Physiological Changes Research Articles

Assessment of metabolomic variations among individuals returning to plain areas after exposure to high altitudes: a metabolomic analysis of human plasma samples with high-altitude de-acclimatization syndrome.

High altitude de-acclimatization (HADA) is gradually becoming a public health concern as millions of individuals of different occupations migrate to high-altitude areas for work due to economic growth in plateau areas. HADA affects people who return to lower elevations after exposure to high altitudes. It causes significant physiological and functional changes that can negatively impact health and even endanger life. However, uncertainties persist about the detailed mechanisms underlying HADA. We established a population cohort of individuals with HADA and assessed variations in metabolite composition. Plasm samples of four groups, including subjects staying at plain (P) and high altitude (H) as well as subjects suffering from HADA syndrome with almost no reaction (r3) and mild-to-moderate reaction (R3) after returning to plain from high altitude, were collected and analyzed by Liquid Chromatography-Mass Spectrometry metabolomic. Multivariate statistical analyses were used to explore significant differences and potential clinical prospect of metabolites. Although significantly different on current HADAS diagnostic symptom score, there were no differences in 17 usual clinical indices between r3 and R3. Further multivariate analyses showed isolated clustering distribution of the metabolites among the four groups, suggesting significant differences in their metabolic characteristics. Through K-means clustering analysis, we identified 235 metabolites that exhibited patterns of abundance change consistent with phenotype of HADA syndrome. Pathway enrichment analysis indicated a high influence of polyunsaturated fatty acids under high-altitude conditions. We compared the metabolites between R3 and r3 and found 107 metabolites with differential abundance involved in lipid metabolism and oxidation, suggesting their potential role in the regulation of oxidative stress homeostasis. Among them, four metabolites might play a key role in the occurrence of HADA, including 11-beta-hydroxyandrosterone-3-glucuronide, 5-methoxyindoleacetate, 9,10-epoxyoctadecenoic acid, and PysoPC (20:5). We observed the dynamic variation in the metabolic process of HADA. Levels of four metabolites, which might be provoking HADA mediated through lipid metabolism and oxidation, were expected to be explore prospective indices for HADA. Additionally, metabolomics was more efficient in identifying environmental risk factors than clinical examination when dramatic metabolic disturbances underlying the difference in symptoms were detected, providing new insights into the molecular mechanisms of HADAS.

Unravelling physiological and histochemical changes in two popular dessert and cooking bananas of India during fruit ripening

The physicochemical and histochemical characteristics of two consumingly divergent commercial varieties of Musaceae (Musa cv. Kanthali and Musa cv. Kacha Kela) were investigated during their postharvest ripening. The fruit peels from both cultivars were characterised by a reduction in chlorophyll contents, loosening of cortical tissues, and shrinkage of parenchymatous cells. The pulp-to-peel ratio, total soluble sugars, reducing sugar, fruit firmness, electrolyte leakage, and respiration rate were investigated along with activities of a few enzymes involved in fruit softening, namely cellulase, xylanase, invertase and glucanase. Additionally, semi-quantitative gene expression analyses with a few ripening-related genes, including ethylene biosynthesis (MaACS and MaACO), carbohydrate metabolism viz. sucrose synthase (MaSUS), sucrose phosphate synthase (MaSPS), glucanase (MaGLU), invertase (MaINV) and pectin methyl esterase (MaPME) were also carried out along with chitinase (MaCHT) in both cultivars during postharvest ripening. A faster postharvest ripening of ‘Kanthali’ than ‘Kacha Kela’ was evidenced as an outcome of the above studies.The peel histology and surface ultrastructure were examined through light microscopy and scanning electron microscopy (SEM), respectively. In light microscopy, substantial variations were noted between the cultivars, especially on peel-tissue degradation and accumulation of metabolites. The surface ultrastructure revealed temporal variations in the peel stomatal opening along with gradual depletion of surface wax. Such temporal opening of stomata was found to coincide with our earlier recorded postharvest volatiles emission patterns of respective cultivars suggesting it to be a legible vent for aroma emission.

