Dexpanthenol Research Articles

Systemic dexpanthenol as a novel treatment for female pattern hair loss

There are only a few drugs that have been used for the treatment of female pattern hair loss (FPHL). Through use of the Dermatologic Life Quality Index (DLQI) and a modified hair growth questionnaire, we aimed to evaluate the effect of dexpanthenol (DXP) as a new option for FPHL. Women who received 500mg intramuscular DXP weekly for FPHL were included in this study. They were evaluated in terms of DLQI and laboratory characteristics, before and after DXP treatment, and were examined with a modified hair growth questionnaire. Overall satisfaction with the appearance of the hair was described by the patients as 57.1% " I am satisfied," 28.6% "I am very satisfied," and 14.3% "I am neutral (neither satisfied nor dissatisfied)." There was a statistical difference between the mean DLQI scores before and after DXP treatment (P<.001). No statistical difference was found in the laboratory characteristics of the patients before and after DXP treatment (P> 0.05). No side effect was reported during DXP treatment. Dexpanthenol is a safe and novel drug that may increase the quality of life in patients with FPHL.

Primary selection of the prebiotic components in the complex dermatological therapeutic and preventive medicine with probiotic

The aim. Selection of optimal prebiotic components for bacteria of the genus Lactobacillus for their joint use in a complex dermatological therapeutic and preventive medicine with a probiotic.Methods. Co-cultivation of a probiotic strain in a liquid MRS nutrient medium with an active ingredient at selected concentrations. During the cultivation cycle, samples of growing culture were selected at specific intervals to determine bacterial concentration by direct seeding and acidity determination.Results. During 48 h of co-cultivation of lactobacilli with selected components, were observed a significant increase of viable cells, both in control and with the addition of vitamins at selected concentrations (exponential bacterial growth phase), from 48 h to 60 h - decrease of the rate of cell growth as in control group, and in experiments, the number of cells remains almost constant (stationary phase of bacterial growth), after 60 h - decrease of the number of cells (phase of dying).During cultivation, the oxidation of the nutrient medium resulting from the formation of lactic acid carbohydrates and other terminal metabolites were observed; that is, the addition of components slightly increases the biochemical potential of microorganisms, as evidenced by the increase in biomass and acid potential.Although there was no significant difference between one series of experiments with different vitamin contents, the largest increase in viable cell was observed with vitamin B5 (concentration 1 %) and provitamin B5 (concentration 2.5 %).Conclusions. Optimal prebiotic components for use with lactobacilli as part of dosage form were selected. Despite the pronounced synergism of action of the vitamin B5 and D-panthenol, all other components are also promising due to the positive effects on human skin and lack of negative effects on lactobacilli

The therapeutic efficacy of dexpanthenol on sciatic nerve injury in a rat model

Objective: The aim of this study was to evaluate histopathological, functional and bone densitometry examinations of the beneficial effects of dexpanthenol (DEX) on nerve regeneration in a rat model of peripheral nerve crush injury.Methods: Thirty adult Sprague-Dawley rats were divided equally into three groups. A crush injury was simulated in all rats by clamping the right sciatic nerve for one minute. In group 1, one day before the surgical procedure, 500 mg/kg DEX administered via intraperitoneally (ip) was initiated and continued three times in a week during the experiment period as 28 days. In group 2, rats received a dose of 10 mg/kg DEX to investigate possible effects of DEX alone. Group 3 served as the control (sciatic nerve injury) and was not given any drugs.Results: Performance was significantly lower in group 3 compared to the drug treatment groups during the rotarod test (30 rpm and 40 rpm) (p < 0.05). After a while, the rats which were able to remain on the rod was significantly lower in group 3 during the acceleration test (p < 0.05). Hot plate latency test results in group 3 were significantly lower when compared to the other groups (p < 0.05).Conclusion: DEX appears to be useful as a supportive clinical agent for the treatment of pain and nerve damage.

