Objective To determine the concentration changes of medroxyprogesterone acetate （MPA） in serum and milk in the Chinese lactating women who used Depo Geston Methods Ten postpartum and breastfeeding women received an ...Objective To determine the concentration changes of medroxyprogesterone acetate （MPA） in serum and milk in the Chinese lactating women who used Depo Geston Methods Ten postpartum and breastfeeding women received an injectable contraceptive of Depo Geston （depo medroxyprogesterone acetate, DMPA, 150 mg/ampoule）. Serum and milk samples were collected in the 1^st, 2^st, 4^th, 6^th, 8^th 10^th and 12^th week after contraceptive injection. The concentrations of medroxyprogesterone acetate （MPA） in serum and milk were determined by radioimmunoassay. Results The highest MPA concentration in serum was observed at the 1^st week and then the level of serum MPA decreased obviously at the 2^na and 4^th week. After the 4^th week, the decline of serum MPA level slowed down. The concentration of milk MPA reached the highest level at 1^th week. But at the 2^nd week the average level of MPA in milk dropped by half The MPA concentration in the milk was changed in the range of 5.2-8.3 ng/mL in the following 10 weeks. During observation, the average ratios of concentration and area under curve （AUC） in milk/serum were both 0.55. There was a wide variation in MPA concentrations and ratios of milk/serum between subjects. Conclusion MPA concentrations maintained a certaim level at the 12^th week after DMPA injection. However, whether mather＇s intake of DMPA during feeding period has effect on children＇s growth, espcially pubertal growth, deserves further studies.展开更多
Ovarian cancer 3AO cell line was treated with medroxyprogesterone acetate in vitro. The results showed that medroxyprogesterone acetate inhibited the growth of 3AO cell line. Three days after treatment, significant de...Ovarian cancer 3AO cell line was treated with medroxyprogesterone acetate in vitro. The results showed that medroxyprogesterone acetate inhibited the growth of 3AO cell line. Three days after treatment, significant decrease in colony formation on the soft agar medium and subcutaneous transplant tumor formation in the nude mice were observed, and at the same time, C-erbB_2 expression in part of the 3AO cells decreased as analyzed by flow cytometry and immunohistochemical staining. Electron microscopic examination revealed certain degree of degeneration in part of the cells.展开更多
An immunochemical sol-gel-based immunoaffinity purification (IAP) method for purification and detection of the progestin drug medroxyprogesterone acetate (MPA) was developed. A polyclonal antibody (Ab) for MPA was gen...An immunochemical sol-gel-based immunoaffinity purification (IAP) method for purification and detection of the progestin drug medroxyprogesterone acetate (MPA) was developed. A polyclonal antibody (Ab) for MPA was generated, and two competitive (indirect and direct) sensitive enzyme-linked immunosorbent assays (ELISAs) for its detection were developed and implemented to determine the recovery and efficiency of the sol-gel based IAP method. The detection limits of the assays were 1.4 ± 0.2 ng·mL-1 (n = 4) and 4.0 ± 0.4 ng·mL-1 (n = 25) for the indirect and direct ELISAs, respectively. The Abs did not exhibit cross-reactivity with any other progestin or steroid hormone, with the exception of megestrol acetate, with which the Ab exhibited 76% cross-reactivity. The sol-gel IAP method successfully eliminated serum interference to a degree that enabled ELISA analysis of spiked serum samples. This method was also found fully compatible with subsequent chemical analytical methods, such as liquid chromatography followed by mass spectrometry (LC-MS/MS). The approaches developed in this study form a basis for analysis of MPA in biological samples and may be further used to study population exposure to MPA and to monitor MPA contamination in water samples.展开更多
