Serum Total Sialic Acid Levels Research Articles

Evaluation of Total and Lipid-Bound Sialic Acids, Trace and Macro Elements, and Some Biochemical Parameters in Dogs with Babesiosis

The present study was designed to investigate the changes at the levels of total sialic acid (TSA), lipid-bound sialic acid (LSA), trace and macroelements, and some biochemical parameters in dogs naturally infected with babesiosis. While babesiosis group consisted of seven dogs which were diagnosed with babesiosis clinically and parasitologically (ELISA), control group consisted of seven healthy dogs. Serum TSA and LSA levels in blood samples were measured spectrophotometrically by Sydow and Katapodis methods, respectively. Some biochemical parameters and macroelement measurements were performed using a modular autoanalyzer device. Trace mineral measurements were performed by ICP-MS technique. Compared to the healthy group, dogs with babesiosis had considerably higher TSA and LSA levels. Serum AST, ALP, LDH and CK enzyme activities and CRP, glucose, globulin, total bilirubin, urea, uric acid, creatinine and BUN levels of the babesiosis group significantly increased, while total protein level significantly decreased. The changes in ALT enzyme activity and triglyceride, cholesterol, HDL, LDL, HDL-CDL and ferritin levels were not statistically significant. Zinc, copper, magnesium, sodium, and potassium levels of the babesiosis group decreased significantly, while iron and chlorine levels increased significantly (p

Protective effects of resveratrol against fumonisin B1-induced liver toxicity in mice.

The aim of this study was to investigate the effects of resveratrol against fumonisin B1 (FB1)-induced liver toxicity, as, to the best of our knowledge, these effects have not been investigated yet, even though the toxic effects and mechanisms of FB1 and the antioxidative effects of resveratrol are well known. 40 BALB/c mice were divided into control, FB1, resveratrol, and FB1+resveratrol groups. Control received saline for 14 days. The FB1 group received 2.25 mg/kg FB1 every other day for 14 days. The resveratrol group received 10 mg/kg resveratrol for 14 days. The FB1+resveratrol group received 2.25 mg/kg FB1 every other day and 10 mg/kg resveratrol every day for 14 days. All administrations were peritoneal. Alanine aminotransferase (ALT), aspartate aminotransferase (AST), total sialic acid (TSA) levels were analysed in serum samples, while total antioxidant status (TAS) and total oxidant status (TOS) were measured in the liver. Additionally, the liver tissue was examined for histopathological changes. AST, ALT, and TSA were significantly higher in the FB1 group than control. Resveratrol countered FB1 effects for all parameters, including TOS and TAS. Liver histology showed FB1-induced hyperaemia, infiltrations, and megalokaryosis in some hepatocytes. No pathological findings were detected in the control, resveratrol, or FB1+resveratrol group. Our findings confirm resveratrol's protective effect against liver damage and oxidative stress caused by FB1. In addition, they suggest that increased serum TSA levels can be used as a biomarker of FB1-induced hepatotoxicity.

The Serum Total and Lipid-Bound Sialic Acid with Hematological-Biochemical Parameter Levels in Dogs with Dirofilariosis

The present study was planned to investigate the potential changes in the levels of serum total sialic acid (TSA), lipid-bound sialic acid (LSA) and hematological-biochemical parameters in the dogs naturally infected by Dirofilaria immitis. The patient group included the 7 dogs clinically and parasitologically (Modified Knott and PCR) diagnosed with Dirofilaria immitis while 7 healthy dogs were assigned as the control group. The biochemical parameters, blood gas parameters and hematological parameters were tested in the blood samples taken properly according to the guidelines from all the study animals using modular auto-analyser, blood gas analyser and automated blood count devices, respectively. Serum TSA and LSA levels were measured spectrophotometrically using Sydow and Katapodis methods, respectively. Compared with the healthy group, the dogs diagnosed with dirofilariosis were found to have significantly increased levels of serum troponin, triglycerides, VLDL, LDL, BUN, urea and creatinine and enzymatic activities of CK-MB, ALT, AST, ALP and LDH, and statistically significantly decreased levels of cholesterol and HDL (p<0.05). The increases in levels of total protein and total bilirubin, and enzymatic activity of CK were found statistically insignificant (p>0.05). A significantly decreased level of RBC and a significantly increased level of WBC was determined in the dogs with dirofilariosis (p<0.05). The decreases in the levels of Hct and Hb were found statistically insignificant (p>0.05). The differential blood count test of the dogs with dirofilariosis indicated statistically significantly increased eosinophil count (p<0.05). The increases in the neutrophil and basophil counts, and the decreases in the lymphocyte and monocyte counts were detected to be statistically insignificant (p>0.05). In the dogs with dirofilariosis, the decreases in the levels of pCO2, HCO3 and BE as the venous blood gas parameters were detected to be statistically significant (p<0.05). The decreases in the levels of pH and pO2 were determined to be insignificant (p>0.05). The levels of serum TSA and LSA of the dogs with dirofilariosis were found statistically significantly higher than the healthy group (p<0.05). As a conclusion, statistically significant differences were identified between the dogs with dirofilariosis and healthy dogs in terms of sialic acid levels and certain biochemical, venous blood gas and hematological parameters. On the other hand, the present study is the first to investigate the serum sialic acid levels in the dogs with dirofilariosis.

