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1.
J Radiol Case Rep ; 15(3): 9-18, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34267866

RESUMO

Schwannomas of the prostate are a rare entity and usually diagnosed incidentally following surgical management of presumed benign prostate hyperplasia or prostate adenocarcinoma. We present a case of sporadic periprostatic schwannoma diagnosed in conjunction with multifocal prostate adenocarcinoma on pre-operative multiparametric magnetic resonance imaging.


Assuntos
Adenocarcinoma/diagnóstico , Neurilemoma/diagnóstico , Neoplasias da Próstata/diagnóstico , Adenocarcinoma/diagnóstico por imagem , Idoso , Diagnóstico Diferencial , Humanos , Linfadenopatia/diagnóstico , Imageamento por Ressonância Magnética , Masculino , Neurilemoma/diagnóstico por imagem , Neoplasias da Próstata/diagnóstico por imagem
2.
Hypertension ; 71(6): 1083-1090, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29686001

RESUMO

The relationship between biological sex and aldosterone on blood pressure (BP) is unclear. We hypothesized that sex would modify the interaction between aldosterone and vascular responses to salt intake and angiotensin II (AngII). To test this hypothesis, in 1592 subjects from the well-controlled Hypertensive Pathotype cohort, we compared responses of women and men to chronic (BP and aldosterone levels in response to dietary salt) and acute (BP, renal plasma flow, and aldosterone responses to AngII infusion) manipulations. Women had a 30% higher salt sensitivity of BP than men (P<0.0005) regardless of age or hypertension status, a greater BP response to AngII, and a 15% greater aldosterone response to AngII on both restricted and liberal salt diets (P<0.005). Furthermore, there was an interaction (P=0.003) between sex and aldosterone on BP response to AngII. Women also had a greater (P<0.01) increment in renal plasma flow in response to AngII than men. To assess potential mechanisms for this sex effect, we compared aldosterone responses to AngII or potassium from rat zona glomerulosa cells and observed greater aldosterone production in female than male zona glomerulosa cells basally and in response to both agonists (P<0.0001). In a rodent model of aldosterone-mediated cardiovascular disease induced by increased AngII and low NO, circulating aldosterone levels (P<0.01), myocardial damage (P<0.001), and proteinuria (P<0.05) were greater in female than male rats despite having similar BP responses. Thus, increased aldosterone production likely contributes to sex differences in cardiovascular disease, suggesting that women may be more responsive to mineralocorticoid receptor blockade than men.


Assuntos
Angiotensina II/farmacologia , Pressão Sanguínea/fisiologia , Hipertensão/fisiopatologia , Sistema Renina-Angiotensina/fisiologia , Zona Glomerulosa/metabolismo , Animais , Pressão Sanguínea/efeitos dos fármacos , Modelos Animais de Doenças , Feminino , Humanos , Hipertensão/tratamento farmacológico , Hipertensão/metabolismo , Masculino , Pessoa de Meia-Idade , Ratos , Ratos Wistar , Fatores Sexuais
3.
Zhongguo Zhong Yao Za Zhi ; 43(4): 731-735, 2018 Feb.
Artigo em Chinês | MEDLINE | ID: mdl-29600647

RESUMO

The aim of this research is to investigate the effects of paeoniflorin and menthol on the physiological function of Calu-3 cell membrane during the transport of puerarin. Calu-3 cell was used as the in vitro cell model to simulate nasal mucosa tissues, and the cell membrane fluidity, Na⁺-K⁺-ATPase activity and Ca²âº-ATPase activity were detected by fluorescence recovery after photobleaching(FRAP) and ultramicro enzyme activity testing, in order to explore the mechanism of compatible drugs on promoting puerarin transport. The results showed that when puerarin associated with low, middle and high concentration of menthol or both paeoniflorin and menthol, the fluorescence recovery rate was increased significantly, while Na⁺-K⁺-ATPase activity had no significant change and Ca²âº-ATPase activity was enhanced significantly as compared with puerarin alone. Therefore, it was concluded that menthol had the abilit of promoting the transport and the mechanism might be related to increasing membrane fluidity and activating Ca²âº-ATPase.


