Evolution of the nervous system: conserved GnRH

Clues to nervous system evolution found in nerve-less sponge June 18, 2012

“Is the human brain just a lot more of the same stuff, or has it changed in a qualitative way?”

My comment:

The most likely similarity is the role of glucose in the regulation of gonadotropin releasing hormone (GnRH) secreting neurons of the mammalian brain. Food deprivation suppresses GnRH-dependent pulsatile luteinizing hormone (LH) secretion in rats, sheep, monkeys and humans, which is consistent with inhibition of pulsatile GnRH release.

GnRH, is the molecule Kochman (2012) indicated was perfectly constructed because it hasn’t changed during the past 400 million years, although diversification of its receptor appears to allow for things like pheromone-dependent self / non-self recognition (at the advent of sexual reproduction, which requires a primitive immune system and means for sexual orientation).

GnRH also links nutrient chemicals and pheromones directly to adaptive evolution via the required ecological, social, neurogenic, and cognitive niche construction evidenced by the apparent design in biology.

About James V. Kohl 1307 Articles
James Vaughn Kohl was the first to accurately conceptualize human pheromones, and began presenting his findings to the scientific community in 1992. He continues to present to, and publish for, diverse scientific and lay audiences, while constantly monitoring the scientific presses for new information that is relevant to the development of his initial and ongoing conceptualization of human pheromones. Recently, Kohl integrated scientific evidence that pinpoints the evolved neurophysiological mechanism that links olfactory/pheromonal input to genes in hormone-secreting cells of tissue in a specific area of the brain that is primarily involved in the sensory integration of olfactory and visual input, and in the development of human sexual preferences. His award-winning 2007 article/book chapter on multisensory integration: The Mind’s Eyes: Human pheromones, neuroscience, and male sexual preferences followed an award winning 2001 publication: Human pheromones: integrating neuroendocrinology and ethology, which was coauthored by disinguished researchers from Vienna. Rarely do researchers win awards in multiple disciplines, but Kohl’s 2001 award was for neuroscience, and his 2007 “Reiss Theory” award was for social science. Kohl has worked as a medical laboratory scientist since 1974, and he has devoted more than twenty-five years to researching the relationship between the sense of smell and the development of human sexual preferences. Unlike many researchers who work with non-human subjects, medical laboratory scientists use the latest technology from many scientific disciplines to perform a variety of specialized diagnostic medical testing on people. James V. Kohl is certified with: * American Society for Clinical Pathology * American Medical Technologists James V. Kohl is a member of: * Society for Neuroscience * Society for Behavioral Neuroendocrinology * Association for Chemoreception Sciences * Society for the Scientific Study of Sexuality * International Society for Human Ethology * American Society for Clinical Laboratory Science * Mensa, the international high IQ society