Search Immortality Topics:

Page 11234..1020..»

Human Reproductive System – thoughtco.com

Posted: September 15, 2019 at 5:44 pm

The reproductive system is necessary for the production of new living organisms. The ability to reproduce is a basiccharacteristic of life. Insexual reproduction, two individuals produce offspring that have genetic characteristics from both parents. The primary function of the reproductive system is to produce male and femalesex cellsand to ensure the growth and development of offspring. The reproductive system is comprised of male and female reproductive organs and structures. The growth and activity of these organs and structures are regulated byhormones. The reproductive system is closely associated with otherorgan systems, particularly theendocrine systemand urinary system.

Both male and female reproductive organs have internal and external structures. Reproductive organs are considered to be either primary or secondary organs. The primary reproductive organs are thegonads(ovaries and testes), which are responsible forgamete(sperm and egg cell) and hormone production. The other reproductive structures and organs are considered secondary reproductive structures. Secondary organs aid in the growth and maturation of gametes and developing offspring.

The male reproductive system consists of sexual organs, accessory glands, and a series of duct systems that provide a pathway for fertile sperm cells to exit the body. Male reproductive structures include the penis, testes, epididymis, seminal vesicles, and prostate gland.

The reproductive system can be impacted by a number of diseases and disorders. This includes cancer that may develop in reproductive organs such as the uterus, ovaries, testicles, or prostate. Disorders of the female reproductive system include endometriosis (endometrial tissue develops outside of the uterus), ovarian cysts, uterine polyps, and prolapse of the uterus. Disorders of the male reproductive system include testicular torsion (twisting of the testes), hypogonadism (testicular under-activity resulting in low testosterone production), enlarged prostate gland, hydrocele (swelling in the scrotum), and inflammation of the epididymis.

Gametes are produced by a two-part cell division process calledmeiosis. Through a sequence of steps, thereplicated DNAin a parent cell is distributed among fourdaughter cells. Meiosis produces gametes with one half the number ofchromosomesas the parent cell. Because these cells have one half the number of chromosomes as the parent cell, they are calledhaploidcells. Human sex cells contain one complete set of 23 chromosomes. When sex cells unite atfertilization, the two haploid cells become onediploidcell that contains 46 chromosomes.

The production of sperm cells is known asspermatogenesis. This process occurs continuously and takes place within the male testes. Hundreds of millions of sperm must be released in order for fertilization to take place.Oogenesis(ovum development) occurs in the female ovaries. InmeiosisIof oogenesis, daughter cells are divided asymmetrically. This asymmetrical cytokinesis results in one large egg cell (oocyte) and smaller cells called polar bodies. The polar bodies degrade and are not fertilized. After meiosis Iiscomplete, the egg cell is called a secondary oocyte. The haploid secondary oocyte will only complete the second meiotic stage if it encounters a sperm cell and fertilization begins. Once fertilization is initiated, the secondary oocyte completesmeiosis IIand is then called an ovum. The ovum fuses with the sperm cell, and fertilization is complete. The fertilized ovum is called a zygote.

See original here:
Human Reproductive System - thoughtco.com

Recommendation and review posted by G. Smith

Adult Stem Cell FAQs | Treatment, Cost & General Information

Posted: September 15, 2019 at 5:43 pm

Be aware that representatives at certain stem cell clinics/companies will claim your stem cells are too old to provide therapeutic benefit when utilized as a treatment. This is simply not true since a vast number of clinical trials have demonstrated the therapeutic effects of stem cells derived from individuals of advanced age. This therapeutic effect has been reliably repeated and well documented in medical literature.

However, many representatives will argue that placental/amniotic/umbilical cord cells or cell products are a more appropriate therapy for individuals of a certain age. Unfortunately, this is a marketing ploy with the intent of selling a treatment or add-on treatment of little value. Placental/amniotic cell treatments utilize off-the-shelve products that lack real therapeutic benefit. A recent study demonstrated that these products contained only dead cells or cell fragments. Further, these products contained very low levels of growth factors, levels no higher than ordinary blood. Be highly cautious of any clinic or company that claims to provide living placental/amniotic cells as part of their therapy. This likely indicates the cells are from an unknown source and could be contaminated with any number of viral or bacterial pathogens.

Read more:
Adult Stem Cell FAQs | Treatment, Cost & General Information

Recommendation and review posted by G. Smith

Stem Cell Therapy For Neuropathy | Stem Cell Therapy

Posted: September 15, 2019 at 5:43 pm

Stem Cell Therapy for Neuropathy

Neuropathy is a condition characterized by pain of the limbs, such as arms, hands, feet, and/or legs. Neuropathic (nerve-related) pain is initiated/caused by dysfunction of the nervous system. Most common symptoms of neuropathy include extreme sensitivity and dramatic response to pain. A new, innovative treatment for neuropathy is stem cell therapy.

Neuropathy and nerve-related pain reduces human well-being and is difficult to manage. Around 100 million people in the United States report chronic pain. The use of stem cells has proven to be effective at lessening the pain associated with diabetic neuropathy and peripheral nerve pain. Clinical evidence shows that stem cell therapy provides the best results and could decrease the use of pain medication.

How do stem cells work to treat neuropathic pain?

