scholarly journals Invasive hydatidiform mole of the lung with an implantation site intermediate trophoblast: Report of a case supporting the pathways of trophoblast differentiation

2016 ◽  
Vol 66 (7) ◽  
pp. 413-414
Author(s):  
Su Hyun Yoo ◽  
Kyu-Rae Kim ◽  
Stanley J. Robboy
Keyword(s):  
Hydatidiform Mole ◽  
Implantation Site ◽  
Trophoblast Differentiation ◽  
Intermediate Trophoblast

Downregulation of miR-29a/b/c in placenta accreta inhibits apoptosis of implantation site intermediate trophoblast cells by targeting MCL1

Placenta ◽  
2016 ◽  
Vol 48 ◽  
pp. 13-19 ◽  
Author(s):  
Yongzhong Gu ◽  
Yuehong Bian ◽  
Xiaofei Xu ◽  
Xietong Wang ◽  
Changting Zuo ◽  
...  
Keyword(s):  
Placenta Accreta ◽  
Implantation Site ◽  
Trophoblast Cells ◽  
Intermediate Trophoblast

Maternal Vascular Underperfusion: Nosology and Reproducibility of Placental Reaction Patterns

2004 ◽  
Vol 7 (3) ◽  
pp. 237-249 ◽  
Author(s):  
Raymond W. Redline ◽  
Theonia Boyd ◽  
Valarie Campbell ◽  
Scott Hyde ◽  
Cynthia Kaplan ◽  
...  
Keyword(s):  
Recurrence Risk ◽  
Giant Cells ◽  
Fetal Weight ◽  
Basal Plate ◽  
Implantation Site ◽  
Volume Depletion ◽  
Placental Site ◽  
Intermediate Trophoblast ◽  
Sensitivity Specificity ◽  
Reaction Patterns

Placental examination can be a useful tool for specifying the etiology, prognosis, and recurrence risk of pregnancy disorders. The purpose of this study was to test the reliability of a predetermined set of placental reaction patterns seen with maternal vascular underperfusion in the hope that this might provide a useful diagnostic framework for practicing pathologists. Study cases (14 with clinical and pathologic evidence of maternal underperfusion plus 6 controls) were evaluated for the presence or absence of 11 lesions by eight perinatal pathologists. After analysis of initial results, diagnostic criteria were refined and a second, overlapping set of cases was reviewed. The collective sensitivity, specificity, and efficiency of individual assessments for the 11 lesions relative to the group consensus ranged from 74–93% (22/33 > 90%). Reproducibility was measured by unweighted kappa-values and interpreted as follows: < 0.2 poor, 0.2–0.6 fair/moderate, > 0.6 substantial. Kappa values for lesions affecting villi and the intervillous space were increased syncytial knots (any —0.42, severe —0.50), villous agglutination (0.42), increased intervillous fibrin (0.25), and distal villous hypoplasia (0.57). Individual estimates of percent involvement for syncytial knots, intervillous fibrin, and distal villous hypoplasia were correlated with placental and fetal weight for gestational age. Extent of increased intervillous fibrin showed the strongest correlation with both placental weight ( R = −0.64) and fetal weight ( R = −0.45). Kappa values for lesions affecting maternal vessels and the implantation site were acute atherosis (0.50), mural hypertrophy of membrane arterioles (0.43), muscularized basal plate arteries (0.48), increased placental site giant cells (0.54), and immature intermediate trophoblast (0.36). Correlation of maternal vessel and implantation site lesions with the clinical diagnosis of preeclampsia showed that excessive placental site giant cells and immature intermediate trophoblast were more sensitive and efficient predictors, whereas atherosis and muscularized basal plate arteries were more specific. Kappa value for a thin umbilical cord, a possible indicator of fetal volume depletion, was 0.61. Reproducibility for a global impression of maternal vascular underperfusion, taking into account all of the above lesions, was moderate (kappa 0.54) and improved after inclusion of additional pathologic and clinical data (kappa 0.68). Adoption of this clearly defined, clinically relevant, and pathologically reproducible terminology could enhance clinicopathologic correlation and provide a more objective framework for future clinical research.

scholarly journals NLRP7 Plays A Functional Role in Regulating BMP4 Signaling During Differentiation of Patient-Derived Trophoblasts

2019 ◽  
Author(s):  
Aybuke Alici-Garipcan ◽  
Burcu Özçimen ◽  
Ilke Suder ◽  
Volkan Ülker ◽  
Tamer T. Önder ◽  
...  
Keyword(s):  
Cell Fate ◽  
Hydatidiform Mole ◽  
Transcriptome Profiling ◽  
Cell Types ◽  
Gestational Trophoblastic Disease ◽  
Patient Specific ◽  
Trophoblast Differentiation ◽  
Induced Pluripotent ◽  
Pathway Inhibition

