Highlights:

Highlights
Biol Reprod 2006 75: 491. [Full Text] [PDF]  

Embryo:

Makoto Nakasato, Yoshiyuki Shirakura, Masatoshi Ooga, Masato Iwatsuki, Masahiko Ito, Shun-ichiro Kageyama, Senkiti Sakai, Masao Nagata, and Fugaku Aoki

Involvement of the STAT5 Signaling Pathway in the Regulation of Mouse Preimplantation Development
Biol Reprod 2006 75: 508-517. [Abstract] [Full Text] [PDF] [Supplemental Figure]  

Summary: STAT5 proteins function in preimplantation development by mediating the signals from cytokines

Elena Popova, Michael Bader, and Alexander Krivokharchenko

Full-Term Development of Rat after Transfer of Nuclei from Two-Cell Stage Embryos
Biol Reprod 2006 75: 524-530. [Abstract] [Full Text] [PDF]  

Summary: Rats have been cloned by transfer of two-stage nuclei into parthenogenetically preactivated enucleated oocytes

Tadashi Furusawa, Mitsumi Ikeda, Fukashi Inoue, Katsuhiro Ohkoshi, Takehito Hamano, and Tomoyuki Tokunaga

Gene Expression Profiling of Mouse Embryonic Stem Cell Subpopulations
Biol Reprod 2006 75: 555-561. [Abstract] [Full Text] [PDF] [Supplementary Tables][Supplemental Table]  

Summary: Gene expression profiling of embryonic cell subpopulations identified the uncharacterized genes that were upregulated in undifferentiated cells, and suggested the difference between epigenetic status of SSEA-1 negative and positive cells.

Malgorzata Waksmundzka, Anna Wisniewska, and Marek Maleszewski

Allocation of Cells in Mouse Blastocyst Is Not Determined by the Order of Cleavage of the First Two Blastomeres
Biol Reprod 2006 75: 582-587. [Abstract] [Full Text] [PDF] [Supplemental materials]  

Summary: Lineage tracing in mouse blastocyst demonstrates that allocation of cells into its embryonic and abembryonic parts is not directed by the order of cleavage of the first two blastomeres

Gamete Biology:

Wenlei Cao, Lisa Haig-Ladewig, George L. Gerton, and Stuart B. Moss

Adenylate Kinases 1 and 2 Are Part of the Accessory Structures in the Mouse Sperm Flagellum
Biol Reprod 2006 75: 492-500. [Abstract] [Full Text] [PDF]  

Summary: Adenylate kinases 1 and 2 are differentially localized in the accessory structures of the sperm flagellum where they can buffer the adenylate energy charge for motility

TanYa M. Gwathmey, George G. Ignotz, Jacob L. Mueller, Puttaswamy Manjunath, and Susan S. Suarez

Bovine Seminal Plasma Proteins PDC-109, BSP-A3, and BSP-30-kDa Share Functional Roles in Storing Sperm in the Oviduct
Biol Reprod 2006 75: 501-507. [Abstract] [Full Text] [PDF] [Supplemental Material]  

Summary: Bovine seminal plasma proteins PDC-109, BSP-A3, and BSP-30-kDa enable bull sperm to bind to oviductal epithelium and prolong the motile lives of sperm in vitro

De Wu, Queenie Ching-Kwan Cheung, Lihua Wen, and Julang Li

A Growth-Maturation System That Enhances the Meiotic and Developmental Competence of Porcine Oocytes Isolated from Small Follicles
Biol Reprod 2006 75: 547-554. [Abstract] [Full Text] [PDF]  

Summary: An oocyte growth-maturation system facilitates the final stage of oocyte growth and thus results in better oocyte maturation, and developmental competency compared to the conventional direct oocyte maturation system

Minjie Lin, Yun Hwa Lee, Weian Xu, Mark A. Baker, and R. John Aitken

Ontogeny of Tyrosine Phosphorylation-Signaling Pathways During Spermatogenesis and Epididymal Maturation in the Mouse
Biol Reprod 2006 75: 588-597. [Abstract] [Full Text] [PDF]  

Summary: The capacity for cAMP-dependent tyrosine phosphorylation is only exhibited by spermatozoa following their entry into the epididymis, and this process is causally related to the ability of these cells to exhibit hyperactivated movement

Immunology:

Paula J. Scaife, Judith N. Bulmer, Stephen C. Robson, Barbara A. Innes, and Roger F. Searle

Effector Activity of Decidual CD8⁺ T Lymphocytes in Early Human Pregnancy
Biol Reprod 2006 75: 562-567. [Abstract] [Full Text] [PDF]  

Summary: Decidual CD8+ T cells display cytolytic activity, do not evoke a predominant Th2 type cytokine environment, and may regulate invasion of extravillous trophoblast cells into the uterus

Male Reproductive Tract:

Jose L. Tomsig, Sanja Usanovic, and Terry T. Turner

Growth Factor-Stimulated Mitogen-Activated Kinase (MAPK) Phosphorylation in the Rat Epididymis Is Limited by Segmental Boundaries
Biol Reprod 2006 75: 598-604. [Abstract] [Full Text] [PDF]  

Summary: Diffusion of growth factors within the interstitium of segments 1 and 2 of the rat epididymis is restricted by connective tissue septa as judged by MAPK activation.

