Investigation of the expression levels of CDH1, FHIT, PTEN, and TTPAL genes in colorectal tumors.

BACKGROUND: The main aim of the study is to assess expression levels of CDH1, FHIT, PTEN, and TTPAL genes in tumors and peripheral bloods of colorectal cancer patients in staged I-IV. METHODS: Gene expression analysis of related genes were performed for tumor tissues and peripheral blood samples of 51 colorectal cancer patients and colon tissues and blood samples of 5 healthy individuals. The real-time-PCR reaction method was used for the analysis. RESULTS: Alteration of mRNA levels of related genes in tumor tissues of colorectal cancer cases was determined compared to control tissues. GAPDH and TBP were used for the normalization. While the mRNA levels of CDH1 decreased, the mRNA level of the FHIT and TTPAL genes increased in the tumor tissues. There was no PTEN gene expression difference in tumor tissues (total). The mRNA levels of the CDH1 and PTEN genes were increased while the mRNA levels of FHIT and TTPAL genes decreased in the blood (total). T he mRNA levels of the CDH1 gene decreased at each stage (I-IV) in the tumor tissues and increased at each stage (I-IV) in the blood. T he PTEN gene mRNA levels at each stage were controversial. The mRNA levels of the FHIT gene increased at stage I-II-III, decreased at stage IV in the tissues and decreased at each stage (I-IV) in the blood. The mRNA levels of TTPAL gene increased at each stage (I-IV) in the tissues and decreased at each stage (I-IV) in the blood.

Investigation of the expression levels of CPEB4, APC, TRIP13, EIF2S3, EIF4A1, IFNg, PIK3CA and CTNNB1 genes in different stage colorectal tumors

Background/aim: The aim of the study is to assess expression levels of CPEB4, APC, TRIP13, EIF2S3, EIF4A1, IFNg, PIK3CA and CTNNB1 genes in tumors and peripheral bloods of colorectal cancer patients in stages I­IV. Materials and methods: The mRNA levels of the genes were determined in tumor tissues and peripheral blood samples of 45 colorectal cancer patients and colon tissues and peripheral blood samples of 5 healthy individuals. Real-time polymerase chain reaction method was used for the analysis. Results: The mRNA level of the CPEB4 gene was significantly downregulated in colorectal tumor tissues and was upregulated in the peripheral blood of colorectal cancer patients relative to the controls (P < 0.05). APC mRNA level was significantly downregulated in tissues and upregulated in the peripheral blood (P < 0.05). TRIP13 mRNA level was upregulated in peripheral blood and also significantly upregulated in colorectal tumor tissues (P < 0.05). EIF2S3 mRNA level was upregulated in tissues and also significantly upregulated in peripheral blood (P < 0.05). PIK3CA mRNA level was downregulated in tissues and upregulated in peripheral blood. EIF4A1 mRNA level was downregulated in tissues and significantly upregulated in peripheral blood (P < 0.05). CTNNB1 mRNA level was downregulated in tissues and upregulated in peripheral blood. IFNg mRNA level was upregulated in both colorectal cancer tumor tissues and peripheral blood. Conclusion: TRIP13 and CPEB4 mRNA up regulation in the peripheral blood of patients with colorectal cancer may be a potential target for early stage diagnosis. In addition to this evaluation, although there is not much study on EIF2S3 and EIF4A1 mRNA changes in cases with colorectal cancer, upregulation in peripheral blood draws attention in our study. These data will shed light on the new comprehensive studies.

Recurrent uterine leiomyosarcoma: an atypical location.

