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Full-Text Articles in Physiology
Measurement Of Mullerian Inhibiting Substance Facilitates Management Of Boys With Microphallus And Cryptorchidism, Madhusmita Misra, David Maclaughlin, Patricia Donahoe, Mary Lee
Measurement Of Mullerian Inhibiting Substance Facilitates Management Of Boys With Microphallus And Cryptorchidism, Madhusmita Misra, David Maclaughlin, Patricia Donahoe, Mary Lee
Mary M. Lee
Mullerian inhibiting substance (MIS) is a gonadal hormone expressed in a sexually dimorphic pattern. In males, serum MIS reflects Sertoli cell function and provides an estimate of seminiferous tubular integrity. We examined the role of MIS determination in the evaluation of boys with microphallus (n = 62) and/or cryptorchidism (n = 156). MIS was normal in 69.2% of boys with isolated microphallus compared with 38.1% of boys with microphallus and coexisting cryptorchidism (P < 0.05). In the cryptorchid group, MIS was normal in 46.8%, low in 24.4%, and absent in 28.8%. Normal values for age were associated with testicular tissue, whereas …
Developmentally Regulated Polyadenylation Of Two Discrete Messenger Ribonucleic Acids For Mullerian Inhibiting Substance, Mary Lee, Richard Cate, Patricia Donahoe, Gerald Waneck
Developmentally Regulated Polyadenylation Of Two Discrete Messenger Ribonucleic Acids For Mullerian Inhibiting Substance, Mary Lee, Richard Cate, Patricia Donahoe, Gerald Waneck
Mary M. Lee
Mullerian inhibiting substance (MIS) is a 140-kilodalton homodimeric glycoprotein that causes regression of the Mullerian ducts in male embryos, and may also have a role in both males and females in the regulation of germ cell maturation. We examined the ontogeny of MIS messenger RNA (mRNA) in rat testes from midgestation through adulthood and found two discrete MIS mRNA species that are developmentally regulated. The larger 2.0-kilobase species is abundant at embryonic day 14, then decreases in late gestation, and is barely detectable after birth. The smaller 1.8-kilobase species is first noted at embryonic day 18 and is the major …
Mullerian Inhibiting Substance In Humans: Normal Levels From Infancy To Adulthood, Mary Lee, Patricia Donahoe, Tomonobu Hasegawa, Bernard Silverman, Gretchen Crist, Sharon Best, Yukihiro Hasegawa, Richard Noto, David Schoenfeld, David Maclaughlin
Mullerian Inhibiting Substance In Humans: Normal Levels From Infancy To Adulthood, Mary Lee, Patricia Donahoe, Tomonobu Hasegawa, Bernard Silverman, Gretchen Crist, Sharon Best, Yukihiro Hasegawa, Richard Noto, David Schoenfeld, David Maclaughlin
Mary M. Lee
Mullerian-inhibiting substance (MIS) is a gonadal hormone synthesized by Sertoli cells of the testis and granulosa cells of the ovary. To facilitate the use of MIS for the evaluation of intersex disorders and as a tumor marker in women with MIS-expressing ovarian tumors, we measured MIS in 600 serum samples from males and females. These data show that mean MIS values for males rise rapidly during the first year of life and are highest during late infancy, then gradually decline until puberty. In contrast, MIS values in females are lowest at birth and exhibit a minimal increase throughout the prepubertal …
Mullerian Inhibiting Substance In The Diagnosis And Management Of Intersex And Gonadal Abnormalities, Michael Gustafson, Mary Lee, Lara Asmundson, David Maclaughlin, Patricia Donahoe
Mullerian Inhibiting Substance In The Diagnosis And Management Of Intersex And Gonadal Abnormalities, Michael Gustafson, Mary Lee, Lara Asmundson, David Maclaughlin, Patricia Donahoe
Mary M. Lee
Mullerian inhibiting substance (MIS), a gonadal hormone important in sexual differentiation, is high (10 to 70 ng/mL) in human male serum postnatally for several years before declining during the peripubertal period, but is undetectable in female serum until the onset of puberty. The sexually dimorphic secretion of MIS suggested possibilities for its use in several clinical settings. Thirty-one patients with intersex and gonadal anomalies from 17 institutions were therefore evaluated between 1989 and 1992 with an MIS enzyme-linked immunosorbent assay (ELISA). Serum MIS levels correlated with the presence of testicular tissue in two patients with suspected anorchia, five patients with …
The Role Of Mullerian Inhibiting Substance In The Evaluation Of Phenotypic Female Patients With Mild Degrees Of Virilization, Madhusmita Misra, David Maclaughlin, Patricia Donahoe, Mary Lee
The Role Of Mullerian Inhibiting Substance In The Evaluation Of Phenotypic Female Patients With Mild Degrees Of Virilization, Madhusmita Misra, David Maclaughlin, Patricia Donahoe, Mary Lee
Mary M. Lee
Mullerian inhibiting substance (MIS) is a sexually dimorphic gonadal hormone with proven efficacy in the evaluation of boys with cryptorchidism and children with intersex conditions. We examined the role of MIS determination in the evaluation of 65 phenotypic females with mild virilization. Among the 28 subjects with MIS values elevated above the normal female range, all had abnormal gonadal tissue: ovotestes in 11, testes in 7, dysgenetic gonads in 7, and MIS-secreting ovarian tumors in 3. Among the 37 children with serum MIS in the normal female range, 19 had detectable MIS and 18 had unmeasurable MIS. In the former …
Mullerian Inhibiting Substance As A Marker For Ovarian Sex-Cord Tumor, Michael Gustafson, Mary Lee, Robert Scully, Ashby Moncure, Toshio Hirakawa, Annekathryn Goodman, Howard Muntz, Patricia Donahoe, David Maclaughlin, Arlan Fuller
Mullerian Inhibiting Substance As A Marker For Ovarian Sex-Cord Tumor, Michael Gustafson, Mary Lee, Robert Scully, Ashby Moncure, Toshio Hirakawa, Annekathryn Goodman, Howard Muntz, Patricia Donahoe, David Maclaughlin, Arlan Fuller
Mary M. Lee
No abstract provided.
