May supplementation of coenzyme Q10 help prevent development of hydatidiform mole?.

OBJECTIVE: The pathological mechanisms of gestational trophoblastic disease have not yet been clearly determined. It is thought that oxidative damage contributes to the process. The aim of this study was to determine the levels of coenzyme Q10 (CoQ 10), DNA damage, and lipid peroxidation in patients with hydatidiform mole. MATERIALS AND METHODS: The authors studied the levels of CoQ10, 8-hydroxydeoxyguanosine (8-OHdG), malondialdehyde (MDA) by high-performance liquid chromatography (HPLC), and the activity of glutathione peroxidase (GPX) by spectrophotometric method in blood obtained from patients with a complete hydatidiform mole (n=29), healthy pregnant women (n=29), and healthy non-pregnant women (n=29). RESULTS: The 8-OHdG/dG ratio (2.8148 ± 0.81592) and MDA (10.8341 ± 4.64875 µmol) were significantly higher in patients with complete hydatidiform mole, while the ubiquinol-10/ubiquinone-10 ratio (0.2107 ± 0.15675) and GPX activity (43.4606 ± 18.31694 mU/mI) were lower (p < 0.001). CONCLUSION: The authors suggest that both mitochondrial oxidative and oxidative DNA damage play important roles in the pathogenesis of complete hydatidiform mole. Therefore supplementation of CoQ10 prevents recurrent gestational trophoblastic disease.

Comparison of icodextrin with thymoquinone: A new hope for postoperative adhesions.

OBJECTIVE: The purpose of this study was to compare the effects of thymoquinone and icodextrin in rats within the framework of an experimental adhesion model. MATERIALS AND METHODS: Rats were separated into three groups: (1) a control group consisting of rats that had 2 ml of isotonic solution administered intraperitoneally, (2) an ICO group administered with 2 ml of 4% icodextrin, and (3) a TQ group administered thymoquinone (10 mg/kg), all following cecal abrasion. The three groups underwent a reoperation on the 7th postoperative day. Hydroxyproline levels were analyzed in the resected adhesive tissues, and histopathological investigations were conducted. Blood samples were collected for biochemical analyses. RESULTS: Fewer postoperative adhesions were observed in the ICO and TQ groups compared with the control group. A comparison of the TQ and ICO groups revealed lowers levels of postoperative adhesions in the TQ group. Compared with the control group, malondialdehyde, 8-OH-deoxyguanosine/deoxyguanosine (8-OHdG/10dG), Coenzyme Q10 (CoQ10), and CoenzymeQ10/reduced CoenzymeQ10 (CoQ10/CoQ10H) values were found to be lower in the TQ and ICO groups. When the TQ and ICO groups were compared with respect to their biochemical parameters, the results for all of the four parameters were found to be statistically significantly lower in the TQ group (P < 0.000). The levels of hydroxyproline in the control, ICO, and TQ groups were found to be (mean ± standard deviation) 502.25 ± 90.39 µg/g, 342.13 ± 66.61 µg/g, and 287.88 ± 49.59 µg/g, respectively. CONCLUSIONS: A comparison of the antiadhesive effects of thymoquinone and icodextrin revealed thymoquinone to be more effective. These results indicate that thymoquinone is an efficient and strong antiadhesive molecule.

Decreased paraoxonase1 activity and increased malondialdehyde and oxidative DNA damage levels in primary open angle glaucoma.

To investigate the malondialdehyde (MDA) levels, paraoxonase1 (PON1) activity and 8-hydroxy 2-deoxyguanosine (8-OHdG) levels in the primary open angle glaucoma (POAG) patient. Blood samples from 52 healthy individuals and 53 patients with POAG were analyzed for MDA and 8-OHdG by HPLC (high-performance liquid chromatography) and PON1 by spectrophotometry. The data obtained were analyzed statistically. MDA levels were 10.46±8.4 and 4.70±1.79 µmol; PON1 levels were 121±39.55 and 161.62±60.22 U/mL; and 8-OHdG values were 1.32±0.53/106 dG and 0.47±0.27/106 dG in the POAG patients and the control group, respectively. The difference was significant in MDA levels, 8-OHdG levels and PON1 activity in POAG patients in comparison with controls (P<0.001). We concluded that the observed increase in MDA and 8-OHdG levels may be correlated with decreased PON1 activity. Oxidative stress plays an important role in glaucoma development.

