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Dive into the research topics where Donald Maier is active.

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Featured researches published by Donald Maier.


Fertility and Sterility | 1986

Comparison of real-time ultrasonography, hysterosalpingography, and laparoscopy/hysteroscopy in the evaluation of uterine abnormalities and tubal patency *

John R. Randolph; Yu Kang Ying; Donald Maier; Cecilia L. Schmidt; Daniel H. Riddick

In a study to assess real-time ultrasonography (US) as an alternative to hysterosalpingography (HSG) in the evaluation of uterine abnormalities and tubal patency, 61 women underwent US immediately before hysteroscopy/laparoscopy. Saline was instilled into the uterus to provide contrast during US. The findings were compared with surgical and preoperative HSG findings. With surgical findings as the standard, US was as accurate (sensitivity 98%, specificity 100%) as HSG (sensitivity 98%, specificity 92%) in demonstrating uterine abnormalities and provided a more complete assessment of the abnormality. US was as accurate (sensitivity 100%, specificity 91%) as HSG (sensitivity 96%, specificity 94%) in demonstrating the presence of tubal patency but less accurate in establishing which tubes were patent. Thus real-time US with fluid instillation provides an accurate alternative to HSG in screening for uterine abnormalities and tubal patency.


The American Journal of Medicine | 1992

The thrombotic diathesis associated with the presence of phospholipid antibodies may be due to low levels of free protein S

Ann L. Parke; Ralph E. Weinstein; Robert Bona; Donald Maier; Frederick J. Walker

PURPOSE To determine if abnormalities in the protein C/protein S anticoagulant system exist in patients with phospholipid antibodies who had the primary clinical complaint of fetal wastage. PATIENTS AND METHODS Eleven patients with fetal wastage and phospholipid antibodies were selected for study. Some patients also gave a history of previous thrombotic events related to oral contraceptives and/or pregnancy, but patients were not selected because of a history of clinical thrombosis. The levels of protein C (chromogenic assay), protein S (both free and bound) (Laurell rocket), and C4b-binding protein (Laurell rocket) were measured, and assays for the presence of antibodies against protein S or protein C were performed. RESULTS Seven of the 11 patients were found to have low levels of free protein S. Total protein S and protein C levels were within the normal range in all patients. Antibodies to protein C and protein S were not found in any patient. These findings suggest that free protein S levels may be abnormally low in some patients with phospholipid antibodies. CONCLUSION Free protein S levels are abnormally low in some patients with phospholipid antibodies, and this abnormality may be a factor contributing to the thrombotic diathesis associated with phospholipid antibodies.


Fertility and Sterility | 1991

Psychological factors related to donor insemination

Susan C. Klock; Donald Maier

OBJECTIVE To survey a sample of couples who had completed therapeutic donor insemination (TDI) regarding several psychological variables. DESIGN Couples who had conceived through TDI in the past 7 years completed a retrospective survey. PARTICIPANTS Thirty-five of seventy couples returned completed questionnaires. MEASURES Demographic questionnaire, TDI, and confidentiality questionnaire (created for this study), Dyadic Adjustment Scale. RESULTS The majority of the subjects told at least one person about the TDI but 81% of subjects who told someone reported that, if they had to do it over again, they would tell no one. Eighty-six percent reported that they have not and will not tell the child. Time from diagnosis to beginning TDI was not correlated with marital adjustment after TDI. Overall, the couples reported average marital adjustment. For both men and women, the biggest concern was the genetic/medical history of the donor. Most couples did not have psychological counseling, but 39% thought it should be mandatory. CONCLUSIONS Retrospectively, most couples regretted telling others about TDI. Most couples do not plan to tell the TDI child about its genetic origin. The major concern about TDI is the genetic and medical background of the donor. Psychological counseling should be available to couples undergoing TDI.


Fertility and Sterility | 1994

A prospective study of donor insemination recipients: secrecy, privacy, and disclosure.

