Browsing by Author "Him, A."

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Anti-Inflammatory Activities of Diethyl-Ether Extracts of Helichrysum Plicatum Dc. and Tanacetum Balsamita L. in Rats
(Academic Journals inc, 2009) Karaca, M.; Ozbek, H.; Akkan, H. A.; Tutuncu, M.; Ozgokce, F.; Him, A.; Bakir, B.
The aim of this study was to investigate anti-inflammatory activity of the diethyl ether extract of Tanacetum balsamita L. subsp. (TB) and Helichrysum plicatum DC. subsp. (HP) in carrageenan-induced inflammation in rats. Lambda carrageenan (0.05 mL) was injected into the subplantar region of the right hind paw to induce inflammation. Control group and the reference group were administered isotonic saline solution and indomethacin, respectively. TB extract was injected in doses of 25, 50 and 100 mg kg(-1) in the groups TB-25, TB-50 and TB-100, respectively. HP-25 HP-50 and HP-100 groups were injected HP extract in doses of 25, 50 and 100 mg kg(-1). Before the injections and 3 h after the injections the volume of right hind-paw of rats was measured using a plethysmometer. TB and HP had anti-inflammatory effects matching to that of the reference agent at all doses. It was found that reduction in the inflammation was 95.21% with indomethacin, 51.93% with TB-25, 52.55% with TB-50, 61.51% with TB-100, 70.73% with HP-25, 73.15% with HP-50 and 82.90% with HP-100. Median effective dose (ED50) value of TB and HP were found to be 81.484 and 73.030 mg kg(-1), respectively. The results showed that Tanacetum balsamita L. subsp. and Helichrysum plicatum DC. subsp. had a significant anti-inflammatory activity.
Antinociceptive Activity of Alpha-Pinene and Fenchone
(2008) Him, A.; Ozbek, H.; Turel, I.; Oner, A.C.
We aimed to investigate antinociceptive activities of some components of Foeniculum vulgare Mill., commonly known as fennel. In this study, alpha-pinene, limonene, fenchone, trans-anethol and alpha-copaene were investigated for analgesic effects in mice using tail-flick tests which is commonly employed as a pain model. The drugs were injected intraperitoneally in doses of 0.05, 0.1 and 0.2 ml.kg-1. Alpha-pinene and fenchone caused significant reduction in the nociceptive threshold in the tail-flick test. The other compounds tested did not show significant analgesic effects. The motor coordination of mice treated with alpha-pinene or fenchone, evaluated by using the "rotarod" test, was not impaired. The results obtained in the present study indicate that alpha pinene and fenchone, major constituents of Foeniculum vulgare essential oil, have antinociceptive activity in tail-flick test in mice.
Differential Analysis of Effect of High Glucose Level in the Development of Neuropathy in a Tissue Culture Model of Diabetes Mellitus: Role of Hyperosmolality
(Johann Ambrosius Barth verlag Medizinverlage Heidelberg Gmbh, 2008) Ozturk, C.; Erdogan, E.; Oesztuerk, M.; Cengiz, N.; Him, A.
To analyse the contributions of metabolic toxicity of high glucose level and accompanying hyperosmolality to the development of diabetic neuropathy, mouse dorsal root ganglion (DRG) cultures were used. DRGs from postnatal day 7 mice were embedded in collagen gel and incubated in RPMI 1640 Culture medium with increasing concentrations of glucose or equimolar amounts of mannitol which would create similar osmolalities. Outgrowth of axons from the peripheral nerve attached to DRG and migration of cells into the gel were quantified. The extent of cell death, apoptosis and mitosis among the migrating cells and apoptosis among DRG neurons following exposure to high glucose or mannitol were also evaluated. The growth of axons was almost equally affected by increasing concentrations Of glucose or mannitol up to 395 mOsm/kg H2O. Number of migrating cells was close to control values with mannitol between 340-395 mOsm/kg H2O while high concentrations of glucose always decreased it. Exposure to high glucose or mannitol led to increased proportions of dead and apoptotic migrating cells and apoptotic DRG neurons. Mitotic activity was also negatively affected by high glucose or mannitol. While glucose proved significantly more detrimental to migrating cells than mannitol in the latter tests, the extent of apoptosis was similar among DRG neurons in both conditions. In conclusion, the contribution of hyperosmolality to the development of neuropathy in high glucose condition appears to be quite significant. The peripheral nerve cells and neurons, however, are differentially affected by hyperosmolality and metabolic toxicity of high glucose.