Leiomyosarcoma (LMS) is a malignant tumor of smooth muscle cells and comprises 5-24% of all soft tissue sarcomas. Although the most frequent symptoms are vaginal bleeding and abdominal pain, the symptoms are generally associated with dimensions and localization of the tumor. The current study presents a case of uterine leiomyosarcoma that metastasized to the rectus abdominis muscle, which has only been previously reported in two cases in the literature. A 57-year-old multigravid patient presented with a palpable mass in her abdomen. The patient's past medical history revealed a hysterectomy performed in another center seven years ago with a postoperative histopathological report of leiomyosarcoma. A myomatous mass was detected, which was localized at the distal part of the right rectus muscle during operation. The mass was completely excised. The case was diagnosed as leiomyosarcoma according to the histopathological findings. Any mass in a skeletal muscle should be suspected to be metastasis in patients with a prior history of aggressive gynecologic malignancy such as LMS.

Neuroprotective effect of alpha-lipoic acid and methylprednisolone on the spinal cord ischemia/reperfusion injury in rabbits.

OBJECTIVE: The aim of this study is to investigate the putative neuroprotective effect of alpha-lipoic acid (LA) on spinal ischemia/reperfusion (I/R) injury in rabbits. METHODS: Thirty-five adult female New Zeland rabbits, weighing 2,000-3,500 g (mean: 2,800), were divided randomly into five groups of seven rabbits each (n: 7) as Group 1: sham, only laparotomy; Group 2 (I/R): I/R; Group 3 (LA): I/R and 100 mg/kg of LA; Group 4 (MP): I/R and 30 mg/kg of methylprednisolone (MP); and Group 5 (LA + MP): I/R and 100 mg/kg of LA plus 30 mg/kg of MP. RESULTS: A statically significant effect of LA, MP, and LA plus MP on lowering malondialdehyde levels both in the blood and in the cerebrospinal fluid (CSF) has been observed. Nitric oxide is significantly decreased in the blood and spinal cord tissues, and also in the CSF but it is not significant. Superoxide dismutase, catalase, and glutathione levels were increased by LA administration. CONCLUSION: LA exhibits antioxidant efficacy in spinal cord I/R injury, but it cannot decrease the oxidative stress. The histopathological result of the present study also demonstrated that LA has neuroprotective effect in spinal cord injury.

A case of septal panniculitis secondary to interferon treatment.

The most common side effects of interferon-beta therapy following subcutaneous administration include pain, inflammation and induration at the injection site, which occur in approximately 20-60% of patients. Besides, transient injection-site erythema is frequently seen in beta-interferon therapy. Less frequent reactions at injection sites include vascular thrombosis, mucinosis, dermal and systemic sclerosis, necrosis, and ulceration. Here, we report a 44-year-old case diagnosed with multiple sclerosis, who developed pain and swelling following interferon-beta 1a treatment after an improperly administered intramuscular injection; and with this case report, we would like to draw attention to septal panniculitis, a serious drug complication, that develops following interferon-beta 1a treatment after an improperly administered intramuscular injection.

Erythroderma secondary to gliclazide: a case report.

Erythroderma is generalized exfoliative dermatitis, which involves more than 90% of the patient's skin. The most common cause of erythroderma is exacerbation of an underlying skin disease, malignancies or drug reaction. There is a long list of drugs responsible for erythroderma such as antiepileptics, sulfonamides, antibiotics, and angiotensin converting enzyme (ACE) inhibitors. We herein report a case of erythroderma due to gliclazide usage which is also proved by histopathologic examination and patch test. We could not find any case report of gliclazide, an oral antidiabetic, as a cause erythroderma in the literature.

Cystic lymphangiomatosis with severe intra-abdominal bleeding in a newborn: case report.

We report the case of a newborn girl with intestinal cystic lymphangiomatosis who presented with abdominal distension and intra-abdominal bleeding following a prenatal ultrasound diagnosis of intestinal anomaly. Postnatal abdominal ultrasound revealed disseminated submucosal and intramural cystic dilatations of various sizes in the bowel and intestinal lymphangiomatosis was diagnosed. The presence of severe bleeding diathesis and widespread disease led to conservative treatment. The patient died on postnatal day 7 and postmortem examination confirmed cystic lymphangiomatosis. Detection of intestinal hyperechogenicity and/or dilatation in prenatal ultrasonography and the persistence of these findings during pregnancy are suggestive for pathologies such as meconium ileus, meconium peritonitis, and intestinal atresia. Although rare, intestinal lymphangiomatosis should be kept in mind in patients whose prenatal sonographic findings persist until birth.

