The present disclosure discloses a method for preparation of derivatives of gram-positive bacteria surface capsular polysaccharide, and belongs to the field of carbohydrate chemistry. The present disclosure takes glucose as a glycosyl donor to obtain a target β-glucosidic bond, then successfully synthesizes a disaccharide building block through a method of redox of a glucose C-2 site, and then takes the disaccharide building block as a repeat unit to synthesize a target oligosaccharide structure such as a derivative [.fwdarw.3)-α-D-Manp-(1.fwdarw.4)-β-D-Rhap-(1.fwdarw.].sub.5-Linker of gram-positive bacteria cell wall capsular polysaccharide. A reduction end of decose is linked with a linker to be linked with a protein to make glycoconjugates for immunological studies. The method provided by the present disclosure is simple, time-saving, labor-saving and low-cost, and the resultant derivatives of the gram-positive bacteria surface capsular polysaccharide may be used for development and preparation of medicine related to autism.

The present invention is directed to polymerized products and compositions useful for the treatment and prevention of amyloid disease in a subject. The invention further relates to isolated antibodies that recognize a common conformational epitope of amyloidogenic proteins or peptides that are useful for the diagnosis, treatment, and prevention of amyloid disease.

The present disclosure relates to methods of diagnosing a dysbiosis in a subject, methods of determining a suitable treatment, and methods of treating a dysbiosis. In some aspects, the present disclosure relates to diagnosing or determining a subtype of irritable bowel syndrome (IBS).

Featured are biomarkers for, e.g., diagnosis and prognosis of spinal muscular atrophy (SMA) as well as identification of responders to treatment of SMA. Also provided are methods of treating subjects with SMA.

The present application relates to a non-human mammal model of a human neurodegenerative disorder, methods of producing the non-human mammal model, and methods of using the non-human mammal model to identify agents suitable for treating a neurodegenerative disorder. The present application also relates to methods of treating neurodegenerative disorders and restoring normal brain interstitial potassium levels.

The present invention relates to an antibody specifically binding the carboxymethylated catalytic subunit of protein phosphatase 2A (PP2Ac). Also provided are diagnostic uses of said antibody and screening methods employing the inventive antibody.

Methods of diagnosis and methods of treatment and prevention for autism spectrum disorder are provided using decoy antigens to maternal brain-reactive antibodies.

The present disclosure provides treatments for neurodegenerative disorders and more particularly to methods for treatment of patients with Multiple Sclerosis (MS), Amyotrophic Lateral Sclerosis (ALS), or Alzheimer's disease of different degrees of severity. The methods for treatment of patients who have suffered neurodegenerative diseases and specifically MS, ALS, or Alzheimer's disease includes administering a xenon gas mixture in subjects with elevated levels of neurodegenerative microglia (MGnD), e.g., determined based on levels of inflammatory biomarkers, measured in blood, serum and CSF, or levels of CLEC7A (Dectin-1)/Translocator Protein (TSPO) expression, e.g., measured using TSPO imaging.

The invention provides antibodies that specifically bind to transthyretin (TTR). The antibodies can be used for treating or effecting prophylaxis of diseases or disorders associated with TTR accumulation or accumulation of TTR deposits (e.g., TTR amyloidosis). The antibodies can also be used for diagnosing TTR amyloidosis and inhibiting or reducing aggregation of TTR, among other applications.

Some embodiments herein relate generally to compositions comprising microbial organisms and/or metabolites for improving the behavior of a subject, such as a subject having autism spectrum disorder (ASD), and methods of using the same. Some embodiments herein relate generally to profiles of gut bacteria and/or metabolites useful for determining a risk, presence, and/or severity of ASD.