Interaction of Radiofrequency Radiation with Biological Systems

Rapid advancement of radiofrequency (RF)-driven technologies has greatly affected our everyday lives. Increasing evidence led by in-vitro, in-vivo studies, epidemiological and clinical trials indicates that RF interacts considerably well with biological systems in various ways depending on different exposure parameters and properties of biological materials. Besides their innumerable benefits in different sectors of commercial and military fields, they can induce alterations in many physiological functions of the body, which may culminate into adverse human health consequences. The present article explicitly addresses the RF-based technologies and their applications, fundamentals of RF energy interaction with biological systems, exposure parameters, and dosimetry studies along with thermal and non-thermal effects on different vital organs at molecular and cellular levels. Further, this article outlines the limitations of RF-induced biological effect studies, status of risk assessment, safety levels and its future perspectives

Effect of red and near-infrared wavelengths on low-level laser (light) therapy-induced healing of partial-thickness dermal abrasion in mice

Low-level laser (light) therapy (LLLT) promotes wound healing, reduces pain and inflammation, and prevents tissue death. Studies have explored the effects of various radiant exposures on the effect of LLLT; however, studies of wavelength dependency in in vivo models are less common. In the present study, the healing effects of LLLT mediated by different wavelengths of light in the red and near-infrared (NIR) wavelength regions (635, 730, 810, and 980 nm) delivered at constant fluence (4 J/cm2) and fluence rate (10 mW/cm2) were evaluated in a mouse model of partial-thickness dermal abrasion. Wavelengths of 635 and 810 nm were found to be effective in promoting the healing of dermal abrasions. However, treatment using 730- and 980-nm wavelengths showed no sign of stimulated healing. Healing was maximally augmented in mice treated with an 810-nm wavelength, as evidenced by significant wound area reduction (p < 0.05), enhanced collagen accumulation, and complete re-epithelialization as compared to other wavelengths and non-illuminated controls. Significant acceleration of re-epithelialization and cellular proliferation revealed by immunofluorescence staining for cytokeratin-14 and proliferating cell nuclear antigen (p < 0.05) was evident in the 810-nm wavelength compared with other groups. Photobiomodulation mediated by red (635 nm) and NIR (810 nm) light suggests that the biological response of the wound tissue depends on the wavelength employed. The effectiveness of 810-nm wavelength agrees with previous publications and, together with the partial effectiveness of 635 nm and the ineffectiveness of 730 and 980 nm wavelengths, can be explained by the absorption spectrum of cytochrome c oxidase, the candidate mitochondrial chromophore in LLLT.United States. National Institutes of Healt

Effect of Pulsed 810 nm Laser Photobiomodulation on Dermal Wound Healing and Oxidative Stress in Immunosuppressed Rats

Under immunosuppression, the sequential overlapping wound repair phases get hampered due to dysregulated or persistent inflammation leading to non-healing chronic wounds formation. The present study investigates the effect of low-power 810 nm diode laser (70 mW mean output power; 40 mW/cm2 average irradiance; 24 J/cm2 total fluence; 10 Hz pulse frequency; duty cycle 50 per cent; 10 min. illumination time once daily for seven days) photobiomodulation (PBM) on dermal penetration ability, wound healing and oxidative stress in hydrocortisone-induced immunosuppressed rats. The results of the penetration ability of 810 nm laser irradiation to the depth of the sub-dermal region revealed that the transmitted power of laser at 10 Hz pulsed-mode was better and easier than continuous-mode. The present findings clearly delineated that PBM with 810 nm laser at 10 Hz significantly augmented healing and reduced oxidative stress as evidenced by decreased free radicals, nitric oxide (NO) levels, enhanced superoxide dismutase (SOD) enzyme activity and wound area contraction facilitating the cellular redox homeostasis and promoting the tissue repair process. In conclusion, PBM with NIR 810 nm laser at pulsed-mode 10 Hz frequency showed better penetration and accelerated dermal wound healing in immunosuppressed rats

Multi Targeted Non Invasive Photoceutical Therapeutic Approach for Combat and Traumatic Soft Tissue Injuries

Combat and soft tissue traumatic injuries pose unique challenges in terms of their severity, complexity, and thus need for the exploration of rapid, novel therapeutic interventions. Traditionally, combat injuries have been managed through invasive surgical procedures associated with potential complications and prolonged recovery times. However, advancements in non-invasive treatment modalities have opened up new possibilities for managing combat injuries more effectively and efficiently. The present article aims to provide a comprehensive overview of non-invasive, drug-free, biophysical therapeutic approaches for combat and external traumatic injuries, focusing on their benefits, efficacy, and potential applications. The non-invasive nature and favourable safety profile of photobiomodulation therapy (PBMT) make it an attractive option for combat injury management. The evidence on underlying mechanistic insights supports the efficacy of PBMT in promoting tissue repair, reducing pain, inflammation, oxidative stress, and facilitating functional recovery. In conclusion, the present review highlights the significant potential of non-invasive PBMT using dual/multi-wavelength light energy as a valuable therapeutic approach for traumatic soft tissue and combat injuries and extensively explores associated mechanistic insights. Further research on combination therapies using potential pharmacological agents in conjunction with PBMT, with optimal irradiation protocols and other energy-based healing modalities will favour the translation of potential non-invasive healing intervention for combat and traumatic injuries in clinical applications