Therapeutic effects of dexpanthenol on the cardiovascular and respiratory systems following cecal ligation and puncture-induced sepsis in rats

ABSTRACT Cecal ligation and puncture (CLP) is a commonly used model of sepsis in vivo. We investigated the effects of dexpanthenol (DXP) on heart, lung and aorta in CLP-induced sepsis in rats. Rats were divided into four groups of eight: group 1, sham (SH); group 2 (DXP), 500 mg/kg DXP injected intraperitoneally (i.p.); group 3 (CLP), CLP performed; group 4 (CLP + DXP), 500 mg/kg DXP injected i.p. after CLP. Heart, lung and aorta specimens were harvested for histopathological and biochemical analysis. Heart rate increased in group 3 compared to group 1; DXP administration to group 4 did not alleviate this change. In heart tissue samples, MDA levels were decreased significantly in groups 2 and 4 compared to group 3. The levels of GSH in groups 2 and 3 were elevated compared to groups 1 and 2. SOD activity was increased significantly in group 4 compared to group 3. CAT activity for group 4 was increased significantly compared to groups 1 and 3. We found that caspase-9 and caspase-3 activity was increased after application of CLP. Also, DXP treatment decreased the number of caspase-positive cells significantly compared to group 3. DXP appears to be promising for reducing sepsis-related mortality.

The restoration of stomach mucosa in patients with chronic erosive Helicobacter pylori-associated gastritis

Objective — to investigate efficacy of preparation of pro-vitamin B5 and vitamin U in the complex therapy of patients with chronic erosive gastritis, associated with H. pylori, combined with the pancreas excretory insufficiency, established by the morphological parameters.Materials and methods. The study involved 28 patients with H. pylori-associated gastritis combined with the pancreas excretory insufficiency, who were under regular medical check-up and supervision of a family doctor in the Ternopil City Municipal Institution Center of primary health care. The patients were allocated into two groups: the main (n = 1`6) and control (n = 12) groups. All patients received 10-days therapy with pantoprazole (Controloc, Nolpaza, Pantasun or other) in a dose of 40 mg twice a day, amoxicillin in a dose of 1000 mg (or metronidazole in a dose of 500 mg) twice a day, clarithromycin in a dose of 500 mg twice a day; patients of the main group received additional vitamin complex (Doctovit) 2 tablets a day after meals for over 2 months. At the baseline and 2 months after the treatment start, all patients underwent eso-gastroduodenoscopy, urease H. pylori test and biopsy with histological examination on 5 sites.Results. The total dynamics of improvement of the stomach mucosa morphological condition in the 1st group of patients was 0.9 points versus 1.6 points in the 2nd group of patients, which was 17 % and 32 %, respectively (p &lt; 0.05). This testifies the efficacy and proves advisability to use this vitamin complex in the treatment and rehabilitation of patients with chronic gastritis, combined with the pancreas excretory insufficiency.Conclusions. In the complex treatment of patients with chronic gastritis, combined with the pancreas excretory insufficiency, it is advisable to use the complex of pro-vitamin B5 and vitamin U.

Effect of D-Panthenol on Corneal Epithelial Healing after Surface Laser Ablation.

Purpose To study the effect of D-panthenol (provitamin B5) on corneal epithelial healing, in cases of surface laser ablation. Patients and Methods: 45 eyes, of 45 patients undergoing laser surface ablation, received D-panthenol 2% in one eye and artificial tear drops of similar composition not containing D-panthenol in the other eye, postoperatively, for 2 months. Patients were examined daily for 3 days after the procedure. They were then examined weekly for 1 month. An additional examination was made after 2 months. Visual acuity (Log MAR) was assessed at every visit. Rate of healing (% of covered area) and subjective sensation of discomfort (scale 0–5) were assessed in the 1st 3 visits. Residual manifest cylinder (D) (as a parameter of corneal irregularity) and corneal clarity (epithelial and stromal haze) were assessed from week 1 to month 2. Results During the first 3 days, both groups showed statistically nonsignificant (P > 0.05) results. From week 1 to month 2, eyes receiving D-panthenol showed better vision and less residual cylinder (P < 0.05) at week 1. For all other parameters, and at different examinations, both groups showed a statistically nonsignificant (P > 0.05) difference. Still, eyes receiving D-panthenol showed better values at the majority of the parameters tested. Conclusion D-Panthenol effect on corneal epithelial regeneration is of minimal clinical relevance. A different dosage and a larger sample of patients might reveal a statistical relevance. This trial is registered with https://doi.org/10.1186/ISRCTN81441126.

