229 results match your criteria vitrification administration


A Roadmap to Cardiac Tissue-Engineered Construct Preservation: Insights from Cells, Tissues, and Organs.

Adv Mater 2021 May 28:e2008517. Epub 2021 May 28.

Department of Cardiology, Experimental Cardiology Laboratory, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, Utrecht, 3584 CX, The Netherlands.

Worldwide, over 26 million patients suffer from heart failure (HF). One strategy aspiring to prevent or even to reverse HF is based on the transplantation of cardiac tissue-engineered (cTE) constructs. These patient-specific constructs aim to closely resemble the native myocardium and, upon implantation on the diseased tissue, support and restore cardiac function, thereby preventing the development of HF. Read More

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Intramuscular progesterone optimizes live birth from programmed frozen embryo transfer: a randomized clinical trial.

Fertil Steril 2021 May 12. Epub 2021 May 12.

Shady Grove Fertility, Rockville, Maryland.

Objective: To determine whether vaginal progesterone for programmed endometrial preparation is noninferior to intramuscular progesterone in terms of live birth rates from frozen embryo transfer (FET).

Design: Three-armed, randomized, controlled noninferiority trial.

Setting: Multicenter fertility clinic. Read More

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Effect of resveratrol on mouse ovarian vitrification and transplantation.

Reprod Biol Endocrinol 2021 Apr 9;19(1):54. Epub 2021 Apr 9.

State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, China.

Background: After ovarian tissue transplantation, ischemia-reperfusion injury and free radicals cause follicle depletion and apoptosis. Therefore, the use of antioxidants to reduce the production of free radicals is an important method to address the consequences of ischemia-reperfusion injury. Resveratrol is a natural active polyphenol compound with anti-inflammatory, antitumor, strong antioxidant and anti-free radical properties. Read More

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Investigating the impact of different strategies for endometrial preparation in frozen cycles considering normal responders undergoing IVF/ICSI cycles: a multicenter retrospective cohort study.

Syst Biol Reprod Med 2021 Jun 16;67(3):201-208. Epub 2021 Mar 16.

Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece.

Uncertainty exists concerning the type, adjunct, or dose of regimen to offer in frozen cycles in infertile women undergoing IVF/ICSI. Current systematic reviews have failed to identify one method of endometrial preparation as being more effective than another, whereas many IVF Units use variable and mixed protocols mainly based on their experience and convenience of use. Thus, we performed a four-center two-arm retrospective cohort study, encompassing 439 cycles in 311 women. Read More

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Seven Years of Vitrified Blastocyst Transfers: Comparison of 3 Preparation Protocols at a Single ART Center.

Front Endocrinol (Lausanne) 2020 29;11:346. Epub 2020 May 29.

Yale University Fertility Center, New Haven, CT, USA.

Frozen-thawed embryo transfers (FET) have become a standard practice to increase cumulative pregnancy rates, however, the choice of the best preparation protocol remains a matter of debate. Retrospective analysis of clinical pregnancy (CPR) and live birth rate (LBR) of FET in natural cycles (NC-FET), modified natural cycles with hCG-triggered ovulation (mNC-FET), and hormonal artificial replacement (AR-FET). For natural cycles, patients were monitored by ultrasound to evaluate the dominant follicle and by urinary LH kits (NC-FET). Read More

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Addition of intramuscular progesterone to vaginal progesterone in hormone replacement therapy in vitrified-warmed blastocyst transfer cycles.

Reprod Biomed Online 2020 Jun 15;40(6):812-818. Epub 2020 Feb 15.

Anatolia IVF and Women Health Centre, Cinnah Cad. No 54 Cankaya, 06690, Ankara, Turkey; Hacettepe University School of Medicine, Department of Obstetrics and Gynecology, Sihhiye 06100, Ankara, Turkey. Electronic address:

Research Question: Does intramuscular progesterone supplementation ensure ongoing pregnancy rates (OPR) comparable with vaginal progesterone only in hormone replacement therapy cycles for vitrified-warmed embryo transfer; and is there a window of serum progesterone concentration out of which reproductive outcomes may be negatively affected?

