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1.
Drug Res (Stuttg) ; 74(4): 156-163, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38458224

RESUMO

Diosgenin is a sapogenin with antidiabetic, antioxidant, and anti-inflammatory properties. The current study investigated whether diosgenin could ameliorate carbon tetrachloride (CCL4)-induced liver injury. To cause liver injury, CCL4 was injected intraperitoneally twice a week for 8 weeks. Daily oral administration of diosgenin at doses of 20, 40, and 80 mg/kg was started one day before CCL4 injection and continued for 8 weeks. Finally, serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and also albumin were assessed. Catalase and superoxide dismutase (SOD) activities in addition to glutathione (GSH) and malondialdehyde (MDA) levels were also quantified in the liver homogenate and routine histological evaluation was also conducted. Elevated serum levels of liver enzymes and decreased serum level of albumin caused by CCL4 were significantly restored following diosgenin administration at doses of 40 and 80 mg/kg. Long-term administration of CCL4 increased inflammatory and apoptotic factors such as IL-1ß, caspase 3, TNF-α, and IL-6 and decreased SOD and catalase activities as well as GSH level in liver homogenates; while MDA level was increased. Treatment with diosgenin increased SOD and catalase activities and GSH levels in the liver of injured animals. In addition, liver MDA, IL-1ß, caspase 3, TNF-α, and IL-6 level or activity decreased by diosgenin treatment. Additionally, diosgenin aptly prevented aberrant liver histological changes. According to obtained results, diosgenin can dose-dependently diminish CCl4-induced liver functional deficits and histological changes in a dose-dependent manner, possibly due to its antioxidant and anti-inflammation properties, and its beneficial effect is comparable to known hepatoprotective agent silymarin.


Assuntos
Antioxidantes , Doença Hepática Induzida por Substâncias e Drogas , Camundongos , Animais , Antioxidantes/farmacologia , Antioxidantes/uso terapêutico , Tetracloreto de Carbono/toxicidade , Catalase , Caspase 3 , Fator de Necrose Tumoral alfa , Interleucina-6 , Doença Hepática Induzida por Substâncias e Drogas/tratamento farmacológico , Doença Hepática Induzida por Substâncias e Drogas/patologia , Fígado , Glutationa , Anti-Inflamatórios/farmacologia , Superóxido Dismutase , Albuminas/farmacologia , Alanina Transaminase
2.
J Med Case Rep ; 18(1): 120, 2024 Mar 19.
Artigo em Inglês | MEDLINE | ID: mdl-38500153

RESUMO

BACKGROUND: Most of critically ventilated patients with severe hemorrhagic shock experience metabolic acidosis, hypoalbuminemia, electrolyte imbalance, and increased production of free radical. Channa striata has a high content of albumin, an essential binding protein that contributes to homeostasis, and when combined with Moringa oleifera and Curcuma xanthorrhiza, they act as powerful antioxidants. Administration of C. striata, M. oleifera, and C. xanthorrhiza extract orally may benefit patient with hemodynamic issues, including significant blood loss. CASE REPORT: A 40-year-old Indonesian woman came to emergency department with decreased consciousness resulting from hemorrhagic shock grade 3 due to prolonged placenta retention for 10 days after delivery of her third child. She had an emergency hysterectomy and was sent to the intensive care unit with a hemoglobin level of 4.2 gr/dL, despite already receiving two bags of packed red blood cells during operation, and she continued with four more bags within her first day in the intensive care unit. The patient was ventilated, was supported by vasopressors, and had a low albumin level of 2.1 gr/dL. Her hemodynamic profile was difficult to stabilize, with persistent gastric residue and periodic urine output less than 1 cc/kg/hour, thereby slowing the ventilator and vasopressor weaning process. Oral supplementation of C. striata, M. oleifera, and C. xanthorrhiza was given in the second day divided in three doses every 6 hours. After the second dose, gastric residue started to subside and disappeared after the third dose. The patient's condition improved in the next 24 hours; she was extubated and discharged from the hospital in the fourth day. CONCLUSION: This is the first case report describing the effect of C. striata, M. oleifera, and C. xanthorrhiza extract in a patient with severe hemorrhagic shock due to a prolonged placenta. Accelerated recovery showed the possibility benefit of C. striata, M. oleifera, and C. xanthorrhiza extract in stabilizing oncotic pressure, neutralizing free radicals, and preventing further damage in hypoxic cells.


Assuntos
Moringa oleifera , Placenta Retida , Choque Hemorrágico , Adulto , Animais , Feminino , Humanos , Albuminas , Antioxidantes/uso terapêutico , Curcuma , Peixes , Radicais Livres , Moringa oleifera/química , Extratos Vegetais/química , Respiração Artificial
3.
Sci Rep ; 14(1): 5555, 2024 03 06.
Artigo em Inglês | MEDLINE | ID: mdl-38448604

