-
Animals : An Open Access Journal From... Jul 2023The objective of this study was to investigate the effects of dietary supplementation with different types of potassium and magnesium on the reproductive performance,...
Dietary Supplementation with Different Types of Potassium and Magnesium during Late Gestation and Lactation Modulates the Reproductive Performance, Antioxidant Capacity, and Immune Function of Sows.
The objective of this study was to investigate the effects of dietary supplementation with different types of potassium and magnesium on the reproductive performance, antioxidant capacity, and immunity of sows. Forty-five Landrace × Yorkshire sows at the late gestation stage (85 d) were randomly assigned to three groups (n = 15). Sows in the control group (CON), potassium chloride and magnesium sulfate group (PM), and potassium-magnesium sulfate group (PMS) were fed with a basal diet, a basal diet supplemented with magnesium sulfate (0.20%) and potassium chloride (0.15%), or a basal diet supplemented with potassium-magnesium sulfate (0.45%), respectively. The results showed that dietary supplementation with PMS did not yield significant effects on the reproductive performance compared with the CON group ( > 0.05). However, it significantly elevated the level of insulin-like growth factor 1 (IGF-1) in plasma and immunoglobulin A (IgA) in colostrum ( < 0.05). Furthermore, PMS significantly augmented the activities of catalase (CAT) and superoxide dismutase (SOD) while reducing the levels of malondialdehyde (MDA) in comparison to the CON group ( < 0.05). Compared with the PM group, the PMS group significantly reduced the incidence rate of intrauterine growth restriction (IUGR) ( < 0.05) and significantly decreased the concentration of the proinflammatory cytokine (TNF-α) level in plasma ( < 0.05). These results indicated that dietary supplementation with PMS during late gestation could enhance sows' antioxidant capacity and the IgA level in colostrum. These findings will provide a theoretical reference for the use of magnesium and potassium in sow production to improve sows' health.
PubMed: 37443982
DOI: 10.3390/ani13132183 -
Animals : An Open Access Journal From... Nov 2023A wide variety of substances have been used to anaesthetise invertebrates, but many are not anaesthetics and merely incapacitate animals rather than preventing pain. In...
A wide variety of substances have been used to anaesthetise invertebrates, but many are not anaesthetics and merely incapacitate animals rather than preventing pain. In essence, the role of an ideal general anaesthetic is to act as a muscle relaxant, an analgesic, an anaesthetic, and an amnesic. To achieve all these properties with a single substance is difficult, and various adjuvants usually need to be administered, resulting in a cocktail of drugs. In a clinical setting, the vast majority of patients are unaware of surgery being carried out and have no memory of it, so they can claim to have felt no pain, but this is much more difficult to demonstrate in invertebrates. Here, we show that 1% MgCl a muscle relaxant is a useful adjuvant for the clinical anaesthetic isoflurane on when applied alone in seawater for 10 min before the clinical anaesthetic. After this, full anaesthesia can be achieved in 5 min using 1% isoflurane insufflated into the saline still containing MgCl. Full recovery takes place rapidly in about 10 to 15 min. The depth of anaesthesia was monitored using changes in respiratory rate, chromatophore pattern, and withdrawal movements of the arms and siphon. This methodology reduces stress on the animal and minimises the quantity of anaesthetic used.
PubMed: 38003196
DOI: 10.3390/ani13223579 -
Antioxidants (Basel, Switzerland) Dec 2023Anesthesia serves as an effective method to mitigate the stress response in aquatic animals during aquaculture and product transportation. In this study, we assessed the...
