Tinidazole 500mg tablets

Abstract Backgrounds and Aims This controlled randomized clinical trial was designed to compare effectiveness, side effects, and severity of symptoms before and after therapy between quadruple (QT) and sequential regimens (SQ) for Helicobacter Pylori ( H. pylori ). Methods Patients were randomly allocated into two groups. Group A received a 14‐day QT including pantoprazole 40 mg q12 h, bismuth subcitrate 240 mg q12 h, clarithromycin 500 mg q12 h, and amoxicillin 1000 mg q12 h and group B received ST including pantoprazole 40 mg q12 h and amoxicillin 1000 mg q12 h for the initial 5 days followed by pantoprazole 40 mg q12 h, clarithromycin 500 mg q12 h and tinidazole 500 mg q12 h for the next 5 days. Adverse drug reactions and patients' compliance were assessed after finishing the treatment course and also 4 weeks after. All patients were naive, therefore ST and QT were first‐line therapies. To evaluate severity of symptoms we used Short‐Form Leeds Dyspepsia Questionnaire (SF‐LDQ) before taking the first dose of regimens, at the end of therapy, and also 4 weeks after (follow‐up). Results The mean age in Group A ( n = 83) was 48.55 ± 12.56 and 47.24 ± 12.78 in Group B ( n = 79). No statistically significant differences were observed between the two groups regarding age, gender, endoscopic findings, and also eradication rate. The analysis demonstrated a significant decrease in SF‐LDQ score between baseline and after therapy and baseline and follow‐up in both regimen groups. Both regimens were well tolerated by the majority of patients, and there were no significant differences between the two groups in terms of adverse drug reactions Conclusion This study showed that ST can be used as an alternative first‐line therapy to QT in patients with H. pylori infection.

Abstract licence: CC BY-NC-ND

Điện cực than thuỷ tinh (GC) được biến tính bằng vật liệu composite MnO2/GO và AgNPs/MnO2/GO. Sau quá trình khử điện hóa, vật liệu khử MnO2/ErGO và AgNPs/MnO2/ErGO có diện tích bề mặt hoạt động điện hóa lớn, lần lượt là 0,079 cm2 và 0,087 cm2; điện trở truyền tải điện tích (Rct) là khá nhỏ, lần lượt là 0,188 kW và 0,077 kW. Trong nghiên cứu này, hai chất kháng sinh, gồm chloramphenicol (CAP) và tinidazol (TNZ) hấp phụ lên bề mặt điện cực MnO2/ErGO-GCE và kháng sinh ofloxacine (OFX) hấp phụ lên bề mặt điện cực AgNPs/MnO2/ErGO-GCE. Kết quả cho thấy quá trình hấp phụ xảy ra trong khoảng 3 phút và tuân theo mô hình động học biểu kiến bậc 2 với các giá trị dung lượng hấp phụ bão hòa lần lượt là 1310,16, 1873,41 và 1140,93 mg.g-1. Riêng đối với chất kháng viêm piroxicam (PRX), quá trình khuếch tán bên ngoài lớp dung dịch – điện cực AgNPs/MnO2/ErGO-GCE chiếm ưu thế hơn so với quá trình hấp phụ, trong đó quá trình khuếch tán xảy ra nhanh với thời gian dưới 30 s. Nghiên cứu này đã bổ sung và giải thích cơ chế quá trình khuếch tán – hấp phụ các chất kháng sinh và kháng viêm trên bề mặt điện cực biến tính.

Abstract licence: CC BY-SA

Here in this study, a novel ternary CuS/HKUST‒1/Ni(acac)2 nano photocatalyst (CSHK‒Ni) was developed through a facile modification of HKUST‒1 MOF with Ni(acac)2 metal complex and by immobilizing CuS into the metal-organic framework (MOF). The incorporation of CuS, a narrow bandgap semiconductor, is anticipated to allow easy excitation by visible-light and improve the photocatalytic potential of the formulated catalyst which is validated by the decrease in the bandgap energy from 3.10 eV of pristine MOF to 2.19 eV. Moreover, the anchoring of the metal complex improves the light harvesting behavior by increased conjugation. Photoluminescence studies provided evidence of the effective separation of the photoinduced charge-carriers, reducing the rate of recombination and enhancing the photocatalytic potential of the CSHK‒Ni nanocomposite. The engineered catalyst displayed remarkable efficiency in the degradation of nitroimidazole containing antibiotics, Tinidazole (TNZ) and Metronidazole (MTZ), via H2O2 assisted AOP achieving a maximum photocatalytic efficiency of 95.87 ± 1.64% and 97.95 ± 1.33% in just 30 min under irradiation of visible light at optimum reaction conditions. The possible degradation pathway was elucidated based on the identification of ROS and degradation intermediates via HR‒LCMS and quenching experiments. Meanwhile, the chemical oxygen demand (COD) and total organic carbon (TOC) removal were also examined, encompassing the discussing of various aspects including reaction conditions, influence of various oxidizing agents, competing species and dissolved organic substrates present in the wastewater, marking the novelty of the study. This research elucidated the role of the CSHK‒Ni nanocomposite as an interesting photocatalyst in the elimination of emerging nitroimidazole containing pharmaceutical pollutant under visible-light exposure, presenting an exciting novel avenue for a cleaner and greener environment in the days to come.