RESUMO

Methionine (Met) rich diet inducing oxidative stress is reported to alter many organs. Proteasome as a regulator of oxidative stress can be targeted. This study was performed to investigate if excessive methionine supplementation causes hepatotoxicity related to proteasome dysfunction under endogenous oxidative stress in rats. Male Wistar albino rats (n = 16) were divided into controls and treated groups. The treated rats (n = 08) received orally L-methionine (1 g/kg/day) for 21 days. Total homocysteine (tHcy), total oxidant status (TOS), total antioxidant status (TAS), hepatic enzymes levels: aspartate aminotransferase (AST), alanine aminotransferase (ALT), lactate dehydrogenase (LDH), alkaline phosphatase (ALP), with total bilirubin (TBil), albumin (Alb), and C-reactive protein (CRP) were determined in plasma by biochemical assays. Liver supernatants were used for malondialdehyde (MDA), protein carbonyls (PC), glutathione (GSH), catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), 20S proteasome activities and their subunits expression, tumor necrosis factor-α (TNF-α), and interleukin 6 (IL-6) evaluation by appropriate methods and light microscopy for liver histological examination. Methionine treatment increased homocysteine, TOS, oxidative stress index (OSI), MDA and PC but decreased TAS, GSH, CAT, SOD, GPx with the 20S proteasome activities and their ß subunits expression. Liver proteins: AST, ALT, LDH, ALP, TBil and CRP were increased but Alb was decreased. Liver histology was also altered. An increase in liver TNF-α and IL-6 levels were observed. These findings indicated that methionine supplementation associated oxidative stress and proteasome dysfunction, caused hepatotoxicity and inflammation in rat. Further investigations should be to better understand the relation between methionine, oxidative stress, proteasome, and liver injuries.


Assuntos
Doença Hepática Induzida por Substâncias e Drogas , Metionina , Masculino , Animais , Ratos , Ratos Wistar , Complexo de Endopeptidases do Proteassoma , Interleucina-6 , Fator de Necrose Tumoral alfa , Racemetionina , Dieta , Estresse Oxidativo , Antioxidantes , Proteína C-Reativa , Albuminas , Homocisteína , Superóxido Dismutase
4.
Theriogenology ; 219: 167-179, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38437767

RESUMO

Porcine seminal plasma (SP) is loaded with a heterogeneous population of extracellular vesicles (sEVs) that modulate several reproductive-related processes. This study investigated the effect of two sEV subsets, small (S-sEVs) and large (L-sEVs), on porcine in vitro fertilization (IVF). The sEVs were isolated from nine SP pools (five ejaculates/pool) using a size-exclusion chromatography-based procedure and characterized for quantity (total protein), morphology (cryogenic electron microscopy), size distribution (dynamic light scattering), purity and EV-protein markers (flow cytometry; albumin, CD81, HSP90ß). The characterization confirmed the existence of two subsets of high purity (low albumin content) sEVs that differed in size (S- and L-sEVs). In vitro fertilization was performed with in vitro matured oocytes and frozen-thawed spermatozoa and the IVF medium was supplemented during gamete coincubation (1 h at 38.5 °C, 5 % CO2 in a humidified atmosphere) with three different concentrations of each sEV subset: 0 (control, without sEVs), 0.1, and 0.2 mg/mL. The first experiment showed that sEVs, regardless of subset and concentration, decreased penetration rates and total IVF efficiency (P < 0.0001). In a subsequent experiment, it was shown that sEVs, regardless of subset and concentration, impaired the ability of spermatozoa to bind to the zona pellucida of oocytes (P < 0.0001). The following experiment showed that sEVs, regardless of the subset, bound to frozen-thawed sperm but not to in vitro matured oocytes, indicating that sEVs would affect sperm functionality but not oocyte functionality. The lack of effect on oocytes was confirmed by incubating sEVs with oocytes prior to IVF, achieving sperm-zona pellucida binding results similar to those of control. In the last experiment, conducted under IVF conditions, sperm functionality was analyzed in terms of tyrosine phosphorylation, acrosome integrity and metabolism. The sEVs, regardless of the subset, did not affect sperm tyrosine phosphorylation or acrosome integrity, but did influence sperm metabolism by decreasing sperm ATP production under capacitating conditions. In conclusion, this study demonstrated that the presence of sEVs on IVF medium impairs IVF outcomes, most likely by altering sperm metabolism.


Assuntos
Sêmen , Interações Espermatozoide-Óvulo , Masculino , Suínos , Animais , Fertilização in vitro/veterinária , Fertilização in vitro/métodos , Espermatozoides/metabolismo , Oócitos , Zona Pelúcida/metabolismo , Albuminas/metabolismo , Tirosina/metabolismo
5.
Trials ; 25(1): 160, 2024 Mar 02.
Artigo em Inglês | MEDLINE | ID: mdl-38431600

