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Coleman J, Kavanagh K, Kesterton I, Hegarty AM, O'Connell SM, Lynch SA. A novel report of a fertile female with partial Y chromosome gain completing a healthy pregnancy. Am J Med Genet A 2023; 191:2884-2889. [PMID: 37638701 DOI: 10.1002/ajmg.a.63374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/26/2023] [Accepted: 08/04/2023] [Indexed: 08/29/2023]
Abstract
We present a female patient with a complex sex chromosomal rearrangement [GRCh38] Xp22.33(10701_981101)x1,Yq11.221q11.23(13948013_26483746)x1 who conceived spontaneously and carried a healthy pregnancy to term. The patient presented with extreme short stature (more than 4SD below expected) and a bilateral Madelung deformity suggesting a possible SHOX deletion. The patient was otherwise medically well. This patient's short stature was found to be a result of a complex chromosome rearrangement involving a partial X chromosome deletion, which included the SHOX gene and a gain of Y chromosomal material. The Y chromosome material did not contain the SRY gene locus. This is the first recorded case to date of this rearrangement in a female who spontaneously conceived which resulted in a live birth. This patient had normal external and internal anatomy and normal endocrine evaluation with normal puberty. X-inactivation studies revealed no evidence of skewed inactivation.
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Affiliation(s)
- John Coleman
- Department of Clinical Genetics, Children's Health Ireland at Crumlin, Crumlin, Ireland
| | - Karl Kavanagh
- Department of Clinical Genetics, Children's Health Ireland at Crumlin, Crumlin, Ireland
| | - Ian Kesterton
- Department of Cytogenetics, Viapath, Guy's Hospital, London, UK
| | - Ann-Marie Hegarty
- Department of Cytogenetics, Children's Health Ireland at Crumlin, Crumlin, Ireland
| | - Susan M O'Connell
- Department of Endocrinology, Children's Health Ireland at Crumlin, Crumlin, Ireland
- Department of Paediatrics, Royal College of Surgeons Ireland, Dublin, Ireland
| | - Sally Ann Lynch
- Department of Clinical Genetics, Children's Health Ireland at Crumlin, Crumlin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
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Schmiedecke SS, Thagard AS, Edwards SM, Talley RL, Dornisch EM, Damicis JR, McLane M, Burd I, Napolitano PG, Ieronimakis N. Estrogen receptor 1 appears essential for fetal viability in a murine model of premature birth. Am J Reprod Immunol 2023; 89:e13662. [PMID: 36458539 DOI: 10.1111/aji.13662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/21/2022] [Accepted: 11/17/2022] [Indexed: 12/05/2022] Open
Abstract
PROBLEM Protective effects for adult neurological disorders have been attributed to sex hormones. Using a murine model of prematurity, we evaluated the role of estrogen signaling in the process of perinatal brain injury following exposure to intrauterine inflammation. METHOD OF STUDY Intrauterine lipopolysaccharide (LPS) was used to invoke preterm labor and fetal neuroinflammation. Fetal brains were analyzed for changes in Esr1, Esr2 and Cyp19. Dams heterozygous for the Esr1 knockout allele were also given intrauterine LPS to compare delivery and offspring viability to wild type controls. RESULTS The upregulation in inflammatory cytokines was accompanied by an increase in Esr1 and Esr2 transcripts, though protein levels declined. Cyp19 did not differ by mRNA or protein abundance. Offspring from Esr1 mutants were larger, had a longer gestation and significantly greater mortality. CONCLUSIONS Estrogen signaling is altered in the fetal brains of preterm offspring exposed to neuroinflammatory injury. The reduction of Esr1 and Esr2 proteins with LPS suggests that these proteins are degraded. It is possible that transcriptional upregulation of Esr1 and Esr2 occurs to compensate for the loss of these proteins. Alternatively, the translation of Esr1 and Esr2 mRNAs may be disrupted with LPS while a feedback mechanism upregulates transcription. Intact Esr1 signaling is also associated with early preterm delivery following exposure to intrauterine LPS. A loss of one Esr1 allele delays this process, but appears to do so at the cost of fetal viability. These results suggest estrogen signaling plays opposing roles between maternal and fetal responses to preterm birth.