Mullerian Inhibiting Substance Is Present In Embryonic Testes Of Dogs With Persistent Mullerian Duct Syndrome, Vicki Meyers-Wallen, Mary Lee, T. Manganaro, T. Kuroda, David Maclaughlin, Patricia Donahoe
Mullerian Inhibiting Substance Is Present In Embryonic Testes Of Dogs With Persistent Mullerian Duct Syndrome, Vicki Meyers-Wallen, Mary Lee, T. Manganaro, T. Kuroda, David Maclaughlin, Patricia Donahoe
Mary M. Lee
Mullerian Inhibiting Substance (MIS) causes regression of the Mullerian ducts during a critical period in embryonic development in male mammals. In Persistent Mullerian Duct Syndrome (PMDS), an autosomal recessive trait in humans and dogs, the Mullerian ducts fail to regress in otherwise normal males. Previously we reported that PMDS-affected dogs produce bioactive testicular MIS postnatally. The purpose of the present study was to determine whether PMDS-affected canine embryos appropriately express MIS mRNA and protein during the critical period for Mullerian duct regression. Homozygous (PMDS-affected) and normal canine embryos were removed from timed pregnancies. Gonadal sex and the degree of Mullerian …
Mullerian Inhibiting Substance Ontogeny And Its Modulation By Follicle-Stimulating Hormone In The Rat Testes, Tatsuo Kuroda, Mary Lee, Christopher Haqq, David Powell, Thomas Manganaro, Patricia Donahoe
Mullerian Inhibiting Substance Ontogeny And Its Modulation By Follicle-Stimulating Hormone In The Rat Testes, Tatsuo Kuroda, Mary Lee, Christopher Haqq, David Powell, Thomas Manganaro, Patricia Donahoe
Mary M. Lee
Mullerian Inhibiting Substance (MIS) production in rat testes from the late fetal to the adult period and its modulation by gonadotropins in neonatal testes were studied using immunohistochemistry, northern analysis, and a graded organ culture bioassay for MIS. The intense immunohistochemical staining for MIS seen in fetal and newborn testes began to decrease gradually after the third postnatal day, then decreased dramatically on the fifth postnatal day. MIS immunohistochemical activity was then present at a low level until about the 20th postnatal day, after which it was barely detectable. The testes from rats treated with FSH at birth showed a …
Mullerian Inhibiting Substance Inhibits Testosterone Synthesis In Adult Rats, V. Sriraman, E. Niu, J. Matias, Patricia Donahoe, David Maclaughlin, Matthew Hardy, Mary Lee
Mullerian Inhibiting Substance Inhibits Testosterone Synthesis In Adult Rats, V. Sriraman, E. Niu, J. Matias, Patricia Donahoe, David Maclaughlin, Matthew Hardy, Mary Lee
Mary M. Lee
Mullerian inhibiting substance (MIS) is a gonadal hormone that causes regression of the Mullerian ducts during male sexual differentiation. Postnatally, MIS inhibits the proliferation and differentiation of immature Leydig cells, and transgenic mice that overexpress MIS have decreased serum testosterone concentrations. To elucidate the effects of MIS on androgen regulation in the postnatal testis, we examined testosterone synthesis in adult Sprague-Dawley rats following intratesticular and intraperitoneal injections of MIS. Intratesticular MIS injection achieved high local concentrations of MIS (574.0 +/- 60.0 ng/mL) at 4 hours, with a corresponding decline in serum testosterone concentrations to 0.7 +/- 0.1 ng/mL, compared to …
Developmental Changes In Mullerian Inhibiting Substance In The Cynomolgus Monkey, Macaca Fascicularis, Mary Lee, M. Gustafson, Etsuji Ukiyama, Patricia Donahoe, David Maclaughlin, Michael Wexler, Hugh Keeping
Developmental Changes In Mullerian Inhibiting Substance In The Cynomolgus Monkey, Macaca Fascicularis, Mary Lee, M. Gustafson, Etsuji Ukiyama, Patricia Donahoe, David Maclaughlin, Michael Wexler, Hugh Keeping
Mary M. Lee
Mullerian inhibiting substance (MIS) is a glycoprotein hormone produced in Sertoli cells of the fetal and postnatal testis, and granulosa cells of the pubertal ovary. We examined MIS expression in a nonhuman primate, the cynomolgus macaque monkey (Macaca fascicularis), to define an animal model for studying MIS gene regulation. Changes in testicular MIS mRNA with age were assessed by in situ hybridization of prepubertal to adult testes, Northern analysis of pubertal and adult specimens, and determination of serum MIS concentrations from infancy to adulthood. We found that MIS expression was highest in the youngest animals and decreased progressively with increasing …