Marco Mewe, Christiane K. Bauer, Jürgen R. Schwarz, and Ralf Middendorff

Mechanisms Regulating Spontaneous Contractions in the Bovine Epididymal Duct
Biol Reprod 2006 75: 651-659. [Abstract] [Full Text] [PDF]  

Summary: Bovine epididymal autorhythmicity is based on a PTGS2-dependent prostaglandin release and MAP kinase-dependent activation of L-type Ca2+ channels; specialized cells may regulate and synchronize epididymal myogenic activity

Mechanisms of Hormone Action:

You-Hong Cheng, Ayse Imir, Takashi Suzuki, Veysel Fenkci, Bertan Yilmaz, Hironobu Sasano, and Serdar E. Bulun

SP1 and SP3 Mediate Progesterone-Dependent Induction of the 17beta Hydroxysteroid Dehydrogenase Type 2 Gene in Human Endometrium
Biol Reprod 2006 75: 605-614. [Abstract] [Full Text] [PDF]  

Summary: Expression of HSD17B2 gene in endometrial epithelial cells is regulated by SP1 and SP3, which are downstream targets of progesterone-dependent paracrine signals originating from endometrial stromal cells.

Neuroendocrinology:

Jodi L. Downs and Henryk F. Urbanski

Neuroendocrine Changes in the Aging Reproductive Axis of Female Rhesus Macaques (Macaca mulatta)
Biol Reprod 2006 75: 539-546. [Abstract] [Full Text] [PDF]  

Summary: Elevated circulating FSH and decreased AMH concentrations provide reliable endocrine predictors of perimenopause onset in old cycling rhesus macaques

Ovary:

Karenne N. Fru, Catherine A. VandeVoort, and Charles L. Chaffin

Mineralocorticoid Synthesis During the Periovulatory Interval in Macaques
Biol Reprod 2006 75: 568-574. [Abstract] [Full Text] [PDF]  

Summary: The mineralocorticoid DOC is produced by macaque granulosa cells in response to an ovulatory stimulus

Wei Shen, Donghui Zhang, Tingting Qing, Jing Cheng, Zhaodai Bai, Yuqiang Shi, Mingxiao Ding, and Hongkui Deng

Live Offspring Produced by Mouse Oocytes Derived from Premeiotic Fetal Germ Cells
Biol Reprod 2006 75: 615-623. [Abstract] [Full Text] [PDF]  

Summary: Premeiotic female germ cells derived from mouse fetuses as early as 12.5 dpc can be induced to efficiently complete meiosis by a combination of in vivo transplantation and in vitro culture

Bethany N. Karman and Shelley A. Tischkau

Circadian Clock Gene Expression in the Ovary: Effects of Luteinizing Hormone
Biol Reprod 2006 75: 624-632. [Abstract] [Full Text] [PDF]  

Summary: A diurnal pattern of circadian clock gene expression is present in the ovary; the gonadotropin-primed immature rat model demonstrates potential regulation by gonadotropins.

David M.W. Barrett, Pawel M. Bartlewski, Rajesha Duggavathi, Kate L. Davies, and Norman C. Rawlings

Suppression of Follicle Wave Emergence in Cyclic Ewes by Supraphysiologic Concentrations of Estradiol-17beta and Induction with a Physiologic Dose of Exogenous Ovine Follicle-Stimulating Hormone
Biol Reprod 2006 75: 633-641. [Abstract] [Full Text] [PDF]  

Summary: Truncation of FSH peaks by estradiol implants prevents follicle wave emergence, but injection of physiological concentrations of FSH reinitiated follicle wave emergence.

Pituitary:

Berta Levavi-Sivan, Jakob Biran, and Einat Fireman

Sex Steroids Are Involved in the Regulation of Gonadotropin-Releasing Hormone and Dopamine D2 Receptors in Female Tilapia Pituitary
Biol Reprod 2006 75: 642-650. [Abstract] [Full Text] [PDF]  

Summary: Estradiol and 17{alpha},20ß-dihydroxy-4-pregnen-3-one are implicated in the synthesis of GnRH and dopamine receptors in tilapia female, in relation to gonadotropin expression and release

Pregnancy:

Mark Wareing, Susan L. Greenwood, Gregor K. Fyfe, and Philip N. Baker

Reactivity of Human Placental Chorionic Plate Vessels from Pregnancies Complicated by Intrauterine Growth Restriction (IUGR)
Biol Reprod 2006 75: 518-523. [Abstract] [Full Text] [PDF]  

Summary: Placental chorionic plate venoconstriction in response to hypoxia may provide a mechanism for increased fetoplacental vascular resistance associated with IUGR

Reproductive Technology:

Diana Lucifero, João Suzuki, Vilceu Bordignon, Josée Martel, Christian Vigneault, Jacinthe Therrien, France Filion, Lawrence C. Smith, and Jacquetta M. Trasler

Bovine SNRPN Methylation Imprint in Oocytes and Day 17 In Vitro-Produced and Somatic Cell Nuclear Transfer Embryos
Biol Reprod 2006 75: 531-538. [Abstract] [Full Text] [PDF] [Supplemental Data]  

Summary: An area of differential methylation within bovine SNRPN was abnormally methylated in SCNT embryos

Pavel Trefil, Alena Micáková, Jitka Mucksová, Jirí Hejnar, Martin Poplstein, Murray R. Bakst, Jirí Kalina, and Jean-Pierre Brillard

Restoration of Spermatogenesis and Male Fertility by Transplantation of Dispersed Testicular Cells in the Chicken
Biol Reprod 2006 75: 575-581. [Abstract] [Full Text] [PDF]  

Summary: Dispersed testicular cells transferred into sterilized recipient male chickens resulted in spermatogenesis, semen production and fertile eggs when semen collected from recipient males was inseminated into sexually mature female chickens

Additions and Corrections:

CORRECTION: Schmidt et al.
Biol Reprod 2006 75: 660. [Full Text] [PDF]  

CORRECTION: Macháty etal.
Biol Reprod 2006 75: 660. [Full Text] [PDF]  

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