The impact of high fructose on cardiovascular system: Role of α-lipoic acid.

The aim of this study was to evaluate the role of α-lipoic acid (α-LA) on oxidative damage and inflammation that occur in endothelium of aorta and heart while constant consumption of high-fructose corn syrup (HFCS). The rats were randomly divided into three groups with each group containing eight rats. The groups include HFCS, HFCS + α-LA treatment, and control. HFCS was given to the rats at a ratio of 30% of F30 corn syrup in drinking water for 10 weeks. α-LA treatment was given to the rats at a dose of 100 mg/kg/day orally for the last 6 weeks. At the end of the experiment, the rats were killed by cervical dislocation. The blood samples were collected for biochemical studies, and the aortic and cardiac tissues were collected for evaluation of oxidant-antioxidant system, tissue bath, and pathological examination. HFCS had increased the levels of malondialdehyde, creatine kinase MB, lactate dehydrogenase, and uric acid and showed significant structural changes in the heart of the rats by histopathology. Those changes were improved by α-LA treatment as it was found in this treatment group. Immunohistochemical expressions of tumor necrosis factor α and inducible nitric oxide synthase were increased in HFCS group, and these receptor levels were decreased by α-LA treatment. All the tissue bath studies supported these findings. Chronic consumption of HFCS caused several problems like cardiac and endothelial injury of aorta by hyperuricemia and induced oxidative stress and inflammation. α-LA treatment reduced uric acid levels, oxidative stress, and corrected vascular responses. α-LA can be added to cardiac drugs due to its cardiovascular protective effects against the cardiovascular diseases.

Detection of borderline dosage of malathion intoxication in a rat's brain.

OBJECTIVE: Humans and other animals are liable to expose to low doses of malathion (MAL). However, experimental studies on its toxic threshold dose and toxic low-dose effects have not been conducted. The aims of this study were to detect the initiation of the toxic effects of sub-acute low doses (2.5, 5, and 10 mg/kg) of MAL by immunohistochemical and biochemical parameters in rat brain. MATERIALS AND METHODS: Twenty-eight rats were randomly assigned into four groups (n=7) including control and three different amounts of MAL-exposed groups (2.5, 5, and 10 mg/kg). RESULTS: On immunohistochemical examination, the number of caspase-3-positive cells in all MAL-exposed groups was significantly higher than in the control group. Consistent with this, the total antioxidant capacity, total oxidant status, and the levels of superoxide dismutase, malondialdehyde, and paraoxanase activity were significantly different in the 5 and 10 mg/kg MAL-exposed groups compared with the control group. Additionally, the total oxidant status and malondialdehyde levels were significantly higher in the 5 and 10 mg/kg MAL-exposed groups compared with those in the 2.5 mg/kg MAL-exposed group. CONCLUSIONS: Our results indicate that over 5 mg/kg MAL exposure may result in dose-dependent oxidative stress, increased caspase-3 activity, and launching to the toxic effects in rat brain.

The effects of caffeic acid phenethyl ester (CAPE) on bacterial translocation and inflammatory response in an experimental intestinal obstruction model in rats.

OBJECTIVE: Intestinal obstruction (IO) is a disease which generates approximately 20% of emergency surgery and tends to with high mortality. Prevention of oxidative stress, bacterial translocation and tissue damage caused by IO is an important medical issue. Caffeic acid phenethyl ester (CAPE) is an anti-inflammatory, antioxidant, anti-bacterial and immunomodulatory agent. In this experimental study, we aimed to investigate the effects of CAPE on bacterial translocation, inflammatory response, oxidative stress and tissue injury caused by intestinal obstruction in a rat model. MATERIALS AND METHODS: Breafly, thirty Wistar albino rats divided into three groups as Sham (n=10), IO (n=10) and IO + CAPE (10 µmol/kg day, intraperitoneal) (n=10). The tissues from the study groups were examined biochemically, microbiologically and histopathologically. RESULTS: In CAPE treated group, decreased serum levels of proinflammatory cytokines (TNF-α, IL-6, IL-1ß) and CRP (p < 0.05), additionally increased serum levels of antioxidant parameters (PONS, TAS) (p < 0.05), were observed after IO. Microbiologically, the rates of positive cultures of the lymph node, spleen, liver and blood were significantly decreased in CAPE treated group compared to the IO group. Also histopathological examination showed that the intestinal mucosal injury score and hepatic portal inflammation score were significantly decreased in the CAPE treated group (p < 0.05). CONCLUSIONS: It is suggested that intraperitoneal administration of CAPE might has potential antibacterial, anti-inflammatory, antioxidant and immunomodulatory effects in IO. So, further studies on IO are needed to evaluate exact antibacterial, antiinflammatory, antioxidant and immunomodulatory effects of CAPE.

