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Objectives: Dental implant procedures are crucial for replacing missing teeth, with various surgical techniques impacting the outcome. This systematic review and meta-analysis aimed to evaluate the effects of flapped and flapless surgical techniques on implant survival and marginal bone loss (MBL). Methods: We included clinical studies with at least ten subjects, excluding review articles, editorials, and conference abstracts. Studies were sourced from PubMed, Medline, ERIC, and Wiley, published between 2000 and 2022. Data were analyzed using random-effects models to compare implant survival and MBL between flapped and flapless techniques. Results: The review identified 21 studies meeting the inclusion criteria. Flapless techniques showed a higher implant survival rate with an approximate survival rate of 98.6% in prospective cohort studies and 95.9% in retrospective studies. MBL was consistently lower in the flapless group, averaging 0.6-2.1 mm, compared to 1.5-3 mm in the flapped group. Low-risk studies demonstrated more consistent and reliable results, supporting the efficacy of flapless procedures. Conclusion: Flapless implant surgery offers a viable alternative to traditional flapped surgery, showing higher rates of implant survival and less MBL. However, successful outcomes depend on advanced imaging, precise surgical techniques, and adequate training. Further high-quality studies are needed to confirm these findings and refine clinical recommendations.
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Numerous studies have depicted the role of diet and environmental toxins in aging. Melamine (Mel) is a globally known notorious food adulterant, and its toxicity has been shown in several organs including the brain. However, till now, there are no reports regarding Mel neurotoxicity in aging neurons. So, this study examined the in vitro neurotoxicity caused by Mel in the D-galactose (DG)-induced aging model of neuronal SH-SY5Y cells. In the present study, the neuronal SH-SY5Y cells were treated with DG and Mel separately and in combination to assess the neurotoxicity potential using MTT assay and neurite length measurement. Further, the superoxide dismutase (SOD), catalase (CAT), and total antioxidant activities were evaluated followed by the determination of the intracellular reactive oxygen species (ROS), mitochondrial membrane potential (MMP), and caspase3 (Casp3) activity. The cotreatment of Mel and DG in neuronal SH-SY5Y cells showed maximum cell death than the cells treated with DG or Mel individually and untreated control cells. The neurite length shrinkage and ROS production were maximum in the DG and Mel cotreated cells showing exacerbated toxicity of Mel. The activity of SOD, CAT, and total antioxidants was also found to be lowered in the cotreatment group (Mel + DG) than in Mel- or DG-treated and untreated cells. Further, the combined toxicity of Mel and DG also elevated the Casp3 activity more than any other group. This is the first study showing the increased neurotoxic potential of Mel in an aging model of neuronal SH-SY5Y cells which implicates that Mel consumption by the elderly may lead to increased incidences of neurodegeneration like Alzheimer's disease and Parkinson's disease.
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In developing countries, diarrhoea is a major issue of concern, where consistent use of antibiotics has resulted in several side effects along with development of resistance among pathogens against these antibiotics. Since natural products are becoming the treatment of choice, therefore present investigation involves mechanistic evaluation of antidiarrhoeal potential of Begonia roxburghii and its marker rutin against Shigella flexneri (SF) induced diarrhoea in rats following in vitro, in vivo and in silico protocols. The roots of the plant are used as vegetable in the North East India and are also used traditionally in treating diarrhoea. Phytochemically standardized ethanolic extract of B. roxburghii (EBR) roots and its marker rutin were first subjected to in vitro antibacterial evaluation against SF. Diarrhoea was induced in rats using suspension of SF and various diarrhoeagenic parameters were examined after first, third and fifth day of treatment at 100, 200 and 300 mg/kg, p.o. with EBR and 50 mg/kg, p.o. with rutin respectively. Additionally, density of SF in stools, stool water content, haematological and biochemical parameters, cytokine profiling, ion concentration, histopathology and Na+/K+-ATPase activity were also performed. Molecular docking and dynamics simulation studies of ligand rutin was studied against secreted extracellular protein A (Sep A, PDB: 5J44) from SF and Inducible nitric oxide synthase (iNOS, PDB: 1DD7) followed by network pharmacology. EBR and rutin demonstrated a potent antibacterial activity against SF and also showed significant recovery from diarrhoea (EBR: 81.29 ± 0.91% and rutin: 75.27 ± 0.89%) in rats after five days of treatment. EBR and rutin also showed significant decline in SF density in stools, decreased cytokine expression, potential antioxidant activity, cellular proliferative nature and recovered ion loss due to enhanced Na+/K+-ATPase activity, which was also supported by histopathology. Rutin showed a very high docking score of -11.61 and -9.98 kcal/mol against iNOS and Sep A respectively and their stable complex was also confirmed through dynamics, while network pharmacology suggested that, rutin is quite capable of modulating the pathways of iNOS and Sep A. Thus, we may presume that rutin played a key role in the observed antidiarrhoeal activity of B. roxburghii against SF induced diarrhoea.