Robotic Pediatric Urologic Surgery-Clinical Anesthetic Considerations: A Comprehensive Review

: Minimally invasive robotic approaches have become standard in many institutions over the last decade for various pediatric urological procedures. The anesthetic considerations for common laparoscopic and robotic-assisted surgeries are similar since both require the insufflation of CO2 to adequately visualize the operative area. However, few studies exist regarding anesthesia for robotic procedures in children. We hypothesized that pediatric patients undergoing robotic urologic surgeries would require specific anesthetic strategies, especially given the inherently longer durations of these procedures. This study aimed to evaluate anesthetic considerations, current robotic procedures, optimal patient positioning, and port placement for robotic-assisted surgery in pediatric patients. A comprehensive literature review of all published manuscripts from PubMed, EMBASE database, and Google Scholar was performed, focusing on robotic procedures involving pediatric patients, anesthesia for pediatric urology patients, and related topics from 1996 to 2023. Forty published manuscripts were identified and reviewed in depth. In pediatric cases, insufflation pressures and volumes are lower due to the laxity of the abdominal wall. However, the increase in intra-abdominal pressure and absorption of CO2 may result in disproportionate changes in cardiopulmonary function. Specific patient positioning for robotic approaches may further compound these physiological changes. Correct patient positioning is essential to facilitate surgery optimally and safely. Understanding the physiological changes that can occur during a pediatric patient’s robotic urologic surgery allows for safer anesthesia management.

Perceived barriers and facilitators for model-informed dosing in pregnancy: a qualitative study across healthcare practitioners and pregnant women

BackgroundMost women use medication during pregnancy. Pregnancy-induced changes in physiology may require antenatal dose alterations. Yet, evidence-based doses in pregnancy are missing. Given historically limited data, pharmacokinetic models may inform pregnancy-adjusted doses. However, implementing model-informed doses in clinical practice requires support from relevant stakeholders.PurposeTo explore the perceived barriers and facilitators for model-informed antenatal doses among healthcare practitioners (HCPs) and pregnant women.MethodsOnline focus groups and interviews were held among healthcare practitioners (HCPs) and pregnant women from eight countries across Europe, Africa and Asia. Purposive sampling was used to identify pregnant women plus HCPs across various specialties prescribing or providing advice on medication to pregnant women. Perceived barriers and facilitators for implementing model-informed doses in pregnancy were identified and categorised using a hybrid thematic analysis.ResultsFifty HCPs and 11 pregnant women participated in 12 focus groups and 16 interviews between January 2022 and March 2023. HCPs worked in the Netherlands (n = 32), the UK (n = 7), South Africa (n = 5), Uganda (n = 4), Kenya, Cameroon, India and Vietnam (n = 1 each). All pregnant women resided in the Netherlands. Barriers and facilitators identified by HCPs spanned 14 categories across four domains whereas pregnant women described barriers and facilitators spanning nine categories within the same domains. Most participants found current antenatal dosing information inadequate and regarded model-informed doses in pregnancy as a valuable and for some, much-needed addition to antenatal care. Although willingness-to-follow model-informed antenatal doses was high across both groups, several barriers for implementation were identified. HCPs underlined the need for transparent model validation and endorsement of the methodology by recognised institutions. Foetal safety was deemed a critical knowledge gap by both groups. HCPs’ information needs and preferred features for model-informed doses in pregnancy varied. Several pregnant women expressed a desire to access information and partake in decisions on antenatal dosing.ConclusionsGiven the perceived limitations of current pharmacotherapy for pregnant women and foetuses, model-informed dosing in pregnancy was seen as a promising means to enhance antenatal care by pregnant women and healthcare practitioners.