Biochemical Estimation of Total Sialic Acid, Lipid-Bound Sialic Acid and Fucose in Serum Patients with Nasal and Paranasal Sinus Malignancies

Background: It is known that measurement of serum total sialic acid (TSA), lipid bound sialic acid (LBSA) and L-Fucose levels may be altered and associated with different types of disease included malignant tumors, therefore, the evaluation of these compounds in serum cancer patients may elucidate the possibility of using this as a diagnostic marker. Objective: To explore the clinical application of TSA, LBSA and L-Fucose serum levels in patients with different site of nasal and para nasal sinus malignancies and compare with a group of healthy controls. Methods: Blood samples obtained from 16 patients with nasal-paranasal sinus malignancies confirmed cases (12 males, 4 females) (age range 45-73 years) and 28 healthy individuals (18 males, 10 females) (age range 38-67 years) participated in this study. Serum TSA and LBSA levels were determined by using colorimetric methods and the serum Fucose level estimation was done based on the method as adopted by Winzler using cysteine reagent. Results: Results showed that serum levels of TSA, LBSA and L-Fucose were significantly higher in cancer patients compared to normal healthy control (P<0.001) and more increased in patients with ethmoid and frontal sinuses cancer group. Conclusion: Estimation of TSA, LBSA and L-Fucose is suggestive to be a reliable marker as well as can use an effective diagnostic biomarker of cancer patients. Keywords: Sialic acid, lipid-bound sialic acid, Fucose, nasal, paranasal sinus cancer, spectrophotometer Citation: Mohammed AK, Mahdi NR, Ahmed FS. Biochemical estimation of total sialic acid, lipid-bound sialic acid and fucose in serum patients with nasal and paranasal sinus malignancies. Iraqi JMS. 2021; 19(2): 137-146. doi: 10.22578/IJMS.19.2.2

Evaluation of serum total sialic acid in moderate COVID-19 patients with and without gastrointestinal tract manifestations

BackgroundIt is known that SARS-CoV-2 mostly infects the respiratory system causing pneumonia; although it can also affect the gastrointestinal tract (GIT), which covered with a bi-layer of mucus rich in glycosylated proteins that terminated by sialic acid. Therefore; this study aimed to evaluate serum total sialic acid (TSA) in moderate COVID-19 patients with and without GIT manifestations. MethodsA total of 161 moderate COVID-19 patients without and with GIT manifestations and 50 controls were enrolled into our study. Serum electrolytes levels were measured by using colorimetric or turbidmetric commercial assay kits, while the level of serum TSA was measured by using a commercial ELISA kit. ResultsOur results showed that serum TSA level was highly significantly increased in moderate COVID-19 patients with GIT manifestations (81.43 ± 8.91) when compared with controls (61.24 ± 6.41) or even moderate COVID-19 patients without GIT manifestations (69.46 ± 7.03). ROC curve analysis showed that AUC for TSA is 0.84 with 76.2 % sensitivity and 73.7 % specificity in discrimination between moderate COVID-19 patients with and without GIT manifestations. Serum potassium and sodium levels were highly significantly decreased in moderate COVID-19 patients with GIT manifestations when compared with controls or even moderate COVID-19 patients without GIT manifestations; while serum calcium level was found to be significantly decreased in moderate COVID-19 patients with GIT manifestations when compared with controls. ConclusionFinally, we can conclude that SA plays a crucial role in the pathogenesis of GIT complications associated with COVID-19 and could be a potential biomarker for the COVID-19 gastrointestinal complications.

