RESUMEN

SUMMARY: Acrylamide (AA) is a widely used chemical and an important monomer in various industrial and laboratory processes. In addition, AA is formed during processing of starchy food at high temperature. The aim of our study was to examine effects of subchronic AA treatment on adult rat liver using histological, stereological and biochemical methods. Adult male Wistar rats were treated with AA at doses of 25 mg/kg b.w. and 50 mg/kg b.w. for three weeks. Stereological analysis showed decrease of volume density of hepatocyte cytoplasm, and increase of volume density of hepatocyte nuclei and nucleocytoplasmic ratio in AA50mg group. Immunohistochemical analysis of the liver sections showed that treatment with AA50mg increase the percentage of PCNA positive cells, while the percentage of caspase 3 positive cells was not affected by AA. PAS-staining showed that glycogen content in hepatocytes was not affected by AA. Serological examination revealed increase of lipid peroxidation in AA50mg group, while total protein concentration, protein thiol group level, as well as, paraoxonase 1 activity were not changed in AA-exposed animals. Stereological and immunohistochemical analyses of adult liver sections suggest increase of proliferation in AA50mg group, while increase of lipid peroxidation in serum of AA50mg group indicates oxidative stress induction.

La acrilamida (AA) es un químico ampliamente utilizado y un monómero importante en varios procesos industriales y de laboratorio. Además, la AA se forma durante el procesamiento de alimentos ricos en almidón a altas temperaturas. El objetivo de nuestro estudio fue examinar los efectos del tratamiento con AA subcrónica en el hígado de rata adulta utilizando métodos histológicos, estereológicos y bioquímicos. Se trataron ratas Wistar macho adultas con AA a dosis de 25 mg/kg p.v. y 50 mg/kg de peso corporal por tres semanas. El análisis estereológico mostró una disminución de la densidad del volumen del citoplasma de los hepatocitos y un aumento de la densidad del volumen de los núcleos de los hepatocitos y la relación nucleocitoplasmática en el grupo de 50 mg de AA. El análisis inmunohistoquímico de las secciones de hígado mostró que el tratamiento con 50 mg de AA aumentó el porcentaje de células positivas para PCNA, mientras que el porcentaje de células positivas para caspasa 3 no se vio afectado por AA. La tinción con PAS mostró que el contenido de glucógeno en los hepatocitos no se vio afectado por AA. El examen serológico reveló un aumento de la peroxidación de lípidos en el grupo de 50 mg de AA, mientras que la concentración de proteína total, el nivel del grupo tiol de proteína y la actividad de paraoxonasa 1 no cambiaron en los animales expuestos a AA. Los análisis estereológicos e inmunohistoquímicos de secciones de hígado adulto sugieren un aumento de la proliferación en el grupo AA50 mg, mientras que el aumento de la peroxidación lipídica en suero del grupo AA50 mg indica inducción de estrés oxidativo.

Asunto(s)

RESUMEN

Reporting biomarkers assessed by routine immunohistochemical (IHC) staining of tissue is broadly used in diagnostic pathology laboratories for patient care. To date, clinical reporting is predominantly qualitative or semi-quantitative. By creating a multitask deep learning framework referred to as DeepLIIF, we present a single-step solution to stain deconvolution/separation, cell segmentation, and quantitative single-cell IHC scoring. Leveraging a unique de novo dataset of co-registered IHC and multiplex immunofluorescence (mpIF) staining of the same slides, we segment and translate low-cost and prevalent IHC slides to more expensive-yet-informative mpIF images, while simultaneously providing the essential ground truth for the superimposed brightfield IHC channels. Moreover, a new nuclear-envelop stain, LAP2beta, with high (>95%) cell coverage is introduced to improve cell delineation/segmentation and protein expression quantification on IHC slides. By simultaneously translating input IHC images to clean/separated mpIF channels and performing cell segmentation/classification, we show that our model trained on clean IHC Ki67 data can generalize to more noisy and artifact-ridden images as well as other nuclear and non-nuclear markers such as CD3, CD8, BCL2, BCL6, MYC, MUM1, CD10, and TP53. We thoroughly evaluate our method on publicly available benchmark datasets as well as against pathologists' semi-quantitative scoring. The code, the pre-trained models, along with easy-to-run containerized docker files as well as Google CoLab project are available at https://github.com/nadeemlab/deepliif.