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Begoniaceae , Rutina , Ratas , Animales , Rutina/farmacología , Rutina/uso terapéutico , Shigella flexneri , Begoniaceae/metabolismo , Antidiarreicos/uso terapéutico , Óxido Nítrico Sintasa de Tipo II/metabolismo , Simulación del Acoplamiento Molecular , Diarrea/tratamiento farmacológico , Diarrea/microbiología , Antibacterianos/farmacología , Antibacterianos/uso terapéutico , Citocinas/metabolismo , Adenosina Trifosfatasas/metabolismoRESUMEN
This study aimed to assess the efficacy of ethanolic extract of Solanum torvum L. fruit (EESTF) containing solasodine in treating chronic constriction injury (CCI)-induced neuropathic pain in rats. Three-dimensional (3D) simulation studies of solasodine binding were conducted on the TRPV1 receptor, IL-6, and TNF-α structures. For in vivo justification, an assessment of behavioral, biochemical, and histological changes was designed after a CCI-induced neuropathic pain model in rats. On days 7, 14, and 21, CCI significantly increased mechanical, thermal, and cold allodynia while producing a functional deficit. IL-6, TNF-α, TBARS, and MPO levels also increased. SOD levels of catalase and reduced glutathione levels also decreased. Administration of pregabalin (30 mg/kg, oral), solasodine (25 mg/kg, oral), and EESTF (100 and 300 mg/kg, oral) significantly reduced CCI-induced behavioral and biochemical changes (P < 0.05). The protective nature of EESTF was also confirmed by histological analysis. Capsaicin, a TRPV1 receptor agonist, abolished the antinociceptive effects of EESTF when used previously. From the observations of the docking studies, solasodine acted as an antagonist at TRPV1, whereas the docking scores of solasodine against TNF-α and IL-6 were reported to be -11.2 and -6.04 kcal/mol, respectively. The attenuating effect of EESTF might be related to its antagonistic effects on TRPV1, suppression of cytokines, and anti-inflammatory and antioxidant properties.
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Citocinas , Neuralgia , Ratas , Animales , Factor de Necrosis Tumoral alfa/metabolismo , Interleucina-6 , Frutas/metabolismo , Constricción , Neuralgia/complicaciones , Neuralgia/tratamiento farmacológico , Neuralgia/prevención & control , Hiperalgesia/complicaciones , Hiperalgesia/tratamiento farmacológico , Hiperalgesia/metabolismoRESUMEN
The development of diagnostic tools remains at the center of the health care system. In recent times optical biosensors have been widely applied in the scientific community, especially for monitoring protein-protein or nucleic acid hybridization interactions. Optical biosensors-derived surface plasmon resonance (SPR) technology has appeared as a revolutionary technology at the current times. This review focuses on the research work in molecular biomarker evaluation using the technique based on SPR for translational clinical diagnosis. The review has covered both communicable and noncommunicable diseases by using different bio-fluids of the patient's sample for diagnosis of the diseases. An increasing number of SPR approaches have been developed in healthcare research and fundamental biological studies. The utility of SPR in the area of biosensing basically lies in its noninvasive diagnostic and prognostic feature due to its label-free high sensitivity and specificity properties. This makes SPR an invaluable tool with precise application in the recognition of different stages of the disease.