Young patients with the endometrial cancer IA who desire to preserve fertility, can select the conservative therapy with progestin. However, the therapy involves risks of progression and relapse. We examined immunohis...Young patients with the endometrial cancer IA who desire to preserve fertility, can select the conservative therapy with progestin. However, the therapy involves risks of progression and relapse. We examined immunohistochemical analyses of phosphatase and tension homolog (PTEN) and p53 expressions to predict the early relapse, and pregnancy and delivery. Twenty women with endometrial cancer, FIGO IA (1988) (FIGO staging was essentially defined post-surgically), instead of the pathogical specimen before surgery without myometrial invasion were estimated by MRI under 40 years at Gifu University Hospital, Japan from 1988 to 2009. Patients were treated with medroxyprogesterone acetate (MPA, 400 - 600 mg/day) for 4 - 10 months, with whole wall endometrial curettage performed every four weeks. Response to the therapy, pregnancy, delivery and relapse of disease during follow-up over a 72-month period. Immunohistochemical expression of PTEN and p53 was also evaluated with pregnancy, delivery and relapse rate. All patients had pathological complete remissions within 4 - 10 months. Relapse rate was high (60%) in more than 72 months. Immunohistochemical PTEN retain in tumor cells before MPA treatment (8/10) was significant better correlation with pregnancy and delivery rate than of lost cases (1/5) in non-obese women (P < 0.05). Conservative therapy is feasible in carefully selected young women with endometrial cancer without myometrial invasion. However, the relapse rate was high. In cases who desire to be a pregnant, an earlier infertility treatment may be considered especially for PTEN loss especially in nonobese cases.展开更多
Objective To study the effect of medroxyprogesterone on body weight loss,myelosuppression,anorexia and quality of life(QOL)in patients with advanced neoplasm.Method37patients in group Areceived 200mg domestic medroxyp...Objective To study the effect of medroxyprogesterone on body weight loss,myelosuppression,anorexia and quality of life(QOL)in patients with advanced neoplasm.Method37patients in group Areceived 200mg domestic medroxyprogesterone capsule,three times a day for 4consecutive weeks.37patients in group B received 500mg tablet of import medroxyprogesterone,once a day for 4consecutive weeks.Result Therapeutic effect of domestic and i mport medroxyprogesterone was simi lar of group Aand B in terms of anoxia,body weight loss,QOL(P >0.05).Side effects included abnormal liv er function,edema,and moon shaped f ace.Conclusion Medroxyprogesterone belongs to sup-portive therapy for patients with advanced tumor,which can improve QOL.Therapeutic effect of middle-dose medroxyprogesterone is satisfying.展开更多
Objective To compare bone mineral density （BMD） between users of intramuscular depot medroxyprogesterone acetate（DMPA ） and nonhormonal control subjects. Methods The study included 68 women aged between 25 and 40 ...Objective To compare bone mineral density （BMD） between users of intramuscular depot medroxyprogesterone acetate（DMPA ） and nonhormonal control subjects. Methods The study included 68 women aged between 25 and 40 years using depot medroxyprogesterone acetate for 24 months and 59 women aged between 25 and 40 years using nonhormonal contraception as control subjects. BMD of the lumbar spine and femoral neck were obtained using dual energy X-ray absorptiometry. Results At 24 months of treatment, as compared with baseline, the mean BMD in lumbar spine and femoral neck was decreased by 5.5% and 5.9%, respectively. Lumbar spine and femoral neck BMD in women who used DMPA were significantly decreased compared with the subjects in nonuser （P〈0.001）. Conclusion These results show BMD declined during using DMPA in women aged 25 -40 years old.展开更多
Objective To compare bone mineral density （BMD） between users of intramuscular depot medroxyprogesterone acetate （DMPA） and nonhormonal subjects and evaluated the changes in BMD after discontinuation of DMPA.Metho...Objective To compare bone mineral density （BMD） between users of intramuscular depot medroxyprogesterone acetate （DMPA） and nonhormonal subjects and evaluated the changes in BMD after discontinuation of DMPA.Methods The study included 102 women aged 16-18 years using DMPA for 24 months and 97 same-age nonusers. BMD of the lumbar spine and femoral neck were measured using dual-energy X-ray absorptiometry. The mean BMD values were compared between DMPA users （DMPA group） and nonusers （control group） and the changes of BMD during 36 months after discontinuation of DMPA were observed.Results Mean BMD at the spine and femoral neck did not differ significantly between DMPA group and control group over 12 months, but the BMD values at both anatomical sites were significantly lower in DMPA group than in control group after 24 months treatment. After DMPA discontinuation, the mean BMD values in DMPA users increased substantially. At 24 months after DMPA discontinuation, there were no significant differences between DMPA group and control group. But the values of the lumbar spine and femoral neck BMD in DMPA group were still 1.70% and 1.87%, respectively, below nonusers at 36 months after DMPA discontinuation.Conclusion The use of DMPA for short-term （ ≤12 months） had no significant effects on BMD at spine and femoral neck, but long-term exposure to DMPA had significant loss in BMD in adolescents. Bone loss occurring with DMPA use is reversible after DMPA discontinuation.展开更多
文摘Objective To determine the concentration changes of medroxyprogesterone acetate （MPA） in serum and milk in the Chinese lactating women who used Depo Geston Methods Ten postpartum and breastfeeding women received an injectable contraceptive of Depo Geston （depo medroxyprogesterone acetate, DMPA, 150 mg/ampoule）. Serum and milk samples were collected in the 1^st, 2^st, 4^th, 6^th, 8^th 10^th and 12^th week after contraceptive injection. The concentrations of medroxyprogesterone acetate （MPA） in serum and milk were determined by radioimmunoassay. Results The highest MPA concentration in serum was observed at the 1^st week and then the level of serum MPA decreased obviously at the 2^na and 4^th week. After the 4^th week, the decline of serum MPA level slowed down. The concentration of milk MPA reached the highest level at 1^th week. But at the 2^nd week the average level of MPA in milk dropped by half The MPA concentration in the milk was changed in the range of 5.2-8.3 ng/mL in the following 10 weeks. During observation, the average ratios of concentration and area under curve （AUC） in milk/serum were both 0.55. There was a wide variation in MPA concentrations and ratios of milk/serum between subjects. Conclusion MPA concentrations maintained a certaim level at the 12^th week after DMPA injection. However, whether mather＇s intake of DMPA during feeding period has effect on children＇s growth, espcially pubertal growth, deserves further studies.
文摘Ovarian cancer 3AO cell line was treated with medroxyprogesterone acetate in vitro. The results showed that medroxyprogesterone acetate inhibited the growth of 3AO cell line. Three days after treatment, significant decrease in colony formation on the soft agar medium and subcutaneous transplant tumor formation in the nude mice were observed, and at the same time, C-erbB_2 expression in part of the 3AO cells decreased as analyzed by flow cytometry and immunohistochemical staining. Electron microscopic examination revealed certain degree of degeneration in part of the cells.
文摘An immunochemical sol-gel-based immunoaffinity purification (IAP) method for purification and detection of the progestin drug medroxyprogesterone acetate (MPA) was developed. A polyclonal antibody (Ab) for MPA was generated, and two competitive (indirect and direct) sensitive enzyme-linked immunosorbent assays (ELISAs) for its detection were developed and implemented to determine the recovery and efficiency of the sol-gel based IAP method. The detection limits of the assays were 1.4 ± 0.2 ng·mL-1 (n = 4) and 4.0 ± 0.4 ng·mL-1 (n = 25) for the indirect and direct ELISAs, respectively. The Abs did not exhibit cross-reactivity with any other progestin or steroid hormone, with the exception of megestrol acetate, with which the Ab exhibited 76% cross-reactivity. The sol-gel IAP method successfully eliminated serum interference to a degree that enabled ELISA analysis of spiked serum samples. This method was also found fully compatible with subsequent chemical analytical methods, such as liquid chromatography followed by mass spectrometry (LC-MS/MS). The approaches developed in this study form a basis for analysis of MPA in biological samples and may be further used to study population exposure to MPA and to monitor MPA contamination in water samples.
