Displaying publications 1 - 20 of 247 in total

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  1. Nor Malia Abd Warif, Asyraf Akmal Ayob, Wan Marahaini Wan Razali, Siti Balkis Budin, Satirah Zainalabidin, Jamaludin Mohamed
    MyJurnal
    Disturbances in immune system contribute to chronic infection among diabetic patients. Hibiscus sabdariffa L. (roselle) fruit extract has been scientifically proven to possess antioxidant, antidiabetic and antiinflammatory properties. The aim of this study was to investigate the effects of H. sabdariffa fruit extract against oxidative stress parameter and T lymphocyte population in spleen of streptozotocin (STZ) induced diabetic rats. Male Sprague-Dawley rats were injected with 45 mg/kg STZ to induce diabetic condition and further treated with 100 mg/kg H. sabdariffa fruit aquoeus extract daily for 28 days. Spleen was harvested to determine the oxidative stress indicators and quantification of T lymphocytes. The results showed a significant decreased in the number of spleen cells and spleen weight in the diabetic rats compared with control rats. However, there were no significant changes in the level of malondialdehyde (MDA), protein carbonyl and superoxide dismutase (SOD) activity the percentage of spleen CD3+ CD4+ and CD3+ CD8+ T lymphocytes amongst groups of study. In addition, histology observation showed no pathological alteration in spleen histology of diabetic rats. The findings suggested that aqueous extract of H. Sabdariffa fruit supplementation has no effect on the oxidative stress and the percentage of CD3+ CD4+ and CD3+ CD8+ T lymphocytes in spleen of diabetic rats.
    Keywords: Diabetes, H. sabdariffa, spleen, oxidative stress, T lymphocytes
    Matched MeSH terms: Diabetes Mellitus, Experimental
  2. Velmurugan C, Sundaram T, Sampath Kumar R, Vivek B, Sheshadrishekar D, Ashok Kumar BS
    Med J Malaysia, 2011 Mar;66(1):22-6.
    PMID: 23765138
    The hypoglycemic and hypolipidemic effect of Ethanolic extract of Ougeinia oojeinensis (200mg/kg) bark was evaluated with measurements including, Body weight, blood glucose level, urine glucose and biochemical parameters. The ethanolic extracts of the powdered bark was tested for its efficacy in alloxan-induced diabetic rats. Animals were induced for diabetes with Alloxan (150 mg/kg of body weight- i.p.) and treated orally with Ethanolic extract of Ougeinia oojeinensis. The extracts were also evaluated for acute oral toxicity studies and its effect on different biochemical parameters. The extracts showed significant (p<0.01) antihyperglycemic and hypolipidemic activity as compared to diabetic control. The extract shows beneficial effects on blood glucose and urine glucose level. It also reduces the elevated biochemical parameters such as triglycerides (TGL), low density lipoprotein (LDL), very low density lipoprotein (VLDL), Total Cholesterol (TC) and increased the reduced level of high density lipoprotein (HDL) and body weight, which might be due to presence of steroids, tannins, alkaloids and triterpenoids present in that extract. Thus ethanolic extract could serve as good oral hypoglycemic agents and seems to be promising for the development of phytomedicines for diabetes mellitus.
    Matched MeSH terms: Diabetes Mellitus, Experimental*
  3. Sharma JN, Kesavarao U
    Immunopharmacology, 1996 Jun;33(1-3):341-3.
    PMID: 8856181 DOI: 10.1016/0162-3109(96)00104-x
    This study examined the effects of streptozotocin-induced diabetes on blood pressure and cardiac tissue kallikrein levels in WKYR and SHR. Streptozotocin-induced diabetes caused significant (p < 0.001) increase in SBP and DBP in WKYR and SHR as compared with their respective controls. We also observed that the active cardiac tissue kallikrein levels reduced greatly (p < 0.001) in diabetic WKYR and SHR than the normal rats. These findings suggest for the first time that the cardiac tissue kallikrein formation may have a greater role in the regulation of blood pressure and cardiac function.