Simultaneous Determination of Dexpanthenol, Lidocaine Hydrochloride, Mepyramine Maleate and their Related Substances by a RP-HPLC Method in Topical Dosage Forms.

The pharmaceutical combination of dexpanthenol (DPA), lidocaine hydrochloride (LIH) and mepyramine maleate (MAM) is used for their anti-allergic, anti-inflammatory, anti-pruritic, anesthetic and antiseptic properties. The present study was aimed to develop and validate a new, first and rapid high performance liquid chromatographic method for simultaneous determination of DPA, LIH and MAM in the presence of their stress-induced degradation products in pharmaceutical gel/fluigel formulations. The chromatographic separation was performed on an Inertsil ODS-3 V, 250 × 4.6 mm (5 μm) column using a gradient mobile phase of an aqueous solution of ammonium acetate (0.01 M) and methanol mixture at gradient flow rates of 1.3 mL/min and 1.5 mL/min with detection at 230 nm. The retention times for DPA, LIH and MAM were ~3.28 min, 11.67 min and 12.99 min, respectively. The method was validated in accordance with International Conference on Harmonisation guidelines. Calibration curves were linear in the ranges of 9-54 μg/mL for MAM and LIH and 30-180 μg/mL for DPA with satisfactory correlation coefficients (R2 > 0.999). The mean % recoveries obtained were found to be 99.9% for MAM, 100.3% for LIH and 99.3% for DPA. Precision % RSD was <2. Robustness results were uniform, there were no marked changes, so method is highly validated. All drugs were subjected to stress conditions and degradation products were separated with acceptable peak tailing (T ≤ 2) and good resolution (Rs > 2). The validated method therefore can be adapted for quality control procedures of the drugs in pharmaceutical dosage forms and their stability studies.

Protective Effect of Dexpanthenol on Ischemia-Reperfusion-Induced Liver Injury

ObjectiveWe aimed to investigate the protective and therapeutic effects of dexpanthenol (DXP) on liver injuries induced by ischemia-reperfusion (IR) in an in vivo rat model. MethodsThirty-two rats were randomly divided into 4 experimental groups (n = 8 in each group: Sham, IR, DXP, and DXP+IR. DXP (500 mg/kg) was intraperitoneally administered for 30 min before 60 min of ischemia, followed by 60 min of reperfusion to rats in the DXP and DXP+IR groups. All rats were euthanized on day 10 to evaluate immunohistopathological changes as well as tissue levels of oxidants and antioxidants. ResultsIR decreased total glutathione (tGSH) levels in IR group when compared to the Sham group. DXP supplementation to IR group significantly ameliorated tGSH levels (P < .05). IR also elevated myeloperoxidase production compared to the Sham group, whereas DXP treatment prevented these hazardous effects. However, plasma superoxidedismutase, catalase, and malondialdehyde levels did not differ between the DXP+IR than the IR rats. Histologic tissue damage was reduced in the DXP and DXP+IR group. ConclusionLiver IR is an inevitable problem during liver surgery. Our results suggested that DXP pretreatment suppressed oxidative stress and increased antioxidant levels in a rat model of liver IR.

Protective and therapeutic effects of dexpanthenol on isoproterenol-induced cardiac damage in rats.

