ABSTRACT
Objective To investigate the effects of cryptotanshinone and tanshinone Ⅱ A,two major monomer components of tanshinone,on the proliferation,differentiation and lipid synthesis of rat meibomian gland epithelial cells in vitro.Methods The eyelid meibomian gland tissue was isolated from 2-month-old SD rats and co-cultured with 3T3 trophoblasts for 5 days.Cryptotanshinone and tanshinone Ⅱ A were prepared with DMSO into different concentrations.The cells were grouped to 0.125 μmol/L,0.250 μmol/L,0.500 μmol/L,1.250 μmol/L and 2.500 μmol/L drug groups and treated for 48 hours,respectively.Only dimethyl sulfoxide (DMSO) was added in medium in the DMSO control group.The expressions of keratin 14 (K14) and p63 in frozen sections of meibomian gland tissue and clones of meibomian gland cells were detected by immunofluorescence.Real-time fluorescence quantitative PCR was used to assay the relative expression of K16,cell proliferation related antigen 67 (Ki67) and CCAAT enhancer binding protein α (C/EBPcα) in meibomian gland cell clones.Crystal violet staining and oil red staining were used to evaluate the colony formation rate and lipid synthesis of meibomian gland epithelial cells.Results Primary cultured meibomian gland cells were cloned on day 4-5 in vivo,and the cloning area was increased on day 7 after culture,p63 and K14 were positively expressed in clones.Compared with the DMSO control group,the relative expression levels of Ki67 mRNA were significantly elevated in the 0.500 μmol/L,1.250 μmol/L and 2.500 μmol/L cryptotanshinone groups (all at P ＜ 0.05).The relative expressions of Ki67 mRNA in the 0.500 μmol/L and 1.250 μmol/L tanshinone Ⅱ A groups were significantly higher than those in the DMSO control group (all at P＜0.05).No significant difference was found in the relative expression of K16 and C/EBPα mRNA among different concentrations of cryptotanshinone or tanshinone Ⅱ A group (all at P＞0.05).No lipid drop was found in the tarsal gland cell clones;however,the accumulation of lipid was seen in the cell clusters at the margin of the clones by oil red O staining.The average clone formation rate of tarsal gland cells in the 1.250 μ mol/L cryptotanshinone group was (2.55±0.20)％,which was significantly higher than (2.05±0.13)％ in the DMSO control group (t =4.379,P＜0.05).The average clone formation rate of tarsal gland cells in the 1.250 μmol/L tanshinone Ⅱ A group was (2.25±0.20)％,there was no significant difference between 1.250 μmol/L tanshinone Ⅱ A group and DMSO control group (t=1.616,P＞0.05).Conclusions Cryptotanshinone and tanshinone Ⅱ A promote the proliferation of meibomian gland epithelia cells,but play less impacts to lipid synthesis of meibomian gland epithelia cells in vitro.cryptotanshinone promote the clone tormation of meibomian gland epithelia cells.
ABSTRACT
JUSTIFICATIVA E OBJETIVO: No Brasil, ainda que os dados de morbidade sejam escassos, as informações sobre mortalidade em mulheres após a menopausa demonstram a necessidade de mais estudos. Assim, a realização do presente trabalho justifica-se pela busca de intervenções possíveis em fatores de risco cardiovascular modificáveis, considerando mudanças de estilo de vida que levem à alteração, em longo prazo, dos fenômenos cardiovasculares dessa população. O objetivo deste estudo foi comparar o risco cardiovascular em mulheres pré e pós-menopáusicas assistidas em uma unidade de saúde. MÉTODOS: Trata-se de um estudo transversal, retrospectivo, englobando 164 mulheres com média de idade de 60,73±12,60 anos, atendidas pelo Programa de Saúde da Família, no bairro Morrinhos, no Município de Montes Claros (MG). RESULTADOS: Foram apresentadas 50 mulheres na pré-menopausa e 114 mulheres na pós-menopausa. Níveis elevados de colesterol total e de LDL-colesterol foram observados nas mulheres pós-menopáusicas (59,6 e 58,8%, respectivamente), enquanto que os níveis de HDL-colesterol se mostraram inferiores ao considerado ideal em praticamente toda a população estudada (66,0% das mulheres pré-menopáusica e 61,4% das mulheres pós-menopáusicas). Quanto aos níveis de triglicerídeos, estes se apresentaram elevados efetivamente nas mulheres pós-menopáusicas (48,2%). Em relação ao perfil glicídico, apenas 28% das mulheres na pré-menopausa e 31,6% das pós-menopausadas apresentaram glicemia de jejum alterada. Os valores apontados determinam que o grupo das pacientes pós-menopáusicas (Mean Rank 92,60) possui maior risco cardiovascular quando comparado ao grupo das pré-menopáusicas (Mean Rank 59,47). CONCLUSÃO: As mulheres pós-menopáusicas apresentam maior risco de eventos cardiovasculares, conforme o escore de risco de Framingham, ao se comparar com as pré-menopáusicas...
BACKGROUND AND OBJECTIVE: In Brazil, despite scarce data, the information about morbidity and mortality in postmenopausal women demonstrate that further studies are necessary. Thus, this work is warranted by the search for possible interventions for modifiable cardiovascular risk factors, considering lifestyle changes that lead to alteration of the longterm cardiovascular phenomena of this population. The objective of this study was to compare the cardiovascular risk in pre and post-menopausal women who were attented in a health care facility. METHODS: This was a cross-sectional, retrospective study, comprising 164 women with a mean age of 60.73±12.60year, served by the Family Health Program in the District Morrinhos, in the city of Montes Claros (state of Minas Gerais). RESULTS: We presented 50 premenopausal women and 114 postmenopausal women. High levels of total cholesterol and LDL-cholesterol were observed in postmenopausal women (59.6 and 58.8%, respectively), while HDL-cholesterol was lower than that considered optimal in almost all the studied population (66.0% of premenopausal women and 61.4% of postmenopausal women). Regarding the levels of triglycerides, they were really high in postmenopausal women (48.2%). Regarding glucose profile, only 28.0% of premenopausal women and 31.6% of postmenopausal women showed impaired fasting glucose. These numbers show that the group of postmenopausal patients (Mean Rank 92.60) had higher cardiovascular risk compared to the group of premenopausal (Mean Rank 59.47) women. CONCLUSION: Postmenopausal women had increased risk of cardiovascular events, according to the Framingham risk score, when compared with premenopausal women...