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Técnicas Biosensibles , Resonancia por Plasmón de Superficie , Humanos , Resonancia por Plasmón de Superficie/métodos , Técnicas Biosensibles/métodos , Proteínas , Biomarcadores , Diagnóstico PrecozRESUMEN
A 19-year-old male presented with dyspnea on exertion (New York Heart Association [NYHA] class II) and occasional palpitations for six months. He had initially been evaluated at another facility and diagnosed with dilated cardiomyopathy. Despite treatment, there was no improvement in his symptoms. On evaluation at our centre, his previous electrocardiograms appeared normal. However, palpation of his radial pulse for one minute revealed runs of regular tachycardia, interspersed with a normal pulse rate. A 30-second rhythm strip electrocardiogram (ECG) showed multiple runs of ectopic tachycardia originating from the right atrial appendage, interspersed with ectopic atrial rhythms. Echocardiography showed severe left ventricle (LV) dysfunction with an ejection fraction of 20-25%. Radio-frequency ablation was recommended, but the patient declined. Instead, he was started on Ivabradine. After a month, his symptoms fully resolved. The ECG displayed a normal sinus rhythm with no tachycardia, and his left ventricular ejection function improved.
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Cardiomiopatías , Taquicardia Supraventricular , Masculino , Humanos , Adulto Joven , Adulto , Ivabradina/uso terapéutico , Muñeca , Corazón , Taquicardia/tratamiento farmacológicoRESUMEN
A 14-year-old boy presented with dyspnea on exertion and easy fatiguability for 1 year. He also had an episode of pedal edema 6 months prior, which resolved with diuretics. He had a history of tuberculosis treated with a 6-month course of antitubercular therapy. After a series of tests and analyses, it was evident that longitudinal contraction of the left ventricle was preserved, whereas the circumferential contraction was severely impaired. Pericardial calcification also could be seen encircling the left and right ventricles. Pericardial calcification is evident in around 25% of cases of constrictive pericarditis and predominantly seen in those with tubercular and pyogenic etiology. The subepicardial myocardial fibers are responsible for radial shortening and subendocardial fibers are responsible for longitudinal shortening. In constrictive pericarditis, the involvement of the subepicardial fibers leads to reduction in the circumferential shortening. The patient was referred for pericardiectomy.
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Calcinosis , Pericarditis Constrictiva , Adolescente , Angiografía/efectos adversos , Calcinosis/complicaciones , Diuréticos , Ventrículos Cardíacos/diagnóstico por imagen , Humanos , Masculino , Pericardiectomía/efectos adversos , Pericarditis Constrictiva/diagnóstico , Pericarditis Constrictiva/etiología , Pericarditis Constrictiva/cirugíaRESUMEN
INTRODUCTION: The genus Callistemon belongs to a group of medically significant plants which have found tremendous use in traditional medicine across the globe. They are reported for anti-cancer, neuroprotective, anti-inflammatory, antioxidant, anti-microbial, and many other significant medicinal attributes. However, the current use of this genus is limited mainly to ornamental and recreational purposes. Recent studies have reported several novel compounds like phloroglucinol derivatives, terpenes, phenolics, etc., from Callistemon spp., which have great medical significance. Further, there is a surge of recent studies reporting novel pharmacological properties of Callistemon. The number of review studies discussing the underlying molecular mechanism behind the pharmacological action of Callistemon is quite limited. METHODS: The literature search for studies published from 1991 to 2021 using Google scholar and PubMed were selected. The review documented relevant literature focused on Callistemon spp exhibiting significant pharmacological effects. RESULTS: This review deals with the pharmacological properties of Callistemon and the underlying molecular mechanism responsible for protective effect in several pathophysiological conditions. This study updated the current information regarding the medicinal importance of Callistemon spp. for research and the public community. DISCUSSION AND CONCLUSIONS: The preliminary studies, interrogating pharmacological properties of Callistemon spp., hold great promise and demand further research to decipher the mode of action. More and more research are needed in this direction to explore the full potential of the genus Callistemon as a medicinal herb.
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Melamine consumption causes oxidative stress by an unknown mechanism. Therefore, it is of interest to analyze the interaction of melamine with two important proteins involved in oxidative stress biology namely, nuclear factor erythroid 2-related factor 2 and succinate dehydrogenase. The molecular docking data shows the melamine binding with these two proteins at critical residues. These interactions can be logically perceived for the causation of melamine induced oxidative stress.
