The precise measurement of cell temperature and an in-depth understanding of thermogenic processes are critical in unraveling the complexities of cellular metabolism and its implications for health and disease. This review focuses on the mechanisms of local temperature generation within cells and the array of methods developed for accurate temperature assessment. The contact and noncontact techniques are introduced, including infrared thermography, fluorescence thermometry, and other innovative approaches to localized temperature measurement. The role of thermogenesis in cellular metabolism, highlighting the integral function of temperature regulation in cellular processes, environmental adaptation, and the implications of thermogenic dysregulation in diseases such as metabolic disorders and cancer are further discussed. The challenges and limitations in this field are critically analyzed while technological advancements and future directions are proposed to overcome these barriers. This review aims to provide a consolidated resource for current methodologies, stimulate discussion on the limitations and challenges, and inspire future innovations in the study of cellular thermodynamics.

• MeSH
• lidé MeSH
• teplota MeSH
• termogeneze * fyziologie   MeSH
• termografie * metody   MeSH
• termometrie metody   MeSH
• zvířata MeSH
• Check Tag
• lidé MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

Feruloyl esterases (FAEs) are a crucial component of the hemicellulose-degrading enzyme family that facilitates the degradation of lignocellulose while releasing hydroxycinnamic acids such as ferulic acid with high added value. Currently, the low enzyme yield of FAEs is one of the primary factors limiting its application. Therefore, in this paper, we optimized the fermentation conditions for the expression of FAE BpFaeT132C-D143C with excellent thermal stability in Escherichia coli by experimental design. Firstly, we explored the effects of 11 factors such as medium type, isopropyl-β-D-thiogalactopyranoside (IPTG) concentration, and inoculum size on BpFaeT132C-D143C activity separately by the single factor design. Then, the significance of the effects of seven factors, such as post-induction temperature, shaker rotational speed, and inoculum size on BpFaeT132C-D143C activity, was analyzed by Plackett-Burman design. We identified the main factors affecting the fermentation conditions of E. coli expressing BpFaeT132C-D143C as post-induction temperature, pre-induction period, and post-induction period. Finally, we used the steepest ascent path design and response surface method to optimize the levels of these three factors further. Under the optimal conditions, the activity of BpFaeT132C-D143C was 3.58 U/ml, which was a significant 6.6-fold increase compared to the pre-optimization (0.47 U/ml), demonstrating the effectiveness of this optimization process. Moreover, BpFaeT132C-D143C activity was 1.52 U/ml in a 3-l fermenter under the abovementioned optimal conditions. It was determined that the expression of BpFaeT132C-D143C in E. coli was predominantly intracellular in the cytoplasm. This study lays the foundation for further research on BpFaeT132C-D143C in degrading agricultural waste transformation applications.

• MeSH
• Escherichia coli * genetika   metabolismus   enzymologie   MeSH
• fermentace * MeSH
• isopropylthiogalaktosid metabolismus   MeSH
• karboxylesterhydrolasy * genetika   metabolismus   chemie   biosyntéza   MeSH
• kultivační média chemie   MeSH
• kyseliny kumarové metabolismus   MeSH
• lignin MeSH
• rekombinantní proteiny genetika   metabolismus   biosyntéza   chemie   MeSH
• stabilita enzymů MeSH
• teplota MeSH
• Publikační typ
• časopisecké články MeSH

Azo dyes are used as coloring agent in textile industries at larger scale. As a result, large quantity of dye-enriched waste water is generated which subsequently poses environmental problems. Biological tool involving bacteria having azoreductase enzyme has proved to be more effective and efficient in dye effluent treatment. Current work focuses on Staphylococcus caprae (S. caprae) for degradation and decolorization of Reactive Red-195 (RR-195) azo dye. For this purpose, factors such as pH, temperature, inoculums, carbon and nitrogen sources, and dye concentrations have been optimized for maximum decolorization and degradation. S. caprae (4 mg/mL) efficiently resulted into 90% decolorization of RR-195 dye under static condition at 100 μg/mL concentration, 30 °C and pH 7.0 at a 12-h contact period. FTIR analysis has revealed the formation of new functional groups in the treated dye such as O-H stretch at 3370 cm-1, C-H band stretching at 2928 cm-1, and new band at 1608 cm-1 which specify the degradation of aromatic ring, 1382 and 1118 cm-1 represents desulfonated peaks. Biodegraded metabolites of RR-195 dye such as phenol, 3, 5-di-tert-butylphenol, and phthalic acid have been identified respectively that find industrial applications. Phytotoxicity test has shown non-toxic effects of treated dye on germination of Vigna radiata and Triticum aestivum seeds. Further, antibiotic diffusion assay has confirmed the biosafety of S. caprae.

