OOIR: Observatory of International Research

Papers

(The TQCC of Zygote is 3. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-04-01 to 2025-04-01.)

Article	Citations
Crosstalk between protein kinases A and C regulates sea urchin sperm motility	22
Expression of genes in the AKT signalling pathway in human oocytes from patients with polycystic ovaries	21
Effects of fetal bovine serum on trophectoderm and primitive endoderm cell allocation of in vitro-produced bovine embryos	16
Rreb1 is a key transcription factor in Sertoli cell maturation and function and spermatogenesis in mouse	16
The effects of the day of trophectoderm biopsy and blastocyst grade on the clinical and neonatal outcomes of preimplantation genetic testing–frozen embryo transfer cycles	15
β-Mercaptoethanol in culture medium improves cryotolerance of in vitro-produced bovine embryos	14
Comparison of serum progesterone levels on the day of frozen embryo transfers according to type of endometrial preparation: a single centre, retrospective study	13
Use of alginate hydrogel to improve long-term 3D culture of spermatogonial stem cells: stemness gene expression and structural features	13
Effect of BMP–Wnt–Nodal signal on stem cell differentiation	12
Effect of carvacrol antioxidant capacity on oocyte maturation and embryo production in cattle	11
Do follicle-stimulating hormone receptor polymorphisms in infertile men influence intracytoplasmic sperm injection outcomes? A prospective cohort study	11
Effects of EGF and melatonin on gene expression of cumulus cells and furtherin vitroembryo development in bovines	11
The relationship between mitochondrial ND5 gene polymorphisms and in vitro embryo production in Sanjabi sheep	11
Effect of the addition of antifreeze protein type I on the quality of post-thawed domestic cat epididymal sperm	10
Cytoplasmic granules in bovine oocytes do not affect embryonic or fetal development	9
Effects of in vitro exposure of sheep ovarian tissue to zearalenone and matairesinol on preantral follicles	9
CsA promotes trophoblast invasion accompanied by changes in leukaemic inhibitory factor and fibroblast growth factor in peri-implantation blastocysts	9
Kisspeptin stimulates sheep ovarian follicular development in vitro through homologous receptors	9
Advancements in mammalian X and Y sperm differences and sex control technology	8
All-triploid offspring in the yellowtail tetra Astyanax altiparanae Garutti & Britski 2000 (Teleostei, Characidae) derived from female tetraploid × male diploid crosses	7
Spawning, egg and larval description of the brazilian basslet Gramma brasiliensis Sazima, Gasparini & Moura, 1998 in captivity	7
Identification and expression analysis of Dazl homologue in Cynops cyanurus	7
Folliculogenesis-related genes are differently expressed in secondary and tertiary ovarian follicles	6
Oxidative stress induced by methomyl exposure reduces the quality of early embryo development in mice	6
Mineral oil viscosity and quantity impact osmotic pressure, not embryo development	6