Mullerian-Inhibiting Substance Type Ii Receptor Expression And Function In Purified Rat Leydig Cells, Mary Lee, C. Seah, P. Masiakos, Chantal Sottas, F. Preffer, Patricia Donahoe, David Maclaughlin, Matthew Hardy
Mullerian-Inhibiting Substance Type Ii Receptor Expression And Function In Purified Rat Leydig Cells, Mary Lee, C. Seah, P. Masiakos, Chantal Sottas, F. Preffer, Patricia Donahoe, David Maclaughlin, Matthew Hardy
Mary M. Lee
Mullerian-inhibiting substance (MIS), a gonadal hormone in the transforming growth factor-beta superfamily, induces Mullerian duct involution during male sexual differentiation. Mice with null mutations of the MIS ligand or receptor develop Leydig cell hyperplasia and neoplasia in addition to retained Mullerian ducts, whereas MIS-overexpressing transgenic mice have decreased testosterone concentrations and Leydig cell numbers. We hypothesized that MIS directly modulates Leydig cell proliferation and differentiated function in the maturing testis. Therefore, highly purified rat Leydig and Sertoli cells were isolated to examine cell-specific expression, binding, and function of the MIS type II receptor. These studies revealed that this receptor is …
Isolation Of The Rat Gene For Mullerian Inhibiting Substance, Christopher Haqq, Mary Lee, Richard Tizard, Mark Wysk, Janice Demarinis, Patricia Donahoe, Richard Cate
Isolation Of The Rat Gene For Mullerian Inhibiting Substance, Christopher Haqq, Mary Lee, Richard Tizard, Mark Wysk, Janice Demarinis, Patricia Donahoe, Richard Cate
Mary M. Lee
Mullerian inhibiting substance (MIS), a testicular glycoprotein also known as anti-Mullerian hormone, plays a key role in male sexual development by causing regression of the Mullerian duct, the anlagen of the uterus, the Fallopian tubes, and part of the vagina. MIS is also expressed in the postnatal ovary, but its precise function is still not known. We report here the complete nucleotide sequence of the rat MIS gene. Rat MIS is encoded in five exons and is synthesized as a precursor of 553 amino acids, containing a 24-amino-acid leader. Based on homology with human MIS, we predict that the rat …
Diagnostic Utility Of Mullerian Inhibiting Substance Determination In Patients With Primary And Recurrent Granulosa Cell Tumors, Andrew Lane, Mary Lee, Arlan Fuller, David Kehas, Patricia Donahoe, David Maclaughlin
Diagnostic Utility Of Mullerian Inhibiting Substance Determination In Patients With Primary And Recurrent Granulosa Cell Tumors, Andrew Lane, Mary Lee, Arlan Fuller, David Kehas, Patricia Donahoe, David Maclaughlin
Mary M. Lee
OBJECTIVES: In this study we evaluated changes in serum Mullerian inhibiting substance (MIS) concentration in a large number of patients with granulosa cell tumors (GCT) to determine whether MIS is elevated at the time of presentation and whether MIS is an index of successful surgical resection and management of recurrences. METHODS: We retrospectively reviewed MIS levels from 17 subjects prior to tumor resection and studied serial MIS samples from 56 subjects following initial tumor resection. Clinical follow-up information was available for 36 of those with postoperative MIS values. Serum MIS was measured by an ELISA. MIS values were compared to …
Mullerian Inhibiting Substance Messenger Ribonucleic Acid Expression In Granulosa And Sertoli Cells Coincides With Their Mitotic Activity, Seiichi Hirobe, Wei He, Mary Lee, Patricia Donahoe
Mullerian Inhibiting Substance Messenger Ribonucleic Acid Expression In Granulosa And Sertoli Cells Coincides With Their Mitotic Activity, Seiichi Hirobe, Wei He, Mary Lee, Patricia Donahoe
Mary M. Lee
In males, Mullerian inhibiting substance (MIS) mRNA was first detected on the medial aspect of the urogenital ridge early on the morning of day 13 of gestation before testicular differentiation was evident, and localized to the more obvious Sertoli cells later on embryonic day 13. MIS transcripts remained at maximal levels between 14.5 and 17.5 days gestation, while the Mullerian duct involutes, and remained high until birth. MIS gene expression decreased progressively after birth and, as germ cell meiosis increased, became barely detectable in the Sertoli cells of the seminiferous tubules. In female rats, MIS mRNA was first detected in …