Design: Retrospective longitudinal cohort study carried out at a single IVF clinic. In total, 475 consecutive, day-5 to day-6 vitrified-warmed embryo transfer cycles using hormone replacement therapy regimen were included. Vaginal progesterone only was given to 143 patients; supplementation of vaginal progesterone only with intramuscular progesterone supplementation every third day was given to 332 patients. Read More

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Dimethyl sulfoxide-free cryopreservation for cell therapy: A review.

Cryobiology 2020 06 2;94:9-17. Epub 2020 Apr 2.

Sana Biotechnology, Inc., Cambridge, MA, 02139, United States.

Cell-based therapeutics promise to transform the treatment of a wide range of diseases including cancer, genetic and degenerative disorders, or severe injuries. Many of the commercial and clinical development of cell therapy products require cryopreservation and storage of cellular starting materials, intermediates and/or final products at cryogenic temperature. Dimethyl sulfoxide (MeSO) has been the cryoprotectant of choice in most biobanking situations due to its exceptional performance in mitigating freezing-related damages. Read More

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Exogenous luteinizing hormone promotes ovarian survival and function during cryopreservation and transplantation.

Biochem Biophys Res Commun 2020 05 27;526(2):424-430. Epub 2020 Mar 27.

Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Department II of Surgical Oncology, Ningxia Medical University, Yinchuan, 750004, China. Electronic address:

Cryopreservation and transplantation of the ovarian tissue is an alternative method by which malignant tumor survivors can recover fertility. Previously, it was reported that follicle stimulating hormone (FSH) promoted the survival and functioning of the ovarian tissue after in vitro cultivation. In this study, the expression of the luteinizing hormone receptor (LHR) was observed on the granule cell membrane after luteinizing hormone (LH) (0. Read More

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Hydroxypropyl beta cyclodextrin: a water-replacement agent or a surfactant upon spray freeze-drying of IgG with enhanced stability and aerosolization.

Drug Dev Ind Pharm 2020 Mar 17;46(3):403-411. Epub 2020 Feb 17.

Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.

The great potential of hydroxypropyl beta-cyclodextrin (HPßCD), as a dried-protein stabilizer, has been attributed to various mechanisms namely water-replacement, vitrification and surfactant-like effects. Highlighting the best result in our previous study (weight ratio IgG: HPßCD of 1:0.4), herein we designed to evaluate the efficacy of upper (1:2) and lower (1:0. Read More

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Equivalent live-birth rate in antagonist IVF/ICSI protocol after oocyte triggering with GnRH agonist supplemented with 1500 r-hCG the day of oocyte retrieval vs r-hCG : A case-control study.

J Gynecol Obstet Hum Reprod 2020 Jun 1;49(6):101702. Epub 2020 Feb 1.

Service of Reproductive Medicine, Clinique Mutualiste La Sagesse, Rennes, France. Electronic address:

Objective: To compare live birth rate after fresh transfer and cumulative birth rates after vitrified embryo transfer in patients triggered by GnRHa, and 1500 r-hCG bolus on the day of the pick up to a selected population of patients triggered by r-hCG.

Design: Retrospective case-control study SETTING: Private hospital, Rennes, France PATIENTS: Patients with more than 18 follicles greater than 11 mm on the day of the triggering, or patients with a history of OHSS INTERVENTION: We triggered according to the European protocol by GnRHa and a bolus of 1500 UI of r-HCG on the day of the pick-up and performed if possible a fresh transfer on day 2, 3 or 5.

Main Outcome Measure: The live birth rate using fresh transfer (FT) and the cumulative birth rate by cycle of FT and frozen embryo transfer (FET) between patients triggered by GnRHa with a bolus injection of 1500 r-hCG and patients triggered by r-hCG. Read More

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Development of medicated chewing gum of taste masked levocetirizine dihydrochloride using different gum bases: and evaluation.

Drug Dev Ind Pharm 2020 Mar 9;46(3):395-402. Epub 2020 Feb 9.

Department of Pharmaceutics, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt.

