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1.
M Shiotani Y Noda K Narimoto K Imai T Mori K Fujimoto K Ogawa 《Human reproduction (Oxford, England)》1991,6(10):1349-1353
To elucidate the physiological function of superoxide dismutase (SOD) in the ovary, we examined the immunohistochemical distribution of CuZn-SOD in the human ovary. We also measured the CuZn-SOD concentration in human follicular fluid by enzyme-linked immunosorbent assay (ELISA). The germinal epithelium and tunica albuginea showed no or weak immunoreactivity. No or weak staining activity was also observed in the non-antral follicle. Once the follicle began to form the antral cavity, theca interna cells began to show intensive immunostaining of SOD, as compared with no staining in the granulosa and theca externa cells. In the gestational corpus luteum, theca and granulosa lutein cells showed intensive and moderate staining activity, respectively. The concentration of CuZn-SOD was 0.222 +/- 0.186 ng/mg protein (mean +/- SD) in the preovulatory follicular fluid. In the present study, the immunohistochemical distribution of SOD was confirmed in the human ovary for the first time. Taking into consideration the fact that SOD catalyses the dismutation reaction of superoxide anion radicals, the present results suggest that theca interna cells play an important role in the protection of the developing oocyte from oxygen radicals by acting as a blood-follicular barrier during follicle maturation. 相似文献
2.
Immunoperoxidase staining for renin was performed with renal tumors, including juxtaglomerular (JG) tumor, Wilms' tumors, renal adenocarcinomas, renal oncocytomas, and cortical adenomas. Compared with the JG apparatus adjacent to the glomerulus, JG tumor cells were less darkly but diffusely stained for renin. One of five Wilms' tumors revealed more numerous renin-containing tumor cells than the adjacent renal cortex, whereas three of ten renal adenocarcinomas and two of three renal oncocytomas revealed only focally renin-positive tumor cell cytoplasms. None of six cortical adenomas were positive for renin. With available fresh tumor tissue, renin activity was studied by measuring newly formed angiotensin I by radioimmunoassay. JG tumor contained markedly elevated renin activity, whereas one Wilms' tumor and two renal adenocarcinomas contained no more than 2% of renin activity of the renal cortex, more than 50% of which was inactive renin. These findings suggest that the JG tumor elaborates enormous amounts of active renin, whereas other renal tumors produce lesser amounts of renin, more than half of which is inactive renin. 相似文献
3.
Immunohistochemical localization of metallothionein in human thyroid tumors. 总被引:6,自引:1,他引:5
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High levels of metallothionein (MT) are present in the developing mammalian liver; however, a remarkable decrease is observed during postnatal life after weaning. This developmental profile is similar to that of certain oncofetal gene products such as alpha-fetoprotein, which is used as a tumor marker. This study deals with the reexpression of MT genes in thyroid tumors. With an immunohistochemical method, the presence of MT was investigated in tissue sections of normal and neoplastic human thyroid glands. Tissue sections of 34 thyroid tumors and 10 normal human thyroid glands were studied by means of the peroxidase-antiperoxidase method. MT was localized in 31 of the thyroid gland tumors. MT was also present in two of the normal thyroid glands. These findings indicate that although high levels of MT are mainly found in the fetal liver, it may also be expressed actively in certain human thyroid neoplastic tissues, and occasionally in normal thyroid tissue. 相似文献
4.
浆液性交界性肿瘤(S-BOT)约占卵巢浆液性肿瘤的15%,而浆液性肿瘤是卵巢中最常见的肿瘤,约占卵巢上皮/间质肿瘤的46%.S-BOT与卵巢黏液性交界性肿瘤(M-BOT)一样,也是发生于包括年轻女性在内的、年龄跨度很大的肿瘤,诊断的正确与否势必影响其生育能力和生活质量. 相似文献
5.
