Monica Eigelberger - Academia.edu (original) (raw)
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UERJ - Universidade do Estado do Rio de Janeiro / Rio de Janeiro State University
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Papers by Monica Eigelberger
Current Treatment Options in Oncology, 2001
Surgery, 2001
Retinoic acid (RA) has antiproliferative as well as redifferentiating effects in thyroid cancers.... more Retinoic acid (RA) has antiproliferative as well as redifferentiating effects in thyroid cancers. Similar effects have been seen with phenylacetate (PA) therapy. These observations prompted us to evaluate the potential antiproliferative effects of the combination of RA and PA in follicular thyroid cancer. Three follicular cell lines were treated in vitro with varying concentrations of all-trans RA or PA alone or in combination. Growth was measured by dimethyl-thiazol-diphenyltetrazolium bromide assays. RA (1-2.5 micromol/L) and PA (1-10 mmol/L) alone inhibited cell growth in a time- and dose-dependent manner, with maximum effect at 5 days. The combination of RA and PA had synergistic antiproliferative effects. In the FTC-133 cell line, RA alone (2.5 micromol/L) inhibited growth 16% and PA alone (10 mmol/L) inhibited growth 35% versus controls, whereas the combination of the 2 inhibited growth by 60% at 5 days (P < .005). Similar results were seen with FTC-236 and FTC-238 cell lines. Our results support that RA and PA have antiproliferative effects in follicular thyroid cancer and are synergistic. The combination of RA and PA may be beneficial in the treatment of advanced thyroid cancers for which conventional therapy fails or as an adjuvant to radioactive iodine therapy in aggressive tumors.
Endocrinology and Metabolism Clinics of North America, 2000
British Journal of Surgery, 2000
Annals of Surgery, 2004
To determine whether preoperative and postoperative symptoms and outcome differ in patients who m... more To determine whether preoperative and postoperative symptoms and outcome differ in patients who meet or fail to meet the NIH criteria for parathyroidectomy. The NIH Consensus Conference on primary hyperparathyroidism in 1990 defined criteria for surgical intervention suggesting that some patients can be safely managed without surgery. Over a 3-year period, 202 consecutive patients undergoing parathyroidectomy for primary hyperparathyroidism at a tertiary referral center were prospectively given a questionnaire regarding their symptoms and associated conditions during their initial and follow-up office visits as were 63 thyroid control patients. The 178 patients who completed the follow-up questionnaire were assigned to 2 groups according to the NIH criteria for parathyroidectomy. The frequency of preoperative symptoms and conditions associated with primary hyperparathyroidism as well as postoperative improvement in symptoms and surgical outcome were compared. Of the 178 parathyroid patients, 103 met the NIH criteria for parathyroidectomy whereas 75 did not. Patient profiles were similar in each group except mean ages, 55 versus 65, and preoperative serum calcium levels, 11.5 mg/dL versus 11.0 mg/dL (NIH and non-NIH groups, respectively; P &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.001). The incidence of preoperative nonspecific somatic and neuropsychiatric symptoms and associated conditions was equivalent in both groups and more common than in the 63 thyroid control patients. After parathyroidectomy, symptomatic improvement was dramatic and equal between the 2 parathyroid groups. Postoperative mean serum calcium levels were similar (8.78 mg/dL, NIH group, versus 8.75 mg/dL, non-NIH group). Symptoms were more common in patients with primary hyperparathyroidism versus thyroid controls, but were not different between those patients who met the NIH criteria for parathyroidectomy and those who did not. Patients in both parathyroid groups benefited symptomatically after successful parathyroidectomy.
Current Treatment Options in Oncology, 2001
Surgery, 2001
Retinoic acid (RA) has antiproliferative as well as redifferentiating effects in thyroid cancers.... more Retinoic acid (RA) has antiproliferative as well as redifferentiating effects in thyroid cancers. Similar effects have been seen with phenylacetate (PA) therapy. These observations prompted us to evaluate the potential antiproliferative effects of the combination of RA and PA in follicular thyroid cancer. Three follicular cell lines were treated in vitro with varying concentrations of all-trans RA or PA alone or in combination. Growth was measured by dimethyl-thiazol-diphenyltetrazolium bromide assays. RA (1-2.5 micromol/L) and PA (1-10 mmol/L) alone inhibited cell growth in a time- and dose-dependent manner, with maximum effect at 5 days. The combination of RA and PA had synergistic antiproliferative effects. In the FTC-133 cell line, RA alone (2.5 micromol/L) inhibited growth 16% and PA alone (10 mmol/L) inhibited growth 35% versus controls, whereas the combination of the 2 inhibited growth by 60% at 5 days (P < .005). Similar results were seen with FTC-236 and FTC-238 cell lines. Our results support that RA and PA have antiproliferative effects in follicular thyroid cancer and are synergistic. The combination of RA and PA may be beneficial in the treatment of advanced thyroid cancers for which conventional therapy fails or as an adjuvant to radioactive iodine therapy in aggressive tumors.
Endocrinology and Metabolism Clinics of North America, 2000
British Journal of Surgery, 2000
Annals of Surgery, 2004
To determine whether preoperative and postoperative symptoms and outcome differ in patients who m... more To determine whether preoperative and postoperative symptoms and outcome differ in patients who meet or fail to meet the NIH criteria for parathyroidectomy. The NIH Consensus Conference on primary hyperparathyroidism in 1990 defined criteria for surgical intervention suggesting that some patients can be safely managed without surgery. Over a 3-year period, 202 consecutive patients undergoing parathyroidectomy for primary hyperparathyroidism at a tertiary referral center were prospectively given a questionnaire regarding their symptoms and associated conditions during their initial and follow-up office visits as were 63 thyroid control patients. The 178 patients who completed the follow-up questionnaire were assigned to 2 groups according to the NIH criteria for parathyroidectomy. The frequency of preoperative symptoms and conditions associated with primary hyperparathyroidism as well as postoperative improvement in symptoms and surgical outcome were compared. Of the 178 parathyroid patients, 103 met the NIH criteria for parathyroidectomy whereas 75 did not. Patient profiles were similar in each group except mean ages, 55 versus 65, and preoperative serum calcium levels, 11.5 mg/dL versus 11.0 mg/dL (NIH and non-NIH groups, respectively; P &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.001). The incidence of preoperative nonspecific somatic and neuropsychiatric symptoms and associated conditions was equivalent in both groups and more common than in the 63 thyroid control patients. After parathyroidectomy, symptomatic improvement was dramatic and equal between the 2 parathyroid groups. Postoperative mean serum calcium levels were similar (8.78 mg/dL, NIH group, versus 8.75 mg/dL, non-NIH group). Symptoms were more common in patients with primary hyperparathyroidism versus thyroid controls, but were not different between those patients who met the NIH criteria for parathyroidectomy and those who did not. Patients in both parathyroid groups benefited symptomatically after successful parathyroidectomy.