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Affiliation(s)
- Stacey S Schmiedecke
- Division of Maternal Fetal Medicine, Madigan Army Medical Center, Tacoma, Washington, USA
| | - Andrew S Thagard
- Division of Maternal Fetal Medicine, Madigan Army Medical Center, Tacoma, Washington, USA
| | - Sarah M Edwards
- Division of Maternal Fetal Medicine, Madigan Army Medical Center, Tacoma, Washington, USA
| | - Rebecca L Talley
- Department of Clinical Investigation, Madigan Army Medical Center, Tacoma, Washington, USA
| | - Elisabeth M Dornisch
- Department of Clinical Investigation, Madigan Army Medical Center, Tacoma, Washington, USA
| | - Jennifer R Damicis
- Department of Clinical Investigation, Madigan Army Medical Center, Tacoma, Washington, USA
| | - Michael McLane
- Integrated Research Center for Fetal Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Irina Burd
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Peter G Napolitano
- Department of Obstetrics & Gynecology, University of Washington Medical Center, Seattle, Washington, USA
| | - Nicholas Ieronimakis
- Division of Maternal Fetal Medicine, Madigan Army Medical Center, Tacoma, Washington, USA.,Department of Clinical Investigation, Madigan Army Medical Center, Tacoma, Washington, USA
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Wang D, Pan Z, Wang G, Ye B, Wang Q, Zuo Z, Zou J, Xie S. Gonadal Transcriptome Analysis and Sequence Characterization of Sex-Related Genes in Cranoglanis bouderius. Int J Mol Sci 2022; 23:ijms232415840. [PMID: 36555482 PMCID: PMC9779447 DOI: 10.3390/ijms232415840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/21/2022] [Accepted: 10/27/2022] [Indexed: 12/15/2022] Open
Abstract
In China, the Cranoglanis bouderius is classified as a national class II-protected animal. The development of C. bouderius populations has been affected by a variety of factors over the past few decades, with severe declines occurring. Considering the likelihood of continued population declines of the C. bouderius in the future, it is critical to investigate the currently unknown characteristics of gonadal differentiation and sex-related genes for C. bouderius conservation. In this study, the Illumina sequencing platform was used to sequence the gonadal transcriptome of the C. bouderius to identify the pathways and genes related to gonadal development and analyze the expression differences in the gonads. A total of 12,002 DEGs were identified, with 7220 being significantly expressed in the ovary and 4782 being significantly expressed in the testis. According to the functional enrichment results, the cell cycle, RNA transport, apoptosis, Wnt signaling pathway, p53 signaling pathway, and prolactin signaling pathway play important roles in sex development in the C. bouderius. Furthermore, the sequence characterization and evolutionary analysis revealed that AMH, DAX1, NANOS1, and AR of the C. bouderius are highly conserved. Specifically, the qRT-PCR results from various tissues showed significant differences in AMH, DAX1, NANOS1, and AR expression levels in the gonads of both sexes of C. bouderius. These analyses indicated that AMH, DAX1, NANOS1, and AR may play important roles in the differentiation and development of C. bouderius gonads. To our best knowledge, this study is the first to analyze the C. bouderius gonadal transcriptome and identify the structures of sex-related genes, laying the foundation for future research.
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Affiliation(s)
- Dongjie Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Zhengkun Pan
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Guoxia Wang
- Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, Guangzhou 510640, China
- Key Laboratory of Animal Breeding and Nutrition, Guangdong Public Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Bin Ye
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Qiujie Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Zhiheng Zuo
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Jixing Zou
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
- Correspondence: (J.Z.); (S.X.); Tel.: +86-020-87571321 (J.Z.); +86-020-87571321 (S.X.)
| | - Shaolin Xie
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
- Correspondence: (J.Z.); (S.X.); Tel.: +86-020-87571321 (J.Z.); +86-020-87571321 (S.X.)
