Publications by authors named "M Ghazzi"

Identifying the cellular origins and mapping the dendritic and axonal arbors of neurons have been century old quests to understand the heterogeneity among these brain cells. Current Brainbow based transgenic animals take the advantage of multispectral labeling to differentiate neighboring cells or lineages, however, their applications are limited by the color capacity. To improve the analysis throughput, we designed Bitbow, a digital format of Brainbow which exponentially expands the color palette to provide tens of thousands of spectrally resolved unique labels.

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Context: Polycystic ovary syndrome (PCOS) and the metabolic syndrome have many features in common and may share the same pathogenesis.

Objective: This study was performed to determine the prevalence and predictors of the metabolic syndrome in PCOS.

Design: The clinical, hormonal, and oral glucose tolerance test results were analyzed in 394 PCOS women who were screened for participation in a multicenter trial to evaluate the effects of troglitazone on ovulation and hirsutism.

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Racial origin and family history of type 2 diabetes impact upon the risk of developing impaired glucose tolerance (IGT) and type 2 diabetes, both of which are common in women with polycystic ovary syndrome (PCOS). We examined the effects of race and family history of type 2 diabetes on the risk of IGT and type 2 diabetes in a large cohort of women with PCOS. Data obtained at baseline were analyzed from 408 premenopausal women with PCOS.

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We hypothesized that the administration of troglitazone (TGZ), an insulin-sensitizing agent of the thiazolidinedione class, would improve dyslipidemia associated with insulin resistance in polycystic ovary syndrome (PCOS). Three hundred and ninety-eight women with PCOS in a multicenter, double-blind trial were randomly assigned to 44 wk of treatment with: placebo or troglitazone (150, 300, or 600 mg/d). We examined the responses of circulating lipid and lipoproteins [total cholesterol, high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C), and triglycerides (TTG)] by treatment arm, and the influence of glycemic parameters on baseline levels and response to treatment.

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Article Synopsis
  • The study aimed to see if the insulin sensitizer troglitazone (TGZ) could lower levels of adrenal androgens, specifically DHEAS, in women with polycystic ovary syndrome (PCOS) who have insulin resistance.
  • Conducted as a randomized, double-blind clinical trial with 305 participants, the study compared the effects of various doses of TGZ against a placebo over 20 weeks.
  • Results showed that increased TGZ dosage led to a significant decrease in DHEAS levels and insulin, suggesting that treating insulin resistance in PCOS can effectively lower androgen levels.
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