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Characterization and Industrial Application of the Enzyme Papain Through the Use of a Biosensor. 利用生物传感器表征木瓜蛋白酶及其工业应用。
IF 2
Cellular Physiology and Biochemistry Pub Date : 2025-09-13 DOI: 10.33594/000000813
Guilber Vergara Velez, Lorena Daniela Domínguez Brito, Melissa Lisbeth Cerón Erazo, Rodolfo Andrés Rivadeneira Z, Frank Guillermo Intriago Flor, Andrés Miguel Anchundia Loor, Yanelis Ramos Alfonso, Vladimir Álvarez Ojeda, José Francisco Díaz Izurieta, Jorge Tumbaco, Felipe Jadán Piedra
{"title":"Characterization and Industrial Application of the Enzyme Papain Through the Use of a Biosensor.","authors":"Guilber Vergara Velez, Lorena Daniela Domínguez Brito, Melissa Lisbeth Cerón Erazo, Rodolfo Andrés Rivadeneira Z, Frank Guillermo Intriago Flor, Andrés Miguel Anchundia Loor, Yanelis Ramos Alfonso, Vladimir Álvarez Ojeda, José Francisco Díaz Izurieta, Jorge Tumbaco, Felipe Jadán Piedra","doi":"10.33594/000000813","DOIUrl":"10.33594/000000813","url":null,"abstract":"<p><strong>Background/aims: </strong>Casein influences coagulation, yield, and product quality. This study aimed to develop and validate a papain (EC 3.4.22.2)-based biosensor to quantify casein in whole milk, evaluating its kinetic behavior and comparing it with HPLC.</p><p><strong>Methods: </strong>Papain was immobilized on nylon membranes and a cassava starch biopolymer. Enzyme kinetics (KM), stability, sensitivity, precision, and linearity of the system were evaluated. A t-test (α = 0.05) was applied to compare the casein concentration obtained by the biosensor versus HPLC (n = 20). Interference from milk proteins and calcium was also analyzed.</p><p><strong>Results: </strong>The biosensor showed high affinity for casein (KM = 0.037 mM), with a linear range of 0.001-0.03 mM (R² = 0.9974) and a response time <5 s. No significant differences were found with HPLC (p = 0.0665). Stability reached 70 days at 4°C and was reusable up to 15 times.</p><p><strong>Conclusion: </strong>The developed biosensor proved to be an accurate, fast, and sustainable analytical alternative for the determination of casein in complex milk matrices.</p>","PeriodicalId":9845,"journal":{"name":"Cellular Physiology and Biochemistry","volume":"59 5","pages":"620-630"},"PeriodicalIF":2.0,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145069097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SIRPα is An Inhibitory Receptor That Regulates NK Cell Activation and Function. SIRPα是一种调节NK细胞活化和功能的抑制受体。
IF 2
Cellular Physiology and Biochemistry Pub Date : 2025-09-13 Epub Date: 2025-09-30 DOI: 10.33594/000000816
Lamin B Cham, Thamer A Hamdan, Hilal Bhat, Khaled Saeed Tabbara, Eman Farid, Mohamed Ridha Barbouche, Tom Adomati
{"title":"SIRPα is An Inhibitory Receptor That Regulates NK Cell Activation and Function.","authors":"Lamin B Cham, Thamer A Hamdan, Hilal Bhat, Khaled Saeed Tabbara, Eman Farid, Mohamed Ridha Barbouche, Tom Adomati","doi":"10.33594/000000816","DOIUrl":"https://doi.org/10.33594/000000816","url":null,"abstract":"<p><strong>Background/aims: </strong>Signal regulatory protein alpha (SIRPα) is an inhibitory receptor expressed on macrophages and dendritic cells. Recent cancer research studies have reported evidence of upregulation of SIRPα on natural killer (NK) cells. The present study aimed to investigate the role of SIRPα in NK cells during viral infection.</p><p><strong>Methods: </strong>We utilized SIRPα knockout mice (SIRPα-/-) and lymphocytic choriomeningitis virus (LCMV) infection to examine the role of SIRPα in NK cells. Flow cytometry, in vivo killing assays, and molecular analyses were performed to assess NK cell activation, cytotoxic function, and associated signaling pathways.</p><p><strong>Results: </strong>SIRPα expression was induced on NK cells during LCMV infection. The absence of SIRPα in knockout mice resulted in an increased proportion and activation of NK cells, with enhanced expression of cytotoxic markers and augmented NK cell-mediated killing of target cells. Mechanistically, loss of SIRPα was associated with downregulation of Src homology region 2-containing protein tyrosine phosphatase-1 (SHP-1) in NK cells. Importantly, SIRPα deficiency led to concomitant loss of CD8+ T cells and impaired viral control. In vivo killing assays indicated that activated NK cells mediated CD8+ T cell depletion in SIRPα-/- mice. Experimental NK cell depletion in these mice partially restored T cell immunity, reduced immunopathology, and improved viral clearance.