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A 57-year-old woman presented with acute-onset dyspea with a duration of more than 2 days. Four days earlier, she had been thrombolyzed with streptokinase for inferior wall myocardial infarction in a nearby hospital. On examination, we found that the patient had elevated jugular venous pressure and systolic murmur in left lower parasternal region. In addition, there was a ventricular septal rupture in the posterobasal interventricular septum, with at least 2 exit points into the right ventricle. Timely identification of ventricular septal rupture before PCI is of paramount importance, as it has major implications in management of the patient.
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Infarto de la Pared Inferior del Miocardio , Intervención Coronaria Percutánea , Rotura Septal Ventricular , Disnea/diagnóstico , Disnea/etiología , Femenino , Ventrículos Cardíacos/diagnóstico por imagen , Humanos , Infarto de la Pared Inferior del Miocardio/complicaciones , Infarto de la Pared Inferior del Miocardio/diagnóstico , Persona de Mediana EdadRESUMEN
A 52-year-old woman presented to another hospital with progressive dyspnea of 10-day duration. The patient was diagnosed with a massive pericardial effusion and underwent pericardiocentesis. However, the patient's symptoms did not improve and she was referred to our hospital with a pericardial sheath in situ. On evaluation, the patient had a large pericardial effusion and evidence of cardiac tamponade, but no fluid could be aspirated from the sheath. This case underscores the importance of image-guided pericardiocentesis.
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Taponamiento Cardíaco , Derrame Pericárdico , Taponamiento Cardíaco/diagnóstico , Taponamiento Cardíaco/etiología , Taponamiento Cardíaco/cirugía , Cateterismo , Femenino , Corazón , Humanos , Persona de Mediana Edad , Derrame Pericárdico/diagnóstico , Derrame Pericárdico/etiología , Derrame Pericárdico/cirugía , PericardiocentesisRESUMEN
Adenosine has been used in the emergency treatment of arrhythmia for more than nine decades. However, cardiologists are often unfamiliar about its basic mechanism and various diagnostic and therapeutic uses, considering it mainly as a therapeutic drug for supraventricular tachycardia. This article discusses the role of adenosine relevant to emergency physicians, cardiologists, and electrophysiologists. Understanding of the mechanisms of adenosine and its electrophysiological effects is discussed first, followed by dosing, side effects, diagnostic, and therapeutic uses. Finally, the role of adenosine in the electrophysiology laboratory is discussed.
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The aging at cellular level manifests itself in the form of uncontrolled formation of ROS, chronic inflammation, and increased susceptibility to cellular stress. Aging is often regarded as a risk factor for several diseases due to several age-associated pathological changes in cells. Sestrin (Sesn) is an important molecule for controlling normal cellular physiology and play a significant role in the progression of certain age-associated cellular pathologies. This review deals with the structure, function, regulation, signaling network, and the potential role of Sesn in age-associated cellular pathophysiology. The cellular response mediated by Sesn under stressful conditions and rescue mechanism is discussed. It would be interesting to find out the precise physiological role of Sesn in the regulation of cellular aging. The anti-aging activity of Sesn may benefit to prevent various age-associated diseases and have clinical utility in diagnostic and therapeutic intervention.
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Envejecimiento , Sestrinas , Humanos , Estrés Oxidativo , Transducción de SeñalRESUMEN
Sestrin2 (Sesn2) appears to mediate neuroprotection against Parkinson's disease (PD)-associated pathophysiology, however, the mechanism is unknown. This pilot study examines serum Sesn2 level in PD patients and older adult control and also interrogates the rescue effect of Syzygium aromaticum extract on the neurotoxicity by paraquat in neuroblastoma cells. The blood sample was collected from 36 PD patients and 54 older adult control and concentration of serum Sesn2 was measured by surface plasmon resonance and western blot. A significantly elevated level of Sesn2 (p < .0001) was observed in sera of PD group (15.96 ± 2.428 ng/µL) than the control (13.65 ± 2.125 ng/µL) which was further confirmed by western blotting. The receiver operating characteristic (ROC) curve (0.76) determined the threshold value of ≥14.58 ng/µL for differentiating PD from control. The S aromaticum extract exhibited the rescue effect from paraquat induced toxicity in SH-SY5Y cells. Further, these cells showed dose-dependent downregulation of p53, Sesn2, and phosphorylated-AMPK with concomitant increase in phosphorylated-p70S6K level than paraquat-treated cells. The differential level of Sesn2 in study subjects proposes its utility as one of the potential serum markers in PD. The ethanolic extract of S aromaticum may serve as a novel platform for management of PD-associated neurotoxicity.