Assesment the role of oxidative stress and efficacy of caffeic acid phenethyl ester (CAPE) on neurotoxicity induced by isoniazid and ethambutol in a rat model.

OBJECTIVE: The aim of this study were to investigate a role of oxidative stress and the therapeutic efficacy of caffeic acid phenethyl ester (CAPE) in the pathogenesis of neurotoxicity induced by isoniazid and etambutol in a rat model. MATERIALS AND METHODS: Male Sprague-Dawley rats were randomly divided into eight experimental groups: control, INH, ETM, INH+ETM, INH+CAPE, ETM+CAPE, INH+ETM+CAPE, and CAPE treatment group, with ten animals in each group. INH and ETM doses were given orally within tap water for 30 days. CAPE was administered into relevant groups intraperitoneally for 30 days. Brain tissue and sciatic nerve were removed for biochemical and histopathological investigation. RESULTS: In the INH, ETM, and INH+ETM groups, malondialdehyde (MDA) and total oxidant status (TOS) levels were significantly higher than those of the control group (p < 0.05). Also, in these groups, brain total antioxidant capacity (TAC) levels, and superoxide dismutase (SOD) and PON-1 activities were decreased compared with the control group (p < 0.05). By a CAPE supplement within INH and ETM groups, there was a significant decrease in MDA and TOS (p < 0.05). In addition to a significant increase in TAC levels, and SOD and PON-1 activities both in brain and sciatic nerve tissues (p < 0.05). CONCLUSIONS: CAPE may protect against INH- and ETM-induced neurotoxicity in rat brain and sciatic nerve.

Is intralipid fat emulsion a promising therapeutic strategy on neurotoxicity induced by malathion in rats?

AIM: Malathion is one of the most widely used organophosphate pesticides and herbicides. It has given rise to major clinical problems by its poisoning in all over the world. Malathion also a highly lipophilic agent, and tends to accumulate within lipid-rich tissue like a brain in the body, causing toxicity. Therefore, the study was aimed to investigate if there is a possible beneficial effect of using intralipid fat emulsion (IFE) on the neurotoxicity, and to detect it time-dependently at the beginning, 6th and 12th hours of M intoxication. MATERIALS AND METHODS: Forty-eight rats were randomly divided into six groups including: control (C), Lipid (L) group (18.6 mL/kg oral IFE), Malathion (M) group (10 mg/kg oral M), M0L group (IFE treated after immediate from M), M6L group (IFE treated after 6 hours from M), M12L group (IFE treated after 12 hours from M). RESULTS: M group in comparison with all others group, there was an increase in the total oxidant status (TOS) level. M group in comparison with C, L, M0L groups, it was seen significantly decrease in the total antioxidant capacity (TAC) level. Interestingly, M group in comparison with M6L and M12L groups, there was no significant difference among these groups in terms of the TAC levels. Although there was no significant difference among C, L and M0L groups in terms of both TAC and TOS levels, but was significant difference C, L groups in comparison with M6L, M12L groups in terms of TAC levels. C group in comparison with L, M0L, M6L, M12L groups in terms of TOS levels, there was no significant difference. These findings have indicated that IFE seriously reduced TOS levels in all the groups depending on time. Also, M0L group in comparison with M6L and M12L groups, there was significantly increase of the TAC levels. There was no statistically significant difference between M6L and M12L groups. These biochemical results were confirmed with immunohistochemical results. CONCLUSIONS: The study has had some certain evidence that IFE is a promising safe therapy for acutely intoxicated cases by organophosphate. It is much more effective if used at the beginning of organophosphate poisoning. As such, there is no need to avoid using IFE in clinical practice.

