Nanofat

纳米脂肪注射

什么是纳米脂肪注射?

纳米脂肪注射是一种减少细纹和皱纹的方法,通常用于改善面部肤质。纳米脂肪注射与一般的填充注射无异,差别在于使用的填充物是自体脂肪(受体本身的脂肪细胞)。

脂肪移植(或脂肪转移)并不是一种全新的手术。事实上,使用移植脂肪来提升面部,让面部看起来更加丰盈饱满的整形手术已经存在了很长时间,且随着时间的推移,技术和方法已经得到改进。

然而,纳米脂肪的问世代表了脂肪移植方法的巨大跃进。我们现在能够使用极细的导管针,在眼睛下方和嘴唇周围注射纳米脂肪来抚平细纹。在某种程度上,这得归功于脂肪干细胞(ADSCs,也称为间充质干细胞)和纳米脂肪中的生长因子,才能让皮肤收益。

随着技术的发展,人们已能将脂肪细胞转化为微小的粒子,从而开辟了许多新的可能性。因此,在过去几年中,脂肪移植领域再次受到青睐。

纳米脂肪注射带来哪些成果?

纳米脂肪注射可以减少细纹和皱纹,改善皮肤质量。最近的研究还表明,纳米脂肪可以改善老旧疤痕的外观(点击此处阅读参考文章)。

此外,将纳米脂肪与小颗粒脂肪(MilliFat)及微粒脂肪(MicroFat)联合使用,还可以逆转衰老迹象。纳米脂肪注射唯一无法改善的是色素沉着,但它可以修复因太阳(或紫外线)照射造成的皮肤损伤。

脂肪移植通常也用于增强埋线拉提或某些免动刀面部拉皮疗法(如 超声刀Ulthera热玛吉)的效果

Fat grafting

脂肪移植手术是如何进行的?

脂肪移植手术过程涉及在局部麻醉的情况下,从腹部或大腿内侧抽取脂肪,基本上是一种小型抽脂

然后将脂肪净化、提纯并分离成不同大小的细胞——小颗粒脂肪、微粒脂肪或纳米脂肪。接着,使用David Loh博士发布的一项技术,将较大的脂肪细胞用来重新激活和提拉面部肌肤。该技术通常被称为DL提拉

最小的脂肪细胞是纳米脂肪,用于减少细纹和皱纹,或者改善一般皮肤质量。

我们拥有用于纳米脂肪注射的专利封闭系统。在抽取、提纯到重新注射纳米脂肪的整个过程中,脂肪细胞完全不会受到环境污染。

手术后,脂肪提取处会有一些瘀伤和不适,可能需要几天到一周才能恢复。总体上,这种不适通常比较轻微。

移植了脂肪后,面部也会有轻微肿胀(我估计约为20%肿大),并且略微敏感(触摸时伴有疼痛)。同时可能会出现一些瘀伤,但总体而言,恢复过程仍算得上舒适。

移植的脂肪可以保持多长时间?

脂肪被移植到新的环境后,有一定比例不会被吸收并将经历细胞凋亡。至于面部,由于血液供应丰富,移植脂肪细胞存活率相当高,预计为40%-60%。因此,我们只需要多移植一点就可以达到预期效果。

大约一个月后,存活下来的所有脂肪细胞都会永远保留下来。它们将融入面部,并将永久抵抗岁月的摧残。事实上,他们会随着极端的体重波动扩展和收缩。


Read more about Liposuction, Vaser Liposelection, Liposuction Not being a method of Weight Reduction, but instead Liposuction being more about a sense of proportion

And did you know we can correct over done fat transfers (fat grafting)?

 

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Storing your Fat’s Stem Cells

Let us get the facts straight.

  1. At the time of writing this blog, there are no approved uses for Mesenchymal Stem Cell (MSC). MOH in Singapore only allows the use of stem cells in approved clinical trials. And for the treatment of medical conditions only. Their use in aesthetics is particularly frowned upon because it is expected that greedy and unethical doctors (or worse beauticians) would exploit the situation.
  1. The technologies to harvest and store stem cells over long periods have existed for decades.
  1. To avoid coercion or conflict of interest, the liposuction doctor who harvests the fat, the facility that stores the MSC, and the doctor or institution that initiates the clinical trials for the stem cell therapies should be separate unrelated people.

What are Stem Cells?

There are several types and sources of stems cells. Embryonic stem cells are derived from aborted embryos, which as you can imagine are outlawed in many countries due to ethical concerns. Adult stem cells can be derived from placenta, umbilical cord, adipose, bone marrow and even teeth.

Stem cells from the bone marrow are well-established therapies for various blood diseases. Some initial success has also been reported for cord blood.

Stem cells extracted from your own fat deposits are a newcomer. A mini-liposuction procedure is needed to get the fat out of the body to yield the stem cells. Adipose tissue derived stem cells are called Mesenchymal Stem Cells (MSC).

The technology to cryo-preserve stems cell has been around for decades. Just make sure the stem cell bank is properly accredited.

The cryo-preserved MSC can in the future be used in regenerative therapy. This refers to the use of regenerated MSC to replace damaged cells in organ failures. One such area of research is in pancreatic beta-cells for the treatment of diabetes. The future for many other diseases may well be in MSC and regenerative therapy.

However in order that you have the best MSC when you most need it in the future, you can do 2 things.

  1. Ensure that the mini-liposuction is done in a reputable and experienced centre.
  2. Choose the best stem cell bank that will store your stem cells for decades to come.

If you happen to be thinking about liposuction anyway, it might be a good idea to have some of the excess fat (which will be discarded) processed for MSC storage. Perhaps one day the MSC can grow a much-needed organ for you.

Watch a video about Fat Dervied Stem Cells from the Plastic Reconstructive Journal dated Sept 2021

What is Liposuction?

Liposuction is a treatment that is useful to sculpt areas of the body or the face that are disproportionate. Pockets of fat are extracted using a thin cannula to reveal a better body contour. The saddlebags, the love handles or a belly that is not in sync with the rest of the body shape are common areas for liposuction.

Liposuctions are minor surgical procedures. They are performed in a day-surgery OT with an anesthetist to administer sedation. The surgery takes about 1-2 hours in general to complete. The recovery time depends on the extent of the liposuction, but generally most patients will be able to go out of the house and run errands to very next day.

In some cases, the extracted fat can be transplanted to augment other areas, which have shrunk in the process of aging. This is referred to commonly as Fat Transfer. The face and the breasts are examples of such areas for Fat Transfer.

And of course during liposuction, a portion of the fat cells can be sent to the laboratory for extraction of mesenchymal stem cells (MSC), which are then stored for future use.

Storage of Mesenchymal Stem Cells (MSC)

The extracted MSC should be stored in a reputable cell banking facility, and preferably in a country like Singapore, which has very stringent laws regarding cell banking and storage standards. Cell banking facilities in Singapore have more than 20-year experience for successfully storing cord blood and stem cells of other sources.

Check that MSC may be withdrawn at the patient’s request for therapeutic purposes.

For ethical reasons, and to avoid and conflict of interest, the therapeutic applications should be administered by a doctor or institution other that the liposuction doctor or the stem cell banking facility.

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