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Proteínas Nucleares/sangre , Enfermedad de Parkinson/sangre , Proteínas Quinasas Activadas por AMP/metabolismo , Anciano , Biomarcadores/sangre , Estudios de Casos y Controles , Línea Celular , Estrés del Retículo Endoplásmico/efectos de los fármacos , Femenino , Humanos , Masculino , Medicina Ayurvédica , Persona de Mediana Edad , Neuronas/efectos de los fármacos , Neuronas/metabolismo , Proteínas Nucleares/metabolismo , Paraquat/toxicidad , Enfermedad de Parkinson/tratamiento farmacológico , Fitoterapia , Extractos Vegetales/uso terapéutico , SyzygiumRESUMEN
Frailty in elderly is very much familiar with a decline in the musculoskeletal system. Muscle degeneration in the lower organism was observed due to loss of anti-oxidant protein Sestrin. The aim of the study is to determine the level of Sestrin1 and Sestrin2 in the serum of frail and non-frail elderly to associate their impact in frailty syndrome. Subjects with age ≥ 65 years were enrolled from Geriatric Medicine OPD of All India Institute of Medical Sciences, New Delhi (N= 92). Among them, 51 subjects were identified as frail and rest 41 were regarded as non-frail according to "deficit accumulation model of Rockwood." The study was performed by surface plasmon resonance and validated by western blot. Sestrin1 and Sestrin2 were found to be significantly reduced in frail compare to non-frail elderly. Furthermore, even after the adjustment for age, gender and education, the level of Sestrin1 and Sestrin2 remain significantly lower across the groups. The Sestrin1 level was significantly lower in various categories like age, gender, BMI, education, ADL, number of co-morbidity along with other clinico-pathological features. ROC analysis also revealed the distinction of frail and non-frail in respect to serum Sestrin1 and Sestrin2. This study highlighted the new and promising role of serum Sestrin in frail and non-frail elderly. In future, it can be utilized as molecular marker to assess the potential diagnostic value for clinical purpose.
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A 31-year-old man with a mitral bioprosthetic valve presented with recent worsening of exertional dyspnoea 7 years after the mitral valve replacement. Evaluation revealed an increased gradient across the thickened mitral bioprosthetic valve leaflets. Marked eosinophilia was present and was considered as a putative cause for bioprosthetic valve thrombosis. The treatment with systemic corticosteroids and oral anticoagulation led to complete resolution of symptoms with significant decrease in mitral bioprosthetic valve gradient and leaflet thinning. The case is reported to highlight the fact that eosinophilia may cause reversible bioprosthetic valve thrombosis.
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Prótesis Valvulares Cardíacas , Síndrome Hipereosinofílico/complicaciones , Válvula Mitral/diagnóstico por imagen , Falla de Prótesis/efectos adversos , Trombosis/etiología , Corticoesteroides/uso terapéutico , Adulto , Anticoagulantes/uso terapéutico , Dietilcarbamazina , Ecocardiografía , Humanos , Síndrome Hipereosinofílico/sangre , Síndrome Hipereosinofílico/tratamiento farmacológico , Masculino , Válvula Mitral/cirugía , Radiografía , Reoperación , Trombosis/diagnóstico por imagen , Trombosis/tratamiento farmacológicoRESUMEN
The inflammatory process plays a key role in neurodegenerative disorder. The inflammatory molecule, 5-lipooxygenase (5-LOX), protein is involved in the pathologic phenotype of Alzheimer's disease (AD) which includes Aß amyloid deposition and tau hyperphosphorylation. This study determined the level of 5-LOX in serum of AD patients, mild cognitive impairment (MCI) patients, and the normal elderly, and the rescue effect by YWCS, a peptide inhibitor of 5-LOX on neurotoxicity by Aß amyloid25-35 (Aß25-35) in neuroblastoma cells. The concentration of serum 5-LOX was estimated by surface plasmon resonance and western blot. The neuroprotective effect of 5-LOX peptide inhibitor YWCS in Aß25-35-induced neurotoxicity was analyzed by MTT assay and western blotting. We found significant upregulated serum 5-LOX in AD patients and also in MCI patients compared to the normal control group. The peptide inhibitor of 5-LOX, YWCS, prevented the neurotoxic effect of Aß25-35 by reducing the expression of γ-secretase as well as p-Tau181 in SH-SY5Y cells. However, YWCS was nontoxic towards normal HEK cells. The differential expression of serum 5-LOX among the study groups suggests it can be one of potential serum protein marker and a therapeutic regimen for AD and MCI. The negative correlation with neuropsychological parameters, i.e., MoCA and HMSE, increases its importance and makes it useful during the clinical setup which is very needful in developing countries. Peptide YWCS can serve as a new platform as a 5-LOX inhibitor which can prevent neurotoxicity developed in AD.