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Crewther B, Cook C, Fitzgerald J, Starczewski M, Gorski M, Orysiak J. Vitamin D and Cortisol as Moderators of the Relationship Between Testosterone and Exercise Performance in Adolescent Male Athletes. Pediatr Exerc Sci 2020; 32:204-9. [PMID: 32726751 DOI: 10.1123/pes.2019-0229] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 03/16/2020] [Accepted: 05/21/2020] [Indexed: 11/18/2022]
Abstract
PURPOSE Reported associations between vitamin 25(OH)D and exercise performance are equivocal, perhaps due to complex interplay with cortisol and testosterone. In this study, the authors investigated serum 25(OH)D and cortisol as moderators of the testosterone relationship with exercise performance in adolescent male athletes. METHODS A total of 88 ice hockey players were assessed for serum 25(OH)D, cortisol, testosterone, body composition, and exercise performance, based on countermovement jump power and muscle torque. The authors tested independent relationships, before examining complex interactions via moderated regression analyses. RESULTS Most athletes (62.5%) exhibited a suboptimal (20-30 ng·mL-1) serum 25(OH)D concentration, whereas 9.1% of athletes were deficient (<20 ng·mL-1). Serum 25(OH)D was not related to performance when controlling for testing year, age, and fat mass. Further modeling revealed a significant hormonal interaction. Specifically, in low-25(OH)D subjects, testosterone predicted countermovement jump power at a high (β = 7.10, effect size = .43, P < .01), but not low (β = -3.32, effect size = -.20, P = .09), cortisol concentration. CONCLUSIONS Serum 25(OH)D was a poor predictor of exercise performance, but it did moderate (with cortisol) the testosterone link to muscle power. Notably, this relationship emerged among individuals with a 25(OH)D concentration (∼22 ng·mL-1) approaching the deficiency cutoff. Viewing 25(OH)D as a moderating, rather than dose responsive, variable could help explain equivocal cross-sectional associations.
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Pan Q, Xue T, Xia B, Luo J, Wang Q, Jiang Y, Yu M, Chen T. Gonadal, Not Maternal, Acquisition of Duplicated pax6 Orthologs in Megalobrama Amblycephala. Int J Mol Sci 2019; 20:E1710. [PMID: 30959850 DOI: 10.3390/ijms20071710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/03/2019] [Accepted: 04/03/2019] [Indexed: 01/12/2023] Open
Abstract
: The highly conserved transcription factor Pax6 is involved in the development of the eyes, brain, and pancreas in vertebrates and invertebrates, whereas the additional expression pattern in other organs is still elusive. In this study, we cloned and characterized two pax6 homologs in blunt snout bream (Megalobrama amblycephala), named Mapax6a and Mapax6b. The protein alignment and phylogenetic tree showed that Mapax6a and Mapax6b were highly conserved compared with their counterparts in other species. Genomic information analysis revealed that the synteny conservation of Wilms tumor, Aniridia, genitourinary abnormalities, and mental retardation loci was also maintained in this species. By reverse transcription polymerase chain reaction, the expression of Mapax6a was later than that of Mapax6b which was found in the blastula stage, while the expression of Mapax6a started from the somite stage, and both of them persisted in a subsequent stage during the embryonic development. By RNA and protein detection, Mapax6a and Mapax6b were detected in the eye and brain as canonic patterns, and most importantly, they were also enriched in germ cells of the testis and ovary. Therefore, our findings validate the duplication of pax6 in fish, confirm the classical expression patterns in the brain and eye, and, for the first time, present a new acquisition of Mapax6a and Mapax6b in gonadal germ cells in particular. Therefore, our results enrich the expression pattern and evolutionary relationship of pax6 by suggesting that duplicated Mapax6 is involved in gametogenesis in Megalobrama amblycephala.