    Matched MeSH terms: Diabetes Mellitus, Experimental/complications*; Diabetes Mellitus, Experimental/metabolism*; Diabetes Mellitus, Experimental/physiopathology
  4. Mohammed AA, Mohammad GA, Mohamed A, Mohamed A, Ahmed M
    Chin J Nat Med, 2013 Sep;11(5):488-93.
    PMID: 24359772 DOI: 10.1016/S1875-5364(13)60089-8
    The anticoagulant effect of leech saliva was traditionally employed in the treatment of diabetes mellitus complications such as peripheral vascular complications. This study was carried out to examine the effect of leech saliva extract (LSE) on blood glucose levels in alloxan-induced diabetic rats. First, LSE was collected from leeches which were fed on a phagostimulatory solution. Second, total protein concentration was estimated using the Bradford assay. Third, diabetic rats were injected subcutaneously (sc) with LSE at doses of 500 and 1 000 μg·kg(-1) body weight (bw). Other diabetic rats were injected sc with insulin at doses of 10 and 20 U·kg(-1) bw. Another group was injected simultaneously with LSE (250 μg·kg(-1) bw) and insulin (10 U·kg(-1) bw). Fasting blood glucose (FBG) concentrations were monitored during a study period of eight hours at regular intervals. Findings showed that both doses of LSE resulted in a significant and gradual decrease in FBG starting from 10%-18% downfall after two hours of injection reaching the maximal reduction activity of 58% after eight hours. Remarkably, LSE was sufficient to bring the rats to a near norm-glycemic state. The high dose of insulin induced a severe hypoglycemic condition after 2-4 h of injection. The lower dose was able to decline FBG for 2-6 h in rats which became diabetic again after 8 h. On the other hand, the concurrent injection of low doses of LSE and insulin produced a hypoglycemic effect with all rats showing normal FBG levels. Taken together, these findings indicated that the subcutaneous injection of LSE of the medicinal Malaysian leech was able to provide better glycemic control compared with insulin. Moreover, the synergism between LSE and insulin suggests that LSE could be utilized as an adjuvant medication in order to reduce insulin dosage or to achieve better control of blood glucose.
    Matched MeSH terms: Diabetes Mellitus, Experimental/drug therapy*; Diabetes Mellitus, Experimental/metabolism
  5. Sellamuthu PS, Arulselvan P, Fakurazi S, Kandasamy M
    Pak J Pharm Sci, 2014 Jan;27(1):161-7.
    PMID: 24374436
    Salacia chinensis L. is a traditional Southeast Asian herbal medicine and used in the treatment of diabetes. To investigate the antidiabetic properties of mangiferin from Salacia chinensis and its beneficial effect on toxicological and hematological parameters in streptozotocin induced diabetic rats. Mangiferin was orally treated with the dose of 40 mg/kg body weight/day for 30 days to diabetic rats. Biochemical (blood glucose, uric acid, urea and creatinine), toxicological (AST, ALT and ALP) and hematological parameters (red and white blood cells) and their functional indices were evaluated in diabetic treated groups with mangiferin and glibenclamide. Mangiferin treated diabetic rats significantly (p<0.05) lowered the level of blood glucose, in addition, altered the levels of biochemical parameters including urea, uric acid, and creatinine. Toxicological parameters including AST, ALT and ALP were also significantly reduced after treatment with mangiferin in diabetic rats. Similarly, the levels of red blood, white blood cells and their functional indices were significantly improved through the administration of mangiferin. Thus, our results indicate that mangiferin present in S. chinensis possesses antidiabetic properties and nontoxic nature against chemically induced diabetic rats. Further experimental investigations are warrant to make use of its relevant therapeutic effect to substantiate its ethno-medicinal usage.
    Matched MeSH terms: Diabetes Mellitus, Experimental/blood; Diabetes Mellitus, Experimental/drug therapy*
  6. Mohamed EA, Yam MF, Ang LF, Mohamed AJ, Asmawi MZ
    J Acupunct Meridian Stud, 2013 Feb;6(1):31-40.