Anesthesia serves as an effective method to mitigate the stress response in aquatic animals during aquaculture and product transportation. In this study, we assessed the anesthetic efficacy of clove oil, tricaine methane-sulfonate (MS-222), ethanol, and magnesium chloride by anesthesia duration, recovery time, 24-hour survival rate, and the behavior of mud crabs (). Additionally, the optimal anesthetic concentration for varying body weights of mud crabs was also investigated. The results revealed that clove oil emerged as the optimal anesthetic for mud crabs, with a 24-hour survival rate surpassing those observed in MS-222 and magnesium chloride treatments. Ethanol caused amputation and hyperactivity in mud crabs. Regression analyses between the optimal anesthetic concentration of clove oil and the weight categories of 0.03-27.50 g and 27.50-399.73 g for mud crabs yielded the following equations: y = 0.0036 x - 0.1629 x + 1.7314 x + 4.085 (R = 0.7115) and y = 0.0437 x + 2.9461 (R = 0.9549). Clove oil exhibited no significant impact on serum cortisol, glucose, lactate content, aspartate aminotransferase (AST), alanine aminotransferase (ALT) activities, or superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), and malondialdehyde (MDA) levels in mud crabs across different treatment groups. Anesthesia induced by clove oil in mud crabs resulted in an increase in inhibitory neurotransmitters such as glycine. However, the recovery from anesthesia was associated with elevated levels of the excitatory neurotransmitters L-aspartic acid and glutamate. In conclusion, clove oil proves to be a safe and optimal anesthetic agent for mud crabs, exerting no physiological stress on the species.
PubMed: 38136243
DOI: 10.3390/antiox12122124 -
Cureus Nov 2023Alzheimer's disease (AD) is a widespread neurodegenerative condition with complex causes and a significant global impact, particularly among the elderly. This brief...
INTRODUCTION
Alzheimer's disease (AD) is a widespread neurodegenerative condition with complex causes and a significant global impact, particularly among the elderly. This brief introduction emphasizes AD's hallmark features and the urgent public health concern it poses, with numbers on the rise. It also highlights the potential of statins and magnesium L-threonate as a combined therapeutic approach to prevent AD and mitigate its underlying pathological features. The study's goal is to shed light on these promising interventions in a rat model induced by aluminum chloride (AlCl3).
MATERIALS AND METHODS
A total of 30 aged female Wistar rats were divided into five groups (n=6/group). The vehicle control group received normal saline orally (p.o.).The model control group received AlCl3(4.2 mg/kg/day intraperitoneal (i.p.)). The standard-treated group received rivastigmine (1 mg/kg/day p.o.), and the atorvastatin-treated and atorvastatin with magnesium L-threonate-treated groups received atorvastatin (20 mg/kg/day p.o.) and atorvastatin (20 mg/kg/day) with magnesium L-threonate (604 mg/kg/day ), respectively. Cognitive functions such as radial arm maze, elevated plus maze (EPM), passive shock avoidance test, and open-field test (OFT) were performed at weekly intervals up to 28 days. After completion of the study on the 29 day, all animals were sacrificed, and the brain was used for estimation of AchE enzyme activity, oxidative stress parameters, and histopathological analysis.
RESULT
At the end of the fourth week, administration of atorvastatin and atorvastatin with magnesium L-threonate resulted in a decreased average time taken to reach the correct arm, reduced transfer latency (TL) in the EPM, shortened latency to reach the shock-free zone (SFZ), and an increase in rearing and counts by locomotion activity in the OFT. It also demonstrated improved anti-cholinesterase activity and suppressed oxidative stress, as indicated by a decrease in nitric oxide (NO) levels and an increase in superoxide dismutase (SOD) and catalase levels. Additionally, it led to reductions in brain changes observed in histopathological analysis.
CONCLUSION
Atorvastatin with magnesium L-threonate provides a better beneficial protective effect against AD than atorvastatin alone. This combination can be a first choice for patients who are already taking atorvastatin in the early stages of AD.
PubMed: 38074017
DOI: 10.7759/cureus.48400 -
International Journal of General... 2023Low volume change and minimal trauma observed during angiography are the reason why physicians often overlook any changes affecting pre-operative electrolytes levels...
