Relationship between CYP3A activity and breast cancer susceptibility in Chinese Han women

Breast cancer is the most frequent type of tumor in women. The main cause of breast cancer remains unknown. Extensive studies have shown that endogenous steroid hormones, especially estrogens, are important in the development and the progression of breast cancer, and the carcinogenesis of estrogens...

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Veröffentlicht in:European journal of clinical pharmacology 2003-09, Vol.59 (5-6), p.471-476
Hauptverfasser: PING HUANG, BING ZHU, WANG, Lian-Sheng, OUYANG, Dong-Sheng, HUANG, Song-Lin, CHEN, Xiao-Ping, ZHOU, Hong-Hao
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container_end_page 476
container_issue 5-6
container_start_page 471
container_title European journal of clinical pharmacology
container_volume 59
creator PING HUANG
BING ZHU
WANG, Lian-Sheng
OUYANG, Dong-Sheng
HUANG, Song-Lin
CHEN, Xiao-Ping
ZHOU, Hong-Hao
description Breast cancer is the most frequent type of tumor in women. The main cause of breast cancer remains unknown. Extensive studies have shown that endogenous steroid hormones, especially estrogens, are important in the development and the progression of breast cancer, and the carcinogenesis of estrogens is related to their major oxidative metabolites, 16alpha-hydroxyestrogens and 4-hydroxyestrogens. CYP3A plays a major role in the 4- and 16alpha-hydroxylation of estrogens. Furthermore, CYP3A is present in human mammary epithelial cells and expressed higher and more frequently in malignant breast cells than in the adjacent normal breast tissue. Hence, it will be significant to perform more work to determine the association between CYP3A activity and breast cancer susceptibility. To evaluate the relationship of CYP3A activity to breast cancer susceptibility in Chinese Han women using the plasma 1-hydroxymidazolam (1-OHMDZ) to midazolam (MDZ) ratio as the marker of CYP3A activity. One hundred and twenty-nine Chinese Han female breast tumor patients and 121 healthy unrelated female volunteers were enrolled in the current study. After an overnight fast, each subject was administered a single oral dose (7.5 mg) of midazolam. Blood samples (5 ml) were drawn at 1 h after the drug administration. The concentration of parent MDZ and its major metabolite 1-OH-MDZ was measured in all the plasma samples using high-performance liquid chromatography. Complete chromatographic data on plasma ratios of 1-OHMDZ to MDZ for 103 cases of breast cancer and 114 controls were available. The plasma concentration ratios of 1-OHMDZ to MDZ were 0.4520+/-0.2318 and 0.3298+/-0.1610 for the malignant cases and the controls, respectively. A higher CYP3A activity was found in the breast cancer cases than in the controls ( P
doi_str_mv 10.1007/s00228-003-0649-4
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The main cause of breast cancer remains unknown. Extensive studies have shown that endogenous steroid hormones, especially estrogens, are important in the development and the progression of breast cancer, and the carcinogenesis of estrogens is related to their major oxidative metabolites, 16alpha-hydroxyestrogens and 4-hydroxyestrogens. CYP3A plays a major role in the 4- and 16alpha-hydroxylation of estrogens. Furthermore, CYP3A is present in human mammary epithelial cells and expressed higher and more frequently in malignant breast cells than in the adjacent normal breast tissue. Hence, it will be significant to perform more work to determine the association between CYP3A activity and breast cancer susceptibility. To evaluate the relationship of CYP3A activity to breast cancer susceptibility in Chinese Han women using the plasma 1-hydroxymidazolam (1-OHMDZ) to midazolam (MDZ) ratio as the marker of CYP3A activity. One hundred and twenty-nine Chinese Han female breast tumor patients and 121 healthy unrelated female volunteers were enrolled in the current study. After an overnight fast, each subject was administered a single oral dose (7.5 mg) of midazolam. Blood samples (5 ml) were drawn at 1 h after the drug administration. The concentration of parent MDZ and its major metabolite 1-OH-MDZ was measured in all the plasma samples using high-performance liquid chromatography. Complete chromatographic data on plasma ratios of 1-OHMDZ to MDZ for 103 cases of breast cancer and 114 controls were available. The plasma concentration ratios of 1-OHMDZ to MDZ were 0.4520+/-0.2318 and 0.3298+/-0.1610 for the malignant cases and the controls, respectively. A higher CYP3A activity was found in the breast cancer cases than in the controls ( P&lt;0.001), and the CYP3A activity of patients with lymph-node metastasis was higher than that of patients without lymph-node metastasis ( P=0.028). CYP3A activity in estrogen receptor or progesterone receptor positive cases was the same as in estrogen receptor or progesterone receptor negative cases ( P=0.124, 0.175). Our results indicate that high CYP3A activity may contribute to breast cancer disease genesis and may promote breast cancer to lymph-node metastasis.</description><identifier>ISSN: 0031-6970</identifier><identifier>EISSN: 1432-1041</identifier><identifier>DOI: 10.1007/s00228-003-0649-4</identifier><identifier>PMID: 12937874</identifier><language>eng</language><publisher>Heidelberg: Springer</publisher><subject>Aryl Hydrocarbon Hydroxylases - genetics ; Aryl Hydrocarbon Hydroxylases - metabolism ; Asian Continental Ancestry Group ; Biological and medical sciences ; Breast cancer ; Breast Neoplasms - ethnology ; Breast Neoplasms - metabolism ; Breast Neoplasms - pathology ; China ; Cytochrome P-450 CYP3A ; Disease Susceptibility ; Female ; Gynecology. Andrology. 