Mullerian adenosarcoma with sarcomatous overgrowth of the cervix - Unusual large polypoid mass

WOS: 000253451900006PubMed: 17578809Mullerian adenosarcoma ( MS) is a rare neoplasm of uterine cervix composed of benign epithelial and malignant stromal components. An aggressive variant of adenosarcoma, mullerian adenosarcoma with sarcomatous overgrowth (MASO) is extremely rare. The difference between MS and MASO is the pure high grade sarcoma features in MASO. In this report we present a MASO case, derived from uterine cervix of a 60 year-old-female patient presenting as a cervical polypoid mass, to our knowledge the second case of the English literature. In spite of sarcomatous overgrowth, high mitotic activity and huge tumor size of 12,5 cms, it displayed no myometrial invasion, vascular invasion and heterologous elements. The patient has been clinically free of disease for 14 months of follow up after total abdominal hysterectomy and bilateral salpingo-oopherectomy. The difficulties in diagnosis and treatment of this entity will be evaluated in this report

Age-related changes in the rat hippocampus

Dogan Ekici, Asiye Isin/0000-0003-4062-9519; Ozkan, Ferda/0000-0002-9919-0582WOS: 000255339000014PubMed: 18342510The human brain is uniquely powerful in its cognitive abilities, yet the hippocampal and neocortical circuits that mediate these complex functions are highly vulnerable during aging. In this study, we analyzed age-related changes in the rat hippocampus by studying newborn (1 month), middle-aged (12 months), and older (24 months) male and female Sprague-Dawley rats. We evaluated neuronal dystrophy, neuron scattering, and granulovacuolar degeneration in the hippocampal area using light microscopy, according to age and gender. We detected significant neuronal dystrophy in the CA1, CA2, and CA3 areas in male rats, and in the CA1, CA3, and CA4 areas in female rats. Degenerative changes, indicated by neuron scattering, were observed in the CA1, CA2, and CA3 areas of male and the CA2 and CA4 areas of female rats. Changes in all areas of the hippocampus were observed with increasing age; these changes included neuronal dystrophy and neuron scattering and did not differ significantly between male and female rats. (C) 2007 Elsevier Ltd. All rights reserved

Specificity and sensitivity of differentiation antigens in superficial soft tissue tumors: comparison of SMA, calponin, H-caldesmon, C-Kit, PLAP and HPL

WOS: 000281778100003PubMed: 21033622We examined the expression pattern of smooth muscle actin (SMA), h-caldesmon (HCD), calponin (CALF), placental alkaline phosphatase (PLAP) and human placental lactogen (HPL) in benign and malignant spindle cell superficial soft tissue tumors in order to determine the role of these markers in differential diagnosis. Archival tissue from 38 patients with superficial smooth muscle cell and so-called fibrohistiocytic tumors (8 benign fibrous histiocytomas (BFHs), 6 dermatofibrosarcoma protuberans (DFPT), 9 malignant fibrous histiocytomas (MFHs), 9 leiomyomas (LMs) and 6 leiomyosarcomas (LMSs)) were immunostained with antibodies against SMA, HCD, CALF, PLAP and HPL. smooth muscle cell (SMC) tumors showed significantly high immunopositivity for HCD than that of so-called fibrohistiocytic tumors (p is less than or equal to 0.05) but 1/3 of DFPT and MFH cases and half of BFH cases also showed HCD immunopositivity; thus, this difference is debatable and not highly discriminative as expected. All tumor groups showed 100% immunopositivity for CALP. SMC tumors displayed significantly stronger and more widespread immunostaining pattern for PLAP than so-called fibrohistiocytic tumors (p<0.05). Superficial soft tissue tumors did not express c-kit. In conclusion, HCD and FLAP can be used as ancillary immunomarkers in differential diagnosis of SMC tumors (Tab. 2, Fig. 7, Ref. 37). Full Text in free PDF www.bmj.sk

Specificity and sensitivity of differentiation antigens in superficial soft tissue tumors: comparison of SMA, calponin, H-caldesmon, C-Kit, PLAP and HPL

WOS: 000281778100003PubMed: 21033622We examined the expression pattern of smooth muscle actin (SMA), h-caldesmon (HCD), calponin (CALF), placental alkaline phosphatase (PLAP) and human placental lactogen (HPL) in benign and malignant spindle cell superficial soft tissue tumors in order to determine the role of these markers in differential diagnosis. Archival tissue from 38 patients with superficial smooth muscle cell and so-called fibrohistiocytic tumors (8 benign fibrous histiocytomas (BFHs), 6 dermatofibrosarcoma protuberans (DFPT), 9 malignant fibrous histiocytomas (MFHs), 9 leiomyomas (LMs) and 6 leiomyosarcomas (LMSs)) were immunostained with antibodies against SMA, HCD, CALF, PLAP and HPL. smooth muscle cell (SMC) tumors showed significantly high immunopositivity for HCD than that of so-called fibrohistiocytic tumors (p is less than or equal to 0.05) but 1/3 of DFPT and MFH cases and half of BFH cases also showed HCD immunopositivity; thus, this difference is debatable and not highly discriminative as expected. All tumor groups showed 100% immunopositivity for CALP. SMC tumors displayed significantly stronger and more widespread immunostaining pattern for PLAP than so-called fibrohistiocytic tumors (p<0.05). Superficial soft tissue tumors did not express c-kit. In conclusion, HCD and FLAP can be used as ancillary immunomarkers in differential diagnosis of SMC tumors (Tab. 2, Fig. 7, Ref. 37). Full Text in free PDF www.bmj.sk