Susan C. Klock; Mary Casey Jacob; Donald Maier

OBJECTIVES To study prospectively the attitudes and behaviors of heterosexual couples undergoing donor insemination. DESIGN Couples undergoing donor insemination completed psychological questionnaires before treatment regarding psychiatric symptoms, self-esteem, marital adjustment, and their attitudes about privacy or disclosure. PARTICIPANTS Forty-one of 82 heterosexual couples participated. MEASURES A donor insemination questionnaire, a self-esteem scale, the Brief Symptom Inventory, and the Dyadic Adjustment scale were used. RESULTS Psychiatric symptoms, self-esteem, and marital adjustment were all in the normal range. The amount of time taken by the couple to decide to do donor insemination was not related to reported psychiatric symptoms, self-esteem, marital adjustment, or marital satisfaction. Ninety-five percent of the couples believed a psychological consultation should be a mandatory part of the donor insemination treatment. The greatest concern the couples had about the donor child was its genetic and medical background. Thirty-eight percent of the couples did tell or planned to tell others about using donor insemination to conceive, and only 27% of the couples planned to tell the child of his or her donor origin. CONCLUSIONS The results of this study support those of others, which have indicated that the majority of donor recipients are psychologically well adjusted and have average marital adjustment. In addition, this prospective study replicated the findings of other retrospective studies, indicating that most donor insemination recipients do not plan to tell the child of his or her donor origin. Additional prospective studies are needed to determine if attitudes and behavior regarding disclosure change over time.


Annals of Internal Medicine | 1989

Intravenous Gamma-Globulin, Antiphospholipid Antibodies, and Pregnancy

Ann L. Parke; Donald Maier; Daniel Wilson; John Andreoli; Mark Ballow

Excerpt To the Editor:In their letter ( 1 ) on the use of intravenous immunoglobulin therapy (IVIG) in pregnant women with antiphospholipid antibodies and a history of fetal loss, Francois and coll...


Reproductive Biomedicine Online | 2006

GnRH agonist to induce oocyte maturation during IVF in patients at high risk of OHSS

L. Engmann; L. Siano; D. Schmidt; J. Nulsen; Donald Maier; C.A. Benadiva

The aim of this retrospective study was to evaluate the effectiveness of gonadotrophin-releasing hormone agonist (GnRHa) to trigger oocyte maturation in patients with polycystic ovarian syndrome (PCOS) or previous high response. The outcome of ovarian stimulation and IVF in patients using GnRHa to trigger oocyte maturation after co-treatment with GnRH antagonist (study group) was compared with patients using human chorionic gonadotrophin (HCG) to trigger oocyte maturation after a dual pituitary suppression protocol with oral contraceptive pill (OCP) and GnRHa overlap (control group). All patients received intramuscular progesterone for luteal support but patients in the study group received additional supplementation with oestradiol patches. The mean number of oocytes, proportion of mature oocytes and fertilization rate were similar between the study and control groups. Implantation rate (38.6% versus 45.1%), clinical pregnancy rate (69.6% versus 60.9%) and delivery rate (62.5% versus 56.5%) were similar in the study and control groups respectively. There was one case of moderate ovarian hyperstimulation syndrome (OHSS) in the control group and none in the study group. GnRHa is effective in triggering oocyte maturation in patients with PCOS or previous high response. Further randomized studies are required to evaluate its effectiveness in the prevention of OHSS in this group of patients.


Biology of Reproduction | 2008

Meiotic Arrest in Human Oocytes Is Maintained by a Gs Signaling Pathway

A. Diluigi; Vanessa N. Weitzman; Margaret C. Pace; L. Siano; Donald Maier; Lisa M. Mehlmann

Abstract In mammalian oocytes, the maintenance of meiotic prophase I arrest prior to the surge of LH that stimulates meiotic maturation depends on a high level of cAMP within the oocyte. In mouse and rat, the cAMP is generated in the oocyte, and this requires the activity of a constitutively active, Gs–linked receptor, GPR3 or GPR12, respectively. To examine if human oocyte meiotic arrest depends on a similar pathway, we used RT-PCR and Western blotting to look at whether human oocytes express the same components for maintaining arrest as rodent oocytes. RNA encoding GPR3, but not GPR12, was expressed. RNA encoding adenylate cyclase type 3, which is the major adenylate cyclase required for maintaining meiotic arrest in the mouse oocyte, was also expressed, as was Gαs protein. To determine if this pathway is functional in the human oocyte, we examined the effect of injecting a function-blocking antibody against Gαs on meiotic resumption. This antibody stimulated meiotic resumption of human oocytes that were maintained at the prophase I stage using a phosphodiesterase inhibitor. These results demonstrate that human oocytes maintain meiotic arrest prior to the LH surge using a signaling pathway similar to that of rodent oocytes.