RESUMO

BACKGROUND: Burn injuries are important medical problems that, aside from skin damage, cause a systemic response including inflammation, oxidative stress, endocrine disorders, immune response, and hypermetabolic and catabolic responses which affect all the organs in the body. The aim of this study was to determine the effect of coenzyme Q10 (CoQ10) supplementation on inflammation, oxidative stress, and clinical outcomes in burn patients. METHODS: In a double-blind placebo-controlled randomized clinical trial, 60 burn patients were randomly assigned to receive 100 mg CoQ10 three times a day (total 300 mg/day) or a placebo for 10 days. Inflammatory markers including erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), oxidative stress markers including total antioxidant capacity (TAC), malondialdehyde (MDA) and superoxide dismutase (SOD) activity, fasting blood glucose (FBG), blood urea nitrogen (BUN), creatinine, white blood cells (WBC), and body temperature were assessed as primary outcomes and albumin, prothrombin time (PT), partial thromboplastin time (PTT), international normalized ratio (INR), other hematological parameters, blood pressure, O2 saturation, ICU duration, and 28-mortality rate were assessed as secondary outcomes. RESULTS: Fifty-two participants completed the trial. CRP and ESR levels were not significantly different between CoQ10 and placebo groups at the end of the study (P = 0.550 and P = 0.306, respectively). No significant differences between groups were observed for TAC (P = 0.865), MDA (P = 0.692), and SOD activity (P = 0.633) as well. Administration of CoQ10 resulted in a significant increase in albumin levels compared to placebo (P = 0.031). There was no statistically significant difference between the two groups in other measured outcomes (P > 0.05). CONCLUSION: Results showed that in patients with burn injury, CoQ10 administration had no effect on inflammatory markers and oxidative stress, although serum albumin levels were improved after supplementation. Further studies with albumin as the primary outcome are needed to confirm this finding.


Assuntos
Antioxidantes , Suplementos Nutricionais , Ubiquinona/análogos & derivados , Humanos , Suplementos Nutricionais/efeitos adversos , Antioxidantes/efeitos adversos , Estresse Oxidativo , Proteína C-Reativa/metabolismo , Inflamação/diagnóstico , Inflamação/tratamento farmacológico , Albuminas , Superóxido Dismutase/metabolismo , Superóxido Dismutase/farmacologia , Método Duplo-Cego
6.
ACS Appl Mater Interfaces ; 16(9): 11239-11250, 2024 Mar 06.
Artigo em Inglês | MEDLINE | ID: mdl-38395769

RESUMO

Hepatic cirrhosis has become a global public health concern with high mortality and currently lacks effective clinical treatment methods. Activation of hepatic stellate cells (HSCs) and the large number of macrophages infiltrating into the liver play a critical role in the development of liver cirrhosis. This study developed a novel modified nanoparticle system (SRF-CS-PSA NPs) in which Sorafenib (SRF) was encapsulated by palmitic acid-modified albumin (PSA) and further modified with chondroitin sulfate (CS). These modifications enabled the SRF-CS-PSA NPs to effectively target hepatic stellate cells (HSCs) and macrophages. SRF-CS-PSA NPs showed uniform particle size distribution of approximately 120 nm and high loading efficiency of up to 99.5% and can be taken up by HSCs and macrophages via CD44 and SR-A receptors, respectively. In a mouse model of liver cirrhosis, SRF-CS-PSA NPs demonstrated superior targeting and inhibition of HSCs and macrophages, effectively reversing the process of liver cirrhosis. Overall, our study demonstrates the potential of SRF-CS-PSA NPs as a targeted therapy for liver cirrhosis, with promising clinical applications.


Assuntos
Células Estreladas do Fígado , Nanopartículas , Camundongos , Animais , Cirrose Hepática/tratamento farmacológico , Fígado/patologia , Sorafenibe/uso terapêutico , Albuminas
7.
Nanomedicine (Lond) ; 19(8): 689-708, 2024 04.
Artigo em Inglês | MEDLINE | ID: mdl-38348681

RESUMO

Background: The effectiveness of a drug is dependent on its accumulation at the site of therapeutic action, as well as its time in circulation. The aim of the research was the creation of stable albumin/tannin (punicalagin, punicalin) particles, which might serve for the delivery of medicines. Methods: Numerous chromatographic and analytical methods, docking analyses and in vivo testing were applied and used. Results: Stable tannin-albumin/medicine particles with a diameter of ∼100 nm were obtained. The results of in vivo experiments proved that tannin-albumin particles are more stable than albumin particles. Conclusion: Based on the experiments and docking analyses, these stable particles can carry an extended number of medicines, with diverse chemical structures.


Assuntos
Extratos Vegetais , Taninos , Extratos Vegetais/química , Albuminas , Fagocitose , Antioxidantes , Portadores de Fármacos
8.
Pharm Res ; 41(3): 513-529, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38383935

RESUMO

BACKGROUND: Panax notoginseng saponins (PNS) are commonly used first-line drugs for treating cerebral thrombosis and stroke in China. However, the synchronized and targeted delivery of active ingredients in traditional Chinese medicine (TCM) poses a significant challenge for modern TCM formulations. METHODS: Bovine serum albumin (BSA) was modified using 2-methacryloyloxyethyl phosphorylcholine (MPC), an analog of acetylcholine, and subsequently adsorbed the major PNS onto the modified albumin to produce MPC-BSA@PNS nanoparticles (NPs). This novel delivery system facilitated efficient and synchronized transport of PNS across the blood-brain barrier (BBB) through active transport mediated by nicotinic acetylcholine receptors. RESULTS: In vitro experiments demonstrated that the transport rates of R1, Rg1, Rb1, and Rd across the BBB were relatively synchronous in MPC-BSA@PNS NPs compared to those in the PNS solution. Additionally, animal experiments revealed that the brain-targeting efficiencies of R1 + Rg1 + Rb1 in MPC-BSA@PNS NPs were 2.02 and 7.73 times higher than those in BSA@PNS NPs and the free PNS group, respectively. CONCLUSIONS: This study presents a simple and feasible approach for achieving the targeted delivery of complex active ingredient clusters in TCM.


