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Prostate cancer being the world's leading cause of cancer and also the second most common cancer in men is posing challenges in its diagnosis. Immunohistochemistry with markers like high molecular weight cytokeratin, p63 aid in the diagnosis. The absence of p63 and high molecular weight cytokeratin and presence of p504s in the biopsies indicate malignant lesions. Yet, there is a loophole to this too. A rare case of p63-positive prostatic adenocarcinoma in an 87-year-old patient, with immunohistochemistry results showing overexpression of p63 in the nuclei of the malignant glands. This tumor shows high molecular weight cytokeratin negativity, and p504s positivity. Prognosis of this variant of the tumor is mostly favorable. Prompt treatment will halt the progression of this tumor and prevent paraplegia. Radical prostatectomy could be avoided by treatment modalities like androgen blockade and brachytherapy, as morbidity is very high with radical prostatectomy surgery.
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Urinary bladder neoplasm is the 10 most common cancer in the world, predominantly affecting males. Nowadays incidence of urinary bladder carcinoma in female has increased. It is a uncommon type carcinoma of urinary bladder. It resembles to non-keratinizing carcinoma of nasopharynx. This study report a case of 65 years old male presented with painless gross hematuria for 3 weeks. Patient was a known case of Meckel's diverticulum. Ultrasonography and cystoscopy showed a mass on lateral wall of urinary bladder measuring 3x3 cm . A radical cystectomy of the urinary bladder tumor was done. He was diagnosed as case of lymphoepithelioma like carcinoma of urinary bladder along with benign prostate hyperplasia and Meckel's diverticulum was made with stage 2. According to the WHO classification criteria, Lymphoepithelioma like carcinoma is a subtype of undifferentiated carcinomas. Immunohistochemical stains are helpful to differentiate Lymphoepithelioma from primary lymphoma of the bladder. Differentiation of LELCB from urothelial carcinoma is important, since it has better prognosis compared to pure urothelial carcinoma. It is important to diagnose this neoplasm for therapeutic as well as prognostic purpose.
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Background@#Lung cancer is the leading cause of cancer death in both men and women. In the past decade, histopathological classification of lung cancer has become increasingly important in selecting the appropriate treatment.@*Methods@#All cases of lung cancer diagnosed pathologically in the last 2.5-year period were retrospectively identified at National Cancer Center and performed by descriptive case series design.@*Results@#The average age of our participants was 62, of which 82.2% were men. A total of 214 cases of lung cancer were reported, including 142 (66.4%) squamous cell carcinoma (SCC), 34 (16%) adenocarcinoma (AC), 4 (1.7%) NSCLC, 29 (13.6%) small cell carcinoma (SmCC) and 5 (2.3%) cases of other/unspecified type. Based on only morphology, initially 32 (17.7%) cases of NSCLC were diagnosed, whereas after immunohistochemistry (TTF-1 or NAPA positive/p63 negative, and vice versa) staining, this category reduced to 2.2%.@*Conclusions@#Among both males and females, SCC which is highly related to smoking was the most common histologic type of lung cancer. Our results showed that an approach of using only a two-antibody panel (p63 and TTF-1) might help in the reduction of diagnostic category of NSCLC-NOS significantly.
