No abstract

Rheumatoid arthritis is a chronic systemic inflammatory autoimmune disorder characterized by persistent joint inflammation leading to cartilage and bone damage, disability, and systemic complications. The levels of APR such as SAA serum increase during synovitis. Previous studies have demonstrated the anti-inflammatory effect of M.oleifera leaf extract in the treatment of RA in animals; however, research data on humans remain limited. An experimental study on pre- and post-treatment of 40 RA patients was carried out by dividing subjects into 2 groups, including a standard therapy group and a standard therapy group added with M.oleifera leaf extract. The research was conducted at Dr. Moewardi Hospital, Surakarta from October 2020 to January 2021. The SAA levels were measured using ELISA. Paired T-test was used to analyze the differences in mean SAA levels before and after treatment. There was a significant difference between pre-treatment (346.57±54.40 ng/mL) and post-treatment (314.77±37.40 ng/mL) SAA levels in the standard therapy group added with M.oleifera leaf extract with p=0.01. Pre-treatment and post-treatment SAA levels in the standard therapy group were 322.68±87.01 ng/mL and 302.93±86.51 ng/mL, respectively with p=0.04. The mean of delta SAA in the standard therapy group added with M.oleifera leaf extract (-31.81±4.04 ng/mL) was greater than delta SAA in the standard therapy group (-19.75±4.07 ng/mL) with p=0.26. There was a significant decrease in SAA levels in RA patients on standard therapy and M. oleifera leaf extract.

No abstract

<p>Kajian struktur dan degradasi termal pada membran hibrida poliviniliden fluorida (PVDF)/lempung bentonit (BNT) telah dilakukan. Penelitian ini bertujuan mengetahui pengaruh penambahan BNT terhadap pembentukan fasa PVDF dan sifat termalnya. Membran hibrida PVDF/lempung BNT dibuat dengan metode inversi fasa. Membran yang dihasilkan dikarakterisasi dengan <em>attenuated total reflectance fourier transform infrared</em> (ATR-FTIR), <em>x-ray diffraction</em> (XRD), dan <em>differential scanning calorimetry</em> (DSC). Hasil penelitian menunjukkan membran PVDF/BNT memiliki struktur polimorf PVDF fasa α dan β yang terkonfirmasi dari data FTIR dan XRD. Data DSC menunjukkan penurunan nilai titik leleh (Tm) dengan penambahan BNT, dan dengan rentang suhu pelelehan yang lebih kecil. Kristalisasi PVDF terjadi secara isothermal dan adanya BNT menghasilkan titik kristalisasi (Tc) pada suhu yang lebih tinggi dibandingkan membran PVDF murni. Analisis termal dengan DSC memberikan informasi komprehensif pelelehan dan kristalisasi dari polimorf PVDF pada matriks membran.</p><p id="docs-internal-guid-c92edf53-7fff-cf03-76f3-f207f37c74f5" style="line-height: 1.2; text-align: justify; margin-top: 6pt; margin-bottom: 6pt;" dir="ltr"><strong>Effect of Bentonite toward Polymorph Phase Formation and Thermal Properties of Polyvinylidene Fluoride/Bentonite Hybrid Membranes. </strong>The study of the structure and thermal properties of PVDF/bentonite (BNT) hybrid membranes has been carried out. This study aims to determine the effect of BNT addition on the phase formation and thermal properties of the PVDF. In this study, PVDF/BNT hybrid membranes were prepared through the phase inversion method. The resulting membrane was characterized by Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR), x-ray diffraction (XRD), and differential scanning calorimetry (DSC). The results showed that the PVDF/BNT membrane has a PVDF polymorph structure with α and β phases confirmed by FTIR and XRD data. The DSC data showed that the addition of BNT decrease of the melting point (Tm) and with a smaller melting temperature range. PVDF polymorph crystallization occurs isothermally and the presence of BNT produces a crystallization point (Tc) at a higher temperature than pristine PVDF membrane. Thermal analysis with DSC provides comprehensive information on melting and crystallization of PVDF polymorphs in the membrane matrix.</p>