Background technology
Body weight is by the relative equilibrium decision of food intake and energy expenditure, though factors such as heredity can cause fat, but the common cause of weight increase and physiological obesity is to take in too high heat and/or energy expenditure reduces, and the excess fat that causes is thus piled up the sickness rate of cardiovascular and cerebrovascular vessel such as can increasing hypertension, hyperlipidemia, non-insulin-dependent diabetes mellitus, coronary heart disease, sleep apnea syndrome to overweight or obese people and respiratory system disease.
Can partly lose weight or prevent obesity by diet, behavior change and medicine, medicine commonly used has orlistat, can reduce fat content from the diet of intestinal absorption; Sibutramine is by suppressing the reuptake appetite-suppressing of norepinephrine and 5-hydroxy tryptamine; Fenfluramine is by discharging 5-hydroxy tryptamine and suppressing the reuptake appetite-suppressing of 5-hydroxy tryptamine subsequently.But slightly to the untoward reaction of severe, for example, fenfluramine is through the remarkable risk that increases cardiovascular injury of clinical proof meeting for most medicines, and U.S. FDA was removed the city in 1999 with it.The common adverse reactions of other medicine that loses weight comprises giddy, headache, cardiopalmus, insomnia, diarrhoea, intestinal spasm and hypertension etc.Except that untoward reaction, many lose weight medicine for example amphetamine also have addiction.
Nerve growth factor NGF is a kind of neurocyte regulatory factor of being found in mouse tumor cell in nineteen fifty-three by Italian embryologist Rita Levi-Montalcini and Americanized scholar StanleyCohen, its main source is the target cell of neural crest neuron domination, neurogliocyte as maincenter, the schwann cell of periphery, skeletal muscle and some bodies of gland; Adult mice submaxillary gland, cattle seminal fluid, snake venom and people's Placenta Hominis all contain abundant NGF.
Over more than 50 year, the countries in the world scholar is deepening continuously and is expanding the research of NGF, finds that NGF has obvious effect to nerve injury and immune system and other system, but animal and human's body is not seen obvious toxic and side effects as yet.
At present domesticly be mainly used in the treatment of brothers' nerve injury, alzheimer disease, neural graft, cerebral ischemia diseases, tip peripheral neuritis etc. as the medicine of Main Ingredients and Appearance listing, but do not see that the fat report of NGF treatment is arranged with NGF.
Summary of the invention
The object of the present invention is to provide the application of nerve growth factor in the effective slimming medicine of preparation.
For achieving the above object, the present invention is by the following technical solutions:
The application of nerve growth factor in the effective slimming medicine of preparation.
We find in the research that NGF is carried out, and use NGF2 after week to rat, and the body weight gain of rat is not obvious, and is dependence with dosage; After 4 weeks of administration, the phenomenon that this body weight does not increase still exists, so we test at this situation, and has found NGF can be used for the losing weight beyond thought effect of function.
Advantage of the present invention is: 1) effectively lose weight: compare with present slimming many medicines, nerve growth factor can directly suppress the growth of rat body weight, stop administration after body weight do not rebound; 2) no obvious adverse reaction: compare with existing medicine, do not find in this research that nerve growth factor has tangible untoward reaction, no addiction.Therefore utilize nerve growth factor effectively to lose weight, have good society and market prospect.
The invention will be further described below in conjunction with the specific embodiment, do not limit the scope of protection of the invention with this.
The specific embodiment
Embodiment 1
Present embodiment is prepared into injection and nasal spray with NGF, and rat is carried out administration, subsequently its body weight is observed, and confirms the inhibitory action of NGF to body weight gain.
1, medicine
Nerve growth factor (NGF) injection, nasal spray (the clear new drug research development centre of spreading out, Beijing provides)
2. animal
Wister rat (purchasing Experimental Animal Center) in Military Medical Science Institute, 40, male, the standard beverage is fed;
Respectively to rat muscle injection, nasal spray administration, 4000 units/kg body weight, the blank group be normal raising.2 weeks, 4 weeks, 6 weeks, 8 weeks, 10 weeks, 12 weeks and 15 weeks are measured rat body weights when treatment and after the treatment.
