Loss of Nuclear ARID-1A Expressions Is Associated with Hormone Receptor Status in Breast Cancers.

OBJECTIVE: Breast cancer is the most common cancer among women worldwide. Adenine thymine-rich interactive domain 1A (ARIDIA) is a tumor suppressor gene involved in chromatin remodeling and it encodes the ARIDIA protein. Recent studies have shown the loss of ARIDIA protein expression in different carcinomas may have a prognostic significance. In the present study, we aimed to evaluate the interactions between ARIDIA loss and molecular subtypes of breast carcinomas. MATERIALS AND METHODS: ARIDIA expressions were studied in 292 formalin- fixed, paraffin- embedded breast carcinoma specimens and its association with different pathological and clinical parameters was evaluated. RESULTS: Loss of ARIDIA expression was detected in 123 cases. There was no statistically significant association between ARID-1A expression and molecular subtype of breast carcinomas (p=0.110) or HER2 amplification (p=0.909). Contrarily, there was a significant association between ARIDIA expression and presence of estrogen (p=0.047) or progesterone receptors (p=0.023). Besides a statistically significant relationship was found between loss of ARID1A, and the presence of both in situ component (p=0.016) and lymph node metastasis (p=0.001). CONCLUSION: In this study, we have demonstrated that loss of ARID1A expression positively correlates with hormone receptor status as well as tumor aggressiveness.

Evaluation of human epididymal secretory protein 4 expression according to the molecular subtypes (luminal A, luminal B, human epidermal growth factor receptor 2-positive, triple-negative) of breast cancer.

BACKGROUND/AIMS: Human epididymal secretory protein 4 (HE4) is originally described as an epididymis-specific protein but more recently suggested to be a putative serum tumor marker for some tumors, including breast carcinomas. In this study, we aimed to investigate the interactions between HE4 expression and molecular subtypes of breast carcinomas. METHODS: HE4 expressions were studied in 242 formalin-fixed, paraffin-embedded breast carcinoma specimens and their association with different pathological and clinical parameters was evaluated. RESULTS: Immunohistochemical (IHC) staining for HE4 was negative in 3 (1.2%) cases, weakly positive (1+) in 7 (2.9%) cases, moderately positive (2+) in 58 (24.0%) cases, and strongly positive (3+) in 174 (71.9%) cases. A correlation between IHC HE4 staining grade and molecular groups was detected (P = 0.005). Furthermore, it was found that HE4 expression was strongly associated with histological tumor grade, c-erbB2 expression, and positive fluorescence in situ hybridization test results that detect human epidermal growth factor receptor 2 (HER2)/neu amplification (P = 0.022, P = 0.014, and P = 0.011). CONCLUSION: This study showed that HE4 expression is associated with HER2/neu amplification in breast cancers. These results may be commented as HE4 expression rises in patients with HER2/neu amplification. As is known, HER2/neu amplification is a poor diagnostic factor in breast cancer and HE4 expression is possibly associated with poor prognosis.

Paniculitis epiploica aislada en un niño con dolor abdominal: A propósito de un caso / Isolated omental panniculitis in a child with abdominal pain: Case report

La paniculitis epiploica aislada es una entidad rara, mayormente observada en los adultos. Se presenta con inflamación del tejido adiposo del epiplón. Los síntomas varían entre manifestaciones locales (por ejemplo, dolor a la palpación abdominal o una masa palpable) y sistémicas, que incluyen dolor abdominal, dolor de espalda, fiebre, descenso de peso y trastornos intestinales. Presentamos este caso como una primera acción de sensibilización respecto de un caso de paniculitis epiploica en un niño, afección que debe tenerse en cuenta en el diagnóstico diferencial del íleo a fin de evitar cirugías innecesarias.

Isolated omental panniculitis is a rare entity mostly seen in adults. It presents with the inflammation of the fatty tissue of the omentum. The symptoms may vary from local (e.g. abdominal tenderness or palpable mass) to systemic manifestations including abdominal pain, back pain, fever, weight loss and bowel disturbances. We presented this case as a first awareness of omental panniculitis in a child which must be kept in mind at the differential diagnosis of ileus so that unnecessary surgeries might be avoided.

Isolated omental panniculitis in a child with abdominal pain: case report. / Paniculitis epiploica aislada en un niño con dolor abdominal: a propósito de un caso.