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ABSTRACT BACKGROUND: Tumor protein p63 (p63) has been reported to be highly expressed in giant cell tumor of bone (GCTB). Whether p63 can be treated as a diagnostic marker for GCTB remains unclear. OBJECTIVE: We conducted a meta-analysis to evaluate the applicability of p63 in diagnosing GCTB. DESIGN AND SETTING: Systematic review and meta-analysis carried out in a public hospital, Hong Kong, China. METHODS: We searched PubMed, EMBASE and the Cochrane Library from inception to April 30, 2019. Literature in English or Chinese about the differential diagnosis of GCTB using p63 were included. Animal experiments, reviews, correspondence, case reports, expert opinions and editorials were excluded. Studies were also excluded if they did not provide sufficient information to construct a 2 × 2 contingency table. We calculated individual and pooled sensitivities and specificities. We used I² as an indicator of heterogeneity. RESULTS: Out of 88 records identified, 8 articles on 788 GCTB patients fulfilled the inclusion criteria and were included in the present analysis. Bivariate analyses yielded a pooled mean sensitivity of 0.87 (95% confidence interval, CI, 0.72-0.95) and specificity of 0.71 (95% CI, 0.56-0.82) for using p63 as a biomarker in diagnosing GCTB. The area under the receiver operating characteristic curve was 0.86 (95% CI, 0.82-0.88). CONCLUSION: p63 is a helpful indicator in diagnosing GCTB due to its high sensitivity and specificity. Nonetheless, the results need to be carefully interpreted based on other diagnostic methods such as imaging. SYSTEMATIC REVIEW REGISTRATION: 164115 (PROSPERO registration number)
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Humans , Giant Cell Tumor of Bone/diagnosis , Membrane Proteins , Biomarkers, Tumor , Sensitivity and SpecificityABSTRACT
@#The continuous proliferation and differentiation of limbal stem cells(LSCs)maintain the integrity and homeostasis of the corneal epithelium, which plays an important role in protecting the cornea and maintaining corneal transparency. Currently limbal stem cell deficiency(LSCD)is one of major causes of blindness in corneal diseases, and transplantation of LSCs is the hot therapeutic option. The effectiveness of transplantation mainly depends on the proportion of LSCs to the total transplanted cells, so it is very important to clearly identify LSCs. There are many markers of LSCs, but their specificity is controversial. Therefore, one of the main challenges in LSCs transplantation is the lack of definitive cell markers. In this paper, the latest research progress of LSCs markers is reviewed.
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Background: Gestational trophoblastic disease (GTD) constitutes a spectrum of tumors and tumor-like conditions, characterized by proliferation of pregnancy-associated trophoblastic tissue of progressive malignant potential. It is very difficult to differentiate these complex groups of lesions basing on histomorphology alone. Immunohistochemistry (IHC) with cyclin E, P63, and Ki-67 has a definite role in the identification of different trophoblasts and entities of GTD and also in the determination of biological behavior. Aims: The aim of this study is to find the differential expression of cyclin E, p63, and Ki-67 in normal placenta, hydropic abortus (HA), and various entities of GTD. Design and Settings: A prospective case–control study conducted in a government medical college. Methods: Total 96 cases, divided into Group A (48 histologically confirmed cases of GTD) and Group B (controls comprising 8 HA and 40 normal placentas of different trimesters), were studied. The histological samples were subjected to IHC using cyclin E, Ki-67, and p63. Statistical Analysis: Results were analyzed using SPSS statistical method. Results: Among the three immunomarkers used, Cyclin E and Ki-67 show statistically significant difference (P < 0.05) when compared between GTD and control groups, but it was insignificant for p63 (P = 0.369). Strong staining intensity of cyclin E and Ki-67 is seen in complete moles, choriocarcinoma, and placental site trophoblastic tumor. Conclusion: This study was done to evaluate the role of cell cycle regulatory proteins such as cyclin E and p63 and proliferation marker Ki-67 in the detection of various trophoblasts and differential diagnosis of the lesions associated with them.
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P53 and its family member p63 play important roles in cellular senescence and organismal aging. In this study, p53 and p63 immunoreactivity were examined in the hippocampus of young, adult and aged mice by using immunohistochemistry. In addition, neuronal distribution and degeneration was examined by NeuN immunohistochemistry and fluoro-Jade B fluorescence staining. Strong p53 immunoreactivity was mainly expressed in pyramidal and granule cells of the hippocampus in young mice. p53 immunoreactivity in the pyramidal and granule cells was significantly reduced in the adult mice. In the aged mice, p53 immunoreactivity in the pyramidal and granule cells was more significantly decreased. p63 immunoreactivity was strong in the pyramidal and granule cells in the young mice. p63 immunoreactivity in these cells was apparently and gradually decreased with age, showing that p63 immunoreactivity in the aged granule cells was hardly shown. However, numbers of pyramidal neurons and granule cells were not significantly decreased in the aged mice with normal aging. Taken together, this study indicates that there are no degenerative neurons in the hippocampus during normal aging, showing that p53 and p63 immunoreactivity in hippocampal neurons was progressively reduced during normal aging, which might be closely related to the normal aging processes.