BACKGROUND
Low volume change and minimal trauma observed during angiography are the reason why physicians often overlook any changes affecting pre-operative electrolytes levels after coronary intervention. However, few studies have addressed the issue of electrolyte changes after the coronary intervention. Therefore, our study investigates coronary angiography's effect on electrolytes and provides the quick identification of groups more prone to electrolyte changes.
METHODS
From the department of cardiology of the second affiliated hospital of Shandong's first medical university, 374 patients undergoing coronary angiography were selected. Pre-intervention and post-intervention serums, sodium (Na), potassium (K), chloride (Cl), magnesium (Mg) and renal function were analyzed. The correlation between influential factors was also assessed. The association of hypokalemia with short-major adverse cardiac events (MACE) and arrhythmia was evaluated.
RESULTS
Among the 374 subjects including 264 patients who had a simple angiography and 110 patients who received coronary artery interventional therapy. A decrease in potassium levels was found in 81.8% of the patients, and post-interventional hypokalemia was observed in 15.0%. After the intervention, the hypokalemia among males was 2.18 times than that of females, and the pre-operative serum potassium level was 3.5mmol/L≤K<4.0mmol/L and was 2.09 times than that of K≥4.0 mmol/L, but was not associated with age and either simple coronary angiography or PCI (percutaneous coronary intervention). Hypernatremia was also prevalent in males under 60 years and with pre-operative hypernatremia. Significant variations were found between hypokalemia and influential factors like hypertension, diabetes, and gastrointestinal disease. We also found that there was no obvious correlation between hypokalemia and recurrent angina, heart failure and death, but significantly increased the risk of some arrhythmias.
CONCLUSION
Male patients are more likely to suffer from electrolyte disturbance after coronary intervention. There is a need to emphasize monitoring and managing electrolyte changes to prevent severe complications in the peri-operative period.
PubMed: 37868813
DOI: 10.2147/IJGM.S430510 -
Molecular Therapy. Methods & Clinical... Dec 2023Recombinant adeno-associated viral vector (rAAV) mediated gene therapy is gaining traction in treating genetic disorders. Current rAAV production systems yield a mixture...
Recombinant adeno-associated viral vector (rAAV) mediated gene therapy is gaining traction in treating genetic disorders. Current rAAV production systems yield a mixture of capsids largely devoid of the transgene (empty capsid) compared with the desired therapeutic product (full capsid). Anion exchange chromatography (AEX) is an attractive method for separating empty and full AAV capsids because of its scalability. Resin types and buffer composition are key considerations for AEX and must support capsid stability to be suitable for downstream processing. We examined the impact of binding durations (0-8 h) using various binding ionic strengths (15-75 mM), pH (7.5-9.0), resin chemistry (POROS XQ, POROS HQ, POROS I, and BIA QA monolith), and proprietary Q resins with different ligand densities for effects on capsid stability. Empty capsids were altered upon extended binding, leading to retention time shifts and loss of resolution between empty and full capsids. Viral capsid protein analysis reveals that full capsids have more viral capsid protein 3 (VP3) proteins than empty capsids. Analytical hydrophilic liquid chromatography showed that empty capsid retention time shift is accompanied by changes to the empty capsid's native VP3 protein. Among the potential stabilizing additives considered, magnesium chloride was the most effective at reducing negative impacts caused by extended binding.
PubMed: 37868210
DOI: 10.1016/j.omtm.2023.101112 -
Bioengineering (Basel, Switzerland) Jul 2023Converting more CO absorbed by plant photosynthesis into biomass-activated carbon effectively reduces carbon emissions. In this study, we used a one-step preparation of...
