Gregory M. Weber

Works (13)

Updated: July 5th, 2023 16:04

2007 article

In vitro actions of insulin-like growth factor-I on ovarian follicle maturation in white perch (Morone americana)

Weber, G. M., Moore, A. B., & Sullivan, C. V. (2007, January 21). General and Comparative Endocrinology.

By: G. Weber n, A. Moore n & C. Sullivan n

author keywords: follicle; growth factors; mechanisms of hormone action; meiosis; signaling pathway
MeSH headings : Androstadienes / pharmacology; Animals; Bass; Chromones / pharmacology; Cycloheximide / pharmacology; Dactinomycin / pharmacology; Female; Insulin / pharmacology; Insulin-Like Growth Factor I / pharmacology; Insulin-Like Growth Factor II / pharmacology; Morpholines / pharmacology; Ovarian Follicle / drug effects; Phosphoinositide-3 Kinase Inhibitors; Recombinant Proteins / pharmacology; Sexual Maturation / drug effects; Steroids / biosynthesis; Wortmannin
topics (OpenAlex): Reproductive biology and impacts on aquatic species; Reproductive Biology and Fertility; Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
TL;DR: The IGFs have shared and disparate actions on ovarian follicle maturation among Morone species that appear to be linked to reproductive strategy and exhibit similarities in mechanisms of action. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2005 article

Insulin-Like Growth Factor-I Induces Oocyte Maturational Competence but Not Meiotic Resumption in White Bass (Morone chrysops) Follicles In Vitro: Evidence for Rapid Evolution of Insulin-Like Growth Factor Action1

Weber, G. M., & Sullivan, C. V. (2005, January 13). Biology of Reproduction.

By: G. Weber* & C. Sullivan n

author keywords: follicle; growth factors; mechanisms of hormone action; meiosis; signal transduction
MeSH headings : 1-Octanol / pharmacology; Androstadienes / pharmacology; Animals; Bass; Chromones / pharmacology; Cortodoxone / analogs & derivatives; Cortodoxone / pharmacology; Cycloheximide / pharmacology; Dactinomycin / pharmacology; Enzyme Inhibitors / pharmacology; Female; Gap Junctions / drug effects; Heptanol / pharmacology; Humans; In Vitro Techniques; Insulin / pharmacology; Insulin-Like Growth Factor I / pharmacology; Meiosis / drug effects; Morpholines / pharmacology; Oocytes / cytology; Oocytes / drug effects; Oocytes / physiology; Ovarian Follicle / cytology; Ovarian Follicle / drug effects; Ovarian Follicle / physiology; Phosphoinositide-3 Kinase Inhibitors; Recombinant Proteins / pharmacology; Wortmannin
topics (OpenAlex): Reproductive Biology and Fertility; Reproductive biology and impacts on aquatic species; Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
TL;DR: It is suggested that gap junctions and PI 3-K activity are necessary for GtH and IGF-I to induce and maintain OMC in white bass and suggests rapid evolution of the reproductive actions of IGF- meiotic resumption among temperate basses. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2005 article

Involvement of phospholipase C and intracellular calcium signaling in the gonadotropin-releasing hormone regulation of prolactin release from lactotrophs of tilapia (Oreochromis mossambicus)

Tipsmark, C. K., Weber, G. M., Strom, C. N., Grau, E. G., Hirano, T., & Borski, R. J. (2005, January 9). General and Comparative Endocrinology, Vol. 142, pp. 227–233.

By: C. Tipsmark n, G. Weber*, C. Strom n, E. Grau*, T. Hirano * & R. Borski n 

author keywords: GnRH; calcium signaling; prolactin; tilapia; lactotrophs
MeSH headings : Animals; Calcium / metabolism; Calcium Signaling / physiology; Estrenes / pharmacology; Gallic Acid / analogs & derivatives; Gallic Acid / pharmacology; Gonadotropin-Releasing Hormone / physiology; Inositol 1,4,5-Trisphosphate / metabolism; Male; Pituitary Gland / cytology; Pituitary Gland / drug effects; Pituitary Gland / metabolism; Platelet Aggregation Inhibitors / pharmacology; Prolactin / metabolism; Pyrrolidinones / pharmacology; Tilapia / metabolism; Type C Phospholipases / antagonists & inhibitors; Type C Phospholipases / physiology
topics (OpenAlex): Hypothalamic control of reproductive hormones; Growth Hormone and Insulin-like Growth Factors; Regulation of Appetite and Obesity
TL;DR: Findings suggest that GnRH may elicit its PRL releasing effect by increasing Ca(i)2+, which may be derived from PLC/IP3-induced mobilization of Ca2+ from intracellular stores along with influx through L-type voltage-gated Ca 2+ channels. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2003 article