Antimicrobial Pharmacokinetic Considerations in Extracorporeal Membrane Oxygenation.

Critical illness creates challenges for healthcare providers in determining the optimal treatment of severe disease, particularly in determining the most appropriate selection and dosing of medications. Critically ill patients experience endogenous physiologic changes that alter the pharmacokinetics (PKs) of medications. These alterations can be further compounded by mechanical support modalities such as extracorporeal membrane oxygenation (ECMO). Specific components of the ECMO circuit have the potential to affect drug PKs through drug sequestration and an increase in the volume of distribution. Factors related to the medications themselves also play a role. These PK alterations create problems when trying to properly utilize antimicrobials in this patient population. The literature seeking to identify appropriate antimicrobial dosing regimens is both limited and difficult to evaluate due to patient variability and an inability to determine the exact role of the ECMO circuit in reduced drug concentrations. Lipophilic and highly protein bound medications are considered more likely to undergo significant drug sequestration in an ECMO circuit, and this general trend represents a logical starting point in antimicrobial selection and dosing in patients on ECMO support. This should not be the only consideration, however, as identifying infection and evaluating the efficacy of treatments in this population is challenging. Due to these challenges, therapeutic drug monitoring should be utilized whenever possible, particularly in cases with severe infection or high concern for drug toxicity.

Factors influencing nurses’ pain assessment and management of road traffic casualties: a qualitative study at a military hospital in Ghana

BackgroundEvidence shows that patients who visit the surgical and trauma emergency units may be discharged with untreated or increased pain levels. This study explored nurses’ pain assessment and management approaches at a trauma-surgical emergency unit in Ghana.MethodsSeventeen nurses who work in the trauma department participated in this qualitative exploratory descriptive study. In-depth individual interviews were conducted, and the thematic analysis was utilized to identify emerging themes and subthemes.ResultsThree main themes were identified: patient pain indicators, pain management, and institutional factors influencing pain management. The study revealed that nurses rely on verbal expressions, non-verbal cues, physiological changes, and the severity of pain communicated. The findings highlighted staff shortage, inadequate resources, and lack of standardized guidelines as factors affecting pain and management.ConclusionsAlthough the study offers critical new perspectives on nurses’ experiences regarding pain related issues at the trauma-surgical emergency units, its small sample size limited its generalizability.

Reflectance spectroscopy: a non-invasive strategy to explore skin reactions to topical products.

Reflectance spectroscopy has emerged as a powerful analytical technique in the field of dermatology, offering a non-invasive strategy to assess several cutaneous properties and skin response to topical products. By analyzing reflected light across different wavelengths, reflectance spectroscopy allows the quantification of cutaneous parameters, such as erythema index and melanin content. Moreover, this analytical technique enables the monitoring of any changes in skin physiology facilitating the assessment of long-term effects of topical products as well as predicting cutaneous diseases. This review provides an overview of the application of reflectance spectroscopy in investigating skin properties and reaction to topical applied products, including both pharmaceutical and cosmetic formulations, thereby aiding in the development of personalized solutions tailored to individual needs.

Unraveling the impact of water deficit stress on nutritional quality and defense response of tomato genotypes.

Water deficit stress triggers various physiological and biochemical changes in plants, substantially affecting both overall plant defense response and thus nutritional quality of tomatoes. The aim of this study was to assess the antioxidant defense response and nutritional quality of different tomato genotypes under water deficit stress. In this study, six tomato genotypes were used and subjected to water deficit stress by withholding water for eight days under glass house conditions. Various physiological parameters from leaves and biochemical parameters from tomato fruits were measured to check the effect of antioxidant defense response and nutritional value. Multi-trait genotype-ideotype distance index (MGIDI) was used for the selection of genotypes with improved defense response and nutritional value under water deficit stress condition. Results indicated that all physiological parameters declined under stress conditions compared to the control. Notably, NBH-362 demonstrated resilience to water deficit stress, improving both defense response and nutritional quality which is evident by an increase in proline (16.91%), reducing sugars (20.15%), total flavonoids (10.43%), superoxide dismutase (24.65%), peroxidase (14.7%), and total antioxidant capacity (29.9%), along with a decrease in total oxidant status (4.38%) under stress condition. Overall, the findings suggest that exposure to water deficit stress has the potential to enhance the nutritional quality of tomatoes. However, the degree of this enhancement is contingent upon the distinct genetic characteristics of various tomato genotypes. Furthermore, the promising genotype (NBH-362) identified in this study holds potential for future utilization in breeding programs.