Subject(s)
Adult , Animals , Humans , Mice , Aging , Cellular Senescence , Fluorescence , Hippocampus , Immunohistochemistry , Neurons , Pyramidal CellsABSTRACT
Objective: To investigate the correlation between the expression of p53, p63 or PIM1 protein and the survival of patients with nodal or extranodal diffuse large B-cell lymphoma (DLBCL). Methods: Immunohistochemical staining was applied to examine the expressions of p53, p63 and PIM1 proteins in nodal or extranodal DLBCL. The differences in the expressions of p53, p63 and PIM1 proteins between nodal and extranodal DLBCL were analyzed by χ2 test. Kaplan-Meier survival curve and COX proportional hazard model were used to analyze the relationship between the clinicopathological factors (including p53, p63 and PIM1 expressions) and the prognosis of patients with nodal or extranodal DLBCL. Results: Among 212 DLBCL cases, there were 101 nodal cases and 111 extranodal cases (including 55 cases of gastrointestinal DLBCL and 56 cases of non-gastrointestinal DLBCL). The expression rates of p53, p63 and PIM1 proteins in all cases were 19.0%, 25.2% and 54.7%, respectively. Among them, p53 was expressed more frequently in extranodal gastrointestinal cases (P 0.05). Much more p53-positive cases were observed with international prognostic index (IPI) ≥ 3 (P 0.05). Survival analysis showed that the expression of p53 or p63 protein was a significant inferior prognostic factor for overall survival (OS) and progression-free survival (PFS) in nodal patients or extranodal non-gastrointestinal DLBCL patients, respectively (both P < 0.05), while PIM1 expression was an inferior prognostic factor for PFS in extranodal gastrointestinal cases (P < 0.05). Conclusion: The molecular mechanisms of DLBCL pathogenesis may be different between different locations of DLBCL, which is worth further exploration.
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Objective:To establish a radiomics signature based on CT images of non-small cell lung cancer (NSCLC) to predict the expression of molecular marker P63.Methods:A total of 245 NSCLC patients who underwent CT scans were retrospectively included.All patients were confirmed by histopathological examinations and P63 expression were examined within 2 weeks after CT examination.Radiomics features were extracted by MaZda software and subjective image features were defined from original non-enhanced CT images.The Lasso-logistic regression model was used to select features and develop radiomics signature,subjective image features model,and combined diagnostic model.The predictive performance of each model was evaluated by the receiver operating characteristic (ROC) curve,and compared with Delong test.Results:Of the 245 patients,96 were P63 positive and 149 were P63 negative.The subjective image feature model consisted of 6 image features.Through feature selection,the radiomics signature consisted of 8 radiomics features.The area under the ROC curves of the subjective image feature model and the radiomics signature in predicting P63 expression statue were 0.700 and 0.755,respectively,without a significant difference (P＞0.05).The combined diagnostic model showed the best predictive power (AUC=0.817,P＜0.01).Conclusion:The radiomics-based CT scan images can predict the expression status of NSCLC molecular marker P63.The combination of the radiomics features and subjective image features can significantly improve the predictive performance of the predictive model,which may be helpful to provide a non-invasive way for understanding the molecular information for lung cancer cells.