Methylation analysis of histone 4-related gene HIST1H4F and its effect on gene expression in bladder cancer.

Recently, aberrant DNA methylation of the HIST1H4F gene (encodes Histone 4 protein) has been shown in many types of cancer, which may serve as a promising biomarker for early cancer diagnosis. However, the correlation between DNA methylation of the HIST1H4F gene and its role in gene expression is unclear in bladder cancer. Therefore, the first objective of this study is to explore the DNA methylation pattern of the HIST1H4F gene and then further elucidate its effects on HIST1H4F mRNA expression in bladder cancer. To this end, the methylation pattern of the HIST1H4F gene was analyzed by pyrosequencing and the effects of the methylation profiles of this gene on HIST1H4F mRNA expression in bladder cancer were examined by qRT-PCR. Sequencing analysis revealed significantly higher methylation frequencies of the HIST1H4F gene in bladder tumor samples compared to normal samples (p < 0,0001). However, when we evaluated the correlations between hypermethylation of HIST1H4F and the clinicopathological parameters (tumor stage, tumor grade, lymph node metastasis, muscle-invasion), no significant difference was found between the groups (p > 0.05). In addition, we examined the role of hypermethylation of the HIST1H4F gene on HIST1H4F mRNA expression. We found that hypermethylation of HIST1H4F in the exon have no effect HIST1H4F mRNA expression in bladder cancer (p > 0.05). We also confirmed our finding in cultured T24 cell line which HIST1H4F gene is hypermethylated. Our results suggest that hypermethylation of the HIST1H4F seems to be a promising early diagnostic biomarker in bladder cancer patients. However, further studies are needed to determine the role of HIST1H4F hypermethylation in tumorigenesis.

A Role for Mast Cell-Mediated Antibodies in the Formation of Cholesteatoma and Cholesteatoma-Induced Bone Erosion.

The study aimed to evaluate the effects and relationships between mast cells in the matrix, mast cell enzymes tryptase and chymase, epithelial proliferation, microvascular density, and bone destruction in cholesteatoma. Thirty-five biopsies diagnosed with cholesteatoma and seven healthy skin tissues taken from the retro-auricular region for control were evaluated. Immunohistochemical studies were performed with CD117, CD34, Ki-67, chymase, and tryptase antibodies, in a single session for all cases and the control group. The relationship between erosion size and antibody load was determined. The mean cholesteatoma epithelium Ki-67 was higher than the control group (p < 0.001). CD117-positive mast cells, chymase-positive mast cells, tryptase-positive mast cells, and microvessel density were significantly higher in the cholesteatoma matrix compared to the control group (p < 0.002, p < 0.001, p < 0.005). In the group with bone erosion scores of two and above, immunohistochemical markers tended to be higher. A positive correlation was found between CD117 and chymase, tryptase, and microvessel density; between tryptase, chymase, and microvessel density; and between chymase and microvessel density. CD117-positive mast cells and chymase-positive mast cells stimulate angiogenesis, increase the epithelium's proliferative capacity in the cholesteatoma matrix, and form cholesteatoma. The increased proliferation of cholesteatoma epithelium and increased vascular density in the matrix exacerbate bone erosion.

Investigation of the IL7Rα Gene Polymorphism rs6897932 and the Expression Levels of the CDH1, TTPAL, and FHIT Genes in Patients with Breast Cancer.