Treatment of mice with maternal intermittent fasting to improve the fertilization rate and reproduction	6
Morphological evaluation of adult domestic cat testicular biopsy after vitrification	6
Tricostatin A-treated round spermatid enhances preimplantation embryo developmental competency following round spermatid injection in mice	6
Real-time image and time-lapse technology to select the single blastocyst to transfer in assisted reproductive cycles	6
Influence of choline and follistatin supplementation during in vitro bovine oocyte maturation on oocyte competence and blastocyst development	6
Comparison of CellRox green fluorescence upon thawing on in vitro Bos taurus and Bos indicus embryos cryopreserved by slow freezing or vitrification	6
Evaluating animal models comprising direct and maternal effects associated with growth rates and the Kleiber ratio in Harnali sheep	6
Ectopic autologous transplantation of ovarian tissue as a feasible technique to assess ovarian morphophysiology	6
Alterations in the expression pattern of some epigenetic-related genes and microRNAs subsequent to oocyte cryopreservation	6
Bovine ICSI: limiting factors, strategies to improve its efficiency and alternative approaches	6
Ultrastructural study:in vitroandin vivodifferentiation of mice spermatogonial stem cells	6
Comparative analysis of calcium-sensing receptor (CaSR) expression and function in normal and abnormal human sperm and spermatogenic cells	6
A microfluidic sperm-sorting device reduces the proportion of sperm with double-stranded DNA fragmentation	5
Modulation of lipid metabolism through multiple pathways during oocyte maturation and embryo culture in bovine	5
Morpho-molecular evaluation for developmental competence of oocytes retrieved through transvaginal ovum pick-up from FSH-stimulated Tharparkar donor cows (Bos indicus)	5
The effect of pentoxifylline and calcium ionophore treatment on sperm cell biology in oligoasthenoteratozoospermia samples	5
Spastin interacts with CRMP5 to promote spindle organization in mouse oocytes by severing microtubules	5
Resveratrol attenuates doxorubicin-induced toxicity during in vitro culture of mouse-isolated preantral follicles	5
Molecular genetic mechanisms of teratozoospermia	5
Comparison of three antioxidants in chemical and biological assays on porcine oocytes during ageing in vitro	4
Oocyte competence develops: nuclear maturation synchronously with cytoplasm maturation	4
Follicular development, morphological integrity, and oxidative stress in bovine preantral follicles cultured in vitro with ascorbic acid	4
Day 3 embryo assessment does not provide a reliable prediction for blastocyst formation and designation: a retrospective cohort study	4
The effect of consecutive ejaculation on the sperm parameters in the oligo-astheno-teratozoospermia (OAT) men	4
GPR120 agonist ameliorated insulin resistance and improved ovarian function	4
In vitro maturation in synthetic oviductal fluid increases gene expression associated with quality and lipid metabolism in bovine oocytes	4
Pum3is dispensable for mouse oocyte maturation and embryo developmentin vitro	4
Embryonic development of the world’s smallest puffer fish, Carinotetraodon travancoricus – a threatened freshwater fish of the Western Ghats Biodiversity Hotspot	4
Morphometric evaluation of two-pronucleus zygote images using image-processing techniques	4
Understanding CD-117 gene expression in mouse testicular germ cells: in vitro and in vivo studies	4
Strategy for embryo transfer to improve pregnancy outcomes in advanced maternal age	4
Effect of temperature on the embryonic and larvae development of discus fish Symphysodon aequifasciatus and time of first feeding	4
Impact ofAlpinia galangaand zinc on semen quality and some reproductive hormone constituents in California rabbit bucks	4
Evaluation of co-cultured spermatogonial stem cells encapsulated in alginate hydrogel with Sertoli cells and their transplantation into azoospermic mice	3
Comparison of two culture media on morphokinetics and ploidy status of sibling embryos	3
Single live birth derived from conjoined oocytes using laser-cutting technique: a case report	3
A review of methods for preserving male fertility	3
Comparing the IVM laboratory outcomes between stimulated IVF with unstimulated natural cycles	3
Improved embryonic development and utilization rates with EmbryoScope: a within-subject comparison versus a benchtop incubator	3
Supplementation of culture medium with quercetin improves mouse blastocyst quality and increases the expression of HIF-1α protein	3
Interference of fixatives and fixation period on the morphologic analysis of ovarian preantral follicles	3
Chemical pregnancy in fresh and cryopreserved cycles, using day 3 (cleavage stage) and day 4 embryos (morula stage)	3
Has the concept of polyspermy prevention been invented in the laboratory?	3
Toxic effects of methomyl on mouse oocytes and its possible mechanisms	3
Influence of single nucleotide polymorphism in the IGF-1 gene on performance and conformation traits in Munjal sheep	3
Selection of Rattus norvegicus cumulus–oocyte complex for vitrification by brilliant cresyl blue	3
The optimal frozen embryo transfer strategy for the recurrent implantation failure patient without blastocyst freezing: thawing day 3 embryos and culturing to day 5 blastocysts	3
Morphometric indices of native sheep breeds of the Himalayan region of India using multivariate principal component analysis	3
Bayesian analysis reveals the influence of maternal effect on pre-weaning body weights in Landlly piglets	3
Expression of genes associated with fertility in the uterus and oviduct of heifers challenged with lipopolysaccharide	3

Removal of the block to self-fertilization by low-calcium artificial seawater in the ascidian Ciona intestinalis	3
ZP3 and AIPL1 participate in GVBD of mouse oocytes by affecting the nuclear membrane localization and maturation of farnesylated prelamin A	3
Effect of oestrogen on mouse follicle growth and meiotic resumption	3
Comparative analysis of biochemical, hormonal, and mineral compositions of preovulatory and cystic ovarian follicles in buffalo during the non-breeding season	3
5,10-Methylenetetrahydrofolate reductase becomes phosphorylated during meiotic maturation in mouse oocytes	3
RFRP-3 synchronized with photoperiods regulates the seasonal reproduction of striped hamsters	3
Evaluation of sperm and hormonal assessments in Wagyu, Nellore, and Angus bulls	3
Extracellular vesicles from seminal plasma improved development of in vitro-fertilized mouse embryos	3
Supplementation of porcine in vitro maturation medium with FGF2, LIF, and IGF1 enhances cytoplasmic maturation in prepubertal gilts oocytes and improves embryo quality	3
Feeding role of mouse embryonic fibroblast cells is influenced by genetic background, cell passage and day of isolation	3
Live birth and clinical outcome of vitrification-warming donor oocyte programme: an experience of a single IVF unit	3
Exploring the effect of cryopreservation in assisted reproductive technology and potential epigenetic risk	3
Semen sexing and its impact on fertility and genetic gain in cattle	3
The identification and classification of candidate genes during the zygotic genome activation in the mammals	3