Subclinical hypocalcemia in primiparous lacaune ewes

Peripartum in sheep is a critical period of high nutritional demand, as the animal's body undergoes several physiological changes due to the high energy expenditure for the development of one or more fetuses and for maintenance, and metabolic disturbances can occur. The aim of this study was to assess the influence of subclinical hypocalcemia in the pre-partum period on the metabolism of primiparous Lacaune ewes in the peripartum period. Thirteen primiparous Lacaune ewes with an average body weight of 73.54 ± 10.70 kg, an average body score of 3.12 ± 0.42 and an average age of 0.85 ± 0.55 pairs of teeth were used. Blood samples and body condition score evaluations were taken from the ewes on days -14, -9 and -4 days before they were due to give birth and on days 1, 3, 7 and 14 days after giving birth. The ewes' serum was analyzed for calcium (Ca), magnesium (Mg), non-esterified fatty acids (NEFA), beta hydroxy butyrate (BHB), aspartate aminotransferase (AST), gamma glutamyl transferase (GGT), paraoxonase 1 (PON1), albumin (ALB), total plasma proteins (PPT) and urea. The animals were categorized according to their average prepartum Ca levels into the normocalcemic group (NC ≥ 9.41) and subclinical hypocalcemia (HC < 9.41 mg/dl). The data was analyzed using SAS software. The number of lambs at birth did not influence serum calcium levels in primiparous ewes (P= 0.4687). There was an interaction between group and collection on calcium (P=0.0166) and magnesium (P=0.0428) levels. The highest level of magnesium was observed in the normocalcemic group at collection -14, while the lowest level of calcium was observed in the hypocalcemic group at collection -14. There was a collection effect on body condition score (BCS), NEFA, BHB, AST and GGT (P<0.05). The lowest BCS (P = 0.0300) and the highest levels of NEFA (P = 0.0143) and BHBA (P = 0.0316) were observed on day 14 after calving. Higher levels of AST and GGT were observed in the postpartum period (P<0.05). The number of lambs at birth does not influence calcemia, and negative energy balance is more pronounced after birth in primiparous Lacaune ewes.