OBJECTIVE: The aim of this study was to determine the expression levels of CDH1, FHIT, and TTPAL genes and to determine the genotype and allele frequencies of the IL7Rα gene polymorphism rs6897932 in patients with breast cancer. METHODS: The expression levels of genes and the distribution of the IL7Rα gene polymorphism rs6897932 were analyzed by real-time polymerase chain reaction. RESULTS: No differences in genotype ratios or allele frequencies were observed between the 2 groups for the IL7Rα gene polymorphism rs6897932. The frequency of the IL7Rα rs6897932 T risk allele was found to be similar between breast cancer patients and controls. CDH1 messenger RNA (mRNA) levels decreased (0.714-fold and 0.834-fold, respectively), and TTPAL mRNA levels increased (2.675-fold [P < .05] and 1.169-fold, respectively) in tumor tissues and peripheral blood samples. FHIT mRNA levels decreased (0.559-fold) in tumor tissue samples and increased (2.21-fold) in peripheral blood samples. CONCLUSION: Our results are compatible with those reported in the literature. It can be suggested that the upregulation observed in the TTPAL gene might be a marker for breast cancer. The downregulation of CDH1 and FHIT gene expression has been validated in our study. An increase in the copy numbers of FHIT mRNA in blood samples and a decrease in the tumor samples can also be considered an abnormal condition.

Sclerosing polycystic adenosis of the parotid gland presenting with a Warthin tumor.

Sclerosing polycystic adenosis (SPA) frequently presents as an isolated process, however it may involve adjacent benign salivary gland neoplasia. In this article, we present a 77-year-old female case with a 10-year history of a slow-growing mass of the left parotid gland of SPA presenting with a Warthin tumor. The patient underwent left superficial parotidectomy. The histopathological examination revealed SPA and multifocal Warthin tumor.

Chondroid syringoma: a case report.

BACKGROUND: Chondroid syringoma is a benign skin adnexal tumor. The reported incidence of chondroid syringoma among primary skin tumors is low and has been reported at 0.01-0.098%. CASE: A 57-year-old woman presented with a 10-year history of a slowly growing lump on her philtrum. Fine needle aspiration cytology was performed. The smears showed cohesive groups of round cells embedded in a chondromyxoid ground substance. A diagnosis of benign appendageal tumor of the skin was made. Surgical excision of tumor was done. Histopathologic examination was consistent with chondroid syringoma. CONCLUSION: Chondroid syringoma should be included in the differential diagnosis of a slowly growing nodule on the head or neck. The diagnosis can be confirmed by means of fine needle aspiration cytology. The treatment of choice is local excision.

Oncocytic lipoadenoma of the parotid gland: a case report with fine needle aspiration cytology findings.

Oncocytic lipoadenoma of the salivary gland is a rarely encountered tumor. A 56-year-old man presented with a two-year history of a slow-growing mass of the left parotid gland. Computed tomography scan with contrast showed a 7x6.5x6 cm well-circumscribed solid parotid mass of the left superficial and deep lobe. Fine-needle aspiration yielded oncocytic cells exclusively, suggesting Warthin tumor or an oncocytoma. Left total parotidectomy was performed. A diagnosis of oncocytic lipoadenoma was made. At six-month follow-up no evidence of recurrence has been noted. Oncocytic lipoadenoma should be considered in the differential diagnosis of oncocytic proliferations and oncocytic tumors in the parotid gland.

Expression of cyclooxygenase-2 and matrix metalloproteinase-2 in adenomyosis and endometrial polyps and its correlation with angiogenesis.