RESUMEN

We present a 25-year-old female woman with a 9-year history of metrorrhagia, in whom a uterine polypoid adenomyoma (UPA) was incidentally detected. Intense nuclear staining in the uterine adenomyoma tissue showed an immunoreaction with BAF250a/ARID1A, Arginase-2 as well as 1LRH-2E1/NR5A2, suggesting a role of these proteins and transcriptional activity of their genes in uterine polypoid adenomyoma development. Neither Nidogen-2 nor SF-1/NR5A1 were expressed in UPA.

Asunto(s)

RESUMEN

The establishment of human malignant tumor cell lines can provide abundant experimental materials for understanding the biological characteristics of tumors, studying the carcinogenesis, molecular genetics and the mechanism of metastasis and evolution. In this study, a novel cell line designated ZJB-ENC1 has been established from poorly differentiated endometrioid adenocarcinoma. Cytological results showed monolayer-cultured cells were polygonal in shape and a piling-up tendency without contact inhabitation. Immunohistochemistry analysis showed that the cells were negative for ER, PR, c-erbB2, E-CAD, CD117, and OCT3/4, but strongly positive for PTEN and P16. Meanwhile, the tumorigenicity of ZJB-ENC1 was confirmed by subcutaneous transplantation of the cells into a xenograft mouse model. In addition, the results of the whole exome sequencing revealed a unique genomic characteristic of ZJB-ENC1 cells, all common and novel SNPs and InDels were identified. In conclusion, this new stable cell line may promote basic and clinical research on endometrial cancer (EC).

RESUMEN

Thymic carcinoma that occurs outside the anterosuperior mediastinum is rare. To date, only five cases of ectopic thymic carcinoma have been reported in the English-language literature. Here, we report a case of 43-year-old Chinese man who suffering from ectopic thymic carcinoma of the parotid gland. Magnetic resonance imaging (MRI) showed a round soft tissue mass in the parotid gland. After enhancement, it showed the edge of the tumor was rough, with irregular shallow lobes. Histological examination (HE) showed tumor cells were invasive, and partially arranged in a lobulated structure. These characteristics were similar to previous English-language literature reports. Immunohistochemical (IHC) examination showed that tumor cells were positive for CD5, CD117 and p63, which confirms this case is ectopic thymic carcinoma. Postoperatively the patient received combined paclitaxel plus carboplatin chemotherapy. Currently, no evidence of metastasis or recurrence has been found in this patient.

RESUMEN

Objective To investigate the expression and significance of bone morphogenetic protein?2 (BMP?2) and phosphatase and tensin homolog deleted on chromosome ten (PTEN) in incipient,recurrent and malignant salivary gland pleomorphic adenoma??Methods A total of 93 cases of salivary gland pleomorphic adenoma in Kailuan general hospital from 2008 to 2017 were collected,including 54 in incipient group (group A,47 cases in benign group A1,7 cases in malignant group A2),39 cases in recurrent group (group B,26 cases in benign group B1,13 cases in malignant group B2)??The expression of BMP?2 and PTEN were detected by immunohistochemical detection and western blot,the correlation of BMP?2 and PTEN was analyzed by Spearman analysis??Results The immunohistochemical and western blot analysis both showed expression of BMP?2 in recurrent group was significantly higher than that in incipient cases((129??03 ±15??52) vs??(87??88±18??11),t＝－8??094,P＝0??000),and it was lower in malignant cases than that in benign cases(( 100??24 ± 25??07) vs ( 116??66 ± 26??19), t＝2??125, P＝0??040)??There was no significant difference in PTEN expression between incipient and recurrent groups (( 89??15 ± 13??92 ) vs??( 96??19 ±28??02),t＝1??055,P＝0??279),but lower PTEN expression was found in malignant cases than benign cases ((76??06±11??16) vs??(109??28±17??05),t＝7??543,P＝0??000)??BMP?2 was positively correlated with PTEN expression (r＝0??313,P＜0??05)??Conclusion BMP?2 is associated with the recurrence of salivary gland pleomorphic adenoma, and both BMP?2 and PTEN are associated with malignant in the salivary gland pleomorphic adenoma??