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The main cause of breast cancer remains unknown. Extensive studies have shown that endogenous steroid hormones, especially estrogens, are important in the development and the progression of breast cancer, and the carcinogenesis of estrogens is related to their major oxidative metabolites, 16alpha-hydroxyestrogens and 4-hydroxyestrogens. CYP3A plays a major role in the 4- and 16alpha-hydroxylation of estrogens. Furthermore, CYP3A is present in human mammary epithelial cells and expressed higher and more frequently in malignant breast cells than in the adjacent normal breast tissue. Hence, it will be significant to perform more work to determine the association between CYP3A activity and breast cancer susceptibility. To evaluate the relationship of CYP3A activity to breast cancer susceptibility in Chinese Han women using the plasma 1-hydroxymidazolam (1-OHMDZ) to midazolam (MDZ) ratio as the marker of CYP3A activity. One hundred and twenty-nine Chinese Han female breast tumor patients and 121 healthy unrelated female volunteers were enrolled in the current study. After an overnight fast, each subject was administered a single oral dose (7.5 mg) of midazolam. Blood samples (5 ml) were drawn at 1 h after the drug administration. The concentration of parent MDZ and its major metabolite 1-OH-MDZ was measured in all the plasma samples using high-performance liquid chromatography. Complete chromatographic data on plasma ratios of 1-OHMDZ to MDZ for 103 cases of breast cancer and 114 controls were available. The plasma concentration ratios of 1-OHMDZ to MDZ were 0.4520+/-0.2318 and 0.3298+/-0.1610 for the malignant cases and the controls, respectively. A higher CYP3A activity was found in the breast cancer cases than in the controls ( P&lt;0.001), and the CYP3A activity of patients with lymph-node metastasis was higher than that of patients without lymph-node metastasis ( P=0.028). 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The main cause of breast cancer remains unknown. Extensive studies have shown that endogenous steroid hormones, especially estrogens, are important in the development and the progression of breast cancer, and the carcinogenesis of estrogens is related to their major oxidative metabolites, 16alpha-hydroxyestrogens and 4-hydroxyestrogens. CYP3A plays a major role in the 4- and 16alpha-hydroxylation of estrogens. Furthermore, CYP3A is present in human mammary epithelial cells and expressed higher and more frequently in malignant breast cells than in the adjacent normal breast tissue. Hence, it will be significant to perform more work to determine the association between CYP3A activity and breast cancer susceptibility. To evaluate the relationship of CYP3A activity to breast cancer susceptibility in Chinese Han women using the plasma 1-hydroxymidazolam (1-OHMDZ) to midazolam (MDZ) ratio as the marker of CYP3A activity. One hundred and twenty-nine Chinese Han female breast tumor patients and 121 healthy unrelated female volunteers were enrolled in the current study. After an overnight fast, each subject was administered a single oral dose (7.5 mg) of midazolam. Blood samples (5 ml) were drawn at 1 h after the drug administration. The concentration of parent MDZ and its major metabolite 1-OH-MDZ was measured in all the plasma samples using high-performance liquid chromatography. Complete chromatographic data on plasma ratios of 1-OHMDZ to MDZ for 103 cases of breast cancer and 114 controls were available. The plasma concentration ratios of 1-OHMDZ to MDZ were 0.4520+/-0.2318 and 0.3298+/-0.1610 for the malignant cases and the controls, respectively. A higher CYP3A activity was found in the breast cancer cases than in the controls ( P&lt;0.001), and the CYP3A activity of patients with lymph-node metastasis was higher than that of patients without lymph-node metastasis ( P=0.028). CYP3A activity in estrogen receptor or progesterone receptor positive cases was the same as in estrogen receptor or progesterone receptor negative cases ( P=0.124, 0.175). Our results indicate that high CYP3A activity may contribute to breast cancer disease genesis and may promote breast cancer to lymph-node metastasis.</abstract><cop>Heidelberg</cop><cop>Berlin</cop><pub>Springer</pub><pmid>12937874</pmid><doi>10.1007/s00228-003-0649-4</doi><tpages>6</tpages></addata></record>
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subjects Aryl Hydrocarbon Hydroxylases - genetics
Aryl Hydrocarbon Hydroxylases - metabolism
Asian Continental Ancestry Group
Biological and medical sciences
Breast cancer
Breast Neoplasms - ethnology
Breast Neoplasms - metabolism
Breast Neoplasms - pathology
China
Cytochrome P-450 CYP3A
Disease Susceptibility
Female
Gynecology. Andrology. Obstetrics
Humans
Lymphatic Metastasis
Mammary gland diseases
Medical sciences
Midazolam - analogs & derivatives
Midazolam - blood
Midazolam - metabolism
Oxidoreductases, N-Demethylating - genetics
Oxidoreductases, N-Demethylating - metabolism
Receptors, Estrogen - metabolism
Receptors, Progesterone - metabolism
Risk Factors
Tumors
title Relationship between CYP3A activity and breast cancer susceptibility in Chinese Han women
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