CENTRAL NERVOUS SYSTEM COMPLICATIONS OF DIABETES IN STREPTOZOTOCIN-INDUCED DIABETIC RATS: A HISTOPATHOLOGICAL AND IMMUNOHISTOCHEMICAL EXAMINATION

WOS: 000268663600008PubMed: 19922346Diabetes mellitus is a common, potentially serious metabolic disorder. Over the long term, diabetes leads to serious consequences in a number of tissues, especially those that are insulin insensitive (retina, neurons, kidneys). It also causes a variety of functional and structural disorders in the central and peripheral nervous systems. We investigated whether neurodegenerative changes were observable in the hippocampus, cortex, and cerebellum after 4 weeks of streptozotocin (STZ)-induced diabetes in rats and the effect(s) of melatonin. Male Wistar rats (n = 32) were divided into four groups (n = 8 each): untreated controls, melatonin-treated controls, untreated diabetics, and melatonin-treated diabetics. Experimental diabetes was induced by a single dose of STZ (60 mg/kg, intraperitoneal (ip)). For 3 days before the administration of STZ, melatonin (200 mu g/kg/day, ip) was injected and continued for 4 weeks. Sections of hippocampus, cortex, and cerebellum were stained with hematoxylin and eosin and examined using light microscopy. In addition, brain tissues were examined immunohistochemically for the expression of glial and neuronal markers, including glial fibrillary acidic protein (GFAP), neuron-specific enolase (NSE), and heat shock protein-70 (HSP-70). No neurodegenerative changes were observed in the hippocampus, cortex, or cerebellum of the untreated diabetic group after 4 weeks compared with the other groups. We did not observe any change in GFAP, NSE, or HSP-70 immunostaining in the brain tissues of STZ-induced diabetic rats. In summary, after 4 weeks of STZ-induced diabetes in rats, no degenerative or immunohistochemical changes were detected in the hippocampus, cortex, or cerebellum

Mucosal Malignant Melanoma of Nasal Cavity Recurring a Year After Radiotherapy

Objective: Sinonasal mucosal malignant melanoma is a rare entity. In this report we present a nasal mucosal malignant melanoma case with its histopathological and clinical features. Case Report: An 88-year-old female patient presented with epistaxis a month ago. Examination revealed a polypoid mass lesion of right nasal cavity originating from the middle concha. Her medical history revealed that she had been found to have a mass lesion in the right nasal cavity 15 months ago. She then underwent a punch biopsy from that lesion. A definitive histopathological diagnosis was not made but it was declared that the lesion had been a malignant epithelial tumor. The patient then had radiotherapy and the lesion showed complete regression. One year after completion of radiotherapy, the lesion recurred. Her last PET-CT showed multiple metastatic foci. Endoscopic excisional biopsy was performed for her recurrent lesion. Fragmented tumoral tissues were measured as 3,6x3x0,5 cm. Macroscopically the tumor was brownish in color. Histopathologically the tumor consisted of spindled and epitheloid cells. Immunohistochemically the tumor cells displayed positivity for S-100, HMB-45 and Melan-A. Findings were consistent with malignant melanoma. Discussion: Mucosal malignant melanomas have a poor prognosis despite chemotherapy and radiotherapy. Five-year survival for sinonasal melanoma is reported to be lower than 35%. Sinonasal melanomas show a high recurrence rate. The immunohistochemical markers showing high specificity for malignant melanoma such as S-100, HMB-45 and Melan-A are used in order to reach a correct diagnosis. In our case the tumor showed recurrence and multiple metastases 1 year after completion of radiotherapy. For this recurrent tumor, chemotherapy and radiotherapy have been planned

A protective effect of pyrrolidine dithiocarbamate on monocrotaline induced pulmonary hypertension

Europe Meeting 2009 of the Society-for-Free-Radicals-Research -- AUG 26-29, 2009 -- Rome, ITALYSilan, Coskun/0000-0002-8352-6571; silan, coskun/0000-0002-8352-6571WOS: 000267973800247…Soc Free Rad Re

Pyrrolidine dithiocarbamate attenuates the development of monocrotaline-induced pulmonary arterial hypertension

Silan, Coskun/0000-0002-8352-6571; silan, coskun/0000-0002-8352-6571WOS: 000321090000006PubMed: 23582365We aimed to demonstrate the potential protective effects of pyrrolidine dithiocarbamate (PDTC) on monocrotaline (MCT)-induced pulmonary arterial hypertension (PAH). Adult male rats were randomly assigned to 4 groups: control group, MCT-treated rats only, MCT-injected rats treated with PDTC, and PDTC-treated rats only. Blood and tissue samples were collected after the sacrifice. Levels of malondialdehyde (MDA) were measured by using the thiobarbituric acid method. Total antioxidant status (TAS) was determined using a commercially available ImAnOx kit. A histopathological evaluation was accomplished by scoring the degree of severity. Endothelial damage of the main pulmonary artery was evaluated by immunohistochemical labeling of endothelial cells using anti-rat endothelial cell antigen 1 (RECA-1) antibody. MCT-induced right ventricular hypertrophy (RVH) was reduced significantly in the MCT + PDTC-treated group. MDA levels were significantly lowered in the MCT + PDTC-treated group. TAS was significantly higher in the MCT + PDTC-treated group when compared with the rats with PAH. Histopathological examination demonstrated that PDTC treatment reduced the development of inflammation, hemorrhage and congestion, and collagen deposition. In conclusion, PDTC attenuated PAH and protected pulmonary endothelium in rats administered MCT. These findings suggest that PDTC treatment may provide a new effective therapeutic approach in the treatment of PAH. (C) 2013 Elsevier GmbH. All rights reserved