</p><p><strong>Conclusion: </strong>Our findings identify SIRPα as a critical inhibitory receptor that regulates NK cell effector functions. Loss of SIRPα unleashes NK cell activity but results in CD8+ T cell depletion and impaired antiviral immunity, highlighting the dual role of SIRPα in balancing NK cell activation and adaptive immune responses.</p>","PeriodicalId":9845,"journal":{"name":"Cellular Physiology and Biochemistry","volume":"59 5","pages":"652-665"},"PeriodicalIF":2.0,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145231432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mast Cell Response to Parasites: from Recognition and Activation to Host Defense Modulation. 肥大细胞对寄生虫的反应:从识别和激活到宿主防御调节。
IF 2
Cellular Physiology and Biochemistry Pub Date : 2025-09-13 Epub Date: 2025-09-29 DOI: 10.33594/000000815
Paulina Żelechowskaa, Aleksandra Góralczyk-Bińkowskaa
{"title":"Mast Cell Response to Parasites: from Recognition and Activation to Host Defense Modulation.","authors":"Paulina Żelechowskaa, Aleksandra Góralczyk-Bińkowskaa","doi":"10.33594/000000815","DOIUrl":"https://doi.org/10.33594/000000815","url":null,"abstract":"<p><p>Parasites represent a diverse and widely distributed group of pathogens that cause diseases with significant global health implications. The interaction between parasite and host is characterized by a high degree of complexity, with both parties continuously adapting to changes in the other. The successful host invasion is largely attributable to the evasion strategies employed by parasites to ensure their survival in immunocompetent individuals. In turn, the host's defense mechanisms utilize a variety of structures and processes, ranging from primary barriers to the most sophisticated ones, to counter the parasite attack. Acting as an early line of defense, the immune system includes a variety of cell types that are capable of recognizing, destroying, and eliminating infectious agents. Undoubtedly, the orchestration of first-line innate immune responses but also adaptive immunity processes during infection depends to a large extent on the involvement of tissue-resident mast cells (MCs). MCs are capable of supporting immune reactions to parasites through a broad spectrum of processes, including degranulation, synthesis and release of cytokines/chemokines and other mediators, and the generation of reactive oxygen species (ROS). They may also be involved in immune cell recruitment, phagocytosis, and the provision of extracellular DNA traps. Despite the well documented association of MCs with antibacterial and antiviral defense, their role in host protection against parasites remains incompletely identified. This article provides an overview of the engagement of MCs in host defense mechanisms developed during parasitic infections. Furthermore, it considers the impact of parasites or parasite-derived molecules on the various aspects of MC activity.</p>","PeriodicalId":9845,"journal":{"name":"Cellular Physiology and Biochemistry","volume":"59 5","pages":"631-651"},"PeriodicalIF":2.0,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145231495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Association Between DRD4 rs747302 and VNTR Polymorphisms and Drug Addiction in An Iraqi Population. 伊拉克人群中DRD4 rs747302和VNTR多态性与药物成瘾的关系
IF 2
Cellular Physiology and Biochemistry Pub Date : 2025-09-08 DOI: 10.33594/000000812
Shaymaa A H Kadhim, Ahmed F Neamaa, Yomna I Mahmoud, Monir A Al-Ganzuri
{"title":"Association Between DRD4 rs747302 and VNTR Polymorphisms and Drug Addiction in An Iraqi Population.","authors":"Shaymaa A H Kadhim, Ahmed F Neamaa, Yomna I Mahmoud, Monir A Al-Ganzuri","doi":"10.33594/000000812","DOIUrl":"10.33594/000000812","url":null,"abstract":"<p><strong>Background/aims: </strong>Drug addiction is a neuropsychiatric disorder characterised by compulsive drug-seeking behaviour notwithstanding adverse consequences. This work seeks to address a deficiency in the literature by comparing drug-addicted and non-addicted individuals within an Iraqi population through the analysis of a 1000-base pair variable number of tandem repeats (VNTRs) polymorphism of the dopamine receptor gene DRD4. The association of this novel polymorphism with drug addiction has not yet been examined.