Induced maturation and spawning: opportunities and applications for research on oogenesis

Sullivan, C. V., Hiramatsu, N., Kennedy, A. M., Clark, R. W., Weber, G. M., Matsubara, T., & Hara, A. (2003, March 1). Fish Physiology and Biochemistry.

By: C. Sullivan n, N. Hiramatsu n, A. Kennedy n, R. Clark  n, G. Weber*, T. Matsubara*, A. Hara*

author keywords: atresia; aquaculture; oocyte maturation; ovarian follicle; teleost; vitellogenin
topics (OpenAlex): Reproductive biology and impacts on aquatic species; Aquaculture Nutrition and Growth; Fish Ecology and Management Studies; Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
TL;DR: Investigation of temperate basses research has revealed that accumulation of neutral lipid droplets and deposition of vitellogenin-derived yolk proteins in growing oocytes are independent processes with different sensitivities to changing day length and water temperature. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2002 article

Vitellogenin-Derived Yolk Proteins of White Perch, Morone americana: Purification, Characterization, and Vitellogenin-Receptor Binding1

Hiramatsu, N., Hara, A., Hiramatsu, K., Fukada, H., Weber, G. M., Denslow, N. D., & Sullivan, C. V. (2002, August 1). Biology of Reproduction.

By: N. Hiramatsu n, A. Hara*, K. Hiramatsu n, H. Fukada *, G. Weber n, N. Denslow *, C. Sullivan n

author keywords: estradiol; female reproductive tract; gamete biology; oocyte development; ovary
MeSH headings : Amino Acid Sequence; Amino Acids / metabolism; Animals; Bass / physiology; Binding, Competitive; Blotting, Western; Chromatography, Gel; Digoxigenin; Egg Proteins / chemistry; Egg Proteins / isolation & purification; Egg Proteins / metabolism; Electrophoresis, Polyacrylamide Gel; Female; Fishes / metabolism; In Vitro Techniques; Ligands; Membrane Proteins / metabolism; Molecular Sequence Data; Molecular Weight; Oocytes / metabolism; Ovary / metabolism; Phosphorus / metabolism; Protein Binding; Receptors, Cell Surface / chemistry; Receptors, Cell Surface / isolation & purification; Receptors, Cell Surface / metabolism; Vitellogenins / chemistry; Vitellogenins / metabolism
topics (OpenAlex): Reproductive biology and impacts on aquatic species; Aquaculture Nutrition and Growth; Aquaculture disease management and microbiota
TL;DR: P purify and characterize vitellogenin-derived yolk proteins of white perch, and develop a nonisotopic receptor binding assay for vitelliogenin, to identify the yolk protein domains of viteLLogenin recognized by the ovarian vitellingogenin receptor. (via Semantic Scholar)
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14. Life Below Water (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2001 article

In vitro hormone induction of final oocyte maturation in striped bass (Morone saxatilis) follicles is inhibited by blockers of phosphatidylinositol 3-kinase activity

Weber, G. M., & Sullivan, C. V. (2001, June 1). Comparative Biochemistry and Physiology Part B Biochemistry and Molecular Biology.

By: G. Weber n & C. Sullivan n

author keywords: gap junction; gonadotropin; insulin-like growth factor; maturation inducing steroid; meiosis; oocyte development; phosphatidylinositol 3-kinase; signal transduction; Wortmannin; LY 294002
MeSH headings : Androstadienes / pharmacology; Animals; Bass / physiology; Chorionic Gonadotropin / pharmacology; Chromones / pharmacology; Enzyme Inhibitors / pharmacology; Female; Gap Junctions / drug effects; Humans; Insulin-Like Growth Factor I / pharmacology; Morpholines / pharmacology; Oocytes / cytology; Oocytes / drug effects; Oocytes / enzymology; Oocytes / growth & development; Phosphatidylinositol 3-Kinases / metabolism; Phosphoinositide-3 Kinase Inhibitors; Wortmannin
topics (OpenAlex): Ovarian function and disorders; Reproductive Biology and Fertility; Reproductive Physiology in Livestock
TL;DR: It is shown that 20beta-S-induced GVBD is also attenuated by 1 mM 1-heptanol or 1-octanol without being affected by incubation with 3 mM ethanol, which suggests that PI 3-K activity is required for GtH- MIS- and IGF-I induction of GV BD in striped bass. (via Semantic Scholar)
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14. Life Below Water (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2001 article

