chemotherapy tolerance among older adult gynecologic oncology patients in order to prevent both under- and over-treatment while minimizing morbidity. However, in this study phenotypic frailty assessment had limited predictive utility. Among adjuvant chemotherapy patients, frailty was associated with inability to complete SOCC and thus may be helpful in selecting patients appropriate for less aggressive chemotherapy regimens.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias do Endométrio/tratamento farmacológico , Fragilidade/diagnóstico , Neoplasias Ovarianas/tratamento farmacológico , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Carboplatina/administração & dosagem , Carboplatina/efeitos adversos , Quimioterapia Adjuvante , Estudos de Coortes , Neoplasias do Endométrio/cirurgia , Feminino , Fragilidade/fisiopatologia , Humanos , Terapia Neoadjuvante , Neoplasias Ovarianas/cirurgia , Paclitaxel/administração & dosagem , Paclitaxel/efeitos adversos , Valor Preditivo dos Testes , Estudos Prospectivos
4.
Int J Gynecol Cancer ; 28(9): 1737-1742, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30358703

RESUMO

OBJECTIVE: Sexual health is important to quality of life; however, the sexual health of gynecologic cancer patients is infrequently and inadequately addressed. We sought to understand patient experiences and preferences for sexual health care to help inform strategies for improvement. METHODS/MATERIALS: An anonymous, cross-sectional survey of outpatient gynecologic cancer patients at a large academic medical center was performed as part of a larger study examining patient and caregiver needs. The survey explored patient-provider discussions about sexuality across 3 domains (experiences, preferences, barriers) and 4 phases of cancer care (diagnosis, treatment, treatment completion, follow-up). Age, relationship status, sexual activity, and cancer type were recorded. RESULTS: Mean age was 63 years. Most patients had ovarian cancer (38%) or endometrial cancer (32%). Thirty-seven percent received treatment within the last month, 55% were in a relationship, and 35% were sexuality active. Thirty-four percent reported sexuality as somewhat or very important, whereas 27% felt that it was somewhat or very important to discuss. Importance of sexuality was associated with age, relationship status, and sexual activity but not cancer type. Fifty-seven percent reported never discussing sexuality. Age was associated with sexuality discussions, whereas relationship status, sexual activity, and cancer type were not. The most common barrier to discussion was patient discomfort. Follow-up was identified as the best time for discussion. Sexuality was most often discussed with a physician or advanced practice provider and usually brought up by the provider. CONCLUSIONS: Demographic predictors of importance of sexuality to the patient are age, relationship status, and sexual activity. Providers primarily use age as a proxy for importance of sexuality; however, relationship status and sexual activity may represent additional ways to screen for patients interested in discussing sexual health. Patient discomfort with discussing sexuality is the primary barrier to sexual health discussions, and awareness of this is key to developing effective approaches to providing sexual health care.


Assuntos
Neoplasias dos Genitais Femininos/terapia , Cuidados Paliativos/métodos , Disfunções Sexuais Psicogênicas/terapia , Saúde Sexual , Sexualidade , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias do Endométrio/fisiopatologia , Neoplasias do Endométrio/psicologia , Neoplasias do Endométrio/terapia , Feminino , Neoplasias dos Genitais Femininos/fisiopatologia , Neoplasias dos Genitais Femininos/psicologia , Humanos , Pessoa de Meia-Idade , Neoplasias Ovarianas/fisiopatologia , Neoplasias Ovarianas/psicologia , Neoplasias Ovarianas/terapia , Preferência do Paciente , Qualidade de Vida , Disfunções Sexuais Psicogênicas/etiologia , Disfunções Sexuais Psicogênicas/fisiopatologia , Disfunções Sexuais Psicogênicas/psicologia
5.
Am J Med Qual ; 33(5): 509-513, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29463092