</p><p><strong>Methods: </strong>A total of 270 people were registered between May 2022 and June 2023. Of these, 180 had drug addictions and 90 were healthy controls. DNA was extracted from the participants' blood samples. Restriction Fragment Length Polymorphism was used to investigate genetic polymorphisms in the DRD4 and VNTR genes to identify differences.</p><p><strong>Results: </strong>The genotype frequencies differed markedly between the control group (GC, 3% frequency) and the patient group (GC, 37% frequency). The control group had more of the genotype that was more common among addicts. The C allele was present in 60% of the patients but in only 1% of the controls. The results showed that the CC genotype is more common in the patient group than in the control group. A comparison of repetitions between the control and patient groups was made based on the distribution of genotypes of SNP rs747302. Patients with the GG genotype had an average of 17 repetitions, whereas those with the GC genotype had 18, and those with the CC genotype had 18.3. The results showed that people in the CC genotype group had a lot more repetitions.</p><p><strong>Conclusion: </strong>The results of our study indicated that the CC, GC, and VNTR genotypes significantly contribute to heroin addiction risk in Iraqis.</p>","PeriodicalId":9845,"journal":{"name":"Cellular Physiology and Biochemistry","volume":"59 5","pages":"609-619"},"PeriodicalIF":2.0,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145029069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced ISGylation via USP18 Isopeptidase Inactivation Fails to Mitigate the Inflammatory or Functional Course of Coxsackievirus B3-Induced Myocarditis. 通过USP18异肽酶失活增强isg酰化不能减轻柯萨奇病毒b3诱导的心肌炎的炎症或功能过程
IF 2
Cellular Physiology and Biochemistry Pub Date : 2025-09-07 DOI: 10.33594/000000811
Nicolas Kelm, Meike Kespohl, Sophia Borowski, Sarah Ochs, Klaus-Peter Knobeloch, Lisa Gerarda Maria Huis In 't Veld, Karin Klingel, Antje Beling
{"title":"Enhanced ISGylation via USP18 Isopeptidase Inactivation Fails to Mitigate the Inflammatory or Functional Course of Coxsackievirus B3-Induced Myocarditis.","authors":"Nicolas Kelm, Meike Kespohl, Sophia Borowski, Sarah Ochs, Klaus-Peter Knobeloch, Lisa Gerarda Maria Huis In 't Veld, Karin Klingel, Antje Beling","doi":"10.33594/000000811","DOIUrl":"https://doi.org/10.33594/000000811","url":null,"abstract":"<p><strong>Background/aims: </strong>The ubiquitin-like protein ISG15 and its covalent conjugation to substrates (ISGylation) represent a critical interferon (IFN)-induced antiviral mechanism. USP18 is an ISG15-specific isopeptidase and a key negative regulator of type I IFN signaling. While inactivation of USP18's catalytic activity enhances ISGylation and promotes viral resistance, its role in modulating inflammation and cardiac function during CVB3-induced myocarditis remains unclear. This study aimed to determine whether selective inactivation of USP18 isopeptidase activity influences the inflammatory and functional course of viral myocarditis.</p><p><strong>Methods: </strong>Usp18 C61A/C61A knock-in mice, which lack USP18 isopeptidase activity but retain IFN regulatory function, were used on both C57BL/6 and A/J backgrounds. Mice were infected with the cardiotropic CVB3-Nancy strain, and disease progression was assessed through virological, histological, immunological, and echocardiographic analyses. Immune cell infiltration was quantified by flow cytometry, and ISGylation was assessed by immunoblotting.</p><p><strong>Results: </strong>Despite enhanced ISGylation, Usp18 C61A/C61A mice did not exhibit altered cardiac viral titers or inflammation compared to wild-type controls. Histological scores and immune cell composition in the heart were similar between genotypes in both C57BL/6 and A/J backgrounds. Echocardiography confirmed functional impairment following CVB3 infection but revealed no significant genotype-dependent differences in cardiac performance. Inflammatory cytokine expression was largely unaffected by enhanced ISGylation, with only minor differences observed.