8,199 research outputs found
Učinak zajedničke primjene meloksikama na anestetsko djelovanje natrijevog tiopentala na modelu pilića
Few studies have dealt with thiopental sodium-induced anaesthetic action and the effect of combining meloxicam (a high plasma protein-bound) in 10–15 day old chicks. First, the analgesic median effective dose (ED50) was determined as 35.85 mg/kg, IM by up-and-down routine, while the hypnotic ED50 value was 34.40 mg/kg, IM in the chick model. A thiopental sodium injection (18, 36 and 72 mg/kg, IM) produces a significant dose-responsive hypnotic effect in chicks, determined by the beginning of the lack of a righting reflex, duration and recovery time. Thiopental sodium and meloxicam (72 and 1 mg/kg, IM) in combination shortened the beginning of hypnosis, and significantly extended its duration, with a significant increase in recovery time from the hypnotic effect when compared to the group receiving only thiopental sodium. The same combination also elicited a significant increase in the analgesic percentage and efficacy, and significant increase in the voltage current estimated via using electrical stimulation to induce the ache feeling. No significant changes were found in the concentrations of serum glutamate pyruvate trans-aminase (GPT), glutamate oxalo-acetate trans-aminase (GOT) with body temperature between the two groups, with the exception of a significant change in respiratory rate. The outcomes of this study support the prospect of using thiopental sodium as an anaesthetic agent for veterinary surgical procedures in the chicks, in combination with meloxicam, to produce worthy, consistent, and proficient anaesthesia.Malo se studija bavi anestetskim djelovanjem induciranim natrijevim tiopentalom i učinkom kombiniranja s meloksikamom (visoki stupanj vezivanja na proteine u plazmi) u pilića starih 10- 15 dana. Srednje učinkovita analgetska doza (ED50) ustvrđena je kao 35,85 mg/kg intramuskularno gore-dolje rutinom, dok je hipnotička ED50 vrijednost bila 34,40 mg/kg, intramuskularno na modelu pilića. Injekcija natrijevog pentanola (18, 36 i 72 mg/kg, intramuskularno) stvara značajni hipnotički učinak ovisno o dozi u pilića određivanjem početka izostanka refleksa uspravljanja i tranja u vremenu oporavka. Kombinacija natrijevog tiopentanola i meloksikama (72 i 1 mg/kg, intramuskularno), skratila je početak hipnoze, značajno produljila njezino trajanje uz značajno produljenje vremena oporavka od hipnotičkog učinka u usporedbi sa skupinom koja je primala samo natrijev tiopentanol. U isto vrijeme ista je kombinacija izazvala značajan porast analgetskog postotka i učinkovitosti uz značajan porast napona struje procijenjen uporabom električne simulacije za induciranje osjeta boli. Uočeno je da nema značajne promjene koncentracija glutamat-piruvat transaminaze (GPT) i glutamat-oksaloacetat transaminaze (GOT) u krvi s tjelesnom temperaturom, osim značajne promjene respiratorne frekvencije između dvije navedene skupine. Rezultati ove studije govore u prilog uporabe natrijevog tiopentanola kao anestetskog sredstva za veterinarske kirurške postupke u pilića čiji se učinci mogu pojačati uporabom meloksikama u svrhu postizanja dobre, dosljedne i učinkovite anestezije
Artifact Rejection Methodology Enables Continuous, Noninvasive Measurement of Gastric Myoelectric Activity in Ambulatory Subjects.
The increasing prevalence of functional and motility gastrointestinal (GI) disorders is at odds with bottlenecks in their diagnosis, treatment, and follow-up. Lack of noninvasive approaches means that only specialized centers can perform objective assessment procedures. Abnormal GI muscular activity, which is coordinated by electrical slow-waves, may play a key role in symptoms. As such, the electrogastrogram (EGG), a noninvasive means to continuously monitor gastric electrical activity, can be used to inform diagnoses over broader populations. However, it is seldom used due to technical issues: inconsistent results from single-channel measurements and signal artifacts that make interpretation difficult and limit prolonged monitoring. Here, we overcome these limitations with a wearable multi-channel system and artifact removal signal processing methods. Our approach yields an increase of 0.56 in the mean correlation coefficient between EGG and the clinical "gold standard", gastric manometry, across 11 subjects (p < 0.001). We also demonstrate this system's usage for ambulatory monitoring, which reveals myoelectric dynamics in response to meals akin to gastric emptying patterns and circadian-related oscillations. Our approach is noninvasive, easy to administer, and has promise to widen the scope of populations with GI disorders for which clinicians can screen patients, diagnose disorders, and refine treatments objectively
MOLECULAR AND CHEMICAL THERAPEUTIC FEATURES OF URTICA SPECIES
The present review study was conducted to review the current understanding of molecular aspects of Urtica species. We refer to the most recent published articles addressing the therapeutic potential of this plant. A wide spectrum of diseases has been associated with Urtica species including cancer, arthritis, autoimmune diseases, diabetes, and fatigue. Some molecular mechanisms and chemical properties have been discussed. Taken together, studies have confirmed the beneficial effects of Urtica all over the world and understanding of the molecular mechanisms underlying the beneficial effects opens new horizon to understand new therapeutic options. The extracts of Urtica should be prepared based on separating effective ingredients for optimal therapeutic benefits