Effects of Chitosan and Chitosan Oligosaccharide on Serum and Tissue Sialic Acid Levels in Experimental Fluorosis

In this study, the effect of chitosan (CH) and chitosan oligosaccharide (COS) on serum and tissue (liver, kidney, brain and testis) total sialic acid (TSA) level was investigated in rats with experimental fluorosis. The groups were formed as control, sodium fluoride (NaF), NaF+chitosan (NaF+CH), NaF+chitosan oligosaccharide (NaF+COS), chitosan (CH) and chitosan oligosaccharide (COS). Drinking water of NaF groups was prepared at a concentration of 100 ppm sodium fluoride. Chitosan and chitosan oligosaccharide were given to Experimental groups as 250 mg/kg dose by gastric gavage for ninety days. At the end of the study, TSA level was determined in serum, liver, kidney, brain and testicular tissues. Compared with the control group, it was found that TSA levels increased in serum, liver, kidney, brain and testis tissues in the group treated with sodium fluoride (p<0.05). According to the NaF group, there was a significant decrease in serum levels in the NaF+CH group and in the serum, liver and kidney tissues in the NaF+COS group. It was determined that there was no difference between the control and experimental groups in terms of brain tissue sialic acid level (p>0.05). In conclusion, it can be thought that fluorine intoxication causes an increase in TSA levels by causing cell damage in serum and tissues. In the study presented, CH and COS have been shown to reduce TSA levels. Also, in this study, COS was found to be more effective in reducing the TSA level.

Serum levels of total sialic acid and lipid profile with the severity of the vessel in patients with non-smoker and diabetic coronary artery disease

Background: Coronary Artery Disease (CAD) is a major cause of mortality in most countries. Many risk factors such as high blood pressure, hyperlipidemia, diabetes, age, sex, obesity, smoking, and family history play a role in CAD. The aim of this study was to evaluate the concentration of Total Sialic Acid (TSA) and Lipid Profiles (LP) with the Severity of the Vessel in patients with non-smoker and diabetic CAD, so that by measuring these parameters, effective help for diagnosis and prevention for healthy people Prone to CAD, and also control the treatment of patients. Methods: In this study, 200 individual including 160 patient and 40 control group were considered. All patient groups were non-smokers and diabetic. Patients were divided into 4 groups according to the results of angiography: Patients with Normal angiography (n = 40) with one eclipse (n = 40), patients with double stenosis (n = 40) and patients with eclipse Three vessels (n = 40). The control group was chosen from people who had no history of CAD and other diseases. The lipid profile was measured by standard methods and serum total sialic acid was measured by ELISA method. Results: There was no significant difference between the two groups in age and sex, but there was a significant difference in family history (p<0.05). There was a significant difference in serum glucose level between the patient and the control group (p<0.05), Also hs-CRP serum levels were normal in two patient and control groups. Serum levels of cholesterol, triglyceride and LDL in patient group were significantly higher than that of the control group but HDL serum level was adverse (p <0.05), Also TSA serum level in the patient group was significantly higher than the control group (p<0.05). Conclusion: Serum Total Sialic Acid level in non-smoker and diabetic CAD patients has a significant increase compared to the control group. It seems that the above biochemical parameters contribute significantly to the development and progression of atherosclerosis and CAD, by which timely measurements of these parameters in healthy individual probably can be helpful in preventing and improving CAD and controlling the treatment of patients.

Serum levels of Total Sialic Acid and Lipid Profile with the Severity of the Vessel in patients with non-smoker and diabetic Coronary Artery Disease