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Nallikuzhy TJ, Rajasekhar SSSN, Malik S, Tamgire DW, Johnson P, Aravindhan K. Variations of the testicular artery and vein: A meta-analysis with proposed classification. Clin Anat 2018; 31:854-869. [PMID: 29737575 DOI: 10.1002/ca.23204] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 03/22/2018] [Accepted: 04/30/2018] [Indexed: 11/09/2022]
Abstract
Variations of testicular vessels are more common than supposed. The testicular artery varies because of abnormal regression of the lateral mesonephric arteries in the fetus, whereas variations in the testicular vein are due to abnormalities in the involution of the intersubcardinal anastomosis. Such variations are usually found incidentally during surgical procedures around the renal pedicle and they often lead to complications. Several authors have attempted to classify them. However, these attempts have not been comprehensive. Therefore, the aim of this study is to provide a simple yet comprehensive classification of variations of the testicular vessels. The PubMed database was searched using keywords pertaining to the testicular vessels. The results were subjected to the Anatomical Quality Assessment (AQUA) tool analysis and were screened for appropriateness for inclusion in this study. The screening procedure yielded 31 original articles, 83 case reports, and 1 review article. Both testicular arterial and venous variations were more common on the left side (20.73% and 24.61%) than the right (12.69% and 18.4%, respectively). We classified the testicular arteries on the basis of their number (N), site of origin (O), and course (C). Similarly, the testicular veins were classified on the basis of their number (N) and site of drainage (D). The proposed classification facilitates identification, understanding, and reporting of variations of the testicular vessels by radiologists. It will also help surgeons to enhance the quality of their treatment. Clin. Anat. 31:854-869, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Tom J Nallikuzhy
- Department of Anatomy, Jawaharlal Institute of Postgraduate Medical Education & Research (JIPMER), Dhanvantri Nagar, Gorimedu, Puducherry, 605006, India
| | - S S S N Rajasekhar
- Department of Anatomy, Jawaharlal Institute of Postgraduate Medical Education & Research (JIPMER), Dhanvantri Nagar, Gorimedu, Puducherry, 605006, India
| | - Sabin Malik
- Department of Anatomy, Jawaharlal Institute of Postgraduate Medical Education & Research (JIPMER), Dhanvantri Nagar, Gorimedu, Puducherry, 605006, India
| | - Dharmaraj W Tamgire
- Department of Anatomy, Jawaharlal Institute of Postgraduate Medical Education & Research (JIPMER), Dhanvantri Nagar, Gorimedu, Puducherry, 605006, India
| | - Phoebe Johnson
- Department of Anatomy, Jawaharlal Institute of Postgraduate Medical Education & Research (JIPMER), Dhanvantri Nagar, Gorimedu, Puducherry, 605006, India
| | - K Aravindhan
- Department of Anatomy, Jawaharlal Institute of Postgraduate Medical Education & Research (JIPMER), Dhanvantri Nagar, Gorimedu, Puducherry, 605006, India
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Magalhães M, Marques C, Ramos F, Jardim A, Franco S, Coelho F, Carreira I, Moura P. Why could a woman have three Trisomy 21 pregnancies? - a case report. Clin Case Rep 2017; 5:1222-1225. [PMID: 28781828 PMCID: PMC5538204 DOI: 10.1002/ccr3.997] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 04/03/2017] [Accepted: 04/09/2017] [Indexed: 01/27/2023] Open
Abstract
Mosaicism, an important cause for recurrent T21, should be suspected in families with more than one affected child wishing to receive prenatal counseling. Fluorescence in-situ hybridization analysis in a large number of cells and in different tissue samples is critical for detecting low-level mosaicism and is a key prognostic factor.