Mechanism of Wound-Healing Activity of Hippophae rhamnoides L. Leaf Extract in Experimental Burns

The present investigation was undertaken to evaluate the healing efficacy of lyophilized aqueous leaf extract of Sea buckthorn (Hippophae rhamnoides L., family Elaeagnaceae) (SBT) and to explore its possible mechanism of action on experimental burn wounds in rats. The SBT extract, at various concentrations, was applied topically, twice daily for 7 days. Treatment with silver sulfadiazine (SSD) ointment was used as reference control. The most effective concentration of the extract was found to be 5.0% (w/w) for burn wound healing and this was further used for detailed study. The SBT-treated group showed faster reduction in wound area in comparison with control and SSD-treated groups. The topical application of SBT increased collagen synthesis and stabilization at the wound site, as evidenced by increase in hydroxyproline, hexosamine levels and up-regulated expression of collagen type-III. The histological examinations and matrix metalloproteinases (MMP-2 and -9) expression also confirmed the healing efficacy of SBT leaf extract. Furthermore, there was significant increase in levels of endogenous enzymatic and non-enzymatic antioxidants and decrease in lipid peroxide levels in SBT-treated burn wound granulation tissue. The SBT also promoted angiogenesis as evidenced by an in vitro chick chorioallantoic membrane model and in vivo up-regulated vascular endothelial growth factor (VEGF) expression. The SBT leaf extract had no cytotoxic effect on BHK-21 cell line. In conclusion, SBT aqueous leaf extract possesses significant healing potential in burn wounds and has a positive influence on the different phases of wound repair

Role of H2S Supplementation on Burn Wound Healing and Molecular Chaperones

Treatment of non-healing burn injuries is a major challenge for the current scientific research. Hydrogen sulfide (H2S) is an endogenous gasotransmitter, which regulates redox homeostasis and cytoprotection during pathophysiological conditions. Similarly, heat shock proteins (HSPs) are molecular chaperones, which also confer cytoprotection during the wound repair process. Notably, the role of H2S as a regulator of HSPs during burn wound healing is still elusive. The present study investigated the effects of H2S supplementation on molecular chaperones during full-thickness, third-degree burn wound healing in the experimental rats. The animals were treated with sodium hydrosulphide (NaHS) as H2S donor (5 mg/kg body weight, intraperitoneal) daily for 10 days prior to burn-induction and continued till the fifth-day post-wounding. Histopathological analysis (Masson’s trichrome) revealed enhanced wound healing evident by increased collagen fiber deposition, cellular proliferation and re-epithelialisation in NaHS administered group as compared to the burn control. Furthermore, immunoblot analyses demonstrated significantly increased protein expression of molecular chaperons viz. HSP90, HSP70, HSP27, and GRP78 in H2S treated group as compared to control. Therefore, the present study signifies that H2S supplementation upregulates the protein expression levels of molecular chaperones, which could facilitate the cytoprotection&nbsp;during the tissue repair process and accelerates the burn wound healing

SYSTEM AND METHOD FOR MANAGING FAULTS IN A DISTRIBUTED ENVIRONMENT

The present disclosure discloses a method and a system for managing faults in a distributed environment 102. In the present disclosure, the method includes monitoring health metrics of systems 106 in the distributed environment 102. Further, the method includes detecting faults associated with the systems 106 in the distributed environment 102 by identifying abnormal patterns based on monitored data. Furthermore, the method includes reconfiguring the distributed environment 102 to maintain system resilience and performance based on fault detection. Further, the method includes determining a recovery action based on severity of faults. Furthermore, the method includes analyzing and diagnosing issues by logging and auditing the faults

BLUE GREEN DEPLOYMENT STRATEGY FOR APPLICATIONS USING KAFKA

BLUE GREEN DEPLOYMENT STRATEGY FOR APPLICATIONS USING KAFKA Disclosed herein is a blue-green deployment strategy for consumer applications using the Kafka system. The present disclosure proposes setting producer and consumer configurations in a way that green application consumers are able to consume messages from Kafka topic, hence enabling application teams to test their changes in a green environment. To achieve this, the present disclosure provides a rebalancing of partitions technique where the number of partitions are configured either twice the number of consumers or greater than twice the number of consumers so that all consumers in a consumer group are active and are able to consume data from Kafka topic

Rapid Solvent-free Synthesis of Aromatic Hydrazidesunder Microwave Irradiation

A variety of aromatic hydrazides has been synthesised by solvent-free hydrazinolysis ofcorresponding esters with hydrazine hydrate under microwave irradiation

Scalp arteriovenous malformation: A case report with review

Arteriovenous malformation (AVM) of the scalp is a rare lesion whose natural history remains to be elucidated. Clinical symptoms, usually, range from an asymptomatic lesion, local discomfort, headaches to necrosis and massive hemorrhage. Selective angiography remains the cornerstone for investigation. Complete surgical excision, embolization or an approach combining the modalities is curative. It can also cause massive hemorrhages due to dryness of the overlying skin and injuries. In this report we describe the clinical and radiological features of a patient with a scalp arteriovenous malformation