Isolation and Characterization of Myostatin Complementary Deoxyribonucleic Acid Clones from Two Commercially Important Fish: Oreochromis mossambicus and Morone chrysops

Rodgers, B. D. (2001, April 1). Endocrinology.

By: B. Rodgers *

topics (OpenAlex): Muscle Physiology and Disorders; GDF15 and Related Biomarkers; RNA Research and Splicing
TL;DR: The results suggest that the biological actions of MSTN in the tilapia and possibly in other fishes may not be limited to myocyte growth repression, but may additionally influence different cell types and organ systems. (via Semantic Scholar)
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14. Life Below Water (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2001 article

Sequence conservation among fish myostatin orthologues and the characterization of two additional cDNA clones from Morone saxatilis and Morone americana

Rodgers, B. D., & Weber, G. M. (2001, June 1). Comparative Biochemistry and Physiology Part B Biochemistry and Molecular Biology.

By: B. Rodgers * & G. Weber n

author keywords: growth; development; myostatin; GDF-8; skeletal muscle; aquaculture; Morone
MeSH headings : Amino Acid Sequence; Animals; Base Sequence; Bass / genetics; Cloning, Molecular; Conserved Sequence / genetics; DNA, Complementary / genetics; Evolution, Molecular; Molecular Sequence Data; Myostatin; Perches / genetics; Sequence Alignment; Transforming Growth Factor beta / chemistry; Transforming Growth Factor beta / genetics; Zebrafish Proteins
topics (OpenAlex): Muscle Physiology and Disorders; Spaceflight effects on biology; Congenital heart defects research
TL;DR: The identification and characterization of novel cDNA clones from two additional Morone species and high level of sequence conservation among all known MSTN orthologues suggests that the structure/function relationship of each is equally well conserved among vertebrates. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2000 article

Effects of Insulin-Like Growth Factor-I on In Vitro Final Oocyte Maturation and Ovarian Steroidogenesis in Striped Bass, Morone saxatilis1

Weber, G. M., & Sullivan, C. V. (2000, October 1). Biology of Reproduction.

By: G. Weber n & C. Sullivan n

author keywords: follicle; growth factors; hCG; meiosis; oocyte development; ovary
MeSH headings : 1-Octanol / pharmacology; Animals; Bass; Cattle; Chorionic Gonadotropin / pharmacology; Cortodoxone / analogs & derivatives; Cortodoxone / metabolism; Cyanoketone / pharmacology; Cycloheximide / pharmacology; Dactinomycin / pharmacology; Dihydrotestosterone / analogs & derivatives; Dihydrotestosterone / pharmacology; Female; Heptanol / pharmacology; Humans; Hydroxysteroid Dehydrogenases / antagonists & inhibitors; In Vitro Techniques; Insulin / pharmacology; Insulin-Like Growth Factor I / pharmacology; Insulin-Like Growth Factor II / pharmacology; Oocytes / drug effects; Oocytes / physiology; Ovary / drug effects; Ovary / metabolism; Peptide Fragments / pharmacology; Recombinant Proteins / pharmacology; Steroids / metabolism; Transport Vesicles / drug effects; Uncoupling Agents / pharmacology
topics (OpenAlex): Reproductive Biology and Fertility; Reproductive biology and impacts on aquatic species; Ovarian function and disorders
TL;DR: Observations indicate that IGF-I can induce GVBD via MIS- and transcription-independent pathways without coupled gap junctions between oocytes and granulosa cells or among granuleosa cells, but requires protein synthesis to do so. (via Semantic Scholar)
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14. Life Below Water (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2000 article

Morpho-physiological predictors of ovulatory success in captive striped bass (Morone saxatilis)

Weber, G. M., King, W., Clark, R. W., Hodson, R. G., & Sullivan, C. V. (2000, August 1). Aquaculture.

