[An electrostatically coupled polypeptide affinity multimodal chromatography medium for the purification of antibodies and their separation efficiency].

As the need for antibody production rises, there is an urgent need to lower the costs and enhance the efficiency of the separation process. Currently, the chromatographic media used for antibody separation and purification often focus on individual properties of antibodies, such as affinity, hydrophobicity, and charge, leading to issues like low purification efficiency or inadequate adsorption capacity. To address this, an electrostatically coupled polypeptide affinity medium (FD7-3, 5-diaminobenzoic acid n-sepharose, FD7-DA-Sepharose) was developed for rapid purification of antibodies from cell culture supernatant.

Exosomal circ_0093708 as a potential ferroptosis biomarker in cerebral ischemia-reperfusion injury.

Background: Ferroptosis plays a critical role in neuronal injury following cerebral infarction. However, effective therapeutic strategies targeting ferroptosis after cerebral ischemia-reperfusion injury (CI/RI) remain limited. Exosome-based therapy holds significant promise in this context.

Catestatin attenuates cerebral ischemia/reperfusion injury and suppresses endoplasmic reticulum stress.

Ischemic stroke is one of the leading causes of death worldwide. Catestatin (CST), as a pleiotropic hormone, displays an anti-apoptotic effect, in addition to its known roles in cardiovascular regulation. However, the role of CST in ischemic stroke remains unclear.

The Macular Burden of Calcified Drusen and the Onset of Large Choroidal Hypertransmission Defects in Intermediate AMD.

Purpose: This study used en face swept-source optical coherence tomography (SS-OCT) imaging to follow eyes with intermediate age-related macular degeneration (iAMD) in the presence and absence of calcified drusen (CaD) to determine if the presence and size of CaD increased the risk of forming large choroidal hypertransmission defects (hyperTDs).

Design: Post hoc subgroup analysis of a prospective cohort study.

Methods: Eyes with iAMD were enrolled in a prospective SS-OCT study, and the onset of large hyperTDs was retrospectively analyzed.

Age and body mass index are associated with type Ⅲ aortic arch in patients undergoing digital subtraction angiography.

Background And Purpose: Type Ⅲ aortic arch can increase the difficulty of interventional surgery in patients with cerebrovascular diseases. This study was performed to explore the factors associated with type Ⅲ aortic arch.

Materials And Methods: This observational, multicenter, case-control study was performed in Shaanxi Province, China and involved 841 patients who underwent cerebral angiography at 3 stroke centers from April 2019 to August 2020.

Curcumin Prevents Neuronal Loss and Inhibits Development of Spontaneous Recurrent Seizures via the PPARγ/PTEN/Akt Pathway in Chronic Epilepsy.

Chronic epilepsy is mainly characterized by spontaneous recurrent seizures (SRS). The peroxisome proliferator activated receptor gamma/phosphatase and tensin homolog/protein kinase B (PPARγ/PTEN/Akt) pathway is involved in the pathogenesis of SRS and neuronal loss. Curcumin is a natural compound, and previous studies have shown it provides neuroprotection via anti-inflammation and anti-oxidant effects in many central nervous system (CNS) diseases.

Early response and long-term prognosis of paediatric ITP: Exploration of future management strategies.

Immune thrombocytopenia (ITP) is the most common immunological haemorrhagic disease in childhood. Our retrospective study analysed hospitalized paediatric ITP patients to identify determinants of early treatment response and long-term clinical outcomes. The study found that younger children had a higher 7-day complete response (CR) rate and were more likely to achieve CR in the early stages (p = 0.

Updated Guidelines for Imaging the Choriocapillaris in Eyes with Age-Related Macular Degeneration Using Swept-Source Optical Coherence Tomography Angiography.

Purpose: To update the recommended guidelines when quantifying choriocapillaris (CC) flow deficits (FDs) in eyes with age-related macular degeneration (AMD) using swept-source optical coherence tomography angiography (SS-OCTA).

Design: Evidence-based perspective.

Methods: Review of literature and experience of authors.

Intravitreal Injections of Cord Blood Platelet-Rich Plasma in Dry Age-Related Macular Degeneration: Regenerative Therapy.

Purpose: Intravitreal injections (IVIs) of umbilical cord blood platelet-rich plasma (CB-PRP) were investigated to assess their safety and efficacy in slowing the progression of atrophy in eyes with late-stage dry age-related macular degeneration (AMD).

Design: Randomized, controlled, prospective study.

Subjects: Patients with AMD aged >65 years and diagnosed with bilateral geographic atrophy were enrolled.

Influence of Polyphosphate on the Mineralization Balance of Tooth Enamel.