Background: Coronary Artery Disease (CAD) is a major cause of mortality in most countries. Many risk factors such as high blood pressure, hyperlipidemia, diabetes, age, sex, obesity, smoking, and family history play a role in CAD. The aim of this study was to evaluate the concentration of Total Sialic Acid (TSA) and Lipid Profiles (LP) with the Severity of the Vessel in patients with non-smoker and diabetic CAD, so that by measuring these parameters, effective help for diagnosis and prevention for healthy people Prone to CAD, and also control the treatment of patients. Methods: In this study, 200 individual including 160 patient and 40 control group were considered. All patient groups were non-smokers and diabetic. Patients were divided into 4 groups according to the results of angiography: Patients with Normal angiography (n = 40) with one eclipse (n = 40), patients with double stenosis (n = 40) and patients with eclipse Three vessels (n = 40). The control group was chosen from people who had no history of CAD and other diseases. The lipid profile was measured by standard methods and serum total sialic acid was measured by ELISA method. Results: There was no significant difference between the two groups in age and sex, but there was a significant difference in family history (p<0.05). There was a significant difference in serum glucose level between the patient and the control group (p<0.05), Also hs-CRP serum levels were normal in two patient and control groups. Serum levels of cholesterol, triglyceride and LDL in patient group were significantly higher than that of the control group but HDL serum level was adverse (p <0.05), Also TSA serum level in the patient group was significantly higher than the control group (p<0.05). Conclusion: Serum Total Sialic Acid level in non-smoker and diabetic CAD patients has a significant increase compared to the control group. It seems that the above biochemical parameters contribute significantly to the development and progression of atherosclerosis and CAD, by which timely measurements of these parameters in healthy individual probably can be helpful in preventing and improving CAD and controlling the treatment of patients.

Sialic acid concentration changes in acute lymphocytic leukemia and acute mylogenous leukemia patients after chemotherapy treatment

Sialic acid—rich glycoprotein binds selectively in human and other organisms cancer cells that can metastasize .This helps these late stage cancer cells enter the blood stream. Biological markers can be used to monitor cancer elevation in the serum. Total sialic acid (TSA) concentration was observed in a number of cancer types, the chemotherapy is used as the only cancer treatment. The present study included 5l patients age (4—69 year) with leukemia, they were included 13 patients with acute lymphoblastic leukemia (ALL), 13 with acute myelogenous leukemia (AML) and 25 with chronic lymphocytic leukemia (CLL). This study included also 50 healthy subjects as normal control, all the patients had chemotherapy. The study included measurements of fasting serum total sialic acid (STSA) level, which is significantly increased in post sampling of leukemia patients compared with normal control subjects. A higher significant difference of STSA at the first week during chemotherapy in the three type of the leukemia patients, also there were significant difference of STSA level at the third week during chemotherapy in the ALL and AML patients. On the other hand, there were no significant differences in STSA level after five weeks of chemotherapy treatment for ALL and AML patients. According the duration of chemotherapy dose there were significant differences in STSA level between the first dose week and third dose of chemotherapy. Also, there were significant differences between the first weeks and 5th weeks of chemotherapy treatment for ALL and AML patients.

Protective effect of Hesperidin and Tiger nut against Acrylamide toxicity in female rats

Phytochemicals that have antioxidant effect play important role in protection against several diseases in humans. This study was carried out to evaluate the efficacy of hesperidin and tiger nut against the early changes that may be related to the toxicity of acrylamide in female rats. 72 Sprague Dawley female rats were divided into six groups (12 rat/group): control group (I); hesperidin (HES) treated group (II); tiger nut (TN) treated group (III); Acrylamide (ACR) treated group (IV); HES-ACR treated group (V); and TN-ACR treated group (VI). There was a significant increase in the levels of serum carcino embryonic antigen (CEA), malondialdehyde (MDA), protein carbonyls (CO), ALT, AST, LDH, urea and creatinine while no significant changes of serum total sialic acid, progesterone (prog) and estradiol (E2) levels, and significant decreases of body weights, catalase (Cat) activity, superoxide dismutase (SOD) activity, reduced glutathione (GSH) level, and glutathione peroxidase (GSH-Px) activity of ACR treated group compared with the control. Our results suggested that supplementation of a diet with hesperidin provided antioxidant defense more significant than tiger nut against the toxicity of ACR in breast, liver and kidney tissues.

N-acetylneuraminic acid: A scrutinizing tool in oral squamous cell carcinoma diagnosis

Oral cancer has one of the highest mortality rate among other malignancies. An attempt has been made to assess the genetic expression of a cell surface glycoprotein component - sialic acid released by the malignant cells which will reflect on the oral squamous cell carcinoma (OSCC). The aim of this study was to estimate and correlate the salivary and serum sialic acid levels in OSCC. In our case-control study, saliva and blood samples were obtained from Group 1 - 10 healthy controls, Group 2 - 12 well-differentiated OSCC, Group 3 - 7 moderately differentiated and 2 poorly differentiated OSCC. Serum and salivary total sialic acid levels were analyzed by Warren's thiobarbituric acid method and acidic ninhydrin method, respectively. The results were analyzed statistically by Student's t-test and Pearson's correlation coefficient (P ≤ 0.05). A significant difference in the serum and salivary sialic acid levels was observed between Group 1 and Group 3 (P = 0.01 and < 0.0001) and in salivary sialic acid between Group 2 and Group 3 (P = 0.02). A significant positive correlation was observed between salivary and serum sialic acid in Groups 2 and 3 together (P = 0.015). As the histopathological grade progresses, there is a marked increase in level of sialic acid. There is a significant positive correlation between serum and salivary sialic acid levels in OSCC. Further research with larger sample size along with grading and staging system may highlight its significance in OSCC.