Converting more CO absorbed by plant photosynthesis into biomass-activated carbon effectively reduces carbon emissions. In this study, we used a one-step preparation of biomass-activated carbon loaded with MgO nanoparticles to investigate the effect of Mg loading on the catalytic pyrolysis process. The influences of magnesium loading on biochar yield and fixed carbon production were assessed. The addition of 1% Mg weakened the carbonyl C=O, inhibited the dehydroxylation reaction, enhanced the C-H signal strength, and the formation of MgO inhibited the weaker- bound substituent breakage. Additionally, the addition of magnesium altered the morphological features and chemical composition of the biochar material. It also increased the activated carbon mesoporosity by 3.94%, biochar yield by 5.55%, and fixed carbon yield by 12.14%. The addition of 1% Mg increased the adsorption capacity of the activated carbon to potassium dichromate, acid magenta, methylene blue, and tetracycline effluents by 8.71 mg, 37.15 mg, 117.68 mg, and 3.53 mg, respectively. The results showed that MgCl played a significant role in promoting the thermal degradation of biomass and improving the solid yield and adsorption performance of activated carbon.
PubMed: 37508863
DOI: 10.3390/bioengineering10070836 -
Plants (Basel, Switzerland) May 2024The current investigation aims to underline the impact of salicylic acid or calcium chloride seed pre-treatments on mineral status and oxidative stress markers, namely...
Salicylic Acid and Calcium Chloride Seed Priming: A Prominent Frontier in Inducing Mineral Nutrition Balance and Antioxidant System Capacity to Enhance the Tolerance of Barley Plants to Salinity.
The current investigation aims to underline the impact of salicylic acid or calcium chloride seed pre-treatments on mineral status and oxidative stress markers, namely levels of electrolyte leakage (EL) and lipid peroxidation levels, measured as thiobarbituric reactive substances (TBARS), and the activity of some antioxidant enzymes in roots and leaves of plants in two barley species grown under various salt treatments. Overall, our results revealed that salinity inhibits essential nutrient absorption such as iron, calcium, magnesium and potassium and stimulates the absorption of sodium. Also, this environmental constraint induced oxidative stress in plants in comparison with the control conditions. This state of oxidative stress is reflected by an increase in TBARS content as well as the stimulation of EL values. In addition, salinity induced disturbances in the activity of antioxidant enzymes, which were mainly dependent on the applied salt concentration and the species. In addition, maintained high antioxidant enzyme activity and low levels of oxidative stress parameters, which reinforces its salt-tolerant character. Importantly, salicylic acid or calcium chloride seed priming alleviated the mineral imbalance and the oxidative damage induced by salinity. Moreover, seed priming improves iron, calcium magnesium and potassium content and limitsthe accumulation of sodium. Also, both treatments not only decrease TBARS levels and limit EL, but they also stimulate the antioxidant enzyme activities in the leaves and roots of the stressed plants as compared with stressed plants grown from non-primed seeds. Interestingly, the beneficial effects of the mentioned treatments were more notable on species.
PubMed: 38732483
DOI: 10.3390/plants13091268 -
JAMA Network Open May 2024Understanding the effect of antenatal magnesium sulfate (MgSO4) treatment on functional connectivity will help elucidate the mechanism by which it reduces the risk of... (Randomized Controlled Trial)
Randomized Controlled Trial
IMPORTANCE
Understanding the effect of antenatal magnesium sulfate (MgSO4) treatment on functional connectivity will help elucidate the mechanism by which it reduces the risk of cerebral palsy and death.
OBJECTIVE
To determine whether MgSO4 administered to women at risk of imminent preterm birth at a gestational age between 30 and 34 weeks is associated with increased functional connectivity and measures of functional segregation and integration in infants at term-equivalent age, possibly reflecting a protective mechanism of MgSO4.
DESIGN, SETTING, AND PARTICIPANTS
This cohort study was nested within a randomized placebo-controlled trial performed across 24 tertiary maternity hospitals. Participants included infants born to women at risk of imminent preterm birth at a gestational age between 30 and 34 weeks who participated in the MAGENTA (Magnesium Sulphate at 30 to 34 Weeks' Gestational Age) trial and underwent magnetic resonance imaging (MRI) at term-equivalent age. Ineligibility criteria included illness precluding MRI, congenital or genetic disorders likely to affect brain structure, and living more than 1 hour from the MRI center. One hundred and fourteen of 159 eligible infants were excluded due to incomplete or motion-corrupted MRI. Recruitment occurred between October 22, 2014, and October 25, 2017. Participants were followed up to 2 years of age. Analysis was performed from February 1, 2021, to February 27, 2024. Observers were blind to patient groupings during data collection and processing.