Assuntos
Panax notoginseng , Saponinas , Animais , Acetilcolina , Encéfalo , Albuminas
9.
Drug Chem Toxicol ; 47(2): 243-251, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38303124

RESUMO

Prolonged use of Highly Active Antiretroviral Therapy (HAART) has been linked to toxicity, particularly hepatotoxicity. There are few effective drugs for HAART patients that promote hepatic cell regeneration and prevent liver injury. Therefore, the purpose of this study was to investigate the hepato-protective activity of Methanol fruit extract of Punica granatum (MFEPG) in HAART-administered rats. Thirty rats weighing between 150-200 g were randomly divided into six groups and each group comprised of five rats. Distilled water was given to the rats in group one. Only HAART was given to the rats in group two. MFEPG at doses of 100 and 400 mg/kg was given to the rats in groups three and four. MFEPG dosages of 100 and 400 mg/kg along with HAART were given to the rats in groups five and six, respectively. All treatments were via oral gavage daily for 40 days. Under halothane anesthesia, all rats were sacrificed on day 41. Liver tissues were utilized for lipid peroxidation marker; Malondialdehyde (MDA), antioxidant enzymes; Superoxide dismutase (SOD) and Catalase (CAT) and histological evaluation, while blood samples were examined for biochemical parameters (AST, ALT, ALP, Total cholesterol, Total protein, and Albumin). The HAART-treated group exhibited a significantly higher amount of the lipid peroxidation end product; MDA, and significantly lower levels of antioxidant enzymes; SOD, and CAT. Liver enzymes and total cholesterol were significantly increased with a significant reduction in Total protein and Albumin levels in the HAART-treated group. Conversely, the liver function biomarkers were returned to normal levels in the HAART and MFEPG-treated groups. Histopathological studies revealed that when HAART-exposed rats were treated with MFEPG, both the biochemical and histological results significantly improved. Thus, the antioxidant activity of MFEPG provides protection against HAART-induced liver oxidative damage. More research is needed to determine the safety of using MFEPG in humans.


Assuntos
Antioxidantes , Punica granatum , Humanos , Ratos , Animais , Antioxidantes/farmacologia , Antioxidantes/metabolismo , Ratos Wistar , Punica granatum/metabolismo , Terapia Antirretroviral de Alta Atividade , Metanol , Frutas , Extratos Vegetais/uso terapêutico , Fígado , Superóxido Dismutase/metabolismo , Peroxidação de Lipídeos , Albuminas/metabolismo , Albuminas/farmacologia , Colesterol/metabolismo , Colesterol/farmacologia
10.
Ren Fail ; 46(1): 2322039, 2024 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38415296

RESUMO

BACKGROUND: The mortality risk varies considerably among individual dialysis patients. This study aimed to develop a user-friendly predictive model for predicting all-cause mortality among dialysis patients. METHODS: Retrospective data regarding dialysis patients were obtained from two hospitals. Patients in training cohort (N = 1421) were recruited from the Fifth Affiliated Hospital of Sun Yat-sen University, and patients in external validation cohort (N = 429) were recruited from the First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine. The follow-up endpoint event was all-cause death. Variables were selected by LASSO-Cox regression, and the model was constructed by Cox regression, which was presented in the form of nomogram and web-based tool. The discrimination and accuracy of the prediction model were assessed using C-indexes and calibration curves, while the clinical value was assessed by decision curve analysis (DCA). RESULTS: The best predictors of 1-, 3-, and 5-year all-cause mortality contained nine independent factors, including age, body mass index (BMI), diabetes mellitus (DM), cardiovascular disease (CVD), cancer, urine volume, hemoglobin (HGB), albumin (ALB), and pleural effusion (PE). The 1-, 3-, and 5-year C-indexes in the training set (0.840, 0.866, and 0.846, respectively) and validation set (0.746, 0.783, and 0.741, respectively) were consistent with comparable performance. According to the calibration curve, the nomogram predicted survival accurately matched the actual survival rate. The DCA showed the nomogram got more clinical net benefit in both the training and validation sets. CONCLUSIONS: The effective and convenient nomogram may help clinicians quantify the risk of mortality in maintenance dialysis patients.