• MeSH
• azosloučeniny * metabolismus   toxicita   MeSH
• barvicí látky * metabolismus   MeSH
• biodegradace * MeSH
• chemické látky znečišťující vodu metabolismus   MeSH
• dusík metabolismus   MeSH
• koncentrace vodíkových iontů MeSH
• odpadní voda * mikrobiologie   chemie   MeSH
• průmyslový odpad MeSH
• Staphylococcus capitis metabolismus   izolace a purifikace   MeSH
• Staphylococcus metabolismus   MeSH
• teplota MeSH
• textilie MeSH
• textilní průmysl MeSH
• uhlík metabolismus   MeSH
• Publikační typ
• časopisecké články MeSH

Východiská: Na význam stresu pri nádorových chorobách poukazovali lekári už od čias Galéna. Avšak až v posledných dvoch desaťročiach umožnil kombinovaný onkologický a neurovedný výskum exaktne preskúmať tento vzťah a popísať dráhy a mechanizmy, ktoré sprostredkúvajú stimulačný vplyv stresu na nádorový proces. Tento nepriaznivý účinok stresu je sprostredkovaný hlavne mediátormi sympatikoadrenálneho systému, noradrenalínom a adrenalínom. Tieto katecholamíny aktiváciou adrenergických receptorov v nádorovom mikro- a makroprostredí stimulujú proliferáciu nádorových buniek a neoangiogenézu a inhibujú protinádorovú imunitu a znižujú účinnosť štandardnej protinádorovej liečby. Zistilo sa tiež, že intervencie obmedzujúce pôsobenie stresu na organizmus nie len že zlepšujú kvalitu života onkologických pacientov, ale môžu zlepšovať aj ich prežívanie. Vzhľadom na komplexnosť vplyvu stresu na organizmus sa experimentálne a klinické štúdie v prevažnej väčšine zameriavajú na skúmanie účinku jednej intervencie obmedzujúcej stimulačný vplyv sympatikoadrenálneho systému na nádorový proces. Cieľ: Zámerom tohto názorového článku je poukázať na možnosť synergického účinku kombinácie viacerých intervencií obmedzujúcich aktiváciu sympatikoadrenálneho systému a na základe dostupných údajov navrhnúť takú kombináciu týchto intervencií, ktorá je aplikovateľná v podpornej liečbe onkologických pacientov už aj v súčasnosti. Záver: Protokol Synergy, ktorý zahŕňa nefarmakologické intervencie zamerané na obmedzenie pôsobenia stresu, má potenciál zlepšiť kvalitu života a u určitých pacientov aj prognózu ich choroby. Zavedenie tohto protokolu do bežnej klinickej praxe síce bude vyžadovať vyriešenie personálnych a finančných aspektov, ktoré s jeho implikáciou súvisia, výsledkom ale môže byť významné zvýšenie úrovne starostlivosti o onkologických pacientov.

Background: The importance of stress in cancer has been noted by physicians since the time of Galen. However, it is only in the last two decades that combined oncological and neuroscientific research has allowed to explore this relationship in an exact way and to describe the pathways and mechanisms that mediate the stimulatory effect of stress on cancer. This adverse effect of stress is mediated mainly by the mediators of the sympathoadrenal system, norepinephrine and epinephrine, which, by activating adrenergic receptors in the tumor micro- and macro-environment, stimulate tumor cell proliferation and neoangiogenesis and inhibit antitumor immunity, reducing the efficacy of standard anticancer therapies. It has also been found that interventions reducing the effects of stress on the body not only improve the quality of life of cancer patients but may also improve their survival. Given the complexity of the impact of stress on the organism, experimental and clinical studies have overwhelmingly focused on investigating the effect of a single intervention reducing the stimulatory influence of the sympathoadrenal system on the cancer process. Purpose: The aim of this opinion article is to highlight the possibility of a synergistic effect of a combination of several interventions limiting the activation of the sympathoadrenal system and, based on the available data, to propose a combination of these interventions that is applicable in the supportive treatment of cancer patients even nowadays. Conclusion: The Protocol Synergy, which includes non-pharmacological interventions aimed at reducing the effects of stress on the cancer patient, has the potential to improve the quality and, in certain patients, the prognosis of their disease. Although the introduction of this protocol into routine clinical practice will require addressing the personnel and financial aspects associated with its implementation, it has the potential to significantly improve the level of care for cancer patients.

