The ameliorative effects of ceftriaxone and vitamin E against cisplatin-induced nephrotoxicity

Abdel-Daim MM, Aleya L, El-Bialy BE, Abushouk AI, Alkahtani S, Alarifi S, Alkahtane AA, AlBasher G, Ali D, Almeer RS, Al-Sultan NK, Alghamdi J, Alahmari A, Bungau SG

Environ Sci Pollut Res Int. 2019 Mar 30. doi: 10.1007/s11356-019-04801-2. [Epub ahead of print]

Abstract

Nephrotoxicity is a common adverse effect of treatment with cisplatin (CDDP). This study was performed to evaluate the antioxidant and nephroprotective efficacy of ceftriaxone (CTX) and vitamin E (Vit.E), alone and in combination against CDDP-induced acute renal injury. Fifty-six male albino rats were equally divided into seven groups, receiving (I) normal saline, (II) CTX (100 mg/kg, intraperitoneal [i.p] injection), (III) Vit.E (100 mg/kg orally), (IV) CDDP (5 mg/kg i.p injection), (V) CDDP plus CTX, (VI) CDDP plus Vit.E, and (VII) CDDP plus CTX in combination with Vit.E. All treatments were administered daily for 10 days except CDDP, which was given as a single dose at the sixth day of the study. Compared to normal control rats, CDDP-injected rats showed significantly (p < 0.05) higher serum levels of renal injury biomarkers (uric acid, urea, and creatinine) and tumor necrosis factor-α (TNF-α), as well as increased renal tissue concentrations of malondialdehyde, nitric oxide, and TNF-α. Moreover, CDDP administration was associated with significantly lower (p < 0.05) renal tissue levels of reduced glutathione and activities of endogenous antioxidant enzymes (glutathione peroxidase, superoxide dismutase, and catalase) and total antioxidant capacity. All these alterations were significantly ameliorated in CDDP-injected rats, receiving CTX and/or Vit.E, compared to rats receiving CDDP alone. Interestingly, the antioxidant and anti-inflammatory effects were more marked in the CTX-Vit.E combination group, compared to groups receiving either drug alone. In conclusion, CTX and Vit.E (especially in combination) could counteract the nephrotoxic effect of CDDP, probably through their antioxidant activities.

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A BEGINNER’S GUIDE TO VITAMIN E

Many of us have heard of vitamin E and know that it’s beneficial for the skin. You probably already even have a few products lying around that contains vitamin E as a key ingredient, or taken it as a supplement for overall skin health. After all, it’s one of those ingredients that have been around for as long as you can remember and frequently outshone by other trendier skincare buzzwords. But do you know how it actually works and what kind of skin types it is best suited for? Here, all the fundamentals you need to know about vitamin E.

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This Is Why You See Tocotrienols Popping Up In *All* The Wellness Spots

Tocotrienols, or “Tocos” as they’re affectionately known, have been around for a while, but more recently, they’ve become increasingly popular thanks to the growing alternative wellness market. Like turmeric and medicinal mushrooms, Tocotrienols can be found in powdered form and can be plucked off the shelf to adorn your lattes and smoothie bowls.

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High Vitamin E Cuts Cataract Risk By Half

A study using experimental animals found that vitamin E — as alpha-tocopherol, the most common form sold — protected the animals from radiation-induced cataracts.In a human study, 175 people with cataracts were compared to 175 without cataracts, and researchers found that those with the highest vitamin E blood levels had a 50 percent lower risk of developing a cataract.

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Effects of vitamin E supplementation on the risk and progression of AD: a systematic review and meta-analysis

Wang W, Li J, Zhang H, Wang X, Zhang X

Nutr Neurosci. 2019 Mar 22:1-10. doi: 10.1080/1028415X.2019.1585506. [Epub ahead of print]

Abstract

OBJECTIVE:

The association between vitamin E supplementation and Alzheimer’s disease (AD) was controversial because of conflicting data in the literature. This study was designed to systematically evaluate evidence about the efficacy of vitamin E supplementation not only on the risk but also on the progression of AD.