M Ghazizadeh T Oguro Y Sasaki K Aihara T Araki G F Springer 《American journal of clinical pathology》1990,93(3):315-321
Thomsen-Friedenreich (T) antigen, the immediate precursor antigen of the human blood group MN system, has been found in many carcinomas, but it is suppressed in normal tissues and nonmalignant diseases. Using a monoclonal antibody specific for the T epitope and an indirect immunoperoxidase technique at light and electron microscopic levels, the authors studied the expression of T antigen and its potential diagnostic value in ovarian tumors. Among 30 serous and mucinous ovarian cystadenocarcinomas, 20 (67%) were positive and 10 (33%) were negative for T antigen. In carcinomas, positive rates increased in parallel with the tumor grade and were 37%, 75% and 80% for grade 1, 2, and 3 tumors, respectively. Of the nine patients with metastasis, seven (78%) had positive and two had negative reactions in their primary and metastatic tumors. T antigen staining was observed at the intraluminal cell surfaces and peripheral cell membranes. The ultrastructural localization of T antigen revealed electron-dense reaction products at the cell surface and microvillous surfaces. Of the ten benign ovarian tumors, three (30%) were weakly positive and seven (70%) were negative for T antigen. These findings indicate a positive correlation between the presence of immunoreactive T antigen and conventional unfavorable prognostic indicators in ovarian carcinoma. The surface location of T antigen suggests that it may have a functional role at the cell membrane and the membrane may be involved in secretion (shedding) of T antigen. Detection of T antigen may be a useful marker of prognosis in ovarian carcinoma. 相似文献
6.
Immunohistochemical localization of the bone morphogenetic protein receptors in the porcine ovary 总被引:3,自引:0,他引:3
The bone morphogenetic protein (BMP) family is emerging as playing a crucial role in regulating normal follicle growth and determining ovulation rate. BMPs exert their effects via BMP receptors (BMPR-IA, -IB and -II). However, there is a paucity of information relating to the expression of the BMPRs within the ovary of large polyovular species such as the pig. Furthermore, there is a lack of information on the expression of BMPRs by fetal ovaries of any species. The purpose of this study was to investigate temporal and spatial expression of the BMPRs in the porcine ovary, at different developmental stages. Immunohistochemistry for BMPR-IA, BMPR-IB and BMPR-II was performed using sections from paraffin wax-embedded ovaries, obtained from fetal (n = 15), prepubertal (n = 3) and cycling postpubertal (n = 4) pigs. Results confirmed the presence of all three receptors in the fetal egg nests and in the granulosa cell layer of follicles ranging from primordial to late antral stages. Immunostaining was also observed in oocytes, theca layer, corpus luteum and ovarian surface epithelium. The expression of BMPRs by fetal ovaries may be related to follicle formation, whereas expression in pre- and post-pubertal animals indicates BMPs are involved in regulating porcine ovarian follicle growth. 相似文献
7.
The role of serous tumors of low malignant potential (LMP) in the development of invasive epithelial cancer of the ovary is debatable. This review summarizes the current clinical, genetic, and genomic evidence for the existence of a continuum comprising both LMP serous tumors and low-grade serous ovarian carcinomas. 相似文献
8.
Osterberg L Akeson M Levan K Partheen K Zetterqvist BM Brännström M Horvath G 《Cancer Genetics and Cytogenetics》2006,167(2):103-108
Borderline tumors of the ovary comprise 10-20% of all epithelial ovarian tumors, and are placed between clearly benign and obviously malignant ovarian tumors. The issue of whether borderline tumors are precursors of invasive carcinoma or distinct clinical entities, however, is still the subject of discussion. To increase our understanding in relation to this issue, the aim of our study was to analyze both serous borderline and invasive ovarian tumors, and to investigate early carcinogenesis in serous ovarian tumors. Using comparative genomic hybridization, we compared cytogenetic changes in borderline ovarian tumors and stage I invasive tumors. The average number of genetic alterations differed significantly between the borderline and the invasive tumors (1.9 and 9.2, respectively). The most common genetic alterations among the borderline tumors were loss of chromosome 17, 20q, and 18p, and gain of 12p13 approximately q23. These changes were also found among the invasive tumors in a similar percentage. In conclusion, we found four distinct cytogenetic alterations that might be early events in serous ovarian tumors, and that might also characterize a subgroup of borderline ovarian tumors that may have the potential to progress and develop malignancy. 相似文献
9.
