Highlights:

Highlights
Biol Reprod 2007 76: 345. [Full Text] [PDF]  

Embryo:

A. Li, V. Chandrakanthan, O. Chami, and C. O'Neill

Culture of Zygotes Increases p53 Expression in B6 Mouse Embryos, which Reduces Embryo Viability
Biol Reprod 2007 76: 362-367. [Abstract] [Full Text] [PDF]  

Summary: Mouse strains show differences in their susceptibility to preimplantation culture in vitro and TRP53 is up-regulated, and this is a cause of the loss of embryo viability consequent to embryo culture in a susceptible strain.

B. Mateusen, A. Van Soom, D.G.D. Maes, H. Favoreel, and H.J. Nauwynck

Receptor-Determined Susceptibility of Preimplantation Embryos to Pseudorabies Virus and Porcine Reproductive and Respiratory Syndrome Virus
Biol Reprod 2007 76: 415-423. [Abstract] [Full Text] [PDF]  

Summary: Preimplantation embryos starting from the five-cell stage are susceptible to a PRV infection but are refractory to a PRRV infection embryo, pseudorabies virus, porcine reproductive and respiratory syndrome virus, receptor, poliovirus receptor-related 1, sialoadhesin.

Gabriela F. Mastromonaco, Laura A. Favetta, Lawrence C. Smith, France Filion, and W. Allan King

The Influence of Nuclear Content on Developmental Competence of Gaur x Cattle Hybrid In Vitro Fertilized and Somatic Cell Nuclear Transfer Embryos
Biol Reprod 2007 76: 514-523. [Abstract] [Full Text] [PDF]  

Summary: Xenomitochondrial homoplasmy contributes to the poor developmental outcome observed in interspecies SCNT embryos between closely related Bos species.

Environment:

Noppadon Kitana, Seung Jae Won, and Ian P. Callard

Reproductive Deficits in Male Freshwater Turtle Chrysemys picta from Cape Cod, Massachusetts
Biol Reprod 2007 76: 346-352. [Abstract] [Full Text] [PDF]  

Summary: Using multiple biologic endpoints, reproductive deficits were found in adult male freshwater turtles trapped from a potentially impacted pond near a Superfund site on Cape Cod, Massachusetts.

Gamete Biology:

Natsuko Kawano and Manabu Yoshida

Semen-Coagulating Protein, SVS2, in Mouse Seminal Plasma Controls Sperm Fertility
Biol Reprod 2007 76: 353-361. [Abstract] [Full Text] [PDF]  

Summary: During mouse copulation, SVS2 enters the uterus with sperm and functions as a decapacitation factor.

Sachi Kume, Tsutomu Endo, Yukio Nishimura, Kiyoshi Kano, and Kunihiko Naito

Porcine SPDYA2 (RINGO A2) Stimulates CDC2 Activity and Accelerates Meiotic Maturation of Porcine Oocytes
Biol Reprod 2007 76: 440-447. [Abstract] [Full Text] [PDF]  

Summary: Porcine SPDYA2 was cloned and mRNA injection and overexpression accelerated oocyte meiotic maturation.

Cean LaRosa and Stephen M. Downs

Meiotic Induction by Heat Stress in Mouse Oocytes: Involvement of AMP-Activated Protein Kinase and MAPK Family Members
Biol Reprod 2007 76: 476-486. [Abstract] [Full Text] [PDF]  

Summary: Heat stress stimulates maturation in meiotically arrested mouse oocytes through activation of AMP-activated protein kinase.

Male Reproductive Tract:

Marie-France Lusignan, Annick Bergeron, Marie-Hélène Crête, Claude Lazure, and Puttaswamy Manjunath

Induction of Epididymal Boar Sperm Capacitation by pB1 and BSP-A1/-A2 Proteins, Members of the BSP Protein Family
Biol Reprod 2007 76: 424-432. [Abstract] [Full Text] [PDF]  

Summary: The porcine pB1 protein and the bovine BSP-A1/-A2 protein potentiate the capacitation of epididymal boar sperm, indicating the importance of BSP protein homologs in mammalian sperm capacitation male reproductive tract, acrosome reaction, fertilization, sperm, sperm capacitation.