The aim of this study was to develop medicated chewing gum (MCG) formulation for taste-masked levocetirizine dihydrochloride (LCZ) that can provide fast drug release into the salivary fluid. Taste-masked LCZ was first prepared by two methods: cyclodextrin complexation using Kleptose or Captisol and formation of drug resin complex using Kyron T-154 or Kyron T-314 to overcome poor LCZ palatability. MCGs were then prepared using the taste-masked drug, gum base (Artica-T, Chicle, or Health In Gum (HIG), plasticizer (glycerol or soy lecithin at 6 or 8% of the final gum weight). Read More

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Study on redispersibility of drug nanocrystals particles during storage: Novel understanding based on water adsorption and glass transition of amorphous matrix formers.

Int J Pharm 2020 Feb 9;575:118945. Epub 2019 Dec 9.

Key Laboratory Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China; Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia. Electronic address:

The objective of this study was to understand the influence of the water adsorption and glass transition of matrix formers on redispersibility in water of drug nanocrystals-aggregated particles(NAP) during storage, and the critical storage strategy for NAP powders were determined based on the Guggenheim-Anderson-de Boer (GAB) and the Gordon-Taylor models. Apigenin was used as model drug. Six kinds of matrix formers sucrose(SU), lactose(LA), trehalose(TR), inulin(IN), maltodextrin(MA) and PVPK30(PV) were used to prepare apigenin nanocrystals-aggregated particles (AN-NAPs). Read More

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February 2020

Effect of vitrification temperature and cryoprotectant concentrations on the mRNA transcriptome of bovine mature oocytes after vitrifying at immature stage.

Theriogenology 2020 May 18;148:225-235. Epub 2019 Nov 18.

College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471023, China; Henan Provincial Key Laboratory for Grass-Feeding Animal, Henan University of Science and Technology, Luoyang, 471023, China. Electronic address:

The present study aimed to investigate the effect of vitrification temperature (VT) and cryoprotective agent concentrations (CPAs) on the mRNA transcriptome of bovine mature oocytes after vitrifying at immature stage. Cumulus oocyte complexes (COCs) were randomly divided into the following five groups: fresh oocytes (control), oocytes vitrified in liquid helium (LHe; -269 °C) with 5.6 M CPAs (LHe 5. Read More

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Radiofrequency identification tag system improves the efficiency of closed vitrification for cryopreservation and thawing of bovine ovarian tissues.

J Assist Reprod Genet 2019 Nov 5;36(11):2251-2257. Epub 2019 Nov 5.

Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki City, Kanagawa, 216-8511, Japan.

Purpose: A radiofrequency identification (RFID) tag system was designed to streamline cryopreservation and thawing procedures. This study evaluated the usefulness of the RFID tag system for improving the efficiency of cryopreserving/thawing bovine ovarian tissue by the closed vitrification protocol.

Methods: Six participants carried out closed vitrification and thawing of bovine ovarian tissues procedures using either the conventional or the new RFID tag method, and the time required to perform each step of the respective methods was measured. Read More

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November 2019

Perinatal and maternal outcome after vitrification of blastocysts: a Nordic study in singletons from the CoNARTaS group.

Hum Reprod 2019 11;34(11):2282-2289

Department of Obstetrics and Gynecology, Institute of Clinical Science, Sahlgrenska Academy, Gothenburg University, East Hospital, Sahlgrenska University Hospital, Gothenburg, Sweden.

Study Question: Is transfer of vitrified blastocysts associated with higher perinatal and maternal risks compared with slow-frozen cleavage stage embryos and fresh blastocysts?

Summary Answer: Transfer of vitrified blastocysts is associated with a higher risk of preterm birth (PTB) when compared with slow-frozen cleavage stage embryos and with a higher risk of a large baby, hypertensive disorders in pregnancy (HDPs) and postpartum hemorrhage (PPH) but a lower risk of placenta previa when compared with fresh blastocysts.

