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Skeletal and cardiac myopathy in HIV-1 transgenic rats.

The mechanism by which human immunodeficiency virus (HIV)-1 infection in humans leads to the erosion of lean body mass is poorly defined. Therefore, the purpose of the present study was to determine whether transgenic (Tg) rats that constitutively overexpress HIV-1 viral proteins exhibit muscle wasting and to elucidate putative mechanisms. Over 7 mo, Tg rats gained less body weight than pair-fed controls exclusively as a result of a proportional reduction in lean, not fat, mass. Fast- and slow-twitch muscle atrophy in Tg rats did not result from a reduction in the in vivo-determined rate of pr

Development of PEG-PLGA based Intravenous Low Molecular Weight Heparin (LMWH) Nanoparticles Intended to Treat Venous Thrombosis.

BACKGROUND: Anticoagulant therapy is effective in the treatment of DVT. In this regard, LMWH demonstrated significant promise. It is widely used clinically. The goal of this study was to prepare and evaluate intravenous sustained release stealth nanoparticles encapsulating LMWH using PLGA (polylactidecoglycolide) and different grades of PEG (poly ethylene glycols). METHODS: The nanoparticles were prepared using w/o/w solvent evaporation technique. Prepared nanoparticles were evaluated for particle size, encapsulation efficiency, in-vitro drug release, anti-thrombotic activity in venous thromb

Modulation of drug release by utilizing pH-independent matrix system comprising water soluble drug verapamil hydrochloride.

The present study was undertaken to investigate the effect of hydrophilic, plastic and hydrophobic types of polymers and their content level on the release profile of drug from matrix systems. To improve therapeutic efficacy, systemic absorption and patient compliance a sustained release matrix tablets of Verapamil HCl (VHE) has been developed. VHE tablets were prepared by using various polymers like hydrophilic (HPMC K15M CR), plastic (Kollidon SR), hydrophobic (Eudragit RSPO) and combination of best two resulted polymers using direct compression. A 32 full factorial design was applied to stu

Подготовка, характеристика и испытание имплантируемых устройств на основе коллектора, загруженных тизанидином и лидокаином.

Множественный склероз является хроническим нейромундологическим расстройством, которое вызывает постепенную инвалидность, главным образом у молодых людей. Она ложится тяжелым бременем на системы здравоохранения из-за высоких расходов на лекарства и потребностей в долгосрочном уходе. Интенсивные устройства являются перспективной альтернативой для обеспечения устойчивых доз лекарств при лечении хронических заболеваний. Это исследование представляет собой новый подкожный имплантат длительного действия для доставки двух наркотиков: тизанидин (TZ) для управления спастичностью и лидокаин (LD) для по

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… Differential scanning calorimetry and thermogravimetric analysis Differential scanning calorimetry (DSC) was used to analyse the implants, as well as the pure drug and polymer. A Q100 differential scanning calorimeter (TA Instruments, Bellingham, WA) was used for the DSC. … Fig. 9 Pore size distribution curves of blank and LD-loaded tubular membranes Pore size distribution curves of blank and LD-loaded tubular membranes Thermal analysis: differential scanning calorimetry and thermal gravimetric analysis Figure 10 a shows the DSC curves along with their corresponding …

8-Oxo-7,8-dihydropurines as Building Blocks to Enhance the Selectivity of an RNA Aptamer for Aminoglycosides.

The use of nucleic acids as potential therapeutic tools, sensors, or biomaterials, among other applications, has dramatically increased. Amo … x1) backbones, and their affinities were measured via circular dichroism (CD). Isothermal titration calorimetry (ITC) was used to corroborate the use of CD as a reliable technique. It was determined that incorporation of 8-oxodG at position-12 within DNA (OG12-DNA) led to increased selectivity toward neomycin or ribostamycin (Kd ≈ 2.5 and 2.2 μM), displaying …

Pre-assembled nanospheres in mucoadhesive microneedle patch for sustained release of triamcinolone in the treatment of oral submucous fibrosis.

OBJECTIVES: Drug-loaded mucoadhesive silk fibroin (SF) microneedle patch can overcome the limitations of low bioavailability and significant … ccessful synthesis. Its viscoelasticity was characterized by a rheometer, and differential scanning calorimetry analyzed thermal properties. Tensile tests evaluated the interfacial bonding strength between the adhesive layer and microneedle base to ensure no detachment during use. Adhesion to wet oral mucosal tissues was tested and compared to commercial oral …

Full-length recombinant antibodies from Escherichia coli: production, characterization, effector function (Fc) engineering, and clinical evaluation.