EXPOSURES
Women received 4 g of MgSO4 or isotonic sodium chloride solution given intravenously over 30 minutes.
MAIN OUTCOMES AND MEASURES
Prior to data collection, it was hypothesized that infants who were exposed to MgSO4 would show enhanced functional connectivity compared with infants who were not exposed.
RESULTS
A total of 45 infants were included in the analysis: 24 receiving MgSO4 treatment and 21 receiving placebo; 23 (51.1%) were female and 22 (48.9%) were male; and the median gestational age at scan was 40.0 (IQR, 39.1-41.1) weeks. Treatment with MgSO4 was associated with greater voxelwise functional connectivity in the temporal and occipital lobes and deep gray matter structures and with significantly greater clustering coefficients (Hedge g, 0.47 [95% CI, -0.13 to 1.07]), transitivity (Hedge g, 0.51 [95% CI, -0.10 to 1.11]), local efficiency (Hedge g, 0.40 [95% CI, -0.20 to 0.99]), and global efficiency (Hedge g, 0.31 [95% CI, -0.29 to 0.90]), representing enhanced functional segregation and integration.
CONCLUSIONS AND RELEVANCE
In this cohort study, infants exposed to MgSO4 had greater voxelwise functional connectivity and functional segregation, consistent with increased brain maturation. Enhanced functional connectivity is a possible mechanism by which MgSO4 protects against cerebral palsy and death.
Topics: Humans; Magnesium Sulfate; Female; Pregnancy; Infant, Newborn; Magnetic Resonance Imaging; Male; Adult; Gestational Age; Cohort Studies; Premature Birth; Infant; Brain; Prenatal Care; Cerebral Palsy
PubMed: 38805222
DOI: 10.1001/jamanetworkopen.2024.13508 -
Veterinary Sciences Jul 2023Giant Pacific octopuses () (GPOs) are commonly housed in zoos or aquaria, and sedation, anesthesia, and/or euthanasia may be indicated for a variety of reasons. Despite...
Giant Pacific octopuses () (GPOs) are commonly housed in zoos or aquaria, and sedation, anesthesia, and/or euthanasia may be indicated for a variety of reasons. Despite this need, evidence-based data on best practices is limited and focuses on smaller or more tropical species. The objectives of this study were to survey the aquatic community regarding the husbandry and veterinary care of GPOs, with a specific focus on anesthetic and euthanasia protocols. A two-part web-based survey was distributed to four aquatic and/or veterinary email listservs. Individuals from fifty-two institutions participated in phase one. Results documented that 40 (78 percent) participating institutions currently house GPOs, with most housing one and nine institutions housing two to three GPOs. The median (range) habitat volume is 5405 (1893-16,465) L, and 78 percent of systems are closed. Of the institutions surveyed, 23 have anesthetized or sedated a GPO for nonterminal procedures, including wound care, biopsies, and hemolymph collection. Reported methods of sedation or anesthesia include magnesium chloride, ethanol, isoflurane, tricaine methanesulfonate (MS-222), magnesium sulfate, benzocaine, and dexmedetomidine. Drugs or methods used for euthanasia include magnesium chloride, ethanol, mechanical decerebration, pentobarbital, isoflurane, MS-222, magnesium sulfate, benzocaine, potassium chloride, dexmedetomidine, and freezing. Reported observed side effects include ineffectiveness or inadequate sedation, inking, prolonged drug effects, and behavior changes. Survey data have the potential to guide the husbandry and veterinary care of GPOs and build the framework for future prospective studies on GPO sedation and anesthesia.
PubMed: 37505853
DOI: 10.3390/vetsci10070448