Plasma coenzyme Q10 levels in type 2 diabetic patients with retinopathy.

AIM: To determine the relationship between proliferative diabetic retinopathy (PDRP) and plasma coenzyme Q10(CoQ10) concentration. METHODS: Patients with type 2 diabetes and PDRP were determined to be the case group (n=50). The control group was consist of healthy individuals (n=50). Plasma CoQ10 and malondialdehyde (MDA) levels were measured in both groups. RESULTS: Ubiquinone-10 (Coenzyme Q10) levels in PDRP and control subjects are 3.81±1.19µmol/L and 1.91±0.62µmol/L, respectively. Plasma MDA levels in PDRP and control subjects were 8.16±2µmol/L and 3.44±2.08µmol/L, respectively. Ratio of Ubiquinol-10/ubiquinone-10 in PDRP and control subjects were 0.26±0.16 and 1.41±0.68, respectively. CONCLUSION: The ratio of ubiquinol-10/ubiquinone-10 is found lower in patients with PDRP. High levels of plasma ubiquinol-10/ubiquinone-10 ratio indicate the protective effect on diabetic retinopathy.

Adverse reaction of topical etofenamate: petechial eruption / Reacción adversa del etofenamato tópico: erupción petequial

Etofenamate is a non-steroidal anti-inflammatory drug (NSAID). Clinical findings caused by etofenamate are uncommon. Allergic contact dermatitis is the most common cutaneous reaction reported. But petechial eruption due to etofenamate had not been reported yet. This report concerns an 11-year old male with petechial eruption after application of topical etofenamate. Physicians need to be aware that patients can develop an asymptomatic purpuric eruption when etofenamate is ordered.

El etofenamato es un antiinflamatorio no esteroideo (AINE). Los hallazgos clínicos sobre los efectos del etofenamato son poco comunes. La dermatitis alérgica por contacto es la reacción cutánea más comúnmente reportada. En cambio, la erupción petequial a causa del etofenamato no se había reportado hasta ahora. Este reporte trata de un varón de 11 años de edad con erupción petequial tras la aplicación del etofenamato tópico. Es necesario que los médicos tomen conciencia de que los pacientes pueden desarrollar una erupción púrpura asintomática, a la hora de prescribir el etofenamato.

Effects of sulforophane and curcumin on oxidative stress created by acute malathion toxicity in rats.

BACKGROUND AND OBJECTIVES: Organophosphate insecticides (OPIs) are widely used in agriculture and horticulture for controlling insects in crops, ornamentals, lawns, fruits, and vegetables. But, there have not yet any study about effects of sulforophane (SFN) and curcumin (CUR) on the oxidative stress created by acute toxic effects of malathion (MAL) as an OPI often causing human and animal poisoning. AIM: The aim of this study was to investigate the effects of SFN and CUR on the oxidative stress created in the lung, liver, and kidney tissues of rats by acute MAL toxicity. MATERIALS AND METHODS: Thirty-six mature Sprague Dawley rats weighing 200-250 g were used. The rats were randomly divided into six groups: unmedicated control, SFN, CUR, MAL control, MAL + SFN, and MAL + CUR. Tissue samples were analyzed for glutathione (GSH), malondialdehyde (MDA), and nitric oxide (NO) levels in the lung, liver, and kidney tissues. Biochemical parameters were measured colorimetrically by using a spectrophotometer. RESULTS: No statistically significantly difference was found when comparing the unmedicated control, SFN, and CUR groups. MAL significantly increased MDA levels in the liver and kidney tissues, but SFN and CUR these levels. MAL did significantly reduce the GSH levels, but SFN and CUR increased these levels by blocking the MAL effect in the liver tissues. Also, MAL significantly increased the NO levels, depending on the severity of the tissue damage, and SFN and CUR attenuated to NO levels and remained under the effect of MAL. CONCLUSIONS: SFN and CUR, which showed similar effects, could be used to protect against the oxidative stress caused by acute malathion intoxication.

Effect of endoscopic sinus surgery on plasma asymmetric dimethylarginine levels in patients with extensive nasal polyposis.

OBJECTIVE: This study examined the effect of endoscopic sinus surgery (ESS) on plasma levels of asymmetric dimethylarginine (ADMA) and mean pulmonary arterial pressure (mPAP) in patients with extensive nasal polyposis (ENP). METHODS: Preoperative and 3 month post-ESS plasma levels of ADMA and mPAP were measured in patients with ENP and in age-and gender-matched controls. RESULTS: The study included 45 patients with ENP and 31 controls (mean ± SD age 39.4 ± 8.8 and 38.1 ± 9.6 years, respectively). The mean preoperative ADMA level in ENP patients (0.69 ± 0.27 µmol/l) was statistically significantly lower than in the control group (1.08 ± 0.37 µmol/l). The postoperative ADMA level increased significantly in ENP patients (0.97 ± 0.36 µmol/l) versus the preoperative level. Mean preoperative mPAP in ENP patients (25.7 ± 5.4 mmHg) was statistically significantly higher than in the control group (20.8 ± 2.1 mmHg), and ENP patients showed significant decreases in mPAP after (21.9 ± 3.5 mmHg) versus before ESS. CONCLUSION: Patients with ENP had lower plasma ADMA levels compared with healthy controls, however ADMA levels and mPAP improved in ENP patients after ESS.

Adverse reaction of topical etofenamate: petechial eruption.

Etofenamate is a non-steroidal anti-inflammatory drug (NSAID). Clinical findings caused by etofenamate are uncommon. Allergic contact dermatitis is the most common cutaneous reaction reported. But petechial eruption due to etofenamate had not been reported yet. This report concerns an 11-year old male with petechial eruption after application of topical etofenamate. Physicians need to be aware that patients can develop an asymptomatic purpuric eruption when etofenamate is ordered.

Prevention of ischemia-reperfusion injury in rat ovarian tissue with the on-off method.

Ischemia is defined as cell death caused by insufficient perfusion of the tissue due to reduction in arterial or venous blood flow, depletion of cellular energy storages, and accumulation of toxic metabolites. The positive effects of controlled reperfusion are known and are used clinically. But the positive effects of controlled reperfusion on ovarian tissue have not been seen in the literature yet. The biochemical and histopathological comparative investigation of rat ovaries that were experimentally exposed to ischemia (IG), ischemia-reperfusion (I/R), and ischemia-controlled reperfusion (ICR) was aimed. Forty rats were divided into four groups (10 rats per group). First group: 3 h ischemia by vascular clips on ovarian tissue. Second group: 3 h ischemia + 1 h reperfusion. Third group: 3 h ischemia + 1 h controlled reperfusion (on-off method: controlled reperfusion by opening and closing the clips (on/off) in 10-second intervals, for 5 times for a total of 100 seconds). Fourth group: healthy rats. Biochemical (tGSH, MDA, and DNA damage level and SOD activity) and histopathological analysis were performed. The highest glutathione and superoxide dismutase measurements were found in ischemia/controlled reperfusion group among the ischemia or ischemia/reperfusion groups. Similarly the damage indicators (malondialdehyde, DNA damage level and histopathological damage grade) were the lowest in ischemia/controlled reperfusion group. These results indicate that controlled reperfusion can be helpful in minimizing ischemia-reperfusion injury in ovarian tissue exposed to ischemia for various reasons (ovarian torsion, tumor, etc.).

Recurrent parotitis as a first manifestation in a child with primary sjogren's syndrome / Parotitis recurrente como primera manifestación en un niño con el síndrome de sjögren primario

Recurrent parotitis is an acute, severe inflammation of one or both parotid glands, the major salivary glands in young children. We report the case of a seven-year old boy with Primary Sjogrens syndrome (PSS) who presented with 15 episodes of painful recurrent bilateral swellings of the parotid glands over a four-year period.

La parotitis recurrente es una inflamación aguda, severa y reiterada de una o ambas glándulas parótidas - la mayor de las glándulas salivares - en los niños pequeños. Se reporta el caso de un niño de siete años de edad con el síndrome de Sjögren primario (SSP). El niño presentó 15 episodios de dolorosas inflamaciones bilaterales recurrentes de las glándulas parótidas por un período de cuatro años.