This study investigates the expression of cyclooxgenase (COX)-2 and matrix metalloproteinase (MMP)-2 in patients with adenomyosis or endometrial polyps and their possible relation to microvascular density in these lesions. The subjects were 25 patients with adenomyosis, 30 patients with endometrial polyps, and 20 female controls. The expression of COX-2, MMP-2, and CD34 was studied immunohistochemically. Microvesseldensity (MVD) was calculated by the counting of CD34-positive vascular endothelial cells. The quantity and intensity of COX-2 expression in endometrium did not vary during the menstrual cycle in the control group and in patients with endometrial polyps. In patients with adenomyosis, it was higher in the secretory phase. MMP-2 expression in stromal cells in adenomyotic foci and endometrial polyps were higher than in normal endometrium. In the proliferative phase, MVD in adenomyosis foci was higher than in normal endometrium and endometrial polyps. In the secretory phase, MVD in adenomyotic foci and endometrial polyps was higher than in normal endometrium. Overexpression of stromal MMP-2 may play a role in the development of adenomyosis and endometrial polyps. Aberrant COX-2 expression in eutopic endometrium during the luteal phase may be associated with the pathogenesis of adenomyosis; however, expression of COX-2 does not seem to play a role in the development of endometrial polyps. MVD was high in both lesions, but there was no significant correlation between MVD and the expression of MMP-2 or COX-2. Mechanisms other than COX-2 and MMP-2 may contribute to the promotion of angiogenesis in these lesions.

What should be the ideal time for ischemic preconditioning in a laparoscopic rat model?

BACKGROUND: Pneumoperitoneum (Pp) induces an ischemia and reperfusion (I/R) injury as a result of released oxidative stress markers. Ischemic preconditioning (IP) is one of the used methods to reduce the harmful effects of Pp, which is a mechanism for reducing organ I/R injury by a brief period of organ ischemia. The aim of this study was to investigate the ideal time for IP in the laparoscopic model. METHODS: Thirty-two rats were assigned into four groups: group 1 (control, n = 8) was subjected to a sham operation. Group 2 (5-minutes IP, n = 8) was subjected to 5 minutes of Pp with 15 mm Hg of pressure followed immediately by 5 minutes of deflation, and after that, 60 minutes of Pp with 15 mm Hg, followed by 60 minutes of deflation. Group 3 (10-minutes IP, n = 8) was subjected to 10 minutes of Pp and 10 minutes of deflation. Group 4 (Pp only, n = 8) was subjected to 60 minutes of Pp with 15 mm Hg of pressure, followed by 60 minutes of deflation. At the end of the experiment, plasma malondialdehyde (MDA) values, the oxidative stress marker, and plasma-reduced glutathione (GSH) levels, the marker showing antioxidant activity, were determined. RESULTS: Highest plasma MDA values were in group 4 (Pp only), followed by groups 2 and 3 and group 1 (P = 0.181). In addition, IP groups had almost the same values for MDA. Plasma GSH levels in the control group were significantly higher than those in the IP groups and the Pp-only group (P < 0.001). Similarly, as in MDA levels, no difference was found between plasma GSH levels of the IP 5-minutes and IP 10-minutes groups. CONCLUSIONS: Five minutes of the IP model may be as reliable as 10 minutes of the IP model. In that case, 5 minutes of IP can be more suitable in reducing I/R injury in laparoscopy.

Follicular dendritic cell sarcoma: a case report.

BACKGROUND: Follicular dendritic cell (FDC) sarcoma is a neoplastic proliferation of spindled to ovoid cells showing morphologic and phenotypic features of follicular dendritic cells. It is a rare tumor that can present in nodal and extranodal sites. CASE: A 41-year-old woman presented with a 6-week history of an enlarging lump in her neck. Fine needle aspiration (FNA) was performed. FNA findings led to the diagnosis of malignant tumor. We suggested that it was an FDC sarcoma. The tumor was excised. On microscopic examination, the tumor largely replaced the lymph node. It was composed of oval to spindle cells arranged in sheets and interlacing fascicles with a storiform pattern. The tumor cells showed widespread immunopositivity for CD21. Based on these findings the diagnosis of FDC sarcoma was made. Two years later local recurrence occurred. CONCLUSION: FDC sarcoma has characteristic FNA findings. Once FDC sarcoma is suspected cytologically or histologically, immunohistochemical stains must be performed for reaching the correct diagnosis. Awareness of this rare entity is necessary to avoid its underrecognition.

Which is more effective in reducing secondary brain damage resulting from cyclooxygenase expression following traumatic brain injury: calcium channel blockers or cox inhibitors?