Lynn M. Wallock-Montelius, Jesus A. Villanueva, Robert E. Chapin, A.J. Conley, Hung P. Nguyen, Bruce N. Ames, and Charles H. Halsted

Chronic Ethanol Perturbs Testicular Folate Metabolism and Dietary Folate Deficiency Reduces Sex Hormone Levels in the Yucatan Micropig
Biol Reprod 2007 76: 455-465. [Abstract] [Full Text] [PDF]  

Summary: Chronic ethanol consumption impairs spermatogenesis, and dietary folate deficiency reduces sex hormones, with divergent effects on testicular folate metabolism; testicular methionine synthase may influence the hormonal regulation of spermatogenesis.

Neuroendocrinology:

James A. Taylor, Marie-Laure Goubillon, Kevin D. Broad, and Jane E. Robinson

Steroid Control of Gonadotropin-Releasing Hormone Secretion: Associated Changes in Pro-Opiomelanocortin and Preproenkephalin Messenger RNA Expression in the Ovine Hypothalamus
Biol Reprod 2007 76: 524-531. [Abstract] [Full Text] [PDF]  

Summary: Physiological concentrations of estrogen and progesterone that either stimulate or inhibit GnRH secretion, respectively, are associated with changes in gene expression for POMC and PENK in specific nuclei in the ovine hypothalamus.

Ovary:

Lucie Tosca, Christine Chabrolle, Svetlana Uzbekova, and Joëlle Dupont

Effects of Metformin on Bovine Granulosa Cells Steroidogenesis: Possible Involvement of Adenosine 5' Monophosphate-Activated Protein Kinase (AMPK)
Biol Reprod 2007 76: 368-378. [Abstract] [Full Text] [PDF] [Supplemental Data]  

Summary: In bovine granulosa cells, metformin decreases steroidogenesis and MAPK3/MAPK1 phosphorylation through AMPK activation.

Leanne S. Sleer and Christopher C. Taylor

Cell-Type Localization of Platelet-Derived Growth Factors and Receptors in the Postnatal Rat Ovary and Follicle
Biol Reprod 2007 76: 379-390. [Abstract] [Full Text] [PDF]  

Summary: Platelet-derived growth factors and receptors are present in the rat ovarian follicle and contribute towards growth of preantral follicles.

Leanne S. Sleer and Christopher C. Taylor

Platelet-Derived Growth Factors and Receptors in the Rat Corpus Luteum: Localization and Identification of an Effect on Luteogenesis
Biol Reprod 2007 76: 391-400. [Abstract] [Full Text] [PDF]  

Summary: Platelet-derived growth factors and receptors are present in cells of the rat ovarian corpus luteum and contribute towards luteogenesis.

Tania Fayad, Réjean Lefebvre, Johannes Nimpf, David W. Silversides, and Jacques G. Lussier

Low-Density Lipoprotein Receptor-Related Protein 8 (LRP8) Is Upregulated in Granulosa Cells of Bovine Dominant Follicle: Molecular Characterization and Spatio-Temporal Expression Studies
Biol Reprod 2007 76: 466-475. [Abstract] [Full Text] [PDF]  

Summary: The mRNAs encoding LRP8, RELN, and MAPK8IP1 are differentially expressed during final follicular growth and ovulation, and suggest the presence of a paracrine mechanism involving RELN/LRP8/MAPK8IP1 interaction in the regulation of follicular development.

O.J. Ginther, L.A. Silva, R.R. Araujo, and M.A. Beg

Temporal Associations among Pulses of 13,14-Dihydro-15-keto-PGF_2alpha, Luteal Blood Flow, and Luteolysis in Cattle
Biol Reprod 2007 76: 506-513. [Abstract] [Full Text] [PDF]  

Summary: Luteal blood flow increased and decreased during individual PGFM pulses associated with spontaneous luteolysis.