RESUMO

Super-utilizers account for many emergency department visits (EDV) and hospitalizations. Among Medicare/Medicaid patients, 5% to 10% account for >50% of spending. Little is known about super-utilization in gynecologic oncology. Charts of 64 gynecologic oncology patients with ≥3 EDV and/or admissions over 12 months were reviewed retrospectively. Cancer type distribution was 47% ovarian, 23% cervical, 23% endometrial, and 6% vulvar. Treatment at index visit was 61% chemotherapy, 16% no treatment, 8% recent surgery, and 6% radiation. Mean visits was 5.7 (SD 3.9, range 3-28). Most common presenting complaints were gastrointestinal and pain. Patients near end of life were more likely to be admitted. EDV frequently occurred outside standard work hours (63%). EDV/admissions resulted in total variable expenses of $1 462 581 ($982 933 direct expense, $479 648 service expense). Interventions to decrease super-utilization could target symptom management, off-hour support, patients on chemotherapy, and end of life. Approaches could include multidisciplinary resources, palliative care teams, extending office hours, and earlier initiation of hospice.


Assuntos
Neoplasias dos Genitais Femininos , Mau Uso de Serviços de Saúde , Adulto , Idoso , Idoso de 80 Anos ou mais , Serviço Hospitalar de Emergência/economia , Feminino , Humanos , Auditoria Médica , Pessoa de Meia-Idade , Cuidados Paliativos , Estudos Retrospectivos , Estados Unidos
6.
J Oncol Pract ; 13(9): e712-e720, 2017 09.
Artigo em Inglês | MEDLINE | ID: mdl-28763259

RESUMO

PURPOSE: Concern that patients will react negatively to the idea of palliative care is cited as a barrier to timely referral. Strategies to successfully introduce specialty palliative care to patients have not been well described. We sought to understand how gynecologic oncologists introduce outpatient specialty palliative care. METHODS: We conducted a national qualitative interview study at six geographically diverse academic cancer centers with well-established palliative care clinics between September 2015 and March 2016. Thirty-four gynecologic oncologists participated in semistructured telephone interviews focusing on attitudes, experiences, and practices related to outpatient palliative care. A multidisciplinary team analyzed interview transcripts using constant comparative methods to inductively develop and refine a coding framework. This analysis focuses on practices for introducing palliative care. RESULTS: Mean participant age was 47 years (standard deviation, 10 years). Mean interview length was 25 minutes (standard deviation, 7 minutes). Gynecologic oncologists described the following three main strategies for introducing outpatient specialty palliative care: focus initial palliative care referral on symptom management to dissociate palliative care from end-of-life care and facilitate early relationship building with palliative care clinicians; use a strong physician-patient relationship and patient trust to increase acceptance of referral; and explain and normalize palliative care referral to address negative associations and decrease patient fear of abandonment. These strategies aim to decrease negative patient associations and encourage acceptance of early referral to palliative care specialists. CONCLUSION: Gynecologic oncologists have developed strategies for introducing palliative care services to alleviate patient concerns. These strategies provide groundwork for developing system-wide best practice approaches to the presentation of palliative care referral.


Assuntos
Atitude do Pessoal de Saúde , Neoplasias dos Genitais Femininos/epidemiologia , Oncologia , Cuidados Paliativos , Feminino , Neoplasias dos Genitais Femininos/terapia , Humanos , Pacientes Ambulatoriais , Assistência Terminal
7.
J Int Adv Otol ; 13(2): 279-281, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28816697

RESUMO

This case report documents a rare case of a subgaleal pneumocele occurring more than 20 years after cochlear implantation. On presentation, the presence of air under the scalp followed vigorous nose blowing was observed. The patient was treated conservatively with a pressure dressing, which resulted in complete resolution of the surgical emphysema. Only a handful of such cases have been reported in the literature. Most of these cases occur early after cochlear implantation. Our case is even more unique as it occurred 24 years following implantation and presented with a painless swelling associated with deterioration in cochlear implant performance. A review of the current literature is included in the discussion.