Heat Shock Protein70 as Biomarker in Bladder Cancer
The present study aimed to shed light on the urine HSP70 concentration of patients with urinary bladder carcinoma UBC and control subjects as new urinary biomarker. The second aim was to associate this protein concentration with UBC stage and grade in patients with UBC. A direct ELISA was used to quantify urine HSP concentrations in 58 patients with urinary bladder carcinoma UBC with different grades (G) and stages (T) all malignant of them was transitional cell carcinoma (TCC) type , 15 from patients with urinary Bladder disorders other than cancer UBD and 15 healthy subjects(control) . Urine concentrations of HSP70 were elevated in patients with UBC compared to those without UBC (healthy and UBD, P< 0.5). There was a high significant between mean level of HSP70 in patients with T2 tumor stage as compared with patients with stage T3 . Also, there was a high significant increased mean level of HSP70 in patients with G3 as compared with patients with grad1 G1
Multiple exciton generation in nano-crystals revisited: Consistent calculation of the yield based on pump-probe spectroscopy
Multiple exciton generation (MEG) is a process in which more than one exciton
is generated upon the absorption of a high energy photon, typically higher than
two times the band gap, in semiconductor nanocrystals. It can be observed
experimentally using time resolved spectroscopy such as the transient
absorption measurements. Quantification of the MEG yield is usu- ally done by
assuming that the bi-exciton signal is twice the signal from a single exciton.
Herein we show that this assumption is not always justified and may lead to
significant errors in the estimated MEG yields. We develop a methodology to
determine proper scaling factors to the signals from the transient absorption
experiments. Using the methodology we find modest MEG yields in lead
chalcogenide nanocrystals including the nanorods
The Relationship of CXCL12 with Sperm Agglutination and Anti-Sperm Antibody Among Infertile Men
Background: It is known that structural elements like the ‘blood-testis barrier’ (BTB) and local & systemic tolerance mechanisms help to maintain testicular homeostasis, which shields germ cells and mature sperms from immune attack. Any damage to this barrier could result in immune attack and may cause infertility.Methods: The most important goal of this study was to find the vital connection between male infertility and immunological factors (CXCL12 and anti-sperm antibody). During the months of October 2021 and July 2022, a total of 144 samples were taken from patients who sought to have infertility tested. Semen and blood samples were taken from the subjects to assess seminal plasma CXCL12 levels and the prevalence of anti-sperm antibody (ASA) in their serum. Alternatively, research on sperm function parameters, sperm agglutination risk, and its relationship to ASA and CXCL12.Result: statistically there was no ‘significant’ difference in CXCL12 levels across study groups in this investigation. The prevalence of sperm agglutination was 23.61% across all patients under study, the majority of whom had asthenozoospermia. In contrast, 60% of the samples from ASA-positive patients were agglutinated. The results revealed a relatively weak positive link that may call for additional research even if there was no significant statistical correlation in the relationship between CXCL12 and sperm functions and ASA.Conclusion: The findings of this study suggest that ASA affects seminal fluid parameters, which in turn affects male fertility, and that a weak, non-significant association between CXCL12 and sperm function could impair sperm function by reducing sperm motility. Sperm agglutination could be a sign of immunological infertility. ASA can impact male fertility in a number of ways. Others had to do with sperm agglutination. Keywords: CXCL12; Anti-sperm antibody; ASA; Sperm agglutination; Sperm function
Alterations in Immune Parameters ADP, ANA, IL-1, IL-6, IL-8, STAT-4, and TNF Alpha in Patients with Rheumatoid Arthritis and Osteoarthritis
Background: Rheumatoid arthritis (RA) and osteoarthritis (OA) are chronic joint diseases with distinct pathophysiological mechanisms, but both involve alterations in immune parameters. This research investigates the alterations in several immune parameters, specifically adiponectin (ADP), antinuclear antibodies (ANA), interleukin-1 (IL-1), interleukin-6 (IL-6), interleukin-8 (IL-8), signal transducer and activator of transcription 4 (STAT-4), and tumor necrosis factor-alpha (TNF Alpha), in patients with rheumatoid arthritis (RA) and osteoarthritis (OA). Also, the current study aims to identify the changes occurring in the physiological and immune parameters of people suffering from rheumatic diseases, as Evaluation of Immunological Inflammatory biomarkers levels ADP, ANA, IL1, IL6, IL8, STAT-4 and TNF-α.