The purpose of the study was to explore the protective and therapeutic effects of dexpanthenol (DEX) on isoproterenol (ISO)-induced cardiac damage. Forty rats were distributed into four groups: group I (Control); group II (ISO); ISO (150 mg/kg/day) was given to rats once a day for 2 consecutive days with an interval of 24 h; group III (DEX+ISO): DEX (250 mg/kg) was applied 30 min before the first ISO administration and continued in the next two days after second ISO administration; group IV (ISO+DEX): After the ISO treatment at 1st and 2nd days, DEX was given at 3rd and 4th days. Rats were monitored for mean arterial blood pressure (BP), heart rate, oxygen saturation (%SO2 ), and electrocardiography (ECG). Heart tissue levels of malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX), reduced glutathione (GSH), total oxidant status (TOS); total antioxidant capacity (TAC), oxidative stress index (OSI), and caspase-3 were determined. BP and SO2 values indicated a significant decrease in the ISO group. Also, T wave negativity was observed in 6 of 10 rats, SOD, CAT, and GPX levels were significantly lower in ISO group than control group. ISO administration increased TOS and OSI levels, whereas DEX treatment significantly reduced these parameters. Also, ISO-induced morphological alterations such as disorganization of cardiomyocytes, loss of myofibrils and cytoplasmic vacuolization whereas these histological damages were significantly decreased in ISO+DEX and DEX+ISO groups when compared to the ISO group. This study implies the cardioprotective effects of DEX on ISO-induced cardiotoxicity.

&lt;i&gt;In-vitro&lt;/i&gt; evaluation of dexpanthenol-loaded nanofiber mats for wound healing

Purpose : To prepare a novel dexpanthenol (DEX)-loaded nanofiber mats for wound healing. Methods : A novel bioactive wound dressing formulation with dexpanthenol was developed by electrospinning method. Poly (lactic-co-glycolic acid), poly (ethylene oxide) and poly (caprolactone) were used as polymers. Morphological features, swelling properties, in-vitro release behavior, and cell viability properties of the formulations were evaluated. Results : Morphological examination of mats confirmed successful formation of the fibers. Swelling of nanofiber mats results was 34.44 ± 1.05, 18.59 ± 2.11, 86.06 ± 3.25 and 44.62 ± 1.75 % for polycaprolactone (PCL), PCL + DEX, poly lactic-co-glycolic acid (PLGA) and PLGA + DEX, respectively, and occurred in a controlled manner. PLGA + DEX formulation has advantage over PCL + DEX and poly (ethylene oxide) (PEO) + DEX due to controlled in-vitro release of DEX. The highest cell viability was afforded by PLGA+DEX formulation. Conclusion : DEX-loaded PLGA nanofiber formulation may be useful as an alternative wound dressing due its suitable mechanical and biological properties. Keywords : Dexpanthenol, Electrospinning, Wound dressing, Polycaprolactone, Poly lactic-co-glycolic acid, Poly (ethylene oxide)

Protective effect of dexpanthenol (vitamin B5) in a rat model of LPS-induced endotoxic shock

Abstract Objectives This study investigated the protective effect of dexpanthenol (DEX) in the septic shock model of rats with biochemical parameters. Methods 12–15 weeks old male 32 Wistar rats has been used for this study. Sepsis was induced by a single intraperitoneal injection of lipopolysaccharide (LPS) (5 mg/kg) and treatment groups received single intraperitoneal injection of DEX (500 mg/kg) just 30-min before. The blood and tissue samples were obtained 16 h later of LPS intervention under the ketamine and xylasine (50 and 5 mg/kg, respectively) anesthesia. Results Giving alone DEX did not alter any physiologic levels of biochemical markers. Induction of sepsis resulted in a marked increase in ALT, AST, urea, creatinine, lactate, procalcitonin, TNF-α, IL-1β levels to show the tissue damage. In all serum parameters, liver’s GSH, CAT levels and kidney’s CAT, GSH, MDA and NO levels have ameliorated by DEX treatment in sepsis group. Conclusion Along with the standard therapy of sepsis, DEX can be used as a safe way of restoring (anti)oxidant status of kidney and liver tissues. It can be effective to control cytokine pathway, to decrease procalcitonin and regulate the metabolic process of sepsis, such as lactate.