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Affiliation(s)
- Magda Magalhães
- Department of Obstetrics and Gynecology A Serviço de Ginecologia e Obstetrícia Centro Hospitalar e Universitário de Coimbra Coimbra Portugal
| | - Cecília Marques
- Department of Obstetrics and Gynecology A Serviço de Ginecologia e Obstetrícia Centro Hospitalar e Universitário de Coimbra Coimbra Portugal
| | - Fabiana Ramos
- Department of Medical Genetics Hospital Pediátrico Centro Hospitalar e Universitário de Coimbra Coimbra Portugal
| | - Ana Jardim
- European Clinical Laboratory Geneticist Faculdade de Medicina da Universidade de Coimbra Coimbra Portugal
| | - Sofia Franco
- Department of Obstetrics and Gynecology A Serviço de Ginecologia e Obstetrícia Centro Hospitalar e Universitário de Coimbra Coimbra Portugal
| | - Filomena Coelho
- Department of Obstetrics and Gynecology A Serviço de Ginecologia e Obstetrícia Centro Hospitalar e Universitário de Coimbra Coimbra Portugal
| | - Isabel Carreira
- European Clinical Laboratory Geneticist Faculdade de Medicina da Universidade de Coimbra Coimbra Portugal.,CIMAGO Faculdade de Medicina da Universidade de Coimbra Coimbra Portugal.,Cytogenetics and Genomics Laboratory Faculdade de Medicina da Universidade de Coimbra Coimbra Portugal
| | - Paulo Moura
- Department of Obstetrics and Gynecology A Centro Hospitalar e Universitário de Coimbra Coimbra Portugal.,Faculdade de Medicina da Universidade de Coimbra Coimbra Portugal
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Abstract
BACKGROUND The true incidence of gonadal germ cell tumors (GCTs) in children is unknown. Few studies have been published concerning about pediatric gonadal GCTs. The aim of this study is to review and analyze clinical data on the diagnosis and management of gonadal GCTs in children. METHODS Between 2005 and 2015, 127 pediatric patients (<14 years old) with gonadal GCTs admitted to our institute were reviewed. Clinical features, imaging and laboratory studies, surgical approaches, as well as pathological diagnoses were recorded. RESULTS The series comprised 53 males with testicular GCTs and 74 females with ovarian GCTs. Their median age was 5.8 years old. Palpable mass was the main clinical manifestation of testicular GCTs, while abdominal pain and abdominal distention were the most frequent presenting symptoms of ovarian GCTs. Both computed tomography and magnetic resonance imaging showed a high diagnostic yield. AFP levels were elevated in most malignant GCTs, markedly elevated in yolk sac tumors. All patients were treated surgically. Mature teratoma was the most common type of benign GCTs, while yolk sac tumor was the most common type of malignant GCTs. CONCLUSION Gonadal GCTs in children have various of pathological types, as well as clinical manifestations. Imaging and laboratory data could be useful for differentiation of malignant from benign tumors. Final diagnosis depends on pathology. Surgical excision of the gonadal GCTs is the prior option.
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Affiliation(s)
- Xiaokun Lin
- Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University
| | - Dazhou Wu
- Department of Pediatric Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Na Zheng
- Department of Pediatric Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Qiongzhang Xia
- Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University
| | - Yijiang Han
- Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University
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Babiker A, Al Shaikh A. The role of kisspeptin signalling in control of reproduction in genetically similar species. Sudan J Paediatr 2016; 16:9-16. [PMID: 27651548 PMCID: PMC5025939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Kisspeptin (previously known as metastin) is a protein encoded by the KISS-1 gene in humans. Kisspeptin producing neurons seem to bridge the gap between the sex steroid levels and feedback mechanisms that control the gonadotropin releasing hormone secretion. Since 2003, there are many studies on the facets of neuroendocrine networks that control puberty and fertility. These have explored the role of Kisspeptins in puberty and fertility using animal models. Kisspeptins are universally recognized as essential activators of the gonadotropic axis and they play an essential role in the metabolic regulation of fertility. Moreover, novel aspects of Kisspeptins/G-protein coupled receptor 54 or Kisspeptin receptor (KPs/GPR54) physiology have demonstrated the Kisspeptins involvement in the neuroendocrine control of ovulation. In this article, the authors highlight the outcome of the most recent work on Kisspeptin role in reproduction in human and animal models and give an opinion on future perspectives.