</p><p><strong>Conclusion: </strong>While ISGylation is critical for antiviral protection in CVB3 infection, selective inactivation of USP18 isopeptidase activity does not mitigate myocardial inflammation or dysfunction during established CVB3 myocarditis. These findings suggest that therapeutic enhancement of ISGylation alone may be insufficient to control inflammation-driven cardiac damage in this model.</p>","PeriodicalId":9845,"journal":{"name":"Cellular Physiology and Biochemistry","volume":"59 S3","pages":"1-21"},"PeriodicalIF":2.0,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145029052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Migrasomes in Health and Disease: Insights into Mechanisms, Pathogenesis, and Therapeutic Opportunities. 健康和疾病中的偏头痛:对机制、发病机制和治疗机会的见解。
IF 2
Cellular Physiology and Biochemistry Pub Date : 2025-09-06 DOI: 10.33594/000000810
Lauryn Akeme, Pollyanna Sibanda, Aisling Fitzgerald, Agnieszka Bossowska, Klaudia Bonowicz, Dominika Jerka, Maciej Gagat
{"title":"Migrasomes in Health and Disease: Insights into Mechanisms, Pathogenesis, and Therapeutic Opportunities.","authors":"Lauryn Akeme, Pollyanna Sibanda, Aisling Fitzgerald, Agnieszka Bossowska, Klaudia Bonowicz, Dominika Jerka, Maciej Gagat","doi":"10.33594/000000810","DOIUrl":"https://doi.org/10.33594/000000810","url":null,"abstract":"<p><p>Migrasomes are newly discovered, migration-dependent organelles that mediate the release of cellular contents into the extracellular environment through a process known as migracytosis. Since their identification in 2014, growing evidence has highlighted their critical roles in intercellular communication, organ development, mitochondrial quality control, and disease pathogenesis. Migrasome biogenesis is a complex, multi-step process tightly regulated by lipid composition, tetraspanin-enriched microdomains, and molecular pathways involving sphingomyelin synthase 2, Rab35, and integrins. Unlike exosomes, migrasomes possess distinct structural and functional characteristics, which position them as novel organelles rather than classic extracellular vesicles. Recent studies have revealed their involvement in diverse pathological contexts, including kidney disease, cancer progression, proliferative vitreoretinopathy, viral infections, and myocardial infarction. Notably, migrasomes hold promise as diagnostic biomarkers, especially in early podocyte injury, and as therapeutic targets in oncology and regenerative medicine. This review summarizes the current understanding of migrasome biology, and their implications in health and disease, and explores emerging perspectives on harnessing migrasomes for diagnostic and therapeutic applications.</p>","PeriodicalId":9845,"journal":{"name":"Cellular Physiology and Biochemistry","volume":"59 5","pages":"589-608"},"PeriodicalIF":2.0,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Macrophage Migration Inhibitory Factor: Its Multifaceted Role in Inflammation and Immune Regulation Across Organ Systems. 巨噬细胞迁移抑制因子在各器官系统炎症和免疫调节中的多重作用。
IF 2
Cellular Physiology and Biochemistry Pub Date : 2025-09-03 DOI: 10.33594/000000809
Aygun Aliyarbayova, Tamilla Sultanova, Samira Yaqubova, Tarana Najafova, Gulnara Sadiqova, Aytan Salimova
{"title":"Macrophage Migration Inhibitory Factor: Its Multifaceted Role in Inflammation and Immune Regulation Across Organ Systems.","authors":"Aygun Aliyarbayova, Tamilla Sultanova, Samira Yaqubova, Tarana Najafova, Gulnara Sadiqova, Aytan Salimova","doi":"10.33594/000000809","DOIUrl":"https://doi.org/10.33594/000000809","url":null,"abstract":"<p><p>Macrophage Migration Inhibitory Factor (MIF) is a pleiotropic cytokine that acts as a central regulator of inflammation and immune responses across diverse organ systems. Functioning upstream in immune activation cascades, MIF influences macrophage polarization, T and B cell differentiation, and cytokine expression through CD74, CXCR2/4/7, and downstream signaling via NF-κB, ERK1/2, and PI3K/AKT pathways. This review provides a comprehensive analysis of MIF's mechanistic functions under both physiological and pathological conditions, highlighting its dual role as a protective mediator during acute stress and as a pro-inflammatory amplifier in chronic disease. MIF's involvement in autoimmune disorders, neurodegeneration, metabolic syndromes, infectious diseases, and oncogenesis is examined, with particular attention to its contribution to immune dysregulation, immune