Sperm Cell Insights May Aid Stem Cell Research
... reduced the stem cell population in the flies' testis
to zero and found that only 60 percent of testis
in the genetically altered flies regained stem cells, compared with 97 percent of testis
in normal flies.
"We know now that in the fly ...
Penn vet researchers identify a critical growth factor that stimulates sperm stem cells to thrive
... team previously discovered that the niche in the testis
of a newborn male mouse supported stem cells and ... demonstrated that it was the SSC niche in the testis
that was failing in older males long before the ... of SSCs provides the foundation for testis
function and fertility. Using DNA microarray ...
Living with females extends the reproductive life of the male mouse, says Penn veterinary researcher
... cells, or SSCs. Brinster's team first discovered that the niche in the testis
of the newborn male mouse supports the stem cell and its differentiation ... of the stem cell. Therefore, in old males it was the SSC niche in the testis
that was failing long before the SSC, which was relatively long-lived.
European Society for Pediatric Urology to organize anniversary congress in Amsterdam
... this CME-accredited meeting.
Apart from lectures, the programme also includes panel discussions (for example about 'Hormonal aspects of undescended testis
current status'), a workshop and abstract presentations.
The paediatric nurses (ESPUN) offer a separate programme, including 4 sessions (Session ...
Medical imaging benefits far outweigh radiation risks
... (MOC) guarantees into every nuclear medicine professional's practice.
Positron emission tomography (PET)a state-of-the-art molecular imaging testis
a noninvasive, painless molecular imaging technology that allows physicians to determine how organs and tissues inside the body are functioning on a ...
One in Three Cancer Survivors on Unemployment Line
... cancer and cancers of the female reproductive organs, but unemployment rates were not higher for survivors of blood cancers, prostate cancers or testis
cancers compared to controls," she added.
Results of the study were published in the Feb. 18 issue of the Journal of the American Medical ...
The Obama Cancer Plan Should Prioritize Prevention, Says Cancer Prevention Coalition
... to 2005, when the latest NCI statistics were published. These include malignant melanoma (172%), Non-Hodgkin's lymphoma (79%), thyroid (116%), testis
(60%), and childhood cancers (38%).
As widely reported in the November 26, 2008, press, the NCI claimed that the incidence of new cancers has ...
Annual Congress European Association of Urology: highlights in Stockholm
... Peter Albers (DE)). The latter meeting will discuss techniques in organ-sparing surgery and the latest updates on chemo and radiation therapy for testis
Third-day sessions will highlight current challenges in urology starting with a plenary session on the evolution of new technologies and ...
Testicular cancer gauge often not used
Serum-based tumor markers, which are one indicator of the presence of cancer cells, are helpful in several aspects of the care of patients with testis
cancer, including diagnosis, prognostication and surveillance for disease recurrence following treatment. Doctors typically rely on a series of three ...
JCI online early table of contents: March 13, 2008
... PICK: Pinpointing when you become a man
Cryptorchidism, the absence in the scrotum of one or both testes (usually because of the failure of the testis
to descend), and hypospadias, the abnormal positioning of the opening of the urethra, are common birth defects of the male genitalia and are risk ...
Testis in Medical Products
MIS/AMH ELISA Test
Description:... (3). The structure of a specific receptor for MIS/AMH has also been isolated and characterized (4).
MIS/AMH is produced by the Sertoli cells of the testis
in the male, and by ovarian granulosa cells in the female. During embryonic development in males, secretion of MIS/AMH from testicular Sertoli cells ...
Company:Diagnostic Systems Laboratories, Inc.
Testis in Medical Dictionary
... a generous donation from: ... The appendix testis
referrs to a congenital appendage that is located along the testis
. This appendage has no function, yet more than ... are born with them. Torsion of the appendix testis
occurs when an appendage twists. Appendix ( ...
... small tubes covering the back and sides of the testis
, where sperm are stored and mature after leaving the testis
before they are transported to the vas deferens ... , a cordlike structure just behind the testis
. The globus major is the head of the epididymis ...
... . Alternative Names: Epididymo- orchitis ; testis
infection Causes, incidence , and risk ... Below ... Orchitis : Inflammation of the testis
(male sex organ ). There are many causes of inflammation of the testis
including infections (such as mumps ), ...
: The testis
(or testicle) is the male sex gland . A pair of ... skin called the scrotum . The appendix testis
referrs to a congenital appendage that is ...
... . [1-3] Mature teratoma and epidermoid cyst in the prepubertal testis
are relatively common benign lesion s and may be amenable to testis
-sparing surgery . This article outlines what a cyst is and ...
... ovaries ( ovulation ). Alternate Names : Gonad s - Male, Testicles, testis
Definition The testes are two egg-shaped male reproductive organ s ... intersex condition in which there appears some male structures ( gonad , testis
), as well as a uterus , vagina , and fallopian tube s. Congenital ...