(064) DIFFERENCES IN EROGENOUS SENSATION AND SEXUAL SATISFACTION BETWEEN PRE- VERSUS POSTMENOPAUSAL CISGENDER WOMEN

Abstract Introduction Menopause has been associated with a myriad of genitourinary and sexual function symptoms that revolve around changes to the vulva and vagina. The medical literature at present primarily assesses genitourinary syndromes of menopause, with limited focus on how these physiological changes to the vulva and vagina may impact sexual function and satisfaction. Objective To describe differences that exist between pre- versus postmenopausal women in erogenous sensation zone (ESZ) maps of the vulva and measured satisfaction with partnered sex. Methods Sexually active cisgender women were recruited via Qualtrics and completed an anonymous, online questionnaire. Respondents viewed anatomic illustrations of the vulva with nine predefined areas and were instructed to select structures that bring them pleasure when touched during sex with a partner. A map of erogenous sensation of the vulva was then created based on the number of respondents selecting each structure. Respondents also completed the New Sexual Satisfaction Scale (NSSS), a 20-item psychometric survey that assesses sexual satisfaction with partnered sex on a 5-point Likert scale, with potential scores ranging from 20 (minimal sexual satisfaction) to 100 (maximum sexual satisfaction). Results Pre- and postmenopausal women were equally as likely to select at least one ESZ of the vulva (77% premenopausal women vs 81% postmenopausal women, p=0.4). The vaginal introitus, peri urethra, and clitoris were the three most frequently selected structures out of the nine ESZs of the vulva out of all respondents (Figure 1). Assessment for differences in selection between pre- and postmenopausal women for each structure revealed that significantly more premenopausal women selected the clitoris as erogenous (43% vs 32%, p<0.03). There was no statistically significant difference in the other vulvar ESZs. With respect to partnered sexual satisfaction (as measured by the NSSS), there was no statistically significant difference between groups. Premenopausal women reported an average NSSS score of 69 out of 100 and postmenopausal women 67 out of 100 (p=0.3). Conclusions While premenopausal women were significantly more likely to report the clitoris as erogenous as compared to postmenopausal women, there was no significant difference between groups in erogenous mapping of the eight other vulvar structures. This finding of reduced clitoral erogeneity is supported by the phenomenon of vulvovaginal atrophy, which is associated with the reduction in estrogen and other sex steroids that occurs during menopause. While menopause has been associated with sexual dysfunction, we found no statistically significant difference in self-reported satisfaction with partnered sexual activities. Disclosure No.

Mitochondrial microRNA profiles are altered in thirteen-lined ground squirrels (Ictidomys tridecemlineatus) during hibernation.

Thirteen-lined ground squirrels (TLGS) are obligate hibernators that cycle between torpor (low metabolic rate and body temperature) and interbout euthermia (IBE; typical euthermic body temperature and metabolism) from late autumn to spring. Many physiological changes occur throughout hibernation, including a reduction in liver mitochondrial metabolism during torpor, which is reversed during arousal to interbout euthermia. Nuclear-encoded microRNA (small post-transcriptional regulator molecules) differ in abundance throughout TLGS hibernation and have been shown to regulate mitochondrial gene expression in mammalian cell culture (where they are referred to as mitomiRs). This study characterized differences in mitomiR profiles from TLGS liver mitochondria isolated during summer, torpor, and IBE, and predicted their mitochondrial targets. Using small RNA sequencing, differentially abundant mitomiRs were identified between hibernation states and, using qPCR analysis we quantified expression of predicted mitochondrial mRNA targets. Most differences in mitomiR abundances were seasonal (i.e. between summer and winter) with only one mitomiR differentially abundant between IBE and torpor. Multiple factor analysis revealed three clusters divided by hibernation states, where clustering was predominantly driven by mitomiR abundances. Nine of these differentially abundant mitomiRs had predicted mitochondrial RNA targets, including subunits of electron transfer system complexes I and IV, 12S rRNA and two tRNAs. Overall, mitomiRs were predicted to suppress expression of their mitochondrial targets and may have some involvement in regulating protein translation in mitochondria. This study found differences in mitomiR abundances between seasons and hibernation states of TLGS and suggests potential mechanisms in regulating the mitochondrial electron transfer system.

Atmospheric NO2 enhances tolerance to low temperature by promoting nitrogen and carbon metabolism in tobacco