American Journal of Obstetrics and Gynecology | 1989

Spontaneous uterine rupture during pregnancy after treatment of Asherman's syndrome

Jeffrey L. Deaton; Donald Maier; John Andreoli

The treatment of Ashermans syndrome is often complicated by uterine perforation during hysteroscopic correction. We describe the first reported case of spontaneous uterine rupture with resultant hemorrhage during pregnancy after surgical treatment of Ashermans syndrome. This complication mandates close monitoring of these patients during pregnancy.


Journal of Psychosomatic Obstetrics & Gynecology | 1999

Lesbian couples as therapeutic donor insemination recipients: do they differ from other patients?

Mary Casey Jacob; Susan C. Klock; Donald Maier

Reports were based on 23 lesbian couples seeking therapeutic donor insemination (TDI). Seventeen single women and 14 heterosexual couples with known infertility, due to vasectomy, were recipient controls. No group differences were found on self-esteem, psychiatric symptomatology or dyadic adjustment, except that lesbians reported greater dyadic cohesion than heterosexuals. Lesbians and single women were likely to disclose their use of TDI to others and had planned to disclose this to any child conceived; married couples were divided on this issue. Groups were alike in what they wanted to know about the donor (principally health variables and medical history), and in their concerns about the use of TDI (genetic and medical history). Groups differed in the reasons they elected to use TDI, with lesbian couples and single women choosing TDI affirmatively, and married couples accepting it as a last resort.


Biology of Reproduction | 2009

Maturation, Fertilization, and the Structure and Function of the Endoplasmic Reticulum in Cryopreserved Mouse Oocytes

Vanessa N. Weitzman; Donald Maier; Lisa M. Mehlmann

Abstract Oocyte cryopreservation is a promising technology that could benefit women undergoing assisted reproduction. Most studies examining the effects of cryopreservation on fertilization and developmental competence have been done using metaphase II-stage oocytes, while fewer studies have focused on freezing oocytes at the germinal vesicle (GV) stage, followed by in vitro maturation. Herein, we examined the effects of vitrifying GV-stage mouse oocytes on cytoplasmic structure and on the ability to undergo cytoplasmic changes necessary for proper fertilization and early embryonic development. We examined the endoplasmic reticulum (ER) as one indicator of cytoplasmic structure, as well as the ability of oocytes to develop Ca2+ release mechanisms following vitrification and in vitro maturation. Vitrified GV-stage oocytes matured in culture to metaphase II at a rate comparable to that of controls. These oocytes had the capacity to release Ca2+ following injection of inositol 1,4,5-trisphosphate, demonstrating that Ca2+ release mechanisms developed during meiotic maturation. The ER remained intact during the vitrification procedure as assessed using the lipophilic fluorescent dye DiI. However, the reorganization of the ER that occurs during in vivo maturation was impaired in oocytes that were vitrified before oocyte maturation. These results show that vitrification of GV-stage oocytes does not affect nuclear maturation or the continuity of the ER, but normal cytoplasmic maturation as assessed by the reorganization of the ER is disrupted. Deficiencies in factors that are responsible for proper ER reorganization during oocyte maturation could contribute to the low developmental potential previously reported in vitrified in vitro-matured oocytes.

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J. Nulsen

University of Connecticut Health Center

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C.A. Benadiva

University of Connecticut

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L. Engmann

University of Connecticut

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D. Schmidt

University of Connecticut Health Center

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A. Diluigi

University of Connecticut Health Center

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L. Siano

University of Connecticut Health Center

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John J. Peluso

University of Connecticut Health Center

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E.B. Johnston-MacAnanny

University of Connecticut Health Center

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