Serum Total Sialic Acid Level is Elevated in Hypothyroid Patients as an Atherosclerotic Risk Factor.

Serum total sialic acid (TSA) concentration is regarded as an indicator of the risks of atherosclerosis and cardiovascular diseases. The association between SA levels and atherosclerosis risk factors has not been assessed in patients with thyroid diseases. Sixty newly diagnosed treatment-naive hypothyroid patients, 35 with subclinical and 25 with overt hypothyroidism, and 30 euthyroid individuals were analyzed. SA was measured in fasting blood samples, as were routine biochemical parameters, some atherosclerosis markers and carotid artery intima media thickness (CIMT). Mean SA (38.1 ± 12.0 vs. 46.0 ±15.8; P = 0.019) and CIMT (0.57 ± 0.06 vs. 0.62 ± 0.12; P = 0.013) were found to be higher in the patient group compared with the control group. Mean sialic acid was higher in overt hypothyroidism patients compared with subclinical hypothyroidism patients and the control group. No difference was found between the subclinical hypothyroidism group and the control group. Sialic acid level and CIMT had a positive correlation in both the entire population and the hypothyroidism group. The linear regression model established for mean CIMT level in the entire population showed that risk factors of LDL (B ± SE = 0.454 ± 0.206; P = 0.030), uric acid (B ± SE = 1.902 ± 0.686; P = 0.007), hs-CRP (B ± SE = 1.003 ± 0.380; P =0.010), and SA (B ± SE = 2.419 ± 0.450; P < 0.001) were independent predictors of CIMT level. Sialic acid level is elevated in hypothyroid patients. However, this elevation is not related to thyroid hormone levels and autoantibodies. Correlations between SA and atherosclerosis indicators, such as CIMT, LDL, hs-CRP, and uric acid, in hypothyroid individuals suggest that SA may be an indicator of atherogenesis in these patients.

Chemopreventive efficacy of different doses of Ferula asafoetida oleo-gum-resin against 1,2-dimethylhydrazine (DMH) induced rat colon carcinogenesis

Colon cancer is the third most common malignant neoplasm in the world and it remains an important cause of deaths, especially in western countries. Its etiology is known to be a combination of hereditary, environmental, dietary factors and lack of physical activity. Chemoprevention through dietary intervention is an emerging option to reduce mortality due to colon cancer. The present study was aimed to investigate the chemopreventive potential of different doses of Ferula asafoetida oleo-gum-resin on 1,2-dimethylhydrazine (DMH) induced rat colon carcinogenesis by evaluating tumor multiplicity, tumor incidence, and tumor size, Serum total sialic acid levels as well as histoarchitecture of colons of rats subjected to various treatment. Rats were randomly divided into six groups. Group I rats served as control. Group 2 rats received DMH (30 mg/kg body weight (bw)) for 16 weeks. Group 3-5 animals received asafoetida daily at a dose level of 5mg/100gm bw, 10mg/100gm bw and 20mg/100gm bw respectively along with weakly DMH injections. Group 6 rats received asafoetida daily (20mg/100g bw daily) for 16 weeks. Increased tumor incidence and multiplicity was observed in DMH treated rats which were decreased with asafoetida supplementation. Asafoetida at the dose of 10mg/100gm bw had shown profound beneficial effects by exhibiting near normal Total Sialic Acid levels and well-preserved colon histology. These findings suggest that asafoetida dose 10mg/100g bw is minimum dose with maximum protection for colon cancer.

Serum Total Sialic Acid and Highly Sensitive C-reactive Protein: Prognostic Markers for the Diabetic Nephropathy.