Level of Glutathione After Administration of Provitamin B5 to Plasmodium berghei Infected BALB/c Mice

Introduction: Malaria was one of the health problem in developing country including Indonesia. Three hundred to five hundred million people suffered from malaria, and causing more than one million death annually. The objective of this study was to find out erythrocyte GSH level and compared to parasitemiapercentage due to provitamin B5 administration to Plasmodium berghei infected BALB/c mice.&#x0D; Method: 32 males BALB/c mice were infected by 200 µL blood which contain 106 Plasmodium berghei intraperitoneally. Then, samples were separated randomly into four groups, namely control group, group P1, group P2 and group P3. As soon as parasitemia reached 1 – 5 % the treatment should begin. Control group was administered aquades by gavage, group P1 administered 0.14 g/kgBW provitamin B5, group P2 administered 1.4 g/kgBW provitamin B5, group P3 administered 2.8 g/kgBW provitamin B5, all were treated by gavage. Provitamin B5 treatment followed the protocol in the 4-days suppressive test of blood schizontocidal action. On the fourth day the mice were terminated and blood samples from intracardiac was taken. Thus, blood samples conducted erythrocyte GSH measurement using Anderson method.&#x0D; Result: The results were analysed by using Anova α = 0.05, and continued by LSD if the result showed a significant difference. Erythrocyte GSH level decreased in all groups. Erythrocyte GSH in group P3 increased significant compared to group P1 ( P&lt;0.05). Parasitemia measurement using Percent method showed a significant decrease in group P1 ( 48 % ) and in group P2 ( 62 % ) (P&lt;0.05), while in group P3 no significant difference from control group.&#x0D; Conclusion: Erythrocyte GSH level decreased in administration of Provitamin B5 by increasing dosage, in contrast to parasitemia percentage.

Vitamini u kozmetičkim proizvodima - savremeni stavovi i praksa

Vitamins A, E, C, B3 and provitamin B5 (panthenol), and their numerous derivatives are most widely used in cosmetic products. Cosmetic retinoids (retinol, retinaldehyde, and retinyl esters) have been used for years in cosmetic treatments of (photo)aged skin - brightened hyperpigmentation, reducing roughness of the skin and fine lines and wrinkles. Using the new vitamin A derivative, retinyl retinoate, is considered to overcome the problems associated with instability and undesirable effects of retinol. Hydroxypinacolone retinoate is a new anti-aging ingredient with the efficacy of retinol, but with significantly less irritant potential. Vitamin E (tocopherol) slows down the formation of wrinkles and alleviates the existing ones. Because of the pronounced instability, vitamin E is used in the form of esters, usually as tocopheryl acetate. The novelty on the market is a water-soluble derivative of vitamin E - sodium tocopheryl phosphate. Vitamin C also has positive effects on the skin. However, free vitamin C (ascorbic acid) is very unstable and easily loses its activity. Newer derivatives of vitamin C, which may be water-soluble, amphiphilic or liposoluble, have improved stability compared to the ascorbic acid. They are used in skin care and skin lightening products. Panthenol, which is a very good moisturizer, has been used in various cosmetic products for skin and hair for many years. Vitamin B3 (niacinamide) is commonly used in facial day creams, as skin conditioner. Vitamins in cosmetic products can be considered as safe cosmetic active ingredients, when used in appropriate chemical forms and in allowed concentrations.

Electrochemical oxidation of provitamin B5, d-panthenol and its analysis in spiked human urine

The behavior of biomolecules and the advancements in the electrochemical techniques play a tremendous role in the development of voltammetric sensors. Redox reactions of biologically active molecules can be studied by using different voltammetry techniques which guide us to understand the metabolic fact of the targeted drug. In the present work, we describe the electrochemical oxidation of d-panthenol (DP) by using a versatile glassy carbon electrode (GCE). Experimental section was carried out by using cyclic voltammetry and square wave voltammetry. Under the optimized conditions (pH 4.2), the square wave voltammetric peak current of d-panthenol increased linearly with its concentration. The detection limit was found to be 5.0 × 10−7 M. The number of protons and electrons involved in the oxidation process were calculated. The heterogeneous rate constant was found to be (3.67 × 103 s−1). The method detects the trace level of the analyte with low detection limit which imparts the development of a sensor for selective and sensitive determination of d-panthenol. This sensor was successfully applied to determine the d-panthenol in spiked urine samples.