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Affiliation(s)
- Amir Babiker
- King Saud University Medical City and King Saud University, Riyadh, Saudi Arabia
| | - Adnan Al Shaikh
- King Saud bin Abdulaziz University for Health Sciences, Pediatrics Department, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Jeddah, Saudi Arabia
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Abstract
Pediatric germ cell tumors (GCT) are rare tumors: 80% are benign, 20% malignant (2-3% of all malignant pediatric tumors). The gonadal sites (ovary and testis) account for 40% of cases. Ovarian GCTs: Represent 30% of GCTs and 70% of neoplastic ovarian masses, being the most common ovarian neoplasms in children and teenagers. Benign and immature forms (teratomas) constitute about 80% of all ovarian GCTs, malignant forms represent 20% increasing during adolescence. The most common malignant entity in children is the yolk sac tumors (YST); dysgerminoma is frequent during adolescence and being bilateral in 10% of cases. Presentation is similar in malignant and benign lesions; abdominal pain (70-80%) and lower abdominal mass are common symptoms. Evaluation of alpha-fetoprotein (αFP) or beta subunit of human chorionic gonadotropin (βHCG) is essential to address the nature of the tumors: Their elevation means presence of malignancy. Surgery includes intraoperative staging procedures and requires ovariectomy or ovarosalpingectomy for malignant lesions, but may be conservative in selected benign tumors. Since malignant GCTs are very chemosensitive, primary chemotherapy is recommended in metastatic or locally advanced tumors. Testicular GCT: Represent 10% of pediatric GCT, and about 30% of malignant GCT with two age peaks: Children <3 years may experience mature teratoma and malignant GCTs, represented almost exclusively by YST, while adolescents may also show seminomas or other mixed tumors. The main clinical feature is a painless scrotal mass. Surgery represents the cornerstone of the management of testicular GCTs, with an inguinal approach and a primary high orchidectomy for malignant tumors, while a testis-sparing surgery can be considered for benign lesions. A retroperitoneal lymph node (LN) biopsy may be necessary to define the staging when the involvement of retroperitoneal LN is uncertain at imaging investigations. Conclusion: Patients with gonadal malignant GCTs fare better than those with extragonadal mediastinal germ cell tumors (MGCTs) and survival rate exceeds 90% in localized forms. Chemotherapy has significantly improved the outcome of malignant forms since the introduction of platinum based regimens. The surgical procedure has to be performed in agreement with the ongoing protocols.
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Affiliation(s)
- Giovanni Cecchetto
- Department of Women's and Children's Health, Pediatric Surgery Unit, University Hospital of Padua, Padua, Italy
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11
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Abstract
Independent of the underlying condition, critical illness is characterized by a uniform dysregulation of the hypothalamic-pituitary-peripheral axes. In most axes a clear biphasic pattern can be distinguished. The acute phase of critical illness is characterized by low peripheral effector hormone levels such as T3, IGF-1 and testosterone, despite an actively secreting pituitary. The adrenal axis with high cortisol levels in the presence of low ACTH levels is a noteworthy exception. In the prolonged phase of critical illness, low peripheral effector hormone levels coincide with a uniform suppression of the neuroendocrine axes, predominantly of hypothalamic origin. The severity of the alterations in the different neuroendocrine axes is associated with a high risk of morbidity and mortality, but it remains unknown whether the observed changes are cause or consequence of adverse outcome. Several studies have identified therapeutic potential of hypothalamic releasing factors, but clinical outcome remains to be investigated with sufficiently powered randomized controlled trials.
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Affiliation(s)
- Lies Langouche
- Laboratory and Department of Intensive Care Medicine, University of Leuven, Leuven, Belgium.