What Is Known Already: Transfer of frozen-thawed embryos (FETs) plays a central role in modern fertility treatment, limiting the risk of ovarian hyperstimulation syndrome and multiple pregnancies. Following FET, several studies report a lower risk of PTB, low birth weight (LBW) and small for gestational age (SGA) yet a higher risk of fetal macrosomia and large for gestational age (LGA) compared with fresh embryos. Read More

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November 2019

The impact of serum oestradiol concentration prior to progesterone administration on live birth rate in single vitrified-warmed blastocyst transfer cycles.

Reprod Biomed Online 2019 Dec 3;39(6):1026-1033. Epub 2019 Sep 3.

Bahceci Fulya Assisted Reproduction Centre, Istanbul, Turkey.

Research Question: Can serum oestradiol concentrations on the day of progesterone initiation predict live birth rates in single, autologous vitrified-warmed blastocyst transfers following artificial endometrial preparation?

Design: This retrospective study included the first transfers of 468 patients with unexplained or tubal factor infertility who underwent freeze-all cycles using single, top-quality blastocysts after artificial endometrial preparation from January 2015 to January 2018. Patients were stratified into four groups based on serum oestradiol concentration percentiles on the day of progesterone initiation: Group 1 (<25th percentile), Group 2 (25-50th percentile), Group 3 (51-75th percentile) and Group 4 (>75th percentile). The primary outcome was live birth rate. Read More

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December 2019

Production of Handmade Open Pulled Straw (OPS) Using Digital Heating Gun for the Vitrification Process.

Cryo Letters 2019 Nov-Dec;40(6):367-373

Animal Genetic Resources Research Center, National Institute of Animal Science, Rural Development Administration (RDA), Jeonbuk, Republic of Korea.

Background: Vitrification is the most popular technique for the cryopreservation of oocytes and embryos, replacing slow freezing methods.

Materials And Methods: This study evaluated the efficient manufacturing methods of handmade open pulled straw (OPS) with a digital heating gun that could be proposed for vitrification.

Results: Production efficiency of OPS using 0. Read More

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N-acetyl cysteine restores the fertility of vitrified-warmed mouse oocytes derived through ultrasuperovulation.

PLoS One 2019 22;14(10):e0224087. Epub 2019 Oct 22.

Division of Reproductive Engineering, Center for Animal Resources and Development, Kumamoto University, Honjo, Chuo-ku, Kumamoto, Japan.

Oocyte cryopreservation is useful for preserving fertility and storing genetic resources. However, the small number of oocytes acquired using conventional treatment to induce superovulation and the reduction of fertility due to cryopreservation represent significant problems. Herein, we vitrified the oocytes derived through high-yield superovulation using inhibin antiserum and equine chorionic gonadotropin (IAS + eCG: IASe) and examined the yield of cryopreserved oocytes and survival rates relative to those of vitrified-warmed mouse oocytes derived through conventional superovulation using equine chorionic gonadotropin (eCG). Read More

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Safety of fertility treatments in women with systemic autoimmune diseases (SADs).

Expert Opin Drug Saf 2019 Sep 12;18(9):841-852. Epub 2019 Jul 12.

b Vita-Salute San Raffaele University , Milan , Italy.

: Systemic Autoimmune Diseases (SADs) include systemic lupus erythematosus, antiphospholipid antibody syndrome, rheumatoid arthritis, systemic sclerosis, Sjogren's syndrome, mixed connective tissue disease, idiopathic inflammatory myopathies and vasculitis. SADs often occur in women of childbearing age and can affect fertility. Both infertility treatments and fertility preservation techniques are thus often indicated. Read More

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September 2019

Influence of resveratrol supplementation on IVF-embryo transfer cycle outcomes.

Reprod Biomed Online 2019 Aug 20;39(2):205-210. Epub 2019 Mar 20.

Centre for Reproductive Medicine and Implantation Research, Sugiyama Clinic Shinjuku, Tokyo, Japan.

Research Question: Does resveratrol, a polyphenolic compound, affect IVF-embryo transfer outcomes?