RESUMEN

The pollution of coastal regions worldwide has been of a great concern due to the presence of endocrine disrupting chemicals (EDCs). These chemicals find their way to the marine environment via the sewage treatment plants (STPs). Hence, this study was designed to investigate the status and sources of EDCs and their effect on fish in Kuwait's coastal areas, from the chemical and biological perspectives. The assessment of three STPs indicated the presence of significant levels of phthalates (19 and 31µg/l), alkylphenols (85 and 159ng/l), and estrogens (30 and 368ng/l) in both inflow and outflow samples. The analysis of samples from field exposure sites revealed significant levels of EDCs in seawater (phthalates: 2.1-4.6µg/l; alkylphenols: 1.2-16.4ng/l; estrogens: 0-36.2ng/l) and sediment (phthalates: 2.1-15.7mg/kg dry wt; alkyphenols: 2.5-15.1µg/kg dry wt.; estrogens: 4.1-214.2µg/kg dry wt.) samples. The biological perspective investigated through the exposure of fish to sewage outlets at five sites. The hepatosomatic index (HSI) revealed a higher level in winter samples 0.48-0.79%) in comparison to summer samples 1-1.5%). Histological observation of hepatic tissue of fish exposed during winter months in all sites, showed much less necrotic changes and hepatic vacuolation in the hepatic tissue of summer exposed fish. Imunnohistochemistry evidences revealed a significant level of positive signals and Vtg localization in the hepatic tissue as the results support the histopathological alterations observed. Results of enzyme-linked immunosorbent assay (ELISA) showed no significant difference between the plasma protein content of winter and summer samples. Overall, the study suggest that there is possible local source or a chronic input of untreated and/or partially treated water due to the significant levels of phthalates, alkyphenols, and estrogens detected in the Kuwait Bay. These levels were enough to initiate alteration in the hepatic tissue of fish exposed to the sewage outlets in Kuwait for two weeks.

Asunto(s)

RESUMEN

Objective: To explore the expression of CC chemokine receptor 6 (CCR6) in human adenoid cystic carcinoma tissue of salivary glands, and to clarify the mechanism of CCR6 in the nerve invasion of human adenoid cystic carcinoma. Methods: Immumohistochemical method (SP) was performed to detect the expression of CCR6 in 30 cases of cancer tissue of the patients with adenoid cystic carcinoma (including 18 cases in nerve invasion group and 12 cases in non-nerve invasion group) and 22 cases of normal salivary gland tissue. The relationship between the positive expression rate of CCR6 and the clinicopathological features of the patients were analyzed. Results: CCR6 was positively expressed in 22 cases among 30 cases of salivary adenoid cystic carcinoma tissue, and the positive expression rate was 73. 33%. The immunohistochemical staining showed that CCR6 mainly expressed in the cell membrane and cytoplasm of cancer cells. All of the 22 cases of normal salivary gland tissue were negative to CCR6 expression; the difference of the positive expression rate of CCR6 between two groups was statistically significant (P0. 05). Conclusion: CCR6 plays an important role in the development of human salivary adenoid cystic carcinoma and is closely related to the nerve invasion.

RESUMEN

Objective:To explore the expression of CC chemokine receptor 6 (CCR6) in human adenoid cystic carcinoma tissue of salivary glands,and to clarify the mechanism of CCR6 in the nerve invasion of human adenoid cystic carcinoma.Methods:Immumohistochemical method (SP) was performed to detect the expression of CCR6 in 30 cases of cancer tissue of the patients with adenoid cystic carcinoma (including 18 cases in nerve invasion group and 12 cases in non-nerve invasion group) and 22 cases of normal salivary gland tissue.The relationship between the positive expression rate of CCR6 and the clinicopathological features of the patients were analyzed.Results:CCR6was positively expressed in 22 cases among 30 cases of salivary adenoid cystic carcinoma tissue,and the positive expression rate was 73.33％.The immunohistochemical staining showed that CCR6 mainly expressed in the cell membrane and cytoplasm of cancer cells.All of the 22 cases of normal salivary gland tissue were negative to CCR6expression;the difference of the positive expression rate of CCR6 between two groups was statistically significant (P＜0.05).The positive expression rate in nerve invasion group and non-nerve invasion group were 94.44％(17/18) and 41.67％ (5/12),respectively;there was statistically significant between two groups (P＜0.05).The positive rates of CCR6 in the patients with salivary gland adenoid cystic carcinoma with different ages,sex and pathological types had no statistically significant differences (P＞0.05).Conclusion:CCR6 plays an important role in the development of human salivary adenoid cystic carcinoma and is closely related to the nerve invasion.