... cases of polyarteritis nodosa . Orchitis : Inflammation of the testis
(male sex organ ). There are many causes of inflammation of the testis
including infections (such as mumps ), disease s (such as ...
... ; ectophyte; ectopia; ectopia cloacae; ectopia cordis; ectopia lentis; ectopia macula e; ectopia pupil lae congenita; ectopia renis; ectopia testis
; ectopia vesicae; ectopic; ectopic ACTH ... CUSHING'S SYNDROME - An increased concentration of glucocorticoid hormone ( ACTH ) in the ...
... ectopic pregnancy ; ectopic pregnancy , symptoms of; ectopic rhythm; ectopic schistosomiasis ; ectopic tachycardia ; ectopic teratosis; ectopic testis
; ectopic thyroid; ectopic ureter ; ectoplacental; ectoplacental cavity ; ... Polyp A growth of tissue protruding into a body cavity , such ...
... turning of the head ... pregnancy , symptoms of; ectopic rhythm; ectopic schistosomiasis ; ectopic tachycardia ; ectopic teratosis; ectopic testis
; ectopic thyroid; ectopic ureter ; ectoplacental; ectoplacental cavity ; ectoplasm; ectoplasmatic; ectoplasmic tube contraction ; ... This ...
Testis in Biological News
Playing it safe
... in culturing a clearly defined cell type from the testis
of adult mice and converting these cells into ... process. ( Cell Stem Cell , July 2, 2009)
is a sensitive organ and an astonishing one at ... researchers have long assumed that cells from the testis
have a similar potential as in embryonic stem ...
Stem cell chicken and egg debate moves to unlikely arena: the testes
... cells that comprise a specialized niche in the testis
of fruit flies actually emerge from adult stem ... thought that a fruit fly's allotment of testis
niche cells was handed out at birth and meant to ... by first author Justin Voog, actually caught a testis
stem cell population in the act of turning into ...
Female embryonic sexual development driven by universal factor
... led the study.
"They have a common primordium, the foundation for both testis
and ovary," he said. "Only at a certain stage of development does this ... cast of molecules known to be involved in transforming the primordium into testis
or ovary. This molecule, beta-catenin, is an important regulator of cell ...
Human adult testes cells can become embryonic-like
... are among the first scientists to show that human testes stem cells can become embryonic stem-like cells, and they have done this work using testis
tissue from organ donors, which they say has provided enough valuable tissue to allow them to make their discoveries. While they have published their ...
6th ESOU Meeting
... such as prostate cancer (PCa), renal cell carcinoma and bladder cancer were the focus of last year's meeting in Berlin. Apart from these conditions, testis
cancer will be another highlight of the forthcoming meeting in Istanbul.
Prof. Levent Trkeri (Istanbul, Turkey), ESOU board member and local ...
ACS PressPac -- Sept. 17, 2008
... for new male contraceptives as well as medications for treating infertility. JS
ARTICLE #4 FOR IMMEDIATE RELEASE
"Proteomic Analysis of testis
Biopsies in Men Treated with Injectable Testosterone Undecanoate Alone or in Combination with Oral Levonorgestrel as Potential Male Contraceptive" ...
Diabetes linked to male infertility; excess sugars in the body have direct effect on sperm quality
... compounds responsible for cell growth that help stabilise the structure of DNA. We also found that spermatogenesis 20, a factor unique to the testis
and whose function remains unknown, was greatly increased. Taken together, these factors indicate clearly that having diabetes has a direct influence ...
Veterinary college researcher studying brain tumors in people and animals
... that when astrocytomas spontaneously arise in people, they over-express three proteins: interleukin 13 receptor alpha2 (IL-13R), which is a cancer testis
tumor like agent; EphA2, a tyrosine kinase receptor; and fos-related antigen 1, an AP-1 transcription factor.
Rossmeisl and colleagues working in ...
Human testis harbors HIV-1 in resident immune cells
... report by Roulet et al., “Susceptibility of human testis
to human immunodeficiency virus-1 infection in ... led by Dr. Nathalie Dejucq-Rainsford examined testis
tissue for the presence of HIV receptors. They ... by using explanted organ cultures in which human testis
tissue was grown in culture. ...
Genetic tug of war determines sexual differentiation
... gonad before it commits to either a male testis
or a female ovary. If this equilibrium is tipped ... gonad has the ability to transform either into a testis
or an ovary. During the earliest stages of ... Fgf9 become active and the process of becoming a testis
"The expression of these three genes ...
Testis in Biological Technology
New Report Just Published: World Prostate Cancer Therapeutics Market Report
... Five-Year Cancer Survival Rate Among US Males by
Type - Prostate and testis
corresponding Graph/Chart) II-10
Table 8: ... Five-Year Cancer Survival Rate Among US Males by
Type - Prostate and testis
corresponding Graph/Chart) III-8
Table 33: ...
Mouse Brain or Impressionist Painting?