With abnormal global climate change and the frequent occurrence of extreme weather, low-temperature stress poses an increasingly serious threat to the diversity of plants. Low temperatures accompanied by limitations in nitrogen cause a series of morphological, physiological, and molecular changes in plants. Nitrogen dioxide (NO2) is a gas that is considered to be a toxic air pollutant. However, NO2 in the atmosphere can be absorbed by plants and participate in nitrogen metabolism. In this study, tobacco (Nicotiana tabacum L.) seedlings were fumigated with a concentration of 4µL·L-1 NO2 at 4 ℃ for 10 days. NO2 promoted the glutamine synthetase-glutamate synthase (GS/GOGAT) pathway in the leaves at low temperatures, which transforms more organic nitrogen that can be directly utilized by the plants, and improves the skeleton for carbon metabolism. Moreover, gamma-aminobutyric acid (GABA) was generated through the ornithine and glutamate pathways, and the biosynthesis of proline was also enhanced after treatment with NO2. Together, these compounds regulate the osmotic balance of tobacco leaf cells under low-temperature stress. NO2 activated the ascorbate-glutathione (AsA-GSH) cycle in the leaves under low-temperature stress, and this antioxidant enzyme system synergistically removed the intracellular free radicals that result from reactive oxygen species. Additionally, NO2 significantly increased the content of nitric oxide (NO) in the leaves under low-temperature stress and enhanced the opening of stomata, thus, improving photosynthesis in the leaves. The biosynthesis of chlorophyll in the leaves was inhibited by low-temperature stress, but NO2 promotes the biosynthesis of chlorophyll directly or through the nitric acid signaling pathway and improves the ability of plants to capture light energy. NO2 also alleviates the photoinhibition induced by cold stress by regulating photosynthetic electron transfer and absorbing more energy for the assimilation of photosynthetic carbon. This improves the photochemical efficiency of tobacco leaves. In conclusion, NO2 enhanced the tolerance of tobacco seedlings to low temperature by regulating nitrogen metabolism, the osmotic balance, antioxidant system, and photosynthesis.

Transcriptome Profiling Reveals the Response of Seed Germination of Peganum harmala to Drought Stress.

Peganum harmala L. is a perennial herbaceous plant that plays critical roles in protecting the ecological environment in arid, semi-arid, and desert areas. Although the seed germination characteristics of P. harmala in response to environmental factors (i.e., drought, temperature, and salt) have been investigated, the response mechanism of seed germination to drought conditions has not yet been revealed. In this study, the changes in the physiological characteristics and transcriptional profiles in seed germination were examined under different polyethylene glycol (PEG) concentrations (0-25%). The results show that the seed germination rate was significantly inhibited with an increase in the PEG concentration. Totals of 3726 and 10,481 differentially expressed genes (DEGs) were, respectively, generated at 5% and 25% PEG vs. the control (C), with 1642 co-expressed DEGs, such as drought stress (15), stress response (175), and primary metabolism (261). The relative expression levels (RELs) of the key genes regulating seed germination in response to drought stress were in accordance with the physiological changes. These findings will pave the way to increase the seed germination rate of P. harmala in drought conditions.

A study on waterlogging tolerance in sugarcane: a comprehensive review.

Sugarcane (Saccharum officinarum) is an important crop, native to tropical and subtropical regions and it is a major source of sugar and Bioenergy in the world. Abiotic stress is defined as environmental conditions that reduce growth and yield below the optimum level. To tolerate these abiotic stresses, plants initiate several molecular, cellular, and physiological changes. These responses to abiotic stresses are dynamic and complex; they may be reversible or irreversible. Waterlogging is an abiotic stress phenomenon that drastically reduces the growth and survival of sugarcane, which leads to a 15-45% reduction in cane's yield. The extent of damage due to waterlogging depends on genotypes, environmental conditions, stage of development and duration of stress. An improved understanding of the physiological, biochemical, and molecular responses of sugarcane to waterlogging stress could help to develop new breeding strategies to sustain high yields against this situation. The present review offers a summary of recent findings on the adaptation of sugarcane to waterlogging stress in terms of growth and development, yield and quality, as well as biochemical and adaptive-molecular processes that may contribute to flooding tolerance.