Design: This single-centre, cross-sectional retrospective study was designed to compare the outcomes of embryo transfer cycles in women receiving resveratrol supplementation (200 mg/day) continuously (RES group) with a control group (non-RES group). Of 8686 embryo transfer cycles, 1409 cycles with poor prognostic factors were excluded, including cycles in women aged ≥43 years and those with poor-quality embryos. The RES group (204 cycles, 102 women) was compared with the non-RES group (7073 cycles, 2958 women). Read More

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Use of progestins to inhibit spontaneous ovulation during ovarian stimulation: the beginning of a new era?

Reprod Biomed Online 2019 Aug 29;39(2):321-331. Epub 2019 Mar 29.

Department of Medical and Surgical Sciences for Mother, Child and Adult, University of Modena and Reggio Emilia, Modena, Italy.

Advances in oocyte and embryo cryopreservation for assisted reproduction prompted new approaches to ovarian stimulation. Attention has been paid to progesterone and its derivatives to block the LH surge, as oocyte vitrification removes possible harmful effects of progestins on endometrial receptivity. This review summarizes the current status of progestin use to inhibit ovulation during ovarian stimulation compared with conventional ovarian stimulation. Read More

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Effect of pretreatment with a levonorgestrel-releasing intrauterine system on IVF and vitrified-warmed embryo transfer outcomes in women with adenomyosis.

Reprod Biomed Online 2019 Jul 11;39(1):111-118. Epub 2019 Mar 11.

Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, 639 Zhizaoju Road, Shanghai 200001, People's Republic of China. Electronic address:

Research Question: Does the use of a levonorgestrel-releasing intrauterine system (LNG-IUS) improve the ongoing pregnancy rate of vitrified-warmed embryo transfer in women with adenomyosis undergoing IVF?

Design: This retrospective study included 358 women with adenomyosis undergoing IVF. Of these, 134 women were enrolled in the LNG-IUS group and another 224 women were in the control group. All women were screened for adenomyosis by transvaginal ultrasound and magnetic resonance imaging (MRI). Read More

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Endometrial preparation before the transfer of single, vitrified-warmed, euploid blastocysts: does the duration of estradiol treatment influence clinical outcome?

Fertil Steril 2019 06 24;111(6):1177-1185.e3. Epub 2019 Apr 24.

Reproductive Medicine Associates of New York, New York, New York; Department of Obstetrics and Gynecology and Reproductive Science, Icahn School of Medicine at Mount Sinai West, New York, New York.

Objective: To investigate whether the duration of estrogen administration before euploid embryo transfer affects clinical outcome.

Design: Retrospective cohort study.

Setting: Private, academic fertility center. Read More

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Amorphous pullulan trehalose microparticle platform for respiratory delivery.

Int J Pharm 2019 May 2;563:156-168. Epub 2019 Apr 2.

Department of Mechanical Engineering, University of Alberta, Edmonton, Canada. Electronic address:

Spray drying biologics and small-molecule drugs can increase their thermal stability relative to liquid dosage forms and allow for widespread distribution to developing countries without cold chain infrastructure. In this study, pullulan trehalose powder is spray dried for inhalation. The powder is characterized in terms of manufacturability, physical stability, device compatibility, and aerosol performance. Read More

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Comparison of pregnancy outcomes following fresh and electively frozen single blastocyst transfer in natural cycle and clomiphene-stimulated IVF cycles.

Hum Reprod Open 2018 25;2018(3):hoy006. Epub 2018 Apr 25.

Kato Ladies Clinic, Tokyo 160-0023, Japan.

Study Question: Are there any differences in live birth rates (LBR) following fresh blastocyst transfer in natural or clomiphene-stimulated cycles, or after elective blastocyst freezing in clomiphene-stimulated cycles followed by thawing and transfer at different time-points?

Summary Answer: Clomiphene citrate (CC) administration adversely affected the LBR after single fresh blastocyst transfer (SBT) in CC cycles compared with that in natural cycles, while this adverse effect of CC is not present when a single vitrified-warmed blastocyst transfer (SVBT) is performed in subsequent natural ovulatory cycles, regardless of the duration between CC administration and the day of SVBT.