Assuntos
Doenças Cardiovasculares , Diálise Renal , Humanos , Estudos Retrospectivos , Albuminas , Índice de Massa Corporal
11.
Int J Biol Macromol ; 258(Pt 2): 129070, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38163506

RESUMO

The tumor microenvironment (TME) is a complex and dynamic system that plays a crucial role in regulating cancer progression, treatment response, and the emergence of acquired resistance mechanisms. The TME is usually featured by severe hypoxia, low pH values, high hydrogen peroxide (H2O2) concentrations, and overproduction of glutathione (GSH). The current development of intelligent nanosystems that respond to TME has shown great potential to enhance the efficacy of cancer treatment. As one of the functional macromolecules explored in this field, albumin-based nanocarriers, known for their inherent biocompatibility, serves as a cornerstone for constructing diverse therapeutic platforms. In this paper, we present a comprehensive overview of the latest advancements in the design strategies of albumin nanosystems, aiming to enhance cancer therapy by harnessing various features of solid tumors, including tumor hypoxia, acidic pH, the condensed extracellular matrix (ECM) network, excessive GSH, high glucose levels, and tumor immune microenvironment. Furthermore, we highlight representative designs of albumin-based nanoplatforms by exploiting the TME that enhance a broad range of cancer therapies, such as chemotherapy, phototherapy, radiotherapy, immunotherapy, and other tumor therapies. Finally, we discuss the existing challenges and future prospects in direction of albumin-based nanosystems for the practical applications in advancing enhanced cancer treatments.


Assuntos
Peróxido de Hidrogênio , Neoplasias , Humanos , Microambiente Tumoral , Imunoterapia , Albuminas , Glutationa
12.
Medicine (Baltimore) ; 103(4): e37088, 2024 Jan 26.
Artigo em Inglês | MEDLINE | ID: mdl-38277525

RESUMO

Age and gender are 2 important factors in the treatment of end-stage chronic kidney disease with hemodialysis. Understanding the influence of these 2 factors can help optimize treatment for this population. This study evaluated gender and age differences in achievement of Kidney Disease Improving Global Outcomes (KDIGO) treatment targets. A cross-sectional study was conducted on 324 chronic hemodialysis patients at a tertiary referral hospital in Ho Chi Minh City, Vietnam. KDIGO treatment targets included treatment time, prescribed Qb, treated blood volume, urea reduction ratio, spKt/V, hemoglobin, albumin, phosphorus, calcium, and parathyroid hormone. Men had significantly higher treatment time (P = .003), prescribed Qb (P = .037) and hemoglobin (P = .031) than women. However, women had significantly higher treated blood volume (P < .001), spKt/V (P < .001) and URR (P < .001). No significant difference between men and women was found in albumin, calcium, phosphorus, and parathyroid hormone. Based on KDIGO treatment targets, women had a significantly higher rate of achievement of spKt/V > 1.2 (91.4% vs 80.7%, P = .005) and URR ≥ 70% (77.0% vs 54.7%, P < .001) than men. A significantly higher rate of treated volume of ≥ 1 L/kg/BW, and phosphorus 2.5 to 4.6 mg/dL was found in women (90.0% and 40.2%) compared to men (68.7% and 27.3%). In contrast, men had a significantly higher rate of prescribed Qb ≥ 300 mL/min (26.7% vs 12.6%, P = .001), albumin ≥ 40 g/L (36.7% vs 26.4%, P = .047), and Hb > 12 g/dL (22.0% vs 11.5%, P = .011) than women. There was no significant difference between men and women in the rate of calcium 8.4 to 10.4 mg/dL, and parathyroid hormone 150 to 600 pg/mL. These differences were not the same across 4 age categories (<60, 60-69, 70-79, and ≥ 80). Most of the differences above were among patients aged < 60 and 60 to 69 years. Although men had higher satisfactory treatment parameters than women, based on KDIGO treatment targets, women received hemodialysis more effectively than men. Treatment targets for patients on hemodialysis should consider gender and age differences.


Assuntos
Nefropatias , Falência Renal Crônica , Masculino , Humanos , Feminino , Cálcio , Centros de Atenção Terciária , Estudos Transversais , Vietnã , Diálise Renal , Falência Renal Crônica/terapia , Hormônio Paratireóideo , Fósforo , Hemoglobinas/análise , Albuminas
13.
J Clin Apher ; 39(1): e22092, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37800533

RESUMO

Therapeutic plasma exchange (TPE) is an effective treatment for several renal disorders, including renal transplant rejection. However, repeated plasma exchanges can result in various metabolic disturbances and complications. We present a 61-year old male with a medical history of type 2 diabetes, hypertension, successfully treated multiple myeloma, and a post-mortem kidney transplantation 7 months prior to presentation. The patient was hospitalized with an antibody-mediated transplant rejection for which treatment with methylprednisolone, TPE with a 40 g/L albumin solution as a replacement fluid, and intravenous immunoglobulins was initiated. After four TPE treatments, the patient developed gastrointestinal complaints and muscle weakness. Despite daily oral bicarbonate supplementation, laboratory tests revealed a hyperchloremic metabolic acidosis: bicarbonate 11.7 mmol/L, chloride 111 mmol/L, and sodium 138 mmol/L. Metabolic acidosis due to citrate accumulation was ruled out with a normal total-to-ionized calcium ratio. After treatment with intravenous bicarbonate supplementation, the symptoms disappeared. Analysis of the albumin solution showed a chloride concentration of 132 mmol/L. This is the first case that describes severe metabolic acidosis after multiple sessions of TPE with an albumin solution in a patient with impaired renal function. The hyperchloremic metabolic acidosis is the result of administration of large volumes of an albumin solution with high chloride concentrations. Special attention should be paid to the acid-base balance during TPE in patients with impaired renal function. Future research should investigate the incidence of hyperchloremic metabolic acidosis during TPE in patients with impaired renal function.