By: G. Weber n, W. King n, R. Clark  n, R. Hodson n & C. Sullivan n

author keywords: Morone; IGF-I; oocyte maturation; spawning; broodstock
topics (OpenAlex): Reproductive biology and impacts on aquatic species; Aquaculture Nutrition and Growth; Fish Ecology and Management Studies
TL;DR: This study evaluates morpho-physiological characters as predictors of ovulatory success in cultured striped bass, Morone saxatilis, that could be used by farmers to select females for induced spawning. (via Semantic Scholar)
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14. Life Below Water (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1999 article

Changes in serum concentrations and pituitary content of the two prolactins and growth hormone during the reproductive cycle in female tilapia, Oreochromis mossambicus, compared with changes during fasting

Weber, G. M., & Grau, E. G. (1999, November 1). Comparative Biochemistry and Physiology Part C Pharmacology Toxicology and Endocrinology.

By: G. Weber n & E. Grau*

author keywords: behavior; brooding; fish; metabolism; osmoregulation; parental care; reproduction; teleost
MeSH headings : Analysis of Variance; Animals; Fasting; Female; Growth Hormone / blood; Growth Hormone / metabolism; Pituitary Gland / metabolism; Prolactin / blood; Prolactin / metabolism; Reproduction / physiology; Tilapia / physiology
topics (OpenAlex): Aquaculture Nutrition and Growth; Growth Hormone and Insulin-like Growth Factors; Reproductive biology and impacts on aquatic species
TL;DR: Increases in the serum concentration of PRLs and GH, and in the pituitary content of GH in response to fasting support the notion that these hormones are involved in the regulation of the use of metabolic substrates in tilapia and suggest GH has actions in reproduction. (via Semantic Scholar)
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14. Life Below Water (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1999 article

Enzyme-Linked Immunosorbent Assay (ELISA) of Vitellogenin in Temperate Basses (GenusMorone): Plasma and In Vitro Analyses

Heppell, S. A., Jackson, L. F., Weber, G. M., & Sullivan, C. V. (1999, May 1). Transactions of the American Fisheries Society.

By: S. Heppell*, L. Jackson, G. Weber* & C. Sullivan*

topics (OpenAlex): Reproductive biology and impacts on aquatic species; Fish Ecology and Management Studies; Aquaculture Nutrition and Growth
TL;DR: Blood levels of the egg yolk precursor vitellogenin (VTG) can be used as a definitive marker for the onset and progress of maturation in female teleosts and an enzyme-linked immunosorbent assay (ELISA) was developed to measure VTG in blood plasma from three species of temperate basses. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
14. Life Below Water (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1997 article

Evidence that gonadotropin-releasing hormone (GnRH) functions as a prolactin-releasing factor in a teleost fish (Oreochromis mossambicus) and primary structures for three native GnRH molecules

Weber, G. M., Powell, J. F., Park, M., Fischer, W. H., Craig, A. G., Rivier, J. E., … Sherwood, N. M. (1997, October 1). Journal of Endocrinology.

By: G. Weber*, J. Powell, M. Park, W. Fischer, A. Craig, J. Rivier*, U. Nanakorn, I. Parhar ...

MeSH headings : Amino Acid Sequence; Animals; Brain Chemistry; Chromatography, High Pressure Liquid; Culture Techniques; Dose-Response Relationship, Drug; Estradiol / pharmacology; Female; Gonadotropin-Releasing Hormone / chemistry; Gonadotropin-Releasing Hormone / pharmacology; Gonadotropin-Releasing Hormone / physiology; Male; Osmosis; Pituitary Gland / chemistry; Pituitary Gland / drug effects; Prolactin / metabolism; Radioimmunoassay; Stimulation, Chemical; Testosterone / pharmacology; Tilapia / physiology
topics (OpenAlex): Hypothalamic control of reproductive hormones; Reproductive biology and impacts on aquatic species; Aquaculture Nutrition and Growth
TL;DR: The data suggest that GnRH plays a broad role in fish, depending on the species, by affecting not only gonadotropins and growth hormone, but also PRL. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

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