Although several antibody fragments and antibody fragment-fusion proteins produced in Escherichia coli (E. coli) are approved as therapeutic … igen; IBs Inclusion bodies; IgG1-4 Immunoglobulin 1-4; IP Intraperitoneal; ITC Isothermal titration calorimetry; ITP Immune thrombocytopenia; IV Intravenous; kDa Kilodalton; KiH Knob-into-Hole; mAb Monoclonal antibody; MAC Membrane-attack complex; mCRC Metastatic colorectal cancer; MM Multipl myeloma; MOA Mechanism of action; MS Mass spectrometry; MUC1 Mucin …

CBP30, a selective CBP/p300 bromodomain inhibitor, suppresses human Th17 responses.

Th17 responses are critical to a variety of human autoimmune diseases, and therapeutic targeting with monoclonal antibodies against IL-17 and IL-23 has shown considerable promise. Here, we report data to support selective bromodomain blockade of the transcriptional coactivators CBP (CREB binding protein) and p300 as an alternative approach to inhibit human Th17 responses. We show that CBP30 has marked molecular specificity for the bromodomains of CBP and p300, compared with 43 other bromodomains. In unbiased cellular testing on a diverse panel of cultured primary human cells, CBP30 reduced imm

Release of metronidazole from electrospun poly(L-lactide-co-D/L-lactide) fibers for local periodontitis treatment.

OBJECTIVES: We aimed to achieve detailed biomaterials characterization of a drug delivery system for local periodontitis treatment based on electrospun metronidazole-loaded resorbable polylactide (PLA) fibers. METHODS: PLA fibers loaded with 0.1-40% (w/w) MNA were electrospun and were characterized by SEM and DSC. HPLC techniques were used to analyze the release profiles of metronidazole (MNA) from these fibers. The antibacterial efficacy was determined by measuring inhibition zones of drug-containing aliquots from the same electrospun fiber mats in an agar diffusion test. Three pathogenic pe

Single use of tetracycline with and without diclofenac sodium as local drug delivery in pocket therapy: a clinico-microbiological study.

AIM: Local drug delivery is a non-surgical method in the treatment of periodontitis. Different chemotherapeutic agents are used for local drug delivery; one such agent is tetracycline, a broad-spectrum antibiotic. Recent studies have also shown that the use of non-steroidal anti-inflammatory drugs reduces pro-inflammatory cytokines and acts as host modulator. Thus, an attempt was made to compare and evaluate the efficacy of tetracycline alone and in combination with diclofenac sodium as a local drug delivery. METHODS: A total of 36 sites with chronic periodontitis were divided into three grou

Novel diphenyl dimethyl bicarboxylate provesicular powders with enhanced hepatocurative activity: preparation, optimization, in vitro/in vivo evaluation.

Diphenyl dimethyl bicarboxylate (DDB) is a hepatocurative agent used for treatment of various liver diseases. However, DDB therapeutic effectiveness is restricted by its low oral bioavailability that arises from its poor solubility and dissolution. Aiming at surmounting the aforementioned restrictions, DDB provesicular dry powders exemplified by proniosomes and proliposomes were prepared using film-deposition technique employing sorbitol as a carrier. Upon dilution with water, the provesicular powders rapidly transformed into vesicular dispersions, either liposomes or niosomes, which were char

Molecular characterization of secretory proteins Rv3619c and Rv3620c from Mycobacterium tuberculosis H37Rv.

Rv3619c and Rv3620c are the secretory, antigenic proteins of the ESAT-6/CFP-10 family of Mycobacterium tuberculosis H37Rv. In this article, we show that Rv3619c interacts with Rv3620c to form a 1 : 1 heterodimeric complex with a dissociation constant (K(d)) of 4.8 × 10(-7) M. The thermal unfolding of the heterodimer was completely reversible, with a T(m) of 48 °C. The comparative thermodynamics and thermal unfolding analysis of the Rv3619c-Rv3620c dimer, the ESAT-6-CFP-10 dimer and another ESAT family heterodimer, Rv0287-Rv0288, revealed that the binding strength and stability of Rv3619c-Rv362

Biomimetic synthesis and evaluation of histidine-derivative templated chiral mesoporous silica for improved oral delivery of the poorly water-soluble drug, nimodipine.