    PMID: 23433053 DOI: 10.1016/j.jams.2013.01.005
    Orthosiphon stamineus is a popular folk medicine widely used to treat many diseases including diabetes. Previous studies have shown that the sub-fraction of chloroform extract was able to inhibit the rise of blood glucose levels in a glucose tolerance test. This study was carried out to evaluate the chronic effect and possible mechanism of action of the bioactive chloroform sub-fraction of O. stamineus using streptozotocin-induced diabetic rats and in vitro methods. Administration of the chloroform extract sub-fraction 2 (Cƒ2-b) at a dose of 1 g/kg twice daily on diabetic rats for 14 days showed a significant lowering (p < 0.05) of the final blood glucose level compared to the pretreatment level. However, there were no significant differences in the plasma insulin levels post-treatment compared to the pretreatment levels for all doses of Cƒ2-b. Conversely, Cƒ2-b at a concentration of 2 mg/mL significantly increased (p < 0.001) the glucose uptake by the rat diaphragm muscle. The increase in glucose uptake was also shown when the muscle was incubated in a solution containing 1 IU/mL of insulin or 1 mg/mL of metformin. Furthermore, the effect of this sub-fraction on glucose absorption in the everted rat jejunum showed that Cƒ2-b at concentrations of 0.5 mg/mL, 1 mg/mL and, 2 mg/mL significantly reduced the glucose absorption of the jejunum (p < 0.05-0.001). Similarly, the absorption of glucose was also inhibited by 1 mg/mL and 2 mg/mL of metformin (p < 0.001). These results suggest that the effect of Cƒ2-b may be due to extra-pancreatic mechanisms. There was no evidence that the plant extract stimulated the release of insulin in order to lower the blood glucose level.
    Matched MeSH terms: Diabetes Mellitus, Experimental/drug therapy*; Diabetes Mellitus, Experimental/metabolism
  7. Kwan TK, Thambyrajah V
    Med J Malaysia, 1978 Dec;33(2):178-83.
    PMID: 755172
    Matched MeSH terms: Diabetes Mellitus, Experimental/enzymology; Diabetes Mellitus, Experimental/metabolism*
  8. Benchoula K, Khatib A, Quzwain FMC, Che Mohamad CA, Wan Sulaiman WMA, Abdul Wahab R, et al.
    Molecules, 2019 Apr 17;24(8).
    PMID: 30999617 DOI: 10.3390/molecules24081506
    A standard protocol to develop type 1 diabetes in zebrafish is still uncertain due to unpredictable factors. In this study, an optimized protocol was developed and used to evaluate the anti-diabetic activity of Psychotria malayana leaf. The aims of this study were to develop a type 1 diabetic adult zebrafish model and to evaluate the anti-diabetic activity of the plant extract on the developed model. The ability of streptozotocin and alloxan at a different dose to elevate the blood glucose levels in zebrafish was evaluated. While the anti-diabetic activity of P. malayana aqueous extract was evaluated through analysis of blood glucose and LC-MS analysis fingerprinting. The results indicated that a single intraperitoneal injection of 300 mg/kg alloxan was the optimal dose to elevate the fasting blood glucose in zebrafish. Furthermore, the plant extract at 1, 2, and 3 g/kg significantly reduced blood glucose levels in the diabetic zebrafish. In addition, LC-MS-based fingerprinting indicated that 3 g/kg plant extract more effective than other doses. Phytosterols, sugar alcohols, sugar acid, free fatty acids, cyclitols, phenolics, and alkaloid were detected in the extract using GC-MS. In conclusion, P. malayana leaf aqueous extract showed anti-diabetic activity on the developed type 1 diabetic zebrafish model.
    Matched MeSH terms: Diabetes Mellitus, Experimental/blood*; Diabetes Mellitus, Experimental/drug therapy*
  9. Farsi E, Ahmad M, Hor SY, Ahamed MB, Yam MF, Asmawi MZ, et al.
    BMC Complement Altern Med, 2014 07 04;14:220.
    PMID: 24993916 DOI: 10.1186/1472-6882-14-220
    BACKGROUND: Recently, there has been increasing interest in Ficus deltoidea Jack. (Moraceae) due to its chemical composition and the potential health benefits. The present study was undertaken to investigate the effect of extracts of F. deltoidea leaves on diabetes.

