You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["Disease", "Chemical"].

Please return the output as a JSON object of the format: {"Chemical" : ["Naloxone", ...], "Disease" : ["Hypotensive", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

Reverse or inverted left ventricular apical ballooning syndrome (reverse Takotsubo cardiomyopathy) in a young woman in the setting of amphetamine use. Transient left ventricular apical ballooning syndrome was first described in Japan as "Takotsubo cardiomyopathy." This syndrome has been identified in many other countries. Many variations of this syndrome have been recently described in the literature. One of the rarest is the reverse type of this syndrome, with hyperdynamic apex and complete akinesia of the base (as opposed to the classic apical ballooning). In this article, we report an interesting case of a young woman who presented with this rare type of reverse apical ballooning syndrome occurring after amphetamine use. This report is followed by review of the literature.
{"Chemical": ["amphetamine"], "Disease": ["Takotsubo cardiomyopathy", "left ventricular apical ballooning syndrome", "apical ballooning", "apical ballooning syndrome", "akinesia"]}