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There is an increasing need to subtype non-small cell lung carcinoma (NSCLC) into squamous cell carcinoma and adenocarcinoma of lung, and this subtyping guides the treatment with the advent of targeted therapies that are available for cases of adenocarcinoma of lung, by which prognosis can be improved. In cases of lung cancer, many a times, cytology may be the only material available to render a diagnosis; cases that are poorly differentiated on morphology are challenging to subtype and the immunocytochemical markers can be applied on these cytosmears for further subtyping of NSCLC. Aims and Objectives This study was carried out to check the expression of p63 and TTF-1 in diagnostically difficult cases, such as NSCLC, poorly differentiated lung carcinomas on pulmonary cytology samples, and to further subtype them into squamous cell and adenocarcinoma. Materials and Methods The study period was from 1 September 2013 to 31 August 2015; during this span, the total number of malignancies that were diagnosed on cytology was 585 cases. Prestained slides (haematoxylin and eosin or H&E, Papanicolaou or Pap) were collected over a span of these two years and these were destained using 1% acid alcohol with intermittent washing followed by running of p63 and TTF-1 as the immunocytochemical markers. Observations and Results The smears that are positive for p63 are labelled as squamous cell carcinoma and those that are positive for TTF-1 are labelled as adenocarcinoma, as these markers are highly sensitive and specific for the diagnosis of squamous cell and adenocarcinoma, respectively; neuroendocrine markers were used in the cases that were positive for TTF-1 to rule out small cell carcinoma. Conclusion: By the positive expression of p63 and TTF-1, the cases were labelled as squamous cell carcinoma and primary adenocarcinoma of lung, with due considerations given to the clinical and radiological parameters.
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BACKGROUND: Lung cancer is the third most common cancer worldwide. With major advances in the molecular testing of lung cancers and the introduction of targeted therapies, the distinction between adenocarcinoma and squamous cell carcinoma as well as pathologic subtyping has become important. Recent studies showed that p40 is highly specific for squamous and basal cells and is superior to p63 for diagnosing lung squamous cell carcinoma. The aim of this study was to evaluate the use of p40 immunohistochemical stain in the diagnosis of non-small cell lung carcinoma and its potential to replace current p63 antibody as the best immunohistochemical squamous marker. METHODS: Seventy formalin-fixed paraffin-embedded cases previously diagnosed as primary lung squamous cell carcinoma (n = 35) and lung adenocarcinoma (n = 35) from January 2008 to December 2016 were retrieved. The results of tumour cell immunoreactivity for p40 and p63 antibodies in lung squamous cell carcinoma and lung adenocarcinoma were compared. RESULTS: p40 was expressed in 27 cases of lung squamous cell carcinoma (77.1%). All cases of lung adenocarcinoma (35/35, 100%) were negative for p40. p63 expression was positive in 30 cases of lung squamous cell carcinoma (85.7%) and 13 cases of lung adenocarcinoma (37.1%). Reactivity for both p40 and p63 in lung squamous cell carcinoma was strong and diffuse, whereas variable reactivity was observed in lung adenocarcinoma. CONCLUSIONS: p40 is an excellent marker for distinguishing lung squamous cell carcinoma from adenocarcinoma, and p40 expression is equivalent to p63 expression in lung squamous cell carcinoma.
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Adenocarcinoma , Antibodies , Carcinoma, Squamous Cell , Diagnosis , Epithelial Cells , Immunohistochemistry , Lung Neoplasms , LungABSTRACT
Objective To explore the expressions of N-cadherin,E-cadherin,and P63 protein in hepatocellular carcinoma (HCC) tissues,and the relationship between their expressions and clinicopathologic factors.Methods Immuohistochemistry was used to detect the expressions of N-cadherin,E-cadherin,and P63 protein in 60 normal liver tissues,60 HCC tissues and their peficancerous tissues,and then the relationship between their expressions and clinicopathologic factors were analyzed.Results The positive expression rates of N-cadherin in normal liver tissue,peficancerous tissues and HCC tissue were gradually decreased,the difference was statistically significant (P ＜ 0.05).And The positive expression rates of E-cadherin in normal liver tissue,peficanceroustissues and HCC tissue were gradually increased,the difference was statistically significant (P ＜ 0.05).The expression of P63 in normal liver tissue was significantly higher than that in peficancerous tissues and HCC tissue,and the differences wcrc all significant(P ＜ 0.05).The positive rates of expression of N-cadherin were related with clinical stage,portal vein invasion,metastasis and pathological grading.The positive rates of expression of E-cadherin were related with clinical stage,portal vein invasion and pathological grading.The positive rates of expression of P63 were related with clinical stage,tumor sizeand pathological grading.Spearman rank correlation analysis showed that the expression of P63was positively correlated with the expression of E-cadherin,but negatively correlated with the expression of N-cadherin.Conclusion The high expression of N-cadherin and low expression of P63 protein,E-cadherin of HCC tissues may play a role in tumor metastasis and carcinogenesis.