• MeSH
• beta blokátory terapeutické užití   MeSH
• cvičení MeSH
• klinické protokoly * MeSH
• kvalita života psychologie   MeSH
• lidé MeSH
• nádory * etiologie   psychologie   MeSH
• nízká teplota škodlivé účinky   MeSH
• psychický stres * MeSH
• psychoterapie metody   MeSH
• relaxační terapie MeSH
• srdeční frekvence MeSH
• svépomocné skupiny MeSH
• sympatoadrenální systém MeSH
• Check Tag
• lidé MeSH

Spray drying and hot-melt extrusion are among the most prevalent preparation techniques used in the pharmaceutical industry to produce amorphous solid dispersions (ASDs). This study advances previous research by integrating sample production, comprehensive analytical characterization, intrinsic dissolution rate measurements, and assessments of the behavior of ASDs under elevated temperature and humidity conditions. The study focuses on indomethacin, a widely used model for poorly soluble drugs, processed with PVP K30 or HPMC E5, both commonly used polymers. The findings demonstrate that hot-melt extruded samples exhibit superior stability against recrystallization, whereas spray dried samples achieve higher intrinsic dissolution rates. Furthermore, PVP K30 significantly outperforms HPMC E5 in the co-processing of indomethacin, enhancing both the intrinsic dissolution rate and the stability.

• MeSH
• deriváty hypromelózy chemie   MeSH
• farmaceutická chemie metody   MeSH
• indomethacin * chemie   MeSH
• krystalizace * MeSH
• povidon chemie   MeSH
• příprava léků metody   MeSH
• rozpustnost * MeSH
• sprejové sušení * MeSH
• stabilita léku * MeSH
• technologie extruze tavenin * metody   MeSH
• uvolňování léčiv MeSH
• vlhkost MeSH
• vysoká teplota MeSH
• vysoušení metody   MeSH
• Publikační typ
• časopisecké články MeSH

The impacts of climate change on human health are often underestimated or perceived to be in a distant future. Here, we present the projected impacts of climate change in the context of COVID-19, a recent human health catastrophe. We compared projected heat mortality with COVID-19 deaths in 38 cities worldwide and found that in half of these cities, heat-related deaths could exceed annual COVID-19 deaths in less than ten years (at + 3.0 °C increase in global warming relative to preindustrial). In seven of these cities, heat mortality could exceed COVID-19 deaths in less than five years. Our results underscore the crucial need for climate action and for the integration of climate change into public health discourse and policy.

• MeSH
• COVID-19 * mortalita   epidemiologie   MeSH
• klimatické změny * MeSH
• lidé MeSH
• SARS-CoV-2 * izolace a purifikace   MeSH
• velkoměsta MeSH
• veřejné zdravotnictví MeSH
• vysoká teplota * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Geografické názvy
• velkoměsta MeSH

Pseudomonas mandelii SW-3, isolated from the Napahai plateau wetland, can survive in cold environments. The mechanisms underlying the survival of bacteria in low temperatures and high altitudes are not yet fully understood. In this study, the whole genome of SW-3 was sequenced to identify the genomic features that may contribute to survival in cold environments. The results showed that the genome size of strain SW-3 was 6,538,059 bp with a GC content of 59%. A total of 67 tRNAs, a 34,110 bp prophage sequence, and a large number of metabolic genes were found. Based on 16S rRNA gene phylogeny and average nucleotide identity analysis among P. mandelii, SW-3 was identified as a strain belonging to P. mandelii. In addition, we clarified the mechanisms by which SW-3 survived in a cold environment, providing a basis for further investigation of host-phage interaction. P. mandelii SW-3 showed stress resistance mechanisms, including glycogen and trehalose metabolic pathways, and antisense transcriptional silencing. Furthermore, cold shock proteins and glucose 6-phosphate dehydrogenase may play pivotal roles in facilitating adaptation to cold environmental conditions. The genome-wide analysis provided us with a deeper understanding of the cold-adapted bacterium.