The Effects of Diethylether Extract of Helichrysum Plicatum Dc. Subsp Plicatum and Tanacetum Balsamita L. Subsp Balsamitoides (Sch Bip.) Grierson (Asteraceae) on the Acute Liver Toxicity in Rats
(Academic Journals inc, 2010) Tutuncu, M.; Ozbek, H.; Karaca, M.; Akkan, H. A.; Bayram, I.; Cengiz, N.; Him, A.
The aim of this study was to investigate the effects of the diethylether extract of Helichrysum plicatum DC. subsp. plicatum (HP) and Tanacetum balsamita L. subsp. balsamitoides (Sch. Bip.) Grierson (Asteraceae) (TB) in carbontetrachloride (CCl(4))-induced acute liver toxicity in rats. Acute liver toxicity was induced by injecting CCl(4) (0.8 mL kg(-1)) intraperitoneally for 7 days. The control group received isotonic saline only. The reference group received 50 mg kg(-1) silibinin. TB and HP extract was injected in doses of 25, 50 and 100 mg kg(-1). Body weights were measured daily during the experiment. On the 8th day of the experiments blood and liver samples were collected. Serum Alanine aminotransferase (ALT) and Aspartate aminotransferase (AST) were measured in serum samples. Tissue samples were evaluated histopathologically. Some of the rats in TB and HP groups died during the experiments. Serum ALT levels were higher in the TB and HP groups than those in the CCl(4) group. Histopathological findings were similar in the CCl(4), TB and HP groups. The body weight loss was more in the TB and HP groups compared to that of the CCl(4) group. It is concluded that the diethylether extract of Helichrysum plicatum DC. subsp. plicatum and Tanacetum balsamita L. subsp. balsamitoides (Sch. Bip.) Grierson (Asteraceae) did not have a protective effect in carbontetrachloride (CCl(4))-induced acute liver toxicity in rats and even exacerbated the toxicity.
Investigation of Acute Toxicity, Anti-Inflammatory, and Analgesic Effect of Urtica Dioica L
(2009) Tekin, M.; Özbek, H.; Him, A.
In our study, we aimed to investigate the acute toxicity and analgesic effect of Urtica dioica L fixed oil (UD) in mice, and its anti-inflammatory effect in rats. The acute toxicity of UD was tested for the increasing doses between 0.2 and 12.8 mL/kg. The anti-inflammatory effect was studied in carrageenan induced tissue inflammation model and the effect of two different doses of UD was compared with that of isotonic saline, ethyl alcohol, and indomethacin. The analgesic effect was evaluated by tail-flick response and the effect of UD was compared with that of morphine hydrochloride and isotonic saline. It was found that the reduction in inflammation was 95.70% with indomethacin (3 mg/kg i.p.), 47.40 % with 0.05 mL/kg UD i.p. and 56.97% with 0.15 mL/kg UD i.p. Both UD doses showed statistically significant anti-inflammatory effect compared to the control groups but weaker than indomethacin. UD showed no significant analgesic effect compared to the control group. Fixed oil of UD was non-toxic. Our preliminary data show that UD fixed oil extract has a mild anti-inflammatory effect but it is not analgesic or toxic in the dose range examined.
Investigation of Anti-Inflammatory Activity of Bergamot Oil
(TIP ARASTIRMALARI DERNEGI, 2007) Karaca, M.; Özbek, H.; Him, A.; Tütüncü, M.; Akkan, H.A.; Kaplanoǧlu, V.
