Related Experiment Video
Updated: Jan 22, 2026

03:26
Author Spotlight: Improving Anesthesia Protocols for Enhanced Mouse Acupuncture Research
Published on: December 8, 2023
1.9K
Spastic Paraplegia Accompanied by Extrapyramidal Sign and Frontal Cognitive Dysfunction
Ryo Sasaki1, Yasuyuki Ohta1, Kota Sato1
1Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan.
Internal Medicine (Tokyo, Japan)
|July 12, 2019
Summary
A complicated neurodegenerative disorder, spastic paraplegia, presents with progressive lower limb spasticity. This case expands understanding with unique clinical and brain imaging findings.
Area of Science:
- Neurology
- Neuroimaging
- Neurodegeneration
Background:
- Spastic paraplegia is a complex neurodegenerative disorder characterized by progressive spasticity in the lower limbs.
- Clinical presentations can vary, necessitating further investigation into atypical forms.
Observation:
- The presented case exhibited spastic paralysis and hyperreflexia across all extremities.
- Lead pipe rigidity was noted in the neck and bilateral upper extremities (more pronounced on the right).
- Cognitive assessment revealed decreased scores on frontal tests.
Findings:
- A DaTscan indicated reduced dopamine transporter accumulation in the right dorsal putamen.
- 99mTc-ECD SPECT imaging showed hypoperfusion in the bilateral frontal lobes.
- These findings correlate clinical symptoms with neuroimaging abnormalities.
Implications:
- This case broadens the spectrum of spastic paraplegia presentations.
- It highlights the utility of integrated clinical and advanced neuroimaging for diagnosing complex neurological disorders.
- Further research may elucidate the specific mechanisms underlying this complicated spastic paraplegia variant.
Related Concept Videos
Signs of Puberty
1.5K
Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
1.5K
Introduction to the Sign Test
1.3K
The sign test is an important tool in nonparametric statistics, offering a straightforward yet effective method for analyzing matched pairs, nominal data, or hypotheses concerning the median of a population. It transforms data points into positive or negative signs, avoiding the need for assumptions about data distribution and instead focusing on the direction of change. It is particularly valuable when data does not conform to the normal distribution requirements of many parametric tests. For...
1.3K
Sign Convention
3.4K
When analyzing a beam subjected to various loads, it is crucial to understand the internal forces and moments generated within the structure. These internal forces can be broadly classified into normal forces, shear forces, and bending moments. To determine these forces and moments, we use the method of sections and apply a specific sign convention based on their direction and the side of the section being analyzed.
The normal force acts perpendicular to the beam's cross-section and can...
The normal force acts perpendicular to the beam's cross-section and can...
3.4K
Sign Test for Nominal Data
384
The sign test is a nonparametric method used to evaluate hypotheses about the median of a single sample or to compare the medians of two related samples. The sign test is particularly useful when dealing with nominal data, which includes distinct categories without an inherent order, such as names, labels, and preferences. Nominal data restricts statistical analysis to evaluating population proportions rather than mean or median values that require continuous data.
For example, consider a...
For example, consider a...
384
Introduction to Vital Signs
7.7K
Vital signs are physiological measurements that help key into the status of the body's essential functions. These include body temperature, pulse rate, respiratory rate, and blood pressure, commonly abbreviated as T, P, R, and BP. Some healthcare settings also consider oxygen saturation (SpO2) and, in specific contexts, pain and level of consciousness as additional vital signs.
Vital signs help healthcare professionals assess an individual's well-being and detect any functional changes...
Vital signs help healthcare professionals assess an individual's well-being and detect any functional changes...
7.7K
Cognitive Dissonance
36.8K
Social psychologists have documented that feeling good about ourselves and maintaining positive self-esteem is a powerful motivator of human behavior (Tavris & Aronson, 2008). In the United States, members of the predominant culture typically think very highly of themselves and view themselves as good people who are above average on many desirable traits (Ehrlinger, Gilovich, & Ross, 2005). Often, our behavior, attitudes, and beliefs are affected when we experience a threat to our...
36.8K