DESIGN:

Five electronic databases were searched for studies published up to June 2017. Articles reporting vitamin E supplementation and AD were included, and the random-effect model was performed for the meta-analysis about the relationship between vitamin Esupplementation and AD.

RESULTS:

Five cohort studies and three randomized controlled trial (RCT) studies (total n = 14,262) involving 1313 cases about vitamin Eeffects on the risk of AD and 244 cases about effects on progression of AD. The pooled RR for vitamin E supplemental and risk of AD was 0.81 [95% CI: 0.50-1.33, I2 = 69.2%]. Suitable data could not be extracted to do meta-analysis as there was no unified standard of outcome measure for studies on AD progression. We carefully analyzed and evaluated the authenticity and accuracy of every single trial, while reliable evidence could not be obtained.

CONCLUSIONS:

From what we do, neither the synthetic data on risk of AD nor the critical review on progression of AD could provide enough evidence on our research. Thus, we cannot draw a specific conclusion on the association or correlation between Vitamin E and AD.

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The Molecular Mechanism of Vitamin E as a Bone-Protecting Agent: A Review on Current Evidence

Wong SK, Mohamad NV, Ibrahim N', Chin KY, Shuid AN, Ima-Nirwana S

Int J Mol Sci. 2019 Mar 22;20(6). pii: E1453. doi: 10.3390/ijms20061453.

Abstract

Bone remodelling is a tightly-coordinated and lifelong process of replacing old damaged bone with newly-synthesized healthy bone. In the bone remodelling cycle, bone resorption is coupled with bone formation to maintain the bone volume and microarchitecture. This process is a result of communication between bone cells (osteoclasts, osteoblasts, and osteocytes) with paracrine and endocrine regulators, such as cytokines, reactive oxygen species, growth factors, and hormones. The essential signalling pathways responsible for osteoclastic bone resorption and osteoblastic bone formation include the receptor activator of nuclear factor kappa-B (RANK)/receptor activator of nuclear factor kappa-B ligand (RANKL)/osteoprotegerin (OPG), Wnt/β-catenin, and oxidative stress signalling. The imbalance between bone formation and degradation, in favour of resorption, leads to the occurrence of osteoporosis. Intriguingly, vitamin E has been extensively reported for its anti-osteoporotic properties using various male and female animal models. Thus, understanding the underlying cellular and molecular mechanisms contributing to the skeletal action of vitamin E is vital to promote its use as a potential bone-protecting agent. This review aims to summarize the current evidence elucidating the molecular actions of vitamin E in regulating the bone remodelling cycle.

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Will vitamin E be the hope of patients with NASH and advanced fibrosis? – the reliability is worth discussing

Jian H, Ai-Min L

Hepatology. 2019 Mar 18. doi: 10.1002/hep.30603. [Epub ahead of print]

Abstract

According to the article conducted by Eduardo et al.(1), the non-transplant survival rate of nonalcoholic steatohepatitis (NASH) patients with bridging necrosis and cirrhosis, which is a subtype of non-alcoholic fatty liver disease (NAFLD), was found to be improved by vitamin E, who will reduce the occurrence of liver decompensation. However, combined with the literature we have reviewed and the clinical experience we have achieved, two important factors that may affect the study results will be proposed in the article. This article is protected by copyright. All rights reserved.

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Effects of vitamin A and vitamin E on attenuation of titanium dioxide nanoparticles-induced toxicity in the liver of male Wistar rats

Moradi A, Ziamajidi N, Ghafourikhosroshahi A, Abbasalipourkabir R

Mol Biol Rep. 2019 Mar 18. doi: 10.1007/s11033-019-04752-4. [Epub ahead of print]