escape, and the shaping of inflammatory microenvironments. Its clinical relevance as a biomarker is underscored by associations between elevated serum levels, polymorphic variants such as the -173 G>C SNP, and disease susceptibility, progression, and therapeutic response. Advances in therapeutic strategies are also discussed, including the development of small-molecule inhibitors, MIF-2-specific antagonists, CD74-targeted therapies, and gene-based interventions. Taken together, emerging evidence positions MIF as both a diagnostic indicator and a therapeutic target, with its broad regulatory functions across immune, vascular, and metabolic pathways emphasizing its relevance in precision immunotherapy and its potential to serve as a strategic axis in the future of translational medicine.</p>","PeriodicalId":9845,"journal":{"name":"Cellular Physiology and Biochemistry","volume":"59 5","pages":"569-588"},"PeriodicalIF":2.0,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Knockdown of UBD Ameliorates Experimental Rheumatoid Arthritis by Suppressing TLR4/Myd88/NF-κB and P38/MAPK Pathway. UBD基因下调通过抑制TLR4/Myd88/NF-κB和P38/MAPK通路改善实验性类风湿关节炎
IF 2
Cellular Physiology and Biochemistry Pub Date : 2025-09-01 DOI: 10.33594/000000808
Hong Chen, Sha Liu, Yu Zhang, Ooi Der Jun, Hua Wei
{"title":"Knockdown of UBD Ameliorates Experimental Rheumatoid Arthritis by Suppressing TLR4/Myd88/NF-κB and P38/MAPK Pathway.","authors":"Hong Chen, Sha Liu, Yu Zhang, Ooi Der Jun, Hua Wei","doi":"10.33594/000000808","DOIUrl":"https://doi.org/10.33594/000000808","url":null,"abstract":"<p><strong>Background/aims: </strong>Ubiquitin D (UBD), a member of the ubiquitin-like modifier (UBL) family, is significantly overexpressed in various cancers and is positively correlated with tumor progression. However, the role and underlying mechanisms of UBD in rheumatoid arthritis (RA) remain poorly understood. This study aimed to investigate the effects of UBD knockdown on the progression of RA.</p><p><strong>Materials: </strong>We employed the type II collagen and incomplete Freund's adjuvant (CIA) rat model. A variety of analytical techniques were employed, including hematoxylin and eosin (H&E) staining, Safranin O and Fast Green staining, tartrate-resistant acid phosphatase (TRAP) staining, enzyme-linked immunosorbent assay (ELISA), and Western blot analysis, to elucidate the mechanisms involved.</p><p><strong>Results: </strong>UBD knockdown correlated with diminished cartilage and bone erosion, reduced counts of TRAP-positive osteoclasts, and enhanced Safranin O staining of the cartilage. Additionally, the knockdown significantly reduced serum levels of PGE2, TNF-α, TIMP-1, IL-1β, MMP-9, and IL-6 in CIA rats. Furthermore, UBD knockdown markedly suppressed the expression levels of phosphorylated p38, TLR4, MyD88, and phosphorylated p65, suggesting a critical role in modulating inflammatory signaling pathways in RA.</p><p><strong>Conclusion: </strong>Collectively, these results suggested that knockdown of UBD significantly alleviated arthritis progression in the CIA rat model, highlighting UBD as a potential therapeutic target and a promising prognostic biomarker for RA.</p>","PeriodicalId":9845,"journal":{"name":"Cellular Physiology and Biochemistry","volume":"59 5","pages":"557-568"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Co-Immobilization of Trypsin and Lysine -α- Oxidase For the Quantification of Lysine in Casein Hydrolysate. Evaluation with a Biosensor. 胰蛋白酶与赖氨酸-α-氧化酶共固定化测定酪蛋白水解产物中赖氨酸含量。生物传感器评价。
IF 2
Cellular Physiology and Biochemistry Pub Date : 2025-08-25 DOI: 10.33594/000000803
Christian M Villavicencio Yanos, María Janina Cedeño Vivas, Grether Lucía Real Pérez, José Patricio Muñoz Murillo, Shirley Bethzabe Guamán, Ginger Jamileth Santana Moreira, Sara María Cantos, Vinicio Francisco Bolaños de la Torre, Rosa Mariuxi Litardo Velásquez, Felipe Jadán Piedra
