281 research outputs found
The storage time of cryopreserved human spermatozoa does not affect pathways involved in fertility
Background Cryopreservation of human spermatozoa is a widely used technique in the assisted reproduction technology laboratory for the storage of gametes for later use, for the fertility preservation and for sperm donation programs. Cryopreservation can cause damage to membrane, cytoskeletal, acrosome and increased oxidative stress, sperm DNA damage and transcriptome changes. To assess the impact of storage time on the transcriptome of frozen human spermatozoa, semen samples were collected from 24 normospermic donors of whom 13 had cryostored semen for a short-time (1 week) and 11 had cryostored semen for a long-time (median 9 years). Results RNA was extracted from each frozen-thawed sperm sample, randomized in pools, and analyzed by microarrays. Five transcripts were in higher abundance in the long-time respect to the short-time storage group. Functional annotation enrichment disclosed that that the length of cryostorage has no effect on critical pathways involved in sperm physiology and function. Conclusions The storage time of cryopreserved human spermatozoa does not affect pathways involved in fertility
Is Letrozole needed for controlled ovarian stimulation in patients with estrogen receptor-positive breast cancer?
Menopausal symptoms in breast cancer survivors on adjuvant endocrine therapy compared with those of menopausal women
Objectives: To compare menopausal symptoms of breast cancer survivors on adjuvant endocrine therapy with those of menopausal women. Study design: In a retrospective nested case-control study menopausal symptoms were compared of breast cancer survivors in pre-, peri- or post-menopause at the time of diagnosis, on tamoxifen or an aromatase inhibitor, plus a gonadotrophin-releasing hormone analogue, if pre- or peri-menopausal, and age-matched control women either in the late peri-menopause, or in surgical or in physiological post-menopause on no hormone replacement therapy. Differences between women on tamoxifen and those on aromatase inhibitors were also evaluated. Weighted and non-weighted t-tests, chi-square tests, and linear or logistic regressions were applied as appropriate. Main outcome measures: Score on the Greene's Climacteric Scale and so of its subscales evaluating vasomotor, anxiety, depression, somatisation and sexuality symptoms. Results: A total of 99 breast cancer survivors (45 on tamoxifen, 54 on aromatase inhibitors) and 554 controls (173 in late perimenopause, 353 in natural and 28 in surgical menopause) were enrolled. The score on the Greene's Climacteric Scale was similar in cases and controls (means f standard deviation) (21.3 f 10.4 vs. 22.8 f 11.5, p = 0.199), as were the subscale scores for vasomotor symptoms, anxiety, and somatisation. The depression score was lower (4.63 f 3.3 vs. 5.98 f 3.8; p = 0.001) in breast cancer survivors on adjuvant endocrine therapy, mainly due to a lower score of-2.132 (95 % confidence interval- 3.858/-0.407; p = 0.016) for users of aromatase inhibitors. The sexuality score was higher (1.76 f 1.1 vs. 1.50 f 1.1, p = 0.011) than in controls. Differences remained significant when corrected for age, menarche, body mass index, menopausal status (peri- or post-), type of menopause (natural, surgical), use of gonadotrophin-releasing hormone analogues, years of amenorrhea, smoking, alcohol use, and for breast radiotherapy, chemotherapy, tamoxifen or aromatase inhibitors. Among breast cancer survivors, women on aromatase inhibitors had lower scores for anxiety (5.75 f 2.5vs.5.75 f 2.5; p = 0.045) and depression (3.89 f 2.5 vs. 5.13 f 3.6; p = 0.046) than women on tamoxifen. Conclusions: In breast cancer survivors, adjuvant therapy induces symptoms similar in type and intensity to those of symptomatic menopausal women. Compared with menopausal women, breast cancer survivors, particularly those on aromatase inhibitors, appear to experience less severe depressive symptoms
Optimizing the "Time to pregnancy" in women with multiple sclerosis: the OPTIMUS Delphi survey
Background: The debate on how to manage women affected by multiple
sclerosis (MS) during reproductive age is still open, as is the issue of fertility in such
patients. Main issue regard the identification of the optimal window for pregnancy
and how to deal with medical therapy before and during conception. The aim of
this Delphi consensus was to collect the opinions of a multidisciplinary group,
involving reproductive medicine specialists and neurologists with experience in
the management of multiple sclerosis women with reproductive desire.
Methods: Four experts plus scientific coordinators developed a questionnaire
distributed online to 10 neurologists and later discussed the responses and
amended a list of statements. The statements were then distributed via an online
survey to 23 neurologists (comprising the first 10), who voted on their level of
agreement/disagreement with each statement. Consensus was achieved if
agreement or disagreement with a statement exceeded 66%.
Results: Twenty-one statements reached consensus after two rounds of voting,
leading to the following main recommendations: (1) Fertility evaluation should
be suggested to wMS, in case of the need to shorten time to pregnancy and before
treatment switch in women on DMTs contraindicated in pregnancy, particularly in
case of highly active disease and age > 35 years. (2) ART should not be discouraged
in wMS, but the use of DMTs until pregnancy confirmation should be suggested;
ART may be considered in order to reduce time to pregnancy in MS women with
a reduced ovarian reserve and/or age > 35 years, but in case of an expected poor
ART prognosis and the need for more than one ART cycle, a switch to a highefficacy DMD before ART should be offered. (3) Oocyte cryopreservation may
be considered in women with reduced ovarian reserve, with unpredictable time
to complete diagnostic workup and achieve disease control; a risk/cost–benefit
analysis must be performed in women >35 years, considering the diminished
ovarian reserve.
Conclusion: This consensus will help MS neurologists to support family planning
in wMS, respecting MS therapeutic needs while also taking into account the safety
and impact of advancing age on fertility
Mitochondrial DNA content in embryo culture medium is significantly associated with human embryo fragmentation
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