The Effect of Topical Rosa damascena Mill. and Sesamum indicum L. Oils on the Avoidance of Striae Gravidarum: A Randomised Controlled Trial

IntroductionStriae gravidarum (SG) is the most prevalent physiological skin change experienced by pregnant women during gestation. This study aimed to evaluate the effects of topical Sesamum indicum L. (Sesame) and Rosa damascena Mill. (R damascena) oils because of their skin-healing properties in preventing SG in nulliparous females. MethodsThis study was a triple-blinded, randomised, controlled trial conducted on 150 nulliparous mothers in the age group of 18–35 from 16 to 20 weeks of pregnancy. Participants were randomly assigned to the R damascena oil, Sesame oil, or placebo group with a 1:1:1 randomisation ratio. They received the allocated intervention of 1 g, twice/d, without massaging the abdomen for 20 weeks. Socio-demographic and obstetric characteristics and SG risk factors were completed at baseline. Davey's and Kamini's methods were used as data-gathering tools for assessing striae and itching. ResultsThere were no significant differences between study groups in baseline characteristics. The occurrence of striae between 35 and 38 weeks of pregnancy was similar (72%, 74%, and 74% among R damascena oil, Sesame oil, and the placebo group, respectively; P = 0.919). More than 50% of participants had severe SG. The itching was reported by 40%, 54%, and 40% of participants among the R damascena oil, Sesame oil, and control groups, respectively (P = 0.129), which was mild mostly. Skin redness and itching following topical oil use were the reported side effects. ConclusionsThis study indicated that using R damascene and Sesame oil 10% did not affect the incidence and severity of striae and itching compared to the control.

Microglia Caspase11 non-canonical inflammasome drives fever.

Animals exhibit physiological changes designed to eliminate the perceived danger, provoking similar symptoms of fever. However, a high-grade fever indicates poor clinical outcomes. Caspase11 (Casp11) is involved in many inflammatory diseases. Whether Casp11 leads to fever remains unclear. In this study, we investigate the role of the preoptic area of the hypothalamus (PO/AH) microglia Casp11 in fever. We perform experiments using a rat model of LPS-induced fever. We measure body temperature and explore the functions of peripheral macrophages and PO/AH microglia in fever signaling by ELISA, immunohistochemistry, immunofluorescence, flow cytometry, macrophage depletion, protein blotting, and RNA-seq. Then, the effects of macrophages on microglia in a hyperthermic environment are observed invitro. Finally, adeno-associated viruses are used to knockdown or overexpress microglia Casp11 in PO/AH to determine the role of Casp11 in fever. We find peripheral macrophages and PO/AH microglia play important roles in the process of fever, which is proved by macrophage and microglia depletion. By RNA-seq analysis, we find Casp11 expression in PO/AH is significantly increased during fever. Co-culture and conditioned-culture simulate the induction of microglia Casp11 activation by macrophages in a non-contact manner. Microglia Casp11 knockdown decreases body temperature, pyrogenic factors, and inflammasome, and vice versa. We report that Casp11 drives fever. Mechanistically, peripheral macrophages transmit immune signals via cytokines to microglia in PO/AH, which activate the Casp11 non-canonical inflammasome. Our findings identify a novel player, the microglia Casp11, in the control of fever, providing an explanation for the transmission and amplification of fever immune signaling.

Differential gene expression in irradiated potato tubers contributed to sprout inhibition and quality retention during a commercial scale storage

Current study is the first ever storage cum market trial of radiation processed (28 tons) of potato conducted in India at a commercial scale. The objective was to affirm the efficacy of very low dose of gamma radiation processing of potato for extended storage with retained quality and to understand the plausible mechanism at the gene modulation level for suppression of potato sprouting. Genes pertaining to abscisic acid (ABA) biosynthesis were upregulated whereas its catabolism was downregulated in irradiated potatoes. Additionally, genes related to auxin buildup were downregulated in irradiated potatoes. The change in the endogenous phytohormone contents in irradiated potato with respect to the control were found to be correlated well with the differential expression level of certain related genes. Irradiated potatoes showed retention of processing attributes including cooking and chip-making qualities, which could be attributed to the elevated expression of invertase inhibitor in these tubers. Further, quality retention in radiation treated potatoes may also be related to inhibition in the physiological changes due to sprout inhibition. Ecological and economical analysis of national and global data showed that successful adoption of radiation processing may gradually replace sprout suppressants like isopropyl N-(3-chlorophenyl) carbamate (CIPC), known to leave residue in the commodity, stabilize the wholesale annual market price, and provide a boost to the industries involved in product manufacturing.

