Photic Stress and Rhythmic Physiological Processes: Roles of Selenium as a Chronobiotic

Awosika, Ayoola; Adeniyi, Mayowa J.; Okojie, A.; Okeke, Cynthia

doi:10.5772/intechopen.110294

Cited by 4 publications

(3 citation statements)

References 52 publications

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“…Peripheral oxygen saturation and shock index indicate level of tissue perfusion. Peripheral oxygen saturation is a proportion of oxygenated blood and it is influenced by capillary density [21,[36][37][38][39][40]. The study showed that post-exercise orthostasis elicited a decrease in peripheral oxygen saturation in males when compared to females.…”

Section: Discussionmentioning

confidence: 99%

Impact of Gender on Post-Exercise Orthostasis Related Changes in EEG Amplitudes

Adeniyi¹,

Awosika²

2023

Middle East Res J Med Sci

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Changes occur in brain functions before, during and after physical exercise as well as during orthostasis in males and females. The study aimed at understanding the effect of gender on post-exercise orthostasis induced changes in EEG amplitudes. 30 apparently healthy individuals consisting of 15 males (18.5 years) and 15 females (18.5years) were recruited for the study. They were divided into baseline, exercise and post-exercise orthostasis groups. Subjects were exercised on a treadmill for 10 minutes at 8km/hr. After which they were asked to stand for 10 minutes on both legs. EEG recording was carried out using PowerLab 26T using frontal and occipital electrodes as indicated in the operational manual. When compared with baseline, post-exercise orthostasis caused reduction in theta waves amplitude in males and females respectively and a decrease in alpha waves amplitude in males only. Post-exercise orthostasis lowered theta waves amplitude in males when compared with females while other EEG waves were not affected. There was a positive correlation was observed between shock index and alpha wave amplitude (r= 0.437, P<0.05) in males during post-exercise orthostasis but none in female. The findings of the study indicated that orthostasis after exercise relatively reduced theta waves in males compared to females.

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Section: Discussionmentioning

confidence: 99%

Impact of Gender on Post-Exercise Orthostasis Related Changes in EEG Amplitudes

Adeniyi¹,

Awosika²

2023

Middle East Res J Med Sci

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“…It can also disrupt circadian rhythms, causing deranged melatonin secretion, altered leptin secretion, impaired hormonal secretions and altered sleep/wakefulness cycle [44][45][46][47]. Noise can cause headache, confusion, increase in blood pressure and heart rate [3,17,[48][49][50][51][52].…”

Section: Discussionmentioning

confidence: 99%

Occupation-Related Stress and Stress-Related Risk Factors among Nurses in West Africa

Awosika¹,

Adeniyi²

2023

Middle East Res J Med Sci

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Occupational stress has for many decades remained a major concern Worldwide. In West Africa region, it is an amplified discussion owing to technological deficit, deficiency of work-relieving physical and social amenities, unemployment and underemployment and corruption. Nurses are health workers involved in the healthcare and management of people. The review was designed to examine various stress–relating risk factors among nurses in West Africa. A literature search was done using Web-based databases like Google Scholar, PubMed, Scopus, and Web of Science. The search was done using several terms and text words. Increased workload, hazard exposure, shortage of staff, poor incentives, poor patient attitude, increased length and frequency of duty, shortage of resources and equipment, work environment, high energy involvement and limited opportunity for professional advancement were risk factors for occupation-related stress among nurses in West Africa. The most predominant risk factor was increased workload followed by shortage of equipment and resources.

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“…They are approved by the FDA for the treatment of solid tumors like breast, ovarian, lung, bladder, or prostate cancer and hematopoietic malignancies like leukemia and lymphoma, respectively. [11][12][13] The significance of such biologicals is highlighted by the fact that around 25% of all pharmaceutical drugs are either natural products or derived from such substances. 8 Plumbagin (5-hydroxy-2-methyl-1,4-naphthoquinone) is a secondary metabolite found in plants of the Plumbaginaceae family (Plumbago capensis, Plumbago rosea, and Plumbago indica).…”

Section: Introductionmentioning

confidence: 99%

Cellular ROS tolerance determines the effect of plumbagin on osteoclast differentiation

Sultanli,

Schneider,

Burkart

et al. 2023

The FASEB Journal

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Plumbagin is used in traditional medicine because of its anti‐inflammatory and anti‐microbial properties. As a naphthoquinone, plumbagin triggers the production of reactive oxygen species (ROS). In vitro cancer studies showed that plumbagin triggers apoptosis in cancer cells through ROS production. As cancer‐mediated chronic inflammation can affect bone density, it was hypothesized that plumbagin might directly inhibit the formation of bone‐resorbing osteoclasts. We previously showed that the effect of plumbagin on osteoclastogenesis differed between bone marrow‐derived macrophages and the macrophage cell line RAW 264.7. Although RAW 264.7 macrophages are able to initiate the gene program required for osteoclastogenesis, only primary macrophages successfully differentiate into osteoclasts. Here, we show that RAW 264.7 cells are more sensitive toward plumbagin‐induced apoptosis. In the presence of plumbagin and the cytokine RANKL, which triggers ROS production to drive osteoclastogenesis, RAW 264.7 macrophages produce increased amounts of ROS and die. Addition of the ROS scavenger N‐acetyl cysteine prevented cell death, linking the failure to differentiate to increased ROS levels. RAW 264.7 cells show reduced expression of genes protective against oxidative stress, while primary macrophages have a higher tolerance toward ROS. Our data suggest that it is indispensable to consider cell (line)‐intrinsic properties when studying phytochemicals.

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Photic Stress and Rhythmic Physiological Processes: Roles of Selenium as a Chronobiotic

Cited by 4 publications

References 52 publications

Impact of Gender on Post-Exercise Orthostasis Related Changes in EEG Amplitudes

Impact of Gender on Post-Exercise Orthostasis Related Changes in EEG Amplitudes

Occupation-Related Stress and Stress-Related Risk Factors among Nurses in West Africa

Cellular ROS tolerance determines the effect of plumbagin on osteoclast differentiation

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