Material & Methods: A cross-sectional laboratory-based study with 90 patient’s participant was conducted. Using ELISA kits and laboratory tests, various biomarkers (Immunological Inflammatory biomarkers levels ADP, ANA, IL1, IL6, IL8, STAT-4 and TNF-α were measured among rheumatoid arthritis and Osteoarthritis patients.
Results: The findings revealed elevated levels of IL-1, IL-6, IL-8, STAT-4, and TNF Alpha in RA patients, reflecting a heightened inflammatory state. In contrast, OA patients exhibited a more moderate increase in these parameters, suggesting differing immune activation pathways. ADP and ANA levels showed distinct variations between the two patient groups, indicating their potential roles in the pathogenesis and progression of RA and OA.
Conclusion: These results contribute to a better understanding of the immune mechanisms underlying RA and OA, highlighting the importance of targeted therapeutic strategies to manage these conditions effectively. Further research is recommended to explore the clinical implications of these findings and develop personalized treatment approaches
Synthesis, characterization and evaluation of antiinflammatory properties of novel α, β-unsaturated ketones
Purpose: To prepare and characterize alicyclic aromatic chalcone derivatives, and study their antibiotic and anti-inflammatory properties.Methods: Claisen-Schmidt (aldol condensation) base-catalyzed condensation was used for preparation of chalcone derivatives (compounds I - IV), and the products were characterized using ultraviolet-visible spectroscopy (UV), FT-IR spectroscopy, proton nuclear magnetic resonance (1H-NMR), carbone 13CNMR and mass spectroscopy (MS). The antibacterial effect of the compounds was determined against Baci. cereus, Staph. Aureus, E. coli, and Pseudomonas Aeruginosa. In addition, their anti-inflammatory effects were assayed using cotton granule-induced granuloma in mice. The results were compared with those for diclofenac, a standard drug. The synthesized derivatives were subjected to theoretical studies on their stabilities, and some chemical parameters were calculated using density function theory [DFT].Results: Using Claisen-Schmidt reaction, it was possible to prepare stable chalcone derivatives, such as derivatives of 2-(3-phenyl acryloyl)cyclopentan-1-one, with good results. Depending on the substituted group, it was also shown that the derivatives had effective biological effects. Compound IV displayed a noticeable antibacterial effect against Staph. aureus and E. coli. The prepared chalcone derivatives exerted markedly variable anti-inflammatory effects.Conclusion: These results indicate that Claisen-Schmidt reaction is not limited to the preparation of chalcone derivatives from diphenyl structures only. Stable alicyclic aromatic structures can also be used. This results in derivatives with good biological effects.
Keywords: Chalcones, Claisen-Schmidt, Anti-inflammatory effects, Granuloma, Aldol Condensatio
Synthesis, characterization and investigation of antibacterial activity for some new functionalized luminol derivatives
ABSTRACT. The present study describes synthesis of some new luminol derivatives, which might play an important role in biological active agents. These new synthesized compounds are functionalized based on luminol (LM) with different carboxylic drugs such as mefenamic acid, ibuprofen, diclofenac sodium, and ampicillin). Synthesis processes was conducted by converting carboxylic group in the investigated drugs into acid chloride group by reacting with SOCl2. Then the synthesized chloride drug derivatives were reacted with luminol in presences of DMSO and TEA to yield the final target molecules. These compounds were characterized using FTIR, NMR and CHNS techniques. Besides that, their physical properties and solubility were also investigated. Biological activity of the derivatives (TH1-TH4) was investigated using a pathogenic bacterium, Staphylococcus aureus (gram +ve), and Escherichia (E. coli) (gram -ve). The obtained results for antibacterial activity showed that TH1-TH4 derivatives have higher antibacterial activity against these types of bacteria in comparison with pure LM compound and the investigated drugs.
KEY WORDS: Luminol, Mefenamic acid, Ibuprofen, Diclofenac sodium, Ampicillin
Bull. Chem. Soc. Ethiop. 2023, 37(1), 159-169.
DOI: https://dx.doi.org/10.4314/bcse.v37i1.13  
Role of TGF-?1 in Urinary Bladder Carcinoma
The present study aimed to evaluate sera TGF- ?1 concentration in patients with urinary bladder carcinoma (UBC). All malignant of them was transitional cell carcinoma (TCC) type , patients with urinary bladder disorders (UBD ) and healthy control , and to study the correlation between sera TGF-?1 levels and tumor stages and grades in UBC patients . A direct ELISA test was used to quantify the seraTGF-?1 concentrations in sera of 58 patients with urinary bladder carcinoma UBC of different grades (G) and stages (T) all malignant of them was transitional cell carcinoma (TCC) type , 15 from patients with UBD and 15 healthy subjects . Sera levels of TGF-?1 were elevated in patients with UBC and UBD compared to healthy (P ? 0.01) .There was no association between tumor stages and serum level of TGF-?1 (P?0.05) . Whereas there was an association between serum levels of TFG-?1 and tumor grades (p ?0.05) . Increased serum level was found in high grades G?2 of patient with UBC
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