Aim: Essential oil of Bergamot (BO) was investigated for anti-inflammatory activity using carrageenan-induced rat paw oedema test. Methods: For the anti-inflammatory activity measurement six different groups were established and BO was administered in three different doses: 0.025, 0.05 and 0.10 mL/kg. Indomethacin was used as a reference agent. Results: It was found that reduction in the inflammation was 95.70% with indomethacin, 27.56% with 0.025 mL/kg BO, 30.77% with 0.05 mL/kg BO and 63.39% with 0.10 mL/kg BO. Indomethacin showed the strongest anti-inflammatory activity among the drugs used. The strongest anti-inflammatory activity of BO was seen with 0.10 mL/kg dosage. Median effective dose (ED50) value of BO was found to be 0.079 mL/kg. Conclusion: The results showed that BO posseses promising anti-inflammatory effect.
Investigation of the Anti-Inflammatory and Analgesic Activities of Β-Caryophyllene
(2008) Bakir, B.; Him, A.; Özbek, H.; Düz, E.; Tütüncü, M.
The aim of this study was to investigate the anti-inflammatory and analgesic activities of β-caryophyllene (trons-caryophyllene) in rats and mice. In our previous work, we demonstrated the anti-inflammatory activity of Eugenia caryophyllata essential oil. We performed this study in order to determine the component(s) (such as eugenol, β-caryophyllene, α-humuiene, eugenyl acetate) responsible for these activities. For the anti-inflammatory activity measurement, five different groups were established and β-caryophyllene was administered in three different doses: 0.025, 0.05 and 0.1 ml/kg. Etodolac was used as reference agent. For the analgesic activity measurement, four different groups were established and β-caryophyllene was administered in two different doses: 0.05 and 0.1 ml/kg. Morphine was used as reference agent. Etodolac showed the strongest anti-inflammatory activity among the drugs used.The strongest anti-inflammatory activity of β-caryophyllene was seen with 0.1 ml/kg dosage. The median effective dose (ED50) value of β-caryophyllene was found to be 0.0745 ml/kg. Morphine showed the strongest analgesic activity, but β-caryophyllene did not show analgesic activity at any of the dosages. As a result, it is concluded that β-caryophyllene is a molecule having anti-inflammatory activity, but with no analgesic properties. © Essential Oil Resource Consultants. All rights reserved.
Two Distinct Types of Dying Back Axonal Degeneration in Vitro
(Wiley, 2013) Ozturk, G.; Cengiz, N.; Erdogan, E.; Him, A.; Oguz, E. K.; Yenidunya, E.; Aysit, N.
G. ozturk, N. Cengiz, E. Erdoan, A. Him, E. K. Ouz, E. Yenidunya and N. Ayit (2013) Neuropathology and Applied Neurobiology39, 362376 Two distinct types of dying back axonal degeneration in vitro Aims: In many neurodegenerative diseases and following traumas, dying back degeneration is a common phenomenon that aggravates the pathology and may eventually lead to death of the affected neurone. We aimed to investigate the mechanism of dying back degeneration with an in vitro axonal injury model. Methods: We cultured adult mouse dorsal root ganglion neurones and with a precise laser beam, cut the axons they extended. Preparations were imaged continuously and images were analysed to describe and quantify ensuing events. Potential contributions of calpains and caspases to the degeneration were explored using specific inhibitors and immunohistochemistry. In vivo implications of the results were sought in nerve sections after sciatic nerve cut. Results: The proximal part of the transected axons went under basically two types of dying back degeneration, fragmentation and retraction. In fragmentation the cytoplasm became condensed and with concomitant axial collapse the axon disintegrated into small pieces. In retraction, the severed axon was pulled back to the soma in an organized manner. We demonstrated that fragmentation was associated with a high risk of cell death, while survival rate with retraction was as high as those of uninjured neurones. Regeneration of transected axon was more likely after retraction than following fragmentation. Activities of caspase-3 and calpains but not of caspase-6 were found linked with retraction and regeneration but not with the fragmentation. Conclusions: This study describes two quite distinct types of dying back degeneration that lead an injured neurone to quite different fates.