Assuntos
Implante Coclear/efeitos adversos , Pneumocefalia/etiologia , Enfisema Subcutâneo/etiologia , Idoso de 80 Anos ou mais , Feminino , Humanos , Complicações Pós-Operatórias , Fatores de Tempo
8.
Int J Gynecol Cancer ; 27(3): 588-596, 2017 03.
Artigo em Inglês | MEDLINE | ID: mdl-28060140

RESUMO

OBJECTIVE: Early specialty palliative care is underused for patients with advanced gynecologic malignancies. We sought to understand how gynecologic oncologists' views influence outpatient specialty palliative care referral to help inform strategies for improvement. METHODS/MATERIALS: We conducted a qualitative interview study at 6 National Cancer Institute-designated cancer centers with well-established outpatient palliative care services. Between September 2015 and March 2016, 34 gynecologic oncologists participated in semistructured telephone interviews focused on attitudes, experiences, and preferences related to outpatient specialty palliative care. A multidisciplinary team analyzed transcripts using constant comparative methods to inductively develop a coding framework. Through an iterative, analytic process, codes were classified, grouped, and refined into themes. RESULTS: Mean (SD) participant age was 47 (10) years. Mean (SD) interview length was 25 (7) minutes. Three main themes emerged regarding how gynecologic oncologists view outpatient specialty palliative care: (1) long-term relationships with patients is a unique and defining aspect of gynecologic oncology that influences referral, (2) gynecologic oncologists value palliative care clinicians' communication skills and third-party perspective to increase prognostic awareness and help negotiate differences between patient preferences and physician recommendation, and (3) gynecologic oncologists prefer specialty palliative care services embedded within gynecologic oncology clinics. CONCLUSIONS: Gynecologic oncologists value longitudinal relationships with patients and use specialty palliative care to negotiate conflict surrounding prognostic awareness or the treatment plan. Embedding specialty palliative care within gynecologic oncology clinics may promote communication between clinicians and facilitate gynecologic oncologist involvement throughout the illness course.


Assuntos
Assistência Ambulatorial/normas , Atitude do Pessoal de Saúde , Institutos de Câncer/normas , Neoplasias dos Genitais Femininos/terapia , Cuidados Paliativos/normas , Encaminhamento e Consulta , Assistência Ambulatorial/métodos , Feminino , Ginecologia/normas , Humanos , Pessoa de Meia-Idade , Oncologistas , Cuidados Paliativos/métodos
10.
Gynecol Oncol ; 143(2): 367-370, 2016 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-27531571

RESUMO

OBJECTIVE: We sought to compare symptoms identified as a priority by patients with recurrent ovarian cancer to symptoms most frequently documented by their clinicians, and examine the association between clinician documentation of symptoms and subsequent clinical intervention. METHODS: Single-institution, retrospective chart review of patients enrolled in WRITE Symptoms Study (GOG 259), a randomized controlled trial of internet-based recurrent ovarian cancer symptom management. As part of the trial, women completed the Symptom Representation Questionnaire for 28 symptoms and selected 3 priority symptoms (PS). We compared patient-reported PS to clinician documentation of symptoms and interventions over the time period corresponding to study enrollment. RESULTS: At least one PS was documented in 92% of patients. Of 150 PS reported by patients, 53% were never documented by clinicians; these symptoms tended to be less directly related to disease or treatment status. Symptoms not identified by patients as PS were frequently documented by clinicians; these symptoms tended to relate to physiologic effects of disease and treatment toxicity. 58% of patients had at least one PS intervention. PS intervened for were documented at 2.58 visits vs 0.50 visits for PS not receiving intervention (p≤0.0001). CONCLUSIONS: Discordance was identified between symptoms reported by patients as important and symptoms documented by clinicians. Symptoms more frequently documented were also more frequently intervened for. Our study illustrates the need to improve identification of symptoms important to patients, and suggests that improving communication between patients and clinicians could increase intervention rates to enhance quality of life in women with recurrent ovarian cancer.