Background:This study was undertaken to evaluate and establish the role of total sialic acid (TSA) and highly sensitive C-reactive protein (hs-CRP) in type 2 diabetes mellitus (T2DM) and its correlation with complications such as diabetic nephropathy.Materials and Methods:One hundred fifty-seven patients with T2DM with nephropathy (DN) and 162 patients of T2DM without nephropathy (DM) along with 165 unrelated age and sex-matched healthy controls were included in the study. Serum glucose (fasting and postprandial) levels, renal profile, and lipid profile were done as per standard protocol. Serum TSA test levels and hs-CRP level were evaluated using thiobarbituric acid assay and immunoturbidimetric method respectively.Results:We observed a higher concentration of serum TSA (82.67 ± 6.63 mg/dl) and hs-CRP (3.2 ± 1.44 mg/L) in diabetic nephropathy than the diabetes mellitus group (73.83 ± 6.90 mg/dl and 2.07 ± 1.32 mg/L, respectively). Both TSA and hs-CRP levels were found significantly correlated with fasting and postprandial blood sugar, hemoglobin A1c, and urine microalbumin levels in both DM and DN groups. Multinomial logistic regression analysis showed that both TSA and hs-CRP was independently associated with diabetic nephropathy.Conclusion:High serum TSA and hs-CRP levels may increase the microangiopathic (diabetic nephropathy) complications of T2DM.

Modulation of sialic acid levels among some organs during insulin resistance or hyperglycemic states.

Previous studies have suggested a possible connection between insulin resistance and chronic hyperglycemia with membrane sialic acid content. In this study, the effects of high (20% ad libitum) fructose and glucose feeding on the sialic acid levels of some organs were investigated in rats. The blood glucose levels of the high fructose- and glucose-fed rats were consistently and significantly (P < 0.05) higher than the normal control throughout the experiment. Free serum sialic acid and total hepatic sialic acid levels were elevated in the high fructose- and glucose-fed rats compared to normal control, but only the data for the high glucose-fed group were significantly (P < 0.05) different from the normal control. Conversely, a significant (P < 0.05) decrease in the pancreatic sialic acid level was observed in high glucose-fed group compared to normal control. Also, the high fructose-fed rats had lower, but insignificant (P > 0.05), pancreatic sialic acid level than the normal control. On the other hand, high fructose and glucose feeding did not significantly (P > 0.05) affect the sialic acid levels of the skeletal muscle and heart, though a tendency to increase the sialic acid level was evident in the heart. In the kidney, the sialic acid level was significantly (P < 0.05) increased in both high fructose- and glucose-fed groups. It was concluded that the liver and kidney tend to stimulate sialic acid synthesis, while the pancreas downregulate sialic acids synthesis and/or promote sialic acid release from glycoconjugates. Also, these organs may contribute to high-serum sialic acid level observed during diabetes.

Serum total sialic acid levels in overt and subclinical hypothyroid patients and its relationship with atherosclerotic risk factors

Searchable abstracts of presentations at key conferences in endocrinology ISSN 1470-3947 (print) | ISSN 1479-6848 (online)

Correlation of radiotherapy with serum total and lipid-bound sialic acid in OSCC patients

Context: Increased quantities of glycoconjugates such as Total Sialic Acid (TSA) and Lipid-bound Sialic Acid (LSA) have been detected in the plasma and serum of patients with various malignancies, indicating their usefulness in diagnosis or monitoring of the treatment modality. Aims: (1) To estimate and compare the serum TSA and LSA levels in Oral Squamous Cell Carcinoma (OSCC) patients before and after radiotherapy, as also in healthy individuals. (2) To determine the correlation, if any, between Tumor-Node-Metastasis (TNM) staging and levels of TSA and LSA. (3) To determine the use of serum TSA and LSA as biomarkers of OSCC. Settings and Design: The study was designed as a case-control study and was undertaken in a dental college and cancer hospital. Materials and Methods: It was planned to estimate the serum TSA and LSA levels of 20 healthy individuals and of 20 OSCC patients, spectrophotometrically; before starting and one month after completion of radiotherapy. Statistical Analysis: The Statistical Package for Social Sciences (SPSS Version 10.0) was used. Results: The mean serum TSA and LSA levels in OSCC patients decreased significantly after radiotherapy; however, they were still higher than the levels in the controls. In untreated OSCC patients, a statistically significant positive correlation was observed between the TNM stage of the disease and the serum TSA levels; but the same was not found between the TNM stage of the disease and the serum LSA levels. In OSCC, the serum TSA and LSA levels had a positive relationship with the TNM stages. These levels decreased significantly after radiotherapy. Conclusion: Serum TSA and LSA can be utilized as potential diagnostic and prognostic indicators in OSCC.