Dental minerals are in an equilibrium state of demineralization and remineralization, which can be disrupted by pathogenic bacteria to cause dental caries. While the inorganic polymer polyphosphate (polyP) is ubiquitous in living organisms and is also widely involved in mineralization regulations, its specific influence on the mineralization balance of teeth remains unclear. As a concept-and-proof study, the effects of polyP on the demineralization and remineralization of teeth are investigated on dental enamel (the highly mineralized outer covering tissue of teeth) from the perspective of mineralization balance.

Hyperreflective Foci Along the Retinal Pigment Epithelium Predict the Onset of Large Choroidal Hypertransmission Defects in Age-Related Macular Degeneration.

Purpose: In eyes with intermediate age-related macular degeneration (iAMD), we separately quantified the hyperreflective foci (HRF) along the retinal pigment epithelium (rpeHRF) and the intraretinal HRF (iHRF) to determine if the location of the HRF predicted the progression from iAMD to the onset of large persistent choroidal hypertransmission defects (hyperTDs).

Design: Post hoc subgroup cohort analysis of a prospective study.

Methods: A retrospective analysis was performed on a prospective natural history database of eyes with AMD imaged using swept-source optical coherence tomography (SS-OCT).

Extracting mechanical quality factor and eliminating feedthrough using harmonics of thermal-piezoresistive micromechanical resonators.

Thermal-actuation and piezoresistive-detection effects have been employed to pump the effective quality factor of MEMS resonators, targeting simple self-oscillation and better sensing performance in the air. However, the ratio of the pumped effective quality factor to the inherent mechanical quality factor, crucial for characterizing the amplification, is hard to obtain. The main difficulty stems from hidden Lorentz peaks caused by feedthrough effects and the pump effect once the current is applied.

Methylmalonic acidemia with homocystinuria in acute myeloid leukemia: a case report.

Background: Methylmalonic acidaemia (MMA) is a genetic metabolic disorder caused by congenital defects that may result in multisystem damage. However, MMA complicated with acute myeloid leukemia (AML) is very rare.

Case Presentation: Here, we report a case of MMA with AML in a boy aged 7 years and 6 months.

Shunt Dependency Syndrome Combined with Sinus Stenosis after Cyst-peritoneal Shunting of Arachnoid Cyst: A 20-year Rare Complication.

Shunt dependence syndrome is a serious long-term complication characterized by symptoms and signs of increased intracranial pressure with normal-sized lateral ventricles after several years of arachnoid cyst-peritoneal shunting. It is easy to misdiagnose and overlook when combined with sinus stenosis, thus delaying treatment. Here, we present a 35-year-old man with an unexplained headache and binocular horizontal diplopia with high intracranial pressure.

Comparison between Spectral-domain and Swept-source OCT Angiography Scans for the Measurement of Hyperreflective Foci in Age-related Macular Degeneration.

Purpose: Spectral-domain OCT angiography (SD-OCTA) scans were used in an algorithm developed for swept-source OCT angiography (SS-OCTA) scans to determine if SD-OCTA scans yielded similar results for the measurement of hyperreflective foci (HRF) in intermediate age-related macular degeneration (iAMD).

Design: Retrospective study.

Participants: Forty eyes from 35 patients with iAMD.

Correction: Flow and clogging of capillary droplets.

Correction for 'Flow and clogging of capillary droplets' by Yuxuan Cheng , , 2024, https://doi.org/10.1039/D4SM00752B.

Flow and clogging of capillary droplets.

Capillary droplets form due to surface tension when two immiscible fluids are mixed. We describe the motion of gravity-driven capillary droplets flowing through narrow constrictions and obstacle arrays in both simulations and experiments. Our new capillary deformable particle model recapitulates the shape and velocity of single oil droplets in water as they pass through narrow constrictions in microfluidic chambers.

Diameter-dependent classification of dermal vasculature using optical coherence tomography angiography.

Background: Dermal blood vessels beneath the epidermis play critical roles in epidermal homeostasis and are functionally divided into several types, such as capillaries. Optical coherence tomography angiography (OCTA) is a powerful tool for the non-invasive assessment of dermal vasculature. However, the classification of vessel types has been limited.

Longitudinal SS-OCT choroidal imaging following thrombosis of the superior ophthalmic vein.

Purpose: To report longitudinal changes in choroidal thickness and the choroidal vasculature using SS-OCT imaging in a patient with superior ophthalmic vein thrombosis (SOVT).

Observations: In a 93-year-old woman with a left-sided SOVT, the choroid in the left eye was thickened and the choroidal vessels were dilated both superiorly and inferiorly, with greater changes evident in the inferotemporal region of the choroid. After the superior ophthalmic vein was decompressed, a decrease in the choroidal thickness and choroidal vessel dilatation was observed both superiorly and inferiorly.