    METHODS: The petroleum ether, chloroform and methanol extracts of F. deltoidea were prepared and subjected to standardization using preliminary phytochemical and HPLC analysis. Dose selection was made on the basis of acute oral toxicity study (50-5000 mg/kg b. w.) as per OECD guidelines. Diabetes mellitus was induced with streptozotocin and rats found diabetic were orally administered with the extract (250, 500 and 1000 mg/kg) for 14 days. Levels of blood glucose and insulin were measured in control as well as diabetic rats on 0, 7 and 14th day. In addition, glucose metabolism regulating gene expression was assessed using RT-PCR.

    RESULTS: HPLC analysis revealed that the methanol extract is enriched with C-glycosylflavones particularly, vitexin and isovitexin. In oral glucose tolerance test, oral administration of the methanol extract increased the glucose tolerance. The methanol extract showed significant (P 

    Matched MeSH terms: Diabetes Mellitus, Experimental/blood; Diabetes Mellitus, Experimental/drug therapy*; Diabetes Mellitus, Experimental/genetics; Diabetes Mellitus, Experimental/metabolism*
  10. Roslan J, Giribabu N, Karim K, Salleh N
    Biomed Pharmacother, 2017 Feb;86:570-582.
    PMID: 28027533 DOI: 10.1016/j.biopha.2016.12.044
    Quercetin is known to possess beneficial effects in ameliorating diabetic complications, however the mechanisms underlying cardioprotective effect of this compound in diabetes is not fully revealed. In this study, quercetin effect on oxidative stress, inflammation and apoptosis in the heart in diabetes were investigated. Normal and streptozotocin-nicotinamide induced adult male diabetic rats received quercetin (10, 25 and 50mg/kg/bw) orally for 28days were anesthetized and hemodynamic parameters i.e. systolic blood pressure (SBP), diastolic blood pressure (DBP) and heart rate (HR) were measured. Blood was collected for analyses of fasting glucose (FBG), insulin and cardiac injury marker levels (troponin-C, CK-MB and LDH). Following sacrificed, heart was harvested and histopathological changes were observed. Heart was subjected for analyses of oxidative stress marker i.e. lipid peroxidation and activity and expression levels of anti-oxidative enzymes i.e. SOD, CAT and GPx. Levels of inflammation in the heart were determined by measuring nuclear factor (p65-NF-κB), tumor necrosis factor (TNF-α), interleukins (IL)-1β and IL-6 levels by using enzyme-linked immunoassay (ELISA). Distribution and expression levels of TNF-α and Ikk-β (inflammatory markers), caspase-3, caspase-9, Blc-2 and Bax (apoptosis markers) in the heart were identified by immunohistochemistry and Western blotting respectively.
    Matched MeSH terms: Diabetes Mellitus, Experimental/blood; Diabetes Mellitus, Experimental/chemically induced; Diabetes Mellitus, Experimental/drug therapy*; Diabetes Mellitus, Experimental/metabolism
  11. Sarmadi B, Aminuddin F, Hamid M, Saari N, Abdul-Hamid A, Ismail A
    Food Chem, 2012 Sep 15;134(2):905-11.
    PMID: 23107706 DOI: 10.1016/j.foodchem.2012.02.202
    Fat, alkaloid and polyphenol contents of two clones of cocoa (UIT1 and PBC 140) were removed and the remaining powder was autolyzed at pH 3.5 and 5.2. Based on the results, autolysates of UIT produced at pH 3.5 exhibited the highest ability to inhibit α-amylase activity. However, no α-glucosidase inhibition activity was observed under the conditions specified. Autolysates produced under pH 3.5 caused the highest amount of insulin secretion. In streptozotocin-diabetic rats, all cocoa autolysates significantly decreased blood glucose at 4h. To assure that the results from the assays were not due to the polyphenols of cocoa autolysates qualitative and quantitative tests were applied. According to their results cocoa autolysates were found to be free from polyphenols. Analysis of amino acid composition revealed that cocoa autolysates were abundant in hydrophobic amino acids. It can be suggested that besides other compounds of cocoa, its peptides and amino acids could contribute to its health benefits.
    Matched MeSH terms: Diabetes Mellitus, Experimental/drug therapy*; Diabetes Mellitus, Experimental/metabolism
  12. Hassan Z, Yam MF, Ahmad M, Yusof AP
    Molecules, 2010;15(12):9008-23.