OBJECTIVES: To evaluate localizations of cyclooxygenase (COX)-1 and COX-2 following traumatic brain injury (TBI) and the effects of 2 therapeutic agents on COX inhibition. METHODS: Forty rabbits were used in this study for developing a TBI model and divided into 4 groups (n=10) at Afyon Kocatepe University School of Medicine, Afyonkarahisar, Turkey in June 2004. Differential cellular COX-1 and COX-2 protein expression profiles were analyzed following TBI, and the effects of 2 therapeutic agents, indomethacin and nimodipine, on COX inhibition were evaluated immunohistochemically. RESULTS: This study revealed that COX-1 and COX-2 protein expression were significantly increased in vascular endothelial, smooth muscle cells, and CD68+ microglia/macrophages following TBI. Indomethacin inhibited the COX expression in glial cells more than nimodipine, however, both did not affect endothelial COX-1 and COX-2 expression. CONCLUSION: The restricted accumulation of COX-1 at the perilesional area points to an acute inflammatory response and the role of COX-1 in TBI. This study revealed that COX-1 expression should be a pharmacological target following TBI, and COX-2 should also be evaluated in this aspect, and indomethacin is more effective than nimodipine for blocking COX-1.

The effects of desferrioxamine and quercetin on hepatic ischemia-reperfusion induced renal disturbance.

BACKGROUND: The aim of this study was to analyze the effects of 45min of hepatic ischemia and 1h of reperfusion on renal oxidative stress parameters, on renal tissue damage, and the role of Desferrioxamin (Dfx) and Q on these parameters. METHODS: Thirty Wistar albino rats were randomized to five groups. Group I was the control group. Group II received no treatment. Groups III and IV received intramuscular injections of desferrioxamine (100mg/kg) and quercetin (50mg/kg), respectively. Group V was administered Dfx and quercetin in combination. After treatment for 3 days, groups II, III, IV, and V were exposed to total hepatic ischemia for 45min. Plasma alanine aminotransferase levels, renal malondialdehyde and reduced glutathione (GSH) activities were measured after reperfusion for 1h. Histopathological and ultrastructural analysis of renal tissues was carried out. RESULTS: Plasma creatinine and BUN levels were markedly increased in the IR group and pretreated groups. Kidney MDA increased in the IR group, Q and Dfx+Q significantly decreased kidney MDA Kidney GSH levels markedly decreased in the IR group, Dfx significantly increased kidney GSH. No evidence of overt injury was observed in any renal tissue under light and electron microscopy. CONCLUSIONS: Our data demonstrated that 45min of hepatic ischemia and 1h of reperfusion may alter renal functions and may cause oxidative stress on renal tissue. Q and Dfx seem to have a beneficial effect via the GSH system and modulation of MDA levels.

Acute effects of environmental tobacco smoke and dried dung smoke on lung histopathology in rabbits.

AIMS: To compare the effects of cigarette smoke and dried dung smoke exposure on the histopathology of lungs. METHODS: Three groups each with five rabbits were formed. The cigarette smoke group was exposed to cigarette smoke, the biomass group was exposed to dried dung smoke and the control group was exposed to dry air 1 hour daily for 1 month. At the end of 1 month, animals were sacrificed and lung tissues were examined histopathologically. RESULTS: Histopathological evaluation of rabbits' lungs revealed that intraparenchymal vascular congestion and thrombosis, intraparenchymal haemorrhage, respiratory epithelial proliferation, number of macrophages in the alveolar and bronchial lumen, alveolar destruction, emphysematous changes and bronchoalveolar haemorrhage scores were significantly increased in rabbits exposed to cigarette smoke compared with the control group. Respiratory epithelial proliferation, alveoli destruction and emphysematous change scores were significantly increased in rabbits exposed to dried dung smoke compared with the control group. CONCLUSION: Although less than the effects of cigarette smoke, dried dung smoke had severe histopathological effects on rabbits' lungs.