Isolated omental panniculitis is a rare entity mostly seen in adults. It presents with the inflammation of the fatty tissue of the omentum. The symptoms may vary from local (e.g. abdominal tenderness or palpable mass) to systemic manifestations including abdominal pain, back pain, fever, weight loss and bowel disturbances. We presented this case as a first awareness of omental panniculitis in a child which must be kept in mind at the differential diagnosis of ileus so that unnecessary surgeries might be avoided.

La paniculitis epiploica aislada es una entidad rara, mayormente observada en los adultos. Se presenta con inflamación del tejido adiposo del epiplón. Los síntomas varían entre manifestaciones locales (por ejemplo, dolor a la palpación abdominal o una masa palpable) y sistémicas, que incluyen dolor abdominal, dolor de espalda, fiebre, descenso de peso y trastornos intestinales. Presentamos este caso como una primera acción de sensibilización respecto de un caso de paniculitis epiploica en un niño, afección que debe tenerse en cuenta en el diagnóstico diferencial del íleo a fin de evitar cirugías innecesarias.

The evaluation of the caveolin-1 and AT-rich interactive domain 1 alpha expressions in uterine smooth muscle tumors.

OBJECTIVES: This retrospective study was designed to evaluate the importance of tissue expressions of caveolin-1 (Cav-1) and AT-rich interactive domain 1 alpha (ARID-1A) which are known as signal regulator and tumor suppressor in differential diagnosis of uterine smooth muscle tumors (SMTs). MATERIALS AND METHODS: Thirty patients recently diagnosed as uterine SMTs at the Tepecik Training and Research Hospital were identified using pathology databases. Immunohistochemical stains for Cav-1 and ARID-1A were performed. RESULTS: In this series, there were 10 leiomyosarcomas (LMSs), 10 uterine smooth muscle tumors of uncertain malignant potentials (STUMPs), and 10 leiomyomas (LMs). Cav-1 expression located cytoplasmic or perivascular area. Cytoplasmic Cav-1 expression was determined in 5 LMSs and 2 STUMPs while perivascular Cav-1 expression was determined in 9 LMSs and 2 STUMPs. Statistically, it was determined that if the tumor becomes malignant and more invasive, it gains the perivascular Cav-1 expression (P = 0.029). On the other hand, the mean nuclear staining rate for ARID-1A in LMSs (63 ± 23.4%) was higher than both STUMPs (60 ± 18.5%) and LMs (34.5 ± 16.5%). Statistically, it was determined that the expression of ARID-1A was significantly downregulated in LMs when compared with STUMPs and LMSs (P = 0.004). CONCLUSIONS: Our findings were demonstrated that perivascular Cav-1 expression was seen to be a marker for malignancy of uterine SMTs. Similarly, we found to link of ARID-1A expression and the aggressiveness of SMTs. Therefore, it may be suggested that Cav-1 and ARID-1A may act as predictive biomarkers in uterine SMTs.

Differences in the ARID-1 alpha expressions in squamous and adenosquamous carcinomas of uterine cervix.

AT-rich interactive domain 1A (ARID1A) is a tumor suppressor gene involved in chromatin remodeling which encodes ARID1A (BAF250a) protein. Recent studies have shown the loss of ARID1A expression in several types of tumors. This retrospective study was designed to evaluate the differences in tissue expressions of ARID1A in a spectrum of cervical neoplasms. Cervical intraepithelial neoplasms, invasive squamous or adenosquamous carcinomas were identified in 100 patients recently diagnosed as cervical neoplasms based on pathology databases. In this series, there were 29 low- and 29 high-grade cervical intraepithelial neoplasms, 27 squamous cell carcinomas, and 15 adenosquamous carcinomas. Mean age of the patients was 47.8 ± 13 years (20-80 years). It was determined that the expression of ARID1A was statistically significantly down-regulated in adenosquamous carcinomas when compared with non-invasive or invasive squamous cell carcinomas (p = 0.015). Lower levels of the ARID1A expression were detected in cases with adenosquamous carcinomas (60%), low- or high-grade squamous intraepithelial lesion (SIL) (31%), and squamous cell carcinomas (18.5%). Our findings have demonstrated the presence of a correlation between ARID1A expression and adenomatous differentiation of uterine squamous cell carcinomas. Therefore, ARID1A gene may suggestively have a role in the pathogenesis of cervical adenosquamous carcinomas.