Abstract licence: CC BY-NC-ND

Abstract Helicobacter pylori (H. pylori) infection is one of the primary risk factors of peptic ulcer disease worldwide. Treatment of H. pylori with the conventional dosage form is often challenging due to the ineffective reach of the antibiotics to the inner layers of gastric mucosa, where the organism resides. This study developed an eco-friendly, stability-indicating RP-HPLC method to simultaneously estimate amoxicillin and tinidazole from mucoadhesive formulation targeting H. pylori infection. The mucoadhesive GRDDS formulation of antibiotics was developed with a goal of improving bioavailability at the gastric mucosa. The multivariate Box–Behnken design (BBD) was utilized to optimize chromatographic parameters. Independent variable such as ratio of mobile phase, flow rate, pH and injections volume were optimized using DoE, and analyzed using perturbation plots. A desirability of 0.981 was achieved for the optimized variables. The optimized method utilized methanol and phosphate buffer (25:75) at pH 6.3 as the mobile phase in an isocratic elution mode on a Luna ODS C18 column kept at 25 °C as the stationary phase. The method was linear from 0.25 to 20 µg/mL, for both the drugs with R 2 values of 0.9993 and 0.9997 for amoxicillin and tinidazole, respectively. This validated RP-HPLC technique demonstrated selectivity in the presence of possible degradation products and excipients present in the mucoadhesive GRDDS beads. The method was used for the determination of entrapment efficiency and in vitro release profile for tinidazole and amoxicillin in the mucoadhesive GRDDS formulation. Graphical Abstract

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The in vitro resistance of selected red/orange complex periodontal pathogens to tinidazole was compared with four other antibiotics. Subgingival biofilm samples from 88 adults with severe periodontitis were anaerobically incubated on enriched Brucella blood agar with and without supplementation with tinidazole (16 mg/L), metronidazole (16 mg/L), amoxicillin (8 mg/L), doxycycline (4 mg/L), or clindamycin (4 mg/L). Growth of Porphyromonas gingivalis, Tannerella forsythia, Prevotella intermedia/nigrescens, Parvimonas micra, Fusobacterium nucleatum, Streptococcus constellatus, or Campylobacter rectus on antibiotic-supplemented plates indicated their in vitro antibiotic resistance. Tinidazole inhibited all test species, except P. intermedia/nigrescens, P. micra, and S. constellatus in 3.8%, 10.2%, and 88.9% of species-positive patients, respectively. Significantly fewer patients yielded tinidazole-resistant test species, and had significantly lower subgingival proportions of tinidazole-resistant organisms, than patients with amoxicillin, doxycycline, or clindamycin-resistant species, but not those with metronidazole-resistant strains. Joint in vitro species resistance to tinidazole and amoxicillin, or metronidazole and amoxicillin, was rare. Tinidazole performed in vitro similar to metronidazole, and markedly better than amoxicillin, doxycycline, or clindamycin, against fresh clinical isolates of red/orange complex periodontal pathogens. As a result of its similar antimicrobial spectrum, and more convenient once-a-day oral dosing, tinidazole should be considered in place of metronidazole for systemic periodontitis drug therapy.

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Based on sonochemistry, green synthesis methods play an important role in the development of nanomaterials. In this work, a novel chitosan modified MnMoO4/g-C3N4 (MnMoO4/g-C3N4/CHIT) was developed using ultrasonic cell disruptor (500 W, 30 kHz) for ultra-sensitive electrochemical detection of tinidazole (TNZ) in the environment. The morphology and surface properties of the synthesized MnMoO4/g-C3N4/CHIT electrode were characterized using X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM) and transmission electron microscope (TEM). Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques were utilized to assess the electrochemical performance of TNZ. The results indicate that the electrochemical detection performance of TNZ is highly efficient, with a detection limit (LOD) of 3.78 nM, sensitivity of 1.320 µA·µM−1·cm−2, and a detection range of 0.1–200 μM. Additionally, the prepared electrode exhibits excellent selectivity, desirable anti-interference capability, and decent stability. MnMoO4/g-C3N4/CHIT can be successfully employed to detect TNZ in both the Songhua River and tap water, achieving good recovery rates within the range of 93.0 % to 106.6 %. Consequently, MnMoO4/g-C3N4/CHIT’s simple synthesis might provide a new electrode for the sensitive, repeatable, and selective measurement of TNZ in real-time applications. Using the MnMoO4/g-C3N4/CHIT electrode can effectively monitor and detect the concentration of TNZ in environmental water, guiding the sewage treatment process and reducing the pollution level of antibiotics in the water environment.

Abstract licence: CC BY