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OBJECTIVES: Advancements in non-small cell lung cancer treatment based on targeted therapies have made the differentiation between adenocarcinoma and squamous cell carcinoma increasingly important. Pathologists are challenged to make the correct diagnosis in small specimens. We studied the accuracy of an immunohistochemical panel in subclassifying non-small cell lung cancer in routine small biopsies and compared the results with the diagnosis from resected lung specimens, autopsy samples or biopsied/resected metastases. METHODS: In total, 340 lung cancer biopsies were investigated for the expression of CK5, TTF1, p63 and surfactant. RESULTS: We characterized 166 adenocarcinomas and 124 squamous cell carcinomas. Overall, 85% of cases displayed binary staining (TTF1 positive/p63 negative, and vice versa). The diagnoses of ten cases with a morphology that indicated a specific tumor subtype were changed after immunohistochemistry (IHC). A second specimen was available for 71 patients, and the first diagnosis at biopsy was confirmed in 95% of these cases. Most non-small cell lung cancer cases present a binary immunohistochemical profile in small biopsies, contributing to good diagnostic accuracy with routine markers. In a small proportion of cases, the diagnosis can be changed after IHC even when the morphological aspects indicate one specific tumor subtype. CONCLUSIONS: We recommend that routine small biopsies of lung cancer without classic morphology should be subjected to a minimum immunohistochemical panel to differentiate adenocarcinoma from squamous cell carcinoma.
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Humans , Male , Female , Middle Aged , Aged , Carcinoma, Squamous Cell/pathology , Adenocarcinoma/pathology , Biomarkers, Tumor/analysis , Carcinoma, Non-Small-Cell Lung/pathology , Lung Neoplasms/pathology , Biopsy , Immunohistochemistry , Carcinoma, Squamous Cell/chemistry , Adenocarcinoma/chemistry , Retrospective Studies , Diagnosis, Differential , Lung Neoplasms/chemistryABSTRACT
Objective To investgate the effect of nervous growth factor(NGF) on the proliferation of the limbal stem cells(LSCs) in vitro,and the relationship bewteen expression of its receptors and cell proliferation.Methods After primary cultured,LSCs were divided into the control group and the NGF group.Selected cells cultured of 1 d,3 d and 5 d in the two groups and examined the expression of p63,TrkA,p75 with immunohistochemistry.Results The average gray scale values of expression of p63,TrkA and p75 at 1 d,3 d and 5 d in NGF group were significant decreased compared with the corresponding data in the control group(P<0.05).Pearson's correlations analysis showed that the average gray scale values of expression of TrkA and p63 were of statistically significant differences(P<0.05).Conclusion These results highlight that NGF could maintain the stem cell properties of LSCs.LSCs could exepress the NGF receptors of TrkA and p75,and the expression of TrkA showed a correlation with LSCs proliferation.
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Objective To investigate the expression and significance of cellular inhibitor of protein phosphatase 2A (CIP2A), bcl-2 and p63 in papillary thyroid cancer (PTC). Methods Using immunohistochemistry to detect the expression of CIP2A, bcl-2 and p63 in 30 cases of nodular goiter (NG), 30 cases of thyroid adenoma (TA) and 57 cases of PTC [including classical PTC (cPTC) 20 cases, papillary microcarcinoma (PMC) 20 cases, follicular thyroid papillary carcinoma (FPTC) 7 cases]. Results In NG group, TA group and PTC group, positive rates of CIP2A were 0, 0 and 94.74 % (54/57), respectively. The differences were statistically significant. In NG group, TA group and PTC group, positive rates of bcl-2 were 16.67 % (5/30), 13.33 % (4/30) and 85.96 % (49/57), respectively. The differences were statistically significant. In each group, positive rates of p63 were 6.67% (2/30), 3.33% (1/30) and 5.26% (3/57), respectively, no significant difference among them. In PTC, expression of CIP2A and bcl-2 were significantly higher than in NG and TA (χ2 = 105.56, P= 0.00; χ2 = 58.95, P= 0.00). Furthermore, the expression of CIP2A and bcl-2 had correlation in PTC (r=0.94, P=0.00). The expression of CIP2A, bcl-2 and p63 had no significantly difference among all the PTC subtype (χ2 values were 2.02, 2.64, 1.85; all P> 0.05). The expression of CIP2A, bcl-2 and p63 was not associated with patients'age, sex, site, lymph node metastasis (all P>0.05). Conclusions High expression of CIP2A and bcl-2 is associated with PTC, and the expression of CIP2A and bcl-2 has correlation in PTC. The expression of p63 has no correlation with PTC.