• MeSH
• DNA bakterií genetika   MeSH
• fylogeneze * MeSH
• fyziologická adaptace * genetika   MeSH
• genom bakteriální * MeSH
• nízká teplota * MeSH
• profágy genetika   MeSH
• Pseudomonas * genetika   klasifikace   MeSH
• RNA ribozomální 16S * genetika   MeSH
• sekvenování celého genomu MeSH
• zastoupení bazí MeSH
• Publikační typ
• časopisecké články MeSH

This study summarizes the response of cyanobacterium Spirulina subsalsa HKAR-19 under simulated light conditions of photosynthetically active radiation (PAR), PAR+UV-A (PA), and PAR+UV-A+UV-B (PAB). Exposure to UV radiation caused a significant (P < 0.05) decrease in chlorophyll a, phycocyanin, and total protein. In contrast, total carotene content increased significantly (P < 0.05) under PA and PAB with increasing irradiation time. The photosynthetic efficiency of photosystem II also decreased significantly in PA and PAB radiation. We have also recorded a decrease in the fluorescence emission intensity of phycocyanin under PA and PAB exposure. The phycocyanin fluorescence shifted towards shorter wavelengths (blue-shift) after 72 h of PA and PAB exposure. Intracellular reactive oxygen species (ROS) levels increased significantly in PA and PAB. Fluorescence microscopic images showed an increase in green fluorescence, indicating ROS generation in UV radiation. We have also quantified ROS generation using green and red fluorescence ratio represented as G/R ratio. A 2-6-fold increase in antioxidative enzymes activity was observed to overcome the damaging effects caused by UV stress as compared to untreated control cultures. The lipid peroxidation was assessed in terms of malondialdehyde content which increases significantly (P < 0.05) as the duration of exposure increases. These results suggest that a combined effect of PAR, UV-A, and UV-B was more deleterious than an individual one.

• MeSH
• antioxidancia * metabolismus   MeSH
• chlorofyl a metabolismus   MeSH
• chlorofyl * metabolismus   MeSH
• fotosyntéza * účinky záření   MeSH
• fotosystém II (proteinový komplex) metabolismus   MeSH
• fykocyanin * metabolismus   MeSH
• karotenoidy metabolismus   MeSH
• peroxidace lipidů účinky záření   MeSH
• reaktivní formy kyslíku * metabolismus   MeSH
• Spirulina * účinky záření   metabolismus   MeSH
• ultrafialové záření * MeSH
• Publikační typ
• časopisecké články MeSH

• Klíčová slova
• sunning,
• MeSH
• lidé MeSH
• počítače MeSH
• poruchy zraku * prevence a kontrola   MeSH
• sluneční záření MeSH
• tma MeSH
• Check Tag
• lidé MeSH

OBJECTIVES: Due to poor treatment adherence and lifestyle-based interventions, chronic hypertension is a dominant risk factor predisposing individuals to heart failure and malignant arrhythmias. We investigated the impact of the postnatal acclimation of hairless SHR to ambient temperature that is, for them, below thermoneutrality, on the electrical coupling protein connexin-43 (Cx43) and pro-fibrotic markers in both heart ventricles of male and female hairless SHR rats compared to the wild SHR. METHODS: Some 6-month-acclimated male and female hairless SHR as well as age- and sex-matched wild SHR were included and compared with the non-hypertensive Wistar strain. The left and right heart ventricles were examined for Cx43 topology, myocardial structure, and the histochemistry of capillaries. The protein levels of Cx43, relevant protein kinases, and extracellular matrix proteins (ECMs) were determined by immunoblotting. MMP-2 activity was assessed via zymography, and susceptibility to malignant arrhythmias was tested ex vivo. RESULTS: Cx43 and its phosphorylated variant pCx43368 were significantly reduced in the left heart ventricles of wild SHR males, while to a lesser extent in the hairless SHR. In contrast, these proteins were not significantly altered in the right heart ventricles of males or in both heart ventricles in females, regardless of the rat strain. Pro-arrhythmic Cx43 topology was detected in the left heart ventricle of wild SHR and to a lesser extent in hairless SHR males. TGFβ protein was significantly increased only in the left ventricle of the wild SHR males. MMP-2 activity was increased in the right ventricle but not in the left ventricles of both males and females, regardless of the rat strain. CONCLUSIONS: The findings indicate that the postnatal acclimation of hairless SHR to ambient temperature hampers the downregulation of Cx43 in the left heart ventricle compared to wild SHR males. The decline of Cx43 was much less pronounced in females and not observed in the right heart ventricles, regardless of the rat strain. It may impact the susceptibility of the heart to malignant arrhythmias.

• MeSH
• aklimatizace MeSH
• down regulace MeSH
• hypertenze * metabolismus   MeSH
• konexin 43 * metabolismus   genetika   MeSH
• krysa rodu rattus MeSH
• potkani inbrední SHR * MeSH
• potkani Wistar MeSH
• srdeční arytmie * metabolismus   etiologie   MeSH
• srdeční komory * metabolismus   MeSH
• teplota * MeSH
• zvířata MeSH
• Check Tag
• krysa rodu rattus MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH