BERRY EXTRACTS IMPROVED INFLAMMATORY CYTOKINES, ANTIOXIDANT ENZYME AND SUPPRESSED THE GENE EXPRESSION ALTERATIONS IN DIABETIC RATS

Objective: The present work was conducted to evaluate the ameliorative effect of red berry (Morus rubra) and white berry (Morus alba) extracts in diabetic rats.Methods: Inflammatory biomarkers; tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), transforming growth factor-β (TGF-β), paraoxanase1 (PON1), gene expression of apoptosis and inflammatory related genes were carried out.Results: Treatment of male rats with streptozotocin (STZ) to induce diabetes increased the levels of TNF-α, IL-1β, TGF-β, the apoptosis rates and the alterations of the pro-apoptosis (eotaxin, caspase-1, and caspase-2) and inflammation; nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB1) and allograft inflammatory factor 1 (AIF-1) related genes. While marked reduction in PON1 level was detected in STZ-induced diabetic rats. However, treatment of STZ-exposed rats with red and white berry extracts exhibited noticeable ameliorations in TNF-α, IL-1β, TGF-β levels and PON1 activity as well as low apoptosis rates and decreased the alteration of the pro-apoptosis and inflammatory related genes.Conclusion: Red and white berry extracts exhibited attenuation in antioxidant status, suppressed inflammatory cytokines, apoptosis and the alterations in the apoptosis and inflammatory related genes induced by STZ in male rats

MYRTUS SPECIES PREVENTS REPRODUCTIVE TOXICITY INDUCED BY DOXORUBICIN IN MALE MICE

Background: Myrtus sp is one of the natural products being used in Unani System of Medicine. Its leaves are frequently used for various ailments like diarrhoea, dysentery, vomiting and osmetic purposes. Objective: the main goal of the present work was to investigate protective effect of Myrtus sp extract against doxorubicin induced sperm abnormalities, genetic toxicity and gene expression alterations. Method: Plant samples were used to obtain plant extraction. Eighty male albino mice were allocated in several groups and treated with doxorubicin alone, doxorubicin plus Myrtus sp extracts for 30 days starting from 24 or 48h after doxorubicin treatment, or supplemented with Myrtus sp extracts for 30 days then treated with doxorubicin treatment. Results: The results revealed that treatment of male mice with doxorubicin then Myrtus sp for one month was the best treatment strategy for protection against doxorubicin induced toxicity. Whereas, Myrtus sp extract significantly preserved male mice from sperm abnormalities induced by doxorubicin treatment, genetic toxicity and gene expression alterations. Conclusion: The results suggested that phenolic compounds exist in the Myrtus sp extract might be contributed to prevention of the reproductive disorders and genotoxicity.Keywords: Myrtus sp, Doxorubicin, Sperm abnormalities, Genetic toxicity, Reproductive gene

Assessment the impact of 17α-methyltestosterone hormone on growth, hormone concentration, molecular and histopathological changes in muscles and testis of Nile tilapia; Oreochromis niloticus

Abstract: The present study was designed to explain clearly why methyltestosterone is widely used by the Egyptian producers of farmed tilapia and also to investigate its fate in treated fish to guarantee that no hazards on consumers, producers and on the environment. In this study, samples of untreated and treated Nile tilapia were collected at several time intervals. Water quality parameters were within the acceptable range for fish growth. The present analyses showed highly significant increase in body weight, body length, condition factor (K), HSI and GSI, between different time intervals (April -November, 2009) in the untreated control and treated groups. On the other hand, plasma testosterone and residual concentration of testosterone hormone in muscle showed highly significant differences between the studied months in untreated control and treated groups. Molecular biological analyses revealed that methyltestosterone was able to induce DNA fragmentation and molecular genetic variability (using RAPD-PCR fingerprinting pattern) in the testis tissues of the treated Nile tilapia; Oreochromis niloticus, which was higher in the first four studied months than the untreated control tilapia. Additionally, histopathological examination showed no changes and no traces of hormone accumulation in the muscle structure. Testis showed moderate number of spermatozoa followed by increasing in number of spermatozoa at the end of the study

temperature changes and marine fish species epinephelus coioides and sparus aurata role of oxidative stress biomarkers in toxicological food studies

The increase of seawater temperature as a result of global climate variation elucidates a major challenge for marine organisms survival in addition to consumers safety. Spotted grouper (Epinephelus coioides) and Seabream (Sparus aurata) were collected in water with different temperature variations at Suez Canal and Alexandria (Suez and Abu Qir bay) in Egypt with the aim to assess expression levels of heat shock proteins such as HSP47, HSP70 and HSP90 genes in addition to antioxidants value through enzymes activity: Glutathione-S-Transferase (GST) and Glutathione Peroxidase (GPx). Research results revealed that expression of the HSP47, HSP70a and HSP90 genes increased in marine fishes tissues collected from Suez Canal, with higher water temperature (23:28ºC), compared with those collected from Alexandria (19:24°C) whereas the content of GPx and GST decreased. Our results show alteration of the marker examined suggesting that the increase of heat shock protein genes expression levels of fish collected from Suez Canal might be exposed mainly to thermal oxidative stress response more than those collect from Alexandria. The increase of heat shock protein-related genes expression could be considered as a factor in prohibiting the heat shock transcription factor that may lead to stimulation of heat-inducible genes in addition to heat acclimation. Thus, warming of water is also likely to alter the composition and abundance of food resources, e.g. fish muscles, available to higher trophic level consumers

Effects of Different Parameters of Diode Laser on Acceleration of Orthodontic Tooth Movement and Its Effect on Relapse: An Experimental Animal Study

AIM: Recent studies have demonstrated that low-level laser therapy (LLLT) can accelerate orthodontic tooth movement. However, there is still controversy about the optimum parameters that can cause acceleration. The present study was designed to examine two different doses of LLLT in the acceleration of orthodontic tooth movement and their effect on relapse. METHODS: An orthodontic appliance was designed to induce tooth movement on lower incisors of rabbits. The in-al-as diode laser was used to radiate different groups of rabbits according to a specific protocol. The amount of tooth movement was measured for 21 days, and then the orthodontic appliance was removed, and the relapse was measured till day 28. RESULTS: The amount of tooth movement was significantly greater in the group with irradiation of low dose in comparison with the high dose group and the control group. The relapse was greatest in the group of low dose irradiation and least in the control group. CONCLUSION: The findings suggest that LLLT with a low dose accelerate the orthodontic tooth movement while LLLT with a high dose was not able to have the same effect. LLLT had a reverse effect on relapse tendency; an increase in the relapse tendency was seen with low dose irradiation

Epidemiology and diagnosis of feline panleukopenia virus in Egypt: Clinical and molecular diagnosis in cats

Aim: This work aimed to study epidemiology and diagnosis of feline panleukopenia virus (FPV) using clinical examination, direct ELISA, RNA viral isolation and identification, and knowing phylogenetic tree of our isolate. Materials and Methods: One hundred and sixty-five cats of different ages and sex were examined. Each cat was examined clinically to detect the clinical manifestations of the disease showing symptoms suggestive of feline panleukopenia (FP) as well as ELISA, and polymerase chain reaction (PCR) amplification analyses were conducted. Results: Our finding includes (a) clinical signs detected in 165 of 165 cats were in the form of lethargy, fever, anorexia, thirst, vomiting, diarrhea, dehydration, and leukopenia. (b) ELISA results revealed that 66 of all examined cats were positive for FPV. (c) The amplification products from all positive samples were confirmed as FPV (VP1) gene by nucleotide sequences analysis, in which 75 samples were positive using PCR amplification for the FPV. (d) Statistical evaluation of ELISA results in comparison to PCR findings. ELISA showed 88%, 100%, and 94.5% for sensitivity, specificity, and accuracy, respectively, while the prevalence of FP among the examined population was 45%. No effect on sex, breed, and age on ELISA results as recorded using Chi-square analysis. Conclusion: The results of the sequence analysis indicated that PCR products of the FPV cDNA exhibited very low variation in their nucleotide sequence of all isolates compared with the published FPV genome, which could be suggested that FPV appears to be genomically stasis compared with other Parvoviruses. The genome sequence of FPLV strain in this study has been deposited in GenBank under the accession number KY466003. Our isolate closely related 100% to isolates from Portugal, which might be the origin of infection to Egypt through importation of cats