Assuntos
Acidose , Diabetes Mellitus Tipo 2 , Nefropatias , Transplante de Rim , Masculino , Humanos , Pessoa de Meia-Idade , Troca Plasmática/efeitos adversos , Transplante de Rim/efeitos adversos , Bicarbonatos/uso terapêutico , Cloretos/uso terapêutico , Diabetes Mellitus Tipo 2/complicações , Acidose/etiologia , Acidose/terapia , Albuminas/uso terapêutico
14.
Oncology ; 102(1): 30-42, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-37598676

RESUMO

INTRODUCTION: Pembrolizumab (Pemb) therapy in conjunction with carboplatin and paclitaxel (PTX)/nab-PTX has been efficacious in treating non-small cell lung cancer (NSCLC). However, the response predictors of this combination therapy (Pemb-combination) remain undetermined. We aimed to evaluate whether Glasgow prognostic score (GPS), neutrophil-to-lymphocyte ratio (NLR), body mass index (BMI), platelet-to-lymphocyte ratio (PLR), and prognostic nutritional index (PNI) are potential factors in prognosticating the response to Pemb-combination therapy in advanced NSCLC patients. METHODS: We retrospectively recruited 144 NSCLC patients receiving first-line treatment with Pemb-combination therapy from 13 institutions between December 1, 2018, and December 31, 2020. GPS, NLR, BMI, PLR, and PNI were assessed for their efficacy as prognostic indicators. Cox proportional hazard models and the Kaplan-Meier method were used to compare the progression-free survival (PFS) and overall survival (OS) of the patients. RESULTS: The treatment exhibited a response rate of 63.1% (95% confidence interval [CI]: 55.0-70.6%). Following Pemb-combination administration, the median PFS and OS were 7.3 (95% CI: 5.3-9.4) and 16.5 (95% CI: 13.9-22.1) months, respectively. Contrary to PNI, NLR, GPS, BMI, and PLR did not display substantially different PFS in univariate analysis. However, multivariate analysis did not identify PNI as an independent prognostic factor for PFS. Furthermore, univariate analysis revealed that GPS, BMI, and PLR exhibited similar values for OS but not NLR and PNI. Patients with PNI ≥45 were predicted to have better OS than those with PNI <45 (OS: 23.4 and 13.9 months, respectively, p = 0.0028). Multivariate analysis did not establish NLR as an independent prognostic factor for OS. CONCLUSION: The PNI evidently predicted OS in NSCLC patients treated with Pemb-combination as first-line therapy, thereby validating its efficiency as a prognostic indicator of NSCLC.


Assuntos
Albuminas , Anticorpos Monoclonais Humanizados , Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Prognóstico , Avaliação Nutricional , Carboplatina , Neoplasias Pulmonares/tratamento farmacológico , Estudos Retrospectivos , Contagem de Linfócitos , Paclitaxel , Neutrófilos
15.
Int J Biol Macromol ; 257(Pt 2): 128779, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38100959

RESUMO

The effect of pectin concentration on the structural and emulsifying properties of black soldier fly larvae albumin (BSFLA) modified by pH-shifting (pH12) and ultrasound (US) was studied. The results (intrinsic fluorescence, surface hydrophobicity, Fourier transform infrared spectrum, and disulfide bonds) showed that modified BSFLA samples, especially pH12-US, were more likely to bind to pectin through hydrogen bonding, electrostatic interactions, and hydrophobic interactions due to the unfolding of BSFLA, the collapse of disulfide bonds and exposure of hydrophobic groups. Thus, a BSFLA-pectin complex with smaller particle size, more negative charges, and a relatively loose structure was formed. The emulsifying activity (EAI) and stability index (ESI) of pH12-US modified BSFLA were significantly enhanced by the addition of pectin, reaching the highest values (associated with 174.41 % and 643.22 % increase, respectively) at pectin concentration of 1.0 %. Furthermore, the interface modulus of the emulsion prepared by the modified BSFLA was mainly viscous, and had higher apparent viscosity, smaller particle size and droplet size, contributing to higher EAI and ESI. The study findings suggest the addition of pectin to pH12-US treated BSFLA could be used in industry to prepare BSFLA-pectin emulsion with exceptional/desirable properties.


Assuntos
Dípteros , Pectinas , Animais , Larva , Emulsões/química , Pectinas/química , Albuminas , Concentração de Íons de Hidrogênio , Dissulfetos
16.
Sci Rep ; 13(1): 22890, 2023 12 21.
Artigo em Inglês | MEDLINE | ID: mdl-38129637