Mariola ?liwińska-Mossoń MD Ph.D. Halina Milnerowicz Jerzy Rabczyński Stanis?aw Milnerowicz 《Archivum immunologiae et therapiae experimentalis》2009,57(4):295-301
Introduction The objective of this study was to determine the expression levels of metallothionein (MT) and p53 protein, recognized neoplastic
transformation markers, in pancreatic serous cystadenomas (SCA) and adenomocarcinomas.
Materials and Methods Neoplastic pancreatic tissue was taken from 20 patients with diagnosed benign (SCA: 5 cases) or malignant tumors (adenomocarcinomas:
15 cases) and control pancreatic tissue from healthy persons who had died in car accidents. Sections were stained with hematoxylin-eosin.
Immunohistochemical localization of MT and p53 protein was carried out by LSAB2-HRP using specific antibodies against MT and
p53.
Results Metallothionein expression was observed only in the epithelial cells of the neoplastic tissue of SCAs. MT expression in the
cystadenomas was weaker than in the healthy pancreatic tissue. No tissue was found with p53 protein expression. In the adenomocarcinomas,
positive staining for MT was observed in 67% and p53 was positive in the carcinoma cells.
Conclusion The weak MT expression and lack of p53 protein expression in pancreatic SCAs confirms the lack of local invasive potential
of the neoplastic lesion. Increased expressions of MT and p53 were observed in the less differentiated tumors. Thus the expression
of MT may be a potential prognostic marker for tumors. 相似文献
10.
M J Egan J Crocker J Newman M Collard 《Archives of pathology & laboratory medicine》1986,110(8):765-767
We applied a peroxidase-antiperoxidase technique for S100 protein to 73 tumors of skin and skin adnexa. These included 15 eccrine tumors, 11 apocrine tumors, 18 tumors with differentiation toward hair, two sebaceous adenomas, one mixed tumor of the scalp, ten dermatofibromas, ten basal cell carcinomas, five squamous cell carcinomas, and one clear cell acanthoma. Consistent results were obtained. Occasional cells in eccrine tumors showed strong positive staining, as did the Langerhans' cells in the squamous cell carcinomas and the clear cell acanthoma. The cells of the apocrine tumors showed moderate to weak staining, and the tumors with differentiation toward hair, the sebaceous adenomas, and the mixed tumor of the scalp showed uniform negative staining, as did basal cell carcinomas and dermatofibromas. 相似文献
11.
《Pathology, research and practice》2014,210(11):726-732
The subcellular localization of WT1 is controversial and has received little attention in the epithelial tumors of salivary glands. Paraffin-embedded, surgical specimens from 80 salivary tumors were investigated by immunohistochemistry using a monoclonal, anti-WT1 antibody (6F-H2, Dako). Immunostaining was seen in 14/14 pleomorphic adenomas (PAs), 6/6 myoepitheliomas, 4/4 basal cell adenomas, 4/4 canalicular adenomas, 0/7 Warthin tumors, 0/1 oncocytoma, 1/6 acinic cell carcinomas (Cas), 0/11 mucoepidemoid Cas, 1/11 adenoid cystic Cas, 11/12 polymorphous low-grade adenocarcinomas (PLGAs), 1/2 Ca ex PA, 0/1 salivary duct Ca and 0/1 clear cell adenocarcinoma. Stained-cell subpopulations up to 90% were not uncommon in the benign tumors. Up to 80% of cells in PLGA could be stained. Staining was weak to intense and confined to the cytoplasm of preferentially non-luminal or adjacent to stroma cells. One adenoid cystic Ca showed nuclear staining. The results suggest that WT1 is often highly expressed in benign non-oncocytic salivary tumors whereas the malignant tumors show decreased expression, the exception being PLGA. The expression is usually cytoplasmic and associated with non-luminal cells. PLGA immunoreactivities could be useful in histological differential diagnosis. 相似文献
12.
Terada T 《International journal of clinical and experimental pathology》2012,5(2):140-142
Ovarian endometriosis can transform into malignant tumors. The author retrospectively examined HE slides of 112 serous tumors and 75 mucinous tumors for the existence of ovarian endometriosis. When endometriosis is present within the tumors, the term "endometriosis-derived tumor" was applied. When endometriosis is recognized adjacent to the tumor, the term "endometriosis-associated tumor" was used. Of the 112 serous tumors (46 benign, 18 borderline, and 50 malignant), 4 (3.5%) (2 benign and 2 malignant) were endometriosis-associated tumors. None was endometriosis-derived tumor. Of the 75 mucinous tumors (30 benign, 26 borderline, and 19 malignant), 4 (5%) (1 borderline and 3 benign) were endometriosis-associated tumors. No tumors showed endometriosis-derived tumors. The data suggest that endometriosis does not transform into serous and mucous tumors. The author felt the limitation of retrospective survey, because the limited numbers of slides (5 to 15) were obtained from each tumor. The author also felt that endometriosis can be difficult to discern because of degenerative changes and other similar lesions such as fallopian tube, fimbria, inclusion cysts, rete ovarii, paraovarian cyst, and Müllerian ducts remnants. Prospective study using whole ovarian examination is required. 相似文献
13.
F A Mauri S Scampini D Aldovini S Ferrero M Barbareschi P Dalla Palma 《Pathologica》1990,82(1081):487-492
The present paper investigated the distribution of AgNOR in serous tumours of the ovary, with a particular attention to borderline lesion and carcinomas. AgNOR are classified as large AgNOR (LN) and small AgNOR (SN) and are counted separately in 100 nuclei for each tumor. Total number of AgNOR was also recorded (TN). The study shows that the mean values of LN, SN and TN increase from adenomas to borderline lesions and carcinomas, with highly significant differences (p less than 0.001). LN show the most impressive differences between borderline lesion and carcinomas, without overlap of values. The follow up of the patients is not long enough for any correlation between AgNOR counts and prognosis, but preliminary data suggest that high AgNOR counts in borderline tumors should be interpreted very cautiously, because they do not seem to have any correlation with a more aggressive behaviour. 相似文献
14.
Immunohistochemical localization of Trk receptor protein in pediatric small round blue cell tumors. 总被引:3,自引:3,他引:3
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M. J. Donovan B. L. Hempstead C. Horvath M. V. Chao D. Schofield 《The American journal of pathology》1993,143(6):1560-1567
Expression of Trk protein has been documented by Northern analysis in neuroblastomas with good prognosis. To localize the expression of this protein at the cellular level within individual tumors, we adapted a recently characterized pan-Trk antibody for use in formalin fixed, paraffin-embedded tissue. We have examined a group of small round blue cell tumors occurring in children, including both high and low stage neuroblastomas, to assess the presence or absence of Trk expression and its cellular localization. Positive staining for Trk protein was observed in four of four low stage (good prognosis) neuroblastomas, five of five primitive neuroectodermal tumors/Ewing's sarcoma, five of five rhabdomyosarcomas, and no lymphomas. Within the neuroblastomas, expression of Trk protein was most striking in ganglion cells, in which positive cytoplasmic staining was demonstrated regardless of tumor stage. The latter observation may lend further insight into the pathobiology of this malignant childhood tumor. 相似文献
15.