Pregnancy:

Felice Arcuri, Lynn Buchwalder, Paolo Toti, Marcella Cintorino, Piero Tosi, Charles J. Lockwood, Basya Rybalov, and Frederick Schatz

Differential Regulation of Colony Stimulating Factor 1 and Macrophage Migration Inhibitory Factor Expression by Inflammatory Cytokines in Term Human Decidua: Implications for Macrophage Trafficking at the Fetal-Maternal Interface
Biol Reprod 2007 76: 433-439. [Abstract] [Full Text] [PDF]  

Summary: Differential regulation by TNF and IL1B of CSF1 expression in human decidual cells reveals a novel mechanism by which inflammatory cytokines can affect macrophage trafficking at the fetal-maternal interface and influence pregnancy.

Stephen J. Renaud, Shannyn K. Macdonald-Goodfellow, and Charles H. Graham

Coordinated Regulation of Human Trophoblast Invasiveness by Macrophages and Interleukin 10
Biol Reprod 2007 76: 448-454. [Abstract] [Full Text] [PDF]  

Summary: Interleukin-10, a cytokine whose levels are decreased in the sera of women afflicted with preeclampsia, interferes with the ability of activated macrophages to inhibit trophoblast invasiveness.

Olha Kevorkova, Maude Ethier-Chiasson, and Julie Lafond

Differential Expression of Glucose Transporters in Rabbit Placenta: Effect of Hypercholesterolemia in Dams
Biol Reprod 2007 76: 487-495. [Abstract] [Full Text] [PDF]  

Summary: Maternal hypercholesterolemia influences SLC2 translocation in placenta.

Reproductive Technology:

Huiping Yang, Leona Hazlewood, Sheila J. Heater, Paula A. Guerrero, Ronald B. Walter, and Terrence R. Tiersch

Production of F₁ Interspecies Hybrid Offspring with Cryopreserved Sperm from a Live-Bearing Fish, the Swordtail Xiphophorus helleri
Biol Reprod 2007 76: 401-406. [Abstract] [Full Text] [PDF]  

Summary: Successful fertilization and offspring were produced by cryopreserved sperm in a live-bearing fish Xiphophorus helleri.

Fabíola F. Paula-Lopes, Marc Boelhauve, Felix A. Habermann, Fred Sinowatz, and Eckhard Wolf

Leptin Promotes Meiotic Progression and Developmental Capacity of Bovine Oocytes Via Cumulus Cell-Independent and -Dependent Mechanisms
Biol Reprod 2007 76: 532-541. [Abstract] [Full Text] [PDF]  

Summary: Leptin treatment during bovine maturation improved the ability of the oocyte to sustain embryonic development by enhanced oocyte maturation directly by acting on the oocyte and indirectly by preventing cumulus cell apoptosis.

Testis:

Keizo Tokuhiro, Yasushi Miyagawa, Shuichi Yamada, Mika Hirose, Hiroshi Ohta, Yoshitake Nishimune, and Hiromitsu Tanaka

The 193-Base Pair Gsg2 (Haspin) Promoter Region Regulates Germ Cell-Specific Expression Bidirectionally and Synchronously
Biol Reprod 2007 76: 407-414. [Abstract] [Full Text] [PDF] Supplemental Data  

Summary: A novel 193-bp Gsg2 haspin DNA sequence introduces specific, bidirectional, and synchronous expression in haploid germ cells and may be regulated by binding with germ cell-specific nuclear complexes gamete biology, testis, gene regulation, spermatid, spermatogenesis, GC-rich, integrin, intronless, methylation, transcription.

Toxicology:

C. Edwin Garner, C. Sloan, S.C.J. Sumner, J. Burgess, J. Davis, A. Etheridge, A. Parham, and B.I. Ghanayem

CYP2E1-Catalyzed Oxidation Contributes to the Sperm Toxicity of 1-Bromopropane in Mice
Biol Reprod 2007 76: 496-505. [Abstract] [Full Text] [PDF]  

Summary: Metabolism of 1-bromopropane is mediated in part by CYP2E1, and activation via this enzyme may contribute to the male reproductive toxicity of this chemical.

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