{"title":"Co-Immobilization of Trypsin and Lysine -α- Oxidase For the Quantification of Lysine in Casein Hydrolysate. Evaluation with a Biosensor.","authors":"Christian M Villavicencio Yanos, María Janina Cedeño Vivas, Grether Lucía Real Pérez, José Patricio Muñoz Murillo, Shirley Bethzabe Guamán, Ginger Jamileth Santana Moreira, Sara María Cantos, Vinicio Francisco Bolaños de la Torre, Rosa Mariuxi Litardo Velásquez, Felipe Jadán Piedra","doi":"10.33594/000000803","DOIUrl":"https://doi.org/10.33594/000000803","url":null,"abstract":"<p><strong>Background/aims: </strong>The quantification of amino acids in the dairy industry is necessary for quality control and for the formulation of functional foods. Thus, the development of enzymatic biosensors requires a detailed study of enzyme kinetics. Parameters such as KM and Vmax are necessary to optimize the sensitivity and specificity of the biosensor.</p><p><strong>Methods: </strong>The enzyme immobilized on nylon and yucca bipolymer membranes was studied to evaluate possible interferences in the amperometric sensor.</p><p><strong>Results: </strong>The sensor developed based on enzyme kinetics proved to be a reliable, sensitive, and low-cost alternative for determining lysine in dairy products. Its performance, comparable to HPLC, together with its low environmental impact, positions it as a useful tool for quality control in the food industry.</p><p><strong>Conclusion: </strong>An enzymatic biosensor capable of quickly, accurately, and economically quantifying lysine in casein hydrolysates was developed. Its high sensitivity, enzymatic stability, and low environmental impact make it a viable and comparable alternative to HPLC for quality control in dairy products.</p>","PeriodicalId":9845,"journal":{"name":"Cellular Physiology and Biochemistry","volume":"59 4","pages":"540-551"},"PeriodicalIF":2.0,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Oxidative Stress, Antioxidants, Gut Microbiota and Male Fertility. 氧化应激,抗氧化剂,肠道微生物群和男性生育能力。
IF 2
Cellular Physiology and Biochemistry Pub Date : 2025-08-25 DOI: 10.33594/000000802
Natalia Kurhaluk, Piotr Kamiński, Halina Tkaczenko
{"title":"Oxidative Stress, Antioxidants, Gut Microbiota and Male Fertility.","authors":"Natalia Kurhaluk, Piotr Kamiński, Halina Tkaczenko","doi":"10.33594/000000802","DOIUrl":"https://doi.org/10.33594/000000802","url":null,"abstract":"<p><p>It is imperative to comprehend the multifactorial causes of male infertility and to identify effective treatment methods, to enhance male reproductive health, and to develop more personalised and effective therapeutic interventions. This review discusses the multifactorial aspects contributing to male infertility, focusing on oxidative stress (OS), sperm quality, gut microbiota, and the potential role of adaptogens. A comprehensive literature search was conducted across several major databases, including the Cochrane Library, Medline, Embase, SciSearch, PubMed, Web of Science, Scopus, and Google Scholar. The findings from the studies included in the databases highlight the significant role of oxidative stress in male infertility, with reactive oxygen species (ROS) contributing to sperm DNA fragmentation and impairment of spermatogenesis. The review further elucidates the influence of both endogenous and exogenous sources of ROS, including lifestyle factors and environmental exposures, on male reproductive health. Emerging research also highlights the involvement of key molecular pathways, such as Nrf2, AMPK/PGC-1α, and NF-κB, in regulating OS within the male reproductive system. Additionally, the review outlines the relationship between endothelial dysfunction, cardiovascular health, and male infertility, identifying OS as a common underlying factor. In addition to the OS, the gut microbiota has been identified as a pivotal factor in male fertility, influencing inflammation and hormonal regulation. This review underscores the potential merits of a synergistic strategy that integrates dietary interventions, antioxidants, gut microbiota modulation, and adaptogens to enhance fertility outcomes. Adaptogens, recognised for their capacity to assist the body in coping with stress and re-establishing equilibrium, may confer protective effects against OS and improve reproductive health. The review under discussion emphasises the importance of a holistic approach to male infertility, integrating molecular, clinical, and lifestyle factors to optimise reproductive health.</p>","PeriodicalId":9845,"journal":{"name":"Cellular Physiology and Biochemistry","volume":"59 S2","pages":"82-123"},"PeriodicalIF":2.0,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144944953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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