    PMID: 21150821 DOI: 10.3390/molecules15129008
    Gynura procumbens (Lour.) Merr (family Compositae) is cultivated in Southeast Asia, especially Indonesia, Malaysia and Thailand, for medicinal purposes. This study evaluated the in vivo hypoglycemic properties of the water extract of G. procumbens following 14 days of treatment and in vitro in RIN-5F cells. Glucose absorption from the intestines and its glucose uptake in abdominal skeletal muscle were assessed. The antidiabetic effect of water extract of G. procumbens leaves was investigated in streptozotocin-induced diabetic rats. The intraperitoneal glucose tolerance test (IPGTT) was performed in diabetic rats treated with G. procumbens water extract for 14 days. In the IPGTT, blood was collected for insulin and blood glucose measurement. After the IPGTT, the pancreases were collected for immunohistochemical study of β-cells of the islets of Langerhans. The possible antidiabetic mechanisms of G. procumbens were assessed through in vitro RIN-5F cell study, intestinal glucose absorption and glucose uptake by muscle. The results showed that G. procumbens significantly decreased blood glucose levels after 14 days of treatment and improved outcome of the IPGTT. However, G. procumbens did not show a significant effect on insulin level either in the in vivo test or the in vitro RIN-5F cell culture study. G. procumbens also showed minimal effects on β-cells of the islets of Langerhans in the pancreas. However, G. procumbens only significantly increased glucose uptake by muscle tissues. From the findings we can conclude that G. procumbens water extract exerted its hypoglycemic effect by promoting glucose uptake by muscles.
    Matched MeSH terms: Diabetes Mellitus, Experimental/drug therapy*; Diabetes Mellitus, Experimental/metabolism
  13. Umar A, Ahmed QU, Muhammad BY, Dogarai BB, Soad SZ
    J Ethnopharmacol, 2010 Aug 19;131(1):140-5.
    PMID: 20600771 DOI: 10.1016/j.jep.2010.06.016
    The present study was aimed to investigate the anti-diabetic potential of the leaves of Tetracera scandens Linn. Merr. (Dilleniaceae) in vivo with regard to prove its efficacy by local herbalists in the treatment of diabetes frailties.
    Matched MeSH terms: Diabetes Mellitus, Experimental/blood; Diabetes Mellitus, Experimental/drug therapy*
  14. Lau P, Bidin N, Krishnan G, AnaybBaleg SM, Sum MB, Bakhtiar H, et al.
    PMID: 26313856 DOI: 10.1016/j.jphotobiol.2015.08.009
    The photobiostimulation effects of near infrared 808 nm diode laser irradiance on diabetic wound were investigated. 120 rats were induced with diabetes by streptozotocin injection. Full thickness punch wounds of 6mm diameter were created on the dorsal part of the rats. All rats were randomly distributed into four groups; one group served as control group, whereas three groups were stimulated daily with unchanged energy density dose of 5 J/cm(2) with different power density, which were 0.1 W/cm(2), 0.2 W/cm(2) and 0.3 W/cm(2) with different exposure duration of 50s, 25s and 17s, respectively. Ten rats from each group were sacrificed on day 3, 6 and 9, respectively. Skin tissues were removed for histological purpose. The contraction of wound was found optimized after exposure with 0.1 W/cm(2). Based on the histological evidence, laser therapy has shown able to promote wound repair through enhanced epithelialization and collagen fiber synthesis. Generally, irradiated groups were advanced in terms of healing than non-irradiated group.
    Matched MeSH terms: Diabetes Mellitus, Experimental/complications; Diabetes Mellitus, Experimental/physiopathology*
  15. Wan Nazaimoon WM, Khalid BA
    Malays J Pathol, 2002 Dec;24(2):77-82.