RESUMO

This study aims to investigate the chemical and mineral composition, antioxidant, analgesic, and anti-inflammatory effects of the aqueous extract of Cistus laurifolius var. atlanticus Pit. (Cistaceae). Additionally, molecular docking interactions of various ligands with antioxidant protein target urate oxidase (1R4U) and anti-inflammatory protein target cyclooxygenase-2 (3LN1), revealing potential dual activities and highlighting specific residue interactions. The chemical characterization focused at first glance on the mineral composition which showed that C. laurifolius extract is a mineral-rich source of potassium (K), magnesium (Mg), manganese (Mn), sodium (Na), phosphorus (P), and zinc (Zn). We next performed, ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) analysis, the latter showed various polyphenols in C. laurifolius extract including Gallic acid as the predominant polyphenol. Isoquercetin, Taxifolin and Astragalin were also among the major flavonoids detected. The antioxidant capacity of C. laurifolius leaves was tested using 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), 2,2-diphenyl-1- picrylhydrazyl (DPPH) and reducing power (RP) assays. In vitro analysis of the anti-inflammatory property of C. laurifolius leaves was conducted by the albumin denaturation test and the in vivo was assessed in the sequel by carrageenan-induced paw edema test. The analgesic activity was evaluated in vivo using tail flick, acetic acid-induced contortion, and plantar tests. The findings showed that the leave extract had a powerful antioxidant activity with an IC50 values of 2.92 ± 0.03 µg/mL (DPPH) and 2.59 ± 0.09 µg/mL (in RP test). The studied extract strongly abolished the induced inflammation (82%). Albumin denaturation test recorded an IC50 value of 210 µg/mL. Importantly, the oral administration of C. laurifolius extract considerably reduced the nociceptive effect of acetic acid in rats, showing a significant analgesic effect in a dose-related manner. Altogether, our results showed that C. laurifolius can be a promising source of phytochemicals for drug development potential.


Assuntos
Antioxidantes , Cistus , Ratos , Animais , Antioxidantes/farmacologia , Antioxidantes/análise , Cistus/química , Polifenóis/farmacologia , Polifenóis/análise , Cromatografia Líquida , Simulação de Acoplamento Molecular , Extratos Vegetais/farmacologia , Extratos Vegetais/química , Espectrometria de Massas em Tandem , Analgésicos/farmacologia , Analgésicos/química , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/química , Ácido Acético , Minerais , Albuminas
17.
Biomolecules ; 13(11)2023 10 26.
Artigo em Inglês | MEDLINE | ID: mdl-38002259

RESUMO

Vitamin D emerged as an important prognostic biomarker in heart failure (HF), with currently highly debated therapeutic implications. Several trials on vitamin D supplementation in HF showed improvements in left ventricular (LV) remodeling and function and health-related quality of life (HRQoL), which did not translate into mid- to long-term beneficial effects regarding physical performance and mortality. We addressed total 25-hydroxyvitamin D (25(OH)D), serum albumin, and uric acid (UA) levels, focusing mainly on vitamin D deficiency, as potential markers of LV systolic dysfunction in HF with reduced and mildly reduced ejection fraction (HFrEF, HFmrEF). Seventy patients with LVEF < 50% were comprehensively evaluated using ECG, echocardiography, lung ultrasound (LUS), blood sampling, and the six-minute walk test (6MWT). HRQoL was also assessed using the Minnesota Living with Heart Failure Questionnaire (MLHFQ). Statistically significant positive correlations were found between LVEF, 25(OH)D, serum UA, and albumin, respectively (p = 0.008, p = 0.009, and p = 0.001). Serum UA (7.4 ± 2.4 vs. 5.7 ± 2.1, p = 0.005), NT-proBNP levels (1090.4 (675.2-2664.9) vs. 759.0 (260.3-1474.8), p = 0.034), and MLHFQ scores (21.0 (14.0-47.0) vs. 14.5 (4.5-25.5), p = 0.012) were significantly higher, whereas 25(OH)D concentrations (17.6 (15.1-28.2) vs. 22.7 (19.5-33.8), p = 0.010) were lower in subjects with severely reduced LVEF. Also, 25(OH)D was independently associated with LVEF in univariate and multiple regression analysis, maintaining its significance even after adjusting for confounders such as age, NT-proBNP, the presence of chronic coronary syndrome, hypertension, and anemia. According to our current findings, 25(OH)D is closely associated with LVEF, further supporting the need to establish correct vitamin D supplementation schemes and dietary interventions in HF. The changes in LVEF, 25(OH)D, serum UA, and albumin levels in HFrEF and HFmrEF indicate a similar pathophysiological background.


Assuntos
Insuficiência Cardíaca , Disfunção Ventricular Esquerda , Humanos , Volume Sistólico , Função Ventricular Esquerda , Qualidade de Vida , Vitamina D , Vitaminas , Albuminas
18.
Int J Mol Sci ; 24(20)2023 Oct 19.
Artigo em Inglês | MEDLINE | ID: mdl-37895052

RESUMO

Blackberry fruit contains high levels of nutrients and phenolic compounds. Blackberry pomace accounts for 20~30% of its whole fruit during processing and is generally treated as fertilizer. Blackberry pomace has many seeds that contain carbohydrates, polyphenols, flavonoids, pectin, protein, and other bioactive nutrients. However, its functional properties and seed protein compositions have not been reported. We used a single-factor experiment, response surface, and Osborne isolate method to extract protein isolate, albumin, globulin, glutelin, and prolamin from blackberry seeds for the first time and evaluated their characteristics and functional properties. Glutelin and protein isolate showed good water-holding capacity, emulsification, and foaming capacity, while albumin and globulin showed good oil-holding capacity and thermal stability. They were found to have good antioxidant activities that might be good DPPH free radical scavengers, especially prolamin, which has the lowest IC50 value (15.76 µg/mL). Moreover, globulin had the lowest IC50 value of 5.03 µg/mL against Hela cells, 31.82 µg/mL against HepG2 cells, and 77.81 µg/mL against MCF-7 cells and a high selectivity index (SI), which suggested globulin had better anti-cervical, antihepatoma, and anti-breast activity but relatively low cytotoxicity. These seed proteins may have great prospects for the development and application of food and drugs in the future.