Improvement of postoperative care in women with genital prolapse

У дослідженні здійснено пошук шляхів оптимізації ведення післяопераційного періоду у жінок із пролапсом геніталій за рахунок інтенсифікації трофічних, регенеративних процесів у тканинах і зниження частоти інфекційних ускладнень. Шляхом обстеження 57 жінок із пролапсом геніталій показано, що додаткове місцеве застосування комбінованого препарату, який містить хлоргексидин і декспантенол (n = 30), покращує клінічну ефективність терапії післяопераційного періоду в порівнянні з традиційним лікуванням (n = 27).

Electrochemical investigations on pitting corrosion inhibition of mild steel by provitamin B5 in circulating cooling water

The inhibition effect of provitamin B5 on pitting corrosion of mild steel in circulating cooling water containing aggressive anions was investigated by potentiodynamic anodic polarization, chronoamperometric and scan electron microscope (SEM) analysis. The results show that provitamin B5 has a significant inhibiting effect on the pitting corrosion of mild steel. The presence of provitamin B5 shifted the pitting potential (Epit) to more noble value and decreased the passive current density (jpass). The efficiency of provitamin B5 increased by increasing its concentration and decreased by increasing solution temperature and flow rate. Chronoamperometry measurements showed that nucleation of pit takes place after the incubation time (ti). The rate of pit initiation (1/ti) decrease by increasing provitamin B5 concentration. Activation energies values for the pitting corrosion process in the presence of provitamin B5 were calculated and discussed.

Development and validation of a supercritical fluid chromatography method for the direct determination of enantiomeric purity of provitamin B5 in cosmetic formulations with mass spectrometric detection

A rapid and efficient chiral supercritical fluid chromatography (SFC) method has been developed for the quantitative determination of panthenol enantiomers in cosmetic formulations (cream, lotion, wipe, and exfoliant). Indeed, the pharmacological effect only depends on the D form (Dexpanthenol) thus accurate measurement of its enantiomeric purity in formulated cosmetic products is of interest. The samples were prepared with liquid–liquid extraction followed by solid-phase extraction on Adsorbex amino cartridges. After testing several enantioselective columns in an attempt at reversing the elution order to have the minor enantiomer eluted first, the best separation of enantiomers and internal standard (N-acetyl-l-alanine) was achieved on a 3μm-amylose-type immobilized polysaccharide chiral stationary phase (Chiralpak IA) in less than 6min with a simple mobile phase comprising carbon dioxide and 11% methanol pumped at 2.3mL/min, 25°C and 150bar backpressure. Supercritical fluid chromatography coupled to both an optical diode-array detector and a user-friendly single-quadrupole mass spectrometer (Waters QDa) equipped with electrospray ionization source has been used. The on-line coupling ensures the technique to be more informative and improves detection sensitivity, as underivatized panthenol has a poor UV absorption. The limit of quantification (LOQ) achieved with single-ion recording was 0.5μg/mL. The method was validated in terms of linearity, precision and accuracy and satisfactory results were obtained.

Effects of dexpanthenol and N-acetylcysteine pretreatment in rats before renal ischemia/reperfusion injury