Recurrent parotitis as a first manifestation in a child with primary Sjogren's syndrome.

Recurrent parotitis is an acute, severe inflammation of one or both parotid glands, the major salivary glands in young children. We report the case of a seven-year old boy with Primary Sjogrens syndrome (PSS) who presented with 15 episodes of painful recurrent bilateral swellings of the parotid glands over a four-year period.

Oxidative DNA damage in retinopathy of prematurity.

PURPOSE: This study examines the levels of oxidative damage in patients with retinopathy of prematurity (ROP). METHODS: Fifty patients were recruited with a birthweight below 1500 g or gestational age below 32 weeks. The cases were classified into those who developed ROP (n=25) and those without ROP (n=25). The authors obtained blood and urine samples from each infant, for measuring 8-hydroxy 2-deoxyguanosine (8-OHdG) and malondialdehyde (MDA) levels, at the time of the first examination at 4-6 postnatal weeks. RESULTS: A significant difference was observed in leukocyte and urine 8-OHdG levels in patients with ROP compared to those without ROP (p<0.001 for both). Similarly, a significant difference was observed in plasma and urine MDA levels in patients with ROP compared to those without ROP (p<0.001 for both). In addition, significant correlations were found between levels of 8-OHdG in leukocyte DNA and plasma MDA (r=0.859, p<0.001), and between levels of urine 8-OHdG excretion and urine MDA (r=0.563, p<0.001). CONCLUSIONS: 8-OHdG in leukocyte DNA and urine levels in premature infants can be useful as an indicator for ROP screening.

Decreased serum paraoxonase 1 activity and increased serum homocysteine and malondialdehyde levels in age-related macular degeneration.

Age-related macular degeneration (AMD) is one of the most common causes of vision loss. AMD has been classified into two forms: atrophic and exudative forms. The exudative form is associated with choroidal neovascularization of the subretinal macular region, resulting in a sudden loss of central vision. However, the exact cause of AMD remains unknown. Several risk factors have been postulated, including smoking, atherosclerosis, and low levels of antioxidant enzymes. Malondialdehyde (MDA), a lipid peroxidation product, is used as a marker of oxidative stress. Paraoxonase 1 (PON1) metabolizes lipid peroxides and prevents oxidation of low-density lipoprotein. Increased levels of homocysteine may cause vascular endothelial injury by releasing free radicals. The purpose of this study is to investigate the relationships between serum PON1 activity and the serum levels of homocysteine and MDA in AMD. Forty patients with exudative-type AMD (63.3 +/- 5 years) and 40 controls (61+/- 4 years) were assessed in a cross-sectional study. The serum PON1 activity was significantly lower in the patients with AMD than that in the controls (p < 0.001). In contrast, the serum levels of MDA and homocysteine were significantly higher in the patients than those in the controls (p < 0.001, for both). In AMD patients, significant negative correlation was found between PON1 activity and MDA level (r = -0.493, p < 0.05) and between PON1 activity and homocysteine level (r = -0.557, p < 0.05). Increased serum homocysteine and MDA levels may be responsible for the decreased PON1 activity in patients with AMD.

Effect of transglutaminase on some properties of cake enriched with various protein sources.

The effect of transglutaminase (TG) enzyme addition (0% and 0.09%) on batter and cake properties, prepared with different protein sources (nonfat dry milk [NFDM], soy flour, and soymilk) and flour types (type A with 11.4% protein and type B with 8.6% protein), was investigated. Specific gravity and pH of cake batters were determined, and physical and chemical analysis of the cake samples was performed. Soy products improved cake weight, volume, softness, protein, and fat contents. NFDM increased the crust redness and crumb lightness more than the other protein sources. TG enzyme addition affected the volume, softness, crust, and crumb color of the cake samples significantly (P < 0.05). The combination of TG enzyme and flour B with lower protein gave more puffed, symmetrical, and softer cake samples. TG had a potential application with different protein sources in cake production. Especially interactions between TG with soy flour and TG and wheat flour with high protein content were important in cake formulations due to the softening effect on crumb.