Abstract

The increasing application of titanium dioxide nanoparticles (NTiO2) in life and the toxicity potential of these nanoparticles have raised concerns about their detrimental effects on human health. This study was conducted to investigate the hepatoprotective effects of vitamin Eand vitamin A against hepatotoxicity induced by NTiO2 in rats. Thirty-six male Wistar rats were randomly divided into six groups of six rats each. Intoxicated group received 300 mg/kg NTiO2 for two weeks by gavage. Groups treated with vitamin E (100 IU/kg), vitamin A (100 IU/kg) and mixture of these vitamins were orally administered for 3 weeks (started 7 days before NTiO2 administration). In order to investigate the redox changes, total antioxidant capacity, total oxidant status, and lipid peroxidation were determined in liver tissue as well as activity of antioxidant enzymes including superoxide dismutase, glutathione peroxidase, and catalase. In addition, inflammatory responses were assessed by measuring the expression of NF-κB (mRNA) and TNF-α (mRNA and protein). Histopathological analysis and measurement of liver enzymes (ALP, ALT, AST, and LDH in serum) were also done to determine hepatic injury. In liver, NTiO2 caused hepatic injury, redox perturbation, and reduction of antioxidant enzymes and elevation of inflammatory mediators, significantly. However, treatment with vitamins was able to significantly ameliorate these alterations. This study highlights the antioxidant and anti-inflammatory properties of vitamins A and E against toxicity of NTiO2 and poses the use of these vitamins to mitigate the toxic effects of this nanoparticles in NTiO2-contained products.

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The Role of Tocotrienol in Preventing Male Osteoporosis-A Review of Current Evidence

Chin KY, Ima-Nirwana S

Int J Mol Sci. 2019 Mar 18;20(6). pii: E1355. doi: 10.3390/ijms20061355.

Abstract

Male osteoporosis is a significant but undetermined healthcare problem. Men suffer from a higher mortality rate post-fracture than women and they are marginalized in osteoporosis treatment. The current prophylactic agents for osteoporosis are limited. Functional food components such as tocotrienol may be an alternative option for osteoporosis prevention in men. This paper aims to review the current evidence regarding the skeletal effects of tocotrienol in animal models of male osteoporosis and its potential antiosteoporotic mechanism. The efficacy of tocotrienol of various sources (single isoform, palm and annatto vitamin E mixture) had been tested in animal models of bone loss induced by testosterone deficiency (orchidectomy and buserelin), metabolic syndrome, nicotine, alcoholism, and glucocorticoid. The treated animals showed improvements ranging from bone microstructural indices, histomorphometric indices, calcium content, and mechanical strength. The bone-sparing effects of tocotrienol may be exerted through its antioxidant, anti-inflammatory, and mevalonate-suppressive pathways. However, information pertaining to its mechanism of actions is superficial and warrants further studies. As a conclusion, tocotrienol could serve as a functional food component to prevent male osteoporosis, but its application requires validation from a clinical trial in men.

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Effect of vitamin-E integration on delivery of prostaglandin analogs from therapeutic lenses

Sekar P, Chauhan A

J Colloid Interface Sci. 2019 Mar 15;539:457-467. doi: 10.1016/j.jcis.2018.12.036. Epub 2018 Dec 17.

Abstract

HYPOTHESIS:

Glaucoma is effectively treated by prostaglandin analogs. Low corneal bioavailability (<5%) of daily-instilled prostaglandin drops complemented by frequent application results in low patient compliance (<50%). One alternative route is ocular delivery via commercial hydrogel contact lens. Commercial lenses, however, release prostaglandins rapidly in a few hours owing to their small molecular size, resulting in toxic side-effects. Here, the feasibility of sustained prostaglandin, namely bimatoprost and latanoprost delivery by vitamin-Eintegrated polymeric hydrogels is explored. Inclusion of these barriers is expected to augment transport resistance and influence delivery rates.

EXPERIMENTS:

Lens immersion in vitamin-E concentrated ethanol is done to enable formation of nano-barrier depots.

FINDINGS:

Pilot in vitro studies indicate that ACUVUE® OASYS® and ACUVUE® TruEye™ lenses loaded with ∼0.2 g of vitamin-E/g of hydrogel effectively prolong bimatoprost dynamics by 10-40-fold, delivering therapeutic dosages for >10 days. Incorporation of vitamin-E into the lenses retains visible light transmission and other properties. Further, vitamin-E integration does not influence latanoprost transport. An in vivo model involving coupled mass transport in the lens and post-lens tear film (POLTF) domains predicts >50% corneal bioavailability of bimatoprost delivered via modified lenses.

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