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OBJECTIVES: There are only a limited number of studies on cyclin D1 and p63 expression in oral squamous cell carcinoma (OSCC) and leukoplakia. This study compared cyclin D1 and p63 expression in leukoplakia and OSCC to investigate the possible correlation of both markers with grade of dysplasia and histological grade of OSCC. MATERIALS AND METHODS: The study included a total of 60 cases, of which 30 were diagnosed with OSCC and 30 with leukoplakia, that were evaluated immunohistochemically for p63 and cyclin D1 expression. Protein expression was correlated based on grades of dysplasia and OSCC. RESULTS: Out of 30 cases of OSCC, 23 cases (76.7%) were cyclin D1 positive and 30 cases (100%) were p63 positive. Out of 30 cases of leukoplakia, 21 cases (70.0%) were cyclin D1 positive and 30 (100%) were p63 positive (P<0.05). CONCLUSION: The overall expression of cyclin D1 and p63 correlated with tumor differentiation, and increases were correlated with poor histological grades, from well-differentiated to poorly-differentiated SCC. Increased cyclin D1 and p63 expression was associated with the severity of leukoplakia. Based on these results cyclin D1 and p63 products can be a useful tool for improved leukoplakia prognosis.
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Carcinoma, Squamous Cell , Cyclin D1 , Cyclins , Epithelial Cells , Immunohistochemistry , Leukoplakia , PrognosisABSTRACT
OBJECTIVES: There are only a limited number of studies on cyclin D1 and p63 expression in oral squamous cell carcinoma (OSCC) and leukoplakia. This study compared cyclin D1 and p63 expression in leukoplakia and OSCC to investigate the possible correlation of both markers with grade of dysplasia and histological grade of OSCC. MATERIALS AND METHODS: The study included a total of 60 cases, of which 30 were diagnosed with OSCC and 30 with leukoplakia, that were evaluated immunohistochemically for p63 and cyclin D1 expression. Protein expression was correlated based on grades of dysplasia and OSCC. RESULTS: Out of 30 cases of OSCC, 23 cases (76.7%) were cyclin D1 positive and 30 cases (100%) were p63 positive. Out of 30 cases of leukoplakia, 21 cases (70.0%) were cyclin D1 positive and 30 (100%) were p63 positive (P<0.05). CONCLUSION: The overall expression of cyclin D1 and p63 correlated with tumor differentiation, and increases were correlated with poor histological grades, from well-differentiated to poorly-differentiated SCC. Increased cyclin D1 and p63 expression was associated with the severity of leukoplakia. Based on these results cyclin D1 and p63 products can be a useful tool for improved leukoplakia prognosis.