Complete Hydatidiform Mole (HM) is a gestational trophoblastic disease resulting in hyper proliferation of trophoblast cells and absence of embryo development. Mutations in the primate specific-maternal effect gene NLRP7 are the major cause of familial recurrent complete HM. Here, we established an in vitro model of HM using NLRP7 deficient patient-specific induced pluripotent stem cells (iPSCs) derived trophoblasts. Using whole transcriptome profiling during trophoblast differentiation, we showed that NLRP7 deficiency results in precocious downregulation of pluripotency factors, activation of trophoblast lineage markers and promotes maturation of differentiated extraembryonic cell types such as syncytiotrophoblasts. Interestingly, we found that these phenotypes are dependent on BMP4 signaling and BMP pathway inhibition corrected the excessive trophoblast differentiation of patient derived iPSCs. Our human iPSC model of a genetic placental disease recapitulates aspects of trophoblast biology, highlights the broad utility of iPSC-derived trophoblasts for modeling human placental diseases and identifies NLRP7 as an essential modulator of key developmental cell fate regulators.

scholarly journals Cytological distribution of chorionic gonadotropin subunit and placental lactogen messenger RNA in neoplasms derived from human placenta.

1983 ◽  
Vol 97 (4) ◽  
pp. 1200-1206 ◽  
Author(s):  
M Hoshina ◽  
R Hussa ◽  
R Pattillo ◽  
I Boime
Keyword(s):  
Chorionic Gonadotropin ◽  
Human Placenta ◽  
Messenger Rna ◽  
Hydatidiform Mole ◽  
Placental Lactogen ◽  
Major Protein ◽  
Trophoblast Differentiation ◽  
Trophoblastic Diseases ◽  
Gestational Trophoblastic Diseases ◽  
Invasive Mole

Normal trophoblast of the human placenta elaborates at least two major protein hormones, chorionic gonadotropin (hCG), and placental lactogen (hPL). There are several gestational trophoblastic diseases of the placenta called hydatidiform mole, invasive mole, and choriocarcinoma. Molar and choriocarcinoma tissues characteristically synthesize large amounts of hCG and small quantities of hPL. To examine the role of trophoblast differentiation in the expression of the hCG and hPL genes, we studied the cytological distribution of their messenger RNA (mRNA) in tissue sections of human hydatidiform mole and choriocarcinoma by in situ hybridization. Histologically, these tissues are in different stages of cellular differentiation. In normal placenta, hCG alpha and -beta mRNA can be localized to some cytotrophoblasts and primarily to the syncytium, whereas hPL mRNA appears only in the syncytial layer. In hydatidiform mole, which still retains placental villous morphology, the hPL gene and hCG alpha and -beta genes are expressed but are poorly localized because of the admixture of cyto- and syncytiotrophoblasts. By contrast, choriocarcinoma, which is devoid of placental villous pattern but in which the cyto- and syncytiotrophoblast-like components are distinguishable, expresses hCG alpha and -beta in the syncytial-like areas but little, if any, hPL. These results suggest that a certain level of trophoblast differentiation, such as villous formation, is associated with hPL expression, while the hCG alpha gene and the hCG beta gene can be expressed in more disorganized tissues that contain cytotrophoblastic elements.

Methylation status and expression of E-cadherin and cadherin-11 in gestational trophoblastic diseases

2003 ◽  
Vol 13 (6) ◽  
pp. 879-888 ◽  
Author(s):  
W. C. Xue ◽  
H. C. Feng ◽  
S. W. Tsao ◽  
K. Y. K. Chan ◽  
H. Y. S. Ngan ◽  
...  
Keyword(s):  
Western Blot ◽  
Hydatidiform Mole ◽  
Methylation Status ◽  
First Trimester ◽  
Rt Pcr ◽  
Specific Pcr ◽  
Trophoblastic Diseases ◽  
Gestational Trophoblastic Diseases ◽  
Intermediate Trophoblast ◽  
E Cadherin

The clinical significance of cadherins in gestational trophoblastic diseases (GTD) is not fully understood. In this study, the expression of E-cadherin and cadherin-11 in 12 normal placentas, 32 cases of hydatidiform mole (HM) including 15 complete HMs and 17 partial HMs, and five choriocarcinomas was investigated by immunohistochemistry and correlated with follow-up of HMs. Cases with available frozen blocks were further analyzed by western blot and semiquantitative reverse transcriptase polymerase chain reaction (RT-PCR). Methylation of E-cadherin was investigated by methylation-specific PCR in six normal first trimester placentas, 19 HMs and their associated deciduas. E-cadherin expression was localized to cytotrophoblast and intermediate trophoblast whereas cadherin-11 was expressed in syncytiotrophoblast, intermediate trophoblast, and decidua. Immunoreactivity of E-cadherin was reduced in choriocarcinoma and complete HM when compared with that in normal first trimester placenta (P < 0.01, P = 0.04). Hypermethylation of E-cadherin was demonstrated in three complete HMs with the lowest level of E-cadherin. Compared with normal first trimester placenta, immunoreactivity of cadherin-11 was higher in complete HM (P = 0.02), but lower in choriocarcinoma (P = 0.02). Such differential expression was confirmed by western blot and semiquantitative RT-PCR. No obvious association was observed between the development of persistent trophoblastic disease with the expression of E-cadherin and cadherin-11.