3, experimental result: table 1 NGF is to the influence of male rat body weight
Test week | Body weight (x ± SD, g) |
Matched group | The intramuscular injection group | The nasal-cavity administration group |
??W0 ??W2 ??W4 ??W6 ??W8 ??W10 ??W12 ??W15
△ | ??179.8±13.7 ??282.5±23.6 ??339.9±28.8 ??392.0±36.4 ??422.3±39.8 ??458.2±42.0 ??454.5±43.7 ??505.00±58.3 | ??170.0±8.9 ??255.9±21.4
**??312.0±29.9
**??358.0±39.1
**??389.8±44.5
*??422.6±46.9
*??413.3±45.2 ??463.00±81.0
| ??174.0±13.3 ??226.3±17.1
**??270.5±23.8
**??334.5±32.0
**??365.1±40.3
**??398.8±47.6
**??407.0±46.6
**??444.00±36.3
|
N=20,
*P<0.05,
*Compare with the concurrent control group p<0.01, and significant difference, △ are convalescent period, n=5.
Table 2 NGF is to the influence of male rat body weight gain
Test week | Body weight (x ± SD, g/d/ are only) |
Matched group | The intramuscular injection group | The nasal-cavity administration group |
??W0~W2 ??W2~W4 ??W4~W6 ??W6~W8 ??W8~W10 ??W10~W12 ??W12~W15
△ | ??6.16±1.49 ??4.52±1.D95 ??2.90±1.15 ??2.02±2.04 ??2.22±0.82 ??-0.61±5.32 ??1.41±0.46 | ??5.06±1.25
*??4.32±1.29 ??2.56±1.20 ??2.12±0.62 ??2.05±0.98 ??-0.68±1.82 ??1.51±0.76
| ??3.08±0.79
*??3.40±1.74 ??3.56±1.39 ??2.37±0.68 ??1.73±1.41 ??1.15±2.77 ??2.06±0.66
|
N=20,
*P<0.05,
*Significant difference is compared with the concurrent control group in p<0.01.△n=5。
Embodiment 2
Present embodiment is prepared into injection and nasal spray with NGF, and rat is carried out administration, subsequently its body weight is observed, and confirms the inhibitory action of NGF to body weight gain.
1, medicine
Nerve growth factor (NGF) injection, nasal spray (the clear new drug research development centre of spreading out, Beijing provides)
2, animal
Wister rat (purchasing Experimental Animal Center) in Military Medical Science Institute, 40, female, the standard beverage is fed;
Respectively to rat muscle injection, nasal spray administration, 4000 units/kg body weight, the blank group be normal raising.2 weeks, 4 weeks, 6 weeks, 8 weeks, 10 weeks, 12 weeks and 15 weeks are measured rat body weights when treatment and after the treatment.
3, experimental result: see Table 3 and table 4.
Use mentioned nerve growth factor injection of the present invention and nasal spray can prevent that rat body weight from increasing, effect has dose dependent.Rat is used the slimming test bay of nerve growth factor preparation, does not find tangible untoward reaction, and convalescent period is not found any untoward reaction yet, so nerve growth factor is a kind of new effectively losing weight and do not have the medicine of obvious adverse reaction.
Table 3 NGF is to the influence of female rats body weight
Test week | Body weight (x ± SD, g) |
Matched group | The intramuscular injection group | The nasal-cavity administration group |
??W0 ??W2 ??W4 ??W6 ??W8 ??W10 ??W12 ??W15
△ | ??170.2±10.4 ??227.2±11.0 ??256.5±10.9 ??276.5±17.9 ??290.1±26.3 ??295.1±21.6 ??306.2±25.6 ??321.00±39.3 | ??171.5±11.2 ??226.8±17.1 ??256.8±20.8 ??288.0±30.9 ??295.4±29.1 ??305.5±30.2 ??317.8±30.1 ??322.0±32.9 | ??163.9±11.4 ??203.0±14.2
**??234.0±15.2
**??265.0±23.3 ??278.5±26.5 ??293.2±30.7 ??300.6±27.3 ??316.00±36.6
|
N=20,
*P<0.05,
*Significant difference, △ n=5 are compared with the concurrent control group in p<0.01.
Table 4 NGF is to the influence of female rats body weight gain
Test week | Body weight (x ± SD, g/d/ are only) |
Matched group | The intramuscular injection group | The nasal-cavity administration group |
??W0~W2 ??W2~W4 ??W4~W6 ??W6~W8 ??W8~W10 ??W10~W12 ??W12~W15
△ | ??3.45±0.93 ??2.25±0.91 ??1.14±0.71 ??0.83±0.97 ??0.33±0.83 ??1.10±1.02 ??0.78±0.38 | ??3.32±0.67 ??2.39±1.12 ??1.62±1.56 ??0.50±1.81 ??0.32±1.11 ??1.19±1.10 ??0.86±0.43 | ??2.30±0.84
**??2.39±0.80 ??1.72±0.72
*??1.03±0.62 ??0.80±0.54
*??0.89±1.49 ??0.92±1.05
|
N=20,
*P<0.05,
*Significant difference, △ n=5 are compared with the concurrent control group in p<0.01.