RESUMEN

Purpose To investigate the clinicopathological features, immunophenotype, molecular genetic alteration in multilocular cystic clear cell neoplasm of low malignant potential. Methods 17 cases of multilocular cystic clear cell neoplasm of low malignant potential with complete clinical data, systematic measurement and follow-up were retrospectively studied. Histopathological evaluation and immunophenotyping were examed by HE staining and EnVision two steps methods, chromosome 3p deletion was analyzed by interphase fluorescence in situ hybridization. Results In 17 cases, there were 12 males and 5 females, and the ratio of male and female was 2.4: 1. The prevalence age was at a range of 28-73 years, and the average age is54 years. Mostly of them were found by incidental or physical exmanination. Microscopically, most cysts were lined by a single layer of tumor cells with clear cytoplasm, small nuclear, and no obvious nucleoli. According to WHO/ISUP nuclear grade, they were level I. Clear cell groups similar to cells lined cysts were seen within the fibrous septa. Immunohistochemically, tumor cells were positive for CK(AE1/AE3), CK7, EMA, vimentin, CD10, CAIX, PAX-2, and PAX-8, but negative for CD68. Ki-67 index were less than 10％. The loss of heterozygosity of 3p chromosome was detected in 11 cases and the rate of the loss of heterozygosity was 64.7％. Conclusion Multilocular cystic clear cell neoplasm of low malignant potential is a relatively rare type of renal cell carcinoma with low malignant potential and a good prognosis. It is suggested that tumor cells may be derived from tumor stem cells with pluripotent potential in renal tubules based on the immunophenotypes. Multilocular cystic clear cell renal cell carcinoma and renal clear cell carcinoma is similar in immunophenotype and molecular genetics, which suggesting that it may be a special histologic subtype of renal clear cell carcinoma.

RESUMEN

Objective:To explore the relationship between the expression of p57KIP2,cyclin D1,and cyclin E receptors in male breast can-cer(MBC)and its clinical significance.Methods:Data of MBC cases diagnosed in The First Affiliated Hospital of Wenzhou Medical Uni-versity between January 2000 and December 2016 were reviewed.Forty cases of infiltrating ductal carcinoma(IDC)and 20 cases of male ductal carcinoma in situ(DCIS)were selected,and 20 cases of gynecomastia(GYM)were selected as controls.The expression of p57KIP2,cyclin D1,and cyclin E mRNA and protein in the tissue samples obtained from IDC,DCIS,and GYM cases were measured by re-verse transcription polymerase chain reaction and immunohistochemistry,respectively.Results:The expression of p57KIP2mRNA in IDC was 0.18±0.07,which was lower than that in DCIS(0.42±0.05)and GYM(0.75±0.04).The rate of p57KIP2positivity in IDC was 25%(10/40),which was lower than that in DCIS 60%(12/20)and GYM 90%(18/20).There were significant differences in the expression of p57KIP2mRNA and protein among the three groups(P<0.05).The expression of cyclin D1 and cyclin E mRNA in IDC was 0.92±0.12 and 0.96±0.08,which was higher than that in DCIS(0.72±0.06,0.64±0.01)and GYM(0.38±0.03,0.21±0.02),respectively.Cyclin D1 and cy-clin E protein positive rates in IDC were 90%(36/40)and 88%(35/40),which were higher than those in DCIS[80%(16/20),85%(17/20)],and GYM[25%(5/20),20%(4/20)].In IDC tissues,the expression of p57KIP2,cyclin D1,and cyclin E proteins was associated with the clinical stage and histological grade(P<0.05),and the expression of p57KIP2protein was correlated with axillary node metastasis(P<0.05).There was a negative correlation between the expression of p57KIP2and cyclin D1 and between p57KIP2and cyclin E.However,the correlation between cyclin D1 and cyclin E expression was positive(P<0.05).Conclusions:p57KIP2,cyclin D1,and cyclin E may play an im-portant role in the development and progression of MBC.Combined clinicopathological detection of p57KIP2,cyclin D1,and cyclin E can aid future research on MBC.