Stem cell therapy shows great promise for regenerative medicine in the treatment of peripheral neuropathy. Stem cells help slow the disease progression. In rat subjects, bone marrow-derived stem cells have shown promise in treating neurodegenerative disease, which proves neuroprotective when given intravenously (IV). Stem cell implantation has also been shown to work in the repair of axon regeneration and synapse reformation, which are structures of the nerve cell.

Do stem cells help treat pain?

Stem cell differentiation is thought to be the key to pain control. Serotonergic neural precursor cell grafts reduce hyperexcitability caused by pain. Neuropathic pain causes a decrease in the activity and number of neurons called GABA. The stem cells express anti-nociceptive molecules and/or trophic factors that have been found to relieve neuropathic pain. In addition, stem cells are used as pumps to deliver anti-nociceptive molecules close to the pain processing sites of nerve damage.

Which cells are most used in the treatment of peripheral neuropathy?

Mesenchymal stem cells (MSCs) are showing the most promise in pain care research. These cells are a group of progenitor cells of mesodermal origin, which are found in adult bone marrow. These cells give rise to skeletal muscle cells, fat, blood, and connective tissues. MSCs also have a stable phenotype and are easily transported from the laboratory to physician office. These cells also migrate to the site of nerve damage and have good immunosuppressive properties.

Do clinical studies support the use of stem cells for peripheral neuropathy?

In a recent study in The Journal of Pain Research, researchers used stem cells for neuropathy relief successfully. They found that the treatment produced 60% relief at a six month time point. Because neuropathic pain impacts quality of life, it can be quite costly to the healthcare system. Researchers are continuing to study this problem.

Tulane University Center for Stem Cell Research conducted many studies using MSCs. They found these cells were effective and safe for treating inflammatory disease, such as peripheral neuropathy. The cells were found to optimize their anti-inflammatory effects. In mice subjects, researchers noted a 40% improvement rate.

What results can I expect with stem cell therapy for neuropathy?

Response to stem cell therapy usually starts within a few weeks to months. Patients often report effectiveness within 3-6 months. Patients with peripheral neuropathy respond over 60% of the time, according to studies. A second treatment may become necessary depending on the individual and therapy also involves several additional modalities such as light therapy and nutritional optimization.

Resources

Siniscalco D, Rossi F, & Maione S (2007). tem cell therapy for neuropathic pain treatment. J Stem Cells Regen Md, 3(1), 2-11.

A preliminary report on stem cell therapy for neuropathic pain in humans, Vickers et al,J Pain Res. 2014; 7: 255263.

Read the original:
Stem Cell Therapy For Neuropathy | Stem Cell Therapy

Recommendation and review posted by G. Smith

Stem Cell Therapy for Neuropathy | Mayo Clinic Connect

Posted: September 15, 2019 at 5:43 pm

Hi @jlsoerensOne of the focus areas on Mayo Clinic's Regenerative Medicine Program is in neuroregeneration. You can read more here: https://www.mayo.edu/research/centers-programs/center-regenerative-medicine/focus-areas/neuroregeneration Scroll down the page and you can read clinical research being done specifically for peripheral nerve regeneration and repair.

Unfortunately, because of the complexity of the brain and spinal cord, little spontaneous regeneration, repair or healing occurs. Therefore, brain damage, paralysis from spinal cord injury and peripheral nerve damage are often permanent and incapacitating.

To learn more, you may wish to contact Mayo Clinics Regenerative Medicine free Consult Service. If you call them, you will talk to a live person who will provide more information, research, and advice on seeking stem cell therapy from reputable providers, even if that provider is not Mayo Clinic. Their primary goal is to educate and help you find effective treatment. Furthermore, you can add your name to a database to be notified when additional studies and information become available. Heres more information about the stem cell Consult Service http://www.mayo.edu/research/centers-programs/center-regenerative-medicine/patient-care/clinical-services/regenerative-medicine-consult-service. Or simply call 1-844-276-2003 to speak with one of our experts.

I also feel it important to add it is so important to do your homework and due diligence when researching new treatment options. Stem cells offer a lot of hope. But where these is hope, there is hype and charlatans. FDA acts to remove unproven, potentially harmful treatment used in stem cell centers targeting vulnerable patients https://www.fda.gov/newsevents/newsroom/pressannouncements/ucm573427.htm

You can read more about stem cells on the FDAs website here: https://www.fda.gov/AboutFDA/Transparency/Basics/ucm194655.htm

See original here:
Stem Cell Therapy for Neuropathy | Mayo Clinic Connect

Recommendation and review posted by G. Smith

Nanoparticles-mediated drug delivery approaches for cancer …

Posted: September 14, 2019 at 4:00 pm

the next decade (www.immortalitymedicine.tv). This review will primary addresses on latest develop-ment of different targeting strategies for nanoparticles drug delivery systems with a focus on formulations that specifically target to tumor cells. Passive cancer targeting This type of targeting uses drug carrier complex that

See original here:
Nanoparticles-mediated drug delivery approaches for cancer ...

Recommendation and review posted by G. Smith

augmentinforce.50webs.com Competitive Analysis, Marketing …

Posted: September 14, 2019 at 4:00 pm

augmentinforce.50webs.com Competitive Analysis, Marketing Mix and Traffic vs. healthaxis.wordpress.com health-axis.com biocharisma.com immortalitymedicine.tv Welcome to Alexa's Site Overview

See original here:
augmentinforce.50webs.com Competitive Analysis, Marketing ...

Recommendation and review posted by G. Smith


Page 11234..1020..»