Assuntos
Globulinas , Rubus , Humanos , Rubus/química , Células HeLa , Sementes/química , Antioxidantes/química , Glutens/análise , Extratos Vegetais/química , Albuminas/análise , Prolaminas/análise
19.
Arq Bras Cir Dig ; 36: e1770, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37878974

RESUMO

BACKGROUND: Despite major advances in the clinical treatment of inflammatory bowel disease, some patients still present with acute colitis and require emergency surgery. AIMS: To evaluate the risk factors for early postoperative complications in patients undergoing surgery for acute colitis in the era of biologic therapy. METHODS: Patients with inflammatory bowel disease admitted for acute colitis who underwent total colectomy at a single tertiary hospital from 2012 to 2022 were evaluated. Postoperative complications were graded according to Clavien-Dindo classification (CDC). Patients with more severe complications (CDC≥2) were compared with those with less severe complications (CDC<2). RESULTS: A total of 46 patients underwent surgery. The indications were: failure of clinical treatment (n=34), patients' or surgeon's preference (n=5), hemorrhage (n=3), toxic megacolon (n=2), and bowel perforation (n=2). There were eight reoperations, 60.9% of postoperative complications classified as CDC≥2, and three deaths. In univariate analyses, preoperative antibiotics use, ulcerative colitis diagnosis, lower albumin levels at admission, and preoperative hospital stay longer than seven days were associated with more severe postoperative complications. CONCLUSIONS: Emergency surgery for acute colitis was associated with a high incidence of postoperative complications. Preoperative use of antibiotics, ulcerative colitis, lower albumin levels at admission, and delaying surgery for more than seven days were associated with more severe early postoperative complications. The use of biologics was not associated with worse outcomes.


Assuntos
Colite Ulcerativa , Colite , Doenças Inflamatórias Intestinais , Humanos , Colite Ulcerativa/tratamento farmacológico , Colite Ulcerativa/cirurgia , Colite Ulcerativa/complicações , Estudos Retrospectivos , Colite/cirurgia , Doenças Inflamatórias Intestinais/cirurgia , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Colectomia/efeitos adversos , Fatores de Risco , Terapia Biológica/efeitos adversos , Antibacterianos , Albuminas
20.
Medicina (Kaunas) ; 59(10)2023 Oct 12.
Artigo em Inglês | MEDLINE | ID: mdl-37893532

RESUMO

Background and Objectives: Paracetamol overdose is a significant global issue due to its widespread use, which can lead to a lack of awareness regarding its potential side effects. Paracetamol can harm the liver, possibly resulting in liver failure. Conversely, this study employed extracts from Petroselinum crispum (PC), known for its rich content of bioactive compounds, with demonstrated antioxidant properties shown in previous research as well as protective effects against various diseases. The primary objective of this study was to investigate the potential protective effects of Petroselinum crispum on altered hematological and biochemical parameters in the blood of rats exposed to paracetamol. Materials and Methods: The study involved twenty Wistar rats divided into four groups. Different groups of male rats were administered PC extract at 200 mg/kg body weight daily for 15 days, along with a standard reference dose of paracetamol at 200 mg/kg. The study assessed hepatoprotection capacity by analyzing liver enzymes such as aspartate aminotransferase (AST), alanine aminotransferase (ALT), bilirubin, albumin, and lipid profiles. Renal safety was evaluated through creatinine, urea, uric acid, lactate dehydrogenase (LDH), and total protein. Additionally, histopathological examinations of the liver and kidneys were conducted. Results: Following Paracetamol overdose, there were reductions in hemoglobin levels, serum total protein, albumin, and uric acid. Paracetamol overdose also elevated levels of several blood biomarkers, including creatinine, urea, nitrogen, ALT, AST, triglycerides, LDH activity, white blood cell count, and platelet count compared to the control group. However, using an ethanolic extract of Petroselinum crispum significantly mitigated the severity of these alterations and the extent of the effect correlated with the dose administered. Parsley extract helped prevent proteinuria and low hemoglobin, which are common side effects of Paracetamol. Conclusions: Therefore, parsley may hold promise in managing liver and kidney conditions-particularly in addressing proteinuria. Ultimately, these results may have implications for human health by potentially mitigating paracetamol-induced renal, hepatic, and hematological toxicity.


Assuntos
Acetaminofen , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Humanos , Ratos , Masculino , Animais , Acetaminofen/toxicidade , Petroselinum , Ratos Wistar , Ácido Úrico/farmacologia , Creatinina/metabolismo , Extratos Vegetais/farmacologia , Extratos Vegetais/uso terapêutico , Extratos Vegetais/metabolismo , Fígado , Proteinúria , Albuminas , Ureia , Hemoglobinas
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