What Is Known Already: CC affects uterine receptivity associated with a thinning of the uterine endometrium through an antioestrogenic effect. However, the duration that this adverse effect of CC on uterine endometrium persists after initial use is still unknown. Read More

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Patients' attitudes and preferences towards a freeze-all strategy in ART treatment.

Hum Reprod 2019 04;34(4):679-688

Department of Obstetrics and Gynaecology, Fertility Clinic Section 455, Hvidovre University Hospital, Hvidovre, Copenhagen, Denmark.

Study Question: What are the attitudes towards different aspects of a freeze-all strategy and elective frozen embryo transfer (eFET) in comparison with fresh embryo transfer in assisted reproductive technology treatment among female and male patients before and after their first ART treatment cycle in a public health care setting?

Summary Answer: Despite concerns about the delay in embryo transfer associated with eFET, nearly 60% of the participants were in favor of eFET compared with fresh embryo transfer assuming that the clinical pregnancy rate was equivalent.

What Is Known Already: Vitrification and blastocyst transfer have considerably improved success rates after FET with ongoing pregnancy rates in frozen cycles approaching those seen in fresh treatment cycles. Furthermore, the risk of ovarian hyperstimulation syndrome (OHSS) is essentially eliminated in FET cycles, and FET may be beneficial to the endometrial and fetal development because a hormonal environment mirroring the natural cycle is enabled. Read More

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Time from referral to ovarian tissue cryopreservation in a cohort of Danish women.

Acta Obstet Gynecol Scand 2019 05 7;98(5):616-624. Epub 2019 Mar 7.

Laboratory of Reproductive Biology, The Juliane Marie Center for Women, Children and Reproduction, University Hospital of Copenhagen, Copenhagen, Denmark.

Introduction: Young women with a cancer diagnosis often have very little time to decide whether or not to commence fertility-preserving strategies before initiating potentially sterilizing cancer treatment. Minimizing the interval from opting for fertility preservation to completion of the procedure will reduce the potential risk of delaying cancer treatment. In the current study, we have evaluated the period of time from referral to ovarian tissue cryopreservation (OTC) to actual freezing of the tissue in a cohort of Danish women. Read More

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A single injection of corifollitropin alfa supplemented with human chorionic gonadotropin increases follicular recruitment and transferable embryos in the rabbit.

Reprod Domest Anim 2019 Apr 18;54(4):696-701. Epub 2019 Feb 18.

Institute of Science and Animal Technology (ICTA), Universitat Politècnica de València, Valencia, Spain.

Superovulation protocols are designed to achieve maximum embryo yields. Nevertheless, ovarian response control and the quality of obtained embryos are still a challenge. On the other hand, to save the superovulated embryos until their subsequent use, it is usual to cryopreserve them, so it is also crucial to assess their cryotolerance. Read More

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Preservation of boar semen: An update.

Reprod Domest Anim 2019 Mar 18;54(3):423-434. Epub 2019 Jan 18.

Laboratory of Reproductive Medicine and Molecular Endocrinology, Center of Translational Medicine-Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Temuco, Chile.

In the pork industry, artificial insemination and the storage of boar semen in liquid at 17°C are routinely applied to optimize the ejaculate and bring about rapid genetic changes that are reflected in the animal protein. Although the results are satisfactory, they are below what occurs with natural mating. It is currently possible to preserve boar semen with storage at 17°C and slow freezing, since to date there is only one study on vitrification, with negative results applicable only in the case of implementing an intracytoplasmic sperm injection. Read More

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The current status of oocyte banks: domestic and international perspectives.

Fertil Steril 2018 12;110(7):1203-1208

Bioethics Institute Ghent, Department of Philosophy and Moral Sciences, Ghent University, Ghent, Belgium.

Two major breakthroughs in the field of assisted reproduction-oocyte donation and oocyte vitrification-have joined forces to create the rapidly emerging phenomenon of commercial egg banks (CEBs). In this review, we examine the history of this concept, the operational models, the geographical variations, and the benefits and pitfalls of CEBs, including the ethical and legal dilemmas arising from gamete mobility. We highlight future directions in the brave new world of third-party reproduction. Read More

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December 2018