RESUMEN

Introducción: El cáncer de mama es la primera causa de mortalidad en el mundo y en Guatemala ocupa el segundo lugar en frecuencia. Desde 1991 su clasifcación ha evolucionado a fn de mejorar el pronóstco y su tratamiento basado en la descripción del tpo y grado histológico. El objetvo de este estudio es conocer la aplicación actual de la inmunohistoquímica en cancer de mama. Metodología: Estudio observacional descriptvo retrospectvo, sobre cáncer de mama clasifcado por inmunohistoquímica en 281 pacientes en el Insttuto Guatemalteco de Seguridad Social (IGSS) de enero 2012 a enero del 2017. Resultados: El subtpo Luminal A se presentó en el 31% de los pacientes y su tratamiento fue principalmente hormonal; seguido por el Triple Negatvo en el 26% tratado mayoritariamente con quimioterapia. El HER2 Positvo en el 21%, el subtpo B-like 13% y en menor frecuencia el Luminal B en el 9% de los casos. El subtpo triple negatvo presento mayor recurrencia y mortalidad con mayor elevación del P53 (40%, OR 2.4) y Ki67 (37%, OR 1.4). La edad en la mayoría de pacientes incluidas fueron superiores a los 40 años y los estadios II y III se presentaron con mayor frecuencia. Conclusiones: El estudio de la inmunohistoquímica realizado en los tejidos obtenidos permitó mostrar que el subtpo luminal A fue el más frecuente, recibiendo en la mayoría de los casos tratamiento hormonal. El más agresivo en recurrencia, metástasis, mortalidad y con valor elevado del Gen p53 y Ki67, fue el Triple Negatvo, tratado con quimioterapia.

Background: Breast cancer is the leading cause of death in the world, and in Guatemala it is the second most common cause of death. Since 1991, its classifcaton has evolved in order to improve prognosis and treatment based on the descripton of type and histological grade. The purpose of this study is to learn the current applicaton of immunohistochemistry of breast cancer. Methods: This retrospectve descriptve observatonal study of breast cancer classifed by immunohistochemistry was performed on 281 patents at the Guatemalan Social Security Insttute (IGSS) between January 2012 and January 2017. Results: The subtype Luminal A was present in 31% of the patents and treatment was mainly hormonal; followed by Triple Negatve in 26% of patents treated mainly with chemotherapy. HER2 positve in 21% of patents, subtype B-like in 13% and lower frequency Luminal B in 9% of the patents. The triple negatve subtype presented higher recurrence and mortality with P53 elevaton (40%, OR 2.4) and Ki67 (37%, OR 1.4). Average age in the study was 40 years old and stages II and III were more frequent. Conclusions: The study of immunohistochemistry performed on tssue obtained, demonstrated that Luminal A subtype is the most frequent, in which the majority of patents received hormonal treatment. The most aggressive in recurrence, metastasis, mortality and with high values of gene p53 and Ki67, was the Triple Negatve, which were treated with chemotherapy.

Asunto(s)

RESUMEN

Hypokalemia causes metabolic alkalosis and morphological changes of the kidney. K⁺ balance is regulated not only by ion channels or pump gene, but also by various genes including NF-E2-related factor 2 (Nrf2). Previous study suggested the possibility that Akt and ERK kinase may be involved in Nrf2 transcriptional gene activation. In present study, we investigate the alterations of Akt, p-Akt, ERK, p-ERK protein in both normal kidney and K⁺-deficient diet kidney using Western blot analysis, and immunohistochemisrty. Our western blot data showed that the expression of Akt and p-Akt was increased gradually in K⁺-depleted diet (from 1W-3W) compared to normal group. The expression of ERK and p-ERK was markedly increased in K⁺-depleted diet 2W in comparison with normal group. Based on our immunostaining results, Akt protein immunoreactivity was prominently increased in outer medullary collecting duct, especially in K⁺-depleted diet 2 weeks. The localization of p-Akt proteins in K⁺-depleted groups was not different from normal group, but the immunoreactivity was significantly increased in distal convoluted tubule, macula densa and outer medullary thick ascending limb in K⁺-depleted diet 1 and 2 weeks groups. ERK protein immunoreactivity was prominently increased in outer medullary collecting duct, especially in K⁺-depleted diet 2 and 3 weeks. The localization of p-ERK proteins in K⁺-depleted groups was not different from normal group, but the immunoreactivity was prominently increased in the nucleus of outer medullary collecting duct especially in K⁺-depleted diet 2 weeks. Taken together, we suggest that the expression of p-Akt was gradually increased in K⁺-depleted groups of kidney, but the expression of p-ERK was markedly increased in K⁺-depleted diet 2 week group. Hence, the promotion of AKT and ERK phosphorylation in hypokalemic condition may be involved in the regulation of ion channels, ion transporters and subsequent intracellular signal transduction.