Estimation of salivary and serum total sialic Acid levels in periodontal health and disease.

Chronic gingivitis and periodontitis are inflammatory diseases. An important function of host sialic acid is to regulate innate immunity. The aim of the study was to assess the concentration of Total sialic acid (TSA) in saliva and serum and also to find out their association if any, in periodontal health and disease. A total of 90 subjects were clinically examined and distributed into three groups (n=30) according to the periodontal status namely healthy, chronic gingivitis and chronic periodontitis.Clinical measurements including probing depth, clinical attachment level, gingival index, oral hygeine index were recorded .TSA concentration was determined in saliva and serum of all subjects. In healthy group the mean salivary TSA level was 39.05mg/dl ±6.35(p<0.0001), mean serum TSA level was 49.75 mg/dl ± 4.87 (p<0.0001). In the chronic gingivitis group the mean salivary TSA level was 68.23 mg/dl ± 2.71 (p<0.0001), mean serum TSA level was 65.65 mg/dl ±3.56 (p<0.0001). In the chronic periodontitis group the mean salivary TSA was 81.33 mg/dl ±3.94 (p<0.0001), mean serum TSA level was 75.98 mg/dl ±3.58 (p<0.0001). The present data indicates that salivary & serum TSA levels can differentiate between chronic periodontitis patients and normal individuals. Thus it can be used as an adjunct to diagnose, monitor response to therapy, to determine the current periodontal disease status and to assess the treatment outcomes.

Tebukonazol (Fungusit) Uygulanan Cyprinus carpio (L. 1758)’da Serum Total Antioksidan, Oksidan ve Sialik Asit Düzeylerinin İncelenmesi

Investigation of The Serum Total Antioxidant, Oxidant and Sialic Acid Levels of Cyprinus carpio (L. 1758) Treated With Tebuconazole (Fungicide) In the present study was aimed to investigate effects on the levels of serum total antioxidant (TAS), oxidant (TOS) and sialic acid (TSA) in Cyprinus carpio (L., 1758) of tebuconazole used as a fungicide. The fishes were kept in tanks for 15 days in terms of adaptation. After, it was formed three groups each containing 6 fishes. Group II and III were placed into separate tanks containing respectively 2 and 3 mg/L tebuconazole and also group I was placed into normal water for 14 days. It were taken the blood samples from fishes and analyzed the levels of serum TAS, TOS and TSA. Even though the serum TAS levels of Tebuconazole-treated groups were lower compared the control group, in terms of TOS and TSA levels was determined the increases. In conclusion, it was determined that tebuconazole treatments caused important changes on the levels of serum TAS, TOS and TSA in carps.

Serum and erythrocyte membrane sialic acid levels in patients with rheumatoid arthritis and ankylosing spondylitis and a methodological evaluation

Objectives: Aim of this study was to investigate serum and erythrocyte membrane total sialic acid levels in patients with rheumatoid arthritis and ankylosing spondylitis and demonstrate any correlation between total sialic acid and disease activity score and other inflammation variables. Material and methods: Serum total sialic acid and erythrocyte membrane sialic acid levels were measured in 24 rheumatoid arthritis, 19 ankylosing spondylitis patients and 24 healthy controls as well as serum C-reactive protein, anticyclic citrullinated peptide, rheumatoid factor, alkaline phophatase and erythrocyte sedimentation rate and compared with activity of the diseases. Results: Serum total sialic acid levels of patient groups were statistically higher than control group (p<0.05). Serum total sialic acid levels in rheumatoid arthritis were significantly higher than the ankylosing spondylitis patients (p<0.05). There was no significant difference between the groups for erythrocyte membrane sialic acid. Significant correlation was found between serum total sialic acid and serum C-reactive protein in both groups (r=0.411, r=0.825); correlation between serum total sialic acid and erythrocyte sedimentation rate was found only in ankylosing spondylitis group (r=0.515). There was a significantly negative correlation between erythrocyte membrane sialic acid and serum C-reactive protein in ankylosing spondylitis group (r =-0.570). Conclusion: Serum total sialic acid is a useful diagnostic tool as an inflammatory parameter and can be used in the differential diagnosis of rheumatoid arthritis and ankylosing spondylitis.