Methotrexate Therapy in Obstetricaĺ Diseases

2016 ◽  
Vol 4 (1) ◽  
pp. 9 ◽  
Author(s):  
Aneta Tomescu ◽  
Rodica Sîrbu ◽  
Stelian Paris ◽  
Emin Cadar ◽  
Cristina Luiza Erimia ◽  
...  
Keyword(s):  
Clinical Pharmacology ◽  
Side Effects ◽  
Ectopic Pregnancy ◽  
Malignant Disease ◽  
Surgical Intervention ◽  
Hydatidiform Mole ◽  
Medical Abortion ◽  
Methotrexate Therapy ◽  
Therapeutic Effects ◽  
Neoplastic Diseases

Our study is a rewiew of Methotrexate therapy in obstetrica? diseases such us: hydatidiform mole, and medical abortion. In the medical world, methotrexate is a citostatic drug used in neoplastic diseases. The clinical pharmacology data regarding methotrexate is presented, alongside route of administration and therapeutic effects in malignant disease, hydatiform mole, and medical abortion. The use of methotrexate in medical abortion and ectopic pregnancy is a great accomplishment, as it replaces a surgical intervention marred by characteristic side effects, with similar results.

Methotrexate Therapy in Obstetricaĺ Diseases

2016 ◽  
Vol 2 (1) ◽  
pp. 9 ◽  
Author(s):  
Aneta Tomescu ◽  
Rodica Sîrbu ◽  
Stelian Paris ◽  
Emin Cadar ◽  
Cristina Luiza Erimia ◽  
...  
Keyword(s):  
Clinical Pharmacology ◽  
Side Effects ◽  
Ectopic Pregnancy ◽  
Malignant Disease ◽  
Surgical Intervention ◽  
Hydatidiform Mole ◽  
Medical Abortion ◽  
Methotrexate Therapy ◽  
Therapeutic Effects ◽  
Neoplastic Diseases

Our study is a rewiew of Methotrexate therapy in obstetrica? diseases such us: hydatidiform mole, and medical abortion. In the medical world, methotrexate is a citostatic drug used in neoplastic diseases. The clinical pharmacology data regarding methotrexate is presented, alongside route of administration and therapeutic effects in malignant disease, hydatiform mole, and medical abortion. The use of methotrexate in medical abortion and ectopic pregnancy is a great accomplishment, as it replaces a surgical intervention marred by characteristic side effects, with similar results.

Spectrum of Pathological Lesions in Uterine Specimens with Focus on Gestational Trophoblastic Disease in Karachi

2020 ◽  
Keyword(s):  
Hydatidiform Mole ◽  
Endometrial Stromal Sarcoma ◽  
Gestational Trophoblastic Disease ◽  
Cross Sectional Study ◽  
Reproductive Age ◽  
P Value ◽  
Cross Sectional ◽  
Endometrial Polyps ◽  
Trophoblastic Disease ◽  
Proliferative Endometrium

Background: The most common benign pathological lesion in women of reproductive age is uterine leiomyoma. Gestational trophoblastic disease includes tumors and tumor like lesions originating from trophoblastic tissue. The aim of this study was to find the spectrum of molar pregnancy and uterine pathologies focusing on gestational trophoblastic disease as no study has been done in the past few years. Methods: Endometrial and uterine specimens of patients (n=436) between the ages of 15-65 years were collected from a private hospital in Karachi from December 2018 to December 2019. This cross-sectional study was carried out by pathological diagnosis of patients’ samples under light microscopy using hematoxylin and eosin staining. Stratification was done about age and nature of specimen to control the effect modifiers. The post stratification Chi square test was applied and p value <0.05 was considered significant. Results: Mean age of the patients was 36.1 years ±7.8. Total 436 uterine biopsies included 260(59.6%) hysterectomies, 56(12.8%) endometrial curetting’s, 117(26.8%) evacuation specimens and 3(0.7%) polypectomies. Common pathologies included 124(28.4%) leiomyomas, 61(14%) proliferative endometrium, 52(11.9%) adenomyosis and 32(7.3%) endometrial polyps. Gestational trophoblastic disease was seen in 9(2.06%). Seven (87.5%) were partial hydatidiform moles, one (12.5%) exaggerated placental site reaction and one choriocarcinoma. Mole was common between 26-30 years with mean age of 27.2 years and prevalence was 6/100 abortions. Conclusion: Leiomyoma was the commonest (28.4%) uterine pathology followed by proliferative endometrium (14.5%). However, endometrial stromal sarcoma and endometriosis were found 0.2% each. High prevalence of mole was seen in this study. Partial mole was most common and choriocarcinoma was least common. Keywords: Hydatidiform Mole; Pathology; Prevalence.

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