Assuntos
Recidiva Local de Neoplasia/terapia , Neoplasias Ovarianas/terapia , Adulto , Idoso , Feminino , Humanos , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/psicologia , Neoplasias Ovarianas/psicologia , Qualidade de Vida , Estudos Retrospectivos
11.
J Low Genit Tract Dis ; 20(3): 252-6, 2016 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-26855143

RESUMO

OBJECTIVE: Vulvar squamous cell carcinoma (VSCC) develops through 2 distinct molecular pathways, one involving high-risk human papillomavirus (HPV) infection and the other through early p53 suppressor gene mutation. We sought to evaluate the influence of p53 mutation, HPV status, and p16 expression on local recurrence and disease-specific mortality in early stage VSCC. MATERIALS AND METHODS: We performed a retrospective chart review of all patients with stage I VSCC at the Maine Medical Center from 1998 to 2007 (n = 92). Tumor size, depth of invasion, lymphatic/vascular space invasion, and growth pattern were recorded. Paraffin-embedded tissue blocks were stained by immunohistochemistry for p16 and p53; high-risk HPV was detected by polymerase chain reaction assay. Margin distance was determined by a gynecologic pathologist. Survival analyses were conducted to examine predictors of VSCC recurrence and disease-specific mortality. RESULTS: Age, depth of invasion, lymphatic/vascular space invasion, growth pattern, and margin status were not significant predictors of recurrence or disease-specific mortality. Tumor size of greater than 4.0 cm indicated a 4-fold increase in disease-specific mortality but did not significantly increase recurrence. p16-Positive patients were less likely to recur and had no VSCC-related deaths. Human papillomavirus-positive patients were less likely to recur and had no VSCC-related deaths. p53-positive patients were 3 times more likely to recur and nearly 7 times more likely to die from vulvar cancer. CONCLUSIONS: Our findings suggest that HPV and the surrogate biomarker p16 indicate a less aggressive type of vulvar cancer. p53 positivity was associated with poor prognosis and significantly increased both recurrence and disease-specific mortality.


Assuntos
Biomarcadores/análise , Carcinoma de Células Escamosas/diagnóstico , Inibidor p16 de Quinase Dependente de Ciclina/análise , Testes Diagnósticos de Rotina/métodos , Papillomaviridae/isolamento & purificação , Proteína Supressora de Tumor p53/análise , Neoplasias Vulvares/diagnóstico , Idoso , Idoso de 80 Anos ou mais , Biomarcadores Tumorais/análise , Carcinoma de Células Escamosas/mortalidade , Carcinoma de Células Escamosas/patologia , Feminino , Humanos , Imuno-Histoquímica , Maine , Microscopia , Pessoa de Meia-Idade , Prognóstico , Recidiva , Estudos Retrospectivos , Análise de Sobrevida , Neoplasias Vulvares/mortalidade , Neoplasias Vulvares/patologia
12.
Artigo em Inglês | MEDLINE | ID: mdl-24683484

RESUMO

UNLABELLED: A 55-year-old woman with asthma presented with adrenal insufficiency of unknown origin. She was referred to our Division of Reproductive Endocrinology to further evaluate an undetectable morning cortisol level discovered during the evaluation of a low serum DHEA-S level. She was asymptomatic other than having mild fatigue and weight gain. Her medication list included 220 µg of inhaled fluticasone propionate twice daily for asthma, which she was taking as prescribed. On presentation, the undetectable morning cortisol level was confirmed. A urinary measurement of fluticasone propionate 17ß-carboxylic acid was markedly elevated. Fluticasone therapy was discontinued and salmeterol therapy initiated with supplemental hydrocortisone. Hydrocortisone therapy was discontinued after 2 months. A repeat urinary fluticasone measurement 4 months after the discontinuation of fluticasone therapy was undetectably low and morning cortisol level was normal at 18.0 µg/dl. Inhaled fluticasone is generally considered to be minimally systemically absorbed. This patient's only clinical evidence suggesting adrenal insufficiency was fatigue accompanying a low serum DHEA-S level. This case demonstrates that adrenal insufficiency can be caused by a routine dose of inhaled fluticasone. Missing this diagnosis could potentially result in adrenal crisis upon discontinuation of fluticasone therapy. LEARNING POINTS: Standard-dose inhaled fluticasone can cause adrenal insufficiency.Adrenal insufficiency should be considered in patients taking, or who have recently discontinued, inhaled fluticasone therapy and present with new onset of nonspecific symptoms such as fatigue, weakness, depression, myalgia, arthralgia, unexplained weight loss, and nausea that are suggestive of adrenal insufficiency.Adrenal insufficiency should be considered in postoperative patients who exhibit signs of hypoadrenalism after fluticasone therapy has been withheld in the perioperative setting.Routine screening for hypoadrenalism in patients without clinical signs or symptoms of adrenal insufficiency after the discontinuation of inhaled fluticasone therapy is not indicated due to the apparently low incidence of adrenal insufficiency caused by fluticasone.