| | - Greet Van den Berghe
- Laboratory and Department of Intensive Care Medicine, University of Leuven, Leuven, Belgium
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Yang Y, Smith DL, Hu HH, Zhai G, Nagy TR. Chemical-shift water-fat MRI of white adipose depots: inability to resolve cell size differences. Int J Body Compos Res 2013; 11:9-16. [PMID: 23667321 PMCID: PMC3649013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
PURPOSE Adipocyte cell size varies among individuals and importantly, is inversely correlated with insulin sensitivity, and modifiable by weight loss or pharmaceutical agents. However, there are no non-invasive, in vivo methods for adipocyte cell size determination. Here we apply Chemical-Shift Water-Fat MRI to in vivo measures of subcutaneous (inguinal) and visceral (gonadal) white adipose tissue (WAT) to determine whether the fat-signal fraction (FF) is a sensitive indicator of adipocyte cell size. MATERIALS AND METHODS C57BL/6J male mice (8 weeks old) were singly housed and fed a low-fat diet, high-fat diet or very high-fat diet (n = 16 or 15/group) for 8 weeks. Food intake, body weight and composition were measured; CS-MRI was performed on a 9.4 Tesla Bruker magnet with respiratory gating and anesthesia. Histology was acquired for gonadal WAT; both gonadal and inguinal WAT were fixed with osmium tetroxide and then measured through Image J for cell size. RESULTS Mice fed with higher fat content diets gained significantly more body weight, fat and lean mass while maintaining higher energy intakes over the 8 weeks. There was no significant difference in fat fraction for either gonadal (P = 0.1295) or inguinal (P = 0.4704) WAT among the three groups, despite significantly larger adipocytes (P <0.0001) in mice on high fat diets. CONCLUSION Although diet-induced obesity significantly increased the amount of fat mass, as well as mean and overall white adipocyte cell size, the CS-MRI measured fat fraction between groups were not significantly different. These results do not support the utility of CS-MRI measured FF for in vivo determination of adipocyte cell size.
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Affiliation(s)
- Yongbin Yang
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Daniel L. Smith
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
- Nutrition Obesity Research Center, University of Alabama at Birmingham, Birmingham, AL, USA
- Diabetes Research Training Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Houchun H. Hu
- Department of Radiology, Children’s Hospital Los Angeles, University of Southern California, Los Angeles, CA, USA
| | - Guihua Zhai
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Tim R. Nagy
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
- Nutrition Obesity Research Center, University of Alabama at Birmingham, Birmingham, AL, USA
- Diabetes Research Training Center, University of Alabama at Birmingham, Birmingham, AL, USA
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Brown GR, Spencer KA. Steroid hormones, stress and the adolescent brain: a comparative perspective. Neuroscience 2012; 249:115-28. [PMID: 23262238 DOI: 10.1016/j.neuroscience.2012.12.016] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 11/30/2012] [Accepted: 12/01/2012] [Indexed: 02/07/2023]
Abstract
Steroid hormones, including those produced by the gonads and the adrenal glands, are known to influence brain development during sensitive periods of life. Until recently, most brain organisation was assumed to take place during early stages of development, with relatively little neurogenesis or brain re-organisation during later stages. However, an increasing body of research has shown that the developing brain is also sensitive to steroid hormone exposure during adolescence (broadly defined as the period from nutritional independence to sexual maturity). In this review, we examine how steroid hormones that are produced by the gonads and adrenal glands vary across the lifespan in a range of mammalian and bird species, and we summarise the evidence that steroid hormone exposure influences behavioural and brain development during early stages of life and during adolescence in these two taxonomic groups. Taking a cross-species, comparative perspective reveals that the effects of early exposure to steroid hormones depend upon the stage of development at birth or hatching, as measured along the altricial-precocial dimension. We then review the evidence that exposure to stress during adolescence impacts upon the developing neuroendocrine systems, the brain and behaviour. Current research suggests that the effects of adolescent stress vary depending upon the sex of the individual and type of stressor, and the effects of stress could involve several neural systems, including the serotonergic and dopaminergic systems. Experience of stressors during adolescence could also influence brain development via the close interactions between the stress hormone and gonadal hormone axes. While sensitivity of the brain to steroid hormones during early life and adolescence potentially leaves the developing organism vulnerable to external adversities, developmental plasticity also provides an opportunity for the developing organism to respond to current circumstances and for behavioural responses to influence the future life history of the individual.
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Affiliation(s)
- G R Brown
- School of Psychology and Neuroscience, University of St Andrews, UK.