Asunto(s)

RESUMEN

Purpose To explore the biological significance of BCL-6 and ZEB2 in invasion,metastasis and prognosis of breast cancer.Methods The expressions of BCL-6,ZEB2 protein and mRNA were detected respectively in 228 cases of breast cancer and 80 cases of breast benign lesions by immunohistochemical SP two-step staining and situ hybridization.Result The expression levels of BCL-6,ZEB2 protein and mRNA in breast cancer tissues were significantly higher than in breast benign lesions (P ＜ 0.05).The expressions of BCL-6 was positively correlated with tumor size,lymphatic metastasis,histological grade,TNM staging and HER-2 expression (P ＜ 0.05).The expressions of ZEB2 was positively correlated with tumor size,lymphatic metastasis,TNM staging and HER-2 expression (P ＜ 0.05).The overall survival and relapse-free survival of BCL-6 and ZEB2 positive expression were significantly less than the negative expression (P ＜ 0.01).Conclusion The BCL-6 and ZEB2 are closely correlated with the evolution process of breast cancer,which may become important means for monitoring and warning the metastasis,invasion,and prognosis of breast cancer.

RESUMEN

Objective To explore the clinicopathological features and diagnosis of adenoid cystic carci noma of the breast (ACCB).Methods Clinical data of 3 cases of ACCB were collected and followed up to observe the clinical pathological features.Immunohistochemistry was used to determine the immune phenotype.Results All the 3 cases were female,aging from 55 to 72 years old (61 years old as the average).The tumors were found in subareolar region well-circumscribed.ACCB was characterized by the presence of a dual cell population of luminal and basaloid cells arranged in cribriform and tubular-trabecular patterns.On immunohistochemical staining,the myoepithelial cells expressed SMA,CK5/6,P63,CD117 and the glandular epithelium cells were mostly positive for CK18,EMA,CK7,while no expression of ER,PR,HER-2,CD10 was observed.Conclusions ACCB is a rare neoplasm with a triple-negative,basal-like phenotype,but exhibits an indolent clinical behavior.The diagnosis can be worked out by evaluation of clinical characterstics,histological and immunohistochemical features.

RESUMEN

OBJECTIVES: ALK fusion gene is an oncogenic driver in lung cancer with low prevalence, which can be ameliorated by crizotinib. Currently, ALK fusion gene can be diagnosed by fluorescence in situ hybridization (FISH) and immunohistochemistry (IHC), but inconstistnt results between the two methods are encountered regularly. To make the ALK fusion gene screening more efficient and to provide a simple solution to clarify the discrepancy between FISH and IHC results, a sensitive TaqMan-based reverse transcription quantitative polymerase chain reaction (RT-qPCR) assay was established. MATERIALS AND METHODS: The 3-plex TaqMan-based RT-qPCR assay was established and performed on 102 archived formalin-fixed, paraffin-embedded (FFPE) NSCLC samples to detect ALK rearrangement and overexpression. Break-apart FISH and automatic immunohistochemistry based ALK assays were performed side by side using tissue microarray. RESULTS: The RT-qPCR was performed successfully for 80 samples and 10 of them showed positive signals. Three out of the 10 qPCR positive cases were further confirmed by FISH and IHC test. Two others were IHC positive and FISH negative, and expressed full-length ALK transcript. The rest were neither FISH nor IHC positive and their ALK expression level was significantly lower than those FISH or IHC positive cases. CONCLUSION: Our RT-qPCR assay demonstrates that the capability and reliability of ALK detection is comparable to FISH and IHC, but it is more effective at discriminating ALK rearrangement from overexpression. The RT-qPCR assay easily clarifies the discrepancy between FISH and IHC, and can be incorporated into routine ALK screening for lung cancer.