    PMID: 12887164
    This study determined the effects of palm vitamin E (TRF) diet on the levels of blood glucose, glycated hemoglobin (gHb), serum advanced glycosylation end-products (AGE) and malondialdehyde (MDA) of diabetic Sprague-Dawley rats. The rats received either control (normal rat chow), TRF diet (normal chow fortified with TRF at 1 g/kg) or Vitamin C diet (vitamin E-deficient but contained vitamin C at 45 g/kg). The animals were maintained on the respective diet for 4 weeks, made diabetic with streptozotocin (STZ), then followed-up for a further 8 weeks. At week-4, mean serum AGE levels of rats given TRF diet (0.7 +/- 0.3 units/ml) were significantly lower than those of control or Vitamin C diet rats (p pounds 0.03). The levels increased after STZ and became comparable to the other groups. At week 12, blood glucose (20.9 +/- 6.9 mM) and gHb (10.0 +/- 1.6%) of rats on TRF diet remained significantly low compared to that of control or Vitamin C diet rats (p pounds 0.03). MDA however, was not affected and remained comparable between groups throughout the study. This study showed that TRF may be a useful antioxidant; effectively prevented increase in AGE in normal rats, and caused decrease in blood glucose and gHb in diabetic rats. Further studies are needed to elucidate the mechanisms of action of TRF.
    Matched MeSH terms: Diabetes Mellitus, Experimental/blood; Diabetes Mellitus, Experimental/diet therapy*
  16. Mohammad Noor HS, Ismail NH, Kasim N, Mediani A, Mohd Zohdi R, Ali AM, et al.
    Appl Biochem Biotechnol, 2020 Sep;192(1):1-21.
    PMID: 32215848 DOI: 10.1007/s12010-020-03304-y
    Patients are turning into herbs for the management of diabetes, which cause increasing in the demand of plant-based alternative medicines. Ficus deltoidea or locally known as "Mas Cotek" in Malaysia is a famous herbal plant. However, many varieties of F. deltoidea existed with varied antidiabetic activities inspire us to evaluate in vivo antidiabetic activity of the most available varieties of F. deltoidea. Therefore, antihyperglycemic effect of different varieties of F. deltoidea at dose 250 mg/kg was evaluated on streptozotocin-nicotinamide-induced diabetic rats and further assessed their urinary metabolites using proton nuclear magnetic resonance (1H-NMR). The hyperglycemic blood level improved towards normoglycemic state after 30 days of treatment with standardized extracts of F. deltoidea var. trengganuensis, var. kunstleri, and var. intermedia. The extracts also significantly managed the biochemical parameters in diabetic rats. Metabolomics results showed these varieties were able to manage the altered metabolites of diabetic rats by shifting some of the metabolites back to their normal state. This knowledge might be very important in suggesting the use of these herbs in long-term treatment for diabetes. The most potential variety can be recommended, which may be useful for further pharmacological studies and herbal authentication processes.
    Matched MeSH terms: Diabetes Mellitus, Experimental/drug therapy*; Diabetes Mellitus, Experimental/urine*
  17. Akhtar MT, Bin Mohd Sarib MS, Ismail IS, Abas F, Ismail A, Lajis NH, et al.
    Molecules, 2016 Aug 09;21(8).
    PMID: 27517894 DOI: 10.3390/molecules21081026
    Andrographis paniculata is an annual herb and widely cultivated in Southeast Asian countries for its medicinal use. In recent investigations, A. paniculata was found to be effective against Type 1 diabetes mellitus (Type 1 DM). Here, we used a non-genetic out-bred Sprague-Dawley rat model to test the antidiabetic activity of A. paniculata against Type 2 diabetes mellitus (Type 2 DM). Proton Nuclear Magnetic Resonance (¹H-NMR) spectroscopy in combination with multivariate data analyses was used to evaluate the A. paniculata and metformin induced metabolic effects on the obese and obese-diabetic (obdb) rat models. Compared to the normal rats, high levels of creatinine, lactate, and allantoin were found in the urine of obese rats, whereas, obese-diabetic rats were marked by high glucose, choline and taurine levels, and low lactate, formate, creatinine, citrate, 2-oxoglutarate, succinate, dimethylamine, acetoacetate, acetate, allantoin and hippurate levels. Treatment of A. paniculata leaf water extract was found to be quite effective in restoring the disturbed metabolic profile of obdb rats back towards normal conditions. Thisstudy shows the anti-diabetic potential of A. paniculata plant extract and strengthens the idea of using this plant against the diabetes. Further classical genetic methods and state of the art molecular techniques could provide insights into the molecular mechanisms involved in the pathogenesis of diabetes mellitus and anti-diabetic effects of A. paniculata water extract.