Subject(s)
Carcinoma, Squamous Cell , Cyclin D1 , Cyclins , Epithelial Cells , Immunohistochemistry , Leukoplakia , PrognosisABSTRACT
Sclerosing Adenosis (SA) is a lobulocentric proliferative process that involves both the epithelial and the mesenchymal component of the breast suggesting benignity. The disease has an increased incidence among reproductive-age and perimenopausal women, especially between 35 and 50 years of age. The clinical, radiological, and histopathological properties of sclerosing adenosis may resemble malignancy, which is the factor responsible for the clinical significance of the disease. Early diagnosis of sclerosing adenosis (SA) is very important as it is associated with a doubling of the risk of developing breast carcinoma, even though its role in carcinogenesis remains to be controversial and unclear. The main histopathological alterations of the terminal ductal lobular unit (TDLU) present as a widening and distortion of lobules with an increased number of acini and stromal fibrosis. The lesion is also called an “adenosis tumor of the breast” or “nodular sclerosing adenosis” if it presents as a palpable mass. Sclerosing adenosis is present in 12% of benign proliferative lesions and 20-25% of malignant lesions on histopathological examination. On mammography (MG), it can present as opacity, focal asymmetry, architectural distortion, or micro calcifications, mimicking a carcinoma. We have presented a case of 42 year old female who was diagnosed as carcinoma breast clinically and on radiology. Mammography showed a fibrosed lesion of size 4.5x3 cm with focal specks of microcalcification and irregular borders. But repeated fine needle aspiration cytology (FNAC) smears revealed small and large clusters of ductal epithelial cells with minimal anisonucleosis with background showing amorphous crystalline material and stromal fragments. Basing on FNAC, plan of surgery changed and a wide local excision with 2 cm normal margins was done and the specimen sent for histopathological examination (HPE), which revealed the lesion as sclerosing adenosis (SA).
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Objective To measure the expressions of miR-203 and its downstream target genes p63 and survivin in psoriasis vulgaris lesions.Methods Tissue specimens were collected from lesions of 30 patients with psoriasis vulgaris and normal skin of 30 healthy human controls.Real-time PCR was performed to detect miR-203 mRNA expression with U6 as the internal control,as well as p63 and survivin mRNA expressions with glyceraldehyde 3-phosphate dehydrogenase (GAPDH) as the internal control,and Western blot to measure the protein expressions of miR-203 targets p63 and survivin.Statistical analysis was carried out by t test for intergroup comparisons and by Pearson correlation analysis for the analysis of correlation between miR-203,p63 and survivin expressions in psoriasis vulgaris lesions.Results Compared with the normal control skin,psoriasis vulgaris lesions showed significantly decreased mRNA expression level (2-△△C△△Ct) of miR-203 (0.41 ± 0.11,t =3.16,P ＜ 0.05),but increased mRNA expression levels of p63 (4.79 ± 0.63,t =4.72,P＜ 0.05) and survivin (3.43 ± 0.46,t =4.35,P＜ 0.05).The protein expression levels of p63 and survivin in these lesions were (2.40 ± 0.23) times (t =3.87,P ＜ 0.05) and (3.49 ± 0.14) times (t =4.36,P ＜ 0.05) those in the normal control skin respectively.In psoriasis vulgaris lesions,the mRNA expression level of miR-203 showed a significantly negative correlation with that of survivin (r =-0.36,P ＜ 0.05) and p63 (r =-0.43,P ＜ 0.05).Conclusion miR-203 and its downstream target genes p63 and survivin may participate in the occurrence of psoriasis vulgaris.
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Objective To study the significant immunohistochemical marker to identify lung adenocarcinoma(ADC) and squamous cell carcinoma(SCC).Methods Three hundred and twenty-nine Choose 329 cases of nonsmall-cell lung cancer (NSCLC) were chosen.Analysis of the clinical and pathological features.The expression of cell keratin 7 (CK7),thyroid transcription factor-1 (TTF-1),Napsin A,CK5/6,p40 and p63 were detected by using immunohistochemistry.Results (1) Among 329 specimens,containing 129 cases of resections,195 cases of biopsies and 5 cases of pleural effusion specimens.(2)In these cases,187 cases were classified to be ADC,142 cases were classified to be SCC.(3) CK7,TTF-1,Napsin A,CK5/6,p40,p63 sensitivity were 97.9％,87.2％,81.3％,6.4％,3.7％,18.7％ in ADC groups,and 25.4％,11.3％,0,92.3％,95.1％,98.6％ in SCC groups,and the differences of two groups were significant statistically (x2 =190.665,187.432,214.542,242.003,274.407,206.818;P＜ 0.001).(4) In the 3 IHC of ADC,CK7 had the highest sensitivity,Napsin A had the highest specificity.In the 3 IHC of SCC,p63 had the highest sensitivity,p40 had the highest specificity.Conclusion CK7,TTF-1,Napsin A,CK5/6,p40 and p63 can be a markable panel of immunohistochemistry in the differential diagnosis of NSCLC.