In this study, spherical shaped chiral mesoporous silica nanoparticles (CMS) was biomimetic synthesized using histidine derivatives (C16-L-histidine) as template via the sol-gel reaction and employed as poorly water-soluble drug nimodipine (NMP) carrier. Characteristics of CMS and its application as drug carrier were intensively investigated and compared with MCM41. Then NMP was respectively loaded into CMS and MCM41 with the drug: carrier weight ratio of 2:1. Structural features of NMP before and after drug loading were systemically characterized. The results demonstrated that hydrogen bonds

International society of sports nutrition position stand: nutrition and weight cut strategies for mixed martial arts and other combat sports.

Following an extensive literature review, the International Society of Sports Nutrition (ISSN) has developed an official position on nutriti … an efficient longitudinal weight descent. Individual caloric needs can be determined using indirect calorimetry or validated equations such as Mifflin St. Jeor or Cunningham. 6. Protein should be prioritized during longitudinal weight descents to preserve lean body mass, and the timely delivery of carbohydrates supports training demands. Macronutrients should …

pH-dependent complexation of hydroxypropyl-beta-cyclodextrin with chlorin e6: effect on solubility and aggregation in relation to photodynamic efficacy.

OBJECTIVES: The activity of chlorin e6 (Ce6) in photodynamic therapy of cancers is significantly reduced by its propensity to form aggregates. It was postulated that disaggregation of Ce6 could be achieved with the use of hydroxypropyl-beta-cyclodextrin (HP-β-CD) through solubility enhancement. METHODS: An initial phase solubility study of Ce6 was conducted with various concentrations of HP-β-CD at three different pH conditions, i.e. pH 3, pH 5 and pH 7. Solubility-induced disaggregation of Ce6 was illustrated by fluorescence spectroscopy and singlet oxygen generation studies. Interaction bet

Design, biometric simulation and optimization of a nano-enabled scaffold device for enhanced delivery of dopamine to the brain.

This study focused on the design, biometric simulation and optimization of an intracranial nano-enabled scaffold device (NESD) for the site-specific delivery of dopamine (DA) as a strategy to minimize the peripheral side-effects of conventional forms of Parkinson's disease therapy. The NESD was modulated through biometric simulation and computational prototyping to produce a binary crosslinked alginate scaffold embedding stable DA-loaded cellulose acetate phthalate (CAP) nanoparticles optimized in accordance with Box-Behnken statistical designs. The physicomechanical properties of the NESD wer

Машинное обучение выявляет микробиомы и клинические прогнозы устойчивой потери веса после продолжительного поста.

Длительное постирование может улучшить метаболическое здоровье, однако контролируемые данные по здоровым взрослым с более длительным последующим наблюдением и многомерным профилированием ограничены. Мы расследовали немедленное и 12-week ПОСЛЕДУЮЩИЕ ПОСЛЕДУЮЩИЕ ПОСЛЕДСТВИЯ 5-day Быстрое вмешательство в состав тела, кишечный микробиом и циркулирующие и фекальные метаболиты, а также оценка того, прогнозируют ли базовые характеристики индивидуальные реакции на потерю веса. В ходе случайного, контролируемого списка ожидания, 38 здоровые взрослые 5-day быстрого вмешательства с помощью 12-week :: пос

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… Reliable measurement is typically achieved through indirect calorimetry, considered the gold standard [ 13 , 14 ]. Changes in REE may reflect body responses to interventions and contribute to understanding individual variability in weight management and energy requirements. … Indirect calorimetry was conducted following a 30 min resting period while in a supine position within a thermoneutral environment for a duration of 30 min (Quark RMR, COSMED, Italy). …

SEX-DEPENDENT EFFECTS OF ADIPOCYTE STAT3 INHIBITION ON THE INFLAMMATORY RESPONSE DURING SEVERE SEPSIS.

Introduction: Sepsis is a dysregulated host response to infection that can lead to life-threatening organ dysfunction. Clinical and animal s … ion was determined by echo magnetic resonance imaging. Energy metabolism was determined by indirect calorimetry. White adipose tissue morphology was determined by hematoxylin and eosin staining, while STAT3 activation in the white adipose tissue was determined by western blot analysis and immunohistochemistry staining of STAT3 activation/phosphorylation at ty …

[Energy metabolism characteristic with risk of secondary bacterial infection in patients with hepatitis B virus-related chronic liver disease].

Objective: To investigate and analyze the energy metabolism characteristics and the correlation between energy metabolism and the risk of se … nd decompensated liver cirrhosis were defined as severe liver disease group. The Quark RMR indirect calorimetry (COSMED Corporation, Italy) was used to exam the patients' energy metabolism condition, and the incidences of secondary bacterial infection of the patients during hospitalization were recorded. Shapiro-Wilk test and normal QQ plot were used to analy …