    Matched MeSH terms: Diabetes Mellitus, Experimental/blood; Diabetes Mellitus, Experimental/drug therapy*
  18. Nurdiana S, Goh YM, Ahmad H, Dom SM, Syimal'ain Azmi N, Noor Mohamad Zin NS, et al.
    BMC Complement Altern Med, 2017 Jun 02;17(1):290.
    PMID: 28576138 DOI: 10.1186/s12906-017-1762-8
    BACKGROUND: The potential application of Ficus deltoidea and vitexin for the management of symptomatologies associated with diabetes mellitus (DM) has gained much attention. However, less firm evidence comes from data to augment our understanding of the role of F. deltoidea and vitexin in protecting pancreatic β-cells. The aim of this study was to assess histological and oxidative stress changes in the pancreas of streptozotocin (STZ)-induced diabetic rats following F. deltoidea extract and vitexin treatment.

    METHODS: F. deltoidea and vitexin was administrated orally to six-weeks STZ-induced diabetic rats over 8 weeks period. The glucose and insulin tolerances were assessed by intraperitoneal glucose (2 g/kg) tolerance test (IPGTT) and intraperitoneal insulin (0.65 U/kg) tolerance test (IPITT), respectively. Subsequently, insulin resistance was assessed by homeostasis assessment model of insulin resistance (HOMA-IR), quantitative insulin sensitivity check index (QUICKI) and the insulin/triglyceride-derived McAuley index. The histological changes in the pancreas were then observed by hematoxylin-eosin (H&E) staining. Further, the pattern of fatty acid composition and infrared (IR) spectra of the serum and pancreas were monitored by gas chromatography (GC) method and Fourier Transform Infrared (FT-IR) spectroscopy.

    RESULTS: F. deltoidea and vitexin increased pancreatic antioxidant enzymes and promoted islet regeneration. However, a significant increase in insulin secretion was observed only in rats treated with F. deltoidea. More importantly, reduction of fasting blood glucose is consistent with reduced FT-IR peaks at 1200-1000 cm-1.

    CONCLUSIONS: These results accentuate that F. deltoidea and vitexin could be a potential agent to attenuate pancreatic oxidative damage and advocate their therapeutic potential for treating DM.

    Matched MeSH terms: Diabetes Mellitus, Experimental/drug therapy*; Diabetes Mellitus, Experimental/metabolism
  19. Bera H, Kumar S, Maiti S
    Int J Biol Macromol, 2018 Oct 15;118(Pt A):149-159.
    PMID: 29932998 DOI: 10.1016/j.ijbiomac.2018.06.085
    Olive oil-entrapped diethanolamine-modified high-methoxyl pectin (DMP)-gellan gum (GG)-bionanofiller composites were developed for controlled intragastric delivery of metformin HCl (MFM). DMP had a degree of amidation of 48.7% and was characterized further by FTIR, XRD and DSC analyses. MFM-loaded composites were subsequently accomplished by green synthesis via ionotropic gelation technique using zinc acetate as cross-linker. The thermal, X-ray and infrared analyses suggested an environment in the composites compatible with the drug, except certain degree of attenuation in drug's crystallinity. Scanning electron microscopy revealed almost spherical shape of the composites. Depending upon the mass ratios of GG:DMP, types of nanofiller (neusilin/bentonite/Florite) and oil inclusion, the composites exhibited variable drug encapsulation efficiency (DEE, 50-85%) and extended drug release behaviours (Q8h, 69-94%) in acetate buffer (pH 4.5). The optimized oil-entrapped Florite R NF/GG: DMP (1:1) composites eluted MFM via case-II transport mechanism and its drug release data was best fitted in zero-order kinetic model. The optimized formulation demonstrated excellent gastroretentive properties and substantial hypoglycemic effect in streptozotocin-induced diabetic rats. These novel hybrid matrices were thus found suitable for controlled intragastric delivery of MFM for the management of type 2 diabetes.
    Matched MeSH terms: Diabetes Mellitus, Experimental/drug therapy*; Diabetes Mellitus, Experimental/pathology
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