Assuntos
ATPases Transportadoras de Cálcio/metabolismo , Glucosídeos/química , Isoflavonas/metabolismo , Fluidez de Membrana , Mentol/química , Monoterpenos/química , ATPase Trocadora de Sódio-Potássio/metabolismo , Linhagem Celular Tumoral , Membrana Celular , Humanos
4.
Am J Hypertens ; 31(1): 124-131, 2017 Dec 08.
Artigo em Inglês | MEDLINE | ID: mdl-28985281

RESUMO

BACKGROUND: Understanding the interactions between genetics, sodium (Na+) intake, and blood pressure (BP) will help overcome the lack of individual specificity in our current treatment of hypertension. This study had 3 goals: expand on the relationship between striatin gene (STRN) status and salt-sensitivity of BP (SSBP); evaluate the status of Na+ and volume regulating systems by striatin risk allele status; evaluate potential SSBP mechanisms. METHODS: We assessed the relationship between STRN status in humans (HyperPATH cohort) and SSBP and on volume regulated systems in humans and a striatin knockout mouse (STRN+/-). RESULTS: The previously identified association between a striatin risk allele and systolic SSBP was demonstrated in a new cohort (P = 0.01). The STRN-SSBP association was significant for the combined cohort (P = 0.003; ß = +5.35 mm Hg systolic BP/risk allele) and in the following subgroups: normotensives, hypertensives, men, and older subjects. Additionally, we observed a lower epinephrine level in risk allele carriers (P = 0.014) and decreased adrenal medulla phenylethanolamine N-methyltransferase (PNMT) in STRN+/- mice. No significant associations were observed with other volume regulated systems. CONCLUSIONS: These results support the association between a variant of striatin and SSBP and extend the findings to normotensive individuals and other subsets. In contrast to most salt-sensitive hypertensives, striatin-associated SSBP is associated with normal plasma renin activity and reduced epinephrine levels. These data provide clues to the underlying cause and a potential pathway to achieve, specific, personalized treatment, and prevention.


Assuntos
Proteínas de Ligação a Calmodulina/genética , Hipertensão/genética , Proteínas de Membrana/genética , Proteínas do Tecido Nervoso/genética , Cloreto de Sódio na Dieta/efeitos adversos , Adulto , Animais , Estudos de Coortes , Feminino , Genótipo , Humanos , Masculino , Camundongos , Camundongos Knockout , Pessoa de Meia-Idade , Polimorfismo Genético/genética , Sódio/metabolismo
5.
J Clin Endocrinol Metab ; 102(11): 4124-4135, 2017 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-28938457

RESUMO

Context: Hypertension in young women is uncommon compared with young men and older women. Estrogen appears to protect most women against hypertension, with incidence increasing after menopause. Because some premenopausal women develop hypertension, estrogen may play a different role in these women. Genetic variations in the estrogen receptor (ER) are associated with cardiovascular disease. ER-ß, encoded by ESR2, is the ER predominantly expressed in vascular smooth muscle. Objective: To determine an association of single nucleotide polymorphisms in ESR2 with salt sensitivity of blood pressure (SSBP) and estrogen status in women. Methods: Candidate gene association study with ESR2 and SSBP conducted in normotensive and hypertensive women and men in two cohorts: International Hypertensive Pathotype (HyperPATH) (n = 584) (discovery) and Mexican American Hypertension-Insulin Resistance Study (n = 662) (validation). Single nucleotide polymorphisms in ESR1 (ER-α) were also analyzed. Analysis conducted in younger (<51 years, premenopausal, "estrogen-replete") and older women (≥51 years, postmenopausal, "estrogen-deplete"). Men were analyzed to control for aging. Results: Multivariate analyses of HyperPATH data between variants of ESR2 and SSBP documented that ESR2 rs10144225 minor (risk) allele carriers had a significantly positive association with SSBP driven by estrogen-replete women (ß = +4.4 mm Hg per risk allele, P = 0.004). Findings were confirmed in Hypertension Insulin-Resistance Study premenopausal women. HyperPATH cohort analyses revealed risk allele carriers vs noncarriers had increased aldosterone/renin ratios. No associations were detected with ESR1. Conclusions: The variation at rs10144225 in ESR2 was associated with SSBP in premenopausal women (estrogen-replete) and not in men or postmenopausal women (estrogen-deplete). Inappropriate aldosterone levels on a liberal salt diet may mediate the SSBP.


Assuntos
Receptor beta de Estrogênio/genética , Hipertensão/genética , Polimorfismo de Nucleotídeo Único , Adolescente , Adulto , Fatores Etários , Idoso , Pressão Sanguínea/efeitos dos fármacos , Pressão Sanguínea/genética , Feminino , Estudos de Associação Genética , Predisposição Genética para Doença , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Fatores Sexuais , Cloreto de Sódio na Dieta/farmacologia , Adulto Jovem
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