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Enfermedad de Alzheimer/sangre , Enfermedad de Alzheimer/enzimología , Araquidonato 5-Lipooxigenasa/sangre , Inhibidores de la Lipooxigenasa/uso terapéutico , Síndromes de Neurotoxicidad/sangre , Síndromes de Neurotoxicidad/tratamiento farmacológico , Péptidos/uso terapéutico , Anciano , Secretasas de la Proteína Precursora del Amiloide/metabolismo , Biomarcadores , Estudios de Casos y Controles , Línea Celular Tumoral , Supervivencia Celular/efectos de los fármacos , Femenino , Células HEK293 , Humanos , Inhibidores de la Lipooxigenasa/farmacología , Masculino , Péptidos/farmacología , Fosforilación/efectos de los fármacos , Curva ROC , Proteínas tau/metabolismoRESUMEN
Prosthetic heart valve thrombosis (PHVT) is a major cause of morbidity and mortality in patients with mechanical heart valves. We present a case of recurrent PHVT associated with eosinophilia. A 17-year-old girl underwent aortic and mitral valve replacement for rheumatic heart disease. Over a period of 4 years, she had four episodes of PHVT despite oral anticoagulation with adequate INR. Her investigations revealed eosinophilia which was missed during the previous episodes. No further episodes of PHVT occurred after treatment of eosinophilia with steroids on limited follow-up.
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Válvula Aórtica/cirugía , Trombosis Coronaria/etiología , Eosinofilia/complicaciones , Prótesis Valvulares Cardíacas/efectos adversos , Válvula Mitral/cirugía , Adolescente , Errores Diagnósticos , Eosinofilia/diagnóstico , Femenino , Implantación de Prótesis de Válvulas Cardíacas/efectos adversos , Implantación de Prótesis de Válvulas Cardíacas/métodos , Humanos , Recurrencia , Cardiopatía Reumática/cirugíaRESUMEN
BACKGROUND: Ageing process is characterized by a decline in function; different age related diseases and excessive age associated mortality. There has always been a quest for easily accessible biomarkers to monitor and identify the development of age-associated stress for providing new anti-ageing strategies. Forkhead box protein O3A (FOXO3A) and Sirtuin3 (SIRT3) are such potential markers which plays important role in a wide variety of cellular mechanisms and has been proposed to be an ideal candidate to study longevity and are potential candidate for healthy ageing by oxidative burst. OBJECTIVES: In this study we quantified FOXO3A and SIRT3 proteins in human serum with increasing age and in-vitro assessment of modulation of their expression by the treatment of Withania somnifera (Ashwagandha). METHODOLOGY: Four hundred seventy three subjects were enrolled for the study and were divided into three groups according to increasing age [20-30years (young), 60-79years (old) and ≥80years (oldest)]. Serum levels of FOXO3A and SIRT3 proteins were estimated by Surface Plasmon Resonance (SPR) and validated by ELISA and Western blot. The statistical analysis was done with student's unpaired t-test, one way ANOVA by Stata9 and Graph pad prism5. The expression of these proteins were also analysed in stress induced HEK-293 cell line and level was observed by treatment with stress releasing compound Ashwagandha. RESULTS: In this cross sectional observational study, the serum concentration of FOXO3A and SIRT3 declined significantly (p<0.0001) with increasing age and even after adjustment with all geriatric co-morbidities the level remain downregulated with age. In the stress inducible cell line showed reduced level of proteins which gets upregulated by the treatment of Ashwagandha. CONCLUSION: This is the first report of inverse relation of age with human serum FOXO3A and SIRT3 and can be excellent marker for ageing with good therapeutic importance for maintaining healthy ageing.