Living lab modelling as a pilot study assessing the potential psychological health benefits of forest environment for cancer survivors.

To evaluate the physiological and psychological changes in cancer survivors who engage in repeated forest therapy in a living environment. This study included stay-based forest therapy for female cancer survivors aged ≥40 years. The program was conducted in two cycles, each spanning 3 weeks and consisting of a 2-night, 3-day stay, followed by daily life integration. The cycles were repeated from July 2, 2022, to August 18, 2022. Participant assessment included standard physical health parameters and a questionnaire on general characteristics, lifestyle habits, stress levels, and health status. Thirty-seven female cancer survivors participated in the forest healing program, 56.8% of whom had a history of breast cancer. The median body mass index (BMI) was 23.80 kg/m2 (range, 21.00-25.60). More than half of the patients reported mild-to-moderate fatigue, chronic pain, and mild-to-moderate depression (81%, 65%, and 73%, respectively). After two cycles of forest therapy, no significant differences were observed in terms of fatigue, pain, or BMI levels. However, significant improvements were found in quality of life measures, particularly the psychological quality of life (mean score 12.54 at baseline vs. 13.48 after cycle 2; P=0.007). Positive improvements were also observed in terms of stress (mean score 17.03 vs. 13.76; P=0.002) and depression (mean score 8.35 vs. 6.11; P=0.002) levels. Our forest-healing program demonstrated that nature-based therapies improve the mental health and quality of life of female cancer survivors, suggesting the need for further research on nature-based interventions to better support cancer survivors.

Characterizing dehydration in short-term spaceflight using evidence from Project Mercury

Short-term spaceflight is commonly perceived as posing minimal risk to human health and performance. However, despite their duration, short-term flights potentially induce acute physiological changes that create risk to crews. One such change is dehydration (primarily body water loss) due to a heat-stressed environment. Such loss, if severe and prolonged, can lead to decrements in performance as well as increase the risk of more serious medical conditions. Though the general mechanisms of dehydration are broadly understood, the rate and extent of dehydration in short-term spaceflight has not been characterized. Combining data from the six spaceflights of the US Mercury program with a causal diagram illustrating the mechanisms of dehydration, we fit a path model to estimate the causal effects for all pathways in the causal model. Results demonstrate that Mercury astronauts experienced some degree of dehydration across the range of suited time and that the relationship between suited time and dehydration appears to be logarithmic. We discuss causal interpretations of the results and how the results from this and similar analyses can inform countermeasure development for short-term spaceflight.

Progress in The Application of Flexible and Wearable Electrochemical Sensors in Monitoring Biomarkers of Athletes

AbstractAthletes continuously seek out creative methods and technologies to improve their physical fitness and overall performance. Wearable technology's progress offers a swift and eco‐conscious way to consistently observe physiological changes evidenced by biomarkers, stemming from an athlete's internal exertion or external workload. However, there is still a long distance to further understand the internal physiology of athletes which may bring hope to tailor training and recovery programs individually. The ongoing challenges faced by sports healthcare personnel are in finding biomarkers safely and continuously to control athletes' physical condition and tailor their recovery and eating patterns. The summary of this review encompasses the development of flexible and wearable electrochemical sensors. This article provides an overview of biofluids, commonly detected by wearable biochemical sensors and their mutual anatomical formations, with a focus on sweat and its associated biomarkers. Following this, its real‐world application in sports medicine becomes apparent, both theoretically and potentially. The paper ends by highlighting challenges and imagining the possible development of this exciting emerging field.