Asunto(s)

RESUMEN

OBJECTIVE: This study aimed to investigate expression level of FOXC2 and its relationship to clinical pathological features of renal cell carcinoma (RCC). METHODS: The expression levels of FOXC2 in RCC tissues and normal renal tissues (62 samples, respectively) were detected by immunohistochemistry and PCR Array. Statistics analyses were done with SPSS to compare the differences between RCC tissues and normal renal tissue, and to explore the relationship between the expression level of FOXC2 and the clinical pathological features of RCC. RESULTS: Expression level of FOXC2 in RCC tissues was significantly higher than in normal renal tissues, and other related cancer genes also highly expressed in RCC tissues. FOXC2 expression was positively associated with clinical stage and pathological grade (P < 0.05), but not significantly related to the gender and age (P > 0.05). CONCLUSION: The expression of FOXC2 in renal cell carcinoma was significantly higher than that in normal renal tissues. It is suggested that FOXC2 might play a crucial role in the occurrence and development of RCC and could be an important prognostic indicator for clinical therapy.

RESUMEN

Brain serotonin 7 (5-HT7) receptors play an important functional role in learning and memory, in regulation of mood and motivation, and for circadian rhythms. Recently, we have studied the modulatory effects of a developmental exposure (under subchronic regimen) in rats with LP-211, a brain-penetrant and selective 5-HT7 receptor agonist. We aimed at further deciphering long-term sequelae into adulthood. LP-211 (0.250 mg/kg i.p., once/day) was administered for 5 days during the adolescent phase (postnatal days 43-45 to 47-49). When adult (postnatal days >70), forebrain areas were obtained for ex vivo immunohistochemistry, whose results prompted us to reconsider the brain connectivity maps presented in our previous study (Canese et al., Psycho-Pharmacol 2015;232:75-89.) Significant elevation in levels of 5-HT7 receptors were evidenced due to adolescent LP-211 exposure, in dorsal striatum (which also shows an increase of dopaminergic D2 auto-receptors) and-unexpectedly-in piriform cortex, with no changes in ventral striatum. We observed that functional connectivity from a seed on the right hippocampus was more extended than reported, also including the piriform cortex. As a whole, the cortical loop rearranged by adolescent LP-211 exposure consisted in a hippocampus receiving connections from piriform cortex and dorsal striatum, the latter both directly and through functional control over the 'extended amygdala'. Such results represent a starting point to explore neurophysiology of 5-HT7 receptors. Further investigation is warranted to develop therapies for sleep disorders, for impaired emotional and motivational regulation, for attentive and executive deficit. The 5-HT7 agonist LP-211 (0.250 mg/kg i.p., once/day) was administered for 5 days during adolescence (postnatal days 43-45 to 47-49) in rats. When adult (postnatal days >70), a significant elevation in levels of 5-HT7 receptors were evidenced in dorsal striatum and-unexpectedly-in piriform cortex.

Asunto(s)

RESUMEN

Epithelioid angiomyolipoma (EAML) is a rare subtype of angiomyolipoma (AML) with potential has malign tendency. UP to now, the biological association between EMAL and typical AML is not well known. In the present study, we reported a case of EMAL arose in AML seven years post AML operation. A 34-year-old man with bilateral kidney AML was operated with an open cytoreductive surgery of both sides. After seven years, the left nephrectomy was performed due to a new neoplasm was found in the left kidney. The pathology diagnosis and inmmunohistochemical staining suggested the new neoplasm was EAML. Finally the patient developed metastases to liver and retroperitoneum and died 19 months post the last operation. After reviewing the history of the patient, we thought that the EAML might be developed from a little amount of EMAL accompany with AML in the small lesson that was missed by the CT scan. The results revealed that a carefully screening for the epithelioid cells in the typical AML specimen should be made to avoid missing the important EAML.