Genetic and histopathology studies on mice: effect of fenugreek oil on the efficiency of ovarian and liver tissues

There is a growing interest in understanding the biological effect of medicinal plants. In the present investigation, the effects of fenugreek oil administration on the liver and ovarian activity genetically (i.e., meiotic progression in collected oocytes as well as changes in DNA and RNA content in the liver and ovarian tissues) and histopathologically (i.e., alterations in the liver and ovarian tissues) were examined in mice. Swiss albino female mice were orally administrated with different doses of fenugreek oil for 10 days. The mode and magnitude of effect were found to be depending on the dose of fenugreek oil and type of tissue. Administration with fenugreek oil at 0.1 and 0.15 ml/mouse increased the total number of cumulus-oocyte complexes as well as improved their quality. Cytogenetically, fenugreek oil was able to stimulate the oocytes collected from treated mice at all doses to progress in meiosis. Levels of nucleic acids content in all groups did not significantly change neither in the DNA nor RNA in ovarian-or liver-tissues. Histopathological examination of the ovaries collected from untreated mice as well as from mice treated with 0.05 ml/mouse of fenugreek oil showed no histopathological alterations. However, ovaries of mice treated with 0.1 or 0.15 ml/mouse of fenugreek oil showed improvement in several tissues. To our knowledge, this is the first study that suggests significant stimulating effects of fenugreek oil on the ovarian activity in mice

<i>Jatropha curcas</i> L. kernel prevents benzene induced clastogenicity, gene expression alteration and apoptosis in liver tissues of male rats

225-234Pollution by petrochemical benzene is widespread and a common problem in countries dependent on the oil industry. The risk from benzene exposure arises because is considered as a mutagen with the capacity to affect structural integrity of DNA and the fidelity of its biologic expression. Jatropha curcas (L.) is a multipurpose shrub and used in traditional medicine for various diseases. In this study, we assessed the protective effect of detoxified J. curcas kernel meal (DJKM) against benzene-induced genotoxicity, gene expression alteration and apoptosis in male rats. Adult male rats were treated with benzene and/or several concentrations of DJKM. The results revealed that low, medium and high doses of DJKM prevented negative effects such as DNA damage, expression alterations of CYP1A2, p53 and mdr1b genes, apoptosis or ROS generation induced by benzene. The free radical scavenging activity of the J. curcas kernel meal could be attributed to the steroids and terpenoids present in Jatropha curcas seeds

Effect of Polycyclic Aromatic Hydrocarbons (PAHs) on Modulate Genes Encoding Stress Related Proteins and Antioxidant Enzymes in Different Marine Fish Species of Red Sea Water

Polycyclic aromatic hydrocarbons (PAHs) in the Red sea water were determined at Suez and Ismailia governorates, Egypt. The sites were selected to represent areas with different activities of Suez Gulf water. The concentrations of fifteen PAHs having two to six rings were determined by using HPLC with florescence detection. The total average concentrations of the fifteen PAHs over the Suez governorate sites (S1 and S2) were 1.45 and 0.34 ??g/l, respectively. However those for Ismailia governorate sites (I1 and I2) were 1.06 and 0.24 ??g/l, respectively. PAHs having four to six rings were the predominant compounds in particulate matters. The major sources of PAHs and their impacts on the health of certain types of fish such as Mullet and Sea-bass species were studied through the effect on the expression of stress protein related genes. In addition, expression of stress protein related genes (Cytochrome P450, CYP1A and metallothionein, MT-1A) and antioxidant enzymes (Glutathione-S-Transferase and GST alpha) in liver tissues of Mullet and Sea-bass collected from studied locations in Ismailia governorate and Suez gulf were assessed. The results revealed alterations in the hepatic mRNA levels of CYP1A, MT-A and GST alpha genes in Mullet and Sea-bass collected from S1 location at Suez gulf compared with I1 location at Ismailia governorate and with the S2 and I2 locations as reference site. The current findings suggest that the genes encoding stress related proteins and antioxidant enzymes studied in this paper represent valid biomarkers to detect variation of fish stress conditions attributed to PAHs