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Veldhuis JD, Liu PY, Keenan DM, Takahashi PY. Older men exhibit reduced efficacy of and heightened potency downregulation by intravenous pulses of recombinant human LH: a study in 92 healthy men. Am J Physiol Endocrinol Metab 2012; 302:E117-22. [PMID: 21971523 PMCID: PMC3328086 DOI: 10.1152/ajpendo.00450.2011] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Direct sampling of the human spermatic veins has disclosed concomitant LH and testosterone (T) pulses, suggesting pulsatile LH concentration-dependent stimulation of T secretion. However, studies to date have examined this hypothesis using only pharmacological stimulation with hCG. The present study tests the hypothesis that age is marked by decreased T secretory responses to repeated near-physiological iv pulses of recombinant human LH administered in a Clinical Translational Science Center. Participants included 92 healthy men aged 18-75 yr with BMI 18-34 kg/m(2). The contribution of endogenous LH pulses was minimized by combined injection of a selective GnRH receptor antagonist sc and successive pulses of biosynthetic LH iv. A new analytical dose response model was applied to estimate the properties of exogenous LH's drive of T secretion. Regression of LH-T dose response potency estimates on age showed that the efficacy of pulses of biosynthetic LH progressively decreased with age (P = 0.014, r = 0.26). Testis sensitivity to exogenous LH pulses also declined with age (P = 0.011, r = 0.27). Moreover, estimated Leydig cell downregulation by LH pulses rose significantly with age (P = 0.039, r = 0.22). These outcomes were selective, since the recovery potency of infused LH was not affected by age but was reduced by increasing BMI (P = 0.011, r = 0.27). Assuming stable bioactivity of infused recombinant human LH, these novel data indicate that factors associated with age and BMI attenuate LH efficacy and testis sensitivity and augment Leydig cell downregulation in healthy men.
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Affiliation(s)
- Johannes D Veldhuis
- Endocrine Research Unit, Mayo Clinic, 200 First St. SW, Rochester, MN 55905, USA.
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15
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Abstract
The orphan nuclear receptor DAX-1 (dosage-sensitive sex reversal-AHC critical region on the X chromosome gene 1; NR0B1) is known for its role in human development, specifically sex determination and steroidogenesis. Several recent publications have described an alternatively spliced form of DAX-1 called DAX-1A ( NR0B1A). DAX-1A is encoded by exons 1 and 2A of DAX-1, with exon 2A located within the DAX-1 intron 1. DAX-1A expression has been observed in several tissues, including adrenal gland, ovary, and testis. Transfection studies have further shown that DAX-1A has an inhibitory effect on DAX-1, suggesting a role for DAX-1A in the regulation of adrenal and gonadal differentiation/function. However, the relative level of DAX-1 versus DAX-1A transcripts still remains unclear. Herein, we developed and performed quantitative real-time RT-PCR to measure DAX-1 and DAX-1A mRNA expression levels in H295R human adrenal carcinoma cell lines, human adult and fetal adrenal glands, corpus luteum, testis, whole pre- and postmenopausal ovaries, ovarian follicles, placenta, liver, and kidney. These mRNA expression levels were quantified using DAX-1 and DAX-1A standard curves. In addition, Western blotting analysis was performed to examine both DAX-1 and DAX-1A protein levels in H295R cells, adrenal glands, corpus luteum, and liver. Both DAX-1 and DAX-1A mRNA were detected in all samples of H295R cells, human fetal and adult adrenals, testis, ovary, ovarian follicles, and corpus luteum. However, DAX-1 mRNA levels were significantly higher (> 37-fold) than that seen for DAX-1A (p<0.01). DAX-1A mRNA expression levels were undetectable in human liver, placenta, and kidney. Western blotting analysis results demonstrated that DAX-1 protein was predominantly expressed in H295R cells, human adult adrenal, and corpus luteum. These results suggest that in comparison to DAX-1A, DAX-1 is, by far, the predominant mRNA isoform found in human adrenal glands and gonads.
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Affiliation(s)
- Yasuhiro Nakamura
- Department of Physiology, Medical College of Georgia, Augusta, Georgia 30912
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai, Japan 980-8575
| | | | - Hironobu Sasano
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai, Japan 980-8575
| | - William E Rainey
- Department of Physiology, Medical College of Georgia, Augusta, Georgia 30912
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