文摘Young patients with the endometrial cancer IA who desire to preserve fertility, can select the conservative therapy with progestin. However, the therapy involves risks of progression and relapse. We examined immunohistochemical analyses of phosphatase and tension homolog (PTEN) and p53 expressions to predict the early relapse, and pregnancy and delivery. Twenty women with endometrial cancer, FIGO IA (1988) (FIGO staging was essentially defined post-surgically), instead of the pathogical specimen before surgery without myometrial invasion were estimated by MRI under 40 years at Gifu University Hospital, Japan from 1988 to 2009. Patients were treated with medroxyprogesterone acetate (MPA, 400 - 600 mg/day) for 4 - 10 months, with whole wall endometrial curettage performed every four weeks. Response to the therapy, pregnancy, delivery and relapse of disease during follow-up over a 72-month period. Immunohistochemical expression of PTEN and p53 was also evaluated with pregnancy, delivery and relapse rate. All patients had pathological complete remissions within 4 - 10 months. Relapse rate was high (60%) in more than 72 months. Immunohistochemical PTEN retain in tumor cells before MPA treatment (8/10) was significant better correlation with pregnancy and delivery rate than of lost cases (1/5) in non-obese women (P < 0.05). Conservative therapy is feasible in carefully selected young women with endometrial cancer without myometrial invasion. However, the relapse rate was high. In cases who desire to be a pregnant, an earlier infertility treatment may be considered especially for PTEN loss especially in nonobese cases.
文摘Objective To study the effect of medroxyprogesterone on body weight loss,myelosuppression,anorexia and quality of life(QOL)in patients with advanced neoplasm.Method37patients in group Areceived 200mg domestic medroxyprogesterone capsule,three times a day for 4consecutive weeks.37patients in group B received 500mg tablet of import medroxyprogesterone,once a day for 4consecutive weeks.Result Therapeutic effect of domestic and i mport medroxyprogesterone was simi lar of group Aand B in terms of anoxia,body weight loss,QOL(P >0.05).Side effects included abnormal liv er function,edema,and moon shaped f ace.Conclusion Medroxyprogesterone belongs to sup-portive therapy for patients with advanced tumor,which can improve QOL.Therapeutic effect of middle-dose medroxyprogesterone is satisfying.
文摘Objective To compare bone mineral density （BMD） between users of intramuscular depot medroxyprogesterone acetate（DMPA ） and nonhormonal control subjects. Methods The study included 68 women aged between 25 and 40 years using depot medroxyprogesterone acetate for 24 months and 59 women aged between 25 and 40 years using nonhormonal contraception as control subjects. BMD of the lumbar spine and femoral neck were obtained using dual energy X-ray absorptiometry. Results At 24 months of treatment, as compared with baseline, the mean BMD in lumbar spine and femoral neck was decreased by 5.5% and 5.9%, respectively. Lumbar spine and femoral neck BMD in women who used DMPA were significantly decreased compared with the subjects in nonuser （P〈0.001）. Conclusion These results show BMD declined during using DMPA in women aged 25 -40 years old.
基金supported by a grant from the Research Foundation of the Shandong Provincial Population and Committee of Family Planning,Jinan,Shandong,China(No.2012017)
文摘Objective To compare bone mineral density （BMD） between users of intramuscular depot medroxyprogesterone acetate （DMPA） and nonhormonal subjects and evaluated the changes in BMD after discontinuation of DMPA.Methods The study included 102 women aged 16-18 years using DMPA for 24 months and 97 same-age nonusers. BMD of the lumbar spine and femoral neck were measured using dual-energy X-ray absorptiometry. The mean BMD values were compared between DMPA users （DMPA group） and nonusers （control group） and the changes of BMD during 36 months after discontinuation of DMPA were observed.Results Mean BMD at the spine and femoral neck did not differ significantly between DMPA group and control group over 12 months, but the BMD values at both anatomical sites were significantly lower in DMPA group than in control group after 24 months treatment. After DMPA discontinuation, the mean BMD values in DMPA users increased substantially. At 24 months after DMPA discontinuation, there were no significant differences between DMPA group and control group. But the values of the lumbar spine and femoral neck BMD in DMPA group were still 1.70% and 1.87%, respectively, below nonusers at 36 months after DMPA discontinuation.Conclusion The use of DMPA for short-term （ ≤12 months） had no significant effects on BMD at spine and femoral neck, but long-term exposure to DMPA had significant loss in BMD in adolescents. Bone loss occurring with DMPA use is reversible after DMPA discontinuation.