... University of Massachusetts for
her depiction of the mitotic spindle in a diving cell; Earl Nishiguchi of
the University of Hawaii for his fruit fly testis
image; Jan Schmoranzer of
Columbia University for his photo of serum starved fibroblasts; and M.R.
Dadpour of the University of Tabriz, Iran, for his ...
Of mice and men: new male contraceptives successful in rodents and humans
... with vitamin A receptors in the testes. Her team tested it in mice, and it worked with no health effects. "The receptors are everywhere, but the testis
is exquisitely sensitive to the drug. So we can use a dose that is so low it has no effect on the rest of the body."
So the drug doesn't harm ...
Tissue Specificity for Mutation Parallels Tissue Specificity for Cancer
Kidney, liver ... as the urinary bladder (1.7 x 10 -5
versus 1.4 x 10 -5 in controls), testis
(0.39 x 10 -5 versus
0.48 x 10 -5 in controls), and bone marrow (1.7 x ...
Protein Depletion for Plasma and Serum Proteomic Analysis
... discovery. In addition,
proteomic profiles of human tissues like the brain, heart, liver, lung,
muscle, pancreas, spleen, and testis
are now being explored . While
the usefulness of these alternative biological fluids or tissues has not
yet been clearly ...
New Kit Generates Exceptionally Pure Total RNA for RT-PCR
... to approximately 0.1%
or less, 0.1 to 1%, and 1% of total RNA, respectively) 5 in
total RNA isolated from mouse liver and testis
using the Absolutely RNA
For the experiment shown in Figure
3 , the ProSTAR first strand RT-PCR kit was used to ...
Testis in Biological Products
Testis in Biological Definition
... to finally become mature testicular spermatozoa. They are then released into the lumen of the seminiferous tubule and travel with fluid from the testis
into the epididymis for further maturation processes allowing them to swim forward and fertilize an ovum.
... the total DNA in cells. The chromosome may be used to trace parental lineage.
It is one of two sex chromosomes ; it contains the genes that cause testis
development, thus determining maleness .
2 Chromosomal conditions related to ...
Testis in Biological Dictionary
... tubules exposed through an incision in the testis
capsule. ... The slides contain, seminiferous ... tubules are the exocrine portion of the testis
producing and " ... seminiferous tubules ... for ... The seminiferous tubules of the testis
provide a specialized ... seminiferous tubules ...
... The Y chromosome is the sex-determining chromosome in most mammals, including humans. In mammals, it contains the gene SRY, which triggers testis
development, thus determining sex. The human Y chromosome is composed of ... The Y chromosome spans about 58 million base pairs ...
... ... 4.2 Diseases and conditions that affect the testes . 4.3 Effects of exogenous hormones ... Tes·te n. [So called fr. L. teste , abl. of testis
a witness, because this was formerly the ... Failure of the testes to descend is known as cryptochordism. ... Online Medical Dictionary and ...
... in mature sperm. ... configuration during spermiogenesis in Drosophila ... This process is spermiogenesis . 3. ... Spermiogenesis ends in the testis
with release of the spermatozoa from the Sertoli cell ...  Spermiogenesis ... providing nourishment, support and possibly hormones ...
... (arrows) ... Labelling is restricted to the cytoplasm of elongating spermatids . ... The release of mature elongated spermatids from the testis
(spermiation) is also ... Early round spermatids in stages I-VII are suppressed to 20% of normal, yet ... Rodent spermatocytes, round and ...
... Spermatogenesis Cytogenetic and ... Given that spermatogenesis relies on, among other things, the normal development ... Diagram of the testis
and spermatogenesis . ... Spermatogenesis is the process of producing sperm with half the number of ... Spermatogenesis occurs in medullary ...
... by a middle ... Normally, by lying in the scrotum , the testicles stay about 6 degrees cooler ... The scrotum of a patient with an undescended testis
can appear underdeveloped. ... Scrotal mass — Comprehensive overview covers symptoms, causes, treatments of abnormalities in the scrotum . ... ...
... ... EFFECT OF SEASON AND GONADOTROPIN ON TESTICULAR INTERSTITIAL CELLS OF CALIFORNIA QUAIL ... THAT the interstitial (Leydig) cells of the testis
are the major source of ... Home > Dogs Home Page > Reproduction > Article: Interstitial Cell Tumor ... An interstitial cell ...
... or female gonads (ovaries), the vernacular, or slang, use ... gonad ( ) n. An organ in animals that produces gametes, especially a testis
or ovary. ... Main article: Development of the gonads ... Development of the gonads The prenatal development of the gonads is a part of the ...
Expressed sequence tag
... and Investigation Kit is a tool dedicated to ... R.N., Souza M.T. Jr. Analysis of expressed sequence tags from Musa acuminata ssp. ... Pig testis
Expressed Sequence Tags (PtEST) database is the collection of ESTs ... organized into these subject databases: Expession Sequence Tag (EST) ...