Background: We investigated the anti-inflammatory and protective effects of concomitant use of dexpanthenol (DXP) and N-acetylcysteine (NAC) induced ischemia/reperfusion (I/R) injury of kidney. Methods: Forty rats were randomly divided into 5 groups. In all groups except for Group 1(Sham), renal arteries bilaterally occluded with vascular clamp for IR injury. Group 1(Sham), received a single dose of 10 mL/kg isotonic saline daily by intraperitoneal (IP) injection for three days. Group 2(IR), received a single dose of 10 mL/kg isotonic saline daily by IP injection for three days. Group 3(IR + NAC), received 300 mg/kg NAC daily by IP injection for three days. Group 4(IR + DXP), received 500 mg/kg DXP daily by IP injection for three days. Group 5(IR + NAC + DXP), received 500 mg/kg DXP and 300 mg/kg NAC daily by IP injection for three days. Serum urea (BUN), creatinine (Cr) and neutrophil gelatinase-associated lipocalin (NGAL, lipocalin 2, siderocalin) levels were measured as kidney function tests. TNF-α levels were measured as inflammatory marker. Tissue sections were evaluated histopathologically under light microscopy. Results: IR + NAC + DXP group received both NAC and DXP before induction of renal I/R and as the biochemical and histopathological data revealed the results of the IR + NAC + DXP group and sham group were similar. Biochemically and histopathologically, combined use of NAC and DXP has better results when each of them used alone. Conclusion: We concluded that concomitant use of DXP and NAC plays a major role against I/R injury and may be useful in acute treatment of I/R induced renal failure.

The effects of dexpanthenol in streptozotocin-induced diabetic rats: histological, histochemical and immunological evidences.

This study was designed to investigate the effects of Dexpanthenol (Dxp) on liver and pancreas histology and cytokine levels in streptozotocine (STZ)-induced diabetic rats. Twenty-four Wistar albino male rats were divided into four groups: control, Dxp, STZ-induced diabetic (STZ) and diabetic treatment with Dexpanthenol (STZ-Dxp) groups. Experimental diabetes was induced by single dose STZ (50 mg/kg) intraperitoneally (i.p.). After administration of STZ, the STZ-Dxp group began to receive a 300 mg/kg/day i.p. dose of Dxp for 6 weeks. Liver and pancreas tissues of the control group were in normal morphology. Liver tissue of STZ group showed vacuolisation of hepatocytes in the liver parenchyma with enlargement of sinusoidal spaces and increasing amounts of connective tissue in the portal area. Pancreatic section of STZ group displayed β-cells with of cytoplasmic mass, reduction of islet size, and atrophy. The STZ-Dxp group that received Dxp treatment exhibit partially normal hepatic parenchyma. Histochemical examinations revealed that the diabetes-induced glycogen depletion markedly improved with the Dxp treatment (p⟨0.001). The severity of degenerative alteration was lessened by Dxp supplementation in the STZ-Dxp group. Induction of STZ presented a significant increase both in interleukin-1α (IL-1α) (p=0.033) and monocyte chemotactic protein-1 (MCP-1) (p=0.011) levels, when compared with the control rats. DXP-treated diabetic rats' IL-1α and MCP-1 levels were similar to control value. This evidence suggests that Dxp is effective in reducing STZ-induced, diabetic-related complications and may be beneficial for the treatment of diabetic patients.

Protective effect of vitamin B5 (dexpanthenol) on cardiovascular damage induced by streptozocin in rats.

This study investigated whether Dexpanthenol (DEX) improves diabetic cardiovascular function and cardiac performance by regulating total oxidant and antioxidant status. Diabetes was induced by a single intraperitoneal injection of Streptozocin (50 mg/kg in 1 ml of saline) and treatment groups received DEX (300 mg/kg/day) for 6 weeks. Endothelium (in)dependent relaxation responses were assessed in thoracic aortic rings and coronary vasculature together with alpha receptor and voltage dependant contractile responses of aorta. Myocardial contractility has been recorded by an intra ventricular latex balloon. Total oxidant and antioxidant status were measured from the serum samples. Induction of diabetes resulted in an apparent body weight loss, high blood glucose, endothelial dysfunction and increased serum oxidant status. DEX supplementation restored the endothelial dysfunction, antioxidant status and body weight whereas decreasing blood glucose level. Along with the standard therapy of diabetes, DEX can be used as a safe and economical way of adjuvant therapy to diminish the burden of the disease (Tab. 3, Fig. 3, Ref. 30).