Immunohistochemical localization of murine stage-specific embryonic antigens in human testicular germ cell tumors. 总被引:3,自引:1,他引:3
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I. Damjanov N. Fox B. B. Knowles D. Solter P. H. Lange E. E. Fraley 《The American journal of pathology》1982,108(2):225-230
Monoclonal antibodies raised against and/or recognizing stage-specific antigens on preimplantation mouse embryos and stem cells of murine teratocarcinoma were used to localize these antigens immunohistochemically on human testicular germ cell tumors. SSEA-1, the antigen found on mouse embryonal carcinoma (EC) cells and embryonic cells from the 8-cell stage embryo onward, including the fetal primordial germ cells, was detected on yolk sac carcinoma components of human tumors, but not on EC cells. SSEA-3, the antigen found on follicular ova, fertilized eggs, early cleavage stage embryonic cells, and visceral endodermal cells of the mouse embryo, but not on mouse EC cells, was detected on human EC cells. Both antigens were found on the cell surface of fetal testicular germ cells but not in the seminiferous tubules of adult human testes. These data point out differences between human and murine EC cells suggesting that human EC cells correspond developmentally to a less mature embryonic cell than the murine EC cells. The possible histogenesis of human germ cell tumors from primordial and/or fetal germ cells is briefly discussed. 相似文献
16.
Positive immunohistochemical staining for three metal binding proteins, ceruloplasmin, lactoferrin, and transferrin, has been
suggested to be a reliable diagnostic marker of malignant but not benign thyroid neoplasms. We tested this hypothesis on a
series of 9 nodular hyperplasias, 17 follicular adenomas, 54 papillary carcinomas, 20 follicular carcinomas, and 3 anaplastic
carcinomas of thyroid using formalin-fixed paraffin-embedded tissues. We found focal staining for ceruloplasmin and lactoferrin
in approximately 25% of follicular adenomas examined; focal ceruloplasmin positivity was also seen in nonneoplastic tissues
surrounding thyroid neoplasms. No staining for these markers was found in malignant neoplasms or hyperplasias. Transferrin
was found in 55% of papillary carcinomas, but more follicular adenomas (20%) than follicular carcinomas (11%) were positive
using this antiserum. These findings show that immunostaining for these antigens is not a reliable method to distinguish benign
from malignant thyroid lesions of follicular cell origin. 相似文献
17.
Danielle Westfall MD Andres A. Roma MD Elvio G. Silva MD 《Annals of diagnostic pathology》2009,13(4):285-290
Most carcinomas of the ovary are diagnosed as serous carcinomas, even when they do not have featured characteristics of serous neoplasms. In this review article, we describe and illustrate the 7 different types of ovarian carcinomas. We believe that it is essential to separate these tumors because it is most probable that they follow different molecular pathways and/or hormonal backgrounds. 相似文献
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20.
Immunohistochemical localization of placental-like alkaline phosphatase in testis and germ-cell tumors using monoclonal antibodies. 总被引:1,自引:1,他引:1
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Six monoclonal antibodies raised against the human placental alkaline phosphatase (ALP) recognizing distinct antigenic determinants on the surface of this isozyme were used for immunohistochemical studies of adult and fetal human testes and testicular germ-cell tumors. ALP reacting with all six antibodies was defined as placental, whereas ALP reacting with some but not all antibodies was labeled as placental-like. ALP reacting with one of the monoclonal antibodies that recognizes a determinant common to intestinal and placental ALP was tentatively considered probably intestinal, unless it reacted with any other monoclonal placental specific antibody. Using this approach, the authors have identified placental ALP in 4 of 7 seminomas, 3 of 7 tumors composed in part or fully of embryonal carcinoma, and 1 yolk sac carcinoma. Placental-like ALP was identified in 2 additional seminomas and 4 embryonal carcinoma-containing tumors, whereas 1 seminoma and 1 benign teratoma were devoid of either placental or placental-like ALP. Trophoblastic giant cells in 2 seminomas and 3 teratocarcinomas expressed only the antigenic determinant common to placental and intestinal ALP. The authors thus show that testicular tumor cells may express either placental or placental-like ALP and that in some instances, the tumor isozyme is antigenically different from ALP found on either fetal or adult testicular germ cells. 相似文献