13.
J Am Med Inform Assoc ; 20(2): 373-6, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-22759622

RESUMO

Underage alcohol use is the leading cause of preventable mortality among adolescents in the USA. Moreover, the average age of onset of underage drinking is 13 years. This study examined the feasibility of using a text messaging survey (TMS) to assess adolescent alcohol use. A sample of 29 adolescents, aged 13-17 years, was recruited from two primary care clinics. They completed a 16 question TMS while in the waiting room and a two-question exit TMS. The participation rate was 87%. Two out of 25 (8%) adolescents met the criteria for hazardous drinking and 28% reported alcohol use. It was found that 38% and 25% of adolescents who completed the exit TMS were asked or advised about drinking, respectively. Text messaging to assess adolescent alcohol use in this setting seems feasible, does not disrupt patient workflow, and can assess many health behaviors before a clinical encounter.


Assuntos
Consumo de Bebidas Alcoólicas/prevenção & controle , Transtornos Relacionados ao Uso de Álcool/prevenção & controle , Comportamentos Relacionados com a Saúde , Programas de Rastreamento/métodos , Envio de Mensagens de Texto , Adolescente , Estudos de Viabilidade , Feminino , Humanos , Masculino , Projetos Piloto , Atenção Primária à Saúde , Inquéritos e Questionários , Estados Unidos
14.
Artigo em Inglês | MEDLINE | ID: mdl-16809069

RESUMO

The effects of exogenous glycine on homocysteine (HoCys)-induced reductions in chick (Gallus gallus) embryo viability, HoCys-induced increases in brain and hepatic membrane lipid peroxidation, HoCys-induced apoptosis (caspase-3 activities) in brain and hepatic tissues, and HoCys-induced reductions in brain and hepatic S-adenosylemethionine (SAM)/S-adenosylhomocysteine (SAH) levels were studied. Exogenous HoCys caused reductions in percent living embryos and reductions in embryo masses. Exogenous glycine attenuated these HoCys-induced reductions in embryo viability. Brain and liver tissues of HoCys-treated embryos exhibited increased caspase-3 activities, increased lipid hydroperoxide (LPO) levels, and reduced levels of long-chain polyunsaturated membrane fatty acids. While exogenous glycine attenuated HoCys-induced changes in brain caspase-3 activities, brain LPO levels, and brain membrane PUFA levels, exogenous glycine was less effective in attenuating HoCys-induced changes in hepatic caspase-3 activities and hepatic membrane PUFA levels. HoCys-induced reductions in SAM/SAH ratios were observed in brains and livers. Exogenous glycine attenuated HoCys-induced reductions in brain SAM/SAH. However, glycine was unable to attenuate HoCys-induced reductions in hepatic SAM/SAH levels.


Assuntos
Apoptose/efeitos dos fármacos , Encéfalo/efeitos dos fármacos , Glicina/farmacologia , Homocisteína/toxicidade , Fígado/efeitos dos fármacos , Animais , Encéfalo/embriologia , Encéfalo/metabolismo , Química Encefálica/efeitos dos fármacos , Caspase 3 , Caspases/metabolismo , Embrião de Galinha , Ácidos Graxos/análise , Homocisteína/análise , Peróxidos Lipídicos/análise , Fígado/embriologia , Fígado/metabolismo , Membranas/efeitos dos fármacos , Membranas/metabolismo , S-Adenosil-Homocisteína/análise , S-Adenosilmetionina/análise
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