The present invention relates to a composition comprising, preferably consisting of, (i) a single empty liposome, wherein said single empty liposome is selected from (a) an empty liposome consisting of sphingomyelin and cholesterol, wherein the amount of cholesterol is at least 20% (weight per weight); or (b) an empty liposome consisting of sphingomyelin; or (ii) a mixture of empty liposomes; wherein said mixture of empty liposomes comprises (a) a first empty liposome consisting of sphingomyelin and cholesterol, wherein the amount of cholesterol is at least 20% (weight per weight); and (b) a second empty liposome consisting of sphingomyelin; for use in a method of treating or preventing a viral infection in a mammal, preferably in a human.

The invention provides a compound of Formula I:

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or a pharmaceutically acceptable salt thereof as described herein. The invention also provides pharmaceutical compositions comprising a compound of Formula I, processes for preparing compounds of Formula I, therapeutic methods for treating the proliferation of the HIV virus, treating AIDS or delaying the onset of AIDS symptoms in a mammal using compounds of Formula I.

The invention provides a compound of Formula I:

##STR00001##

or a pharmaceutically acceptable salt thereof as described herein. The invention also provides pharmaceutical compositions comprising a compound of Formula I, processes for preparing compounds of Formula I, therapeutic methods for treating the proliferation of the HIV virus, treating AIDS or delaying the onset of AIDS symptoms in a mammal using compounds of Formula I.

In accordance with the present disclosure, macrocyclic compounds have been discovered that bind to PD-L1 and are capable of inhibiting the interaction of PD-L1 with PD-1 and CD80. These macrocyclic compounds exhibit in vitro immunomodulatory efficacy thus making them therapeutic candidates for the treatment of various diseases including cancer and infectious diseases.

##STR00001##

A fused pyridine ring derivative represented by general formula (I), a preparation method therefor, a pharmaceutical composition containing the derivative, and a use thereof as a therapeutic agent, particularly, in preparation of drugs for preventing and/or treating HIV infection.

##STR00001##

The present invention provides a method of synthesizing celosianin II, a method of synthesizing a betaxanthin, an amyloid-β polymerization inhibitor or a therapeutic or preventive agent for Alzheimer's, an amyloid peptide aggregation inhibitor, and an HIV-1 protease activity inhibitor. A gene having a celosianin II synthesis ability has been isolated from quinoa, and a method of synthesizing celosianin II of the present invention has been constructed. Besides, it has been recognized that celosianin II or the like serves as an active ingredient of each of an amyloid-β polymerization inhibitor or a therapeutic or preventive agent for Alzheimer's, an amyloid peptide aggregation inhibitor, and an HIV-1 protease activity inhibitor.

The subject invention pertains to methods of treating HIV-1 infected subject comprising the administration of growth hormone to a subject infected by HIV-1. The subject may be undergoing co-administration of anti-retroviral therapies (ARTs), may be untreated with anti-retroviral drugs (ARDs) or may be in a period of time where no ART is being administered. Growth hormone may be administered at a fixed dosage for a set period of time or may be administered at a first dosage for a first period of time that may then be increased or decreased to a second dosage for a second period of time.

The subject invention pertains to methods of treating HIV-1 infected subject comprising the administration of growth hormone to a subject infected by HIV-1. The subject may be undergoing co-administration of anti-retroviral therapies (ARTs), may be untreated with anti-retroviral drugs (ARDs) or may be in a period of time where no ART is being administered. Growth hormone may be administered at a fixed dosage for a set period of time or may be administered at a first dosage for a first period of time that may then be increased or decreased to a second dosage for a second period of time.

This disclosure provides, inter alia, systems and methods for testing products for ammonia oxidizing bacteria, quality control, and providing products with ammonia oxidizing bacteria. The systems and methods herein may be used, inter alia, to treat diseases associated with low nitrite levels, skin diseases, and diseases caused by pathogenic bacteria.

Disclosed here is an adenosine derivative prodrug that can have reverse transcriptase inhibitor activity in vivo. This disclosure is also directed to a pharmaceutical composition comprising the adenosine derivative that can be used for the treatment of HIV infection or RNA virus infection.